CN201112208Y - push switch - Google Patents

Abstract

The utility model relates to a push switch, which comprises an insulating body, a fixed contact integrally formed with the insulating body, a first movable contact piece and a second movable contact piece arranged on the insulating body, and a second movable contact piece arranged on the second movable contact piece. The film above the sheet and the shielding shell that fixes the first and second movable contact sheets and the film in the insulating body, the fixed contacts include the central fixed contact, the first peripheral fixed contact located outside the central fixed contact and the first peripheral fixed contact arranged on the A pair of second peripheral fixed contacts arranged on the outer side of the first peripheral fixed contact and higher than it; wherein the second connection part extends from the end of the first peripheral fixed contact and is buried in the insulating body, and the bending part is formed from the second connection part extends and is located vertically below it, punches from one side of the second peripheral fixed contact to form a drop part, and the third connecting part connects the two drop parts and is located on the same plane as the bending part; this structural design makes the central fixed The punching of the contact, the first peripheral fixed contact, and the second peripheral fixed contact can be completed by using a set of molds.

Description

push switch

【Technical field】

The utility model relates to a push switch, in particular to a two-stage push switch applied to electronic product equipment.

【Background technique】

A two-stage push switch, which includes a housing provided with a housing part, a central fixed contact arranged on the inner bottom surface of the housing part of the housing, a first peripheral fixed contact arranged outside the central fixed contact, and a first peripheral fixed contact arranged on the second A second peripheral fixed contact located outside the peripheral fixed contact and higher than the first peripheral fixed contact, the central expansion part is arranged on the upper part of the central fixed contact, and the peripheral part is always in contact with the dome-shaped lower part of the first peripheral fixed contact A movable contact, and a dome-shaped upper movable contact whose outer diameter is larger than that of the lower movable contact, the central expansion portion is arranged to cover the lower movable contact, and the peripheral portion is in constant contact with the second peripheral fixed contact. The first peripheral fixed contact, the second peripheral fixed contact, and the central fixed contact are respectively connected to the coplanar welded portion protruding from the bottom of the insulating body. When assembling the push switch to the corresponding circuit, the soldering part can be welded to the corresponding circuit. Pressing the upper movable contact makes it contact with the lower movable contact to realize a preset signal; continue to press the upper movable contact until the lower movable contact contacts with the central fixed contact to realize another preset signal.

However, the second peripheral fixed contact of the above-mentioned two-stage push switch is set higher than the first peripheral fixed contact, and their welding parts are in the same plane; so that the punching of the central fixed contact, the first peripheral fixed contact and the second peripheral fixed contact The punching needs to be completed with two sets of molds, which cannot reduce the cost of manufacturing this type of push switch, and when the first peripheral fixed contact and the second peripheral fixed contact are placed in the mold and the insulating body is injected, they must be placed separately and the coplanarity of the welding part It is not easy to adjust, the manufacturing process is complicated, and the risk of failure is high.

【Content of utility model】

The purpose of the utility model is to provide a push switch which can reduce the manufacturing cost, simplify the manufacturing procedure and reduce the risk of failure.

In order to achieve the above object, the push switch of the utility model includes an insulating body, a fixed contact integrally formed with the insulating body, a first movable contact piece and a second movable contact piece installed on the insulating body, and a second movable contact piece arranged on the second movable contact piece. The film above the contact piece and the shielding shell that fixes the first and second movable contact pieces and the film in the insulating body, the fixed contact includes a central fixed contact, a first peripheral fixed contact located outside the central fixed contact and configuration A pair of second peripheral fixed contacts arranged outside and higher than the first peripheral fixed contact; wherein the second connection part extends from the end of the first peripheral fixed contact and is embedded in the insulating body, and the bending part extends from the second peripheral fixed contact. The connecting portion extends and is located vertically below it, and is punched from one side of the second peripheral fixed contact to form a drop portion, and the third connecting portion connects the two drop portions and is located on the same plane as the bending portion.

Compared with the prior art, the push switch of the utility model extends from the second connecting part through the bending part and is arranged in parallel vertically below it, so that the punching of the central fixed contact, the first peripheral fixed contact, and the second peripheral fixed contact It can be completed with a set of molds, and the punched fixed contacts can be put into the mold of the injection insulator body only once, compared with the existing two-stage push switch fixed contacts, which need at least two sets of molds to be punched and put in respectively. Compared with the injection mold, it can not only reduce the manufacturing cost and simplify the manufacturing process, but also the fixed joints put into the injection mold at one time will not have the trouble of difficult adjustment of the coplanarity of the welding part, reducing the risk of defective manufacturing.

