CN210101204U - Non-inflatable tyre and wheel - Google Patents

Abstract

The utility model discloses a non-pneumatic tire and a wheel. A first elastic object is arranged inside the carcass, so that the carcass presents an inner cavity structure, so that the carcass has a compression deformation space. In this way, when the carcass is subjected to a large impact force or travels on uneven roads, the stressed part of the carcass will deform inwardly into the inner cavity structure. Since the inner cavity structure is provided with a first elastic object, therefore, During the concave deformation process of the stressed part of the carcass, it will be elastically supported by the first elastic material, so that the impact energy acting on the carcass can be fully absorbed, effectively slowing down the deformation of the carcass, so that the tire body has good performance. buffer performance. In addition, a plurality of first elastics are arranged at intervals along the circumferential direction of the inner ring, so that the force distribution of the carcass is even, and the deformation of the carcass to different degrees due to different forces is avoided, thus causing the tire body to be in the running process. jitter occurs.

Description

Airless tires and wheels

technical field

The utility model relates to the technical field of tires, in particular to a pneumatic-free tire and a wheel.

Background technique

Pneumatic-free tires refer to tires that achieve shock absorption and cushioning performance without air pressure, that is, tires that only use the material and structure of the tire to achieve support and cushioning performance without inflation or air. In order to stably support the weight of the vehicle body, traditional pneumatic tires usually strengthen the structural strength of the tire material. However, when the non-pneumatic tire is subjected to a large impact during driving, due to the high rigidity of the tire itself, it is easy to directly transmit this part of the impact force to the user, so that the non-pneumatic tire cannot be simultaneously Take into account structural strength and cushioning performance.

Utility model content

Based on this, it is necessary to provide a pneumatic-free tire and wheel with both high structural strength and good cushioning performance.

Its technical solutions are as follows:

A non-pneumatic tire, comprising: a tire body, the tire body includes a carcass, the carcass is wound around to form an inner ring, the inner ring is used to install a wheel hub; and a plurality of first elastic objects, the An elastic body is arranged in the carcass, and a plurality of the first elastic bodies are arranged at intervals along the circumferential direction of the inner ring.

In the above-mentioned non-pneumatic tire, the first elastic material is arranged in the carcass, so that the external structure of the carcass maintains the integrity, which is conducive to maintaining good structural strength of the tire body, and avoids the structural strength of the tire body caused by the destruction of the external integrity of the carcass. Sharp drop; it also effectively avoids the tire body being easily trapped in sand and gravel due to the damage to the outside of the carcass. At the same time, a first elastic body is arranged inside the carcass, so that the carcass presents an inner cavity structure, so that the carcass has a compression deformation space. In this way, when the carcass is subjected to a large impact force or travels on uneven roads, the stressed part of the carcass will deform inwardly into the inner cavity structure. Since the inner cavity structure is provided with a first elastic object, therefore, During the concave deformation process of the stressed part of the carcass, it will be elastically supported by the first elastic material, so that the impact energy acting on the carcass can be fully absorbed, effectively slowing down the deformation of the carcass, so that the tire body has good performance. buffer performance. In addition, a plurality of first elastics are arranged at intervals along the circumferential direction of the inner ring, so that the force distribution of the carcass is even, and the deformation of the carcass to different degrees due to different forces is avoided, thus causing the tire body to be in the running process. jitter occurs.

In one embodiment, the pneumatic-free tire further includes a plurality of second elastic objects, the second elastic objects are disposed in the carcass, and the plurality of second elastic objects are along the circumferential direction of the inner ring interval setting.

In one embodiment, the first elastic objects and the second elastic objects are arranged in a one-to-one correspondence, and the first elastic objects and the second elastic objects are alternately arranged in the carcass at intervals.

In one embodiment, the second elastic body includes two or more elastic sub-elements, and the two or more elastic sub-elements are arranged at intervals along the radial direction of the inner ring.

In one embodiment, the inside of the second elastic body is a multi-cavity structure, a hollow structure or a solid structure.

In one embodiment, the pneumatic-free tire further comprises a connecting piece, the connecting piece is arranged in the carcass, and the plurality of first elastic objects are connected together through the connecting piece.

