JP6249483B2 - Push switch - Google Patents

Description

  The present invention relates to a push switch, and more particularly to a push switch in which a sealing sheet is welded to a case.

  In the push switch, a storage space is provided in the case for storing a movable contact or the like. Depending on the intended use, the push switch may be required to seal a storage space provided in the case. In order to seal the storage space, there is a push switch in which the opening of the storage space is covered with a sheet and the sheet and the case are fixed by welding. As such a push switch, a push switch described in Patent Document 1 below is known.

  Hereinafter, the push switch described in Patent Document 1 will be described with reference to FIG. FIG. 7 is a perspective view showing an appearance of the push switch 900 described in Patent Document 1. FIG.

  The push switch 900 described in Patent Document 1 is a push switch configured by covering a case 911 provided with a switch contact portion with a protective sheet 915, and the protective sheet 915 is welded to the case 911 by laser irradiation. It is configured to be fixed and welded and fixed at a partially linear first welding and fixing portion 921 within a range where the welding and fixing portion corresponds to the adhesive allowance of the protective sheet 915.

JP2013-58380A

  In the push switch 900 described in Patent Document 1, the protective sheet 915 is welded and fixed to the case 911 at the linear first welding and fixing portion 921, and the storage space provided in the case 911 is sealed. However, in the push switch 900, since the first welding and fixing portion 921 is linearly provided, the outer edge portion of the protective sheet 915 is not welded to the case 911. The outer edge portion of the protective sheet 915 that is not welded is turned up by heating such as soldering, and the turned-up outer edge portion comes into contact with the operation knob for operating the push switch 900, resulting in poor operation feeling. There was a fear.

  This invention solves the subject mentioned above and provides the push switch to which the outer edge part did not turn up easily and the cover sheet | seat was welded.

In the push switch according to claim 1, an upper side is an opening, a fixed contact portion is provided therein, and a case including a housing portion for housing a movable contact member is welded so as to cover the opening. In the push switch having a cover sheet attached to the upper surface of the case, the upper surface of the case is a welded portion to be welded to the cover sheet, and the entire area around the opening An entire circumference welded portion welded over the circumference and an outer edge welded portion welded at least partially to the outer edge portion of the cover sheet are formed between the cover sheet and the welded portion of the case. , wherein the cover sheet is attached et is the top surface of the case, between the cover sheet and the welded portion of the casing has welding layer is formed by welding, before Welding layer of the outer edge welded portion, wherein is formed to be thinner than the welding layer of the entire circumference welded part, it has the feature that.

The push switch according to claim 2 , wherein an inner edge welded portion is formed between the cover sheet and the welded portion of the case. The inner edge welded portion is welded to the edge of the opening.

The push switch according to claim 3 is characterized in that the weld layer of the inner edge welded portion is formed thinner than the weld layer of the circumferential weld portion.

5. The push switch according to claim 4 , wherein the case has a protruding portion protruding from an inner side surface of the housing portion, and the protruding portion follows an outer shape when the movable contact member is viewed from above. And is formed continuously from the inner bottom surface of the housing portion to the edge of the opening, and the upper surface of the protrusion portion is the welded portion and is welded to the cover sheet. Have

In the push switch according to claim 5, when the case and the cover sheet are viewed from above, the outer shape of the cover sheet is formed so as to follow the outer shape of the case, and The cover sheet is formed in a shape that fits inside the outer shape, and has a feature that at least a part of the case and the cover sheet is adhered with an adhesive material at a position facing the opening of the cover sheet.

