JP2008192550A - Switch device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce cost and downsize a device body. <P>SOLUTION: The switch device is provided with a housing 11 having a plurality of fixing contact points 31 on a bottom surface, a movable contact point plate 22 separating and approaching from/to the plurality of fixing contact points 31 in accordance with a pressure operation, and a click touching plate 21 generating click touching in accordance with the pressure operation. An arm part 22b of the movable contact point plate 22 is held by a holding piece 11d formed at a position separating from the bottom surface of the housing 11, after accepting a first pressure operation from a user, the click touching plate 21 is pressed in a pressure direction and flipped to press the movable contact point plate 22, then the arm part 22b of the movable contact point plate 22 and an outside fixing contact point 31b are in contact to be in a conductive state, and furthermore, if a pressing second pressure operation is accepted, a circle shape part 22a of the movable contact plate 22 and a central fixing contact point 31a are in contact and to be in a conductive state. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a switch device, and more particularly to a switch device that operates in two stages by a pressing operation of a user.

  2. Description of the Related Art Conventionally, a double action type switch device that operates in two stages according to a user's pressing operation is known. In general, in a double action type switch device, a dome-shaped movable contact plate is arranged in two upper and lower stages in an insulating housing having a plurality of fixed contacts, and when the upper movable contact plate is pressed, the upper movable contact When the plate comes into contact with the upper end surface of the lower movable contact plate and conducts, and further presses, the plate comes into contact with the fixed contact on the bottom of the housing and conducts. For example, the lower movable contact plate is positioned and fixed by an adhesive sheet having a hole that opens a contact portion with the upper movable contact plate.

In such a conventional double action type switch device, since the movable contact plates are arranged in two upper and lower stages, the number of parts is large, and it is difficult to reduce the cost and reduce the size. Moreover, since there are many plating surfaces which comprise an electrode part, the cost required for a plating process also starts. Therefore, in order to reduce the cost and reduce the size, a plurality of fixed contacts are provided at the bottom of the concave portion of the housing, a single dome-shaped movable contact plate is disposed in the concave portion, and a first pressing operation on the movable contact plate is performed. Has proposed a switch device that comes into contact with the stationary contact outside the bottom of the recess and becomes conductive, and further contacts with the center fixed contact at the bottom of the recess by a second pressing operation (see, for example, Patent Document 1). . In the switch device described in Patent Document 1, the movable contact plate is attached and fixed on the circuit board with an adhesive sheet in order to prevent deterioration of its operating characteristics.
JP 2005-276499 A

  However, in the conventional switch device as described above, a spacer is provided on the outer side of the movable contact to prevent the bent portion outside the fixed contact on the movable contact plate from sticking to the adhesive sheet by pressing operation. A non-adhesive part is provided on the sheet. For this reason, the number of parts and the manufacturing process increase, and there is a problem that the cost cannot be reduced.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a switch device that can reduce the size of the device body while reducing the cost.

  The switch device according to the present invention includes a housing having a plurality of fixed contacts on a bottom surface, a movable contact plate that comes into contact with and separates from the plurality of fixed contacts in response to a pressing operation by a user, and the plurality of fixed contacts sandwiching the movable contact plate. The switch device includes a click feeling generating member that is disposed on the opposite side of the contact and generates a click feeling in response to a pressing operation by a user, wherein the movable contact plate is disposed to face the first fixed contact. A main body portion and an arm portion extending from the main body portion and disposed opposite to the second fixed contact and disposed on the outer side of the first fixed contact, the housing being spaced apart from the bottom surface A first holding part for holding the movable contact plate in the vicinity of the end of the arm part at a position, and a second holding for holding the click feeling generating member at a position farther from the bottom surface than the first holding part. Part from the user When the pressing operation is received, the click feeling generating member is pressed and reversed with respect to the pressing direction, the movable contact plate is pressed, and the arm portion of the movable contact plate and the second fixed contact come into contact with each other to become a conductive state. Further, when receiving a second pressing operation for further pressing, the main body portion of the movable contact plate and the first fixed contact are brought into contact with each other and become conductive.

