CN2190320Y - Bridge type computer botton switch - Google Patents

Abstract

The utility model relates to a bridge type computer key switch, particularly for the key switch making use of the linking bridge for keeping the stability of a key cap and lowering height, which comprises a key cap, a bridge, a bridge plate, a key ring plate, and a base plate. The bridge is formed by the cross linking of a column frame and a tenon frame in the return movement state. The upper side of the bridge is connected with the key cap, and the lower side of the bridge is connected with the bridge plate. The cap column of the key cap corresponds to the key ring. When the key cap is pressed, the up and down movement is formed parallel to a plane in virtue of the linking of the bridge for avoiding general input errors.

Description

Bridge type computer botton switch

Computing machine has been indispensable instrument in the life at present, because it has high efficiency information processing and storage capacity, thus be subjected to industrial and commercial circles and individual user's popular welcome, and be popularized for school and family, for people's life brings a lot of convenience.

The input of computing machine, the most general with keyboard, this mode of operation of getting off of following by typewriter, so far still can't change, so, although also have other for example multiple input tool such as pen type input or phonetic entry, but can not dare not or would not speak up, keyboard entry method is still the most general a kind of.

On the other hand, along with electronic component dwindles day by day, the volume of computing machine " light, thin, short, little " is also day by day changed, so that have so-called on knee, notebook type even palm medium-size computer to release one after another, makes computer application to have more maneuverability.

In order to adapt to the demand of this trend and coupled computer miniaturization, computer keyboard is also made every effort to thinning, also the height that is about to keyswitch dwindles as far as possible, so that the thickness of portable computing machine reduces, therefore, in recent years, the exploitation on the computing machine keyswitch, finding is arranged more, also be no lack of patent granted.

All operational computations switch dish persons all know, known keyboard, comprise a keycap, its bottom center has a key post and pushes conductive rubber, and conductive rubber and thin film circuit are connected, in order to transmitting signals, and when quick key entry (Key-in), sometimes owing to only by the edge or the side angle that reach keycap, the key post can't be pressed down, cause and to connect circuit, and cause the input error.

Except the shortcoming of this positioning stablity deficiency, known keyswitch often needs make keycap recoil to original position with a spring is set, and often causing on the height can't attenuation because of this spring, becomes problem extremely to be overcome.

In view of this, the applicant is based on the experience of being engaged in the computer keyboard design all the year round, creates bridge formation formula computing machine keyswitch of the present utility model.

The purpose of this utility model provides a kind of bridge formation formula computing machine keyswitch, to be intersected the bridge formation structure that links by post frame and tenon frame, replaces spring structure, the button height is reduced, and eliminated the shortcoming of input error.

The basic structure of the utility model keyswitch comprises:

One keycap is a cap body, and its oblique cap central interior of down extending is down extended a cap post; Below homonymy inwall extends the paste of two levels, and side is then down extended two hatpins in the cap top, its central tool one groove in addition; Extend the two cap ribs parallel corresponding to paste cap inner top one with paste;

One builds bridge, and intersects the state that can reverse each other that links by a post frame and a tenon frame; Two parallel mast ends of post frame are circular styletable, and central authorities are each tool one post hole then, form framework by two parallel post tenons bindings between two masts, and the upper prop tenon is embedded in the groove; The tenon frame also is a framework, and tenon rod end place, both sides is circular tenon end, the outwards vertical tenon axle that extends of its central authorities, and the tenon axle is placed in paste and cap intercostal; In addition a tenon core is respectively extended in tenon bar mediad inboard, but and embedding be through at the post hole; Having two parallel tenon beam one between two tenon bars links to surround framework;

One bridge plate is a plate body, and it opens plate hole corresponding to the keyswitch place, and corresponding to tenon axle place, below, and it is prominent and open board slot and wear for its embedding vertically to form plate; Corresponding to following square column tenon place, the plate hook of projection turnover is ccontaining for it in addition;

One key ring flat-plate is soft elastic material, corresponding to each cap post place, dashes forward and establishes a key ring, and its inside top surface is a salient point;

One thin film circuit has circuit junction corresponding to each salient point place;

One base plate is a plate body, links fixing described bridge plate, key ring flat-plate and thin film circuit.

