KR20090012095A - Push switch - Google Patents

Abstract

A push switch is provided to reduce the size of an opening formed in a cover by forming a guide portion with bend at one process. A concave receiving portion(3) is formed in a housing(2). Conductive reversal springs(6,7) are arranged in a bottom plate part(3a) of the receiving portion. A metal cover(9) is faced with the bottom plate part. An operation member(10) is formed between a metal cover and a reversal spring. An operation member is protruded from one end of the housing. A guide portion(11) of a tongue shape is formed in the metal cover. The guide portion is extended from one end of the housing according to a pressure direction. The guide portion is inclined to the bottom plate part. A flexible portion(10c) is formed in the operation member. The flexible portion is extended to a pressure direction. The flexible portion inverts the reversal spring.

Description

Push switch {PUSH SWITCH}

The present invention relates to a push switch for pressing and operating the operation member in a direction parallel to the bottom plate portion of the housing.

The conventional push switch is provided with the housing which forms the recessed accommodating part. The switch element is formed in the accommodating part. The switch element includes a conductive inversion spring which is disposed to overlap with the bottom plate portion of the housing portion, and is turned on by inverting the inversion spring. The storage part is blocked by the dustproof sheet, and the switch element is protected from dust.

The housing is fitted with a metal cover disposed to face the bottom plate. An operating member is formed between the cover and the reverse spring so as to be pressed. This operation member protrudes from one end of the housing in the pressing direction. The cover is integrally formed with a tongue-shaped guide portion extending from the one end side of the housing along the pressing direction of the operation member and inclined toward the bottom plate portion. The width dimension of this guide part, ie, the dimension in the direction parallel to the direction in which the bottom plate part of the accommodating part is widened and orthogonal to the pressing direction of the operating member, is set constant from the start end to the end.

The flexible member is formed in the operation member so as to extend in the pressing direction and bend in a direction close to the bottom plate portion. When the flexible member is pressed from one end side of the housing toward the inside of the housing, the flexible part is guided to the guide part and bent in a direction approaching the bottom plate part, and presses and reverses the reverse spring for each of the dustproof sheets. This turns on the switch element.

The guide is formed by bending using a punch and a die. Before this bending process, an opening, ie, a slit, penetrates the cover at each of the opposing positions with the portion serving as the guide portion therebetween. Thereafter, the portion to be the guide portion is pushed and bent into the hole of the die with a punch, thereby completing the guide portion. For this reason, in the conventional push switch, the slit was formed in the position of the cover which opposes a guide part between them.

Further, when the guide portion is formed by cutting and bending without forming a slit, that is, pressing and bending while shearing with a punch and a die, since the width dimension of the guide portion follows the dimension of the hole of the die, the guide portion is caught in the hole of the die. For this reason, in order to take out a guide part from the hole of a die, it is necessary to insert a pin etc. into the hole of a die from the opposite side of a guide part, and to push out a guide part, and the guide part may be deformed at the time of the extrusion. As in the case of the conventional push switch described above, when the slit is formed and the guide portion is subjected to bending to complete the guide portion, the guide portion can be removed from the hole of the die without requiring extrusion by a pin or the like.

As a push switch of the kind demonstrated here, there exist some which are disclosed by patent document 1, for example.

[Patent Document 1] Japanese Unexamined Patent Publication No. 2005-56784

By the way, when mounting a push switch on a wiring board, an adsorption nozzle is used to carry a push switch to the predetermined position of a wiring board. In other words, the cover is lifted by adsorbing the cover to the tip of the suction nozzle, and the push switch is transported to a predetermined position on the wiring board. In the case of the adsorption nozzle used with respect to the conventional push switch mentioned above, the shape and dimension of the adsorption port of the adsorption nozzle are ideally included with a guide part and a slit. However, since electrical components mounted on the wiring board using the adsorption nozzles are various in addition to the push switches, in view of cost, the adsorption nozzles can be commonly used for a plurality of electrical components including the push switches. desirable.

Among the types of electrical components for which the suction nozzle is used, there are some smaller than the shape and dimensions including the guide and the slit. When an adsorption nozzle corresponding to such a small electric component is used for a conventional push switch, since the air leaks from the slit on both sides of the width direction of the guide part, there is a problem that the conventional push switch cannot be adsorbed to the adsorption nozzle. Occurs.

