KR100634779B1 - Push button switch - Google Patents

Abstract

The push button switch of the present invention includes an operating member having a housing having a housing, a fixed contact formed on an inner bottom surface of the housing, a movable contact disposed on the fixed contact, a pressing portion and a flexible operating portion projecting from the side of the housing. And a cover body attached to the upper surface of the housing having an inclined piece cut out in the receiving portion, wherein the actuating portion slides on the inclined piece and bends downward by pressing a pressing part to press the movable contact. And a deformation preventing portion that prevents the cover body having the inclined piece from being swelled in the opposite direction to the direction in which the movable contact of the housing portion is arranged at the time of pressing the operation member.

Push button switch

Description

Push Button Switches {PUSH BUTTON SWITCH}

1 is a plan view showing a push button switch of the present invention,

2 is a side view showing a push button switch of the present invention;

3 is a sectional view showing the principal parts of a push-button switch of the present invention;

4 is a sectional view showing the principal parts of a push-button switch of the present invention;

5 is a plan view showing a housing of a push button switch of the present invention;

Fig. 6 is a side view showing a state in which the push button switch of the present invention is soldered and attached to a surface mount substrate;

7 is a side view showing a state in which the leg portion of the cover body of the present invention is soldered wide and attached;

8 is a plan view showing a state in which ribs are formed on a cover body of a push button switch of the present invention;

9 is a side view showing a state in which a locking portion is formed in a leg portion of a cover of a push button switch of the present invention;

10 is an exploded perspective view showing a conventional push button switch, and

11 is a cross-sectional view showing a conventional push button switch.

* Explanation of symbols for the main parts of the drawings *

1: housing 1a: storage

1b: protrusion 1c: cutout

1d ： locking groove 2 ： fixed contact

2a: External connection terminal 3: Fixed terminal

3a: External connection terminal 4: Movable contact

4a: Peripheral part 4b: Central part

5: Dustproof sheet 6: Operation member

6a: Opening section 6b: Expecting section

6c: operating part 6d: pressing part

6e: Arm part 7: Cover body

7a: Top plate 7b: Engaging recess

7c: leg part 7d: engaging arm part

7e: Inclined piece 7f: Rib

7g: Jams 8: Board

9: solder

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push button switch used as a switch for operating various electronic devices, and more particularly to a thin lateral pressure type push button switch.

In the structure of the conventional push button switch, the operation member which cuts from the cover body into the housing and opposes a movable contact and opposes a movable contact is provided, and the operation member which has an elastic operation part formed between this inclined piece and a movable contact is pressed. BACKGROUND ART Push button switches are known in which an operating part slides on an inclined piece by pressing a part and presses a movable contact to switch the contact (for example, see Japanese Utility Model Registration No. 2572590).

Hereinafter, the structure of the conventional push button switch is demonstrated based on drawing.

10 is an exploded perspective view of a conventional push button switch, and FIG. 11 is a cross-sectional view of a conventional push button switch.

The conventional push button switch has a housing 11 having an opening 10, fixed contacts 12, 13 formed on the inner bottom of the opening 10, and movable arranged on the fixed contacts 12, 13. A dustproof sheet 15 formed on the movable contact 14 and made of polyimide or the like, an operation member 16 for operating the movable contact 14 through the sheet 15; The cover body 17 is attached to an upper portion of the housing 11 and covers the opening.

The fixed contacts 12, 13 are integrally formed with the housing 11 by insert molding, and the external terminals 12a, 13a derived from the fixed contacts 12, 13 are respectively mounted on the outer wall of the housing 11. Formed.

The housing 11 has four protrusions 20 projecting upwardly from four corners, a guide portion 21 formed in each of these protrusions 20 to guide the operation member 16, and at one side end. A locking portion that protrudes outwardly from the wall portion 22 protruding upward, the block portion 23 protruding outward from the other side end, and the protrusion 20 on the other side end, respectively, to hang the cover body 17 ( 24,25) is provided.

The movable contact 14 is made of a thin metal plate having elasticity and is disposed in the opening 10 of the housing 11. This movable contact 14 has two slits 26 parallel to the moving direction of the operating member 16, the peripheral portion 27 always in contact with the fixed contact 12 and the central portion 28 curves upwards. Positioned on the other fixed contact 13.

The dustproof sheet 15 is mounted on the upper surface 11a of the housing 11, and the operation member 16 is mounted on the sheet 15.

