Abstract: An electric switch module has one or more electric switches arranged on a substrate (7) of which at least one is designed as a push-pull rocker switch (2, 3) having an actuator (4) formed by a projection (5) that is asymmetrical to its tilting axis (6). The module is characterized in that the top side of the substrate (7), together with the actuators (4) of its switches (2, 3), is covered by a flexible outer skin (10a) that also covers the projection (5) that forms the actuator (4) of the at least one rocker switch (2, 3).

Abstract: A pointing device including an operating section shiftably supported on a base section, a magnet carried on the base section or the operating section, and a magneto-electro transducer carried on the other close to the magnet. A first part securely holding one of the magnet and the magneto-electro transducer and shiftably supported on the base section in a horizontal direction relative to the base section, and a second part connected to and elastically biasing the first part towards a home position in a horizontal shifting range when the first part is horizontally shifted along the base section. The second part integrated with a major portion surrounding a circumference of the first part that has a first connecting portion connected to the first part and a second connecting portion connected to the base section, and exerting an even elastic biasing force irrespective of a shifting direction of the first part.

Abstract: An improved electrical switch nut and boot seal assembly is provided having a stainless steel or aluminum nut and flexible boot to provide an exemplary fluid seal between an electrical switch and the electrical switch nut and boot seal device. The electrical switch may be a toggle switch or push button type circuit breaker or any other type electrical switch device where the advantages of the present invention make themselves useful such as may exist on any control panel of a recreational vehicle (i.e., boat, snowmobile, or other type land or water craft). A key feature of the invention is that the nut and flexible boot are separate pieces that can be mixed and matched to change the outer shape and/or colors of the various nuts and/or flexible boots. The fluid and moisture seal is provided by capturing a flange of the flexible boot between various inner surfaces of the nut and electrical switch.

Abstract: A side key assembly (10) and a portable electronic device (200) using the side key assembly (10) is provided. The side key assembly (10) includes a key cover (12), a soft portion (142) and a hard portion (144) that can be firmly adhered to a housing of the portable electronic device ?200?. Using this structure, the opportunity for dust or water to enter the portable electronic device (200) is reduced.

Abstract: A device includes a printed circuit board having a first surface and a second surface. The printed circuit board defines an opening therethrough from the first surface to the second surface and a circuit formed on the first surface of the printed circuit board with no portion of the circuit intersecting the opening. The second surface of the printed circuit board at least partially bounds a first channel in fluid communication with the opening. A method of venting includes displacing air within a cavity of a switch by moving the air through one or more channels formed in a layer defining cut-outs in fluid communication with the cavity. The air is moved through an opening formed in a printed circuit board. The layer is positioned at a first side of the printed circuit board. In addition, the method includes moving the air through a venting channel positioned at a second, opposite side of the printed circuit board and into the surrounding environment.

Abstract: A multifunctional key device is provided for an electronic product which has a top cover with a receiving hole, and a micro stick switch coupled electrically to a circuit board. The multifunctional key device includes a rubber sealing member sandwiched between the top cover and the circuit board, and a key button body. The rubber sealing member includes a skirt portion extending upwardly from a top face thereof into the receiving hole, and a button coupling portion integral with the skirt portion and having a top open end. The key button body is fitted to the micro stick switch, and has a top end face exposed from the top open end of the button coupling portion to permit a user's finger to press directly the key button body.

Abstract: An electrical switch may include a housing having a hollow inner cavity. Both mechanical and electrical components may be contained within the inner cavity. The components within inner cavity may be protected from contaminants entering the inner cavity by a seal adjacent to an opening of the housing leading from the inner cavity. The seal may allow movement of an actuator mechanism between various configurations relative to the seal, while continuing to prevent contaminants from entering the inner cavity.

Abstract: A switching device capable of preventing entrance of water from outside of a case through a space below an operation knob into the case is disclosed. The switching device includes: a switch; a case within which the switch is accommodated; a hollow cylinder which is formed integrally with the upper surface of the case and open to above and below to communicate with the inside of the case; an operation knob provided to cover an upper opening of the cylinder such that the operation knob can swing; and an operation bar which extends through a lower opening of the cylinder into the case to transmit the motion of the operation knob to the switch. A concave is formed on the upper surface of the case at a position around the cylinder. A lid for covering a part of the concave is provided on the concave near the cylinder.