The push switch according to claim 6 , further comprising a pusher member disposed between the cover sheet and the movable contact member, wherein the cover sheet and the pusher member are welded together. Have

According to the first aspect of the present invention, the cover sheet is attached to the case by being welded over the entire circumference of the opening and at least partially welded to the outer edge of the cover sheet. As described above, the cover sheet is welded to at least a part of the outer edge portion of the cover sheet, whereby the outer edge portion of the cover sheet can be prevented from turning up. Therefore, it is possible to provide a push switch in which the outer edge portion is not easily turned up and the sheet is welded. Further, by thinning the welded layer at the outer edge welded portion, it is possible to reduce the thermal energy applied to the outer edge welded portion at the time of welding. Therefore, it is possible to suppress the occurrence of sagging in the outer shape of the case due to excessive heat energy. Therefore, there is an effect that it is possible to provide a push switch in which the outer edge portion of the cover sheet is not easily turned up and the outer shape portion of the case is free from sagging.

According to the invention of claim 2 , the cover sheet is difficult to twist during operation by welding up to the edge of the opening. By making the cover sheet difficult, it is possible to suppress the deterioration of the operation feeling.

According to invention of Claim 3 , the heat energy concerning an inner edge welding part at the time of welding can be restrained small by making the welding layer of the inner edge welding part thin. Therefore, it is possible to suppress the occurrence of sagging at the edge of the opening due to excessive thermal energy. Therefore, it is possible to suppress the deterioration of the operational feeling, the malfunction of the movable contact member, the poor contact between the movable contact member and the fixed contact member, etc. Therefore, there is an effect that it is possible to provide a push switch that has a good operation feeling and is less likely to cause problems.

According to the invention of claim 6 , by forming the projecting portion so as to follow the outer shape of the movable contact member, the movable contact member is arranged along the projecting portion at the time of assembly, so that assembly is facilitated. Further, by providing the protruding portion up to the position of the edge of the opening, the upper surface of the protruding portion can be used as a welded portion, and the sealing performance can be improved by increasing the welding area. Therefore, there is an effect that it is possible to provide a push switch that is easy to assemble and has a good sealing property of the housing portion.

According to the fifth aspect of the present invention, the cover sheet can be temporarily fixed before welding by adhering the cover sheet to the case with the adhesive material at a position opposed to each other with the opening interposed therebetween, thereby preventing positional displacement during welding. Therefore, there is an effect that it is possible to provide a push switch that can ensure the sealing property of the accommodating portion more reliably.

According to the invention of claim 6 , by providing the pusher member between the cover sheet and the movable contact member, the operating force can be concentrated in a predetermined range of the movable contact member. Further, by welding the cover sheet and the pusher member, the contact position between the movable contact member and the pusher member becomes difficult to shift. Therefore, it is possible to provide a push switch with a stable operation feeling.

  As described above, according to the present invention, it is possible to provide a push switch in which the outer edge portion is hardly turned up and the cover sheet is welded.

It is a disassembled perspective view which shows the structure of the push switch 100 in 1st Embodiment. 2A and 2B are diagrams illustrating the push switch 100 according to the first embodiment, FIG. 2A is a perspective view illustrating an appearance of the push switch 100, and FIG. 2B is a view from the Z1 direction side illustrated in FIG. It is a top view which shows the external appearance of the push switch 100 of the state which was in contact. FIGS. 3A and 3B are views showing the movable contact member 3 in the first embodiment, FIG. 3A is a perspective view showing an appearance of the movable contact member 3, and FIG. 3B is a view from the Y2 direction side shown in FIG. It is a side view which shows the movable contact member 3 of the state seen. It is a figure which shows case 1 in 1st Embodiment, Fig.4 (a) is a perspective view which shows the external appearance of case 1, FIG.4 (b) is the state seen from the Z1 direction side shown to Fig.4 (a) It is a top view which shows case 1 of. 5A and 5B are schematic cross-sectional views showing a cross-section B-B shown in FIG. 2, FIG. 5A is a cross-sectional view showing the push switch 100 before being operated, and FIG. 5B is an operated push switch 100. FIG. It is a schematic diagram which shows the approximate location of the perimeter welding part SP, the outer edge welding part OP, and the inner edge welding part IP in 1st Embodiment. It is a perspective view which shows the external appearance of the push switch 900 of patent document 1. FIG.

[First Embodiment]
The push switch in the first embodiment will be described below.

