CN206076114U - Button exhaust structure - Google Patents

Abstract

A kind of button exhaust structure, including a base plate, a circuit layer being layered on base plate, a keycap being arranged on circuit layer, one it is arranged at the elastomer between circuit layer and keycap；Wherein, an exhaust passage from neighbouring elastomer inside center to elastomer peripheral-rim deviation with insertion circuit layer, and be communicated to base plate.By the exhaust passage on stroke because elder generation forms turnover by relatively being offset towards its root edge adjacent to elastomer center again, to improve waterproof and dustproof effect.

Description

Button exhaust structure

Technical field

This utility model is related to a kind of press element, more particularly to one kind is applicable to the button exhaust structure of keyboard.

Background technology

Traditional press-key structure, typically by the elastic force during elastomer offer pressing arranged inside which and its reply Power, makes the distortional elastomer so that staff is able to pressing keycap, and after release provides restoring force by keycap by the elastomer Fight back initial position.

Its internal air is discharged when exhaust structure is provided with to press general elastomer more, and supply after external force release Outside air is entered.If however, the exhaust structure of elastomer is located between its bottom and circuit board or substrate, it tends to be difficult to carry For waterproof or dust-proof effect, therefore also have in the past and the exhaust structure vertically through substrate is provided with button bottom, before solving State problem.But it is the trend in response to slimming keyboard, relatively thin substrate design is by the air road of the steam vent for causing straight up and down Footpath shortens, and the air capacity that can accommodate is also not enough, easily cause after elastomer compressive deformation cannot resilience the problems such as, while outside Aqueous vapor or steam be also easily directly entered to press-key structure, therefore waterproof effect is not good.

Utility model content

The main purpose of this utility model, is to provide a kind of button exhaust structure, and which is mainly on the stroke of aerofluxuss Turning point is provided, so can not only increase the air capacity that can accommodate and avoid elastomer cannot resilience, while can also slow down Extraneous aqueous vapor or steam enters key inside by bottom, to provide preferably waterproof and dustproof effect.

In order to reach above-mentioned purpose, this utility model provides a kind of button exhaust structure, and which includes：

One base plate；

One circuit layer, stacking is on which floor plate；

One keycap, is arranged on the circuit layer；

One elastomer, is arranged between the circuit layer and the keycap, and the root edge of the elastomer closely sealed is amplexiformed in the circuit Layer；And

One exhaust passage, from the neighbouring elastomer inside center to elastomer peripheral-rim deviation with the insertion circuit layer, and It is communicated to the base plate.

Above-mentioned button exhaust structure, wherein the elastomer root edge are in a ring-type.

Above-mentioned button exhaust structure, the wherein elastomer include a trigger unit and are arranged at the one of the end of the trigger unit Conductive junction point.

Above-mentioned button exhaust structure, the wherein circuit layer include a protective layer and a membrane circuit layer, and the protective layer sets It is placed in above the membrane circuit layer, and the thin flm circuit, with a switch, its correspondence is below the conductive junction point.

Above-mentioned button exhaust structure, the wherein protective layer be provided with one adjacent to the elastomer center first through hole, And in the membrane circuit layer be provided with one connect with the first through hole and towards at the elastomer outer rim offset the second through hole, and The third through-hole being connected with second through hole is provided with the base plate, to constitute the exhaust passage.

Above-mentioned button exhaust structure, wherein further including a backlight module, is arranged at below the base plate, and the backlight module Including a fourth hole being connected with the third through-hole.

It is recessed with the exhaust passage lateral communication one to be arranged with further on above-mentioned button exhaust structure, the wherein base plate Portion, and the recess is in the one side that the base plate is mutually stacked with the circuit layer.

Above-mentioned button exhaust structure, the wherein recess are with dent and be formed on the base plate, and are communicated in the threeway Hole.

Around a waterproof layer between above-mentioned button exhaust structure, the wherein circuit layer and the base plate, and around the recess And at the periphery of the exhaust passage.

By the exhaust passage on stroke because elder generation is by relatively offseting and shape towards its root edge adjacent to elastomer center again Into turnover, to reach above-mentioned purpose.

This utility model is described in detail below in conjunction with the drawings and specific embodiments, but not as to this utility model Restriction.

Description of the drawings

Fig. 1 perspective exploded views of the present utility model；

Fig. 2 combination cross-sectional schematics of the present utility model；

Aerofluxuss schematic diagram when Fig. 3 this utility model is pressed；

Reply schematic diagram when Fig. 4 this utility model rebounds.

Wherein, reference

Lower convergence part 10

Circuit layer 11

Protective layer 110

Membrane circuit layer 111

Switch 111a

First through hole 112

Second through hole 113

Base plate 12

Third through-hole 122

Recess 124

Waterproof layer 13

Permitted gas space 130

Backlight module 14

Fourth hole 141

Keycap 2

Upper convergence part 20

Connector 3

First connecting rod part 31

First time convergence part 310

Convergence part 311 on first

Second connecting rod part 32

Second time convergence part 320

Convergence part 321 on second

Elastomer 4

Root edge 400

Trigger unit 41

Conductive junction point 42

Exhaust passage P

Specific embodiment

In order to be able to further disclose feature of the present utility model and technology contents, refer to below in connection with this utility model Detailed description and accompanying drawing, but appended accompanying drawing only provides with reference to and illustrates to use, not for being limited to this utility model System.