Abstract: A switching device has a switch, a case within which the switch is accommodated, a cylinder which is provided on an upper surface of the case and open to above and below to communicate with the inside of the case, an operation knob which covers an opening of the cylinder and swings in a front-to-rear direction, and an operation bar which extends from the operation knob through the opening into the case to transmit the motion of the operation knob to the switch. A guide member is disposed between the case upper surface and the end of the operation knob. The guide member is inclined in the left and right directions so as to guide water toward the sides of the case.

Abstract: A waterproof structure for switch pins includes a pin exposed outside a switch to be connected to an electric wire. The pin and the electric wire are covered by a waterproof insulation material through an injection forming process to become an integrated manner. The pin and electric wire are fully waterproof. The electric wire also can be fastened firmly to the pin to prevent separation of the two.

Abstract: A switch for vehicles, which temporarily holds the screw maintaining reliability, can be easily assembled, and is particularly suited for detecting the opening and closure of doors. An insertion hole is formed in a cylindrical portion of a cover covering the upper surface of a mounting plate and an operation body, the insertion hole extending into a through hole of the mounting plate. A screw is forcibly held in the insertion hole. This prevents an inconvenience of the screw escaping when a shock is given or a force is exerted from the lower side during the transit or while being attached to the vehicle.

Abstract: A light switch assembly to replace an existing light switch, which generally includes a mounting bracket attached to an electrical box. The assembly slides into the mounting bracket and is locked into place with the mounting bracket. A decorative light switch cover and custom artwork within the frame snaps and locks onto the outer perimeter of the mounting bracket to complete the assembly. The assembly provides for a battery back-up system for power failure situations to illuminate the white, light emitting diodes in the event of a loss of power. The assembly senses the loss of power and unlocks the switch assembly from attachment to the mounting bracket. Unsnapping the decorative cover exposes the switch assembly so it can be removed from the mounting bracket. The switch assembly then becomes a mobile, hand-held emergency flashlight. The battery back-up system also allows for communication with first responders.

Abstract: Button holes 3 are formed in a front panel 2. Buttons 4 are arranged in the button holes 3, and a rib 7 convexly provided on the back surface of the front panel 2 surrounds the button holes 3. A light transmitting rubber sheet 11 closes a space 30 surrounded by the rib 7 and is held between a circuit board 15 and the rib 7. Contact portions 12 are provided on the rubber sheet 11 so as to be brought into contact with and separated from the circuit board 15 by the elastic force of the rubber sheet 11. Light emitting elements 17 are mounted on the circuit board 15 so as to correspond to the buttons 4, and are accommodated in accommodation concave portions 18 in the rubber sheet 11.

Abstract: A fire resistant assembly, which may include a first layer having a lumen therein, a second layer adjacent the first layer, a first structural member disposed between the first and second layers, and a box having a cavity defined by a wall, a first opening in the wall, a second opening in the wall, a panel having a panel opening fastened to the box about the second opening, and a fixture installed in the cavity and having conduit extending through the second opening and the panel opening.

Abstract: A switching device capable of preventing entrance of water from outside of a case through a space below an operation knob into the case is disclosed. The switching device includes: a switch; a case within which the switch is accommodated; a hollow cylinder which is provided on the upper surface of the case 1 and open to above and below to communicate with the inside of the case 1; an operation knob provided to cover the upper opening of the cylinder such that the operation knob can swing; and an operation bar which extends through the lower opening of the cylinder into the case to transmit the motion of the operation knob to the switch. A projection is provided on the upper surface of the case in the vicinity of the cylinder. The lower end of the operation knob is opposed to the upper end of the projection with a small clearance interposed therebetween when the operation knob is not shifted.

Abstract: A switching device includes a switch, a case within which the switch is accommodated, a cylindrical hollow section which is disposed on the upper surface of the case and has upper and lower openings to communicate with the inside of the case, an operation knob provided to cover the upper opening of the cylindrical section such that the operation knob can swing, and an operation bar penetrating through the lower opening of the cylindrical section and extending to the inside of the case so as to transmit the motion of the operation knob to the switch. A projection for preventing water from entering into the case is provided on the outside surface of the cylindrical section opposed to the inside surface of the operation knob.

