Button switch

Abstract

A push button switch (1) is provided with: a housing (70) having insulating properties; a fixed contact body (60) fixed to the housing (70); a movable contact body (40) disposed above the fixed contact body (60); and an operation part (21) which is arranged above the movable contact body (40) and receives a pressing operation. The movable contact body (40) has a terminal section (41) that can move in the vertical direction, and the fixed contact body (60) has a pair of first fixed contacts (63) and one or more second fixed contacts (64) disposed between the pair of first fixed contacts (63). Furthermore, when the movable contact body (40) receives a pressing operation on the operation part (21), the terminal part (41) contacts with at least one of the pair of first fixed contacts (63) and then contacts with more than one second fixed contact (64).

Description

Technical Field

[0001] The present disclosure relates to push button switches. Background Art

[0002] Conventionally, as a portable operation button (for example, a power button, etc.), a push button switch using a dome-shaped movable contact and a fixed contact is known (for example, refer to Patent Document 1).

[0003] (Prior art literature)

[0004] (Patent Document)

[0005] Patent Document 1: International Publication No. 2020 / 153181 Summary of the invention

[0006] Problems to be solved by the invention

[0007] However, when the movable contact and the fixed contact are close to each other, arc discharge occurs and an insulator (oxide) is attached to the surface of the contact. When an insulator is attached to the surface of the contact, the contact resistance value may increase and even conduction failure may occur. Therefore, it is desired to suppress the occurrence of arc discharge. However, Patent Document 1 does not disclose a technique for suppressing conduction failure caused by arc discharge.

[0008] Therefore, the present disclosure provides a push button switch capable of suppressing conduction failure due to arc discharge.

[0009] Means for solving problems

[0010] A push button switch according to one embodiment of the present invention comprises: a housing having insulation properties; a fixed contact body fixed to the housing; a movable contact body arranged above the fixed contact body; and an operating portion arranged above the movable contact body and receiving a pressing operation, wherein the movable contact body has a terminal portion movable in an up-down direction, the fixed contact body has a pair of first fixed contacts and one or more second fixed contacts arranged between the pair of first fixed contacts, and when the operating portion receives a pressing operation, the terminal portion of the movable contact body contacts the one or more second fixed contacts after contacting at least one of the pair of first fixed contacts.

[0011] Effects of the Invention

[0012] According to one aspect of the present disclosure, it is possible to realize a push button switch capable of suppressing conduction failure due to arc discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a perspective view showing the appearance of a push button switch according to the embodiment.

[0014] Figure 2 It is an exploded perspective view of the push button switch according to the embodiment.

[0015] Figure 3 It is a perspective view showing only the movable contact body, the fixed contact body, and the case in the push button switch according to the embodiment.

[0016] Figure 4 yes Figure 3 A cross-sectional view of the push button switch according to the embodiment taken along line IV-IV.

[0017] Figure 5A is shown with Figure 3 FIG. 4 is a cross-sectional view of the structure of the push button switch according to the embodiment in the off state, corresponding to the line IV-IV.

[0018] Figure 5B is shown with Figure 3 4 is a cross-sectional view of the structure of the push button switch according to the embodiment in the on state, corresponding to the line IV-IV.

[0019] Fig. 6A It is shown Figure 3 4 is a cross-sectional view of the structure of the push button switch according to the embodiment in the off state, taken along line IV-IV.

[0020] Figure 6B It is shown Figure 3 FIG. 4 is a cross-sectional view of the push button switch according to the embodiment when the terminal portion is in contact with the first fixed contact point, taken along line IV-IV.

[0021] Figure 6C It is shown Figure 3 FIG. 4 is a cross-sectional view of the push button switch according to the embodiment when the terminal portion is in contact with the second fixed contact point, taken along line IV-IV of FIG.

[0022] Fig. 7A is shown with Figure 3 FIG. 4 is a cross-sectional view of a configuration of a push button switch according to a modification of the embodiment in an OFF state, corresponding to line IV-IV.

[0023] Figure 7B is shown with Figure 3 4 is a cross-sectional view of a configuration of a push button switch according to a modification of the embodiment corresponding to line IV-IV when the terminal portion is in contact with the first fixed contact.

[0024] Figure 7C is with Figure 3 4 is a cross-sectional view of a configuration of a push button switch according to a modification of the embodiment corresponding to line IV-IV when the terminal portion is in contact with the second fixed contact. DETAILED DESCRIPTION

[0025] (The process of obtaining this disclosure)

[0026] Before describing the present disclosure, the process of obtaining the present disclosure will be described.

[0027] For example, when a push button switch is used under high voltage or high current, when the movable contact and the fixed contact are close to each other during the on / off action of the switch, arc discharge will occur between the movable contact and the fixed contact, and insulating materials (oxides) will sometimes adhere to the surface of one of the movable contact and the fixed contact. For example, when the movable contact is made of stainless steel (SUS), granular black foreign matter (insulating material) with iron oxide as the main component will adhere to the fixed contact. In addition, when the black foreign matter adheres to the fixed contact, a depression is formed on the side of the movable contact. It can be inferred that the black foreign matter is attached to the fixed contact after the base material (iron) of the movable contact is oxidized.

[0028] It can be inferred that the process until the black foreign matter adheres is that when the movable contact and the fixed contact are close to each other, arc discharge (heat) occurs as the material of the movable contact melts, and the material splashes from the movable contact toward the fixed contact.

[0029] This may cause the contact resistance between the contacts to increase and even cause poor conduction. In addition, the high voltage is, for example, a voltage of about 10 volts (eg, DC 16V), and the high current is, for example, a current of about several amperes.

[0030] Therefore, the inventors of the present application have conducted serious research on a push button switch that can suppress poor conduction caused by arc discharge, and invented the push button switch shown below. Specifically, the invention not only has movable contacts and fixed contacts for conducting confirmation, but also has contacts that attach insulating materials to themselves (contacts that serve as substitutes) when arc discharge occurs.

[0031] Even when the above-mentioned assumption is wrong, the configuration of the push button switch of the present disclosure described below can achieve the effect of suppressing poor conduction due to arc discharge.

[0032] A push button switch according to one embodiment of the present invention comprises: a housing having insulation properties; a fixed contact body fixed to the housing; a movable contact body arranged above the fixed contact body; and an operating portion arranged above the movable contact body and receiving a pressing operation, wherein the movable contact body has a terminal portion movable in an up-down direction, the fixed contact body has a pair of first fixed contacts and one or more second fixed contacts arranged between the pair of first fixed contacts, and when the operating portion receives a pressing operation, the terminal portion of the movable contact body contacts the one or more second fixed contacts after contacting at least one of the pair of first fixed contacts.

[0033] Accordingly, the push button switch can cause arc discharge to occur preferentially between the first fixed contact and the terminal portion among a pair of first fixed contacts and one or more second fixed contacts. In other words, the push button switch can suppress arc discharge from occurring between one or more second fixed contacts and the terminal portion and the insulating material from being attached to the surface of one or more second fixed contacts or a portion of the terminal portion corresponding to the one or more second fixed contacts. Accordingly, the push button switch involved in one embodiment of the present disclosure can suppress poor conduction between one or more second fixed contacts and the terminal portion, thereby suppressing poor conduction caused by arc discharge.

