CN214492414U - Low rolling resistance tire - Google Patents
Low rolling resistance tire Download PDFInfo
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- CN214492414U CN214492414U CN202120647692.4U CN202120647692U CN214492414U CN 214492414 U CN214492414 U CN 214492414U CN 202120647692 U CN202120647692 U CN 202120647692U CN 214492414 U CN214492414 U CN 214492414U
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- 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
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Abstract
The utility model discloses a low rolling resistance tire, which comprises a tire tread, wherein two first longitudinal grooves extending along the circumferential direction of the tire are arranged in the middle of the tire tread in the width direction, and the two first longitudinal grooves divide the tire tread into a central pattern rib and two pattern areas on two sides; each pattern area is provided with a second longitudinal groove extending along the circumferential direction of the tire, and the second longitudinal groove divides the pattern area into a tire shoulder rib and a side rib; the central pattern rib comprises a plurality of central pattern groups which are uniformly distributed along the circumferential direction of the tire, and each central pattern group comprises a first central oblique pattern, a central steel sheet and a second central oblique pattern which are sequentially arranged along the circumferential direction of the tire; the side rib is alternately provided with a tire side steel sheet group and a sickle-shaped groove along the circumferential direction of the tire; the tire shoulder rib is alternately provided with a tire shoulder transverse groove and a tire shoulder steel sheet set along the circumferential direction of the tire, and one end of the tire shoulder transverse groove penetrates through the adjacent second longitudinal grooves. The tire has low noise, low rolling resistance and good gripping performance.
Description
Technical Field
The utility model belongs to the technical field of the tire, concretely relates to low rolling resistance tire.
Background
The SUV type is a sport type multipurpose automobile between a sedan and an off-road vehicle, and generally has larger chassis ground clearance and good trafficability. The vehicle type gives consideration to the comfort of the car and the good motion performance of the off-road vehicle. Therefore, in order to meet the requirements of comfort, mobility and grip of the SUV vehicle, the tire of the vehicle has higher requirements on the noise and rolling resistance of the tire, and the pursuit of low rolling resistance, low noise and improvement of poor road grip is one of the main research and development directions of the tire of the SUV vehicle at present.
SUVs are required to meet the requirements of both passenger car comfort, low rolling resistance, low noise, off-road vehicle mobility, and poor road grip. The HP symmetrical pattern design meets the index requirements of the SUV on the tire performance, and is the optimal choice for pursuing high performance and low rolling resistance.
Disclosure of Invention
Not enough to prior art, the to-be-solved technical problem of the utility model is that, provide and hang down to roll and hinder the tire, this tire specifically low noise, hang down to roll and hinder and good ground performance of grabbing is applicable to the SUV motorcycle type, can satisfy the comfort level and the mobility requirement of vehicle.
In order to achieve the above object, the utility model discloses a technical scheme be:
the low rolling resistance tire comprises a tire tread, wherein two first longitudinal grooves extending along the circumferential direction of the tire are formed in the middle of the tire tread in the width direction, and the two first longitudinal grooves are symmetrically arranged relative to the equator line of the tire; the two first longitudinal grooves divide the tread into a central rib positioned between the two first longitudinal grooves and two pattern areas respectively positioned at two sides of the central rib; the two pattern areas are centrosymmetric, each pattern area is provided with a second longitudinal groove extending along the circumferential direction of the tire, and the second longitudinal grooves divide the pattern area into tire shoulder ribs close to the tire shoulder and side ribs close to the central ribs;
the central rib comprises a plurality of central rib groups which are uniformly distributed along the circumferential direction of the tire, each central rib group comprises a first central oblique rib, a central steel sheet and a second central oblique rib which are sequentially arranged along the circumferential direction of the tire, the inclination directions of the first central oblique rib, the central steel sheet and the second central oblique rib are consistent, and two ends of the first central oblique rib are respectively connected with two first longitudinal grooves;
the side rib is alternately provided with a tire side steel sheet group and a sickle-shaped groove along the circumferential direction of the tire; two ends of the sickle-shaped groove respectively penetrate through the first longitudinal groove and the second longitudinal groove; the sidewall steel sheet group is connected with the sickle-shaped groove, the first longitudinal groove and the second longitudinal groove;
the tire shoulder rib is provided with a tire shoulder transverse groove and a tire shoulder steel sheet group along the circumferential direction of the tire in an alternating mode, and one end of the tire shoulder transverse groove penetrates through the adjacent second longitudinal grooves.
