CN110491705B - Key structure with water drainage function and electronic product - Google Patents
Key structure with water drainage function and electronic product Download PDFInfo
- Publication number
- CN110491705B CN110491705B CN201910911644.9A CN201910911644A CN110491705B CN 110491705 B CN110491705 B CN 110491705B CN 201910911644 A CN201910911644 A CN 201910911644A CN 110491705 B CN110491705 B CN 110491705B
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- key
- elastic sheet
- cavity
- vertical
- transverse
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000012634 fragment Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 abstract description 6
- 241000773945 Trimusculidae Species 0.000 abstract description 3
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000005381 potential energy Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
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
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
-
- 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
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/36—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs
Landscapes
- Push-Button Switches (AREA)
Abstract
The invention discloses a key structure with a water drainage function and an electronic product, comprising a key and a key elastic sheet which are arranged in a key cavity; the key elastic sheet is provided with two vertical elastic sheet parts arranged at intervals and a transverse elastic sheet part respectively connected with the top ends of the two vertical elastic sheet parts; the vertical elastic sheet part is supported between the key and the bottom surface of the key cavity; the transverse elastic sheet part is obliquely arranged downwards, and the outer end of the transverse elastic sheet part is fixed with the inner wall of the key cavity; the vertical elastic sheet part and the transverse elastic sheet part can be elastically deformed by pressing the key; the vertical elastic sheet part and the transverse elastic sheet part recover to deform to reset the key, and accumulated water in the key cavity can be discharged. Above-mentioned button structure, button shell fragment not only can provide ordinary metal shrapnel's resilience function, improves and presses down and feel, can discharge water through the mode of pressing the button many times with ponding that persists in the button cavity simultaneously, prevents that ponding from corroding the button axle with the button contact for a long time, has also avoided ponding to get into inside the product simultaneously.
Description
Technical Field
The present invention relates to a key structure, and more particularly, to a key structure with a drainage function and an electronic product.
Background
Among the present electronic product, the metal shell fragment in the button structure is mostly the disc shape, sets up between inside circuit board of product and physics button, plays functions such as button contact and resilience. As shown in fig. 1, the key 3 is disposed on the product housing 1, and the key dome 4 can be triggered by pressing down the key shaft of the key 3. When the product is used under water, pressing the key can generate a gap to enable water to enter the key cavity 2. But the entering water is not easy to evaporate in the cavity, so that the electrolyte in the water corrodes the key of the product or has an opportunity to enter the interior of the product to corrode a circuit system of the product.
Disclosure of Invention
Based on this, the technical problem to be solved by the present invention is to provide a key structure and an electronic product, which can discharge accumulated water in a key cavity through a key dome.
In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:
a key structure with a water drainage function comprises a key and a key elastic sheet which are arranged in a key cavity; the key elastic sheet is provided with two vertical elastic sheet parts arranged at intervals and a transverse elastic sheet part respectively connected with the top ends of the two vertical elastic sheet parts; the vertical elastic sheet part is supported between the key and the bottom surface of the key cavity; the transverse elastic sheet part is obliquely arranged downwards, and the outer end of the transverse elastic sheet part is fixed with the inner wall of the key cavity; the vertical elastic sheet part and the transverse elastic sheet part can be elastically deformed by pressing the key; the vertical elastic piece part and the transverse elastic piece part recover to deform to enable the key to reset, and accumulated water in the key cavity is discharged.
Furthermore, the key comprises a pressing part and a shaft part connected with the bottom surface of the pressing part; the key elastic piece also comprises a connecting part, the bottom ends of the two vertical elastic piece parts are connected through the connecting part, and the connecting part is provided with a through hole; the shaft part of the key is positioned between the two vertical elastic sheet parts, and the bottom end of the shaft part penetrates through the through hole and extends out of the bottom of the key cavity.
Furthermore, the key elastic sheet also comprises a supporting part connected with the outer side end of the transverse elastic sheet part, the supporting part is arranged along the transverse elastic sheet part in the inclined downward direction, and an included angle is formed between the supporting part and the transverse elastic sheet part; the key comprises a key cavity and is characterized in that first step parts which are arranged inwards are arranged on two sides of the inner wall of the key cavity, and the supporting parts are supported on the first step parts.
