MINIATURE VEHICLE AND SET
In an aspect, the invention is directed to a set that includes a miniature vehicle that drives one or more wheels with an on-board motor that draws power from an on-board power source. A switch is provided to control the transmission of power from the power source to the motor. A first drive-related magnetically-responsive member is movable between first and second positions to control whether the switch is off or on. A second drive-related magnetically-responsive member is positionable to interact with the first drive-related magnetically responsive member to move the first drive-related magnetically-responsive member to the second position so as to close the switch.
The present invention relates to miniature electrically powered vehicles and sets including guideways on which the vehicles travel.
BACKGROUND OF THE INVENTIONCurrently available play sets with electrically powered miniature vehicles suffer from several problems. Some playsets incorporate a track that has embedded conductive members. The vehicle contains brushes or conductive members that engage conductive members on the track and draws power from a power source through this engagement. While the vehicles are typically capable of reaching high speeds, the tracks for such systems can be expensive. In some playsets, the vehicle has an on-board power source, in the form of a battery. One problem with this is that, in order to obtain strong acceleration and high speeds, one or more relatively expensive batteries may be needed and these batteries can be drained relatively quickly of their charge. Additionally, play patterns with some prior art vehicles and track systems can be relatively limited, even in situations where the track is reconfigurable.
It would be beneficial to provide a vehicle and a set including a vehicle that overcomes some or all of the above problems at least to some degree.
SUMMARY OF THE INVENTIONIn a first aspect, the invention is directed to a set that includes a miniature vehicle that drives one or more wheels with an on-board motor that draws power from an on-board power source. A switch is provided to control the transmission of power from the power source to the motor. A first drive-related magnetically-responsive member is movable between first and second positions to control whether the switch is off or on. A second drive-related magnetically-responsive member is positionable to interact with the first drive-related magnetically responsive member to move the first drive-related magnetically-responsive member to the second position so as to close the switch.
In a particular embodiment of the first aspect, the miniature vehicle includes a chassis, a plurality of wheels rotatable with respect to the chassis and a motor. The plurality of wheels includes at least one driven wheel that is drivable by the motor. The vehicle further includes a power source connectable to provide power to the motor, a switch operatively connected to control power transmission from the power source to the motor, and a first drive-related magnetically-responsive member that is positionable in a first position wherein the first drive-related magnetically-responsive member opens the switch to disconnect the motor from the power source, and a second position wherein the first drive-related magnetically-responsive member closes the switch to connect the motor to the power source. The second drive-related magnetically responsive member is positionable to interact with the first drive-related magnetically responsive member to move the first drive-related magnetically-responsive member to the second position when the first drive-related magnetically-responsive member is sufficiently close to the second drive-related magnetically-responsive member, thereby closing the switch and causing the motor to drive the at least one driven wheel.
In an embodiment the second drive-related magnetically-responsive member is part of a guideway on which the vehicle can drive.
In a second aspect, the invention is directed to a miniature vehicle that includes a motor that drives one or more wheels, a battery, and a voltage boosting circuit that is controllable to increase the voltage from the battery voltage for driving the motor.
In a particular embodiment, the miniature vehicle includes a chassis, a plurality of wheels rotatable with respect to the chassis and a motor, wherein the plurality of wheels includes at least one driven wheel that is drivable by the motor, a battery, a voltage boosting circuit that stores charge from the battery at a higher voltage than the battery voltage and that is selectively connectable to the motor and a switch that is selectively closeable to operatively connect the voltage boosting circuit to the motor.
In a third aspect, the invention is directed to set including a miniature vehicle that includes a steering linkage that is movable to steer the vehicle left or right via one or more first steering-related magnetically-responsive members. A second steering-related magnetically-responsive member is positionable to interact with the one or more first steering-related magnetically-responsive members to move the steering linkage so as to steer the vehicle in a selected direction.
In a fourth aspect, the invention is directed to a packaging for a miniature vehicle for use with a guideway including a base and a pair of guide walls. The packaging includes a blister member, and a backing member connected to the blister member. The backing member forms a section in the base of the guideway. The backing member may optionally contain a second drive-related magnetically-responsive member in embodiments where it can interact with a vehicle that has a drive-related switch that is operable via a first drive-related magnetically-responsive member. In other embodiments, the backing member may optionally contain a second steering-related magnetically-responsive member in embodiments in which it can interact with a steering linkage on the vehicle which is movable via one or more first steering-related magnetically-responsive members.