For further pointing out concrete technology contents of the present utility model, below in conjunction with description of drawings the utility model embodiment.

Fig. 1 is a three-dimensional exploded view of the present utility model;

Fig. 2 is the synoptic diagram of the utility model keycap by bottom perspective;

Fig. 3 is the utility model assembling back sectional drawing.

As shown in the figure, basically, the utility model is combined by a keycap 1, a bridge formation 2, one bridge plate 3, a key ring plate 4, a thin film circuit 5 and a base plate 6.

Wherein, the cap body that keycap 1 is formed in one, as shown in Figure 2, its the top be top tool concave arc and to four skew backs to the extension cap 11, a cap post 12 down extends in bottom surface central authorities, a side inwall one is extended the paste 13 of two levels below cap 11 in addition, side is then down extended two hatpins 14 in the top of cap 11 in addition, and its central authorities have circle and the less groove 141 of opening, for making cap 11 be able to parallel with paste 13, so, be wholely set two cap ribs 15 in cap 11 inner face tops corresponding to paste 13.

Build bridge 2, is intersected with a tenon frame 22 by a post frame 21 and link, wherein, post frame 21 comprises two parallel masts 211, and its end is the styletable 212 of circle, and other then respectively offers a post hole 213 in the central authorities of mast 211, for tenon frame 22 fits.And the end of two masts 211, that is between two styletables 212, have the post of binding tenon 214, and its external diameter is corresponding to the groove 141 of aforementioned hatpin 14, and post tenon 214 is placed in the groove 141, and is the state that can reverse, so that post frame 21 forms the frame shape.

Tenon frame 22 also is a framework, comprises the tenon bar 221 of both sides, and each forms circular tenon end 222 its end, and the mediad two outside vertical extension rod axles 223 of tenon end 222, its external diameter are corresponding to board slot 321 described later, wears in it and is the state that can reverse with embedding.Again in the central authorities of tenon bar 221, respectively extend a bar core 224 to the inside, its size is corresponding to aforesaid post hole 213, for being the state that to reverse after chimeric, and between the two tenon bars 221, have two parallel vertical bar tenon beams 225 respectively and be one and link, strengthening its stress, and tenon frame 22 can be enclosed the composition framework.

Bridge plate 3 is a plate body, corresponding to the keyswitch place, opens plate hole 31; And corresponding to tenon axle 223 places of tenon frame 22 belows, then vertically form plate prominent 32 and open board slot 321, wear for its embedding; Corresponding to post tenon 214 places of post frame 21 belows, also the plate hook 33 of projection one turnover also can slide so that post tenon 214 is placed in the plate hook 33 in addition.

Key ring plate 4 is known soft board, usually be good with elastic silicone rubber, its corresponding each keyswitch place, dash forward and establish a key ring 41, these key ring 41 belows are horn-like, and the inner face top can be the salient point of conduction or non-conductive (demand on thin film circuit 5 is decided) material, so that it is when being subjected to pushing, salient point is touched the circuit junction 51 of below thin film circuit 5 and is formed path, to produce signal (this is a known techniques, also is the principle of work of current thin film formula); And among the embodiment of the present utility model, but the 4 full wafer settings of key ring plate, or with 41 single settings of key ring, to adapt to the different keyswitches of arranging (ALIGNMENT).

Thin film circuit 5 also is a known techniques, is the circuit of a film like, and in corresponding to each keyswitch place, circuit junction 51 then is set for corresponding with the salient point in the aforesaid key ring 41.

Base plate 6 also is known thin plate, and its function is to link above-mentioned bridge plate 3, key ring plate 4 and thin film circuit 5 for assembling, makes the keyboard that becomes whole piece.

