Brake pad with excellent NVH (Noise Vibration and Harshness) performance

Abstract

The utility model belongs to the technical field of brake equipment, and particularly relates to a brake pad with excellent NVH (Noise Vibration and Harshness) performance, which comprises a bottom plate and a friction material fixed on the bottom plate, and induction line clamping grooves are symmetrically arranged on two sides of a positioning bulge of the bottom plate; mounting holes are symmetrically formed in the two sides of the induction line clamping groove; clamping jaws are arranged around the mounting hole; a first low-frequency vibration noise reduction area is arranged in the middle of the friction material; a second low-frequency vibration noise reduction area and a third low-frequency vibration noise reduction area are arranged on the two sides of the friction material in the action direction of the brake pad. The first low-frequency vibration noise reduction area, the second low-frequency vibration noise reduction area and the third low-frequency vibration noise reduction area are arranged on the friction material layer, friction stress generated on the friction material of the brake pad during braking of an automobile is decomposed into multiple directions through the stress starting direction, the stress ending direction and the stress concentration direction, and therefore the vibration frequency during braking is greatly reduced, and the service life of the brake pad is prolonged. Noise generated during braking of an automobile is effectively reduced, and the driving comfort of the automobile is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of brake equipment, and in particular relates to a brake pad with excellent NVH performance. Background Art

[0002] Brake pads are components that provide braking for vehicles. As people pursue excellent vehicle performance and focus on driving comfort, brake pads with better performance have become an important indicator for vehicle manufacturers.

[0003] At present, the brake pads used in most vehicles have structural design defects, the groove method of the friction material layer and the overall structure style are not suitable. When the driver brakes the car, it will produce large vibrations and high noise. Therefore, a brake pad with excellent NVH performance has become an important component in the braking system. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a brake pad with excellent NVH performance.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A brake pad with excellent NVH performance, comprising a base plate and a friction material layer fixed on the base plate, wherein the base plate is provided with a positioning protrusion, a sensing line slot and a claw;

[0007] The positioning protrusion is located in the middle of the bottom plate; the positioning protrusion is symmetrically provided with induction line slots on both sides, and the induction line slots are used to install sensors to detect the wear of the brake pads and feedback data; the induction line slot is symmetrically provided with mounting holes on both sides; claws are provided around the mounting holes,

[0008] A first low-frequency vibration noise reduction zone is arranged in the middle of the friction material layer; a second low-frequency vibration noise reduction zone and a third low-frequency vibration noise reduction zone are arranged on both sides of the friction material layer along the action direction of the brake pad.

[0009] Preferably, the first low-frequency vibration noise reduction area is a groove structure, arranged at the center of the friction material layer, the width of the groove is 2-4 mm, and the depth of the groove is 4-6 mm.

[0010] Preferably, the radius of both sides of the groove of the first low-frequency vibration noise reduction area is 3-5 mm.

[0011] Preferably, the second low-frequency vibration noise reduction zone and the third low-frequency vibration noise reduction zone are symmetrically distributed on both sides of the first low-frequency vibration noise reduction zone.

[0012] Preferably, the second low-frequency vibration noise reduction zone and the third low-frequency vibration noise reduction zone are sinker structures, and a 2-4 mm fillet is provided at the connection between the sinker and the friction material layer.

[0013] Preferably, the thickness of the second low-frequency vibration noise reduction zone and the third low-frequency vibration noise reduction zone is 1 / 3-2 / 3 of the thickness of the main friction material layer.

[0014] The utility model includes but is not limited to the following beneficial effects:

[0015] The utility model provides the first, second and third low-frequency vibration noise reduction zones in the friction material layer, and decomposes the friction stress generated in the brake pad friction material when the car brakes into multiple directions through the stress start direction, the stress end direction and the stress concentration direction, thereby greatly reducing the vibration frequency during braking, effectively reducing the noise generated when the car brakes, and greatly improving the driving comfort of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 yes Figure 1 Top view of the .

[0018] In the figure: 1. bottom plate; 2. positioning protrusion; 3. induction line slot; 4. mounting hole; 5. claw; 6. friction material layer; 7. first low-frequency vibration noise reduction zone; 8. second low-frequency vibration noise reduction zone; 9. third low-frequency vibration noise reduction zone. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Embodiment 1: A brake pad with excellent NVH performance, the structure of which is as follows Figure 1 and Figure 2 As shown, it comprises a bottom plate 1 and a friction material layer 6 fixed on the bottom plate 1, and a positioning protrusion 2 is provided in the middle of the bottom plate 1.

