CN203445036U

CN203445036U - Key switch, key unit and computer keyboard

Info

Publication number: CN203445036U
Application number: CN201320507282.5U
Authority: CN
Inventors: 凌小艳; 钟肖勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-08-09
Filing date: 2013-08-09
Publication date: 2014-02-19
Anticipated expiration: 2023-08-09

Abstract

The utility model provides a key switch, a key unit and a computer keyboard. The key switch is used by a computer. The key switch comprises a moving part, a spring, a fixed part, film switches, an elastic pressing connection part, an elastic body and a film switch circuit board with a plurality of film switches. The fixed part comprises a containing space. The moving part is contained in the containing space. The spring is clamped between the moving part and the fixed part. The key switch also comprises the elastic pressing connection part, the elastic body and the film switch circuit board with the plurality of film switches. One end of the elastic pressing connection part presses against the moving part, the other end of the elastic pressing connection part presses the elastic body, and the elastic body presses and controls the working states of the film switches of the film switch circuit board. The key switch of the utility model has the advantages of good hand feeling and low cost. At the same time, the key unit and the computer keyboard used by the computer with the use of the key switch is also provided.

Description

Key switch, push-button unit and computor-keyboard

Technical field

The utility model relates to a kind of electronic equipment input device, relates in particular to a kind of key switch, push-button unit and adopts the computor-keyboard of described push-button unit.

Background technology

Along with the development of modern electronic technology, various electronic products are constantly developed, and as the main input unit of electronic equipment, computor-keyboard is also more and more important.

Computor-keyboard is to knock operation by user, presses corresponding push-button unit and realizes the input unit to hardware input signals such as electronic equipments, and nowadays keyboard is widely used.

Comfortable feel user experiences extremely important for the use of computor-keyboard.According to control button, move up and down the design of device, on existing market, roughly have two kinds of modes.

The first: the elastomer that provides the plastic materials such as silica gel to process, this elastomer be placed in keycap under, contact with keycap lower surface.When push-button unit is pressed, elastomer is extruded, and by switch triggering, corresponding film circuit board is transferred to signal the central processing unit of corresponding computor-keyboard, so realizes signal input.

For this kind of mode, because the feel that this mode pushes button is controlled by plastic elastomeric, the characteristic of plastic material aspect resilience causes feel general, but the price that cheap elastomer and film circuit board make computor-keyboard has advantage.

The second: it is to realize moving up and down of button by mechanical spring, is furnished with circuit board and the superincumbent components and parts of welding of hard simultaneously and processes switching signal.When keycap is pressed, spring is squeezed, and by switch triggering, the circuit operation on corresponding hard circuit board, transfers to switching signal the central processing unit of computor-keyboard.

For this kind of mode, because being completes moving up and down of button by mechanical spring, button moving process is fine and smooth consistent, and feel is fine, but mechanical spring and hard circuit board and components and parts thereof rise cost, cannot on market, popularize.

Utility model content

For the problem that prior art computor-keyboard cost is increased and feel is not good, the utility model provides the key switch of the low and soft handle of a kind of cost.

A kind of push-button unit and computor-keyboard that adopts above-mentioned key switch is also provided simultaneously.

A kind of key switch, described key switch comprises the thin film switch wiring board of movable part, spring, fixed part, thin film switch, elasticity abutting part, elastomer and a plurality of thin film switches of tool, described fixed part comprises receiving space, described movable part is contained in described receiving space, described spring clip is located between described movable part and described lower cover, described key switch also comprises, described elasticity abutting part one end connects described movable part, other end elasticity butt is pressed described elastomer, and described elastomer is by the thin film switch operating state of thin film switch wiring board described in pressure-controlled.

Further improvement as above-mentioned execution mode, described elasticity abutting part comprises rotating part, described rotating part comprises the first round end, second round end of a pivot and synchronous rotary, described first round end one end and described pivot join, the other end is connected with described movable part selectivity, described second round end one end is fixed to described pivot, elastomer described in other end butt, and described pivot two ends are articulated in described resettlement section.

