CN215360798U

CN215360798U - Bicycle tire structure

Info

Publication number: CN215360798U
Application number: CN202121702377.3U
Authority: CN
Inventors: 严永知; 王东龙
Original assignee: Cheng Shin Rubber Xiamen Ind Ltd
Current assignee: Cheng Shin Rubber Xiamen Ind Ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2021-12-31
Anticipated expiration: 2031-07-26

Abstract

The utility model discloses a bicycle tire structure, which comprises a tire body, a tire body and a tire body, wherein the tire body comprises a tire tread; two tire beads; at least one layer of screen; crown stab-resistant yarns; two sides of the yarn are provided with anti-stabbing yarns; and two films. According to the utility model, the crown anti-stab yarns and the two sides anti-stab yarns cover the outer surface of the curtain yarn layer, an elastic space is reserved between two adjacent end points of the side anti-stab yarns and the crown anti-stab yarns, and the anti-stab yarns can provide stronger carcass strength, so that the anti-stab performance of the crown part and the two sidewall parts of the tire can be enhanced, and the cutting resistance of the lip part of the tire can also be enhanced; meanwhile, the elastic space can effectively prevent the whole tire body from being too stiff, ensure the tire body to have flexibility and normal deformation and ensure the cross-country performance to be good; simultaneously, two films on the surface of the bead part at the lower end of the anti-stabbing yarn on two sides can enable the bead part to be tightly attached to a rim, and the air-protecting effect of the bead part is effectively improved.

Description

Bicycle tire structure

Technical Field

The utility model relates to the technical field of mountain cross-country quasi-vacuum tires, in particular to a bicycle tire structure.

Background

Mountain cross-country is the sport item that many bicycle riders liked, and mountain cross-country's riding environment is complicated abominable, and the influence factor is many, so its requirement to bicycle tire is to have good puncture resistance, cut resistance, cross-country performance. Because the structure of the quasi-vacuum tire is greatly improved in recent years, the outer surface of the sidewall of the conventional mountain cross-country bicycle tire is generally not covered by rubber, the flexibility of the sidewall is kept, and the weight is reduced, so that the mountain cross-country performance is good, but because the mountain cross-country terrain is relatively severe, the crown and the sidewall of the tire are easy to puncture, and the cord layer of the tire bead is also easy to cut, so that the tire is leaked or damaged, and cannot be ridden normally.

As shown in fig. 1, the conventional mountain cross-country bicycle tire on the market is improved by adding a layer of anti-prick yarn 4 'on the periphery of a cord layer 3' of a tire body 10 ', wherein the anti-prick yarn 4' extends from a bead position on one side of the tire to a bead position on the other side of the tire. Although the completely wrapped structure can protect the tire body in all directions and greatly enhance the puncture resistance of each part of the tire, the tire is too stiff and cannot deform normally, so that the off-road performance is greatly reduced; in addition, the air retention performance of the tire lip part of the existing quasi-vacuum tire structure is not good, and improvement is needed.

Therefore, there is a need in the market to develop an improved structure of a bicycle tire suitable for mountain and off-road use, which is expected to have the advantages of puncture resistance, cutting resistance, off-road performance and air retention effect.

In view of the above, the present inventors have made extensive studies and studies to develop and design the present invention in view of the above-mentioned deficiencies and inconveniences caused by the perfection of the bicycle tire structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bicycle tire structure.

In order to achieve the above purpose, the solution of the utility model is:

a bicycle tire structure, the bicycle tire includes a carcass having a crown portion, two shoulder portions, two sidewall portions and two bead portions, the carcass including a tread; two tire beads; the two ends of the cord yarn layer respectively wind around the two tire beads to be folded back and then are stopped at the bottom of the central position of the tire tread to form a symmetrical overlapping shape; the crown anti-stab yarns surround the outer surface of the curtain yarn layer and extend from the tire crown part to the two ends to be close to the two tire shoulder parts respectively; the lateral anti-prick yarns surround the outer surface of the curtain yarn layer and extend upwards from the tire bead part to enter the tire shoulder part, and an elastic space is reserved between two adjacent end points of the lateral anti-prick yarns and the crown anti-prick yarns; and the two rubber sheets are respectively attached to the surfaces of the tire lips at the lower ends of the two sides of the anti-stabbing yarns.

The tyre body further comprises two anti-friction layers, the two anti-friction layers are respectively attached to tyre lip portions at two ends of the outer surface of the curtain yarn layer, and one end of the side stab-resistant yarn covers the anti-friction layers.

The crown stab-resistant yarn and the side stab-resistant yarn are both made of composite materials with adhesive coated on the surfaces of the reticular interwoven fabrics.

