CN203974414U - Non-inflatable tyre, wheel and bicycle - Google Patents

Abstract

The utility model discloses a kind of non-inflatable tyre, wheel and bicycle, for solve in prior art tire too heavy, cause the problems such as the large and comfort level of car resistance is not good to design.Described non-inflatable tyre, comprises carcass; Midway location at described carcass is provided with centre hole; On carcass, be also provided with tyre bead hole; Described tyre bead hole is caved inward and is formed groove and form by described carcass outside face; Have shock-absorbing performance good, traveling comfort is high, driving leicht fallen D/A, and lower-cost advantage.

Description

Free air tires, wheels and bicycles

technical field

The utility model relates to the technical field of machinery, in particular to an air-free tire, a wheel and a bicycle.

Background technique

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 my country. Due to the large turnover rate of urban public bicycle riders, the high frequency of use, and the high incidence of failures. In particular, the supporting traditional pneumatic tires, whose carcass is thin, often have problems such as air leakage, tire blowout, unstable tire pressure, and easy puncture. Therefore, the tires have a short service life and high maintenance costs are common problems faced by urban public bicycles. . At this time, non-inflatable tires with strong and thick carcass and no risk of tire blowout are applied to some urban public bicycles.

As shown in FIG. 1 , it is a cross-sectional view of the carcass of an existing tire, which is a solid carcass 11 , which has problems such as large weight, high driving resistance and poor shock absorption.

Utility model content

In order to solve the above technical problems, the utility model provides an air-free tire, wheel and bicycle, which can reduce tire weight, reduce driving resistance, enhance shock resistance and improve user comfort. the

The first aspect of the utility model provides a non-pneumatic tire. The non-pneumatic tire includes a carcass; a central hole is provided in the middle of the carcass.

Preferably, the carcass is also provided with bead holes;

The bead hole is formed by inwardly indenting the outer surface of the carcass to form a groove.

Preferably,

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

Preferably,

The cross-sectional shape of the bead hole is stepped.

Preferably,

The total height of the carcass is L; the L is 1/5 to 1/3 of the L.

Preferably,

The carcass is annular;

A plurality of the bead holes are evenly distributed in a circular shape along the carcass on the carcass, forming 2 to 4 circles of bead holes.

Preferably,

Two adjacent bead holes of two adjacent circles of bead holes are distributed at intervals.

Preferably,

The radius of the central hole is R;

The width of the cross-section of the carcass is SW;

Wherein, the R is 1/8~1/4 of the SW.

Preferably,

The total depth of the sidewall holes parallel to the carcass cross-section is W;

The width of the cross-section of the carcass is SW;

The value of W/SW is 1/5~1/3.

The second aspect of the utility model provides a wheel, including a tire support ring and a tire mounted on the tire support ring;

The tire is the tire as described in any one of the above.

The third aspect of the present invention provides a bicycle, which includes the above-mentioned tire.

Compared with the prior art, the beneficial effects of the utility model are:

Compared with the existing solid carcass, the non-inflatable tire, wheel and bicycle described in the utility model have the following advantages through the added center hole and bead hole under the condition that the thickness of the carcass remains unchanged:

First of all, through the addition of the center hole and the bead hole, the carcass is partially hollow, thereby reducing the weight of the tire in the hollow part, thereby reducing the weight of the tire, relieving the bulkiness and reducing the driving resistance;

Secondly, through the addition of the central hole and the bead hole, when the tire is subjected to external force, the central hole and the bead hole will be deformed, thereby buffering part of the external force, and it has a good shock absorption and anti-seismic effect when used on the car body. Can improve the comfort of passengers;

Thirdly, through the addition of the central hole and the bead hole, part of the production materials is saved and the production cost is reduced.

