SURFACE CLEANING APPARATUS AND COMMUNICATION METHOD
A surface cleaning apparatus can include a user control portion and a surface cleaning portion, with the surface cleaning portion positioned remotely or spaced from the user control portion. The user control portion can include a power source. The surface cleaning portion can include a processor. The power source and the processor can be operably coupled by a power line.
This application claims the benefit of U.S. Provisional Patent Application No. 62/781,178, filed Dec. 18, 2018, which is incorporated herein by reference in its entirety.
BACKGROUNDSurface cleaning apparatuses such as vacuum cleaners are well-known devices for removing dirt and debris (which can include dirt, dust, soil, hair, and other debris) from a variety of surfaces such as soft flooring including carpets and rugs, hard or bare flooring, including tile, hardwood, laminate, vinyl, and linoleum, or other fabric surfaces such as upholstery. Such surface cleaning apparatuses typically include a user control portion, which can include a user interface or at least one control button or switch, and a surface cleaning portion operably coupled to the user control portion. The user control portion and the surface cleaning portion can be located remotely from one another within the surface cleaning apparatus and operably coupled via at least one of a power line or a communications line.
BRIEF DESCRIPTIONIn one aspect, the disclosure relates to a powerline communication system for controlling a function or operation of at least one component within a surface cleaning device, the powerline communication system including a power source, at least one user control adapted to receive an input from a user, a controller located remotely from the at least one user control and configured to control operation of the at least one component, and a power line electrically coupling the power source, the controller, and the at least one component and wherein the power line is further adapted to provide a communication signal between the at least one user control and the controller.
The disclosure also relates to a vacuum cleaner including a base assembly including a base housing having a suction nozzle and adapted for movement along a surface to be cleaned, an upper unit pivotally coupled to the base housing and having a handle, at least one user control located on the upper unit, the at least one user control adapted to receive an input from a user, a suction source in fluid communication with the suction nozzle for generating a working airstream through the vacuum cleaner, a power source, at least one electrical component provided with the base housing, a controller located remotely from the at least one user control and configured to control operation of the at least one electrical component, and a power line electrically coupling the power source, the controller, and the at least one electrical component and wherein the power line is further adapted to transmit a communication signal between the at least one user control and the controller.
The disclosure further relates to a method of communication for a surface cleaning apparatus, the method including outputting power via a DC battery-powered source through a power line, receiving a user input at a user control, generating an input to a toggle switch based on the receiving the user input, outputting a pulse width modulation signal along the power line to a controller during the outputting power and operating, via the controller, a component of the surface cleaning apparatus based on the pulse width modulation signal.
In the drawings:
The present disclosure relates to a method of communication within a surface cleaning apparatus. The method of communication can be used within a variety of surface cleaning apparatuses having a power source connected to a remote processor via a power line. Non-limiting examples of such suitable surface cleaning apparatuses for cleaning debris from a surface include a portable or handheld surface cleaner, which can be in the form of a stick vacuum or wand vacuum, an upright vacuum cleaner, a canister cleaner, a cordless surface cleaner, including a stick cleaner, sweeper, or mop, an autonomous or robotic surface cleaner, an extraction cleaner, steam and hard floor cleaners, lift-off upright to portable cleaners, or commercial surface cleaners.
The user control portion 2a and the surface cleaning portion 2b can be located remotely from one another. The term remote includes that they are spaced apart within the surface cleaning apparatus 2. By way of non-limiting example, the remotely located user control portion 2a and surface cleaning portion 2b can be provided as a user control portion 2a provided on a handle or an upright portion of a surface cleaner while the surface cleaning portion 2b is the base or foot of a surface cleaner, a user control portion 2a provided at a handle with a surface cleaning portion 2b provided on a canister, or a user control portion 2a on a top surface of an autonomous or robotic surface cleaner and a surface cleaning portion 2b at a floor-contacting lower surface of the autonomous or robotic surface cleaner. The user control portion 2a can be operably coupled to a power source 4 for powering the various operational features of the surface cleaning apparatus 2, including features provided with or located on the surface cleaning portion 2b. In one aspect, the power source 4 can be located adjacent to or near the user control portion 2a, and spaced apart from or remotely from the surface cleaning portion 2b. The surface cleaning portion 2b can include a controller or processor 5 for receiving control information and power from the power source 4.
The power source 4 can be operably coupled to the processor 5 on the surface cleaning portion 2b by a power line 6. In one aspect, the power line 6 can be a DC power line. The processor 5 can be any suitable processor 5 capable of receiving communication from the power line 6, non-limiting examples of which include a microcontroller unit (MCU), a printed circuit board (PCB) or printed circuit board assembly (PCBA), or other basic processor 5. The power line 6 can couple to the processor 5 by any suitable power connector, such as a two pin connector. While the power line 6 is illustrated as the only connection between the user control portion 2a and the surface cleaning portion 2b it will be understood that other components, fluid pathways, etc. can link the user control portion 2a and the surface cleaning portion 2b.
In a conventional surface cleaning apparatus 2, when the user control portion 2a and the surface cleaning portion 2b are located remotely from one another or spaced apart from one another within the surface cleaning apparatus 2, a communications line, separate from the power line 6, is provided to convey control signals from the user control portion 2a to the surface cleaning portion 2b. The inclusion of a communications line results in added cost of manufacturing the surface cleaning apparatus 2. In the aspects of the present disclosure, an apparatus and method are provided that allow for control signals to be provided from the user control portion 2a and the power source 4 to the surface cleaning portion 2b and the processor 5 via the power line 6 itself, without the need for an additional communications line.
In this example, the at least one user control 3 is illustrated, by way of non-limiting example, as a mode selector 3a by which a user can select between cleaning modes of operation of the surface cleaning apparatus 2. The mode selector 3a can selectively occupy one of a first position 3b, a second position 3c, a third position 3d, or a fourth position 3e, by way of non-limiting examples, to select the different desired mode of operation. Such positions have been schematically illustrated as boxes for illustrative purposes. By way of non-limiting example, the modes of operation to be selected from can include an auto sensing mode, a carpet mode, a hard floor mode, or an edge mode. In one example, one mode of operation can correspond to each of the first position 3b, second position 3c, third position 3d, and fourth position 3e of the mode selector 3a.
