Tire

Abstract

The utility model provides a tire, the tread of the tire is provided with a pattern structure, the pattern structure is a central symmetry structure, and the pattern structure comprises two circumferential zigzag grooves which are arranged at intervals along the rotating axis of the tire so as to divide the pattern structure into a middle pattern part and two shoulder pattern strips which are respectively positioned on the two sides of the middle pattern part; the plurality of circumferential linear grooves are formed between the two circumferential zigzag grooves at intervals along the rotating axis of the tire so as to divide the middle pattern part into a plurality of middle pattern strips; the two zigzag steel sheet groups are arranged corresponding to the two circumferential zigzag grooves respectively, each zigzag steel sheet group comprises a plurality of zigzag steel sheets which are sequentially arranged at intervals in the circumferential direction of the tire, one end of each zigzag steel sheet is connected with the corresponding circumferential zigzag groove, and the other end of each zigzag steel sheet is connected with the adjacent circumferential linear groove; the problem that in the prior art, a pattern special tire for a trailer with low rolling resistance, excellent wet grabbing capacity, good wear resistance and low noise is lacked is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tires, and particularly relates to a tire. Background Art

[0002] With the continuous development of the automotive industry, the requirements for tires are getting higher and higher, and tires with high quality and specific performance are gradually favored by the market. For domestic and foreign trailers, ordinary performance tires can no longer meet people's pursuit of energy conservation, high speed, NVH comfort and other performances.

[0003] Nowadays, more and more countries emphasize the importance of reducing fuel consumption and exhaust emissions. From both environmental and economic perspectives, reducing vehicle fuel consumption is necessary, which will also indirectly affect vehicle exhaust emissions. Among them, reducing rolling resistance is the key way to achieve energy conservation and emission reduction.

[0004] At the same time, for road conditions with more rain, it is also very necessary to enhance the grip ability of the tire on wet roads. Finally, considering the complexity of road conditions and driving comfort, high technical requirements are also put forward for the wear resistance and noise of the tire.

[0005] Therefore, there is a lack of a special trailer tire with a pattern having low rolling resistance, excellent wet grip ability, good wear resistance and low noise in the prior art. Summary of the Utility Model

[0006] The main purpose of the utility model is to provide a tire to solve the problem that there is a lack of a special trailer tire with a pattern having low rolling resistance, excellent wet grip ability, good wear resistance and low noise in the prior art.

[0007] To achieve the above purpose, according to the utility model, a tire is provided. A pattern structure is arranged on the tread of the tire. The pattern structure is a centrosymmetric structure. The pattern structure includes: two circumferential zigzag grooves, which are arranged at intervals along the rotation axis of the tire to divide the pattern structure into an intermediate pattern part and two shoulder pattern strips respectively located on both sides of the intermediate pattern part; a plurality of circumferential straight grooves, which are arranged at intervals along the rotation axis of the tire between the two circumferential zigzag grooves to divide the intermediate pattern part into a plurality of intermediate pattern strips; two zigzag steel sheet groups, which are respectively arranged corresponding to the two circumferential zigzag grooves. Each zigzag steel sheet group includes a plurality of zigzag steel sheets arranged at intervals in sequence along the circumference of the tire. One end of each zigzag steel sheet is connected to the corresponding circumferential zigzag groove, and the other end of each zigzag steel sheet is connected to the adjacent circumferential straight groove.

[0008] Furthermore, the circumferential zigzag groove includes a plurality of zigzag groove portions sequentially connected along the circumferential direction of the tire. Each zigzag groove portion includes a first groove section and a second groove section connected to each other. The extending direction of the groove opening of the first groove section is the same as that of the groove bottom, and the extending direction of the groove opening of the second groove section is the same as that of the groove bottom. The first included angle A between the extending direction of the groove bottom of the first groove section and the extending direction of the groove bottom of the second groove section is an obtuse angle. Wherein, the value range of the first included angle A is 150° ≤ A ≤ 160°; and / or the widths of the groove openings of the first groove section and the second groove section are both B, where 13 mm ≤ B ≤ 16 mm; and / or the length of the first groove section is equal to the length of the second groove section.