Further improvement as above-mentioned execution mode, described elastomer comprises first end, connecting portion and the second end, described connecting portion connects described first end and the second end, the second round end elasticity butt of described first end and described rotating part, thin film switch wiring board described in described the second end selectivity butt.

Further improvement as above-mentioned execution mode, described movable part comprises helical pitch post, and described elasticity abutting part comprises annulus and elastic arm, and described annulus is movably set in the helical pitch post of described movable part, described elastic arm one end connects described annulus, and other end elasticity compresses described elastomer.

Further improvement as above-mentioned execution mode, described fixed part comprises upper cover and the lower cover cooperatively interacting, described upper cover coordinates and surrounds receiving space with described lower cover, described lower cover comprises a hollow reference column, described spring housing is located at the helical pitch post of described movable part, and be located between described movable part and described lower cover, described helical pitch post one end is contained in the hollow region of described reference column.

As the further improvement of above-mentioned execution mode, described movable part coordinates slidable fit by locator protrusions with described guide-track groove with described lower cover.

As the further improvement of above-mentioned execution mode, described fixed part comprises upper cover and lower cover, together with described upper cover is fixed with projection by snap fit with described lower cover.

A kind of push-button unit, it is characterized in that, it comprises keycap and key switch, described key cap cover is established described key switch, described key switch comprises movable part, spring, fixed part, thin film switch, elasticity abutting part, the thin film switch wiring board of elastomer and a plurality of thin film switches of tool, described fixed part comprises receiving space, described movable part is contained in described receiving space, described spring clip is located between described movable part and described fixed part, described key switch also comprises, described elasticity abutting part one end connects described movable part, other end elasticity butt is pressed described elastomer, described elastomer is by the thin film switch operating state of thin film switch wiring board described in pressure-controlled.

A kind of computor-keyboard, it is characterized in that, comprise bottom, a plurality of push-button units and control circuit board, described a plurality of push-button unit array arranges, described push-button unit is electrical connection corresponding to described control circuit board respectively, described push-button unit comprises keycap and key switch, described key cap cover is established described key switch, described key switch comprises movable part, spring, fixed part, thin film switch, elasticity abutting part, the thin film switch wiring board of elastomer and a plurality of thin film switches of tool, described fixed part comprises receiving space, described movable part is contained in described receiving space, described spring clip is located between described movable part and described lower cover, described key switch also comprises, described elasticity abutting part one end connects described movable part, other end elasticity butt is pressed described elastomer, described elastomer is by the thin film switch operating state of thin film switch wiring board described in pressure-controlled.

Compared to prior art, in computor-keyboard of the present utility model, the key switch of push-button unit arranges elasticity abutting part and elastomer, utilize described elasticity abutting part elasticity butt to press described elastomer, described elastomer is under the pressure-acting of described elasticity abutting part, selectivity drives the thin film switch of described thin film switch wiring board open or close, thereby realize physics input signal to the conversion of electrical input signal, avoid using expensive material, reduce costs, promote the not good defect of feel that only adopts elastomer structure simultaneously.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also according to these accompanying drawings, obtain other accompanying drawing, wherein:

Fig. 1 is the perspective exploded view of the utility model computor-keyboard.

Fig. 2 is the perspective exploded view of push-button unit shown in Fig. 1.

Fig. 3 is the perspective exploded view of key switch shown in Fig. 2.

Fig. 4 is another angle schematic perspective view after the local assembling of key switch shown in Fig. 2.

Fig. 5 is the side sectional view of elastomer shown in Fig. 3 and thin film switch wiring board.

Fig. 6 is a wherein working state structure schematic diagram of key switch shown in Fig. 4.

Fig. 7 is another working state structure schematic diagram of key switch shown in Fig. 4.

Fig. 8 is the perspective exploded view of the key switch of the utility model the second computor-keyboard that execution mode discloses.