Furthermore, a second step part which is arranged inwards is arranged on the side wall of the key cavity on the upper side of the first step part, and the first step part extends inwards along the second step part; the second step part can be abutted against the bottom surface of the pressing part of the key and is used for limiting the pressing stroke of the key.
Furthermore, a third step part is arranged at the bottom of the key cavity, the side surface of the second step part is an inclined surface, and the third step part is arranged at the lower side of the second step part; the button down press with during the butt of second step portion, vertical shell fragment portion deformation, with the top surface edge butt of third step portion.
Furthermore, the top ends of the horizontal elastic sheet part and the vertical elastic sheet part are connected through a contact part, and the contact part is provided with a horizontal plane and is in contact with the bottom surface of the pressing part.
Further, two vertical spring piece portions are of arc structures protruding outwards.
Furthermore, the bottom of the key cavity is provided with an insertion hole, and the bottom end of the shaft part of the key penetrates out of the key cavity through the insertion hole; and a sealing ring is arranged between the shaft part and the jack.
Furthermore, the button spring is of an integrally formed structure.
An electronic product comprises the key structure with the water drainage function.
Compared with the prior art, the invention has the advantages and positive effects that:
according to the key structure, the vertical elastic piece part and the transverse elastic piece part of the key elastic piece can be elastically deformed by pressing the key to cause bending, and the vertical elastic piece part and the transverse elastic piece part convert pressure into potential energy to be stored; when loosening the button, vertical shell fragment portion and horizontal shell fragment portion resume deformation, make the button reset, and simultaneously, vertical shell fragment portion and horizontal shell fragment portion convert potential energy into kinetic energy, promote the ponding in the button cavity and discharge through the gap between button side and the button cavity lateral wall. Through setting up the button shell fragment that has vertical shell fragment portion and horizontal shell fragment portion, not only can provide the resilience function of ordinary metal shrapnel, improve and press down and feel, can discharge water through the mode of pressing the button many times with ponding that persists in the button cavity simultaneously, prevent ponding and long-time and button contact corrosion button axle, also avoided ponding to get into inside the product simultaneously, corrode product circuit system.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a conventional key structure;
FIG. 2 is a first schematic structural diagram of the key structure with water draining function according to the present invention, showing the key in a sprung state;
FIG. 3 is a second schematic structural view of the key structure with water draining function according to the present invention, showing the key pressed down;
FIG. 4 is a schematic structural diagram of a button dome in the button structure with a drainage function according to the present invention;
FIG. 5 is a cross-sectional view of a key structure having a water drain function according to the present invention;
FIG. 6 is a schematic structural view of the shaft portion and the sealing ring of the key in the key structure with a drainage function of the present invention cooperating with the bottom insertion hole of the key cavity;
description of reference numerals:
a housing 1; a key cavity 2; a key 3; a key dome 4;
a housing 100; a key cavity 110; an insertion hole 111; a first step portion 112; a second step portion 113; a third stepped portion 114;
a key 200; a pressing portion 210; a shaft portion 220;
a key dome 300; a vertical tab portion 310; a lateral tab portion 320; a connecting portion 330; a through hole 331; a support part 340; an abutment portion 350;
and a seal ring 400.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 2 to 6, there is shown an embodiment of a button structure having a drainage function according to the present invention. The key structure is arranged on the electronic product. The electronic product has a housing 100, and a key cavity 110 is disposed on the housing 100.
