Multi-layer brake pad

Abstract

The utility model discloses a multilayer brake pad, which belongs to the technical field of brake pads, and comprises a back plate and a friction layer, the back plate is made of carbon fiber reinforced plastics, a plurality of notches are arranged on the back plate, the depth of the notches is not more than 1 / 5 of the thickness of the back plate, the friction layer is connected with the back plate through the notches, and the friction layer is arranged on the back plate. The surface, attached to the notch, of the friction layer is of a corrugated concave-convex structure; a noise reduction layer and a heat insulation layer are bonded to the face, away from the friction layer, of the back plate, heat dissipation grooves are evenly distributed in the back face of the heat insulation layer, and copper heat conduction pipes are embedded in the heat dissipation grooves. According to the brake pad, the carbon fiber reinforced plastic back plate and the friction layers which are connected through the notch corrugated concave-convex structures and are periodically arranged are adopted, so that the shearing force is effectively dispersed, and the structural stability of the brake pad is improved.

Description

Technical Field

[0001] This utility model belongs to the field of brake pad technology, specifically relating to a multi-layer brake pad. Background Technology

[0002] In modern transportation, brake pads are a critical safety component, and their performance directly affects braking effectiveness and driving safety. Traditional brake pads often experience problems such as decreased friction performance, inadequate heat dissipation, shear stress concentration, and cracking under prolonged or high-intensity use. These issues limit the lifespan and safety of brake pads. Therefore, developing a new type of multi-layer brake pad to improve friction resistance, heat dissipation, and crack resistance has become an urgent need for the industry. Summary of the Invention

[0003] To address the aforementioned problems, this utility model discloses a multi-layer brake pad, which uses a carbon fiber reinforced plastic backing plate and a periodically arranged friction layer connected by a grooved corrugated structure to effectively disperse shear force and improve the structural stability of the brake pad.

[0004] To achieve the above objectives, the specific technical solution of this application is as follows:

[0005] A multi-layer brake pad includes a backing plate and a friction layer. The backing plate is made of carbon fiber reinforced plastic and has several grooves. The depth of the grooves does not exceed 1 / 5 of the thickness of the backing plate. The friction layer is connected to the backing plate through the grooves. The contact surface between the friction layer and the grooves has a corrugated uneven structure. A sound-absorbing layer and a heat-insulating layer are bonded to the side of the backing plate away from the friction layer. The back of the heat-insulating layer has heat dissipation grooves evenly distributed, and copper heat-conducting pipes are embedded in the heat dissipation grooves.

[0006] Based on the above technical features, preferably, the back edge of the back plate is provided with a stress buffer groove.

[0007] Based on the above technical features, preferably, the slots are arranged periodically on the back plate, and the cross-section of the slots is an inverted trapezoid, so as to optimize stress distribution and enhance the structural strength of the brake pads.

[0008] Based on the above technical features, preferably, the heat insulation layer is composed of multiple layers of ceramic fiber or glass fiber material to provide excellent heat insulation effect and heat resistance.

[0009] Based on the above technical features, preferably, the surface of the friction layer is coated with a wear-resistant coating to extend the service life of the brake pads.

[0010] Based on the above technical features, preferably, the edges of the base plate and the friction layer are provided with chamfers or rounded corners to reduce stress concentration during installation and improve impact resistance.

[0011] Compared with the prior art, the beneficial effects of this application are as follows:

[0012] This application uses a carbon fiber reinforced plastic backing plate and a periodically arranged friction layer connected by a grooved corrugated structure to effectively disperse shear force and improve the structural stability of the brake pads.

