New energy automobile tire

Abstract

The utility model provides a new energy automobile tire, which belongs to the technical field of tires, a tread pattern comprises a plurality of longitudinal grooves and a plurality of pattern ribs, the longitudinal grooves extend and are distributed along the circumferential direction of a tread, the pattern ribs are divided by the longitudinal grooves and extend and are distributed along the circumferential direction, and each pattern rib sequentially comprises a central pattern rib, a central pattern rib and a central pattern rib from the center line of the tread to a tire shoulder. A plurality of middle transverse grooves are formed in the middle pattern ribs at intervals, the depths of the middle transverse grooves are gradually reduced from the two ends of the grooves to the centers of the grooves, and pattern rib structures are formed in the centers of the middle transverse grooves; a first middle steel sheet is further arranged on the middle pattern rib, the first middle steel sheet penetrates through the middle of the middle transverse groove, and the included angle between the first middle steel sheet and the circumferential direction of the tread ranges from 70 degrees to 110 degrees. The new energy automobile tire has the advantages of being excellent in control performance and wetland performance, effectively reducing noise and improving comfort and driving experience.

Description

Technical Field

[0001] This utility model belongs to the field of tire technology, and in particular relates to a new energy vehicle tire. Background Technology

[0002] In recent years, with the rapid development of new energy vehicles in China, mid-to-high-end models of new energy vehicles have also been launched. These models have performed exceptionally well in the market, enjoying popularity among consumers due to their longer driving range, shorter braking distance, and superior handling performance. Compared to ordinary new energy vehicles, mid-to-high-end models place even greater emphasis on comfort and driving experience, which places more stringent demands on the performance of their tires.

[0003] Currently, the use of more rigid tread patterns is employed to ensure the comfort and driving experience of new energy vehicle tires. However, due to the large torque output of new energy vehicle motors and the significant instantaneous braking / driving forces, the use of more rigid tread patterns can negatively impact some comfort performance. Therefore, based on the performance requirements and analysis of the aforementioned mid-to-high-end new energy vehicle models, this utility model provides a new energy vehicle tire. Utility Model Content

[0004] Details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects and advantages of the present application more readily apparent.

[0005] This utility model proposes a new energy vehicle tire that solves the technical problem that existing technologies using more rigid tread designs to ensure the comfort and driving experience of new energy vehicle tires can affect some comfort performance. It features excellent handling and wet performance, effectively reduces noise, and improves comfort and driving experience.

[0006] This utility model discloses a new energy vehicle tire. The tread pattern includes multiple longitudinal grooves extending circumferentially along the tread, and multiple tread ribs extending circumferentially from the longitudinal grooves. The tread ribs, from the centerline of the tread to the shoulder, include a central tread rib, a middle tread rib, and a shoulder tread rib. The middle tread rib has multiple central transverse grooves spaced apart. The depth of the central transverse grooves gradually decreases from the two ends of the grooves towards the center, and a tread rib structure is formed at the center of the central transverse groove. A first central steel sheet is also provided on the central tread rib. The first central steel sheet penetrates the middle of the central transverse groove, and the angle between the first central steel sheet and the circumferential direction of the tread is 70° to 110°.

[0007] In some embodiments, the depths at both ends of the central transverse groove are 1 / 2 to 3 / 4 of the depth of the adjacent longitudinal groove, respectively.

[0008] In some embodiments, the depth of the patterned rib at the center of the central transverse groove is 1 / 3 to 2 / 3 of the deepest depth of the central transverse groove, and the width of the patterned rib is 1 / 4 to 1 / 2 of the total width of the central transverse groove.

[0009] In some embodiments, a second central steel sheet is provided between adjacent first central steel sheets on the central patterned rib, and the two ends of the second central steel sheet are respectively connected to adjacent central transverse grooves.

[0010] In some embodiments, a plurality of inclined central transverse steel sheets are spaced apart on the central patterned rib.

[0011] In some embodiments, the central transverse steel sheet has a Z-shaped structure, and the depth of the central transverse steel sheet gradually becomes shallower from both ends toward the center.

[0012] In some embodiments, multiple semi-enclosed shoulder transverse grooves are provided at intervals on the shoulder patterned ribs. The shoulder transverse grooves are connected to the adjacent longitudinal grooves at one end with a stepped structure. The depth of the step is 1 / 4 to 1 / 3 of the depth of the shoulder transverse groove.

[0013] In some embodiments, the longitudinal groove includes a central longitudinal groove located between the central patterned rib and the middle patterned rib, and a shoulder longitudinal groove located between the middle patterned rib and the shoulder patterned rib, wherein the width of the shoulder longitudinal groove is 0.2 to 1.0 mm wider than the width of the central longitudinal groove, and the depth of the shoulder longitudinal groove is 0.5 to 1.5 mm shallower than the depth of the central longitudinal groove.

[0014] In some embodiments, the tread pattern adopts a variable pitch pattern design, with five different pitches in order of increasing pitch, and the length ratio of the five pitches is 0.8:0.9:1.0:1.1:1.2.

