Noise reduction type brake lining

Abstract

The utility model discloses a noise reduction type brake lining which comprises a lining body, a plurality of sound absorption holes are formed in the friction end face of the lining body, and the sound absorption holes are obliquely formed and communicated with a sound absorption inner cavity located in the lining body. Noise generated on the friction end face of the lining body is subjected to noise reduction through the noise reduction structures in the sound absorption holes and then is absorbed by the sound absorption inner cavities. According to the device, the noise reduction structure of the brake lining is simplified, the manufacturing process is simpler, and then the manufacturing cost of the brake lining is reduced; and meanwhile, when the noise passes through the sound absorption holes, gradual noise reduction is achieved till the noise enters the sound absorption inner cavity and is absorbed through the sound absorption material, and the noise reduction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile brakes, in particular to a noise-reducing brake lining. Background Art

[0002] Automobile brakes utilize a brake transmission mechanism to press the brake lining against the brake drum. The friction between the friction lining and the brake drum reduces the wheel's rotational speed, achieving deceleration until the vehicle stops. When the brake is in use, the brake lining is pressed against the brake drum to achieve braking. During the braking process, the brake lining and the brake drum experience intense friction, generating a large amount of noise, which in turn causes noise pollution. Patent number CN214221845U, entitled "A drum brake lining with good noise reduction effect," discloses a brake lining with good noise reduction effect. While it is undeniable that the noise reduction effect is good, due to the relatively complex noise reduction structure, a lot of work will be invested in the production process of the brake lining, the production process is relatively complex, and the production cost will also increase, which is not conducive to the practical application of the brake lining. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a noise-reducing brake lining.

[0004] According to the technical solution provided in the embodiment of the present application, the noise-reducing brake lining includes a lining body, and a plurality of sound-absorbing holes are provided on the friction end surface of the lining body. The plurality of sound-absorbing holes are placed at an angle and connected to the sound-absorbing inner cavity located in the lining body. The noise generated on the friction end surface of the lining body is reduced by the noise reduction structure in the sound-absorbing hole and then absorbed by the sound-absorbing inner cavity.

[0005] Furthermore, the sound-absorbing inner cavity is filled with sound-absorbing material to improve noise reduction efficiency.

[0006] Furthermore, the sound absorbing material is polyester fiber, which is convenient for filling with noise reduction material.

[0007] Furthermore, a wear-resistant layer is applied on the friction end surface of the lining body.

[0008] Furthermore, the noise reduction structure is in the shape of a spiral protrusion, which achieves gradual noise reduction through the sound-absorbing holes.

[0009] Furthermore, a sound absorbing panel is fixedly provided on the side end surface of the lining body to reduce the probability of noise passing through the lining body.

[0010] To sum up, the beneficial effects of the present application are: the device of the present application simplifies the noise reduction structure of the brake lining, the manufacturing process is simpler, and the manufacturing cost of the brake lining is reduced; at the same time, the noise is gradually reduced when passing through the sound-absorbing holes until it enters the suction cavity and is absorbed by the sound-absorbing material, thereby improving the noise reduction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0012] Figure 1 This is a schematic structural diagram of the overall device of the utility model;

[0013] Figure 2 It is a schematic cross-sectional view of the overall device of the utility model.

[0014] Reference numerals in the figure: lining body - 1; sound-absorbing hole - 2; noise reduction structure - 21; sound-absorbing inner cavity - 3. DETAILED DESCRIPTION

[0015] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only the portions relevant to the invention are shown in the accompanying drawings.

[0016] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0017] Noise-reducing brake linings, e.g. Figure 1 As shown, a plurality of sound-absorbing holes 2 are provided on the friction end surface of the lining body 1;

[0018] like Figure 2 As shown, several sound-absorbing holes 2 are placed obliquely with respect to the friction end surface of the lining body 1, and a sound-absorbing inner cavity 3 is provided in the lining body 1, and several sound-absorbing holes 2 are communicated with the sound-absorbing inner cavity 3, and a spiral noise reduction structure 21 is provided on the inner end surface of each sound-absorbing hole 2, and the noise reduction structure 21 is a spiral protrusion located on the inner end surface of the sound-absorbing hole 2.

[0019] When braking, the friction end surface of the lining body 1 is pressed against the brake drum. The noise generated by the friction will enter the sound-absorbing inner cavity 3 through the sound-absorbing hole 2 and be absorbed, thereby achieving the purpose of noise reduction. A spirally raised noise reduction structure 21 is provided on the inner end surface of the sound-absorbing hole 2. According to the muffler principle of the muffler, the noise entering the sound-absorbing hole 2 can be gradually reduced. Finally, the noise is absorbed by the sound-absorbing material filled in the sound-absorbing inner cavity 3, thereby achieving noise reduction.

[0020] At the same time, sound absorbing panels are provided on the front and rear surfaces of the lining body 1 to reduce the noise entering the lining body 1 and discharge it from the lining body 1, thereby further reducing noise.

[0021] The present application uses polyester fiber as the sound-absorbing material filled into the sound-absorbing inner cavity 3, mainly because polyester fiber is in liquid state at high temperature, which facilitates subsequent filling and reduces the complexity of the manufacturing process.

[0022] The above description is merely an illustration of the preferred embodiments of the present application and the technical principles employed. The scope of the invention herein is not limited to the technical solutions formed by the specific combination of the aforementioned technical features, but also encompasses other technical solutions formed by any combination of the aforementioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the aforementioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A noise reduction brake lining, comprising a lining body (1), characterized in that: A plurality of sound-absorbing holes (2) are provided on the friction end surface of the lining body (1). The plurality of sound-absorbing holes (2) are placed at an angle and communicate with a sound-absorbing inner cavity (3) located in the lining body (1). Noise generated on the friction end surface of the lining body (1) is reduced by the noise reduction structure (21) in the sound-absorbing holes (2) and then absorbed by the sound-absorbing inner cavity (3).

2. The noise reduction brake lining according to claim 1, characterized in that: The sound-absorbing inner cavity (3) is filled with sound-absorbing material.

3. The noise reduction brake lining according to claim 2, characterized in that: The sound absorbing material is polyester fiber.

4. The noise reduction brake lining according to claim 1, characterized in that: A wear-resistant layer is applied on the friction end surface of the lining body (1).

5. The noise reduction brake lining according to claim 1, characterized in that: The noise reduction structure (21) is in the shape of a spiral protrusion.

6. The noise reduction brake lining according to claim 1, characterized in that: A sound absorbing plate is fixedly provided on the side end surface of the lining body (1).

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