Please consult Fig. 3 again, when the utility model is assembled, at first with after bridge plate 3, key ring plate 4, thin film circuit 5 and base plate 6 combination and fixing, its key ring 41 protrudes on the plate hole 31, post tenon 214 with post frame 21 belows hooks together in plate hook 33 again, bar axle 223 embeddings of tenon bar 221 belows penetrate in the board slot 321, and the bar axle 223 of top is inserted between the paste 13 and cap rib 15 of keycap 1, post tenon 214 embeddings of post frame 21 tops simultaneously penetrate in the groove 141 of hatpin 14, promptly finish assembling, and this moment, cap post 12 is aligned with key ring 41.

Please consult Fig. 3 again, the utility model is when actual act, when pushing keycap 1, keycap 1 promptly descends and makes cap post 12 compressing key rings 41, wherein build bridge 2 with the action relationships of keycap 1 and bridge plate 3, the tenon axle 223 that is tenon frame 22 belows is axially in board slot 321 and reverses, and the tenon axle 223 of top is to be sliding state at cap rib 15 and 13 of pastes; And the post tenon 214 of post frame 21 belows slides in plate hook 33, and the post tenon 214 of top is to reverse in hook groove 141 in addition; When pushing keycap 1, the tenon axle 223 of below is the stationary state that axially reverses in board slot 321, the tenon axle 223 of its top is except that having slide action, move down in addition, simultaneously the post tenon 214 of top except that have axially reverse, also have downward, the polyphone post frame 21 and the post hole 213 of tenon frame 22 are also moved down with tenon core 224, make the salient point in the key ring 41 impel the circuit junction 51 of thin film circuit 5 to connect, make signal transmitted, after pushing end, then the elastic reaction of mat key ring 41 makes bridge formation 2 and keycap 1 involution original position.

So, when when operation, 2 be linked to bridge plate 3 and 1 of keycap at 8, and bridge plate 3 and base plate 6 are to link fixingly, so locate firmly, can not produce offset owing to build bridge.

Bridge formation 2 is to be intersected with tenon frame 22 by post frame 21 to link, so it is in any one application of force, all can move up and down because of its interlock makes keycap 1 plane be parastate, so can exempt the situation of pushing error.

Into person is arranged especially,, see through the intersection gradient design of the utility model bridge formation 2, can effectively reduce the height of whole keyswitch owing to the inevitable height of exempting known spring.

For reducing cost and boosting productivity, key ring flat-plate 4 of the present utility model can not adopt one-body molded mode, and is assembling with each single independently key ring 41, also can reach identical effect.

Claims (2)

1, a kind of bridge formation formula computing machine keyswitch is characterized in that:

One keycap is a cap body, and its oblique cap central interior of down extending is down extended a cap post; Below homonymy inwall extends the paste of two levels, and side is then down extended two hatpins in the cap top, its central tool one groove in addition; Extend the two cap ribs parallel corresponding to paste cap inner top one with paste;

One builds bridge, and intersects the state that can reverse each other that links by a post frame and a tenon frame; Two parallel mast ends of post frame are circular styletable, and central authorities are each tool one post hole then, form framework by two parallel post tenons bindings between two masts, and the upper prop tenon is embedded in the groove; The tenon frame also is a framework, and tenon rod end place, both sides is circular tenon end, the outwards vertical tenon axle that extends of its central authorities, and the tenon axle is placed in paste in the cap intercostal; In addition a tenon core is respectively extended in tenon bar mediad inboard, but and embedding be through at the post hole; Having two parallel tenon beam one between two tenon bars links to surround framework;

One bridge plate is a plate body, and it opens plate hole corresponding to the keyswitch place, and corresponding to tenon axle place, below, and it is prominent and open board slot and wear for its embedding vertically to form plate; Corresponding to following square column tenon place, the plate hook of projection turnover is ccontaining for it in addition;

One key ring flat-plate is soft elastic material, corresponding to each cap post place, dashes forward and establishes a key ring, and its inside top surface is a salient point;

One thin film circuit has circuit junction corresponding to each salient point place;

One base plate is a plate body, links fixing described bridge plate, key ring flat-plate and thin film circuit.

2, bridge formation formula computing machine keyswitch as claimed in claim 1, but it is characterized in that described key ring full wafer is arranged to the key ring plate, or make single key ring.

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