[0034] For example, the first distance between the pair of first fixed contacts and the terminal portion may be smaller than the second distance between the one or more second fixed contacts and the terminal portion, and the movable contact body may have a connecting portion connected to the terminal portion, and when the operating portion is pressed, the connecting portion is deformed and the terminal portion moves downward.

[0035] Thus, the push switch can more reliably move the terminal portion closer to the pair of first fixed contacts by only moving the plate-shaped terminal portion toward the fixed contact body while the plate-shaped terminal portion maintains its original shape. Thus, the push switch can more reliably suppress poor conduction between one or more second fixed contacts and the terminal portion.

[0036] For example, the pair of first fixed contacts and the one or more second fixed contacts may be protrusions protruding from the fixed contact body toward the terminal portion, and a first height of the pair of first fixed contacts may be higher than a second height of the one or more second fixed contacts.

[0037] According to this, the push switch can more reliably make the terminal portion approach the pair of first fixed contacts with a higher height by only moving toward the fixed contact body while the flat terminal portion maintains its original shape. According to this, the push switch can more reliably suppress the occurrence of poor conduction between one or more second fixed contacts and the terminal portion.

[0038] Furthermore, for example, the terminal portion may include a first contact region that contacts the pair of first fixed contacts and a second contact region that contacts the second fixed contact, and the first contact region may be located at a lower position than the second contact region.

[0039] According to this, a push button switch capable of suppressing conduction failure due to arc discharge can be realized by the shape of the movable contact body.

[0040] Furthermore, for example, a protrusion may be formed in the first contact region, and the protrusion may protrude further toward the fixed contact body than the second contact region.

[0041] According to this, by providing the movable contact body with the protruding portion, it is possible to realize a push button switch capable of suppressing conduction failure due to arc discharge.

[0042] Furthermore, for example, an inclined portion may be formed in the first contact region, and the inclined portion may be inclined toward the fixed contact body with respect to the second contact region.

[0043] According to this, by providing the movable contact body with the inclined portion, it is possible to realize a push button switch capable of suppressing conduction failure due to arc discharge.

[0044] Furthermore, for example, the terminal portion may be in contact with the one or more second fixed contacts by elastically deforming after coming into contact with at least one of the pair of first fixed contacts.

[0045] Thus, the terminal portion can more surely contact with the one or more second fixed contacts. Thus, the push button switch can suppress poor conduction between the one or more second fixed contacts and the terminal portion by the shape (eg, height) of the pair of first fixed contacts and the one or more second fixed contacts.

[0046] And for example, the fixed contact body may have one or more third fixed contacts, the one or more third fixed contacts have a different potential from the pair of first fixed contacts and the one or more second fixed contacts, the movable contact body has a frame portion in contact with the one or more third fixed contacts, the connecting portion connects the terminal portion and the frame portion, and in a plan view, the connecting portion, the terminal portion, and the one or more third fixed contacts are arranged in this order.

[0047] According to this, when the terminal portion moves downward, the portion of the frame portion that contacts the third fixed contact is prevented from being deformed due to the movement of the terminal portion, so that the contact between the frame portion and the third fixed contact can be stabilized.

[0048] For example, the push button switch may further include a dome-shaped movable component, wherein the movable component is a component located between the operating portion and the movable contact body, and when the operating portion is pressed, the movable component is elastically deformed as the operating portion moves, and the terminal portion receives stress from the elastically deformed movable component, thereby elastically deforming the connecting portion.

[0049] According to this, the push button switch can provide the operator (user) with a click feeling (operation feeling when performing a pressing operation) through the elastic deformation of the movable member.

[0050] And for example, it may also be that the one or more second fixed contacts have three or more second fixed contacts, the arrangement direction of two of the three or more second fixed contacts is parallel to the arrangement direction of the pair of first fixed contacts, and the arrangement direction of one of the three or more second fixed contacts and the two second fixed contacts intersects with the arrangement direction of the pair of first fixed contacts.

[0051] According to this, even if an insulator is attached to one of the second fixed contacts of the push button switch, conduction (ie, pressing the operating portion) can be detected through the other second fixed contacts. According to this, the reliability of the switch operation is improved by the push button switch.

[0052] Hereinafter, the embodiments will be described in detail with reference to the drawings.

[0053] In addition, the embodiments to be described below are all general or specific examples. The numerical values, shapes, components, configuration positions of components, and the order of connection methods shown in the following embodiments are all examples, and their purpose is not to limit the present disclosure. Moreover, the components of the following embodiments that are not recorded in the independent technical solutions can be described as arbitrary components.

[0054] Furthermore, each figure is a schematic diagram, not a strict illustration. Therefore, for example, the scales of each figure are not necessarily the same. Furthermore, in each figure, substantially the same components are given the same reference numerals, and repeated descriptions are omitted or simplified.

[0055] Furthermore, in this specification, the terms "XX (for example, on the fixed contact body)", "above", and "below" do not refer to the upper direction (vertically above) and the lower direction (vertically below) in the absolute spatial concept, but are used as terms defined based on the relative positional relationship based on the stacking order in the stacking structure. Furthermore, the terms "XX (for example, on the fixed contact body)", "above", and "below" are applicable not only to the case where two components are arranged with a gap between them and there is another component between them, but also to the case where two components are arranged in a state of being in contact.

[0056] In addition, in this specification and the accompanying drawings, the X-axis, Y-axis, and Z-axis represent the three axes of a right-hand three-dimensional orthogonal coordinate system. In the embodiment, the Z-axis direction is used as the moving direction of the operating portion of the push button switch. In addition, a view when the negative direction side of the Z-axis is viewed from the positive direction side of the Z-axis is also recorded as a "plan view".

[0057] Furthermore, in this specification, terms such as "parallel" and "same" that indicate the relationship between elements, terms such as rectangle and circle that indicate the shape of elements, as well as arrangements, numerical values ​​and numerical ranges are not only strict expressions but also indicate substantially equivalent ranges, meaning, for example, that there can be an error of about a few percent (for example, about ten percent).

[0058] Furthermore, in this specification, ordinal numbers such as "1st" and "2nd" are not terms indicating the number or order of components unless otherwise specified, but are used for the purpose of distinguishing components in order to avoid confusion between components of the same type.

[0059] (Implementation Method)

[0060] Below, refer to Figures 1 to 6C The push button switch according to this embodiment will be described.

[0061] [1. Composition of push button switch]

[0062] First, refer to Figures 1 to 4 The configuration of the push button switch according to this embodiment will be described. Figure 1 It is a perspective view showing the appearance of push button switch 1 according to the present embodiment. Figure 2 It is an exploded perspective view showing the push button switch 1 according to the present embodiment.

[0063] like Figure 1 as well as Figure 2As shown, the push button switch 1 includes a metal cover 10, a rubber cover 20, a movable member 30, a movable contact body 40, a diaphragm 50, a fixed contact body 60, and a housing 70. The movable contact body 40 and the fixed contact body 60 constitute a switch contact portion 100 (switch contact structure).

