Keycap structure and keyboard comprising same

Abstract

The utility model discloses a keycap structure and a keyboard comprising the keycap structure, the keycap structure comprises a mounting cap and a fixed seat connected with the keyboard, a connecting piece is arranged between the fixed seat and the mounting cap, the top end of the connecting piece is provided with a hemispherical damping head, the inner wall of the mounting cap is correspondingly provided with a hemispherical pressure-bearing cavity, and the hemispherical damping head is provided with a cavity. The hemispherical damping head is embedded into the pressure bearing cavity in an interference fit mode to form elastic buffering in the vertical direction. A limiting boss is arranged on the upper surface of the fixing seat, a matched limiting groove is formed in the inner top face of the mounting cap, an elastic gasket is clamped between the limiting boss and the side wall of the limiting groove, and backlash compensation and impact absorption in the horizontal direction are formed; when the keycap is pressed, the hemispherical damping head elastically deforms in the pressure-bearing cavity to buffer vertical impact force, and the elastic gasket is compressed to inhibit horizontal shaking of the mounting cap. According to the utility model, through the synergistic effect of elastic buffering in the vertical direction and limiting in the horizontal direction, the shake of the keycap is effectively inhibited while the knocking impact force is obviously reduced.

Description

Technical Field

[0001] This utility model particularly relates to a keycap structure and a keyboard containing the keycap structure. Background Technology

[0002] With the continuous development of computer peripheral technology, the keyboard, as a core input device for human-computer interaction, is receiving increasing attention from users for its comfort, durability, and typing feel. Traditional mechanical or membrane keyboards typically use a rigid connection structure for their keycaps, such as direct insertion between the keycaps and the switches via a cross-shaped stem, or fixing them to the keyboard base with clips. However, this structure has the following problems:

[0003] 1. Lack of effective cushioning mechanism: When users type or play games at high speed for a long time, the rigid contact between the keycaps and the switches can easily generate a large impact force, leading to finger fatigue and possibly accelerating the wear and tear on the keyboard structure, affecting its service life.

[0004] 2. Horizontal wobble issue: Keycaps are prone to lateral shift during pressing due to uneven force or manufacturing tolerances, affecting typing accuracy and possibly accompanied by abnormal noises, thus reducing the user experience.

[0005] 3. Complex shock absorption structure: Some keyboards attempt to use rubber pads or springs for cushioning, but these often have complex structures, are difficult to assemble, and are hard to balance vertical shock absorption and horizontal stability.

[0006] To address these issues, some improvements have been implemented in existing technologies, such as adding a silicone cushioning layer to the bottom of the keycap or adding an elastic support structure to the switch. However, these solutions typically only address cushioning in a single direction (vertical or horizontal) and cannot simultaneously solve the problems of vertical impact absorption and horizontal wobble suppression. Furthermore, some poorly designed structures may result in delayed keycap rebound or inconsistent tactile feedback, negatively impacting the user experience. Utility Model Content

[0007] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a keycap structure and a keyboard including the keycap structure.

[0008] To solve the aforementioned technical problems, this utility model adopts the following technical solution:

[0009] A keycap structure includes a mounting cap and a mounting base connected to a keyboard. A connector is provided between the mounting base and the mounting cap. The top of the connector has a hemispherical shock-absorbing head. The inner wall of the mounting cap has a corresponding hemispherical pressure-bearing cavity. The hemispherical shock-absorbing head is embedded in the pressure-bearing cavity with an interference fit to form a vertical elastic buffer. The upper surface of the mounting base has a limiting boss, and the inner top surface of the mounting cap has a matching limiting groove. An elastic pad is sandwiched between the sidewall of the limiting boss and the limiting groove to form a horizontal gap compensation and impact absorption. When the keycap is compressed, the hemispherical shock-absorbing head undergoes elastic deformation in the pressure-bearing cavity to buffer the vertical impact force, while the elastic pad is compressed to suppress the horizontal wobbling of the mounting cap.