Description of drawings

Fig. 1 is a schematic cross-sectional view of an existing carcass;

Fig. 2 is a schematic cross-sectional view of the carcass described in the embodiment of the present invention;

Fig. 3 is a schematic surface view of the tire bead described in Fig. 2;

FIG. 4 is a schematic cross-sectional view of the bead hole shown in FIG. 2 .

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

Embodiment one:

As shown in FIG. 2 to FIG. 4 , this embodiment provides a non-pneumatic tire, the non-pneumatic tire includes a carcass 1 ; a central hole 2 is provided in the middle of the carcass 1 . The carcass is annular; the central hole 2 is also annular, and the ring formed with the carcass is a concentric ring.

The design of the central hole 2 does not change the thickness of the non-inflatable carcass, but makes the carcass change from a solid carcass to a partially hollow carcass, thereby reducing the weight of the hollow part of the carcass and reducing the bulkiness of the carcass , reducing the driving resistance; at the same time, in the process of driving, when the carcass encounters uneven roads, the central hole can relieve part of the impact through deformation, thereby enhancing the shock absorption and shock resistance of the carcass, making the passengers more comfortable .

Further, the carcass 1 is also provided with bead holes 3;

The bead hole 3 is formed by indenting the outer surface of the carcass 1 to form a groove.

This embodiment further reduces the weight of the carcass and improves the ability of shock absorption and shock resistance through the design of the bead hole 3 , and reduces the cost again.

The first aperture L0 of the bead hole 3 outside the carcass 1 is larger than the second aperture L1 of the bead hole adjacent to the central hole 2 .

The bead hole 3 adopts the above-mentioned structure, which can facilitate the carcass 1 to be taken out from the mold after forming, which facilitates the production; at the same time, because the bead hole 3 has a diameter that is large on the outside and small on the inside, it cooperates with the center hole 2 located in the middle of the carcass, so that The hollow structure of the carcass is relatively evenly distributed everywhere, so that the strength parameters of the carcass, such as toughness and rigidity, remain relatively consistent.

As shown in FIG. 4 , according to the diameter requirements of the bead hole 3 in this embodiment, the cross-sectional shape of the bead hole is stepped. The stepped bead hole may include a connected first hole 22 and a second hole 21 . The bead hole 3 is set to have a stepped cross-section, and the shape is relatively regular, which is convenient for making the mold.

In a specific implementation process, the aperture of the bead hole 3 may gradually decrease or gradually decrease from the outer surface of the bead to the middle, and the specific cross-section of the bead hole 3 may be circular, Shapes such as trapezoids.

Further, the first diameter L0 of the bead hole is set to be 1/5-1/3 of the total bead height L.

The carcass 1 is annular;

Several bead holes 3 are evenly distributed in a circular shape along the carcass 1 on the carcass 1 , forming 2 to 4 circles of bead holes.

In this embodiment, the bead holes 3 are evenly distributed on the carcass 1 in a ring shape, so that the bead holes 3 can be evenly distributed everywhere in the carcass, and the overall stability of the carcass and the consistency of strength everywhere can be maintained. sex. Here, the uniform distribution in a ring shape can be understood as the equal spacing between the two bead holes in the same circle or the distribution at equal angles at the apex in the center of the ring.

In addition, in this embodiment, the bead hole is limited to 2 to 4 circles, such as 3 circles; while keeping the carcass free from inflation and strength, it can also reduce the weight of the carcass and driving resistance as much as possible, and maximize the Shock absorption and shock resistance.

As shown in Figure 3,

Two adjacent bead holes of two adjacent circles of bead holes are spaced apart from each other.

The bead hole in the first circle and the bead hole in the second circle are in different sections of the carcass; the center of the bead hole in the first circle is connected with the ring center to form a straight line A, and the second circle is adjacent to the bead hole The center of the bead hole and the ring center are connected to form a straight line B; the straight line A and the straight line B do not coincide. As shown in Figure 2, the radius of the central hole is R;

The width of the cross-section of the carcass is SW;

Wherein, the R is 1/8~1/4 of the SW.

further,

The bead holes are parallel, and the total depth of the carcass cross section is W;

The width of the cross-section of the carcass is SW;

The value of W/SW is 1/5~1/3.

