A multi-legged coupled spoke and tire for a non-pneumatic tire

Abstract

The present application relates to a kind of multi-foot coupling spoke and tire for non-pneumatic tire, spoke includes first leg structure, second leg structure and third leg structure, first leg structure and second leg structure are connected in V type, third leg structure is connected in V type with second leg structure, the end of third leg structure is equipped with first coupling surface, second coupling surface is equipped with in the opposite side surface of second leg structure with the side of third leg structure, first coupling surface can coincide with second coupling surface in translation process.The third leg structure of present application is arranged, and the third leg structure is coupled and connected with second leg structure, realizes circumferential coupling arrangement, substantially reduces the stress of originally bearing tension side, avoids interface and rubber body due to repeated tension and leads to the failure of adhesive surface, such as rubber fatigue tear phenomenon.The multi-foot coupling spoke improves the vertical stiffness of spoke, enhances the carrying capacity, further improves its carrying stability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of support structure of tire, more particularly, to a multi-leg coupled spoke for non-pneumatic tire and tire. BACKGROUND

[0002] At present, in the spoke structure design of non-pneumatic tire at home and abroad, the structure design of single rigid structure or double rigid structure with angle is usually adopted, and the rubber is attached outside and bonded with the tread for bearing. Generally speaking, the single structure has poor bending and torsion resistance during the bearing deformation process, and can only be used in low-speed application scenarios; the double rigid structure with angle has high bearing capacity and bending and torsion resistance after the vulcanized rubber is integrated, but due to the asymmetry of the inclination angle of the rigid structure during deformation, a huge torque is generated on the adhesive fixed surface, the stress distribution of the adhesive surface is uneven, and the phenomenon of one side tension and one side compression occurs, and the tension side often generates cracks due to interface fatigue and rubber body fatigue, and cannot maintain long-term continuous work. SUMMARY

[0003] In view of the above problems, the embodiment of the present application provides a multi-leg coupled spoke for non-pneumatic tire and tire, which is used to solve the problems of the prior art, such as poor fatigue strength of the adhesive surface caused by internal bending moment accumulation during structure bearing, adhesive surface tearing and failure, and the like.

[0004] According to one aspect of the embodiment of the present application, a multi-leg coupled spoke for non-pneumatic tire is provided, which comprises a first leg structure, a second leg structure and a third leg structure, the first leg structure and the second leg structure are connected in V shape, the third leg structure is connected with the second leg structure in V shape, the end of the third leg structure away from the second leg structure is provided with a first coupling surface, the side surface of the second leg structure opposite to the side where the third leg structure is located is provided with a second coupling surface, and the first coupling surface can coincide with the second coupling surface during translation.

[0005] Further, as a preferred technical solution, the opposite ends of the first leg structure and the second leg structure respectively extend outward to form a first leg structure and a second leg structure, and the second coupling surface is arranged on the inner side surface of the second leg structure.

[0006] Further, as a preferred technical solution, a fourth leg structure is provided, the end of the fourth leg structure is connected with the first leg structure in a V shape, the fourth leg structure is located on the same side as the third leg structure, the end of the fourth leg structure away from the first leg structure is provided with a fifth coupling surface, a sixth coupling surface is provided on the side of the first leg structure opposite to the side where the fourth leg structure is located, and the fifth coupling surface can coincide with the sixth coupling surface during translation.

[0007] Further, as a preferred technical solution, the sixth coupling surface is arranged on the inner side of the first leg structure.

[0008] Further, as a preferred technical solution, the first leg structure and the second leg structure are connected in a V shape or are not connected in a V shape, the inner and outer sides of the opposite ends of the first leg structure and the second leg structure are connected by a nose combination and a nose ply, respectively, the upper end of the third leg structure is fixedly connected with the nose ply on the outer side of the opposite end of the first leg structure located on the second leg structure, the lower end of the fourth leg structure is fixedly connected with the nose ply on the outer side of the opposite end of the first leg structure located on the second leg structure, the first coupling surface is arranged on the end surface of the lower end of the third leg structure, and the fifth coupling surface is arranged on the end surface of the upper end of the fourth leg structure.

[0009] Further, as a preferred technical solution, the third leg structure and the fourth leg structure can be square, trapezoidal or arc-shaped, the first coupling surface and the fifth coupling surface can be planar, arc-shaped, jagged or irregular, the shape of the second coupling surface matches that of the first coupling surface, and the shape of the sixth coupling surface matches that of the fifth coupling surface.

