CN214588541U - Ultra-thin metal shrapnel key switch - Google Patents
Ultra-thin metal shrapnel key switch Download PDFInfo
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- CN214588541U CN214588541U CN202120721398.3U CN202120721398U CN214588541U CN 214588541 U CN214588541 U CN 214588541U CN 202120721398 U CN202120721398 U CN 202120721398U CN 214588541 U CN214588541 U CN 214588541U
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Abstract
The utility model discloses an ultra-thin metal elastic piece key switch, which comprises a base body, wherein a circuit board is arranged at the bottom of the inner cavity of the base body, a first fixed block is arranged on the circuit board, a first pressing elastic piece is fixed on the first fixed block, and an auxiliary contact block is fixed at the lower end of the first pressing elastic piece; the upper part of the substrate protruding is a key area, the top of the key area is a key, the side wall of the key area is provided with a protective block, the bottom of the key area is a metal elastic sheet, the metal elastic sheet is fixed on the protective block through a second fixing block, a first elastic block is fixed at the bottom end of the metal elastic sheet, a second elastic block is fixed at the top end of the metal elastic sheet, and a second pressing elastic sheet is fixed above the second elastic block through the second fixing block; the exterior of the basal body is covered with a resistance layer, and the exterior of the resistance layer is covered with a waterproof film. The utility model discloses guaranteed the use sense of touch of button and taken into account frivolous again, possessed waterproof anticreep performance, increased the key switch security, solved the problem that metal shrapnel life is low.
Description
Technical Field
The utility model relates to a key switch especially relates to an ultra-thin metal shrapnel key switch.
Background
With the development of electronic technology, the variety of key switches is increasing, and the application range is quite wide, and at present, metal dome key switches are widely applied to products such as mobile phones, remote controllers, and the like, and because the size of such switches is quite small, short, light, thin, and therefore, the metal dome key switches can be applied to electronic devices or instruments with limited space or only small or micro switches, such as industrial applications of alarm devices, 3C electronic products or micro computers, and the like. When the switch is used, the switch can be switched on by lightly pressing the switch button, and when the hand is released, the switch is switched off, and the internal structure of the switch is switched on and off by means of the elastic force of the metal elastic sheet.
However, the existing metal dome keyswitch is too high for satisfying the touch feeling, resulting in the thickness thickening of the product, not conforming to the requirements of people for lighter and thinner characteristics of electronic products, and simultaneously, the heightened keyswitch can also make the key tone decibel when pressing high, and the blind pursuit of frivolousness can influence the touch feeling of keyswitch, and the existing metal dome keyswitch does not give consideration to the touch feeling and frivolousness, but also considers the waterproof and anti-leakage performance of the switch, and the existing metal dome can cause the elasticity of the dome to decline gradually due to repeated pressing, and the service life is too short.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides an ultra-thin metal shrapnel key switch.
In order to solve the technical problem, the utility model discloses a technical scheme is: an ultrathin metal elastic sheet key switch comprises a base body, wherein the base body is convex, a circuit board is arranged at the bottom of an inner cavity of the base body, a first fixing block is arranged on the circuit board, a first pressing elastic sheet is fixed on the first fixing block, and an auxiliary contact block is fixed at the lower end of the first pressing elastic sheet;
the upper part of the substrate protruding is a key area, the top of the key area is a key, the side wall of the key area is provided with a protective block, the bottom of the key area is a metal elastic sheet, the metal elastic sheet is fixed on the protective block through a second fixing block, a first elastic block is fixed at the bottom end of the metal elastic sheet, a second elastic block is fixed at the top end of the metal elastic sheet, and a second pressing elastic sheet is fixed above the second elastic block through the second fixing block;
the exterior of the basal body is covered with a resistance layer, and the exterior of the resistance layer is covered with a waterproof film.
Furthermore, a fixed block includes two, and a press the shell fragment and fix between two fixed blocks.
Further, the protection piece includes two, and two protection pieces are fixed respectively on the both sides inner wall according to the key-press district, and No. two fixed blocks include two, and No. two fixed blocks are fixed respectively in the lower part of two protection pieces, and metal shrapnel and No. two are pressed the shell fragment and are all set up between No. two fixed blocks.
Furthermore, the top end of the protection block is a stepped bulge, the left end and the right end of the key are also provided with stepped bulges, and the bulges at the top end of the protection block are matched with the bulges at the end part of the key.
