Multi-layer silencing automobile brake pad

Abstract

The utility model discloses a multi-layer silencing automobile brake pad, and belongs to the field of automobile accessories. Comprising a back plate and a friction block, the friction block is assembled on one face of the back plate, the back plate is sleeved with a silencing shell sleeve, and the silencing shell sleeve is provided with an opening end distributed towards the friction block; a noise reduction layer is arranged on the face, facing the friction block, of the back plate, a sound guide hole is formed in the friction block and penetrates through the friction block in the thickness direction of the friction block, a heat insulation plate and a bonding layer are arranged between the friction block and the noise reduction layer, and the heat insulation plate is located on the side, close to the friction block, of the bonding layer. The multi-layer noise reduction automobile brake pad has the beneficial effect that the multi-layer noise reduction automobile brake pad with good noise reduction performance is provided.

Description

Technical Field

[0001] The present application relates to the field of automobile accessories, and in particular to a multi-layered noise-reducing automobile brake pad. Background Art

[0002] Automobile brake pads are an important component in the automobile braking system. Their main function is to cooperate with the brake disc or brake drum to generate braking torque through friction to slow down or stop the vehicle. Brake pads are generally composed of three parts: steel plate, thermal insulation layer, adhesive insulation layer and friction block.

[0003] During city driving, due to frequent braking, the friction between the brake pads and the brake discs will generate a lot of noise. This noise will not only affect the driver's mood and concentration, but may also have a negative impact on the passengers' riding experience. By providing a sound-absorbing layer, this noise can be effectively reduced, thereby improving driving comfort and quietness. However, the current traditional brake pads only have a piece of cloth or other paper material between the steel plate and the friction block for sound absorption, and the sound absorption effect is average. For this reason, the present application proposes a multi-layer sound-absorbing automobile brake pad. Utility Model Content

[0004] The content of this application is used to briefly introduce concepts that will be described in detail in the detailed description section below. The content of this application is not intended to identify key features or essential features of the technical solution for which protection is sought, nor is it intended to limit the scope of the technical solution for which protection is sought.

[0005] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a multi-layer silencer automobile brake pad, including a backing plate and a friction block, wherein the friction block is assembled on one side of the backing plate, and a silencer shell is provided on the backing plate, and the silencer shell has an open end distributed toward the friction block; a silencer layer is provided on the side of the backing plate facing the friction block, and a sound guide hole is opened on the friction block, and the sound guide hole penetrates the friction block along the thickness direction of the friction block.

[0006] Furthermore, a heat insulation plate and a bonding layer are provided between the friction block and the sound-absorbing layer, and the heat insulation plate is located on a side of the bonding layer close to the friction block.

[0007] Furthermore, a positioning piece is provided on the side of the back plate facing the friction block, and an adapting hole capable of allowing the positioning piece to pass through is provided on the heat insulation plate and the bonding layer.

[0008] Furthermore, the positioning member is a tubular structure, and the positioning member is aligned with the sound guide hole on the friction block.

[0009] Furthermore, a plurality of sound-dissipating notches are formed on the side wall of the positioning member facing one end of the back plate.

[0010] Furthermore, a functional groove is provided in the middle of the friction block away from the back plate, and the functional groove runs through the side wall of the friction block.

[0011] Furthermore, a communication groove is provided on a side of the friction block away from the back plate, and two ends of the communication groove are connected to the functional groove and the sound guide hole.

[0012] Furthermore, the back plate is made of steel plate, the friction block is made of one or more of resin, powder metallurgy, and ceramics, the heat insulation plate is made of one of ceramics and glass fiber, and the sound-absorbing layer and the sound-absorbing shell are made of one or more of rubber, ceramics, and paper.

[0013] The beneficial effect of the present application is that it provides a multi-layered noise-reducing automobile brake pad with good noise-reduction performance.

[0014] By placing a ceramic or fiberglass heat shield between the friction pad and the backing plate, the heat generated during braking can be reduced from conducting heat to other parts of the brake pad, protecting the internal structure of the brake pad from high-temperature damage and extending the service life of the brake pad. The functional grooves and connecting grooves in the friction pad can increase air circulation on the friction pad surface, improving the heat dissipation performance of the brake pad.