[0010] Further, as a preferred technical solution, a hollow structure is arranged on the end surface of the second leg structure, and the hollow structure is arranged along the end of the second leg structure close to the inner side of the second leg structure.

[0011] Further, as a preferred technical solution, a third coupling surface is arranged on the end of the first leg structure located on the outer side of the first leg structure, a fourth coupling surface is arranged on the inner side of the first leg structure, and the third coupling surface can coincide with the fourth coupling surface during translation.

[0012] Further, as a preferred technical solution, the first leg structure is provided with a first glass fiber reinforced structure, the second leg structure is provided with a second glass fiber reinforced structure, the third leg structure is provided with a third glass fiber reinforced structure, and the fourth leg structure is provided with a fourth glass fiber reinforced structure, and the first, second, third and fourth glass fiber reinforced structures are all prepared by combining continuous glass fiber and epoxy vinyl resin.

[0013] According to another aspect of the embodiment of the present application, a non-pneumatic tire is provided, comprising an outer tire tread, a rim structure matched with the outer tire tread, and a plurality of the above-mentioned multi-legged coupling spokes, the plurality of multi-legged coupling spokes being distributed along the rim structure and between the outer tire tread and the rim structure; the second leg structure is connected with the outer tire tread, the first leg structure is connected with the rim structure, and the first coupling surface and the second coupling surface on the third leg structure after connection are connected head to tail along the end surface of the outer tire tread, or the third coupling surface and the fourth coupling surface on the first leg structure after connection are connected head to tail along the end surface of the rim structure, or the fifth coupling surface and the sixth coupling surface on the fourth leg structure after connection are connected head to tail along the end surface of the rim structure.

[0014] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0015] The multi-legged coupling spoke of the present application realizes circumferential coupling arrangement through the third leg structure and the coupling connection of the third leg structure and the second leg structure, greatly reduces the stress on the originally bearing tensile side, avoids the interface and the rubber body from being repeatedly tensile to cause the failure of the bonding surface and the fatigue tearing of the rubber, and improves the vertical stiffness of the spoke, enhances the bearing capacity, and further improves the bearing stability. The problems of the single group or two-legged structure of the leg part of the non-pneumatic spoke, the lever effect in the use process, the stress amplification, the low bearing efficiency, and the cracks of the rubber structure caused by the warping effect of the end part in the embedding process of the linear bearing structure, and the fatigue damage and the failure of the spoke are solved.

[0016] In addition, the multi-legged coupling spoke of the present application is provided with the third coupling surface and the fourth coupling surface at the front and rear end surfaces of the leg structure connected with the rim structure, the third coupling surface can coincide with the fourth coupling surface in the translation process, thereby realizing the front and rear coupling, further coupling the stress on the front and rear sides of the leg structure, pressing the pressure on the compression side of the leg structure of the next multi-legged coupling spoke on the tensile warping side of the previous multi-legged coupling spoke, thereby realizing the offset of the warping stress of the multi-legged coupling spoke, and further greatly improving the fatigue performance of the multi-legged coupling spoke.

[0017] The multi-legged coupled spoke of the present application, on the basis of the third leg structure, through the fourth leg structure, and the fourth leg structure is coupled with the first leg structure, realizes the circumferential coupling arrangement, this kind of multi-legged coupled spoke further greatly reduces the stress of originally bearing tensile side, avoids the interface and rubber body due to repeated tension and leads to the failure of bonding surface, rubber fatigue tear and other phenomena. The multi-legged coupled spoke improves the vertical stiffness of the spoke, enhances the bearing capacity, and further improves the bearing stability. The problems of the non-pneumatic spoke are solved, such as the single or two-legged structure of the leg part of the non-pneumatic spoke, the lever effect occurs in the use process, the stress amplification, the low bearing efficiency, and the straight bearing structure in the embedding rubber body stress process, the end is easy to produce warping effect due to stress, which causes the crack of rubber structure, and further causes fatigue failure, resulting in spoke failure and other problems.

[0018] The non-pneumatic tire of the present application adopts a multi-legged coupled spoke, which greatly reduces the stress of the originally bearing tensile side through the circumferentially coupled leg structure, avoids the interface and rubber body due to repeated tension and leads to the failure of bonding surface, rubber fatigue tear and other phenomena. The multi-legged coupled spoke improves the vertical stiffness of the spoke, enhances the bearing capacity, and further improves the bearing stability, and also prolongs the fatigue life of the multi-legged coupled spoke, and further prolongs the fatigue life of the non-pneumatic tire.