  First, the configuration of the push switch in the present embodiment will be described with reference to FIGS. FIG. 1 is an exploded perspective view showing the configuration of the push switch 100 in the first embodiment. FIG. 2 is a diagram showing the push switch 100 according to the first embodiment, FIG. 2A is a perspective view showing an appearance of the push switch 100, and FIG. 2B is a Z1 direction shown in FIG. It is a top view which shows the external appearance of the push switch 100 of the state seen from the side. FIG. 3 is a view showing the movable contact member 3 in the first embodiment, FIG. 3 (a) is a perspective view showing the appearance of the movable contact member 3, and FIG. 3 (b) is Y2 shown in FIG. 3 (a). It is a side view which shows the movable contact member 3 of the state seen from the direction side. FIG. 4 is a view showing the case 1 in the first embodiment, FIG. 4 (a) is a perspective view showing the appearance of the case 1, and FIG. 4 (b) is from the Z1 direction side shown in FIG. 4 (a). It is a top view which shows case 1 of the state seen.

  As shown in FIG. 1, the push switch includes a case 1, a cover sheet 2, a movable contact member 3, and a pusher member 4, and is formed in a substantially rectangular parallelepiped shape as shown in FIG. 2. .

  The movable contact member 3 is made of a thin metal plate, and is formed in a substantially rectangular shape when viewed from above (Z1 direction side) as shown in FIG. Further, the movable contact member 3 has a dome portion 3a formed in a dome shape with the center portion protruding upward, and leg portions 3b are connected to the dome portion 3a at both ends in the longitudinal direction (X1-X2 direction). Is formed. Note that the most protruding portion of the dome portion 3a is defined as a top portion 3c. The movable contact member 3 has elasticity, and when it is pressed on the top 3c side, the movable contact member 3 bends and then reverses, and when the pressing is released, the movable contact member 3 returns to the state before pressing.

  The case 1 is made of a dark-colored synthetic resin material such as black that does not easily transmit light, and a metal plate is insert-molded. As shown in FIG. 4, the case 1 has an opening 1b on the upper side, a fixed contact portion 1c provided therein, and a housing portion 1a formed in a concave shape capable of housing the movable contact member 3. It has. Moreover, the case 1 has the protrusion part 1e which protrudes from the internal side surface of the accommodating part 1a. The protrusion 1e protrudes along the outer shape of the movable contact member 3 when viewed from above (Z1 direction side shown in FIG. 3), and continues from the inner bottom surface of the housing 1a to the edge of the opening 1b. Is formed. The upper surface of the case 1 including the upper surface of the protruding portion 1e is a welded portion 1d that can be welded. The metal plate insert-molded in the case 1 is exposed from the inner bottom surface of the housing portion 1a and both ends in the longitudinal direction (X1-X2 direction) of the case 1. The metal plate exposed on the inner bottom surface of the accommodating portion 1a forms a fixed contact portion 1c. The fixed contact portion 1c is provided at the center contact portion 1f provided at the center of the inner bottom surface of the accommodating portion 1a and the inner bottom surface of the accommodating portion 1a. The central contact portion 1f and the outer peripheral contact portion 1g are electrically insulated from each other. The central contact portion 1f is exposed in a three-divided circular shape. The three divided central contact portions 1f are electrically connected to each other, and the four outer peripheral contact portions 1g are electrically connected to each other. It is connected to the. The metal plate protruding in one of the longitudinal directions of the case 1 (X2 direction side) forms a first connection terminal 1h that can be electrically connected to the outside, and the metal plate protruding in the other direction is the second connection terminal 1k. Is forming. The central contact portion 1f and the first connection terminal 1h are electrically connected, and the outer peripheral contact portion 1g and the second connection terminal 1k are electrically connected.

