CN211455571U - Aviation light guide plate button waterproof construction - Google Patents
Aviation light guide plate button waterproof construction Download PDFInfo
- Publication number
- CN211455571U CN211455571U CN201922169443.4U CN201922169443U CN211455571U CN 211455571 U CN211455571 U CN 211455571U CN 201922169443 U CN201922169443 U CN 201922169443U CN 211455571 U CN211455571 U CN 211455571U
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- Prior art keywords
- light guide
- guide plate
- key
- keycap
- shoulder
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Abstract
The utility model discloses a waterproof structure of aviation light guide plate keys, which comprises a printed circuit board; the light guide plate is arranged above the printed circuit board, a panel groove which is opened downwards is formed on the bottom surface of the light guide plate, and a panel through hole is formed on the top surface of the light guide plate; the key body is provided with a key cap part inside the panel through hole and a key column part inside the panel groove, and the key cap part corresponds to the key cap shoulder; a sealing gasket surrounding along the perimeter of the keycap portion and disposed between the bottom surface of the faceplate recess and the top surface of the keycap shoulder; and the reset reed is arranged in the panel groove, and the reset reed is positioned between the key column part and the printed circuit board. The beneficial effects of the utility model reside in that: the sealing washer can be used for effectively filling the gap between the light guide plate and the key body, so that external liquid or water vapor can not enter the light guide plate through the gap.
Description
Technical Field
The utility model relates to a light guide plate in the airborne equipment, especially, an aviation light guide plate button waterproof construction.
Background
Referring to fig. 1, in order to ensure that the key is not jammed during pressing and rebounding, a certain clearance is ensured between the panel 1 and the keycap shoulder 3 on the key 2 in the conventional key-type light guide plate. When the key 2 is in a free state, due to the supporting effect of the reed 4 below the key 2, the convex shoulder 3 of the keycap is abutted against the panel 1 to reduce the moving gap, and a small amount of liquid existing in the moving gap is limited from entering the light guide plate. As shown in fig. 2, when a large amount of liquid is accumulated on the surface of the product, or the moisture is sufficient, the above measures cannot effectively protect the product, and the liquid enters the inside of the light guide plate through the movable gap (along the arrow direction in the figure), so that components inside the light guide plate are directly exposed to the corrosive water mist or the liquid, which affects the service life.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that liquid or steam can enter the inside of the light guide plate from the movable gap between the light guide plate and the button in the prior art, and providing a novel aviation light guide plate button waterproof structure.
In order to realize the purpose, the technical scheme of the utility model is as follows: a waterproof structure for aviation light guide plate key comprises,
a printed circuit board;
the light guide plate is arranged above the printed circuit board, the bottom surface of the light guide plate is in surface contact with the top surface of the printed circuit board, a panel groove with a downward opening is formed in the bottom surface of the light guide plate, and a panel through hole extending downwards to the bottom surface of the panel groove is formed in the top surface of the light guide plate;
the key body is provided with a keycap part inside the panel through hole and a key column part inside the panel groove, the keycap part is fixedly connected with the key column part, the keycap part is correspondingly provided with a keycap convex shoulder, the keycap convex shoulder extends outwards from the outer peripheral surface of the keycap part along the radial direction, and the bottom surface of the panel groove is vertically opposite to the top surface of the keycap convex shoulder;
a sealing gasket surrounding along the perimeter of the keycap portion and disposed between the bottom surface of the faceplate recess and the top surface of the keycap shoulder; and the number of the first and second groups,
the reset reed is arranged in the panel groove and positioned between the key column part and the printed circuit board, and the reset reed provides upward elasticity for the key body, so that the key cap shoulder always pushes the sealing washer against the bottom surface of the panel groove.
As an optimal scheme of the aviation light guide plate key waterproof structure, the sealing washer is made of silica gel foam.
The key cap part, the key cap convex shoulder and the panel through hole have a common axis, the outer diameter of the key cap convex shoulder is larger than the inner diameter of the panel through hole, the inner diameter of the panel through hole is larger than the outer diameter of the key cap part, the inner circumferential surface of the sealing washer is in surface contact with the outer circumferential surface of the key cap part, and the outer circumferential surface of the sealing washer is overlapped with the outer circumferential surface of the key cap convex shoulder in the vertical direction.
Compared with the prior art, the beneficial effects of the utility model reside in at least: the sealing washer can be used for effectively filling a gap generated between the light guide plate and the key body, so that external liquid or water vapor cannot enter the light guide plate through the gap; the waterproof structure has the characteristics of small occupied space, simple implementation, low cost, wide application range and suitability for most key-type light guide plates. And aiming at the existing light guide plate product, the transformation cost is low, the transformation scheme is simple, and the risk is small.
Drawings
Fig. 1 is a schematic structural diagram of the prior art.
