Composite sound-absorbing cotton structure for sound absorption and noise reduction of tire

Abstract

The utility model discloses a composite sound-absorbing cotton structure for sound absorption and noise reduction of a tire, which relates to the technical field of tire noise reduction and comprises a sound-absorbing cotton outer ring and a sound-absorbing cotton inner ring which are fixed on the inner side of the tire, the sound-absorbing cotton outer ring and the sound-absorbing cotton inner ring are both of annular structures which are coaxially arranged with the tire; the sound-absorbing cotton inner ring is fixedly connected to the inner side of the sound-absorbing cotton outer ring; a plurality of inner ring sound-absorbing convex blocks are arranged on the inner side of the sound-absorbing cotton inner ring; the composite sound-absorbing cotton structure is reasonable in structural design and has excellent sound-absorbing performance, the composite sound-absorbing cotton structure has a high sound-absorbing coefficient, noise of various frequencies generated in the running process of the tire can be absorbed to the maximum extent, and both low-frequency humping sound and high-frequency sharp sound can be effectively absorbed and attenuated.

Description

Technical Field

[0001] The utility model relates to the technical field of tire noise reduction, in particular to a composite sound-absorbing cotton structure used for tire sound absorption and noise reduction. Background Art

[0002] The main sources of noise during vehicle driving include engine noise, tire noise, and aerodynamic noise. When the engine is working, the pressure fluctuations generated by the combustion of fuel in the cylinder will cause vibrations in the engine block, thereby generating combustion noise. The frequency and intensity of this noise are related to the engine speed, load, and characteristics of the combustion process; when the tire pattern contacts the road surface, air compression and release will occur, thereby generating pattern noise. Different tire pattern designs will produce different noise levels; when tires are driving on different road surfaces, they will be affected by factors such as the roughness, hardness, and unevenness of the road surface, thereby generating road noise. Rough roads will cause the tires to produce greater vibration and noise;

[0003] As for the noise reduction of tire noise, the noise reduction effect of current noise reduction methods needs to be further improved. Utility Model Content

[0004] The purpose of the utility model is to provide a composite sound-absorbing cotton structure for tyre sound absorption and noise reduction, which can significantly reduce the tyre noise of a vehicle while it is running.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A composite sound-absorbing cotton structure for tyre sound absorption and noise reduction, comprising an outer ring of sound-absorbing cotton and an inner ring of sound-absorbing cotton fixed to the inner side of the tyre;

[0007] The outer ring and inner ring of the sound-absorbing cotton are both annular structures arranged coaxially with the tire;

[0008] The inner ring of the sound-absorbing cotton is fixedly connected to the inner side of the outer ring of the sound-absorbing cotton;

[0009] The inner side of the inner ring of the sound-absorbing cotton is provided with a plurality of inner ring sound-absorbing bumps;

[0010] The inner side of the outer ring of the sound-absorbing cotton is provided with an outer ring accommodating ring groove, and the outer side of the inner ring of the sound-absorbing cotton is provided with an inner ring accommodating ring groove. The outer ring accommodating ring groove and the inner ring accommodating ring groove together form a sound-absorbing refraction space.

[0011] Description: The anechoic refraction space can make the noise decay quickly during the reciprocating reflection process.

[0012] Preferably, a middle circle of sound-absorbing cotton is fixed in the sound-absorbing refraction space, and a plurality of middle circle sound-absorbing protrusions are provided on the inner side of the middle circle of sound-absorbing cotton.

[0013] Description: The middle circle of the sound-absorbing cotton can help quickly absorb the noise and vibration entering the sound-absorbing and refractive space.

[0014] Preferably, the inner side surface of the outer ring receiving ring groove has a plurality of outer ring sound absorbing protrusions;

[0015] The outer side walls of the middle ring of the sound-absorbing cotton are jointly pressed and supported on the sound-absorbing protrusions of each outer ring.

[0016] Note: The outer ring sound-absorbing bumps can effectively absorb the noise and vibration reflected from the tire cavity.

[0017] Preferably, the inner side surface of the inner ring accommodating ring groove has a plurality of inner ring outer sound absorbing protrusions.

[0018] Note: The outer sound-absorbing bumps on the inner ring can help absorb the noise and vibration reflected from the ground.

[0019] Preferably, lateral sound-absorbing cotton is fixed on the sidewalls of the outer ring and the inner ring of the sound-absorbing cotton along the tire axis. The lateral sound-absorbing cotton is an annular structure arranged coaxially with the tire, and the side of the lateral sound-absorbing cotton away from the outer ring of the sound-absorbing cotton has a plurality of lateral sound-absorbing protrusions.