[0015] In some of these embodiments, the land-sea ratio of the tread pattern is 71% to 75%.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] (1) The new energy vehicle tire of this utility model can reasonably distribute the rigidity of the tread blocks by setting cross-shaped transverse grooves and steel sheets on the central tread ribs, effectively reducing road noise, improving the absorption and wrapping performance of complex road impacts, and improving comfort; the transverse grooves form a tread rib structure at the center of the transverse grooves through a variable depth structure design, which greatly improves the connection strength of each tread block and meets the balance of various performances such as high torque, short braking and handling safety of the vehicle.

[0018] (2) The new energy vehicle tire of this utility model has multiple inclined variable depth structure central transverse steel pieces set at intervals on the central tread rib, which become shallower at the center of the central transverse steel pieces to form a reinforced structure, thereby improving the connection strength of the tread blocks.

[0019] (3) The new energy vehicle tire of this utility model improves the rigidity of the shoulder tread rib by setting a semi-closed shoulder transverse groove on the shoulder tread rib, so that the shoulder can provide stronger support when the vehicle is turning or braking, improve handling stability and braking feedback, and thus improve vehicle safety performance; the shoulder transverse groove has a stepped structure, which can also effectively reduce air noise and improve the driving experience. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with their descriptions, serve to explain the present invention and do not constitute an undue limitation thereof. Wherein:

[0021] Figure 1 A schematic diagram of the tread pattern of a new energy vehicle tire provided in an embodiment of this utility model;

[0022] In the attached diagram: 1. Central patterned rib, 2. Central longitudinal groove, 3. Middle patterned rib, 4. Shoulder longitudinal groove, 5. Shoulder patterned rib, 6. Central transverse steel plate, 7. Middle transverse groove, 8. First middle steel plate, 9. Second middle steel plate, 10. Shoulder transverse groove, 11. Shoulder steel plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be understood that the terms "center," "lateral," "longitudinal," "upper," "lower," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," and "third" may explicitly or implicitly include one or more of that feature. The term "longitudinal" refers to the direction in which the tire rolls; the term "lateral" refers to the direction perpendicular to the mid-surface of the tire.

[0025] This utility model provides a new energy vehicle tire with symmetrical tread patterns. The tread pattern is designed and optimized with steel strip distribution and an optimal land-sea ratio to meet the performance requirements of new energy vehicles. This significantly improves the tire's driving feel and comfort while meeting rolling resistance and grip requirements. This new energy vehicle tire features excellent handling and wet performance, effectively reduces noise, and enhances comfort and driving experience. Figure 1 This is a schematic diagram of the tread pattern structure of a new energy vehicle tire according to an embodiment of the present invention. (Reference) Figure 1As shown, the tread pattern structure of the new energy vehicle tire includes: multiple longitudinal grooves extending along the circumference of the tread, and multiple pattern ribs extending along the circumference of the longitudinal grooves. Each pattern rib is provided with multiple transverse steel plates. The tread pattern, extending from the tire centerline to the shoulder, includes a central tread rib 1, a middle tread rib 3, and a shoulder tread rib 5. The middle tread rib 3 features multiple angled central lateral grooves 7. These grooves 7 have a variable depth design, gradually decreasing in depth from both ends towards the center, forming a tread rib structure at the center. The depths at both ends of the central lateral groove 7 are 1 / 2 to 3 / 4 of the depth of the adjacent longitudinal grooves, while the depth of the tread rib at the center is 1 / 3 to 2 / 3 of the deepest point of the central lateral groove 7. The width of the tread rib is 1 / 4 to 1 / 2 of the total width of the central lateral groove 7. This reinforced tread rib structure significantly enhances the connection strength of the tread blocks, achieving a balance between high torque, short braking distance, and handling safety. In a preferred embodiment, a first central steel plate 8 is further provided on the central tread rib 3. The first central steel plate 8 penetrates the middle of the central transverse groove 7, and the angle between the first central steel plate 8 and the circumferential direction of the tread is 70° to 110°. A second central steel plate 9 is also provided between adjacent first central steel plates 8 on the central tread rib 3, and the two ends of the second central steel plate 9 are respectively connected to adjacent central transverse grooves 7. By providing intersecting central transverse grooves 7 and central steel plates on the central tread rib 3, the rigidity of the tread blocks can be reasonably distributed, effectively reducing road noise, improving the absorption and containment performance of complex road impacts, and thus improving comfort.

[0026] The present invention relates to a new energy vehicle tire tread pattern in which multiple inclined central transverse steel plates 6 are arranged at intervals on the central tread rib 1. The central transverse steel plates 6 have a Z-shaped structure, and the depth of the central transverse steel plates gradually becomes shallower from both ends to the center. A protrusion is formed at the center of the central transverse steel plate, which plays a reinforcing role and greatly improves the connection strength of each tread block, so as to meet the balance of various performances of the vehicle such as high torque, short braking and handling safety.

