CN220796533U - Heterogeneous composite silica gel key - Google Patents
Heterogeneous composite silica gel key Download PDFInfo
- Publication number
- CN220796533U CN220796533U CN202322454438.4U CN202322454438U CN220796533U CN 220796533 U CN220796533 U CN 220796533U CN 202322454438 U CN202322454438 U CN 202322454438U CN 220796533 U CN220796533 U CN 220796533U
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- Prior art keywords
- composite
- composite portion
- silica gel
- pressing
- axial
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- 239000002131 composite material Substances 0.000 title claims abstract description 152
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 239000000741 silica gel Substances 0.000 title claims abstract description 53
- 229910002027 silica gel Inorganic materials 0.000 title claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 61
- 150000001875 compounds Chemical group 0.000 claims abstract description 21
- 229920001296 polysiloxane Polymers 0.000 claims description 23
- 238000013329 compounding Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 8
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000010409 thin film Substances 0.000 description 7
- 238000000465 moulding Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000012528 membrane Substances 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
- 230000000087 stabilizing effect Effects 0.000 description 1
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- Push-Button Switches (AREA)
Abstract
The utility model discloses a heterogeneous composite silica gel key, which comprises a supporting part, an elastic connecting part and a pressing part, wherein the supporting part, the elastic connecting part and the pressing part are integrally formed by adopting silica gel materials; the trigger part is characterized in that a second composite part which is made of non-silica gel materials and has hardness larger than that of the silica gel materials is composited at the lower end of the trigger part on the inner side of the pressing part in the axial direction, and the second composite part and the trigger part are coaxially and correspondingly arranged along the pressing axial direction. According to the utility model, as the pressing part of the silica gel key is compounded into the compound part which is made of non-silica gel material and has the hardness larger than that of the silica gel material, the rebound force of the pressing part is more excellent due to the existence of the compound part, the difference between P2 and P4 is shortened, the pressing operation touch feeling of the key is more ideal, and thus the Click performance and the service life of the key are effectively improved.
Description
Technical Field
The utility model relates to the technical field of keyboards, in particular to a heterogeneous composite silica gel key.
Background
The thin film keyboard with a conventional structure mainly comprises a keycap, scissors pins (X-shaped brackets) arranged below the keycap and a silica gel key, wherein the X-shaped brackets are used for fixing and stabilizing the keycap and are matched with a thin film circuit switch (membrane) arranged at the bottom. Referring to fig. 1, a silica gel button (Rubber Dome) in the prior art is in a reverse-buckling bowl shape, and mainly includes a supporting portion 11, an elastic connection portion 12 and a pressing portion 13, wherein the supporting portion 11 of the bowl opening is mounted on a thin film circuit switch to play a supporting role, the pressing portion 13 of the bowl bottom is used for contacting a keycap, and an air exhaust groove 111 is radially provided in the supporting portion 11 for smoothly exhausting air in the silica gel button when the silica gel button is pressed so as to improve pressing performance.
When the key cap is pressed, the pressing part 13 of the silica gel key is firstly contacted with the key cap and driven by the key cap to trigger downwards along the axial direction, and then the triggering part protruding at the inner end of the pressing part 13 in the axial direction presses the inner side of the thin film circuit switch to drive the electrode contact points in the thin film circuit switch to be contacted with each other to realize conduction, and after the pressing is canceled, the elastic connecting part 12 of the silica gel key is reset to reset the pressing part 13 and drive the key cap to reset.
Because the above prior art silica gel button adopts integrative injection molding of silica gel material, refer to fig. 2, the silica gel button is in the use, and rebound Force (Return Force) is low and the difference between P2-P4 is great to influence the press operation sense of touch and the life-span of button, and then lead to the push performance nonideal.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a heterogeneous composite silica gel key, which comprises a support part, an elastic connection part and a pressing part, wherein the support part is integrally formed by silica gel materials, the support part is provided with an exhaust groove which is internally and externally communicated, and the inner side of the pressing part is provided with an axially-protruding triggering part, and the heterogeneous composite silica gel key is characterized in that:
the pressing part is provided with a pressing part, wherein the pressing part is provided with a pressing part, and the pressing part is provided with a pressing part which is coaxial with the pressing part;
the trigger part is characterized in that a second composite part which is made of non-silica gel materials and has hardness larger than that of the silica gel materials is composited at the lower end of the trigger part on the inner side of the pressing part in the axial direction, and the second composite part and the trigger part are coaxially and correspondingly arranged along the pressing axial direction.
The first composite part and the second composite part are made of the same or different materials, and the hardness of the first composite part and the second composite part is higher than that of the silica gel material, and meanwhile, the non-silica gel material is required to be made of other plastic materials or inorganic non-metal materials which cannot generate electromagnetic interference on the thin film circuit switch.
The utility model also provides a molding method of the silica gel key, wherein when the supporting part, the elastic connecting part and the pressing part are integrally injection molded by adopting silica gel materials, the first compound part and the second compound part are compositely molded by adopting a burying method; or the first composite part and the second composite part are respectively formed by combining the pressing part by adopting an injection molding method.
Furthermore, a third compound part is coaxially arranged between the first compound part and the second compound part, and two axial ends of the third compound part are respectively connected to the first compound part and the second compound part.
The first composite part, the second composite part and the third composite part are different in material, the axial two ends of the third composite part are respectively connected with the axial inner end surfaces of the first composite part and the second composite part, and the hardness of the first composite part, the second composite part and the third composite part is higher than that of the silica gel material.
The first composite part and the third composite part are made of the same material and are integrally formed, the second composite part is made of different materials from the first composite part and the third composite part, and one axial end of the third composite part is connected with the axial inner end surface of the second composite part.
The second composite part and the third composite part are made of the same material and are integrally formed, the first composite part is made of different materials from the second composite part and the third composite part, and one axial end of the third composite part is connected with the axial inner end surface of the first composite part.
The second composite part and the third composite part are made of the same material and are integrally formed, the first composite part is made of different materials from the second composite part and the third composite part, and one axial end of the third composite part penetrates through the first composite part and the axial end face of the third composite part is flush with the axial outer end face of the first composite part.
The first composite part, the second composite part and the third composite part are made of the same material and are integrally formed.
The utility model also provides a molding method of the silica gel key, wherein when the supporting part, the elastic connecting part and the pressing part are integrally injection molded by adopting silica gel materials, the first compounding part, the second compounding part and the third compounding part are compositely molded with the pressing part by adopting a burying method; or the first composite part, the second composite part and the third composite part are compositely formed with the pressing part by adopting an injection molding method.
According to the technical scheme, the pressing part of the silica gel key is compounded into the compound part which is made of non-silica gel materials and has the hardness larger than that of the silica gel materials, so that the rebound force of the pressing part is more excellent due to the existence of the compound part, the difference between P2 and P4 is shortened, the pressing operation touch feeling of the key is more ideal, and the Click performance and the service life of the key are effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic axial sectional view of a prior art silicone key;
FIG. 2 is a schematic diagram showing the correspondence between the pressing force and the stroke of the silica gel key in the structure shown in FIG. 1;
FIG. 3 is an axial cross-sectional schematic view of a structural silicone key according to the present disclosure;
FIG. 4 is a schematic axial cross-sectional view of another structural silicone key disclosed in the present utility model;
FIG. 5 is a schematic axial cross-sectional view of a silicone key of yet another construction according to the present disclosure;
FIG. 6 is a schematic axial cross-sectional view of a silicone key of yet another construction according to the present disclosure;
FIG. 7 is a schematic axial cross-sectional view of a silicone key of yet another construction according to the present disclosure;
FIG. 8 is a schematic axial cross-sectional view of a silicone key of yet another construction according to the present disclosure;
fig. 9 is an axial cross-sectional schematic view of a silica gel key with another structure according to the present disclosure.
The figures represent the numbers: 11. a support part; 111. an exhaust groove; 12. an elastic connection part; 13. a pressing part; 131. a first composite part; 132. a second composite part; 133. and a composite part III.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
Example 1:
referring to fig. 3, embodiment 1 provides a heterogeneous composite silica gel key, which includes a support portion 11, an elastic connection portion 12 and a pressing portion 13 integrally formed by silica gel, wherein the support portion 11 is provided with an air exhaust groove 111 penetrating inside and outside, and an axially protruding triggering portion is arranged inside the pressing portion 13;
the pressing part 13 is provided with a first composite part 131 which is made of non-silica gel and has hardness larger than that of the silica gel, wherein the outer end of the pressing part 13 in the axial direction is contacted with one side of the key cap, the first composite part 131 is covered on the outer end of the pressing part 13 in the axial direction in a whole plate mode, and the first composite part 131 and the pressing part 13 are coaxially and correspondingly arranged along the pressing axial direction; the lower end of the trigger part at the inner side of the pressing part 13 in the axial direction is compounded with a second compound part 132 which is made of non-silica gel and has hardness larger than that of the silica gel, and the second compound part 132 and the trigger part are coaxially and correspondingly arranged along the pressing axial direction.
The materials of the first composite part 131 and the second composite part 132 are the same or different, and the hardness of the first composite part 131 and the second composite part 132 is greater than that of the silica gel material, and the non-silica gel material is required to be selected from other plastic materials or inorganic non-metal materials which do not generate electromagnetic interference to the thin film circuit switch.
Example 2:
based on embodiment 1 and referring to fig. 4, in embodiment 2, a third composite portion 133 is coaxially disposed between the first composite portion 131 and the second composite portion 132, and two axial ends of the third composite portion 133 are connected to the first composite portion 131 and the second composite portion 132, respectively;
the first composite portion 131, the second composite portion 132 and the third composite portion 133 are all different in material, and two axial ends of the third composite portion 133 are respectively connected with the axial inner end surfaces of the first composite portion 131 and the second composite portion 132.
Example 3:
based on embodiment 2 and referring to fig. 5, in embodiment 3, the first composite portion 131 and the third composite portion 133 are made of the same material and are integrally formed, the second composite portion 132 is made of a material different from that of the first composite portion 131 and the third composite portion 133, and one axial end of the third composite portion 133 is connected to the axial inner end surface of the second composite portion 132.
Example 4:
based on embodiment 2 and referring to fig. 6, in embodiment 4, the material of the second composite portion 132 and the material of the third composite portion 133 are the same and are integrally formed, the material of the first composite portion 131 is different from the material of the second composite portion 132 and the material of the third composite portion 133, and one axial end of the third composite portion 133 is connected to the axial inner end surface of the first composite portion 131.
Example 5:
based on embodiment 2 and referring to fig. 7, in embodiment 5, the material of the second composite portion 132 and the material of the third composite portion 133 are the same and are integrally formed, the material of the first composite portion 131 is different from the material of the second composite portion 132 and the material of the third composite portion 133, and one axial end of the third composite portion 133 penetrates the first composite portion 131 and the axial end face of the third composite portion 133 is flush with the axial outer end face of the first composite portion 131.
Example 6:
based on embodiment 2 and referring to fig. 8, in embodiment 6, the first composite part 131, the second composite part 132 and the third composite part 133 are made of the same material and are integrally formed.
Example 7:
based on embodiment 1 and referring to fig. 9, in embodiment 7, the first composite part 131 is a ring-shaped structure, and the pressing part 13 made of silicone material has a bump filling the space axially inside the first composite part 131.
Example 8:
based on embodiments 1 and 7, in the molding method of the silicone key according to embodiment 8, when the supporting portion 11, the elastic connecting portion 12 and the pressing portion 13 are integrally injection molded with silicone materials, the first compounding portion 131 and the second compounding portion 132 are compositely molded with the pressing portion 13 by embedding.
Example 9:
based on embodiments 1 and 7, in the molding method of the silicone key according to embodiment 9, after the supporting portion 11, the elastic connecting portion 12 and the pressing portion 13 are integrally injection molded with silicone materials, the first compounding portion 131 and the second compounding portion 132 are respectively injection molded with the pressing portion 13.
Example 10:
based on embodiments 2-6, in the molding method of the silicone key according to embodiment 10, when the supporting portion 11, the elastic connecting portion 12 and the pressing portion 13 are integrally injection molded with silicone materials, the first compounding portion 131, the second compounding portion 132 and the third compounding portion 133 are compositely molded with the pressing portion 13 by embedding.