The mode selector 3a is operably coupled with a toggle switch 7 provided within the surface cleaning apparatus 2, which can be any suitable toggle switch 7, a non-limiting example of which includes a solid-state switch. The toggle switch 7 receives an input from the mode selector 3a via the power line 6, the input from the mode selector 3a indicative of the mode selected by the user. The toggle switch 7 is, in turn, operably coupled with the processor 5 via the power line 6, such that the toggle switch 7 can then introduce a pulse width modulation (PWM) signal to the processor 5 over the power line 6, the PWM signal provided to the processor 5 via the power line 6 corresponding to the mode input received by the toggle switch 7 from the mode selector 3a. In this way, the mode selected by the user at the mode selector 3a generates an input to the toggle switch 7 that determines the pulse width of the PWM signal then provided from the toggle switch 7 to the processor 5 to cause an operation at the surface cleaning portion 2b that corresponds to the mode selected by the user via the mode selector 3a.
During normal operation of the surface cleaning apparatus 2, when the toggle switch 7 is not introducing a PWM signal over the power line 6, the signal transmitted over the power line 6 from the user control portion 2a to the processor 5 of the surface cleaning portion 2b is typically high or uninterrupted, and can be thought of as representing 100% power transmission via the power line 6 and this is schematically illustrated with a line indicated as 6e. When a communication signal is transmitted from the user control to provide an input indicating a different mode of operation to the toggle switch 7, the toggle switch 7 is prompted to introduce or toggle the PWM signal over the power line 6. PWM is a method of communication by generating a pulsing signal. In this example, the toggle switch 7 generates the pulsing signal to be transmitted via the power line 6. The pulse width of the PWM signal encodes the communication signal either by the duty cycle of the PWM signal or the frequency of the PWM signal.
During normal operation of the surface cleaning apparatus 2, when the toggle switch 7 is not introducing a PWM signal over the power line 6, the 100% power transmission, illustrated schematically at 6e, via the power line 6 defines a regular interval or period of current supplied through the power line 6. When the toggle switch 7 is prompted to introduce the PWM signal that is transmitted to the power line 6, the power signal is pulsed, such that the ‘on’ time of the power supply is less than 100% power transmission, or less than the regular interval or period of current. The term duty cycle refers to the proportion or percentage of ‘on’ time of the PWM signal to the regular interval or period of the power transmitted through the power line 6. A low duty cycle corresponds to low power, because the power is off for a greater percentage of the time than it is on. A high duty cycle corresponds to high power, because the power is on for a greater percentage of the time than it is off. For example, a duty cycle of 50% refers to a power signal that is on half the time and off half the time. The frequency of the PWM signal is simply the inverse of the pulse width.
In response to the mode of operation input provided from the mode selector 3a to the toggle switch 7, the duty cycle generated by the PWM signal from the toggle switch 7 can provide an input to the processor 5 of the surface cleaning portion 2b, the processor 5 configured to affect a particular function at the surface cleaning portion 2b in response to the characteristics of the PWM signal received. The function effected by the processor 5 can also or alternately include control of a component 8 provided at the surface cleaning portion 2b that is operably coupled with the processor 5 to be controlled by the processor 5 in response to the PWM signal received at the processor 5. In the illustrated example where the user control 3 is a mode selector 3a with multiple positions corresponding to different modes of operation, it is contemplated that, by way of non-limiting example, an 80% duty cycle 6d can provide an input to the processor 5 to indicate that the surface cleaning portion 2b should be operated in the auto sensing mode, a 60% duty cycle 6c can provide an input to the processor 5 to indicate that the surface cleaning portion 2b should be operated in the carpet mode, a 40% duty cycle 6b can provide an input to the processor 5 to indicate that the surface cleaning portion 2b should be operated in the hard floor mode, and a 20% duty cycle 6a can provide an input to the processor 5 to indicate that the surface cleaning portion 2b should be operated in the edge mode. While the 6a-6e power transmissions have been separately shown for illustrative purposes it will be understood that such transmissions are all over the same power line 6.
While the example described herein refers to selecting a mode of operation for the surface cleaning apparatus 2, it will be understood that the method of communicating via the power line 6 can be used to control any function or component 8 of the surface cleaning apparatus 2 that is provided at the surface cleaning portion 2b, non-limiting examples of which include modes of operation, an agitator, a dusting assembly, a fluid distributor, a steam generator, sensors, such as an ultrasonic floor-type sensor, and mechanically actuated features, such as a lift or a door that can raise or lower the height of the surface cleaning portion 2b relative to the surface to be cleaned, which can be selected based on a floor type detected. Any suitable function or component can be controlled such that the PWM signal input sensed by the processor 5 signals the processor 5 to effect a change or an action at the surface cleaning portion 2b.
In addition to reducing cost and complexity of the surface cleaning apparatus 2 by obviating the need for a separate communications line between the user control portion 2a and the surface cleaning portion 2b in addition to the power line 6, another advantage of the communication method via the power line 6 described herein is that the power transmitted via the power line 6 is essentially uninterrupted to the surface cleaning portion 2b. The toggle switch 7 generates the PWM signal to the power line 6, but the PWM signal makes up a small voltage compared to the total voltage generated by the power source 4, as well as modulating the pulse width only for a percentage of the time, such that the power to the processor 5 is essentially uninterrupted as far as the load at the surface cleaning portion 2b. Thus, the PWM signal can be used to provide communication via the power line 6 without significantly hampering the ability of the power line 6 to provide the necessary power to the surface cleaning portion 2b from the power source 4. Further yet, voltage dividers, such as a potential divider or a resistor voltage divider, can be operably coupled with the power line 6 or the processor 5 to knock down the voltage of the signal to a suitable level that can be sensed or read by the processor 5.
Referring now to
The upper unit 12 is pivotally mounted to the base unit 14 for movement between an upright storage position, shown in
The upper unit 12 can include a vacuum collection system for creating a partial vacuum to suck up debris (which may include dirt, dust, soil, hair, and other debris) from the surface to be cleaned S and collecting the removed debris in a space provided on the vacuum cleaner 10 for later disposal.