  The cover sheet 2 is made of a synthetic resin sheet that can transmit light, and is formed in a rectangular shape as shown in FIG. When the cover sheet 2 is viewed in plan from above (Z1 direction side), as shown in FIG. 2, the cover sheet 2 has a size that can cover the opening 1b. The outer shape of the case 1 is formed so as to fit inside the outer shape of the case 1. Moreover, the adhesive material provided with adhesiveness is provided in the back surface (surface of the Z2 direction side) in the A section area | region shown in FIG.

  The pusher member 4 is made of a dark synthetic resin material such as black, which is difficult to transmit light, and is formed in a hemispherical shape as shown in FIG.

  Next, the structure of the push switch 100 will be described with reference to FIGS. 5 is a schematic cross-sectional view showing a cross section BB shown in FIG. 2, FIG. 5 (a) is a cross-sectional view showing the push switch 100 before being operated, and FIG. 5 (b) is being operated. 1 is a cross-sectional view showing a push switch 100. FIG. In FIG. 5, for ease of explanation, there are portions different from the actual structure such as the ratio of the thickness dimension of each component and the position of the outer peripheral contact portion 1g. FIG. 6 is a schematic diagram showing approximate locations of the entire circumference welded portion SP, the outer edge welded portion OP, and the inner edge welded portion IP in the first embodiment.

  As shown in FIG. 5, the pusher member 4 is disposed at the center of the surface of the cover sheet 2 on which the adhesive material is provided (see FIG. 2) so that the hemispherical surface contacts the cover sheet 2. And a part of the hemispherical surface of the pusher member 4 are welded, and the pusher member 4 is fixed to the cover sheet 2. In addition, welding is performed by giving a thermal energy by irradiation of the laser beam from the cover sheet 2 side. You may weld by methods other than the welding by a laser beam, for example, ultrasonic welding. Moreover, the case 1 accommodates the movable contact member 3 in the accommodating portion 1a. The movable contact member 3 accommodated in the accommodating portion 1a is arranged so that the top portion 3c is upward (Z1 direction side) and the leg portion 3b is in contact with the outer peripheral contact portion 1g. Further, the movable contact member 3 is arranged while being guided by the protruding portion 1e. The cover sheet 2 is attached to the upper surface of the case 1 so as to cover the opening 1b while the pusher member 4 and the movable contact member 3 face each other, and is adhered by an adhesive material. In other words, at a position of the cover sheet 2 that faces each other with the opening 1b interposed therebetween, at least a part of the case 1 and the cover sheet 2 is adhered and temporarily fixed by the adhesive material. The pusher member 4 disposed between the cover sheet 2 and the movable contact member 3 is disposed at a position corresponding to the top 3 c of the movable contact member 3. As shown in FIG. 2, when the case 1 and the cover sheet 2 are viewed from above, the cover sheet 2 is contained inside the outer shape of the case 1. Further, the cover sheet 2 is formed such that a portion corresponding to the pusher member 4 protrudes upward. The case 1 and the cover sheet 2 that are temporarily fixed in this manner are welded between the welded portion 1d that is the upper surface of the case 1 and the upper surface of the protruding portion 1e and the cover sheet 2, and are attached by welding. At this time, welding is performed except for the portion temporarily fixed by the adhesive material.

  In addition, as shown in FIG. 6, between the cover sheet | seat 2 (refer FIG. 5) and the to-be-welded part 1d of case 1, all the circumference welding part SP welded over the perimeter around the opening 1b, and The outer edge welded portion OP welded to at least a part of the outer edge of the cover sheet 2 and the inner edge welded portion IP welded to the edge of the opening 1b are formed. It is attached to the weld 1d).

