CN112447428B - Key module with waterproof structure - Google Patents
Key module with waterproof structure Download PDFInfo
- Publication number
- CN112447428B CN112447428B CN201910796286.1A CN201910796286A CN112447428B CN 112447428 B CN112447428 B CN 112447428B CN 201910796286 A CN201910796286 A CN 201910796286A CN 112447428 B CN112447428 B CN 112447428B
- Authority
- CN
- China
- Prior art keywords
- waterproof
- extension arm
- key body
- key
- waterproof ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010276 construction Methods 0.000 claims 2
- 125000004122 cyclic group Chemical group 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 description 12
- 239000007788 liquid Substances 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/04—Cases; Covers
- H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
- H01H13/063—Casings hermetically closed by a diaphragm through which passes an actuating member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
Landscapes
- Push-Button Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention provides a key module with a waterproof structure, which can be assembled to a shell, wherein an annular structure is concavely arranged on the shell, the key module with the waterproof structure comprises a first waterproof ring, a key body and a propping piece, the first waterproof ring is accommodated at the annular structure, the section of the first waterproof ring is U-shaped, the key body is provided with a pressing part and a hollow columnar part, the pressing part is connected with the hollow columnar part, the key body penetrates through the shell, the hollow columnar part penetrates through the annular structure, the pressing part props against the first waterproof ring, the propping piece is provided with an assembling part and a propping part, the propping part is connected with the assembling part, and the assembling part is assembled at the hollow columnar part of the key body and props against the annular structure. The shell used in the invention does not need to be hermetically coated with the key module, and the switch circuit board can be directly arranged in the shell corresponding to the key body, so that the applicability of the invention is improved.
Description
[ Field of technology ]
The present invention relates to a key module, and more particularly to a key module with waterproof structure.
[ Background Art ]
With the popularity of electronic devices, the time and frequency of using the electronic devices are also increasing, so that the demands of users for various peripheral accessories of the electronic devices, such as waterproof performance of key structures, are also increasing.
The waterproof performance of the key module is usually achieved by improving the air/liquid tightness of the housing in which the key module is assembled, for example, the key module is completely covered by a soft film, so that the key module has a waterproof function due to the covering. However, the overall appearance of the key module is greatly limited, and the sense of use of the key module is also affected, so that applicability is limited.
[ Invention ]
The invention provides a key module with a waterproof structure, which can be assembled to a shell, wherein the shell is concavely provided with an annular structure, and the key module with the waterproof structure comprises a first waterproof ring, a key body and a top fastener. The first waterproof ring is accommodated in the annular structure, and the cross section of the first waterproof ring is U-shaped. The key body is provided with a pressing part and a hollow columnar part. The pressing part is connected with the hollow columnar part, the key body penetrates through the shell, the hollow columnar part penetrates through the annular structure, and the pressing part abuts against the first waterproof ring. The propping fastener is provided with an assembling part and a propping part, the propping part is connected with the assembling part, the assembling part is assembled on the hollow columnar part of the key body, and the propping part is propped against the annular structure.
The shell body applied by the key module with the waterproof structure does not need to be hermetically coated with the key module, and the switch circuit board can be directly arranged in the shell body corresponding to the key body. Therefore, the key module with the waterproof structure can improve applicability.
[ Description of the drawings ]
Fig. 1 is a schematic perspective view of a key module with a waterproof structure according to an embodiment of the invention.
Fig. 2 is an exploded perspective view of an embodiment of a key module with a waterproof structure according to the present invention.
Fig. 3 is a schematic sectional view of a key module with a waterproof structure according to an embodiment of the invention.
Fig. 4 is a partial enlarged view of the circled portion 4 in fig. 3.
Fig. 5 is a schematic diagram illustrating an operation of a key module with a waterproof structure according to an embodiment of the invention.