Preferably, the first central oblique pattern is composed of a first thin groove segment and a first oblique steel sheet segment which are connected, the second central oblique pattern is composed of a second thin groove segment and a second oblique steel sheet segment which are connected, one end of the first thin groove segment penetrates through one of the first longitudinal grooves, and one end of the second thin groove segment penetrates through the other first longitudinal groove.
Preferably, the sickle-shaped groove consists of a first inclined groove section and a second inclined groove section which are connected at the end parts, the first inclined groove section is arranged at the side close to the central steel sheet and inclines in the same direction with the central steel sheet, and the second inclined groove section is opposite to the first inclined groove section in inclination direction and is arranged at the side close to the second longitudinal groove; child side steel sheet group is for going into word steel sheet group, it comprises first slant steel sheet and second slant steel sheet to go into word steel sheet group, first slant steel sheet is located and is close to first indulge the ditch side, just first slant steel sheet with first slant groove section incline direction is the same, second slant steel sheet is located and is close to the ditch side is indulged to the second, just second slant steel sheet with first slant steel sheet incline direction is opposite, the both ends of first slant steel sheet are connected respectively first indulge the ditch with the middle part of second slant steel sheet, the both ends of second slant steel sheet are connected respectively the middle part of first slant groove section with the ditch is indulged to the second.
Preferably, a first reinforcing rib is arranged in the sickle-shaped groove, and the first reinforcing rib is arranged at the joint of the first inclined groove section and the second inclined groove section.
Preferably, the shoulder transverse groove is obliquely arranged, and the oblique direction of the shoulder transverse groove is consistent with that of the second oblique groove section adjacent to the shoulder transverse groove.
Preferably, a second reinforcing rib is arranged in the transverse groove between the tires, and the second reinforcing rib is arranged at the connecting end of the transverse groove between the tires and the second longitudinal groove.
Preferably, the tire shoulder steel sheet group is a cross-shaped steel sheet group, the cross-shaped steel sheet group is composed of a first longitudinal steel sheet, a first transverse steel sheet and a second transverse steel sheet, the first longitudinal steel sheet is obliquely arranged, two adjacent tire shoulder transverse grooves are respectively connected to two ends of the first longitudinal steel sheet, the first transverse steel sheet and the second transverse steel sheet are respectively arranged on two sides of the first longitudinal steel sheet, the second transverse steel sheet is far away from the second longitudinal grooves, the first transverse steel sheet is close to the second longitudinal grooves, adjacent second longitudinal grooves are connected to one end of the first transverse steel sheet, the first transverse steel sheet and the second transverse steel sheet are obliquely arranged, and the oblique direction is the same as the tire shoulder transverse grooves.
Preferably, at least one wear indicator is arranged in each of the first longitudinal groove and the second longitudinal groove.
Preferably, the width of the notch of the first longitudinal groove is greater than that of the notch of the second longitudinal groove, and the side walls of the first longitudinal groove and the second longitudinal groove are both obliquely arranged; the included angle gamma between the two side walls of the first longitudinal groove and the radial direction of the tire is the same, the included angle alpha between the side wall of the second longitudinal groove close to the tire shoulder and the radial direction of the tire is larger than gamma, and the included angle beta between the side wall of the second longitudinal groove far away from the tire shoulder and the radial direction of the tire is smaller than gamma; the radius of the fillet at the bottom of the first longitudinal groove is larger than that of the fillet at the bottom of the second longitudinal groove.
