1. A non-pneumatic tire, comprising:

a hub;

an annular band located at the periphery of the hub;

a plurality of spokes disposed circumferentially between the annular band and the hub; each spoke is V-shaped and comprises two inclined plates arranged at an angle and an arc-shaped vertex angle area formed at the joint of the two inclined plates;

and the force resisting part is used for limiting the deformation amount of the top corner region to reach the deformation amount corresponding to the yield strength.

2. The non-pneumatic tire of claim 1 wherein said force-resisting member is located between two of said sloping plates; the force-resisting component is for: when the included angle of the two inclined plates is smaller than a preset included angle, the resistance component is used for applying reaction force to the two inclined plates.

3. The non-pneumatic tire of claim 2 wherein the force-resisting component includes a tile having an arcuate surface and a connecting portion integrally formed with the tile, the end of the connecting portion remote from the tile having an arcuate surface matching the inside of the apex region, the end of the connecting portion affixed to the inside of the apex region and connected to the apex region by a fastener passing through the arcuate portion; wherein:

the arc surface of the tile body faces to the two sloping plates, and the connecting part enables the tile body to be far away from the top corner region;

when the included angle of two swash plates diminishes and is less than when predetermineeing the included angle, two the swash plate is kept away from the regional position of apex angle with the arc surface contact of the tile-shaped body, so that the tile-shaped body is to two the reaction force is applyed to the swash plate.

4. The non-pneumatic tire of claim 3 wherein a rubber layer is affixed to the ends of the connecting portion of the force-resisting component.

5. The non-pneumatic tire of claim 2 wherein the force-resisting member includes a V-shaped flexure and a plurality of width-wise arranged runners formed at both ends of the flexure; the two inclined plates of the spoke are provided with through sliding grooves in thickness, and the sliding strip penetrates through the sliding grooves; wherein:

when two of spoke the contained angle of swash plate diminishes and is less than when predetermineeing the contained angle, two the swash plate with the bent plate contact makes the bent plate is to two the counterforce is applyed to the swash plate.

6. A non-pneumatic tire as in claim 1, wherein the ends of the spokes are connected to the annular band and to the hub by means of insert members; wherein:

the tip of spoke is formed with the cross-section and is the circular shape strip body, inlay and establish the part and seted up the cross-section and be circular shape guide way, the strip certainly the tip of guide way stretches into extremely the guide way, so that the spoke can be relative inlay and establish the part and rotate, it is fixed in with the help of the fastener to inlay and establish the part the annular band and wheel hub.

7. A non-pneumatic tire according to claim 5, wherein the end of said slide is provided with a stopper member for restricting the slide from coming out of the slide groove of said swash plate.

Background

Non-pneumatic tires differ from pneumatic tires in that: pneumatic tires cushion by virtue of the compressibility and fluidity of the gas within the tire and the elastic deformation of the carcass, while non-pneumatic tires cushion by virtue of the elastic deformation of an elastic structure or elastic component.

Various configurations of non-pneumatic tires have been proposed in the prior art, wherein one configuration of non-pneumatic tire comprises: an annular band, a hub located radially inward of the annular band, and a plurality of circumferentially arranged spokes between the annular band and the hub, an outer surface of the annular band for contact with a road surface, the spokes acting to: on the one hand, for supporting the weight of the moving vehicle and, on the other hand, for relieving the impact by elastically deforming when the tyre encounters an impact.

In order to be able to bring the relationship between the amount of deformation in the radial direction of the contact area of the tire and the resistance force exerted by the tire in this area closer to a determined functional relationship when the tire is subjected to an impact, in order to facilitate the design of the tire by setting the parameters of the various physical characteristics of the tire in actual use, it is known to provide the spokes in a V-shape, with the apex angles of the V-shaped spokes being set in an arc shape for: the cushioning of the spokes is achieved only by the deformation of the top corner regions (the other regions are not deformed), so to speak, this arrangement does enable the relationship between deformation amount and resistance to be more constant.

However, the above-described structure of the spoke does give the non-pneumatic tire the following drawbacks:

when the tire is subjected to a great impact, for example, a moving vehicle in running falls on the ground under a large height span, so that the tire is subjected to the great impact in the vertical direction of the ground, the tire with the structure buffers the impact by means of deformation of the spoke, and the deformation of the spoke only occurs in the top corner region actually based on the structure of the spoke, and as a whole, an included angle between two inclined plates of the spoke is reduced, however, the stress of the top corner region exceeds the yield strength due to the excessive deformation of the top corner region, so that the region is subjected to plastic deformation, and the top corner region is equivalent to a fulcrum of the stress of the spoke, and as the included angle of the two inclined plates is reduced along with the increase of the deformation of the top corner region, the reduction of the included angle increases a moment arm formed by the vertical distance of the impact force acting on the inclined plates to the top corner region, the increased moment arm increases the rate of plastic deformation, which understandably leads to permanent deformation of the spokes if the apex regions are plastically deformed, which indicates tire failure.

