Noise reduction structure switch and keyboard

Abstract

The utility model relates to a noise reduction structure switch and a keyboard, the switch comprises a button, a base and a cover sheet, the cover sheet and the base are connected together and form a cavity inside, the button is slidably connected with the base and the cover sheet, the upper part of the button penetrates out of the cover sheet, a spring is arranged in the cavity, one end of the spring is connected to the base, and the other end of the spring is connected to the keyboard. The other end of the spring abuts against the button. The side surface of the button is provided with an elastic part which is vertically hooked, at least one side of the elastic part is provided with a fixed convex edge, and the elastic part is higher than the fixed convex edge; and the upper part of the inner side of the cover plate is provided with a limiting platform which is used for abutting against the elastic part and the fixed convex edge to limit the button from popping out of the cover plate. When the button rebounds, the elastic part (buffer point) of the button firstly contacts with the limiting platform of the cover plate, and then the fixed convex edge of the button contacts with the limiting platform of the cover plate, so that the design can effectively prevent the fixed convex edge (hard grounding point) from directly contacting with the limiting platform of the cover plate to generate larger noise, and the use feeling of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of keys, in particular to a noise reduction structure switch and a keyboard. Background Art

[0002] In the prior art, keyboard keys are basically used by pressing the keycap to move the shaft inside the key downward to achieve input. During the process of the key shaft being forced up and down, it will continuously hit the inner top surface of the key shell and the inner bottom surface of the key base, thereby generating additional noise. This noise significantly reduces the usability of the key product and reduces the product's competitiveness in the market. In order to reduce the noise of the key, noise reduction key patents have appeared in the prior art, such as Chinese patent CN212570795U - Buffered Low-Noise Key. The soft spring structure used in the above patent is a horizontal device, which is easy to fatigue and break. The hard point and soft spring require separate devices, which is costly and difficult to produce. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a switch and a keyboard with a noise reduction structure.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A noise reduction structure switch includes a button, a base and a cover plate, wherein the cover plate is connected to the base and a cavity is formed therein, the button is slidably connected to the base and the cover plate, and the upper part of the button passes through the cover plate, a spring is provided in the cavity, one end of the spring is connected to the base, and the other end of the spring abuts the button; a vertically hooked elastic portion is provided on the side of the button, and a fixed ridge is provided on at least one side of the elastic portion, and the elastic portion is higher than the fixed ridge; a limiting platform is provided on the upper inner side of the cover plate for abutting against the elastic portion and the fixed ridge to limit the button from popping out of the cover plate.

[0006] Furthermore, the elastic portion is formed by slotting.

[0007] Furthermore, a center column is provided downwardly extending from the middle of the button, and a magnet mounting groove for fixing the magnet is provided at the bottom of the center column.

[0008] Furthermore, the button is provided with an annular groove surrounding the outer side of the center column, and the upper part of the spring is sleeved in the annular groove.

[0009] Furthermore, the outer wall of the button is slidably sleeved in the guide groove in the middle of the cover plate; the middle of the base is provided with a guide cavity arranged vertically, and the middle column is slidably sleeved in the guide cavity.

[0010] Furthermore, the outer wall of the cover is buckled and connected to the corresponding buckle platform on the outer wall of the base through an L-shaped buckle.

[0011] Furthermore, the four top corners of the bottom of the cover are respectively provided with positioning posts, and the top of the base is respectively provided with positioning holes corresponding to the positioning posts.

[0012] The present invention provides a keyboard, comprising the switch mentioned above.

[0013] The utility model adopts the above technical solution, which has the following beneficial effects:

[0014] 1. During the button's rebound process, the button's elastic portion (buffer point) first contacts the cover's limit platform. After this contact, the button's fixed ridges then contact the cover's limit platform. This design effectively prevents the fixed ridges (hard landing points) from directly contacting the cover's limit platform, generating loud noise and improving user experience.

[0015] 2. The elastic part formed by the slot and hooked vertically has the characteristics of high toughness, easy deformation and not easy to break;

[0016] 3. The elastic part (buffer point) and the fixed ridge (buffer point) are designed on the side wall of the button, which has the characteristics of simple molding and low cost;

[0017] 4. In addition, the elastic portion formed by the vertical slot in the present invention has the following advantages over the horizontal elastic member in the prior art: the noise reduction effect can be controlled by the length of the slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the overall structure of the switch of the utility model;

[0020] Figure 2 This is a cross-sectional view of the overall structure of the switch of the utility model;

[0021] Figure 3 This is a cross-sectional view of the switch of the utility model in actual application;

[0022] Figure 4 Schematic diagram of the three-dimensional structure of the button;

[0023] Figure 5 This is a schematic diagram of the button's three-dimensional structure from another perspective;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of a button with a notch;

[0025] Figure 7 Schematic diagram of the three-dimensional structure of the cover plate;

[0026] Figure 8A schematic diagram of the three-dimensional structure of the cover plate from another perspective;

[0027] Figure 9 Schematic diagram of the three-dimensional structure of the base;

[0028] Figure 10 This is a schematic diagram of the working principle of the switch of the utility model. DETAILED DESCRIPTION

[0029] like Figure 1-10 As shown, the present invention discloses a noise-reduction switch comprising a button 1, a base 2, and a cover 3. The cover 3 and base 2 are connected together to form a cavity. Specifically, the outer wall of the cover 3 engages with corresponding latches 21 on the outer wall of the base 2 via L-shaped latches 31, limiting vertical movement of the cover 3. Furthermore, positioning posts 32 are provided at the four corners of the bottom of the cover 3, and positioning holes 22 corresponding to each of the positioning posts 32 are provided on the top of the base 2. This design prevents horizontal movement of the cover 3 when the two are engaged.