Going a step further,

The first aperture L0 of the bead hole is set to be 1/5-1/3 of the total bead height L.

The carcass comprises an upper part 10 and a lower part 20 ; the thickness is the distance between two points farthest between the upper part 10 and the lower part 20 .

Using at least one of the above three sets of parameters, the manufactured carcass can achieve the purpose of weight reduction well, and can avoid the rigidity caused by excessive center hole diameter, excessive bead hole depth or unreasonable distribution range It is greatly reduced, and the problem of crack damage is prone to occur.

In addition, in order to further improve the performance of the tire, the carcass described in this embodiment is divided into an upper part 10 and a lower part 20; the upper part 10 and the lower part 20 are made of different rubber materials. The upper part 10 used for grounding is set with a rubber material with superior wear performance, while the lower part 20 bearing the supporting load is set with a rubber material with good rigidity and excellent impact resistance. The sizing material for making the upper part is selected from a sizing material with better wear resistance than the existing carcass making sizing material. Compared with the carcass formed by one kind of rubber material in the prior art, it has better wear resistance and maintains good rigidity at the same time.

Embodiment two:

This embodiment provides a wheel, including a tire support ring and a tire installed on the tire support ring;

The tire is the tire described in any technical solution of the embodiment.

The carcass described in the first embodiment is used for the wheel, which also has the advantages of good shock absorption performance, high comfort, easy driving, and low tire cost.

Embodiment three:

This embodiment provides a bicycle, and the bicycle includes the tire as described in the second embodiment.

The bicycle adopts the carcass described in the first embodiment and the wheel described in the second embodiment, which also has the advantages of good shock absorption performance, high comfort, easy driving, and low cost.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and modifications can also be made. And modification should also be regarded as the protection scope of the present utility model.

Claims (10)

1. a non-inflatable tyre, is characterized in that, described non-inflatable tyre comprises carcass; Midway location at described carcass is provided with centre hole;

On described carcass, be also provided with tyre bead hole;

Described tyre bead hole is caved inward and is formed groove and form by described carcass outside face.

2. non-inflatable tyre according to claim 1, is characterized in that,

The first aperture L0 of described tyre bead hole at place, described carcass outside is greater than the second aperture L1 of the contiguous described central hole in described tyre bead hole.

3. non-inflatable tyre according to claim 2, is characterized in that,

The cross sectional shape in described tyre bead hole is stepped.

4. non-inflatable tyre according to claim 2, is characterized in that,

The bottom-to-top-height of carcass is L; Described L0 is 1/5 ~ 1/3 described L.

5. non-inflatable tyre according to claim 1, is characterized in that,

Described carcass in the form of a ring;

Described in several, tyre bead hole is uniformly distributed in the form of a ring along described carcass on described carcass, forms 2 to 4 circle tyre bead holes.

6. non-inflatable tyre as claimed in claim 5, is characterized in that,

Two adjacent described tyre bead spans in two adjacent rings tyre bead hole distribute.

7. non-inflatable tyre according to claim 1, is characterized in that,

The radius of described centre hole is R;

The width of the cross-sectional plane of described carcass is SW;

Wherein, described R is SW described in 1/8 ~ 1/4.

8. non-inflatable tyre according to claim 1, is characterized in that,

The total depth of the parallel described carcass cross-sectional plane in described tyre bead hole is W;

The width of the cross-sectional plane of described carcass is SW;

The value of described W/SW is 1/5 ~ 1/3.

9. a wheel, is characterized in that, comprises tire bracing ring and is arranged on the tire on described tire bracing ring;

Described tire is the tire described in claim 1 to 8 any one.

10. a bicycle, is characterized in that, described bicycle comprises tire as claimed in claim 9.