A multi-functional silent cotton tire

Abstract

The present invention discloses a multifunctional sound-absorbing cotton tire, belonging to the field of tires. It includes a tread portion and sound-absorbing cotton; the sound-absorbing cotton extends circumferentially along the tire to form a ring and is connected to the inner surface. The sound-absorbing cotton further includes a fitting portion and a bulging portion; the fitting portions are located on both sides of the sound-absorbing cotton and are connected to the inner surface through fitting members; the bulging portion is located between the fitting portions on both sides of the sound-absorbing cotton, is spaced from the inner surface and forms an annular cavity. A plurality of openings are formed in the bulging portion, and the openings extend from the junction of the bulging portion and the fitting portion on one side to the junction of the bulging portion and the fitting portion on the other side and end. The plurality of openings are evenly arranged circumferentially along the tire. The present invention is applied to tires, and solves the technical problems existing in the combination of existing self-repair and sound-absorbing cotton, that is, the self-repair effect of the tire is reduced due to the presence of the sound-absorbing cotton, and additional heat is generated due to the addition of self-repair and sound-absorbing cotton, resulting in an increase in internal noise.

Description

Technical Field

[0001] The present invention belongs to the field of tires, and particularly relates to a multi-functional sound-absorbing cotton tire. Background Art

[0002] New energy vehicles are green energy vehicles without diesel or gasoline engines. With the rapid development of the new energy vehicle industry and the improvement of people's living quality, consumers have higher requirements for the quiet comfort and puncture resistance and high safety of tires. To meet the needs of consumers, various tires with self-repairing materials and sound-absorbing cotton have emerged on the market. Among them, self-repairing tires can solve the problem of air leakage after the tire is punctured by a nail, and the sound-absorbing cotton can effectively reduce the cavity resonance sound of the tire.

[0003] By attaching sound-absorbing cotton to certain positions of the tire, the quiet comfort performance of the tire can be effectively improved. However, for existing tires with only sound-absorbing cotton attached, when the tire is punctured and repaired, the sound-absorbing cotton needs to be removed. This operation not only makes it difficult to restore the damaged sound-absorbing cotton, but also incomplete removal will interfere with the repair of the tire. To simultaneously meet the requirements of tire quietness and puncture resistance, the prior art proposes a combination of self-repairing and sound-absorbing cotton. Among them, the self-repairing material and the sound-absorbing cotton are sequentially attached to the inner side of the tire crown, which can effectively solve the problems of quietness and puncture resistance.

[0004] However, the above combination of self-repairing and sound-absorbing cotton has the following problems at the same time: ① When the tire is punctured by a nail, the sound-absorbing cotton attached to the inner side of the self-repairing material will affect the flow of the self-repairing rubber compound, thus greatly reducing the self-repairing effect of the tire; ② When the vehicle is running, a large amount of heat is generated inside the tire. Due to the increase in heat generated by the addition of self-repairing and sound-absorbing cotton, the internal noise increases due to the flow of hot air. Summary of the Invention

[0005] The details of one or more embodiments of the present invention are set forth in the following drawings and description, so that other features, objects, and advantages of the present application will become more concise and understandable.

[0006] The present invention provides a multi-functional sound-absorbing cotton tire, which solves the technical problems existing in the above combination of self-repairing and sound-absorbing cotton, namely, the self-repairing effect of the tire is reduced due to the presence of the sound-absorbing cotton, and the additional heat generated due to the addition of self-repairing and sound-absorbing cotton results in an increase in internal noise. It has the characteristics of greatly reducing the heat generated during tire running, good noise reduction effect, and strong self-repairing ability.

[0007] The present invention discloses a multi-functional sound-absorbing cotton tire, which includes a tread portion and sound-absorbing cotton; the tread portion extends circumferentially on the tire and forms an outer surface in contact with the ground and an inner surface in contact with the air filled in the tire; the sound-absorbing cotton extends circumferentially along the tire to form a ring and is connected to the inner surface, and the sound-absorbing cotton further includes a fitting portion and a bulging portion; the fitting portions are located on both sides of the sound-absorbing cotton and are connected to the inner surface through fitting members; the bulging portion is located between the fitting portions on both sides of the sound-absorbing cotton, is spaced from the inner surface and forms an annular cavity, and a plurality of openings are formed in the bulging portion, and the openings extend from the junction of the bulging portion and one of the fitting portions to the junction of the bulging portion and the other fitting portion and end, and the plurality of openings are evenly arranged along the circumferential direction of the tire.

