CN108407549B - Non-pneumatic tire and method for assembling and disassembling the same - Google Patents
Non-pneumatic tire and method for assembling and disassembling the same Download PDFInfo
- Publication number
- CN108407549B CN108407549B CN201810402771.1A CN201810402771A CN108407549B CN 108407549 B CN108407549 B CN 108407549B CN 201810402771 A CN201810402771 A CN 201810402771A CN 108407549 B CN108407549 B CN 108407549B
- Authority
- CN
- China
- Prior art keywords
- support body
- tire
- type
- rubber bushing
- body unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C7/00—Non-inflatable or solid tyres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C25/00—Apparatus or tools adapted for mounting, removing or inspecting tyres
- B60C25/01—Apparatus or tools adapted for mounting, removing or inspecting tyres for removing tyres from or mounting tyres on wheels
- B60C25/02—Tyre levers or the like, e.g. hand-held
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
The invention relates to a non-pneumatic tire and a disassembly and assembly method thereof, comprising a tread contacted with the ground, wherein the tread is sequentially connected with a first type of tire body, a second type of tire body and an inner tire ring of the tire, the first type of tire body is uniformly provided with two circles of regular hexagon grooves along the circumferential direction, a rubber bushing is embedded in the outer ring of regular hexagon grooves, and a supporting framework is arranged in the rubber bushing; the second type of tire body is formed by a first support body unit and a second support body unit which are uniformly distributed along the circumference and are mutually connected, the first support body unit and the second support body unit have the same structure, the upper parts of the first support body unit and the second support body unit are in an upward convex arch shape, the lower parts of the first support body unit and the second support body unit are in a downward concave arch shape, and the first support body unit and the second support body unit are connected in a radial staggered manner.
Description
Technical Field
The invention relates to the technical field of automobile tires, in particular to a non-pneumatic tire and a disassembly and assembly method thereof.
Background
The automobile tyre is one of important parts of the automobile, and is in direct contact with the road surface, and the automobile tyre and the automobile suspension jointly alleviate the impact suffered by the automobile during running, so that the automobile is guaranteed to have good riding comfort and running smoothness, good adhesiveness between wheels and the road surface is guaranteed, the traction, braking performance and passing performance of the automobile are improved, the weight of the automobile is borne, and the important role played by the tyre on the automobile is increasingly received by people. The non-pneumatic tire eliminates compressed air which is an important component of the pneumatic tire, and instead, the tire and the rim are integrally designed, and when the non-pneumatic tire is subjected to impact load in the longitudinal direction, the internal support structure of the non-pneumatic tire can have a much larger variable than that of a common pneumatic tire, so that the road impact of a rugged road surface transmitted to a suspension and a vehicle body through the tire is relieved, and the comfort performance of the vehicle is improved.
Most of non-inflatable or airless tires in the prior art are solid matters, the structure causes great damage to a vehicle suspension system, so that passenger riding comfort is poor, the suspension is required to compensate the solid tires, the teaching and matching difficulty of the suspension is increased, when the load or the speed is high, the deformation of the non-inflatable tires is high, the elastic deformation and the fatigue strength of supporting members of the non-inflatable tires are increased, the rubber materials are aged, in addition, the rigidity of the non-inflatable tires can be well adapted to the stability of a highway, the oil consumption is reduced, the road surface can be damaged when the vehicle runs on a soft road surface, and the road adaptability is poor when the vehicle runs on a snowy muddy road surface.
Disclosure of Invention
The applicant provides a non-pneumatic tire with reasonable structure aiming at the defects in the prior art, the loading capacity, the damping effect and the wear resistance of the tire are improved, meanwhile, the rigidity of the tire can be adjusted aiming at different road conditions, the adaptability of the tire to the road is improved, the riding comfort is improved, and the running safety of an automobile is enhanced.
The technical scheme adopted by the invention is as follows:
a non-pneumatic tire comprises a tread which is contacted with the ground, wherein the inner circumferential surface of the tread is connected with a first type of tire body in a circular ring structure, the inner circumferential surface of the first type of tire body is connected with a second type of tire body, and the inner circumferential surface of the second type of tire body is connected with a tire inner ring; two circles of regular hexagon grooves are uniformly formed in the first type of tire body along the circumferential direction, wherein a rubber bushing is embedded in the regular hexagon groove of the outer ring, and a supporting framework is arranged in the rubber bushing; the second type of carcass consists of a plurality of first support body units and two support body units, wherein a two-circle annular structure is formed in the circumferential direction; the structures of the first support body unit and the second support body unit are the same, the upper parts of the first support body unit and the second support body unit are in an upward convex arch shape, the lower parts of the first support body unit and the second support body unit are in a downward concave arch shape, and the downward concave arch shape of each first support body unit is connected with the upward convex arch shape of the two adjacent second support body units.