Fig. 9 is a wherein working state structure schematic diagram of key switch shown in Fig. 8.

Figure 10 is another working state structure schematic diagram of key switch shown in Fig. 8.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making all other embodiment that obtain under creative work prerequisite, all belong to the scope of the utility model protection.

The utility model embodiment discloses a kind of computor-keyboard, refers to Fig. 1, is the perspective exploded view of the utility model computor-keyboard.Described computor-keyboard 3 comprises lid 31, a plurality of push-button unit 33, supporting bracket 34, control circuit board 35 and bottom 37.Described lid comprises through hole 311.Described lid 31 coordinates described bottom 37 to surround receiving space to accommodate described a plurality of push-button unit 33, supporting bracket 34 and described control circuit board 35.Described a plurality of push-button unit 33 arrays are embedded in the through hole 311 of described lid 31, and local being folded in the supporting bracket 34 between described lid 31 and described bottom 37 is contained in described receiving space simultaneously simultaneously.Described supporting bracket 34 supports described push-button unit 33 in described receiving space.

When operating personnel carry out input operation, knock described push-button unit 33, and mechanical input signal is transferred to described control circuit board 35, described control circuit board 35 is converted to described mechanical input signal electrical input signal and transfers to electronic equipment, thereby realizes signal input.

Referring to Fig. 2, is the perspective exploded view of push-button unit shown in Fig. 1 again.Described push-button unit 33 comprises keycap 330 and a key switch 331.Described keycap 330 comprises receiving space, and described keycap 330 lids are located on described key switch 331, and described key switch 331 parts are contained in the receiving space of described keycap 330.

Incorporated by reference to consulting Fig. 3 and Fig. 4, wherein Fig. 3 is the perspective exploded view of key switch shown in Fig. 2 again, and Fig. 4 is schematic perspective view after the local assembling of key switch shown in Fig. 3.The key switch 331 of described push-button unit 33 is switch elements that a control user machinery input signal transfers to described control circuit board 35.When user presses the keycap 330 of described push-button unit 33, described key switch 331 is opened, and the mechanical pressure that correspondence is applied to described keycap 330 by user transfers to described control circuit board 35, to produce input electrical input signal.When user cancels, press described push-button unit 33, described key switch 331 is closed, and corresponding described control circuit board 35 stops producing electrical input signal.

Described key switch 331 comprise movable part 332, spring 333, fixed part 340, rotating part 335, elastomer 336,, protective layer 338 and thin film switch wiring board 339.Described fixed part 340 comprises upper cover 334 and the lower cover 337 that mutual correspondence is fixed.

Described movable part 332 comprises body 3320, abutment end 3321, locator protrusions 3323, helical pitch post 3325 and push projection 3327.

Described abutment end 3321 extends to form from described body 3320 upper surfaces, and integral body is cross column, the inner surface of keycap 330 described in its direct butt.Described locator protrusions 3323 extends to form from the side of described body 3320, and integral body is strip.Described helical pitch post 3325 is cylinders, and its one end extends to form away from described abutment end 3321 sides from described body 3320 courts, the up and down opposite side of being located at described body 3320 relative to described abutment end 3321.Described push projection 3327 is located at the side of described body 3320 equally, and is located at respectively two adjacent side of described body 3320 with described push projection 3327 and described locator protrusions 3323.

Described spring 333 is Compress Springs, and it is subject to correspondingly after pressed by external force to produce deformation within the scope of elastic deformation, meanwhile, produces reaction elastic force.Described spring 333 is sheathed on the helical pitch post 3325 of described the first movable part 332, and is located between described movable part 332 and described lower cover 337.

The upper cover 334 of described fixed part 340 comprises four sidewalls 3341 and snap fit 3345.The end to end setting of described four sidewall 3341, surrounds a hollow receiving space.Described snap fit 3345 extends to form from described upper cover 334 downside surfaces, and described snap fit 3345 is distributed in the junction of described sidewall 3341.

