Silica gel button capable of preventing collapse deformation

Abstract

The utility model discloses an anti-collapse deformation silica gel button, comprising a bottom shell, a cover shell installed on the upper end of the bottom shell, a positioning assembly arranged in the inner cavity of the bottom shell, a PCB arranged on the upper end of the positioning assembly, a silica gel button mechanism arranged on the upper end of the PCB, square grooves arranged on the upper end of the cover shell at equal intervals, and a silica gel button mechanism arranged on the upper end of the silica gel button mechanism. The silica gel key mechanism comprises a silica gel layer plate arranged at the upper end of the PCB, the upper end of the silica gel layer plate is integrally connected with a plurality of silica gel key caps, the top of an inner cavity of each silica gel key cap is provided with a key assembly, the top end of the inner cavity of each silica gel key cap is provided with a square slot, the lower end of each square slot is connected with a limiting assembly in an inserted mode, and the upper end of each silica gel key cap is provided with a limiting groove. Compared with the prior art, the silica gel button is reasonable in structural design and high in practicability, the silica gel button can be effectively protected against collapse and deformation, the PCB can be effectively protected against damage caused by overlarge pressing force, and the using effect is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of silica gel buttons, in particular to a silica gel button which is anti-collapse and deformation. Background Art

[0002] Silicone keys are key products made of silicone as raw material. Silicone keys have excellent heat resistance, cold resistance, environmental resistance, electrical insulation, fatigue resistance and other characteristics. Silicone keys are often used in electronic calculators, remote controls, telephones and other products.

[0003] According to patent publication number CN219610275U, an anti-collapse silicone key is disclosed, which includes a mounting shell, an upper cover plate is fixedly mounted on the upper surface of the mounting shell, a silicone membrane is fixedly mounted on the inner surface of the mounting shell, a fixing plate is fixedly mounted on the inner surface of the mounting shell below the silicone membrane, a key unit is fixedly mounted between the silicone membrane and the fixing plate, and a PCB board is fixedly mounted on the inner surface of the mounting shell below the fixing plate.

[0004] Although the above technical solution can prevent the contactor from contacting the PCB with excessive force and causing direct damage to the PCB when the button is pressed by setting a fixing plate, which is set between the button unit and the PCB and has an avoidance hole, and the elastic component and the return spring provide a rebound force after pressing and drive the silicone button to return to its original shape, thereby avoiding the phenomenon of non-rebound and the collapse of the button, its structural design is too complicated, the cost is high, and the practicality is poor. In addition, the elastic effect of the elastic component will decrease after long-term use. Therefore, we provide a silicone button that prevents collapse and deformation to solve this problem. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution for a silicone keypad that is resistant to collapse and deformation and can solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a silicone keypad that prevents collapse and deformation, comprising a bottom shell, a cover shell mounted on the upper end of the bottom shell, a positioning assembly disposed in the inner cavity of the bottom shell, a PCB disposed on the upper end of the positioning assembly, a silicone keypad mechanism disposed on the upper end of the PCB, and square grooves equidistantly disposed on the upper end of the cover shell;

[0007] The silicone key mechanism includes a silicone layer plate arranged on the upper end of the PCB board, and several silicone key caps are integrally connected to the upper end of the silicone layer plate. A key assembly is installed on the top of the inner cavity of the silicone key cap, and a square slot is provided at the top of the inner cavity of the silicone key cap. A limit assembly is inserted into the lower end of the square slot, and the lower end of the limit assembly is fitted with the PCB board. The silicone key caps all pass through the square slot and extend above it.

[0008] As a further solution of the present invention: the positioning assembly includes four positioning columns installed at the bottom end of the inner cavity of the bottom shell, and blocks are installed on the outside of the positioning columns. Positioning holes that are plugged into the positioning columns are provided around the upper end of the PCB board, and through holes that are plugged into the positioning columns are provided around the upper end of the silicone layer.

[0009] As a further solution of the present invention: a plurality of second square limiting sleeves are integrally connected to the lower end of the cover shell, the second square limiting sleeves all match the positions of the square grooves, and the plurality of second square limiting sleeves are respectively located on the outside of the plurality of silicone button caps.

[0010] As a further solution of the present invention: the key assembly includes a silicone sleeve integrally connected to the silicone key cap, the lower end of the silicone sleeve is connected to the key block, and the inner cavity of the silicone sleeve is provided with a first foam column, a rubber column and a second foam column from top to bottom, the first foam column, the rubber column and the second foam column are bonded to each other, the second foam column and the key block are not in contact, the first foam column is bonded to the top of the inner cavity of the silicone key cap, and vertical grooves are equidistantly provided on the lower outer side of the silicone sleeve.