The further technical scheme is as follows:
the convex arches of all support body units jointly enclose the outer circumferential surface of the second type of tire body, the concave arches of all support body units jointly enclose the inner circumferential surface of the second type of tire body, the outer circumferential surface is connected with the inner circumferential surface of the tread, and the inner circumferential surface is connected with the outer circumferential surface of the tire inner ring.
The included angles formed by the connection lines between the tangent lines of the connection points of the upper convex arch and the lower concave arch and the two connection points are beta and alpha respectively, wherein alpha is larger than beta, and the sum of alpha and beta is smaller than 150 degrees.
The regular hexagon groove is symmetrically formed along two circular faces of the first type of tire body, a concave table is arranged at the top end of a notch of the regular hexagon groove of the outer ring, the rubber bushing is clamped on the concave table and in interference fit with the concave table, the outer side of the rubber bushing is regular hexagon, the inner side of the rubber bushing is circular, a supporting framework in interference fit with the rubber bushing is arranged inside the rubber bushing, and the supporting framework is a circular ring made of hard alloy materials.
The outer layers of the first support body unit and the second support body unit adopt outer rubber cord layers, the middle layer adopts a hard framework layer, and the inner layer adopts an inner rubber cord layer.
The two support body units and one support body unit have the same structure, the sizes are in equal ratio, and the corresponding arc length ratio is 0.61-0.9.
The inner ring regular hexagon and the outer ring regular hexagon of the first type of tire body are in equal ratio, and the side length ratio is in the range of 0.5-0.85.
The method for disassembling and assembling the non-pneumatic tire comprises the following specific steps:
the first step: removing the tyre to be removed from the ground;
and a second step of: tilting one end of the rubber bushing to separate the tilted part of the rubber bushing from the regular hexagonal groove of the outer ring, and clamping the separated part by using a screwdriver to form a gap;
and a third step of: inserting another screwdriver into the gap of the second step, sliding for one circle to completely separate the rubber bushing from the second type of matrix, and then pulling out the rubber bushing and the supporting framework;
fourth step: sequentially removing other rubber bushings and supporting frameworks according to the second step and the third step;
fifth step: and sequentially clamping the assembled rubber bushing and the support framework into the regular hexagonal groove of the outer ring, so that the disassembly and assembly process is completed.
The beneficial effects of the invention are as follows:
the invention has reasonable structure, the tread and the tire inner ring are connected into the non-pneumatic tire with the integral net structure through the regular hexagon groove on the first type tire body and the supporting body unit structure of the second type tire body, the detachable rubber bushing and the supporting framework are arranged in the regular hexagon groove, and the invention has the specific advantages that the assembly and the disassembly are convenient, as follows:
1. the overall net structure formed by the regular hexagon grooves of the first type of tire body, the first support body units and the second support body units of the second type of tire body improves the shock absorption capacity of the tire; the number of the regular hexagons, the first support body units and the second support body units on the tire body can be adjusted according to the requirements, so that the requirements of different rigidities and loads are met;
2. the rubber bushing and the supporting framework are integrally and conveniently detached, when the rubber bushing and the supporting framework are assembled, the rigidity of the tire is improved, the loading capacity is high, the stability is high when the tire runs at a high speed on a highway, when the rubber bushing and the supporting framework are disassembled, the rigidity of the tire is reduced, the adhesive force is enhanced, the contact area between the tire and a road surface is increased, the tire can be better adapted to a soft road surface and a snow-covered road surface, and the damage to the soft road surface is reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic diagram of angles between a support unit and two support units α, β according to the present invention.
Fig. 3 is a schematic structural view of a support unit and two support units according to the present invention.
FIG. 4 is a schematic view of a partial structure of the present invention without the rubber bushing.
FIG. 5 is a schematic view of a part of the structure of the rubber bushing and the supporting framework of the present invention.
Wherein: 1. a tread; 2. a first type carcass; 3. a second type carcass; 4. an inner tire ring; 21. regular hexagonal grooves; 22. a rubber bushing; 23. a support skeleton; 31. a support body unit; 32. two support body units; 211. a concave table; 311. an outer rubber cord layer; 312. a hard skeleton layer; 313. an inner rubber cord layer.
