Sound absorbing sponge tire

Abstract

This utility model discloses a sound-absorbing sponge tire, including a tire body and a sound-absorbing part. The tire body includes an airtight layer and a sidewall. An installation groove is formed along the circumference of the inner wall of the sidewall. The sound-absorbing part consists of two rubber rings installed in the installation groove, an annular elastic rubber layer connecting the rubber rings, and multiple sound-absorbing sponges adhered to the elastic rubber layer. The rubber rings can be fixed to the installation groove by clips or adhesive to form an annular support frame. Sound-absorbing sponges are evenly arranged on the inner side of the elastic rubber layer. The sound-absorbing sponges cover the airtight layer in a parallel annular shape with a semi-circular cross-section. The coverage width is 60%-80% of the tire tread contact width, and the thickness of the thickest part is 2-4 times the thickness of the tire crown center. The interval between adjacent annular shapes is 10-50mm. This utility model ensures sidewall strength and airtightness through a modular installation structure, while effectively absorbing tire noise through the precise layout of the sound-absorbing sponges, avoiding excessive increase in tire weight, and balancing noise reduction and fuel economy.

Description

Technical Field

[0001] This utility model relates to the field of tire technology, specifically to a sound-absorbing sponge tire. Background Technology

[0002] In the field of tire technology, tire noise (especially tire noise) has always been a significant issue affecting driving comfort. Traditional tires typically reduce noise by optimizing tread patterns or rubber materials during design, but the effect is limited. Some existing technologies attempt to add sound-absorbing materials inside the tire; however, these methods have the following drawbacks: sound-absorbing structures are complex to install, easily compromising the integrity of the original tire structure and affecting sidewall strength or airtightness; some sound-absorbing designs excessively increase tire weight, leading to increased rotational inertia, etc. Utility Model Content

[0003] The purpose of this invention is to solve the problems existing in the above-mentioned background art when adding sound-absorbing materials inside the tire, and to provide a sound-absorbing sponge tire.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: a sound-absorbing sponge tire, comprising a tire body and a sound-absorbing part, wherein the tire body comprises an airtight layer and a sidewall, and mounting grooves are formed on the inner walls of the two sidewalls along the circumferential direction; the sound-absorbing part comprises two rubber rings respectively installed in the mounting grooves, and an annular elastic rubber layer is connected between the two rubber rings along the circumferential direction, wherein a plurality of sound-absorbing sponges are adhered to the elastic rubber layer.

[0005] Furthermore, the mounting groove has a buckle at the opening, and both rubber rings are fitted into the mounting groove.

[0006] Furthermore, both rubber rings are glued to the mounting groove.

[0007] Furthermore, the sound-absorbing sponge is bonded to the inner side of the elastic rubber layer at equal intervals.

[0008] Furthermore, the width of the sound-absorbing sponge covering the airtight layer is 60% to 80% of the tire tread ground contact width.

[0009] Furthermore, the thickness of the thickest part of the sound-absorbing sponge is 2 to 4 times the thickness of the center part of the tire crown in the tire cross section.

[0010] Furthermore, the sound-absorbing sponge is applied to the airtight layer of the tire cavity in the form of multiple parallel rings with a semi-circular cross-section.

[0011] Furthermore, the spacing between two adjacent parallel ring-shaped sound-absorbing sponges is 10mm-50mm.

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

[0013] 1. The sound-absorbing part is fastened or bonded to the mounting groove on the tire sidewall by a rubber ring, forming a ring-shaped support frame. This ensures the stable installation of the elastic rubber layer and sound-absorbing sponge without compromising the strength of the tire sidewall, while maintaining the integrity of the airtight layer to ensure tire airtightness and safety.

[0014] 2. The sound-absorbing sponge is arranged in a semi-circular cross-section with parallel rings spaced 10-50mm apart. This ensures noise reduction while avoiding excessive material accumulation, reducing tire weight, and maintaining rotational inertia and fuel economy. By covering the tire's inner airtight layer with a width of 60%-80% of the tread contact patch width, and with the thickest part of the sponge being 2-4 times the thickness of the tire crown center, the main noise source areas during contact patch are precisely covered. Combined with the semi-circular cross-section and parallel ring arrangement, this effectively absorbs noise generated by the tire during driving. 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 inner cavity of the tire body in this utility model;

[0017] Figure 3 This is a schematic diagram showing the connection between the rubber ring, the elastic rubber layer, and the sound-absorbing sponge in this utility model;

[0018] Figure 4 This is a schematic diagram of the rubber ring installed in the mounting groove on the tire sidewall in this utility model.

[0019] In the diagram: 1-Tire body, 2-Sound-absorbing part, 3-Airtight layer, 4-Sidewall part, 5-Mounting groove, 6-Rubber ring, 7-Elastic rubber layer, 8-Sound-absorbing sponge. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Combination Figures 1 to 4 The sound-absorbing sponge tire shown includes a tire body 1 and a sound-absorbing part 2. The tire body 1 includes an airtight layer 3 and a sidewall 4. The inner walls of the two sidewalls 4 are provided with mounting grooves 5 along the circumferential direction. The sound-absorbing part 2 includes two rubber rings 6 respectively installed in the mounting grooves 5. An annular elastic rubber layer 7 is provided between the two rubber rings 6 along the circumferential direction. Multiple sound-absorbing sponges 8 are adhered to the elastic rubber layer 7.