Abstract: A switch includes an actuating member, a cap, and a soft elastic sleeve-shaped member for preventing entrance of water and dust; the actuating member has a base portion, and a second wall projecting upwards from the base portion; the cap has a pressing portion, a first wall projecting downwards from the pressing portion, and a loop-shaped recess abutting the pressing portion on an outer side of the first wall; the cap is joined to the actuating member with the first wall being encompassed by the second wall; the soft elastic member has a pressed portion projecting inwards from an upper end, and a protrusion extending downwards from an inner edge of the pressed portion; the soft elastic member is fixed with the downward protrusion being fitted in the loop-shaped recess, and the pressed portion being tightly pressed between the pressing portion of the cap and the second wall.

Abstract: A tubular part of an upper case has an opened upper end and pivotably supports a segment operating body. The tubular part has a pair of first walls opposite to each other and a pair of second walls that are connected to the first walls and are opposite to each other. Upper ends in substantially the middles of the first walls are positioned higher than upper ends of the second walls and are provided with holes pivotably supporting the segment operating body. The main body of the operating body has protruding parts that extend toward the second walls. The protruding parts each has a substantially circular arc shape with the rotation center as the center.

Abstract: A switch assembly held in a support member by a bushing mounted to the support member by a clip carried in an outer groove formed on the bushing. A compressible seal ring is carried in another outer groove formed on the bushing so that the seal ring acts on another surface of the support member to form a seal.

Abstract: A switch assembly is disclosed which can serve as a custom night light and a light switch assembly with a battery back-up system that automatically unlocks in the event of a power failure. The switch assembly can be removed from an electrical box for mobile emergency use as a flashlight. The assembly can also have a mini-membrane switch, which when actuated, can emit or transmit a RF/Microwave signal to outside emergency response personal, providing location information to the response personal. The personal locator system can use battery back-up power to communicate with established emergency response frequencies.

Abstract: A waterproof button knob includes an elastic button seat with a housing trough mating with a button port of a case. The button seat isolates the interior and the exterior of the case to achieve waterproofing. The housing trough has a plurality of apertures on the bottom. The housing trough holds a button cap that has a plurality of button stems extended downwards to pass through the apertures and form a tight coupling. The button stems may be moved to hit switches located in the case.

Abstract: A watertight key unit includes a key and an elastic sealing part. The key is mounted on a key-mounting wall, extends through a key-inserting hole in the key-mounting wall, and has a peripheral wall. The sealing part extends from a lower end of the peripheral wall of the key, has a peripheral wall that surrounds the peripheral wall of the key, and cooperates with the peripheral wall of the key to define a spacing groove therebetween. The peripheral wall of the sealing part is surrounded by and abuts elastically and sealingly against a hole-defining wall of the key-inserting hole.

Abstract: A switch has a housing (11), a pair of switching units (17, 18) with buttons (19) that can be depressed to operate each switch unit, and a rocker (23) pivotally mounted on the housing to pivot clockwise and counterclockwise from a neutral position. An elastomeric diaphragm (30) mounted on a top wall (12) of the housing, extends across an aperture (13) in the housing, with first and second lower parts (28, 29) of the rocker passing through the diaphragm to rest closely above the buttons on the switch units. The diaphragm not only largely seals the switch units, but biases the rocker towards the neutral position.

Abstract: A toggle switch apparatus is disclosed, which includes a toggle mechanism and a plurality of basic switches maintained within a tubular housing. An actuator is associated with at least one spring which together can serve to actuate the plurality of basic switches. A lead wire termination assembly can also be configured within the tubular housing, wherein the lead wire termination assembly comprises a plurality of lead wires attached to a plurality of pin contacts that exit through a cover of the tubular housing, thereby permitting the toggle switch apparatus to be actuated manually in a maintained position during high gravity conditions. The tubular housing can be configured as a sealed metal tube. A header can also be sealed into the tubular housing utilizing a glass-to-metal seal.

Abstract: A device is provided to prevent unauthorized opening of the garage door by interrupting the flow of electrical power to the automatic garage door opener. A power-interrupting switch, suspended from a desired overhead location in the garage, is interposed between the power source and garage door opener to selectively interrupt or complete the flow of electricity to the garage door opener. By interrupting the electrical flow, the garage door opener is deactivated and will remain unresponsive to a possible unauthorized remote control signal.

Abstract: A movable contact is mounted on the vicinity of one end of a movable contact piece having a generally U-like shape and made of an elastic member. A recess of a generally circular arc-shape in section is formed on the vicinity of the other end of the movable contact piece to extend in the direction of the width thereof. The movable contact piece is swingably supported by the movable contact piece support member, and a generally circular arc-shaped tip in section of a movable contact piece actuator of an operation button is engaged with the recess. The movable contact piece actuator swingable with the swinging movement of the operation button causes the movable contact piece to be swung to the switch-on position where the movable contact thereof comes into contact with a fixed contact mounted on a fixed contact piece or the switch-off position where the movable contact is away from the fixed contact.