Described rotating part 335 comprises a pivot 3351, the first round end 3353 and the second round end 3355.Described the first round end 3353 is fixed to described pivot 3351 with described the second round end 3355 simultaneously.Relatively described the second round end 3355 of described the first round end 3353 arranges in obtuse angle.And described the first round end 3353 is all relative static with described pivot 3351 with described the second round end 3355.That is to say, when described the first round end 3353 rotation, described pivot 3351 drives the synchronous rotating Vortex of described the second round end 3355 simultaneously.

Described elastomer 336 is elastomers that silica gel material processes, specifically as shown in Figure 5.Described elastomer 336 comprises first end 3361, the second end 3363 and a connector 3365.Described first end 3361, the second end 3363 integral body are respectively hemispherical, relative spacing setting.Described connecting portion 3365 is cylindric, and connect described first end 3361 and described the second end 3363, the center of described first end 3361, the second end 3363 and described connecting portion 3365 is consistent, and the diameter of section of described connecting portion 3365 is less than the sphere diameter of described first end 3361 and the second end 3363, in described first end 3361 and the opposite side of described the second end 3363 and the outer ledge cross section of described connecting portion 3365, surround " ュ " type.

The engaging assembling corresponding to described upper cover 334 of the lower cover 337 of described fixed part 340 is fixing.Described lower cover 337 comprises projection 3371, elastic support 3372, two guide-track grooves 3373, reference column 3375 and diapire 3377.

Described projection 3371 is located on the sidewall of described lower cover 337, and it arranges and be fixed together with the corresponding engaging of snap fit 3345 of described upper cover 334, and described upper cover 334 is fitted together with the corresponding engaging of described lower cover 337.Described elastic support 3372 extends to form towards outside from described sidewall.In described two guide-track groove 3,373 two opposing sidewalls located therein, and corresponding with the locator protrusions 3323 of described movable part 332, described guide-track groove 3373 mutually assembles and forms slide rail fit structure with described locator protrusions 3323, described locator protrusions 3323 can freely come and go slip described guide-track groove 3373 is interior, makes the relatively described lower cover 337 of described movable part 332 free upper and lower relative sliding in setting stroke range.Described reference column 3375 is hollow cylindrical structures, and it runs through described diapire 3377.The corresponding nested hollow region that is contained in the reference column 3375 of described lower cover 337 of helical pitch post 3325 of described movable part 332, and can freely slide up and down.

Described protective layer 338 is the thin-film bodies that adopt insulating material to process, and it is laid on described thin film switch wiring board 339 surfaces.Described protective layer 338 surface arrays are provided with a plurality of the first through holes 3381, the second through hole 3383, and described the first through hole 3381 is run through in reference column 3375 one end of wherein said lower cover 337.The second end 3363 correspondences of described elastomer 336 are housed in the second through hole 3383 of described protective layer 338.

Described thin film switch wiring board 339 is films that a surface array arranges a plurality of thin film switches 3393, specifically as shown in Figure 5.At the described thin film switch wiring board 339 same arrays in surface, be provided with a plurality of through holes 3391, the through hole 3391 of described thin film switch wiring board 339 is corresponding respectively with the first through hole 3381 of described protective layer 338, that is, in the vertical direction, projected position is overlapping.Described thin film switch 3393 comprises the first electrode 3393a, the second electrode 3393b that relative spacing arranges.

When the described key switch 331 of assembling, first, described spring 333 is set on the helical pitch post 3325 of described movable part 332, and described helical pitch post 3325 is contained in the hollow region of the reference column 3375 of described lower cover 337, and described spring clip is located between described movable part 332 and described lower cover 337 simultaneously.

Secondly, between described upper cover 334 and described lower cover 337, by snap fit 3345 and the snap fit of described projection 3371, be fixed together.The helical pitch post 3325 of described movable part 332, locator protrusions 3323, described spring 333 correspondences are contained in the hollow receiving space of described upper cover 334.The corresponding nested cooperation of guide-track groove 3373 of described locator protrusions 3323 and described lower cover 337, because described locator protrusions 3323 can freely slide up and down by relatively described guide-track groove 3373 in setting range, thus the relatively described fixed part 340 of described movable part 332 at above-below direction equally along with the synchronous upper and lower relative sliding of the relatively described guide-track groove of described locator protrusions 3,323 3373.