The upper unit 12 includes a suction source 16 in fluid communication with the base unit 14 for generating a working airstream and a separating and collection assembly 18 for separating and collecting debris (which can be solid, liquid, or a combination thereof) from the working airstream for later disposal. The upper unit 12 further includes a handle 28 to facilitate movement of the vacuum cleaner 10 by a user. A handle coupler 30 can receive the proximal end of the handle 28, which may be fixed with respect to the upper unit 12, or may pivot to allow the handle 28 to rotate or fold about a horizontal axis relative to the upper unit 12. As illustrated, the handle 28 is pivotally mounted to the upper unit 12 via handle coupler 30 for movement between an upright position, shown in
In one configuration illustrated herein, the collection assembly 18 can include a cyclone separator 22 for separating contaminants from a working airstream and a removable debris cup 24 for receiving and collecting the separated contaminants from the cyclone separator 22. The cyclone separator 22 can have a single cyclonic separation stage, or multiple stages. In another configuration, the collection assembly 18 can include an integrally formed cyclone separator 22 and debris cup 24, with the debris cup 24 being provided with a structure, such as a bottom-opening debris door, for contaminant disposal. It is understood that other types of collection assemblies 18 can be used, such as a centrifugal separator, a bulk separator, a filter bag, or a water-bath separator. The upper unit 12 can also be provided with one or more additional filters 20 upstream or downstream of the separating and collection assembly 18 or the suction source 16.
The suction source 16, such as a motor/fan assembly, is provided in fluid communication with the separating and collection assembly 18, and can be positioned downstream or upstream of the separating and collection assembly 18. The suction source 16 can be electrically coupled to a power source 34, such as a battery or by a power cord plugged into a household electrical outlet. A suction power switch 36 disposed between the suction source 16 and the power source 34 can be selectively closed by the user upon pressing a vacuum power button 35, thereby activating the suction source 16. As shown herein, the suction source 16 is downstream of the separating and collection assembly 18 for a ‘clean air’ system; alternatively, the suction source 16 can be upstream of the separation and collection assembly 18 for a ‘dirty air’ system.
In another configuration, the separation and collection assembly 18, suction source 16, filters 20, power source 34 and power switch 36 may all be disposed within a removable hand-held unit 26 which is removable from the upper unit 12. When disposed in the upper unit 12, the hand-held unit 26 provides the separation and collection assembly 18, suction source 16, filters 20 and power source 34 for the vacuum cleaner 10. When removed from the upper unit 12, the hand-held unit 26 may operate independently from the upper unit 12 to create partial vacuum to suck up debris (which may include dirt, dust, soil, hair, and other debris) from the surface to be cleaned S. It is noted that features of the present disclosure may be applicable to vacuum cleaners not having a hand-held unit.
The base unit 14 is in fluid communication with the suction source 16 for engaging and cleaning the surface to be cleaned S. The base unit 14 includes a base housing 40 having a suction nozzle 42 at least partially disposed on the underside and front of the base housing 40. The base housing 40 can secure an agitator 38 within the base unit 14 for agitating debris on the surface to be cleaned S so that the debris is more easily ingested into the suction nozzle 42. Some examples of agitators 38 include, but are not limited to, a rotatable brushroll, dual rotating brushrolls, or a stationary brush. The agitator 38 illustrated herein is a rotatable brushroll positioned within the base unit 14 adjacent the suction nozzle 42 for rotational movement about an axis X, and can be coupled to and driven by a dedicated agitator motor provided in the base unit 14 via a commonly known arrangement including a drive belt. Alternatively, the agitator 38 can be coupled to and driven by the suction source 16 in the upper unit 12. It is within the scope of the present disclosure for the agitator 38 to be mounted within the base unit 14 in a fixed or floating vertical position relative to the base unit 14.
The vacuum cleaner 10 can be used to effectively clean the surface to be cleaned S by removing debris (which may include dirt, dust, soil, hair, and other debris) from the surface to be cleaned S in accordance with the following method. The sequence of steps discussed is for illustrative purposes only and is not meant to limit the method in any way as it is understood that the steps may proceed in a different logical order, additional or intervening steps may be included, or described steps may be divided into multiple steps, without detracting from the aspects of the present disclosure.
To perform vacuum cleaning in the canister configuration shown in
The suction nozzle 42 includes a suction nozzle opening defined by an underside suction nozzle opening 43 formed in the underside of the sole plate 44 and a front suction nozzle opening 41 formed in the front of the sole plate 44 and front the base housing 40. The suction nozzle openings 41, 43 are in fluid communication with a duct 48 coupled at one end to the base housing 40, which fluidly communicates the suction nozzle openings 41, 43 with the collection assembly 18 (
Referring now to
The two pivoting members 54 extend substantially perpendicularly from the diverter member 52 along the sides of the base housing 40 towards the rear of the base housing 40. The pivoting members 54 are provided with an aperture 80 that receives a horizontal pin (not shown) disposed in the base housing 40 for pivotally mounting the pivoting members 54 to the base housing 40 wherein the two apertures 80 axially align, defining a pivot axis Y. Alternatively, a pin may be provided on the pivoting members 54 and an aperture for receiving the axles in the base housing 40. The rear end of at least one pivoting members 54 is further provided with a spring mount 90 and a diverter end portion 92 having an inverted diverter end wedge 94 disposed on the lower side of the diverter end portion 92 sloping upwardly towards the solenoid piston 56.
The solenoid piston 56 is disposed in the rear of the base housing 40 and is configured to selectively engage at least one of the pivoting members 54. The solenoid piston 56 is of conventional design and includes a stationary housing 64 having an inductive coil (not shown) mounted therein, connected to a power supply, and configured to surround a piston 66 having a cone-shaped termination cap 96. The solenoid piston 56 is selectively movable between a horizontally extended position and a retracted position when the inductive coil is alternately energized and de-energized wherein the termination cap 96 is in communication with the diverter end wedge 94 of the diverter end portion 92 when extended and not in communication when retracted.