The key structure includes a key 200 and a key dome 300 disposed in the key cavity 110. The key 200 is slidably disposed in the key cavity 110, and the side surface of the key 200 slides up and down along the sidewall of the key cavity 110. In this embodiment, for convenience of description, the direction in which the key 200 slides up and down is defined as a vertical direction; the inner direction of the key cavity 110 is the inner direction, and the outer direction is the outer direction. As shown in fig. 2, the key dome 300 has two vertical dome sections 310 arranged at intervals, and horizontal dome sections 320 connected to the top ends of the two vertical dome sections 310, respectively. The vertical elastic piece portion 310 is supported between the key 200 and the bottom surface of the key cavity 110, that is, the top end of the vertical elastic piece portion 310 is abutted against the top of the key 200, and the bottom end is abutted against the bottom surface of the key cavity 110. The transverse elastic piece 320 is disposed obliquely downward, and the outer end thereof is fixed to the inner wall of the key cavity 110. As shown in fig. 3, pressing the key 200 can make the vertical tab portion 310 and the horizontal tab portion 320 elastically deformed by a force, resulting in bending, and the vertical tab portion 310 and the horizontal tab portion 320 convert the pressure into potential energy to be stored; when the key 200 is released, as shown in fig. 2, the vertical spring piece portion 310 and the horizontal spring piece portion 320 are deformed again, so that the key 200 is reset, and meanwhile, the vertical spring piece portion 310 and the horizontal spring piece portion 320 convert potential energy into kinetic energy to push accumulated water in the key cavity 110 to be discharged through a gap between the side surface of the key 200 and the side wall of the key cavity 110.
Foretell button structure, have vertical shell fragment portion 310 and the button shell fragment 300 of horizontal shell fragment portion 320 through the setting, not only can provide the resilience function of ordinary metal shrapnel, improve and press down and feel, when using under water simultaneously, can discharge the ponding that persists in button cavity 110 through the mode of pressing button 200 many times with water, prevent that ponding from long-time saving in button cavity 110, corrode the button axle with button 200 contact, inside ponding entering product has also been avoided simultaneously, corrode product circuit system.
In this embodiment, as shown in fig. 4, the key 200 includes a pressing portion 210 and a shaft portion 220 connected to a bottom surface of the pressing portion 210. The shaft portion 220 is located at the center of the pressing portion 210. The bottom of the key cavity 110 is provided with a jack 111, and the bottom end of the shaft part 220 of the key 200 penetrates out of the key cavity 110 through the jack 111, extends into the product and is electrically connected with a circuit board inside the product. Further, the key dome 300 further includes a connecting portion 330, the bottom ends of the two vertical dome portions 310 are connected by the connecting portion 330, and the connecting portion 330 is provided with a through hole 331; the shaft portion 220 of the key 200 is located between the two vertical spring portions 310, and the bottom end of the shaft portion 220 extends out of the bottom of the key cavity 110 through the through hole 331. The two vertical spring pieces 310 can be connected into an integral structure through the connecting portion 330, which is convenient for installing the key spring 300. The shaft portion 220 of the key 200 passes through the through hole 331 of the connecting portion 330, so as to limit the key dome 300 and fix the key dome 300. Preferably, the connecting portion 330 is a planar structure, and abuts against the bottom surface of the key cavity 110, so as to improve the stability of the key dome 300. Preferably, the key dome 300 has a symmetrical structure, and the axis of the key 200 is located in the middle of the two vertical dome sections 310, so as to ensure that the key dome 300 is uniformly stressed. In another embodiment, the bottom ends of the two vertical spring pieces 310 may be directly and fixedly connected with the bottom of the key cavity 110, for example, a clamping groove may be formed at the bottom of the key cavity 110, and the bottom ends of the two vertical spring pieces 310 are clamped into the clamping groove to be fixed.
Further, the key dome 300 further includes a support portion 340 connected to an outer end of the lateral dome portion 320. The supporting portion 340 is disposed along the transverse spring portion 320 in a diagonally downward direction, and forms an included angle with the transverse spring portion 320. The first step portion 112 is disposed inwardly at two sides of the inner wall of the key cavity 110, and the supporting portion 340 is supported on the first step portion 112. When the key 200 is pressed downwards, the transverse elastic sheet part 320 is pressed and bent downwards, the inclined supporting part 340 is pressed transversely by the transverse elastic sheet part 320, the supporting part 340 is erected, the force in the vertical direction applied to the key elastic sheet 300 is converted into the horizontal direction, and the key elastic sheet 300 is self-tightened at a fixed position.