Refer to Fig. 1 and Fig. 2, perspective exploded view respectively of the present utility model and combination cross-sectional schematic.This reality It is elastic with a kind of button exhaust structure of new offer, including a base plate 12, a circuit layer 11, a keycap 2, a connection piece 3 and Body 4；Wherein：

Base plate 12 be used to carrying above-mentioned other each components of the present utility model (for example circuit layer 11, keycap 2, connector 3 and Elastomer 4), and base plate 12 be, for example, metallic plate (hard plate), be provided with the lower convergence part 10 being mutually connected with above-mentioned connector 3, under Convergence part 10 specifically may include two times articulated parts (such as pivot joint snap fit) and two locating parts (such as spacing snap fit), can be by base plate 12 Protruded from the circuit layer 11 by circuit layer 11 after stamped molding.

Circuit layer 11 is stacked and placed on above base plate 12, and wherein circuit layer 11 includes a protective layer 110 and a membrane circuit layer 111, there is in membrane circuit layer 111 wiring (not shown) and switch 111a, protective layer 110 is arranged at membrane circuit layer Above in the of 111, to the circuit of protective film circuit layer 111.Also, have what 4 center of correspondence elastomer opened up on protective layer 110 First through hole 112, to expose the switch 111a in membrane circuit layer 111, and the aperture of first through hole 112 compared with elastomer 4 Internal diameter is little, elastomer 4 is attached on protective layer 110.In the present embodiment, protective layer 110 is preferably a mylar (Mylar；Mylar film), a sheet rubber, a silica gel piece or other suitable insulant.

Keycap 2 is with pressing for staff, and is linked on base plate 12 via connector 3, and the keycap 2 has and is connected The upper convergence part 20 that part 3 is mutually connected.Upper convergence part 20 specifically may include articulated part on two (such as pivot joint snap fit) and two locating parts (such as spacing snap fit), can be integrally formed with plastic material with keycap 2.

Connector 3 is connected between base plate 12 and keycap 2, to drive keycap 2 to make upper and lower reciprocal fortune on base plate 12 It is dynamic.An elastomer 4 is provided with connector 3, which is to be resisted against between circuit layer 11 and keycap 2.In more detail, connector 3 is by one First connecting rod part 31 is formed with 32 interlaced pivot joint of a second connecting rod part.Specifically, the first connecting rod part 31 of the connector 3 And second connecting rod part 32 is generally each in the shape of a frame, and first connecting rod part 31 substantially can matchingly be sheathed on second in external form Enclose in link member 31.Wherein, first connecting rod part 31 can have first time linking being connected in the lower convergence part 10 of the base plate 12 Portion 310, and it is connected the convergence part 311 on the first of the upper convergence part 20 of the keycap 2, and second connecting rod part 32 can also has rank Be connected to the lower convergence part 10 of the base plate 12 second time convergence part 320, and be connected in the upper convergence part 20 of the keycap 2 second Upper convergence part 321；The connector 3 can be provided drives keycap 2 to make upper and lower reciprocating motion, and then realizes that staff can press keycap 2 Reach the purpose of input key command.In some embodiments, connector 3 also can be replaced the support that other have similar functions Structure, such as V-type, A types or two parallel bar linkage structures, this part is not limited to.

Additionally, 4 bottom of elastomer of the present utility model has a ring-type root edge 400, and the root edge 400 of the elastomer 4 is close Conjunction is amplexiformed on the protective layer 110 of circuit layer 11.Imply that between the root edge 400 of the elastomer 4 and protective layer 110 it is along whole circle Week is developed completely without space, to reach the demand of dust-proof, waterproof.In addition, elastomer 4 further includes trigger unit 41 and is arranged at The conductive junction point 42 of 41 end of trigger unit, when 41 own elasticity body 4 of trigger unit is pressurized, the conductive junction point 42 of 41 end of trigger unit can Switch 111a in triggering membrane circuit layer 111, to produce an electronic signal.

See also shown in Fig. 2 to Fig. 4, this utility model is mainly through with an aerofluxuss in circuit layer 11 and base plate 12 and leads to Road P, exhaust passage P are offset with insertion circuit layer 11 from 4 inside center of neighbouring elastomer to outside elastomer 4, and are communicated to Base plate 12, when deforming so that above-mentioned elastomer 4 is pressed by keycap 2, there is provided needed for its aerofluxus；Simultaneously when keycap 2 is to be replied, There is provided extraneous air to enter and keycap 2 rebounds initial position for the elastomer 4.As shown in Fig. 2 circuit layer 11 is in protective layer 110 are provided with one relatively adjacent to the first through hole 112 of 4 center of elastomer, and one and is then provided with membrane circuit layer 111 The second through hole 113 that one through hole 112 is connected and offsets towards at 4 outer rim of elastomer, therefore first through hole 112 and the second through hole 113 are arranged and are connected in partly overlapping mode, and the third through-hole being mutually stacked with the second through hole 113 is provided with the base plate 12 122, use exhaust passage P described in composition one.