The edge illuminators 60 are mounted in the base housing 40 along the two vertical side walls 62 behind light transmitting screens 63 which may form a portion of the vertical side walls 62 such that light illuminated from the edge illuminators 60 pass through the light transmitting screens 63. The edge illuminators 60 can be selected from known constructions, including light emitting diodes (LED) or incandescent lamps, for example. The edge illuminators 60 are of conventional construction and include at least one lens (not shown), at least one light emitting element (LED) (not shown), a printed circuit board (PCB) 74 and electrical leads 76.
Referring now to
An optional visual indicator, such as an indicator light 78, may be mounted to upper portion of the handle 28 for indicating when the solenoid piston 56 and edge illuminators 60 have been activated. The indicator light 78 can be selected from known constructions, including light emitting diodes (LED) or incandescent lamps, for example. The indicator light 78 is of conventional construction and includes a lens (not shown), a light emitting element (LED) (not shown), and electrical leads (not shown) connected in series with the electrical switch 70, solenoid piston 56 and edge illuminators 60.
It will be understood that the operation of the vacuum cleaner 10 can be controlled via one or more controllers 77 (
The piston wedge 98 converts the horizontal force of the piston 66 into a force perpendicular to the piston wedge 98 having horizontal and vertical components and imparts it to the diverter end wedge 94. As the piston 66 extends, the diverter end wedge 94 and piston wedge 98 slip relative to each other such that the diverter end portion 92 pivots upward about the pivot axis Y. When the piston 66 is again retracted, the piston wedge 98 and the diverter end wedge 94 disengage and the diverter end portion 92 pivots downwards due to the tension force of the diverter biasing spring 58 shown in
Referring again to
Referring to
The pivoting pedal 108 includes an actuating surface 120 connected to a cylindrical axle 122 by an arm member 124. The actuating surface 120 is configured to be depressed by a user's foot. The cylindrical axle 122 is pivotally mounted to the base housing 40′ with the centerline of the cylindrical axle 122 substantially parallel to the pivot axis Y′. The arm member 124 extends between the actuating surface 120 and the cylindrical axle 122 such that the actuating surface 120 is disposed above and behind the cylindrical axle 122, and includes a vertical protrusion 126 extending upwards from the top surface of the arm member 124 adjacent to the actuating surface 120. The arm member 124 also includes an arm wedge 125 (shown in
The pivoting pedal 108 is configured to selectively rotate about the cylindrical axle 122 axis between an up position wherein the upper portion of the arm member 124 is in contact with the upper boundary of the pedal recess 116 and a down position wherein the lower surface of the arm member 124 is in contact with the lower boundary of the pedal recess 116. The pedal biasing spring 110 is attached to the cylindrical axle 122 and the base housing 40′ and provides torsion to the cylindrical axle 122 so as to bias the pivoting pedal 108 to the up position. The pedal assembly 104 may further include a detent mechanism for selectively securing the pivoting pedal 108 in the down position. The details of such a detent mechanism are known in the art, and will not be discussed in further detail herein.
The mode indicator 106 includes an L-shaped indicating portion 128 connected to a body portion 130. The horizontal surface of the indicating portion 128 is configured to selectively cover the indicator recess 118 and the vertical surface of the indicating portion extends downward and connects to the rear of the body portion 130. The body portion 130 includes a guide slot 132 extending horizontally, perpendicular to the pivot axis Y′. As seen in
As the pivoting pedal 108 is pivoted to the down position, the vertical protrusion 126 pivots down and away from the mode indicator 106 allowing the mode indicator 106 to move towards the rear of the base housing 40′ under the spring force of the indicator biasing spring (not shown) until the stationary screw 134 abuts the forward portion of the guide slot 132 such that the horizontal surface of the indicator portion 128 covers the indicator recess 118 formed in the base housing 40′. When the pivoting pedal 108 is returned to the up position, the vertical protrusion 126 engages the mode indicator 106 and moves it forward such that the horizontal surface of the indicating portion 128 does not cover the indicator recess 118.
The sliding wedge 112 forms an elongated structure extending parallel to the pivot axis Y′ wherein one side of the sliding wedge 112 forms a sliding pedal wedge 142 and spring mount 144, and the opposing side forms a sliding diverter wedge 146. The sliding pedal wedge 142 slopes downwardly and away from the diverter end portion 92′ and is disposed beneath the arm wedge 125 (
The sliding wedge 112 is configured to linearly slide along the bottom of the base housing 40′ towards and away from the diverter end portion 92′ along an axis parallel to the pivot axis Y′. The base housing 40′ may include a track or guide to ensure a linear sliding path. The sliding wedge biasing spring 114 is configured to bias the sliding wedge 112 away from the diverter end portion 92′.
The switch 70′ may be disposed in the base housing 40′ wherein the switch is, in turn, connected to power source 72′ to selectively energize edge illuminators 60′. The switch 70′ may be configured such that actuating the pivoting pedal 108 to the down position energizes the edge illuminators 60′. Alternatively, a sensor may be provided in the base housing 40′ to sense when the pivoting pedal 108 has been actuated and activate the switch 70′, thereby energizing the edge illuminators 60′.
The operation of the diverter assembly 50 will now be described with respect to the first aspect of the base unit 14 shown in
It is noted that, regardless of the position of the diverter assembly 50, i.e. regardless of whether the front suction nozzle opening 41 is unrestricted or partially restricted by the diverter member 52, the underside suction nozzle opening 43 formed in the underside of the sole plate 44 may remain open to allows debris laden air to be drawn into the base unit 14 through the underside suction nozzle opening 43. The bristles of the agitator 38 can project through the underside suction nozzle opening 43 to agitator debris on the surface to be cleaned.
Referring now to
The first and second pivoting handle mounts 178, 182 form generally cylindrical bodies having interior and exterior features and include circular locking projections 181, 183, wherein the locking projections 181 on the first pivoting handle mount 178 are configured to be coaxially received by the locking projections 183 on the second pivoting handle mount 182. The first and second pivoting handle mount 178, 182 further include a rectangular sleeve 184 configured to receive the two interlock members 186. The first pivoting handle mount 178 further includes handle mounting flanges 180 that attach to the rear casing 168 (
The two interlocking members 186 each include a wedge protrusion 190, a male locking connector 194 opposing the wedge protrusion 190, a rectangular middle portion 191 and a void 195 configured to receive the retention spring 198.