[0008] In some embodiments, the width of the fitting portion is a, the maximum vertical distance between the bulging portion and the inner surface is H, the thickness of the sound-absorbing cotton is h, the width of the sound-absorbing cotton after being connected to the inner surface is L', and the unfolded width of the sound-absorbing cotton before being connected to the inner surface is L, and the following conditions are satisfied:

[0009] L 2 =(H - h) 2 +(1 / 2L' - a) 2 。

[0010] In some embodiments, the fitting portion extends continuously along the circumferential direction of the tire.

[0011] In some embodiments, the bulging portion extends continuously along the circumferential direction of the tire, and the openings are linear.

[0012] In some embodiments, the bulging portion extends continuously along the circumferential direction of the tire, the openings include two V-shaped gaps arranged at intervals, the vertices of the two V-shaped gaps are adjacent, and the two sides of the two V-shaped gaps extend in opposite directions.

[0013] In some embodiments, the width of the two V-shaped gaps is any value in the range of 0.2 - 0.4 mm.

[0014] In some embodiments, the bulging portion is composed of a plurality of tooth-shaped portions arranged evenly along the circumferential direction of the tire, and the openings are defined between adjacent two sets of the tooth-shaped portions.

[0015] In some embodiments, the tooth-shaped portion is composed of two trapezoidal members arranged oppositely left and right.

[0016] In some embodiments, the two trapezoidal members share the same upper base, or the two upper bases of the two trapezoidal members are spaced apart and disconnected.

[0017] In some of these embodiments, a wedge is formed between the vertices of the two V-shaped slits and between the upper base edges of the two trapezoidal members.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] The present invention provides a multifunctional sound-absorbing cotton tire. By providing an arched portion and opening a number of openings in the arched portion, better heat dissipation can be achieved; at the same time, the internal volume of the tire can be further reduced to achieve a better noise reduction effect; the center position of the tire crown can be left empty. When a non-self-repairing tire is punctured, the problem of difficult tearing of the cotton can be solved. After the cotton is removed, the cotton state can be partially restored. When a self-repairing tire is punctured, it can avoid affecting the repair effect after the self-repairing rubber compound flows due to the cotton sticking to the tire.

[0020] The present invention provides a multifunctional sound-absorbing cotton tire. A wedge is formed between the vertices of the two V-shaped slits and between the upper base edges of the two trapezoidal members. A plurality of wedges are arranged uniformly along the circumferential direction of the tire, which can absorb noise and reduce the internal volume of the tire at the same time, playing a good role in noise reduction.

[0021] The present invention provides a multifunctional sound-absorbing cotton tire. By defining that the arched portion is composed of a number of tooth-shaped portions arranged uniformly along the circumferential direction of the tire, and an opening is defined between adjacent two groups of tooth-shaped portions, while ensuring the heat dissipation, noise reduction and self-repairing capabilities of the tire, the usage amount of the sound-absorbing cotton is reduced, and the production cost is lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 is a schematic structural diagram of the multifunctional sound-absorbing cotton tire provided by the embodiment of the present invention;

[0024] Figure 2 is an unfolded schematic diagram of the sound-absorbing cotton with a linear opening before being connected to the inner surface provided by the embodiment of the present invention;

[0025] Figure 3 is a schematic structural diagram of the sound-absorbing cotton with a linear opening forming an arched portion after being connected to the inner surface provided by the embodiment of the present invention;

[0026] Figure 4 is an unfolded schematic diagram of the sound-absorbing cotton with two V-shaped slits before being connected to the inner surface provided by the embodiment of the present invention;

[0027] Figure 5Schematic diagram of the structure of the sound-absorbing cotton with two V-shaped slits as the opening, forming an arched part after being connected to the inner surface provided by the embodiment of the present invention;

[0028] Figure 6 Expansion diagram of the sound-absorbing cotton provided by the embodiment of the present invention, before the arched part composed of a number of tooth-shaped parts arranged evenly along the circumferential direction of the tire is connected to the inner surface;