【Description of drawings】

Fig. 1 is a three-dimensional exploded view of the push switch of the present invention.

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

FIG. 3 is an explanatory diagram of a state when the push switch shown in FIG. 1 is not operated.

Fig. 4 is an enlarged view of the fixed contact of the push switch shown in Fig. 1 .

【Detailed ways】

The specific implementation manner of the push switch 100 of the present invention will be described in detail below in conjunction with the accompanying drawings.

Please refer to Figures 1 to 4, the push switch 100 of the present invention includes an insulating body 2, a fixed contact 3 integrally formed with the insulating body 2, a first movable contact piece 4 and a second movable contact mounted on the insulating body 2 The sheet 5 , the film 7 arranged above the second movable contact piece 5 , and the shielding case 8 for fixing the first and second movable contact pieces 4 , 5 and the film 7 in the insulating body 2 .

The insulator body 2 is roughly square in shape, and its upper part is provided with an opening, so that it has a receiving portion 21 inside. , and connected with the base 211 and provided at the four corners of the accommodating portion 21 respectively with substantially square-shaped accommodating recesses 212 . A recessed portion 210 for accommodating the first movable contact piece 4 is disposed at the center of the base portion 211 , and several protrusions 213 surrounding the recessed portion 210 are also provided. At the center of a pair of opposite sides of the insulative body 2 are respectively provided with locking protrusions 22 , and at the center of the other opposite side is provided with a locking groove 23 . In addition, a positioning cylinder 24 is provided on the bottom surface of the insulating body 2 .

The fixed contact 3 includes a central fixed contact 31 protruding from the housing portion of the insulating body 2, a pair of first peripheral fixed contacts 32, and a pair of second peripheral fixed contacts 33 arranged outside the first peripheral fixed contacts 32 and higher than it. . The central fixed contact 31 is located at the center of the housing portion 21, and is connected to the first connecting portion 311 embedded in the insulating body 2 and the first welding portion 310 protruding from the bottom of the insulating body 2; the two first peripheral fixed contacts 32 are distributed on The outer side of the central fixed contact 31 is connected through the second connecting part 321 embedded in the insulating body 2, the bent part 322 extends from the second connecting part 321 and is located vertically below the second connecting part 321 and protrudes from the bottom of the insulating body 2. The second welding part 320 is connected; a pair of second peripheral fixed contacts 33 are exposed to the receiving recess 212 arranged diagonally on the insulating body 2, and a drop part 332 is punched from one side of the second peripheral fixed contacts 33, and the third The connecting part 331 connects the two drop parts 332 and is located on the same plane as the bent part 322. The third welding part 330 bends and extends downward from the outer periphery of the second peripheral fixed contact 33 and protrudes from the bottom of the insulating body 2. The drop part 332 and the third connecting portion 331 are embedded in the insulating body 2 . The central fixed contact 31, the first peripheral fixed contact 32, and the second peripheral fixed contact 33 of the above-mentioned structure can be punched out by a set of molds, and the first connecting portion 311 and the second connecting portion 321 are higher than the third connecting portion 331, The bent portion 322 is formed by bending from the second connecting portion 321 and the bent portion 322 .

The first movable contact piece 4 is arranged in a circular shape and placed in the recessed portion 210 of the insulating body, and includes a first central portion 41 located above the central fixed contact 31 in a dome shape. The peripheral portion of the first movable contact piece 4 is in contact with The first peripheral fixed contact 32 is in normal contact, and the protrusion 213 surrounding the recessed portion 210 is pushed down toward the peripheral portion of the first movable contact piece 4 by a tool (not shown), thereby restricting the first movable contact piece 4 Do not shake in the housing part 21.

The second movable contact piece 5 is located vertically above the first movable contact piece 4, and includes a dome-shaped second central portion 51, extending outward from the peripheral portion of the second movable contact piece 5 and placed in the corresponding receiving recess. The four wrists 52 of 212. The outer diameter between the arms 52 is formed to be larger than the outer diameter of the first movable contact piece 4 . A thin film 7 covering the upper surface of the second movable contact piece 5 is installed above the opening of the housing portion 21 of the insulating body 2 .

