CN202332601U

CN202332601U - Key

Info

Publication number: CN202332601U
Application number: CN 201120502556
Authority: CN
Inventors: 张清
Original assignee: Changshu Sunrex Technology Co Ltd
Current assignee: Changshu Sunrex Technology Co Ltd
Priority date: 2011-12-05
Filing date: 2011-12-05
Publication date: 2012-07-11
Anticipated expiration: 2021-12-05

Abstract

The utility model discloses a key, which comprises a metal bottom plate, a holding frame, a key cap and an elastic reset piece, wherein the holding frame and the metal bottom plate are connected with each other and used together to form an accommodation space; the key cap comprises a cap body which is protruded out of the holding frame and a cap edge which extends outwards from the bottom edge of the cap body; the elastic reset piece is arranged in the accommodation space and applies constant force to push the cap body away from the metal bottom plate; and the cap edge of the key cap is pressed against the holding frame to limit the key cap. The key has the advantages that: by using the holding frame and the metal bottom plate together, the processing cost of the metal bottom plate of the conventional key is reduced, and an integral structure is stable, so an assembly structure of another key is provided.

Description

Button

Technical field

The utility model relates to a kind of button, particularly relates to a kind of assembling simple key-press.

Background technology

Consult Fig. 1,2, existing button 1 is by a metal base plate 11, circuit board 12, an elastic reset spare 13, and a keycap of the confession pushing 14 assembles in regular turn.

This metal base plate 11 imposes die forming for example and has the patterned surfaces 111 of corresponding concaveconvex structure, in order to combine with this elastic reset spare 13.

This circuit board 12 is stacked and placed on this metal base plate 11, and has the scheduled circuit pattern of the design corresponding to the patterned surfaces 111 of this metal base plate 11.

This elastic reset spare 13 comprises a bracing frame 131 and an elastomer 132; This becomes the bracing frame 131 of shaped as frame to be the scissors pin lifting structure of convention; Two homonymy ends are connected on the patterned surfaces 111 of this keycap 14 and this metal base plate 11, make that this keycap 14 can be with respect to these metal base plate 11 upper and lower displacements; This elastomer 132 is to process with for example elastomeric material and have elastic-restoring force and be arranged between this circuit board 12 and this keycap 14; And when imposing this keycap 14 of pressed by external force; These elastomer 132 deformation of interlock and accumulate elastic-restoring force and contact this circuit board 12 simultaneously and pass out electric signal; After external force disappeared, this elastomer 132 discharged elastic-restoring force and pushes up to this keycap 14 away from this circuit board 12.

The shortcoming of existing button 1 is that this metal base plate 11 is in order to cooperate the setting of this elastic reset spare 13, bracing frame 131; And must be for example to go out to be installed with the patterned surfaces 111 of the concaveconvex structure of this bracing frame 131 with die forming; So except causing the problem that cost of manufacture can't reduce; Also cause subsequent conditioning circuit plate 12 to be setting, design problems such as limited and circuit layout occurs in response to this elastic reset spare 13.

In addition; In order also to see button clearly in the more insufficient place of light and to use; Change at present being basis, and with this keycap 14 and to adopt the transparent material making, and install a light guide 15 additional and develop the button 1 ' that light-permeable as shown in Figure 3 like Fig. 1, the button shown in 2; Also can be because of the patterned surfaces that is subject to this metal base plate 11 111; And make have stacked light guide sheet, the isostructural light guide 15 of reflector plate can only be arranged at the bottom surface of this metal base plate 11 in contrast to this keycap 14, and such structure can let via the light major part of this light guide 15 guidings all by these metal base plate 11 reflections in fact or covered; So intrinsic brilliance is not high, luminous also inhomogeneous, and fails to reach button 1 that designed this light-permeable originally and the original idea that is applied to illuminated keyboard.

Summary of the invention

The purpose of the utility model is to provide the button that a kind of processing cost reduces, assembling is novel.

The utility model button comprises a metal base plate, a retaining frame, a keycap that is positioned on this metal base plate, and a permanent application of force pushes away and makes the elastic reset spare of this keycap away from this metal base plate.

This retaining frame is connected with this metal base plate and matches and defines an accommodation space.

This keycap comprises a cap body that protrudes out this retaining frame, reaches one from the outward extending shade of this cap body root edge.

This elastic reset spare is arranged in this accommodation space and the permanent application of force pushes away and makes this cap body away from this metal base plate, and at the cap body of replacing this keycap during away from this metal base plate, and this keycap is leaned on to this retaining frame and limited with this shade.

The purpose of the said button of the utility model and solution background technology problem can also adopt following technological means further to realize.

This retaining frame comprises one away from this metal base plate and have the frame body of a perforation, and a plurality of combination legs that extended protrusion by this frame body towards this metal base plate.

