Abstract: A thickness detecting sensor can widely set a dynamic range for detecting the thickness of a medium, and exactly detect the thickness of the medium even when the dynamic range is widely set in this way. Therefore, the thickness detecting sensor has a fixing electrode and a movable electrode arranged so as to be opposed to each other, a plunger for changing the gap between the electrodes by coming in contact with the medium, and a CR oscillating circuit and an FV converting circuit for converting electrostatic capacity stored between the electrodes into an electric signal for detecting the thickness of the medium. The rear end portion of the plunger comes in contact with the electrode face of the gap side of the movable electrode. The movable electrode is displaced in the direction separated from the fixing electrode correspondingly to the thickness of the medium.

Abstract: A thickness detecting sensor can widely set a dynamic range for detecting the thickness of a medium, and exactly detect the thickness of the medium even when the dynamic range is widely set in this way.

Abstract: A circuit substrate 8 mounting a flow sensor 6 thereto is stored into a concave portion 7 formed on the lower face of a mouse case 2. When a mouse 1 is moved, a flow of the air is relatively caused by inertia of the air, etc. The movement of the mouse 1 is detected by detecting the flow velocity of this air by the flow sensor 6.

Abstract: A pressure sensor is formed by sandwiching a pressure-sensitive dielectric membrane between and in contact with a pair of electrodes. As pressure is applied, the dielectric constant of the pressure-sensitive membrane changes while the distance of separation between the pair of electrodes remains constant. This change in the dielectric constant is detected by a circuit as a change in the electrostatic capacitance between the electrodes to measure the applied pressure. Since the pressure-sensitive dielectric membrane is not required to undergo any elastic deformation for measuring the pressure, the pressure sensor can be made extremely thin.

Abstract: A pressure sensor is formed by sandwiching a pressure-sensitive dielectric membrane between and in contact with a pair of electrodes. As pressure is applied, the dielectric constant of the pressure-sensitive membrane changes while the distance of separation between the pair of electrodes remains constant. This change in the dielectric constant is detected by a circuit as a change in the electrostatic capacitance between the electrodes to measure the applied pressure. Since the pressure-sensitive dielectric membrane is not required to undergo any elastic deformation for measuring the pressure, the pressure sensor can be made extremely thin.

Abstract: A single vibration sensor producing multistage outputs corresponding to various vibrational acceleration values is disclosed. This vibration sensor is the type in which vibrational acceleration causes a movable gravitation element to move, and the movement of the element exerts pressure on a plunger which actuates a switch mechanism and outputs a signal. A feature of this vibration sensor is the switch mechanism includes a number of discrete switch units each having a different operating sensitivity. The switch units have a number of movable members which are displaced by the plunger when the vibrational acceleration causes the movable gravitation element to move, and a number of fixed contacts corresponding to these movable members with which the movable contacts come in contact. The spatial relationship of the fixed contacts with respect to the movable members is a feature which determines the operational sensitivity.

Abstract: A pressure sensor includes a detection unit 1 having capacities C1 and C2 varied by a predetermined external action, a reference detection 2 unvaried by the predetermined external action, a first oscillator 31 and 32 for generating a detection frequency signal according to the capacities C1 and C2 of the detection unit 1, a second oscillator 33 for producing a reference frequency signal according to the capacity of the reference unit 2, and measuring circuits 34, 35, 36 and 37 for measuring the number of the periods of the detection frequency signal within a predetermined period of the reference frequency signal to produce a measured signal. The sensor can minimize a detection error, and directly convert the change of capacity into a pulse signal (digital signal) without convertion into an analog, so that the circuit construction be simplified and realized at a reduced cost.

Abstract: A pressure receiving member which has a diaphragm held in a pressure receiving case is manufactured independently of a main sensor body member, which has a switch accommodated in a switch case. The pressure receiving member and the main sensor body member are then assembled to provide a pressure sensor. According to the present invention, since the pressure receiving portion and the main sensor body are manufactured individually, a diaphragm movement test can be carried out individually of the testing of switch turning on and off, and hence only a satisfactory pressure receiving portion and a main sensor body which passed the respective tests will be utilized in the operation of assembling pressure sensors.

Abstract: A push-button switch including a switch base which is formed into two divisions each for mounting a switch mechanism thereon, the terminals of one circuit provided within the switch mechanism being molded in insertion in the respective division switch base, whereby the switch base is made smaller in size and simplified in assembly of the push-button switch.

Abstract: The push-button switch according to the present invention comprises a switch base, a plunger movable along a sliding portion thereof, an alternate cam pivotally provided with said plunger and guides for said alternate cam integrally formed with said sliding portion of said plunger. Therefore, the guides for the alternate cam are positioned with high accuracy with respect to the sliding portion achieving secured movement of the alternate cam.