The rubber sheet is made of rubber material with air retention function, and the thickness of the rubber sheet is 0.3mm-0.8 mm.

The tyre body is only provided with a cord fabric layer

The carcass is provided with two cord yarn layers: the tire tread comprises an inner curtain yarn layer and an outer curtain yarn layer, wherein two ends of the inner curtain yarn layer respectively wind around two tire beads to turn back and then are stopped at the bottom of the center of the tire tread to form a symmetrical overlapped shape, and two ends of the outer curtain yarn layer respectively wind around two ends of the bottom of the inner curtain yarn layer to turn back and then are stopped at the bottom of a tire shoulder part.

The outer curtain yarn layer and the side stab-resistant yarns are staggered at two end points of the tire shoulder part.

After the scheme is adopted, the crown anti-stab yarns and the two side anti-stab yarns cover the outer surface of the curtain yarn layer, the three anti-stab yarns are not overlapped, namely, an elastic space is reserved between two adjacent end points of the side anti-stab yarns and the crown anti-stab yarns, the anti-stab yarns can provide stronger carcass strength, the anti-stab performance of the crown part and the two sidewall parts of the tire can be enhanced, and the cutting resistance of the lip part of the tire can also be enhanced; meanwhile, the elastic space can effectively prevent the whole tire body from being too stiff, ensure the tire body to have flexibility and normal deformation and ensure the cross-country performance to be good; meanwhile, the two rubber sheets positioned on the surfaces of the lower tire lip parts of the anti-stabbing yarns on the two sides can further enhance the cutting resistance of the tire lip parts, and meanwhile, the tire lip parts can be attached to the rim more closely, so that the air retention effect of the tire lip parts is effectively improved; therefore, the bicycle tire has the advantages of puncture resistance, cutting resistance, off-road performance and air retention effect.

Drawings

FIG. 1 is a cross-sectional view of a conventional mountain cross-country bicycle tire;

FIG. 2 is a cross-sectional view of a first embodiment of the present invention;

fig. 3 is a cross-sectional view of a second embodiment of the present invention.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Referring to fig. 2, a first embodiment of a bicycle tire structure of the present invention includes a carcass 10, wherein one skilled in the art has given common nomenclature to various locations on the carcass 10, the carcass 10 having a crown portion 101, shoulder portions 102, side portions 103 and lip portions 104, and in the present invention, the carcass 10 includes a tread 1; two tire beads 2; two ends of the cord layer 3 respectively wind around the two tire beads 2 and are folded back to be stopped at the bottom of the central position of the tire tread 1 and form a symmetrical overlapping shape; the crown anti-stab yarns 4 are wound on the outer surface of the cord layer 3, and extend from the tire crown part 101 to the two ends to be close to the two tire shoulder parts 102 respectively; the two sides of the side stab-resistant yarns 5 surround the outer surface of the curtain layer 3, extend upwards from the tire bead part 104 to enter the tire shoulder part 102, and an elastic space 6 is reserved between two adjacent end points of the side stab-resistant yarns 5 and the crown stab-resistant yarns 4; and two rubber sheets 7, wherein the two rubber sheets 7 are respectively attached to the surfaces of the lower tire bead parts 104 of the two sides of the stab-resistant yarns 5.

The utility model is characterized in that the crown stab-resistant yarns 4 and the two side stab-resistant yarns 5 are covered on the outer surface of the cord layer 3, the three stab-resistant yarns are not overlapped, namely, an elastic space 6 is reserved between two adjacent end points of the side stab-resistant yarns 5 and the crown stab-resistant yarns 4, the stab-resistant yarns can provide stronger carcass 10 strength, and the stab-resistant performance of the crown part 101 and the two sidewall parts 103 and the cutting resistance of the bead part 104 can be enhanced; meanwhile, the elastic space 6 can effectively prevent the whole tire body 10 from being too stiff, ensure the tire body 10 to have flexibility and normal deformation and ensure good off-road performance; meanwhile, the two rubber sheets 7 positioned on the surface of the bead part 104 at the lower end of the stab-resistant yarns 5 on the two sides can further enhance the cutting resistance of the bead part 104, and meanwhile, the bead part 104 can be attached to a rim more closely, so that the air-retention effect of the bead part 104 is effectively improved; therefore, the bicycle tire has the advantages of puncture resistance, cutting resistance, off-road performance and air retention effect.

The tyre body 10 further comprises two anti-friction layers 8, the two anti-friction layers 8 are respectively attached to tyre lip portions 104 arranged at two ends of the outer surface of the curtain layer 3, and one end of the side stab-resistant yarn 5 covers the anti-friction layers 8. Both the film 7 and the side stab-resistant yarns 5 may be cut or worn during use, and at this time, the film 7 and the side stab-resistant yarns 5 lose the protective effect on the screen layer 3, so that the screen layer 3 of the bead part 104 can be further protected from being cut by the anti-friction layer.

