Low-noise rubber tire

Abstract

The utility model relates to the technical field of rubber tires, and discloses a low-noise rubber tire which comprises a tire body, the tire body further comprises a bead part and a tread, precise patterns are arranged outside the tread and comprise convex patterns and transverse grooves, and the convex patterns and the transverse grooves are arranged outside the tread at equal intervals. Side grooves are formed in the edges of the two sides of the precise patterns correspondingly, and first annular blocks are bonded to the two sides of the inner wall of the tire body correspondingly; according to the rubber tire tread disclosed by the utility model, the precise patterns are arranged on the rubber tire tread, and the convex patterns and the transverse grooves which are transversely arranged at equal intervals in the precise patterns are communicated with the grooves on the two sides, so that noise generated by rolling of the rubber tire tread and the ground can be averagely dispersed into a wide frequency range through the grooves on the two sides; and moreover, the precise patterns are closely sequenced, so that stones on the road surface can be prevented from being clamped in the grooves, and the rubber tire is prevented from generating extra noise in the driving process.

Description

Technical Field

[0001] This utility model relates to the field of rubber tire technology, specifically a low-noise rubber tire. Background Technology

[0002] Rubber tires have excellent wear resistance and are widely used, from small strollers to large vehicles. Therefore, rubber tires play a very important role in our lives. However, existing rubber tires all produce some noise during use.

[0003] For example, Chinese Patent Publication No. CN220332395U discloses a low-noise rubber tire, including a tread, a rim is provided inside the tread, an axle is provided inside the rim, a placement frame is embedded in the front and back of the tread, sound-absorbing cotton is provided inside the placement frame, a first adhesive sheet is provided at the bottom of the sound-absorbing cotton, a second adhesive sheet is provided inside the placement frame, a first fixing sheet is symmetrically arranged on the left and right sides of the base surface of the placement frame, and a second fixing sheet is symmetrically arranged on the front and rear sides of the base surface of the placement frame.

[0004] The aforementioned comparative document shows that sound-absorbing cotton can absorb some noise, thereby reducing the noise generated by the tires. Furthermore, the first and second adhesive plates allow the sound-absorbing cotton to be disassembled and replaced when damaged, thus maintaining a good suction effect on the tires. The overall device has a simple structure, is easy to operate, and is more practical.

[0005] However, when the aforementioned low-noise rubber tires are in use, the sound-absorbing cotton structure on both sides of the tire sidewall can only absorb the noise generated by the resonance of the air flow inside the rubber tire. Furthermore, the sound-absorbing cotton can only have a certain sound absorption effect on both sides of the tire bead, and the sound absorption effect is poor. Effective noise reduction cannot be achieved between the tire tread and the tire body structure layers. Summary of the Invention

[0006] The purpose of this invention is to provide a low-noise rubber tire that can achieve noise reduction treatment on both the outer and inner sides of the tire, thereby improving the overall noise reduction effect of the tire.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a low-noise rubber tire, comprising a tire body, the tire body further comprising a tire bead and a tread, the tread having a precision pattern on its outer surface, the precision pattern comprising raised ridges and transverse grooves evenly spaced on the outer surface of the tread, side grooves being respectively formed at the two side edges of the precision pattern, a first annular block being respectively bonded to both sides of the inner wall of the tire body, a second annular block being bonded to the center of the circumference of the inner wall of the tire body, the tire body further comprising a wear-resistant layer and an airtight layer, a sound-absorbing layer being formed between the wear-resistant layer and the airtight layer.

[0008] Preferably, the raised ridges and the transverse grooves are located on the outer circumferential surface of the tread, and the outer groove of the raised ridges is connected to the transverse grooves.

[0009] Preferably, the two ends of the raised pattern and the converging point of the transverse groove are respectively connected to the side grooves on both sides of the circumference of the tire tread.

[0010] Preferably, the wear-resistant layer and the airtight layer are located sequentially on the outer side of the tire body, and the sound-absorbing layer is located on the inner side of the wear-resistant layer. The sound-absorbing layer is polyurethane sound-absorbing cotton.