  According to this configuration, a single movable contact plate can be used for a two-stage pressing operation, so that space saving of the apparatus main body can be realized as compared with the case where a plurality of movable contact plates are used. . Moreover, since the movable contact plate is held by the first holding portion in the vicinity of the end portion of the arm portion and at a position separated from the bottom surface of the housing, a spacer is provided outside the movable contact as in the conventional switch device. Since there is no need to provide a non-adhesive portion on the pressure-sensitive adhesive sheet, it is possible to prevent a situation where the number of parts and the manufacturing process increase. As a result, it is possible to reduce the size of the apparatus main body while reducing the cost. In addition, since the click feeling generating member is arranged on the opposite side of the fixed contact across the movable contact plate, when the pressing operation is performed by the user, the pressing operation can be recognized appropriately. It becomes possible.

  The switch device further includes an insulating member disposed on the click-feel generating member side of the movable contact plate, and the housing is separated from the bottom surface than the first holding portion, while the second It is preferable to have a third holding portion that holds the insulating member at a position closer to the bottom surface than the holding portion. In this case, the insulating member is held by the third holding portion provided at a position closer to the bottom surface than the second holding portion while being further away from the bottom surface than the first holding portion. The member does not restrict the operation of the movable contact plate.

  In particular, in the switch device, it is preferable that the insulating member covers the movable contact plate over at least an outer peripheral edge excluding a part near the end of the arm portion. In this case, since the insulating member serves as a dust-proof material that prevents dust and dirt from entering the contact portion composed of the movable contact plate and the fixed contact, it results from the entry of dust and dirt. It becomes possible to prevent a malfunction or malfunction of the apparatus main body. In addition, since a part of the arm portion near the end of the arm portion is exposed, it is possible to ensure a free operation of the movable contact plate.

  In the above switch device, it is preferable that the main body of the movable contact plate has a dome shape that is bulged toward the click feeling generating member. In this case, when the first pressing operation is performed by the user, the main body portion of the movable contact plate can be separated from the first fixed contact, so that the conduction state according to the first pressing operation is achieved. And the conduction state according to the second pressing operation can be clearly identified.

  Furthermore, in the switch device, it is preferable that the movable contact plate is formed by punching a hoop material, and an arm portion of the movable contact plate is formed by a connecting bar at the time of the punching. In this case, since the arm portion of the movable contact plate is formed by the connecting beam required when punching the hoop material, the hoop material can be used efficiently, and the design and mold can be used. The structure can be simplified. As a result, the cost required for manufacturing the apparatus main body can be reduced, and the degree of freedom in design can be increased.

  In the switch device, the main body portion and the arm portion of the movable contact plate may be formed by punching a hoop material. In this case, when the arm portion of the movable contact plate is formed by a connecting bar, it is possible to prevent problems that may occur at the cut portion (the occurrence of bending or protrusion at the cut portion). It is possible to improve the accuracy in the height direction.

  According to the present invention, the first movable contact plate is provided at a position separated from the bottom surface of the housing in the vicinity of the end portion of the arm portion, while supporting a two-stage pressing operation with a single movable contact plate. Since it is held by the holding unit, it is possible to reduce the size of the apparatus main body while reducing the cost.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a perspective view showing an appearance of a switch device 10 according to an embodiment of the present invention. FIG. 1 shows a state in which the switch device 10 is fixed to a part of a frame (hereinafter referred to as “device frame”) F of a device (hereinafter referred to as “mounting device” where appropriate).

  For example, the switch device 10 is mounted as a shutter button of a digital still camera or a mobile phone device with a camera function, but is not limited thereto. That is, the present invention can be applied to any device as long as the device requires a double action type switch device that operates in two stages.

  In FIG. 1, the switch device 10 is fixed to the end face of the device frame F. However, the place where the switch device 10 is fixed is not limited to this, and can be changed and fixed as appropriate.

  As shown in FIG. 1, the switch device 10 has a space inside, a housing 11 that is fixed to the device frame F, an operation button 12 that receives a pressing operation by a user, and a part of the operation button 12. And a cover 13 that closes the housing 11 in an exposed state. At a predetermined position of the housing 11, a plurality of terminals 14 led out from a fixed contact described later provided in the housing 11 are attached. Signals from the plurality of terminals 14 are output to a control unit of the mounting apparatus via a circuit board (not shown) fixed to the apparatus frame F.