Then, the pivot 3351 two ends pivot joints of described rotating part 335 are arranged on the sidewall of described lower cover 327, the push projection 3327 that described the first round end 3353 closes on described movable part 332 arranges, and the first end 3361 of elastomer 336 arranges described in described the second round end 3355 butts.

Moreover described elastomer 336 is located between described rotating part 335 and described thin film switch wiring board 339, meanwhile, the part of described lower cover 337 is located between the first end 3361 and described the second end 3363 of described elastomer 336.

The operation principle of described key switch 331 is as follows:

First, user applies pressure to described keycap 330;

Then, described keycap 330 promotes described movable part 332 and moves towards described thin film switch wiring board 339 directions, shortens the spacing between the two.

Particularly, described movable part 332 moves down, drive the locator protrusions 3323 of described movable part 332 along the relative down sliding of guide-track groove 3373 of described lower cover 337, described push projection 3327, synchronously to bottom offset, compresses the first round end 3353 of described rotating part 335.

Moreover; the second round end 3355 of described rotating part 335 compress described elastomer 336 first end 3361; by the elastic reaction of described elastomer 336 self; promote described the second end 3363 through the second through hole 3383 of described protective layer 338; so that butt is also pressed described thin film switch wiring board 339; realize described the first electrode 3393a, the second electrode 3393b contact conducting, thereby produce electrical signal transfer to described control circuit board 35, specifically as shown in Figure 6.

Finally, user's release pressure, described spring 333 self-recovery deformation effects, and produce reaction force, promote described movable part 332 and move up, drive described push projection 3327 synchronous mobile, make described rotating part 335 depart from described push projection 3327, simultaneously, described elastomer 336 is equally according to self-recovery deformation behavior, promoting described the second end 3363 is separated with described thin film switch wiring board 339, realize described the first electrode 3393a, the second electrode 3393b noncontact disconnection, thereby finish to produce input signal, specifically as shown in Figure 7.

Compared to prior art, in the computor-keyboard 3 of present embodiment, in described setting in key switch 331, rotating part is set as elasticity abutting part, utilize spring 333 to coordinate described movable part to realize the transmission of mechanical compression, utilize elastomer 336 and the elasticity of described thin film switch wiring board 339 to compress and the separated connecting and disconnecting that realize described thin film switch simultaneously, make described key switch 331 there are two operating states, both in conjunction with the pressing touch of mechanical computer keyboard, have and integrate the simple in structure of thin film switch computor-keyboard, the feature that cost is low, bring beyond thought effect.

Certainly, as the further improvement of above-mentioned execution mode, can also cancel and use independent protective layer 338, further simplified structure.

Referring to Fig. 8, is the stereo decomposing structural representation of the key switch of the utility model the second computor-keyboard that execution mode discloses again.In the present embodiment, the structure that described key switch 431 adopts tool elastic arm 4311 to be arranged on annulus 4313 replaces the rotating part 335 in a upper execution mode, further simplified structure.

Particularly, described key switch 431 comprises elasticity abutting part, and described elasticity abutting part comprises annulus 4313 and elastic arm 4311.Described annulus 4313 is folded between described spring 433 and described movable part 432, is set on described helical pitch post 4325 simultaneously.

Described elastic arm 4311 is the flexible steel discs of a tool, and its one end is fixed on described annulus 4313, and the other end suspends.

When assembling is during described key switch 431, the first end 4361 of elastomer 436 described in the direct elasticity butt of end that suspends of described elastic arm 4311.