In a fifth aspect, the invention is directed to a miniature vehicle that is driven by a motor, and that includes a plurality of removable performance-altering members, each of which are removably connectable to a base portion of the vehicle to alter the operation of the motor. In a particular embodiment, the motor is operated for a first non-zero period of time when a first performance-altering member is connected to the base portion, and the motor is operated for a second non-zero period of time when a second performance-altering member is connected to a base portion of the vehicle. A voltage-controlled switch (e.g. a MOSFET) may be provided to control current flow through the motor. A main voltage source is selectively connected to the voltage-controlled switch to control the state of the switch. Each performance-altering member may include a secondary voltage source. When the performance-altering member is connected to the base portion of the vehicle, the secondary voltage source is positioned to control the voltage-controlled switch to keep the voltage-connected switch closed for a selected period of time after disconnection of the main voltage source from the voltage-controlled switch. Preferably, the secondary voltage source is a capacitor that is chargeable by the main voltage source.
The present invention will now be described by way of example only with reference to the attached drawings, in which:
Reference is made to
The vehicle 12 further includes a power source 28, which provides power for driving the motor 30. The power source 28 is described in greater detail further below. Referring to
The switch biasing member 40, which in the exemplary embodiment shown in
Referring to
In the embodiment shown, the first drive-related magnetically-responsive member 44 is a magnet, and the second drive-related magnetically-responsive member 46 is a metallic member that contains a ferrous metal, such as steel. It is alternatively possible, however, for both the first and second drive-related magnetically-responsive members 44 and 46 to magnets, or for the first drive-related magnetically-responsive member 44 to be a metallic member such as steel and for the second drive-related magnetically-responsive member 46 to be a magnet.
Referring to
Referring to
It will be noted that the first and second drive-related magnetically-responsive members 44 and 46 may be positioned at a suitable distance from each at their closest distance from each other so as to keep relatively low any magnetic drag that may occur therebetween as the vehicle 12 passes over the accelerator sections 60. Control of the amount of magnetic drag that occurs can be achieved by a number of measures, such as by positioning the first drive-related magnetically-responsive member 44 at a selected height in the vehicle 12.
In an alternative embodiment, the second drive-related magnetically-responsive member 46 may be provided on a simple card that may simply be laid on a floor without a guideway. The vehicle 12 can then be place on the card containing the second drive-related magnetically-responsive member 46 and can be accelerated to some speed after which it leaves the card and rolls along the floor.
Reference is made to
The steering linkage biasing member 74 may be, for example, a compression spring connected at one end to the chassis (
Pivoting of the first and second sides of the sway 68 downwardly may take place by the interaction of the left and right first steering-related magnetically-responsive members 76a and 76b with a second steering-related magnetically-responsive member 86 that is positioned on a left side or a right side of the guideway 14. As an example, referring to
In an alternative embodiment, the second steering-related magnetically-responsive member 86 may be positioned in a card that is insertable on its edge into or is otherwise selectively connectable in a vertical orientation to the guide wall 52 on one side or the other of the vehicle 12. The second steering-related magnetically-responsive member 86 would interact with the left or right (whichever it is nearest) first steering-related magnetically-responsive member 76 to steer the vehicle 12 in a selected direction. In such an embodiment, the first and second steering-related magnetically-responsive members may be oriented to face laterally instead of facing downwardly, and may be connected directly to left and right ends of a steering rod, for example so that a sway bar would not be needed.