In order to solve this problem, it is considered to make the guide small. However, about the dimension of the guide part in the pushing-in direction of an operation member, since it is necessary to ensure the length for guiding the flexible part of an operation member, it cannot shorten, and about the width dimension of a guide part at the time of the press operation of an operation member, Therefore, the length which can ensure the strength which can endure the load received from a flexible part is needed, and an effective shortening is not possible.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a push switch capable of reducing the opening of the cover to form a tongue-shaped guide portion and securing the strength of the guide portion. .

Push switch of the present invention is configured as follows to achieve the above object.

[1] The present invention provides a housing in which a concave accommodating portion is formed, a switch element formed on the accommodating portion, and a conductive reversal spring disposed on the accommodating portion, and a metal disposed opposing the bottom plate. Of the cover and the cover and the reversing spring, the control member being protruded from one end of the housing in a press-fit direction, wherein the cover has the press-in direction from the one end side of the housing. A tongue-shaped guide portion extending along and inclined toward the bottom plate portion is formed, and the operation member has a flexible portion that can extend in the pressing direction and bend in a direction approaching the bottom plate portion, and the operation member is on the one end side. When pressed from the inside toward the inside of the housing, the flexible portion is guided to the guide portion to the bottom plate portion. A push switch that bends in a contacting direction and turns on the switch element by pressing and inverting the inversion spring, wherein the guide portion is formed by bending, and is in a direction parallel to the direction in which the bottom plate portion is widened and orthogonal to the indentation direction. The dimension of the said guide part is set so that the tip may taper from the start end toward the end from the said guide part.

In the present invention constituted as described above, since the guide portion is formed in one step by bending, the opening formed at the position of the cover facing the guide portion can be made small. Further, the spacing dimension of the front end face of the cover side facing each other with the guide portion therebetween follows the dimension of the punch, the width dimension of the guide portion follows the dimension of the hole of the die, and the dimension of the hole of the die is the clearance amount than the dimension of the punch. Because of its size, a portion of the guide portion that does not push out from the cover of the die can be sandwiched between the front end faces of the cover side, whereby the deformation of the guide portion can be suppressed to ensure strength.

In the present invention, the width of the guide portion is set so that the guide portion has a tapered shape from the start end toward the end, so that the guide portion is pushed into the hole of the die in the width direction of the guide portion. A gap is formed between both sides of the die and the inner surface of the hole of the die, so that the guide portion is not caught in the hole of the die. In short, even if the guide portion is formed at the same time by bending, it is not necessary to push the guide portion out of the hole of the die with a pin or the like.

[2] The present invention may be a trapezoidal shape in which the guide portion has a lower end of the guide portion in the invention described in “[1]”. In this invention comprised in this way, since the edge of a guide part is a simple shape formed in linear form, it is easy to form a guide part by bending.

[3] The present invention is the invention described in "[1]" or "[2]", wherein the bending is performed after the hole having a shape along the end of the guide portion is drilled in the cover. May be used. According to this invention comprised in this way, formation of the guide part by bending is easy.

According to the present invention, since the guide portion is formed in one step by bending, the opening formed in the cover can be made small to form the tongue-shaped guide portion. In addition, since the dimension (width dimension) of the guide part in the direction parallel to the direction in which the bottom plate part is widened orthogonal to the indentation direction is set such that the guide part is tapered from the start end to the end, the guide part is inserted into the hole of the die. In the extruded state, the guide portion can be prevented from being caught in the hole of the die, and the strength of the guide portion can be ensured.

EMBODIMENT OF THE INVENTION The push switch which concerns on one Embodiment of this invention is demonstrated using drawing.

1 is a perspective view of a push switch according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the push switch shown in FIG. 1. FIG. 3 is a plan view of the push switch shown in FIG. 1. 4 is an enlarged cross-sectional view taken along line IV-IV of FIG. 3.

As shown to FIGS. 1-4, the push switch 1 which concerns on this embodiment is equipped with the housing 2. As shown in FIG. The housing 2 is made of synthetic resin, has insulation, is formed in a substantially rectangular shape as viewed from the upper surface, and a concave housing portion 3 is formed at the center thereof. A metal first fixed contact 4 is exposed and formed in the center of the bottom plate portion 3a of the housing portion 3, and a metal second fixed contact 5 is formed outside the first fixed contact 4. Is exposed and formed. Dome-shaped conductive inversion springs 6 and 7 are disposed on the bottom plate portion 3a. The center of the concave curved surface side of the reversal spring 6 can be contacted and separated with respect to the first fixed contact 4, and the edges of the reverse springs 6, 7 are always in contact with the second fixed contact 5. I'm in contact. In short, from the first fixed contact 4, the second fixed contact 5 and the inverting springs 6 and 7, a switch element which is turned on by the inversion of the inverting springs 6 and 7 is constituted. The switch element is formed in the accommodating part 3. In addition, although the two reverse springs 6 and 7 overlap in order to ensure strength, one piece may be sufficient as long as strength can be ensured.

