Push switch

Abstract

The present invention provides a push switch that shortens the stroke of a push operation without miniaturizing a metal contact. The push switch comprises: a housing having a housing space with an upper opening; a fixed contact disposed at the bottom of the housing space of the housing; a movable contact member disposed in the housing space, having a dome shape, and being subjected to a pressing force from above to perform a flipping action, thereby causing the central portion to contact the fixed contact; and a pressing member disposed at a position above the movable contact member, being subjected to a pressing force from an operating body to press the movable contact member directly or via other members, and the pressing member presses a portion of the movable contact member that is further outward than the central portion directly or via other members.

Description

Technical Field

[0001] The invention relates to a push switch. Background Art

[0002] In the following patent document 1, a switch device with lighting is disclosed, which is composed of a metal dome-shaped movable contact and a light source for lighting, a hole is provided on the top of the movable contact, and a through hole is provided on the printed circuit board at a position opposite to the hole, a first fixed contact is located on the outer periphery of the through hole, and the light source is exposed from the through hole, and the light source illuminates the hole of the movable contact.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2002-260479 Summary of the invention

[0006] Problems to be solved by the invention

[0007] In the past, in a switch device configured to make a metal contactor contact a fixed contact by flipping a metal contactor, a technique of pressing the top (central portion) of a metal contactor with a pressing member was proposed. However, in this prior art, in order to shorten the stroke of the pressing operation, the metal contactor needs to be miniaturized. In the case of miniaturizing the metal contactor alone, the distance between the metal contactor and the fixed contact during non-pressing operation is close, so the withstand voltage is reduced, and there is a risk of insulation breakdown.

[0008] Means used to solve problems

[0009] A push switch in one embodiment comprises: a shell having a receiving space with an upper opening; a fixed contact disposed at the bottom of the receiving space of the shell; a movable contact member disposed in the receiving space, having a dome shape, and flipping when receiving a pressing force from above, thereby causing a central portion to contact the fixed contact; and a pressing member disposed at a position above the movable contact member, receiving a pressing force from an operating body and pressing the movable contact member directly or via other members, the pressing member pressing a portion of the movable contact member that is closer to the outside than the central portion directly or via other members.

[0010] Effects of the Invention

[0011] According to one embodiment, the stroke amount of the pressing operation can be shortened without miniaturizing the metal contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a perspective view of the appearance of a push switch according to one embodiment.

[0013] Figure 2 This is an exploded perspective view of a push switch according to an embodiment.

[0014] Figure 3 This is a cross-sectional view of the push switch according to one embodiment, taken along the YZ plane.

[0015] Figure 4 It is a diagram schematically showing the operation of the push switch according to one embodiment.

[0016] Figure 5 This is a diagram showing FS characteristics of a push switch according to an embodiment.

[0017] Figure 6 It is a diagram showing the deformation amount of the metal contact included in the push switch according to one embodiment.

[0018] Figure 7 It is a perspective view of the appearance of a push switch according to a first modification.

[0019] Figure 8 It is an exploded perspective view of the push switch according to the first modification.

[0020] Fig. 9 It is a cross-sectional view of the push switch according to the first modification example taken along the YZ plane.

[0021] Fig.10 It is a perspective view of the appearance of a push switch according to a second modification.

[0022] Fig.11 It is an exploded perspective view of a push switch according to a second modification.

[0023] Fig.12 It is a cross-sectional view of the push switch according to the second modification example taken along the YZ plane.

[0024] Fig.13 It is a perspective view of the appearance of a push switch according to a third modified example.

[0025] Fig.14 It is an exploded perspective view of a push switch according to a third modified example.

[0026] Fig.15 It is a perspective view of the appearance of a push switch according to a fourth modified example.

[0027] Fig.16 It is an exploded perspective view of a push switch according to a fourth modification.

[0028] Fig.17 It is a cross-sectional view of the push switch according to the fourth modification example taken along the YZ plane.