[0009] Furthermore, the circumferential straight groove includes a plurality of straight groove portions sequentially connected along the circumferential direction of the tire. Each straight groove includes a third groove section and a fourth groove section connected to each other. The extending direction of the groove opening of the third groove section is cross - set with the extending direction of the groove bottom, and the extending direction of the groove opening and the groove bottom of the fourth groove section is cross - set. The extending directions of the groove openings of the third groove section and the fourth groove section are both perpendicular to the rotation axis of the tire. The second included angle C between the extending direction of the groove bottom of the third groove section and the extending direction of the groove bottom of the fourth groove section is an obtuse angle. Wherein, the value range of the second included angle C is 150° ≤ C ≤ 160°; and / or the widths of the third groove section and the fourth groove section are both D, where the value range of D is 13 mm ≤ D ≤ 16 mm; and / or the length of the third groove section is greater than the length of the fourth groove section.

[0010] Furthermore, the number of circumferential straight grooves is two, and the tread pattern structure further includes a circumferential center - crown decorative groove which is arranged between the two circumferential straight grooves; or the number of circumferential straight grooves is three.

[0011] Furthermore, when the tread pattern structure includes a circumferential center - crown decorative groove, the circumferential center - crown decorative groove includes a plurality of center - crown groove portions sequentially connected along the circumferential direction of the tire. Each center - crown groove includes a fifth groove section and a sixth groove section connected to each other. The extending direction of the groove opening of the fifth groove section is the same as that of the groove bottom, and the extending direction of the groove opening and the groove bottom of the sixth groove section is the same. The third included angle E between the extending direction of the groove bottom of the fifth groove section and the extending direction of the groove bottom of the sixth groove section is an obtuse angle. Wherein, the value range of the third included angle E is 150° ≤ E ≤ 160°; and / or the widths of the groove openings of the fifth groove section and the sixth groove section are both greater than or equal to 1 mm and less than or equal to 2 mm; and / or the depths of the fifth groove section and the sixth groove section are both greater than or equal to 1.5 mm and less than or equal to 3 mm; and / or the length of the fifth groove section is greater than the length of the sixth groove section.

[0012] Further, the zigzag steel sheet includes a first segment, a second segment, and a third segment connected in sequence. The first segment and the third segment are parallel to each other. The included angles between the second segment and the first segment and the third segment are both obtuse angles. The depth of the second segment is greater than the depth of the first segment and greater than the depth of the third segment. Among them, the first segment is connected to the turning point of the corresponding circumferential zigzag groove, and the third segment is connected to the adjacent circumferential straight groove.

[0013] Further, two transverse steel sheet groups are respectively arranged on both relative sides of each circumferential zigzag groove and / or each circumferential straight groove. Each transverse steel sheet group includes a plurality of transverse steel sheets arranged at intervals in sequence along the circumferential direction of the tire. The plurality of transverse steel sheets of one transverse steel sheet group and the plurality of transverse steel sheets of the other transverse steel sheet group are arranged staggered along the circumferential direction of the tire. Among them, each transverse steel sheet is parallel to the rotation axis of the tire. One end of each transverse steel sheet is connected to the turning point of the corresponding circumferential zigzag groove or the corresponding circumferential straight groove, and the other end of each transverse steel sheet extends in a direction away from the corresponding circumferential zigzag groove or the corresponding circumferential straight groove.

[0014] Further, each transverse steel sheet includes a connected fourth segment and a fifth segment. The fourth segment is located on the tread of the tire, and the fifth segment is located on the side of the fourth segment close to the rotation axis of the tire. Among them, the width w of the fourth segment is smaller than the width of the notch of the corresponding circumferential zigzag groove or the width of the notch of the corresponding circumferential straight groove; and / or the maximum depth of each transverse steel sheet is h0, and the depths of the circumferential zigzag groove and the circumferential straight groove are both h, where h0 / h = 2 / 3; and / or the value range of the width w of the fourth segment is 7 mm ≤ w ≤ 10 mm; and / or the value range of the depth h1 of the fourth segment is 1.5 mm ≤ h1 ≤ 3 mm.

[0015] Further, the tread pattern structure includes a first tread pitch, a second tread pitch, and a third tread pitch. The lengths of the first tread pitch, the second tread pitch, and the third tread pitch are P1, P2, and P3 respectively. Among them, P1 > P2 > P3.