  Further, as shown in FIG. 5, a weld layer WL is formed between the welded portion 1 d of the case 1 and the cover sheet 2 by welding. The weld layer WL at the location corresponding to the outer edge weld portion OP is formed thinner than the weld layer WL at the location corresponding to the entire circumference weld portion SP, and the weld layer WL at the location corresponding to the inner edge weld portion IP is It is formed thinner than the weld layer WL at a location corresponding to the circumferential weld portion SP. In addition, welding of the cover sheet 2 and the case 1 is performed by irradiating a portion other than the portion to which the adhesive material is adhered from the upper side of the cover sheet 2 so that the welded portion 1d of the case 1 and the cover sheet 2 are bonded. It is welded by giving thermal energy between. In addition, as a method of changing the thermal energy by the laser beam, for example, by adjusting the output of the laser beam, the thermal energy given by the laser beam can be changed and the thickness of the welded layer WL can be changed. For example, when the output of the laser beam is increased, the thermal energy is increased and the thickness of the welding layer WL is increased. When the output of the laser beam is decreased, the thermal energy is decreased and the thickness of the welding layer WL is decreased. In this way, by adjusting the thermal energy by the output of the laser beam, the thickness of the weld layer WL in the entire circumference welded portion SP, the outer edge welded portion OP, and the inner edge welded portion IP can be varied. Moreover, although the welding method by a laser beam was demonstrated, you may weld by another methods, such as ultrasonic welding.

  Next, the operation of the push switch 100 will be described with reference to FIG.

  In the state before the operation, as shown in FIG. 5A, in the push switch 100, the movable contact member 3 and the central contact portion 1f are separated from each other, and the central contact portion 1f and the outer peripheral contact portion 1g are electrically connected. Is not connected automatically. Next, as shown in FIG. 5B, when the movable contact member 3 is pressed downward (Z2 direction) through the cover sheet 2 and the pusher member 4, the movable contact member 3 is pressed near the top 3c. After being bent downward, the reverse operation is performed, and the back surface side of the top portion 3c comes into contact with the central contact portion 1f. When the movable contact member 3 and the central contact portion 1 f come into contact with each other, the central contact portion 1 f and the outer peripheral contact portion 1 g are electrically connected via the movable contact member 3. When the pressing on the movable contact member 3 is released, the push switch 100 returns to the state before the operation due to the elastic force of the movable contact member 3. Thus, the push switch 100 functions as a push switch by pressing the movable contact member 3 and switching the electrical connection state between the center contact portion 1f and the outer peripheral contact portion 1g.

  Hereinafter, the effect by having set it as this embodiment is demonstrated.

  In the push switch 100 of the first embodiment, the upper side is the opening 1b, the case 1 is provided with the fixed contact portion 1c inside and the housing portion 1a for housing the movable contact member 3, and the opening 1b is covered. Thus, in the push switch having the cover sheet 2 attached to the upper surface of the case 1 by welding as described above, the upper surface of the case 1 is a welded portion 1d to be welded between the cover sheet 2 and The entire circumference welded portion SP that is welded over the entire circumference around the opening 1b and the outer edge welded portion OP that is welded at least partially to the outer edge of the cover sheet 2 are welded to the cover sheet 2 and the case 1. The cover sheet 2 is attached to the upper surface of the case 1 and is formed between the portion 1d.

  Accordingly, the cover sheet 2 is welded over the entire circumference around the opening 1b at the entire circumference welded portion SP, and at the same time, is welded to the outer edge portion of the cover sheet 2 at least at the outer edge welded portion OP. And attached to the case 1. As described above, the cover sheet 2 is welded to the case 1 up to at least a part of the outer edge portion of the cover sheet 2, whereby the outer edge portion of the cover sheet 2 can be prevented from turning up. Therefore, it is possible to provide a push switch in which the outer edge portion is not easily turned up and the sheet is welded.

  Further, in the push switch 100 of the first embodiment, the weld layer WL is formed by welding between the welded portion 1d of the case 1 and the cover sheet 2, and the weld layer WL of the outer edge weld portion OP is formed on the entire circumference. It was set as the structure currently formed thinner than the welding layer WL of the welding part SP.

  Thereby, by thinning the welding layer WL of the outer edge welding portion OP, it is possible to reduce the thermal energy applied to the outer edge welding portion OP during welding. Therefore, the occurrence of sagging in the outer shape of the case 1 due to excessive heat energy can be suppressed. Therefore, the outer edge portion of the cover sheet 2 is less likely to be turned up, and an effect is provided that it is possible to provide a push switch that does not sag in the outer shape portion of the case 1.