Detailed Description
The following describes specific embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the non-pneumatic tire comprises a tread 1 which is in contact with the ground, wherein the inner circumferential surface of the tread 1 is connected with a first type of tire body 2 which is in a circular ring structure, the inner circumferential surface of the first type of tire body 2 is connected with a second type of tire body 3, and the inner circumferential surface of the second type of tire body 3 is connected with a tire inner ring 4; two circles of regular hexagon grooves 21 are uniformly formed in the first type of carcass 2 along the circumferential direction, wherein a rubber bushing 22 is embedded in the regular hexagon grooves 21 of the outer ring, and a supporting framework 23 is arranged in the rubber bushing 22; the second type carcass 3 is composed of a plurality of first support body units 31 and two support body units 32, and forms a two-circle annular structure in the circumferential direction, the plurality of first support body units 31 are uniformly distributed along the circumference and are mutually connected, the plurality of second support body units 32 are uniformly distributed along the circumferential direction and are mutually connected, and the first support body units 31 and the second support body units 32 are mutually staggered and connected along the radial direction; the structures of the first support body unit 31 and the second support body unit 32 are the same, the upper part of the first support body unit is in an upward convex arch shape, the lower part of the first support body unit is in a downward concave arch shape, and the downward concave arch shape of each first support body unit 31 is connected with the upward convex arch shapes of the two adjacent second support body units 32; the convex arches of all the support body units 31 jointly enclose the outer circumferential surface of the second type carcass 3, the concave arches of all the two support body units 32 jointly enclose the inner circumferential surface of the second type carcass 3, the outer circumferential surface is connected with the inner circumferential surface of the tread 1, and the inner circumferential surface is connected with the outer circumferential surface of the inner tire ring 4.
As shown in fig. 2, the included angles formed by the connection lines between the tangent lines of the convex arch and the concave arch of the first support unit 31 at the connection points and the two connection points are respectively β and α, the values of which are respectively 45 ° and 90 °, the two support units 32 and the first support unit 31 have the same structure and have the same size in an equal ratio relationship, and the corresponding arc length ratio is 0.8.
As shown in fig. 3, the outer layers of the first and second support units 31 and 32 are made of an outer rubber cord layer 311, the middle layer is made of a hard skeleton layer 312, and the inner layer is made of an inner rubber cord layer 313.
As shown in fig. 4 and 5, a concave table 211 is arranged at the top end of a notch of a regular hexagonal groove 21 of the outer ring, a rubber bushing 22 is clamped on the concave table 211 and is in interference fit with the concave table 211, the outer side of the rubber bushing 22 is regular hexagonal, the inner side of the rubber bushing 22 is circular, a supporting framework 23 in interference fit with the rubber bushing 22 is arranged in the rubber bushing 22, and the supporting framework 23 is a circular ring made of hard alloy materials; the regular hexagonal grooves 21 are symmetrically arranged along the two circular surfaces of the first type carcass 2, the sizes of the inner ring regular hexagon and the outer ring regular hexagon are in equal ratio, and the side length ratio is 0.78.
The tread 1 is provided with a tread pattern on the outer circumference, and the tread 1, the first type carcass 2, the second type carcass 3 and the inner tire ring 4 may be integrally formed of a thermoplastic material, for example, a thermoplastic elastomer, a thermoplastic vulcanized rubber or a thermoplastic polyurethane, which is integrally formed by injection molding or compression molding, and then cooled and solidified.
The method for assembling and disassembling the non-pneumatic tire of the present embodiment mainly comprises the following steps of:
the first step: removing the tyre to be removed from the ground;
and a second step of: tilting one end of the rubber bush 22 to separate the tilted part of the rubber bush 22 from the outer ring regular hexagon groove 21, and clamping the separated part by a screwdriver to form a gap;
and a third step of: inserting another screwdriver into the gap of the second step, sliding for one circle to completely separate the rubber bush 22 from the second type carcass 3, and then pulling out the rubber bush 22 and the supporting framework 23;
fourth step: sequentially removing the other rubber bushings 22 and the supporting framework 23 according to the second step and the third step;
fifth step: the assembled rubber bushing 22 and the support framework 23 are clamped into the outer ring regular hexagon groove 21 in sequence, and the disassembly and assembly process is completed.