[0020] The lateral sound-absorbing cotton has a hollow lateral refraction sound-absorbing space inside.

[0021] Description: The lateral sound-absorbing bumps can effectively absorb the noise and vibration from the side of the tire, and the lateral refraction and silencer space can further reduce the spread of noise, causing the noise to decay rapidly during the reciprocating reflection process.

[0022] Compared with the prior art, the beneficial effects of the present invention are embodied in the following aspects:

[0023] 1. The utility model has a reasonable structural design and excellent sound absorption performance. The composite sound-absorbing cotton structure has a high sound absorption coefficient, which can greatly absorb the noise of various frequencies generated by the tire during driving, whether it is low-frequency rumbling or high-frequency sharp sound, it can effectively absorb and attenuate;

[0024] 2. This utility model has a wide-band sound absorption range and can cope with various complex noise spectra generated by vehicles in motion, from low-frequency noise transmitted from engine vibration to tires to high-frequency noise generated by the contact between tire tread and road surface, and can effectively absorb them.

[0025] 3. The utility model has good durability and can resist the influence of various environmental factors such as high temperature, low temperature, ultraviolet radiation, etc. during long-term use, maintaining its sound absorption performance and physical structure stability;

[0026] 4. The utility model has stable structural strength and sufficient structural strength to maintain structural integrity under the complex stress environment inside the tire. When the tire rolls, deforms and is subjected to various external forces, it will not break, damage or deform excessively. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the main view of the utility model;

[0028] Figure 2 yes Figure 1 Left view of;

[0029] Figure 3 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0030] In the figure, 100-tire, 101-sound-absorbing refraction space, 11-sound-absorbing cotton outer ring, 110-outer ring sound-absorbing protrusion, 111-outer ring receiving ring groove, 12-sound-absorbing cotton inner ring, 120-inner ring sound-absorbing protrusion, 121-inner ring receiving ring groove, 122-inner ring outer sound-absorbing protrusion, 13-sound-absorbing cotton middle ring, 130-middle ring sound-absorbing protrusion, 14-lateral sound-absorbing cotton, 140-lateral sound-absorbing protrusion, 141-lateral refraction sound-absorbing space. DETAILED DESCRIPTION

[0031] The following combination Figure 1-Figure 3 The present invention is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are consistent with the up, down, left, right, front and back directions of the projection relationship of each main view or structural schematic diagram itself.

[0032] Example 1:

[0033] A composite sound-absorbing cotton structure for tire sound absorption and noise reduction, such as Figure 1 As shown, it includes a sound-absorbing cotton outer ring 11 and a sound-absorbing cotton inner ring 12 fixed to the inner side of the tire 100;

[0034] The outer ring 11 and the inner ring 12 of the sound-absorbing cotton are both annular structures arranged coaxially with the tire 100;

[0035] The inner ring 12 of the sound-absorbing cotton is fixedly connected to the inner side of the outer ring 11 of the sound-absorbing cotton;

[0036] like Figure 3 As shown, the inner side of the inner ring 12 of the sound-absorbing cotton is provided with a plurality of inner ring sound-absorbing protrusions 120 .

[0037] like Figure 3 As shown, the inner side of the outer ring 11 of the sound-absorbing cotton is provided with an outer ring accommodating ring groove 111, and the outer side of the inner ring 12 of the sound-absorbing cotton is provided with an inner ring accommodating ring groove 121. The outer ring accommodating ring groove 111 and the inner ring accommodating ring groove 121 together form a sound-absorbing refraction space 101.

[0038] Example 2:

[0039] On the basis of Example 1, Figure 3 As shown, a sound-absorbing cotton middle circle 13 is fixed in the sound-absorbing refraction space 101 , and a plurality of middle circle sound-absorbing protrusions 130 are provided on the inner side of the sound-absorbing cotton middle circle 13 .

[0040] The inner side surface of the outer ring receiving ring groove 111 is provided with a plurality of outer ring sound absorbing protrusions 110;

[0041] The outer side walls of the middle ring 13 of the sound-absorbing cotton are jointly pressed and supported on each outer ring sound-absorbing protrusion 110.

[0042] Example 3:

[0043] On the basis of Example 2, Figure 3 As shown, the inner side surface of the inner ring receiving ring groove 121 has a plurality of inner ring outer sound absorbing protrusions 122.

