TW202246073A - Bicycle tire with enhanced gas retaining function avoids high pressure inflated bicycle tires from easily bleeding air using uniform thickness rubber structure to provide better gas retention effect - Google Patents

Abstract

A bicycle tire with enhanced gas retaining function is configured to form a tire inner wall at an inner surface of a tire body of a bicycle. A gas retaining layer is attached and combined with the tire inner wall. The gas retaining layer has a grid cell-like support material and a gas retaining rubber body cladded to the grid cell-like support material. The thickness of the gas retaining rubber body is larger than or equals to the thickness of the grid cell-like support material. The gas retaining rubber body of the gas retaining layer is supported by the grid cell-like support material to form an uniformly thickness structure so that the bicycle tire has better gas retention effect through the gas retaining layer combined to the tire inner wall. It can retain gas pressure within the inner tire at a higher state for a long time while in use.

Description

Bicycle tire with enhanced air retention function

The invention relates to a structure of a bicycle tire, in particular to a bicycle tire with enhanced air retention function.

Existing bicycle tires are used to reduce friction when rolling, so high-pressure gas is injected into the bicycle tire. In order to avoid the problem of insufficient tire pressure caused by internal gas leakage when riding a bicycle, a sealing layer is usually formed on the inner wall of the tire. , improve the overall airtight effect of bicycle tires.

However, since the inner wall of the bicycle tire has a structure such as a rough surface and a plurality of stripes, when the sealing layer is formed on the inner wall of the tire, there will be a problem of uneven thickness. The uneven thickness of the sealing layer will make the overall airtight effect of the bicycle tire not good, and the airtightness of the bicycle tire is not as good as expected. It needs to be improved so that the bicycle tire can maintain a higher gas pressure in the tire for a long time.

Because the thickness of the sealant rubber layer of the existing bicycle tire is uneven, the problem of poor effect of retaining gas in the bicycle tire occurs. For this reason, the present invention utilizes the structure of the grid-shaped support material coated with colloid, which is attached to the inner wall of the tire to achieve the effect of uniform thickness and good air retention effect.

In order to achieve the purpose of the above invention, the present invention provides a bicycle tire with enhanced air retention function, including:

A tire body having a tread portion, two belly portions connected to both sides of the tread portion, and two bead portions respectively connected to the end of each belly portion, forming an inner wall on the inner side of the tire body; and

An air-retaining layer, which is attached to the inner wall of the tire and has a grid-like support material and an air-retaining colloid covering the grid-like support material. The thickness of the air-retaining colloid is greater than or equal to that of the grid-like support material The thickness of the material.

Further, the coverage of the air-retaining layer in the present invention includes the tread portion, the belly of the two tires and the inside of the lips of the two tires.

The air-retaining layer of the present invention is in the shape of a grid support material supporting the air-retaining colloid, so that after the bicycle tire is rolled and vulcanized, the air-retaining colloid can be kept at a thickness greater than or equal to the grid The thickness of the support material and the overall thickness is uniform. The air-retaining layer attached to the inner wall of the tire can provide a better air-retaining effect with a colloidal structure with uniform thickness, avoiding the problem of high-pressure inflated bicycle tires that are prone to deflation after being placed, and achieving the effect of good air-retaining effect.

In order to illustrate the present invention more clearly, preferred embodiments are given and detailed descriptions are given below in conjunction with drawings. Please refer to Fig. 1 to Fig. 3, which is a bicycle tire 100 with enhanced air retaining function according to a preferred embodiment of the present invention, comprising a tire body 10 and an air retaining layer 20 attached to the tire body 10, wherein:

The tire body 10 has a tread portion 12, two belly portions 14 connected to both sides of the tread portion 12, and two bead portions 16 respectively connected to the ends of the belly portions 14. The tire inner wall 18 is located inside the tread portion 12 , the belly portion 14 and the bead portion 16 .

The air-retaining layer 20 is attached to the tire inner wall 18 and has a grid-like support material 22 and an air-retaining colloid 24 coated on the grid-like support material 22. The thickness of the air-retaining colloid 24 is greater than or It is equal to the thickness of the grid support material 22 . Preferably, the coverage of the air retaining layer 20 includes the inner sides of the tread portion 12 , the two belly portions 14 and the two bead portions 16 .