[0016] Further, the numbers of the first tread pitch, the second tread pitch, and the third tread pitch are N1, N2, and N3 respectively. Among them, N1:N2:N3 = 1:2:1; and / or the ratio of the lengths of the first tread pitch, the second tread pitch, and the third tread pitch P1:P2:P3 = [1.08, 1.21]:[1.00, 1.08]:[1.00, 1.21].

[0017] Applying the technical solution of the present utility model, a tread pattern structure is provided on the tread of the tire of the present utility model. The pattern structure is a centrally symmetric structure, and the pattern structure includes: two circumferential zigzag grooves, which are arranged at intervals along the rotation axis of the tire to divide the pattern structure into an intermediate pattern portion and two shoulder pattern strips respectively located on both sides of the intermediate pattern portion; a plurality of circumferential straight grooves, which are arranged at intervals along the rotation axis of the tire between the two circumferential zigzag grooves to divide the intermediate pattern portion into a plurality of intermediate pattern strips; two zigzag steel sheet groups, which are respectively arranged corresponding to the two circumferential zigzag grooves. Each zigzag steel sheet group includes a plurality of zigzag steel sheets arranged at intervals in sequence along the circumference of the tire. One end of each zigzag steel sheet is connected to the corresponding circumferential zigzag groove, and the other end of each zigzag steel sheet is connected to the adjacent circumferential straight groove. In this way, the pattern structure of the tire of the present utility model divides the pattern structure into two shoulder pattern strips and a plurality of intermediate pattern strips by arranging two circumferential zigzag grooves and a plurality of circumferential straight grooves located between the two circumferential zigzag grooves, and divides the corresponding intermediate pattern strips into a plurality of pattern blocks by arranging two zigzag steel sheet groups. Its arrangement is relatively compact, the saturation is relatively high, the pattern rigidity is improved, the heat generation of the tire during driving, especially during turning, is reduced, the rolling resistance of the tire is reduced, the wear resistance of the tire is increased, the noise generated by vibration is also lower, the drainage performance of the tire can be improved, the fuel economy of the vehicle can be improved, the problem in the prior art that there is a lack of a special trailer tire pattern with low rolling resistance, excellent wet grip ability, good wear resistance and low noise is solved, the driving safety and comfort are improved, and the aesthetic effect of the tire is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0019] Figure 1 shows a schematic structural view of the pattern structure of an embodiment of the tire according to the present utility model;

[0020] Figure 2 shows Figure 1 a schematic structural view of the transverse steel sheets of the transverse steel sheet group of the shown pattern structure.

[0021] Among them, the above-mentioned accompanying drawings include the following reference numerals:

[0022] 11, circumferential zigzag groove; 111, first groove segment; 112, second groove segment; 12, circumferential straight groove; 121, third groove segment; 122, fourth groove segment; 13, circumferential crown middle decorative groove; 131, fifth groove segment; 132, sixth groove segment;

[0023] 21. Intermediate pattern portion; 210. Intermediate pattern strip; 22. Shoulder pattern strip

[0024] 30. Zigzag steel sheet group; 31. Zigzag steel sheet; 32. First segment; 33. Second segment; 34. Third segment

[0025] 40. Transverse steel sheet group; 41. Transverse steel sheet; 42. Fourth segment; 43. Fifth segment Detailed implementation mode

[0026] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments

[0027] As shown in Figure 1 and Figure 2 The present utility model provides a tire, and a pattern structure is provided on the tread of the tire. The pattern structure is a centrosymmetric structure, and the pattern structure includes: two circumferential zigzag grooves 11, and the two circumferential zigzag grooves 11 are arranged at intervals along the rotation axis of the tire to divide the pattern structure into an intermediate pattern portion 21 and two shoulder pattern strips 22 respectively located on both sides of the intermediate pattern portion 21; a plurality of circumferential straight grooves 12, and the plurality of circumferential straight grooves 12 are arranged at intervals along the rotation axis of the tire between the two circumferential zigzag grooves 11 to divide the intermediate pattern portion 21 into a plurality of intermediate pattern strips 210; two zigzag steel sheet groups 30, and the two zigzag steel sheet groups 30 are respectively arranged corresponding to the two circumferential zigzag grooves 11. Each zigzag steel sheet group 30 includes a plurality of zigzag steel sheets 31 arranged at intervals in sequence along the circumference of the tire. One end of each zigzag steel sheet 31 is connected to the corresponding circumferential zigzag groove 11, and the other end of each zigzag steel sheet 31 is connected to the adjacent circumferential straight groove 12

