CN201081807Y - Touch switch - Google Patents

Abstract

A light touch switch comprises an insulated main body provided with a holding space, a fixed terminal group held inside the holding space, a movable terminal arranged above the fixed terminal group, a press body butted with the movable terminal, and a cover body covering the insulated main body, wherein, the press body comprises a press part and a drive part arranged below the press part; a through hole to be penetrated by the press body and a tubular body vertically extending downwards from the edge below the through hole are arranged on the cover body, wherein, a groove corresponding to the tubular body is formed between the press body and the drive part, thus dust and foreign material can deposit in the groove, and are prevented from depositing into the contact area of the movable terminal and the fixed terminal.

Description

tact switch

【Technical field】

The utility model relates to a light touch switch, in particular to a light touch switch applied to electronic product equipment.

【Background technique】

A light touch switch usually includes an insulating body with a storage space, a fixed terminal group accommodated in the insulating body, a movable terminal installed above the fixed terminal group, a pressing body abutting against the movable terminal, and a cover on the insulating body. cover body. Among them, there is a through hole in the center of the cover body. Since there is a gap between the through hole and the pressing body, dust and foreign matter can easily fall from the gap and fall along the surface of the pressing body, and then move between the movable terminal and the fixed terminal. The deposition of the contact area affects the good electrical conduction of the tact switch.

In order to solve the above-mentioned problems, the usual practice in the industry is to set a baffle above the cover or cover the surface of the movable terminal with a dust-proof film. However, installing a baffle on the cover will increase the size of the tact switch, and if the surface of the movable terminal is covered with a dustproof film, there will still be dust and foreign matter that can fall into the fixed terminal and the fixed terminal from the gap between the movable terminal and the insulating body. The contact area of the movable terminal affects the conduction of the tact switch.

In view of the above disadvantages, it is necessary to provide an improved tact switch to overcome the above-mentioned defects of the tact switch.

【Content of utility model】

The purpose of the utility model is to provide a light touch switch with good dustproof effect.

The light touch switch of the utility model comprises an insulating body provided with a receiving space, a fixed terminal group accommodated in the insulating body, a movable terminal installed above the fixed terminal, a pressing body abutting against the movable terminal, and a cover on the insulating body The cover body, wherein the pressing body includes a pressing part and a driving part placed under the pressing part, and the cover body has a through hole through which the pressing part of the pressing body can penetrate and a tubular body extending vertically downward from the lower edge of the through hole, wherein : A groove corresponding to the tubular body is formed between the pressing body and the driving part.

Compared with the prior art, the pressing body of the light touch switch of the utility model is provided with a groove, and the cover is provided with a tubular body. Dust and foreign matters are deposited in the groove, which effectively improves the dustproof effect of the tact switch and has a simple structure.

【Description of drawings】

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

Fig. 2 is a three-dimensional exploded view of another angle of the tact switch of the present invention.

Fig. 3 is a three-dimensional assembled view of the tact switch of the present utility model.

Fig. 4 is a sectional view of the three-dimensional combined view of the tact switch of the present invention along the plane IV-IV of Fig. 3 .

【Detailed ways】

Please refer to Figures 1 to 4, the utility model tact switch 100 includes an insulating body 1 with a housing space 10, a fixed terminal group 5 accommodated in the insulating body 1, and a movable terminal mounted on the top of the fixed terminal group 5. The terminal 4 , the pressing body 3 abutting against the movable terminal 4 , and the cover 2 covering the insulating body 1 to fix the movable terminal 4 and the pressing body 3 .

The insulating body 1 is composed of a bottom wall 103 and a side wall 104 extending upward from the bottom wall 103 , wherein the bottom wall 103 and the side wall 104 surround and form a receiving space 10 for accommodating the movable terminal 4 and the pressing body 3 . The four corners of the receiving space 10 are respectively provided with protruding blocks 101 , and the protruding blocks 101 are provided with arc-shaped surfaces 102 , and the arc-shaped surfaces 102 are all on the same circle. The insulating body 1 is provided with an upper surface 11 . The upper surface 11 has cylindrical positioning columns 12 protruding upwards near the four corners respectively, so as to cooperate with the cover body 2 .