[0023] like Figure 4 As shown, the two rubber rings 6 can be snapped into the mounting groove 5 by setting a buckle at the opening of the mounting groove 5; or they can be glued into the mounting groove 5. The rubber rings 6 are fixed in the mounting groove 5 of the tire sidewall 4 by buckles or glue, forming a ring support frame. The elastic rubber layer 7 connects the two rubber rings 6 in the circumferential direction, and the sound-absorbing sponge 8 is laid flat on the surface of the airtight layer 3.

[0024] Combination Figure 3-4 As shown, the sound-absorbing sponge 8 is bonded to the inner side of the elastic rubber layer 7 at equal intervals. After the two rubber rings 6 are installed in the mounting groove 5, one of the rubber rings 6 can be rotated and adjusted to make the sound-absorbing sponge 8 parallel to the central axis of the tire body 1.

[0025] The sound-absorbing sponge 8 covers 60% to 80% of the tire's tread contact width, ensuring coverage of the main noise-generating areas when the tire contacts the ground. The thickest part of the sound-absorbing sponge 8 is 2 to 4 times the thickness of the center part of the tire crown. The sound-absorbing sponge 8 is applied to the tire's inner cavity in multiple parallel rings with a semi-circular cross-section. The spacing between two adjacent parallel rings of sound-absorbing sponge 8 is 10mm-50mm. The lightweight design (semi-circular cross-section, reasonable spacing) of the elastic rubber layer 7 and the sound-absorbing sponge 8 ensures noise reduction while avoiding excessive tire weight, maintaining the tire's rotational inertia and fuel economy. The mating structure of the mounting groove 5 and the rubber ring 6 does not affect the strength of the sidewall 4, preserving the integrity of the airtight layer 3 and ensuring that the tire's airtightness and safety are not affected.

[0026] Material selection for rubber ring 6 and elastic rubber layer 7:

[0027] The rubber ring 6 needs to possess high elasticity, wear resistance, and good structural support, preferably styrene-butadiene rubber (SBR) or neoprene rubber (CR). SBR has excellent wear resistance and weather resistance, making it suitable for tires subjected to long-term deformation. Neoprene rubber, on the other hand, has aging resistance, oil resistance, and flame retardancy, which can enhance the stability of the installation structure while ensuring elasticity, ensuring a firm snap-fit ​​or adhesive connection between the rubber ring 6 and the mounting groove 5, and preventing it from falling off due to vibration during driving.

[0028] The elastic rubber layer 7 needs to balance flexibility and fatigue resistance to adapt to the dynamic deformation when the tire rotates. Natural rubber (NR) or ethylene propylene diene monomer (EPDM) rubber can be selected. Natural rubber has extremely high elasticity and tensile strength, which can effectively buffer the impact during tire driving. EPDM rubber has excellent ozone resistance and high and low temperature resistance, can maintain elasticity under complex road conditions, and has good adhesion compatibility with sound-absorbing sponge to ensure the durability of the overall structure of the sound-absorbing part.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sound-absorbing sponge tire, comprising a tire body (1) and a sound-absorbing part (2), characterized in that: The tire body (1) includes an airtight layer (3) and a sidewall (4). The inner walls of the two sidewalls (4) are provided with mounting grooves (5) along the circumferential direction. The sound-absorbing part (2) includes two rubber rings (6) installed in the mounting grooves (5) respectively. An annular elastic rubber layer (7) is provided between the two rubber rings (6) along the circumferential direction. Multiple sound-absorbing sponges (8) are adhered to the elastic rubber layer (7).

2. The sound-absorbing sponge tire according to claim 1, characterized in that: The mounting groove (5) is provided with a buckle at the opening, and both rubber rings (6) are fitted into the mounting groove (5).

3. The sound-absorbing sponge tire according to claim 1, characterized in that: Both rubber rings (6) are glued to the mounting groove (5).

4. The sound-absorbing sponge tire according to claim 1, characterized in that: The sound-absorbing sponge (8) is bonded to the inner side of the elastic rubber layer (7) at equal intervals.

5. The sound-absorbing sponge tire according to claim 1, characterized in that: The width of the sound-absorbing sponge (8) covering the airtight layer (3) is 60% to 80% of the tire tread ground contact width.

6. The sound-absorbing sponge tire according to claim 1, characterized in that: The thickness of the thickest part of the sound-absorbing sponge (8) is 2 to 4 times the thickness of the center part of the tire crown section.

7. The sound-absorbing sponge tire according to claim 1, characterized in that: The sound-absorbing sponge (8) is applied to the airtight layer (3) of the tire cavity in a plurality of parallel rings with a semi-circular cross section.

8. The sound-absorbing sponge tire according to claim 1, characterized in that: The spacing between two adjacent parallel ring-shaped sound-absorbing sponges (8) is 10mm-50mm.

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