[0028] In this way, the pattern structure of the tire of the present utility model divides the pattern structure into two shoulder pattern strips 22 and a plurality of intermediate pattern strips 210 by arranging two circumferential zigzag grooves 11 and a plurality of circumferential straight grooves 12 located between the two circumferential zigzag grooves 11, and divides the corresponding intermediate pattern strips 210 into a plurality of pattern blocks by arranging two zigzag steel sheet groups 30. Its arrangement is relatively compact, the saturation is relatively high, the pattern rigidity is improved, the heat generation of the tire during driving, especially during turning, is reduced, the rolling resistance of the tire is reduced, the wear resistance of the tire is increased, the noise generated by vibration is also lower, the drainage performance of the tire can be improved, the fuel economy of the vehicle is improved, the problem in the prior art that there is a lack of a special trailer tire pattern with low rolling resistance, excellent wet grip ability, good wear resistance and low noise is solved, the driving safety and comfort are improved, and the aesthetic effect of the tire is enhanced

[0029] The tread pattern structure of the present utility model is a special tread pattern for a trailer. The tread pattern structure is a centrally symmetric structure and a non-directional tread pattern, which can effectively avoid the problem of incorrect tire installation.

[0030] As Figure 1 shown, the circumferential zigzag groove 11 includes a plurality of zigzag groove portions sequentially connected along the circumference of the tire. Each zigzag groove portion includes a first groove section 111 and a second groove section 112 connected to each other. The extending direction of the groove opening of the first groove section 111 is the same as the extending direction of the groove bottom, and the extending direction of the groove opening of the second groove section 112 is the same as the extending direction of the groove bottom; the first included angle A between the extending direction of the groove bottom of the first groove section 111 and the extending direction of the groove bottom of the second groove section 112 is an obtuse angle; wherein, the value range of the first included angle A is 150°≤A≤160°; and / or the width of the groove opening of the first groove section 111 and the width of the groove opening of the second groove section 112 are both B, wherein, 13mm≤B≤16mm; and / or the length of the first groove section 111 is equal to the length of the second groove section 112.

[0031] As Figure 1 shown, the circumferential straight groove 12 includes a plurality of straight groove portions sequentially connected along the circumference of the tire. Each straight groove includes a third groove section 121 and a fourth groove section 122 connected to each other. The extending direction of the groove opening of the third groove section 121 is arranged crosswise with the extending direction of the groove bottom, and the extending direction of the groove opening and the groove bottom of the fourth groove section 122 is arranged crosswise; the extending direction of the groove opening of the third groove section 121 and the extending direction of the groove opening of the fourth groove section 122 are both perpendicular to the rotation axis of the tire, and the second included angle C between the extending direction of the groove bottom of the third groove section 121 and the extending direction of the groove bottom of the fourth groove section 122 is an obtuse angle; wherein, the value range of the second included angle C is 150°≤C≤160°; and / or the width of the third groove section 121 and the width of the fourth groove section 122 are both D, wherein, the value range of D is 13mm≤D≤16mm; and / or the length of the third groove section 121 is greater than the length of the fourth groove section 122.

[0032] In this way, compared with the tires of the existing wide-base trailers, the tires of the present utility model adopting the above-mentioned circumferential zigzag grooves 11 and circumferential straight grooves 12 can have lower rolling resistance while ensuring the straight-line driving stability of the tires, and the noise generated by vibration will also be lower. In addition, the relatively large widths of the circumferential zigzag grooves 11 and circumferential straight grooves 12 can improve the drainage performance of the tires, improve the wet grip ability of the tires, and can optimize the angles of the groove wall surfaces of the circumferential zigzag grooves 11 and circumferential straight grooves 12, effectively preventing stone trapping.