[ Detailed description ] of the invention
Please refer to fig. 1 to 4 in conjunction. Fig. 1 is a schematic perspective view of a key module with a waterproof structure according to an embodiment of the invention. Fig. 2 is an exploded perspective view of an embodiment of a key module with a waterproof structure according to the present invention. Fig. 3 is a schematic sectional view of a key module with a waterproof structure according to an embodiment of the invention. Fig. 4 is a partial enlarged view of the circled portion 4 in fig. 3. The key module with the waterproof structure can be assembled to the shell C. In an embodiment, the housing C may be a housing C of an electronic device, and the electronic device includes a circuit board B, and the circuit board B includes a switch B1 and is disposed in the housing C. The electronic device may be, but is not limited to, a medical device controller, a mechanical device controller, a display, etc., that will provide physical keys for control.
Referring to fig. 1 to 4, the housing C is concavely provided with an annular structure C1, and the key module having a waterproof structure includes a first waterproof ring 10, a key body 20 and a top fastener 30. The first waterproof ring 10 is accommodated in the annular structure C1, and a cross section of the first waterproof ring 10 is U-shaped. The key body 20 has a pressing portion 21 and a hollow column portion 22, the pressing portion 21 is connected to the hollow column portion 22, the key body 20 is disposed through the casing C, the hollow column portion 22 passes through the annular structure C1, and the pressing portion 21 abuts against the first waterproof ring 10. The push button member 30 has an assembling portion 31 and a pushing portion 32, the pushing portion 32 is connected to the assembling portion 31, the assembling portion 31 is assembled to the hollow column portion 22 of the key body 20, and the pushing portion 32 is pushed against the annular structure C1.
Referring to fig. 3, in the present embodiment, the position of the ring structure C1 corresponds to the position of the switch B1 on the circuit board B, so that the key body 20 can be axially displaced relative to the switch B1 to trigger the switch B1 after being assembled on the ring structure C1.
Referring to fig. 2 and fig. 3, in the present embodiment, the annular structure C1 is a circular ring structure, and the annular structure C1 has an inner peripheral surface C11 and an outer peripheral surface C12 opposite to each other, the outer peripheral surface C12 is a cylindrical surface, and the inner peripheral surface C11 is a stepped surface with a height difference. In this embodiment, one end of the inner peripheral surface C11 surrounds the set opening C13, and the set opening C13 may be, but is not limited to, an opening having a circular contour.
Referring to fig. 3 and fig. 4, in the present embodiment, the inner peripheral surface C11 includes a first guiding surface C111, an inclined surface C112 and a second guiding surface C113 sequentially connected. Specifically, the housing C has a surface C2, the first guiding surface C111 is perpendicular to the engaging surface C2, and the inclined surface C112 is inclined compared to the first guiding surface C111. Specifically, the first guide surface C111 of the inner peripheral surface C11 surrounds a range having a first inner diameter D1, and the second guide surface C113 surrounds a range having a second inner diameter D2. Here, the first inner diameter D1 is larger than the second inner diameter D2, whereby the inner peripheral surface C11 becomes a stepped surface tapered from the set port C13 to the other end.
Referring to fig. 3, in the present embodiment, the first waterproof ring 10 is a ring-shaped structure made of flexible material and has a U-shaped cross section. In this embodiment, the first waterproof ring 10 is accommodated in the annular structure C1 and abuts against the inclined surface C112 of the inner peripheral surface C11.
Referring to fig. 3 and fig. 4, in the present embodiment, the first waterproof ring 10 includes a first extension arm 11, a connection portion 12 and a second extension arm 13 connected in sequence. The two ends of the connecting part 12 are respectively connected with one ends of the first extension arm 11 and the second extension arm 13, and the other ends of the first extension arm 11 and the second extension arm 13 extend towards the same direction. In this embodiment, the opening 14 is normally formed between the other ends of the first extension arm 11 and the second extension arm 13 when no force is applied. Here, the material of the first waterproof ring 10 may be selected so that the opening 14 is normally formed between the other ends of the first extension arm 11 and the second extension arm 13, and the opening 14 and the connection portion 12 may elastically displace between the first extension arm 11 and the second extension arm 13 of the first waterproof ring 10. The first waterproof ring 10 is abutted against the inclined plane C112 by the first extension arm 11, and the opening 14 is closer to the assembling opening C13 than the connecting portion 12.