[0011] Preferably, both the first annular block and the second annular block are filled with ether-type polyurethane sound-absorbing cotton.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, the rubber tire tread features a precision tread pattern. The convex ridges arranged at equal intervals in the tread pattern are connected to the transverse grooves and the side grooves on both sides. This allows the noise generated by the rubber tire rolling on the ground to be evenly distributed across a wide frequency range through the side grooves, thereby reducing noise. Furthermore, the tightly arranged precision tread pattern reduces the number of stones stuck in the grooves on the road surface, thus preventing the rubber tire from generating additional noise during driving.

[0014] In this invention, the rubber tire body uses a polyurethane sound-absorbing layer between the wear-resistant layer and the airtight layer to reduce vibration and noise caused by tire rotation and contact with the ground. The inner wall of the tire body and the first and second annular blocks on the sidewalls are filled with ether-type polyurethane sound-absorbing cotton, which reduces wheel vibration and noise transmission caused by air resonance in the tire body cavity. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the side cross-sectional structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the tire tread in this utility model;

[0018] Figure 4 for Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0019] In the diagram: 1. Tire body; 2. Precision tread pattern; 3. First annular block; 4. Airtight layer; 5. Noise-reducing layer; 6. Wear-resistant layer; 11. Tire bead; 12. Tread; 21. Raised pattern; 22. Lateral groove; 23. Side groove; 31. Second annular block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figure 1-4 The present invention provides a technical solution: a low-noise rubber tire, including a tire body 1, the tire body 1 also includes a tire bead 11 and a tread 12, the tread 12 is provided with a precision pattern 2 on the outside, the precision pattern 2 includes raised lines 21 and transverse grooves 22 provided at equal intervals on the outside of the tread 12, and side grooves 23 are respectively provided at the two side edges of the precision pattern 2.

[0022] The tire body 1 has a first annular block 3 bonded to both sides of the inner wall, and a second annular block 31 bonded to the center of the inner circumference of the tire body 1. The tire body 1 also includes a wear-resistant layer 6 and an airtight layer 4, and a sound-absorbing layer 5 is formed between the wear-resistant layer 6 and the airtight layer 4.

[0023] The wear-resistant layer 6 in this low-noise rubber tire includes a carcass ply and a cover layer, which provides good wear resistance to the tire tread 12. The airtight layer 4 is located on the inner side of the low-noise rubber tire and provides good sealing to the inner side of the rubber tire. Both the wear-resistant layer 6 and the airtight layer 4 are existing rubber tire structural layers, which will not be described in detail here.

[0024] The tread 12 of the rubber tire is provided with a precision tread pattern 2. The convex ridges 21 arranged at equal intervals in the lateral direction in the precision tread pattern 2 are connected to the lateral grooves 22 and the side grooves 23 on both sides. This allows the noise generated by the rubber tire tread 12 rolling with the ground to be evenly distributed to a wide frequency range through the side grooves, thereby reducing noise. In addition, the precision tread pattern 2 is closely arranged, which can reduce the number of stones stuck in the grooves on the road surface, thereby avoiding the rubber tire from generating additional noise during driving.

[0025] The rubber tire body 1 reduces vibration and noise caused by tire rotation and contact with the ground by using a polyurethane sound-absorbing layer 5 between the wear-resistant layer 6 and the airtight layer 4. The inner wall and the first annular block 3 and the second annular block 31 on the side wall of the tire body 1 are filled with ether-type polyurethane sound-absorbing cotton, which reduces wheel vibration and noise transmission caused by air resonance in the cavity of the tire body 1.

