CN101740249B

CN101740249B - Button switch

Info

Publication number: CN101740249B
Application number: CN2008103057167A
Authority: CN
Inventors: 孙亮; 吴标
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2008-11-25
Filing date: 2008-11-25
Publication date: 2012-05-23
Anticipated expiration: 2028-11-25
Also published as: CN101740249A

Abstract

The invention relates to a button switch, comprising an insulating body, a fixed terminal, a first movable contact piece and a second movable contact piece, wherein the insulating body is provided with a containing cavity, the fixed terminal is integrated with the insulating body, and the first movable contact piece and the second movable piece are separately assembled in the containing cavity. A first step is arranged in the containing cavity of the insulating body so that the second movable contact piece can be erected above the first movable contact piece and separated from the first movable contact piece. The second movable contact piece comprises a support part abutting against the first step, a second pressing part and a wrist part for connecting the support part and the second pressing part, wherein the first step undercuts along a direction far away from the wrist part to form a second step, and the second step is positioned just below the wrist part, thereby the second movable contact piece is hung in the air all the time in a normal state and when the second movable contact piece is pressed to move.

Description

Push-button switch

[technical field]

The invention relates to a kind of push-button switch, relate in particular to the push-button switch on a kind of guidance panel that is used for various electronic installations.

[background technology]

Along with the fast development of electronic industry, as the push-button switch of electronic product common part, obtained significant progress, the push-button switch that uses on the existing market in order to adapt to the continuous development of industry, need be made improvement constantly.A kind of push-button switch on the market now for example; Comprise insulating body; It has the box-shaped of opening for the top; But but have sidewall, diapire and the host cavity that surrounds jointly by sidewall and diapire, be loaded on first movable contact spring and second movable contact spring in the resettlement section with the integrated fixed terminal of insulating body, discrete group; But first step is set but second movable contact spring is set up in the top of the relative diapire of first movable contact spring in the host cavity of insulating body, but second movable contact spring comprises first support portion, second press section that is connected on this first step and the wrist that connects this first support portion and second press section.In practical application, push for the first time second press section to diapire near the time, second press section contacts with first press section, at this moment, wrist just abuts on the first step; Push for the second time second press section drive first press section together to diapire near the time, first support portion is a fulcrum and perk is broken off with fixed terminal, the on-off action inefficacy with wrist and first step butt place; Moreover when pushing for the second time, the certain strength of consumer wants could continue to depress, or thinks residing position when can only be pressed into the first time pushes, and brings very big inconvenience to the consumer, because of its feel difference influences result of use.

Given this; But being necessary the wrist that provides a kind of novel push button switch to solve first movable contact spring to abut to first step and causing first support portion is fulcrum and perk with wrist and first step butt place; Break off with fixed terminal, on-off action lost efficacy and occurred pushing the problem of feel difference because of wrist butt first step.

[summary of the invention]

Therefore; But the technical problem that the present invention will solve is the wrist of first movable contact spring to be abutted to first step and cause first support portion is fulcrum and perk with wrist and first step butt place; Break off with fixed terminal, on-off action lost efficacy and occurred pushing the problem of feel difference because of wrist butt first step.

Push-button switch of the present invention; But but comprise the insulating body that is provided with host cavity, be loaded on first movable contact spring and second movable contact spring in the host cavity with the integrated fixed terminal of this insulating body, discrete group; But second movable contact spring is set up in and first movable contact spring top separately but first step is set in the host cavity of insulating body; But second movable contact spring comprises support portion, second press section that is connected on this first step and connects this support portion and the wrist of second press section; Wherein, First step has second step to the direction incision away from wrist, this second step be positioned at wrist under, but but make second movable contact spring unsettled all the time when pushing the running of this second movable contact spring in normality.

Compared with prior art, the insulating body of push-button switch of the present invention is provided with second step, and the wrist of the second movable place sheet is built on stilts, the phenomenon that wrist and second step connect can not occur but push second movable contact spring for twice.Causing first support portion is fulcrum and perk so but the wrist that push-button switch of the present invention can effectively solve first movable contact spring abuts to first step with wrist and first step butt place; Break off with fixed terminal, on-off action lost efficacy and occurred pushing the problem of feel difference because of wrist butt first step.