Referring to fig. 2 to 5, in the present embodiment, the key body 20 has an external shape substantially corresponding to the shape of the inner peripheral surface C11 of the annular structure C1. Specifically, the hollow columnar portion 22 has a hollow cylindrical structure and has a hollow portion 221, and the hollow columnar portion 22 is connected to one surface of the pressing portion 21. The pressing portion 21 has a first outer diameter L1, the hollow cylindrical portion 22 has a second outer diameter L2, the first outer diameter L1 is larger than the second outer diameter L2, and an engagement surface 23 is provided between the pressing portion 21 and the hollow cylindrical portion 22, and the engagement surface 23 has a slope compared with an outer surface of the hollow cylindrical portion 22. In this embodiment, the hollow pillar portion 22 of the key body 20 passes through the second guiding surface C113 of the inner peripheral surface C11 of the annular structure C1, and the engaging surface 23 of the key body 20 abuts against the second extension arm 13 of the first waterproof ring 10.
Accordingly, the key body 20 is supported by the first waterproof ring 10 and keeps a distance from the annular structure C1 and the switch B1 as a space required for displacement when the key body 20 is stressed. The pressing portion 21 of the key body 20 is pressed to drive the key body 20 to press against the first waterproof ring 10 to generate displacement, and the engagement surface 23 of the key body 20 is pressed against the second extension arm 13 to approach the first extension arm 11, so that the opening 14 between the first extension arm 11 and the second extension arm 13 is gradually reduced, and in the process of pressing the first waterproof ring 10 by the displacement of the key body 20, the flexibility of the first waterproof ring 10 can be fed back to the key body 20 to enable the key body 20 to have elastic reset feeling. In addition, since the opening 14 of the first waterproof ring 10 is reduced by pressing the first waterproof ring 10 when the key body 20 is pressed down, the reduced opening 14 of the first waterproof ring 10 can improve the sealing performance between the key body 20 and the inside of the casing C when the key body 20 is pressed down, so as to prevent liquid or dust from entering the inside of the casing C.
In addition, when the key body 20 is not in use, the opening 14 of the first waterproof ring 10 is in an open state, so that even if there is a possibility that liquid inadvertently invades between the housing C and the key body 20 through the assembly opening C13 of the housing C, the liquid may flow into between the first extension arm 11 and the second extension arm 13 of the first waterproof ring 10 through the opening 14. Here, since the opening 14 of the first waterproof ring 10 faces the direction of the assembling opening C13, the key body 20 presses against the second extension arm 13 of the first waterproof ring 10 when the key body 20 is pressed next time, and the second extension arm 13 presses the liquid between the first extension arm 11 and the second extension arm 13 in the process of approaching the first extension arm 11, so that the liquid can be extruded from the opening 14, thereby avoiding the water accumulation.
In addition, referring to fig. 5, since the first outer diameter L1 of the pressing portion 21 of the key body 20 is larger than the second outer diameter L2 of the hollow cylindrical portion 22 in the present embodiment, the intrusion of liquid or dust into the interior of the casing C is primarily stopped, so as to achieve the primary waterproof and dustproof effects.
Referring to fig. 2 and 3, in the present embodiment, the top fastener 30 has a hollow cylindrical structure with two ends penetrating, and the outer diameter of the top portion 32 is larger than that of the assembly portion 31. In this embodiment, the fastening member 30 is inserted into the hollow portion 221 of the key body 20 through the assembling portion 31, and the abutting portion 32 abuts against an end of the annular structure C1 opposite to the assembling opening C13. Here, the assembling portion 31 of the fastening member 30 and the hollow portion 221 of the key body 20 may be assembled by, but not limited to, tight fitting, or may be assembled by adhesive.
