Key structure

Abstract

The utility model discloses a key structure, which comprises a key base, a circuit board, an elastic element and a key cap which are sequentially arranged from bottom to top, and further comprises an inner support with one end fixed on the key base and an outer support rotationally connected with the outer side of the inner support to form a scissor structure, and the inner support and the outer support are connected through a shaft; protruding points are arranged on the two outer side faces of the inner support, deformation grooves are formed in the positions where the protruding points are arranged, and trapezoid grooves corresponding to the protruding points are formed in the outer support. When the key cap is pressed, the inner support is pressed downwards under stress, and the protruding points make contact with the upper ends of the trapezoidal grooves. Pressing is continued, the convex points are extruded by the side faces, and then the outer sides of the deformation grooves deform to generate resistance; pressing is continued, the convex points enter the trapezoidal grooves, the outer sides of the deformation grooves are restored to the original positions, the resistance disappears, and therefore severe sudden change feedback is formed; the button switch is simple in structure, can be integrally formed, has the advantages of being light, thin, compact and small in occupied space, and can obtain strong button feedback.

Description

Technical Field

[0001] This utility model relates to the field of button technology, and in particular to a button structure. Background Technology

[0002] Common keyboards include mechanical keyboards, membrane keyboards, and scissor-switch keyboards. Scissor-switch keyboards are more common in laptops and slim keyboards, using a scissor-like mechanism to stabilize the keys. However, the key feedback of scissor-switch keyboards is not as pronounced as that of mechanical keyboards. Good key feedback allows users to control the keys more accurately and efficiently when typing or gaming, improving comfort and enjoyment. A common method to improve the key feedback of scissor-switch keyboards is to lengthen the key travel, but this method requires significant modifications to the scissor-switch structure and is relatively complex. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to provide a button structure that is simple in structure and can obtain strong button feedback.

[0004] Technical solution: The button structure of this utility model includes a button base 1, a circuit board 2, an elastic element 3, a keycap 4, an inner bracket 5 fixed at one end to the button base, and an outer bracket 6 connected to the outer side of the inner bracket to form a scissor structure. The inner bracket has protrusions 501 on both outer sides, and the outer bracket has corresponding trapezoidal grooves 601.

[0005] Furthermore, the cross-section of the protrusion 501 is narrower at the top and wider at the bottom; the inner support is also provided with a deformation groove 502, and the protrusion is located on the outer side of the deformation groove.

[0006] Preferably, the inner bracket 5 has protruding connecting shafts 503 on both outer sides, and the outer bracket 6 has corresponding connecting holes 602 on its inner side; one end of the inner bracket is connected to the inner surface of the keycap and the other end is connected to the key base, and one end of the outer bracket is connected to the inner surface of the keycap and the other end is connected to the key base.

[0007] Furthermore, the button base 1 is provided with a buckle 101 for fixing the inner bracket and the outer bracket. The elastic element is fixed to the circuit board by adhesive or other means and placed in the middle of the button base.

[0008] Beneficial effects: Compared with the prior art, the present invention has the following advantages: (1) It only requires adding protrusions, opening deformation grooves and trapezoidal grooves on the original scissor foot structure, which is simple in structure and can be integrally formed; (2) One side of the deformation groove deforms and recovers in a short time, forming a violent change, and superimposed with the smooth transition of the elastic element, which can provide users with strong key feedback without changing the key travel, thus improving the user experience; (3) It eliminates the complicated production process and can also reduce production costs. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Figure 2 This is a schematic diagram of the internal support structure in this utility model;

[0011] Figure 3 This is a schematic diagram of the structure of the external support in this utility model;

[0012] Figure 4 This is a schematic diagram of the internal support structure in Embodiment 2 of this utility model;

[0013] Figure 5 This is a cross-sectional view of the present invention when the protrusion does not enter the trapezoidal groove;

[0014] Figure 6 This is a cross-sectional view of the protrusion just entering the trapezoidal groove in this utility model;

[0015] Figure 7 This is a cross-sectional view of the protrusion fully entering the trapezoidal groove in this utility model;

[0016] Figure 8 This is a schematic diagram of the button base in this utility model;

[0017] Figure 9 This is a schematic diagram of the structure of the outer support in Embodiment 3 of this utility model;

[0018] Figure 10 This is a cross-sectional view of the convex point fully entering the trapezoidal groove in Embodiment 3 of this utility model. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0020] As shown in the figure, the button structure of this utility model comprises, from bottom to top, a button base 1, a circuit board 2, an elastic element 3, a keycap 4, an inner support 5, and an outer support 6. The inner and outer supports are connected by a rotating shaft 502 to form an X-structure, i.e., a scissor-type structure. The button base 1 has clips 101; two clips on one side are fastened into the first mounting holes 504 on the edge of the inner support; two clips on the other side are fastened into the second mounting holes 603 on the edge of the outer support. The circuit board 2 is laid on the button base, integrating various electronic components, mainly responsible for converting button signals into electrical signals. The circuit board 2 is a flexible circuit board, lightweight and space-saving. The center of the button base is used to install the elastic element 3, which can be glued or connected in other ways as needed. The top of the elastic element connects to the center point 401 of the keycap. The elastic element 3 can be made of silicone, rubber, or other materials. When the keycap is pressed, the elastic element also experiences downward pressure. Because of the use of elastic material, a smooth transition is achieved, providing a tactile feedback curve with a smooth transition.