The two upper unit stationary mounts 202 form generally cylindrical bodies having interior and exterior features and include a spring retainer 210 configured to retain the two retention springs 198, upper unit mounting flanges 206, configured to attach to the upper unit 12 (
When the handle is returned to the upright position as shown in
The vacuum cleaner 10 disclosed herein provides improved cleaning performance and ease of use. One advantage that may be realized in the practice of some aspects of the described vacuum cleaner 10 is that the vacuum cleaner 10 can be configured to selectively provide increased suction to the edges of the suction nozzle 42 so as to increase cleaning potential along edges and walls. Furthermore, the edges or walls to be cleaned may be automatically illuminated to increased user visibility by the user. Another advantage is that the vacuum cleaner 10 can be configured such that the handle 28 may be easily folded by a simple pull of the trigger 162 by a user.
By incorporating the communication method as described with respect to
The vacuum cleaner 310 can include a recovery system 314 for removing debris from the surface to be cleaned and storing the debris. The recovery system 314 can include a suction inlet or suction nozzle 316, a suction source 318 in fluid communication with the suction nozzle 316 for generating a working air stream, and a recovery container 320 for separating and collecting debris from the working airstream for later disposal.
The suction nozzle 316 can be provided on a base or cleaning head adapted to move over the surface to be cleaned. An agitator 326 can be provided adjacent to the suction nozzle 316 for agitating the surface to be cleaned so that the debris is more easily ingested into the suction nozzle 316. Some examples of agitators 326 include, but are not limited to, a horizontally-rotating brushroll, dual horizontally-rotating brushrolls, one or more vertically-rotating brushrolls, or a stationary brush.
The suction source 318 can be any suitable suction source and is provided in fluid communication with the recovery container 320. The suction source 318 can be electrically coupled to a power source 322, such as a battery or by a power cord plugged into a household electrical outlet. A suction power switch 324 between the suction source 318 and the power source 322 can be selectively closed by the user, thereby activating the suction source 318.
A separator 321 can be formed in a portion of the recovery container 320 for separating entrained debris from the working airstream.
The vacuum cleaner 310 shown in
In operation, the vacuum cleaner 310 is prepared for use by coupling the vacuum cleaner 310 to the power source 322. During operation of the recovery system 314, the vacuum cleaner 310 draws in debris-laden working air through the suction nozzle 316 and into the downstream recovery container 320 where the fluid debris is substantially separated from the working air. The airstream then passes through the suction source 318 prior to being exhausted from the vacuum cleaner 310. The recovery container 320 can be periodically emptied of collected fluid and debris.
The hand-held portion 336 can be coupled to a wand 340 having at least one wand connector 342. In the illustrated example, both a first end 344 of the wand 340 and a second end 346 of the wand 340 include a wand connector 342. The wand connector 342 at the second end 346 of the wand 340 can be coupled to the base assembly 334 via a wand receiver 348. The wand connector 342 at the first end 344 of the wand 340 can couple to a second wand receiver 350 within the hand-held portion 336. It is contemplated that the wand connectors 342 can be the same type of connector or can vary. Any suitable type of connector mechanism can be utilized, such as a quick connect mechanism or a tubing coupler in non-limiting examples.
A pivotal connection between the upright assembly 332 and the base assembly 334 can be provided by at least one pivoting mechanism. In the illustrated example, the pivoting mechanism can include a multi-axis swivel joint assembly 352 configured to pivot the upright assembly 332 from front-to-back and side-to-side with respect to the base assembly 334. A lower portion 354 of the swivel joint assembly 352 is located between the wand 340 and the base assembly 334. The lower portion 354 of the swivel joint assembly 352 provides for pivotal forward and backward rotation between the wand 340 and the base assembly 334. An upper portion 356 of the swivel joint assembly 352 is also located between the wand 340 and the base assembly 334 and provides for lateral or side-to-side rotation between the wand 340 and base assembly 334. More specifically, the lower portion 354 of the swivel joint assembly 352 is coupled between the base assembly 334 and the upper portion 356 of the swivel joint assembly 352. The upper portion 356 of the swivel joint assembly 352 is coupled to the wand receiver 348 at the second end 46 of the wand 340. Wheels 358 can be coupled to the lower portion 354 of the swivel joint assembly 352 or directly to the base assembly 334, and are adapted to move the base assembly 334 across the surface to be cleaned.
The hand-held portion 336 can also include the recovery container 320, illustrated herein as a dirt separation and collection module 360 fluidly coupled to the suction source 318 via an air outlet port 362. The dirt separation and collection module 360 can be removable from the hand-held portion 336 by a release latch 364 as shown so that it can be emptied of debris.
An upper end of the hand-held portion 336 can further include a hand grip 366 for maneuvering the vacuum cleaner 310 over a surface to be cleaned and for using the vacuum cleaner 310 in hand-held mode. At least one control mechanism is provided on the hand grip 366 and coupled to the power source 322 (
The agitator 326 of the illustrated example includes a brushroll 370 (
Referring now to
In the illustrated example, the power source 322 is in the form of a battery pack 382 containing one or more batteries, such as lithium-ion (Li-Ion) batteries. Optionally, the vacuum cleaner 310 can include a power cord (not shown) to connect to a wall outlet. In still another example, the battery pack 382 can include a rechargeable battery pack, such as by connecting to an external source of power to recharge batteries contained therein.
During operation of the vacuum cleaner 310, the power source 322 can supply power for the suction source 318, such as by way of non-limiting example a motor/fan assembly 424 (
The suction level indicator 386 is illustrated as being positioned at lateral edges of the user interface 384 and can illuminate to show a current level of suction power. More specifically, three progressively-illuminated LEDs 390 can be positioned at each lateral edge to indicate a level of suction between “high,” “medium,” and “low” suction powers for the suction level indicator 386. For example, repeated pressing of a suction mode selector button 392 can cycle through the “high,” “medium,” and “low” suction power levels, and each LED 390 of the suction level indicator 386 can illuminate in sequence accordingly. In the illustrated example, the “medium” suction power level is shown wherein two of the three LEDs 390 are illuminated on the suction level indicator 386 of the user interface 384. It will be understood that, in the illustrated example, the suction mode selector button 392 is configured to operate the suction source 318 (
It will be understood that the modes or options presented to a user may not be labeled as “high,” “medium,” and “low” instead the modes can correlate to “modes” such as carpet, hard floor, and edge. While the mode selector has been illustrated as a button it could be any suitable user control including a switch or other mechanism. Regardless of the specific mechanism utilized it will be understood that the mode selector button 392 can also be configured to operably couple with a toggle switch 373 (
The battery level indicator 388 is in the form of a series of lights, such as light-emitting diodes (LEDs) 396 that progressively illuminate to show a level of charge of the battery pack 382. In an alternate example, the battery level indicator 388 can be in the form of a pre-drawn icon displayed on a screen to indicate a level of charge of the battery pack 382.