The cover body 17 is formed at four corners, the slits 30 which engage with the projections 20 respectively, and protrude downward from the side ends so that the upper surface 11a of the housing 11 and the upper end of the guide portion 21. It is provided with the wall part 31 which abuts, and the pair of arm part 32 which protrude downward from the other side end and engage with the said latching parts 24 and 25, respectively. Moreover, the cover body 17 is provided with the inclined piece 33 which cuts and stands up from the center part to the housing 11 inside, and opposes the center part 28 of the movable contact 14.

The operating member 16 is formed between the inclined piece 33 and the center portion 28 of the movable contact 14 and the side of the actuating portion 34 and above the guide portion 21. The U-shaped guide part 35 which slides and the press part 36 which protrudes outward from the side of the housing 11 are comprised. The operating part 34 is connected to the pressing part 36 through the thin part 34a, and has elasticity. Incidentally, the inclined piece 33 is engaged with the opening 39 formed by the operating portion 34 and the guide portion 35.

The push button switch cuts the inside of the housing 11 from the cover body 17 when the pressing portion 36 of the operating member 16 is pressed until it contacts the block portion 23 in the left direction in FIG. 11. The operating part 34 of the operating member 16 is guided on the inclined piece 33 which is erected, so that the operating part 34 is elastically deformed in the thin part 34a while being counterclockwise in FIG. 11. Because of the rotational movement, the tip of this actuating portion 34 presses the center portion 28 of the movable contact 14 via the seat 15. As a result, the center portion 28 is inverted downward and in contact with the fixed contact 13 to be in a switch-on state.

However, in the structure of the conventional push button switch mentioned above, since the cover body is attached to the housing by the arm part and the engaging part formed in the front-back direction along the operation direction of the operation member, the inclined piece is operated by the operation member. When the slide slides, the cover body formed with the inclined piece is easily lifted up to the opposite side to the pushing direction of the movable contact, which may cause a deviation in the inverted position of the movable contact with respect to the amount of operation of the operating member, resulting in a bad operation feeling. There was a problem of inhibiting the thinning of the button switch.

Therefore, an object of the present invention is to provide a push button switch which can solve the problems described above, obtain a good feeling of operation, and can be made thin.

In order to solve the above problems, in the present invention, a first solution means includes a housing having a housing, a fixed contact formed on the inner bottom surface of the housing, a movable contact disposed on the fixed contact, and protruding from the side of the housing. An operating member having a pressing part and a flexible operating part, and a cover body having an inclined piece cut in the receiving part and attached to an upper surface of the housing, wherein the operating part is pressed on the inclined piece by an operation of pressing the pressing part. A push button switch that pushes the movable contact by sliding downward to bend, wherein the cover body having the inclined piece swells in a direction opposite to the direction in which the movable contact of the housing part is arranged at the time of pressing the operating member. It was set as the structure which provided the deformation | transformation blocking part to prevent.

Moreover, as a 2nd solution means, the rib was formed in the vicinity of the said inclined piece of the said cover body along the operation direction of the said operation member, and it was set as the structure which comprised the said deformation | stopping prevention part with this rib.

Further, as a third solution means, a part of the cover body extends from both side portions facing each other with the inclined piece with respect to the operation direction of the operation member to both side surfaces of the housing, thereby forming a leg portion. The engaging piece was formed in the part, and the said engaging piece was made to engage with the said housing, and it was set as the structure which comprised the said deformation | transformation stop part.

In addition, as a fourth solution, the housing is provided with an external connection terminal, and the cover body is formed of a metal plate, and both sides of the metal plate face each other with the inclined pieces interposed with respect to the operation direction of the operation member. The deformation preventing portion was formed by protruding from the portion to both sides of the housing to form a leg portion, and soldering and attaching the tip of the leg portion to the surface mounting substrate simultaneously with the external connection terminal.

Moreover, as a 5th solution means, it was set as the structure which arrange | positioned the said press part and the said external connection terminal in the position which opposed the said deformation | blocking prevention part.

Further, as a sixth solution means, the external connecting terminal is arranged on the rear end side of the housing with respect to the operation direction of the operating member, and the width of the leg portion is formed to be wider than the width of the external connecting terminal. It was.

Moreover, as a 7th solution means, the space | gap was formed between the said leg part and the side surface of the said housing.