[description of drawings]

Fig. 1 is the stereogram of push-button switch of the present invention;

Fig. 2 is the three-dimensional exploded view of push-button switch of the present invention;

But Fig. 3 is the stereogram of second movable contact spring of push-button switch of the present invention;

Fig. 4 is the stereogram of the insulating body of push-button switch of the present invention;

Fig. 5 be Fig. 1 along A-A to cutaway view;

Fig. 6 is the first stroke sketch map of push-button switch of the present invention;

Fig. 7 is the second stroke sketch map of push-button switch of the present invention.

[embodiment]

Please referring to figs. 1 through shown in Figure 6; Push-button switch 100 of the present invention, but but its bag insulating body 1, be loaded on first movable contact spring 4 and second movable contact spring 2 in the host cavity 12 with the integrated fixed terminal of insulating body 13, discrete group, be installed in that said insulating body 1 top covers the dustproof film 5 of whole host cavity 12 and the film 5 that will prevent dust is fixed in the housing 6 on the insulating body 1.

Please be especially with reference to shown in Figure 3; Insulating body 1; It has the box-shaped of opening for top 10, the host cavity 12 that has sidewall 13, diapire 11 and surround jointly by sidewall 13 and diapire 11, and the host cavity 12 of insulating body 1 also is included on the sidewall 13 and has cut first accepting groove 120 by top 10 to first step 14 to host cavity 12; This first accepting groove 120 is accommodated above-mentioned first support portion 23 and second support portion 21, but restriction second movable contact spring 2 rotates; On sidewall 13, cut second accepting groove 121 by top 10 to diapire 11, but this second accepting groove 121 is accommodated the banking stop 42 of above-mentioned first movable contact spring 4, but restriction first movable contact spring 4 rotates to host cavity 12; But but the top that first step 14 is set up in second movable contact spring 2 first movable contact spring, 4 relative diapires 11 is set in the host cavity 12 of insulating body 1; But there are second step the 3rd step 16, first, second,

third steps

14,15,16 stepped orders wrist 22 is built on stilts and that shelve first movable contact spring 4 to be provided with to host cavity 12 along the direction incision of vertical diapire 11 to diapire 11 by first step 14.

Please be especially with reference to shown in Figure 4; But second movable contact spring 2 comprises the wrist 22 that is connected to first support portion 23, second press section 20 on this first step 14 and connects this first support portion 23 and second press section 20; But the wrist 22 of second movable contact spring 2 is the periphery of cross distribution in second press section 20, and wrist 22 is tabular; Connect half moon first support portion 23 on the wherein a pair of relative wrist 22 respectively; A pair of this first support portion 23 encircles second press section 20 in opposite directions; First support portion 23 often contacts fixed terminal 3; Another stretches out to wrist 22 is second support portion 21, sets up second movable contact spring 2 on the first step 14 but second support portion 21 and first support portion 23 are connected to, and second press section 20 is suspended in the host cavity 12; First support portion 23 is provided with the contact point 231 of convex closure shape, is communicated with in the 3rd terminal excellent electrical property but help second movable contact spring 2; Second press section 20 is domed, with first press section, 40 sequence arrangement be positioned at second contact site 320 directly over.

But first movable contact spring 4 comprise with fixed terminal 3 in second terminal, 32 normalities separate first press section 40 that is domed, the edge part 41 that often contacts with the first terminal 31 in the fixed terminal 3 and by the edge part 41 protruding banking stops 42 that are assembled in second accepting groove 121, extend second limiting section 421 that restriction first movable contact spring 4 moves up and down but banking stop 42 comprises first limiting section 420 of adjoining edge portion 41 with vertical first limiting section 420.

Comprise with this insulating body 1 integrated fixed terminal 3: but first contact site 310 that protrudes out insulating body 1 diapire 11 and the first terminal 31 that often contacts with the edge part 41 of first movable contact spring 4 be provided with; But second terminal, 32, the second contact sites 320 that are provided with second contact site 320 of the diapire 11 that protrudes out this insulating body 1 and separate with first press section, 40 normalities of first movable contact spring 4 are stretched out by the central authorities of the diapire 11 of insulating body 1; But be provided with the 3rd contact site 330 of the first step 14 that protrudes out insulating body 1 and the 3rd terminal 33 that often contacts with second contact site 320 of second movable contact spring 2.31,32,33 separation of first, second, third terminal take shape in the insulating body 1.

