Abstract: A key structure in an electronic apparatus case includes a top portion that is exposed through a surface of the case, a shaft portion that extends from the top portion and includes a elastomer at a tip of the shaft portion, and a stopper portion that projects from a periphery of the top portion to engage and that is engaged so as to be in contact with the switch in the state where the elastomer is contracted.

Abstract: A portable computing device is disclosed. The portable computing device can take many forms such as a laptop computer, a tablet computer, and so on. The portable computing device can include at least a single piece housing. The single piece housing including a plurality of steps. The plurality of mounting steps are formed by at least removing a preselected amount of housing material at predetermined locations on the interior surface. At least some of the mounting steps are used to mount at least some of the plurality of internal operating components to the housing.

Abstract: An electronic device includes a case having an opening, an electronic circuit and a dust cover. The electronic circuit is disposed in the case and includes a circuit board, a switch, and an expansion card slot. The switch and the expansion card slot are electrically connected at the circuit board. The opening exposes the switch and the expansion card slot. The expansion card slot includes an electrical connector used for electrical connection with an expansion card. The dust cover is detachably disposed at the opening. The dust cover includes a cap portion, a press portion and an elastic portion. The cap portion closes the opening. The press portion faces the switch. The elastic portion is respectively connected to the cap portion and the press portion, so the press portion is capable of moving relative to the cap portion and hence has a trigger position and a release position.

Abstract: An illuminated, waterproof and dust-proof switching element for converting a linear movement of a push button into an electrical switching signal, has a housing and a cap which is axially displaceable within the housing along a stroke path between two end bearings. The cap has a protective membrane for external sealing that is formed from a flexible plastic material by way of multicomponent injection molding. The switching element includes within the housing at least four contacts, a pressure compensation element, a circuit board on which at least one push button and at least two lighting elements are arranged, a silicone pad as a restoring element, a guide, an end stop, a cap with integrally molded protective membrane, and a frame. At least two pairs of the contacts have a like contour including a linear arrangement in the region of a plug and rectangular arrangement in the interior.

Abstract: A door handle arrangement for vehicles including an electrically insulating cover having an outer actuating surface for a user characterized by at least one metal actuating electrode disposed on the inner side of the cover that is on the side of the cover facing away from the actuating surface. The cover is elastically deformable by an actuation in the area of the actuating surface. The arrangement includes at least one sensor electrode that is disposed at a distance from the actuating element and opposite the inner side of the cover, wherein the sensor electrode lies opposite the actuating electrode at least in certain sections so that the distance between actuating electrode and sensor electrode is variable during deformation of the cover in the region of the actuating surface. The arrangement also includes a control and evaluation device which is coupled at least to the sensor electrode to detect a capacitance between sensor electrode and actuating electrode.

Abstract: An electronic device can include a housing, a printed circuit board received in the housing, a key, and an adjusting member. The housing defines a through hole. The key is coupled to the housing and partially received in the through hole. The adjusting member is across the through hole. The adjusting member is movably coupled to the housing and contact the key.

Abstract: A glass keyboard includes a patterned glass sheet having a plurality of glass keys arranged in a keyboard layout. Each of the glass keys includes one or more cantilevered glass tabs integrally formed in the patterned glass sheet. Each glass tab is deflectable from a plane of the patterned glass sheet. A conductive layer is arranged in opposing and spaced-apart relation to the patterned glass sheet. The conductive layer has a plurality of contact pads in positions corresponding to the glass tabs. A plurality of pressure pads is disposed between the cantilevered glass tabs and the contact pads and configured to selectively transfer contact pressure from the cantilevered glass tabs to the contact pads when the cantilevered glass tabs are selectively deflected from the plane of the patterned glass sheet.

Abstract: Disclosed a trigger switch including: a case having a switch chamber in which a switch mechanism is arranged in a sealed state; a plunger inserted slidably into a shaft hole formed on one end side of the case, coupled to the switch mechanism, and biased forward; and a trigger provided on a distal end of the plunger for operating the switch, wherein the switch mechanism includes an air pressure stabilizing mechanism configured to cancel an air compressing action in the interior of the switch chamber caused by the switch mechanism moving in the interior of the switch chamber. The air pressure stabilizing mechanism includes a communication hole extending from a rear end opening facing the switch chamber to a distal end opening on the plunger, and a plunger-engaging portion of the trigger includes a discharge port communicating with the communication hole and configured to release air from the communicating hole.

