TWM502585U - Airless tire, wheels and bicycle - Google Patents

Description

Free pneumatic tires, wheels and bicycles

The present invention relates to the field of tire technology, and in particular to an airless tire, a wheel and a bicycle.

In recent years, in order to alleviate urban traffic congestion and environmental protection issues, urban public bicycle transportation projects have been successively implemented in many cities in China. Due to the high turnover rate of urban public bicycle riders, the frequency of use is high and the failure rate is high. Especially for the traditional pneumatic tires, the thinner carcass often causes problems such as air leakage, puncture, unstable tire pressure and easy puncture. Therefore, the short service life of the tire and high maintenance cost are common problems for urban public bicycles. .

As shown in FIG. 1, the carcass 11 has a full solid structure, which has defects such as large weight, large driving resistance, and poor shock absorption.

In order to solve the above technical problems, the present invention provides an airless tire, a wheel and a bicycle, which can reduce the weight of the tire, reduce the driving resistance, enhance the earthquake resistance and improve the user's comfort.

The first aspect of the present invention provides an airless tire, comprising: a carcass, a central hole is disposed at an intermediate position of the carcass, and the carcass is provided with a plurality of bead holes, wherein the bead hole is The outer surface of the tire is recessed inwardly.

Preferably, the bead hole has a stepped cross section.

Preferably, the bead hole has a first aperture at an outer periphery of the tire and a second aperture adjacent the central aperture, the first aperture being larger than the second aperture.

Preferably, the first aperture is from 1/5 to 1/3 of the total height of the carcass.

Preferably, the carcass is annular, and the bead holes are uniformly distributed in an annular shape on the carcass to form 2 to 4 ring bead holes.

Preferably, two adjacent bead holes in the adjacent two ring bead holes are spaced apart from each other.

Preferably, the radius of the central hole is 1/8 to 1/4 of the width of the cross section of the carcass.

Preferably, the total depth of the bead hole is 1/5 to 1/3 of the width of the cross section of the carcass.

Preferably, the carcass includes an upper portion for grounding and a lower portion for supporting the load, the upper portion of which is made of a rubber material having superior wear performance, and the lower portion of which is made of a rubber material having good rigidity and excellent impact resistance.

A second aspect of the present invention provides a wheel comprising a tire support ring and the tire described above, the tire being mounted on the tire support ring.

A third aspect of the present invention provides a bicycle comprising the above-described wheel.

The advantages of the present invention compared to the prior art are:

The airless tire, the wheel and the bicycle of the present invention have the following advantages over the existing solid carcass by the addition of the central hole and the bead hole while maintaining the thickness of the carcass:

Firstly, through the addition of the center hole and the bead hole, the carcass is partially hollow, thereby reducing the weight of the tire of the hollow portion, thereby reducing the weight of the tire, alleviating the cumbersome feeling and reducing the driving resistance;

Secondly, through the addition of the center hole and the bead hole, the center hole and the bead hole will be deformed when the tire is subjected to an external force, thereby buffering the effect of the partial external force, and the vehicle body has a good shock absorption and shock resistance effect. Can improve the comfort of the rider;

Thirdly, through the addition of the center hole and the bead hole, part of the raw materials are saved, and the manufacturing cost is reduced.

The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the present invention but are not intended to limit the scope of the present invention.

Embodiment 1 As shown in FIG. 2, the present embodiment provides an airless tire including a carcass 1 with a center hole 2 at an intermediate position of the carcass 1. The carcass 1 has a ring shape, and the center hole 2 is also annular, and the ring formed by the carcass 1 is a concentric ring.

The design of the center hole 2 does not change the thickness of the inflating carcass 1, but the carcass 1 is changed from the solid carcass 1 to the partially hollow carcass 1, thereby reducing the weight of the hollow portion of the carcass 1 and relieving the carcass 1 The cumbersome feeling reduces the driving resistance; at the same time, during the driving process, when the carcass 1 encounters uneven road surface, the central hole 2 can alleviate part of the impact by deformation, thereby enhancing the shock absorption and shock resistance of the carcass 1. Make the rider more comfortable.

As shown in FIG. 2 and FIG. 3 (FIG. 4), the carcass 1 is further provided with a bead hole 3 which is formed by recessing the outer surface of the carcass 1 inward.

Through the design of the bead hole 3, the weight of the carcass 1 and the ability to improve shock absorption and shock resistance are again reduced, and the cost is again reduced.

The first aperture L0 of the bead hole 3 at the outer edge of the carcass 1 is larger than the second aperture L1 of the bead hole 3 adjacent to the center hole 2.

The bead hole 3 adopts the above structure, which can facilitate the removal of the carcass 1 from the mold after molding, which is convenient for the production; and at the same time, because the outer diameter of the bead hole 3 is small and small, the center hole 2 located at the middle position of the carcass 1 is matched. The hollow structure of the carcass 1 is relatively uniformly distributed throughout, so that the strength parameters such as toughness and rigidity of the carcass 1 remain relatively uniform.

As shown in Fig. 4, according to the present embodiment, the hole diameter of the bead hole 3 is required, and the cross-sectional shape of the bead hole 3 is stepped. The stepped bead hole 3 may include a first hole 22 and a second hole 21 that are connected. The bead hole 3 is arranged in a stepped shape, and the shape is relatively regular, which facilitates the production of the mold.

In a specific implementation process, the aperture of the bead hole 3 may also be gradually reduced or flattened from the outer surface of the bead to the middle, and the cross section of the bead hole 3 may be circular or trapezoidal. .

A plurality of bead holes 3 are uniformly distributed in an annular shape along the carcass 1 on the carcass 1, forming 2 to 4 turns of the bead holes 3.