In one embodiment, the interior of the first elastic body is a multi-cavity structure, a hollow structure or a solid structure.

In one embodiment, a first arched protrusion is provided on the tread surface of the carcass, and a second arched protrusion is provided on one side of the carcass close to the inner ring.

In one of the embodiments, two opposite sidewalls of the carcass are arcuate surfaces.

A wheel includes a wheel hub and any one of the above-mentioned pneumatic-free tires, wherein the carcass is sleeved on the wheel hub through the inner ring.

The above-mentioned wheel adopts the above-mentioned non-pneumatic tire, and the first elastic material is arranged in the carcass, so that the external structure of the carcass maintains the integrity, which is conducive to maintaining good structural strength of the tire body and avoids damage due to the destruction of the external integrity of the carcass. As a result, the structural strength of the tire body decreases sharply; it also effectively avoids the tire body being easily trapped in sand and gravel due to the damage to the outside of the tire body. At the same time, a first elastic body is arranged inside the carcass, so that the carcass presents an inner cavity structure, so that the carcass has a compression deformation space. In this way, when the carcass is subjected to a large impact force or travels on uneven roads, the stressed part of the carcass will deform inwardly into the inner cavity structure. Since the inner cavity structure is provided with a first elastic object, therefore, During the concave deformation process of the stressed part of the carcass, it will be elastically supported by the first elastic material, so that the impact energy acting on the carcass can be fully absorbed, effectively slowing down the deformation of the carcass, so that the tire body has good performance. buffer performance. In addition, a plurality of first elastics are arranged at intervals along the circumferential direction of the inner ring, so that the force distribution of the carcass is even, and the deformation of the carcass to different degrees due to different forces is avoided, thus causing the tire body to be in the running process. jitter occurs.

A method for manufacturing a non-pneumatic tire, comprising the steps of: arranging a first elastic object in a mold cavity, and distributing a plurality of the first elastic objects at intervals along the circumferential direction of the mold cavity; setting the first elastic object After an elastic body, the processing material is injected into the mold cavity.

In the above-mentioned manufacturing method of a pneumatic-free tire, before the pneumatic-free tire is formed, a first elastic object is pre-arranged in the mold, and a plurality of first elastic objects are arranged at intervals along the circumferential direction of the mold cavity. When the material is processed, the first elastic body is stably arranged in the carcass, so that the structure of the obtained non-pneumatic tire is more stable. Since the first elastic material is arranged inside the carcass, the carcass presents an inner cavity structure, so that the carcass has a compression deformation space. In this way, when the carcass is subjected to a large impact force or travels on uneven roads, the stressed part of the carcass will deform inwardly into the inner cavity structure. Since the inner cavity structure is provided with a first elastic object, therefore, During the concave deformation process of the stressed part of the carcass, it will be elastically supported by the first elastic material, so that the impact energy acting on the carcass can be fully absorbed, effectively slowing down the deformation of the carcass, so that the tire body has good performance. buffer performance.

In one embodiment, the step of disposing the first elastic objects in the mold cavity, and distributing a plurality of the first elastic objects at intervals along the circumference of the mold cavity includes: disposing a plurality of first elastic objects in the fixed mold cavity A plurality of fixed pins are arranged at intervals along the circumference of the fixed mold cavity; the first elastic objects are arranged on the fixed pins in a one-to-one correspondence, and the movable mold is attached to the fixed mold.

Description of drawings

FIG. 1 is a schematic structural diagram of a pneumatic tire according to an embodiment of the present utility model;

2 is a schematic diagram of the internal structure of a pneumatic tire according to an embodiment of the present utility model;

3 is a schematic cross-sectional view of a non-pneumatic tire when the interior of the first elastic body according to an embodiment of the present invention is a hollow structure and a multi-cavity structure respectively;

4 is a schematic diagram of two cross-sections of the air-free tire when the first elastic body is in the shape of a convex lens according to an embodiment of the present invention;

5 is a schematic diagram of two cross-sections of a pneumatic tire when the first elastic body is in the shape of a concave lens according to an embodiment of the present invention;