So, by above-mentioned contexture, you can obtain this utility model button exhaust structure.

Accordingly, as shown in Figures 3 and 4, when above-mentioned keycap 2 is pressed, elastomer 4 is pushed and is deformed by keycap 2, in which The air in portion can be discharged in outer by the exhaust passage P；And when 2 pressure of keycap is released, elastomer 4 can pass through institute State the air outside exhaust passage P offers to enter inside which, with reinstatement by 2 jack-up of keycap to initial position.Therefore, by In the exhaust passage P from neighbouring 4 inside center of elastomer to 4 peripheral-rim deviation of elastomer with insertion circuit layer 11, then connect To base plate 12, therefore not discharged with straight line downwards, it is thus possible to increase the stroke and capacity of aerofluxuss, it is to avoid elastomer 4 because After compressive deformation cannot resilience and there is the problems such as mutually adsorbing with base plate 12, simultaneously because the exhaust passage P has on stroke There is a turning point (because elder generation forms turnover by relatively being offset towards elastomer 4 outer rim direction adjacent to 4 center of elastomer again), therefore the external world Aqueous vapor or steam are difficult directly to enter key inside by 12 bottom of base plate, and affect the conductive junction point 42 and switch of key inside The conducting triggering of 111a, therefore, button exhaust structure of the present utility model provides preferably waterproof effect compared to existing.

Additionally, being referred to shown in Fig. 2 again, it is to increase open ended gas flow inside the exhaust passage P, can on base plate 12 The recess 124 of one and the exhaust passage P lateral communication is concavely provided with the one side being mutually stacked with circuit layer 11 further, this is recessed Portion 124 can be formed on base plate 12 by such as dent mode, and is communicated in third through-hole 122.Further, the circuit layer 11 A waterproof layer 13 can be also surround between base plate 12, the waterproof layer 13 can be made up of UV coating and glue, with around the recess The periphery place of 124 and exhaust passage P (or third through-holes 122), uses the distance between increase circuit layer 11 and base plate 12, goes forward side by side one Step is internally formed a permitted gas space 130 to increase air capacity in circuit layer 11, base plate 12 and waterproof layer 13, while providing circuit layer More fully dust-proof, waterproof effect between 11 and base plate 12.

In some embodiments, press-key structure more may include a backlight module 14, be arranged at the lower section of base plate 12, also, Backlight module 14 is entered or is arranged from the fourth hole 141 with the fourth hole 141 being connected with third through-hole 122, supplied gas In exhaust passage P.

Certainly, this utility model can also have other various embodiments, spiritual and its essence without departing substantially from this utility model In the case of, those of ordinary skill in the art work as and can make various corresponding changes and deformation, but these according to this utility model Corresponding change and deformation should all belong to the scope of the claims appended by this utility model.

Claims (9)

1. a kind of button exhaust structure, it is characterised in that include：

One base plate；

One circuit layer, stacking is on which floor plate；

One keycap, is arranged on the circuit layer；

One elastomer, is arranged between the circuit layer and the keycap, and the root edge of the elastomer closely sealed is amplexiformed in the circuit layer；With And

One exhaust passage, from the neighbouring elastomer inside center to elastomer peripheral-rim deviation with the insertion circuit layer, and connects To the base plate.

2. button exhaust structure according to claim 1, it is characterised in that the elastomer root edge is in a ring-type.

3. button exhaust structure according to claim 1, it is characterised in that the elastomer includes a trigger unit and is arranged at One conductive junction point of the end of the trigger unit.

4. button exhaust structure according to claim 3, it is characterised in that the circuit layer includes a protective layer and a thin film Circuit layer, the protective layer are arranged above the membrane circuit layer, and the thin flm circuit, with a switch, its correspondence is positioned at the conduction Below contact.

5. button exhaust structure according to claim 4, it is characterised in that the protective layer is provided with adjacent to the elastomer The first through hole of center, and be provided with one in the membrane circuit layer and connect with the first through hole and towards at the elastomer outer rim Second through hole of skew, and the third through-hole being connected with second through hole is provided with the base plate, led to constituting the aerofluxuss Road.

6. button exhaust structure according to claim 5, it is characterised in that further include a backlight module, be arranged at the bottom Below plate, and the backlight module includes a fourth hole being connected with the third through-hole.

7. button exhaust structure according to claim 5, it is characterised in that is further arranged with the base plate with the row The recess of gas passage lateral communication, and the recess is in the one side that the base plate is mutually stacked with the circuit layer.

8. button exhaust structure according to claim 7, it is characterised in that the recess is with dent and be formed at the base plate On, and it is communicated in the third through-hole.

9. button exhaust structure according to claim 7, it is characterised in that around a waterproof between the circuit layer and the base plate Layer, and around at the periphery of the recess and the exhaust passage.