CN208938858U - A kind of full-covering type Waterproof key structure - Google Patents
A kind of full-covering type Waterproof key structure Download PDFInfo
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- CN208938858U CN208938858U CN201821823261.3U CN201821823261U CN208938858U CN 208938858 U CN208938858 U CN 208938858U CN 201821823261 U CN201821823261 U CN 201821823261U CN 208938858 U CN208938858 U CN 208938858U
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- key
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- type waterproof
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Abstract
The utility model discloses a kind of full-covering type Waterproof key structures, are related to technical field of key, including the pcb board with key, shell and key cap assembly；The shell is fixedly mounted on top of the pcb board with key side, corresponds to the position right above key in the shell and offers through-hole；The key cap assembly includes the button cap in through-hole and the sticking part for being covered on hull outside face, and the button cap and sticking part are tightly connected through interconnecting piece.The utility model has the characteristics that improve the waterproof performance of key and extends product service life.
Description
Technical field
The utility model relates to technical field of key more particularly to a kind of full-covering type Waterproof key structures.
Background technique
Key is usually used on all kinds of electronic instruments, the input for all kinds of electronic signals.Press-key structure generallys use plastics
Aperture collocation rubber cap, the waterproof effect of this structure is not so good, and electronic instrument is easy to that water inlet occurs and damages.In the prior art
It generallys use and installs sealing bar structure realization waterproof effect additional, but sealing bar increases plastic housing and the molding difficulty of rubber cap, directly
Influence its yield rate.On the other hand, existing button cap is directly contacted with pcb board, and when pressing keys cap, active force is straight
It connects and is applied on pcb board, pcb board has stress can generate local deformation over time, influence the service life of product.
Utility model content
The purpose of this utility model is to provide a kind of full-covering type Waterproof key structures, have the waterproof performance for improving key
The characteristics of with product service life is extended.
To achieve the above object, the utility model provides the following technical solutions:
A kind of full-covering type Waterproof key structure, which is characterized in that including the pcb board with key, shell and key cap assembly；
The shell is fixedly mounted on top of the pcb board with key side, corresponds to the position right above key in the shell and offers
Through-hole；The key cap assembly includes the button cap in through-hole and the sticking part for being covered on hull outside face, the key
Cap and sticking part are tightly connected through interconnecting piece.
Further, at least one limit hole is offered on the pcb board, the shell corresponds to the position setting of limit hole
There is limited post, the limited post is inverted cone-shaped structure, and the lower end of inverted cone-shaped structure penetrates in limit hole.
Further, the pcb board is fixedly connected with shell through bolt.
Further, the button cap, interconnecting piece and sticking part are integrally formed.
Further, the key cap assembly is made of tetrafluoro rubber.
Further, the lateral surface of the shell is provided with mounting groove, and key cap assembly is located in mounting groove.
Compared with prior art, the utility model has the beneficial effects that the sticking part of the utility model increases button cap
Fitting area between component and shell can largely improve the waterproof performance of button cap, and the structure of key cap assembly
More smooth, production is simple；On the other hand, button cap is not direct contacts with pcb board, will not generate local stress, but logical
Shell is crossed by pressure dissipation to monolith pcb board, local deformation on pcb board is prevented, improves the service life of product.
Detailed description of the invention
Fig. 1 is this existing press-key structure schematic diagram.
Fig. 2 is the A-A cross-sectional view of Fig. 1.
Fig. 3 is the partial enlarged view in Fig. 2 at B.
Fig. 4 is the perspective view of the explosion of an embodiment of the present invention.
Fig. 5 is the cross-sectional view of an embodiment of the present invention.
Fig. 6 is the rubber cap partial schematic diagram of an embodiment of the present invention.
In figure: 1-PCB plate；2- key；3- shell；31- through-hole；4- button cap；5- bolt；6- sealing mechanism；61- sealing
Muscle；62- groove；7-PCB plate；71- key；72- bolt；73- limit hole；8- shell；81- through-hole；82- mounting groove；83- limit
Column；9- key cap assembly；91- button cap；92- sticking part；93- interconnecting piece.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1 to Figure 3 it is existing press-key structure, has key 2 on pcb board 1, shell 3 is mounted on through bolt 5
The top of pcb board 1, and through-hole 31 is offered in the position of corresponding key 2, a button cap 4, button cap are provided in each through-hole
4 side mechanism is directly contacted with pcb board, and when pressing keys cap 4, active force is applied directly to corresponding key on pcb board
Around, local pressure is generated, over time, pcb board can generate local deformation, shorten the service life of product.The knot
The waterproof performance of structure is bad, in order to enhance its waterproof performance, generally in such a way that sealing mechanism 6 is added in the outer in key,
Sealing mechanism 6 includes the sealing bar 61 in the side mechanism of button cap 4 and the groove 62 on shell 3, is led to again in the installation of button cap 4
When in hole 31, sealing bar 61 is exactly in groove 62, forms sealing mechanism 6, has waterproof performance.But the waterproofness of the mechanism
Can be general, certain difficulty also is brought to the molding of button cap and shell.
