CN115230400A

CN115230400A - Non-pneumatic tire

Info

Publication number: CN115230400A
Application number: CN202211014199.4A
Authority: CN
Inventors: 刘晓玉; 朱亮亮; 徐婷
Original assignee: Ji Hua Laboratory
Current assignee: Ji Hua Laboratory
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2022-10-25

Abstract

The utility model relates to the technical field of tires, especially, relate to a non-pneumatic tire, including tread, belted layer, supporting component, wheel hub and spoke are connected, and supporting component connects on wheel hub, and the belted layer is established along supporting component's outer peripheral edge cover, and the tread covers and establishes on the belted layer. The supporting component is an elastic part and comprises two supporting bodies which are symmetrically arranged. The supporter has the radian, along the radial of tire and from inside to outside, the interval of two supporters diminishes and grow again, or the interval of two supporters diminishes and grows. Through the aforesaid setting, bear the in-process of deformation at the tire, along with the increase of load, the area of contact of two supporters can be bigger and bigger, and the deformation zone of supporter can be expanded along the radial both sides of tire gradually by the area of contact of two supporters moreover, and the supporter can slowly warp and produce mutual support, mutual antagonism can make rigidity not reduce along with the increase of deformation, is favorable to the lightweight and the performance promotion of tire.

Description

Non-pneumatic tire

Technical Field

The present disclosure relates to tire technology, and more particularly to a non-pneumatic tire.

Background

Pneumatic tires are widely used in vehicles and other equipment requiring movement due to their mature manufacturing technology and superior performance characteristics. The pneumatic tire adopts rubber and sealed compressed air of rim to realize the support to the child hat, consequently the operating mode such as the tire pressure is not enough, the tire is punctured gas leakage and flat child by the object probably appears in the use. Therefore, the non-pneumatic tire is produced at the same time, and the non-pneumatic tire generally adopts the support body to replace compressed air in the pneumatic tire to realize the support of the tire crown, so that the problems of insufficient tire pressure, puncture, tire burst and the like which can occur in the pneumatic tire can be effectively avoided.

The tire art generally defines the ratio of tire load to corresponding deflection as radial stiffness. The pneumatic tire needs to maintain the airtightness of the inside and provide a load by maintaining a certain pressure. And as the load increases, the temperature increases, etc., the internal pressure also increases. The pneumatic tire has a better load to radial deflection ratio, i.e., radial stiffness linearity, and even for some tires, the radial stiffness increases as the load increases.

However, for a non-pneumatic tire, because the support body provides support, as the deformation of the support body increases, problems of buckling deformation, structural instability, or material softening gradually occur, and the load-bearing performance is reduced. Such non-linearity in load carrying performance can lead to tire failure, poor handling, etc. under heavy loads.

Disclosure of Invention

In order to solve the above technical problem, the present disclosure provides a non-pneumatic tire.

The utility model provides a non-pneumatic tire, which comprises a tire tread, a belted layer, a support component, a hub and a spoke, wherein the hub is connected with the spoke;

the supporting component is an elastic piece and comprises two supporting bodies which are symmetrically arranged;

the support bodies have radians, and the distance between the two support bodies is gradually reduced and then increased along the radial direction of the tire from inside to outside;

or the distance between the two supporting bodies is changed from small to big along the radial direction of the tire and from inside to outside.

Optionally, the support body comprises a support body, two ends of the support body are respectively connected with an outer connecting part and an inner connecting part, the outer connecting part is connected to the belted layer, and the inner connecting part is connected to the hub.

Optionally, the material of the support body is a composite of an elastomeric material and reinforcing fibers.

Alternatively, the number of the support assemblies is one, the support assemblies extend in the circumferential direction of the tire, and the two support bodies are symmetrically arranged along the tire equatorial plane.

Alternatively, the support assembly is provided in plurality, the plurality of support assemblies being uniformly distributed in the axial direction of the tire, and each support assembly extending in the circumferential direction of the tire.