[0029] Figure 7 Schematic diagram of the structure of the sound-absorbing cotton provided by the embodiment of the present invention, after the arched part composed of a number of tooth-shaped parts arranged evenly along the circumferential direction of the tire is connected to the inner surface, forming an arched part;

[0030] Figure 8 Another schematic diagram of the structure of the sound-absorbing cotton with a linear opening provided by the embodiment of the present invention, after being connected to the inner surface;

[0031] Figure 9 Another schematic diagram of the structure of the multi-functional sound-absorbing cotton tire provided by the embodiment of the present invention;

[0032] Description of the drawings: 1. Fitting part; 2. Arched part; 201. Tooth-shaped part; 3. Opening; 301. V-shaped slit; 4. Wedge; 5. Inner surface. Detailed implementation manners

[0033] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be described and explained below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0034] Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, the present invention can also be applied to other similar scenarios based on these drawings. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed by the present invention, some design, manufacturing or production changes based on the technical content disclosed by the present invention are only conventional technical means and should not be understood that the content disclosed by the present invention is insufficient.

[0035] References to "embodiments" in this invention mean that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the invention. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this invention can be combined with other embodiments without conflict.

[0036] Unless otherwise defined, the technical terms or scientific terms involved in this invention shall have the ordinary meaning understood by those of ordinary skill in the technical field to which this invention belongs. The words "a", "an", "one", "the" and similar words involved in this invention do not denote a limitation of quantity and can represent singular or plural. The terms "include", "comprise", "have" and any variations thereof involved in this invention are intended to cover non-exclusive inclusion; for example, a process, method, system, product or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may further include steps or units not listed, or may further include other steps or units inherent to these processes, methods, products or devices. The words "connect", "be connected", "couple" and similar words involved in this invention are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "plurality" involved in this invention means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after. The terms "first", "second", "third", etc. involved in this invention are only used to distinguish similar objects and do not represent a specific order for the objects.

[0037] An embodiment of the invention provides a multifunctional sound-absorbing cotton tire. Figures 1 - 7 FIG. is a schematic structural diagram of a multifunctional sound-absorbing cotton tire according to an embodiment of the invention. The multifunctional sound-absorbing cotton tire at least includes a tread portion and sound-absorbing cotton; the tread portion extends in the circumferential direction of the tire and forms an outer surface in contact with the ground and an inner surface 5 in contact with the air filled in the tire; the sound-absorbing cotton extends in the circumferential direction of the tire to form a ring and is connected to the inner surface 5, as Figure 1As shown in the figure, the sound-absorbing foam further includes a fitting portion 1 and a bulging portion 2; the fitting portion 1 is located on both sides of the sound-absorbing foam and is connected to the inner surface 5 through a fitting member; the bulging portion 2 is located between the fitting portions 1 on both sides of the sound-absorbing foam, is spaced from the inner surface 5 and forms an annular cavity, and a plurality of openings 3 are formed in the bulging portion 2. The openings 3 extend from the junction of the bulging portion 2 and the fitting portion 1 on one side to the junction of the bulging portion 2 and the fitting portion 1 on the other side and end. The plurality of openings 3 are evenly arranged along the circumferential direction of the tire. By providing the bulging portion 2 and forming a plurality of openings 3 in the bulging portion 2, the multifunctional sound-absorbing foam tire can achieve better heat dissipation; at the same time, the internal volume of the tire can be further reduced to achieve a better noise reduction effect; the center position of the tire crown can also be left empty. When the self-repairing tire is punctured, the problem of difficult tearing of the foam can be solved. After the foam is removed, the foam state can be partially restored. When the self-repairing tire is punctured, it can avoid affecting the repair effect after the self-repairing rubber compound flows due to the foam sticking to the tire. In addition, as Figure 8 As shown in the figure, the sound-absorbing foam may also include a fitting portion 1 and a non-fitting portion 1, that is, the sound-absorbing foam is a conventional sound-absorbing foam of normal size (flatly attached to the inside of the tire), and a gap is cut in the middle with a knife as the opening 3. This treatment can increase heat dissipation. At the same time, the middle part (i.e., the non-fitting portion 1) is not attached with glue, which can solve the problem of difficult tearing of the foam during puncture repair.