[0013] The design of the heat insulation layer and heat dissipation grooves enables rapid heat dissipation and prevents the braking performance from deteriorating due to high temperature;

[0014] Rounded corner design disperses stress through a smooth transition, reducing stress peaks in localized areas and thus lowering the risk of crack initiation and propagation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a multi-layer brake pad according to the present invention;

[0016] Figure 2 This is a top view of the structure of this utility model;

[0017] List of identifiers in attached diagrams:

[0018] 1. Backplate; 2. Friction layer; 3. Groove; 4. Sound-absorbing layer; 5. Heat insulation layer; 6. Stress buffer groove; 7. Heat dissipation groove; 8. Copper heat pipe. Detailed Implementation

[0019] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0020] It should be noted that the terms "upper," "lower," "left," "right," "front," and "rear" used in the following description refer to the directions shown in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. Furthermore, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] like Figure 1As shown, a multi-layer brake pad includes a backing plate 1 and a friction layer 2. The backing plate 1 is made of carbon fiber reinforced plastic and has several slots 3. The depth of the slots 3 does not exceed 1 / 5 of the thickness of the backing plate 1. The friction layer 2 is connected to the backing plate 1 through the slots 3. The contact surface between the friction layer 2 and the slots 3 has a corrugated uneven structure. A sound-absorbing layer 4 and a heat-insulating layer 5 are bonded to the side of the backing plate 1 away from the friction layer 2. The back of the heat-insulating layer 5 has heat dissipation grooves 7 evenly distributed on its back side, and copper heat-conducting pipes are embedded in the heat dissipation grooves 7.

[0022] Based on the above technical features, preferably, the back edge of the back plate 1 is provided with a stress buffer groove 6.

[0023] Based on the above technical features, preferably, the slots 3 are arranged periodically on the back plate, and the cross-section of the slots 3 is an inverted trapezoid, so as to optimize stress distribution and enhance the structural strength of the brake pads.

[0024] Based on the above technical features, preferably, the heat insulation layer 5 is composed of multiple layers of ceramic fiber or glass fiber material to provide excellent heat insulation effect and heat resistance.

[0025] Based on the above technical features, preferably, the surface of the friction layer 2 is coated with a wear-resistant coating, which is composed of ceramic or metal oxide, to extend the service life of the brake pads.

[0026] Based on the above technical features, preferably, the edges of the base plate 1 and the friction layer 2 are provided with chamfers or rounded corners to reduce stress concentration during installation and improve the impact resistance of the brake pads.

[0027] In summary, during braking, the friction layer contacts the brake disc, generating friction. The heat generated by this friction is rapidly conducted through the heat dissipation grooves and copper heat pipes on the back of the insulation layer, achieving timely heat dissipation. The periodically arranged grooves and stress buffer grooves disperse shear force, preventing shear force concentration, and the stress buffer grooves reduce stress concentration, preventing brake pad cracking. The sound-absorbing layer reduces noise generated during braking, improving driving comfort.

[0028] It should be noted that the accompanying drawings merely illustrate the technical concept of the present invention and should not be used to limit the scope of protection of the present invention. For those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and all such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A multi-layer brake pad, characterized by: The back plate is carbon fiber reinforced plastic, and a plurality of notches are arranged on the back plate, the depth of the notches is not more than 1 / 5 of the thickness of the back plate, the friction layer is connected with the back plate through the notches, and the fitting surface of the friction layer and the notches is a corrugated concave-convex structure; the side, away from the friction layer, of the back plate is bonded with a sound-absorbing layer and a heat insulation layer, the back of the heat insulation layer is uniformly distributed with heat dissipation grooves, and copper heat conduction pipes are embedded in the heat dissipation grooves.

2. A multi-layer brake pad according to claim 1, wherein: The back edge of the back plate is provided with a stress buffer groove.

3. The multi-layer brake pad of claim 1, wherein: The notches are periodically arranged on the back plate, and the cross section of the notches is inverted trapezoidal.

4. The multi-layer brake pad of claim 1, wherein: The heat insulation layer is composed of a plurality of layers of ceramic fiber or glass fiber materials.

5. The multi-layer brake pad of claim 1, wherein: The surface of the friction layer is coated with a wear-resistant coating.

6. The multi-layer brake pad of claim 1, wherein: The edges of the back plate and the friction layer are provided with a chamfer or a round corner design.

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