Abstract: The switching element (1) of the switch per this invention is closely enveloped, at least in the area of its free end, by an elastic diaphragm (5) which also encloses, at a distance, the contact surfaces (2) facing the switching element (1) and which is tightly connected to the switch housing (4; 6). This tightly seals the contact region against the external environment of the switch and thus reliably prevents contamination and oxidation of the contact surfaces. As another advantageous feature, the number of switch components is thus reduced, a mechanical spring is not needed for retaining the switching element (1) in its engaged position, and the design permits miniaturization.

Abstract: A modulated button assembly has a button and a base. The base has a receiving space defined therein, two first through holes defined in a side face defining the receiving space to be receivable therein two bosses on one pair of the connecting plates, a second through hole defined in a side face relative to the side face having the two first through holes to be receivable therein one boss of the other pair of connecting plates and a push bar extending downward from a bottom of the base for engagement with a deformable metal plate received in the housing of the switch.

Abstract: A dustproof and waterproof switch includes a casing, a contact pole device, an axial joint member, a catch member and a covering member. The characteristic is in that the axial joint member is placed in the casing and lap joined to support members the axial joint member having a fitting hole at the center thereof and having an axial plate at the front and the rear sides thereof respectively; the catch member is formed a frame and placed in a mold to allow the concave downward plane at the top thereof joined to the upper arc recess of the covering member, which is made by way of injection molding, and the catch member is attached between the two axial plates with the bottom thereof having a central hollow post fitting with an extendable stir rod and the stir rod piercing the rod plate and the lower end of the stir rod contacting with the arc contact pole; and the covering member at the bottom edge thereof extends an inner connecting rim for fitting with the casing and covering the upper part of the casing.

Abstract: A multi-function switch structure includes a multi-function switch provided on a base plate to pivot in a prescribed direction and a rubber film provided on the base plate to cover at least a portion of the outer surface of the multi-function switch. The rubber film is adhered to the multi-function switch. The rubber film is provided with a portion easing tension of the rubber film caused by pivoting movement of the multi-function switch.

Abstract: A dust and moisture free switch includes a hollow casing, a contact pole device, a control plate and an isolation part. The contact pole device is inserted to the bottom of the casing with a stationary pole and a support pole being inserted into and locating at a respective pole hole and an arc pole being attached to the top of the support pole such that the arc pole can swing leftward and rightward. The control plate is joined to the upper portion of the casing and has the bottom thereof being arranged with a central hollow post to fit with an extensible stir lever, which has a bottom thereof contacting with the arc pole. The isolation part is made of soft high molecular plastic material and passed through by and fitting with the stir lever so as to be located at and closely joined to the inner wall of the casing to perform a function of blocking dust or moisture to enter the bottom of the casing.

Abstract: A toggle switch includes a one piece integrated plate, stand off, and bushing. The stand off has protrusions extending therefrom, and the stand off and the protrusions form a seal receptacle and determine a stand off depth of the plate from a panel. An O-ring seal is seated around the bushing and within the seal receptacle. The toggle lever extends through an opening of the bushing. The bushing and the toggle level are inserted through a hole in the panel until the protrusions engage the panel. The switch cover is fastened to the panel using a single fastener so that the O-ring seal is squeezed between the stand off and the panel to provide a seal between the panel and the switch cover.

Abstract: A toggle switch has a switch cover, a toggle lever, and a one piece pre-molded seal. The switch cover has an opening, and the toggle lever extends through the opening into the switch cover. A neck of the one piece pre-molded seal surrounds the toggle lever and provides sealing between the toggle lever and the switch cover. The one piece pre-molded seal also may have a planar portion that provides sealing at an interface between the switch case and the switch cover.

Abstract: A rocker button assembly 10 is provided, including a button body 12 and a pivot element 14. At least one noise reducing element 20 covers a portion of the pivot element 14 and thereby reduces the generation of noise generated by the pivot element 14 as the rocker button assembly 10 rotates.