6 is a schematic diagram of two cross-sections of a pneumatic tire when the first elastic body is a quadrilateral according to an embodiment of the present invention;

7 is a schematic diagram of two cross-sections of a pneumatic tire when the first elastic body is a pentagon according to an embodiment of the present invention;

8 is a schematic diagram of three cross-sections of a pneumatic tire according to an embodiment of the present invention when the first elastic material is an equilateral triangle and the second elastic material is an inverted triangle;

9 is a schematic diagram of three cross-sections of a pneumatic tire according to an embodiment of the present invention when the first elastic object is in the shape of a convex lens and the second elastic object is in the shape of a double circular hole;

10 is a flowchart of a method for manufacturing a pneumatic-free tire according to an embodiment of the present invention;

FIG. 11 is a specific flowchart of a method for manufacturing a pneumatic-free tire according to an embodiment of the present invention.

Description of reference numbers:

100, air-free tire, 110, tire body, 111, carcass, 1111, first arched protrusion, 1112, second arched protrusion, 1113, arched surface, 1114, support portion, 112, inner ring, 120, a first elastic object, 130, a second elastic object, 131, an elastic part, 140, a connecting piece.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and do not limit the protection scope of the present invention.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The "first" and "second" mentioned in the present utility model do not represent a specific quantity and order, but are only used for the distinction of names.

In one embodiment, please refer to FIGS. 1 and 2 , a pneumatic-free tire 100 includes a tire body 110 and a plurality of first elastic objects 120 . The tire body 110 includes a carcass 111 . The carcass 111 is wound around to form an inner ring 112 . The inner ring 112 is used to fit into the hub. The first elastic objects 120 are arranged in the carcass 111 , and a plurality of first elastic objects 120 are arranged at intervals along the circumferential direction of the inner ring 112 .

In the above-mentioned non-pneumatic tire 100, the first elastic material 120 is arranged in the carcass 111, so that the external structure of the carcass 111 maintains the integrity, which is conducive to maintaining good structural strength of the tire body 110 and avoids being damaged due to the external integrity of the carcass 111. The structural strength of the tire body 110 is sharply reduced due to the damage; it is also effectively avoided that the tire body 110 is easily trapped in sand and gravel due to the external damage of the carcass 111 . At the same time, the first elastic material 120 is arranged inside the carcass 111 , so that the carcass 111 presents an inner cavity structure, so that the carcass 111 has a compression deformation space. In this way, when the carcass 111 is subjected to a large impact force or travels on an uneven road, the stressed part of the carcass 111 will deform inwardly into the inner cavity structure, because the inner cavity structure is provided with the first elastic material 120 , therefore, during the concave deformation of the stressed part of the carcass 111, it will be elastically supported by the first elastic material 120, so that the impact energy acting on the carcass 111 can be fully absorbed, effectively slowing down the deformation of the carcass 111. , so that the tire body 110 has good cushioning performance. In addition, the supporting portion 1114 of the carcass 111 is left between the two adjacent first elastic objects 120, therefore, when the carcass 111 is subjected to a large impact force or is driven on an uneven road, the carcass 111 will be stressed Parts are also supported by the two support parts 1114 , so that the deformation of the stressed part on the carcass 111 is also buffered to a certain extent, so that the tire body 110 has better buffering performance. In addition, in this embodiment, the plurality of first elastic objects 120 are arranged at intervals along the circumferential direction of the inner ring 112, so that the force distribution of the carcass 111 is uniform, and the deformation of the carcass 111 to different degrees due to different forces is avoided. As a result, the tire body 110 vibrates during the running process.

Optionally, the cross section of the first elastic object 120 is a circle, an ellipse, a polygon, a convex shape, a convex lens shape, a concave lens shape or other shapes, and the specific structure may refer to FIGS. 7( a ) are partial views formed by cutting along the radial direction of the non-pneumatic tire 100 ; view. Meanwhile, the material of the first elastic body 120 may be TPE (Thermoplastic Elastomer), TPU (Thermoplastic polyurethanes), TPR thermoplastic rubber, foamed plastic or other elastic materials. In addition, the number of the first elastic bodies 120 is 18 to 60. It should be noted that the cross-section of the first elastic material 120 is a cross-section formed by cutting the first elastic material 120 along the circumferential direction of the non-pneumatic tire 100 .