[0019] The above description is only a summary of the technical scheme of the embodiments of the present application, in order to more clearly understand the technical means of the embodiments of the present application, and can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the embodiments of the present application more obvious and easy to understand, the specific embodiments of the present application are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings are only used to show the embodiments, and are not considered as limitations of the present application. Moreover, the same reference signs are used to represent the same parts throughout the drawings. In the drawings:

[0021] Figure 1 A cross-sectional view of a three-legged coupled spoke of a multi-legged coupled spoke for a non-pneumatic tire provided by the present application is shown.

[0022] Figure 2 A simulation strain diagram of a two-legged spoke is shown.

[0023] Figure 3 A simulation strain diagram of a three-legged coupled spoke of a multi-legged coupled spoke for a non-pneumatic tire provided by the present application is shown.

[0024] Figure 4A cross-sectional view of a four-foot coupled spoke of a multi-foot coupled spoke for a non-pneumatic tire is shown.

[0025] Figure 5 A simulated strain diagram of a four-foot coupled spoke of a multi-foot coupled spoke for a non-pneumatic tire is shown.

[0026] Figure 6 A structural diagram of a non-pneumatic tire using a three-foot coupled spoke is shown.

[0027] Figure 7 A structural diagram of a non-pneumatic tire using a four-foot coupled spoke is shown. Figure 6 A partial enlarged diagram is shown.

[0028] Figure 8 A structural diagram of a non-pneumatic tire using a four-foot coupled spoke is shown. DETAILED DESCRIPTION

[0029] It should be noted that the embodiments and technical features in the present application can be combined with each other without conflict, and the detailed description in the specific embodiments should be understood as an explanation of the purpose of the present application, and should not be regarded as an improper limitation of the present application.

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions of the present application will be further described in detail below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0031] In the embodiments of the present application, the terms "first" and "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0032] In addition, in the embodiments of the present application, the orientation terms such as "up", "down", "left" and "right" are defined with respect to the orientation of the components shown in the drawings, and it should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and can be changed accordingly according to the change of the orientation of the components placed in the drawings.

[0033] In the embodiments of the present application, unless otherwise specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integral; can be directly connected, or indirectly connected through intermediate medium.

[0034] In the embodiments of the present application, the terms "comprising", "containing" or any other variant thereof are intended to encompass a non-exclusive inclusion. Without more limitations, the element defined by the sentence "comprising a" does not exclude the presence of additional same elements in the process, method, article or device including the element.

[0035] In the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the exemplary or for example embodiments are presented as a means of teaching the relevant concept.

[0036] Embodiment 1

[0037] The embodiment is to solve the problems of poor fatigue strength of the glue joint surface, tearing and failure of the adhesive surface caused by internal bending moment accumulation during structure bearing in the prior art spoke structure with single-piece rigid structure or double-piece rigid structure with an included angle, and discloses a multi-foot coupled spoke for a non-pneumatic tire. The third leg structure is coupled and connected with the second leg structure, and the circumferential coupling arrangement is realized. The multi-foot coupled spoke greatly reduces the stress on the originally bearing tensile side, avoids the failure of the adhesive surface and the phenomenon of rubber fatigue tearing caused by repeated tension of the interface and the rubber body.

[0038] Please refer to Figure 1 , which shows a cross-sectional view of a three-foot coupled spoke of a multi-foot coupled spoke for a non-pneumatic tire according to the embodiment.

[0039] The multi-foot coupled spoke for a non-pneumatic tire disclosed by the embodiment comprises a first leg structure 1, a second leg structure 2 and a third leg structure 3, as shown in Figure 1 . The first leg structure 1 and the second leg structure 2 are connected in a V shape, the third leg structure 3 is connected with the second leg structure 2 in a V shape, the end of the third leg structure 3 away from the second leg structure 2 is provided with a first coupling surface 31, the side surface of the second leg structure 2 opposite to the side where the third leg structure 3 is located is provided with a second coupling surface 21, and the first coupling surface 31 can coincide with the second coupling surface 21 during translation.

[0040] In the embodiment, the end of the first leg structure 1 is adhesively fixed with the rim structure of the non-pneumatic tire, the end of the second leg structure 2 is adhesively fixed with the outer tire belt surface, and the third leg structure 3 is connected with the second leg structure 2 in a V shape and coupled with the second leg structure 2.

