Low-noise automobile brake pad

Abstract

The low-noise automobile brake pad comprises an installation assembly and a friction plate, the installation assembly comprises a limiting groove, a first clamping block, a second clamping block, a pull ring, a movable rod and a reset spring, and the limiting groove is formed in the contact face of the installation assembly and a fixing plate and matched with a limiting block in size; the first clamping block and the second clamping block are used for preventing the friction plate from falling off, the second clamping block is fixedly connected with the moving rod, the moving rod penetrates through the through hole and moves in the axial direction of the through hole, the part, penetrating out of the through hole and away from the second clamping block, of the moving rod is fixedly connected with a pull ring, and a reset spring is arranged on the pull rod between the pull ring and the installation assembly. The pull ring is pulled, the moving rod moves in the axial direction of the via hole, the reset spring is stretched, the second clamping block and the moving rod move synchronously, and therefore position limitation of the second clamping block on the friction plate is eliminated, and the friction plate is taken out of the mounting assembly. Through the components, the brake pad can be replaced more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of brake pads, and specifically relates to a low-noise automotive brake pad. Background Art

[0002] The brake pad is a key component in the automotive braking system. When the vehicle brakes, it contacts the brake disc and generates resistance through friction to decelerate or stop the vehicle. However, traditional brake pads may produce noise during braking. This noise is mainly caused by vibrations due to the unevenness or mismatch between the brake pad and the brake disc. Such vibrations not only make the driver and passengers feel uncomfortable and reduce driving comfort, especially during long trips or high-speed driving, but also may disrupt the surrounding environment, causing unnecessary noise pollution to cities and communities and leading to public complaints and environmental protection issues. Therefore, it is necessary to improve the existing brake pads to reduce noise and enhance their performance.

[0003] Chinese Patent (CN221237084U) discloses a low-noise automotive brake pad. The working principle of this automotive brake pad is to sequentially arrange a sound-absorbing layer and a sound-insulating layer at the rear end of the friction plate, and fixedly install a fixing plate at the rear end of the sound-insulating layer to reduce the transmission of vibrations and noise. The front end of the friction plate is provided with evenly arranged grooves, which help to reduce the resonance and vibration of the friction plate during braking, thereby reducing the noise level. In addition, a disassembly and assembly mechanism is provided at the intersection of the installation component and the fixing plate, including a slider, a chute, a limiting groove, a fixing block, a threaded hole, a limiting hole, and a screw. The cooperation of these components makes the disassembly and assembly of the friction plate convenient and fast. When the friction plate needs to be replaced, only need to loosen the screw and move the slider along the chute to disassemble the friction plate. After replacing the new friction plate, the installation is completed by moving the slider and tightening the screw. This design not only improves driving comfort, reduces noise pollution to the environment, but also may have better performance and wear resistance characteristics due to the improvement of the friction plate material, extends the service life, and reduces the replacement and maintenance costs.

[0004] However, in the above-mentioned prior art, a through-thread mechanism is adopted in the friction plate part, resulting in the overall structure of the friction plate being thinned, the internal stress of the friction plate increasing during use, and additional tools being required during the disassembly and assembly process, resulting in certain trouble in the installation process. In order to reduce the installation process and increase the strength of the friction plate, further optimization is required. Summary of the Utility Model

[0005] To address the above problems, a low-noise automotive brake pad is provided, which includes an installation component and a friction plate. One end of the friction plate is sequentially connected with a sound-absorbing layer, a sound-insulating layer, and a fixing plate from near to far. A limiting block is provided on the side of the fixing plate away from the friction plate. The installation component includes a limiting groove, a first clamping block, a second clamping block, a pull ring, a moving rod, and a return spring. The limiting groove is opened on the contact surface between the installation component and the fixing plate and matches the size of the limiting block. The first clamping block and the second clamping block are used to prevent the friction plate from falling off. The second clamping block is fixedly connected to the moving rod. The moving rod passes through a through-hole and moves along the axial direction of the through-hole. The part of the moving rod that passes through the through-hole and is away from the second clamping block is fixedly connected to the pull ring. A return spring is provided on the pull rod between the pull ring and the installation component. When the friction plate needs to be removed, the pull ring is pulled, the moving rod moves along the axial direction of the through-hole, the return spring is stretched, the second clamping block and the moving rod move synchronously, thereby canceling the position limitation of the second clamping block on the friction plate, and the friction plate is removed from the installation component.