Abstract: A button assembly includes a keycap, a washer, a positioning member, and a fixing member. The keycap includes a resisting member and an operating member. The operating member extends through a through hole of a sidewall of an electronic device and extends external to the sidewall of the electronic device. The washer is provided between the resisting member and the sidewall to seal a gap between the resisting member and the sidewall. The washer pivots on the operating member. The positioning member is fixed to a bottom of the electronic device. The positioning member separates from the sidewall of the electronic device by a preset distance. The fixing member affixes a flexible circuit board of the electronic device to the positioning member. The fixing member is provided to position a switch of the flexible circuit board abutting against the resisting member at a position opposite to the keycap.

Abstract: A switch includes a button which is connected to a ring-shaped permanent magnet that is magnetized along a z-axis, a guide member made from an non-ferromagnetic material inside which the button and the ring-shaped permanent magnet are arranged so as to be moveable along the z-axis, as well as at least one sensor that has a sensitive area that is arranged inside the ring-shaped permanent magnet and that is configured to measure a change in a magnetic field in the radial direction within a x-y-plane, wherein the x-axis and the y-axis lie orthogonally to the z-axis, respectively.

Abstract: A toy for providing input to a computing device includes a main body sized and shaped to fit within a grasp of a user of the toy. The toy also includes input switches mounted to the main body. Each of the input switches can switch between a first position and a second position responsive to an action performed on the input switch. The toy also includes a removable outer covering that is configured to substantially encapsulate the main body. A top surface of the covering includes openings sized and shaped to receive a portion of each of the input switches. The toy includes a programmable processing circuit enclosed within the main body. The circuit includes input ports coupled to the input switches. The circuit includes an output port coupled to a communications port to transmit output signals and programmable processing circuitry configured to operate in a plurality of operating modes.

Abstract: The disclosure relates to a button assembly for a device, such as an electronic device. The button assembly may include a button and a seal. The button may fit within a space defined by the seal. A portion of each of three sealing surfaces may each seal and press against respective surfaces of the button.

Abstract: An engine start switch includes a substrate on which electronic components are mounted, a case which is formed in a cylindrical shape by a peripheral wall portion surrounding the substrate and of which at least one end portion is opened, and a support member that supports the substrate in the case and extends toward the open end of the case from one end portion thereof supporting the substrate. The support member includes an outer surface that faces an inner surface of the peripheral wall portion with a gap interposed therebetween, and a gap at the one end portion of the support member is wider than a gap at other portions excluding at least the one end of the support member.

Abstract: The present invention relates to a switch device (100) for use in hand-held power tools. The switch device (100) may include at least one chamber (102) whose interior serves as an accommodation space. The chamber (102) may partially encase an operational member (104) for actuating the hand-held power tool through the switch device (100). Further, the switch device (100) is provided with multiple holes (202) on side walls (204) of the chamber (102) to create a passageway for external particulate materials. Also, a bottom surface (205) of the chamber (102) may be sloped to extend from an interior of the chamber (102) to each of the multiple holes (202), to enhance the discharging of the external particulate materials through the holes (202).

Abstract: An electronic device includes: a printed circuit board; a casing including an upper case that covers the printed circuit board from an upper face side and a lower case that covers the printed circuit board from a lower face side, the casing housing the printed circuit board; a keyboard interposed between the printed circuit board and the upper case; an expansion unit interposed between the keyboard and the lower case; and a support member including a lattice portion that is interposed between the keyboard and the printed circuit board and that supports the keyboard with respect to the printed circuit board, with a portion of the lattice portion formed with an expansion unit housing opening that the expansion unit is disposed in.

Abstract: Cylindrical switch assemblies and methods of making the same are provided. Cylindrical switch assemblies can mitigate false presses by using switch assembly designs with vertically or near vertically mounted activation elements positioned around a perimeter of a button. The activation elements (e.g., switches) of the switch assemblies may be fixed to a vertical sidewall of a bracket and positioned such that a portion of the activation elements extend beneath the button. When the button is actuated by a user, the button activates the activation elements. Positioning multiple activation elements around the perimeter of the button ensures that the user can press anywhere on the button and still activate the activation elements.