[0033] As Figure 1As shown, the number of circumferential straight grooves 12 is two, and the tread pattern structure further includes a circumferential center-crown decorative groove 13, which is arranged between the two circumferential straight grooves 12; or the number of circumferential straight grooves 12 is three.

[0034] When the tire specifications are 385 / 55R22.5 and 385 / 65R22.5, in addition to the two circumferential zigzag grooves 11 and the two circumferential straight grooves 12, the tread pattern structure further includes a circumferential center-crown decorative groove 13 arranged in the middle of the tire crown, which enhances the drainage performance and wet grip ability of the tire while ensuring the beauty of the tread pattern.

[0035] When the tire has an ultra-wide tread surface with specifications such as 435 / 50R19.5 and 445 / 45R19.5, the tread pattern structure includes two circumferential zigzag grooves 11 and three circumferential straight grooves 12. The closed setting of the two shoulder tread strips 22 can improve the rigidity of the tire shoulders, reduce the heat generation during driving and turning of the tire, thereby reducing the rolling resistance of the tire and increasing the wear resistance of the tire at the same time.

[0036] As Figure 1 shown, when the tread pattern structure includes a circumferential center-crown decorative groove 13, the circumferential center-crown decorative groove 13 includes a plurality of center-crown groove parts connected in sequence along the circumferential direction of the tire. Each center-crown groove includes a fifth groove section 131 and a sixth groove section 132 connected to each other. The extending direction of the notch of the fifth groove section 131 is the same as the extending direction of the groove bottom, and the extending direction of the notch and the groove bottom of the sixth groove section 132 is the same; the third included angle E between the extending direction of the groove bottom of the fifth groove section 131 and the extending direction of the groove bottom of the sixth groove section 132 is an obtuse angle; wherein, the value range of the third included angle E is 150° ≤ E ≤ 160°; and / or the width of the notch of the fifth groove section 131 and the width of the notch of the sixth groove section 132 are both greater than or equal to 1 mm and less than or equal to 2 mm; and / or the depth of the fifth groove section 131 and the depth of the sixth groove section 132 are both greater than or equal to 1.5 mm and less than or equal to 3 mm; and / or the length of the fifth groove section 131 is greater than the length of the sixth groove section 132.

[0037] As Figure 1 shown, the zigzag steel sheet 31 includes a first segment 32, a second segment 33 and a third segment 34 connected in sequence. The first segment 32 and the third segment 34 are parallel to each other. The included angles between the second segment 33 and the first segment 32 and the third segment 34 are both obtuse angles. The depth of the second segment 33 is greater than the depth of the first segment 32 and greater than the depth of the third segment 34; wherein, the first segment 32 is connected to the turning point of the corresponding circumferential zigzag groove 11, and the third segment 34 is connected to the adjacent circumferential straight groove 12.

[0038] In this way, the first segment 32, the second segment 33 and the third segment 34 of the zigzag steel sheet 31 together form a "Z"-shaped steel sheet structure, which can puncture the water film when the tire is running on a wet road surface, improve the wet skid resistance of the tire, and enhance the tire's grip ability.

[0039] Two zigzag steel sheet groups 30 of the tread pattern structure of the tire of the present utility model divide the corresponding intermediate tread strip 210 into a plurality of aesthetically pleasing tread blocks. Their arrangement is relatively compact, resulting in a high saturation of the tread pattern structure. On tires with a wide tread surface such as 385 / 55R22.5 and 385 / 65R22.5, the rigidity of each tread block can be ensured, avoiding the occurrence of tread chunking due to insufficient rigidity of the tread blocks during tire operation. At the same time, the high-saturation tread pattern structure can reduce the rolling resistance during operation, further avoiding the occurrence of tread chunking due to insufficient rigidity of the tread blocks.

[0040] In addition, the depth of the second segment 33 of the zigzag steel sheet 31 is set to be greater than the depth of the first segment 32 and greater than the depth of the third segment 34, improving the wear resistance of the tire.