Disclosure of Invention

In view of the above technical problems in the prior art, embodiments of the present invention provide a non-pneumatic tire.

In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme:

a non-pneumatic tire comprising:

a hub;

an annular band located at the periphery of the hub;

a plurality of spokes disposed circumferentially between the annular band and the hub; each spoke is V-shaped and comprises two inclined plates arranged at an angle and an arc-shaped vertex angle area formed at the joint of the two inclined plates;

and the force resisting part is used for limiting the deformation amount of the top corner region to reach the deformation amount corresponding to the yield strength.

Preferably, said resistance member is located between two of said sloping plates; the force-resisting component is for: when the included angle of the two inclined plates is smaller than a preset included angle, the resistance component is used for applying reaction force to the two inclined plates.

Preferably, the force-resisting part comprises a tile-shaped body with an arc-shaped surface and a connecting part integrally formed with the tile-shaped body, the end part of the connecting part, far away from the tile-shaped body, is provided with an arc-shaped surface matched with the inner side of the vertex angle region, and the end part of the connecting part is attached to the inner side of the vertex angle region and is connected to the vertex angle region through a fastener penetrating through the arc-shaped part; wherein:

the arc surface of the tile body faces to the two sloping plates, and the connecting part enables the tile body to be far away from the top corner region;

when the included angle of two swash plates diminishes and is less than when predetermineeing the included angle, two the swash plate is kept away from the regional position of apex angle with the arc surface contact of the tile-shaped body, so that the tile-shaped body is to two the reaction force is applyed to the swash plate.

Preferably, a rubber layer is attached to the end of the connecting portion of the force-resisting member.

Preferably, the force-resisting member includes a bent plate having a V-shape and a plurality of slide bars formed at both ends of the bent plate and arranged in width; the two inclined plates of the spoke are provided with through sliding grooves in thickness, and the sliding strip penetrates through the sliding grooves; wherein:

when two of spoke the contained angle of swash plate diminishes and is less than when predetermineeing the contained angle, two the swash plate with the bent plate contact makes the bent plate is to two the counterforce is applyed to the swash plate.

Preferably, the ends of the spokes are connected to the annular band and to the hub by means of an embedded part; wherein:

the tip of spoke is formed with the cross-section and is the circular shape strip body, inlay and establish the part and seted up the cross-section and be circular shape guide way, the strip certainly the tip of guide way stretches into extremely the guide way, so that the spoke can be relative inlay and establish the part and rotate, it is fixed in with the help of the fastener to inlay and establish the part the annular band and wheel hub.

Preferably, the end of the slide bar is provided with a limiting part, and the limiting part is used for limiting the slide bar to be separated from the sliding groove of the inclined plate.

Compared with the prior art, the non-pneumatic tire provided by the invention has the beneficial effects that:

the invention can effectively avoid the plastic permanent deformation of the spoke by additionally arranging the resistance component, thereby prolonging the service life of the non-pneumatic tire.

The summary of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments, by way of example and not by way of limitation, and together with the description and claims, serve to explain the inventive embodiments. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

Fig. 1 is a schematic structural view of a non-pneumatic tire provided in example 1 of the present invention (in the case where the tire is subjected to a small ground impact).

Fig. 2 is an enlarged view of a portion a of fig. 1.

Fig. 3 is an enlarged view of a portion B of fig. 2.

Fig. 4 is an enlarged view of a portion C of fig. 2.

Fig. 5 is an enlarged view of a portion D of fig. 2.

Fig. 6 is a schematic structural view of a non-pneumatic tire provided in example 1 of the present invention (in the case where the tire is greatly impacted by the ground).

Fig. 7 is an enlarged view of a portion E of fig. 6.

Fig. 8 is an enlarged view of a portion F of fig. 7.

Fig. 9 is a schematic structural view of a non-pneumatic tire provided in example 2 of the present invention (in the case where the tire is subjected to a small ground impact).

Fig. 10 is an enlarged view of a portion G of fig. 9.

Fig. 11 is an enlarged view of a portion H of fig. 10.

Fig. 12 is a schematic structural view of a non-pneumatic tire provided in example 2 of the present invention (in the case where the tire is greatly impacted by the ground).