[0006] Preferably, a plurality of through-holes are provided on the installation component and the fixing plate.

[0007] Preferably, the material of the friction plate is a carbon ceramic composite material.

[0008] Preferably, the material of the sound-absorbing layer is ceramic fiber.

[0009] Preferably, the material of the sound-insulating layer is a polyimide film.

[0010] Preferably, a plurality of grooves are provided at one end of the friction plate away from the installation component.

[0011] The beneficial effects of the present utility model compared with the prior art are as follows:

[0012] 1. The low-noise automotive brake pad of the present utility model is designed with a plurality of grooves at one end of the friction plate away from the installation component. These grooves form a special concave-convex structure, effectively reducing resonance and vibration during braking. This design directly reduces noise generation, while improving the stability and reliability of the braking system, providing a more comfortable and quiet driving experience for the driver.

[0013] 2. The installation component of the present utility model is designed with components such as a limiting groove, a clamping block, a pull ring, a moving rod, and a return spring, realizing the quick disassembly and assembly of the friction plate. This design simplifies the maintenance process, and the friction plate can be replaced without additional tools, greatly saving maintenance time and labor intensity. In addition, through the cooperation of the clamping block and the limiting groove, the positioning accuracy and stability of the friction plate during braking are ensured.

[0014] 3. A plurality of through holes are provided on the fixing plate of the present utility model. These through holes not only improve the heat dissipation performance of the brake pads, prevent the braking effect from being affected by overheating, but also interfere with and absorb sound waves through air circulation, further reducing noise. The design of the through holes also helps to reduce the contact pressure between the friction plate and the brake disc, reduce the vibration generated by uneven contact, thereby achieving a lower noise level in the entire braking system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional schematic diagram of a low-noise automotive brake pad.

[0016] Figure 2 is a low-noise automotive brake pad Figure 1 partial enlarged view at A in

[0017] Figure 3 is a three-dimensional schematic diagram of the fixing plate and the mounting assembly of a low-noise automotive brake pad.

[0018] Figure 4 is a low-noise automotive brake pad Figure 3 partial enlarged view at B in

[0019] Figure 5 is an exploded view of a low-noise automotive brake pad from the top perspective.

[0020] Figure 6 is an exploded view of a low-noise automotive brake pad from the bottom perspective.

[0021] The reference numerals in the figures are: 1, mounting assembly; 11, limiting groove; 12, first clamping block; 13, second clamping block; 14, through hole; 15, pull ring; 16, moving rod; 161, return spring; 2, fixing plate; 21, limiting block; 3, friction plate; 4, sound-absorbing layer; 5, sound-insulating layer; 6, through hole; 7, groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to further understand the features, technical means, and the specific purposes and functions achieved by the present utility model, the present utility model will be further described in detail below in conjunction with the drawings and the specific embodiments.

[0023] Refer to Figures 1 - 6:A low-noise automotive brake pad, comprising a mounting assembly 1 and a friction plate 3. One end of the friction plate 3 is sequentially connected with a sound-absorbing layer 4, a sound-insulating layer 5 and a fixing plate 2 from near to far. A limiting block 21 is arranged on the side of the fixing plate 2 away from the friction plate 3. The mounting assembly 1 includes a limiting groove 11, a first clamping block 12, a second clamping block 13, a pull ring 15, a moving rod 16 and a return spring 161. The limiting groove 11 is opened on the contact surface between the mounting assembly 1 and the fixing plate 2 and is matched with the limiting block 21 in size. The first clamping block 12 and the second clamping block 13 are used to prevent the friction plate 3 from falling off. The second clamping block 13 is fixedly connected with the moving rod 16. The moving rod 16 passes through the through hole 14 and moves along the axial direction of the through hole 14. The part of the moving rod 16 passing through the through hole 14 and away from the second clamping block 13 is fixedly connected with the pull ring 15. A return spring 161 is arranged on the pull rod between the pull ring 15 and the mounting assembly 1. When the friction plate 3 needs to be taken out, the pull ring 15 is pulled, the moving rod 16 moves along the axial direction of the through hole 14, the return spring 161 is stretched, the second clamping block 13 and the moving rod 16 move synchronously, so as to cancel the position limitation of the second clamping block 13 on the friction plate 3, and the friction plate 3 is taken out from the mounting assembly 1.