Optionally, the first elastic body 120 may further include two or more elastic members, and the two or more elastic members are arranged at intervals along the radial direction of the inner ring 112 . It can be seen that the elastic members are formed from the tread of the carcass 111 . The side of the carcass 111 close to the inner ring 112 is spaced apart. When the elastic member close to the tread absorbs a part of the impact force, the remaining impact force continues to be transmitted to the inner ring 112. Since the elastic member is along the radial direction of the inner ring 112 Therefore, the residual impact force absorbed by the elastic piece close to the table surface acts on the elastic piece close to the inner ring 112. In this way, when the carcass 111 is subjected to a large impact force or is driven on an uneven road, the The impact force will be weakened and damped by two or more elastic members layer by layer, so that the impact force cannot be transmitted to the rider or a very small part of the impact force is transmitted to the rider, which greatly improves the performance of the air-free tire 100 . Wherein, the cross-sectional shape of the elastic member may be a circle, an ellipse, a polygon, a convex shape, a convex lens shape, a concave lens shape or other shapes. Meanwhile, the number of elastic members is 1 to 5. It should be noted that the cross-section of the elastic member is a cross-section formed by cutting the elastic member along the circumferential direction of the non-pneumatic tire 100 .

Further, please refer to FIGS. 2 , 8 and 9 , the non-pneumatic tire 100 further includes a plurality of second elastic objects 130 . The second elastic objects 130 are arranged in the carcass 111 , and a plurality of second elastic objects 130 are arranged at intervals along the circumferential direction of the inner ring 112 . It can be seen from this that the second elastic material 130 is arranged inside the carcass 111, so that the carcass 111 presents an inner cavity structure. The force part will be deformed concavely toward the inner cavity structure. Since the inner cavity structure is provided with the second elastic material 130, the part of the tire body 111 subjected to the force will be subjected to the elasticity of the second elastic material 130 during the concave deformation process. Support, so that the impact energy acting on the carcass 111 is fully absorbed, and the deformation of the carcass 111 is effectively slowed down, so that the tire body 110 has good cushioning performance. In this way, in this embodiment, the first elastic material 120 and the second elastic material 130 are arranged on the carcass 111 , so that the carcass 111 has better cushioning and shock absorption performance, which is beneficial to improve the user experience of the pneumatic-free tire 100 . Wherein, the material of the second elastic material 130 may be TPE (Thermoplastic Elastomer), TPU (Thermoplastic polyurethanes), TPR thermoplastic rubber, foamed plastic or other elastic materials. It should be noted that FIGS. 8( a ) and 9 ( a ) are partial views formed by cutting along the radial direction of the pneumatic-free tire 100 ; FIGS. 8 ( b ) and 9 ( b ) are both along the A partial view of the pneumatic tire 100 cut in the circumferential direction; FIG. 8( c ) and FIG.

Furthermore, the first elastic objects 120 and the second elastic objects 130 are arranged in a one-to-one correspondence, and the first elastic objects 120 and the second elastic objects 130 are alternately arranged in the carcass 111 at intervals. It can be seen from this that the second elastic objects 130 are respectively provided at both ends of the first elastic object 120, or the first elastic objects 120 are respectively provided at both ends of the second elastic object 130. In this way, when the carcass 111 is subjected to a large impact force Or when driving on uneven roads, the second elastics 130 at both ends will share part of the impact force acting on the first elastics 120 , or the first elastics 120 at both ends will share part of the impact on the second elastics 130 Therefore, the first elastic body 120 and the second elastic body 130 cooperate to reduce the impact force during driving, so that the air-free tire 100 can achieve better shock absorption and buffering, thereby further improving the users of the air-free tire 100. experience. Wherein, the cross-sectional shapes of the first elastic object 120 and the second elastic object 130 may be circular, elliptical, polygonal, convex, convex, concave, or other shapes. Specifically in this embodiment, the cross-sectional shape of the first elastic object 120 is a convex lens shape, and the cross-sectional shape of the second elastic object 130 is a concave lens shape; or, the cross-sectional shape of the first elastic object 120 is a concave lens shape, and the second elastic object 130 The cross-sectional shape of the first elastic object 120 is a convex lens shape; or, the cross-sectional shape of the first elastic object 120 is an equilateral triangle, and the cross-sectional shape of the second elastic object 130 is an inverted triangle. It should be noted that the section of the first elastic object 120 is a section formed by cutting the first elastic object 120 along the circumferential direction of the pneumatic-free tire 100 ; A cross section formed by cutting the second elastic body 130 in the circumferential direction.

