摘要:
An exemplary power switching circuit (20) includes a control signal input terminal (210); an output terminal (220); direct current (DC) power supply (230); a first transistor (250) including a control electrode connected to the control signal input terminal, a first current conducting electrode, and a grounded second current conducting electrode; a second transistor (260) including a control electrode connected to first current conducting electrode of the first transistor via a discharging resistor (264) and a diode (266) respectively and connected to the DC power supply via a discharging capacitor (265), a first current conducting electrode connected to the DC power supply, and a second current conducting electrode connected to the output terminal; and a third transistor (270) including a control electrode connected to first current conducting electrode of the first transistor, a first current conducting electrode connected to the output terminal, and a second grounded current conducting electrode.
摘要:
Disclosed is a scroll key integrally formed with a function selecting switch that selects one of at least two functions. The scroll key comprises a circuit board having a circuit provided for a predetermined function, a vertical rotation switch mounted on the circuit board with a rotation axis thereof being substantially parallel with the circuit board, first and second tact switches mounted on the circuit board in alignment with the rotation axis of the vertical rotation switch, a rotation knob rotating between the vertical rotation switch and the first tact switch in substantially perpendicular relation to the circuit board to rotate the vertical rotation switch and press the first tact switch, and a button mounted on the circuit board to press the second tact switch. Accordingly, a small-sized scroll key can be implemented and assembling of the scroll key is improved.
摘要:
An object of the present invention is to provide an input apparatus and input key capable of reducing the number of operations on the input key for input of symbols and permitting a user to designate a symbol to be inputted, by a simpler operation. An input key 10a to which a plurality of symbols or marks are assigned, has a key top 30a to be pushed, a sensor part 32 for detecting a push position on a surface of the key top 30 by a finger or the like used to push the key top 30a, a moving direction detector 34 for detecting a change of the push position of the finger or the like detected by the sensor part 32 and for detecting a moving direction of the finger or the like during movement thereof on the surface of the key top 30, and a switch 40a to change a state with a push on the key top 30, and has a converter 50 for converting a state of the switch 40a and the moving direction detected by the moving direction detector 34, into symbol information.
摘要:
A switch assembly comprises first and second tact switches located on a printed circuit board (PCB) at a predetermined interval, a shuttle body having a pair of tension ribs, including a first tension rib and a second tension rib located in parallel with each other, to turn on/off the first and the second tact switches, and a knob holding shaft provided between the first and the second tension ribs, a manipulation knob connected to the knob holding shaft of the shuttle body, rotating between a position where the manipulation knob presses one of the first and the second tension ribs to operate the corresponding tact switch and a position where the manipulation knob releases the tension rib, and a spring member connected with the knob holding shaft of the shuttle body elastically pressing the manipulation knob to the releasing position.
摘要:
First stopper face (7b) is provided on each of click teeth (7) of a click teeth portion 8 of a click mechanism (14) affording a click feeling during the rotation-operation of a rotary knob (11). Second stopper face (13b) is provided on a tooth portion (13) of a click piece (10). The first stopper face (7b) and the second stopper face (13b) cooperate to prevent the rotary knob (11) from rotating in a direction opposite to a direction indicated by an arrow A. Consequently, there is no need for providing a stopper as an additional component.
摘要:
When a control lever is slid to move a driver housed in a quadrangular case in a given direction, the movement of the driver allows the driver to push one of resilient legs of movable contacts corresponding to the direction of movement. This movement resiliently slides the corresponding movable contact along an inner surface of the sidewall of the case and brings the movable contact into contact with a corresponding fixed contact. This structure can provide a multi-directional slide switch of low profile that has a small number of members and is easily assembled.
摘要:
A multi-directional key switch assembly comprises first stage switches and second stage switches of different kinds disposed alternately arrayed at 45.degree. on a common circle at angular intervals on a printed-circuit board, a truncated semi-spherical shell shaped rolling member disposed on the board in overlying relation to thee switches, slide members disposed on the undersurface of the semi-spherical shell shaped rolling member in opposition to the corresponding first stage switches, and actuating means disposed in correspondence with the second stage switches. A key top is mounted on the rolling member and has an integral operating stick extending from the undersurface thereof. The operating stick is inserted in a receiving bore formed through the rolling member from the upper surface to the undersurface thereof along the central axis thereof. Rolling the rolling member by pressing on the key top will cause the corresponding first stage switch to be turned ON, and further continued rolling of the rolling member will actuate the corresponding second switch to turn it ON.
摘要:
A lever switch includes a pivoting knob 4, an inner lever 22 having the pivoting knob 4 fixed at an extremity thereof and a manipulation rod at another extremity thereof, and a second lever 6 having a pipe-shaped portion, through which a shaft bar of the inner lever passes. The inner lever 22 is formed in one body with the manipulation rod, which has a toothed-wheel-shaped engaging portion 22b at another extremity portion. The toothed-wheel-shaped engaging portion has a thickness of teeth t1 on the side of a shaft bar 22c that is greater than a thickness of teeth t2 on the side of a case. The engaging portion 22b is formed so as to protrude in a direction inclined with respect to a center line of the shaft bar 22c.
摘要:
A switch assembly (100) includes a first switch (102), a second switch (104) and a third switch (106). The switch assembly further includes a rocker actuator (108) having a first rocker arm (152) and a second rocker arm (154) and a selector actuator (110). The rocker actuator pivots about a post (158) to actuate the first switch or the second switch. The selector actuator is disposed between the first switch and the second switch to slidingly actuate the third switch. In one application, a radiotelephone (800, 904) includes a switch assembly (840). A controller (914) responds to actuations of the rocker actuator and the selector actuator to control storage of data in a memory (926) and display of data in the display (818, 918).
摘要:
A lever switch apparatus having a lever, a switch body, and a plurality of rotatively operated knobs, wherein a connection between the lever and the switch body is made with no wire involved. The lever 2 has a first knob 21 and a second knob 24 that are rotatively operated. The lever 2 holds a first shaft 22 and a second shaft 25 that are loosely fitted axially thereinto. The first shaft 22 is coupled at its one end 22A to the first knob 21 through a transmission 23, and at its other end 22B to the movable contact 11 in the switch body 1. The transmission 23 includes the first and second gears 211 and 221. The first shaft 22 has its axis 0 offset from a rotational axis P of the first knob 21.