[0064] The push button switch 1 is a device as follows: the operating portion 21 of the rubber cover 20 is pressed downward (in the negative direction of the Z axis) to cause the movable member 30 to be elastically deformed, and the movable contact body 40 is pressed toward the negative direction of the Z axis by the elastically deformed movable member 30, so that the movable contact body 40 and the fixed contact body 60 are connected, thereby the push button switch 1 is turned on and a specified signal is sent (for example, wirelessly) to an external receiving device. The push button switch 1 is, for example, a normally open switch that is turned on only when a pressing operation (pressing operation) is performed. In addition, although the push button switch 1 is used as a switch for a portable electronic device or an electronic device for an automobile, it can also be fixed to a building material or a fixed electronic device (for example, embedded) and the like.

[0065] The metal cover 10 is a plate-shaped metal member covering the flange 23 of the rubber cover 20 and is fixed to the housing 70. When fixed to the housing 70, the metal cover 10 is in contact (eg, surface contact) with the upper surface (surface on the positive Z-axis direction side) of the flange 23.

[0066] The metal cover 10 has a rectangular shape in a plan view, and has a plate-shaped portion 11, a claw portion 12, and a restricting portion 13. The plate-shaped portion 11, the claw portion 12, and the restricting portion 13 are formed integrally.

[0067] The plate-like portion 11 is a flat plate-shaped portion, and is formed with an insertion hole 11 a for inserting the operation portion 21 . The shape of the insertion hole 11 a corresponds to the shape of the operation portion 21 .

[0068] The claw portion 12 is provided to protrude from the ends of the plate-shaped portion 11 on the positive and negative sides of the X-axis toward the housing 70 side (the negative side of the Z-axis) to fix the metal cover 10 to the housing 70. The claw portion 12 fixes the metal cover 10 to the housing 70 by engaging with the protrusion 72 provided on the housing 70 (engagement).

[0069] Furthermore, the claw portion 12 restricts the movement of the rubber cover 20 in the X-axis direction.

[0070] The restricting portion 13 is provided to protrude from the ends of the plate-shaped portion 11 on the positive and negative sides of the Y axis toward the housing 70 to restrict movement of the rubber cover 20 in the Y axis direction.

[0071] In addition, the arrangement positions and numbers of the claw portions 12 and the restricting portions 13 are not particularly limited.

[0072] The rubber cover 20 is a rubber elastic body provided so as to cover the recessed portion 74 of the housing 70. The rubber cover 20 includes an operating portion 21, an intermediate portion 22, and a flange portion 23. The operating portion 21, the intermediate portion 22, and the flange portion 23 are integrally formed. Moreover, among the operating portion 21, the intermediate portion 22, and the flange portion 23, only the operating portion 21 and the intermediate portion 22 are exposed.

[0073] The operating portion 21 is arranged on the movable contact body 40, and has the function of making the movable contact body 40 (specifically, the terminal portion 41) contact or leave the fixed contact body 60 (specifically, the first electrode component 61). The operating portion 21 is configured to be movable in the up and down direction (Z-axis direction), and moves downward (Z-axis negative direction side) by receiving the external force (pressing operation) from the push button switch 1, thereby moving the movable contact body 40 to the fixed contact body 60 side (Z-axis negative direction side) via the movable component 30. The external force is the force applied to the operating portion 21 by the operator (user) of the push button switch 1. The operating portion 21 is in the first position ( Figure 5A Position shown) and position 2 ( Figure 5B The first position is a position where the movable contact body 40 is not in contact with the fixed contact body 60, and the second position is a position where the movable contact body 40 is in contact with the fixed contact body 60. The second position is a position closer to the fixed contact body 60 side (Z-axis negative direction side) than the first position.

[0074] Regarding the operation portion 21, the upper portion thereof is exposed to the outside of the housing 70. In addition, although the operation portion 21 is, for example, cylindrical, the shape is not limited thereto.

[0075] The middle portion 22 is an annular portion for connecting the operation portion 21 and the flange portion 23. The middle portion 22 connects the operation portion 21 and the flange portion 23 without a gap. In the present embodiment, the middle portion 22 is annular. Although the thickness (length in the Z-axis direction) of the middle portion 22 is thinner than the thickness of the operation portion 21 and the thickness of the flange portion 23 (see FIG. Figure 5A Furthermore, the middle portion 22 is formed to be inclined upward from the flange portion 23 toward the operating portion 21.

[0076] The flange portion 23 is an annular portion disposed opposite to the upper surface 73 of the side wall portion 71 of the housing 70, and covers the upper surface 73 of the side wall portion 71. The flange portion 23 is in contact (e.g., surface contact) with the metal cover 10 and the upper surface 73 of the side wall portion 71, respectively. The cross-sectional shape of the flange portion 23 is rectangular. The upper surface of the flange portion 23 (the surface on the positive direction side of the Z axis) and the lower surface of the flange portion 23 (the surface on the negative direction side of the Z axis) are each flat surfaces. This can increase the contact area between the flange portion 23 and the metal cover 10, and the contact area between the flange portion 23 and the upper surface 73 of the side wall portion 71.

[0077] The movable member 30 is a plate-shaped member that is arranged on the movable contact body 40 and has conductivity and elasticity. The movable member 30 moves between the on position where the movable contact body 40 contacts the fixed contact body 60 and the off position where the movable contact body 40 is away from the fixed contact body 60, thereby causing elastic deformation. In the present embodiment, the movable member 30 is dome-shaped and is mounted on the housing 70. The central portion of the movable member 30 moves between the on position and the off position, thereby causing elastic deformation. The movable member 30 has a foot 31, and the foot 31 is mounted in a manner that contacts the upper surface of the reinforcing members 81 and 82 formed on the housing 70. The movable member 30 is in a dome shape that protrudes to the positive direction side of the Z axis when it is off (normally), and becomes a dome shape that protrudes to the negative direction side of the Z axis by the force from the operating portion 21 when it is on (when pressed), thereby causing elastic deformation. This elastic deformation can provide a click feeling (pressing operation feeling) to the user. Also, this elastic deformation causes the movable member 30 and the movable contact body 40 (specifically, the terminal portion 41 ) to come into contact with each other.

[0078] The movable member 30 is, for example, a metal plate such as stainless steel (SUS). The movable member 30 is also called a metal spring. In addition, the movable member 30 only needs to have at least elasticity and may not have conductivity. The movable member 30 may also have insulating properties, for example.

[0079] Movable contact body 40 is disposed on fixed contact body 60, contacts fixed contact body 60 during a pressing operation, and is a conductive electrode (movable electrode). Movable contact body 40 is made of a conductive material, for example, a metal such as SUS.

[0080] Movable contact unit 40 includes terminal portion 41 , connection portion 42 , and frame portion 43 .