Turning to
As illustrated, a wand axis 426 can be defined through the center of the wand 340 (
A collector axis 428 can be defined through the center of the dirt separation and collection module 360, and a motor axis 430 can be defined through the center of the motor/fan assembly 424. It is contemplated that the wand axis 426, the collector axis 428, and the motor axis 430 can all be parallel to one another as shown. Put another way, when the wand 340 is held upright such that the wand axis 426 is vertical, the collector axis 428 and the motor axis 430 are also vertical.
A grip axis 432 can be defined through the center of the hand grip 366 as shown. The grip axis 432 forms a grip angle 434 with respect to a vertical direction, such as 60 degrees in a non-limiting example. Further, a battery axis 436 can be defined through the center of the battery pack 382 and intersect the grip axis 432. The battery axis 436 can also define a battery angle 438 with respect to a vertical direction, such as 30 degrees in a non-limiting example. Optionally, the grip axis 432 can be orthogonal to the battery axis 436.
The working air moves through an inlet to a second stage separator 448 in the separator assembly 440, such as a grill or a mesh configured to filter smaller debris, and enters a second stage separation chamber 450, which is shown as a cyclonic separator herein. Smaller debris removed from the working air collects in a second stage collector 452 near the bottom of the recovery container 230. The first stage collector 446 can surround the second stage collector 452 as shown.
An exhaust outlet 454 and filter housing 458 are fluidly coupled to an upper portion of the second stage separation chamber 450. With additional reference to
The outer surface of the first stage separator 442 can accumulate debris, such as hair, lint, or the like that may become stuck thereon and may not fall into the first stage collection area 446.
The separator assembly 440 can further include a ring 461 slidably coupled to the recovery container 320. The ring 461 can be coupled to a wiper 460, such as an annular wiper, configured to contact the first stage separator 442. The separator assembly 440 can be lifted upwards with respect to the ring 461 and recovery container 320. During this lifting, the ring 461 temporarily remains coupled to the recovery container 320, either by friction fit or a mechanical coupling such as bayonet hook, for example, and the wiper 460 slides or scrapes along the first stage separator 442 to remove accumulated debris from the outer surface of the first stage separator 442 or grill, which falls down to the first stage collection area 446.
When the separator assembly 440 has been raised to a predetermined level, it can lift away from the recovery container 320 along with the ring 461 and wiper 460. The recovery container 320 can then be inverted to remove dirt and debris from the first and second stage collection areas 446 and 452. After emptying, the separator assembly 440 can be repositioned within the recovery container 320 and the ring 461 can once again be coupled to the recovery container 320 for additional use of the vacuum cleaner 310.
A decorative insert 466 can be coupled to at least a portion of the wand body 462. In the illustrated example, the decorative insert 466 can be in the form of a flat plate and configured to couple to a recessed portion defining a face 464 of the triangular shaped wand body 462. Optionally, the decorative insert 466 can included rounded edges to form smooth surface transitions between an outer surface of the decorative insert and a second face of the wand body. It is contemplated that the decorative insert 466 can be formed of plastic, including transparent or translucent plastic. Optionally, the decorative insert 466 can include logos or other markings or indicators for operations of the vacuum cleaner 310, or locating features so as to couple a correct end of the wand body 462 to one of the base assembly 334 or hand-held portion 336 of the upright assembly 332, for example.
The tubular member 465a can be formed from a transparent material such as extruded thermoplastic or polycarbonate material. In such a case, the assembled wand would include a transparent face defined by the exposed face of the tubular member 465a when assembled within the wand body 462a. In this configuration, a transparent tubular member would provide visibility within the wand central conduit 378a, such that dirt and debris moving through the conduit would be visible to a user during operation of the vacuum cleaner 310. Additionally, potential obstructions or clogs within the tubular member could also be viewed in a facile manner through the transparent tubular member. A transparent section 467 has been illustrated in the tubular member 465a by way of non-limiting example.
A brushroll 370 can be positioned within the agitator chamber 374 by sliding a first end through the aperture 486 located at the second side 482 of the base assembly 334. When fully inserted, a second end 370b of the brushroll 370 can be flush with the aperture 486. In addition, the hose conduit 376 can fluidly couple the agitator chamber 374 to the wand central conduit 378 (
The base assembly 334 can include a brush drive assembly 492 positioned opposite the aperture 486 and configured to drive rotational motion of the agitator 326 (e.g. brushroll 370) within the agitator chamber 374. The brush drive assembly 492 can have components including, but not limited to, a brush motor 526, a belt 528 within a belt housing 529, and a brush drive gear 520.
Additional details of the brushroll 370 are shown in
The assembled base assembly 334 is shown in
It is contemplated that a variety of agitators 326 and brushrolls 370 can be utilized within the agitator chamber 374.
More specifically, during operation of the vacuum cleaner 310 when the headlight array 490 provides illumination it has been determined that the placement of the headlight array 490 in this very low position across the front of the base assembly 334 illuminates the surface to be cleaned very well, including that dust and/or debris are illuminated exceptionally well. It has been determined that performance is noticeably better as compared to when LEDs are mounted higher up and pointing downwardly at the surface to be cleaned. Because of the low position of the headlight array 490 and because the headlight array 490 faces forward and projects illumination at substantially a horizontal projection along the second plane 532 shadows are cast by debris on the surface to be cleaned and these shadows are very obvious to a user of the vacuum cleaner 310. It will be understood that the beam provided by the headlight array 490 can be projected with a zero-degree angle that provides a beam that is parallel to the surface to be cleaned as defined by the first plane 530.