[0010] Preferably, the material of the hemispherical shock absorber head is thermoplastic polyurethane or silicone rubber.

[0011] Preferably, the connector includes a column with a radially protruding anti-detachment flange extending from its lower end; the fixing seat has an assembly through hole that fits the column with a clearance, and the elastic gasket has a buffer through hole for the column to pass through; when the hemispherical shock absorber head is pressed into the hemispherical pressure-bearing cavity, the anti-detachment flange forms a surface contact limit with the lower surface of the fixing seat, so that the elastic gasket is pre-compressed between the limiting boss and the mounting cap.

[0012] Preferably, the longitudinal cross-section of the fixing seat and the mounting cap are both trapezoidal structures that are wider at the bottom and narrower at the top, and the inclined sidewalls of the two trapezoidal structures are parallel to each other, forming a smooth transition surface with continuous gradient when they are assembled.

[0013] Preferably, the top outer surface of the mounting cap is curved, and the curved surface is provided with a printed, engraved or inlaid identification layer.

[0014] A keyboard includes a keyboard body and a plurality of keycaps, at least some of which have the aforementioned keycap structure; the bottom of the mounting base is provided with elastic claws, and the keyboard body is provided with corresponding snap-fit ​​grooves, wherein the elastic claws cooperate with the snap-fit ​​grooves to achieve a detachable connection.

[0015] The beneficial effects of this utility model are:

[0016] 1. Highly efficient vertical cushioning reduces impact and fatigue. The interference fit between the hemispherical shock absorber and the pressure chamber creates an elastic contact. When the keycap is pressed down, the shock absorber deforms, absorbing the vertical impact force and reducing the rigid recoil on the fingers, thus reducing fatigue from prolonged use. Compared to traditional rigid connection structures, this design effectively reduces typing noise, provides a softer bottoming-out feedback, and enhances the user experience.

[0017] 2. Horizontal stable support to suppress wobbling and offset. The limiting boss and limiting groove work together with the elastic pad to form a horizontal buffer structure. When the keycap is under force, the elastic pad is compressed to absorb lateral impact and prevent the keycap from wobbling or tilting. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of a keycap structure according to this application. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of a keycap structure according to this application. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of a keycap structure according to this application. Figure 3 ;

[0022] Figure 4 This is a schematic diagram of a keycap structure according to this application. Figure 4 ;

[0023] Figure 5 This is a schematic diagram of a keycap structure of this application assembled on a keyboard. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0025] The orientation shown in the accompanying drawings should not be construed as limiting the specific protection scope of this utility model, but is only for reference and understanding of preferred embodiments. The product components shown in the drawings can be changed in position, increased in number, or simplified in structure.

[0026] The “connection” described in the specification and the “connection” relationship between the components shown in the accompanying drawings can be understood as a fixed connection, a detachable connection, or a connection that forms an integral unit; it can be a direct connection or a connection through an intermediate medium. Those skilled in the art can understand the connection relationship according to the specific circumstances and can derive different implementation methods such as screwing, riveting, soldering, snap-fitting, or embedding to suitably replace it.

[0027] The directional terms such as up, down, left, right, top, and bottom mentioned in the instruction manual and the directions shown in the attached drawings indicate that the components can directly contact each other or contact each other through other features; for example, "up" can mean directly above or diagonally above, or it simply means above other objects; other directions can be understood by analogy.

[0028] The materials used to manufacture solid-shaped parts as shown in the specification and drawings may be metallic, non-metallic, or other synthetic materials. The machining processes used for solid-shaped parts may include stamping, forging, casting, wire cutting, laser cutting, injection molding, CNC milling, 3D printing, machining, etc. Those skilled in the art may adapt or combine the above materials and manufacturing processes according to different processing conditions, costs, and precision requirements.