  FIG. 2 is a perspective view showing a cross section of the switch device 10 according to the present embodiment. 2 shows a cross section when the switch device 10 is cut along the one-dot chain line A shown in FIG. Hereinafter, a schematic configuration inside the switch device 10 according to the present embodiment will be described.

  As shown in FIG. 2, inside the switch device 10, a part of the operation button 12 is accommodated, and a click feeling plate 21 and a movable contact plate 22 as a click feeling generating member are accommodated. The click feeling plate 21 and the movable contact plate 22 are formed of leaf springs, and their shapes change according to the pressing operation by the user on the operation buttons 12. The click feeling plate 21 generates a click feeling associated with the pressing operation. The movable contact plate 22 is in contact with a fixed contact embedded in the bottom surface of the housing 11 according to a pressing operation, and forms a predetermined conduction state.

  Here, the internal structure of the switch device 10 according to the present embodiment will be described with reference to FIGS. FIG. 3 is an enlarged cross-sectional view for explaining the internal structure of the switch device 10 according to the present embodiment. FIG. 4 is a top view of the switch device 10 according to the present embodiment.

  FIG. 3 shows a cross section when the switch device 10 is cut along the alternate long and short dash line B shown in FIG. Further, FIG. 3 shows a case where the operation button 12 is directed upward for convenience of explanation. Further, in FIG. 4, for convenience of explanation, the components arranged above the movable contact plate 22 are omitted. In the following, description will be made with reference to the vertical direction and the horizontal direction shown in FIG.

  As shown in FIG. 3, the operation button 12 includes a head portion 12a, a shoulder portion 12b, and a leg portion 12c. The operation button 12 is in contact with the click feeling plate 21 at the lower end portion of the leg portion 12 c, and a force that pushes upward by the urging force of the click feeling plate 21 works. In a state where the pressing operation by the user is not performed (the state shown in FIG. 3), the shoulder portion 12 b and the leg portion 12 c are accommodated in the housing 11. In this case, the head portion 12 a is in a state of protruding from the opening portion 13 a formed in the cover 13. Further, the shoulder portion 12b is in contact with the inner side surface of the cover 13, and restricts the upward movement of the operation button 12.

  As shown in FIGS. 3 and 4, a recess 11 a having a circular shape is formed on the lower surface of the housing 11. A plurality of fixed contacts 31 are embedded in the bottom surface of the recess 11a. The fixed contact 31 includes a central fixed contact 31a disposed at the center of the recess 11a and a pair of external fixed contacts 31b disposed on the side of the central fixed contact 31a. The plurality of terminals 14 described above are connected to the central contact 31a and the external fixed contact 31b. The output signal from the switch device 10 to the mounting device is switched according to the contact state of the central contact 31a and the external fixed contact 31b with the movable contact plate 22.

  As shown in FIG. 4, a flat portion 11b that is set at a position higher than the recess 11a is formed around the recess 11a. An insulating sheet, which will be described later, is attached and fixed to the flat portion 11b. And the slit part 11c is formed in the position of the side part of this switch apparatus 10 in the plane part 11b. The slit portion 11c is provided at the same height as the concave portion 11a.

  A pair of holding pieces 11d for holding an arm portion of a movable contact plate 22 described later is erected at the tip of the slit portion 11c (see FIG. 3). The pair of holding pieces 11d is set to a height that is higher from the bottom surface than the recess 11a, and is set to a height that is slightly lower than the flat portion 11b.

  At a position in the vertical direction shown in FIG. 4 of the pair of holding pieces 11d, a holding base 11e set at a position higher than the plane portion 11b is formed. The holding stand 11e holds the click feeling plate 21 described above. A fixed space is provided between the holding piece 11 d and the side surface portion 11 f of the housing 11. When a pressing operation is performed by the user, the tip of the movable contact plate 22 is configured to be able to swing in this space.

  In the switch device 10 according to the present embodiment, the pair of holding pieces 11d and the holding stand 11e do not fix the movable contact plate 22 and the click feeling plate 21, respectively. This is to ensure free movement of the movable contact plate 22 and the click feeling plate 21. However, the configuration of the pair of holding pieces 11d and the holding base 11e is not limited to this. If these free movements can be secured, the movable contact plate 22 and the click feeling plate 21 may be held so as to be fixed. Here, the pair of holding pieces 11d constitutes a first holding part, the holding base 11e constitutes a second holding part, and the flat part 11b constitutes a third holding part.