[0081] The terminal portion 41 is plate-shaped and can move in the up-down direction. It is a portion that contacts the fixed contacts (first fixed contact 63, second fixed contact 64) formed on the fixed contact body 60 when the operating portion 21 is pressed. Although the terminal portion 41 is long in the X-axis direction, for example, a thin and long rectangle, the shape is not limited to this. The terminal portion 41 can be in the third position ( Figure 4 , Figure 5A or Fig. 6A Position shown) and position 4 ( Figure 5B or Figure 6CThe third position is the position of the terminal portion 41 when the operating portion 21 is in the first position, and the fourth position is the position of the terminal portion 41 when the operating portion 21 is in the second position.

[0082] The connecting portion 42 is an elastic portion that connects the terminal portion 41 and the frame portion 43. The connecting portion 42 is configured to deform when the operating portion 21 is pressed so that the terminal portion 41 moves downward. In the plan view, the connecting portion 42 is arranged on the opposite side of the third fixed contact 69 relative to the terminal portion 41. That is, in the plan view, the connecting portion 42, the terminal portion 41, and the third fixed contact 69 are sequentially arranged in this order. Accordingly, when the terminal portion 41 moves downward, since the portion of the frame portion 43 that contacts the third fixed contact 69 can be suppressed from being strained due to the movement of the terminal portion 41, it is expected that the contact between the frame portion 43 and the third fixed contact 69 will be stabilized.

[0083] The plan view shape of the connection part 42 and the terminal part 41 is, for example, a T-shape. When the operation part 21 is pressed, the connection part 42 moves toward the fixed contact body 60 side (negative direction side of the Z axis) to perform elastic deformation while the terminal part 41 maintains its original shape.

[0084] The frame portion 43 is housed in the recessed portion 74 of the housing 70 and is in contact with the third fixed contact 69 regardless of whether there is a pressing operation on the operating portion 21. In other words, the frame portion 43 is always in contact with the third fixed contact 69. In the present embodiment, although the frame portion 43 is annular, it may be in another shape as long as it can always be in contact with the third fixed contact 69. In a plan view, the frame portion 43 is provided in a manner of surrounding the terminal portion 41 from the outside.

[0085] Diaphragm 50 is an insulating sheet member, and is provided so as to cover movable contact unit 40 in a plan view. Diaphragm 50 is arranged between movable contact unit 40 and movable member 30. Diaphragm 50 is in contact with frame 43, for example, when push switch 1 is assembled. Diaphragm 50 is made of resin or the like.

[0086] The fixed contact body 60 is an electrode (fixed electrode) having conductivity, is fixed to the housing 70, and contacts the movable contact body 40. The fixed contact body 60 contacts the terminal portion 41 when the operation portion 21 is pressed. The fixed contact body 60 is made of a conductive material. The fixed contact body 60 is connected to a circuit substrate (not shown) disposed in the housing 70 (for example, in the recess 74). For example, at least one electronic component such as a power supply circuit, a control circuit, a memory, and a transmission circuit may be mounted on the built-in circuit substrate. The electronic component is an electronic component for transmitting a predetermined signal to the outside.

[0087] The fixed contact body 60 includes a first electrode member 61 and a second electrode member 67 .

[0088] The first electrode member 61 is a portion of the fixed contact body 60 that contacts the terminal portion 41 when the operation portion 21 is pressed, and includes a pair of first fixed contacts 63 and one or more second fixed contacts 64 disposed between the pair of first fixed contacts 63. The pair of first fixed contacts 63 and the one or more second fixed contacts 64 are protrusions that protrude from a flat portion 62 provided on the positive Y-axis direction side of the first electrode member 61 toward the terminal portion 41 side (positive Z-axis direction side).

[0089] The pair of first fixed contacts 63 functions as contacts (substitute contacts) for attaching an insulator to the contacts when an arc discharge occurs. When the operation portion 21 is pressed, the pair of first fixed contacts 63 approaches the terminal portion 41 before the one or more second fixed contacts 64. In the present embodiment, the pair of first fixed contacts 63 is composed of two first fixed contacts 63, but it can also be composed of more than two first fixed contacts 63, and there is no special limitation on the number. Three or more first fixed contacts 63 can also be configured.

[0090] Furthermore, although the plan view shape of the pair of first fixed contacts 63 is, for example, a rectangle, the shape is not limited thereto and may be a circle, a polygon, or the like.

[0091] The one or more second fixed contacts 64 function as backup electrodes for conducting confirmation when the conduction through the first fixed contacts 63 is not smooth. In the present embodiment, the one or more second fixed contacts 64 are composed of three second fixed contacts 64, but there is no particular limitation on the number of second fixed contacts 64, and for example, it can be one or more than four. Furthermore, the one or more second fixed contacts 64 and the pair of first fixed contacts 63 have the same potential.

[0092] Furthermore, although the plan view shape of the one or more second fixed contacts 64 is, for example, a circle, the shape is not limited thereto and may be a rectangle, a polygon, or the like.

[0093] The end of the first electrode member 61 on the negative side of the Y axis is exposed from the housing 70 and functions as an external terminal connected to an external circuit substrate, etc. The external circuit substrate, etc. may also be mounted with at least one electronic component other than the above-mentioned power supply circuit, control circuit, memory, and transmission circuit.

[0094] The first electrode component 61 is, for example, made of an alloy such as phosphor bronze or a metal monomer. Furthermore, the first electrode component 61 may also be formed as one piece. That is, the flat portion 62 and a pair of first fixed contacts 63 and one or more second fixed contacts 64 may also be formed as one piece. Furthermore, at least one pair of first fixed contacts 63 among a pair of first fixed contacts 63 and one or more second fixed contacts 64 may be installed in a manner that allows them to be mounted and disassembled on the flat portion 62. Here, being mountable and disassembled means that the first fixed contact 63 can be mounted on or removed from the flat portion 62 without destroying the first electrode component 61 and the first fixed contact 63. For example, a screw hole may be formed in the flat portion 62, and the first fixed contact 63 having a thread formed thereon is threadedly connected to the screw hole, so that the first fixed contact 63 is installed in a manner that allows it to be mounted and disassembled on the flat portion 62.

[0095] The second electrode member 67 is a portion of the fixed contact body 60 that contacts the frame portion 43 regardless of whether the operating portion 21 is pressed or not, and has a third fixed contact 69. The third fixed contact 69 is a protrusion formed on a flat portion 68 provided on the negative side of the Y-axis of the second electrode member 67. The third fixed contact 69 has a different potential from a pair of first fixed contacts 63 and one or more second fixed contacts 64, and is connected to a power supply (e.g., DC16V). In addition, the third fixed contact 69 is not electrically connected to a pair of first fixed contacts 63 and one or more second fixed contacts 64 when the operating portion 21 is not pressed (initial state). The end of the second electrode member 67 on the positive side of the Y-axis is exposed from the housing 70, and functions as an external terminal connected to an external circuit substrate or the like.

[0096] The second electrode member 67 is made of, for example, an alloy such as phosphor bronze or a metal monomer. The second electrode member 67 is made of, for example, the same material as the first electrode member 61. The second electrode member 67 is formed integrally. That is, the flat portion 68 and the third fixed contact 69 are formed integrally.