[0029] Description of Reference Numerals

[0030] 100, 100A, 100B, 100C, 100D Push switch

[0031] 110 Housing

[0032] 110A Containment Space

[0033] 111 First fixed contact

[0034] 112 Second fixed contact

[0035] 120 Metal contact

[0036] 121 Central

[0037] 122 Curved edge

[0038] 123 Straight edge

[0039] 124 inclined part

[0040] 130 Pressing parts

[0041] 130A Bottom

[0042] 131 Pressing part

[0043] 140 Cover Sheet

[0044] 150 Spacer

[0045] 160 Spacer

[0046] 160A Bottom

[0047] 161 Pressing part

[0048] 170 Pressing parts

[0049] 170A Bottom

[0050] 170B upper surface

[0051] 171 Pressing part

[0052] 172 Operation Department DETAILED DESCRIPTION

[0053] Hereinafter, an embodiment will be described with reference to the accompanying drawings. In addition, in the following description, for convenience, the Z-axis direction in the drawings is set as the up-down direction. In addition, the Y-axis direction in the drawings is set as the left-right direction. In addition, the X-axis direction in the drawings is set as the front-back direction.

[0054] (Overview of Push Switch 100)

[0055] Figure 1 FIG. 1 is a perspective view of the appearance of a push switch 100 according to an embodiment. Figure 1 As shown in FIG. 1 , the push switch 100 has a generally cuboid shape that is thin in the vertical direction (Z-axis direction). Figure 1 As shown, the push switch 100 accommodates the metal contact 120 in the receiving space 110A of the housing 110. In addition, the push switch 100 covers the upper opening of the receiving space 110A of the housing 110 with a cover sheet 140. A pressing member 130 convexly facing upward (in the positive direction of the Z axis) is provided at the back and center of the cover sheet 140.

[0056] The push switch 100 can be switched between an on state and an off state by a pressing operation toward the bottom (negative direction of the Z axis) of the pressing member 130. Specifically, when the pressing member 130 is not pressed downward, the push switch 100 is in an off state, and the first fixed contact 111 (see FIG. 1 ) provided in the receiving space 110A of the housing 110 is in an off state. Figure 2 ) and the second fixed contact 112 (refer to Figure 2 ) becomes non-conductive.

[0057] On the other hand, the push switch 100 is pressed downward by the pressing member 130, and the metal contact 120 is flipped due to elastic deformation, thereby becoming an on state, and the first fixed contact 111 and the second fixed contact 112 are in a conductive state via the metal contact 120. In addition, when the pressing operation from the operating part 141 is released, the push switch 100 is restored to the original state by the elastic restoring force of the metal contact 120. As a result, the push switch 100 is restored to the off state.

[0058] (Configuration of Push Switch 100)

[0059] Figure 2 FIG. 1 is an exploded perspective view of a push switch 100 according to an embodiment. Figure 2 As shown, the push switch 100 includes a housing 110 , two metal contacts 120 , a push member 130 , and a cover sheet 140 in order from the lower side (negative side of the Z axis) in the figure.

[0060] The housing 110 is a container-like component having a thin cubic shape in the up-down direction (Z-axis direction). When viewed from above, the housing 110 has a rectangular shape with the left-right direction (Y-axis direction) as the long side direction and the front-to-back direction (X-axis direction) as the short side direction. The housing 110 has a receiving space 110A with an upper opening. When viewed from above, the receiving space 110A has a long strip shape with the left-right direction (Y-axis direction) as the long side direction and the front-to-back direction (X-axis direction) as the short side direction. The metal contact 120 is accommodated in the receiving space 110A. The shape of the receiving space 110A is substantially the same as the shape of the metal contact 120. For example, the housing 110 is formed by insert molding using a relatively hard insulating raw material (for example, a hard resin, etc.).

