Elastic arm structure for reducing springback impact sound of key
By incorporating an elastic arm and rubber block into the button structure, noise reduction and stability improvement during button rebound are achieved, solving the problem of impact noise during button rebound.
Patent Information
- Application Number
- CN202520498522.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-20
AI Technical Summary
When the existing button rebounds, the stop block makes a hard impact with the housing, resulting in a large contact area and a loud impact sound, which affects the user experience.
Design an elastic arm structure, wherein one end of the elastic arm is fixedly connected to a rubber block, the rubber block engages with the inside of a slider, a button is connected to the top of the slider, the slider slides inside the housing, the elastic arm has a hemispherical rubber pad that makes point-to-surface contact with the inner side wall of the housing to reduce noise; the rubber block is tilted to stabilize the engagement, and the elastic arm drives the rubber block to hook the slider to prevent it from detaching.
Noise is reduced through point-to-surface contact, stability is increased by the tilted design of the rubber block, and the elastic arm structure effectively reduces the impact sound when the button rebounds, thus improving the stability of use.
Smart Images
Figure CN223927265U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to key switch technical field especially relates to a kind of elastic arm structure for reducing key rebound impact sound. BACKGROUND
[0002] With the development of the times, electrical switch products occupy more and more important position, and people's requirement to vehicle noise is also higher and higher, hope that the noise of electrical product is smaller and smaller, which leads to the structure of reducing noise needs to be considered when designing electrical switch product.
[0003] However, when the key rebounds, the stop block and the shell collide (as shown in the attached Figure 5 Figure), the contact mode is the contact between surfaces, the contact area is large, and the stop block is generally made of hard plastic, which causes the impact sound to be loud, affecting people's use.
[0004] Therefore, it is necessary to provide a new elastic arm structure for reducing key rebound impact sound to solve the above problems. UTILITY MODEL CONTENT
[0005] The technical problem solved by the utility model is to provide an elastic arm structure for reducing key rebound impact sound.
[0006] To solve the above technical problems, the elastic arm structure for reducing key rebound impact sound provided by the utility model comprises: an elastic arm, one end of the elastic arm is fixedly connected with a rubber block, the rubber block is clamped in the inside of a sliding block, the top end of the sliding block is fixedly connected with a key, the key and the sliding block are slidingly connected in the inside of a shell, the bottom end of the shell is installed with a base, a fixed plate is installed between the base and the shell, an elastic pad is installed between the fixed plate and the sliding block, the inside of the bottom end of the sliding block is provided with a plurality of sliding grooves, the inside of the sliding groove is clamped with the rubber block, one end of the elastic arm is installed with a rubber pad with a hemispherical top end, and the rubber pad abuts against the inner side wall of the shell.
[0007] Preferably, a PCB board is installed between the fixed plate and the base.
[0008] Preferably, the inside of the bottom end of the elastic pad is provided with a groove, the elastic pad and the conductive particles are integrally formed by injection molding, the inside of the elastic pad is clamped with the conductive particles, the conductive particles are located in the inside of the groove, and the conductive particles abut against and are electrically connected with the PCB board.
[0009] Preferably, one side of the rubber block is inclined, and the elastic arm is connected at the side.
[0010] Preferably, a side wall rib is installed on the surface of the elastic arm, the side wall is inclined to slide the inside of the sliding block.