(The best mode for carrying out the invention)

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of the pushbutton switch of this invention is shown to FIG. 1 is a plan view of the push button switch, FIG. 2 is a side view of the push button switch, FIG. 3 is a sectional view of the main part of the push button switch, FIG. 4 is a sectional view of the main part when the push button switch is pressed, FIG. 5 is a plan view of the housing, and FIG. 6 FIG. 7 is a side view showing a state in which a push button switch is soldered and attached to a surface-mount substrate, FIG. 7 is a side view showing a state in which a leg portion of the cover body is soldered wide, and FIG. 8 is a state in which a rib is formed in the cover body. 9 is a side view showing a state where a locking portion is formed in the leg portion of the cover body.

As shown in Figs. 1 to 3 and 5, the push button switch of the present embodiment includes a housing 1 having an accommodating portion, a pair of fixed contacts 2 and 3 formed opposite the inner bottom surface of the accommodating portion, A movable contact 4 disposed on these fixed contacts 2, 3, a dustproof sheet 5 formed on the movable contact 4 and made of polyimide or the like, and the movable contact 5 via the dustproof sheet 5; It consists of the operation member 6 which operates (4), and the cover body 7 which is attached to the upper surface of the said housing 1, and covers the said accommodating part.

The housing 1 is made of an insulating material such as synthetic resin, is formed in a box shape with an upper surface open, and has a housing portion 1a. Moreover, the projection 1b which protrudes upward is formed in four corners of the upper surface side of the housing 1, and the engagement recessed part 7b formed in the four corners of the cover body 7 mentioned later in this projection 1b is carried out. Will be engaged and positioned. Moreover, the cutout part 1c is formed in one side surface of the housing | casing 1, and the cutout part 1c has the pressing part 6d of the operation member 6 mentioned later, and it hangs so that it can move to a pushing direction. Will be matched.

In addition, a pair of fixed contacts 2 and 3 made of a conductive metal plate are integrally opposed to the inner bottom surface of the housing portion 1a of the housing 1 in a state where a part thereof is expressed by a method such as insert molding. It is arranged. In addition, external connection terminals 2a and 3a derived from the fixed contacts 2 and 3 respectively protrude outward from the side surfaces of the housing 1. The external connection terminals 2a and 3a protrude substantially parallel to the bottom surface of the housing 1, and then their ends are bent upwards with air gaps S formed along the side of the housing 1 to form a terminal for surface mounting. (J vent type).

The movable contact 4 is made of a conductive thin metal plate having elasticity, and is disposed on the pair of fixed contacts 2, 3 of the housing portion 1a of the housing 1, the peripheral portion 4a of which is fixed on one side. It is always in contact with the contact 2, and the center part 4b is arrange | positioned in the state which opposes on the other stationary contact 3 in the state curved upward. Moreover, when the center part 4b is pressed, the curved part is formed so that reversibility is possible, and it contacts with the fixed contact 3 at the time of this reversal.

The dustproof sheet 5 consists of insulating resin sheets, such as polyimide, etc., and is arrange | positioned so that the periphery may be mounted on the upper surface of the housing 1, and covers the accommodating part 1a. Moreover, the operation member 6 mentioned later is mounted on this dustproof sheet 5, and the center part 4b of the movable contact 4 by the operation part 6c of the operation member 6 via the dustproof sheet 5 is carried out. Is to be pressed.

The operating member 6 is made of an insulating material such as a synthetic resin, and the operating member 6 has a base 6b having a rectangular shape and having an opening 6a at the center thereof, and a cantilevered shape protruding from the opening 6a. The flexible operating part 6c and the pressing part 6d which protrude out from the cutout part 1c of the said housing 1 are formed. The operation part 6c is connected to the pressing part 6d via the thin arm part 6e, and this arm part 6e is bent so that the operation part 6c can elastically displace downward.

Moreover, the operation member 6 is mounted on the upper surface of the dustproof sheet 5 mounted on the upper surface of the said housing 1, and the press part 6d which protrudes from the cutout part 1c of the housing 1 is pressed down. It is arrange | positioned so that the slide movement to a horizontal direction is possible in the accommodating part 1a of the housing | casing 1.

