Key structure

Abstract

The utility model discloses a key structure which comprises a key seat, a pressing handle and a reset spring, the reset spring is located between the pressing handle and the key seat, the bottom of the pressing handle extends downwards to form a guide column, the bottom of the key seat is provided with a guide table, a guide cavity is formed in the guide table, the guide column can be inserted into the guide cavity of the guide table in an up-down moving mode, and the bottom of the guide cavity extends upwards to form a protruding structure. When the pressing handle is pressed, the pressing handle can directly abut against the protruding structure, and a cavity structure is formed between the protruding structure and the inner wall of the guide cavity. The cavity structure formed between the protruding structure and the inner wall of the guide cavity provides a storage space for the lubricating agent, when the pressing handle is pressed, the pressing handle directly abuts against the protruding structure instead of directly impacting the bottom of the guide cavity, and abnormal sound generated by the pressing handle and the lubricating oil in the impacting process is effectively reduced; and meanwhile, by combining the design of a coarse grain surface at the top of the convex structure, the problem that the guide pillar is stuck due to excessive oil is avoided, and the sensitivity and the response speed of the key are kept.

Description

Technical Field

[0001] This utility model relates to the field of buttons, specifically to a button structure. Background Technology

[0002] In existing key structures, impact noise is easily generated when the keycap contacts the key socket. The conventional solution is to apply lubricant to the guide cavity. On the one hand, lubricant can lubricate the mechanical switches, reduce friction between the mechanical switches, improve the keyboard's response speed and sensitivity, and thus make the typing feel smoother. On the other hand, the collision and friction of the internal mechanical components of the switches can cause noise; lubricating the switches can reduce friction and collision when pressing the keys, thereby reducing keyboard noise.

[0003] However, this method has obvious drawbacks: the guide post will stick to the lubricating oil during movement, causing a "smacking" noise; uneven oil distribution can easily create airtight spaces, affecting the key's rebound performance; and oil loss over long-term use will reduce the noise reduction effect. Furthermore, the amount of lubricating oil applied must be moderate and even; too much or too little can have adverse effects. Too much may cause the keys to become sticky and insensitive, producing a clicking sound when the switches are pressed, or affecting the feel of the switches, making them feel mushy; too little may not achieve the desired lubrication effect. Because this oil amount is difficult to control precisely and can easily affect efficiency, this application improves the key structure to solve this problem. Utility Model Content

[0004] To address the aforementioned problems, this utility model aims to provide a button structure for eliminating abnormal noises caused by lubricating oil after oiling and preventing lubricating oil from sticking.

[0005] To achieve this technical objective, the present invention provides a key structure comprising a key base, a key handle, and a return spring. The return spring is located between the key handle and the key base. A guide post extends downward from the bottom of the key handle. A guide platform is provided at the bottom of the key base. A guide cavity is formed within the guide platform. The guide post can be inserted vertically into the guide cavity of the guide platform. A protruding structure extends upward from the bottom of the guide cavity. When the key handle is pressed, the key handle can directly abut against the protruding structure. A cavity structure is formed between the protruding structure and the inner wall of the guide cavity.

[0006] Preferably, the protrusion structure is configured as a frustum structure located at the center of the bottom of the guide cavity, and a cavity structure is formed between the outer periphery of the frustum structure and the inner wall of the guide cavity.

[0007] Preferably, the protruding structure is configured as a U-shaped structure located at the center of the bottom of the guide cavity, and the U-shaped structure forms a cavity structure with the inner wall of the guide cavity.

[0008] Preferably, the protrusion structure consists of a plurality of spaced columnar protrusions with flush upper surfaces, and the columnar protrusions and the inner wall of the guide cavity form a cavity structure.

[0009] Preferably, the surface of the protrusion that abuts against the guide post is a textured surface.

[0010] Preferably, the rough textured surface is one of a plurality of dot-shaped grooves, a plurality of dot-shaped protrusions, a plurality of linear protrusions, or a grid protrusion structure.

[0011] The beneficial effects of this utility model are: the cavity structure formed between the raised structure and the inner wall of the guide cavity provides storage space for lubricant; when the button is pressed, the button directly abuts against the raised structure instead of directly impacting the bottom of the guide cavity, effectively reducing the abnormal noise generated by the impact and the lubricant; at the same time, combined with the rough texture design on the top of the raised structure, the problem of the guide post sticking due to excessive oil is avoided, maintaining the sensitivity and response speed of the button. Attached Figure Description

[0012] Figure 1 This is an exploded view of the present invention;

[0013] Figure 2 This is a schematic diagram of the structure of the rough textured surface in this utility model;

[0014] Figure 3 This is an enlarged cross-sectional view of the frustum structure in this utility model;

[0015] Figure 4 This is a cross-sectional view of the initial state of this utility model;

[0016] Figure 5 This is a cross-sectional view of the present invention in the pressing state.

[0017] In the diagram: 1. Key seat; 2. Button; 3. Return spring; 4. Guide post; 5. Guide platform; 6. Guide cavity; 7. Frustum structure; 8. Cavity structure; 9. Rough surface. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. To provide a clear and complete description of the technical solution, the following embodiments are selected for illustration; these embodiments are only some embodiments of the present invention; other embodiments obtained based on this application without creative effort are all within the scope of protection of the present invention.