  Here, the configuration of the movable contact plate 22 will be described. As shown in FIG. 4, the movable contact plate 22 is composed of a circular portion 22a constituting the main body portion and an arm portion 22b. The circular portion 22a has a dome shape that slightly bulges upward (see FIG. 3). The arm portion 22b extends to the side from the opposing position on the outer periphery of the circular portion 22a, and has a T shape at the tip. Although the case where the tip of the arm portion 22b has a T-shape is shown here, the shape of the arm portion 22b is not limited to this, and can be changed as appropriate. For example, a straight shape only extending from the circular portion 22a may be used. The lower surface of the circular portion 22a and the arm portion 22b of the movable contact plate 22 is subjected to silver plating.

  The movable contact plate 22 is disposed at a position where the arm portion 22b is placed on the pair of holding pieces 11d. Specifically, the circular portion 22a is disposed at a position corresponding to the recess 11a, and the arm portion 22b is disposed at a position corresponding to the slit portion 11c and the pair of holding pieces 11d. In particular, as shown in FIG. 4, the T-shaped base portion of the arm portion 22b is disposed at a position where the arm portion 22b is placed on the pair of holding pieces 11d. In a state where the pressing operation is not performed by the user, the arm portion 22b extends from the outer periphery of the circular portion 22a to the side side substantially parallel to the bottom surface of the concave portion 11a of the housing 11 (see FIG. 3). .

  When the movable contact plate 22 is arranged in this way, the center fixed contact 31a is located at a position below the center portion of the circular portion 22a of the movable contact plate 22, as shown in FIGS. Has been placed. The external fixed contact 31b is disposed at a position below the connecting portion between the circular portion 22b and the arm portion 22a.

  As shown in FIG. 3, an insulating sheet 32 is disposed above the movable contact plate 22. The insulating sheet 32 is placed on the movable contact plate 22 so as to cover the entire range except a part of the tip of the arm portion 22b. The insulating sheet 32 serves as a dust-proof material that prevents dust, dust, and the like from entering the contact portion formed by the movable contact plate 22 and the fixed contact 31. Thus, since the insulating sheet 32 functions as a dustproof material, it is possible to prevent a malfunction or malfunction of the apparatus main body due to dust or the like.

  The insulating sheet 32 is attached so as to cover the entire surface of the movable contact plate 22, and is attached and fixed to the flat portion 11b (see FIG. 3). Specifically, it is affixed and fixed to the hatched portion shown in FIG. The flat surface portion 11b is set such that the height from the bottom surface of the concave portion 11a is slightly higher than the height at which the arm portion 22b is placed on the holding piece 11d. As described above, the insulating sheet 32 does not restrict the operation of the movable contact plate 22 because it is stuck and fixed to the flat portion 11b.

  Further, as shown in FIG. 3, a click feeling plate 21 is disposed above the insulating sheet 32. The click feeling plate 21 has a dome shape that slightly bulges upward. A protrusion 21 a that slightly protrudes downward is formed at the center of the dome shape on the back surface of the click feeling plate 21. The protrusion 21a is formed to efficiently bring the central portion of the movable contact plate 22 into contact with the central fixed contact 31a in accordance with a pressing operation by the user.

  The click feeling plate 21 is placed on the holding base 11e as shown in FIG. 3 (see FIG. 4). In the holding base 11e, the height from the bottom surface of the concave portion 11a is set to be higher than the height in which the insulating sheet 32 is bonded and fixed to the flat portion 11b. On the other hand, since the click feeling plate 21 has a dome shape bulging upward, there is a constant gap between the click feeling plate 21 and the insulating sheet 32 when no pressing operation is performed by the user. The space is formed.

  Next, the operation of the switch device 10 having the above configuration will be described with reference to FIGS. The switch device 10 performs a two-stage operation in response to a pressing operation by a user. FIG. 5 shows a cross-sectional view when the first stage pressing operation is accepted in the switch device 10 according to the present embodiment, and FIG. 6 shows a cross-sectional view when the second stage pressing operation is accepted. ing.

  As shown in FIG. 5, in the switch device 10, when the first-stage pressing operation is received from the user, the operation button 12 is pushed downward, and the lower end portion of the leg portion 12 c is the click feeling plate 21. Press down. When pushed down by the leg portion 12c, the lower surface of the click feeling plate 21 comes into contact with the insulating sheet 32, and the movable contact plate 22 in close contact with the lower surface is slightly pushed down.