[0026] The raised tread 21 and the lateral groove 22 are located on the outer circumferential surface of the tread 12. The outer groove of the raised tread 21 is connected to the lateral groove 22. The two ends of the raised tread 21 and the converging point of the lateral groove 22 are respectively connected to the side grooves 23 on both sides of the circumference of the tread 12. The raised tread 21, which is arranged laterally at equal intervals in the precision pattern 2, is connected to the lateral groove 22 and the side grooves 23 on both sides. This allows the noise generated by the rolling of the rubber tire tread 12 with the ground to be evenly distributed to a wide frequency range through the side grooves, thereby reducing noise.

[0027] Among them, the wear-resistant layer 6 and the airtight layer 4 are located on the outer side of the tire body 1, and the sound-absorbing layer 5 is located on the inner side of the wear-resistant layer 6. The sound-absorbing layer 5 is polyurethane sound-absorbing cotton. The rubber tire body 1 reduces the vibration and noise caused by tire rotation and contact with the ground by the polyurethane sound-absorbing cotton sound-absorbing layer 5 set between the wear-resistant layer 6 and the airtight layer 4.

[0028] The first annular block 3 and the second annular block 31 are both filled with ether-type polyurethane sound-absorbing cotton. The first annular block 3 and the second annular block 31 on the inner wall and side wall of the tire body 1 are filled with ether-type polyurethane sound-absorbing cotton, which can reduce wheel vibration and noise transmission caused by air resonance in the cavity of the tire body 1.

[0029] Working principle: During use, the rubber tire tread 12 is equipped with a precision tread pattern 2. The convex ridges 21 arranged at equal intervals in the lateral direction of the precision tread pattern 2 are connected to the lateral grooves 22 and the side grooves 23 on both sides. This allows the noise generated by the rubber tire tread 12 rolling with the ground to be evenly distributed to a wide frequency range through the side grooves, thereby reducing noise. In addition, the precision tread pattern 2 is tightly arranged, which can reduce the number of stones stuck in the grooves on the road surface, thereby avoiding the rubber tire from generating additional noise during driving.

[0030] The rubber tire body 1 reduces vibration and noise caused by tire rotation and contact with the ground by using a polyurethane sound-absorbing layer 5 between the wear-resistant layer 6 and the airtight layer 4. The inner wall and the first annular block 3 and the second annular block 31 on the side wall of the tire body 1 are filled with ether-type polyurethane sound-absorbing cotton, which reduces wheel vibration and noise transmission caused by air resonance in the cavity of the tire body 1.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-noise rubber tire, comprising a tire body (1), characterized in that: The tire body (1) also includes a tire bead (11) and a tread (12). The tread (12) is provided with a precision pattern (2). The precision pattern (2) includes raised patterns (21) and transverse grooves (22) that are equally spaced on the outside of the tread (12). Side grooves (23) are respectively opened at the two sides of the precision pattern (2). A first annular block (3) is respectively bonded to both sides of the inner wall of the tire body (1). A second annular block (31) is bonded to the middle of the circumference of the inner wall of the tire body (1). The tire body (1) also includes a wear-resistant layer (6) and an airtight layer (4). A sound-absorbing layer (5) is formed between the wear-resistant layer (6) and the airtight layer (4).

2. The low-noise rubber tire according to claim 1, characterized in that: The raised pattern (21) and the transverse groove (22) are located on the outer circumferential surface of the tread (12), and the outer groove of the raised pattern (21) is connected to the transverse groove (22).

3. A low-noise rubber tire according to claim 2, characterized in that: The two ends of the raised pattern (21) and the convergence point of the transverse groove (22) are respectively connected to the side grooves (23) on both sides of the circumference of the tread (12).

4. A low-noise rubber tire according to claim 3, characterized in that: The wear-resistant layer (6) and the airtight layer (4) are located on the outside of the tire body (1) in sequence, and the sound-absorbing layer (5) is located on the inside of the wear-resistant layer (6). The sound-absorbing layer (5) is polyurethane sound-absorbing cotton.

5. A low-noise rubber tire according to claim 4, characterized in that: Both the first annular block (3) and the second annular block (31) are filled with ether-type polyurethane sound-absorbing cotton.

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