Abstract: Button assemblies including water tight seals and methods for making the same are provided. The button assembly can include a button made from a rigid material having a cosmetic portion and a post. The post may extend from a bottom surface of the button and activate a switch of the electronic device when the button is actuated. Additionally, the button assembly can include a sealing member made from a compliant material having a post receiving hole. The sealing member may be secured to the button and an interior surface of a housing of the electronic device. The post receiving hole may fit around and engage the post. In some embodiments, the button may include a cavity and the sealing member may include a protruding member. In these embodiments, the cavity can receive the protruding member to provide for better registration of the sealing member to the button during assembly.

Abstract: A process analytic device includes a metallic enclosure having electronics disposed therein. The enclosure has an enclosure wall with a reference surface. A plurality of operating rods is provided. Each operating rod is configured to pass through an aperture in the enclosure wall and to cooperate with the enclosure wall to provide a flame quenching pathway. A plurality of electrical switches is provided where each electrical switch is aligned with a respective operating rod, and is mounted a controlled distance from the reference surface. Each operating rod transfers movement to a respective electrical switch through the flame quenching pathway.

Abstract: Techniques and apparatus to provide improved visibility to user input devices, such as keys, are disclosed. In low light conditions, keys can be difficult to distinguish. For example, often keys have legends on them to visually distinguish them from one another, but in low light conditions it can be difficult for users to visually distinguish the different keys. The legends can be textual and/or graphic. Hence, according to one embodiment, light from a nearby display device can be used to provide illumination to the user input devices (e.g., keys). More particularly, in one embodiment, some light from the nearby display device can be directed towards and reflected from the user input devices (e.g., keys) to enhance visibility of the keys or the legends thereon.

Abstract: A manually operated switch assembly is disclosed. The switch assembly includes a housing, a switch mechanism, and an actuator assembly. The switch mechanism is housed within the housing and is configured to open or close a circuit upon actuation. The actuator assembly is shiftably supported by the housing and generally includes a depressible actuator and a stability element. The actuator presents an actuator length and serves to actuate the switch mechanism when depressed. The stability element is configured to ensure that the actuator moves substantially uniformly along the actuator length when the actuator is depressed such that actuation of the switch mechanism is facilitated regardless of where the actuator is depressed along the actuator length. The switch assembly may be waterproofed, and be formed, at least in part, by a curable liquid sealant supplied to the switch assembly from a single fluid source.

Abstract: A sealed physical button for use with a portable electronic device that effectively presents ingress of liquids. Embodiments include a button cap having flange portions that interlock with complementary flanges from a button retainer. The button cap may also include a downward oriented central post, proportioned and oriented to interface with the top surface of a button attached to a bracket. The button retainer may include an aperture sized and positioned to receive the central post of the button cap. The button retainer may rest on a shelf within the electronic device housing such that the shelf interposes the bracket and the retainer to form a rigid seal.

Abstract: A mobile terminal device that includes a frame that supports a structure of the mobile terminal, a button that fits with a hole in the frame, a gasket that contacts with the button, a first area of which contacting with the button being configured to move when the button is pushed, and a second area of which being fixed to the frame by an adhesive, processing circuitry, and a switch that contacts with the gasket, and moves and applies current to the processing circuitry when the gasket moves in response to the button being pushed.

Abstract: An illuminated, waterproof and dust-proof switching element for converting a linear movement of a push button into an electrical switching signal, has a housing and a cap which is axially displaceable within the housing along a stroke path between two end bearings, the cap being provided with a protective membrane for external sealing that is formed from a flexible plastic material by way of multicomponent injection molding, wherein the switching element includes within the housing at least four contacts, of which at least two pairs of the contacts are designed with a like contour and together follow a rearrangement from a linear arrangement thereof in the region of a plug or other connector to a rectangular arrangement in the interior, a pressure compensation element, a circuit board on which at least one push button and at least two lighting elements are arranged, a silicone pad as a restoring element, a guide, an end stop, a cap with integrally molded protective membrane, and a frame.

Abstract: The present utility model discloses a demonstration switch structure of a lamp, comprising: a demonstration test switch which is fixedly installed on a battery case of the lamp, and a mechanical press control device which is fixedly installed on the battery case of the lamp and capable of movably pressing a control terminal of the demonstration test switch, wherein a control component of the mechanical press control device extends to a switch window of a packing box of the lamp. The present utility model has the following advantageous effects: the packing cost is reduced greatly, the hidden danger of electric leakage due to contact of a pluggable wire in the conventional demonstration switch structure with water is eliminated, and the hidden danger of short circuit of a lamp set is eliminated.