[0041] Specifically, the upper end of the third leg structure 3 is fixedly connected with the outer side of the upper end of the second leg structure 2, that is, the upper end of the third leg structure 3 is fixedly connected with the outer side of the opposite end of the second leg structure 2 relative to the first leg structure 1; the first coupling surface 31 is arranged on the end surface of the lower end of the third leg structure 3, and then the second coupling surface 21 is located on the inner side of the second leg structure 2, so that the first coupling surface 31 can coincide with the second coupling surface 21 in the translation process.

[0042] In the embodiment, the specific position of the second coupling surface 21 on the inner side of the second leg structure 2 is designed based on the length of the third leg structure 3 and the angle between the third leg structure 3 and the second leg structure 2.

[0043] As a preferred embodiment, the second coupling surface 21 is located on the inner side of the second leg structure 2 close to the end of the second leg structure 2.

[0044] In some embodiments, after the first coupling surface 31 of the third leg structure 3 is coupled with the second coupling surface 21 of the second leg structure 2, the bottom end thereof can also be bonded with the tire belt surface.

[0045] The multi-legged coupled spoke of the embodiment, by arranging the third leg structure 3, becomes a three-legged coupled spoke, and the third leg structure 3 is coupled with the second leg structure 2, achieving circumferential coupling arrangement. The multi-legged coupled spoke greatly reduces the stress on the originally bearing tensile side, avoids the failure of the bonding surface and the fatigue tearing of the rubber due to repeated tension of the interface and the rubber body, and solves the problems of the single or two-legged structure of the leg part of the non-pneumatic spoke, the lever effect in the use process, the stress amplification, the low bearing efficiency, and the cracks of the rubber structure due to the warping effect of the end of the straight bearing structure in the embedding process of the rubber body, and further improves the bearing stability.

[0046] Embodiment 2

[0047] The embodiment discloses a multi-legged coupled spoke for a non-pneumatic tire, which further discloses the specific structure of the multi-legged coupled spoke on the basis of the embodiment 1.

[0048] In the embodiment, please continue to refer to Figure 1The opposite ends of the first leg structure 1 and the second leg structure 2 respectively extend outwardly a first leg structure 5 and a second leg structure 6, and the second coupling surface 21 is arranged on the inner side of the second leg structure 6, so that the first coupling surface 31 can coincide with the second coupling surface 21 during translation. The coupling design of the third leg structure 3 and the second leg structure 6 improves the vertical stiffness of the spoke, greatly reduces the stress originally borne by the tensile side, avoids the failure of the bonding surface and the fatigue tearing of the rubber due to repeated tension of the interface and the rubber body, and also enhances the load-bearing capacity of the spoke, which is beneficial to improving the load-bearing stability of the structure.

[0049] In addition, in the embodiment, the first leg structure 1 and the second leg structure 2 are connected V-shaped structures or unconnected V-shaped structures; the inner and outer sides of the opposite ends of the first leg structure 1 and the second leg structure 2 are transitionally connected by a nose portion combination 7 and a nose portion cord layer 8, respectively; and the upper end of the third leg structure 3 is fixedly connected with the nose portion cord layer 8 on the outer side of the upper end of the second leg structure 2.

[0050] That is, the embodiment specifically discloses a connection structure of the third leg structure 3 and the second leg structure 2, and the upper end of the third leg structure 3 is fixedly connected with the nose portion cord layer 8 on the outer side of the upper end of the second leg structure 2, that is, the upper end of the third leg structure 3 is connected with the upper end of the second leg structure 2 through the nose portion cord layer 8 on the outer side of the upper end of the second leg structure 2.

[0051] As a preferred embodiment, the first leg structure 1 is internally provided with a first glass fiber reinforced structure 11, the second leg structure 2 is internally provided with a second glass fiber reinforced structure 22, and the third leg structure 3 is internally provided with a third glass fiber reinforced structure 32, and the first glass fiber reinforced structure 11, the second glass fiber reinforced structure 21 and the third glass fiber reinforced structure 32 are all prepared by compounding continuous glass fibers and epoxy vinyl resin.

[0052] In the embodiment, the third leg structure 3 can be square, trapezoidal or arc-shaped, and its specific shape is not limited. Since the shape of the third leg structure 3 can be square, trapezoidal or arc-shaped, the shape of the third glass fiber reinforced structure 32 can also be linear or arc-shaped. Meanwhile, the first coupling surface 31 can be planar, arc-shaped, jagged or irregularly shaped, and the shape of the second coupling surface 21 matches that of the first coupling surface 31, so as to realize coupling connection.