The perforation of this frame body is connected with this accommodation space.

This metal base plate comprises that the said combination leg of a plurality of corresponding these retaining frames of confession inserts chimeric caulking groove.

The said button of the utility model also comprises a circuit board that is arranged in this accommodation space.

The said button of the utility model also comprises one and is located between this circuit board and metal base plate and in order to light is imported in this accommodation space and the light guide that makes light advance towards the cap body direction of this keycap.

This light guide comprises a reflector plate that is positioned on this metal base plate, a LGP that is connected on this reflector plate, and a screening glass that is connected on this LGP.

This elastic reset spare comprises an elastomer that is arranged between this keycap and this circuit board, has elastic-restoring force; When applying pressure to this keycap when pressing down this elastomer, this elastomer can storage elasticity potential energy and is pressed deformation and touches this circuit board and send electric signal.

This elastic reset spare also comprises two bracing frames that each other articulate and be connected to side this keycap and this retaining frame.

The beneficial effect of the utility model is: by the assembling of this retaining frame and metal base plate; Make the structure of the utility model button on this metal base plate simplify; Lower the processing cost of metal die, circuit board etc., and equally can reach the firm even more stable requirement of usefulness of button unitary construction.

Description of drawings

Fig. 1 is a three-dimensional exploded view, and a kind of existing button is described;

Fig. 2 is a schematic side view, and this existing press-key structure is described;

Fig. 3 is a schematic side view, and the button of existing a kind of light-permeable is described;

Fig. 4 is a three-dimensional exploded view, and one first preferred embodiment of the utility model is described;

Fig. 5 is a schematic side view, and this first preferred embodiment structure is described;

Fig. 6 is a schematic side view, and one second preferred embodiment of the utility model is described.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is elaborated.

Consult Fig. 4,5, one first preferred embodiment of the utility model button comprises a metal base plate 2, retaining frame 3, keycap 4, a circuit board 5, and an elastic reset spare 6.

This metal base plate 2 be one smooth and do not need the plate body of special processing, comprise a plurality of caulking grooves 210, be explanation with four caulking grooves 210 in the present embodiment, and the interval is formed at four corners of this metal base plate 2 respectively.

This retaining frame 3 is connected on the surface of this metal base plate 2 and comprises one away from this metal base plate 2 and have the frame body 31 of a perforation 310, and the combination legs 32 of protrusion are extended in four compartment of terrains towards this metal base plate 2 by this frame body 31.This retaining frame 3 plugs to this metal base plate 2 corresponding chimeric caulking grooves 210 with said combination leg 32 and makes this retaining frame 3 be fixed on this metal base plate 2, and matches and define an accommodation space 8 that is connected with this perforation 310.These supplementary notes be, the number of said combination leg 32, position are to be provided with respect to the caulking groove 210 on this metal base plate 2, therefore, its quantity, position are not limited in the graphic aspect that discloses in the present embodiment.

This keycap 4 is sheathed in this retaining frame 3 and comprises the cap body 41 of a part from perforation 310 protrusions of this retaining frame 3, reaches one from the outward extending shade 42 of these cap body 41 root edges.

This circuit board 5 is arranged in this accommodation space 8 and is arranged on the surface of this metal base plate 2, and in general, this circuit board 5 is film circuit board or printed circuit board (PCB).

This elastic reset spare 6 is arranged in this accommodation space 8 and the permanent application of force pushes away and makes this keycap 4 away from this metal base plate 2; When not executing external force in this keycap 4; This elastic reset spare 6 pushes away and makes this keycap 4 away from this metal base plate 2, and the frame body of borrowing the shade 42 of this keycap 4 to lean on to support this retaining frame 3 31 and structure limited, that can not break away from button integral body, when the application of force is pushed this keycap 4; This keycap 4 toward these metal base plates 2 near, and conflict this circuit boards 5 and spread out of electric signal of this elastic reset spare of interlock 6.

In the present embodiment; This elastic reset spare 6 comprises an elastomer 61; And two bracing frames 62 that each other articulate and be connected to this keycap 4 and this retaining frame 3 with side; Wherein, this elastomer 61 is materials that rubber or spring etc. have elastic-restoring force, 62 one-tenth general common scissors foot-supporting structures of support frame as described above.In the present embodiment this elastomer 61 be constitute with rubber and be arranged between this keycap 4 and this circuit board 5; And the same side of support frame as described above 62 is connected with on this retaining frame 3; And when pushing this keycap 4; These elastomer 61 deformation of interlock and accumulate elastic-restoring force and contact simultaneously on this circuit board 5 and pass out electric signal, after external force disappeared, this elastomer 61 discharged elastic-restoring force and cooperates propping up of support frame as described above 62 and push up to this keycap 4 away from this circuit board 5.