Abstract: Disclosed a trigger switch including: a case having a switch chamber in which a switch mechanism is arranged in a sealed state; a plunger inserted slidably into a shaft hole formed on one end side of the case, coupled to the switch mechanism, and biased forward; and a trigger provided on a distal end of the plunger for operating the switch, wherein the switch mechanism includes an air pressure stabilizing mechanism configured to cancel an air compressing action in the interior of the switch chamber caused by the switch mechanism moving in the interior of the switch chamber. The air pressure stabilizing mechanism includes a communication hole extending from a rear end opening facing the switch chamber to a distal end opening on the plunger, and a plunger-engaging portion of the trigger includes a discharge port communicating with the communication hole and configured to release air from the communicating hole.

Abstract: A switch through hole 22 is formed in a front cabinet 5a, and a press switch 21 is located in the front cabinet 5a to correspond to the switch through hole 22. With a pressing element 25 inserted in a plate through hole 28a of a reinforcing plate 28, an outer periphery of a middle portion of the pressing element 25 in an axial direction and the plate through hole 28a are connected by a silicone rubber 27. A key top 26 is coupled to one end of the pressing element 25 in the axial direction so as to be exposed from the switch through hole 22, and a switch assembly 24 is fitted in the switch through hole 22. This structure increases durability of a push-button switch, while increasing ease of assembly of a push-button switch structure.

Abstract: An environmental seal is formed around a square sensor disposed beneath a circular button cap within a button assembly. The button assembly includes shelf portions each extending separately into the interior of the assembly from a sidewall of the assembly. Portions of the sidewall are exposed between the shelf portions large enough to permit the four corners of the square sensor to contact the sidewall. The button cap is set above the sensor, resting upon the shelf portions. A first sealant bonds the top faces of the shelf portions to the bottom of the button cap. A second sealant bonds the edges of the sidewall to the corners of the sensor. The second sealant interfaces with the first sealant to form a complete environmental seal.

Abstract: A switch unit including a case that has an opening and a switch two terminals that partially project to an outside of the case from the opening, a gasket configured to seal the opening, the gasket including two through-holes through which the terminals extend, a base member, and a pressing member that is arranged between the terminals, where the gasket is in close contact with the terminals at the through-holes, a region between the through-holes of the gasket is pressed while nipped between the pressing member and the base member and a surrounding region in the gasket is pressed while nipped between an inside surface of the case and the base member.

Abstract: A push button of a medical manipulating part comprising: a first, pot-shaped, shell-shaped or box-shaped housing piece, at least some sections of which contain conductive material, with an integrally molded switching spring and a continuous wall, a second housing piece, the shape of which mates with the wall of the first housing piece and is inserted therein in a hermetically sealed manner such that a hollow space is formed between the first and second housing pieces underneath the switching spring and at least one mating contact for the switching spring, said mating contact being hermetically sealed and electrically isolated relative to the first housing piece, being led through the second housing piece and extending into the hollow space underneath the switching spring.

Abstract: Methods, systems, or apparatuses for impeding the entrance of foreign contaminates into a housing of a gaming machine may include a gaming controller, a panel, and an input device mounted to the panel. The input device may include a housing. The housing of the input device may include a first section, a second section, and a member moveable with respect to the first and the second sections, wherein the moveable member is configured to be actuated by a player to provide input to the gaming controller; and a membrane disposed between the first section and the panel, wherein the membrane impedes the entrance of foreign contaminates into the housing.

Abstract: An operator control device with push buttons (1), in particular a remote key fob for motor vehicles. The operator control device comprises a housing and at least one push button (1), which is mounted in the housing in such a way that it can move between stops (2, 8), and which penetrates a cutout in the housing. The cutout is defined by an edge (6), wherein the edge (6) extends into the interior of the housing with at least one section.

Abstract: An engine start switch includes a substrate on which electronic components are mounted, a case which is formed in a cylindrical shape by a peripheral wall portion surrounding the substrate and of which at least one end portion is opened, and a support member that supports the substrate in the case and extends toward the open end of the case from one end portion thereof supporting the substrate. The support member includes an outer surface that faces an inner surface of the peripheral wall portion with a gap interposed therebetween, and a gap at the one end portion of the support member is wider than a gap at other portions excluding at least the one end of the support member.