  As described above, the movable contact plate 22 is placed on the pair of holding pieces 11d at a part of the arm portion 22b. For this reason, when it is pushed down slightly by the click feeling plate 21, not the entire movable contact plate 22, but the connecting portion between the circular portion 22a and the arm portion 22b is lowered. For this reason, when the connection portion comes into contact with the external fixed contact 31b, the movable contact plate 22 and the external fixed contact 31b become conductive, and the switch device 10 responds to the first stage pressing operation from the switch device 10. An output signal is output. In this case, the circular portion 22a of the movable contact plate 22 and the central fixed contact 31a are not in contact.

  The click feeling plate 21 is configured such that the dome-shaped portion is inverted in the vertical direction when the first-stage pressing operation is performed as described above. Thereby, a click feeling is given to the user. By providing this click feeling, the user can recognize that the first-stage pressing operation has been performed appropriately.

  When the second stage pressing operation is received from the user shown in FIG. 5, the operation button 12 is further pushed downward as shown in FIG. 6, and the lower end portion of the leg portion 12c is further pushed down. The click feeling plate 21 is pushed down. When the leg 12c is further pushed down, the lower surface of the click feeling plate 21 further pushes down the movable contact plate 22 via the insulating sheet 32.

  In this case, the circular contact portion 22 of the movable contact plate 22 is pushed down in a state where the connection portion between the circular portion 22a and the arm portion 22b is in contact with the external fixed contact 31b. For this reason, when the central portion of the circular portion 22a comes into contact with the central fixed contact 31a, the movable contact 22, the central fixed contact 31a, and the external fixed contact 31b become conductive, and the switch device 10 is connected to the mounting device. An output signal corresponding to the two-stage pressing operation is output.

  The movable contact plate 22 is configured such that the dome-shaped portion is inverted in the vertical direction when the second-stage pressing operation is performed as described above. Thereby, a click feeling is given to the user. By providing this click feeling, the user can recognize that the pressing operation in the second stage has been appropriately performed.

  As described above, according to the switch device 10 according to the present embodiment, the single movable contact plate 22 is adapted to the two-stage pressing operation, so that the device can be compared with a case where a plurality of movable contact plates are used. Space saving of the main body can be realized. Moreover, since the movable contact plate 22 is held by the holding piece 11d in the vicinity of the end of the arm portion 22b and at a position separated from the bottom surface of the housing 11, the movable contact plate 22 is placed outside the movable contact as in the conventional switch device. Since it is not necessary to provide a spacer or to provide a non-adhesive portion on the pressure-sensitive adhesive sheet, it is possible to prevent an increase in the number of parts and the manufacturing process. As a result, it is possible to reduce the size of the apparatus main body while reducing the cost.

  Further, in the switch device 10 according to the present embodiment, since the click feeling plate 21 is disposed on the opposite side of the fixed contact 31 with the movable contact plate 22 interposed therebetween, when a pressing operation is performed by the user. It is possible to recognize that the pressing operation has been appropriately performed.

  Furthermore, in the switch device 10 according to the present embodiment, the movable contact plate 22 is formed by punching a hoop material. And the arm part 22b of the movable contact plate 22 is formed of the connecting bar at the time of this punching process. As described above, since the arm portion 22b of the movable contact plate 22 is formed by the connecting bars necessary for punching the hoop material, the hoop material can be used efficiently, and the design and The mold structure can be simplified. As a result, the cost required for manufacturing the apparatus main body can be reduced, and the degree of freedom in design can be increased.

  Here, the case where the arm portion 22b of the movable contact plate 22 is formed by a connecting bar is shown, but the configuration of the arm portion 22b is not limited to this, and can be changed as appropriate. For example, the arm portion 22b may be formed by punching together with the circular portion 22a. In the case where the arm portion 22b is manufactured by punching in this way, when the arm portion 22b is formed by a connecting bar, problems that may occur at the cut portion (occurrence of bending or protrusion at the cut portion) are prevented. Therefore, the accuracy in the height direction with respect to the fixed contact 31 can be improved.