  Moreover, in the push switch 100 of 1st Embodiment, the inner edge welding part IP welded to the edge part of the opening 1b is formed between the cover sheet 2 and the to-be-welded part 1d of the case 1. did.

  As a result, the cover sheet 2 is welded to at least a part of the edge of the opening 1b, so that the cover sheet 2 is difficult to twist during operation. By making the cover sheet 2 difficult to twist, it is possible to suppress the deterioration of the operation feeling.

  Further, the pusher member 4 is arranged between the cover sheet 2 and the movable contact member 3, but the pusher member 4 is movable by welding the cover sheet 2 to at least a part of the edge of the opening 1b. It can suppress that the location which presses the contact member 3 shifts | deviates. Therefore, it is possible to suppress changes and deteriorations in the operation feeling.

  Moreover, in the push switch 100 of 1st Embodiment, it was set as the structure by which the welding layer WL of the inner edge welding part IP was formed thinner than the welding layer WL of the perimeter welding part SP.

  Thus, by thinning the weld layer WL of the inner edge welded portion IP, the heat energy applied to the inner edge welded portion IP at the time of welding can be reduced. Therefore, it is possible to suppress the occurrence of sagging at the edge of the opening 1b due to excessive heat energy. Therefore, it is possible to suppress the deterioration of the operation feeling, the operation failure of the movable contact member 3, the contact failure between the movable contact member 3 and the fixed contact portion 1c, which may occur due to the sagging of the edge of the opening 1b. it can. Therefore, there is an effect that it is possible to provide a push switch that has a good operation feeling and is less likely to cause problems.

  Further, in the push switch 100 of the first embodiment, the case 1 has a protruding portion 1e protruding from the inner side surface of the accommodating portion 1a, and the protruding portion 1e has an outer shape when the movable contact member 3 is viewed from above. Projecting along the inner bottom surface of the housing portion 1a to the edge of the opening 1b, and the upper surface of the projecting portion 1e is a welded portion 1d, which is welded to the cover sheet 2. The configuration.

  Thus, by forming the projecting portion 1e so as to follow the outer shape of the movable contact member 3, the movable contact member 3 is disposed along the projecting portion 1e during assembly, so that assembly is facilitated. Further, by providing the protruding portion 1e up to the position of the edge of the opening 1b, the upper surface of the protruding portion 1e can be used as the welded portion 1d, and the sealing performance can be improved by increasing the welding area. Therefore, there is an effect that it is possible to provide a push switch that is easy to assemble and has a good sealing property of the accommodating portion 1a.

  In the push switch 100 according to the first embodiment, when the case 1 and the cover sheet 2 are viewed from above, the outer shape of the cover sheet 2 is formed so as to follow the outer shape of the case 1. The case 1 and the cover sheet 2 are at least partially adhered to each other with an adhesive material at a position of the cover sheet 2 facing each other across the opening 1b.

  Thus, in the first embodiment mobile phone, the positions opposite to each other with the opening 1b interposed therebetween, the cover sheet 2 is temporarily fixed before welding by adhering the cover sheet 2 to the case 1 with an adhesive material at both ends in the longitudinal direction. In addition, it is possible to prevent displacement during welding. Therefore, there is an effect that it is possible to provide a push switch that can ensure the sealing property of the accommodating portion 1a more reliably.

  Moreover, in the push switch 100 of 1st Embodiment, it has the presser member 4 arrange | positioned between the cover sheet 2 and the movable contact member 3, and the cover sheet 2 and the presser member 4 are welded. The configuration.

  Thereby, by providing the pusher member 4 between the cover sheet 2 and the movable contact member 3, the operating force can be concentrated in a predetermined range of the movable contact member 3. Further, by welding the cover sheet 2 and the pusher member 4, the contact position between the movable contact member 3 and the pusher member 4 is difficult to shift. Therefore, it is possible to provide a push switch with a stable operation feeling.