Abstract: A key structure in an electronic apparatus case includes a top portion that is exposed through a surface of the case, a shaft portion that extends from the top portion and includes a elastomer at a tip of the shaft portion, and a stopper portion that projects from a periphery of the top portion to engage and that is engaged so as to be in contact with the switch in the state where the elastomer is contracted.

Abstract: A water-proof button assembly includes a seat, a sealing member, a button and a contact member. The seat has an opening and an inward protrusion extends inward from the inside of the opening. The sealing member is installed in the opening and has a through hole which is defined by an outer portion. The outer portion contacts the inward protrusion of the seat. The diameter of the outer portion is larger than the diameter of the button. The contact member is located corresponding to the button and contacts the inward protrusion. When the button is pressed, the force pushes the sealing member to contact against the inside of the opening of the seat to enhance the sealing effect between the sealing member and the opening. The sealing member provides a bouncing force for returning the button to the initial position.

Abstract: Provision of a waterproof device capable of improving waterproof property in a push-in operation portion formed by including an extensible member, a holding member and an operation shaft. A wrist watch (portable device) 11 includes an outer case (device outer housing) 12, an extensible member 32 with waterproof property, a holding member 41 attached to the case 12 and an operation shaft 51. The case 12 includes a seating portion 29 and a hole 30. The extensible member 32 includes a cylindrical portion 33 which can be extended/retracted in an axial direction, closing one end as well as opening the other end, and inserted into the hole 30, and a flange 35 projecting integrally from an outer periphery of the other end portion of the cylindrical portion and seated on the seating portion 29.

Abstract: An electrical appliance housing including a hard plastic housing body defining a switch-actuating aperture. The aperture is sealed with a soft plastic membrane. An actuating button is fastened to a hard plastic base that is bonded to the membrane.

Abstract: An electrically conductive structure of a micro switch capable of letting users know about the reciprocal movement of a switch button, comprising a base, having an electrode module installed in a containing groove formed at the top of the base; an axis cylinder slidably installed in the containing groove; a conical sleeve made of a soft high temperature resisting material and disposed between the axis cylinder and the electrode module; a metal conductive bump formed at the top of the conical sleeve and driven by the axis cylinder to compress and release the conical sleeve to connect and disconnect the electrode module, and the axis cylinder moves reciprocally to produce a hand-pressing feeling, and the containing groove has as sheathe made of a soft high temperature resisting material to block external liquid from entering into the containing groove to improve the service life of the switch.

Abstract: An electronic device 28 with an effective water sealing button system 26 comprising a special compression gasket seal with compressive faces 30 and 32 and deformable annular seal portions 34 and 36 to dynamically seal a moveable side key 20 providing a button 22 against a housing 40 of the electronic device and accommodate non-binding sliding movement of the side key while controlling the spacing and tactile feel of the side key.

Abstract: A push switch comprising: a button made of a flexible material having a cap shaped top operation part, a flat part formed extending laterally from an edge of an opening in the top operation part, and a side wall formed extending downward from an outer edge of the flat part; a switch substrate fitted in close contact with the inner circumference of the side wall and abutting the bottom face of the flat part of the button; and a switch arranged inside the button, on the switch substrate, wherein the outer circumferential face of the side wall of the button and the bottom face of the switch substrate are covered by integrally molded resin.

Abstract: A trigger switch includes a case having a switching mechanism inside thereof and open on one side, a cover configured to be fitted inside an opening of the case to close the opening, and a trigger arranged outside of the case and configured to operate the switching mechanism by sliding operation via the plunger. An engaging depression is formed on an inner wall surface defining an opening edge portion of the case. A shoulder is formed on an outer peripheral end edge portion of the cover. An engaging projection is formed to project outward from a side surface of the shoulder to a small extent so as to be capable of engaging with the engaging depression corresponding thereto. A joint groove is formed by the inner wall surface of the opening edge portion of the case and the shoulder, and the joint groove is filled with an adhesive agent.

Abstract: An improved handheld electronic device is provided with a display and a unique edge to edge qwerty keypad. The specially arranged qwerty keypad has special side keys and intermediate keys which cooperate with the housing to provide a waterproof casing (case) and sealing system to seal and protect the keys, backlighting, flexes, domes and printed circuit board (PCB) from water.