During assembling, one-body moldedly have the host cavity 12 of the insulating body 1 of fixed terminal 3 to be shelved on the 3rd step 16 but first movable contact spring 4 put into, its banking stop 42 is contained in second accepting groove 121; Again but second movable contact spring 2 is put into the host cavity 12 of insulating body 1, made first, second support portion 21 be shelved on the first step 14 and be contained in first accepting groove 120, but the wrist 22 of second movable contact spring 2 is suspended on the second step; The film 5 that then will prevent dust covers the top 10 at insulating body 1; At last housing 6 is fastened on the insulating body 1.

This type of push-button switch 100 electrically connects the needs that life is satisfied in two kinds of different electric connections through the first terminal 31 with the electric connection and first, second,

third terminal

31,32,33 of the 3rd terminal 33 simultaneously in electronic product.Use, but second movable contact spring 2 pushed for the first time, but being moved with first movable contact spring 4 to diapire 11, it contacts, realize first kind and electrically conduct; But continue to push second movable contact spring 2 for the second time, contact with second terminal 32, realize second kind and electrically conduct but be depressed into first movable contact spring 4.Because but first, second

movable contact spring

4,2 is the elastic conduction thin slice, so, but when the pressure that removes on second movable contact spring 2, but first, second

movable contact spring

4,2 can bounce back into initial position, breaks off electrically connecting.In the process of pushing, but elastic deformation also can take place in the wrist 22 of second movable contact spring 2, and second press section 20 is tie point distorted movement about the horizontal plane at

first support portion

23 and 21 places, second support portion with wrist 22.

Claims

1. push-button switch; But but comprise the insulating body that is provided with host cavity, be loaded on first movable contact spring and second movable contact spring in this host cavity with the integrated fixed terminal of this insulating body, discrete group; But second movable contact spring is set up in and first movable contact spring top separately but first step is set in the host cavity of said insulating body; But said second movable contact spring comprises support portion, second press section that is connected on this first step and connects this support portion and the wrist of second press section; It is characterized in that: said first step has second step to the direction incision away from wrist; This second step be positioned at wrist under, but but make said second movable contact spring unsettled all the time when pushing the running of this second movable contact spring in normality.

2. push-button switch as claimed in claim 1; It is characterized in that: said support portion comprises a pair of half moon first support portion; A pair of this first support portion encircles said second press section in opposite directions, and this first support portion is provided with the contact point that often contacts said fixed terminal.

3. push-button switch as claimed in claim 2; It is characterized in that: but the wrist of said second movable contact spring is the periphery of cross distribution in said second press section; A pair of wrist stretches out and forms second support portion, sets up second movable contact spring but said first support portion and second support portion are connected on the said first step.

4. push-button switch as claimed in claim 3 is characterized in that: but said first movable contact spring comprises the edge part that separates first press section that is domed with said fixed terminal normality, often contact with fixed terminal and by the outwardly directed banking stop of this edge part.

5. push-button switch as claimed in claim 4 is characterized in that: the host cavity of said insulating body also comprises: accommodate first accepting groove of said first support portion and second support portion, but restriction second movable contact spring rotates; Accommodate second accepting groove of said banking stop, but restriction first movable contact spring rotates; But shelve the 3rd step of first movable contact spring.

6. push-button switch as claimed in claim 5 is characterized in that: but but but said fixed terminal comprise be provided with first contact site that protrudes out this insulating body and the first terminal that often contacts with the edge part of said first movable contact spring, be provided with second contact site that protrudes out this insulating body and second terminal that separates with the first press section normality of said first movable contact spring, the 3rd contact site that is provided with the first step that protrudes out this insulating body and the 3rd terminal that often contacts with second contact site of said second movable contact spring.

7. push-button switch as claimed in claim 6 is characterized in that: said second press section is domed, second press section and above-mentioned first press section be positioned at second contact site directly over.

8. push-button switch as claimed in claim 7 is characterized in that: but said second movable contact spring when receiving downward pressing force, but contact with said first movable contact spring, this moment, said the first terminal and the 3rd terminal electrically conducted; But continue to push this second movable contact spring, but drive said first movable contact spring down in said second termination contact, this moment, this first terminal, second terminal and the 3rd terminal electrically conducted simultaneously.

9. push-button switch as claimed in claim 4 is characterized in that: extend second limiting section that said first movable contact spring of restriction moves up and down but said banking stop comprises first limiting section that connects said edge part with vertical first limiting section.

10. push-button switch as claimed in claim 1 is characterized in that: said push-button switch also comprises and is installed in the dustproof film that said insulating body top covers whole host cavity, and the film that will prevent dust is fixed in the housing on the insulating body.