[0029] The working principle of this utility model is as follows:

[0030] Example 1:

[0031] The keycap structure of this utility model mainly consists of a mounting cap 1, a fixing base 2, a connector, and an elastic washer 4. The inner wall of the mounting cap 1 has a hemispherical pressure-bearing cavity 12. The fixing base 2 and the mounting cap 1 are connected by a connector. The hemispherical shock-absorbing head 31 at the top of the connector is made of thermoplastic polyurethane and is embedded in the pressure-bearing cavity 12 with an interference fit, achieving elastic buffering in the vertical direction. The design of the hemispherical shock-absorbing head 31 has the following effects: Spherical contact: When the pressure increases, the contact method changes from point contact to surface contact, transmitting impact force more gently, improving the durability of the keycap and the comfort of pressing. Force line dispersion: The impact force is radially dispersed along the hemispherical curved surface, avoiding stress concentration, reducing the risk of damage, and extending the service life of the keyboard. Gradual deformation: The top of the hemispherical shock-absorbing head 31 gradually compresses and deforms, forming a buffer gradient. It can effectively buffer the impact force when pressed with different forces, improving the user experience and protecting the internal structure of the keyboard. This unique shock-absorbing design not only improves the feel of the keys but also significantly enhances the durability of the keycap structure and the overall performance of the keyboard. When the user presses the keycap, the hemispherical shock absorber 31 undergoes elastic deformation within the pressure chamber 12, effectively buffering the vertical impact force, making the key feel softer and more comfortable, while reducing the impact on the internal structure of the keyboard and lowering the risk of wear.

[0032] The limiting boss 21 on the upper surface of the fixing base 2 matches the limiting groove 11 on the inner top surface of the mounting cap 1. An elastic pad 4 is sandwiched between their side walls, forming a horizontal gap compensation and impact absorption structure. The elastic pad 4 can be made of materials such as rubber with a certain degree of elasticity, which can effectively suppress the horizontal shaking of the mounting cap 1 and ensure the accuracy and stability of key operation. When the keycap is subjected to a horizontal external force, the elastic pad 4 is compressed, which plays a buffering role and further improves the stability and durability of the keycap structure.

[0033] The connector includes a column 33, the lower end of which extends to form a radially protruding anti-detachment flange 34. The mounting base 2 has an assembly through hole 23 that fits clearanceably with the column 33, and the elastic gasket 4 has a buffer through hole 41 through which the column 33 passes. When the hemispherical damping head 31 is pressed into the hemispherical pressure-bearing cavity 12, the anti-detachment flange 34 forms a surface contact limit with the lower surface of the mounting base 2, pre-compressing the elastic gasket 4 between the limiting boss 21 and the mounting cap 1. This ensures a tight fit between the elastic gasket 4 and each component, preventing loosening or displacement of components during use and ensuring the overall stability of the keycap structure.

[0034] Both the mounting base 2 and the mounting cap 1 have a trapezoidal cross-section that is wider at the bottom and narrower at the top, and their inclined sidewalls are parallel to each other, forming a smooth transition surface with a continuous gradient during assembly. This design helps guide the mounting cap 1 to be accurately assembled with the mounting base 2, while making the overall appearance of the keycap more streamlined and aesthetically pleasing, conforming to ergonomic design, and improving the user's visual experience and usability. This design effectively reduces dust accumulation and improves dustproof performance, specifically in the following ways: The smooth transition surface makes it difficult for dust to adhere between the keycap and the mounting base. Dust particles usually seek out tiny gaps and uneven areas on the surface as adhesion points, while a smooth surface reduces these adhesion points, thereby reducing the possibility of dust accumulation. The top outer surface of the mounting cap 1 is curved, and a marking layer 5 is printed on the curved surface to indicate key functions and other information for user convenience.

[0035] Example 2:

[0036] The keyboard of this invention includes a keyboard body and multiple keycaps, wherein at least some of the keycaps adopt the keycap structure described in Embodiment 1 above. The bottom of the mounting base 2 is provided with a flexible claw 22, and the keyboard body is correspondingly provided with a locking groove. The flexible claw 22 cooperates with the locking groove to achieve a detachable connection between the keycaps and the keyboard body. This connection method is simple to operate, allowing users to easily install or remove the keycaps, facilitating cleaning, replacement, or repair. When replacing a keycap, simply press the flexible claw 22 gently to disengage it from the locking groove to remove the keycap; during installation, align the flexible claw 22 with the locking groove and press until it locks in place. The flexible claw 22 has a certain elastic deformation capacity, ensuring the stability of the connection between the keycaps and the keyboard body, preventing loosening or detachment during normal use.