Can know by above-mentioned explanation; The metal base plate 2 of the utility model button does not need to form complicated structural design again and is provided with for this elastic reset spare 6; So can keep smooth, simple plate body aspect; And the metal procedure for processing that can significantly reduce cost higher, thereby improve the shortcoming of existing button 1.In addition, limited so circuit board 5 does not need to cooperate the aspect of this metal base plate yet again because the surfacing of this metal base plate 2, for reducing cost of manufacture suitable help is arranged.

Consult Fig. 6; One second preferred embodiment of the utility model button is similar with above-mentioned first preferred embodiment; It does not exist together and only is that this second preferred embodiment also comprises a light guide 7 that is located in 2 of this circuit board 5 and metal base plates; In addition, the cap body 41 of this keycap 4 adopts the material of light-permeable material to constitute, and can be used for assembling illuminated keyboard.

This light guide 7 comprises a reflector plate 71 that is positioned on this metal base plate 2; A LGP 72 that is arranged on this reflector plate 71; And a screening glass 73 that is arranged on this LGP 72, in order to importing in this accommodation space 8 and make light advance from the light of both sides (figure does not show) towards cap body 41 directions of this keycap 4.This LGP 72 makes light penetrate with the form of the area source direction towards this keycap 4 by optical reflection, refraction after in order to the light mixed light that the outside is got into; This reflector plate 71 is in order in will be more these LGPs 72 of light reflected back that advance towards the bottom; This screening glass 73 then has certain light transmission, in this LGP 72 of protection, also can not cover the light of advancing towards this keycap 4, and appear to the external world after making light arrive this keycap 4, so, just can also can clearly see button at the insufficient light place.

What is worth mentioning is; The light guide 7 of this second preferred embodiment is to be arranged in this accommodation space 8 that is defined by metal base plate 2 and keycap 4; Except the protection of can be further borrowing this metal base plate 2 avoid external force impaired; The light of being advanced towards this keycap 4 by this light guide 7 can not covered by metal base plate as existing light-permeable button 1 ' (see figure 3), and printing opacity brightness can significantly increase.

In sum, the utility model is to utilize cooperating of this retaining frame 3 and metal base plate 2, and a kind of button of new package assembly is provided; And the patterned surfaces that the metal base plate 2 that can make the utility model button does not need extra making to supply the elasticity return unit to connect; Not only lowered and used the processing cost of die forming, and avoided the limited problem of board design, simultaneously; Further can each assembly be arranged in this retaining frame 3 and the accommodation space 8 that this metal base plate 2 cooperates; Make that whole press-key structure is more firm, performance is also more steady, so can reach the purpose of the utility model really.

Claims

1. a button comprises a metal base plate, a keycap that is positioned on this metal base plate, and a permanent application of force pushes away and makes the elastic reset spare of this keycap away from this metal base plate; It is characterized in that: this button also comprises one and is connected and matches with this metal base plate and define the retaining frame of an accommodation space; This keycap comprises a cap body that protrudes out this retaining frame; Reach one from the outward extending shade of this cap body root edge, wherein, this elastic reset spare is arranged in this accommodation space; And during away from this metal base plate, make this keycap limited by supporting this retaining frame with this shade at the cap body of replacing this keycap.

2. button according to claim 1 is characterized in that: this retaining frame comprises one away from this metal base plate and have the frame body of a perforation, and a plurality of combination legs that extended protrusion by this frame body towards this metal base plate.

3. button according to claim 2 is characterized in that: the perforation of this frame body is connected with this accommodation space.

4. button according to claim 3 is characterized in that: this metal base plate comprises that the said combination leg of a plurality of corresponding these retaining frames of confession inserts chimeric caulking groove.

5. button according to claim 4 is characterized in that: this button also comprises a circuit board that is arranged in this accommodation space.

6. button according to claim 5 is characterized in that: this button also comprises one and is located between this circuit board and metal base plate and in order to light is imported in this accommodation space and the light guide that makes light advance towards the cap body direction of this keycap.

7. button according to claim 6 is characterized in that: this light guide comprises a reflector plate that is positioned on this metal base plate, a LGP that is connected on this reflector plate, and a screening glass that is connected on this LGP.

8. button according to claim 7; It is characterized in that: this elastic reset spare comprises an elastomer that is arranged between this keycap and this circuit board, has elastic-restoring force; When applying pressure to this keycap when pressing down this elastomer, this elastomer can storage elasticity potential energy and is pressed deformation and touches this circuit board and send electric signal.

9. button according to claim 8 is characterized in that: this elastic reset spare also comprises two bracing frames that each other articulate and be connected to side this keycap and this retaining frame