[0061] Two first fixed contacts 111 and two second fixed contacts 112 are provided at the bottom of the receiving space 110A in the housing 110. The two first fixed contacts 111 are provided at both ends in the left-right direction (Y-axis direction) at the bottom of the receiving space 110A. By configuring the metal contact 120 in the receiving space 110A, the two first fixed contacts 111 are respectively in contact with the peripheral edge portion (curved edge portion 122 described later) of the metal contact 120 and are electrically connected to the metal contact 120. The two second fixed contacts 112 are provided at the center of the bottom of the receiving space 110A. When the central portion of the metal contact 120 is deformed into a concave shape, the two second fixed contacts 112 are in contact with the back portion of the central portion of the metal contact 120, thereby being electrically connected to the metal contact 120. As a result, the two second fixed contacts 112 are electrically connected to each of the two first fixed contacts 111 via the metal contact 120. For example, the first fixed contact 111 and the second fixed contact 112 are formed by processing a metal plate, and then embedded in the housing 110 by insert molding.

[0062] The metal contact 120 is an example of a "movable contact member". The metal contact 120 is a dome-shaped member formed of a thin metal plate and convex upward (in the positive direction of the Z axis). The metal contact 120 is accommodated in the accommodation space 110A of the housing 110. The metal contact 120 has a dome shape with a central portion 121 as the top, and the central portion 121 has a circular shape when viewed from above. In addition, the metal contact 120 has an annular inclined portion 124 around the central portion 121.

[0063] The outer shape of the metal contact 120 is that, when viewed from above, it has a pair of curved edges 122 in the left-right direction (Y-axis direction) and a pair of straight edges 123 in the front-back direction (X-axis direction). The curved edge 122 is a portion extending in a curved shape along a circumference having a predetermined radius. The straight edge 123 is a portion extending in a straight line along the left-right direction (Y-axis direction). The metal contact 120 has a circular shape when viewed from above, and the sides of the front-back direction (X-axis direction) are cut in a straight line along the left-right direction (Y-axis direction), thereby forming an outer shape having a pair of curved edges 122 and a pair of straight edges 123. That is, the metal contact 120 has a long strip shape with the left-right direction (Y-axis direction) as the long side direction and the front-back direction (X-axis direction) as the short side direction.

[0064] The metal contact 120 is accommodated in the accommodation space 110A of the housing 110, and each of its pair of curved edges 122 contacts the two first fixed contacts 111 provided at the bottom of the accommodation space 110A, and is electrically connected to the two first fixed contacts 111. After the pressing operation of the operating part 141 is performed, the central part 121 of the metal contact 120 is pressed downward by the pressing component 130. When the prescribed operating load is exceeded, the central part 121 is suddenly elastically deformed (flipped) into a concave shape. As a result, the metal contact 120 contacts the second fixed contact 112 provided at the bottom of the accommodation space 110A through the inner part of the central part 121, and is electrically connected to the second fixed contact 112. When the pressing force from the pressing component 130 is released, the metal contact 120 returns to its original convex shape by elastic force.

[0065] The pressing member 130 is a member that is disposed on the metal contact 120 and is convex upward (in the positive direction of the Z axis). The pressing member 130 is formed using a resin material such as PET. Figure 2 As shown, in this embodiment, the pressing member 130 has a disc shape. The pressing member 130 is bonded to the back and center of the cover sheet 140 at its upper surface by any bonding method (eg, laser welding).

[0066] The cover sheet 140 is a thin sheet-like component disposed on the upper surface of the housing 110. The cover sheet 140 is formed using a resin raw material such as PET. When viewed from above, the cover sheet 140 has a rectangular shape with the left-right direction (Y-axis direction) as the long side direction and the front-back direction (X-axis direction) as the short side direction. That is, when viewed from above, the cover sheet 140 has a shape substantially the same as the upper surface of the housing 110. The cover sheet 140 is bonded to the upper surface of the housing 110 by any bonding method (such as laser welding, etc.) while covering the upper surface of the housing 110. The cover sheet 140 seals the housing space 110A by blocking the upper opening of the housing space 110A of the housing 110. A pressing component 130 convex upward (in the positive direction of the Z axis) is bonded to the back and center of the cover sheet 140.