[0011] Compared with the related art, the elastic arm structure for reducing the rebound impact sound of the key has the following beneficial effects:
[0012] The elastic arm structure for reducing the rebound impact sound of the key has the following beneficial effects: When the key is pressed downward, the key drives the slider to move downward in the inside of the shell, and the slider extrudes the elastic pad to deform the elastic pad; when the key is released, the elastic pad restores to the original state to push the slider and the key to reset upward, the slider drives the elastic arm and the rubber pad with a hemispherical top to move upward, the rubber pad with a hemispherical top contacts with the inner side wall of the shell in a point-face contact mode to reduce the noise of the contact; and with the upward movement of the slider, the rubber pad and the elastic arm are bent and deformed downward to further reduce the noise when the rubber block contacts with the shell; the device only needs to increase the elastic arm structure on the slider to reduce the noise, and is also applicable to the PUSH switch; one end of the elastic arm is provided with the rubber block, the height of the rubber block is greater than the height of the elastic arm, the rubber block is stably clamped in the inside of the slider to avoid the elastic arm from being easily separated from the inside of the slider; and one side of the rubber block is inclined, when the elastic arm is bent and deformed downward, the elastic arm extrudes the inside of the slider through the inclined side of the rubber block, the rubber block hooks the inside of the slider like a hook to avoid the elastic arm from sliding out and increase the stability of the elastic arm in use. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 The structure schematic view of a preferred embodiment of the elastic arm structure for reducing the rebound impact sound of the key is provided;
[0014] Figure 2 The structure schematic view of a preferred embodiment of the elastic arm structure for reducing the rebound impact sound of the key is provided; Figure 1 The structure schematic view of a preferred embodiment of the elastic arm structure for reducing the rebound impact sound of the key is provided;
[0015] Figure 3 The structure schematic view of a preferred embodiment of the elastic arm structure for reducing the rebound impact sound of the key is provided; Figure 2 The structure schematic view of a preferred embodiment of the elastic arm structure for reducing the rebound impact sound of the key is provided;
[0016] Figure 4 The structure schematic view of a preferred embodiment of the elastic arm structure for reducing the rebound impact sound of the key is provided; Figure 1 The structure schematic view of a preferred embodiment of the elastic arm structure for reducing the rebound impact sound of the key is provided;
[0017] Figure 5 The structure schematic view of a preferred embodiment of the elastic arm structure for reducing the rebound impact sound of the key is provided.
[0018] Marked number in the drawing: 1, base, 2, shell, 3, key, 4, slider, 5, PCB board, 6, fixed plate, 7, conductive particle, 8, groove, 9, elastic pad, 10, elastic arm, 11, rubber pad, 12, rib, 13, rubber block, 14, sliding groove. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] Please see Figures 1 to 4 , Figure 1 A schematic diagram of a preferred embodiment of the elastic arm structure for reducing the impact sound of button rebound provided by this utility model; Figure 2 for Figure 1 The diagram shows an enlarged view of the structure at point A. Figure 3 for Figure 2 The diagram shows an enlarged view of the structure at point B. Figure 4 for Figure 1The slider structure schematic diagram is shown. The elastic arm structure for reducing the rebound impact sound of the button includes: an elastic arm 10, one end of the elastic arm 10 is fixedly connected with a rubber block 13, the rubber block 13 is clamped in the inside of a slider 4; the top end of the slider 4 is fixedly connected with a button 3, the button 3 and the slider 4 are slidingly connected with the inside of a shell 2; the bottom end of the shell 2 is installed with a base 1, a fixed plate 6 is installed between the shell 2 and the base 1, an elastic pad 9 is installed between the fixed plate 6 and the slider 4; the bottom end of the slider 4 is internally provided with a plurality of sliding grooves 14, the inside of the sliding grooves 14 is clamped with the rubber block 13, one side of the rubber block 13 is obliquely arranged, and the elastic arm 10 is connected at the side; one end of the elastic arm 10 is installed with a rubber pad 11 with a hemispherical top end, and the rubber pad 11 abuts against the inner side wall of the shell 2. In the use process, the button 3 is pressed downward, the button 3 drives the slider 4 to move downward in the inside of the shell 2, the slider 4 presses the elastic pad 9, and the elastic pad 9 is deformed; when the button 3 is released, the elastic pad 9 returns to the original state, the elastic pad 9 pushes the slider 4 and the button 3 to reset upward, the slider 4 drives the elastic arm 10 and the rubber pad 11 with a hemispherical top end to move upward, the hemispherical rubber pad 11 contacts the inner side wall of the shell 2 in the form of point-face contact, reducing the noise of the contact between the two; and as the slider 4 moves upward, the rubber pad 11 and the elastic arm 10 are bent and deformed downward, thereby further reducing the noise when the rubber block 11 contacts the shell 2; the device only needs to increase the elastic arm structure on the slider 4 to reduce the noise, and is suitable for PUSH type switches; one end of the elastic arm 10 is installed with a rubber block 13, the height of the rubber block 13 is greater than the height of the elastic arm 10, so that the rubber block 13 is stably clamped in the inside of the slider 4, avoiding the elastic arm 10 from being easily separated from the inside of the slider 4; and one side of the rubber block 13 is obliquely arranged, when the elastic arm 10 is bent and deformed downward, the elastic arm 10 drives the oblique side of the rubber block 13 to press the inside of the slider 4, the rubber block 13 hooks the inside of the slider 4 like a hook, avoiding the elastic arm 10 from sliding out, and increasing the stability of the elastic arm 10 in the use process.