In order to prevent the key 200 from being pressed down excessively, as shown in fig. 2, an inwardly-disposed second step portion 113 is disposed on the sidewall of the key cavity 110 above the first step portion 112, and the first step portion 112 extends inwardly along the second step portion 113. When the key 200 is pressed down, the second stepped portion 113 can abut against the bottom surface of the pressing portion 210 of the key 200, and the pressing stroke of the key 200 is limited. The height difference between the second step portion 113 and the first step portion 112 should be greater than or equal to the length of the supporting portion 340, and when the key 200 is pressed down to abut against the first step portion 112, the key dome 300 deforms, and the supporting portion 340 can abut against the sidewall of the key cavity 110 vertically.
In order to reduce the volume of the key cavity 110, a third step portion 114 is disposed at the bottom of the key cavity 110, the side surface of the second step portion 113 is an inclined surface, and the third step portion 114 is disposed at the lower side of the second step portion 113. Through the second step part 113 with the inclined plane, the volume of the key cavity 110 can be reduced, the accumulated water amount is reduced, and accumulated water is convenient to discharge. When key 200 pushes down and second step portion 113 butt, vertical spring piece portion 310 deformation, with the top surface edge butt of third step portion 114, can make more ponding get into between two vertical spring piece portions 310, be favorable to the ponding of key cavity 110 bottommost to discharge.
In order to improve the support stability of the key dome 300, the top ends of the horizontal dome portion 320 and the vertical dome portion 310 are connected by an abutting portion 350, and the abutting portion 350 has a horizontal plane and is in contact with the bottom surface of the pressing portion 210.
In this embodiment, the two vertical elastic pieces 310 are arc structures protruding outward, and when the key 200 is pressed down, the two vertical elastic pieces 310 are bent outward along the arc shapes thereof, that is, the two vertical elastic pieces are away from each other. The structure that keeps away from each other when two vertical shell fragments push down utilizes great deformation space, can store more potential energy for the drainage. As shown in fig. 5, the width of the key dome 300 is slightly smaller than the width of the key cavity 110, so that a larger contact area between the key dome 300 and water is ensured, and thus, more water can be applied in the extrusion process, which is more beneficial to draining accumulated water in the key cavity 110. In another embodiment, the two vertical elastic pieces 310 may also be designed into an arc structure protruding inward, that is, when the key 200 is pressed down, the two vertical elastic pieces 310 are bent inward along the arc shape thereof, that is, the two vertical elastic pieces are close to each other, so that it is required to ensure that the distance between the two vertical elastic pieces 310 cannot be too close to ensure that a certain compression deformation space is provided.
In this embodiment, the key dome 300 is an integrally formed structure, and is formed by bending a strip-shaped metal sheet, and has a simple structure and a low cost. The key dome 300 is a metal dome, preferably made of ultra-thin (thickness range 0.05mm-0.1 mm) and ultra-hard (hardness range HV480-550) stainless steel material.
As shown in fig. 6, in order to ensure the waterproof performance of the key structure, at least one sealing ring 400 is disposed between the shaft portion 220 of the key 200 and the sidewall of the insertion hole 111 at the bottom of the key cavity 110, so as to ensure that water does not enter the product, and meanwhile, water can freely flow through the gap between the key cavity 110 and the key dome 300 in the key cavity 110.
The invention also comprises an electronic product which is provided with the key structure with the water drainage function.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. A key structure with a water drainage function is characterized by comprising a key and a key elastic sheet, wherein the key and the key elastic sheet are arranged in a key cavity; the key elastic sheet is provided with two vertical elastic sheet parts arranged at intervals and a transverse elastic sheet part respectively connected with the top ends of the two vertical elastic sheet parts; the vertical elastic sheet part is supported between the key and the bottom surface of the key cavity; the transverse elastic sheet part is obliquely arranged downwards, and the outer end of the transverse elastic sheet part is fixed with the inner wall of the key cavity; the vertical elastic sheet part and the transverse elastic sheet part can be elastically deformed by pressing the key; the vertical elastic piece part and the transverse elastic piece part recover to deform to enable the key to reset, and accumulated water in the key cavity is discharged.
2. The key structure with water drainage function according to claim 1, wherein said key includes a pressing portion, a shaft portion connected to a bottom surface of the pressing portion; the key elastic piece also comprises a connecting part, the bottom ends of the two vertical elastic piece parts are connected through the connecting part, and the connecting part is provided with a through hole; the shaft part of the key is positioned between the two vertical elastic sheet parts, and the bottom end of the shaft part penetrates through the through hole and extends out of the bottom of the key cavity.