[0097] The housing 70 is a frame member with a bottom, and carries the lower part of the operating part 21, the movable part 30, the movable contact body 40, the diaphragm 50, and the fixed contact body 60. The housing 70 has an annular side wall portion 71, and a bottom surface portion that closes an opening (an opening on the negative direction side of the Z axis) of the side wall portion 71. The side wall portion 71 and the bottom surface portion are formed integrally. The side wall portion 71 is set to stand upright from the periphery of the bottom surface portion toward the positive direction side of the Z axis, and forms the inner surface of the recessed portion 74. The recessed portion 74 is circular in a plan view.

[0098] The housing 70 has insulating properties and is formed of resin. Furthermore, the housing 70 may be harder than the rubber cover 20 .

[0099] Protrusions 72 that engage with the claws 12 are provided at four corners of the outer surface of the side wall 71. The arrangement positions and number of the protrusions 72 are not particularly limited.

[0100] Here, further reference Figure 3 as well as Figure 4 The positional relationship between movable contact unit 40 and fixed contact unit 60 in the initial state will be described. Figure 3 It is a perspective view showing only movable contact body 40 , fixed contact body 60 , and housing 70 in push button switch 1 according to the present embodiment. Figure 4 yes Figure 3 4 is a cross-sectional view of the push button switch 1 according to the present embodiment taken along line IV-IV. Figure 4 1 is a cross-sectional view showing the structure of movable contact body 40 , fixed contact body 60 , and housing 70 in an initial state.

[0101] like Figure 3 As shown, a pair of first fixed contacts 63 and one or more second fixed contacts 64 are each arranged at a position overlapping with the terminal portion 41 in a plan view.

[0102] One of the pair of first fixed contacts 63 is arranged closer to the positive direction of the X-axis than each of the one or more second fixed contacts 64, and the other of the pair of first fixed contacts 63 is arranged closer to the negative direction of the X-axis than each of the one or more second fixed contacts 64. In a plan view, the pair of first fixed contacts 63 is arranged, for example, at a position farther from the center of the recess 74 (outside) than the one or more second fixed contacts 64. In addition, the arrangement direction of the pair of first fixed contacts 63 may be parallel to the extension direction of the terminal portion 41.

[0103] One or more second fixed contacts 64 are arranged between a pair of first fixed contacts 63 in the X-axis direction. In a plan view, one or more second fixed contacts 64 are arranged at a position closer to the center of the recess 74 than the pair of first fixed contacts 63 (inside). For example, when three or more second fixed contacts 64 are provided, the arrangement direction of two second fixed contacts 64 among the three or more second fixed contacts 64 is parallel to the arrangement direction of the pair of first fixed contacts 63 (X-axis direction), and the arrangement direction (Y-axis direction) of the other second fixed contact 64 and the two second fixed contacts 64 among the three or more second fixed contacts 64 intersects (for example, is perpendicular to) the arrangement direction of the pair of first fixed contacts 63.

[0104] Furthermore, the third fixed contact 69 is arranged at a position overlapping with the frame portion 43 in a plan view.

[0105] like Figure 4 As shown, the terminal portion 41 is a flat plate-shaped member in the initial state. The cross-sectional shape of the terminal portion 41 in the initial state is rectangular. The terminal portion 41 is arranged to face the flat portion 62. The terminal portion 41 and the flat portion 62 are arranged, for example, in parallel with each other.

[0106] Furthermore, in the initial state, the terminal portion 41 is not in contact with the pair of first fixed contacts 63 and the one second fixed contact 64, and is arranged to be separated by a predetermined interval. For example, in the initial state, the first distance D1 between the pair of first fixed contacts 63 and the terminal portion 41 is smaller than the second distance D2 between the one or more second fixed contacts 64 and the terminal portion 41. The first distance D1 can be any distance that allows arc discharge to occur between one of the pair of first fixed contacts 63 and the terminal portion 41 when the terminal portion 41 moves to the negative direction of the Z axis, and is, for example, a distance that is smaller than the second distance D2 by 0.01 mm or more.

[0107] In the present embodiment, the first height H1 of the pair of first fixed contacts 63 is greater than the second height H2 of the one or more second fixed contacts 64. Although the first height H1 is, for example, about 0.05 mm and the second height H2 is, for example, about 0.04 mm, the heights are not limited thereto. The first height H1 may be, for example, not less than 0.01 mm, and the second height H2 may be, for example, not less than 0.00 mm. The second height H2 being 0.00 mm means that the surface of the flat portion 62 functions as the second fixed contact 64.

[0108] In addition, Figure 4In the description, although the example of the terminal portion 41 being a flat plate is described, the present invention is not limited thereto. For example, in the plan view, a protrusion protruding toward the pair of first fixed contacts 63 may be provided at a position overlapping with the pair of first fixed contacts 63, and the area around the position may be bent toward the pair of first fixed contacts 63. In this case, as long as the relationship of the first distance D1 < the second distance D2 can be maintained, the first height H1 and the second height H2 may be the same height, or the second height H2 may be greater than the first height H1.

[0109] The reinforcing members 81 and 82 are members that abut against the lower end of the leg 31 of the movable member 30. The reinforcing members 81 and 82 are made of metal. Thus, it is possible to suppress the wear caused by the leg 31 of the movable member 30 rubbing against the housing 70 (resin) during the switch operation. In addition, the reinforcing members 81 and 82 are not limited to being made of metal, and may also be made of resin (for example, a resin harder than the housing 70).

[0110] [2. Operation of push button switch]

[0111] Next, refer to FIG. 5A to FIG. 6C The operation of the operating portion 21 of the push button switch 1 constructed as described above when pressed will be described. Figure 5A as well as Figure 5B The cross-sectional structure of the push button switch 1 in the on state and the off state will be described. Figure 5A is shown with Figure 3 FIG. 4 is a cross-sectional view of the structure of the push button switch 1 according to the present embodiment in the off state, corresponding to the IV-IV line. Figure 5B is shown with Figure 3 FIG. 4 is a cross-sectional view of the configuration of the push button switch 1 according to the present embodiment in the on state, corresponding to the IV-IV line.

[0112] like Figure 5A As shown, in the state where the operation portion 21 is not pressed (off state), the operation portion 21, the movable member 30, the terminal portion 41, the pair of first fixed contacts 63, and the one or more second fixed contacts 64 are arranged to be separated from each other.

[0113] like Figure 5BAs shown, when the operating portion 21 is pressed (on state), the operating portion 21, the movable member 30, the diaphragm 50, and the terminal portion 41 are in contact in this order, and the lower surface of the terminal portion 41 is in contact with a pair of first fixed contacts 63 and one or more second fixed contacts 64. As the operating portion 21 is pressed, the movable member 30 is elastically deformed and protrudes toward the negative direction of the Z axis. Due to the elastic deformation of the movable member 30, stress is applied to the terminal portion 41 toward the negative direction of the Z axis, so that the terminal portion 41 is in contact with the pair of first fixed contacts 63 and one or more second fixed contacts 64.