[0038] As Figure 9 shown in the figure, the width of the fitting portion 1 is a, the maximum vertical distance between the bulging portion 2 and the inner surface 5 is H, the thickness of the sound-absorbing foam is h, the width of the sound-absorbing foam after being connected to the inner surface 5 is L', and the unfolded width of the sound-absorbing foam before being connected to the inner surface 5 is L, satisfying the following conditions:

[0039] L 2 =(H - h) 2 +(1 / 2L' - a) 2 .

[0040] It should be noted that the width L' of the sound-absorbing foam after being connected to the inner surface 5 is the width of the existing sound-absorbing foam that is flatly attached to the inside of the tire. This embodiment specifically defines the calculation method of the unfolded width L of the sound-absorbing foam before being connected to the inner surface 5. Through this method, the production requirements of the sound-absorbing foam can be determined, which is convenient for guiding production and at the same time enables it to meet the requirements of the tire for heat dissipation, noise reduction and self-repairability.

[0041] To ensure the tight connection between the sound-absorbing foam and the inner surface 5 of the tread, the fitting portion 1 extends continuously along the circumferential direction of the tire. It should be noted that the fitting member in the above embodiment may be a component such as a tape used to connect various parts in the tire.

[0042] As Figure 2 、 3 shown in the figure, the bulging portion 2 extends continuously along the circumferential direction of the tire, and the opening 3 is linear. Among them, Figure 2It is a plan view of the sound-absorbing cotton when it is not attached to the inside of the tire. The gaps (i.e., opening 3) are several straight lines. Figure 3 As shown below, Figure 2 is a top view of the sound-absorbing cotton attached to the inside of the tire. After being attached to the inside of the tire, the gaps are arc-shaped, and the arched part 2 protrudes in an arched shape along the radial direction of the tire towards the inside of the tire. At this time, Figure 3 the gap (opening 3) spacing in Figure 2 is greater than the gap (opening 3) spacing in Figure 3 This can better dissipate heat. In addition, this design can further reduce the internal volume of the tire, achieving a better noise reduction effect. It can also leave the center position of the tire crown empty. When the self-repair tire is punctured, it can solve the problem of difficult cotton tearing. After the cotton is removed, it can partially return to the cotton state. When

[0043] As Figure 4 and 5 shown, the arched part 2 extends continuously along the circumferential direction of the tire. The opening 3 includes two V-shaped gaps 301 arranged at intervals. The vertices of the two V-shaped gaps 301 are adjacent, and the two sides of the two V-shaped gaps 301 extend in opposite directions. Among them, Figure 4 is a plan view of the sound-absorbing cotton when it is not attached to the inside of the tire. Figure 5 As shown below, it is a top view of the cotton in Figure 5 attached to the inside of the tire. After being attached to the inside of the tire, the gap (opening 3) is arc-shaped, and the arched part 2 protrudes in an arched shape along the radial direction of the tire towards the inside of the tire. At this time, Figure 4 the gap (opening 3) spacing in

[0044] As Figure 6 and 7 shown, the arched part 2 is composed of several tooth-shaped parts 201 arranged uniformly along the circumferential direction of the tire. The opening 3 is defined between adjacent two groups of tooth-shaped parts 201. Further, the tooth-shaped part 201 is composed of two trapezoidal parts arranged oppositely on the left and right; the two trapezoidal parts share the same upper base, or the two upper bases of the two trapezoidal parts are spaced apart and disconnected. The tires listed in the above embodiments can all meet the requirements of heat dissipation, noise reduction and self-repair. However, compared with the conventional sound-absorbing cotton, the width of the sound-absorbing cotton needs to be increased to achieve the effect of arching in the middle, which will inevitably increase the cost. This embodiment provides Figure 6 and 7The double-strip sound-absorbing cotton shown, specifically: it includes two serrated sound-absorbing cottons that are centrosymmetric. Figure 6 It is the planar development view of the double-strip sound-absorbing cotton when it is not attached to the inner part of the tire. Figure 7 As shown, about to Figure 6 The top view when the sound-absorbing cotton is attached to the inner part of the tire. The tooth-shaped parts 201 are connected in two parts on the left and right to form a wedge 4 (that is, the wedge 4 formed between the upper bottom edges of two trapezoidal parts), which absorbs noise and reduces the internal volume of the tire at the same time, reducing noise; the concave part (that is, the opening 3) has no cotton, and the two parts on the left and right form a blank area, greatly reducing the heat generated during tire driving, and can effectively reduce the noise generated by the flow of hot air. Whether there is self-repair in the tire or not, the repair after puncture is not affected by the sound-absorbing cotton. It can be understood that this-shaped sound-absorbing cotton can also be integrally processed into a single-strip sound-absorbing cotton.