3. The key structure with the function of draining water of claim 2, wherein the key dome further comprises a support portion connected to an outer side end of the transverse dome portion, the support portion being disposed obliquely downward along the transverse dome portion and forming an included angle with the transverse dome portion; the key comprises a key cavity and is characterized in that first step parts which are arranged inwards are arranged on two sides of the inner wall of the key cavity, and the supporting parts are supported on the first step parts.
4. The key structure with the water drainage function according to claim 3, wherein a second step part which is inwardly arranged is provided on the side wall of the key cavity on the upper side of the first step part, and the first step part inwardly protrudes along the second step part; the second step part can be abutted against the bottom surface of the pressing part of the key and is used for limiting the pressing stroke of the key.
5. The key structure with the water drainage function according to claim 4, wherein a third step portion is provided at a bottom of the key cavity, a side surface of the second step portion is a slope, and the third step portion is provided at a lower side of the second step portion; the button down press with during the butt of second step portion, vertical shell fragment portion deformation, with the top surface edge butt of third step portion.
6. The key structure with a water drainage function according to claim 1, wherein the transverse tab portion is connected to a tip end of the vertical tab portion by an abutting portion, and the abutting portion has a horizontal plane and abuts against a bottom surface of the pressing portion.
7. The key structure with a drainage function according to claim 1, wherein the two vertical tab portions are arc-shaped structures protruding outward.
8. The key structure with the water drainage function according to any one of claims 2 to 4, wherein a jack is formed at the bottom of the key cavity, and the bottom end of the shaft part of the key penetrates out of the key cavity through the jack; and a sealing ring is arranged between the shaft part and the jack.
9. The key structure with the water drainage function of claim 1, wherein the key dome is an integrally formed structure.
10. An electronic product comprising the key structure having a water drain function according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910911644.9A CN110491705B (en) | 2019-09-25 | 2019-09-25 | Key structure with water drainage function and electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910911644.9A CN110491705B (en) | 2019-09-25 | 2019-09-25 | Key structure with water drainage function and electronic product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110491705A CN110491705A (en) | 2019-11-22 |
| CN110491705B true CN110491705B (en) | 2021-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910911644.9A Active CN110491705B (en) | 2019-09-25 | 2019-09-25 | Key structure with water drainage function and electronic product |
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| Country | Link |
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| CN (1) | CN110491705B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114078647A (en) * | 2020-08-21 | 2022-02-22 | 北京小米移动软件有限公司 | A key module and terminal equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202502927U (en) * | 2012-03-08 | 2012-10-24 | 纬创资通股份有限公司 | Key module and electronic device with key module |
| CN205723272U (en) * | 2016-06-01 | 2016-11-23 | 重庆华品电子科技有限公司 | A kind of keyboard board with drain function |
| CN209071195U (en) * | 2018-12-29 | 2019-07-05 | 深圳市莱克斯瑞智能家居有限公司 | A kind of elastic slice and key switch |
-
2019
- 2019-09-25 CN CN201910911644.9A patent/CN110491705B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202502927U (en) * | 2012-03-08 | 2012-10-24 | 纬创资通股份有限公司 | Key module and electronic device with key module |
| CN205723272U (en) * | 2016-06-01 | 2016-11-23 | 重庆华品电子科技有限公司 | A kind of keyboard board with drain function |
| CN209071195U (en) * | 2018-12-29 | 2019-07-05 | 深圳市莱克斯瑞智能家居有限公司 | A kind of elastic slice and key switch |
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| Publication number | Publication date |
|---|---|
| CN110491705A (en) | 2019-11-22 |
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Effective date of registration: 20230329 Address after: 18/F, Building 2, Shandong Private Science and Technology Building (Minghui International), No. 39 Shiling Road, Laoshan District, Qingdao City, Shandong Province, 266035 (centralized office area) Patentee after: Qingdao Suiyun Electronic Technology Co.,Ltd. Address before: 266104 Room 308, North Investment Street Service Center, Laoshan District, Qingdao, Shandong. Patentee before: GOERTEK TECHNOLOGY Co.,Ltd. |
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