Preferably, the ratio of the width of the notch of the first longitudinal groove to the width of the notch of the second longitudinal groove is 1.1: 1; the ratio of the radius of the fillet at the bottom of the first longitudinal groove to the radius of the fillet at the bottom of the second longitudinal groove is 2.5: 2; the included angle gamma is 10 degrees, the included angle alpha is 11 degrees, and the included angle beta is 9 degrees.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect: a low rolling resistance tire is provided, which has low noise, low rolling resistance and good ground gripping performance, is suitable for SUV vehicles and can meet the requirements of comfort and mobility of vehicles. Specifically, the method comprises the following steps:
1. the tread decorative pattern of this application tire passes through multi-angle decorative pattern slot, steel sheet design, reduces the space that decorative pattern and ground contact formed, can reduce and roll the resistance, simultaneously can the rapid dispersion volume of sound in the cavity to reduce the structural noise that tire vibration brought, reduce the child noise, increase the travelling comfort.
2. The tread pattern of the tire is designed as a symmetrical pattern, and the ground gripping performance of the tire can be improved through the design of the wide grooves, the side wall inclination angles and the groove bottom chamfers of the four longitudinal grooves.
3. The sickle-shaped grooves and the tire shoulder transverse grooves are internally provided with reinforcing rib structures, and the pattern blocks can be connected in the braking process, so that higher stability and rigidity are obtained, shorter braking distance is realized, and the movement performance of the tire is improved. When the tire is turned, the reinforcing rib structure can form a firm tire tread structure, so that the tire can provide quicker control feedback and more excellent ground holding force.
Drawings
FIG. 1 is a schematic view of the tread pattern structure of a low rolling resistance tire of the present invention;
fig. 2 is a schematic cross-sectional view of the tread of the low rolling resistance tire of the present invention.
Detailed Description
The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
It should be noted that in the description of the present invention, the terms "inside", "outside", "upper", "lower", "left", "right", "front", "rear", etc. indicate the positional relationship based on the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Example (b):
as shown in fig. 1, the low rolling resistance tire comprises a tread, wherein two first longitudinal grooves 1 extending along the circumferential direction of the tire are formed in the middle of the tread in the width direction, and the two first longitudinal grooves 1 are symmetrically arranged relative to the equator line of the tire; the two first longitudinal grooves 1 divide the tread into a central rib 3 located between the two first longitudinal grooves 1 and two pattern areas located on both sides of the central rib 3; the two pattern areas are centrosymmetric, each pattern area is provided with a second longitudinal groove 2 extending along the circumferential direction of the tire, and the second longitudinal grooves 2 divide the pattern area into tire shoulder ribs 5 close to the tire shoulder and side ribs 4 close to the central ribs 3; the central rib 3 comprises a plurality of central rib groups uniformly arranged along the circumferential direction of the tire, each central rib group comprises a first central oblique rib 6, a central steel sheet 7 and a second central oblique rib 8 which are sequentially arranged along the circumferential direction of the tire, the first central oblique rib 6, the central steel sheet 7 and the second central oblique rib 8 have the same inclination direction (the inclination is axial inclination, namely left and right inclination by taking a tire rotating shaft as a datum line in the embodiment), two ends of the first central oblique rib 6 are respectively connected with two first longitudinal grooves, two ends of the central steel sheet 7 are respectively connected with two first longitudinal grooves, and two ends of the second central oblique rib 8 are respectively connected with two first longitudinal grooves; the side rib 4 is alternately provided with a tire side steel sheet group 9 and sickle-shaped grooves 10 along the circumferential direction of the tire; two ends of the sickle-shaped groove 10 respectively penetrate through the first longitudinal groove 1 and the second longitudinal groove 2; the sidewall steel sheet group 9 is connected with the sickle-shaped groove, the first longitudinal groove 1 and the second longitudinal groove 2; the tire shoulder rib 5 is alternately provided with a tire shoulder transverse groove 16 and a tire shoulder steel plate group along the circumferential direction of the tire, and one end of the tire shoulder transverse groove 16 penetrates through the adjacent second longitudinal grooves 2.