[0067] Figure 3 FIG. 1 is a cross-sectional view of a push switch 100 according to an embodiment of the present invention taken along a YZ plane. Figure 3 As shown in FIG. 1 , the diameter of the pressing member 130 is larger than the diameter of the central portion 121 of the metal contact 120 and smaller than the diameter of the inclined portion 124 of the metal contact 120. Figure 3 As shown, an annular pressing portion 131 protruding downward (in the negative direction of the Z axis) is provided on the outer peripheral edge of the circular bottom surface 130A of the pressing member 130. The pressing portion 131 contacts the inclined portion 124 of the metal contact 120 which is located outside the central portion 121.

[0068] (Action of Push Switch 100)

[0069] Figure 4 FIG. 1 is a diagram schematically showing the operation of the push switch 100 according to one embodiment. Figure 4 As shown, in the push switch 100 of one embodiment, when the pressing member 130 receives the pressing force from the operating body, the annular pressing portion 131 presses the inclined portion 124, which is the portion of the metal contact 120 that is closer to the outside than the central portion 121. As a result, the metal contact 120 performs a flipping action, as shown in FIG. Figure 4 As shown by the dotted line, the central portion 121 is deformed into a concave shape. As a result, the metal contact 120 contacts the second fixed contact 112 provided at the bottom of the receiving space 110A through the inner portion of the central portion 121, and is electrically connected to the second fixed contact 112. When the pressing force from the pressing member 130 is released, the metal contact 120 returns to its original convex shape by elastic force. Figure 4 As shown, the first fixed contact 111 provided at the bottom of the accommodation space 110A is always in contact with the outer peripheral edge of the metal contact 120 .

[0070] like Figure 4As shown, the amount of movement D2 of the inclined portion 124 of the metal contact 120 in the vertical direction (Z-axis direction) is smaller than the amount of movement D1 of the central portion 121 of the metal contact 120 in the vertical direction (Z-axis direction). Therefore, the push switch 100 of one embodiment adopts a configuration in which the inclined portion 124 of the metal contact 120 is pressed by the annular pressing portion 131 of the pressing member 130, and the stroke amount of the pressing member 130 in the vertical direction (Z-axis direction) can be reduced compared with the configuration in which the central portion 121 of the metal contact 120 is pressed. That is, the push switch 100 of one embodiment can be switched to the on state with a shorter operation stroke amount.

[0071] (Comparative Example)

[0072] Figure 5 FIG. 1 is a diagram showing the FS characteristics of the push switch 100 according to one embodiment. Figure 5 In the graph shown, the vertical axis represents the operating load and the horizontal axis represents the operating stroke. Figure 5 In the graph shown, the solid line represents the FS characteristic of the push switch 100 of one embodiment, and the dotted line represents the FS characteristic of the push switch for comparison. In addition, in this comparative example, as the push switch for comparison, a push switch is used in which the push switch 100 of one embodiment is deformed into a configuration in which a pressing member is used to press the central portion of the metal contact.

[0073] like Figure 5 As shown, the stroke amount of the metal contact of the comparative push switch at the start of the flipping action is "0.06 mm", and the stroke amount of the metal contact at the end of the flipping action is "0.115 mm".

[0074] On the other hand, the stroke amount of the metal contact 120 of the push switch 100 according to one embodiment when the flipping operation starts is “0.04 mm”, and the stroke amount of the metal contact 120 when the flipping operation ends is “0.055 mm”.

[0075] In this way, the push switch 100 of one embodiment presses the inclined portion 124 of the metal contact 120 by the annular pressing portion 131 of the pressing member 130. Thus, the push switch 100 of one embodiment can flip the metal contact 120 with a shorter stroke than that of a comparative push switch, and switch the push switch 100 to the on state. Therefore, according to the push switch 100 of one embodiment, the stroke of the pressing operation can be shortened without miniaturizing the metal contact 120.