Optionally, the support assemblies are provided in plurality, the support assemblies are uniformly distributed along the circumferential direction of the tire, and the two support bodies are symmetrically arranged along the radial plane of the tire.

Optionally, a connector is arranged at the minimum distance between the two supports, the connector connects the two supports, and the material of the connector is an elastomer material.

Optionally, the connector is a split structure.

Optionally, the support further comprises two auxiliary support portions, and the two auxiliary support portions are symmetrically arranged along the symmetry plane of the support body;

the first end of the auxiliary supporting part is connected with the supporting main body, and the second end of the auxiliary supporting part is connected with the belted layer.

Optionally, the auxiliary support portion has an arc, and the auxiliary support portion and the support body located on the same side of the symmetry plane of the support body have opposite bending directions.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the utility model provides a non-pneumatic tire, including tread, belted layer, supporting component, wheel hub and spoke are connected, and supporting component connects on wheel hub, and the belted layer is established along supporting component's outer peripheral edge cover, and the tread covers and establishes on the belted layer. The supporting component is an elastic piece and comprises two supporting bodies which are symmetrically arranged. The supporter has the radian, along the radial of tire and from inside to outside, the interval of two supporters diminishes and grow again, or the interval of two supporters diminishes and grows. Through the aforesaid setting, bear the in-process of deformation at the tire, along with the increase of load, the area of contact of two supporters can be bigger and bigger, and the deformation zone of supporter can be expanded gradually by the area of contact of two supporters along the radial direction of tire moreover, and the supporter can slowly warp and produce mutual support, mutual antagonism can make rigidity not reduce along with the increase of deformation, is favorable to the lightweight and the performance promotion of tire.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is an overall block diagram of a first, second, third and fourth embodiment non-pneumatic tire of the present disclosure;

FIG. 2 is an elevational view of a non-pneumatic tire of the first, second, third and fourth embodiments of the present disclosure;

FIG. 3 is a cross-sectional view of a non-pneumatic tire in a first embodiment of the present disclosure;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a cross-sectional view of yet another non-pneumatic tire in accordance with a first embodiment of the present disclosure;

FIG. 6 is a graph of the relationship between deflection and radial load for a first embodiment tire of the present disclosure;

FIG. 7 is a cross-sectional view of a non-pneumatic tire according to a second embodiment of the present disclosure;

FIG. 8 is a schematic view of a third embodiment of a connector according to the present disclosure;

FIG. 9 is a cross-sectional view of a non-pneumatic tire according to a fourth embodiment of the present disclosure;

FIG. 10 is an enlarged view of a portion of FIG. 9;

FIG. 11 is an overall structural view of a non-pneumatic tire according to a fifth embodiment of the present disclosure;

fig. 12 is a structural view of a support according to a fifth embodiment of the present disclosure.

Wherein, 1, tread; 2. a belt ply; 3. a support assembly; 30. a support body; 31. a support body; 32. an outer connecting portion; 33. an inner connection portion; 34. a linker; 35. an auxiliary support portion; 4. a hub; 5. a spoke.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

First embodiment

The present disclosure provides a non-pneumatic tire, as shown in fig. 1 and 2, including tread 1, belted layer 2, support component 3, wheel hub 4 and spoke 5, wheel hub 4 is connected with spoke 5, and support component 3 connects on wheel hub 4, and belted layer 2 establishes along the outer peripheral cover of support component 3, and tread 1 covers and establishes on belted layer 2. Alternatively, the hub 4 and the spokes 5 may be of one-piece construction or may be mechanically connected. The radially inner side of the support member 3 is fixedly connected to the radially outer side of the hub 4. The radially inner side of the belt layer 2 is fixedly connected to the radially outer side of the support assembly 3. The tread 1 is provided with a pattern on its outer surface, which ensures the frictional properties of the tire.