By incorporating the communication method as described with respect to
The controller 377 can be configured to receive the PWM signal provided by the power communication system via the power line 368 or various conductor leads. More specifically, during operation the suction mode selector button 392 can be utilized to select one of the mode. As explained above the mode can refer to an operational mode such as the type of flooring or to a suction level by way of non-limiting examples.
The toggle switch 373 can receive an input from the mode selector button 392 via the power line 368 and any suitable conductors, the input from the mode selector button 392 is indicative of the mode selected by the user. The toggle switch 373 can then introduce a PWM signal to the controller 377 over the power line 368, the PWM signal provided to the controller 377 via the power line 368 corresponding to the mode input received by the mode selector button 392 or other user controls. In this way, the mode selected by the user at the mode selector button 392 generates an input to the toggle switch 373 that determines the pulse width of the PWM signal then provided from the toggle switch 373 to the controller 377 to cause an operation at the base assembly 334 that corresponds to the mode selected by the user.
It is contemplated that during operation of the vacuum cleaner 310 that no mode may be selected and that the toggle switch 373 is not introducing a PWM signal over the power line 368 and the signal transmitted over the power line 368 to the controller 377 is typically high or uninterrupted, and can be thought of as representing 100% power transmission. When a communication signal is transmitted from the user control, including but not limited to the suction mode selector button 392, this can provide an input indicating a different mode of operation to the toggle switch 373 and the toggle switch 373 is prompted to introduce or toggle the PWM signal over the power line 368.
It is contemplated that the vacuum cleaner 310 may only be operational in a mode or when a suction mode is selected. By way of further non-limiting example it is contemplated that a first mode can include an auto sensing mode and that when this mode is selected an 80% duty cycle can provide an input to the controller 377 to indicate that one or more components of the base assembly 334 should be operated in the auto sensing mode, a 60% duty cycle can provide an input to the controller 377 to indicate that one or more components of the base assembly 334 should be operated in the carpet mode, a 40% duty cycle can provide an input to the controller 377 to indicate that one or more components of the base assembly 334 should be operated in the hard floor mode. The controller 377 as part of the powerline communication system is configured to affect a particular function or control of one or more components in response to the characteristics of the PWM signal received. The powerline communication system can be utilized to control any number of features and functions. Further, non-limiting examples of such functions, components, and features that can be controlled individually or in combination include an agitator 326 or brush motor 526, a headlight array 490, or other components or functions provided at the base assembly 334.
It will be understood that the above disclosure provides for a number of benefits including co-opting the power line or electrical conductor leads by using powerline communications. The powerline communication system and surface cleaners utilize a PWM signal, which is introduced over line or leads and a signal is encoded by either the duty cycle of the PWM signal or the frequency of the PWM signal, which will be understood to be the inverse of the pulse width modulation. The signal is intermittent, in that during operation, the power line or electrical lead is primarily high and when a communication signal is transmitted, a solid state switch toggles the PWM signal over the line and then the line returns to high such that the DC power is essentially uninterrupted as far as the load at the foot is concerned.
To the extent not already described, the different features and structures of the various aspects of the present disclosure may be used in combination with each other as desired. Thus, the various features of the different aspects may be mixed and matched as desired to form new aspects, whether or not the new aspects are expressly described.
Further aspects of the invention are provided by the subject matter of the following clauses:
1. A powerline communication system for controlling a function or operation of at least one component within a surface cleaning device, the powerline communication system comprising a power source, at least one user control adapted to receive an input from a user, a controller located remotely from the at least one user control and configured to control operation of the at least one component, and a power line electrically coupling the power source, the controller, and the at least one component and wherein the power line is further adapted to provide a communication signal between the at least one user control and the controller.
2. The powerline communication system of any preceding clause wherein the power source includes a DC battery-powered power source.
3. The powerline communication system of any preceding clause, further comprising a switch configured to introduce the communication signal over the power line as a pulse width modulation signal based on the input received by the at least one user control.
4. The powerline communication system of any preceding clause wherein the controller is configured to determine one of a duty cycle of the pulse width modulation signal or a frequency of the pulse width modulation signal and the controller is configured to operate the at least one component based thereon.
5. The powerline communication system of any preceding clause wherein the controller is in a base of the surface cleaning device and the user control is in a handle.
6. The powerline communication system of any preceding clause wherein the communication signal is intermittently transmitted and electrical power at the base is substantially uninterrupted.
7. The powerline communication system of any preceding clause wherein the at least one user control is a mode selector configured to select one of a predefined set of modes.
8. A vacuum cleaner, comprising: a base assembly including a base housing having a suction nozzle and adapted for movement along a surface to be cleaned; an upper unit pivotally coupled to the base housing and having a handle; at least one user control located on the upper unit, the at least one user control adapted to receive an input from a user; a suction source in fluid communication with the suction nozzle for generating a working airstream through the vacuum cleaner; a power source; at least one electrical component provided with the base housing; a controller located remotely from the at least one user control and configured to control operation of the at least one electrical component; and a power line electrically coupling the power source, the controller, and the at least one electrical component and wherein the power line is further adapted to transmit a communication signal between the at least one user control and the controller.
9. The vacuum cleaner of any preceding clause wherein the power source includes a DC battery-powered power source.
10. The vacuum cleaner of any preceding clause, further comprising a switch configured to introduce the communication signal over the power line in the form of a pulse width modulation signal based on the input received by the at least one user control.
11. The vacuum cleaner of any preceding clause wherein the controller is configured to determine one of a duty cycle of the pulse width modulation signal or a frequency of the pulse width modulation signal and the controller is configured to operate the at least one electrical component based thereon.
12. The vacuum cleaner of any preceding clause wherein the controller is provided with the base housing and the at least one user control is on the handle.
13. The vacuum cleaner of any preceding clause wherein the communication signal is intermittently transmitted and electrical power at the base assembly is substantially uninterrupted.
14. The vacuum cleaner of any preceding clause wherein the at least one user control is a mode selector configured to select one of a plurality of predefined set of modes.