[0076] Figure 6FIG. 1 is a diagram showing the deformation amount of the metal contact 120 provided in the push switch 100 according to one embodiment. The push switch 100 according to one embodiment presses the portion of the metal contact 120 that is outside the second fixed contact 112 by the annular pressing portion 131 of the pressing member 130. Figure 7 As shown, for the push switch 100 of one embodiment, when the push member 130 is further pressed downward from the state where the metal contact 120 has been flipped, the portion of the metal contact 120 that is closer to the outside than the second fixed contact 112 can be elastically deformed downward, so that the push member 130 can be further moved downward. That is, the push switch 100 of one embodiment can achieve an overstroke of the push member 130.

[0077] In addition, the push switch 100 of one embodiment can further shorten the stroke of the push operation by further providing the push portion 131 on the outside. However, as the push position of the push portion 131 moves outward, the operation load increases. Therefore, the push switch 100 of one embodiment can set the appropriate push position of the push portion 131 in consideration of the stroke of the push operation and the operation load.

[0078] (First Modification)

[0079] Figure 7 1 is a perspective view of the appearance of a push switch 100A according to a first modification. Figure 8 It is an exploded perspective view of a push switch 100A according to a first modification. Fig. 9 It is a cross-sectional view of a push switch 100A according to a first modification example, taken along the YZ plane.

[0080] The push switch 100A according to the first modification does not include the push portion 131 on the bottom surface 130A of the push member 130. That is, the bottom surface 130A of the push member 130 of the push switch 100A according to the first modification is a flat surface.

[0081] In the push switch 100A of the first modified example, a spacer 150 is provided between the push member 130 and the metal contact 120. The spacer 150 is a dome-shaped member formed of a thin metal plate and convex upward (in the positive direction of the Z axis).

[0082] The outer shape of the spacer 150 is substantially the same as the outer shape of the metal contact 120. The spacer 150 is overlapped and arranged on the upper side of the metal contact 120. However, the thickness of the spacer 150 is greater than the thickness of the metal contact 120. Thus, the spacer 150 has a strength higher than that of the metal contact 120. In addition, the spacer 150 may also have a strength higher than that of the metal contact 120 by being formed of a different raw material from that of the metal contact 120.

[0083] A circular opening 150A is formed in the center of the spacer 150. The diameter of the opening 150A is larger than the diameter of the center portion 121 of the metal contact 120. The lower portion of the inner peripheral edge 150Aa of the opening 150A contacts the inclined portion 124 of the metal contact 120. In addition, the upper portion of the inner peripheral edge 150Aa of the opening 150A contacts the bottom surface 130A of the pressing member 130.

[0084] In push switch 100A of the first modification, when push member 130 receives a pressing force from an operating body, it presses inclined portion 124 , which is a portion of metal contact 120 outside central portion 121 , via annular inner peripheral edge portion 150Aa formed in opening 150A of spacer 150 .

[0085] Thus, the push switch 100A of the first modification can flip the metal contact 120 with a shorter stroke than the conventional push switch to switch the push switch 100A to the on state. Therefore, the push switch 100A of the first modification can shorten the stroke of the push operation without miniaturizing the metal contact 120.

[0086] In particular, the push switch 100A of the first variant is less likely to cause the spacer 150 to be offset relative to the metal contact 120, and can more reliably press the specified position of the inclined portion 124 of the metal contact 120 through the annular inner peripheral edge portion 150Aa formed in the opening portion 150A of the spacer 150.

[0087] (Second Modification)

[0088] Fig.10 1 is a perspective view of the appearance of a push switch 100B according to a second modification. Fig.11 It is an exploded perspective view of a push switch 100B according to a second modification. Fig.12 It is a cross-sectional view of a push switch 100B according to a second modification example taken along the YZ plane.

[0089] The push switch 100B according to the second modification does not include the push portion 131 on the bottom surface 130A of the push member 130. That is, the bottom surface 130A of the push member 130 of the push switch 100B according to the second modification is a flat surface.