As shown in fig. 3 and 4, the supporting member 3 is an elastic member, and the supporting member 3 includes two symmetrically disposed supporting bodies 30, or the two supporting bodies 30 are approximately symmetrical to each other, so as to function as the present embodiment. The supporting bodies 30 have a radian, the two supporting bodies 30 are symmetrically arranged along the equatorial plane of the tire, and the distance between the two supporting bodies 30 is gradually reduced and then increased from inside to outside along the radial direction of the tire, and the cross section of the supporting component 3 is similar to an hourglass shape, or alternatively, as shown in fig. 5, the distance between the two supporting bodies 30 is gradually reduced and increased from inside to outside along the radial direction of the tire, and the distance between the two supporting bodies 30 at the position in contact with the hub 4 is minimum, and the cross section of the supporting component 3 is similar to a funnel shape.

It should be noted that the following description is based on the principle that the pitch of the supporting bodies 30 is changed from large to small, and the principle that the pitch of the supporting bodies 30 is changed from small to large is similar, and will not be described again. The size of the minimum gap between the two supports 30 is dependent upon the load carrying properties and the cushioning requirements of the non-pneumatic tire. In the above embodiment, the minimum distance between the two support bodies 30 is less than 1/5 of the axial width of the tire. For heavy duty tires, the gap between the support members 30 is preferably 0, and the two support members 30 will contact at the middle position in the initial state or after a small amount of force is applied, so as to improve the relative support effect. For the tire with light load and high buffering and vibration damping performance, a larger gap can be set.

During the deformation of the tire, the contact area of the two supporting bodies 30 is larger and larger as the load is increased, and the deformation area of the supporting assembly 3 is gradually expanded along the radial two sides of the tire from the contact area of the two supporting bodies 30. Therefore, the deformation mode of the support body 30 is relatively stable with the increase of the load, and the support bodies 30 are gradually deformed to support each other, and are mutually antagonistic, so that the rigidity can be prevented from being reduced with the increase of the deformation. To verify this conclusion, a simulation test was conducted on a computer, and fig. 6 is a graph showing the relationship between radial rundown and radial load of a tire model, and it can be seen from fig. 6 that the graph is substantially linear. In addition, the support component 3 in the embodiment extends along the circumferential direction of the tire, so that when the tire bears the load, the deformation of the support component 3 is not only limited to the grounding area of the tire, but also can extend to the non-grounding area of the tire, so that all the support components 3 bear the load together, and the light weight and the performance improvement of the tire are facilitated.

As shown in fig. 4, the supporting body 30 includes a supporting body 31, two ends of the supporting body 31 are respectively connected to an outer connecting portion 32 and an inner connecting portion 33, the outer connecting portion 32 and the inner connecting portion 33 are approximately trapezoidal, the length of the upper base of the trapezoid is the same as the cross-sectional width of the supporting body 31, and the length of the lower base of the trapezoid is greater than the length of the upper base of the trapezoid. The outer connecting portion 32 is intended to be connected to the belt 2 and the inner connecting portion 33 is intended to be connected to the hub 4, i.e. the lower base of the trapezoid is connected to the belt 2 or the hub 4. The provision of the outer coupling portion 32 and the inner coupling portion 33 enables to increase the contact area of the support assembly 3 with the belt layer 2 and/or the hub 4, so as to increase the radial support capacity and the structural stability of the support assembly 3.

With particular regard to the material arrangement, the material of the support body 31 is a composite of an elastomeric material and reinforcing fibers. The elastomer is internally provided with reinforcing fibers which extend continuously in the radial direction of the support body 31 or at an angle of less than 60 ° to the radial direction. To improve the structural strength, fatigue performance, load-bearing capacity, etc. of the support assembly 3. The reinforcing fibers may be arranged in one or more layers within the elastomeric material or in one or more layers on the surface of the elastomeric material. The elastic material is preferably a high polymer material with modulus not lower than 5MPa, such as certain rubber and polyurethane with high modulus and low endogenous heat, resin with good weather resistance and the like. The reinforcing fiber is preferably a fiber having a certain flexural rigidity, such as a low-modulus carbon fiber or a combination thereof with a resin, a metal fiber or a combination of a metal fiber and a resin, a combination of a glass fiber and a resin, a PET fiber, a polyester fiber, a nylon fiber, an aramid fiber, a hollow pipe, and the like. The support member 3 may also be a composite rigid plastic material, or a fiber reinforced plastic, such as a PA6 continuous reinforced fiber reinforced nylon material.