The steering linkage 66 may also provide braking capability for the vehicle 12. For example, a second steering-related magnetically-responsive member 86 may be provided on a guideway section (i.e. a base section or a guide wall section) in which case the guideway section may be referred to as a braking guideway section 92. The second steering-related magnetically-responsive member 86 causes the vehicle 12 to steer into one of the guide walls 52a or 52b thereby decelerating the vehicle 12 (optionally until the vehicle 12 stops). The deceleration of the vehicle 12 is carried out by frictional engagement between the vehicle 12 and the guide wall 52a. The first and second steering-related magnetically-responsive members 76 and 86 are positioned suitably closely to each other, so as to provide a selected amount of magnetic drag therebetween so that some braking force is provided by the magnetic drag. As an example, a ‘pit lane’ shown at 94 is provided on the guideway 14 shown in
The first and second steering-related magnetically-responsive members 76 and 86 may be a magnet and a ferrous metallic member respectively, in similar fashion to the first and second drive-related magnetically-responsive members 44 and 46.
Referring to
When the drive-related switch 32 is open, current is prevented from flowing through the motor 30 because the MOSFET shown at 111 prevents current flow between its source and drain. When the drive-related switch 32 is closed (e.g. because the vehicle 12 is passing over a second drive-related magnetically-responsive member 46), the MOSFET 111 changes state to permit current flow through the motor 30, so that the motor 30 accelerates the vehicle 12.
It will be understood that the boost converter 98 shown here is one example of a voltage boosting circuit that could be used to boost the voltage from the battery 96 for driving the motor 30. Any other suitable voltage boosting circuit may instead be used for this purpose, such as, for example, a buck-boost converter.
As shown in
Also as shown in
Reference is made to
In the exemplary embodiment, the capacitor 150 is provided, which provides the vehicle 12 with some amount of motor run-on after the vehicle 12 has passed the end of a member 46. It will be understood however that it is possible for the capacitor 150 to be omitted, in which case any motor run-on would be provided solely by capacitors in the individual body shells 19. It will also be understood that it is optionally possible for the capability of motor run-on to be omitted from the vehicle 12. In such a case the capacitor 150 and the resistor 152 are not needed, nor the circuit boards 154 with the capacitors 156 thereon. A plurality of body shells 19 could still optionally be provided if desired to at least change the appearance of the vehicle 12.
It will be noted that a slightly different embodiment of the chassis 20 appears in
The body shells 19 and capacitors 156 may together be referred to as performance-altering members, each of which are removably connectable to the base portion 169 of the vehicle 12. The first performance-altering member (which includes the body shell 19a) electrically controls the motor 30 to operate a first way in response to a given input (e.g. a given amount of time travelling over a member 46). The second performance-altering member (which includes the body shell 19b) electrically controls the motor 30 to operate a second way in response to a given input (e.g. the aforementioned given amount of time travelling over a member 46). In the embodiment described above, when the first performance-altering member is connected to the base portion 169, the motor operates for a first period of time in response to a given input, and when the second performance-altering member is connected to the base portion, the motor operates for a second period of time in response to a given input.
As described above, the base portion 169 includes a voltage-controlled switch (in this case, MOSFET 111) which controls current flow through the motor 30. A main voltage source (in this case, power source 28) is selectively connectable to the voltage-controlled switch to control the state of the voltage-controlled switch. As described above, in the preferred embodiment, each performance-altering member includes a secondary voltage source (in this case, the capacitor 156), which, when connected to the base portion 169 of the vehicle 12, controls the voltage-controlled switch to keep the voltage-controlled switch closed for a selected period of time after disconnection of the main voltage source from the voltage-controlled switch.
As described above, the capacitor 156 is chargeable by the main voltage source when the main voltage source is connected to the voltage-controlled switch.
As described above, the first body shell 19a represents a first type of vehicle (in this case a racecar) having a first level of performance, and the second body shell 19b that represents a second type of vehicle (in this case a sedan) having a second level of performance.
Reference is made to
In an alternative embodiment, the backing member 124 may include a second steering-related magnetically-responsive member 86 instead of or in addition to including a second drive-related magnetically-responsive member 46.
By providing the vehicle with the voltage boosting circuit 98, the vehicle 12 can be provided with sudden bursts of acceleration, which are greater than can be achieved by driving the motor with the battery 96 alone. By providing a guideway with accelerator sections 60 and some sections that are non-accelerative, the battery power on the vehicle 12 can be extended relative to a set where the vehicle is always being driven by the battery, without loss of enjoyment of the play experience. By providing reconfigurability to the guideway the accelerator sections can be positioned where desired so as to accelerate the vehicle by selected amounts prior to certain features, such as a jump or a loop-the-loop section (shown at 99 in
While the above description constitutes a plurality of embodiments of the present invention, it will be appreciated that the present invention is susceptible to further modification and change without departing from the fair meaning of the accompanying claims.