[0090] In addition, the metal contact 120 of the push switch 100B of the second modified example has a circular shape when viewed from above. That is, in the push switch 100B of the second modified example, the metal contact 120 is not subjected to so-called trimming. With this change, in the push switch 100B of the second modified example, the receiving space 110A of the housing 110 has a circular shape when viewed from above.

[0091] In addition, the push switch 100B of the second variant is provided with a spacer 160 between the push component 130 and the metal contact 120. The spacer 160 is a horizontal disc-shaped component formed of a metal plate. The diameter of the spacer 160 is the same as the diameter of the metal contact 120. The spacer 160 is overlapped on the upper side of the metal contact 120. However, the thickness of the spacer 160 is greater than the thickness of the metal contact 120. Thus, the spacer 160 has a strength higher than that of the metal contact 120. In addition, the spacer 160 may also have a strength higher than that of the metal contact 120 by being formed of a raw material different from that of the metal contact 120.

[0092] An annular pressing portion 161 protruding downward (in the negative direction of the Z axis) is provided on the bottom surface 160A of the spacer 160. The pressing portion 161 is formed by stamping the spacer 160. The diameter of the pressing portion 161 is larger than the diameter of the central portion 121 of the metal contact 120. Thus, the pressing portion 161 contacts the inclined portion 124, which is a portion of the metal contact 120 that is located outside the central portion 121.

[0093] In push switch 100B of the second modification, when push member 130 receives a push force from an operating body, push portion 161 of spacer 160 pushes inclined portion 124 , which is a portion of metal contact 120 located outside central portion 121 .

[0094] Thus, the push switch 100B of the second modification can flip the metal contact 120 with a shorter stroke than the conventional push switch to switch the push switch 100B to the on state. Therefore, the push switch 100B of the second modification can shorten the stroke of the push operation without miniaturizing the metal contact 120.

[0095] In particular, the movement of the metal contact 120 and the spacer 160 of the push switch 100B of the second modified example in the horizontal direction (X-axis direction and Y-axis direction) is restricted by the inner wall surface of the accommodating space 110A of the housing 110, so that the spacer 160 is not easily offset relative to the metal contact 120. Therefore, the push switch 100B of the second modified example can more reliably press the predetermined position of the inclined portion 124 of the metal contact 120 by the annular pressing portion 161 formed on the spacer 160.

[0096] (Third Modification)

[0097] Fig.13 100C is a perspective view of the appearance of a push switch according to a third modification. Fig.14 It is an exploded perspective view of a push switch 100C according to a third modification.

[0098] The push switch 100C of the third modification is different from the push switch 100B of the second modification in that the push portion 161 of the spacer 160 has a shape in which a portion of the annular shape is cut away (i.e., substantially annular). That is, the spacer 160 of the push switch 100C of the third modification has two arc-shaped push portions 161.

[0099] In push switch 100C of the third modification, when push member 130 receives a push force from an operating body, push portion 161 of spacer 160 pushes inclined portion 124 , which is a portion of metal contact 120 located outside central portion 121 .

[0100] Thus, the push switch 100C of the third modification can flip the metal contact 120 with a shorter stroke than the conventional push switch and switch the push switch 100C to the on state. Therefore, the push switch 100C of the third modification can shorten the stroke of the push operation without miniaturizing the metal contact 120.

[0101] (Fourth Modification)

[0102] Fig.15 1 is a perspective view of the appearance of a push switch 100D according to a fourth modification. Fig.16 It is an exploded perspective view of a push switch 100D according to a fourth modification. Fig.17 It is a cross-sectional view of a push switch 100D according to a fourth modification example, taken along the YZ plane.

[0103] The push switch 100D of the fourth modification includes a push member 170 instead of the push member 130. That is, the push switch 100D of the fourth modification includes the push member 170 between the cover sheet 140 and the metal contact 120. The push member 170 is a horizontal flat plate-shaped member formed of a metal plate.