The cover 7 is formed by punching and bending a conductive metal plate, and is formed at four corners of the flat upper plate portion 7a and the upper plate portion 7a, respectively, with the upper surface side projections 1b of the housing 1. A leg portion (b) which protrudes from a pair of engagement recesses (7b) to be engaged and opposed side ends of the upper plate portion (7a) and is bent in a state in which a space (S) is formed along the side of the housing (1) and extends downwardly ( 7c) and the some engaging arm part 7d which protrudes downward from the other side end and engages with the engaging part which is not shown in the housing 1, respectively.

In addition, the upper plate portion 7a of the cover body 7 is cut out from the center portion to the inside of the housing portion 1a of the housing 1, and an opening portion whose tip side is formed in the base portion 6b of the operation member 6 ( The inclined piece 7e which is inserted in 6a) and opposes the center part 4b of the said movable contact 4 is formed. The inclined piece 7e is bent downward, and an actuating part 6c formed at the front end of the arm part 6e having the flexibility of the operation member 6 on the slope of the inclined piece 7e slides. As a result, the operating portion 6c is pressed down to press the central portion 4b of the movable contact 4 downward.

Moreover, the said leg part 7c formed by protruding from the pair of side end parts which oppose the upper board part 7a of the cover body 7, and extending downward is provided with the said inclined piece (with respect to the operation direction of the said operation member 6). 7e) is formed to protrude to both sides of the housing from opposing side portions with each other therebetween.

In order to assemble the push button switch having the above configuration, the movable contact 4 is first mounted in the housing portion 1a of the housing 1, and the dustproof sheet is covered with the dustproof sheet 5 on the movable contact 4. (5) The circumference is joined to the upper surface of the housing 1. Next, after arranging the operation member 6 on the dustproof sheet 5, the cover 7 is mounted on the housing 1. At this time, the projections 1b are inserted into the engagement recesses 7b formed at the four corners, respectively, and the engagement arm portions 7d are hooked onto the engagement portions (not shown) of the housing 1, respectively. do.

Next, the operation of the push button switch having the above configuration will be described with reference to FIGS. 3 and 4.

First, in the initial state in which the operating member 6 is not pressed, the operating portion 6c of the operating member 6 is located near the root of the bent portion of the inclined piece 7e of the cover 7 as shown in FIG. 3. It is located, and the movable contact 4 and the fixed contact 3 are spaced apart without elastic displacement below.

From this state, when the pressing part 6d of the operation member 6 is pushed to the right direction of FIG. 4, the inclined surface of the inclined piece 7e cut out from the cover 7 to the inside of the housing 1 is placed on the operation member ( The operation part 6c of 6) is guided by sliding, so that the operation part 6c rotates in the downward (clockwise) direction as shown in FIG. 4 while elastically displacing in the arm part 6e, and thus this operation is performed. The tip of the portion 6c presses the center portion 4b of the movable contact 4 through the dustproof sheet 5.

As a result, the center portion 4b is inverted downward and in contact with the fixed contact 3 to be in the on state. From this state, when the pressing part 6d is released, the inclined piece 7e is rotated in the upward (counterclockwise) direction of the operating part 6c by the elastic force of the arm part 6e itself. By sliding on the inclined surface of the side), the operation member 6 slides to the left direction in FIG. 4 to return to the initial state. At this time, according to the rotational movement of the operating part 6c, the center part 4b of the movable contact 4 is also reversed upward by the elastic force and separated from the fixed contact 3, and the switch is turned off.

6 and 7 show a state in which the push button switch having the above-described configuration is surface-mounted and attached to a mounting substrate such as an electronic device (not shown).

In this case, the external mounting terminals 2a and 3a for protruding from the side surface of the housing 1 are attached to the mounting substrate 8 by soldering with solder 9. At the same time, the leg portion 7c which protrudes from a pair of opposite side ends of the upper plate portion 7a of the cover 7 and is bent in a state in which a space S is formed along the side of the housing 1 and extends downward is provided. The tip side is soldered with solder 9 in the same manner.

The push button switch of the above structure reacts when the center of the upper plate portion 7a of the cover member 7 slides the inclined surface of the inclined piece 7e in the center of the upper plate portion 7a of the cover member 7 during the operation thereof. By this, it is elastically supported upward by the elastic force of the arm part 6e and swells.