[0024] In the comparative document, the loading and unloading of the friction plate 3 involves a threaded structure and requires the use of additional tools during the operation. To further simplify the installation process, in the present utility model, the working principle of the low-noise automotive brake pads involves the coordinated operation of a series of components to achieve the rapid disassembly and installation of the friction plate 3. One end of the friction plate 3 is sequentially connected with a sound-absorbing layer 4, a sound-insulating layer 5, and a fixing plate 2. The function of these layers is to reduce the transmission of vibration and noise. A limiting block 21 is provided on the side of the fixing plate 2 away from the friction plate 3, and its size matches the limiting groove 11 on the mounting assembly 1 to ensure the stable position of the fixing plate 2. The mounting assembly 1 consists of a limiting groove 11, a first clamping block 12, a second clamping block 13, a pull ring 15, a moving rod 16, and a return spring 161. The limiting groove 11 is opened on the surface of the mounting assembly 1 in contact with the fixing plate 2 and is used in cooperation with the limiting block 21 to prevent it from shifting during braking. The first clamping block 12 and the second clamping block 13 are used to fix the friction plate 3 and prevent the friction plate 3 from falling off. The second clamping block 13 is fixedly connected with the moving rod 16, and the moving rod 16 passes through the through hole 14 and can move along the axial direction of the through hole 14. A pull ring 15 is fixedly connected to the end of the moving rod 16 away from the second clamping block 13, and the pull ring 15 is connected to a pull rod on the mounting assembly 1, and a return spring 161 is provided on the pull rod. When it is necessary to remove the friction plate 3, the operator pulls the pull ring 15, which causes the moving rod 16 to move along the axial direction of the through hole 14, and the return spring 161 is stretched accordingly. As the moving rod 16 moves, the second clamping block 13 and the moving rod 16 that moves synchronously with it move together, thus canceling the position limitation of the second clamping block 13 on the friction plate 3. In this way, the friction plate 3 can be removed from the mounting assembly 1, facilitating replacement or maintenance. The entire mechanism is designed to be both simple and efficient, making the disassembly and installation process of the friction plate 3 fast and convenient.

[0025] Referring to Figures 1 - 6 : A plurality of through holes 6 are provided on the mounting assembly 1 and the fixing plate 2.

[0026] A plurality of through holes 6 are provided on the mounting assembly 1 and the fixing plate 2. The design of these through holes 6 is to improve the heat dissipation performance of the brake pads and reduce noise. The through holes 6 allow air to circulate, helping to dissipate the heat generated by friction, preventing the brake pads from being affected by overheating and affecting the braking effect or causing heat attenuation. At the same time, when the air passes through the through holes 6, it can interfere with and absorb the sound waves generated by the friction plate 3, thereby reducing noise. In addition, the design of the through holes 6 helps to reduce the contact pressure between the friction plate 3 and the brake disc, reducing vibration and noise caused by uneven contact. The setting of these through holes 6 is part of the overall design of the brake pads, aiming to improve the braking performance and driving comfort, while reducing the noise impact on the environment.

[0027] Referring to Figure 5 : The material of the friction plate 3 is a carbon ceramic composite material.

[0028] The material of the friction plate 3 is a carbon ceramic composite material, which has excellent wear resistance, high temperature resistance and good friction coefficient stability. The carbon ceramic composite material is composed of carbon fibers and a ceramic matrix. The carbon fibers provide high strength and toughness, while the ceramic matrix provides high temperature resistance and corrosion resistance. During braking, the friction plate 3 made of this composite material can withstand high temperatures without significant wear or performance degradation, while maintaining a stable friction coefficient to ensure the reliability of the braking effect. Due to the high wear resistance of the carbon ceramic composite material, the service life of the friction plate 3 is extended, reducing the replacement frequency and maintenance costs. In addition, the low coefficient of thermal expansion of this material helps to reduce thermal stress, thereby reducing noise and vibration caused by temperature changes, achieving a lower noise braking effect and improving driving comfort.

[0029] Refer to Figure 5 : The material of the sound-absorbing layer 4 is ceramic fiber.