[0037] The keycap structure and keyboard of this utility model, through optimized connection method and buffer design, can significantly improve the stability of the keycaps and the typing feel. The specific technical effects are as follows:

[0038] 1. Highly efficient vertical cushioning reduces impact and fatigue. The interference fit between the hemispherical shock absorber head 31 and the pressure-bearing cavity 12 creates an elastic contact. When the keycap is pressed down, the shock absorber head deforms, absorbing the vertical impact force and reducing the rigid recoil on the fingers, thus reducing fatigue from prolonged use. Compared to traditional rigid connection structures, this design effectively reduces typing noise, provides a softer bottoming-out feedback, and enhances the user experience.

[0039] 2. Horizontal stable support to suppress shaking and offset. The limiting boss 21 and the limiting groove 11 work together with the elastic pad 4 to form a horizontal buffer structure. When the keycap is subjected to force, the elastic pad is compressed to absorb lateral impact and prevent the keycap from shaking or tilting.

[0040] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the present invention, but rather the scope of protection is defined by the content of the claims.

Claims

1. A key cap structure comprising a mounting cap (1) and a fixing base (2) connected with a keyboard, characterized in that, A connector is provided between the fixed base (2) and the mounting cap (1). The top of the connector is provided with a hemispherical damping head (31). The inner wall of the mounting cap (1) is provided with a corresponding hemispherical pressure-bearing cavity (12). The hemispherical damping head (31) is embedded in the pressure-bearing cavity (12) with an interference fit to form a vertical elastic buffer. The upper surface of the fixed base (2) is provided with a limiting boss (21). The inner top surface of the mounting cap (1) is provided with a matching limiting groove (11). An elastic pad (4) is sandwiched between the limiting boss (21) and the side wall of the limiting groove (11) to form a horizontal gap compensation and impact absorption. When the keycap is pressed, the hemispherical damping head (31) undergoes elastic deformation in the pressure-bearing cavity (12) to buffer the vertical impact force. At the same time, the elastic pad (4) is compressed to suppress the horizontal shaking of the mounting cap (1).

2. The keycap structure of claim 1, wherein The material of the hemispherical shock absorber head (31) is thermoplastic polyurethane or silicone rubber.

3. The keycap structure of claim 1, wherein The connector includes a column (33) with a radially protruding anti-detachment flange (34) extending from its lower end; the fixed base (2) has an assembly through hole (23) that fits the column (33) with a clearance, and the elastic gasket (4) has a buffer through hole (41) through which the column (33) passes; when the hemispherical shock absorber head (31) is pressed into the hemispherical pressure-bearing cavity (12), the anti-detachment flange (34) and the lower surface of the fixed base (2) form a surface contact limit, so that the elastic gasket (4) is pre-compressed between the limiting boss (21) and the mounting cap (1).

4. The keycap structure of claim 1, wherein The longitudinal cross-section of the fixed base (2) and the mounting cap (1) are both trapezoidal structures with a wider bottom and a narrower top. The inclined sidewalls of the two trapezoidal structures are parallel to each other, and when they are assembled, they form a smooth transition surface with a continuous gradient.

5. The keycap structure of claim 1, wherein The top outer surface of the mounting cap (1) is an arc surface, and the arc surface is provided with a printed, engraved or inlaid identification layer (5).

6. A keyboard comprising a keyboard body and a plurality of keycaps, characterized in that: At least some of the keycaps are keycap structures as described in any one of claims 1-5; the bottom of the fixing base (2) is provided with elastic claws (22), and the keyboard body is provided with corresponding snap-fit ​​grooves, and the elastic claws (22) cooperate with the snap-fit ​​grooves to achieve detachable connection.

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