The shield case 8 is formed of a plate metal plate into a substantially square shape, and a window portion 81 is provided at the center thereof. In addition, among the four sides of the shielding housing 8, a pair of opposite sides corresponding to the buckle projection 22 extend vertically downward with a buckle portion 82, while the other pair of opposite sides corresponding to the locking groove portion 23 vertically extend downward with a The holding part 83. Install the shielding case 8 on the insulating body 2 , at this time, there is the above-mentioned film 7 between the shielding case 8 and the insulating body 2 , and the film 7 has a part of a pressable structure exposed from the window portion 81 .

During use, when the film 7 of the push switch 100 of the present invention is subjected to a downward pressure, the second central portion 51 of the second movable contact piece 5 located below the film 7 is pressed, so that the second central portion 51 appears elastic. In reverse, the second central portion 51 is in contact with the first central portion 41 of the first movable contact piece 4 to complete the first stage of switching operation. Pushing the second central portion 51 of the second movable contact piece 5 continues to elastically reverse, thereby pushing the first central portion 41 of the first movable contact piece 4 to also elastically reverse downward. Therefore, the first central part 41 of the first movable contact piece 4 after elastic inversion is in contact with the central fixed contact 31, so that the first movable contact piece 4 conducts with the above-mentioned central fixed contact 31, completing the second The segment switch operates.

When the pressing force to the push switch 100 of the present utility model is released, the first and second central parts 41, 51 of the above-mentioned first and second movable contact pieces 4, 5 carry out elastic reversal upwards with their own elastic force, and return to initial state.

Compared with the prior art, the push switch 100 of the present utility model has the bending part 322 extending from the second connecting part 321 and is arranged in parallel vertically below it, so that the central fixed contact 31, the first peripheral fixed contact 32, and the second The punching of the peripheral fixed contacts 33 can be completed with a set of molds, and the punched fixed contacts can be put into the mold of the injection insulating body only once, which requires at least two sets of the fixed contacts of the two-stage push switch in the prior art Putting the mold into the injection mold after punching can not only reduce the manufacturing cost and simplify the manufacturing process, but also put the fixed joints into the injection mold at one time without the problem of difficult adjustment of the coplanarity of the welded part, reducing the risk of defective manufacturing .

It should be pointed out that the above is only one embodiment of the sliding switch of the present invention. For those skilled in the art, other improvements made without departing from the principles of the present invention should also be regarded as the present invention. scope of protection.

Claims (5)

1. push switch, but but but comprise insulating body, with the integrated fixed contact of insulating body, first moving contacting plate that is installed in insulating body and second moving contacting plate, be located at the film of second moving contacting plate top and but first, second moving contacting plate and film be fixed in shielding casing in the insulating body, described fixed contact comprises central fixed contact, is positioned at the first peripheral fixed contact in the central fixed contact outside and is configured in the first peripheral fixed contact outside and be higher than a pair of second peripheral fixed contact of its setting; It is characterized in that: second connecting portion extends and is embedded in the insulating body from the end of the described first peripheral fixed contact, bending part is from the extension of second connecting portion and be positioned at its vertical lower, side blow system from the described second peripheral fixed contact forms fall-part, and the 3rd connecting portion connects two fall-parts and in the same plane with bending part.

2. push switch as claimed in claim 1 is characterized in that: but described insulating body is provided with the depressed part of placing first moving contacting plate, and some protuberances are around the depressed part setting.

3. push switch as claimed in claim 2 is characterized in that: but the periphery of described first moving contacting plate contacts with the first peripheral fixed contact normality.

4. push switch as claimed in claim 3 is characterized in that: but described second moving contacting plate comprises second central portion that is the dome shape, but four wrists stretch out from the edge of described second moving contacting plate, every two adjacent wrists at right angles distribute.

5. push switch as claimed in claim 4, it is characterized in that: the corner of described insulating body is respectively arranged with and is roughly the square recess of accommodating, the second peripheral fixed contact is protruding to be exposed to described the accommodating in the recess of diagonal angle setting of being, and accommodates in the recess but the wrist of second moving contacting plate is contained in.

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