Furthermore, the bottom of the protection block is provided with a groove, one end of the second fixing block, which is not connected with the metal elastic sheet, is provided with a protruding block, and the protruding block is matched with the groove.
Furthermore, the first pressing elastic sheet, the auxiliary contact block, the metal elastic sheet, the second elastic block and the second pressing elastic sheet are coaxially arranged.
Furthermore, the second elastic block is a hemispherical block protruding upwards, and the auxiliary contact block is a hemispherical block protruding downwards.
The utility model discloses a two-layer design, prolonged the actual distance of pressing of button, improved key switch's sense of touch to it is little to have guaranteed that the upper strata that exposes externally is protruding, and whole very frivolous, has both guaranteed the sense of touch and has taken into account frivolousness, simultaneously, the design of water proof membrane and resistance layer makes key switch possess waterproof anticreep performance, has increased the security that key switch used; in addition, the design of hemispherical No. two elastic blocks and auxiliary contact block when the help is pressed the shell fragment and is kick-backed, has still guaranteed that it avoids the problem that the life reduces because the dynamics of deforming for a long time is too big.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an enlarged schematic view of a connection structure of the protection block, the key and the second fixing block.
In the figure: 1. a substrate; 2. a circuit board; 3. a first fixed block; 4. pressing the elastic sheet; 5. an auxiliary contact block; 6. pressing a key; 7. a protection block; 8. a metal spring sheet; 9. a second fixed block; 10. a first elastic block; 11. a second elastic block; 12. pressing the elastic sheet II; 13. a resistive layer; 14. a water-resistant film; 71. a groove; 91. and (4) a convex block.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 shows an ultra-thin metal dome keypad switch, including base member 1, the outside of base member 1 is covered with resistive layer 13, the outside of resistive layer 13 is covered with water proof membrane 14, base member 1 is convex, the bottom of the inner chamber of base member 1 is installed circuit board 2, install No. one fixed block 3 on circuit board 2, No. one fixed block 3 includes two, No. one fixed block 3 is fixed with No. one and presses shell fragment 4, No. one presses shell fragment 4 and fixes between two No. one fixed blocks, the lower extreme of pressing shell fragment 4 is fixed with auxiliary contact block 5, auxiliary contact block 5 is the downward bellied hemisphere shape;
the upper part of the substrate 1 in a protruding mode is a key area, the top of the key area is a key 6, protective blocks 7 are arranged on the side wall of the key area, the protective blocks 7 comprise two protective blocks, the two protective blocks are respectively fixed on the inner walls of the two sides of the key area, the bottom of the key area is a metal elastic sheet 8, the metal elastic sheet 8 is fixed on the protective blocks 7 through a second fixed block 9, the second fixed block 9 comprises two protective blocks, the two second fixed blocks are respectively fixed on the lower parts of the two protective blocks, a first elastic block 10 is fixed at the bottom end of the metal elastic sheet 8, a second elastic block 11 is fixed at the top end of the metal elastic sheet 8, the second elastic block 11 is in a hemispherical shape with an upward bulge, a second pressing elastic sheet 12 is fixed above the second elastic block 11 through the second fixed block 9, and the metal elastic sheet 8 and the second pressing elastic sheet 12 are both arranged between the two second fixed blocks;
the first pressing elastic sheet 4, the auxiliary contact block 5, the metal elastic sheet 8, the second elastic sheet 11 and the second pressing elastic sheet 12 are coaxially arranged;
as shown in fig. 2, the top end of the protection block 7 is a stepped protrusion, the left end and the right end of the key 6 are also provided with stepped protrusions, the protrusion on the top end of the protection block 7 is matched with the protrusion on the end of the key 6, the bottom of the protection block 7 is provided with a groove 71, one end of the second fixing block 9, which is not connected with the metal elastic sheet 8, is provided with a protrusion block 91, and the protrusion block 91 is matched with the groove 71.
The utility model discloses when in actual use, the bellied part of base member 1 is in the outside of electronic product, and the latter half of base member 1 is in electronic product's inside, ensures whole frivolous when using.
The utility model discloses when the installation, install the circuit board in the inner chamber bottom of base member earlier, No. one fixed block on the installation circuit board afterwards presses the shell fragment with one, inserts the recess of protection piece and the arch of No. two fixed blocks mutually afterwards, fixes the protection piece at the suitable position that the base member pressed the key region again, fixes the button on the protection piece again, carries out the covering of resistance layer and water proof membrane afterwards and establishes.