The above-mentioned tire body 10 of the present invention is a rubber tire structure. When the air-retaining layer 20 and the tire body 10 are rolled to form a green tire, the grid-like support material 22 and the air-retaining colloid 24 are attached to the tire in sequence. The tire inner wall 18 of the tire body 10 (the grid-shaped support material 22 and the air-retaining glue 24 can also be combined and attached to the tire inner wall 18 in advance by a cover glue machine), and then in the process of green tire vulcanization , so that the gas-retaining colloid 24 is coated on the grid-like support material 22 to form the gas-retaining layer 20, since the gas-retaining colloid 24 is supported by the grid-like support material 22, the gas-retaining colloid 24 is in the process of vulcanization It can maintain a uniform thickness and adhere to the inner wall 18 of the tire to provide a better air-retaining effect. After the bicycle tire 100 is formed, the air-retaining layer 20 with uniform thickness and good air-retaining effect can avoid the tire body 10 The high-pressure gas inside leaks.

To further illustrate the detailed structure of the above-mentioned preferred embodiment related to the air-retaining layer 20, the grid-shaped support material 22 can be selected from cord fabric, nylon cloth, rayon cloth, Kevlar cloth, liquid crystal fiber cloth, carbon fiber cloth, glass fiber cloth, etc. Cloth or cotton cloth, and includes a plurality of warp yarns 221 and a plurality of weft yarns 222 that are criss-crossed; the warp and weft density (wpi*fpi, wpi: the number of warps per inch, fpi: The number of weft yarns) is more than 20*20 and less than 100*100; preferably, the warp and weft density of the grid support material 22 is 50*50. The air-retaining colloid 24 is a rubber structure with a density greater than that of the tire body 10, the thickness of the air-retaining colloid 24 is more than 0.1mm and less than 0.5mm, and the thickness of the grid support material 22 is more than 0.1mm and 0.5mm. the following.

The above description is only a preferred feasible embodiment of the present invention, and all equivalent changes made by applying the description of the present invention and the scope of the patent application should be included in the scope of the patent of the present invention.

[this invention] 100: bicycle tire 10: tire body 12: Tread 14: fetal abdomen 16: fetal lip 18: tire inner wall 20: Air barrier 22: grid support material 221: warp 222: weft yarn 24: gas retaining colloid

Fig. 1 is a schematic cross-sectional view of a preferred embodiment of the present invention combined with a wheel frame. Fig. 2 is a schematic three-dimensional cross-sectional view of a preferred embodiment of the present invention. Fig. 3 is an enlarged schematic diagram of the circled area in Fig. 2 of a preferred embodiment of the present invention.

100: bicycle tire

10: tire body

12: Tread

14: fetal abdomen

16: fetal lip

18: tire inner wall

20: Air barrier

Claims (6)

A bicycle tire with enhanced air retention function, comprising: A tire body having a tread portion, two belly portions connected to both sides of the tread portion, and two bead portions respectively connected to the end of each belly portion, forming an inner wall on the inner side of the tire body; and An air-retaining layer, which is attached to the inner wall of the tire and has a grid-like support material and an air-retaining colloid covering the grid-like support material. The thickness of the air-retaining colloid is greater than or equal to that of the grid-like support material The thickness of the material. The bicycle tire with enhanced air-retaining function as described in claim 1, wherein the coverage of the air-retaining layer includes the tread portion, the abdomen of the two tires, and the inner sides of the lips of the two tires. The bicycle tire with enhanced air retention function as described in claim 1 or 2, wherein the grid support material includes multiple warp yarns and multiple weft yarns interlaced in a criss-cross pattern, and the warp and weft density of the grid support material is 20*20 Above, below 100*100. The bicycle tire with enhanced air retention function as described in claim 3, wherein the grid support material is cord fabric, nylon cloth, rayon cloth, Kevlar cloth, liquid crystal fiber cloth, carbon fiber cloth, glass fiber cloth or cotton. The bicycle tire with enhanced air-retaining function as described in claim 1 or 2, wherein the thickness of the air-retaining colloid ranges from 0.1mm to 0.5mm, and the thickness of the grid support material ranges from 0.1mm to 0.5mm the following. The bicycle tire with enhanced air-retaining function as described in claim 3, wherein the thickness of the air-retaining colloid ranges from 0.1 mm to 0.5 mm, and the thickness of the grid support material ranges from 0.1 mm to 0.5 mm.

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