In the present embodiment, the bead holes 3 are evenly distributed on the carcass 1 in an annular shape, so that the bead body 3 has a uniform distribution of the bead holes 3, and the overall stability and strength of the carcass 1 are maintained. Consistency. Here, it is uniformly distributed in a ring shape, and it can be understood that the two bead holes 3 in the same ring are equally spaced or angularly distributed in the center of the ring.

In addition, in the embodiment, the bead hole 3 is defined as 2 to 4 turns, such as 3 turns; the carcass 1 can be kept free from inflation and strength, and the weight and driving resistance of the carcass 1 can be reduced as much as possible. Limiting the shock absorption and shock resistance.

As shown in FIG. 3, the adjacent two bead holes 3 of the adjacent two bead holes 3 are spaced apart from each other. The bead hole 3 located in the first ring and the bead hole 3 in the second ring are in different sections of the carcass 1; the center of the bead hole 3 of the first ring is connected with the toroid to form a first straight line, the second ring The center of the bead hole 3 adjacent to the bead hole 3 is connected to the ring center to form a second straight line; the first straight line and the second straight line do not coincide.

As shown in Fig. 2, the radius of the center hole 2 is R, the width of the cross section of the carcass 1 is SW, and R is 1/8 SW to 1/4 SW.

The total depth of the bead hole 3 is W, the width of the cross section of the carcass 1 is SW, and the value of W/SW is 1/5 to 1/3.

The first aperture L0 of the bead hole 3 is a total height L of the carcass of 1/5 to 1/3.

Using at least one of the above three sets of parameters, the carcass 1 produced can achieve the purpose of weight reduction well, and can avoid the hole diameter of the center hole 2 is too large, the depth of the bead hole 3 is too large or the range of distribution is unreasonable. The rigidity is greatly reduced, and the problem of crack damage is prone to occur.

The carcass 1 includes an upper portion 10 and a lower portion 20; the thickness is the distance of the two points furthest from the upper portion 10 and the lower portion 20.

The pneumatic tire can be made of a single rubber. In order to further improve the performance of the tire, the carcass 1 of the present embodiment is divided into an upper portion 10 and a lower portion 20; the upper portion 10 and the lower portion 20 are made of two different glues. Made of materials. The upper portion 10 for grounding is set as a rubber with superior wear performance, and the lower portion 20 for supporting load is provided with a good rigidity and a rubber having excellent impact resistance, so that wear resistance is better, while maintaining good rigidity.

Embodiment 2: This embodiment provides a wheel including a tire support ring and a tire mounted on the tire support ring. The tire is the tire of the first embodiment.

The wheel adopts the tire described in the first embodiment, and has the same advantages of good shock absorbing performance, high comfort, no difficulty in driving, and low tire cost.

Embodiment 3: This embodiment provides a bicycle, which includes the wheel of the second embodiment.

The bicycle adopts the wheel described in the second embodiment, and has the same advantages of good shock absorption performance, high comfort, no difficulty in driving, and low cost.

The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of the novel technology. It should also be considered as the scope of protection of this new type.

<existing>
11‧‧‧Carcass <This new type>
1‧‧‧Carcass
2‧‧‧ center hole
3‧‧‧ sidewall hole
10‧‧‧上上
20‧‧‧ lower part
21‧‧‧ second hole
22‧‧‧ first hole
R‧‧‧ Radius
SW‧‧‧Width
W‧‧‧ total depth
L‧‧‧ total height
L0‧‧‧first aperture
L1‧‧‧second aperture

1 is a schematic cross-sectional view of a conventional carcass. 2 is a schematic cross-sectional view of the present carcass. Figure 3 is a plan view of the bead. Figure 4 is a schematic cross-sectional view of a bead hole.

1‧‧‧Carcass

2‧‧‧ center hole

3‧‧‧ sidewall hole

10‧‧‧上上

20‧‧‧ lower part

R‧‧‧ Radius

SW‧‧‧Width

L‧‧‧ total height

Claims (11)

An airless tire, comprising: a carcass, wherein a central hole is disposed at an intermediate position of the carcass, and the carcass is provided with a plurality of bead holes, wherein the bead hole is an outer surface of the tire body The inner depression is formed. The pneumatic tire according to claim 1, characterized in that the cross section of the bead hole is stepped. The pneumatic tire according to claim 2, wherein the bead hole has a first hole at an outer periphery of the tire and a second hole adjacent to the center hole, the first hole being larger than The second aperture. The pneumatic tire according to claim 3, characterized in that the first aperture is 1/5 to 1/3 of the total height of the carcass. The pneumatic tire according to claim 1, wherein the carcass is annular, and the bead hole is uniformly distributed in an annular shape on the carcass to form a bead hole of 2 to 4 turns. The pneumatic tire according to claim 1, characterized in that two adjacent bead holes of the two adjacent bead holes are spaced apart from each other. The pneumatic tire according to claim 1, characterized in that the radius of the center hole is 1/8 to 1/4 of the width of the cross section of the carcass. The pneumatic tire according to claim 1, characterized in that the total depth of the bead hole is 1/5 to 1/3 of the width of the cross section of the carcass. The pneumatic tire according to claim 1, wherein the carcass includes an upper portion for grounding and a lower portion for supporting the load, and the upper portion is made of a rubber material having superior wear performance, The lower part is made of a rubber with good rigidity and excellent impact resistance. A wheel characterized by comprising a tire support ring and the pneumatic tire according to any one of claims 1 to 9, the pneumatic tire being mounted on the tire support ring. A bicycle characterized in that the bicycle comprises a wheel as claimed in claim 10.