[0041] As Figure 1 shown, two transverse steel sheet groups 40 are respectively arranged on both relative sides of each circumferential zigzag groove 11 and / or each circumferential straight groove 12. Each transverse steel sheet group 40 includes a plurality of transverse steel sheets 41 arranged at intervals in sequence along the circumferential direction of the tire. The plurality of transverse steel sheets 41 of one transverse steel sheet group 40 and the plurality of transverse steel sheets 41 of the other transverse steel sheet group 40 are arranged in a staggered manner along the circumferential direction of the tire; wherein, each transverse steel sheet 41 is parallel to the rotation axis of the tire, one end of each transverse steel sheet 41 is connected to the turning point of the corresponding circumferential zigzag groove 11 or the corresponding circumferential straight groove 12, and the other end of each transverse steel sheet 41 extends in a direction away from the corresponding circumferential zigzag groove 11 or the corresponding circumferential straight groove 12.

[0042] As Figure 2 shown, each transverse steel sheet 41 includes a connected fourth segment 42 and a fifth segment 43. The fourth segment 42 is located on the tread surface of the tire, and the fifth segment 43 is located on the side of the fourth segment 42 close to the rotation axis of the tire; wherein, the width w of the fourth segment 42 is less than the width of the notch of the corresponding circumferential zigzag groove 11 or the width of the notch of the corresponding circumferential straight groove 12; and / or the maximum depth of each transverse steel sheet 41 is h0, and the depths of the circumferential zigzag groove 11 and the circumferential straight groove 12 are both h, wherein, h0 / h = 2 / 3; and / or the value range of the width w of the fourth segment 42 is 7mm ≤ w ≤ 10mm; and / or the value range of the depth h1 of the fourth segment 42 is 1.5mm ≤ h1 ≤ 3mm.

[0043] In this way, by respectively arranging two groups of transverse steel sheets 40 on both opposite sides of each circumferential zigzag groove 11 and / or each circumferential straight groove 12, the drainage performance of the tire can be improved, and at the same time, the deformation of the corresponding circumferential zigzag groove 11 or circumferential straight groove 12 can be made more uniform, reducing the noise generated during the driving of the tire and improving the riding comfort of the vehicle.

[0044] As Figure 1 shown, the tread pattern structure includes a first tread pitch, a second tread pitch, and a third tread pitch. The lengths of the first tread pitch, the second tread pitch, and the third tread pitch are P1, P2, and P3 respectively; wherein, P1 > P2 > P3.

[0045] Specifically, the numbers of the first tread pitch, the second tread pitch, and the third tread pitch are N1, N2, and N3 respectively; wherein, N1:N2:N3 = 1:2:1; and / or the ratio of the lengths of the first tread pitch, the second tread pitch, and the third tread pitch, P1:P2:P3 = [1.08, 1.21]:[1.00, 1.08]:[1.00, 1.21].

[0046] In this way, the first tread pitch, the second tread pitch, and the third tread pitch of the tread pattern structure of the tire of the present utility model are arranged irregularly along the circumference of the tire, which can better disperse the sound wave energy, effectively reducing the pitch noise caused by pitch resonance and the resonance noise in the tread pattern structure, and reducing the noise peak value.

[0047] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

[0048] The tread of the tire of the present utility model is provided with a tread pattern structure, which is a centrosymmetric structure. The tread pattern structure includes: two circumferential zigzag grooves 11, which are arranged at intervals along the rotation axis of the tire to divide the tread pattern structure into an intermediate tread portion 21 and two shoulder tread strips 22 respectively located on both sides of the intermediate tread portion 21; a plurality of circumferential straight grooves 12, which are arranged at intervals along the rotation axis of the tire between the two circumferential zigzag grooves 11 to divide the intermediate tread portion 21 into a plurality of intermediate tread strips 210; two zigzag steel sheet groups 30, which are respectively arranged corresponding to the two circumferential zigzag grooves 11. Each zigzag steel sheet group 30 includes a plurality of zigzag steel sheets 31 arranged at intervals in sequence along the circumference of the tire. One end of each zigzag steel sheet 31 is connected to the corresponding circumferential zigzag groove 11, and the other end of each zigzag steel sheet 31 is connected to the adjacent circumferential straight groove 12. In this way, the tread pattern structure of the tire of the present utility model divides the tread pattern structure into two shoulder tread strips 22 and a plurality of intermediate tread strips 210 by arranging two circumferential zigzag grooves 11 and a plurality of circumferential straight grooves 12 located between the two circumferential zigzag grooves 11, and divides the corresponding intermediate tread strips 210 into a plurality of tread blocks by arranging two zigzag steel sheet groups 30. Its arrangement is relatively compact, with a high saturation, which improves the tread rigidity, reduces the heat generation of the tire during driving, especially during turning, reduces the rolling resistance of the tire, increases the wear resistance of the tire, and the noise generated by vibration is also lower. It can improve the drainage performance of the tire, enhance the fuel economy of the vehicle, solves the problem in the prior art that there is a lack of a special trailer tire with a tread pattern having low rolling resistance, excellent wet grip ability, good wear resistance and low noise, improves the driving safety and comfort, and enhances the aesthetic effect of the tire.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0050] Unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0051] In the description of the present application, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal", and "top, bottom" is generally based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0052] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to cover different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0053] In addition, it should be noted that the use of words such as "first", "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, the above words have no special meanings, and thus cannot be construed as limiting the protection scope of the present application.