Fig. 4 and Fig. 5 are please referred to, the present embodiment provides a kind of full-covering type Waterproof key structures, including the pcb board with key 71
7, shell 8 and key cap assembly 9.The shell 8 is fixedly mounted on top of the pcb board with 71 side of key, the pcb board and shell
Body is fixedly connected through bolt；Position right above the corresponding key 71 of the shell 8 offers through-hole 81.The key cap assembly
9 are mounted on the top of shell 8, the button cap 91 including being located in through-hole 81 and the sticking part 92 for being covered on 8 lateral surface of shell, institute
It states button cap 91 and is tightly connected with sticking part 92 through interconnecting piece 93.The button cap 91, interconnecting piece 93 and the one of sticking part 92 at
Type is made of tetrafluoro rubber.Sticking part 92 increases the contact surface with shell 8, enhances the waterproof performance of press-key structure.Connection
The thickness in portion 92 is less than the thickness of sticking part 92, provides screen resilience for button cap, after finger leaves button cap 91, button cap 91
It can restore by the screen resilience of interconnecting piece 91 to original state.It is noted that the shape of button cap can be by a variety of, in Fig. 5
The button cap of the leftmost side, corresponding key 71 is larger, and the thickness of button cap 91 is then corresponding smaller, if key is smaller, key
The shape of cap 91 shortens the spacing with key as shown in fig. 6, middle part needs setting convex block, so as to just can be real in lesser stroke
The pressing of existing key.In order to accommodate key cap assembly, the lateral surface of shell 8 is provided with mounting groove 82, and key cap assembly 9 is located at peace
In tankage 82；Specifically, through-hole 81 is located in mounting groove 82, and when key cap assembly 9 is fitted in mounting groove 82, sticking part 92
Lateral wall be bonded with the inner sidewall of mounting groove 82.
Please continue to refer to Fig. 5, in this present embodiment, at least one limit hole 73, the shell are offered on the pcb board 7
The position of the corresponding limit hole of body 73 is provided with limited post 83, and the limited post 83 is inverted cone-shaped structure, the lower end of inverted cone-shaped structure
It penetrates in 73 son of limit hole.During installation, first limited post 83 can be penetrated in limit hole 73, at this point, the spiral shell on pcb board and shell
Pit alignment, convenient for the fixation of bolt.In addition, inverted cone-shaped structure also realizes a limit to the distance between pcb board and shell
Position is avoided because the two distance closely causes very much extruding of the button cap to key under normality.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
Claims (6)
1. a kind of full-covering type Waterproof key structure, which is characterized in that including the pcb board with key, shell and key cap assembly；Institute
State shell and be fixedly mounted on top of the pcb board with key side, the shell correspond to the position right above key offer it is logical
Hole；The key cap assembly includes the button cap in through-hole and the sticking part for being covered on hull outside face, the button cap
It is tightly connected with sticking part through interconnecting piece.
2. full-covering type Waterproof key structure according to claim 1, which is characterized in that offered at least on the pcb board
One limit hole, the position that the shell corresponds to limit hole are provided with limited post, and the limited post is inverted cone-shaped structure, back taper
The lower end of structure penetrates in limit hole.
3. full-covering type Waterproof key structure according to claim 1, which is characterized in that the pcb board and shell are through bolt
It is fixedly connected.
4. full-covering type Waterproof key structure according to claim 1, which is characterized in that the button cap, interconnecting piece and patch
Conjunction portion is integrally formed.
5. full-covering type Waterproof key structure according to claim 4, which is characterized in that the key cap assembly is by tetrafluoro rubber
Glue is made.
6. full-covering type Waterproof key structure according to claim 1, which is characterized in that the lateral surface of the shell is provided with
Mounting groove, key cap assembly are located in mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821823261.3U CN208938858U (en) | 2018-11-07 | 2018-11-07 | A kind of full-covering type Waterproof key structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821823261.3U CN208938858U (en) | 2018-11-07 | 2018-11-07 | A kind of full-covering type Waterproof key structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208938858U true CN208938858U (en) | 2019-06-04 |
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ID=66727201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821823261.3U Active CN208938858U (en) | 2018-11-07 | 2018-11-07 | A kind of full-covering type Waterproof key structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208938858U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233921A (en) * | 2019-07-31 | 2019-09-13 | 宇龙计算机通信科技(深圳)有限公司 | A kind of button assembly and mobile phone of handheld device |
-
2018
- 2018-11-07 CN CN201821823261.3U patent/CN208938858U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233921A (en) * | 2019-07-31 | 2019-09-13 | 宇龙计算机通信科技(深圳)有限公司 | A kind of button assembly and mobile phone of handheld device |
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