Self-sealing tire

Abstract

The utility model relates to the technical field of tires, in particular to a self-sealing tire. The self-sealing tire comprises a tire body and a self-sealing adhesive located on the inner periphery of the inner bottom wall of the tire body, the self-sealing adhesive is in a spiral shape coaxially distributed with the tire body, and the starting point and the end point of the self-sealing adhesive are located on the two sides of a light point of the tire body respectively. A reference surface is formed by the axial section of the tire main body where the light point is located, and a section of glue solution between the starting point and the reference surface and a section of glue solution between the end point and the reference surface jointly form a pair of extension counterweight parts, so that the purpose of dynamic balance is achieved. According to the utility model, on the basis of simplifying the process steps of the tire, the problems of dynamic balance light point and puncture leakage of the tire can be synchronously solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to tire technical field, concretely is a kind of self-sealing tire. BACKGROUND

[0002] Due to the rubber material characteristics of tire, it is easy to be punctured by sharp object in use, thereby causing the gas leakage in tire;Self-sealing tire is the tire that increases a layer of self-sealing material with special performance in the inner bottom wall of traditional tire, can realize the self-sealing of tire after being punctured.The coating of the self-sealing material is mostly as recorded in the text with the name of a kind of anti-puncture self-sealing tire extrusion coating equipment and its coating method of Chinese patent publication No.CN118810094A, place tire on transmission roller, and support column is extended to tire, aligns preset position;The coating assembly is driven into the tire by the support column adjustment frame;In the coating process, transmission roller drives the tire to rotate, and the coating assembly is directional coated to the inner surface of rotating tire, until the self-sealing material covers the entire inner surface of the tire, thereby forming self-sealing tire.Although the above-mentioned self-sealing tire can ensure the anti-puncture requirement, but a new problem is produced: due to the uneven quality distribution of existing tire in processing, often leads to "light point" (i.e.the position of the lightest weight on the circumference of tire) on tire;The existence of light point often leads to the tire centrifugal force that cannot be offset, can cause vehicle vibration, abnormal sound and other problems.The improvement of traditional light point problem is often solved by pasting weight piece at light point, which is recorded in the text with the name of a kind of wheel assembly process that adopts wheel rim and tire dynamic balance before point matching of Chinese patent publication No.CN110281713A.Obviously, once the inner wall of tire is coated with self-sealing material, it cannot be pasted later due to the influence of the peristalsis of material;And if pasting before coating, it undoubtedly increases the processing procedure of tire, thereby causing cost increase, and even can produce interference problem between production processes, additional disturbance to actual production process is produced.So, whether can develop a new type of tire structure, make sure that the tire process step is simplified, and has the anti-puncture effect and tire dynamic balance of tire. CONTENT OF UTILITY MODEL

[0003] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a kind of self-sealing tire, make sure that the tire process step is simplified, and has the anti-puncture effect and tire dynamic balance of tire.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A self-sealing tire comprises a tire body and a self-sealing glue located in the inner circumferential wall of the tire body, the self-sealing glue is in a spiral shape coaxial with the tire body, the starting point and the ending point of the self-sealing glue are located on the two sides of the light point of the tire body respectively, a reference plane is formed by the axial section of the tire body where the light point is located, a pair of extension counterweights are formed by the section of glue between the starting point and the reference plane and the section of glue between the ending point and the reference plane, and the extension counterweights are used for dynamic balance.

[0006] As a further scheme of the utility model, the length and width of the two extension counterweights are equal.

[0007] As a further scheme of the utility model, the inside of the tire body is arranged with a sound absorbing part.

[0008] As a further scheme of the utility model, the sound absorbing part is fixed with an elastic layer, and the sound absorbing part is fixed on the surface of the rim through the elastic layer in a clamping manner.

[0009] As a further scheme of the utility model, the elastic layer is an elastic rubber sleeve or an annular elastic rope.

[0010] As a further scheme of the utility model, the sound absorbing part is made of elastic material, and is tightly clamped on the two tire side parts of the tire body in an expanding manner; on the axial section of the tire body, the cross section of the sound absorbing part is in a shape matching the shape of the inner cavity of the tire body with the groove facing the direction of the axis of the tire body.

[0011] As a further scheme of the utility model, the maximum width of the sound absorbing part is 5% to 10% larger than the distance between the two tire side parts.

[0012] As a further scheme of the utility model, the sound absorbing part is a sound absorbing sponge.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] 1. In the spraying process of the self-sealing glue, a reference plane is formed by the axial section of the tire body where the light point is located, a pair of extension counterweights are formed by the section of glue between the starting point and the reference plane and the section of glue between the ending point and the reference plane, the weight of the light point is increased by the extension counterweights, the dynamic balance of the light point is achieved, the problems of dynamic balance of the light point and puncture leakage are solved, the inherent complex process shackles of the traditional pasting of the counterweight block are abandoned, the process steps are simplified, and the interference between the coating of the self-sealing glue and the pasting of the configuration block is eliminated.

[0015] 2. The inside of the tire body is arranged with a sound absorbing part, and the noise reduction effect of the tire body is improved.