[0053] In the embodiment, the first coupling surface 31 can also be considered as the contour line of the end of the third leg structure 3 away from the second leg structure 2, and the second coupling surface 21 can also be considered as the rear end contour line of the second leg structure 6 at the inner side end of the second leg structure 2. The contour line of the end of the third leg structure 3 away from the second leg structure 2 can coincide with the rear end contour line of the second leg structure 6 during the translation process.

[0054] If the contour line of the end of the third leg structure 3 away from the second leg structure 2 and the rear end contour line of the second leg structure 6 are straight lines, the contour line of the end of the third leg structure 3 away from the second leg structure 2 and the rear end contour line of the second leg structure 6 can also be considered as parallel.

[0055] In the embodiment, the second leg structure 6 is used to connect with the outer tire belt surface of the non-pneumatic tire, and therefore, the first coupling surface 31 and the second coupling surface 21 are coupled in front and back during the connection of the second leg structure 6 with the outer tire belt surface. After the connection, the first coupling surface 31 and the second coupling surface 21 can be connected in a head-to-tail manner along the outer tire belt surface, so as to greatly reduce the stress originally borne by the tension side to 0.08 MPa from the original peak value of 0.9 MPa, as shown in FIG. 6, so as to avoid the failure of the bonding surface and the rubber body due to repeated tension, rubber fatigue tearing and other phenomena, and improve the fatigue life, bearing capacity and bearing stability of the spoke. Figures 2-3

[0056] The embodiment is a preferred embodiment, and the hollow structure 61 is arranged on the end surface of the second leg structure 6 and is arranged at the end of the second leg structure 6 close to the inner side of the second leg structure 2. The second leg structure 6 where the hollow structure 61 is arranged is arranged opposite to the outer tire belt surface of the non-pneumatic tire. The size and specific position of the hollow structure 61 are determined according to the stress condition of the spoke, so as to release the pulling stress of the bonding surface of the multi-legged coupling type spoke bottom, that is, the second leg structure 6, so as to improve the fatigue strength of the spoke. Therefore, the arrangement of the hollow structure 61 avoids the generation of the tensile stress of the spoke, and further improves the fatigue life of the spoke.

[0057] Embodiment 3

[0058] The embodiment discloses a multi-legged coupling type spoke for a non-pneumatic tire, which further discloses the specific structure of the first leg structure 5 of the multi-legged coupling type spoke on the basis of the embodiment 2.

[0059] In the embodiment, please continue to refer to Figure 1 ​A third coupling surface 51 is arranged at the outer side end of the first leg structure 1 of the first leg structure 5, and a fourth coupling surface is arranged at the inner side of the first leg structure 1 of the first leg structure 5, and the third coupling surface 51 can coincide with the fourth coupling surface during translation.

[0060] In this embodiment, the third coupling surface 51 can be planar, arc-shaped, jagged or irregular, and the fourth coupling surface can be shaped to match the third coupling surface 51.

[0061] In this embodiment, the third coupling surface 51 can be considered as a front end contour line of the first leg structure 5 at the outer side end of the first leg structure 1, and the fourth coupling surface can be considered as a rear end contour line of the first leg structure 5 at the inner side end of the first leg structure 1, and the front end contour line can coincide with the rear end contour line during translation.

[0062] If the front end contour line and the rear end contour line are straight lines, they can also be considered as parallel.

[0063] In this embodiment, the first leg structure 5 is used to connect with the rim structure of the non-pneumatic tire, and therefore the third coupling surface 51 and the fourth coupling surface are coupled front and back during connection with the rim structure, and the third coupling surface 51 and the fourth coupling surface after connection can be connected head to tail along the end surface of the rim structure.

[0064] Therefore, the multi-legged coupling spoke of this embodiment further comprises that the front and back end surfaces of the first leg structure 5 connected with the rim structure are respectively arranged as the third coupling surface 51 and the fourth coupling surface, the third coupling surface 51 can coincide with the fourth coupling surface during translation, thereby realizing front and back coupling, further coupling the front and back stresses of the first leg structure 5, and realizing that the pressure on the compression side of the first leg structure 5 of the next multi-legged coupling spoke is pressed on the tension and warping side of the previous multi-legged coupling spoke, thereby realizing the offset of the warping stress of the multi-legged coupling spoke, and further greatly improving the fatigue performance of the multi-legged coupling spoke.

[0065] Embodiment 4

[0066] This embodiment discloses a multi-legged coupling spoke for a non-pneumatic tire, which further discloses another implementation manner of the multi-legged coupling spoke on the basis of Embodiment 2.