Referring to fig. 2 and 3, in the present embodiment, the key module with a waterproof structure may further include a second waterproof ring 40, where the second waterproof ring 40 has a circular ring structure. In this embodiment, the second waterproof ring 40 is combined with the top fastening member 30, specifically, the second waterproof ring 40 is sleeved around the outer periphery of the assembly portion 31 of the top fastening member 30 and abuts against the abutting portion 32, and the second waterproof ring 40 is fixed to the abutting portion 32 to displace synchronously with the top fastening member 30. In this case, in a normal state where the key body 20 is not stressed, the second waterproof ring 40 is abutted against the annular structure C1 along with the top fastener 30, thereby providing a second waterproof/dustproof effect between the key body 20 and the inside of the casing C. When the key body 20 is pressed, the second waterproof ring 40 is displaced along with the top fastener 30 to separate the annular structure C1, in which case the gas originally existing between the first waterproof ring 10 and the second waterproof ring 40 is exhausted, so as to avoid a vacuum state and ensure that the key body 20 can be normally opened and closed.
Referring to fig. 3 and 5, in the present embodiment, the central position of the hollow portion 221 of the hollow cylindrical portion 22 of the key body 20 further has a top post 222, and the top post 222 extends along the axial direction and toward the switch B1. Here, when the key body 20 is pushed to displace in the axial direction, the key body 20 triggers the switch B1 with the jack 222. Therefore, the stroke of the trigger switch B1 of the key body 20 can be changed by setting different lengths of the top posts 222, so as to adapt to the requirements of key modules with different trigger strokes.
Referring to fig. 3, in the present embodiment, the key module with a waterproof structure may further include an elastic element 50, where the elastic element 50 is disposed between the key body 20 and the circuit board B, so as to provide the elastic restoring force of the key body 20 more reliably. In this embodiment, the elastic element 50 may be a ring spring, the elastic element 50 is sleeved on the switch B1 and the top post 222, and one end of the elastic element 50 abuts against the circuit board B, and the other end abuts against the bottom surface of the hollow portion 221 of the hollow cylindrical portion 22 of the key body 20. Therefore, the elastic element 50 can simultaneously play a role in supporting the key body 20, ensure that the key body 20 does not randomly tilt and deflect when being stressed, and improve the stability in use.
Although the present invention has been described with reference to the above embodiments, it should be understood that the invention is not limited thereto, but rather is capable of modification and variation without departing from the spirit and scope of the present invention.
Claims (7)
1. The utility model provides a button module with waterproof construction, but the group is established to a casing, and this casing is concave to be equipped with a cyclic annular structure, and this cyclic annular structure has a group to establish the mouth, its characterized in that, this button module with waterproof construction includes:
the first waterproof ring is accommodated in the annular structure, the cross section of the first waterproof ring is U-shaped and provided with an opening, and the opening faces the direction of the set of openings;
The key body is provided with a pressing part and a hollow columnar part, the pressing part is connected with the hollow columnar part, the key body penetrates through the shell, the hollow columnar part penetrates through the annular structure, the pressing part is propped against the first waterproof ring, and the first waterproof ring is positioned between the shell and the key body; and
The pushing fastener is provided with an assembling part and a pushing part, the pushing part is connected with the assembling part, the assembling part is arranged on the hollow columnar part of the key body in a group mode, and the pushing part is pushed against the annular structure;
the annular structure is provided with an inclined plane, and the first waterproof ring is arranged on the inclined plane;
The first waterproof ring comprises a first extension arm, a connecting part and a second extension arm which are connected in sequence, wherein two ends of the connecting part are respectively connected with one ends of the first extension arm and one end of the second extension arm, the other ends of the first extension arm and the second extension arm extend towards the same direction, and the first waterproof ring is abutted against the inclined plane by the first extension arm;
The opening is arranged between the other ends of the first extension arm and the second extension arm, and the opening is close to the group of setting openings compared with the connecting part.