[0016] 3, the elastic layer is clamped and positioned on the outer surface of the rim, which makes the fixed sound absorption part on it also be positioned and fixed at the same time, discards the traditional fixed mode of only relying on the self-sealing glue and the sound absorption part, and uses the double fixed mode of the self-sealing glue and the elastic layer, so that the position deviation of the sound absorption part in the use process of the tire body is effectively prevented when the adhesion between the self-sealing glue and the sound absorption part is insufficient.

[0017] 4, in order to further prevent the position deviation of the sound absorption part in the use process of the tire body, the sound absorption part is made of elastic material, so as to be tightly expanded on the two tire side parts of the tire body; on the axial section of the tire body, the cross section shape of the sound absorption part matches the shape of the inner cavity of the tire body with the self-sealing glue, and the flared slot is towards the axial direction of the tire body, forming a stable assembly state of the sound absorption part. Due to the centrifugal force, the two outer groove walls of the flared slot shaped sound absorption part will also be further improved due to the cooperation with the inclined surface of the inner wall of the tire body, the adhesion of the sound absorption part to the inner wall of the tire body is further improved, the safety can be further improved, especially in high speed driving, due to the centrifugal force, the reliability of the sound absorption part can be further improved, and will not fall off. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure of the utility model is shown in the figure.

[0019] Figure 2 The structure of the utility model is shown in the figure.

[0020] Figure 3 The structure of the utility model is shown in the figure.

[0021] In the figure: 10, tire body; 20, sound absorption part; 30, self-sealing glue; 31, extension counterweight part; 40, elastic layer; a, light point. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] For the convenience of understanding, the specific structure and working mode of the utility model are further described below in combination with the drawings:

[0024] The specific structure of the utility model is referred to Figures 1-3As shown, the main structure thereof includes a tire body 10 and a self-sealing glue 30 located at the inner circumferential wall of the inner bottom wall of the tire body 10. The inner cavity of the tire body 10 is regarded as a ring-shaped groove with a notch facing inward, and the inner circumferential wall of the inner bottom wall of the tire body 10 is the inner circumferential wall of the groove bottom of the ring-shaped groove. The self-sealing glue 30 is coaxially distributed in a spiral shape with the tire body 10, and the starting point and the ending point of the self-sealing glue 30 are located on the two sides of the light point a of the tire body 10 respectively. The axial section of the tire body 10 where the light point a is located is taken as a reference surface, and a section of glue between the starting point and the reference surface and a section of glue between the ending point and the reference surface jointly form a pair of extended counterweights 31 to achieve the purpose of dynamic balance. In the present application, the spiral structure of the self-sealing glue 30 makes the self-sealing glue 30 uniformly distributed on the inner bottom wall of the tire body 10, thereby reducing the adverse effects of the self-sealing glue 30 on the uniformity of the dynamic balance of the tire body 10. In addition, the axial section of the tire body 10 where the light point a is located is taken as a reference surface, and a section of glue between the starting point and the reference surface and a section of glue between the ending point and the reference surface jointly form a pair of extended counterweights 31 to increase the counterweight at the light point a, thereby achieving the purpose of dynamic balance and synchronously solving the problem of tire dynamic balance light point and the problem of puncture leakage.

[0025] The light point a in the present application is not simply a point on the tire body 10, but a linear region parallel to the reference surface of the inner bottom wall of the tire body 10 at the light point a. In actual implementation, the glue spraying operation of the self-sealing glue 30 is as follows: first, find the light point a on the tire body 10 by dynamic balance test and mark it, and then make the glue gun located on the front side of the light point a along the spiral direction of the self-sealing glue 30, so that the position corresponding to the glue gun at this time is taken as the starting point of the self-sealing glue 30. When the spiral self-sealing glue 30 is about to be sprayed, the glue head is located at the light point a, and then the glue head is continuously located on the rear side of the light point a, and the final position of the glue gun is taken as the ending point of the self-sealing glue 30. Obviously, the layout mode of the spiral self-sealing glue 30 not only enables the self-sealing glue 30 to achieve the purpose of dynamic balance, but also has the advantage of convenient glue spraying.

[0026] On the basis of the above, Figure 3 As shown, the length and width of the two extended counterweights 31 are equal, which ensures the consistency of the counterweights on the two sides of the light point a. In actual implementation, the length and width of the extended counterweight 31 are related to the counterweight required at the light point a, the material density of the extended counterweight 31, the cross-sectional width of the extended counterweight 31 sprayed by the glue gun, etc., so that the weight of the extended counterweight 31 is equal to the counterweight required at the light point a.

[0027] On the basis of the above, Figure 2 As shown, the inner part of the tire body 10 is arranged with a sound absorption part 20, which improves the noise reduction effect of the tire body 10.

[0028] In addition, asFigure 2 As shown, an elastic layer 40 is fixed to the sound-absorbing part 20, and the sound-absorbing part 20 is clamped to the rim surface by the elastic layer 40. By clamping and positioning the sound-absorbing part 20 on the outer surface of the rim by the elastic layer 40, the sound-absorbing part 20 is also simultaneously positioned and fixed. This abandons the traditional method of fixing the sound-absorbing part 20 solely by the self-sealing adhesive 30. By using the double fixing method of the self-sealing adhesive 30 and the elastic layer 40, it effectively prevents the sound-absorbing part 20 from deviating from its position during use when the adhesion between the self-sealing adhesive 30 and the sound-absorbing part 20 is insufficient.