[0011] As a further solution of the present invention: the limiting assembly includes a first square limiting sleeve inserted in the inner cavity of the square slot, the lower end of the first square limiting sleeve is adhered with a foam frame strip, and the lower end of the foam frame strip is in contact with the PCB board.

[0012] As a further solution of the present invention: the inner cavity of the first square limit sleeve is integrally connected with connecting blocks on all sides, the upper ends of the connecting blocks are connected with plug-in columns, and the inner cavity top of the silicone button cap is provided with sockets connected thereto on all sides.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The second square limit sleeve is designed so that the outer sides of the silicone keycap will be tightly attached to the second square limit sleeve, preventing the silicone keycap from bending excessively and deforming when pressed, thereby providing effective position limiting and anti-deformation protection. When the silicone keycap is pressed downward, the first square limit sleeve moves downward synchronously with it. The designed foam frame effectively provides buffering protection for the PCB board, and the foam frame has a rebound reset effect, which further improves the automatic reset effect of the silicone keycap and prevents collapse that affects its use effect.

[0015] 2. Through the designed key assembly, the first foam column, rubber column and second foam column designed in the key assembly can play an extrusion buffering effect when pressed down, which is convenient for reducing the pressure applied by the operator to the key block, thereby effectively avoiding damage to the PCB board due to excessive extrusion force, and effectively improving the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall split three-dimensional structure of the utility model;

[0018] Figure 3 It is a partially cutaway three-dimensional structural schematic diagram of the utility model;

[0019] Figure 4 This utility model Figure 3 A schematic diagram of the enlarged structure of the device in part A;

[0020] Figure 5 This is a schematic diagram of the disassembled three-dimensional structure of part of the silicone key mechanism of the utility model;

[0021] Figure 6 This is a schematic diagram of a partial cross-sectional three-dimensional structure of the cover shell of the present invention;

[0022] Figure 7 This is a schematic diagram of the three-dimensional structure of the silicone keycap of the utility model when viewed from above;

[0023] Figure 8 This is a schematic diagram of the semi-sectional three-dimensional structure of the silicone keycap of the present invention;

[0024] Figure 9 This is a schematic diagram of a partially disassembled and cutaway three-dimensional structure of the present invention;

[0025] Figure 10 This utility model Figure 9 The enlarged structural diagram of the device in part B is shown in FIG.

[0026] Figure 11 This utility model Figure 9 The enlarged structural diagram of the device in part C is shown in the figure;

[0027] Figure 12 The utility model is a schematic diagram of the internal three-dimensional structure of the silicone keycap when viewed from above.

[0028] The reference numerals and names in the figures are as follows:

[0029] Bottom case 1, cover case 2, PCB board 3, silicone button mechanism 4, silicone layer 41, silicone button cap 42, button assembly 43, silicone sleeve 431, button block 432, vertical slot 433, first foam column 434, rubber column 435, second foam column 436, limit assembly 44, first square limit sleeve 441, foam frame strip 442, connecting block 443, plug column 444, square slot 45, jack 46, square slot 5, positioning hole 6, positioning column 7, block 8, second square limit sleeve 9. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figure 1-12 , a silicone button that prevents collapse and deformation, includes a bottom shell 1, a cover shell 2 is installed on the upper end of the bottom shell 1, a positioning assembly is provided in the inner cavity of the bottom shell 1, a PCB board 3 is provided on the upper end of the positioning assembly, a silicone button mechanism 4 is provided on the upper end of the PCB board 3, and square grooves 5 are equidistantly provided on the upper end of the cover shell 2. The silicone button mechanism 4 includes a silicone layer plate 41 arranged on the upper end of the PCB board 3, and a plurality of silicone button caps 42 are integrally connected to the upper end of the silicone layer plate 41. The silicone button caps 42 all pass through the square grooves 5 and extend above them. The positioning assembly includes four positioning columns 7 installed at the bottom end of the inner cavity of the bottom shell 1, and blocks 8 are installed on the outer sides of the positioning columns 7. Positioning holes 6 that are plugged into the positioning columns 7 are provided around the upper end of the PCB board 3, and through holes that are plugged into the positioning columns 7 are provided around the upper end of the silicone layer plate 41.

[0032] By designing four positioning posts 7, the positioning holes 6 at the upper end of the PCB board 3 can be easily plugged into it, and at the same time, the through holes at the upper end of the silicone layer 41 can be plugged into it, which facilitates the positioning, plugging and installation of the PCB board 3 and the silicone layer 41, facilitates quick positioning and installation, improves installation efficiency, and is easy to use.

[0033] A key assembly 43 is installed at the top of the inner cavity of the silicone key cap 42. The key assembly 43 includes a silicone sleeve 431 integrally connected to the silicone key cap 42. The lower end of the silicone sleeve 431 is connected to the key block 432. The inner cavity of the silicone sleeve 431 is provided with a first foam column 434, a rubber column 435 and a second foam column 436 from top to bottom. The first foam column 434, the rubber column 435 and the second foam column 436 are bonded to each other, and the second foam column 436 and the key block 432 are not in contact. The first foam column 434 is bonded to the top of the inner cavity of the silicone key cap 42, and vertical grooves 433 are equidistantly provided on the lower outer side of the silicone sleeve 431.

[0034] Through the designed key assembly 43, when the silicone key product is used, the silicone key cap 42 is installed, and then the middle part of the silicone key cap 42 is recessed downward, and at the same time, the silicone sleeve 431, the first foam column 434, the rubber column 435, the second foam column 436 and the key block 432 at the top of its inner cavity are synchronously moved downward, and the key block 432 first contacts the key contact point at the upper end of the PCB board 3, thereby realizing the key function. If the user operates with excessive force, the key block 432 has already fit with the PCB board 3, and then the silicone sleeve 431, the first foam column 434, the rubber column 435 and the second foam column 436 continue to press down. Since the silicone sleeve 431 is made of silicone material The silicone sleeve 431 is made of a soft hollow sleeve, so its silicone sleeve 431 will bend and deform when pressed down, and due to the multiple vertical grooves 433 designed on the lower part of the outer side of the silicone sleeve 431, the second foam column 436 in the inner cavity of the silicone sleeve 431 will press down and contact the key block 432, and the position of the vertical groove 433 designed on the outer side of the silicone sleeve 431 will be deformed and bent outward, so that the second foam column 436 can more fully contact the key block 432. In addition, the designed first foam column 434 and rubber column 435 can play an extrusion buffering effect when pressed down, which makes it easy to reduce the pressure applied by the operator to the key block 432, thereby effectively preventing the PCB board 3 from being damaged by excessive extrusion force.

[0035] The lower end of the cover shell 2 is integrally connected with a plurality of second square limiting sleeves 9 , which all match the positions of the square grooves 5 . The plurality of second square limiting sleeves 9 are respectively located outside the plurality of silicone button caps 42 .

[0036] When the center of the silicone key cap 42 is pressed downward, the outer sides of the silicone key cap 42 expand and bend outward. Through the designed second square limiting sleeve 9, the outer sides of the silicone key cap 42 will be tightly attached to the second square limiting sleeve 9, avoiding the silicone key cap 42 from bending excessively and deforming easily when being pressed, thereby facilitating effective limiting and anti-deformation protection.

[0037] A square slot 45 is provided at the top of the inner cavity of the silicone key cap 42, and a limiting component 44 is inserted into the lower end of the square slot 45, and the lower end of the limiting component 44 is fitted with the PCB board 3. The limiting component 44 includes a first square limiting sleeve 441 inserted in the inner cavity of the square slot 45, and a foam frame strip 442 is bonded to the lower end of the first square limiting sleeve 441, and the lower end of the foam frame strip 442 is fitted with the PCB board 3. The inner cavity of the first square limiting sleeve 441 is integrated with connecting blocks 443, and the upper ends of the connecting blocks 443 are connected to plug posts 444. The top of the inner cavity of the silicone key cap 42 is provided with sockets 46 that are plugged in therewith.

[0038] The first square limit sleeve 441 is inserted into the square slot 45 in the inner cavity of the silicone key cap 42, and the inner side of the first square limit sleeve 441 is connected to the column 444 through the connecting block 443, and the column 444 is inserted into the socket 46 at the top of the inner cavity of the silicone key cap 42, which conveniently and effectively improves the plug-in installation firmness of the limit assembly 44, and when the silicone key cap 42 is pressed downward, the first square limit sleeve 441 moves downward synchronously with it, and fits with the PCB board 3 through the foam frame strip 442, avoiding the lower end of the first square limit sleeve 441 directly contacting the PCB board 3, causing excessive downward pressure and damage to it, and the designed foam frame strip 442 effectively plays a buffering protection role, and the foam frame strip 442 has a rebound reset effect, which facilitates to further improve the automatic reset effect of the silicone key cap 42, avoid collapse, and affect its use effect.