15. The vacuum cleaner of any preceding clause wherein the switch is configured to introduce a different duty cycle of the pulse width modulation signal for each of the plurality of predefined set of modes.
16. The vacuum cleaner of any preceding clause wherein the base assembly further comprises an agitator chamber at the suction nozzle and the at least one electrical component is a motor operably coupled to an agitator therein.
17. The vacuum cleaner of any preceding clause wherein the handle is defined on a hand-held portion, the hand-held portion having a hand grip and the suction source.
18. The vacuum cleaner of any preceding clause wherein the at least one electrical component is a headlight array located along a forward oriented portion of the base housing, providing a beam that is substantially parallel to the surface to be cleaned and spaced above the surface to be cleaned at not more than 30 mm.
19. The vacuum cleaner of any preceding clause wherein a working air path is at least partially defined by a wand operably coupled between the base assembly and the hand-held portion and wherein the hand-held portion further comprises a debris removal assembly including a recovery container provided in fluid communication with the suction source and the suction source includes a motor/fan assembly operably coupled to the debris removal assembly to form a single, hand-carriable unit.
20. A method of communication for a surface cleaning apparatus, the method comprising outputting power via a DC battery-powered source through a power line; receiving a user input at a user control; generating an input to a toggle switch based on the receiving the user input; outputting a pulse width modulation signal along the power line to a controller during the outputting power; and operating, via the controller, a component of the surface cleaning apparatus based on the pulse width modulation signal.
While aspects of the present disclosure have been specifically described in connection with certain specific aspects thereof, it is to be understood that this is by way of illustration and not of limitation. Reasonable variation and modification are possible within the scope of the forgoing disclosure and drawings without departing from the spirit of the present disclosure which is defined in the appended claims. Hence, specific dimensions and other physical characteristics relating to the aspects disclosed herein are not to be considered as limiting, unless the claims expressly state otherwise.
Claims
1. A powerline communication system for controlling a function or operation of at least one component within a surface cleaning device, the powerline communication system comprising:
- a power source;
- at least one user control adapted to receive an input from a user;
- a controller located remotely from the at least one user control and configured to control operation of the at least one component; and
- a power line electrically coupling the power source, the controller, and the at least one component and wherein the power line is further adapted to provide a communication signal between the at least one user control and the controller.
2. The powerline communication system of claim 1 wherein the power source includes a DC battery-powered power source.
3. The powerline communication system of claim 1, further comprising a switch configured to introduce the communication signal over the power line as a pulse width modulation signal based on the input received by the at least one user control.
4. The powerline communication system of claim 3 wherein the controller is configured to determine one of a duty cycle of the pulse width modulation signal or a frequency of the pulse width modulation signal and the controller is configured to operate the at least one component based thereon.
5. The powerline communication system of claim 4 wherein the controller is in a base of the surface cleaning device and the user control is in a handle.
6. The powerline communication system of claim 5 wherein the communication signal is intermittently transmitted and electrical power at the base is substantially uninterrupted.
7. The powerline communication system of claim 1 wherein the at least one user control is a mode selector configured to select one of a predefined set of modes.
8. A vacuum cleaner, comprising:
- a base assembly including a base housing having a suction nozzle and adapted for movement along a surface to be cleaned;
- an upper unit pivotally coupled to the base housing and having a handle;
- at least one user control located on the upper unit, the at least one user control adapted to receive an input from a user;
- a suction source in fluid communication with the suction nozzle for generating a working airstream through the vacuum cleaner;
- a power source;
- at least one electrical component provided with the base housing;
- a controller located remotely from the at least one user control and configured to control operation of the at least one electrical component; and
- a power line electrically coupling the power source, the controller, and the at least one electrical component and wherein the power line is further adapted to transmit a communication signal between the at least one user control and the controller.
9. The vacuum cleaner of claim 8 wherein the power source includes a DC battery-powered power source.
10. The vacuum cleaner of claim 8, further comprising a switch configured to introduce the communication signal over the power line in the form of a pulse width modulation signal based on the input received by the at least one user control.
11. The vacuum cleaner of claim 10 wherein the controller is configured to determine one of a duty cycle of the pulse width modulation signal or a frequency of the pulse width modulation signal and the controller is configured to operate the at least one electrical component based thereon.
12. The vacuum cleaner of claim 11 wherein the controller is provided with the base housing and the at least one user control is on the handle.
13. The vacuum cleaner of claim 12 wherein the communication signal is intermittently transmitted and electrical power at the base assembly is substantially uninterrupted.
14. The vacuum cleaner of claim 12 wherein the at least one user control is a mode selector configured to select one of a plurality of predefined set of modes.
15. The vacuum cleaner of claim 14 wherein the switch is configured to introduce a different duty cycle of the pulse width modulation signal for each of the plurality of predefined set of modes.
16. The vacuum cleaner of claim 12 wherein the base assembly further comprises an agitator chamber at the suction nozzle and the at least one electrical component is a motor operably coupled to an agitator therein.
17. The vacuum cleaner of claim 12 wherein the handle is defined on a hand-held portion, the hand-held portion having a hand grip and the suction source.
18. The vacuum cleaner of claim 17 wherein the at least one electrical component is a headlight array located along a forward oriented portion of the base housing, providing a beam that is substantially parallel to the surface to be cleaned and spaced above the surface to be cleaned at not more than 30 mm.
19. The vacuum cleaner of claim 17 wherein a working air path is at least partially defined by a wand operably coupled between the base assembly and the hand-held portion and wherein the hand-held portion further comprises a debris removal assembly including a recovery container provided in fluid communication with the suction source and the suction source includes a motor/fan assembly operably coupled to the debris removal assembly to form a single, hand-carriable unit.
20. A method of communication for a surface cleaning apparatus, the method comprising:
- outputting power via a DC battery-powered source through a power line;
- receiving a user input at a user control;
- generating an input to a toggle switch based on the receiving the user input;
- outputting a pulse width modulation signal along the power line to a controller during the outputting power; and
- operating, via the controller, a component of the surface cleaning apparatus based on the pulse width modulation signal.
Type: Application
Filed: Dec 6, 2019
Publication Date: Jun 18, 2020
Inventor: Bryan Lee Villaroman (Taguig City)
Application Number: 16/705,721