[0015] By means of the silencer shell sleeve arranged on the back plate and the silencer layer arranged on the side of the back plate facing the friction block, and the silencer shell sleeve and the silencer layer being made of one or more materials selected from rubber, ceramics and paper, the noise generated during braking can be greatly reduced, driving comfort can be improved, and the interference of braking noise on the driver and passengers can be reduced. In addition, the sound guide holes opened on the friction block can transmit part of the noise to the back plate through the positioning parts of the tubular structure, and disperse the noise on the sound insulation layer on the surface of the back plate under the guidance of the sound dissipating grooves on the positioning parts, thereby further reducing the noise generated during braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of this application and make other features, purposes and advantages of this application more apparent. The drawings and descriptions of the exemplary embodiments of this application are used to explain this application and do not constitute an improper limitation on this application.

[0017] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the elements and components are not necessarily drawn to scale.

[0018] In the attached figure:

[0019] Figure 1 This is a schematic diagram of the overall structure of this application;

[0020] Figure 2This is a schematic diagram of the disassembled structure of this application;

[0021] Figure 3 This is a schematic diagram of the structure of the friction block of this application;

[0022] Figure 4 This is a schematic diagram of the structure of the backplane of this application;

[0023] Figure 5 This is a structural diagram of the positioning component of this application.

[0024] Reference numerals:

[0025] 1. Back plate; 2. Friction block; 3. Heat insulation board; 4. Adhesive layer; 5. Functional slot; 6. Sound guide hole; 7. Silencer shell; 8. Silencer layer; 9. Positioning piece; 10. Adapter hole; 11. Connecting slot; 12. Sound dissipation slot. DETAILED DESCRIPTION

[0026] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0027] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0028] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0029] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0030] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0031] Reference Figure 1-Figure 5As shown, a multi-layered, noise-reducing automotive brake pad comprises a backing plate 1 and a friction block 2. The friction block 2 is mounted on one side of the backing plate 1. A noise-reducing shell 7 is mounted on the backing plate 1. The noise-reducing shell 7 has an open end facing the friction block 2. A noise-reducing layer 8 is provided on the side of the backing plate 1 facing the friction block 2. A sound-guiding hole 6 is provided in the friction block 2, extending through the thickness of the friction block 2. The backing plate 1 is made of steel, the friction block 2 is made of one or more of resin, powder metallurgy, and ceramic, and the noise-reducing layer 8 and the noise-reducing shell 7 are made of one or more of rubber, ceramic, and paper. The noise-reducing shell 7 mounted on the backing plate 1 and the noise-reducing layer 8 on the side of the backing plate 1 facing the friction block 2, along with the noise-reducing shell 7 and the noise-reducing layer 8 being made of one or more of rubber, ceramic, and paper, can significantly reduce noise generated during braking, improve driving comfort, and reduce the disturbance caused by braking noise to the driver and passengers.

[0032] Furthermore, a heat shield 3 and an adhesive layer 4 are disposed between the friction pad 2 and the sound-absorbing layer 8. The heat shield 3 is located on the side of the adhesive layer 4 closest to the friction pad 2. The adhesive layer 4 ensures a secure connection between the backing plate 1 and the friction pad 2, preventing the friction pad 2 from falling off or loosening during braking, thereby improving the overall strength and durability of the brake pad. The heat shield 3 is made of either ceramic or fiberglass, which reduces the heat generated during braking from transferring to other parts of the brake pad, protecting the internal structure of the brake pad from damage due to high temperatures and extending the brake pad's service life.

[0033] In a further embodiment, a positioning piece 9 is provided on the side of the back plate 1 facing the friction block 2, and an adapter hole 10 for accommodating the positioning piece 9 to pass through is provided on the heat insulation plate 3 and the bonding layer 4. The positioning piece 9 is a tubular structure, and the positioning piece 9 is aligned with the sound guide hole 6 on the friction block 2. A plurality of sound-diffusing grooves 12 are provided on the side wall of the positioning piece 9 facing the end of the back plate 1. The sound guide holes 6 opened on the friction block 2 can conduct part of the noise to the back plate 1 through the positioning piece 9 with a tubular structure, and the noise is dispersed on the sound-diffusing layer 8 on the surface of the back plate 1 under the guidance of the sound-diffusing grooves 12 on the positioning piece 9, thereby further reducing the noise generated during braking.