[0045] Performance test

[0046] Conduct tests on the sound-absorbing cottons in the above three ways. When there is no self-repair, place the temperature sensor between the sound-absorbing cotton and the inner surface 5; when there is self-repair in the tire, place the temperature sensor between the self-repair and the sound-absorbing cotton. Set 2 groups of tests to test the noise reduction effect and heat dissipation degree of the sound-absorbing cottons in different ways. The results are shown in Tables 1 and 2.

[0047] Table 1 Test results (without self-repair)

[0048] Noise reduction structure Figure 8 The conventional cotton shown Figure 3 The structure shown Figure 5 The structure shown Figure 7 The structure shown Number of sound - absorbing foams 1 1 1 1 or 2 Noise effect S S - 2dB S - 3dB S - 5dB Internal temperature of the sound - absorbing foam t t-2℃ t-5℃ t-9℃ Whether it can be restored after removing the foam No Partially Partially Yes

[0049] Table 2 Test results (including self-repair)

[0050] Noise reduction structure Figure 8 The conventional cotton shown Figure 3 The structure shown Figure 5 The structure shown Figure 7 the structure shown Number of sound - absorbing foams 1 1 1 1 or 2 Noise effect s s - 2dB s - 4dB s - 5dB Internal temperature of the sound - absorbing foam T T-3℃ T-7℃ T-12℃ Whether it can be restored after removing the foam No Partially Partially Yes

[0051] From the above test results, it can be seen that regardless of whether there is self-repair glue or not, Figure 7 the heat dissipation effect of the structure shown is the best, and the noise reduction effect is also better than the previous two schemes; when there is self-repair, Figure 7 the heat dissipation effect of the structure shown is particularly obvious. Regardless of whether there is self-repair or not, when the tire is punctured, after removing the cotton from the structure shown, it can be restored. Figure 7

[0052] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0053] ​The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A multi-functional silent cotton tire, characterized in that, Comprising: A tread surface that extends circumferentially of the tire and forms an outer surface in contact with the ground, and an inner surface in contact with the air filled in the tire; A sound-absorbing sponge that extends circumferentially of the tire to form a ring and is connected to the inner surface, including: A fitting portion that is located on both sides of the sound-absorbing sponge and is connected to the inner surface through the fitting portion; An arched portion that is located between the fitting portions on both sides of the sound-absorbing sponge, is spaced from the inner surface and forms an annular cavity, and a plurality of openings are formed in the arched portion, and the openings extend from the junction of the arched portion and the fitting portion on one side to the junction of the arched portion and the fitting portion on the other side and end, and the plurality of openings are evenly arranged circumferentially of the tire; The arched portion is composed of a plurality of tooth-shaped portions that are evenly arranged circumferentially of the tire, and the openings are defined between adjacent two sets of the tooth-shaped portions; The tooth-shaped portion is composed of two trapezoidal members that are arranged opposite to each other left and right; The two upper bottom sides of the two trapezoidal members are spaced apart and disconnected; A wedge is formed between the upper bottom sides of the two trapezoidal members.

2. The multi-functional silent cotton tire according to claim 1, wherein The width of the fitting part is a, the maximum vertical distance between the arched part and the inner surface is H, the thickness of the sound-absorbing sponge is h, and the width after the sound-absorbing sponge is connected to the inner surface is L ， , the unfolded width of the sound-absorbing sponge before being connected to the inner surface is L, and the following conditions are satisfied: (0.5L - a) 2 = (H - h) 2 + (0.5L ， - a) 2 。 3. The multi-functional sound-absorbing cotton tire according to claim 1, wherein The fitting portion extends continuously circumferentially of the tire.

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