[0114] Next, refer to FIG. 6A to FIG. 6C The operation of movable contact body 40 in push button switch 1 configured as described above will be described. Fig. 6A It is shown Figure 3 4 is a cross-sectional view of the push button switch 1 according to the present embodiment in the OFF state, taken along line IV-IV. Figure 6B It is shown Figure 3 FIG. 4 is a cross-sectional view of the push button switch 1 according to the present embodiment when the terminal portion 41 is in contact with the first fixed contact 63 , taken along line IV-IV. Figure 6C It is shown Figure 3 FIG. 4 is a cross-sectional view of the push button switch 1 according to the present embodiment when the terminal portion 41 is in contact with the second fixed contact 64 , taken along line IV-IV. FIG. 6A to FIG. 6C It is a cross-sectional view showing only movable contact body 40 , fixed contact body 60 , and housing 70 .

[0115] Fig. 6A shows the cross-sectional structure of the initial state, and Figure 4 The same cross-sectional view. Fig. 6A The position of the terminal portion 41 shown is an example of the third position. The terminal portion 41 and the frame portion 43 are arranged on the same straight line, for example.

[0116] Figure 6B The figure shows that the operating part 21 is pressed, causing the movable part 30 to elastically deform and protrude to the negative direction of the Z axis. Due to the elastic deformation, the terminal part 41 moves to the negative direction of the Z axis, and the terminal part 41 contacts (e.g., surface contact) with a pair of first fixed contacts 63. Compared with the one or more second fixed contacts 64, the pair of first fixed contacts 63 contact the terminal part 41 first. In the case where arc discharge occurs, the arc discharge occurs between the pair of first fixed contacts 63 and the portion of the terminal part 41 close to the pair of first fixed contacts 63. In other words, arc discharge does not occur between the one or more second fixed contacts 64 and the terminal part 41.

[0117] In addition, if FIG. 6A to FIG. 6BThe movement of the terminal portion 41 shown is achieved by the terminal portion 41 receiving stress from the elastically deformed movable member 30 and the connection portion 42 elastically deforming toward the pair of first fixed contacts 63. The movable contact body 40 is thus configured such that when the operating portion 21 is pressed, the movable member 30 elastically deforms as the operating portion 21 moves, and the terminal portion 41 receives stress from the elastically deformed movable member 30, thereby elastically deforming the connection portion 42. Figure 6B The position of the terminal portion 41 shown is a position between the third position and the fourth position, and is an example of the fifth position. The terminal portion 41 does not elastically deform when it moves from the third position to the fifth position, for example. The terminal portion 41 moves from the third position to the fifth position, for example, while maintaining a parallel relationship with the flat portion 62. The terminal portion 41 has such rigidity that it does not elastically deform when it moves from the third position to the fifth position due to the stress of the movable member 30, for example. In addition, not elastically deforming means that substantially no elastic deformation occurs.

[0118] In addition, it is not limited to that the pair of first fixed contacts 63 and the terminal portion 41 contact at the same time, and it is also possible that after one first fixed contact 63 contacts the terminal portion 41, the other first fixed contact 63 contacts the terminal portion 41. In this case, arc discharge occurs preferentially between the first fixed contact 63 and the terminal portion 41.

[0119] In addition, although we hope Figure 6B The state shown is that the push button switch 1 is in the on state, but there is also a case where it is in the off state. For example, when an insulating material is attached to the surface of each of the pair of first fixed contacts 63, Figure 6B In the state shown, the disconnected state is sometimes maintained.

[0120] like Figure 6C As shown, in Figure 6BIn the state where the operating portion 21 is further pressed, that is, when the terminal portion 41 receives further stress from the movable member 30 while the pair of first fixed contacts 63 are supported by the terminal portion 41, the terminal portion 41 elastically deforms and protrudes toward the negative direction of the Z axis, whereby the terminal portion 41 contacts (e.g., surface contact) with one or more second fixed contacts 64. The terminal portion 41 is, for example, configured to contact with at least one of the pair of first fixed contacts 63 and then with one or more second fixed contacts 64 through elastic deformation. It can also be considered that the terminal portion 41 contacts with one or more second fixed contacts 64 in the state after elastic deformation. Furthermore, in the state where the terminal portion 41 contacts with one or more second fixed contacts 64, the contact between the terminal portion 41 and the pair of first fixed contacts 63 is also maintained. In the push button switch 1, for example, even if the switch closing formed by the contact of the terminal portion 41 with the pair of first fixed contacts 63 is prevented by the presence of the insulator (oxide), the contact of the terminal portion 41 with the second fixed contact 64 achieves a redundant effect, thereby closing the switch.

[0121] In this way, the push button switch 1 is configured such that the terminal portion 41 contacts at least one of the pair of first fixed contacts 63 and then contacts one or more second fixed contacts 64. It can also be considered that the push button switch 1 is configured such that the terminal portion 41 (the lower surface of the terminal portion 41) contacts the pair of first fixed contacts 63 and one or more second fixed contacts 64 in sequence.

[0122] According to this, the push button switch 1 can suppress arc discharge between the one or more second fixed contacts 64 and the terminal portion 41, and thus can suppress degradation of the one or more second fixed contacts 64 (for example, increase in contact resistance value due to the insulating material attached to the surface). The push button switch 1 can, for example, delay degradation of the one or more second fixed contacts 64. Furthermore, in the case where the pair of first fixed contacts 63 can be attached to and detached from the flat portion 62, the push button switch 1 can further delay degradation of the one or more second fixed contacts 64 by replacing the first fixed contacts 63 with the insulating material attached to the surface.

[0123] (Variation of the embodiment)

[0124] Below, refer to FIG. 7A to FIG. 7C The push button switch according to this modification will be described. In addition, the following description will focus on the differences from the embodiment, and the description of the same or similar contents as the embodiment will be omitted or simplified. Fig. 7A is shown with Figure 3 4 is a cross-sectional view of the structure of the push button switch according to this modification example in the off state, corresponding to the IV-IV line. Fig. 7AThe cross-sectional view in the state (initial state) where the operation portion 21 does not receive a pressing operation is shown.

[0125] The push button switch according to this modification is different from the terminal portion 41 according to the embodiment in the shape of the terminal portion 140. The push button switch according to this modification has a configuration in which the terminal portion 41 in the push button switch 1 according to the embodiment is replaced with the terminal portion 140.

[0126] like Fig. 7A As shown, in a plan view, the terminal portion 140 has a first contact region 141a overlapping with a pair of first fixed contacts 63, and a second contact region 142a overlapping with one or more second fixed contacts 64. At least a portion of the first contact region 141a is located at a position lower than the second contact region 142a (position on the fixed contact body 60 side).

[0127] The first contact region 141a is provided with a protrusion 141 that protrudes further toward the fixed contact body 60 side (Z-axis negative direction side) than the second contact region 142a. The first contact region 141a is a region including the protrusion 141 in the terminal portion 140. The protrusion 141 has a flat surface on the fixed contact body 60 side. For example, the flat surface of the protrusion 141 is located at a position lower than the flat surface of the flat portion 142 on the fixed contact body 60 side (position on the fixed contact body 60 side). The flat surface of the protrusion 141 and the flat surface of the flat portion 142 are parallel surfaces.