Claims
1. A set, comprising:
- a miniature vehicle including a chassis, a plurality of wheels rotatable with respect to the chassis, a motor, wherein the plurality of wheels includes at least one driven wheel that is drivable by the motor, a power source connectable to provide power to the motor, a switch operatively connected to control power transmission from the power source to the motor, and a first drive-related magnetically-responsive member that is positionable in a first position wherein the first drive-related magnetically-responsive member opens the switch to disconnect the motor from the power source, and a second position wherein the first drive-related magnetically-responsive member closes the switch to connect the motor to the power source; and
- a second drive-related magnetically responsive member that is positionable to interact with the first drive-related magnetically responsive member to move the first drive-related magnetically-responsive member to the second position when the first drive-related magnetically-responsive member is sufficiently close to the second drive-related magnetically-responsive member, thereby closing the switch and causing the motor to drive the at least one driven wheel.
2. A set as claimed in claim 1, further comprising a guideway that includes a base and a pair of guide walls positioned to guide the vehicle.
3. A set as claimed in claim 2, wherein the second drive-related magnetically responsive member is positioned in the guideway.
4. A set as claimed in claim 3, wherein the second drive-related magnetically-responsive member is positioned in the base of the guideway.
5. A set as claimed in claim 4, wherein the guideway is made up of a plurality of connectible sections, wherein one of the connectible sections is an accelerator section which has the second drive-related magnetically-responsive member thereon.
6. A set as claimed in claim 5, wherein the accelerator section is selectively positionable at any one of a plurality of positions along the length of the guideway.
7. A set as claimed in claim 6, wherein the accelerator section is one of a plurality of accelerator sections which are selectively positionable at a plurality of positions along the length of the guideway.
8. A set as claimed in claim 1, wherein the first drive-related magnetically-responsive member is a magnet and the second drive-related magnetically-responsive member is a ferrous metal.
9. A set as claimed in claim 1, wherein the first drive-related magnetically-responsive member is biased towards the first position.
10. A set as claimed in claim 1, wherein the plurality of wheels includes at least one steerable wheel, wherein the vehicle further includes a steering linkage connected to the at least one steerable wheel, wherein the steering linkage has a first steering-related magnetically-responsive member thereon and is positionable in a first position to steer the vehicle generally straight forward, in a second position to steer the vehicle towards the left and a third position to steer the vehicle towards the right, wherein the steering linkage is biased towards the first position,
- and wherein the set further includes a second steering-related magnetically-responsive member that is positionable to interact with the first steering-related magnetically responsive member to cause movement of the steering linkage to one of the second or third positions when the first steering-related magnetically-responsive member is sufficiently close to the second steering-related magnetically-responsive member.
11. A set as claimed in claim 10, wherein the first steering-related magnetically-responsive member is a left first steering-related magnetically-responsive member and is movable when sufficiently close to the second steering-related magnetically-responsive member to cause movement of the steering linkage to the second position, and wherein the steering linkage further has a right first steering-related magnetically-responsive member thereon that is movable when sufficiently close to the second steering-related magnetically-responsive member to cause movement of the steering linkage to the third position.
12. A set as claimed in claim 11, wherein the second steering-related magnetically-responsive member is removably connectable to a selected one of the guide walls.
13. A set as claimed in claim 11, wherein the second steering-related magnetically-responsive member is removably connectable to a selected one of the guide walls at any one of a plurality of positions along the length of the guideway.
14. A set as claimed in claim 1, wherein the second steering-related magnetically-responsive member is positioned in the base of the guideway.
15. A set as claimed in claim 14, wherein the guideway is made up of a plurality of connectible sections, wherein one of the connectible sections is a steering section which has the second steering-related magnetically-responsive member thereon.