In addition, the material of the outer connecting portion 32 and the inner connecting portion 33 is an elastomer material. To simplify the process, the same elastomeric material as the support body 31 may be chosen. It is also possible to select an elastomer material having a lower modulus than that of the material of the support body 31 to enhance the deformation and cushioning ability and to enable the grounding characteristics to be improved.

The material of the belt layer 2 is also defined in this embodiment, the belt layer 2 is also a composite material of an elastomer material and reinforcing fibers, and the reinforcing fibers are arranged in the elastomer material along the circumferential direction of the tire or form an angle of less than 90 ° with the circumferential direction, and may be provided in a plurality of layers, for example, 5 layers.

In the belt ply 2, the volume proportion of the reinforcing fibers in the belt ply 2 is 30-85%, the integral strength of the belt ply 2 can be ensured, and the position and the structural stability of the reinforcing fibers in the belt ply 2 can be ensured.

Second embodiment

The present embodiment provides a non-pneumatic tire that is substantially the same as the non-pneumatic tire of the first embodiment, except that:

in the present embodiment, on the basis of the structure of the first embodiment, the plurality of support assemblies 3 are provided, the plurality of support assemblies 3 are uniformly distributed along the axial direction of the tire, and each support assembly 3 extends along the circumferential direction of the tire, as shown in fig. 7, the structure is shown when the number of support assemblies 3 is two, and the two support assemblies 3 work together, so that the radial support capability and the structural stability of the tire can be improved to a greater extent.

Third embodiment

in this embodiment, on the basis of the structure of the first embodiment, as shown in fig. 8, a connecting body 34 is provided at the minimum distance between two supporting bodies 30, the two supporting bodies 30 are connected by the connecting body 34, and the material of the connecting body 34 is an elastomer material. By providing the connecting body 34, the contact stability of the support unit 3 in the natural state and the initial stage of the load can be further improved.

Optionally, the connecting body 34 is a split structure. The connecting body 34 may be divided into left and right portions, which are connected to the support member 3 at a minimum gap, respectively. When the supporting component 3 is pressed and contacted, the left and right connecting bodies 34 can generate deformation in two directions at the contact part, and compared with an integral structure, the deformation of the connecting bodies 34 is larger, and a more reliable buffering effect can be achieved.

In particular, the connection means of the connecting body 34 to the support body 31 is an adhesive.

Fourth embodiment

in this embodiment, on the basis of the structure of the first embodiment, as shown in fig. 9 and 10, the support body further includes two auxiliary support portions 35, and the two auxiliary support portions 35 are symmetrically arranged along the symmetry plane of the support body 30. The auxiliary support portion 35 has a curvature, and the auxiliary support portion 35 and the support body 30 are bent in opposite directions on the same side of the symmetrical plane of the support body 30. The first end of the auxiliary support 35 is connected with the support body 31 and tangent to the extending direction of the support body 31, the second end of the auxiliary support 35 is connected with the belt layer 2 to further improve the radial support capability of the tire, and the arrangement of the auxiliary support 35 can increase the contact area with the belt layer 2 and improve the uniformity of the ground contact stress.

Fifth embodiment

In this embodiment, as described in the above embodiments, the tire comprises a tread 1, a belt layer 2, a support assembly 3, a hub 4 and a spoke 5, wherein the hub 4 is connected with the spoke 5, the support assembly 3 is connected to the hub 4, the belt layer 2 is sleeved along the outer periphery of the support assembly 3, and the tread 1 is covered on the belt layer 2. Alternatively, the hub 4 and the spokes 5 may be of a unitary construction or may be mechanically connected. The radially inner side of the support member 3 is fixedly connected to the radially outer side of the hub 4. The radially inner side of the belt layer 2 is fixedly connected to the radially outer side of the support assembly 3. The outer surface of the tread 1 is provided with patterns, so that the friction performance of the tire can be ensured.