[0019] In the following embodiments, it should be noted that the terms "upper," "lower," "left," "right," "inner," "outer," "top / bottom," etc., are all based on the orientation or positional relationship shown in the accompanying drawings and are only for the purpose of clearly describing this embodiment. They do not indicate or imply that the device or element referred to must have a specific orientation, and therefore should not be construed as a limitation of this application. At the same time, the terms "first" and "second" in the embodiments are only used for descriptive purposes and do not represent an indication or implication of relative importance.

[0020] The button structure of this application has the following embodiments.

[0021] Example 1: As Figure 1-5 As shown, a button structure in this embodiment includes a key base 1, a button 2, and a return spring 3. The return spring 3 is located between the button 2 and the key base 1 and is used to reset the button 2 after it is pressed. A guide post 4 extends downward from the bottom of the button 2 and can be inserted into the guide cavity 6 in the guide platform 5 at the bottom of the key base 1 when the button 2 is pressed.

[0022] The bottom of the guide cavity 6 has an upwardly extending protruding structure. In this embodiment, the protruding structure is configured as a frustum structure 7 located at the center of the bottom of the guide cavity 6. A cavity structure 8 is formed between the outer periphery of the frustum structure 7 and the inner wall of the guide cavity 6, providing a storage space for the lubricant.

[0023] When the button 2 is pressed, the guide post 4 of the button 2 directly abuts against the upper surface of the frustum structure 7. Due to the presence of the cavity structure 8 and the shape design of the frustum structure, the cavity structure 8 not only serves as a lubricating oil storage area, but also promotes air circulation, effectively avoiding the problem of the guide post 4 sticking due to excessive oil, and improving the smoothness and stability of the button.

[0024] Example 2: The button structure in this example is basically the same as that in Example 1, except for the design of the raised structure. In this example, the raised structure is configured as a U-shaped structure located at the center of the bottom of the guide cavity, and the U-shaped structure forms a cavity structure with the inner wall of the guide cavity. The U-shaped structure itself has a cavity structure, and at the same time, the upper surface of the U-shaped structure is at the same horizontal position, ensuring that the pressure can be evenly distributed and remain stable when the guide post is pressed.

[0025] This design not only provides additional oil storage space and air passages, but also increases structural stability, further improving the noise reduction effect and service life of the buttons.

[0026] Example 3: The button structure in this example is similar to that in Examples 1 and 2, but the design of the raised structure is different. In this example, the raised structure consists of a plurality of spaced columnar protrusions with flush upper surfaces, and the columnar protrusions and the inner wall of the guide cavity form a cavity structure.

[0027] This design provides more oil storage space and air passages, which helps the lubricant to be evenly distributed around the guide pillars, further reducing noise generation. At the same time, the dispersed design of multiple columnar protrusions also increases the strength and stability of the structure.

[0028] In the above embodiments, the surface of the raised structure that abuts against the guide post 4 can be designed as a textured surface 9. The textured surface 9 can be one of a plurality of dot-shaped grooves, a plurality of dot-shaped protrusions, a plurality of linear protrusions, or a grid-like protrusion structure formed by methods such as machining, laser marking, or chemical etching. The textured surface design can further reduce the direct contact area between the guide post 4 and the raised structure, reduce the contact area with lubricating oil, further reduce the noise generated when in contact with lubricating oil, and improve the smoothness and stability of the button.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present utility model should be included within the protection scope of the technical solution of the present utility model.

Claims

1. A button structure, comprising a key base (1), a button handle (2), and a return spring (3), wherein the return spring (3) is located between the button handle (2) and the key base (1), a guide post (4) extends downward from the bottom of the button handle (2), a guide platform (5) is provided at the bottom of the key base (1), a guide cavity (6) is provided in the guide platform (5), and the guide post (4) is movably inserted into the guide cavity (6) of the guide platform (5), characterized in that: The bottom of the guide cavity (6) extends upward with a protruding structure. When the handle (2) is pressed, the handle (2) can directly abut against the protruding structure. A cavity structure (8) is formed between the protruding structure and the inner wall of the guide cavity (6).

2. The button structure according to claim 1, characterized in that: The protruding structure is configured as a frustum structure (7) located at the bottom center of the guide cavity (6), and a cavity structure (8) is formed between the outer periphery of the frustum structure (7) and the inner wall of the guide cavity (6).

3. The button structure according to claim 1, characterized in that: The protruding structure is configured as a U-shaped structure located at the bottom center of the guide cavity (6), and the U-shaped structure forms a cavity structure (8) with the inner wall of the guide cavity (6).

4. The button structure according to claim 1, characterized in that: The protrusion structure consists of a plurality of spaced columnar protrusions with flush upper surfaces, and the columnar protrusions and the inner wall of the guide cavity (6) form a cavity structure (8).

5. The button structure according to any one of claims 1-4, characterized in that: The surface of the protrusion that abuts against the guide post (4) is a rough-textured surface (9).

6. The button structure according to claim 5, characterized in that: The rough textured surface (9) is one of a plurality of dot-shaped grooves, a plurality of dot-shaped protrusions, a plurality of linear protrusions, or a grid protrusion structure.

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