In another embodiment, two or more second elastic objects 130 are disposed between two adjacent first elastic objects 120 ; or two or more first elastic objects 130 are disposed between two adjacent second elastic objects 130 . Elastic 120.

In one embodiment, please refer to FIG. 9 , the second elastic body 130 includes two or more elastic sub-elements 131 , and the two or more elastic sub-elements 131 are arranged at intervals along the radial direction of the inner ring 112 . It can be seen from this that the elastic parts 131 are spaced from the tread of the carcass 111 to the side of the carcass 111 close to the inner ring 112. When the elastic parts 131 close to the tread absorb a part of the impact force, the remaining impact force is Continue to transmit in the direction of the inner ring 112. Since the elastic sub-pieces 131 are arranged radially spaced along the inner ring 112, the residual impact force absorbed by the elastic sub-parts 131 close to the table surface acts on the elastic sub-parts 131 close to the inner ring 112. In this way, when the carcass 111 is subjected to a large impact force or is driven on an uneven road, the impact force will be weakened and damped by two or more elastic components 131 layer by layer, so that the impact force cannot be transmitted to the The rider or a very small part of the impact force is transmitted to the rider, which greatly improves the performance of the non-pneumatic tire 100 . The cross-sectional shape of the elastic component 131 may be a circle, an ellipse, a polygon, a convex shape, a convex lens shape, a concave lens shape or other shapes. It should be noted that the section of the elastic sub-piece 131 is a section formed by cutting the elastic sub-section 131 along the circumferential direction of the pneumatic-free tire 100 .

In one embodiment, the inside of the second elastic body 130 is a multi-cavity structure, a hollow structure or a solid structure. Wherein, when the second elastic material 130 is a solid structure, the elasticity of the second elastic material 130 is better than that of the carcass 111 .

In one embodiment, referring to FIG. 2 , the pneumatic-free tire 100 further includes a connecting member 140 . The connector 140 is provided in the carcass 111 . The plurality of first elastic objects 120 are connected together by connecting members 140 . In this way, the plurality of first elastic objects 120 are connected to each other through the connecting member 140 to form an integrated structure, so that the force on one of the first elastic objects 120 is quickly distributed on the other first elastic objects 120, which is beneficial to the stress bearing. The transmission is smooth and the distribution is even, which greatly improves the shock absorption and cushioning performance of the air-free tire 100 . At the same time, the plurality of first elastic objects 120 are stably connected through the connecting member 140 , which is also beneficial to improve the overall structural strength of the pneumatic-free tire 100 . In addition, through the connecting member 140 , it is also convenient for the first elastic body 120 to be stably supported in the mold cavity during the molding process of the pneumatic-free tire 100 , which is conducive to the rapid completion of the manufacturing process of the pneumatic-free tire 100 . Specifically, in this embodiment, the plurality of second elastic objects 130 are also connected together through the connecting member 140 .

In one embodiment, please refer to FIG. 3 , the interior of the first elastic body 120 is a multi-cavity structure, a hollow structure or a solid structure. Wherein, when the first elastic material 120 is a solid structure, the elasticity of the first elastic material 120 is better than the elasticity of the carcass 111 .