Abstract: An electronic device includes a housing defining a hole and a button structure. The button structure includes a button cap passing through the hole and an elastic member. The elastic member includes a first connection part, a second connection part, and a body. The first connection part and the second connection part are connected via the body, the first connection part is connected to the housing, and the second connection part is connected to the button cap.

Abstract: A key button apparatus is provided. The key button apparatus includes a housing having an opening, a moveable key button, a sealing member configured to seal the opening of the housing, deformed by movement of the key button, and molded of a plurality of elastic bodies made of different materials, and a switch disposed inside of the housing and pressed by deformation of the sealing member.

Abstract: A button assembly for displaying an illuminated symbol with a locking ring having an outer surface. A solid light guide is positioned within and spaced apart from the locking ring. The light guide has a top surface for displaying an illuminated symbol and a bottom surface with a light receiving member having a refracting surface with a first lens member for receiving and directing light to the top surface of the light guide. A resilient sealing member is mounted on the locking ring and interconnects the locking ring and the light guide. The sealing member has an unsupported portion that facilitates movement of the light guide relative to the locking ring.

Abstract: Disclosed are a mobile terminal and a method for manufacturing same. The mobile terminal of the present invention comprises: a rear-side case provided with a side key mounting portion, having on a plate surface thereof a side key through-hole; a waterproof tape which is provided on the inner surface along the edge of the side key through-hole of the side key mounting portion; and a side key unit which couples to the waterproof tape. According to the present invention, provided are the mobile terminal and the method for manufacturing same, the mobile terminal having a superior waterproof function and which is easy to produce and assemble.

Abstract: Disclosed herein is a keyboard, including: a membrane switch having contacts disposed at positions thereof corresponding to keys; a spacer member provided on the membrane switch and having openings at least at portions thereof corresponding to the keys; a resilient member provided on the spacer member and spaced from and opposed to the membrane switch through the openings; and a key member provided at a portion of the resilient member which corresponds to each of the keys.

Abstract: A seal structure for a switch mechanism includes a switch disposed in a housing, an operating member protruding forward from the housing through an opening formed in the housing and configured to turn on or off the switch, a rubber cover attached to the operating member from a front-side of the operating member and having a rear end engageable with the opening, and a fixing cover fixed to the operating member from outside the rubber cover so as to integrate the rubber cover with the operating member. In this seal structure, the rubber cover seals gap between the opening and the operating member.

Abstract: A push button switch includes: a support structure of a generally box-like shape, defining an internal space, the support structure having at least an opening communicating with the internal space and an opening axis, the opening being defined by an internal opening edge; an actuation mechanism having a push button and a mechanical coupling arrangement for connecting the push button to the support structure, the mechanical coupling arrangement having a guiding arrangement for the push button to traverse with respect to the support structure in a direction generally parallel to the opening axis; a key which is fixable to the push button for manually actuating the push button; and an anti-jamming protection device having a protective plug interposable between the key and push button and being appliable onto the support structure for interacting with the internal edge, to protect the guiding arrangement from undesired intrusion by dust particles and such.

Abstract: Button assemblies including water tight seals and methods for making the same are provided. The button assembly can include a button made from a rigid material having a cosmetic portion and a post. The post may extend from a bottom surface of the button and activate a switch of the electronic device when the button is actuated. Additionally, the button assembly can include a sealing member made from a compliant material having a post receiving hole. The sealing member may be secured to the button and an interior surface of a housing of the electronic device. The post receiving hole may fit around and engage the post. In some embodiments, the button may include a cavity and the sealing member may include a protruding member. In these embodiments, the cavity can receive the protruding member to provide for better registration of the sealing member to the button during assembly.

Abstract: In a vehicle push button switch, a case fixed to a vehicle body or a lid is provided with a guide portion for guiding a push button and supports a switch used to change a switching state in response to a push operation of the push button. The switch is protected by using a sealing structure. The case includes: a first case member; a second case member fixed to the first case member; and an elastic member interposed between the first and second case members. The push button is connected to the center portion of the elastic member, and the switch housed in a housing chamber formed between the first case member and the elastic member is supported by the first case member such that the switching state is changed in response to bending of the elastic member which occurs with the push operation of the push button.