Abstract: A lighting system for an off-road vehicle includes one or more exit lights that are activated upon operator demand and that are automatically deactivated a designated period of time after exit lights activation, thereby facilitating the operator's departure from the vehicle. The lighting system includes an electrical power source, at least one running light, at least one exit light, and a control system that is coupled to the power source and to the lights and that controls operation of the running light and the exit light. The control system includes a manually operated switch movable between (1) an OFF position in which neither the running light nor the exit light is coupled to the power source, (2) a running light activation position in which at least the running light is coupled to the power source, and (3) an exit light activation position.

Abstract: A dust and moisture free switch includes a hollow casing, a contact pole device, a control plate and an isolation part. The contact pole device is inserted to the bottom of the casing with a stationary pole and a support pole being inserted into and locating at a respective pole hole and an arc pole being attached to the top of the support pole such that the arc pole can swing leftward and rightward. The control plate is joined to the upper portion of the casing and has the bottom thereof being arranged with a central hollow post to fit with an extensible stir lever, which has a bottom thereof contacting with the arc pole. The isolation part is made of soft high molecular plastic material and passed through by and fitting with the stir lever so as to be located at and closely joined to the inner wall of the casing to perform a function of blocking dust or moisture to enter the bottom of the casing.

Abstract: Methods of controlling fluid flow (e.g., flow of liquids, water vapor and gases) through switch members, e.g., switch buttons, which are used to seal an interior cavity of a surgical handpiece are provided. The switch members provide improved sealing properties which prevent gas and water vapor transmission across the switch member and into and out of the sealed internal switch chamber. The switch members are also resistant to puncture due to striking by tools or cleaning instruments, or the like.

Abstract: A light switch cover is disclosed for use with conventional “rocker” and “toggle” type switches. The cover generally includes a mounting bracket which is attached to the electrical box, along with the switch and a face plate which is attached to the mounting bracket. For “rocker” type switches, the face plate is preferably constructed from a soft material to allow the user to operate the covered “rocker” switch, but can be made of a combination of hard and soft materials. For “toggle” type switches an aperture is provided in the face plate to operate the toggle. Preferably, the outer surface of the face plate is provided with a decorated design or other indicia. The light switch can also be utilized where more than one switch is provided.

Abstract: The invention relates to an electrical switch with a housing (2). In the housing (2) there is a contact system (3), to which a switching effect can be applied by means of an actuating member (6) which is arranged in an opening (5) on the housing (2) and partly protrudes out of the housing (2). The part of the actuating member (6) protruding out of the housing (2) as well as the opening (5) in the housing (2) is covered by a cap (9) allowing the movement of the actuating member (6). The cap (9) has a cover of a hard material and a sleeve-like part (11) of a flexible material, designed in the manner of a bellows. The cover, designed essentially in the manner of a planar surface (10), is arranged on the part of the actuating member (6) protruding out of the opening (5) in such a way that the actuating member (6) can be moved via a side of the cover facing the user.

Abstract: A switch device includes a first case and a second case. Stationary contacts are enclosed within the first case that is sealed by a cover. An operating lever configured to actuate a movable contact is partially received by a window hole within the cover. An engaging hook is unitary part of or is coupled to the outside surface of the second case. Stationary terminals project from the stationary contacts. The second case encloses the first case and the cover. The first case and the cover are made of resins having an arc resistance. The second case is made of a thermoplastic resin that is more flexible than the first case.

Abstract: A pedal displacement sensor includes an actuating lever and a switching element. The actuating lever is arranged in a housing, is rotatably supported on a rotational axis, and can be rotated by a pedal. The actuating element of the switching element is actuated by rotating the actuating lever. The housing of the pedal displacement sensor has an opening. The actuating lever extends through the opening to an end which engages the pedal. The actuating lever includes first and second arms which form an angle lever. The first arm is rotatably supported in the housing. The second arm extends through the opening to an end face which contacts the pedal lever. The actuating lever preferably also acts upon a transducer such as a Hall sensor and a permanent magnet.

Abstract: A water-resistant switch includes a button support, and two buttons each depressably connected to one of two connecting parts formed on the upper side of the button support. The connecting parts each has several surrounding walls, which are formed one around another and in such a manner that an inner one thereof is higher than an outer one surrounding the inner one. The buttons each has two surrounding parts formed one around the other on the bottom, and are each connected to one of the connecting parts with the surrounding parts being mounted on a respective one of the surrounding walls of the connecting parts of the support.

