Abstract: A button structure for actuating a switch includes a pressing part, a protruding part connected to a side of the pressing part for being driven to actuate the switch when the pressing part is pressed, and a constraining part. An end of the constraining part is connected to the pressing part in an elastically deformable manner. A guiding slot is formed on the constraining part. The button structure further includes a fixing part. An end of the fixing part is disposed inside the guiding slot. The guiding slot slides relative to the fixing part when the pressing part is pressed.

Abstract: A back lighted membrane keyboard includes a key housing, a membrane, a key support plate, a membrane circuit board, an insulative plate, a light guide membrane plate, and a base plate. The key housing, the membrane, the key support plate, the membrane circuit board, the insulative plate, and the light guide membrane plate are aligned by inserting stems thereinto. Eventually, these components are subjected to ultrasonic welding to be bound together.

Abstract: A button device includes a button unit, a resilient member, and a switch unit. The button unit includes a button, a transparent power icon member, and a retaining member. The power iron member is attached to the button. The retaining member includes an elastic element, a tray located at one end of the elastic element, and a fixing loop located at the other end of the elastic element. The button and the power iron member are retained on the tray. The tray includes a seat with a hole for receiving an illuminator, and reflects lights of the illuminator to the power icon member. The resilient member is sandwiched between the button unit and the switch unit to reset the button unit back to its original position.

Abstract: The invention relates to a data input device produced by means of a switch operated by a stem. A return spring enables the stem to return to a stable position. According to the invention, the device comprises a circular element that can be displaced roughly perpendicularly to the displacement of the stem, a cam attached to the stem, and elastic means holding the circular element pressed against the cam, the cam comprising a slope, a high point and a counter-slope on which the circular element bears in succession when the stem is operated from its stable position to a position in which the switch is operated.

Abstract: A switch unit (40) is mountable to a distal end of a handpiece of an electrically-activatable surgical tool, such as an ultrasonically-vibratable surgical tool. The switch unit (40) has a generally bullet-shaped outer form with an axial bore (42) through which a waveguide of the tool extends. A resiliently deformable band (1) extends around the switch unit (40) above a polygonal-section contact zone (2), such that fingertip pressure on the band (1) may locally depress the band (1) towards a flat area (12) of the contact zone (2). Switch contacts (11) are mounted to an inner surface of the band (1) opposite a plated circuit (10) located on each flat area (12) so as to form a plurality of switches. A switch to activate the tool is thus easily accessible to a user's fingertip in any orientation of the handpiece in the user's hand. The switch contacts (11) may each comprise a body having an electrical resistance dependent on a pressure exerted thereon.

Abstract: The present invention provides a switch that is equipped with a driving device for establishing electrical connection and adapted to a power supplying apparatus, and a power supplying apparatus provided with the same. The power supplying apparatus has a main body, an output port, a voltage-selecting circuit and a switch for commanding the voltage selecting circuit to select the output voltage that is to be output via the output port. The switch has a plurality of resilient conductive terminals and at least one driving device. The insertion of a driving device will selectively establish electrical connection among some of the resilient conductive terminals, enabling the switch to form a circuit for adjusting the output voltage of the power supplying apparatus.

Abstract: A keypad assembly, comprising: a main body made of metal, the main body defining a plurality of slots and the slots enclosing a plurality of pressing buttons thereon, each pressing button defining at least one symbol slot, the main body having a contact surface and a operating surface; and a light-transmissive filling member, the filling member defining a plurality of protruding strips and the protruding strips enclosing a plurality of button areas thereon, each button area having at least one symbol block protruding therefrom, the filling member bonding to the contact surface with the protruding strips and the symbol blocks respectively engaging in the corresponding slots and the symbol slots. A method for making the present keypad assembly is also described.

Abstract: What is disclosed is a multi-directional momentum-change sensor, adaptable to a variety of practical applications, including, but not limited to, its use as a collision-detector for automatic passenger-safety airbag deployment systems in a motor vehicle. In one embodiment, the sensor is an electro-mechanical switch having a pivotable boom assembly that is responsive to sudden changes to forward and lateral momentum that exceeds a predetermined threshold. The pivotable boom assembly is able to close electrical circuits to external circuitry that pertain to the position of the boom member in order to allow for the sensing of collisions along different vectors and facilitate safety responses, such as the deployment of automobile passenger-safety airbags.

Abstract: Embodiments provide circuit breakers with stops adapted to prevent a lug screw from falling out of circuit breaker and/or to prevent the lug screw from blocking a wire receiver of circuit breaker lug body. In one aspect, a circuit breaker is provided having a circuit breaker housing; a lug assembly retained in the circuit breaker housing, the lug assembly including a threaded screw hole; a lug screw having driving end and a threaded shaft inserted in the threaded screw hole; and a back-out stop adapted to contact the driving end and limit an extent of backward movement of the lug screw out of the threaded screw hole. Other aspects are provided.

Abstract: A pushbutton switch includes a pushbutton for changing a switching mode of a tact switch provided on a switch holder fixedly disposed within a casing. The pushbutton includes a push operation portion disposed in a through hole provided in the casing and a collar that protrudes outwardly from the push operation portion and faces an inner face of the casing at the peripheral edge of the through hole. The pushbutton is connected to the switch holder and resiliently urged toward the side on which the collar gets closer to the inner face of the casing. Projections projecting toward the inner face of the casing are projectingly provided integrally at a plurality of positions spaced in the peripheral direction on an opposing face, of the collar of the pushbutton, that is opposed to the inner face of the casing. This prevents a freezing problem in the operation of a pushbutton.