Abstract: A push-button switch having a lamp portion and a switch portion. The lamp portion includes a lamp, a lamp holder, a lamp casing, and a housing. The lamp holder is fixed within the housing and the lamp casing moves up or down to turn off or turn on the switch. The switch portion of the push-button switch includes a switch base, a plunger, and a cam. The plunger moves in conjunction with the lamp casing and has a cam formed on one end. The cam is guided along guides that are formed on the switch base, and holds the lamp casing and plunger in a raised position in which the switch is turned off and a lowered position in which the switch is turned off.

Abstract: A push-button switch for turning on and off of a switch mechanism accommodated at one side in a housing through a plunger accommodated at the other side in the housing and moved in association with the pressure application thereto, wherein a partition wall is formed between said plunger and said switch mechanism so as to divide the interior of said housing into a plunger chamber and a switch mechanism chamber.

Abstract: A pressure receiving member which has a diaphragm held in a pressure receiving case is manufactured independently of a main sensor body member, which has a switch accommodated in a switch case. The pressure receiving member and the main sensor body member are then assembled to provide a pressure sensor.According to the present invention, since the pressure receiving portion and the main sensor body are manufactured individually, a diaphragm inversion movement test can be carried out individually of the testing of switch turning on and off, and hence only satisfactory pressure receiving portion and main sensor body which passed the respective tests will be utilized in the operation of assembling pressure sensors.

Abstract: This slide switch includes: a casing formed in a hollow box shape with an open top; several fixed contacts on the bottom surface of the casing and several terminals connected to them extending to the outside of the casing; a cover mounted to close the open top of the casing, formed with a hole opposed to the fixed contacts; and a slide member disposed inside the casing, which has a control portion protruding out through the hole in the cover and a movable contact portion made of a resilient electrically conducting material which bears against the internal bottom surface of the casing and thereby produces a biasing force on the slide member to impel it in the direction towards the cover. The movable contact portion of the slide member, according as the control portion of the slide member is moved from outside the casing, selectively connects together a combination of the fixed contacts.

Abstract: A push-button switch having a lamp portion and a switch portion. The lamp portion includes a lamp, a lamp holder, a lamp casing, and a housing. The lamp holder is fixed within the housing and the lamp casing moves up or down to turn off or turn on the switch. The switch portion of the push-button switch includes a switch base, a plunger, and a cam. The plunger moves in conjunction with the lamp casing and has a cam formed on one end. The cam is guided along guides that are formed on the switch base, and holds the lamp casing and plunger in a raised position in which the switch is turned off and a lowered position in which the switch is turned off.

Abstract: A slide switch has a switch operating member at its upper surface which is slid back and forth for operating the slide switch. An adapter is provided for operating this slide switch from the side, and has a main body which has a base and clamp members extending from opposite sides of the base to define a space between them, the clamp members being adapted to grip the slide switch between them so as to secure the adapter on the top of the slide switch with the slide switch being held at least partly in the space between the clamp members. The adapter has an actuator pivotally fixed to the main body, and this actuator has a lever portion which protrudes out from the main body to the side and an actuation portion which, with the slide switch held between the clamp members, engages with the switch operating member of the slide switch, so as to slide it as the actuator is pivoted with respect to the main body.

Abstract: This slide switch includes: a casing formed in a hollow box shape with an open top; several fixed contacts on the bottom surface of the casing and several terminals connected to them extending to the outside of the casing; a cover mounted to close the open top of the casing, formed with a hole opposed to the fixed contacts; a slide member disposed inside the casing, which has a control portion protruding out through the hole in the cover and a movable contact portion made of a resilient electrically conducting material which bears against the internal bottom surface of the casing and thereby produces a biasing force on the slide member to impel it in the direction towards the cover; and a seal member interposed between the inside of the cover and the side of the slide member facing it, the seal member being squeezed between the slide member and the cover, a seal between the inside of the casing and the outside thereby being produced.

Abstract: A switch comprising a cylindrical housing, an actuator mechanism disposed at one end of the housing for contacting an object to be sensed by the switch, a plunger slidably housed within the housing for receiving a displacement by the actuator mechanism, and a switching mechanism associated with the plunger for switching a circuit in accordance with the actuation by the plunger. The actuator mechanism includes a conical supporting member tiltably engaged with a flange member formed in the aforesaid one end of the housing.

Abstract: This slide switch includes: a casing formed in a hollow box shape with an open top; several fixed contacts on the bottom surface of the casing and several terminals connected to them extending to the outside of the casing; a cover mounted to close the open top of the casing, formed with a hole opposed to the fixed contacts; a slide member disposed inside the casing, which has a control portion protruding out through the hole in the cover and a movable contact portion made of a resilient electrically conducting material which bears against the internal bottom surface of the casing and thereby produces a biasing force on the slide member to impel it in the direction towards the cover; and a seal member interposed between the inside of the cover and the side of the slide member facing it, the seal member being squeezed between the slide member and the cover, a seal between the inside of the casing and the outside thereby being produced.