[0104] The diameter of the pressing member 170 is the same as the diameter of the metal contact 120. The pressing member 170 is overlapped and arranged on the upper side of the metal contact 120. However, the thickness of the pressing member 170 is greater than the thickness of the metal contact 120. Thus, the pressing member 170 has a strength higher than that of the metal contact 120. In addition, the pressing member 170 may also have a strength higher than that of the metal contact 120 by being formed of a different raw material from that of the metal contact 120.

[0105] An annular pressing portion 171 protruding downward (in the negative direction of the Z axis) is provided on the bottom surface 170A of the pressing member 170. The diameter of the pressing portion 171 is larger than the diameter of the central portion 121 of the metal contact 120. Thus, the pressing portion 171 contacts the inclined portion 124, which is a portion of the metal contact 120 that is outside the central portion 121.

[0106] In addition, a dome-shaped operating portion 172 protruding upward (in the positive direction of the Z axis) is provided on the upper surface 170B of the pressing member 170 in the area surrounded by the pressing portion 171 (i.e., the central portion of the pressing member 170). The operating portion 172 and the pressing portion 171 are formed integrally with the pressing member 170 by stamping the pressing member 170.

[0107] In the push switch 100D of the fourth modification, when the push member 170 receives the pressing force from the operating body, the push portion 171 of the push member 170 pushes the inclined portion 124 , which is the portion of the metal contact 120 located outside the central portion 121 .

[0108] Thus, the push switch 100D of the fourth modification can flip the metal contact 120 with a shorter stroke than the conventional push switch and switch the push switch 100D to the on state. Therefore, the push switch 100D of the fourth modification can shorten the stroke of the push operation without miniaturizing the metal contact 120.

[0109] In particular, in the push switch 100D of the fourth modification, the operating portion 172 and the pressing portion 171 are integrally formed on the pressing member 170 , so the number of components can be reduced compared to a configuration in which the operating portion 172 and the pressing portion 171 are provided in separate components.

[0110] As mentioned above, although one embodiment of the present invention has been described in detail, the present invention is not limited to these embodiments, and various modifications and changes can be made within the scope of the gist of the present invention described in the claims.

[0111] For example, the pressing portion is not limited to an annular shape. The pressing portion can be any shape as long as it at least presses the portion of the movable contact member that is closer to the outside than the central portion. For example, the pressing portion can also be a member having a shape in which a portion of the annular shape is cut away (i.e., a substantially annular shape).

[0112] In addition, for example, the metal contact 120 may be a member that is not trimmed (that is, a member that does not have a pair of linear edges and has a circular shape in a plan view).

Claims

1. A push switch, characterized in that: have: A shell body having a receiving space with an upper opening; A fixed contact point is arranged at the bottom of the receiving space of the housing; A movable contact member is disposed in the receiving space and has a dome shape, and is subjected to a pressing force from above to perform a flipping action, thereby making the central portion contact the fixed contact; The pressing member is disposed above the movable contact member and receives a pressing force from the operating body to press the movable contact member directly or via another member. The pressing member presses a portion of the movable contact member that is located outside the central portion directly or via another member. The push switch further includes a spacer provided between the push member and the movable contact member. The pressing member presses a portion of the movable contact member that is located outside the central portion via the spacer. The spacer has a circular opening at a position overlapping with the center portion of the movable contact member, and presses a portion of the movable contact member outside the center portion through an inner peripheral edge portion of the opening.

2. The push switch according to claim 1, wherein: The spacer has a pressing portion protruding downward on a surface facing the movable contact member, and the pressing portion presses a portion of the movable contact member that is located outside the central portion.

3. The push switch according to claim 1 or 2, characterized in that: The spacer has a strength higher than that of the movable contact member.

4. The push switch according to claim 1 or 2, characterized in that: The pressing member presses a portion of the movable contact member that is located outside the central portion and outside the fixed contact via the spacer.

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