This embodiment is different from the remaining embodiments in that, as shown in fig. 11 and 12, a plurality of support members 3 are provided, and the plurality of support members 3 are uniformly distributed in the circumferential direction of the tire. Each support assembly 3 includes two support bodies 30 symmetrically disposed, the two support bodies 30 are symmetrically disposed along a radial plane of the tire, and a distance between the two support bodies 30 decreases from inside to outside and increases along the radial direction of the tire. I.e. the extension direction of the support member 3 changes from circumferential to axial with respect to the first, second and third embodiments. After the extension direction of the support assembly 3 is changed, a similar effect can be achieved as well, namely: the support body 30 is deformed slowly to support each other and antagonize each other, so that the rigidity is not reduced along with the increase of the deformation, which is beneficial to the light weight and the performance improvement of the tire.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A non-pneumatic tire is characterized by comprising a tire tread (1), a belt layer (2), a support assembly (3), a hub (4) and spokes (5), wherein the hub (4) is connected with the spokes (5), the support assembly (3) is connected to the hub (4), the belt layer (2) is sleeved along the outer periphery of the support assembly (3), and the tire tread (1) is covered on the belt layer (2);

the supporting component (3) is an elastic piece, and the supporting component (3) comprises two symmetrically arranged supporting bodies (30);

the support bodies (30) have radians, and the distance between the two support bodies (30) is gradually increased from large to small along the radial direction of the tire from inside to outside;

or the distance between the two support bodies (30) is increased from small to large along the radial direction of the tire from inside to outside.

2. A non-pneumatic tyre as claimed in claim 1, wherein said supporting body (30) comprises a supporting body (31), said supporting body (31) being connected at each of its ends to an outer connecting portion (32) and an inner connecting portion (33), said outer connecting portion (32) being connected to said belt structure (2) and said inner connecting portion (33) being connected to said hub (4).

3. A non-pneumatic tyre as claimed in claim 2, characterized in that the material of said supporting body (31) is a composite of elastomeric material and reinforcing fibres.

4. A non-pneumatic tyre as claimed in anyone of claims 1 to 3, wherein said supporting assembly (3) is one in number, said supporting assembly (3) extending in a circumferential direction of the tyre, two of said supporting bodies (30) being arranged symmetrically along an equatorial plane of the tyre.

5. A non-pneumatic tyre as claimed in anyone of claims 1 to 3, wherein said support assembly (3) is provided in plurality, a plurality of said support assemblies (3) being uniformly distributed along the axial direction of the tyre and each said support assembly (3) extending in the circumferential direction of the tyre.

6. A non-pneumatic tyre as claimed in anyone of claims 1 to 3, wherein said support assembly (3) is provided in plurality, a plurality of said support assemblies (3) being uniformly distributed along the circumferential direction of the tyre, two said support bodies (30) being symmetrically arranged along a radial plane of the tyre.

7. A non-pneumatic tyre as claimed in anyone of claims 1 to 3, wherein a connecting body (34) is provided at the minimum distance between two of said supporting bodies (30), said connecting body (34) connecting two of said supporting bodies (30), and the material of said connecting body (34) is an elastomeric material.

8. A non-pneumatic tyre as claimed in claim 7, characterized in that said connecting body (34) is of split construction.

9. A non-pneumatic tyre as claimed in anyone of claims 1 to 3, further comprising two auxiliary supports (35), two auxiliary supports (35) being provided, two auxiliary supports (35) being symmetrically arranged along a symmetry plane of said support body (30);

a first end of the auxiliary support (35) is connected to the support body (31) and a second end of the auxiliary support (35) is connected to the belt layer (2).

10. A non-pneumatic tyre as claimed in claim 9, characterized in that said auxiliary support portion (35) has a curvature, the auxiliary support portion (35) and the support body (30) being located on the same side of the symmetry plane of the support body (30) with opposite bending directions.