[0021] The PCB board 5 is installed between the fixed plate 6 and the base 1; the bottom end of the elastic pad 9 is internally provided with a groove 8, the elastic pad 9 is integrally formed with conductive particles 7 by injection molding, the conductive particles 7 are located in the interior of the groove 8, the conductive particles 7 abut and electrically connect the PCB board 5, the conductive particles 7 are made of nickel particles or carbon particles, have good conductivity, and the PCB board 5 and the conductive particles 7 are in communication with a circuit controlled by a key switch, when the switch is used, the key 3 drives the slider 4 to move downward in the interior of the shell 2, the slider extrudes the elastic pad 9, the elastic pad 9 is deformed and moves downward, drives the conductive particles 7 to abut the surface of the PCB board 5, current flows in the conductive particles 7 and the PCB board 5, thereby realizing the communication of the internal circuit of the switch; after the key 3 is released, the elastic pad 4 resets, drives the conductive particles 7 to move and separate from the PCB board 5, the conductive particles 7 enter the interior of the groove 8, and the circuit between the conductive particles 7 and the PCB board 5 is disconnected.
[0022] The elastic arm 10 is provided with a side wall rib 12 on the surface mounting side, the side wall is inclined to arrange the rib 12 to be slidably connected to the interior of the slider 4, the rib 12 increases the friction of the elastic arm 10 in the interior of the slider 4, and increases the stability of the elastic arm 10 in the interior of the slider 4.
[0023] The above only describes the embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation obtained by using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.
Claims
1. A resilient arm structure for reducing the rebounding impact sound of a key, characterized by, Include: The elastic arm (10) is fixedly connected with a rubber block (13) at one end, and the rubber block (13) is clamped in the inside of the sliding block (4); the top end of the sliding block (4) is fixedly connected with a button (3), and the button (3) and the sliding block (4) are slidingly connected in the inside of the shell (2); the bottom end of the shell (2) is mounted with a base (1), and a fixed plate (6) is mounted between the base (1) and the shell (2); an elastic pad (9) is mounted between the fixed plate (6) and the sliding block (4); A plurality of sliding grooves (14) are arranged in the inside of the bottom end of the sliding block (4), and the rubber block (13) is clamped in the inside of the sliding groove (14); one end of the elastic arm (10) is mounted with a rubber pad (11) with a hemispherical top end, and the rubber pad (11) abuts against the inner side wall of the shell (2).
2. The elastic arm structure for reducing a key bounce impact sound according to claim 1, wherein The fixed plate (6) and the base (1) are mounted with a PCB board (5).
3. The elastic arm structure for reducing the key bounce impact sound according to claim 2, wherein A recess (8) is arranged in the inside of the bottom end of the elastic pad (9), the elastic pad (9) and a conductive particle (7) are integrally formed by injection molding, the conductive particle (7) is located in the inside of the recess (8), and the conductive particle (7) abuts against and is electrically connected with the PCB board (5).
4. The elastic arm structure for reducing the key bounce impact sound according to claim 1, wherein The rubber block (13) is arranged to be inclined on one side, and the elastic arm (10) is connected to the side.
5. The elastic arm structure for reducing the key bounce impact sound according to claim 1, wherein The elastic arm (10) is mounted with a side wall rib (12) on the surface, and the side wall is arranged to be inclined to slide the rib (12) in the inside of the sliding block (4).