In one embodiment, please refer to FIG. 1 , the tread surface of the carcass 111 is provided with a first arched protrusion 1111 , and a side of the tire body 111 close to the inner ring 112 is provided with a second arched protrusion 1112 . Since the wheel hub is installed at the inner ring 112 of the carcass 111, and the tread of the carcass 111 is in direct contact with the road surface, the inner and outer sides of the carcass 111 are the main stress-bearing parts. There are raised structures on the sides, which thicken the two parts of the carcass 111, so that the structural strength of the inner and outer sides of the carcass 111 is effectively strengthened, preventing the air-free tire 100 from breaking due to insufficient thickness during driving. , in this way, it is beneficial to prolong the service life of the air-free tire 100 . At the same time, the protrusions in this embodiment are all arched structures, which is beneficial to ensure that the air-free tire 100 is more stable during the running process.

In one embodiment, please refer to FIG. 4 , two opposite sidewalls of the carcass 111 are arcuate surfaces 1113 . In this embodiment, both sidewalls of the carcass 111 are designed as arched surfaces 1113 , so that both sidewalls have good elasticity, thereby further improving the shock absorption and cushioning performance of the pneumatic-free tire 100 .

In one embodiment, please refer to FIG. 1 and FIG. 2 , a wheel includes a wheel hub and the pneumatic-free tire 100 in any of the above embodiments. The carcass 111 is sleeved on the wheel hub through the inner ring 112 .

The above-mentioned wheel adopts the above-mentioned non-pneumatic tire 100, and the first elastic material 120 is arranged in the carcass 111, so that the external structure of the carcass 111 can maintain the integrity, which is beneficial to the tire body 110 to maintain a good structural strength, and avoids the damage caused by the carcass. The external integrity of the tire body 111 is destroyed, resulting in a sharp decrease in the structural strength of the tire body 110 . At the same time, the first elastic material 120 is arranged inside the carcass 111 , so that the carcass 111 presents an inner cavity structure, so that the carcass 111 has a compression deformation space. In this way, when the carcass 111 is subjected to a large impact force or travels on an uneven road, the stressed part of the carcass 111 will deform inwardly into the inner cavity structure, because the inner cavity structure is provided with the first elastic material 120 , therefore, during the concave deformation of the stressed part of the carcass 111, it will be elastically supported by the first elastic material 120, so that the impact energy acting on the carcass 111 can be fully absorbed, effectively slowing down the deformation of the carcass 111. , so that the tire body 110 has good cushioning performance. In addition, the plurality of first elastics 120 are arranged at intervals along the circumferential direction of the inner ring 112, so that the force distribution of the carcass 111 is uniform, and the deformation of the carcass 111 to different degrees due to different forces is avoided, thereby causing the tire The body 110 shakes during driving.

In one embodiment, please refer to FIG. 1 , FIG. 2 and FIG. 10 , a method for manufacturing a pneumatic-free tire 100 includes the following steps:

S10: disposing the first elastic objects 120 in the mold cavity, and distributing the plurality of first elastic objects 120 at intervals along the circumferential direction of the mold cavity;

S20: After setting the first elastic body 120, inject the processing material into the mold cavity.

In the above-mentioned manufacturing method of the pneumatic-free tire 100, before the pneumatic-free tire 100 is formed, the first elastic objects 120 are arranged in the mold in advance, and the plurality of first elastic objects 120 are arranged at intervals along the circumferential direction of the mold cavity. When the processing material is injected into the mold, the first elastic body 120 is stably disposed in the carcass 111 , so that the structure of the resulting non-pneumatic tire 100 is more stable. Since the first elastic material 120 is arranged inside the carcass 111, the carcass 111 presents an inner cavity structure, so that the carcass 111 has a compression deformation space. In this way, when the carcass 111 is subjected to a large impact force or travels on an uneven road, the stressed part of the carcass 111 will deform inwardly into the inner cavity structure, because the inner cavity structure is provided with the first elastic material 120 , therefore, during the concave deformation of the stressed part of the carcass 111, it will be elastically supported by the first elastic material 120, so that the impact energy acting on the carcass 111 can be fully absorbed, effectively slowing down the deformation of the carcass 111. , so that the tire body 110 has good cushioning performance. Wherein, the processing material can be natural rubber, synthetic rubber or reclaimed rubber.

