Key structure of keyboard

Abstract

The utility model discloses a key structure of a keyboard, which comprises a key cap 30, a bottom plate 50, an X-shaped support 40 arranged between the key cap 30 and the bottom plate 50, a layer of thin film circuit switch 10 arranged on the bottom plate 50, and a silica gel key 20 arranged between the key cap 30 and the thin film circuit switch 10, and the key cap 30 and the silica gel key 20 are of an integrally formed structure based on a bijection technology. According to the novel key structure, the technological process can be reduced in the keyboard key assembling process, and the product yield is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of keyboards, and particularly relates to a key structure of a keyboard. Background Art

[0002] As Figure 1 shown, a conventional membrane keyboard for a notebook computer mainly includes a keycap 30, a bottom plate 50, an X-shaped bracket 40 disposed between the keycap 30 and the bottom plate 50, a layer of membrane circuit switch 10 disposed on the bottom plate 50, and a silicone key 20 disposed between the keycap 30 and the membrane circuit switch 10. The X-shaped bracket 40 is used to fix and stabilize the keycap 30. Among them, the membrane circuit switch 10 includes an upper circuit, a lower circuit, and a middle partition disposed between the upper circuit and the lower circuit.

[0003] In the above-mentioned membrane keyboard, the conventional silicone key 20 has an inverted bowl shape, which mainly includes a support portion, an elastic connection portion, and a pressing portion. The pressing portion has a protruding trigger portion on the inner side in the axial direction, and the support portion is also provided with an exhaust groove that penetrates through the inside and outside. Its bowl-shaped support portion is installed on the membrane circuit switch 10 to play a supporting role, and its bowl-bottom-shaped pressing portion 23 is used to contact the keycap 30. When the keycap 30 is pressed, the outer end in the axial direction of the pressing portion 23 of the silicone key 20 first contacts the keycap 30 and is driven by the keycap 30 and triggered downward in the axial direction. Furthermore, the trigger portion 231 at the inner end in the axial direction of the pressing portion 23 presses the inner membrane circuit switch 10 so that the electrode contact points 11 of the upper circuit and the lower circuit in the membrane circuit switch 10 contact each other through the partition holes opened at the corresponding positions of the middle partition to achieve conduction, and after the pressing is cancelled, the pressing portion 23 is reset by the elastic connection portion 22 of the silicone key 20 and drives the keycap 30 to reset.

[0004] However, when assembling the above-mentioned membrane keyboard, the prior art is to brush glue on the bottom of the silicone key 20 and then paste it on the membrane circuit switch 10, and cure and bond with the surface of the membrane circuit switch 10 through high-temperature baking, which has the risk of paste deviation and degumming in the manufacturing process, and the glue will have environmental problems and energy consumption problems caused by baking. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides a key structure of a keyboard, which includes a keycap, a bottom plate, an X-shaped bracket disposed between the keycap and the bottom plate, a layer of membrane circuit switch disposed on the bottom plate, and a silicone key disposed between the keycap and the membrane circuit switch. The keycap and the silicone key are an integrally formed structure based on a bi-injection process.

[0006] Among them, the silicone button includes a support part, an elastic connection part and a pressing part which are connected in sequence and integrally formed. The support part is provided with an exhaust groove that penetrates through the inside and outside. The inner side of the pressing part in the axial direction has a columnar triggering part. The pressing part of the silicone button is connected to the keycap.

[0007] Among them, the silicone button includes a support part, an elastic connection part and a pressing part which are connected in sequence and integrally formed. The support part is provided with an exhaust groove that penetrates through the inside and outside. The inner side of the pressing part in the axial direction has a columnar triggering part. The support part of the silicone button is connected to the keycap.

[0008] Through the above technical solution, the novel button structure of the present utility model can reduce the technological process during the assembly of keyboard buttons and effectively improve the product yield. Description of the Drawings

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0010] Figure 1 It is an axial cross-sectional schematic diagram of the button structure of the prior art;

[0011] Figure 2 It is a bottom view schematic diagram of the keycap and the silicone button disclosed by the present utility model;

[0012] Figure 3 It is based on what is disclosed in Embodiment 1 Figure 2 The A-A cross-sectional structure schematic diagram;

[0013] Figure 4 It is based on what is disclosed in Embodiment 2 Figure 2 The A-A cross-sectional structure schematic diagram.

[0014] The numbers in the figure represent: 10. Thin film circuit switch; 11. Electrode contact point; 20. Silicone button; 30. Keycap; 40. X-shaped bracket; 50. Bottom plate. Detailed Description of the Embodiments

[0015] The following will elaborate on the preferred embodiments of the present utility model in conjunction with the drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0016] Embodiment 1:

[0017] Refer to Figure 2 and 3, Embodiment 1 provides a key structure of a keyboard, including a keycap 30, a bottom plate 50, an X-shaped bracket 40 disposed between the keycap 30 and the bottom plate 50, a layer of membrane circuit switch 10 disposed on the bottom plate 50, and a silicone rubber key 20 disposed between the keycap 30 and the membrane circuit switch 10. The keycap 30 and the silicone rubber key 20 are an integrally formed structure based on the bi-injection process.

[0018] Among them, the silicone rubber key 20 includes a support portion, an elastic connection portion, and a pressing portion that are sequentially connected and integrally formed. The support portion is provided with an exhaust groove that penetrates through the inside and outside. The inner side of the axial direction of the pressing portion has a columnar triggering portion; the pressing portion of the silicone rubber key 20 is connected to the keycap 30.

[0019] Embodiment 2:

[0020] Reference Figure 2 and 4 , the difference between Embodiment 2 and Embodiment 1 is that the support portion of the silicone rubber key 20 is connected to the keycap 30.

[0021] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to the above embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A keyboard key structure, comprising a key cap (30) and a bottom plate (50), an X-shaped bracket (40) arranged between the key cap (30) and the bottom plate (50), a thin film circuit switch (10) arranged on the bottom plate (50), and a silicone key (20) arranged between the key cap (30) and the thin film circuit switch (10), characterized in that: The key cap (30) and the silicone key (20) are an integrally formed structure based on a double-shot process.

2. The key structure according to claim 1, characterized in that: The silicone key (20) comprises a supporting portion, an elastic connecting portion and a pressing portion which are connected in sequence and integrally formed, the supporting portion is provided with an exhaust groove which passes through inside and outside, and the pressing portion has a columnar triggering portion on the axial inner side; the pressing portion of the silicone key (20) is connected to the key cap (30).

3. The key structure according to claim 1, characterized in that: The silicone key (20) comprises a supporting portion, an elastic connecting portion and a pressing portion which are connected in sequence and integrally formed, the supporting portion is provided with an exhaust groove which passes through inside and outside, and the pressing portion has a columnar trigger portion on the axial inner side; the supporting portion of the silicone key (20) is connected to the key cap (30).

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