Fig. 13 is an enlarged view of a portion I of fig. 12.

Reference numerals:

10-an endless belt; 20-a hub; 30-spokes; 31-a sloping plate; 311-strip body; 312-a guide slot; 32-apex angle region; 33-an embedded part; 41-a force-resisting component; 411-tile shaped body; 412-a connecting portion; 413-a rubber layer; 42-a force-resisting component; 421-a slide bar; 422-a limiting member.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the invention have been omitted.

As shown in fig. 1 to 13, the disclosed embodiment of the present invention discloses a non-pneumatic tire including: a hub 20, an annular band 10, a plurality of spokes 30, and force-resisting members 41, 42.

The hub 20 is made of a metallic material, for example, the hub 20 is made of an aluminum alloy material, the hub 20 is used for being connected to a rotating shaft of a moving vehicle, and the rotating shaft is driven by a driving system to drive the hub 20 to rotate so as to rotate the whole tire for the moving vehicle to run.

The annular belt 10 is located at the periphery of the hub 20, the annular belt 10 is made of a rubber material and a composite wire body, the annular belt 10 corresponds to a carcass of a pneumatic tire, and in the present invention, the annular belt 10 has an outer layer with a small elastic modulus and an inner layer with a large elastic modulus, and the outer layer is used for contacting with the ground.

The plurality of spokes 30 are circumferentially arranged between the hub 20 and the inner layer of the annular band 10, that is, both ends of the spokes 30 are connected to the hub 20 and the inner layer of the annular band 10, respectively, and the spokes 30 are put in a compressed state, so that the hub 20 gives a certain rigidity to the entire tire and relieves the impact by deforming when the tire is subjected to the impact.

In the present invention, each spoke 30 is V-shaped, the spokes 30 are made of spring steel, specifically, each spoke 30 includes two inclined plates 31 arranged at an angle and an arc-shaped corner region 32 formed at the joint of the two inclined plates 31, and in order to make the two inclined plates 31 elastically deform only at the corner region 32 when the angle is greater than a preset angle, the corner region 32 is adjusted so that the elastic modulus of the main body portion of the inclined plate 31 is greater than that of the corner region 32, which makes the deformation completely occur only at the corner region 32 when the inclined plate 31 deforms when the angle is greater than the preset angle.

Each spoke 30 is provided with a resistance element 41,42, which resistance element 41,42 is intended to limit the angle of the two inclined plates 31 of the spoke 30 to be less than a preset angle when deformed.

It should be noted that: the included angle of the two sloping plates 31 marks the deformation amount of the vertex angle region 32, that is, the smaller the included angle of the two sloping plates 31 is, the larger the deformation amount of the vertex angle region 32 is, and thus, the preset included angle is set based on the deformation amount of the vertex angle region 32, and the setting rule is: the included angle of the two sloping plates 31 when the vertex angle region 32 just yields is the limit included angle C, so that the preset included angle is smaller than the limit included angle C.

Based on the above discussion, the resistance members 41 and 42 are actually used to prevent the vertex angle region 32 from yielding and thus from plastically and permanently deforming by limiting the included angle between the two inclined plates 31 to be smaller than the preset included angle.

In some preferred embodiments, a preferred connection mode is adopted between the spoke 30 and the hub 20 and the inner side of the annular band 10, specifically, when the spoke 30 is processed, a strip 311 with a circular section is processed at the end part of the inclined plate 31, an embedded part 33 is fixed at the outer side of the hub 20 and the inner side of the annular band 10 by fasteners, a guide groove 312 with a circular section is opened on the embedded part 33, the guide groove 312 penetrates through the embedded part 33 in the thickness direction of the tire, the strip of the end part of the inclined plate 31 extends into the guide groove 312 from one section of the guide groove 312, thus, the inclined plate 31 is connected to the hub 20 and the annular band 10 under the matching of the strip 311 and the embedded part 33, and the inclined plate 31 can freely rotate around the embedded part 33 under a certain angle. The advantages of this configuration are: when the tire is impacted, the spokes 30 are deformed by the change of the included angle of the two inclined plates 31 to relieve the impact, additional torque cannot be generated in the connecting area of the inclined plates 31, the hub 20 and the annular band 10, so that the stress condition and the deformation condition of the spokes 30 become very simple, the relationship between the included angle of the inclined plates 31 and the radial resistance can be analyzed more accurately in the design stage of the tire, and the deformation difference of different spokes 30 caused by manufacturing, mounting and process errors can be effectively avoided.

Two configurations of the force-resisting members 41,42 are described below.

Example 1

As shown in fig. 1 to 8, in the present embodiment, the resistance member 41 is located between two sloping plates 31 of the spoke 30, the resistance member 41 includes a tile-shaped body 411 and a connecting portion 412 which are integrally formed, the tile-shaped body 411 has an arc-shaped surface, the connecting portion 412 is connected to the tile-shaped body 411, an end portion of the connecting portion 412 is formed with an arc-shaped surface which matches with an arc-shaped surface of an inner side of a vertex angle region 32 of the spoke 30, the arc-shaped surface of the end portion of the connecting portion 412 is coated with a rubber layer 413, an end portion of the connecting portion 412 is attached to the inner side of the vertex angle region 32 and is fixed by a fastener penetrating from the outer side, and the connecting portion 412 has a length such that the arc-shaped surface of the tile-shaped body 411 is opposite to a position of the sloping plate 31 which is far from the vertex angle region 32. And the relative positional relationship of the shoe 411 and the spoke 30 is configured such that: when the angle of the two sloping plates 31 of the spoke 30 decreases to the preset angle, the positions of the sloping plates 31 far from the apex angle region 32 start to contact the arc-shaped surface of the tile 411, and therefore, the tile 411 exerts resistance against the two sloping plates 31 to prevent the angle of the two sloping plates 31 from further decreasing.

Based on the above, when the tire is greatly impacted by the ground and the vertex angle area 32 of the spoke 30 may be plastically deformed, as shown in fig. 8, the tile-shaped body 411 prevents the included angle of the two inclined plates 31 from being reduced to within the preset included angle, so as to limit the vertex angle area 32 of the spoke 30 from yielding and deforming, and further avoid the vertex angle area 32 from being plastically deformed.

It should be noted that: the tile 411 is made to have a modulus of elasticity greater than that of the spoke 30.

In this embodiment, the purpose of coating the end of the connection portion 412 of the resistance element 41 with the rubber layer 413 is to: the rubber layer 413 can be deformed in real time, so that the end of the connecting part 412 is always matched with the inner side of the vertex angle area 32, the influence of the connecting part 412 on the elastic deformation of the vertex angle area 32 is reduced to the greatest extent, and the elastic deformation characteristic of the spoke 30 cannot be greatly influenced due to the arrangement of the resistance component 41.

Example 2

As shown in fig. 9 to 13, in the present embodiment, the resistance member 42 includes a bent plate having a V-shape and a plurality of slides 421 formed at both ends of the bent plate and arranged in width; the two inclined plates 31 of the spoke 30 are provided with through sliding grooves in thickness, and the sliding strip 421 penetrates through the sliding grooves. A stopper 422 is detachably connected to an end of the slide bar 421, and the stopper 422 is used to restrict the slide bar 421 from coming out of the sliding groove of the swash plate 31. The relationship of the force-resisting member 42 to the spokes 30 is configured to: when the angle between the two inclined plates 31 of the spoke 30 is reduced to the preset angle, the two inclined plates 31 contact the bent plate to make the bent plate generate resistance to the two inclined plates 31 to increase the overall resistance of the spoke 30.

Based on the above, as shown in fig. 13, when the tire is greatly impacted by the ground and the top corner regions 32 of the spokes 30 are likely to be plastically deformed, the V-shaped bent plate increases the rigidity of the spokes 30 by contacting with the spokes 30, and the spokes 30 have greater rigidity to prevent the included angle of the sloping plate 31 from being further reduced.

The action of the force-resisting member 42 of this embodiment in avoiding plastic deformation of the top corner regions 32 of the spokes 30 differs somewhat from the action of the force-resisting member 41 of embodiment 1:

in the embodiment 1, the angle between the two sloping plates 31 of the spoke 30 is not reduced after the spoke 30 contacts the resistance member 41, while in the embodiment 2, the angle between the two sloping plates 31 of the spoke 30 is reduced to a certain extent after the spoke 30 contacts the resistance member 42, however, the reduction is stopped, and the rigidity of the spoke 30 against deformation is increased after the spoke 31 contacts. Thus, the preset angle setting in this embodiment 2 is larger than that in the comparison document 1.

The invention can effectively avoid the spoke 30 from generating plastic permanent deformation by adding the resistance parts 41 and 42, thereby prolonging the service life of the non-pneumatic tire.

Moreover, although exemplary embodiments have been described herein, the scope of the present invention includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or alterations. The elements of the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.

The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the above-described embodiments, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a disclosed feature not claimed is essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.