[0034] In a further embodiment, a functional groove 5 is provided in the middle of the side of the friction block 2 away from the back plate 1, and the functional groove 5 runs through the side wall of the friction block 2. During the braking process, a large amount of heat will be generated between the friction block 2 and the brake disc. If this heat is not dissipated in time, it will affect the braking effect and the life of the brake pad. The design of the functional groove 5 allows air to flow through the friction block 2 more effectively, taking away the heat, thereby reducing the temperature of the brake pad and improving the braking performance and durability. At the same time, the setting of the functional groove 5 is conducive to the discharge of powder debris generated by the friction between the friction block 2 and the brake disc, and changes the natural frequency of the brake pad, which is conducive to eliminating noise during braking.

[0035] Furthermore, a connecting groove 11 is provided on a side of the friction block 2 away from the back plate 1 , and both ends of the connecting groove 11 are connected to the functional groove 5 and the sound guide hole 6 , thereby improving the heat dissipation effect and the sound-absorbing performance.

[0036] During use, a ceramic or fiberglass heat shield 3 is provided between the friction block 2 and the back plate 1 to reduce the heat transfer from the brake pad to other parts of the brake pad during braking, protecting the internal structure of the brake pad from damage by high temperatures and extending the service life of the brake pad. The functional grooves 5 and connecting grooves 11 provided on the friction block 2 increase air circulation on the surface of the friction block 2, improving the heat dissipation performance of the brake pad. The silencer housing 7 provided on the back plate 1 and the silencer layer 8 provided on the side of the back plate 1 facing the friction block 2, along with the silencer housing 7 and silencer layer 8 being made of one or more materials selected from rubber, ceramic, and paper, significantly reduce the noise generated during braking, improving driving comfort and reducing the disturbance of braking noise to the driver and passengers. Furthermore, the sound guide holes 6 provided on the friction block 2 can conduct some of the noise to the back plate 1 through the tubular positioning member 9. The noise is then dispersed through the sound-dissipating notches 12 on the positioning member 9 onto the silencer layer 8 on the surface of the back plate 1, further reducing the noise generated during braking.

[0037] The above description is only an illustration of some preferred embodiments of the present disclosure and the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A multi-layered, noise-reducing automobile brake pad, comprising a back plate (1) and a friction block (2), characterized in that: The friction block (2) is mounted on one side of a back plate (1), and a silencer shell (7) is sleeved on the back plate (1), wherein the silencer shell (7) has an open end facing the friction block (2); A sound-absorbing layer (8) is provided on the side of the back plate (1) facing the friction block (2), and a sound guide hole (6) is provided on the friction block (2), and the sound guide hole (6) penetrates the friction block (2) along the thickness direction of the friction block (2).

2. The multi-layered noise-absorbing automobile brake pad according to claim 1, characterized in that: A heat insulation board (3) and a bonding layer (4) are provided between the friction block (2) and the sound-absorbing layer (8), and the heat insulation board (3) is located on a side of the bonding layer (4) close to the friction block (2).

3. The multi-layered noise-absorbing automobile brake pad according to claim 2, characterized in that: A positioning piece (9) is provided on the side of the back plate (1) facing the friction block (2), and an adapting hole (10) capable of allowing the positioning piece (9) to pass through is provided on the heat insulation plate (3) and the bonding layer (4).

4. The multi-layered noise-absorbing automobile brake pad according to claim 3, characterized in that: The positioning member (9) is a tubular structure, and the positioning member (9) is aligned with the sound guide hole (6) on the friction block (2).

5. The multi-layered noise-absorbing automobile brake pad according to claim 4, characterized in that: The positioning member (9) has a plurality of sound-dispersing notches (12) on its side wall facing one end of the back panel (1).

6. The multi-layered noise-absorbing automobile brake pad according to claim 1, characterized in that: A functional groove (5) is provided in the middle of the friction block (2) away from the back plate (1), and the functional groove (5) runs through the side wall of the friction block (2).

7. The multi-layered noise-absorbing automobile brake pad according to claim 6, characterized in that: A communication groove (11) is provided on a side of the friction block (2) away from the back plate (1), and both ends of the communication groove (11) are connected to the functional groove (5) and the sound guide hole (6).

8. The multi-layered noise-absorbing automobile brake pad according to claim 2, characterized in that: The back plate (1) is made of a steel plate, the friction block (2) is made of one or more of resin, powder metallurgy, and ceramics, the heat insulation plate (3) is made of one of ceramics and glass fiber, and the sound-absorbing layer (8) and the sound-absorbing shell (7) are made of one or more of rubber, ceramics, and paper.

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