[0039] Working principle: By designing four positioning columns 7, it is convenient for the positioning holes 6 at the upper end of the PCB board 3 to be plugged into it, and at the same time, the through holes at the upper end of the silicone layer plate 41 are plugged into it, so that the PCB board 3 and the silicone layer plate 41 can be positioned, plugged and installed conveniently and quickly. The installation is convenient and the installation efficiency is improved, and it is easy to use. When the center of the silicone key cap 42 is pressed downward, the outer sides of the silicone key cap 42 are all expanded and bent outward. By designing the second square limiting sleeve 9, the outer sides of the silicone key cap 42 will be tightly attached to the second square limiting sleeve 9, so that the silicone key cap 42 is prevented from being bent excessively and easily deformed when being pressed, and it is convenient to effectively limit and prevent deformation thereof. When the silicone key cap 42 is pressed downward, the first square limiting sleeve 441 is pressed down synchronously with it. The first and second foam columns 434, 435 and 436 of the key assembly 43 are designed to have an extrusion buffering effect when they are pressed down, so as to reduce the pressing force applied by the operator to the key block 432, thereby effectively preventing the PCB board 3 from being damaged by excessive extrusion, and effectively improving the use effect.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A silicone button that prevents collapse and deformation, characterized in that: The invention comprises a bottom shell (1), a cover shell (2) is installed on the upper end of the bottom shell (1), a positioning assembly is provided in the inner cavity of the bottom shell (1), a PCB board (3) is provided on the upper end of the positioning assembly, a silicone key mechanism (4) is provided on the upper end of the PCB board (3), and square grooves (5) are equidistantly provided on the upper end of the cover shell (2); The silicone key mechanism (4) comprises a silicone layer (41) arranged on the upper end of the PCB board (3), a plurality of silicone key caps (42) are integrally connected to the upper end of the silicone layer (41), a key assembly (43) is installed on the top of the inner cavity of the silicone key cap (42), a square slot (45) is provided on the top of the inner cavity of the silicone key cap (42), a limit assembly (44) is inserted into the lower end of the square slot (45), the lower end of the limit assembly (44) is in contact with the PCB board (3), and the silicone key caps (42) all pass through the square slot (5) and extend above it.

2. The anti-collapse and deformation silicone keypad according to claim 1, characterized in that: The positioning assembly comprises four positioning posts (7) mounted at the bottom end of the inner cavity of the bottom shell (1), and blocks (8) are mounted on the outer sides of the positioning posts (7). Positioning holes (6) plugged into the positioning posts (7) are provided around the upper end of the PCB board (3), and through holes plugged into the positioning posts (7) are provided around the upper end of the silicone layer (41).

3. The anti-collapse and deformation silicone keypad according to claim 1, characterized in that: The lower end of the cover shell (2) is integrally connected with a plurality of second square limiting sleeves (9), each of which matches the position of the square groove (5), and the plurality of second square limiting sleeves (9) are respectively located on the outside of the plurality of silicone keycaps (42).

4. The anti-collapse and deformation silicone keypad according to claim 2, characterized in that: The key assembly (43) includes a silicone sleeve (431) integrally connected to the silicone key cap (42), the lower end of the silicone sleeve (431) is connected to the key block (432), and the inner cavity of the silicone sleeve (431) is provided with a first foam column (434), a rubber column (435) and a second foam column (436) from top to bottom. The first foam column (434), the rubber column (435) and the second foam column (436) are bonded to each other, and the second foam column (436) and the key block (432) are not in contact. The first foam column (434) is bonded to the top of the inner cavity of the silicone key cap (42), and vertical grooves (433) are equidistantly provided on the lower outer portion of the silicone sleeve (431).

5. The anti-collapse and deformation silicone keypad according to claim 1, characterized in that: The limiting assembly (44) includes a first square limiting sleeve (441) inserted into the inner cavity of the square slot (45), a foam frame strip (442) is bonded to the lower end of the first square limiting sleeve (441), and the lower end of the foam frame strip (442) is in contact with the PCB board (3).

6. The anti-collapse and deformation silicone keypad according to claim 5, characterized in that: The inner cavity of the first square limiting sleeve (441) is integrally connected with a connecting block (443) on all sides, the upper end of the connecting block (443) is connected with a plug post (444), and the inner cavity top of the silicone key cap (42) is provided with a socket (46) connected thereto on all sides.

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