Further, referring to FIG. 11 , the steps of disposing the first elastic objects 120 in the mold cavity and distributing the plurality of first elastic objects 120 at intervals along the circumferential direction of the mold cavity S10 include: disposing multiple first elastic objects 120 in the fixed mold cavity at intervals S10 . A plurality of fixed pins are arranged at intervals along the circumference of the fixed mold cavity S11 ; the first elastics 120 are arranged on the fixed pins in a one-to-one correspondence, and the movable mold is attached to the fixed mold S12 . In this way, by fixing the needle, the first elastic object 120 is more stably disposed in the mold cavity, which is beneficial to the more stable operation of the manufacturing process of the air-free tire 100 . Specifically, in this embodiment, in order to hide the fixing needle and leave a gap on the pneumatic-free tire 100 , in this embodiment, the position of the fixing needle is slidably arranged inside the fixed mold cavity, that is, corresponding to the inner ring 112 of the pneumatic-free tire 100 . side. After the raw material is injected, the fixed needle is pushed out of the fixed mold through the sliding block or the ejector pin structure, so that the pneumatic-free tire 100 can be taken out from the fixed mold.

In another embodiment, the step of disposing the first elastic objects 120 in the mold cavity and distributing the plurality of first elastic objects 120 at intervals along the circumferential direction of the mold cavity S10 includes: disposing the pre-prepared pneumatic tires A part of the tire 100 is placed in the cavity of the fixed mold; after the placement, the first elastic body 120 is placed on a part of the non-pneumatic tire 100, and the movable mold is attached to the fixed mold. It can be seen from this that the preparation of the pneumatic-free tire 100 of the present embodiment adopts a step-by-step preparation method. First, a part of the pneumatic-free tire 100 is prepared, and the prepared part is placed in the fixed mold cavity, and then the first elastic material 120 is placed in the mold cavity. On the part of the air-free tire 100 , the mold is closed, and raw materials are injected to complete the preparation process of the air-free tire 100 . The step-by-step preparation method of this embodiment can ensure the surface integrity of the air-free tire 100 .

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present utility model, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, some modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for this utility model shall be subject to the appended claims.

Claims (10)

1. A pneumatic tire, characterized in that, comprising: a tire body, the tire body comprising a carcass, the carcass is wound around to form an inner ring, and the inner ring is used to fit into a wheel hub; and A plurality of first elastic objects are arranged in the carcass, and the plurality of first elastic objects are arranged at intervals along the circumferential direction of the inner ring. 2 . The pneumatic-free tire according to claim 1 , further comprising a plurality of second elastic objects, the second elastic objects are arranged in the carcass, and the plurality of the second elastic objects are along the The inner rings are arranged at intervals in the circumferential direction. 3 . The pneumatic-free tire of claim 2 , wherein the first elastic objects and the second elastic objects are arranged in a one-to-one correspondence, and the first elastic objects and the second elastic objects alternate. 4 . Spacers are provided within the carcass. 4 . The air-free tire according to claim 2 , wherein the second elastic material comprises two or more elastic sub-parts, and the two or more elastic sub-parts are arranged at intervals along the radial direction of the inner ring. 5 . . 5 . The pneumatic-free tire according to claim 2 , wherein the inside of the second elastic body is a multi-cavity structure, a hollow structure or a solid structure. 6 . 6 . The pneumatic-free tire according to claim 1 , further comprising a connecting piece, wherein the connecting piece is arranged in the carcass, and a plurality of the first elastic objects are connected together by the connecting piece. 7 . 7 . The pneumatic-free tire according to claim 1 , wherein the inside of the first elastic body is a multi-cavity structure, a hollow structure or a solid structure. 8 . 8 . The air-free tire according to claim 1 , wherein a first arched protrusion is provided on the tread surface of the carcass, and the carcass is close to one of the inner rings. 9 . A second arch-shaped protrusion is arranged on the side. 9 . The pneumatic-free tire according to claim 1 , wherein two opposite sidewalls of the carcass are both arcuate surfaces. 10 . 10. A wheel, characterized in that it comprises a wheel hub and the pneumatic-free tire according to any one of claims 1-9, and the carcass is sleeved on the wheel hub through the inner ring.

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