When the key is pressed, the second pressing elastic sheet is stressed to bend downwards and contacts the second elastic block, then the second elastic block transmits the pressing force to the metal elastic sheet, the metal elastic sheet bends downwards, so that the first elastic block at the lower end of the metal elastic sheet is displaced downwards, the first elastic block contacts the first pressing elastic sheet, so that the first pressing elastic sheet bends downwards, the auxiliary contact block moves downwards and contacts the corresponding position on the circuit board, and the switch is switched on; when the key is released, the pressing force disappears, all the elastic sheets rebound, and the switch is switched off.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and the technical personnel in the technical field are in the present invention, which can also belong to the protection scope of the present invention.
Claims (7)
1. The utility model provides an ultra-thin metal shrapnel key switch, includes base member (1), its characterized in that: the base body (1) is convex, the bottom of an inner cavity of the base body (1) is provided with the circuit board (2), the circuit board (2) is provided with the first fixing block (3), the first pressing elastic sheet (4) is fixed on the first fixing block (3), and the lower end of the first pressing elastic sheet (4) is fixed with the auxiliary contact block (5);
the upper part of the protrusion of the base body (1) is a key area, the top of the key area is a key (6), the side wall of the key area is provided with a protective block (7), the bottom of the key area is a metal elastic sheet (8), the metal elastic sheet (8) is fixed on the protective block (7) through a second fixing block (9), the bottom end of the metal elastic sheet (8) is fixed with a first elastic block (10), the top end of the metal elastic sheet (8) is fixed with a second elastic block (11), and a second pressing elastic sheet (12) is fixed above the second elastic block (11) through the second fixing block (9);
the exterior of the base body (1) is covered with a resistance layer (13), and the exterior of the resistance layer (13) is covered with a waterproof film (14).
2. The ultra-thin metal dome keyswitch of claim 1, wherein: the first fixing blocks (3) comprise two, and the first pressing elastic sheet (4) is fixed between the two first fixing blocks.
3. The ultra-thin metal dome keyswitch of claim 1, wherein: the protection piece (7) includes two, and two protection pieces are fixed respectively on the both sides inner wall of pressing the key zone, and No. two fixed blocks (9) include two, and No. two fixed blocks are fixed respectively in the lower part of two protection pieces, and metal shrapnel (8) and No. two are pressed shell fragment (12) and all are set up between No. two fixed blocks.
4. The ultra-thin metal dome keyswitch of claim 3, wherein: the top end of the protection block (7) is a stepped bulge, the left end and the right end of the key (6) are also provided with stepped bulges, and the bulges at the top end of the protection block (7) are matched with the bulges at the end part of the key (6).
5. The ultra-thin metal dome keyswitch of claim 4, wherein: the bottom of the protection block (7) is provided with a groove (71), one end of the second fixing block (9) which is not connected with the metal elastic sheet (8) is provided with a protruding block (91), and the protruding block (91) is matched with the groove (71).
6. The ultra-thin metal dome keyswitch of claim 1, wherein: the first pressing elastic sheet (4), the auxiliary contact block (5), the metal elastic sheet (8), the second elastic block (11) and the second pressing elastic sheet (12) are coaxially arranged.
7. The ultra-thin metal dome keyswitch of claim 1, wherein: the second elastic block (11) is of a hemispherical shape protruding upwards, and the auxiliary contact block (5) is of a hemispherical shape protruding downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120721398.3U CN214588541U (en) | 2021-04-09 | 2021-04-09 | Ultra-thin metal shrapnel key switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120721398.3U CN214588541U (en) | 2021-04-09 | 2021-04-09 | Ultra-thin metal shrapnel key switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214588541U true CN214588541U (en) | 2021-11-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120721398.3U Active CN214588541U (en) | 2021-04-09 | 2021-04-09 | Ultra-thin metal shrapnel key switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214588541U (en) |
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2021
- 2021-04-09 CN CN202120721398.3U patent/CN214588541U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221226 Address after: 266555 Plant 20, No. 252, Yanhe Road, Huangdao District, Qingdao, Shandong Patentee after: Qingdao Shanyuan Precision Electronic Technology Co.,Ltd. Address before: 266555 plant 20, Tianhe Industrial Park, Weihe Road, Huangdao District, Qingdao City, Shandong Province Patentee before: QINGDAO SHAN YUAN ELECTRONICS CO.,LTD. |