The tread decorative pattern of tire adopts above-mentioned structure, can reduce the space that decorative pattern and ground contact formed through the design of the steel sheet of multi-angle decorative pattern slot and multi-angle, can reduce and roll and hinder, simultaneously can the rapid dispersion volume of sound in the cavity to reduce the structural noise that tire vibration brought, reduce the child and make an uproar, increase the travelling comfort.
Specifically, as shown in fig. 1, the first central diagonal pattern 6 is composed of a first fine groove segment 62 and a first diagonal steel segment 61 which are connected, the second central diagonal pattern 8 is composed of a second fine groove segment 82 and a second diagonal steel segment 81 which are connected, one end of the first fine groove segment 62 and one end of the second diagonal steel segment 81 are connected to one of the first longitudinal grooves 1, and one end of the second fine groove segment 82 and one end of the first diagonal steel segment 61 are connected to the other of the first longitudinal grooves.
Specifically, as shown in fig. 1, the sickle-shaped groove 10 is composed of a first oblique groove section 101 and a second oblique groove section 102 which are connected at end portions, the first oblique groove section 101 is arranged at a side close to the central steel sheet 7, the first oblique groove section 101 is inclined in the same direction as the central steel sheet 7, the second oblique groove section 102 is opposite to the first oblique groove section 101 in inclination direction, and the second oblique groove section 102 is arranged at a side close to the second longitudinal groove 2; the tire side steel sheet group 9 is a shape-entering steel sheet group which is composed of a first oblique steel sheet 92 and a second oblique steel sheet 91, the first oblique steel sheet 92 is arranged on the side close to the first longitudinal groove 1, the oblique directions of the first oblique steel sheet 92 and the first oblique groove section 101 are the same, the second oblique steel sheet 91 is arranged on the side close to the second longitudinal groove 2, the oblique directions of the second oblique steel sheet 91 and the first oblique steel sheet 92 are opposite, the two ends of the first oblique steel sheet 92 are respectively connected with the middle parts of the first longitudinal groove 1 and the second oblique steel sheet 91, and the two ends of the second oblique steel sheet 91 are respectively connected with the middle part of the first oblique groove section 101 and the second longitudinal groove 2.
Specifically, the shoulder transverse groove 16 is obliquely arranged, and the oblique direction of the shoulder transverse groove 16 is consistent with that of the adjacent second oblique groove section 102.
Specifically, in order to improve the structural strength and the gripping performance of the tread, a first reinforcing rib 11 is arranged in the sickle-shaped groove 10, and the first reinforcing rib 11 is arranged at the joint of the first inclined groove section 101 and the second inclined groove section 102. The second reinforcing rib 17 is arranged in the tire transverse groove 16, and the second reinforcing rib 17 is arranged at the connecting end of the tire transverse groove 16 and the second longitudinal groove 2.
An SUV is a heavy vehicle whose center of gravity is generally higher than that of a sedan. This places a greater load on the tire during braking and steering. The stiffener structures are placed in the cross grooves 16 and the sickle-shaped grooves 10 between the tires and can connect the pattern blocks in the braking process, thereby obtaining higher stability and rigidity and realizing shorter braking distance. The rib structure described above enables a strong tread structure to be formed when turning, which enables the SUV tire to provide quicker steering feedback and superior grip.
Specifically, the tire shoulder steel sheet group is a cross-shaped steel sheet group, the cross-shaped steel sheet group is composed of a first longitudinal steel sheet 14, a first transverse steel sheet 15 and a second transverse steel sheet 13, the first longitudinal steel sheet 14 is obliquely arranged, two adjacent tire shoulder transverse grooves 16 are respectively connected to two ends of the first longitudinal steel sheet 14, the first transverse steel sheet 15 and the second transverse steel sheet 13 are respectively arranged on two sides of the first longitudinal steel sheet 14, the second transverse steel sheet 13 is far away from the second longitudinal groove 2, the first transverse steel sheet 15 is close to the second longitudinal groove 2, one end of the first transverse steel sheet 15 is connected with the adjacent second longitudinal groove 2, the first transverse steel sheet 15 and the second transverse steel sheet 13 are obliquely arranged, and the oblique direction is the same as the tire shoulder transverse grooves 16.