In addition, the accommodating part 3 is occluded by the dustproof sheet 8 which consists of a material which has insulation and elasticity, for example, a polyamide resin.

The housing 2 is equipped with a metal cover 9 disposed to face the bottom plate portion 3a. An operating member 10 is formed between the cover 9 and the reverse spring 6. The operation member 10 is made of synthetic resin, has an insulating property, and has a frame shape held between the cover 9 and the reverse spring 7 so as to be press-fit in a direction parallel to the bottom plate portion 3a (arrow P direction). It is formed in the main body 10a, one end of the main body 10a in a press-in direction, and protrudes from the one end of a housing, and it is located inside the main body 10a, and it presses from the press part 10b side. The flexible part 10c which extends along the pressing direction and can bend in the direction which approaches the bottom board part 3a is integrally formed. The cover 9 is integrally formed with a tongue-shaped guide portion 11 extending from the one end side of the housing 2 along the pressing direction of the operation member 10 and inclined toward the bottom plate portion 3a. The end of the flexible portion 10c is in contact with the guide portion 11.

The push switch 1 configured as described above has a pressing part 10b pressed and the operation member 10 pressed from one end side of the housing 2 toward the inside of the housing 2, that is, in the arrow P direction, The flexible part 10c is guided to the guide part 11, and is bent in the direction approaching the bottom plate part 3a, and the dustproof sheet 8 whole presses the inversion spring 6 and inverts. Thereby, the 1st fixed contact 4 and the 2nd fixed contact 5 become conductive through the inversion spring 6, and a switch element is turned on.

In particular, in the push switch 1, the guide part 11 is formed by bending the long hole 11a of the shape along the end in the cover 9, and then bending and forming it. The width dimension of the guide part 11, ie, the dimension in the direction (up-down direction in FIG. 3) parallel to the direction in which the bottom plate part 3a is widened and orthogonal to the indentation direction, is determined by the guide part 11 from its starting end. The end is tapered toward the end, for example, so as to have a trapezoidal shape having its bottom end at the bottom.

Here, the bending for forming the guide part 11 in the cover 9 is demonstrated using drawing.

5 is a side view of a punch and a die used for forming the guide portion. FIG. 6 is a top view of the punch and die shown in FIG. 5. FIG. FIG. 7 is a partial sectional view showing a state in which the guide portion is formed at the same time by bending by the punch and the die shown in FIGS. 5 and 6. 8 is a top view of the guide portion formed by the bending shown in FIG. 7. In addition, it is abbreviate | omitted about the long hole 11a of the shape along the edge of the guide part 11 here.

As shown to FIG. 5, 6, the cross-sectional shape of the punch 20 is trapezoidal shape. The blade of the punch 20 has a predetermined length from the edge of the tip end portion of the punch 20 corresponding to the entire trapezoidal upper bottom and the end of one upper bottom side on the opposite side connecting the upper bottom and the lower bottom. It is formed in the part corresponding to the position of to, and the part corresponded to the position of a predetermined length from the edge of the other upper bottom side of the same opposite side. In the die 21, trapezoidal holes 21a corresponding to the punches 20 are formed. The blade of the die 21 is formed at the edge of the hole 21a at the portion corresponding to the entire trapezoidal upper bottom, and at the portion corresponding to the entirety of the opposite sides connecting the upper bottom and the lower bottom, and punched. It is paired with the blade of (20). A clearance 22 is formed between the punch 20 and the die 21.

To form the guide part 11, the cover 9 is first fixed on the die 21. Next, the punch 20 is moved toward the hole 21a of the die 21, and the guide portion 11 in the center of the cover 9 is moved by the blade of the punch 20 and the blade of the die 21. While shearing the edge of the part to be used, it is pressed toward the hole 21a and bent. And as shown in FIG. 7, the part which corresponds to the trapezoid lower bottom in the front-end | tip part, and the part in which the blade | edge is not formed in the opposite side which connects the upper bottom and the lower bottom is covered ( When it moves to the position which abuts 9), the guide part 11 is completed.