[0128] Although the protrusion 141 is manufactured by performing a protrusion process on a flat plate-shaped metal plate, the manufacturing method is not limited thereto.

[0129] The flat portion 142 is formed in the second contact region 142a, and the flat portion 142 is located at a position on the opposite side (Z-axis positive direction side) of the fixed contact body 60 relative to the first contact region 141a. The second contact region 142a is a region including the flat portion 142 in the terminal portion 140. Alternatively, a protrusion that protrudes less toward the fixed contact body 60 than the protrusion 141 may be formed in the second contact region 142a.

[0130] exist Fig. 7A In the illustrated initial state, the distance between the protruding portion 141 and the first fixed contact 63 in the Z-axis direction is smaller than the distance between the flat portion 142 and the second fixed contact 64 in the Z-axis direction.

[0131] Alternatively, an inclined portion (not shown) formed by bending may be formed in the first contact region 141a instead of the protruding portion 141. The inclined portion is bent toward the fixed contact body 60 relative to the second contact region 142a, for example, inclined at a predetermined angle from the end of the flat portion 142 toward the fixed contact body 60. At least a portion of the inclined portion may be curved.

[0132] Next, refer to Figure 7B as well as Figure 7C The operation of movable contact body 40 in the push button switch according to the present modification example having the above-described configuration will be described. Figure 7B is shown with Figure 3 FIG. 4 is a cross-sectional view of the push button switch according to the present modification example corresponding to line IV-IV when the terminal portion 140 is in contact with the first fixed contact 63 . Figure 7C is shown with Figure 3 FIG. 4 is a cross-sectional view of the push button switch according to the present modification example when the terminal portion 140 is in contact with the second fixed contact 64 , corresponding to the IV-IV line.

[0133] Figure 7B The figure shows that the operating part 21 is pressed, causing the movable member 30 to protrude toward the negative direction of the Z axis and undergo elastic deformation, and the terminal part 140 moves toward the negative direction of the Z axis through the elastic deformation, and the protruding part 141 contacts (e.g., surface contact) with the pair of first fixed contacts 63. Compared with the one or more second fixed contacts 64, the pair of first fixed contacts 63 contacts the terminal part 140 first.

[0134] Here, the first contact region 141a is a region of the terminal portion 140 that contacts the pair of first fixed contacts 63. Furthermore, the first contact region 141a is a region that contacts the fixed contact body 60 before the second contact region 142a.

[0135] In addition, if FIG. 7A to FIG. 7B The movement of the terminal portion 140 shown is achieved by the terminal portion 140 (for example, the second contact region 142a) receiving stress from the elastically deformed movable member 30 and the connection portion 42 elastically deforming toward the pair of first fixed contacts 63. In addition, the first contact region 141a may be a region that does not directly receive stress from the elastically deformed movable member 30.

[0136] and, Figure 7B The position of the terminal portion 140 shown is a position between the third position and the fourth position, and is an example of the fifth position. The terminal portion 140 does not elastically deform when moving from the third position to the fifth position, for example.

[0137] Figure 7C It is shown that, from Figure 7BIn the state where the operation portion 21 is further pressed, that is, when the second contact area 142a (flat portion 142) receives further stress from the movable member 30 while the pair of first fixed contacts 63 are supported by the first contact area 141a (protruding portion 141), the terminal portion 140 elastically deforms toward the negative direction of the Z axis, whereby the flat portion 142 contacts (e.g., surface contact) with one or more second fixed contacts 64. The terminal portion 140 contacts with one or more second fixed contacts 64 after contacting the pair of first fixed contacts 63. The second contact area 142a is an area of ​​the terminal portion 140 that contacts with one or more second fixed contacts 64. Furthermore, the second contact area 142a is an area that contacts the fixed contact body 60 later than the first contact area 141a.

[0138] Furthermore, when the flat portion 142 is in contact with one or more second fixed contacts 64 , the contact between the protruding portion 141 and the pair of first fixed contacts 63 is also maintained.

[0139] In this way, the push button switch according to the present modification is configured such that the terminal portion 140 contacts at least one of the pair of first fixed contacts 63 and then contacts one or more second fixed contacts 64 .

[0140] (Other Embodiments)

[0141] Although the push button switch involved in one or more embodiments is described above based on the embodiments, the present disclosure is not limited to the embodiments. Within the scope of the present disclosure, various modifications that can be thought of by a person skilled in the art are implemented in the present embodiment, and the methods of combining the components in different embodiments are all included in the present disclosure.

[0142] For example, in the above-described embodiments, the push button switch is described as having a rectangular shape in plan view. However, the shape in plan view is not limited thereto, and may be circular, polygonal, or the like.

[0143] Furthermore, in the above-mentioned embodiments, although the arc discharge suppression when the first fixed contact 63 contacts the terminal portion 41 or 140 is described, the push button switch of the present disclosure can also be expected to suppress the arc discharge when the first fixed contact 63 and the terminal portion 41 or 140 are separated.

[0144] Furthermore, in the above-described embodiment and the like, an example in which the cover provided on the push button switch is the metal cover 10 has been described, but the present invention is not limited thereto and may be a resin cover or the like.

[0145] Furthermore, the fixed contact body 60 in the above-mentioned embodiment and the like may be buried in the housing 70 .

[0146] In the above embodiment, the rubber cover 20 is described as being composed of three components (operating portion 21, intermediate portion 22, and flange portion 23) having different thicknesses, but the present invention is not limited thereto. The rubber cover 20 may be a sheet-like member such as a rubber sheet.

[0147] Furthermore, in the above-described embodiment, the third fixed contact 69 is described as being connected to the power source, but the present invention is not limited thereto, and a pair of first fixed contacts 63 and one or more second fixed contacts 64 may be connected to the power source.

[0148] Furthermore, when no insulating material is attached to the pair of first fixed contacts 63 in the above-mentioned embodiment, it is also possible to detect whether the operating portion 21 has been pressed by contact between the first fixed contacts 63 and the terminal portion 41 or 140. In other words, the pair of first fixed contacts 63 may also have the function of detecting whether the operating portion 21 has been pressed.

[0149] Furthermore, in the above-mentioned embodiment, an example in which the push button switch includes the rubber cover 20 is described, but the present invention is not limited thereto, and for example, an operating portion formed of a material other than rubber such as resin may be provided.

[0150] (Remark)

[0151] Based on the description of the above embodiments, the following technology is disclosed.

[0152] (Technology 1)

[0153] A push button switch, comprising: a housing having insulation properties; a fixed contact body fixed to the housing; a movable contact body arranged above the fixed contact body; and an operating portion arranged above the movable contact body and receiving a pressing operation, wherein the movable contact body has a terminal portion movable in an up-down direction, the fixed contact body has a pair of first fixed contacts and one or more second fixed contacts arranged between the pair of first fixed contacts, and when the operating portion receives a pressing operation, the movable contact body contacts the one or more second fixed contacts after the terminal portion contacts at least one of the pair of first fixed contacts.

[0154] (Technique 2)

[0155] In the push button switch described in Technology 1, the first distance between the pair of first fixed contacts and the terminal portion is smaller than the second distance between the one or more second fixed contacts and the terminal portion, and the movable contact body has a connecting portion connected to the terminal portion, and when the operating portion is pressed, the connecting portion is deformed and the terminal portion moves downward.