[0027] To enhance the rigidity of the shoulder rib 5, providing stronger support during cornering or braking, improving handling stability and braking feedback, and ultimately enhancing vehicle safety, multiple semi-enclosed shoulder transverse grooves 10 are spaced apart on the shoulder rib 5. One end of each shoulder transverse groove 10 connects to an adjacent longitudinal groove in a stepped structure, with the depth of the step being 1 / 4 to 1 / 3 of the depth of the shoulder transverse groove 10. This stepped, semi-enclosed shoulder transverse groove 10 effectively reduces air noise and improves the driving experience. In a preferred embodiment, a shoulder steel plate assembly is further provided between adjacent shoulder transverse grooves 10, comprising multiple staggered shoulder steel plates 11.

[0028] The longitudinal grooves of the tire tread pattern of this utility model for new energy vehicles include a central longitudinal groove located between the central tread rib and the middle tread rib 3, and a shoulder longitudinal groove 4 located between the middle tread rib 3 and the shoulder tread rib 5. The width of the shoulder longitudinal groove 4 is 0.2–1.0 mm wider than the width of the central longitudinal groove, and the depth of the shoulder longitudinal groove 4 is 0.5–1.5 mm shallower than the depth of the central longitudinal groove. By setting four longitudinal grooves of different sizes on the tire tread, excellent handling and water drainage performance of the tire are ensured.

[0029] This utility model relates to a new energy vehicle tire tread pattern that adopts a variable pitch design. Five different pitches are used, ranging from small to large, with a length ratio of 0.8:0.9:1.0:1.1:1.2. The optimal pitch arrangement is simulated using software, effectively reducing tire noise during travel. Setting the tread pattern's land-sea ratio to 71%–75% optimizes dry performance and wear resistance, increasing tire mileage.

[0030] This new energy vehicle tire utilizes a combination of longitudinal grooves, numerous lateral grooves, and steel plates in its tread to achieve excellent water drainage performance, significantly improving its wet-weather performance. Furthermore, by adjusting the material distribution in the sidewall area, this tire optimizes sidewall rigidity, enhancing and balancing handling stability and comfort. In addition, it employs a low-rolling-resistance tread / sidewall / liner / wear-resistant rubber compound, resulting in a lightweight tire design and a rolling resistance below 7.5, achieving fuel efficiency and economic benefits.

[0031] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A new energy vehicle tire, characterized in that: The tread pattern includes multiple longitudinal grooves extending circumferentially along the tread, and multiple tread ribs extending circumferentially from these longitudinal grooves. The tread ribs, from the tread centerline to the shoulder, sequentially include a central tread rib, a middle tread rib, and a shoulder tread rib. Multiple transverse grooves are spaced apart on the central patterned ribs. The depth of the transverse grooves gradually decreases from the two ends of the grooves toward the center, and a patterned rib structure is formed at the center of the transverse grooves. The central rib is also provided with a first central steel plate, which runs through the middle of the central transverse groove, and the angle between the first central steel plate and the circumferential tread is 70° to 110°.

2. The new energy vehicle tire according to claim 1, characterized in that: The depths at both ends of the transverse groove in the middle are 1 / 2 to 3 / 4 of the depth of the adjacent longitudinal groove, respectively.

3. The new energy vehicle tire according to claim 1, characterized in that: The depth of the patterned rib at the center of the central transverse groove is 1 / 3 to 2 / 3 of the deepest point of the central transverse groove, and the width of the patterned rib is 1 / 4 to 1 / 2 of the total width of the central transverse groove.

4. The new energy vehicle tire according to claim 1, characterized in that: A second central steel sheet is also provided between adjacent first central steel sheets on the central patterned rib, and the two ends of the second central steel sheet are respectively connected to the adjacent central transverse grooves.

5. The new energy vehicle tire according to claim 1, characterized in that: Multiple inclined central transverse steel plates are spaced apart on the central patterned rib.

6. The new energy vehicle tire according to claim 5, characterized in that: The central transverse steel sheet has a Z-shaped structure, and the depth of the central transverse steel sheet gradually becomes shallower from both ends toward the center.

7. The new energy vehicle tire according to claim 1, characterized in that: Multiple semi-enclosed transverse shoulder grooves are spaced apart on the shoulder patterned ribs. The transverse shoulder grooves are connected to the adjacent longitudinal grooves at one end with a stepped structure. The depth of the step is 1 / 4 to 1 / 3 of the depth of the transverse shoulder groove.

8. The new energy vehicle tire according to any one of claims 1-7, characterized in that: The longitudinal groove includes a central longitudinal groove located between the central patterned rib and the middle patterned rib, and a shoulder longitudinal groove located between the middle patterned rib and the shoulder patterned rib. The width of the shoulder longitudinal groove is 0.2 to 1.0 mm wider than the width of the central longitudinal groove, and the depth of the shoulder longitudinal groove is 0.5 to 1.5 mm shallower than the depth of the central longitudinal groove.

9. The new energy vehicle tire according to claim 8, characterized in that: The tread pattern adopts a variable pitch pattern design, with five different pitches from small to large, and the length ratio of the five pitches is 0.8:0.9:1.0:1.1:1.

2.

10. The new energy vehicle tire according to claim 8, characterized in that: The land-sea ratio of the tire tread pattern is 71% to 75%.

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