When the rubber bushing 22 and the supporting framework 23 arranged in the rubber bushing are embedded into the outer ring regular hexagon groove 21, the rigidity of the non-pneumatic tire is increased, and the load capacity is high and the stability is good during road running; after the rubber bush 22 and the supporting framework 23 arranged in the rubber bush are disassembled, the rigidity of the non-pneumatic tire is reduced, the contact area between the tread 1 and the road surface is increased, the acting force of the road surface in unit area is reduced, the adhesive force is enhanced, and the rubber bush is suitable for running on a soft road surface or a snow-covered road surface.
The above description is intended to illustrate the invention and not to limit it, the scope of which is defined by the claims, and any modifications can be made within the scope of the invention.
Claims (4)
1. A non-pneumatic tyre comprising a tread (1) in contact with the ground, characterized in that: the inner circumferential surface of the tread (1) is connected with a first type of tire body (2) in a circular ring structure, the inner circumferential surface of the first type of tire body (2) is connected with a second type of tire body (3), and the inner circumferential surface of the second type of tire body (3) is connected with a tire inner ring (4); two circles of regular hexagon grooves (21) are uniformly formed in the first type of tire body (2) along the circumferential direction, a rubber bushing (22) is embedded in the regular hexagon grooves (21) of the outer ring, and a supporting framework (23) is arranged inside the rubber bushing (22); the second type of carcass (3) is composed of a plurality of first support body units (31) and two support body units (32), a two-circle circular ring structure is formed in the circumferential direction, the plurality of first support body units (31) are uniformly distributed along the circumference and are connected with each other, the plurality of second support body units (32) are uniformly distributed along the circumferential direction and are connected with each other, and the first support body units (31) and the second support body units (32) are mutually staggered and connected in the radial direction; the structure of the first support body unit (31) is the same as that of the second support body unit (32), the upper part of the first support body unit is in an upward convex arch shape, the lower part of the first support body unit is in a downward concave arch shape, and the downward concave arch shape of each support body unit (31) is connected with the upward convex arch shapes of the two adjacent second support body units (32);
the convex arches of all the support body units (31) jointly enclose the outer circumferential surface of the second type of tire body (3), the concave arches of all the two support body units (32) jointly enclose the inner circumferential surface of the second type of tire body (3), the outer circumferential surface is connected with the inner circumferential surface of the tire tread (1), and the inner circumferential surface is connected with the outer circumferential surface of the tire inner ring (4);
the included angles formed by the connection lines between the tangent lines of the upper convex arch and the lower concave arch at the connection points and the two connection points are beta and alpha respectively, wherein alpha is larger than beta, and the sum of alpha and beta is smaller than 150 degrees;
the regular hexagon tire comprises a first type tire body (2), a second type tire body (2), a regular hexagon groove (21), a concave table (211) and a rubber bushing (22), wherein the concave table (211) is arranged at the top end of a notch of the outer ring regular hexagon groove (21), the rubber bushing (22) is clamped on the concave table (211) and is in interference fit with the concave table, the outer side of the rubber bushing (22) is regular hexagon, the inner side of the rubber bushing is circular, a supporting framework (23) in interference fit with the rubber bushing (22) is arranged in the rubber bushing, and the supporting framework (23) is a circular ring made of hard alloy materials;
the outer layers of the first support body unit (31) and the second support body unit (32) adopt an outer rubber cord layer (311), the middle layer adopts a hard framework layer (312), and the inner layer adopts an inner rubber cord layer (313).
2. The non-pneumatic tire of claim 1, wherein: the two support body units (32) and the one support body unit (31) have the same structure, the sizes are in equal ratio relation, and the corresponding arc length ratio ranges from 0.61 to 0.9.
3. The non-pneumatic tire of claim 1, wherein: the inner ring regular hexagon and the outer ring regular hexagon of the first type of carcass (2) are in equal ratio, and the side length ratio is in the range of 0.5-0.85.