[0030] The material of the sound-absorbing layer 4 is ceramic fiber, which has excellent sound-absorbing performance due to its porous structure and lightweight characteristics. During braking, noise is generated when the friction plate 3 contacts the brake disc. The ceramic fiber sound-absorbing layer 4 can effectively absorb these sound waves caused by vibration, converting sound energy into heat energy, thereby reducing the transmission of noise. The high porosity and low density of ceramic fiber make it an ideal sound-absorbing material. It can reduce the air vibration generated by the friction plate 3 during braking, thereby reducing the noise level. In addition, the high temperature resistance of ceramic fiber also enables it to remain stable in a high temperature environment, helping to improve the overall performance of the brake pads. By fixedly installing the ceramic fiber sound-absorbing layer 4 at the rear end of the friction plate 3, the low-noise automotive brake pads of the present utility model improve driving comfort while reducing noise pollution to the environment.

[0031] Refer to Figure 5 : The material of the sound-insulating layer 5 is polyimide film.

[0032] The material of the sound insulation layer 5 is polyimide film, which is famous for its excellent heat resistance, mechanical properties and chemical corrosion resistance. The polyimide film is fixedly installed at the rear end of the friction plate 3, playing a role in isolating and reducing the transmission of noise. During braking, the vibration and noise generated by friction may be transmitted to other components of the vehicle through the friction plate 3, while the sound insulation layer 5 of the polyimide film can effectively block the transmission path of these vibrations and noises. Due to the high rigidity and damping characteristics of the polyimide film, it can reduce the vibration transmission between the brake pad and the brake caliper and other components, reduce the resonance phenomenon, and thus reduce the generation of noise. In addition, the heat resistance of the polyimide film ensures the stability of the material performance in a high-temperature braking environment, which helps to maintain the overall performance and durability of the brake pad. By adding the polyimide film sound insulation layer 5 to the structure of the friction plate 3, the low-noise automotive brake pad can improve driving comfort and reduce noise interference to the surrounding environment.

[0033] Refer to Figure 1 : Several grooves 7 are provided at one end of the friction plate 3 away from the mounting assembly 1.

[0034] By providing the grooves 7 on the friction plate 3, an uneven structure is presented on the friction plate 3 to reduce resonance and vibration, thereby reducing the noise level.

[0035] The above embodiments only represent one or several implementation manners of the present utility model, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the appended claims.

Claims

1. A low-noise automotive brake pad, comprising a mounting assembly (1) and a friction plate (3), characterized in that, One end of the friction plate (3) is successively connected with a sound-absorbing layer (4), a sound-insulating layer (5) and a fixing plate (2) from near to far. A limiting block (21) is arranged on the side of the fixing plate (2) away from the friction plate (3). The installation component (1) includes a limiting groove (11), a first clamping block (12), a second clamping block (13), a pull ring (15), a moving rod (16) and a return spring (161). The limiting groove (11) is opened on the contact surface between the installation component (1) and the fixing plate (2) and is matched with the limiting block (21) in size. The first clamping block (12) and the second clamping block (13) are used to prevent the friction plate (3) from falling off. The second clamping block (13) is fixedly connected with the moving rod (16). The moving rod (16) passes through the through hole (14) and moves along the axial direction of the through hole (14). A part of the moving rod (16) that passes through the through hole (14) and is away from the second clamping block (13) is fixedly connected with the pull ring (15). A return spring (161) is arranged on the pull rod between the pull ring (15) and the installation component (1). When the friction plate (3) needs to be taken out, the pull ring (15) is pulled, the moving rod (16) moves along the axial direction of the through hole (14), the return spring (161) is stretched, and the second clamping block (13) and the moving rod (16) move synchronously, so as to cancel the position limitation of the second clamping block (13) on the friction plate (3), and the friction plate (3) is taken out from the installation component (1).

2. The low-noise automotive brake pad according to claim 1, wherein, A plurality of through holes (6) are opened on the installation component (1) and the fixing plate (2).

3. A low-noise automotive brake pad according to claim 1, characterized in that The material of the friction plate (3) is a carbon ceramic composite material.

4. A low-noise automotive brake pad according to claim 1, characterized in that, The material of the sound-absorbing layer (4) is ceramic fiber.

5. A low-noise automotive brake pad according to claim 1, characterized in that, The material of the sound-insulating layer (5) is a polyimide film.

6. The low-noise automotive brake pad according to claim 1, wherein, A plurality of grooves (7) are arranged at one end of the friction plate (3) away from the installation component (1).

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