JP3186161U - Seat with click spring and switch device - Google Patents

Abstract

There are provided a seat with a click spring and a switch device capable of improving the operation feeling even when an operation amount is set large.
In a click spring-equipped sheet 1 having a dome-shaped click spring 5 and a sheet 2 on which the click spring 5 is attached to one surface side, by a pressing operation from above the top portion 5a of the click spring 5, The top portion 5a of the click spring 5 can be reversed downward, and the seat 2 has flexibility, and from the position outside the outer peripheral portion 5b of the click spring 5 toward the top portion 5a of the click spring 5 in plan view. A plurality of slits 20 formed in a spiral shape are provided, and a protective sheet 23 that does not stick to the click spring 5 is provided at a position corresponding to the formation range of the plurality of slits 20.
[Selection] Figure 1

Description

  The present invention relates to a click-spring-equipped seat and a switch device that improve the operational feel.

  As a structure of a sheet with a click spring used as an input key switch or the like in various electronic devices such as a mobile phone, a structure in which a dome-shaped click spring is attached to the back side of a flexible film is known. When the top of the click spring (also referred to as a reversing plate) is pressed, the pressed top is reversed, and this reversing operation functions to make the switch contact conductive, and at the same time, the operation feeling associated with the reversing operation ( Click feeling) can be preferable.

  For example, in Patent Document 1, air circulation around the reversing plate at the time of the reversing operation necessary for obtaining a good click feeling when the reversing plate performs a reversing operation can be ensured. However, there has been disclosed a switch that can prevent dust from entering the place where the reversing plate is provided and ensure good operational reliability and contact stability of the reversing plate. The operation amount (stroke) that is the amount of movement in the vertical direction in the reversing operation of the reversing plate is limited by the tension of the cover film. For this reason, when it is desired to increase the operation amount, the operation of the reversing plate cannot be followed, causing a decrease in operation feeling.

  For this reason, in the sheet | seat with a click spring and switch apparatus of patent document 2, the some slit formed so that it might become spiral toward the top part of a click spring was provided.

  12 is an external view showing the click spring-equipped sheet 100 described in Patent Document 2. FIG. 12 (a) is a schematic plan view, FIG. 12 (b) is a schematic front view, and FIG. 12 (c) is FIG. It is the schematic cross section cut | disconnected by the XII-XII line | wire of a). As shown in FIG. 12, the click spring-equipped sheet 100 is formed on the sheet 102 so as to be spiral from the position outside the outer peripheral portion 105 b of the click spring 105 toward the top portion 105 a of the click spring 105 in a plan view. A plurality of slits 120 are provided. According to this aspect, the spiral slit 120 is provided in the operation of pressing the sheet 102 with the click spring 105 attached to the one surface side from above and reversing the top portion 105a of the click spring 105 downward. Thus, since the tension of the stretched sheet 102 can be reduced, the operation feeling can be improved even if the operation amount (stroke) is set large.

Japanese Patent No. 3766768 Utility Model Registration No. 3181914

  However, in order to further increase the operation amount, it is conceivable to increase the position of the top portion 105a without increasing the planar dimension of the dome-shaped click spring 105. However, the slit 120 is used when the top portion 105a of the click spring 105 is reversed. There is a possibility that the click spring 105 is stuck on the sheet 102 at a position corresponding to the formation range of the above and the operational feeling deteriorates.

  The present invention solves the above-described problems, and an object of the present invention is to provide a seat with a click spring and a switch device that can improve the operation feeling even when the operation amount is set large.

  The present invention provides a click spring-attached sheet having a dome-shaped click spring and a sheet on which the click spring is attached to one surface side, and the click spring of the click spring is operated by pressing from the top side of the click spring. The top part can be reversed downward, and the sheet has flexibility and is spirally formed from a position outside the outer peripheral part of the click spring toward the top part of the click spring in a plan view. A plurality of formed slits are provided, and a protective sheet that does not stick to the click spring is provided at a position corresponding to the formation range of the plurality of slits.

  According to this aspect, in the operation of pressing the sheet on which the click spring is attached to the one surface side from above and reversing the top portion of the click spring downward, the outer periphery of the click spring is reversed by the protective sheet. Since it does not sometimes stick to the sheet, the amount of operation can be increased. Since the spiral slit is provided, the tension of the stretched sheet can be reduced, and the outer periphery does not stick to the sheet when the click spring is reversed by the protective sheet. Even if it is set to a large value, the operation feeling can be improved.

  In the seat with a click spring of the present invention, at least one of the plurality of slits is formed on a radial imaginary line centering on the top of the click spring.

  According to this aspect, since the plurality of slits are uniformly arranged, the followability of the sheet with respect to the operation of the click spring is good.

  The sheet with a click spring according to the present invention is characterized in that the protective sheet is arranged at a position overlapping the plurality of slits in plan view.

  According to this aspect, the followability of the sheet to the reversing operation is good due to the portion that does not stick to the click spring, and the operation feel can be improved.

  In the sheet with a click spring according to the present invention, the sheet includes the protective sheet, a cover sheet, and a spacer sheet, and the spacer sheet is disposed on the one surface side, and is provided with an accommodating portion that accommodates the click spring. The click spring is arranged at a substantially center of the housing portion so that the outer peripheral portion is located inside the inner wall of the housing portion and the top portion is attached to the cover sheet in a plan view. The plurality of slits are formed in the cover sheet from the position of the inner wall of the housing portion toward the inside in a plan view.

  According to this aspect, the amount of movement in the reversing operation of the top portion of the click spring can be set by the shape of the click spring and the thickness of the spacer sheet. Even when the amount of movement is set large, a spiral slit is formed in the cover sheet. Since the tension | tensile_strength of the extended cover sheet can be made small by being provided, the operation feeling can be made favorable.

  In the seat with a click spring of the present invention, there are a plurality of the click springs, and the plurality of slits are formed for each click spring.

  According to this aspect, since it has a plurality of click springs, it can cope with a plurality of operation parts such as a keyboard.

  In the sheet with a click spring of the present invention, there are a plurality of the click springs, and in the plurality of slits corresponding to the click springs arranged in proximity, one of the plurality of slits arranged on the adjacent side is another. It is characterized in that it is formed shorter than.

  According to this aspect, among the plurality of click springs, one of the plurality of slits corresponding to the click springs arranged close to each other is formed shorter than the other. As a result, even in the click spring in the close state, the tension of the extended cover sheet can be reduced by providing a plurality of slits including short slits, so compared with other click spring portions. Therefore, the operation feeling can be hardly reduced.

  The sheet with a click spring of the present invention is characterized in that the sheet has an adhesive layer, and the slit has a width in the short direction of 0.2 mm.

  According to this aspect, since the sheet has the adhesive layer, the top portion of the click spring can be attached via the adhesive layer. Further, since the width of the slit in the short direction is 0.2 mm, it is easy to process the slit with a laser and there is no fear that the adhesive layer is re-welded in the short direction of the slit.