4. A method for attaching and detaching the non-pneumatic tire according to claim 1, comprising: the method comprises the following specific steps:
the first step: removing the tyre to be removed from the ground;
and a second step of: raising one end of the rubber bushing (22) to enable the raised part of the rubber bushing (22) to be separated from the outer ring regular hexagon groove (21), and clamping the separated part by using a screwdriver to form a gap;
and a third step of: inserting the other screwdriver into the gap of the second step, sliding for one circle to completely separate the rubber bushing (22) from the second type carcass (3), and then pulling out the rubber bushing (22) and the supporting framework (23);
fourth step: sequentially removing other rubber bushings (22) and supporting frameworks (23) according to the second step and the third step;
fifth step: the assembled rubber bushing (22) and the support framework (23) are clamped into the outer ring regular hexagon groove (21) in sequence, and the disassembly and assembly process is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402771.1A CN108407549B (en) | 2018-04-28 | 2018-04-28 | Non-pneumatic tire and method for assembling and disassembling the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402771.1A CN108407549B (en) | 2018-04-28 | 2018-04-28 | Non-pneumatic tire and method for assembling and disassembling the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108407549A CN108407549A (en) | 2018-08-17 |
| CN108407549B true CN108407549B (en) | 2023-08-01 |
Family
ID=63137261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810402771.1A Active CN108407549B (en) | 2018-04-28 | 2018-04-28 | Non-pneumatic tire and method for assembling and disassembling the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108407549B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115157929B (en) * | 2022-08-05 | 2023-09-19 | 中国科学院力学研究所 | Non-pneumatic tire with automatically recovered multistage cross skeleton structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016160421A (en) * | 2015-03-05 | 2016-09-05 | 住友ゴム工業株式会社 | Airless tire |
| KR20160121158A (en) * | 2015-04-10 | 2016-10-19 | 최일호 | Non-Pneumatic Tire |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2141030B1 (en) * | 2007-04-24 | 2012-02-22 | The Yokohama Rubber Co., Ltd. | Non-pneumatic tire and method of manufacturing same |
| US9573422B2 (en) * | 2012-03-15 | 2017-02-21 | Polaris Industries Inc. | Non-pneumatic tire |
| US8931531B2 (en) * | 2012-05-18 | 2015-01-13 | The Goodyear Tire & Rubber Company | System for non-pneumatic support of a vehicle |
| JP1532019S (en) * | 2014-09-22 | 2015-08-24 | ||
| JP6378625B2 (en) * | 2014-12-17 | 2018-08-22 | 東洋ゴム工業株式会社 | Non-pneumatic tire |
| CN104626884B (en) * | 2015-02-03 | 2017-03-15 | 青岛科技大学 | A kind of on-inflatable safety tread |
| CN106347030B (en) * | 2016-11-21 | 2018-09-04 | 青岛双星轮胎工业有限公司 | Non-inflatable tyre |
| CN208180678U (en) * | 2018-04-28 | 2018-12-04 | 无锡职业技术学院 | Non-inflatable tyre |
-
2018
- 2018-04-28 CN CN201810402771.1A patent/CN108407549B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016160421A (en) * | 2015-03-05 | 2016-09-05 | 住友ゴム工業株式会社 | Airless tire |
| KR20160121158A (en) * | 2015-04-10 | 2016-10-19 | 최일호 | Non-Pneumatic Tire |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108407549A (en) | 2018-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106915203B (en) | Non-inflatable low-speed cross-country vehicle tyre | |
| EP2658733B1 (en) | Semi-pneumatic tire (intire) | |
| CN106004251B (en) | A kind of non-inflatable tyre and processing method | |
| CN110525128B (en) | Inflation-free variable-rigidity mechanical elastic tire | |
| CN104786731A (en) | Off-road vehicle wheel free of inflation | |
| CN108032683A (en) | A kind of non-inflatable tyre | |
| CN102582365A (en) | Non-pneumatic tire with rigid and flexible structure | |
| CN110406311B (en) | Modularized deformable tire | |
| CN208180678U (en) | Non-inflatable tyre | |
| CN208277754U (en) | A kind of non-inflatable tyre | |
| CN108407549B (en) | Non-pneumatic tire and method for assembling and disassembling the same | |
| CN108382133B (en) | Non-pneumatic tire and disassembly and assembly method thereof | |
| CN206644587U (en) | On-inflatable low-speed off-road automobile tire | |
| CN209776030U (en) | anti-prick non-pneumatic tyre | |
| CN111890845A (en) | High-speed heavy-load non-inflatable wheel | |
| WO2023138176A1 (en) | Airless tire | |
| CN103707712A (en) | Bi-directional elastic radiant plate type safe vehicle wheel of honeycomb structure | |
| CN112706563B (en) | Non-pneumatic elastomer tire with bionic tooth structure | |
| CN205097832U (en) | Sectionalized on -inflatable wheel of tread | |
| CN111845208A (en) | Non-pneumatic radial tire with high damping performance | |
| CN2162375Y (en) | No-aerate buffer tyre | |
| CN207059649U (en) | A kind of good explosion-proof practical automobile tire of anti-wear performance | |
| CN206551796U (en) | A kind of high-elastic solid trouble-proof tire | |
| KR102377299B1 (en) | Assemblable Flexible Automotive Wheel | |
| CN212332303U (en) | Non-pneumatic radial tire with high damping performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |