Static capacitance mute keyboard switch

Abstract

The utility model discloses a static capacitance mute keyboard switch, which relates to the technical field of keyboard switches and comprises a key shell, a key cap, an elastic rubber bowl and a conical spring, the key cap is arranged above the key shell, the elastic rubber bowl is arranged below the key shell, and the conical spring is arranged below the elastic rubber bowl. The key cap penetrates through the key shell and is connected with the top of the elastic rubber bowl; inserting strips are arranged at four corners of the bottom of the key shell, clamping grooves are formed in the inserting strips, limiting strips are arranged at four corners of the lower end of the side face of the elastic rubber bowl, and clamping strips are arranged on the limiting strips; according to the elastic rubber bowl, the clamping strips at the four corners of the lower end of the side face are clamped with the clamping grooves at the four corners of the bottom of the key shell, acting force applied to the key shell can be transmitted to the four corners of the lower end of the elastic rubber bowl through the four corners, and therefore the downward pressing path is shortened, and the possibility of position deviation is greatly reduced; and the key cap is connected with the top of the million-miles rubber bowl, so that the connection is more stable due to double connection.

Description

Technical Field

[0001] This utility model relates to the field of keyboard switch technology, specifically an electrostatic capacitive silent keyboard switch. Background Technology

[0002] The principle of a capacitive keyboard is to change the capacitance by altering the distance between electrodes when a key is pressed, thereby driving an encoder. Therefore, capacitive keyboards can achieve faster trigger response with shorter travel and lighter key force, and have the advantages of being lightweight and quiet.

[0003] A capacitive keyboard with publication number CN 206819916 U discloses a shell, a chassis, keycaps, a rubber cover, a spring, a plunger, and a PCB circuit board. The keycaps are located on the upper part of the shell, the chassis is located at the bottom of the shell, a plunger is located between the shell and the keycaps, a rubber cover is located at the bottom of the shell, a spring is located inside the rubber cover, and a PCB circuit board is located below the chassis. The plunger is connected to the spring. As shown in the accompanying drawings, the top of the spring and the rubber cover connects to the bottom of the keycap. When a keycap is pressed, the keycap compresses the spring. Due to the long downward pressure path, there may be positional misalignment between the rubber cover and the spring, which can easily lead to unresponsive keys or poor contact after prolonged use. Utility Model Content

[0004] This utility model discloses an electrostatic capacitive silent keyboard switch to solve the technical problem of misalignment between the rubber cover and the spring.

[0005] To solve the above-mentioned technical problems, the present invention proposes the following optimized technical solution:

[0006] An electrostatic capacitive silent keyboard switch includes a key shell, keycaps, elastic rubber domes, and a conical spring. The keycaps are positioned above the key shell, the elastic rubber domes are positioned below the key shell, and the conical spring is positioned below the elastic rubber domes. The keycaps pass through the key shell and connect to the top of the elastic rubber domes. Inserts with slots are provided at the four corners of the bottom of the key shell. Limiting strips with retaining strips are provided at the four corners of the lower side of the elastic rubber domes. When the elastic rubber domes are installed on the key shell, the inserts fit against the inner side of the limiting strips, and the retaining strips engage with the slots.

[0007] Furthermore, the keycap has a first limiting platform at the lower side, the key shell has a hollow structure, the diameter of the first limiting platform is larger than the inner diameter of the key shell, and the keycap passes through the key shell so that the first limiting platform is locked inside the key shell.

[0008] Furthermore, the elastic rubber cup includes an integrally formed first straight portion and a cup portion, the bottom of the cup portion is provided with a first connecting groove, and the conical spring includes an integrally formed second straight portion and a conical portion, the second straight portion is inserted into the first connecting groove so that the conical spring is connected inside the elastic rubber cup.

[0009] Furthermore, the elastic rubber cup is connected to the keycap via a plug-in connection.

[0010] Furthermore, the keycap has a connecting post at its bottom end, and a second limiting platform is provided at the lower side of the connecting post. The elastic rubber cup has a second connecting groove and a limiting groove arranged sequentially from top to bottom. The diameter of the limiting groove is larger than the diameter of the second connecting groove. The connecting post is inserted into the second connecting groove so that the second limiting platform is locked in the limiting groove.

[0011] Furthermore, the top of the keycap is provided with a concave annular groove, which is used to connect the key.

[0012] Furthermore, the key shell has a latch on its side, and the key shell is connected to the keyboard through the latch.

[0013] Furthermore, it also includes a sealing ring, which is fitted onto the keycap.

[0014] The present invention has the following advantages over the prior art:

[0015] This utility model provides an electrostatic capacitive silent keyboard switch, wherein the elastic rubber dome is engaged with the four corners of the lower side of the key shell by the four corners of the bottom of the key shell. The force applied to the key shell is transmitted to the four corners of the lower end of the elastic rubber dome through the four corners, thus shortening the downward pressure path and greatly reducing the possibility of positional deviation; and the keycap is connected to the top of the elastic rubber dome, and the double connection makes the connection more stable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0018] Figure 3 yes Figure 2 Sectional view at point AA.

[0019] Figure 4 This is an exploded view of the structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the key shell structure of this utility model.

[0021] Figure 6 This is a schematic diagram of the structure of the elastic rubber bowl of this utility model.

[0022] In the diagram: 1. Key shell; 2. Keycap; 3. Elastic rubber dome; 4. Conical spring; 5. Insert; 6. Slot; 7. Limiting strip; 8. Locking strip; 9. First limiting platform; 10. First straight section; 11. Dome; 12. First connecting groove; 13. Second straight section; 14. Conical section; 15. Connecting post; 16. Second limiting platform; 17. Second connecting groove; 18. Limiting groove; 19. Inner concave annular groove; 20. Buckle; 21. Sealing ring. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] See Figures 1-6 A capacitive silent keyboard switch includes a key shell 1, a keycap 2, an elastic rubber dome 3, and a conical spring 4. The keycap 2 is positioned above the key shell 1, the elastic rubber dome 3 is positioned below the key shell 1, and the conical spring 4 is positioned below the elastic rubber dome 3. The keycap 2 passes through the key shell 1 and connects to the top of the elastic rubber dome 3. The key shell 1 has inserts 5 at its four bottom corners, each insert 5 having a slot 6. The elastic rubber dome 3 has limiting strips 7 at its four lower side corners, each limiting strip 7 having a retaining strip 8. When the elastic rubber dome 3 is installed on the key shell 1, the inserts 5 fit against the inner side of the limiting strips 7, and the retaining strips 8 are engaged in the slots 6.

[0025] During assembly, firstly, insert the keycap 2 into the key shell 1 from bottom to top. At this time, the keycap 2 partially passes through the key shell 1. The keycap 2 is used to connect the key and bear the force of the key being pressed. Then, clamp the conical spring 4 into the bottom of the elastic rubber cup 3. Since the elastic rubber cup 3 is elastic and can deform, it can clamp the conical spring 4 well. Finally, connect the elastic rubber cup 3 to the key shell 1 and the keycap 2. Specifically, the top of the elastic rubber cup 3 is connected to the keycap 2, and the four corners of the lower side are clamped into the slots 6 at the bottom four corners of the key shell 1 by the retaining strips 8. Since the elastic rubber cup 3 is elastic and can deform, the retaining strips 8 can be interference-fitted into the slots 6.

[0026] When in use, keycap 2 is subjected to a downward force, and keycap 2 moves downward and squeezes the elastic rubber cup 3 and the conical spring 4. When the force on keycap 2 disappears, the elastic rubber cup 3 and the conical spring 4 have a rebound force, and the rebound force resets keycap 2.

[0027] In this embodiment, the lower side of the keycap 2 is provided with a first limiting platform 9, the key shell 1 is a hollow structure, the diameter of the first limiting platform 9 is larger than the inner diameter of the key shell 1, the keycap 2 passes through the key shell 1 so that the first limiting platform 9 is locked inside the key shell 1, and the first limiting platform 9 plays the role of preventing the keycap 2 from sliding out of the key shell 1.

[0028] In this embodiment, the elastic rubber cup 3 includes an integrally formed first straight portion 10 and a cup portion 11. The bottom of the cup portion 11 is provided with a first connecting groove 12. The conical spring 4 includes an integrally formed second straight portion 13 and a conical portion 14. The second straight portion 13 is inserted into the first connecting groove 12 to connect the conical spring 4 inside the elastic rubber cup 3. Because the elastic rubber cup 3 is elastic and can deform, it can lock the second straight portion 13 of the conical spring 4, thereby connecting the conical spring 4 to the elastic rubber cup 3.

[0029] In this embodiment, the elastic rubber cup 3 is connected to the keycap 2 via a plug-in connection. Specifically, the keycap 2 has a connecting post 15 at its bottom end, and a second limiting platform 16 at the lower side of the connecting post 15. The elastic rubber cup 3 has a second connecting groove 17 and a limiting groove 18 arranged sequentially from top to bottom. The diameter of the limiting groove 18 is larger than the diameter of the second connecting groove 17. The connecting post 15 is inserted into the second connecting groove 17, causing the second limiting platform 16 to be engaged within the limiting groove 18. Because the elastic rubber cup 3 is elastic and can deform, when the connecting post 15 and the second limiting platform 16 of the keycap 2 are inserted into the second connecting groove 17 and the limiting groove 18, the elastic rubber cup 3 deforms, and the second connecting groove 17 is opened to allow the second limiting platform 16 to be inserted into the limiting groove 18.

[0030] In this embodiment, the top of the keycap 2 is provided with a concave annular groove 19, which is used to connect the key. Specifically, the key is provided with a plug portion that matches the concave annular groove 19, and the plug portion is tightly inserted into the concave annular groove 19 to achieve the connection function.

[0031] In this embodiment, the key shell 1 has a snap fastener 20 on its side, and the key shell 1 is connected to the keyboard through the snap fastener 20. Specifically, the key shell 1 is inserted into the key slot of the keyboard, and the snap fastener 20 locks into the slot on the side of the key slot to achieve the connection function.

[0032] In this embodiment, the present invention also includes a sealing ring 21, which is fitted onto the keycap 2. When the keycap 2 is inserted into the key shell 1 from bottom to top, the sealing ring 21 clamps between the key shell 1 and the first limiting platform 9, thus providing a buffering effect.

[0033] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A static capacitance silent keyboard switch, comprising a key shell, a key cap, a resilient rubber bowl and a conical spring, the key cap is arranged above the key shell, the resilient rubber bowl is arranged below the key shell, the conical spring is arranged below the resilient rubber bowl, the key cap is connected with the top of the resilient rubber bowl through the key shell; characterized in that, The bottom of the key shell is provided with an insertion strip, the insertion strip is provided with a clamping groove, the lower end of the side of the elastic rubber bowl is provided with a limiting strip, and the limiting strip is provided with a clamping strip; when the elastic rubber bowl is installed on the key shell, the insertion strip is attached to the inner side of the limiting strip, and the clamping strip is clamped into the clamping groove.

2. An electrostatic capacity silent keyboard switch according to claim 1, wherein The lower end of the side of the key cap is provided with a first limiting table, the key shell is a hollow structure, the diameter of the first limiting table is greater than the inner diameter of the key shell, and the key cap passes through the key shell so that the first limiting table is clamped in the key shell.

3. An electrostatic capacity silent keyboard switch according to claim 1, wherein The elastic rubber bowl comprises a first straight part and a bowl part which are integrally formed, the bottom of the bowl part is provided with a first connecting groove, the conical spring comprises a second straight part and a conical part which are integrally formed, and the second straight part is inserted into the first connecting groove so that the conical spring is connected in the elastic rubber bowl.

4. The electrostatic capacity silent keyboard switch according to claim 1, wherein The elastic rubber bowl is connected with the key cap in a plug-in mode.

5. An electrostatic capacity silent keyboard switch according to claim 4, wherein The bottom end of the key cap is provided with a connecting column, the lower end of the side of the connecting column is provided with a second limiting table, the elastic rubber bowl is sequentially provided with a second connecting groove and a limiting groove from top to bottom, the diameter of the limiting groove is greater than that of the second connecting groove, and the connecting column is inserted into the second connecting groove so that the second limiting table is clamped in the limiting groove.

6. An electrostatic capacity silent keyboard switch according to claim 1, wherein The top of the key cap is provided with an inner recessed ring groove, and the inner recessed ring groove is used for connecting a key position.

7. An electrostatic capacity silent keyboard switch according to claim 1, wherein The side of the key shell is provided with a buckle, and the key shell is connected with a keyboard through the buckle.

8. An electrostatic capacity silent keyboard switch according to claim 2, wherein A sealing ring is further included, and the sealing ring is sleeved on the key cap.

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