Specifically, at least one wear mark is arranged in each of the first longitudinal groove 1 and the second longitudinal groove 2.
Specifically, as shown in fig. 2, in order to further improve the grip performance of the tire, the notch width L of the first longitudinal groove 12Is larger than the width L of the notch of the second longitudinal groove 21The side walls of the first longitudinal groove 1 and the second longitudinal groove 2 are both obliquely arranged; the included angle gamma between the two side walls of the first longitudinal groove 1 and the radial direction of the tire is the same, the included angle alpha between the side wall of the second longitudinal groove 2 close to the tire shoulder and the radial direction of the tire is larger than gamma, and the included angle beta between the side wall of the second longitudinal groove 2 far away from the tire shoulder and the radial direction of the tire is smaller than gamma; the radius of the groove bottom fillet of the first longitudinal groove 1 is larger than that of the groove bottom fillet of the second longitudinal groove 2.
Specifically, as shown in fig. 2, the first longitudinal groove 1 has a notch width L2Width L of the notch of the second longitudinal groove 21The ratio of (A) to (B) is 1.1: 1; the ratio of the radius of the fillet at the bottom of the first longitudinal groove 1 to the radius of the fillet at the bottom of the second longitudinal groove 2 is 2.5: 2; γ is 10 °, α is 11 °, β is 9 °.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. A low rolling resistance tire comprising a tread, characterized in that: the middle part of the tread in the width direction is provided with two first longitudinal grooves extending along the circumferential direction of the tire, and the two first longitudinal grooves are symmetrically arranged relative to the equator line of the tire; the two first longitudinal grooves divide the tread into a central rib positioned between the two first longitudinal grooves and two pattern areas respectively positioned at two sides of the central rib; the two pattern areas are centrosymmetric, each pattern area is provided with a second longitudinal groove extending along the circumferential direction of the tire, and the second longitudinal grooves divide the pattern area into tire shoulder ribs close to the tire shoulder and side ribs close to the central ribs;
the central rib comprises a plurality of central rib groups which are uniformly distributed along the circumferential direction of the tire, each central rib group comprises a first central oblique rib, a central steel sheet and a second central oblique rib which are sequentially arranged along the circumferential direction of the tire, the inclination directions of the first central oblique rib, the central steel sheet and the second central oblique rib are consistent, and two ends of the first central oblique rib are respectively connected with two first longitudinal grooves;
the side rib is alternately provided with a tire side steel sheet group and a sickle-shaped groove along the circumferential direction of the tire; two ends of the sickle-shaped groove respectively penetrate through the first longitudinal groove and the second longitudinal groove; the sidewall steel sheet group is connected with the sickle-shaped groove, the first longitudinal groove and the second longitudinal groove;
the tire shoulder rib is provided with a tire shoulder transverse groove and a tire shoulder steel sheet group along the circumferential direction of the tire in an alternating mode, and one end of the tire shoulder transverse groove penetrates through the adjacent second longitudinal grooves.
2. The low rolling resistance tire of claim 1, wherein: the first central oblique pattern is composed of a first fine groove section and a first oblique steel sheet section which are connected, the second central oblique pattern is composed of a second fine groove section and a second oblique steel sheet section which are connected, one end of the first fine groove section penetrates through one of the first longitudinal grooves, and one end of the second fine groove section penetrates through the other first longitudinal groove.
