CN2395378Y

CN2395378Y - Button switch for keyboard

Info

Publication number: CN2395378Y
Application number: CN 99243412
Authority: CN
Inventors: 陈文宗
Original assignee: FUYA ELECTRONIC Co Ltd XIAMEN CITY
Current assignee: FUYA ELECTRONIC Co Ltd XIAMEN CITY
Priority date: 1999-09-17
Filing date: 1999-09-17
Publication date: 2000-09-06
Anticipated expiration: 2009-09-17

Abstract

The utility model discloses a key switch for a keyboard, mainly assembled by movable contact pieces arranged in upper and lower bases, fixed contact pieces, a press block, a spring and an elastic piece. Each movable contact piece comprises an elastic contact piece and a hard foot, and contact points are formed on the fixed contact pieces. Each elastic contact piece is connected by big and small frame bodies which form an included angle, and the small frame body extends inward and forms an antenna from the connecting position of the big and small frame bodies. The antenna inclines toward the side of the big frame body and forms an included angle with the small frame body, contact points corresponding to the contact points on the fixed contact pieces are formed on the antenna, and the hard feet form L-shaped structures. The utility model has the advantages of simple processing technology and low cost.

Description

A kind of keyboard switch

The utility model relates to a kind of keyboard switch, and is relevant with the structural improvement of movable contact flat in the keyboard switch especially.

In the prior art, the structure of computer or game machine keyboard switch is mainly assembled by the movable contact flat 3, fixed touch plate 4, briquetting 5, spring 6, the shell fragment 7 that are arranged in the upper and lower pedestal 1,2 as shown in Figure 4.

Wherein, movable contact flat 3 comprises elastic contact blade 31 and hard 32 two parts of pin, and this elastic contact blade 31 is an arc-shaped spring piece, and for easy to process, elastic contact blade 31 and hard pin 32 employing usually divide body formed.Form two or three contacts 311 on the elastic contact blade 31; The contact 41 that also forms corresponding number on the fixed touch plate 4 is corresponding with it.

This keyboard switch, though have the characteristics of " long service life, good reliability ", but because of elastic contact blade 31---the bending of arc-shaped spring piece system forms, and on the hard pin 32 "] " type structure 321 (be used for the location and be arranged on upper pedestal 1) need secondary punch forming, so processing technology is comparatively complicated, difficulty is big, the cost height.

The purpose of this utility model is to provide a kind of keyboard switch, and its processing technology is simple, and cost is low.

For achieving the above object, the utility model is still mainly assembled by the movable contact flat, fixed touch plate, briquetting, spring, the shell fragment that are arranged in the upper and lower pedestal.Wherein, movable contact flat comprises elastic contact blade and hard two parts of pin, forms two to three contacts on the fixed touch plate.Elastic contact blade is linked by large and small two frameworks that are angle mutually, and little framework is extended internally by the two junction and forms two to three feelers, feeler is an angle to big framework lopsidedness with little framework, forms and the corresponding contact of fixed touch plate upper contact on the feeler; Then form on the hard pin

The type structure.

After adopting said structure, elastic contact blade of the present utility model can directly be washed into two large and small frameworks that are angle mutually, link mutually by a square sheet, and directly be washed into the feeler that extends out by on the little framework, make it to be an angle to big framework lopsidedness and little framework, it is corresponding with the fixed touch plate upper contact directly to be washed into simultaneously the contact on feeler, be that whole elastic contact blade can form in a punching out, and do not need the complicated processing technology that for example bends; On the hard pin

The type structure also only needs a punching press promptly plastic; So the utility model is simplified its processing technology because of the architecture advances of elastic contact blade in the movable contact flat and hard two parts of pin, cost reduces.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the utility model movable contact flat three-dimensional structure diagram;

Fig. 2 is the utility model three-dimensional exploded view;

Fig. 3 is the utility model assembling back plane cut-away view;

Fig. 4 commonly uses the product three-dimensional exploded view.

Consult Fig. 1,2, the utility model is still mainly assembled by the movable contact flat 3, fixed touch plate 4, briquetting 5, spring 6, the shell fragment 7 that are arranged in the upper and lower pedestal 1,2.

Wherein, movable contact flat 3 comprises elastic contact blade 31 and hard 32 two parts of pin.Elastic contact blade 31 is directly to be washed into large and small two frameworks 312,313 that are angle mutually, link mutually by a square sheet, (number of the number of feeler 314 and contact 315 is relevant for two feelers 314 by extending internally with big framework 312 junction for little framework 313, with two or three is the best, the reliability that this moment, button used is the strongest), feeler 314 is to big framework 312 lopsidedness, and be an angle with little framework 313, respectively form a contact 315 on each feeler 314.Then punching press formation on the hard pin 32

Type structure 322.

Form two contacts 41 on the fixed touch plate 4, corresponding with two contacts 315 of two feelers 314 on the elastic contact blade 31.

Seeing also Fig. 2,3 again, when the utility model uses, is by pushing briquetting 5, make little framework 313 that elastic deformations take place, and the contact 315 on the control feeler 314 contacts with the contact 41 on the fixed touch plate 4, thus the Push And Release of realization button.

The utility model can form elastic contact blade 31 owing to the architecture advances of elastic contact blade in the movable contact flat 3 31 and hard 32 two parts of pin in a punching out, on the hard pin 32

Type structure 322 also only needs a punching press promptly plastic; So the utility model processing technology is simplified, cost reduces.

Claims

1, a kind of keyboard switch is mainly assembled by the movable contact flat, fixed touch plate, briquetting, spring, the shell fragment that are arranged in the upper and lower pedestal; Movable contact flat comprises elastic contact blade and hard two parts of pin, forms the contact on the fixed touch plate; It is characterized in that: elastic contact blade is linked by large and small two frameworks that are angle mutually, and little framework is extended internally by the two junction and forms feeler, feeler is to big framework lopsidedness and be an angle with little framework, form and the corresponding contact of fixed touch plate upper contact on the feeler, then form on the hard pin The type structure.

2, a kind of keyboard switch as claimed in claim 1, it is characterized in that: the contact on the fixed touch plate is two to three, the feeler that extends to form in the little framework also is two to three, and it is corresponding with the fixed touch plate upper contact all to form a contact on each feeler.