The cover body 2 is a square sheet adapted to the upper surface 11 of the insulating body 1 . The center of the cover body 2 is provided with a circular through hole 20 through which the pressing body 3 penetrates, and a tubular body 21 vertically extends from the lower edge of the through hole 20 . The cover body 2 is provided with a circular positioning hole 22 corresponding to the positioning post 12 on the upper surface 11 of the insulating body 1 to cooperate with the positioning post 12 .

The pressing body 3 includes a cylindrical pressing portion 30 and a disc-shaped driving portion 31 placed under the pressing portion. Wherein, a groove 300 corresponding to the tubular body 21 of the cover body 2 is formed between the pressing part 30 and the driving part 31, so that when dust and foreign matter fall from the gap between the cover body 2 and the pressing body 3, they can fall directly. into the above-mentioned groove 300 instead of being accumulated at the movable terminal 4 and the fixed terminal group 5 .

The movable terminal 4 is a dome-shaped metal shrapnel, which is consistent with the size of the circle where the arc-shaped surface 102 in the accommodation space 10 of the insulating body 1 is located. The edge of the movable terminal 4 is closely matched with the arc-shaped surface 102, so that the movable terminal 4 is tightly installed in the receiving space 10 .

The fixed terminal group 5 is divided into a moving contact terminal 51 and a static contact terminal 52 . The contact portion between the movable contact terminal 51 and the movable terminal 4 elastically deforms downward after being stressed is the movable contact area 510 . The overlapping portion of the static contact terminal 52 and the edge of the movable terminal 4 is an overlapping area 520 .

As shown in Figure 3, when assembling, the movable contact terminal 51 and the static contact terminal 52 are injection-molded on the bottom of the insulating body 1, and the movable terminal 4 is first placed in the housing space 10 of the insulating body 1. At this time, the static contact terminal The overlapping area 520 of 52 is in contact with the edge of the movable terminal 4 . Then, the pressing body 3 is installed in the accommodation space 10 of the insulating body 1 , and at this time, the driving portion 31 of the pressing body 3 abuts against the movable terminal 4 . Finally, cover the cover body 2 on the insulating body 1, the positioning hole 22 of the cover body 2 is fixed to the positioning post 12 on the upper surface 11 of the insulating body 1, the through hole 20 in the center of the cover body 2 and the pressing part 30 of the pressing body 3 By cooperating with each other, the pressing body 3 and the movable terminal 4 are fixed in the receiving space 10 of the insulating body 1 . The assembled connector is shown in Figure 3.

In this embodiment, the through hole 20 in the center of the cover body 2 has a tubular body 21 extending downward, and the pressing body 3 is provided with a groove 300 corresponding to the tubular body 21 of the cover body 2, so that dust and foreign matter will be in the concave The deposition in the groove 300 prevents the deposition to the contact area of the movable terminal 4 and the fixed terminal group 5 .

The above is only one embodiment of the utility model, not all or the only implementation. Any equivalent change to the technical solution of the utility model adopted by those of ordinary skill in the art by reading the specification of the utility model shall be considered as the present invention. covered by the claims of the utility model.

Claims (5)

1. touch-switch, comprise the insulating body that is provided with receiving space, be contained in the fixed terminal group in the insulating body, the movable terminal that is installed on fixed terminal group top, the pressing body of butt movable terminal, and be placed on lid on the insulating body, wherein, pressing body comprises the press section and places the drive division of below, press section, lid is provided with and can reaches the tubular body that is extended by the through hole lower edge downwards for the through hole that the pressing body press section is run through, and it is characterized in that: form and the tubular body corresponding grooves between pressing body and the drive division.

2. touch-switch as claimed in claim 1 is characterized in that: described pressing body press section is a column.

3. touch-switch as claimed in claim 2 is characterized in that: described insulating body upper surface is provided with reference column, and lid is provided with the location hole with this reference column fixing.

4. touch-switch as claimed in claim 3 is characterized in that: described insulating body is square, and the receiving space inwall is respectively equipped with projection in four corners of insulating body correspondence.

5. touch-switch as claimed in claim 4 is characterized in that: described movable terminal is vaulted metal clips, and projection is provided with the curved surfaces that matches with movable terminal.

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