Fig. 2 is a schematic diagram of the prior art.
Fig. 3 is a schematic structural diagram of an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a sealing gasket according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail below with reference to the accompanying drawings by way of specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
Referring to fig. 3 to 4, a waterproof structure for an aviation light guide plate key is shown. The waterproof structure mainly comprises a printed circuit board 1, a light guide plate 2, a key body 3, a sealing washer 4, a reset reed 5 and the like.
The light guide plate 2 is disposed above the printed circuit board 1. The bottom surface of the light guide plate 2 is in surface contact with the top surface of the printed circuit board 1. A panel groove 21 opened downward is formed on the bottom surface of the light guide plate 2. A panel penetration hole 22 extending downward to the bottom surface of the panel groove 21 is formed on the top surface of the light guide plate 2.
The key body 3 has a key top 31 inside the panel through hole 22 and a key post 32 inside the panel groove 21. The keycap portion 31 is fixedly connected to the stud portion 32. The key cap part 31 is provided with a key cap shoulder 33. The key cap shoulder 33 extends radially outward from the outer peripheral surface of the key cap part 31, and the bottom surface of the faceplate recess 21 is opposite to the top surface of the key cap shoulder 33. The key cap part 31, the key cap shoulder 33 and the faceplate through hole 22 all have a common axis. The keycap shoulder 33 has an outer diameter greater than the inner diameter of the faceplate aperture 22. The panel penetration hole 22 has an inner diameter larger than an outer diameter of the keycap portion 31. Preferably, the keycap portion 31, the keycap shoulder 33, and the key post portion 32 are integrally formed, such as by injection molding.
The reset spring 5 is placed inside the panel recess 21 and the reset spring 5 is located between the stud part 32 and the printed circuit board 1. The reset reed 5 provides upward elastic force to the key body 3, so that the keycap shoulder always pushes the sealing washer 4 against the bottom surface of the panel groove 21, that is, the sealing washer 4 is always compressed no matter the key body 3 is in a free state or a pressed state. Utilize seal ring 4 can fill effectively the light guide plate 2 with the gap that produces between the button body 3 for outside liquid or steam can't get into through the gap the inside of light guide plate 2 guarantees the inside components and parts of light guide plate 2 normally work.
The above description is only for the embodiment of the present emergency new model, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (3)
1. A waterproof structure for aviation light guide plate keys is characterized in that the structure comprises,
a printed circuit board;
the light guide plate is arranged above the printed circuit board, the bottom surface of the light guide plate is in surface contact with the top surface of the printed circuit board, a panel groove with a downward opening is formed in the bottom surface of the light guide plate, and a panel through hole extending downwards to the bottom surface of the panel groove is formed in the top surface of the light guide plate;
the key body is provided with a keycap part inside the panel through hole and a key column part inside the panel groove, the keycap part is fixedly connected with the key column part, the keycap part is correspondingly provided with a keycap convex shoulder, the keycap convex shoulder extends outwards from the outer peripheral surface of the keycap part along the radial direction, and the bottom surface of the panel groove is vertically opposite to the top surface of the keycap convex shoulder;
a sealing gasket surrounding along the perimeter of the keycap portion and disposed between the bottom surface of the faceplate recess and the top surface of the keycap shoulder; and the number of the first and second groups,
the reset reed is arranged in the panel groove and positioned between the key column part and the printed circuit board, and the reset reed provides upward elasticity for the key body, so that the key cap shoulder always pushes the sealing washer against the bottom surface of the panel groove.
2. The aviation light guide plate key waterproof structure as claimed in claim 1, wherein the sealing washer is made of silica gel foam.
3. The aviation light guide plate key waterproof structure as claimed in claim 1, wherein the key cap part, the key cap shoulder and the faceplate through hole have a common axis, the outer diameter of the key cap shoulder is larger than the inner diameter of the faceplate through hole, the inner diameter of the faceplate through hole is larger than the outer diameter of the key cap part, the inner circumferential surface of the sealing washer is in surface contact with the outer circumferential surface of the key cap part, and the outer circumferential surface of the sealing washer is vertically overlapped with the outer circumferential surface of the key cap shoulder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922169443.4U CN211455571U (en) | 2019-12-06 | 2019-12-06 | Aviation light guide plate button waterproof construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922169443.4U CN211455571U (en) | 2019-12-06 | 2019-12-06 | Aviation light guide plate button waterproof construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211455571U true CN211455571U (en) | 2020-09-08 |
Family
ID=72304740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922169443.4U Active CN211455571U (en) | 2019-12-06 | 2019-12-06 | Aviation light guide plate button waterproof construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211455571U (en) |
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2019
- 2019-12-06 CN CN201922169443.4U patent/CN211455571U/en active Active
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