[0029] In practice, since the sound-absorbing part 20 and the elastic layer 40 are fixed to each other, in actual implementation, it is only necessary for the elastic layer 40 to have a stable clamping with the rim surface. Therefore, the elastic layer 40 can be located on the inner or outer side of the sound-absorbing part 20.

[0030] Specifically, such as Figure 2 As shown, the elastic layer 40 can be an elastic rubber sleeve or a ring-shaped telescopic rope, as long as it achieves a clamping effect on the outer surface of the rim.

[0031] In addition, such as Figure 2 As shown, to further prevent the sound-absorbing part 20 from shifting position during use, the sound-absorbing part 20 is made of an elastic material, thus expanding and pressing against the two sidewalls of the tire body 10. In the axial section of the tire body 10, the cross-sectional shape of the sound-absorbing part 20 matches the inner cavity shape of the tire body 10 with self-sealing adhesive 30, and the groove is an flared groove facing the axial direction of the tire body 10. This allows the sound-absorbing part 20 to reliably press against the two sidewalls of the tire body 10 with sufficient mating area during actual assembly, forming a stable assembly state. At high speeds, due to centrifugal force, the two outer groove walls of the flared sound-absorbing part 20 will further enhance the adhesion between the sound-absorbing part 20 and the inner wall of the tire body 10 by engaging with the inclined surface of the inner wall of the tire body 10, further improving safety. Especially at high speeds, due to centrifugal force, the reliability of the sound-absorbing part 20 is further enhanced, and it will not detach. In addition, since the sound-absorbing part 20 needs to be tightly fitted to the two sides of the tire body 10, the overall volume of the sound-absorbing part 20 is relatively large, and obviously the area for absorbing noise is also large, and the overall sound absorption effect is better than that of ordinary silent tires.

[0032] Preferred, such as Figure 2 As shown, the maximum width of the sound-absorbing part 20 is 5% to 10% larger than the distance between the two tire sides.

[0033] It is worth mentioning that in the above two fixing modes of the sound absorbing part 20, one is that the sound absorbing part 20 is fixed on the rim by the elastic layer 40, and the other is that the sound absorbing part 20 is tightly fixed on the two sidewall parts of the tire body 10 by the elasticity of the sound absorbing part 20 itself, and the two fixing modes do not interfere with each other, and in actual implementation, one of the two fixing modes or both of the two fixing modes can be used.

[0034] Further, the sound absorbing part 20 can be implemented in various ways, such as using sound absorbing rubber or other sound absorbing structures, such as a porous plate body. The application preferably uses sound absorbing sponge material to form the sound absorbing part 20, which can ensure the installation and use requirements of high cost performance.

[0035] Of course, for those skilled in the art, the present application is not limited to the details of the above exemplary embodiments, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0036] In addition, it should be understood that although the present application is described in the form of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0037] The technical, shape and structure parts not described in detail in the present application are known technologies.

Claims

1. A self-sealing tire characterized in that, The tire body (10) and the self-sealing glue (30) located in the inner wall of the tire body (10) inner wall, the self-sealing glue (30) is coaxial with the tire body (10) distribution of spiral, the starting point and the end point of the self-sealing glue (30) are located on both sides of the light point (a) of the tire body (10); the tire body (10) axial section where the light point (a) is located constitutes the reference surface, the starting point and the reference surface between a section of glue liquid, and the end point and the reference surface between a section of glue liquid jointly constitute a pair of extension counterweight (31), to play the purpose of dynamic balance.

2. A self-sealing tire according to claim 1, wherein, The length and width of the two extension counterweight (31) are equal.

3. A self-sealing tyre according to any one of claims 1-2, characterised in that, The tire body (10) is internally arranged with sound absorbing part (20).

4. A self-sealing tyre according to claim 3, characterised in that, The elastic layer (40) is fixed on the sound absorbing part (20), and the sound absorbing part (20) is fixed on the surface of the rim by the elastic layer (40) in a clamping manner.

5. A self-sealing tire according to claim 4, wherein, The elastic layer (40) is an elastic rubber sleeve or an annular elastic rope.

6. A self-sealing tire according to claim 3, wherein, The sound absorbing part (20) is made of elastic material, so as to be tightly clamped on both tire side portions of the tire body (10); on the axial section of the tire body (10), the cross section shape of the sound absorbing part (20) matches the inner cavity shape of the tire body (10) with the self-sealing glue (30), and the slot is in the shape of an expanded slot with the opening direction towards the axis direction of the tire body (10).

7. A self-sealing tire according to claim 6, wherein, The maximum width of the sound absorbing part (20) is 5%-10% larger than the distance between the two tire side portions.

8. A self-sealing tire according to claim 3, wherein, The sound absorbing part (20) is a sound absorbing sponge.

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