[0156] (Technique 3)

[0157] In the push button switch described in technology 2, the pair of first fixed contacts and the one or more second fixed contacts are protrusions protruding from the fixed contact body toward the terminal portion, and a first height of the pair of first fixed contacts is higher than a second height of the one or more second fixed contacts.

[0158] (Technique 4)

[0159] In the push button switch according to the second technique, the terminal portion includes a first contact region that contacts the pair of first fixed contacts and a second contact region that contacts the second fixed contact, and the first contact region is located lower than the second contact region.

[0160] (Technique 5)

[0161] In the push button switch according to the fourth technique, a protrusion is formed in the first contact region, and the protrusion protrudes further toward the fixed contact body than the second contact region.

[0162] (Technique 6)

[0163] In the push button switch according to the fourth technique, an inclined portion is formed in the first contact region, and the inclined portion is inclined toward the fixed contact body with respect to the second contact region.

[0164] (Technique 7)

[0165] In the push button switch according to any one of techniques 2 to 6, the terminal portion is brought into contact with the one or more second fixed contacts by elastically deforming after coming into contact with at least one of the pair of first fixed contacts.

[0166] (Technology 8)

[0167] In the push button switch described in any one of technologies 2 to 7, the fixed contact body has one or more third fixed contacts, the one or more third fixed contacts have a different potential from the pair of first fixed contacts and the one or more second fixed contacts, the movable contact body has a frame portion in contact with the one or more third fixed contacts, the connecting portion connects the terminal portion and the frame portion, and in a plan view, the connecting portion, the terminal portion, and the one or more third fixed contacts are arranged in this order.

[0168] (Technique 9)

[0169] A push button switch as described in any one of technologies 2 to 8, wherein the push button switch also has a dome-shaped movable component, wherein the movable component is a component located between the operating portion and the movable contact body, and when the operating portion is pressed, the movable component undergoes elastic deformation as the operating portion moves, and the terminal portion receives stress from the elastically deformed movable component, thereby elastically deforming the connecting portion.

[0170] (Technology 10)

[0171] In the push button switch described in any one of technologies 1 to 9, the one or more second fixed contacts have three or more second fixed contacts, the arrangement direction of two of the three or more second fixed contacts is parallel to the arrangement direction of the pair of first fixed contacts, and the arrangement direction of one of the three or more second fixed contacts and the two second fixed contacts intersects with the arrangement direction of the pair of first fixed contacts.

[0172] (Technology 11)

[0173] In the push button switch according to the first aspect, the terminal portion comes into contact with the one or more second fixed contacts by elastically deforming after coming into contact with at least one of the pair of first fixed contacts.

[0174] Industrial Applicability

[0175] The present disclosure is particularly useful for push button switches used at high voltages or high currents.

[0176] Explanation of symbols

[0177] 1 Push button switch

[0178] 10 Metal cover

[0179] 11 plate-shaped part

[0180] 11a Through hole

[0181] 12 claws

[0182] 13 Restriction

[0183] 20 Rubber cover

[0184] 21 Operation Department

[0185] 22 Middle

[0186] 23 Flange

[0187] 30 Moving parts

[0188] 31 Feet

[0189] 40 Movable contact body

[0190] 41, 140 Terminals

[0191] 42 Connection

[0192] 43 Frame

[0193] 50 Diaphragm

[0194] 60 Fixed contact body

[0195] 61 1st electrode component

[0196] 62, 68, 142 flat part

[0197] 63 1st fixed contact

[0198] 64 2nd fixed contact

[0199] 67 Second electrode component

[0200] 69 3rd fixed contact

[0201] 70 Shell

[0202] 71 Side wall

[0203] 72 protrusion

[0204] 73 Upper surface

[0205] 74 recess

[0206] 81, 82 Reinforcement components

[0207] 100 Switch contact part (switch contact structure)

[0208] 141 Protrusion

[0209] 141a 1st contact area

[0210] 142a Second contact area

[0211] D1 1st distance

[0212] D2 2nd distance

[0213] H1 1st Height

[0214] H2 The second height.

Claims

1. A push button switch, The push button switch has: The shell has insulating properties; A fixed contact body fixed to the housing; A movable contact body is arranged above the fixed contact body; and The operating part is arranged above the movable contact body and receives a pressing operation. The movable contact body has a terminal portion that can move in the up-down direction. The fixed contact body has a pair of first fixed contacts and one or more second fixed contacts arranged between the pair of first fixed contacts. When the operating portion is pressed, the terminal portion of the movable contact body contacts at least one of the pair of first fixed contacts and then contacts the one or more second fixed contacts.

2. The push button switch according to claim 1, A first distance between the pair of first fixed contacts and the terminal portion is smaller than a second distance between the one or more second fixed contacts and the terminal portion, The movable contact body has a connection portion connected to the terminal portion, When the operation portion is pressed, the connection portion is deformed and the terminal portion moves downward.

3. The push button switch according to claim 2, The pair of first fixed contacts and the one or more second fixed contacts are protrusions protruding from the fixed contact body toward the terminal portion. A first height of the pair of first fixed contacts is higher than a second height of the one or more second fixed contacts.

4. The push button switch according to claim 2, The terminal portion has a first contact region that contacts the pair of first fixed contacts and a second contact region that contacts the second fixed contact. The first contact region is located at a lower position than the second contact region.

5. The push button switch according to claim 4, A protrusion is formed in the first contact region, and the protrusion protrudes toward the fixed contact body more than the second contact region.

6. The push button switch according to claim 4, The first contact region has an inclined portion formed therein, the inclined portion being inclined toward the fixed contact body with respect to the second contact region.

7. The push button switch according to any one of claims 3 to 6, The terminal portion comes into contact with the one or more second fixed contacts by elastically deforming after coming into contact with at least one of the pair of first fixed contacts.

8. The push button switch according to any one of claims 2 to 6, The fixed contact body has one or more third fixed contacts, and the one or more third fixed contacts have a different potential from the pair of first fixed contacts and the one or more second fixed contacts. The movable contact body has a frame portion that contacts the one or more third fixed contacts. The connecting portion connects the terminal portion and the frame portion. In a plan view, the connection portion, the terminal portion, and the one or more third fixed contacts are arranged in this order.

9. The push button switch according to any one of claims 2 to 6, The push button switch further includes a dome-shaped movable member, the movable member being a member located between the operating portion and the movable contact body. When the operation portion is pressed, the movable member is elastically deformed as the operation portion moves, and the terminal portion receives stress from the elastically deformed movable member, whereby the connection portion is elastically deformed.

10. The push button switch according to any one of claims 1 to 6, The one or more second fixed contacts have three or more second fixed contacts, The arrangement direction of two second fixed contacts among the three or more second fixed contacts is parallel to the arrangement direction of the pair of first fixed contacts, An arrangement direction of one second fixed contact among the three or more second fixed contacts and the two second fixed contacts intersects with an arrangement direction of the pair of first fixed contacts.

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