  In addition, this invention is not limited to the said embodiment, It can change and implement variously. In the above-described embodiment, the size, shape, and the like illustrated in the accompanying drawings are not limited to this, and can be appropriately changed within a range in which the effect of the present invention is exhibited. In addition, various modifications can be made without departing from the scope of the object of the present invention.

  For example, in the above-described embodiment, as shown in FIG. 3, the operation button 12 is disposed above the click feeling plate 21. However, the operation button 12 is not necessarily required as the configuration of the switch device 10. For example, the pressing operation by the user may be directly received by the click feeling plate 21. Even in such a change, the same effect as the above embodiment can be obtained. In this case, it is preferable as an embodiment to provide some kind of protective film on the click feeling plate 21.

  Moreover, in the said embodiment, as shown in FIG. 4, although shown about the case where the whole surface of the movable contact plate 22 is covered with the insulating sheet 32, about the shape of the insulating sheet 32, it is not limited to this. It can be changed as appropriate. For example, as shown in FIG. 7, the opening 32 a may be formed at a position corresponding to the central portion of the movable contact plate 22. In FIG. 7, for convenience of explanation, the insulating sheet 32 is indicated by hatched portions. In this case, since the click feeling plate 21 and the movable contact plate 22 are in direct contact with each other when the user performs a pressing operation, the feeling imparted to the user according to the pressing operation is deteriorated. Can be prevented.

It is a perspective view which shows the external appearance of the switch apparatus which concerns on embodiment of this invention. It is a perspective view which shows the cross section of the switch apparatus which concerns on the said embodiment. It is an expanded sectional view for demonstrating the internal structure of the switch apparatus which concerns on the said embodiment. It is a top view of the switch device concerning the above-mentioned embodiment. In switch device concerning the above-mentioned embodiment, it is a sectional view at the time of receiving press operation of the 1st step. In switch device concerning the above-mentioned embodiment, it is a sectional view at the time of receiving press operation of the 2nd step. It is a top view of the modification of the switch apparatus concerning the said embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Switch apparatus 11 Housing 11a Recessed part 11b Flat part 11c Slit part 11d Holding piece 11e Holding stand 12 Operation button 13 Cover 21 Click feeling plate 22 Movable contact plate 22a Circular part 22b Arm part 31 Fixed contact 31a Central fixed contact 31b External fixation Contact 32 Insulation sheet

Claims (6)

A housing having a plurality of fixed contacts on the bottom surface, a movable contact plate that is separated from and contacting the plurality of fixed contacts in response to a pressing operation by a user, and disposed on the opposite side of the plurality of fixed contacts across the movable contact plate. A switch device including a click feeling generating member that generates a click feeling in response to a pressing operation of a user,
The movable contact plate is disposed so as to face the first fixed contact, and a main body portion, which extends from the main body portion, and which faces the second fixed contact which is disposed outside the first fixed contact. A first holding portion that holds the movable contact plate in the vicinity of the end of the arm portion at a position spaced from the bottom surface, and the housing is spaced further from the bottom surface than the first holding portion. A second holding portion for holding the click feeling generating member at the position,
When the first pressing operation is received from the user, the click feeling generating member is pressed and reversed with respect to the pressing direction, and the movable contact plate is pressed and the arm portion of the movable contact plate, the second fixed contact, Is in a conductive state, and further receives a second pressing operation to press, the main body portion of the movable contact plate and the first fixed contact come into contact and are in a conductive state.   The movable contact plate further includes an insulating member disposed on the click-feel generating member side, and the housing is further away from the bottom surface than the first holding portion, and closer to the bottom surface than the second holding portion. The switch device according to claim 1, further comprising a third holding portion that holds the insulating member at a close position.   The switch device according to claim 2, wherein the insulating member covers the movable contact plate over at least an outer peripheral edge excluding a part near the end of the arm portion.   The switch device according to any one of claims 1 to 3, wherein the main body portion of the movable contact plate has a dome shape that is bulged and formed on the click feeling generating member side.   The said movable contact plate is formed by the punching process with respect to a hoop material, The arm part of the said movable contact plate is formed by the joining crosspiece at the time of the said punching process, The any one of Claim 1 to 4 characterized by the above-mentioned. The switch device according to 1.   The switch device according to any one of claims 1 to 4, wherein a main body portion and an arm portion of the movable contact plate are formed by punching a hoop material.

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