3. The low rolling resistance tire of claim 2, wherein: the sickle-shaped groove consists of a first inclined groove section and a second inclined groove section which are connected at the end parts, the first inclined groove section is arranged at the side close to the central steel sheet and inclines in the same direction with the central steel sheet, and the second inclined groove section is opposite to the first inclined groove section in the inclination direction and is arranged at the side close to the second longitudinal groove; child side steel sheet group is for going into word steel sheet group, it comprises first slant steel sheet and second slant steel sheet to go into word steel sheet group, first slant steel sheet is located and is close to first indulge the ditch side, just first slant steel sheet with first slant groove section incline direction is the same, second slant steel sheet is located and is close to the ditch side is indulged to the second, just second slant steel sheet with first slant steel sheet incline direction is opposite, the both ends of first slant steel sheet are connected respectively first indulge the ditch with the middle part of second slant steel sheet, the both ends of second slant steel sheet are connected respectively the middle part of first slant groove section with the ditch is indulged to the second.
4. A low rolling resistance tire according to claim 3, wherein: the sickle-shaped groove is internally provided with a first reinforcing rib, and the first reinforcing rib is arranged at the joint of the first inclined groove section and the second inclined groove section.
5. A low rolling resistance tire according to claim 3, wherein: the tire shoulder transverse groove is obliquely arranged, and the oblique direction of the tire shoulder transverse groove is consistent with that of the second oblique groove section adjacent to the tire shoulder transverse groove.
6. The low rolling resistance tire of claim 5, wherein: and a second reinforcing rib is arranged in the tire shoulder transverse groove and is arranged at the connecting end of the tire inter-tire transverse groove and the second longitudinal groove.
7. The low rolling resistance tire of claim 5, wherein: the tire shoulder steel sheet group is a cross-shaped steel sheet group, the cross-shaped steel sheet group is composed of a first longitudinal steel sheet, a first transverse steel sheet and a second transverse steel sheet, the first longitudinal steel sheet is obliquely arranged, two adjacent tire shoulder transverse grooves are respectively connected to two ends of the first longitudinal steel sheet, the first transverse steel sheet and the second transverse steel sheet are respectively arranged on two sides of the first longitudinal steel sheet, the second transverse steel sheet is far away from the second longitudinal grooves, the first transverse steel sheet is close to the second longitudinal grooves, adjacent second longitudinal grooves are connected to one end of the first transverse steel sheet, the first transverse steel sheet and the second transverse steel sheet are arranged in an inclined mode, and the inclined direction is the same as the tire shoulder transverse grooves.
8. The low rolling resistance tire of claim 1, wherein: at least one wear mark is arranged in each of the first longitudinal groove and the second longitudinal groove.
9. The low rolling resistance tire of claim 1, wherein: the width of the notch of the first longitudinal groove is larger than that of the notch of the second longitudinal groove, and the side walls of the first longitudinal groove and the second longitudinal groove are obliquely arranged; the included angle gamma between the two side walls of the first longitudinal groove and the radial direction of the tire is the same, the included angle alpha between the side wall of the second longitudinal groove close to the tire shoulder and the radial direction of the tire is larger than gamma, and the included angle beta between the side wall of the second longitudinal groove far away from the tire shoulder and the radial direction of the tire is smaller than gamma; the radius of the fillet at the bottom of the first longitudinal groove is larger than that of the fillet at the bottom of the second longitudinal groove.
10. The low rolling resistance tire of claim 9, wherein: the ratio of the width of the notch of the first longitudinal groove to the width of the notch of the second longitudinal groove is 1.1: 1; the ratio of the radius of the fillet at the bottom of the first longitudinal groove to the radius of the fillet at the bottom of the second longitudinal groove is 2.5: 2; the included angle gamma is 10 degrees, the included angle alpha is 11 degrees, and the included angle beta is 9 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120647692.4U CN214492414U (en) | 2021-03-30 | 2021-03-30 | Low rolling resistance tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120647692.4U CN214492414U (en) | 2021-03-30 | 2021-03-30 | Low rolling resistance tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214492414U true CN214492414U (en) | 2021-10-26 |
Family
ID=78201223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120647692.4U Active CN214492414U (en) | 2021-03-30 | 2021-03-30 | Low rolling resistance tire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214492414U (en) |
-
2021
- 2021-03-30 CN CN202120647692.4U patent/CN214492414U/en active Active
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