[0067] Please refer to Figure 4 , which shows a cross-sectional view of a four-legged coupling spoke of a multi-legged coupling spoke for a non-pneumatic tire provided by this embodiment.

[0068] In this embodiment, as Figure 4As shown, the fourth leg structure 4 is connected to the first leg structure 1 in a V shape, and is located on the same side as the third leg structure 3. The end of the fourth leg structure 4 away from the first leg structure 1 is provided with a fifth coupling surface 41, and the side of the first leg structure 1 opposite to the side on which the fourth leg structure 4 is located is provided with a sixth coupling surface 52. The fifth coupling surface 41 can coincide with the sixth coupling surface 52 during translation.

[0069] Specifically, because the first leg structure 1 and the second leg structure 2 are arranged in an up-down manner, the lower end of the fourth leg structure 4 is fixedly connected to the nose ply 8 located on the outer side of the first leg structure 1 opposite to the second leg structure 2. The fifth coupling surface 41 is arranged on the end face of the upper end of the fourth leg structure 4.

[0070] Meanwhile, because the first leg structure 1 and the second leg structure 2 respectively extend outward at opposite ends to form a first leg structure 5 and a second leg structure 6, the sixth coupling surface 52 is arranged on the inner side of the first leg structure 5.

[0071] In this embodiment, the sixth coupling surface 52 coincides with the fourth coupling surface described in Embodiment 3.

[0072] In addition, as a preferred embodiment, the fourth leg structure 4 has the same structure as the third leg structure 3, and can have a square, trapezoidal or arc shape. The fifth coupling surface 41 can have a planar, arc, jagged or irregular shape, and the shape of the sixth coupling surface 52 matches that of the fifth coupling surface 41.

[0073] Meanwhile, in this embodiment, the fourth leg structure 4 is provided with a fourth glass fiber reinforced structure 42, which is prepared by using continuous glass fibers and epoxy vinyl resin composite.

[0074] In this embodiment, the first leg structure 5 is used to connect with the rim structure of the non-pneumatic tire. Therefore, the fifth coupling surface 41 and the sixth coupling surface 52 are coupled in front and back during the connection of the first leg structure 5 with the rim structure. After connection, the fifth coupling surface 41 and the sixth coupling surface 52 can be connected in a head-to-tail manner along the rim structure, thereby greatly reducing the stress originally borne by the tensile side. The second leg structure 6 changes from the original peak value of 0.9 Mpa to a safe compressive stress, and the first leg structure 5 changes from the original value of about 0.5 Mpa to a safe value close to 0.1 Mpa, such as Figure 2 and Figure 5As shown, this avoids bonding failure and rubber fatigue tearing caused by repeated tension on the interface and rubber body, thus improving the fatigue life, load-bearing capacity and load-bearing stability of the wheel spokes.

[0075] This embodiment of the multi-legged coupled spoke design, by adding a fourth leg structure 4 to the existing third leg structure 3, creates a four-legged coupled spoke design. The fourth leg structure 4 is coupled to the first leg structure 1, achieving circumferential coupling. This multi-legged coupled spoke design significantly reduces the stress on the originally tension-bearing side, preventing interface and rubber body failure due to repeated tension, and avoiding rubber fatigue tearing. This multi-legged coupled spoke design improves the vertical stiffness of the spokes, enhances load-bearing capacity, and further improves its load-bearing stability. It solves the problems of single-group or two-legged structures used in non-pneumatic spokes, which result in leverage effects during use, leading to stress amplification and low load-bearing efficiency. Furthermore, the linear load-bearing structure, when embedded in the rubber body under stress, is prone to warping at its ends, causing cracks in the rubber structure and subsequent fatigue failure, ultimately leading to spoke failure.

[0076] Example 5

[0077] This embodiment discloses a non-pneumatic tire.

[0078] Please see Figure 6 The figure shows a schematic diagram of a non-pneumatic tire with a three-legged coupled spoke structure provided in this embodiment.

[0079] Please see Figure 7 The figure shows Figure 6 Enlarged view of a portion of the diagram.

[0080] In this embodiment, the non-pneumatic tire, such as Figures 6-7 As shown, the system includes an outer tire tread belt 9, a rim structure 10 that matches the outer tire tread belt 9, and multiple multi-leg coupled spokes as described in any of embodiments 1-3. The multiple multi-leg coupled spokes are distributed around the rim structure 10 between the outer tire tread belt 9 and the rim structure 10. The second support leg structure 6 is connected to the outer tire tread belt 9, and the first support leg structure 5 is connected to the rim structure 10. The first coupling surface 31 and the second coupling surface 21 on the third support leg structure 3 are connected end-to-end along the end face of the outer tire tread belt 9. The third coupling surface 51 and the fourth coupling surface on the first support leg structure 5 are connected end-to-end along the end face of the rim structure 10.

[0081] Therefore, the non-pneumatic tire of the embodiment achieves circumferential coupling arrangement by adopting the three-legged coupled spoke as described in any one of embodiments 1-3, coupling and connecting the third leg structure 3 and the second leg structure 2 when the second leg structure 6 is connected with the outer tire band surface 9, which greatly reduces the stress on the originally load-bearing tensile side, avoids the interface and the rubber body from being repeatedly stretched to cause the adhesive surface to fail, rubber fatigue tear and other phenomena. The multi-legged coupled spoke improves the vertical stiffness of the spoke, enhances the load-bearing capacity, further improves the load-bearing stability and fatigue life, and further improves the load-bearing stability and fatigue life of the non-pneumatic tire.

[0082] At the same time, the non-pneumatic tire of the embodiment further sets the front and rear end surfaces of the first leg structure 5 connected with the rim structure 10 as a third coupling surface 51 and a fourth coupling surface, respectively, which can coincide with the fourth coupling surface in the translation process, thereby achieving front and rear coupling and further coupling the stress on the front and rear sides of the first leg structure 5, realizing that the pressure on the compression side of the first leg structure 5 of the next multi-legged coupled spoke is pressed on the tensile side of the previous multi-legged coupled spoke, thereby realizing the offset of the multi-legged coupled spoke warping stress, and further greatly improving the fatigue performance of the multi-legged coupled spoke and further improving the fatigue performance of the non-pneumatic tire.

[0083] Embodiment 6

[0084] The embodiment discloses a non-pneumatic tire.

[0085] Please refer to Figure 8 , which shows a structure schematic diagram of a non-pneumatic tire provided by the embodiment adopting a four-legged coupled spoke.

[0086] In the embodiment, the non-pneumatic tire, as shown in Figure 8 , includes an outer tire band surface 9, a rim structure 10 matched with the outer tire band surface 9, and a plurality of multi-legged coupled spokes as described in embodiment 4, the plurality of multi-legged coupled spokes being distributed along the rim structure 10 between the outer tire band surface 9 and the rim structure 10; the second leg structure 6 is connected with the outer tire band surface 9, the first leg structure 5 is connected with the rim structure 10, and the first coupling surface 31 and the second coupling surface 21 on the third leg structure 3 after connection are connected head to tail along the end surface of the outer tire band surface 9, and the fifth coupling surface 41 and the sixth coupling surface 52 on the fourth leg structure 4 after connection are connected head to tail along the end surface of the rim structure 10.

[0087] Therefore, the non-pneumatic tire of the embodiment, by adopting the four-legged coupled spoke as described in Embodiment 4, through the third leg structure 3 arranged and coupled to the second leg structure 2 when the second leg structure 6 is connected with the outer tire band surface 9, and through the fourth leg structure 4 arranged and coupled to the first leg structure 1 when the first leg structure 5 is connected with the rim structure 10, realizes the circumferential coupling arrangement. This kind of four-legged coupled spoke further greatly reduces the stress on the originally bearing and tensile side, avoids the interface and rubber body from repeated tension, and causes the bonding surface to fail, rubber fatigue tear and other phenomena. And this kind of multi-legged coupled spoke improves the vertical stiffness of the spoke, enhances the bearing capacity, further improves the bearing stability and fatigue life, and further improves the bearing stability and fatigue life of the non-pneumatic tire.

[0088] The above-mentioned sequence numbers of the embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments. The above is only the preferred embodiment of the present application, and is only an example made for the purpose of clearly explaining the present application, and does not limit the patent scope of the present application. For ordinary skilled persons in the art, on the basis of the above description, other different forms of changes or variations can also be made, and here it is not necessary and also impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A multi-legged coupled spoke design for non-pneumatic tires, characterized in that, The structure includes a first leg structure (1), a second leg structure (2), and a third leg structure (3). The first leg structure (1) and the second leg structure (2) are connected in a V-shape. The inner and outer sides of the opposite ends of the first leg structure (1) and the second leg structure (2) are respectively connected by a nose connector (7) and a nose curtain layer (8). The third leg structure (3) is connected in a V-shape to the second leg structure (2). The upper end of the third leg structure (3) is fixedly connected to the nose curtain layer (8) located on the outer side of the second leg structure (2) opposite to the first leg structure (1). The end of the third leg structure (3) away from the second leg structure (2) is provided with a first coupling surface (31). The opposite side of the second leg structure (2) to the side where the third leg structure (3) is located is provided with a second coupling surface (21). The first coupling surface (31) can coincide with the second coupling surface (21) during translation.

2. A multi-legged coupled spoke wheel for a non-pneumatic tire according to claim 1, characterized in that, The opposite ends of the first leg structure (1) and the second leg structure (2) extend outward to form a first foot structure (5) and a second foot structure (6), respectively. The second coupling surface (21) is located on the inner side of the second foot structure (6) on the second leg structure (2).

3. A multi-legged coupled spoke wheel for a non-pneumatic tire according to claim 2, characterized in that, It also includes a fourth leg structure (4), which is connected to the first leg structure (1) in a V-shape. The fourth leg structure (4) and the third leg structure (3) are located on the same side. The end of the fourth leg structure (4) away from the first leg structure (1) is provided with a fifth coupling surface (41). A sixth coupling surface (52) is provided on the opposite side of the first leg structure (1) to the side where the fourth leg structure (4) is located. The fifth coupling surface (41) can coincide with the sixth coupling surface (52) during translation.

4. A multi-legged coupled spoke wheel for a non-pneumatic tire according to claim 3, characterized in that, The sixth coupling surface (52) is located on the inner side of the first leg structure (1) of the first leg structure (5).

5. A multi-legged coupled spoke wheel for a non-pneumatic tire according to claim 3, characterized in that, The lower end of the fourth leg structure (4) is fixedly connected to the nose curtain layer (8) located on the outer side of the first leg structure (1) opposite to the second leg structure (2). The first coupling surface (31) is provided on the lower end face of the third leg structure (3), and the fifth coupling surface (41) is provided on the upper end face of the fourth leg structure (4).

6. A multi-legged coupled spoke wheel for a non-pneumatic tire according to claim 3, characterized in that, The first coupling surface (31) and the fifth coupling surface (41) are both planar, arc-shaped or sawtooth-shaped, the shape of the second coupling surface (21) matches the shape of the first coupling surface (31), and the shape of the sixth coupling surface (52) matches the shape of the fifth coupling surface (41).

7. A multi-legged coupled spoke wheel for a non-pneumatic tire according to claim 2, characterized in that, A hollow structure (61) is provided on the end face of the second leg structure (6), and the hollow structure (61) is provided along the end of the second leg structure (6) near the inner side of the second leg structure (2).

8. A multi-legged coupled spoke wheel for a non-pneumatic tire according to claim 3, characterized in that, A third coupling surface (51) is provided at the outer end of the first leg structure (1) of the first leg structure (5), and a fourth coupling surface is provided at the inner side of the first leg structure (1) of the first leg structure (5). The third coupling surface (51) can coincide with the fourth coupling surface during translation.

9. A multi-legged coupled spoke wheel for a non-pneumatic tire according to claim 3, characterized in that, The first leg structure (1) has a first glass fiber reinforced structure (11), the second leg structure (2) has a second glass fiber reinforced structure (22), the third leg structure (3) has a third glass fiber reinforced structure (32), and the fourth leg structure (4) has a fourth glass fiber reinforced structure (42). The first glass fiber reinforced structure (11), the second glass fiber reinforced structure (22), the third glass fiber reinforced structure (32), and the fourth glass fiber reinforced structure (42) are all made of continuous glass fiber and epoxy vinyl ester resin composite.

10. A non-pneumatic tire, characterized in that, The system includes a tire belt surface (9), a rim structure (10) matching the tire belt surface (9), and a plurality of multi-leg coupled spokes as described in claim 8, wherein the plurality of multi-leg coupled spokes are distributed around the rim structure (10) between the tire belt surface (9) and the rim structure (10); the second support leg structure (6) is connected to the tire belt surface (9), the first support leg structure (5) is connected to the rim structure (10), and the first coupling surface (31) and the second coupling surface (21) on the connected third support leg structure (3) are connected end to end along the end face of the tire belt surface (9), the third coupling surface (51) and the fourth coupling surface on the connected first support leg structure (5) are connected end to end along the end face of the rim structure (10), or the fifth coupling surface (41) and the sixth coupling surface (52) on the connected fourth support leg structure (4) are connected end to end along the end face of the rim structure (10).

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