When the guide portion 11 is formed in this manner, the guide portion 11 is set in a trapezoidal shape in which the tip is tapered from the start end to the end. As shown in FIG. In the state pushed into the hole 21a of the space | interval, the clearance gap between the both side surfaces 11b and 11c in the width direction of the guide part 11, and the inner surface (not shown) of the hole 21a of the die 21 is shown. Is formed. As a result, the guide portion 11 is not caught in the hole 21a of the die 21. In other words, even if the guide portion 11 is formed at the same time by bending, the guide portion 11 does not need to be pushed out of the hole 21a of the die 21 with a pin or the like.

Moreover, the space | interval dimension between the front-end surfaces 9a and 9b on the cover 9 side which opposes the guide part 11 between them follows the dimension of a punch, and the dimension of the guide part 11 is a hole of the die 21. Since the dimension of the hole 21a of the die 21 is larger than the dimension of the punch 20 by the clearance 22 by following the dimension of 21a, the die 21 from the cover 9 in the guide part 11 is carried out. The portion 11d which is not pushed out into the hole 21a of the) is sandwiched between the front ends 9a and 9b on the cover 9 side, and the deformation of the guide portion 11 is suppressed.

According to the push switch 1 which concerns on this embodiment, the following effects are acquired.

In the push switch 1, since the guide part 11 is formed in one process by bending, the opening formed in the position of the cover 9 which opposes the guide part 11 between can be made small.

According to the push switch 1, since the width | variety dimension of the guide part 11 is set so that the guide part 11 may become a shape which becomes a taper shape toward the end from the start end, the hole 21a of the die 21 is carried out. The guide part 11 can be prevented from pinching. Moreover, the part 11d which does not push out from the cover 9 of the guide part 11 to the hole 21a of the die 21 is made to be sandwiched between the front-end surfaces 9a and 9b of the cover 9 side. As a result, the deformation of the guide portion 11 can be suppressed to ensure strength.

In the push switch 1, the guide part 11 is trapezoid shape which makes the start end into a lower floor. That is, since the edge of the guide part 11 is a simple shape formed in linear form, it is easy to form the guide part 11 by bending.

In the push switch 1, since bending is performed after the long hole 11a of the shape along the end of the guide part 11 was drilled in the cover 9, the formation of the guide part 11 by bending is performed. easy.

1 is a perspective view of a push switch according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the push switch shown in FIG. 1. FIG.

3 is a plan view of the push switch shown in FIG. 1.

4 is an enlarged cross-sectional view taken along line IV-IV of FIG. 3.

5 is a side view of a punch and a die used for forming the guide portion.

FIG. 6 is a top view of the punch and die shown in FIG. 5. FIG.

FIG. 7 is a partial cross-sectional view showing a state in which the guide portion is formed by bending by the punch and the die shown in FIGS. 5 and 6.

8 is a top view of the guide portion formed by the bending shown in FIG. 7.

Explanation of the sign

1: push switch

2: housing

3: storage

3a: bottom plate

4: first fixed contact

5: second fixed contact

6: reverse spring

7: reversing spring

8: dustproof sheet

9: cover

9a, 9b: shear surface

10: operation member

10a: main body

10b: pressing part

10c: flexible part

11: guide

11a: long hole

11b, 11c: side

11d: Not pushed out

20: Punch

21: Die

21a: hole

22: clearance

Claims (3)

A switch element including a housing having a concave accommodating portion, a conductive element spring formed in the accommodating portion, and disposed on a bottom plate portion of the accommodating portion, a metal cover disposed to face the bottom plate portion, and the cover; It is provided between the said reversal spring so that it can be pressed and provided with the operation member which protruded from the one end of the said housing in a pushing-in direction, The cover is provided with a tongue-shaped guide portion extending from the one end side of the housing along the pressing direction and inclined toward the bottom plate portion. The operation member has a flexible portion extending in the pressing direction and capable of bending in a direction proximate to the bottom plate portion, When the operation member is pressed toward the inside of the housing from the one end side, the flexible part is guided to the guide part and bent in a direction approaching the bottom plate part, thereby turning on the switch element by pressing and inverting the inversion spring. As a push switch, The guide is formed by bending, The dimension of the said guide part in the direction parallel to the direction in which the said bottom plate part spreads, and orthogonal to the said pushing direction is set so that the said guide part may taper from the start end toward the end. The method of claim 1, And the guide portion has a trapezoidal shape having its beginning end at the bottom bottom thereof. The method according to claim 1 or 2, And the bending is performed after the hole having a shape along the end of the guide portion is drilled in the cover.

Images