When described key switch 431 work, the working state schematic representation of its unlatching or disconnection respectively as shown in Figure 9, Figure 10.When key switch 431 is opened, its operation principle is as follows:

User exerts pressure and is passed to described movable part 432, produces and moves downward trend, thereby drive described annulus 4313 synchronously to move down.The corresponding generation of the end pressure that suspends of described elastic arm 4311 compresses the first end 4361 of described elastomer 436, force described the second end 4363 to move down the thin film switch that butt is pressed described thin film switch wiring board 439 surfaces, realize thin film switch contact conducting, produce input signal, be that described key switch 431 is in opening, that is to say, described push-button unit is in running order.

When cancelling, user exerts pressure, the corresponding reaction force that produces of described spring 433 promotes to move on described annulus 4313 and described movable part 432, thereby drive described elastic arm 4311 to produce the trend moving up, reduce to be applied to the pressure of described elastomer 436, the second end 4363 of described elastomer 436 is separated from each other with described thin film switch wiring board 439, realizing thin film switch noncontact disconnects, no longer produce input signal, be that described key switch 431 is in off-state, that is to say institute, described push-button unit is in non operating state.

In the present embodiment, adopt tool elastic arm 4311 and annulus 4313 to form elasticity abutting parts and replace described rotating part, direct elastomer described in elasticity butt, further simplified structure, improves the reliability of key switch, further reduces costs.

The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present utility model.

Claims

1. a computer key switch, described key switch comprises movable part, spring, fixed part and thin film switch, described fixed part comprises receiving space, described movable part is contained in described receiving space, described spring clip is located between described movable part and described lower cover, it is characterized in that, described key switch also comprises elasticity abutting part, the thin film switch wiring board of elastomer and a plurality of thin film switches of tool, movable part described in the butt of described elasticity abutting part one end, other end elasticity butt is pressed described elastomer, described elastomer is by the thin film switch operating state of thin film switch wiring board described in pressure-controlled.

2. computer key switch according to claim 1, it is characterized in that, described elasticity abutting part comprises rotating part, described rotating part comprises the first round end, second round end of a pivot and synchronous rotary, described first round end one end and described pivot join, and the other end is connected with described movable part selectivity, and described second round end one end is fixed to described pivot, elastomer described in other end butt, described pivot two ends are articulated in described fixed part.

3. computer key switch according to claim 2, it is characterized in that, described elastomer comprises first end, connecting portion and the second end, described connecting portion connects described first end and the second end, the second round end elasticity butt of described first end and described rotating part, thin film switch wiring board described in described the second end selectivity butt.

4. computer key switch according to claim 1, it is characterized in that, described movable part comprises helical pitch post, described elasticity abutting part comprises annulus and elastic arm, described annulus is movably set in the helical pitch post of described movable part, described elastic arm one end connects described annulus, and other end elasticity compresses described elastomer.

5. computer key switch according to claim 4, it is characterized in that, described fixed part comprises upper cover and the lower cover cooperatively interacting, described upper cover coordinates and surrounds receiving space with described lower cover, described lower cover comprises a hollow reference column, described spring housing is located at the helical pitch post of described movable part, and is located between described movable part and described lower cover, and described helical pitch post one end is contained in the hollow region of described reference column.

6. computer key switch according to claim 5, is characterized in that, described movable part coordinates slidable fit by locator protrusions with described guide-track groove with described lower cover.

7. computer key switch according to claim 1, is characterized in that, described fixed part comprises upper cover and lower cover, together with described upper cover is fixed with projection by snap fit with described lower cover.

8. a computer push-button unit, is characterized in that, it comprises keycap and key switch, and described key cap cover is established described key switch, and described key switch is key switch as claimed in any of claims 1 to 7 in one of claims.

9. a computor-keyboard, it is characterized in that, comprise bottom, a plurality of push-button unit and control circuit board, described a plurality of push-button unit array arranges, described push-button unit is electrical connection corresponding to described control circuit board respectively, described push-button unit comprises keycap and key switch, and described key cap cover is established described key switch, and described key switch is key switch as claimed in any of claims 1 to 7 in one of claims.