  As described above, the push switch according to the embodiment of the present invention has been specifically described. However, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the invention. Is possible. For example, the present invention can be modified as follows, and these embodiments also belong to the technical scope of the present invention.

[Modification 1]
In the first embodiment, the entire circumference welded portion SP is configured to be welded over the entire circumference around the opening 1b. However, since there is no escape space for the air inside the accommodating portion 1a, it is conceivable that when the push switch 100 is operated, the operation feeling becomes worse, or in the worst case, a malfunction that does not function as a push switch occurs. When such a problem occurs, the entire circumference welded portion SP (the outer edge welded portion OP and the outer edge welded portion OP and the outer circumference welded portion OP) can be maintained within a range where it can be substantially sealed (where air can flow in and out but moisture can be prevented). An air escape may be provided by interrupting a part of the inner edge welding portion IP).

[Modification 2]
In 1st Embodiment, although it was set as the structure which provides an adhesive material in the both ends of the longitudinal direction of the cover sheet 2, if the cover sheet 2 can be temporarily fixed and it is a position which opposes on both sides of the opening 1b, it will be the position of an adhesive material May be changed.

[Modification 3]
In 1st Embodiment, although it was set as the structure which provides an adhesive material in the both ends of the longitudinal direction of the cover sheet 2, if the temporary fixing of the cover sheet 2 can be performed by another means, it is not necessary to provide an adhesive material.

[Modification 4]
In the first embodiment, one movable contact member 3 is used. However, a plurality of movable contact members 3 may be used as necessary.

DESCRIPTION OF SYMBOLS 1 Case 1a Accommodating part 1b Opening 1c Fixed contact part 1d Welded part 1e Protruding part 1f Center contact part 1g Outer peripheral contact part 1h 1st connection terminal 1k 2nd connection terminal 2 Cover sheet 3 Movable contact member 3a Dome part 3b Leg part 3c Top part 4 Pusher member 100 Push switch IP Inner edge welded part OP Outer edge welded part SP All-around welded part WL Welded layer

Claims (6)

A case having an opening on the upper side, a fixed contact portion provided therein, and a housing portion for housing a movable contact member;
In a push switch having a cover sheet attached to the upper surface of the case by welding so as to cover the opening,
The upper surface of the case is a welded portion that is welded to the cover sheet,
An entire circumference welded portion that is welded over the entire circumference around the opening, and an outer edge welded portion that is welded at least partially to the outer edge portion of the cover sheet, and the welded portion of the cover sheet and the case is formed between the cover sheet is attached et is the top surface of the case,
Between the welded part of the case and the cover sheet, a weld layer is formed by welding,
The welded layer of the outer edge welded part is formed thinner than the welded layer of the all-around welded part,
Push switch characterized by that. Between the cover sheet and the welded portion of the case, an inner edge welded portion is formed that is welded to the edge of the opening.
The push switch according to claim 1 . The weld layer of the inner edge weld portion is formed thinner than the weld layer of the entire circumference weld portion,
The push switch according to claim 2 . The case has a protruding portion that protrudes from the inner side surface of the accommodating portion,
The protruding portion protrudes along the outer shape when the movable contact member is viewed in plan from above, and is continuously formed from the inner bottom surface of the housing portion to the edge of the opening,
The upper surface of the protruding portion is the welded portion, and is welded to the cover sheet.
The push switch according to any one of claims 1 to 3 , wherein the push switch is provided. When the case and the cover sheet are viewed from above, the outer shape of the cover sheet is formed so as to be along the outer shape of the case, and is formed into a shape that fits inside the outer shape of the case,
At the position of the cover sheet facing the opening across the opening, the case and the cover sheet are at least partially adhered by an adhesive material,
The push switch according to any one of claims 1 to 4 , wherein the push switch is provided. Having a pusher member disposed between the cover sheet and the movable contact member;
The cover sheet and the pusher member are welded,
6. The push switch according to claim 1 , wherein the push switch is provided.