16. A set as claimed in claim 1, wherein the power source includes a battery.
17. A set as claimed in claim 16, wherein the power source further includes a voltage boosting circuit that stores charge from the battery at a higher voltage than the battery voltage and that drives the motor when the switch closes.
18. A set as claimed in claim 17, wherein the voltage boosting circuit is a boost converter.
19. A miniature vehicle, comprising:
- a chassis;
- a plurality of wheels rotatable with respect to the chassis;
- a motor, wherein the plurality of wheels includes at least one driven wheel that is drivable by the motor;
- a battery;
- a voltage boosting circuit that stores charge from the battery at a higher voltage than the battery voltage and that is selectively connectable to the motor; and
- a switch that is selectively closeable to operatively connect the voltage boosting circuit to the motor.
20. A miniature vehicle as claimed in claim 19, wherein the voltage boosting circuit is a boost converter.
21. A set, comprising:
- a miniature vehicle, including a chassis, a plurality of wheels rotatable with respect to the chassis, a motor, wherein the plurality of wheels includes at least one driven wheel that is drivable by the motor, a battery, a voltage boosting circuit that stores charge from the battery at a higher voltage than the battery voltage and that is selectively connectable to provide power to the motor, a switch that is selectively closeable to operatively connect the voltage boosting circuit to the motor; and
- a switch controller that is external to the vehicle and that controls the position of the switch.
22. A set as claimed in claim 21, wherein the vehicle includes a first drive-related magnetically-responsive member that is positionable in a first position wherein the first drive-related magnetically-responsive member opens the switch to disconnect the voltage boosting circuit from the motor, and a second position wherein the first drive-related magnetically-responsive member closes the switch to connect the voltage boosting circuit to the motor,
- and wherein the switch controller includes a second drive-related magnetically responsive member that is positionable to interact with the first drive-related magnetically responsive member to move the first drive-related magnetically-responsive member to the second position when the first drive-related magnetically-responsive member is sufficiently close to the second drive-related magnetically-responsive member, thereby closing the switch and causing the motor to drive the at least one driven wheel.
23. A packaging for a miniature vehicle for use with a guideway including a base and a pair of guide walls, comprising:
- a blister member; and
- a backing member connected to the blister member, wherein the backing member forms a section in the base of the guideway.
24. A miniature vehicle that includes a base portion that is driven by a motor; and
- a plurality of performance-altering members, each of which are removably connectable to the base portion of the vehicle, including a first performance-altering member that, when connected to the base portion, electrically controls the motor to operate a first way in response to a given input, and including a second performance-altering member that, when connected to the base portion, electrically controls the motor to operate a second way in response to the given input.
25. A miniature vehicle as claimed in claim 24, wherein when the first performance-altering member is connected to the base portion, the motor operates for a first period of time in response to a given input, and when the second performance-altering member is connected to the base portion, the motor operates for a second period of time in response to a given input.
26. A miniature vehicle as claimed in claim 25, wherein when the base portion includes a voltage-controlled switch to control current flow through the motor, and wherein a main voltage source is selectively connectable to the voltage-controlled switch to control the state of the voltage-controlled switch, wherein each performance-altering member includes a secondary voltage source, which, when connected to the base portion of the vehicle, controls the voltage-controlled switch to keep the voltage-controlled switch closed for a selected period of time after disconnection of the main voltage source from the voltage-controlled switch.
27. A miniature vehicle as claimed in claim 26, wherein the secondary voltage source is a capacitor.
28. A miniature vehicle as claimed in claim 27, wherein the capacitor is chargeable by the main voltage source when the main voltage source is connected to the voltage-controlled switch.
29. A miniature vehicle as claimed in claim 24, wherein the first performance-altering member includes a first body shell that represents a first type of vehicle having a first level of performance, and the second performance-altering member includes a second body shell that represents a second type of vehicle having a second level of performance.
30. A miniature vehicle as claimed in claim 29, wherein the first body shell represents a racecar and the second body shell represents a sedan.
Type: Application
Filed: Aug 12, 2011
Publication Date: Feb 14, 2013
Inventor: Andrew Kevin MILLER
Application Number: 13/208,554
International Classification: A63H 18/16 (20060101); B65D 85/68 (20060101); A63H 29/24 (20060101);