2. The key module with waterproof structure of claim 1, further comprising a second waterproof ring disposed on the supporting portion.
3. The key module with waterproof structure of claim 1, wherein a joint surface is arranged between the pressing part and the hollow column part, the joint surface has a slope, and the joint surface is abutted against the second extension arm.
4. The key module with waterproof structure of claim 1, further comprising a circuit board, wherein the circuit board comprises a switch, the circuit board is disposed on the housing, and the key body is axially displaceable relative to the switch.
5. The key module with waterproof structure of claim 4, further comprising an elastic element disposed between the key body and the circuit board.
6. The key module with waterproof structure of claim 4, wherein the hollow column portion of the key body further has a jack extending toward the switch.
7. The key module with waterproof structure of claim 1, wherein the pressing portion has a first outer diameter, the hollow column portion has a second outer diameter, and the first outer diameter is larger than the second outer diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910796286.1A CN112447428B (en) | 2019-08-27 | 2019-08-27 | Key module with waterproof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910796286.1A CN112447428B (en) | 2019-08-27 | 2019-08-27 | Key module with waterproof structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112447428A CN112447428A (en) | 2021-03-05 |
| CN112447428B true CN112447428B (en) | 2024-05-14 |
Family
ID=74741497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910796286.1A Active CN112447428B (en) | 2019-08-27 | 2019-08-27 | Key module with waterproof structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112447428B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11224558A (en) * | 1998-02-04 | 1999-08-17 | Asahi Optical Co Ltd | Waterproof push-button switch |
| CN103915271A (en) * | 2013-01-08 | 2014-07-09 | 华晶科技股份有限公司 | Waterproof button module and electronic device comprising same |
| CN205376352U (en) * | 2015-11-26 | 2016-07-06 | 深圳市财富之舟科技有限公司 | Waterproof button of mobile terminal |
| CN105845479A (en) * | 2015-01-16 | 2016-08-10 | 神讯电脑(昆山)有限公司 | Waterproof key structure |
| CN106024465A (en) * | 2016-07-07 | 2016-10-12 | 温州国好机电科技有限公司 | Waterproof knob switch |
| CN107887210A (en) * | 2017-12-18 | 2018-04-06 | 深圳市宝尔爱迪科技有限公司 | A kind of waterproof side press-key structure and the waterproof mobile phone using the structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM354841U (en) * | 2008-08-22 | 2009-04-11 | Wistron Corp | Waterproof pushbutton, and the assembly of waterproof pushbutton and electronic device housing |
| TWI628991B (en) * | 2015-07-21 | 2018-07-01 | 華碩電腦股份有限公司 | Waterproof casing and electronic device |
-
2019
- 2019-08-27 CN CN201910796286.1A patent/CN112447428B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11224558A (en) * | 1998-02-04 | 1999-08-17 | Asahi Optical Co Ltd | Waterproof push-button switch |
| CN103915271A (en) * | 2013-01-08 | 2014-07-09 | 华晶科技股份有限公司 | Waterproof button module and electronic device comprising same |
| CN105845479A (en) * | 2015-01-16 | 2016-08-10 | 神讯电脑(昆山)有限公司 | Waterproof key structure |
| CN205376352U (en) * | 2015-11-26 | 2016-07-06 | 深圳市财富之舟科技有限公司 | Waterproof button of mobile terminal |
| CN106024465A (en) * | 2016-07-07 | 2016-10-12 | 温州国好机电科技有限公司 | Waterproof knob switch |
| CN107887210A (en) * | 2017-12-18 | 2018-04-06 | 深圳市宝尔爱迪科技有限公司 | A kind of waterproof side press-key structure and the waterproof mobile phone using the structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112447428A (en) | 2021-03-05 |
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