Abstract: A pointing device of a keyboard which comprises a chassis board for mounting a plurality of keys. The chassis board comprises a hole positioned at its approximate center for mounting the pointing device. The pointing device comprises a pedestal installed below the hole of a chassis board, an elastic pad mounted between the chassis board and the pedestal with a hole positioned below the hole of the chassis board, and a control bar vertically fixed to the pedestal and protruding through the holes of the elastic pad and the, chassis board. The elastic pad is tightly clamped between the pedestal and the chassis board for preventing liquid above the chassis board from leaking into the space below the chassis board and the pedestal through the hole of the chassis board.

Abstract: An environmentally sealed switch includes a switch housing, and a stationary contact mounted within the switch housing. A moveable contact is mounted within the switch housing. The moveable contact has a first position electrically making with the stationary contact and a second position electrically breaking with the stationary contact. An actuator is moveably mounted within the switch housing for actuating the moveable contact between the first and second positions. An internal portion of the actuator has an external neck extending through an actuator opening defined by the switch housing. A membranous boot seal surrounds the neck of the internal actuator portion. The boot seal has a first and second opening. The first opening includes a first border engaged against a periphery of the neck, and the second opening includes a second border that is retained in the switch housing and surrounds the neck of the internal actuator portion.

Abstract: A moving member 20 for operating a contact mechanism is provided in a body case 12 in such a manner as to be movable in its projecting and retracting direction. A rubber-made waterproof cap 23 is provided on a front portion of the body case 12 in such a manner as to cover the moving member 20. When a door 31 is closed, the moving member 20 including the rubber cap 23 is pressed by the door 31 to turn off the contact, whereas when the door 31 is opened, the pressing force is canceled to turn on the contact. A distal wall portion of the rubber cap 23 is formed of a low-friction member to form a low-friction portion 23b. Consequently, contact surfaces of the rubber cap 23 and the door 31 are formed as low-friction surfaces, and contact surfaces of the rubber cap 23 and the moving member 20 are also formed as low-friction surfaces.

Abstract: A water-resistant switching device has an elastomeric body overmoulded to one part of the casing. The elastomeric body has a rib which co-operates with a hooked flange portion to define a space for receiving a hooked flange of another part of the casing to provide a watertight seal.

Abstract: The invention includes a switch and sealing arrangement that provides positive sealing and is easy to assemble. The invention includes a switch housing having an upper compartment that is in communication with an exterior of the switch housing and has drainage slots therein. The upper compartment is separated from a lower compartment by an inner base in which a cylindrical barrel extends upwardly from the inner base. The lower compartment of the switch housing receives an electrical contact switch therein that is controlled by an actuator lever that is in contact with a post extending through the cylindrical barrel from a rocker button. A seal is provided that has an outer lip and an inner opening and is mounted on the upwardly extending cylindrical barrel such that the outer lip engages an outer surface of the cylindrical barrel. The post of the rocker button fits into the inner opening of the seal and seals the lower compartment from upper compartment when the rocker button is engaged to the switch housing.

Abstract: In an apparatus comprising a housing wall formed with a passage closed by an elastically deformable cover which has a raised portion and comprising switching means arranged behind the cover, a switching function of the switching means can be actuated only when a raised portion is moved into an operating position in which the cover has a recessed shape in the area of the raised portion.

Abstract: A waterproof lever switch, for use in various kinds of electric systems for an automobile engine, door, etc., includes: a waterproof ring made of synthetic rubber and attached in first and second circumferential grooves formed opposite each other in a disk part of a lever and a base, respectively, to form a watertight space between first and third approximately circularly-shaped recesses formed inside of both first and second circumferential grooves, an appropriate switch mechanism being mounted in the watertight space. The lever includes a lever part and the disk part and is rotatably mounted at a set angle on the base. The first circumferential groove is formed in an inner face of the disk part of the lever. The first approximately circularly-shaped recess is formed inside the first circumferential groove. A second approximately circularly-shaped recess is rotatably engaged at a set angle with the disk part of the lever and is formed in a surface of the base.

Abstract: A switch unit is provided, which includes: an operative body being swingingly operably provided; a first contact portion being abuttable on one end portion of the operative body when the operative body is swingingly operated; a second contact portion being abuttable on the other end portion of the operative body when the operative body is swingingly operated; a fulcrum piece extending from a middle portion of the operative body in a direction where the operative body comes into contact with and gets off the first and second contact portions; a fulcrum receiving portion facing the fulcrum piece; an elastic support member to support the operative body in a state that the fulcrum piece and the fulcrum receiving portion have a gap therebetween when the operative body is not operated and to permit the fulcrum piece to approach the fulcrum receiving portion when the operative body is operated.