In this configuration, however, the cover 7 is formed of a metal plate and at the same time, a part of the cover 7 is disposed on both sides of the housing 7 opposite to the operation direction of the operation member 6 with the inclined piece 7e interposed therebetween. Since it protrudes on both sides of 1) and forms the leg part 7c, the front end of this leg part 7c was made to solder and attach to the surface mounting board 8 simultaneously with external connection terminals 2a and 3a. When mounting on the board | substrate 8, the leg part 7c (deformation stop part) of the cover body 7 is soldered simultaneously with the external connection terminals 2a and 3a, and it can prevent that a cover body lifts up reliably.

In FIG. 7, the external connection terminals 2a and 3a are arranged on the rear end side of the housing 1 with respect to the operation direction of the operation member 6, and the width W1 of the leg portion 7c is externally connected. It is formed so that it may become wider than the width W2 of the terminal 2a, 3a. By forming the leg portion 7c in this manner, the soldering area of the leg portion 7c can be largely secured, so that the soldering by the solder 9 can be performed in a strong manner.

Moreover, since the pressing part 6d of the operation member 6 and the external connection terminals 2a and 3a were arrange | positioned in the position which opposed the leg part 7c; Even if the pressing part 6d is inclined upward and pressed and the rotation moment at the time of pressing operation acts by pushing the external connection terminals 2a and 3a to the push button switch, the leg part 7c is firmly soldered. The push button switch can be prevented from peeling off.

Moreover, in this structure, since the space | interval S was formed between the leg part 7c and the housing 1 side surface, since the solder 9 can penetrate and solder from both sides of the board surface of the leg part 7c, it is strong The solder can be brazed at the same time, and at the same time, the flux can be prevented from entering into the switch between the leg portion 7c and the side surface of the housing 1 at the time of soldering.

8, the ribs 7f elongated by a method such as protruding along the operation direction of the operation member 6 on both sides of the inclined piece 7e formed on the upper plate portion 7a of the cover body 7; Deformation preventing portion) is formed. Thus, since the cover body 7 becomes difficult to deform by providing the rib 7f in the upper plate part 7a, since the deformation | transformation stopper can be formed simply without adding a component, inexpensive correspondence is attained.

In addition, as shown in FIG. 9, the front end of the leg part 7c formed by extending and protruding from both side parts of the cover body 7 to the both side surfaces of the housing 1 is bent inward to form a locking piece 7g. Engaging grooves 1d are formed on both side surfaces of the housing 1. Then, by engaging the locking piece 7g with the locking groove 1d, the center of the upper plate portion 7a can be prevented from swelling upward, and since the cover body 7 becomes difficult to deform, the parts are likewise separately removed. Since the deformation preventing portion can be easily formed without adding, the cover body 7 can be securely engaged with the housing 1 by the locking piece 7g of the leg portion 7c. .

On the other hand, in this case, it is not necessary to solder the leg portion 7c of the cover 7 to the surface mounting substrate 8, and only the external connection terminals 2a and 3a are soldered and attached to the surface mounting substrate 8. do.

According to the embodiment of the present invention described above, the operating portion 6c of the operating member 6 is moved to the inclined piece 7e of the cover 7 in accordance with the operation of pressing the pressing portion 6d of the operating member 6. In the configuration of the push button switch which pushes on the movable contact 4 disposed downward by sliding on the inclined surface and bending downward, the cover having the inclined piece 7e at the time of the operation of pressing the operation member 6. Leg 7c which can be soldered to the surface-mounting substrate 8 as a deformation preventing portion that prevents the sieve 7 from swelling in the opposite direction (upward) to the direction in which the movable contact 4 of the housing portion 1a is arranged. ), The rib 7f formed on the upper plate portion 7a of the cover body 7 and the locking piece 7g to be engaged with the locking groove 1d of the housing 1 are formed. Even if the operating part 6c slides on the inclined surface of the inclined piece 7e at the time of pressing operation, these deformation preventing parts Because it can be prevented from rising by hear the cover body (7), and at the same time to obtain a satisfactory operation feeling can be reduced the thickness of the switch.

As described above, the push button switch of the present invention includes a housing having an accommodating portion, a fixed contact formed on the inner bottom surface of the accommodating portion, a movable contact disposed on the fixed contact, a push portion protruding from the side of the housing, and a flexible operation. And a cover member attached to the upper surface of the housing having an inclined piece cut out in the receiving portion and attached to an upper surface of the housing, and the actuating portion slides on the inclined piece and bends downward by pressing the pressing portion to press the movable contact. The push button switch is a push button switch, in which a cover body having an inclined piece at the time of pressing the operation member forms a deformation preventing portion that prevents swelling in a direction opposite to the direction in which the movable contact of the housing part is arranged, and thus the operation of pressing the operation member. As a cover body does not lift up by a deformation prevention part even if an operation part slides on an inclined piece at the time, At the same time to obtain the compatible operation feeling enables the thickness of the switch.