[0021] The upper surface of keycap 4 is the part that the user directly contacts, and it is usually made of plastic. The surface can have different processing techniques, such as matte, glossy, or painted, to provide different tactile and aesthetic effects. The shape and size of the keycap are adapted to the inner and outer supports and finger operation, allowing users to accurately press the keys. The lower surface of keycap 4 has a retainer 402 and a fixing seat 403. The retainer 402 fixes the inner support to the keycap, and the two ends of the outer support are inserted into the fixing seat 403 to connect the outer support to the keycap. The inner and outer supports intersect to form a scissor-switch structure, and the intersecting point relies on the cooperation of the connecting shaft 503 and the connecting hole 602 to achieve a rotatable connection between the inner and outer supports.

[0022] Example 1

[0023] like Figure 2 , Figure 3 As shown, the inner support has a hole in its center for the elastic element 3 to pass through, and the outer support also has one. A protrusion 501 is provided on each side of the inner support. The cross-section of the protrusion is teardrop-shaped, and the angle of the bottom edge of the protrusion is adjustable, set according to the different materials of the inner support and the required feedback force. The maximum angle cannot exceed the material's self-locking angle to avoid jamming during pressing. A deformation groove 502 is provided on the inner support, and the protrusion is located on the outside of the deformation groove to provide space for deformation during pressing. A trapezoidal groove 601 is provided on the outer support at the position corresponding to the protrusion. Figure 5 As shown, when the user presses the keycap, the downward pressure is transmitted to the inner bracket, which is then pressed down, causing the protrusion to contact the upper end of the trapezoidal groove; continuing to apply downward pressure, as... Figure 6As shown, the protrusion is squeezed by both sides of the inner and outer supports. The protrusion squeezes the outer side of the deformation groove, and the deformation of the outer side of the deformation groove generates resistance; as the pressure continues, as... Figure 7 As shown, the protrusion fully enters the trapezoidal groove, and the outer side of the deformation groove returns to its original position, eliminating resistance. The rapid deformation and subsequent recovery of one side of the deformation groove, combined with the smooth transition of the elastic element, provides strong key feedback to the user without altering the key travel, thus enhancing the user experience.

[0024] Example 2

[0025] like Figure 4 As shown, another method of opening the deformation groove is provided, in which the top of the deformation groove is opened, and the other components are the same as in embodiment 1, which can achieve the same effect.

[0026] Example 3

[0027] like Figure 9 As shown, the protrusion can be set on the inner side of the outer bracket. Similarly, a deformation groove is formed at the location of the protrusion, and a trapezoidal groove that mates with the protrusion is formed on the inner bracket. Figure 10 The image shown is a cross-sectional view when the keycap is continuously pressed down and the bump is fully inserted into the trapezoidal groove. By setting the bump on the outer bracket, one side of the deformation groove deforms and recovers in a short time, forming a dramatic change, which can also provide the user with strong key feedback.

[0028] Furthermore, the bumps can also be placed on the keycaps. As long as a matching trapezoidal groove is set in the corresponding position, and a deformation groove for extrusion deformation is set on one side of the bump, the same technical effect can be achieved.

Claims

1. A key structure comprising a key base (1), a circuit board (2), an elastic element (3) and a key cap (4) arranged in order from bottom to top, characterized in that, The inner support (5) is fixed on the bottom of the key, and the outer support (6) is connected with the outer side of the inner support to form a scissor structure.

2. The key structure according to claim 1, wherein The cross section of the convex point (501) is narrow at the top and wide at the bottom.

3. The key structure according to claim 1, wherein The inner support is also provided with a deformation groove (502), and the convex point is arranged on the outer side of the deformation groove.

4. The key structure according to claim 1, wherein The outer side of the inner support (5) is provided with a convex connecting shaft (503), and the inner side of the outer support (6) is provided with a connecting hole (602) corresponding to the connecting shaft.

5. The key structure according to claim 1, wherein One end of the inner support (5) is connected to the lower surface of the key cap, and the other end is connected to the bottom of the key.

6. The key structure according to claim 1, wherein The elastic element (3) is fixedly connected to the middle of the bottom of the key.

7. The key structure according to claim 1, wherein The buckle (101) for fixing the inner support and the outer support is arranged on the bottom of the key.

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