[0054] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A tire, characterized in that, A tread pattern structure is provided on the tread of the tire. The tread pattern structure is a centrosymmetric structure and includes: Two circumferential zigzag grooves (11) which are arranged at intervals along the rotation axis of the tire to divide the tread pattern structure into an intermediate tread portion (21) and two shoulder tread strips (22) respectively located on both sides of the intermediate tread portion (21); A plurality of circumferential straight grooves (12) which are arranged at intervals along the rotation axis of the tire between the two circumferential zigzag grooves (11) to divide the intermediate tread portion (21) into a plurality of intermediate tread strips (210); Two zigzag steel sheet groups (30) which are respectively arranged corresponding to the two circumferential zigzag grooves (11). Each zigzag steel sheet group (30) includes a plurality of zigzag steel sheets (31) which are arranged at intervals in sequence along the circumference of the tire. One end of each zigzag steel sheet (31) is connected to the corresponding circumferential zigzag groove (11), and the other end of each zigzag steel sheet (31) is connected to the adjacent circumferential straight groove (12).

2. The tire according to claim 1, characterized in that, The circumferential zigzag groove (11) includes a plurality of zigzag groove portions which are connected in sequence along the circumference of the tire. Each zigzag groove portion includes a first groove section (111) and a second groove section (112) which are connected. The extending direction of the groove opening of the first groove section (111) is the same as the extending direction of the groove bottom, and the extending direction of the groove opening of the second groove section (112) is the same as the extending direction of the groove bottom; the first included angle A between the extending direction of the groove bottom of the first groove section (111) and the extending direction of the groove bottom of the second groove section (112) is an obtuse angle; wherein, The value range of the first included angle A is 150°≤A≤160°; and / or The widths of the groove openings of the first groove section (111) and the second groove section (112) are both B, wherein 13mm≤B≤16mm; and / or The length of the first groove section (111) is equal to the length of the second groove section (112).

3. The tire according to claim 1, characterized in that, The circumferential straight groove (12) includes a plurality of straight groove portions which are connected in sequence along the circumference of the tire. Each straight groove includes a third groove section (121) and a fourth groove section (122) which are connected. The extending direction of the groove opening of the third groove section (121) is cross - arranged with the extending direction of the groove bottom, and the extending direction of the groove opening and the groove bottom of the fourth groove section (122) are cross - arranged; the extending directions of the groove openings of the third groove section (121) and the fourth groove section (122) are both perpendicular to the rotation axis of the tire, and the second included angle C between the extending direction of the groove bottom of the third groove section (121) and the extending direction of the groove bottom of the fourth groove section (122) is an obtuse angle; wherein, The value range of the second included angle C is 150°≤C≤160°; and / or The widths of the third groove segment (121) and the fourth groove segment (122) are both D, where D ranges from 13 mm to 16 mm; and / or The length of the third groove segment (121) is greater than the length of the fourth groove segment (122).

4. The tire according to claim 1, wherein The number of the circumferential straight grooves (12) is two, and the tread pattern structure further includes a circumferential crown center decorative groove (13), and the circumferential crown center decorative groove (13) is arranged between the two circumferential straight grooves (12); or The number of the circumferential straight grooves (12) is three.