Abstract: A key assembly for use in an electronic device is provided. The key assembly includes a plurality of dome switches and a plurality of single-piece keycaps. Each keycap identifies a row of keyboard characters. Each keycap has a plurality of character-representing portions separated by deforming portions. Each character-representing portion is associated with a separate one of the plurality of dome switches. The key assembly further comprises a plurality of actuators for activating the dome switches. Each actuator has a first side which is engaged by one of the character representing portions of the keycap. Each actuator has a second side which engages the dome switch associated with that character-representing portion. In a rest state in which the keycap is not depressed, at least some of the actuators preload at least some of the dome switches by exerting a force upon the dome switches.

Abstract: A switching device, in particular an automatic switch, a disconnecting switch or a contactor, installable according to different operating configurations and preferably for use in low voltage systems. The device comprises a case containing at least a pair of contacts, one or more accessory devices for controlling and/or setting the operation of the switching device and user interface means, capable of performing output and/or input functions relative to the accessory devices. These interface means comprise at least a display which shows information relative to the output and/or input functions according to a viewing direction. The switching device also comprises means to select the viewing direction which are operatively connected to the display. These selection means allow selection of the viewing direction on the display as a function of the installation configuration of the switching device.

Abstract: The invention relates to a domed contact component controlled by mechanical activation, which comprises an outer static conducting member (10), an inner static conducting member (12) and a resilient metal contact dome (18) which is in constant and static contact with the outer static conducting member (10). The dome (18) has a central contact part and a linking part, the periphery of which is electrically connected and mechanically linked to the outer static conducting member (10). The linking part comprises arms (22) having a portion (26) with elastic properties in the radial direction, and a stud (24) for fastening the outer static conducting member. Application to bank cards provided with keys.

Abstract: The subject matter of the invention is an electric thermostat fitting control switch (10) for actuating the fitting. The switch (10) can be mounted in a bore (4) in a lining element, for example of a washstand or wall. The switch (10) is held in the bore (4) by the holder designed as a pad (30) firmly secured in the bore (30a) of the lining element.

Abstract: An interlock system for actuating a switch to interrupt a flow of electrical current to a component of a domestic electrical appliance is described. The current is interrupted unless a sensor indicates that the appliance is in a safe condition, and the system includes a rod-like member which is turned about its own axis through at least a predetermined angle, when the appliance is safe, to actuate the switch to permit current to flow. The safe condition is typified by the secure placement of a lid or cover on a receptacle in a manner intended for operation of the appliance. Moreover, the lid or cover for the receptacle may be formed with an upstanding, chimney-like feed-tube through which food items can be added for processing in the receptacle, and a “pusher” device, sized to fit closely within the feed tube, is further provided, by means of which a user can urge foodstuffs into the receptacle for processing.

Abstract: A rotary switch section R includes a brush unit 60 rotatably operated by a lever 72 and a plurality of fixed contacts. The brush unit 60 includes a pair of main contact shoes 62, 63 and a single auxiliary contact shoe 64. The fixed contacts include a main contact 24 with which the main contact shoes 62, 63 come into contact with the lever 72 is at its neutral posture N, a pair of contacts 25L, 25R with which the auxiliary contact shoe 64 comes into contact first when the lever 72 is rotatably operated, and second contacts 26L, 26R with which one of the main contact shoes 62, 63 comes into contact subsequently.

Abstract: An anti dumping switch includes a circular and hollow housing, a bottom surface connected to the housing, a first switch end, a second switch end, a bush, and two balls, the housing and the bottom surface cooperatively defining a accommodating space, the first switch end and the second switch end both extending into the accommodating space through the bottom surface and fixed in the bottom surface, the balls being received in the accommodating space.

Abstract: A low powered activation electronic device includes a power source, an electronic circuit, having two spaced apart electrodes, electrically connected to the power source to form an opened circuit, and two fabric contacts made of textile material provided at the two electrodes of the electronic circuit, wherein the electronic circuit is formed a closed circuit to activate the electronic device in responsive to a physical touch by a human operator at the two fabric contacts.

Abstract: A key-press assembly includes a PCB, an elastic member and a key-press. The PCB forms a contact section on a surface thereof. The elastic member is configured to be mounted on the PCB corresponding to the contact section and includes a pressing portion, a first extension, a second extension, a connecting portion and a trigger portion. The first extension extends out from a circumference of the pressing portion. The second extension extends out from an outer boundary of the first extension parallel to the pressing portion. The electrical connecting portion extends out from a peripheral edge of the second extension and configured to be connected to the contact section. The trigger portion is formed at a junction of the first extension and the second extension correspondingly. The key-press is mounted on the elastic member for sandwiching the elastic member with PCB.

Abstract: A depressible key structure includes a key frame, a keycap, and plural elastic arms. The key frame has a receiving hole. The keycap is accommodated within the receiving hole, and includes plural outer corner portions. Each of the elastic arms includes an inner fixed arm part, at least one outer movable arm part, and a corner transition part interconnected between the inner fixed arm part and the at least one outer movable arm part. The corner transition parts of the elastic arms correspond to respective outer corner portions of the keycap. Each of the inner fixed arm parts is positioned at an inner edge of a specified side of a bottom surface of the keycap. A corresponding corner transition part is protruded out of the specified side to an adjacent side along a corresponding outer corner portion. The outer movable arm part is fixed on the key frame.