Example 11:
based on embodiments 2-6, in the molding method of the silicone key according to embodiment 11, after the supporting portion 11, the elastic connecting portion 12 and the pressing portion 13 are integrally injection molded by using silicone materials, the first compounding portion 131, the second compounding portion 132 and the third compounding portion 133 are compositely molded with the pressing portion 13 by using an injection molding method.
According to the utility model, as the pressing part of the silica gel key is compounded into the compound part which is made of non-silica gel material and has the hardness larger than that of the silica gel material, the rebound force of the pressing part is more excellent due to the existence of the compound part, the difference between P2 and P4 is shortened, the pressing operation touch feeling of the key is more ideal, and thus the Click performance and the service life of the key are effectively improved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to the embodiments described above will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a heterogeneous compound silica gel button, includes support portion (11), elastic connection portion (12) and the pressing part (13) that adopt silica gel material integrated into one piece, support portion (11) are provided with inside and outside exhaust groove (111) that link up, pressing part (13) inboard has the bellied triggering portion of axial, its characterized in that:
one side of the axially outer end of the pressing part (13) contacting the key cap is compounded with a first compound part (131) which is made of non-silica gel and has hardness larger than that of the silica gel, and the first compound part (131) and the pressing part (13) are coaxially and correspondingly arranged along the pressing axial direction;
the lower end of the trigger part at the axial inner side of the pressing part (13) is compounded with a compound part II (132) which is made of non-silica gel and has hardness larger than that of the silica gel, and the compound part II (132) and the trigger part are coaxially and correspondingly arranged along the pressing axial direction.
2. The heterogeneous composite silicone key of claim 1, wherein the first composite portion (131) and the second composite portion (132) are made of the same or different materials.
3. The heterogeneous composite silicone key according to claim 1, wherein a composite portion three (133) is further coaxially disposed between the composite portion one (131) and the composite portion two (132), and two axial ends of the composite portion three (133) are respectively connected to the composite portion one (131) and the composite portion two (132).
4. The heterogeneous composite silicone key of claim 3, wherein the first composite portion (131), the second composite portion (132) and the third composite portion (133) are made of different materials, and two axial ends of the third composite portion (133) are respectively connected with the first composite portion (131) and the second composite portion (132) at the axial inner end surfaces thereof.
5. A heterogeneous composite silicone key according to claim 3, wherein the first composite portion (131) and the third composite portion (133) are made of the same material and are integrally formed, the second composite portion (132) is made of a material different from that of the first composite portion (131) and the third composite portion (133), and one axial end of the third composite portion (133) is connected to an axial inner end surface of the second composite portion (132).
6. A heterogeneous composite silicone key according to claim 3, wherein the second composite portion (132) and the third composite portion (133) are made of the same material and are integrally formed, the first composite portion (131) is made of a material different from that of the second composite portion (132) and the third composite portion (133), and one axial end of the third composite portion (133) is connected to an axial inner end surface of the first composite portion (131).
7. A heterogeneous composite silicone key according to claim 3, wherein the second composite portion (132) and the third composite portion (133) are made of the same material and are integrally formed, the first composite portion (131) is made of a material different from that of the second composite portion (132) and the third composite portion (133), and one axial end of the third composite portion (133) penetrates the first composite portion (131) and an axial end surface of the third composite portion (133) is flush with an axial outer end surface of the first composite portion (131).
8. The heterogeneous composite silicone key of claim 3, wherein the first composite portion (131), the second composite portion (132) and the third composite portion (133) are made of the same material and are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322454438.4U CN220796533U (en) | 2023-09-11 | 2023-09-11 | Heterogeneous composite silica gel key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322454438.4U CN220796533U (en) | 2023-09-11 | 2023-09-11 | Heterogeneous composite silica gel key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220796533U true CN220796533U (en) | 2024-04-16 |
Family
ID=90663320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322454438.4U Active CN220796533U (en) | 2023-09-11 | 2023-09-11 | Heterogeneous composite silica gel key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220796533U (en) |
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2023
- 2023-09-11 CN CN202322454438.4U patent/CN220796533U/en active Active
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