[0030] Button 1 is slidably connected to base 2 and cover 3, with the upper portion of button 1 extending beyond cover 3. A spring 4 is located within the cavity, one end of which is connected to base 2, while the other end of spring 4 abuts button 1. Vertically raised elastic portions 11 are symmetrically positioned on opposite sides of button 1. Fixed ridges 12 are located on at least one side of these elastic portions, with the elastic portions 11 positioned higher than the fixed ridges 12. A stopper 33 is located on the upper inner side of cover 3, abutting against the elastic portions 11 and fixed ridges 12 to prevent button 1 from popping out of cover 3. Among them, the elastic part 11 is formed by grooves on both sides and hollowed-out grooves on the back, so the elastic part 11 can provide sufficiently soft contact. During the rebound process of the button 1, when the elastic part 11 hits the limit platform 33 of the cover 3, the elastic part 11 is subjected to a downward force and a force to be retracted inwardly of the button 1, which plays an effective buffering and silencing role. The function of the fixed ridges 12 is to prevent the button 1 from popping out of the cover 3, especially when the user pulls off the keycap, there is sufficient positioning ability.

[0031] A center column 13 extends downward from the center of button 1. A magnet mounting groove is located at the bottom of center column 13, which holds magnet 5. In practice, magnet 5 is inserted into the magnet mounting groove at the bottom of center column 13. The entire switch is secured to PCB 6, with magnet 5 corresponding to Hall effect element 7 on PCB 6. Furthermore, an annular groove 14 surrounds center column 13 on button 1, and the upper portion of spring 4 fits within this groove.

[0032] In order to achieve the limit of the button 1 when sliding up and down, the outer wall of the button 1 is slidably sleeved in the guide groove 34 in the middle of the cover plate 3; a guide cavity 23 arranged vertically is provided in the middle of the base 2, and the middle column 13 is slidably sleeved in the guide cavity 23.

[0033] Figure 5 The annular groove 14 of the middle button 1 is a non-notch structure; Figure 6 The annular groove 14 of the middle button 1 is designed with a notch 15 .

[0034] The elastic part 11 formed by the vertical slot in the present invention has the following advantages over the horizontal elastic member in the prior art: the noise reduction effect can be controlled by the length of the slot (the longer the slot, the better the elasticity of the elastic part and the better the noise reduction effect).

[0035] The working principle of this utility model:

[0036] Initial static state: the elastic portion 11 (buffering point) and the fixed ridge 12 (hard landing point) of the button 1 are in contact with the limiting platform 33 of the cover 3.

[0037] Pressed state: the buffer point and the hard landing point of the button 1 are separated from the limiting platform 33 of the cover plate 3.

[0038] Rebound state: The buffer point of button 1 first contacts the limit platform 33 of cover plate 3, and then the hard landing point of button 1 contacts the limit platform 33 of cover plate 3 (due to the height difference, the buffer point will be deformed) to avoid the hard landing point directly contacting the limit platform 33 of cover plate 3 to generate noise.

[0039] The noise reduction structure switch of the utility model can be applied to a keyboard.

[0040] The above describes the specific implementation of the present invention, but those skilled in the art should understand that this is only an example. Those skilled in the art can make various changes or modifications to this implementation without departing from the principle and essence of the present invention, but these changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A noise reduction switch comprising a button, a base, and a cover. The cover and base are connected together to form a cavity. The button is slidably connected to the base and the cover, and the upper portion of the button extends through the cover. A spring is disposed within the cavity, with one end of the spring connected to the base and the other end abutting the button. The following characteristics are present: The side of the button is provided with a vertically hooked elastic part, and a fixed ridge is provided on at least one side of the elastic part, and the elastic part is arranged higher than the fixed ridge; the upper inner side of the cover is provided with a limiting platform for abutting against the elastic part and the fixed ridge to limit the button from popping out of the cover.

2. The noise reduction structure switch according to claim 1, characterized in that: The elastic portion is formed by slotting.

3. The noise reduction structure switch according to claim 1, characterized in that: A central column is provided downwardly extending from the middle of the button, and a magnet mounting groove for fixing the magnet is provided at the bottom of the central column.

4. The noise reduction structure switch according to claim 3, characterized in that: The button is provided with an annular groove surrounding the outer side of the center column, and the upper part of the spring is sleeved in the annular groove.

5. The noise reduction structure switch according to claim 3, characterized in that: The outer wall of the button is slidably sleeved in the guide groove in the middle of the cover plate; the middle of the base is provided with a guide cavity arranged vertically, and the middle column is slidably sleeved in the guide cavity.

6. The noise reduction structure switch according to claim 1, characterized in that: The outer wall of the cover is buckled and connected to the corresponding buckle platform on the outer wall of the base through an L-shaped buckle.

7. The noise reduction structure switch according to claim 1, characterized in that: The four top corners of the bottom of the cover are respectively provided with positioning columns, and the top of the base is respectively provided with positioning holes corresponding to the positioning columns.

8. A keyboard, characterized in that: A switch comprising the switch according to any one of claims 1 to 7.

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