  The switch device according to the present invention includes the above-described seat with a click spring, wherein the click spring serves as a movable contact, and a fixed contact is disposed below a position corresponding to the click spring. .

  According to this aspect, the operation amount can be increased by the click spring-equipped sheet in which the spiral slit is formed, and the switch device having a good operation feeling can be obtained.

  A switch device according to the present invention includes the above-described seat with a click spring, and a switch portion including a fixed contact and a movable contact is disposed below a position corresponding to the click spring.

  According to this aspect, the operation amount can be increased by the click spring-equipped sheet in which the spiral slit is formed, and the switch device having a good operation feeling can be obtained.

  The click spring-equipped sheet of the present invention is configured such that when the click spring is pressed on the one surface side from the upper side and the top portion of the click spring is inverted downward, the protective sheet is used to reverse the click spring. The outer periphery does not stick to the sheet. Since the spiral slit is provided, the tension of the stretched sheet can be reduced, and the outer periphery of the click spring is not stuck to the sheet during the reversing operation by the protective sheet, so the operation amount Even if is set large, the operation feeling can be improved.

  The switch device of the present invention can increase the operation amount and has a good operation feeling by the click spring-equipped sheet in which the spiral slit is formed.

  Therefore, according to the present invention, it is possible to provide a click spring-equipped seat and a switch device that can increase the amount of operation by following the seat while maintaining the operation feeling.

BRIEF DESCRIPTION OF THE DRAWINGS It is an external view which shows the sheet | seat with a click spring of 1st Embodiment of this invention, and a switch apparatus using the same, (a) is a schematic plan view, (b) is a schematic front view, (c) is III of (a). It is the schematic cross section cut | disconnected by the -III line. It is a disassembled perspective view which shows the structure of the switch apparatus of 1st Embodiment. FIG. 3 is a schematic cross-sectional view of the switch device cut along line III-III in FIG. 1, (a) is a schematic cross-sectional view in an initial state, (b) is a schematic cross-sectional view in an operating state, and (c) is It is expansion explanatory drawing of the A section shown to (a). It is an external view which shows the 1st modification of the sheet | seat with a click spring and switch apparatus of 1st Embodiment, (a) is a schematic plan view, (b) is the schematic cross section cut | disconnected by the IV-IV line of (a). is there. It is an external view which shows the 2nd modification of the switch apparatus of 1st Embodiment, (a) is a schematic plan view, (b) is a schematic cross section cut | disconnected by the VV line | wire of (a). It is an external view which shows the sheet | seat with a click spring of 2nd Embodiment of this invention, and a switch apparatus using the same, (a) is a schematic plan view, (b) is a schematic front view. It is a schematic cross section of the switch apparatus cut | disconnected by the VII-VII line of FIG. 6, (a) is sectional drawing of an initial state, (b) is a schematic cross section in an operation state, (c) is ( It is expansion explanatory drawing of the C section shown to a). It is an external view which shows the 1st modification of the sheet | seat with a click spring of 2nd Embodiment, and a switch apparatus using the same, (a) is a schematic plan view, (b) cut | disconnected by the VIII-VIII line of (a). It is a schematic cross section. It is an external view of the sheet | seat with a click spring of 6th Embodiment of this invention, and a switch apparatus using the same, (a) is a schematic plan view, (b) is a schematic cross section cut | disconnected by the IX-IX line of (a). It is. It is a schematic diagram explaining the shape of a slit. It is a schematic diagram explaining the modification of the shape of a slit. It is an external view which shows the conventional sheet | seat with a click spring, (a) is a schematic plan view, (b) is a schematic front view, (c) is a schematic cross section cut | disconnected by the XII-XII line | wire of (a).

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. For easy understanding, the dimensions of the drawings are appropriately changed.

[First Embodiment]
Below, the sheet | seat 1 with a click spring and switch apparatus 30 in 1st Embodiment are demonstrated with reference to FIGS. 1-3 and FIG. 1A and 1B are external views showing a seat 1 with a click spring and a switch device 30 using the same according to the first embodiment. FIG. 1A is a schematic plan view, FIG. 1B is a schematic front view, and FIG. (C) is the schematic cross section cut | disconnected by the III-III line | wire of Fig.1 (a). FIG. 2 is an exploded perspective view showing the configuration of the switch device 30 of the first embodiment. 3 is a schematic cross-sectional view of the switch device 30 cut along the line III-III in FIG. 1, FIG. 3 (a) is a schematic cross-sectional view in an initial state, and FIG. 3 (b) is a schematic view in an operating state. FIG. 3C is an enlarged explanatory view of a portion A shown in FIG. FIG. 10 is a schematic diagram for explaining the shape of the slit 20.

  As shown in FIGS. 1 and 2, the switch device 30 is an assembly of the click spring-equipped sheet 1 having the click spring 5 and the base 3 on which the fixed contact 66 and the contact member 67 are arranged. As shown in FIG. 2, the click spring-attached sheet 1 includes a click spring 5 and a sheet 2 in which a cover sheet 21, a spacer sheet 22, and a protective sheet 23 are laminated.

  The cover sheet 21 is obtained by processing a flexible film material, for example, PET (polyethylene terephthalate). In this embodiment, the thickness is 23 μm. A spiral slit 20 is formed in the cover sheet 21. Such a slit 20 is formed by processing the cover sheet 21 with a laser. For the cover sheet 21, in addition to a transparent film material, for example, a film material mixed with a white pigment and colored in white, or a film material mixed with a black pigment and colored in black can be used. The cover sheet 21 is embossed in advance, and the center portion protrudes upward.

  The spacer sheet 22 is obtained by processing a flexible film material, for example, PET. In this embodiment, the thickness is 75 μm. As shown in FIG. 2, the spacer sheet 22 has an opening for accommodating the click spring 5.

  The protective sheet 23 is obtained by processing a flexible film material, for example, PET. In the present embodiment, the thickness is 12 μm. As shown in FIG. 2, the protective sheet 23 is formed with an opening having a smaller diameter than the opening formed in the spacer sheet 22, and the entire surface excluding the opening is attached to one surface side of the cover sheet 21. Further, one surface side of the protective sheet 23 is attached to the spacer sheet 22 except for a region corresponding to the opening of the spacer sheet 22. The spacer sheet 22 is attached to the cover sheet 21 via the protective sheet 23, and the cover sheet 21 covers the opening of the spacer sheet 22, thereby forming a space for the accommodating portion 4. The protective sheet 23 is embossed in advance, and the periphery of the opening protrudes upward.

  The click spring 5 is formed by processing a stainless steel thin plate into a dome shape. In this embodiment, the height of the dome shape is 1 mm. As shown in FIG. 2, the click spring 5 has a dome shape having a top portion 5a, and an outer peripheral portion 5b thereof includes four leg portions 5c.