[0044] Example 4:

[0045] On the basis of Example 3, Figure 3 As shown, lateral sound-absorbing cotton 14 is fixed to the sidewalls of the outer ring 11 and the inner ring 12 along the axial direction of the tire 100. The lateral sound-absorbing cotton 14 is made of polyurethane sound-absorbing cotton material and is an annular structure arranged coaxially with the tire 100. The side of the lateral sound-absorbing cotton 14 away from the outer ring 11 has multiple lateral sound-absorbing protrusions 140.

[0046] The lateral sound-absorbing cotton 14 has a hollow lateral refraction and sound-absorbing space 141 inside.

[0047] It should be noted that the outer ring 11, inner ring 12 and lateral sound-absorbing cotton 14 used in this application are all polyurethane sound-absorbing cotton materials in the prior art. No special limitation is made here. Those skilled in the art can choose them according to their needs as long as the technical solution of this application can be implemented.

[0048] The outer ring sound-absorbing protrusion 110, the inner ring sound-absorbing protrusion 120, the middle ring sound-absorbing protrusion 130, the inner ring outer sound-absorbing protrusion 122, and the lateral sound-absorbing protrusion 140 are all conical structures with a top angle of 40°, and the tips are rounded;

[0049] In the actual application of the present invention, during the manufacturing process, the middle ring 13 of the sound-absorbing cotton is first fixedly bonded to the outer ring receiving ring groove 111, and then the outer ring 11 of the sound-absorbing cotton and the middle ring 13 of the sound-absorbing cotton are fixedly bonded to the inner side of the tire 100;

[0050] Then, the inner ring of sound-absorbing cotton 12 is fixedly bonded to the inner side of the outer ring of sound-absorbing cotton 11, and finally, the two lateral sound-absorbing cottons 14 are fixedly bonded to the sidewalls of the outer ring of sound-absorbing cotton 11 and the inner ring of sound-absorbing cotton 12 along the axis direction of the tire 100;

[0051] A composite sound-absorbing cotton structure can be formed inside the tire 100, which has excellent noise reduction and sound absorption performance.

Claims

1. A composite sound-absorbing cotton structure for tire sound absorption and noise reduction, characterized in that: It comprises a sound-absorbing cotton outer ring (11) and a sound-absorbing cotton inner ring (12) fixed on the inner side of the tire (100); The outer ring (11) of the sound-absorbing cotton and the inner ring (12) of the sound-absorbing cotton are both annular structures arranged coaxially with the tire (100); The inner ring (12) of the sound-absorbing cotton is fixedly connected to the inner side of the outer ring (11) of the sound-absorbing cotton; The inner side of the sound-absorbing cotton inner ring (12) is provided with a plurality of inner ring sound-absorbing protrusions (120); The inner side of the outer ring (11) of the sound-absorbing cotton is provided with an outer ring accommodating ring groove (111), and the outer side of the inner ring (12) of the sound-absorbing cotton is provided with an inner ring accommodating ring groove (121). The outer ring accommodating ring groove (111) and the inner ring accommodating ring groove (121) together form a sound-absorbing refraction space (101).

2. The composite sound-absorbing cotton structure for tire sound absorption and noise reduction according to claim 1, characterized in that: A sound-absorbing cotton middle circle (13) is fixed in the sound-absorbing refraction space (101), and a plurality of middle circle sound-absorbing protrusions (130) are provided on the inner side of the sound-absorbing cotton middle circle (13).

3. The composite sound-absorbing cotton structure for tire sound absorption and noise reduction according to claim 2, characterized in that: The inner side surface of the outer ring receiving ring groove (111) is provided with a plurality of outer ring sound absorbing protrusions (110); The outer side walls of the middle ring (13) of the sound-absorbing cotton are jointly pressed and supported on the sound-absorbing protrusions (110) of the outer rings.

4. The composite sound-absorbing cotton structure for tire sound absorption and noise reduction according to claim 1, characterized in that: The inner side surface of the inner ring accommodating ring groove (121) is provided with a plurality of inner ring outer sound absorbing protrusions (122).

5. The composite sound-absorbing cotton structure for tire sound absorption and noise reduction according to claim 1, characterized in that: Lateral sound-absorbing cotton (14) is fixed on the sidewalls of the sound-absorbing cotton outer ring (11) and the sound-absorbing cotton inner ring (12) along the axial direction of the tire (100), and the lateral sound-absorbing cotton (14) is an annular structure coaxially arranged with the tire (100), and the side of the lateral sound-absorbing cotton (14) away from the sound-absorbing cotton outer ring (11) has a plurality of lateral sound-absorbing protrusions (140); The lateral sound-absorbing cotton (14) has a hollow lateral refraction sound-absorbing space (141) inside.

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