5. The tire according to claim 4, characterized in that, When the tread pattern structure includes the circumferential crown center decorative groove (13), the circumferential crown center decorative groove (13) includes a plurality of crown center groove portions connected in sequence along the circumference of the tire, and each of the crown center grooves includes a fifth groove segment (131) and a sixth groove segment (132) connected to each other. The extending direction of the notch and the bottom of the fifth groove segment (131) is the same, and the extending direction of the notch and the bottom of the sixth groove segment (132) is the same; the third included angle E between the extending direction of the bottom of the fifth groove segment (131) and the extending direction of the bottom of the sixth groove segment (132) is an obtuse angle; wherein The value range of the third included angle E is 150°≤E≤160°; and / or The widths of the notch of the fifth groove segment (131) and the notch of the sixth groove segment (132) are both greater than or equal to 1 mm and less than or equal to 2 mm; and / or The depths of the fifth groove segment (131) and the sixth groove segment (132) are both greater than or equal to 1.5 mm and less than or equal to 3 mm; and / or The length of the fifth groove segment (131) is greater than the length of the sixth groove segment (132).

6. The tire according to claim 1, characterized in that, The zigzag steel sheet (31) includes a first segment (32), a second segment (33) and a third segment (34) connected in sequence. The first segment (32) and the third segment (34) are parallel to each other, and the included angles between the second segment (33) and the first segment (32) and the third segment (34) are both obtuse angles. The depth of the second segment (33) is greater than the depth of the first segment (32) and greater than the depth of the third segment (34); wherein, the first segment (32) is connected to the turning point of the corresponding circumferential zigzag groove (11), and the third segment (34) is connected to the adjacent circumferential straight groove (12).

7. The tire according to claim 1, wherein Two transverse steel sheet groups (40) are respectively arranged on the opposite sides of each of the circumferential zigzag grooves (11) and / or each of the circumferential straight grooves (12). Each of the transverse steel sheet groups (40) includes a plurality of transverse steel sheets (41) arranged at intervals in sequence along the circumference of the tire. The plurality of transverse steel sheets (41) of one transverse steel sheet group (40) and the plurality of transverse steel sheets (41) of the other transverse steel sheet group (40) are arranged in a staggered manner along the circumference of the tire; Among them, each of the transverse steel sheets (41) is parallel to the rotation axis of the tire. One end of each of the transverse steel sheets (41) is connected to the turning point of the corresponding circumferential zigzag groove (11) or the corresponding circumferential straight groove (12), and the other end of each of the transverse steel sheets (41) extends in a direction away from the corresponding circumferential zigzag groove (11) or the corresponding circumferential straight groove (12).

8. The tire according to claim 7, wherein, Each of the transverse steel sheets (41) includes a connected fourth segment (42) and a fifth segment (43). The fourth segment (42) is located on the tread of the tire, and the fifth segment (43) is located on a side of the fourth segment (42) close to the rotation axis of the tire; among them, the width w of the fourth segment (42) is smaller than the width of the notch of the corresponding circumferential zigzag groove (11) or the width of the notch of the corresponding circumferential straight groove (12); and / or the maximum depth of each of the transverse steel sheets (41) is h0, and the depths of the circumferential zigzag groove (11) and the circumferential straight groove (12) are both h, where h0 / h = 2 / 3; and / or the value range of the width w of the fourth segment (42) is 7 mm ≤ w ≤ 10 mm; and / or the value range of the depth h1 of the fourth segment (42) is 1.5 mm ≤ h1 ≤ 3 mm.

9. The tire according to claim 1, characterized in that, The tread pattern structure includes a first tread pitch, a second tread pitch, and a third tread pitch. The lengths of the first tread pitch, the second tread pitch, and the third tread pitch are P1, P2, and P3 respectively; among them, P1 > P2 > P3.

10. The tire according to claim 9, wherein the numbers of the first tread pitch, the second tread pitch, and the third tread pitch are N1, N2, and N3 respectively; among them, N1:N2:N3 = 1:2:1; and / or the ratio of the lengths of the first tread pitch, the second tread pitch, and the third tread pitch P1:P2:P3 = [1.08, 1.21]:[1.00, 1.08]:[1.00, 1.21].[[]END]]

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