  As shown in FIG. 3A, the click spring 5 is accommodated in the central portion of the accommodating portion 4. An adhesive layer 21a is formed on one surface of the cover sheet 21 on the side where the sheet 2 is in contact with the click spring 5, as shown in an enlarged view in FIG. Thereby, as for the sheet | seat 2, the cover sheet 21 is affixed with the protective sheet 23 via the adhesion layer 21a. Further, the sheet 2 is adhered to the top 5 a of the click spring 5 through an adhesive layer 21 a formed on the cover sheet 21. Moreover, the protective sheet 23 is stuck on the spacer sheet 22 via the adhesive layer 23a. Therefore, the protective sheet 23 bulges around the opening in a dome shape following the shape of the click spring 5, and the cover sheet 21 further bulges in a dome shape following the shape of the protective sheet 23 and the click spring 5. .

  As described above, the click spring-equipped sheet 1 includes the click spring 5 and the sheet 2 in which the cover sheet 21, the spacer sheet 22, and the protective sheet 23 are laminated. As shown in FIG. 3C, the opening of the protective sheet 23 and the inner wall 4 a of the accommodating portion 4 are separated by a predetermined dimension, and the adhesive of the cover sheet 21 is attached to the outer peripheral portion 5 b of the click spring 5. The layer 21a is not in contact. The slit 20 is formed at a position overlapping the protective sheet 23 in plan view.

  The base 3 is formed by molding an insulating resin material, for example, phenol resin, and a fixed contact 66 and a contact member 67 made of a conductive metal plate are disposed on the surface of the base 3. Each of the fixed contact 66 and the contact member 67 has a connection portion (not shown) embedded in the base 3, and is provided so as to be connectable to an external wiring while being electrically insulated from each other.

  As shown in FIG. 3A, the contact member 67 is disposed at a position where the contact member 67 contacts the outer peripheral portion 5 b (leg portion 5 c) of the click spring 5 when the sheet 1 with the click spring and the base 3 are assembled. Yes. By attaching the spacer sheet 22 to the base 3 via an adhesive layer (not shown), the contact member 67 and the click spring 5 are electrically connected.

  The fixed contact 66 is disposed below the planar position corresponding to the click spring 5 when the click spring-equipped sheet 1 and the base 3 are assembled. The fixed contact 66 is disposed in a state of being electrically insulated from the contact member 67, and the click spring 5 has a dome shape. Therefore, as shown in FIG. The top 5a of the spring 5 and the fixed contact 66 are not in contact.

  The switch device 30 can invert the top portion 5a of the click spring 5 downward by a pressing operation of pressing the sheet 2 with the click spring 5 serving as a movable contact stuck on one side from the upper side (the other side). It is configured. That is, as shown in FIG. 3B, the top portion 5 a of the click spring 5 is inverted downward by pressing the sheet 2 covering the top portion 5 a of the click spring 5 from above. As a result, the click spring 5 contacts the fixed contact 66, and the fixed contact 66 and the contact member 67 are electrically connected via the click spring 5. At this time, the sheet 2 is deformed as shown in FIG. 3B following the state in which the top 5a of the click spring 5 is inverted downward. When the pressing operation is released, the restoring force of the click spring 5 returns to the initial state shown in FIG. 3A, and the fixed contact 66 and the contact member 67 return to the electrically insulated state.

  Note that the amount of movement of the top portion 5a of the click spring 5 at this time is referred to as the operation amount. In addition, a feeling that the operation load changes nonlinearly with the reversing operation of the top portion 5a of the click spring 5 is referred to as an operation feeling (click feeling).

  When it is desired to increase the operation amount, the height of the dome shape of the click spring 5 is increased so as to increase the amount of movement in the reversing operation of the top portion 5a of the click spring 5. Further, when it is desired to increase the operation amount, it is preferable to attach the click spring 5 after making the cover sheet 21 and the protective sheet 23 dome-shaped by embossing.

  Next, the shape of the slit 20 in the sheet | seat 1 with a click spring of this embodiment and the switch apparatus 30 using the same is demonstrated.

  As shown in FIG. 1, the plurality of slits 20 are formed in a spiral shape from a position outside the outer peripheral portion 5 b (leg portion 5 c) of the click spring 5 toward the top portion 5 a of the click spring 5 in plan view. Yes. As shown in FIG. 10, when a radial imaginary line (straight line) RL centered on the top portion 5 a of the click spring 5 is drawn, the slit 20 is positioned at one end in the longitudinal direction in the vicinity of the inner wall 4 a of the housing portion 4 in plan view. , An elongated opening shape having the center side formed toward the center as the other end in the longitudinal direction. The width of the slit 20 in the short direction is, for example, 0.2 mm. Such a slit 20 is easy to process with a laser.

  As shown in FIG. 10, when a virtual circle C1 at one end in the longitudinal direction of the slit 20 and a virtual circle C2 at the other end are drawn, the radial dimension at which the two virtual circles C1 and C2 are separated from each other is L1. The other end in the longitudinal direction of the slit 20 is positioned above the outer peripheral portion 5b of the click spring 5 in plan view, and has a gap with the click spring 5 as shown in FIG. The opening formed in the spacer sheet 22 is the size of the virtual circle C1. The opening formed in the protective sheet 23 is the size of the virtual circle C2.

  As shown in FIG. 10, the plurality of slits 20 are arranged so that the radial virtual line RL centering on the top portion 5 a of the click spring 5 crosses the slit 20. For this reason, when the sheet 2 expands in a dome shape following the shape of the click spring 5, the cover sheet 21 is extended not in the radial direction but in a spiral direction between the plurality of slits 20. That is, in the range of the radial dimension L1, the cover sheet 21 is more easily extended along the spiral direction. At this time, the tension generated by the extension of the cover sheet 21 acts in a direction to suppress the bulging of the click spring 5, but the tension can be reduced by providing the plurality of slits 20 in a spiral shape. it can. Further, when the top portion 5a of the click spring 5 is inverted downward by a pressing operation of pressing the sheet 2 with the click spring 5 attached to one surface side from the upper side which is the other surface side, Since the tension is small and the slit 20 can be displaced in the width direction, the sheet 2 can be easily deformed following the state in which the top 5a of the click spring 5 is inverted downward. Thus, since the sheet 2 is formed so that the plurality of slits 20 are spiral, the sheet 2 can follow even if the amount of reversal operation of the click spring 5 is increased. Even if the amount is set to be large, the operational feeling of the click spring-loaded sheet 1 is not impaired.

  As described above, in the seat with a click spring 1 of the present embodiment, the seat 2 is directed to the top portion 5a of the click spring 5 from a position outside the outer peripheral portion 5b (leg portion 5c) of the click spring 5 in plan view. A plurality of slits 20 formed in a spiral shape are provided. A protective sheet 23 that does not stick to the click spring 5 is provided at a position corresponding to the formation range of the plurality of slits 20. According to this aspect, the reversing operation of the click spring 5 by the protective sheet 23 is performed in the operation of pressing the sheet 2 with the click spring 5 attached to the one surface side from above and reversing the top portion 5a of the click spring 5 downward. Since the outer peripheral portion 5b sometimes does not stick to the sheet 2, the amount of operation can be increased. By providing the spiral slit 20, the tension of the stretched sheet 2 can be reduced, and the outer peripheral portion 5 b can be stuck to the sheet 2 during the reversing operation of the click spring 5 by the protective sheet 23. Therefore, even if the operation amount is set large, the operation feeling can be improved.

  The switch device 30 of the present embodiment includes the click spring-equipped sheet 1 in which a spiral slit 20 is formed. The click spring 5 is used as a movable contact, and a fixed contact 66 is provided below the position corresponding to the click spring 5. Is arranged. According to this aspect, even if the operation amount is set to be large by the click spring-equipped sheet 1 in which the spiral slit 20 is formed, the switch device 30 can improve the operation feeling. Therefore, the switch device 30 can increase the operation amount and has a good operation feeling.

  In the present embodiment, at least one of the plurality of slits 20 is formed on the radial imaginary line RL centered on the top portion 5 a of the click spring 5. According to this aspect, since the plurality of slits 20 are evenly arranged, the followability to the operation of the click spring 5 is good.

  In the present embodiment, the protective sheet 23 is disposed at a position overlapping the plurality of slits 20 in plan view. According to this aspect, the portion that does not stick to the click spring 5 has good followability to the reversing operation, and the operation feel can be improved.

  In the present embodiment, the spacer sheet 22 is disposed on the one surface side of the cover sheet 21 via the protective sheet 23, and the accommodating portion 4 that accommodates the click spring 5 is provided. The outer peripheral portion 5b (leg portion 5c) is positioned on the inner side of the inner wall 4a of the accommodating portion 4, and the top portion 5a is disposed at the approximate center of the accommodating portion 4 so as to be attached to the cover sheet 21, and has a plurality of slits. 20 is formed in the cover sheet 21 inward from the position of the inner wall 4a of the accommodating part 4 by planar view. According to this aspect, the amount of movement in the reversing operation of the top portion 5 a of the click spring 5 can be set by the shape of the click spring 5. Even when the amount of movement is set large, the tension of the extended cover sheet 21 can be reduced by providing the cover sheet 21 with the spiral slit 20. Furthermore, since the outer peripheral portion 5b does not stick to the sheet 2 during the reversing operation of the click spring 5 by the protective sheet 23, the operation feeling can be improved.

  In the present embodiment, the sheet 2 has an adhesive layer 21 a formed on the cover sheet 21, and the slit 20 has a width in the short direction of 0.2 mm. According to this aspect, since the cover sheet 21 has the adhesive layer 21a formed on the cover sheet 21, the top 5a of the click spring 5 can be attached to the cover sheet 21 via the adhesive layer 21a. Further, since the width of the slit 20 in the short direction is 0.2 mm, it is easy to process with a laser.

  If the sheet is difficult to follow the click spring, for example, in the state of being attached to the click spring, the click spring is different from the click spring-equipped sheet 1 of the present embodiment. The amount of operation will be reduced because the amount of bulging is suppressed. Or the area | region where the click spring and the sheet | seat are affixed will peel, and it will be in the unstable affixed state which repeats affixing and peeling again, and will affect the operation feeling.

  Moreover, the sheet | seat 1 with a click spring of this embodiment is especially effective when it is desired to set a large movement amount in the reversing operation of the top portion 5a of the click spring 5 without increasing the thickness of the spacer sheet 22. In order to increase the dome-shaped height of the click spring 5 without increasing the thickness of the spacer sheet 22, the height at which the cover sheet 21 bulges in a dome shape following the shape of the click spring 5 must be high. . Since the cover sheet 21 is provided with the spiral slit 20, the tension of the stretched sheet 2 is small even if the height of the dome-shaped bulge is increased, so that the bulge amount of the click spring 5 is suppressed. There is no end to it. Therefore, the moving amount in the reversing operation of the top portion 5a of the click spring 5 can be increased without increasing the thickness of the spacer sheet 22 of the click spring 5, and the cover sheet 21 bulges in a dome shape following the shape of the click spring 5. The height to be done can be increased with respect to the surroundings. For this reason, the operation position for the pressing operation from the upper side becomes clearer, the erroneous operation can be reduced, the followability to the reversing operation is good, and the operation feeling can be improved.

(Modification of slit shape)
It is preferable to optimize the number and length of the slits 20 as appropriate according to the planar size of the click spring 5 and the operation amount. Furthermore, the shape of the slit can be variously changed other than that shown in FIG. FIG. 11 is a schematic diagram for explaining a modification of the shape of the slit. FIG. 11A shows a slit 25 formed in a spiral shape with one end located in the vicinity of the inner wall 4a of the accommodating portion 4 in a plan view. Six slits 25 are arranged. FIG. 11B shows a slit 26 formed in a spiral shape from one end side located in the vicinity of the inner wall 4a of the accommodating portion 4 to the other end side located on the center side in a plan view. In addition, ten slits 26 are arranged. FIG. 11C is applicable to the horizontally long click spring 51, and is a combination of the slit 20 formed in a spiral shape with a linear slit 27 along the longitudinal direction of the click spring 51. . In this case, the imaginary line connecting the other ends of the slit 20 has a shape in which two semicircles are connected by a straight line, but the sign of the imaginary circle C2 is maintained. In any modification, it is possible to optimize the length and number of slits so as to achieve the effects described in the present embodiment. When the length of the slit may be short, the virtual circle C2 at the other end shown in FIG. 10 is closer to the inner wall 4a than the protruding position of the leg 5c of the click spring 5 (the circular portion of the click spring 5). The form which is located may be sufficient.

(First modification of the first embodiment)
A first modification of the first embodiment will be described with reference to FIG. FIGS. 4A and 4B are external views showing a click spring-equipped seat 11 and a switch device 31 according to a first modification of the first embodiment, FIG. 4A is a schematic plan view, and FIG. 4B is FIG. It is the schematic cross section cut | disconnected by the VI-VI line. In addition, the member of the same material as the member of 1st Embodiment makes the code | symbol the same, and omits description of each member.

  As shown in FIG. 4, the seat 2 in the first modification has a housing portion 4 in which a plurality of click springs 5 can be arranged in a plane. The sheet with click spring 11 includes a plurality of click springs 5, and a sheet 2 in which a cover sheet 21, a spacer sheet 22, and a protective sheet 23 are laminated. In the switch device 31, the fixed contact 66 and the contact member 67 are arranged at positions corresponding to the click springs 5 on the surface of the base 3 attached to the click spring-attached sheet 11.

  If the pitch at which the plurality of click springs 5 are arranged is a sufficient distance, it is substantially the same as that in which a plurality of the seats with click springs 1 and the switch devices 30 of the first embodiment are arranged. In the present modification, the pitch at which the plurality of click springs 5 are arranged is not constant, and some of the click springs 5 are arranged close to the adjacent click springs 5 as shown in FIG. In the planar position corresponding to the adjacent click spring 5, the cover sheet 21 is characterized in that a slit 28 having a shorter length in the longitudinal direction than the slit 20 is formed.

  In this modification, there are a plurality of click springs 5, and a plurality of slits 20 are formed for each click spring 5. According to this aspect, since the sheet | seat 11 with a click spring and the switch apparatus 31 have the several click spring 5, it can respond to what has several operation parts, such as a keyboard, by one set.

  In this modification, there are a plurality of click springs 5, and in the plurality of slits corresponding to the click springs 5 arranged in proximity, the slits 28 arranged on the adjacent side are formed shorter than the slit 20. . According to this aspect, even in the click spring 5 in the close state, since the plurality of slits including the short slit 28 are provided, the tension of the extended cover sheet 21 can be reduced. Even if 5 is close, the operation feeling can be hardly lowered as compared with other click springs 5. Therefore, the click spring-equipped sheet 11 can improve the operation feeling even when the operation amount is set large. Further, the switch device 31 can increase the operation amount and has a good operation feeling.

(Second modification of the first embodiment)
Hereinafter, a switch device 32 according to a second modification of the first embodiment will be described with reference to FIG. FIGS. 5A and 5B are external views showing a switch device 32 according to a second modification of the first embodiment. FIG. 5A is a schematic plan view, and FIG. 5B is a VV line in FIG. It is the cut | disconnected schematic cross section. In addition, the member of the same material as the member of 1st Embodiment makes the code | symbol the same, and omits description of each member.

  As shown in FIG. 5, the switch device 32 of the present modification includes a case 68 and an operation member 69, the click spring-equipped sheet 1, the base 3 on which the fixed contact 66 and the contact member 67 are disposed, and the case 68. Are disposed. The click spring-equipped sheet 1 includes a click spring 5 and a sheet 2 in which a cover sheet 21, a spacer sheet 22, and a protective sheet 23 are laminated. The operation member 69 protrudes from the opening of the case 68 and has a shape capable of pressing the top 5 a of the click spring 5 through the cover sheet 21. The case 68 may be made of an insulating resin material, and the fixed contact 66 and the contact member 67 may be arranged on the case 68.

  The switch device 32 presses the operation member 69 from above, whereby the top portion 5a of the click spring 5 is inverted downward via the cover sheet 21. As a result, the click spring 5 contacts the fixed contact 66, and the fixed contact 66 and the contact member 67 are electrically connected via the click spring 5.

  In this modification, the switch device 32 includes a case 68 and an operation member 69, includes the click spring-equipped sheet 1 in which the spiral slit 20 is formed, and the click spring 5 serves as a movable contact. A fixed contact 66 is disposed below the corresponding position. According to this aspect, the switch device 30 can increase the amount of operation by the click spring-equipped sheet 1 in which the spiral slit 20 is formed, and further, the outer peripheral portion during the reversing operation of the click spring 5 by the protective sheet 23. Since 5b does not stick to the sheet | seat 2, it has a favorable operation feeling.

  Note that a switch device including a plurality of operation members 69 may be configured in the same manner as the switch device 32 of the present modification. For example, a case in which the click spring-equipped sheet 11 according to the first modification of the first embodiment can be disposed is used to project a plurality of operation members 69 from a plurality of openings, and each operation member 69 causes the cover sheet 21 to be disposed. What is necessary is just to comprise the top part 5a of the click spring 5 via a press. According to this aspect, since the plurality of click springs 5 are provided, it is possible to cope with a plurality of operation parts such as a keyboard in one set.

[Second Embodiment]
Below, the sheet | seat 13 with a click spring and switch apparatus 33 in 2nd Embodiment are demonstrated with reference to FIG.6, FIG.7 and FIG.10. FIGS. 6A and 6B are external views showing the click spring-equipped sheet 13 and the switch device 33 using the same according to the second embodiment. FIG. 6A is a schematic plan view, and FIG. 6B is a schematic front view. 7 is a schematic cross-sectional view of the switch device cut along line VII-VII in FIG. 6, FIG. 7A is a cross-sectional view in an initial state, and FIG. 7B is a schematic cross-sectional view in an operating state. FIG. 7 (c) is an enlarged explanatory view of a portion B shown in FIG. 7 (a). In addition, the member of the same material as the member of 1st Embodiment makes the code | symbol the same, and omits description of each member.

  As shown in FIGS. 6 and 7, the switch device 33 is an assembly of the click spring-equipped sheet 13 having the click spring 5 and the switch portion 60 in which the fixed contact 66 and the movable contact 65 are arranged. As shown in FIG. 7, the click spring-attached sheet 13 includes a click spring 5 and a sheet 2 in which a cover sheet 21, a spacer sheet 22, and a protective sheet 23 are laminated.

  The click spring 5 is processed into a substantially circular outer shape having a dome-shaped bulge portion with a conductive metal plate, for example, phosphor bronze. As shown in FIG. 7A, the click spring 5 has a dome shape having a top portion 5a. The click spring 5 includes four leg portions 5c on the outer peripheral portion 5b. With the outer peripheral portion 5b of the click spring 5 fixed, the top portion 5a of the click spring 5 can be reversed downward by a pressing operation from the upper side of the top portion 5a of the click spring 5.

  The cover sheet 21 is obtained by processing a flexible film material, for example, PET (polyethylene terephthalate). A spiral slit 20 is formed in the cover sheet 21. Such a slit 20 is formed by processing the cover sheet 21 with a laser. For the cover sheet 21, in addition to a transparent film material, for example, a film material mixed with a white pigment and colored in white, or a film material mixed with a black pigment and colored in black can be used. The cover sheet 21 is embossed in advance, and the center portion protrudes upward.

  The spacer sheet 22 is obtained by processing a flexible film material, for example, PET. The spacer sheet 22 has an opening for accommodating the click spring 5.

  The protective sheet 23 is obtained by processing a flexible film material, for example, PET. As shown in FIGS. 6 and 7, the protective sheet 23 has an opening having a smaller diameter than the opening formed in the spacer sheet 22, and the entire surface excluding the opening is attached to one surface side of the cover sheet 21. Further, one surface side of the protective sheet 23 is attached to the spacer sheet 22 except for a region corresponding to the opening of the spacer sheet 22. The spacer sheet 22 is attached to the cover sheet 21 via the protective sheet 23, and the cover sheet 21 covers the opening of the spacer sheet 22, thereby forming a space for the accommodating portion 4. The protective sheet 23 is embossed in advance, and the periphery of the opening protrudes upward.

  As shown in FIG. 7A, the click spring 5 is accommodated in the central portion of the accommodating portion 4. An adhesive layer 21a is formed on one surface of the cover sheet 21 on the side where the sheet 2 comes into contact with the click spring 5, as shown in an enlarged view in FIG. Thereby, as for the sheet | seat 2, the cover sheet 21 is affixed with the protective sheet 23 via the adhesion layer 21a. Further, the sheet 2 is adhered to the top 5 a of the click spring 5 through an adhesive layer 21 a formed on the cover sheet 21. Moreover, the protective sheet 23 is stuck on the spacer sheet 22 via the adhesive layer 23a. Therefore, the protective sheet 23 bulges around the opening in a dome shape following the shape of the click spring 5, and the cover sheet 21 further bulges in a dome shape following the shape of the protective sheet 23 and the click spring 5. .

  As described above, the click spring-equipped sheet 13 includes the click spring 5 and the sheet 2 in which the cover sheet 21, the spacer sheet 22, and the protective sheet 23 are laminated. In addition, as shown in FIG.7 (c), the opening of the protection sheet 23 and the inner wall 4a of the accommodating part 4 are separated only by the predetermined dimension, and the adhesiveness of the cover sheet 21 is attached to the outer peripheral part 5b of the click spring 5. The layer 21a is not in contact. The slit 20 is formed at a position overlapping the protective sheet 23 in plan view.

  The switch unit 60 is an assembly of a membrane sheet 61 on which a movable contact 65 is disposed, a spacer sheet 62, and a base 63 on which a fixed contact 66 is disposed so as to face the movable contact 65.

  The membrane sheet 61 is obtained by processing a film material having insulating properties and flexibility, for example, PET. A conductive pattern is formed on one surface of the membrane sheet 61, and a part of the conductive pattern is a movable contact 65.

  The base 63 is obtained by processing an insulating film material, for example, PET. A conductive pattern is formed on the surface of the base 63 facing the membrane sheet 61, and a part of the conductive pattern serves as a fixed contact 66. As the base 63, a flexible film material can be used similarly to the membrane sheet 61.

  The spacer sheet 62 is obtained by processing a film material, for example, PET. As shown in FIG. 7A, the spacer sheet 62 is disposed on the outer peripheral portion 5b (leg portion 5c) of the click spring 5 via the membrane sheet 61 when the sheet 13 with the click spring and the switch portion 60 are assembled. Are arranged at least at the overlapping positions.

  The movable contact 65 and the fixed contact 66 are arranged below the planar position corresponding to the click spring 5 when the click spring-equipped sheet 13 and the switch portion 60 are assembled. The fixed contact 66 is disposed in a state of being electrically insulated from the movable contact 65, and the click spring 5 has a dome shape. Therefore, as shown in FIG. The top 5a of the spring 5 and the movable contact 65 are not in contact.

  The switch device 33 is configured to be able to invert the top portion 5a of the click spring 5 downward by a pressing operation of pressing the sheet 2 with the click spring 5 attached on one side from the upper side (the other side). Yes. That is, by pressing the sheet 2 covering the top 5a of the click spring 5 from above, the top 5a of the click spring 5 is inverted downward as shown in FIG. 7B. As a result, the click spring 5 comes into contact with the membrane sheet 61 and presses the membrane sheet 61 to electrically connect the movable contact 65 and the fixed contact 66 via the membrane sheet 61. At this time, the seat 2 is deformed as shown in FIG. 7B following the state in which the top 5a of the click spring 5 is inverted downward. When the pressing operation is released, the restoring force of the click spring 5 returns to the initial state shown in FIG. 7A, and the movable contact 65 and the fixed contact 66 return to the electrically insulated state.

  Note that the amount of movement of the top portion 5a of the click spring 5 at this time is referred to as the operation amount. In addition, a feeling that the operation load changes nonlinearly with the reversing operation of the top portion 5a of the click spring 5 is referred to as an operation feeling (click feeling).

  When it is desired to increase the operation amount, the height of the dome shape of the click spring 5 is increased so as to increase the amount of movement in the reversing operation of the top portion 5a of the click spring 5. Further, when it is desired to increase the operation amount, it is preferable to attach the click spring 5 after making the cover sheet 21 and the protective sheet 23 dome-shaped by embossing.

  Next, the shape of the slit 20 in the sheet | seat 13 with a click spring of this embodiment and the switch apparatus 33 using the same is demonstrated.

  As shown in FIG. 6, the plurality of slits 20 are formed in a spiral shape from a position outside the outer peripheral portion 5 b (leg portion 5 c) of the click spring 5 in a plan view toward the top portion 5 a of the click spring 5. Yes. As shown in FIG. 10, when a radial imaginary line (straight line) RL centered on the top portion 5 a of the click spring 5 is drawn, the slit 20 is positioned at one end in the longitudinal direction in the vicinity of the inner wall 4 a of the housing portion 4 in plan view. , An elongated opening shape having the center side formed toward the center as the other end in the longitudinal direction. The width of the slit 20 in the short direction is, for example, 0.2 mm. Such a slit 20 is easy to process with a laser.

  As shown in FIG. 10, when the virtual circle C1 at one end and the virtual circle C2 at the other end are drawn, the radial dimension at which the two virtual circles C1 and C2 are separated from each other is L1. The other end in the longitudinal direction of the slit 20 is positioned above the outer peripheral portion 5b of the click spring 5 in plan view, and has a gap with the click spring 5 as shown in FIG. 7C. The opening formed in the spacer sheet 22 is the size of the virtual circle C1. The opening formed in the protective sheet 23 is the size of the virtual circle C2.

  As shown in FIG. 10, the plurality of slits 20 are arranged so that the radial virtual line RL centering on the top portion 5 a of the click spring 5 crosses the slit 20. For this reason, when the sheet 2 expands in a dome shape following the shape of the click spring 5, the cover sheet 21 is extended not in the radial direction but in a spiral direction between the plurality of slits 20. That is, in the range of the radial dimension L1, the cover sheet 21 is more easily extended along the spiral direction. At this time, the tension generated by the extension of the cover sheet 21 acts in a direction to suppress the bulging of the click spring 5, but the tension can be reduced by providing the plurality of slits 20 in a spiral shape. it can. Further, when the top portion 5a of the click spring 5 is inverted downward by a pressing operation of pressing the sheet 2 with the click spring 5 attached to one surface side from the upper side which is the other surface side, Since the tension is small and the slit 20 can be displaced in the width direction, the sheet 2 can be easily deformed following the state in which the top 5a of the click spring 5 is inverted downward. Thus, since the sheet 2 is formed so that the plurality of slits 20 are spiral, the sheet 2 can follow even if the amount of reversal operation of the click spring 5 is increased. Even if the amount is set large, the operational feeling of the click spring-equipped sheet 13 is not impaired.

  As described above, in the sheet 13 with a click spring of the present embodiment, the sheet 2 is directed to the top part 5a of the click spring 5 from a position outside the outer peripheral part 5b (leg part 5c) of the click spring in plan view. A plurality of slits 20 formed in a spiral shape are provided. According to this aspect, the spiral spring 20 is provided in the operation of pressing the sheet 2 with the click spring 5 attached to the one surface side from above and reversing the top 5a of the click spring 5 downward. Thus, since the tension of the stretched sheet 2 can be reduced, the operation feeling can be improved even if the operation amount is set large.

  The switch device 33 of this embodiment includes a click spring-equipped sheet 13 in which a spiral slit 20 is formed, and includes a fixed contact 66 and a movable contact 65 on the lower side of the position corresponding to the click spring 5. 60 is arranged. According to this aspect, even if the operation amount is set to be large by the click spring-equipped sheet 13 in which the spiral slit 20 is formed, the switch device 33 can improve the operation feeling. Therefore, the switch device 33 can increase the operation amount and has a good operation feeling.

  In the present embodiment, at least one of the plurality of slits 20 is formed on the radial imaginary line RL centered on the top portion 5 a of the click spring 5. According to this aspect, since the plurality of slits 20 are evenly arranged, the followability to the operation of the click spring 5 is good.

  In the present embodiment, the protective sheet 23 is disposed at a position overlapping the plurality of slits 20 in plan view. According to this aspect, the portion that does not stick to the click spring 5 has good followability to the reversing operation, and the operation feel can be improved.

  In the present embodiment, the spacer sheet 22 is disposed on the one surface side of the cover sheet 21, and is provided with an accommodating portion 4 that accommodates the click spring 5. The click spring 5 has an outer peripheral portion 5 b ( The leg portion 5c) is positioned on the inner side of the inner wall 4a of the accommodating portion 4 and the top portion 5a is disposed at substantially the center of the accommodating portion 4 so that the top portion 5a is attached to the cover sheet 21. Further, it is formed inward from the position of the inner wall 4a of the accommodating portion 4 in plan view. According to this aspect, the amount of movement in the reversing operation of the top portion 5 a of the click spring 5 can be set by the shape of the click spring 5. Even when the amount of movement is set large, the tension of the extended cover sheet 21 can be reduced by providing the cover sheet 21 with the spiral slit 20. Furthermore, since the outer peripheral portion 5b does not stick to the sheet 2 during the reversing operation of the click spring 5 by the protective sheet 23, the operation feeling can be improved.

  In the present embodiment, the sheet 2 has an adhesive layer 21 a formed on the cover sheet 21, and the slit 20 has a width in the short direction of 0.2 mm. According to this aspect, since the cover sheet 21 has the adhesive layer 21a formed on the cover sheet 21, the top 5a of the click spring 5 can be attached to the cover sheet 21 via the adhesive layer 21a. Moreover, since the width of the slit 20 in the short direction is 0.2 mm, such a slit 20 can be easily processed by a laser.

  Unlike the sheet 13 with a click spring of the present embodiment, if the sheet is difficult to follow the click spring with a configuration in which no slit is formed, for example, the click spring is not attached to the click spring. The amount of operation is reduced because the bulge amount is suppressed. Or the area | region where the click spring and the sheet | seat are affixed will peel, and it will be in the unstable affixed state which repeats affixing and peeling again, and will affect the operation feeling.

  The sheet with click spring 13 of the present embodiment is particularly effective when it is desired to set a large amount of movement in the reversing operation of the top portion 5a of the click spring 5 without increasing the thickness of the spacer sheet 22. In order to increase the dome-shaped height of the click spring 5 without increasing the thickness of the spacer sheet 22, the height at which the cover sheet 21 bulges in a dome shape following the shape of the click spring 5 must be high. . Since the cover sheet 21 is provided with the spiral slit 20, the tension of the stretched sheet 2 is small even if the height of the dome-shaped bulge is increased, so that the bulge amount of the click spring 5 is suppressed. There is no end to it. Therefore, the moving amount in the reversing operation of the top portion 5a of the click spring 5 can be increased without increasing the thickness of the spacer sheet 22 of the click spring 5, and the cover sheet 21 bulges in a dome shape following the shape of the click spring 5. The height to be done can be increased with respect to the surroundings. For this reason, the operation position for the pressing operation from the upper side becomes clearer, the erroneous operation can be reduced, the followability to the reversing operation is good, and the operation feeling can be improved.

(Modification of slit shape)
It is preferable to optimize the number and length of the slits 20 as appropriate according to the planar size of the click spring 5 and the operation amount. Furthermore, the shape of the slit can be variously changed other than that shown in FIG. FIG. 11 is a schematic diagram for explaining a modification of the shape of the slit. FIG. 11A shows a slit 25 formed in a spiral shape with one end located in the vicinity of the inner wall 4a of the accommodating portion 4 in a plan view. Six slits 25 are arranged. FIG. 11B shows a slit 26 formed in a spiral shape from one end side located in the vicinity of the inner wall 4a of the accommodating portion 4 to the other end side located on the center side in a plan view. In addition, ten slits 26 are arranged. FIG. 11C is applicable to the horizontally long click spring 51, and is a combination of the slit 20 formed in a spiral shape with a linear slit 27 along the longitudinal direction of the click spring 51. . In this case, the imaginary line connecting the other ends of the slit 20 has a shape in which two semicircles are connected by a straight line, but the sign of the imaginary circle C2 is maintained. In any modification, it is possible to optimize the length and number of slits so as to achieve the effects described in the present embodiment. When the length of the slit may be short, the virtual circle C2 at the other end shown in FIG. 10 is closer to the inner wall 4a than the protruding position of the leg 5c of the click spring 5 (the circular portion of the click spring 5). The form which is located may be sufficient.

(First Modification of Second Embodiment)
A first modification of the second embodiment will be described with reference to FIG. 8A and 8B are external views showing the click spring-equipped seat 14 and the switch device 34 according to the first modification of the second embodiment. FIG. 8A is a schematic plan view, and FIG. 8B is FIG. 8A. It is the schematic cross section cut | disconnected by the VIII-VIII line | wire. In addition, the member of the same material as the member of 1st Embodiment and 2nd Embodiment makes the code | symbol the same, and omits description of each member.

  As shown in FIG. 8, the seat 2 in the first modification has a housing portion 4 in which a plurality of click springs 5 can be arranged in a plane. The click spring-equipped sheet 14 includes a plurality of click springs 5, and a sheet 2 in which a cover sheet 21, a spacer sheet 22, and a protective sheet 23 are laminated. In the switch device 34, the fixed contact 66 and the contact member 67 are arranged at positions corresponding to the click springs 5 on the surface of the base 3 attached to the click spring-equipped sheet 14.

  If the pitch at which the plurality of click springs 5 are arranged is a sufficient distance, it is substantially the same as the arrangement of the plurality of click spring-equipped sheets 13 and switch devices 33 of the second embodiment. In the present modification, the pitch at which the plurality of click springs 5 are arranged is not constant, and some of the click springs 5 are arranged close to the adjacent click springs 5 as shown in FIG. In the planar position corresponding to the adjacent click spring 5, the cover sheet 21 is characterized in that a slit 28 having a shorter length in the longitudinal direction than the slit 20 is formed.

  In this modification, there are a plurality of click springs 5, and a plurality of slits 20 are formed for each click spring 5. According to this aspect, since the sheet | seat 14 with a click spring and the switch apparatus 34 have the several click spring 5, it can respond to what has several operation parts, such as a keyboard, by one set.

  In this modification, there are a plurality of click springs 5, and in the plurality of slits corresponding to the click springs 5 arranged in proximity, the slits 28 arranged on the adjacent side are formed shorter than the slit 20. . According to this aspect, even in the click spring 5 in the close state, since the plurality of slits including the short slit 28 are provided, the tension of the extended cover sheet 21 can be reduced. Even if 5 is close, it is possible to hardly reduce the operation feeling as compared with the other click springs 5. Therefore, the click spring-equipped sheet 14 can improve the operation feeling even if the operation amount is set large. Further, the switch device 34 can increase the operation amount and has a good operation feeling.

(Second Modification of Second Embodiment)
Hereinafter, a switch device 35 according to a second modification of the second embodiment will be described with reference to FIG. 9A and 9B are external views showing a switch device 35 according to a second modification of the second embodiment. FIG. 9A is a schematic plan view, and FIG. 9B is a line IX-IX in FIG. It is the cut | disconnected schematic cross section. In addition, the member of the same material as the member of 1st Embodiment and 2nd Embodiment makes the code | symbol the same, and omits description of each member.

  As shown in FIG. 9, the switch device 35 of the present modification includes a case 68 and an operation member 69, and a switch unit 60 in which the click spring-equipped sheet 13, the fixed contact 66, and the movable contact 65 are disposed in the case 68. And assembled. The click spring-attached sheet 13 includes a click spring 5 and a sheet 2 in which a cover sheet 21 and a spacer sheet 22 are laminated. The switch unit 60 is an assembly of a membrane sheet 61 on which a movable contact 65 is disposed, a spacer sheet 62, and a base 63 on which a fixed contact 66 is disposed so as to face the movable contact 65. The operation member 69 protrudes from the opening of the case 68 and has a shape capable of pressing the top 5 a of the click spring 5 through the cover sheet 21. The case 68 may be made of an insulating resin material, and the fixed contact 66 and the movable contact 65 may be arranged on the case 68.

  The switch device 35 presses the operating member 69 from above, whereby the top portion 5a of the click spring 5 is inverted downward via the cover sheet 21. As a result, the click spring 5 comes into contact with the membrane sheet 61 and presses the membrane sheet 61 to electrically connect the movable contact 65 and the fixed contact 66 via the membrane sheet 61.

  The switch device 35 according to the present modification includes a case 68 and an operation member 69, includes a click spring-attached sheet 13 in which a spiral slit 20 is formed, and a fixed contact 66 on a lower side of a position corresponding to the click spring 5. And a movable contact 65 are arranged. According to this aspect, the switch device 35 can increase the amount of operation by the click spring-equipped sheet 13 in which the spiral slit 20 is formed, and further, the outer peripheral portion during the reversing operation of the click spring 5 by the protective sheet 23. Since 5b does not stick to the sheet | seat 2, it has a favorable operation feeling.

  In addition, you may comprise the switch apparatus provided with the several operation member 69 similarly to the switch apparatus 34 of the 1st modification of 2nd Embodiment. For example, a case in which the click spring-equipped sheet 14 according to the first modification of the second embodiment can be disposed is used to project a plurality of operation members 69 from a plurality of openings, and each operation member 69 causes the cover sheet 21 to be disposed. What is necessary is just to comprise the top part 5a of the click spring 5 via a press. According to this aspect, since the plurality of click springs 5 are provided, it is possible to cope with a plurality of operation parts such as a keyboard in one set.

DESCRIPTION OF SYMBOLS 1 Sheet with click spring 2 Sheet 3 Base 4 Storage part 4a Inner wall 5 Click spring 5a Top part 5b Outer part 5c Leg part 11, 13, 14 Sheet with click spring 20 Slit 21 Cover sheet 21a Adhesive layer 22 Spacer sheet 23 Protective sheet 23a Adhesive Layer 25, 26, 27, 28 Slit 30, 31, 32, 33, 34, 35 Switch device 60 Switch part 61 Membrane sheet 62 Spacer sheet 63 Base 65 Movable contact 66 Fixed contact 67 Contact member 68 Case 69 Operation member

Claims (9)

In a sheet with a click spring having a dome-shaped click spring and a sheet having the click spring attached to one side,
By the pressing operation from the upper side of the top part of the click spring, the top part of the click spring can be reversed downward,
The sheet has flexibility, and is provided with a plurality of slits formed so as to be spiraled from a position outside the outer periphery of the click spring toward the top of the click spring in plan view. ,
A sheet with a click spring, wherein a protective sheet that does not stick to the click spring is provided at a position corresponding to the formation range of the plurality of slits.   The sheet with a click spring according to claim 1, wherein at least one of the plurality of slits is formed on a radial imaginary line centering on the top of the click spring.   The sheet with a click spring according to claim 1 or 2, wherein the protective sheet is disposed at a position overlapping the plurality of slits in plan view.   The sheet includes the protective sheet, a cover sheet, and a spacer sheet, the spacer sheet is disposed on the one surface side, and an accommodating portion that accommodates the click spring is provided. In a plan view, the outer peripheral portion is positioned on the inner side of the inner wall of the housing portion, and the top portion is disposed at a substantially center of the housing portion so that the top portion is attached to the cover sheet. The sheet with a click spring according to any one of claims 1 to 3, wherein the cover sheet is formed inward from a position of the inner wall of the housing portion in a plan view.   The sheet with a click spring according to any one of claims 1 to 4, wherein there are a plurality of the click springs, and the plurality of slits are formed for each click spring.   In the plurality of slits corresponding to the click springs that are arranged in the vicinity of a plurality of the click springs, one of the plurality of slits arranged on the adjacent side is formed shorter than the others. The sheet | seat with a click spring of Claim 5 characterized by these.   The sheet with a click spring according to any one of claims 4 to 6, wherein the sheet has an adhesive layer, and the slit has a width in a short side direction of 0.2 mm.   It has a sheet | seat with a click spring in any one of Claim 1 thru | or 7, and while using the said click spring as a movable contact, the fixed contact is arrange | positioned in the downward side of the position corresponding to the said click spring. A switch device characterized by. It has a sheet | seat with a click spring in any one of Claim 1 thru | or 7, The switch part provided with a fixed contact and a movable contact is arrange | positioned below the position corresponding to the said click spring. A switch device characterized.