[0021] The positioning protrusion 2 is symmetrically provided with induction line slots 3 on both sides; the induction line slots 3 are symmetrically provided with mounting holes 4 on both sides; a clamping claw 5 is provided around the mounting hole 4, and the clamping claw 5 adopts an arc structure; a first low-frequency vibration noise reduction area 7 is provided in the middle of the friction material layer 6; a second low-frequency vibration noise reduction area 8 and a third low-frequency vibration noise reduction area 9 are provided on both sides of the friction material layer 6 along the action direction of the brake pad;

[0022] Specifically, the first low-frequency vibration noise reduction area 7 is a groove structure, arranged at the center of the friction material layer 6, the width of the groove is 2-4 mm, and the depth of the groove is 4-6 mm;

[0023] The fillets on both sides of the groove in the first low-frequency vibration noise reduction area 7 are 3-5mm; this structural design effectively disperses the stress direction of the friction stress concentration area;

[0024] The second low-frequency vibration noise reduction area 8 and the third low-frequency vibration noise reduction area 9 are symmetrically distributed on both sides of the first low-frequency vibration noise reduction area 7;

[0025] The second low-frequency vibration noise reduction area 8 and the third low-frequency vibration noise reduction area 9 are sink structures, and the connection between the sink and the friction material layer 6 is provided with a 2-4 mm fillet;

[0026] The thickness of the second low-frequency vibration noise reduction zone 8 and the third low-frequency vibration noise reduction zone 9 is 1 / 3-2 / 3 of the thickness of the main friction material layer 6; this structural design effectively disperses the friction stress in the start and end directions of the brake pad into multiple directions, thereby cooperating with the first low-frequency vibration noise reduction zone 7 to reduce the overall vibration frequency of the brake pad and reduce noise.

[0027] The claws 5 are symmetrically arranged on both sides of the positioning protrusion 2, and their function is to clamp and fix the brake pad in the caliper through the claws 5 to prevent the brake pad from loosening;

[0028] The bottom plate 1 has a symmetrically arranged induction wire slot 3 on both sides of the positioning protrusion 2. The induction wire slot (3) is used to install a sensor to detect the wear of the brake pad and feedback data to prevent the risk of brake failure caused by brake pad defects;

[0029] The mounting holes 4 symmetrically arranged on both sides of the induction line slot 3 are used to mount the brake pad in the caliper and fix it, thereby improving the mounting strength of the brake pad.

[0030] We know that the principle of automobile braking is that the friction material of the brake pad and the brake disc rub against each other to brake the vehicle to a stop. This process will cause great friction stress to act on the friction material layer of the brake pad. The utility model opens the first, second and third low-frequency vibration noise reduction zones in the friction material layer to decompose the friction stress generated in the brake pad friction material when the car brakes into multiple directions through the stress start direction, stress end direction and stress concentration direction, thereby greatly reducing the vibration frequency during braking, effectively reducing the noise generated when the car brakes, and improving the driving comfort of the vehicle.

[0031] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A brake pad with excellent NVH performance, characterized in that: It comprises a base plate (1) and a friction material layer (6) fixed on the base plate (1), wherein the base plate (1) is provided with a positioning protrusion (2), an induction line slot (3) and a claw (5); The positioning protrusion (2) is located in the middle of the bottom plate (1); the positioning protrusion (2) is symmetrically provided with sensing line slots (3), and the sensing line slots (3) are used to install sensors to detect the wear of the brake pad and feedback data; the sensing line slots (3) are symmetrically provided with mounting holes (4) on both sides; and claws (5) are provided around the mounting holes (4). A first low-frequency vibration noise reduction zone (7) is arranged in the middle of the friction material layer (6); a second low-frequency vibration noise reduction zone (8) and a third low-frequency vibration noise reduction zone (9) are arranged on both sides of the friction material layer (6) along the action direction of the brake pad.

2. The brake pad with excellent NVH performance according to claim 1, characterized in that: The first low-frequency vibration noise reduction area (7) is a groove structure, arranged at the center of the friction material layer (6), the width of the groove is 2-4 mm, and the depth of the groove is 4-6 mm.

3. The brake pad with excellent NVH performance according to claim 1, characterized in that: The rounded corners on both sides of the groove of the first low-frequency vibration noise reduction area (7) are 3-5 mm.

4. The brake pad with excellent NVH performance according to claim 1, characterized in that: The second low-frequency vibration noise reduction area (8) and the third low-frequency vibration noise reduction area (9) are symmetrically distributed on both sides of the first low-frequency vibration noise reduction area (7).

5. The brake pad with excellent NVH performance according to claim 1, characterized in that: The second low-frequency vibration noise reduction zone (8) and the third low-frequency vibration noise reduction zone (9) are sinker structures, and a 2-4 mm fillet is provided at the connection between the sinker and the friction material layer (6).

6. The brake pad with excellent NVH performance according to claim 1, characterized in that: The thickness of the second low-frequency vibration noise reduction zone (8) and the third low-frequency vibration noise reduction zone (9) is 1 / 3 to 2 / 3 of the thickness of the main friction material layer (6).

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