The crown stab-resistant yarn 4 and the side stab-resistant yarn 5 are both made of composite materials coated with glue on the surfaces of the reticular interwoven fabrics.

The rubber sheet 7 is made of rubber material with air retention function, and the thickness of the rubber sheet is 0.3mm-0.8 mm. The rubber sheet 7 made of rubber material with the air-retaining function not only can enable the tire lip part 104 to be attached to a rim more tightly, but also can effectively improve the cutting resistance and the air-retaining effect of the tire lip part 104.

As shown in fig. 3, a second embodiment of a bicycle tire structure of the present invention is different from the first embodiment in that, in the present embodiment, a carcass 10 is provided with two layers of cords 3: the tire tread comprises an inner curtain yarn layer 31 and an outer curtain yarn layer 32, wherein two ends of the inner curtain yarn layer 31 respectively wind around two tire beads 2 to be folded back and then are terminated at the bottom of the central position of the tire tread 1 to form a symmetrical overlapped shape, and two ends of the outer curtain yarn layer 32 respectively wind around two ends of the bottom of the inner curtain yarn layer 31 to be folded back and then are terminated at the bottom of a tire shoulder part 102. The carcass 10 in the first embodiment is provided with only one cord layer 3, and the tire weight can be reduced while the strength of the carcass 10 is ensured; the carcass 10 in the second embodiment is provided with two layers of cords 3, which enables the tire to have a stronger carcass 10 strength; therefore, a manufacturer can consider the strength of the tire body 10 and the weight of the tire according to the actual requirements of users, and select one curtain yarn layer 3, two curtain yarn layers 3 or more curtain yarn layers 3, so that the requirements of the users in different use environments are met, and the market competitiveness is further improved.

The outer ply 32 and the side stab-resistant yarn 5 are offset from each other at both ends of the shoulder portion 102. Thereby avoiding stress concentration and making the structure of the carcass 10 more firm and stable.

The foregoing description of specific exemplary embodiments of the utility model has been presented for the purposes of illustration and description and is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the utility model and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the utility model and various alternatives and modifications as may be appropriate to those skilled in the art without departing from the scope of the utility model.

Claims

1. A bicycle tire structure, the bicycle tire including a carcass having a crown portion, two shoulder portions, two sidewall portions and two bead portions, characterized in that: the carcass comprises

A tread;

two tire beads;

the two ends of the cord yarn layer respectively wind around the two tire beads to be folded back and then are stopped at the bottom of the central position of the tire tread to form a symmetrical overlapping shape;

the crown anti-stab yarns surround the outer surface of the curtain yarn layer and extend from the tire crown part to the two ends to be close to the two tire shoulder parts respectively;

the lateral anti-prick yarns surround the outer surface of the curtain yarn layer and extend upwards from the tire bead part to enter the tire shoulder part, and an elastic space is reserved between two adjacent end points of the lateral anti-prick yarns and the crown anti-prick yarns;

and the two rubber sheets are respectively attached to the surfaces of the tire lips at the lower ends of the two sides of the anti-stabbing yarns.

2. A bicycle tire structure as in claim 1, wherein: the tyre body further comprises two anti-friction layers, the two anti-friction layers are respectively attached to tyre lip portions at two ends of the outer surface of the curtain yarn layer, and one end of the side stab-resistant yarn covers the anti-friction layers.

3. A bicycle tire structure as in claim 1, wherein: the crown stab-resistant yarn and the side stab-resistant yarn are both made of composite materials with adhesive coated on the surfaces of the reticular interwoven fabrics.

4. A bicycle tire structure as in claim 1, wherein: the rubber sheet is made of rubber material with air retention function, and the thickness of the rubber sheet is 0.3mm-0.8 mm.

5. A bicycle tire structure as in claim 1, wherein: the carcass is provided with only one cord layer.

6. A bicycle tire structure as in claim 1, wherein: the carcass is provided with two cord yarn layers: the tire tread comprises an inner curtain yarn layer and an outer curtain yarn layer, wherein two ends of the inner curtain yarn layer respectively wind around two tire beads to turn back and then are stopped at the bottom of the center of the tire tread to form a symmetrical overlapped shape, and two ends of the outer curtain yarn layer respectively wind around two ends of the bottom of the inner curtain yarn layer to turn back and then are stopped at the bottom of a tire shoulder part.

7. A bicycle tire structure as in claim 6, wherein: the outer curtain yarn layer and the side stab-resistant yarns are staggered at two end points of the tire shoulder part.