In addition, since ribs are formed in the vicinity of the inclined pieces of the cover body along the operation direction of the operating member, and the deformation preventing portion is formed by the ribs, the deformation preventing portion can be simply formed without additional parts, so that an inexpensive correspondence is possible. Become.

In addition, a part of the cover body extends from both side portions facing each other with respect to the operation direction of the operation member to both side surfaces of the housing to form a leg portion, and at the same time, a hook portion is formed on the leg portion, so that the locking piece is formed. Since the deformation stopper is formed by engaging with the housing, the deformation stopper can be simply formed without additional parts likewise, so that an inexpensive response is possible. Moreover, the cover body can be reliably engaged with the housing by the engaging piece of the leg portion.

In addition, the housing is provided with an external connection terminal, and the cover body is formed of a metal plate and at the same time a part of the metal plate extends to both sides of the housing from the opposite sides facing the inclined pieces with respect to the operation direction of the operation member so that the leg is formed. And the deformation preventing portion is formed by soldering and attaching the tip of the leg portion to the surface mounting substrate at the same time as the external connection terminal. When the substrate is mounted on the substrate, the deformation preventing portion of the cover body is soldered simultaneously with the external connection terminal to ensure that the cover body is lifted up. It can prevent going up.

Moreover, since the pressing part and the external connection terminal were arrange | positioned in the position which opposed the deformation | transformation blocking part, the push button switch can be prevented from peeling off by the rotation moment at the time of operation which made the external connection terminal into the point.

In addition, since the external connection terminals are arranged on the rear end side of the housing with respect to the operation direction of the operation member, and the width of the leg portion is formed wider than the width of the external connection terminal, the soldering area of the leg portion can be largely secured. Therefore, soldering can be performed robustly.                     

In addition, since a gap is formed between the leg portion and the side surface of the housing, soldering can be performed on both sides of the plate surface of the leg portion, so that soldering can be performed firmly and flux enters the switch through the side portion of the leg portion and the housing. Can be prevented.

Claims (7)

A housing having a housing portion, a fixed contact formed on the inner bottom surface of the housing portion, a movable contact disposed on the fixed contact, a pressing member and a flexible operating portion projecting from the side of the housing, and the housing portion A push button switch having a cover piece attached to an upper surface of the housing having an inclined piece cut out therein, wherein the actuating portion slides over the inclined piece to bend downward by an operation of pressing the pressing part to press the movable contact. And a deformation preventing portion that prevents the cover body having the inclined piece from being inflated in a direction opposite to the direction in which the movable contact of the housing portion is disposed during the operation of pressing the operation member. The push button switch according to claim 1, wherein a rib is formed in the vicinity of the inclined piece of the cover body along the operation direction of the operation member, and the deformation preventing portion is formed by the rib. 2. The leg portion of claim 1, wherein a part of the cover member extends from both side portions facing each other with respect to the operation direction of the operation member to both side surfaces of the housing to form a leg portion. A push button switch, comprising: a deformed stopper by forming a catching piece and engaging the catching piece with the housing. 2. The housing according to claim 1, wherein the housing has an external connection terminal, and the cover body is formed of a metal plate, and a part of the metal plate is opposed to both sides of the inclined piece with respect to the operation direction of the operation member. A push button switch configured to protrude to both sides of the housing to form a leg portion, and the deformation preventing portion is formed by soldering and attaching the tip of the leg portion to the surface-mounting substrate simultaneously with the external connection terminal. The push button switch according to claim 4, wherein the pressing portion and the external connection terminal are disposed at opposite positions with the deformation preventing portion interposed therebetween. The said external connection terminal is arrange | positioned behind the center of the said housing with respect to the operation direction of the said operation member, and the width | variety of the said leg part was formed wider than the width of the said external connection terminal, It is characterized by the above-mentioned. Push button switch. The push button switch according to any one of claims 4 to 6, wherein a gap is formed between the leg portion and the side surface of the housing.

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