Stone clamping prevention structure for groove bottom of tire
By setting a spiral rubber extension at the bottom of the tire tread grooves, the problem of insufficient protection of traditional tire anti-stone trapping structures is solved, achieving better groove bottom protection, extending tire life and enhancing market competitiveness.
Patent Information
- Application Number
- CN202520127504.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Traditional tire anti-stone trapping structures do not provide sufficient protection for the bottom of the tread grooves, resulting in a high proportion of external damage to the bottom of the tread grooves, which affects tire life and driving safety.
A base is set at the bottom of the patterned groove, and spiral rubber extensions are set vertically at intervals on the base. The extensions are wider at the bottom and narrower at the top, with an inclination angle of 13°-18°, a height ratio of 2:1 or higher to the height of the base, and a radius ratio of 1.5:1 or higher. These extensions are used to buffer and change the running path of the stones.
It effectively protects the bottom of the tread grooves, reduces premature failure, extends tire life, enhances market competitiveness, is suitable for long-distance and harsh road conditions, does not increase the risk of heat generation, and saves costs.
Smart Images
Figure CN223821379U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tire technical field, concretely relates to a tire ditch bottom anti -stone -jamming structure. BACKGROUND
[0002] The traditional tire is often designed in two main ways to deal with stone damage: one is a large angle pattern groove, and the other is a protruding stone ejector. These two designs have their own characteristics and application scenarios, but they both have limitations in protecting against stone damage. The large angle pattern groove design increases the angle between the groove walls to reduce the probability of stones getting stuck in the groove. This design makes it easier for stones to be thrown out during driving, thereby maintaining the cleanliness and drainage performance of the groove. However, it cannot completely protect the groove bottom from stone damage, and when stones hit the bottom at high speed or large angle, it may still cause some damage. The protruding stone ejector is usually located at the bottom of the pattern groove, and its design purpose is to buffer and protect the groove bottom after the stone gets stuck. Through the elastic deformation of the stone ejector, the direct impact force of the stone on the groove bottom can be reduced. However, since the stone ejector only exists at the bottom, its protection range is limited and cannot cover the entire pattern groove area. Moreover, the protruding stone ejector mainly serves as a buffer, but it cannot effectively prevent the stone from getting stuck. Once the stone gets stuck, although the damage can be reduced, it may still affect the performance and driving safety of the tire.
[0003] Therefore, there is a need to design a new tire anti-stone-jamming structure to solve the problems existing in the current anti-stone-jamming design. SUMMARY
[0004] The technical problem to be solved by the utility model is to provide a tire groove bottom anti-stone-jamming structure that can effectively solve the problem of high pattern groove bottom damage without changing the tire pattern, reduce early failure, improve the overall life of the tire, meet market demand, and greatly improve the market competitiveness of the product in long-distance harsh road conditions with more stones.
[0005] The technical solution of the utility model is as follows:
[0006] The tire groove bottom anti-stone-jamming structure comprises a base arranged at the bottom of the pattern groove, a plurality of spiral-shaped extension parts made of rubber material are vertically and spaced apart on the base, and the extension parts are shaped with a wide bottom and a narrow top.
[0007] Preferably, the inclination angle of the extension part from the bottom to the top is 13°-18°.
[0008] Preferably, the height H of the extension part and the height h of the base satisfy H≥2h.
[0009] Preferably, the base height h≤4mm.
[0010] Preferably, the vertical section radius r2 of the bottom of the extension and the vertical section radius r1 of the top of the extension satisfy r2≥1.5×r1, and the radius R of the bottom of the extension and the vertical section radius r2 of the bottom of the extension satisfy R≥2.5×r2.
[0011] Preferably, the base is a cuboid, and two extensions are arranged on the base.
[0012] Preferably, the distance between the bottom of the extension and the outer edge of the base is≥0.5R, and the distance between the bottoms of the two extensions is≥R.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] The tire groove bottom anti-stone jamming structure of the utility model, the base can play the role of isolating the groove bottom, the extension can produce the protection effect in the three-dimensional space, the stone invading the groove bottom at high speed or at a large angle will preferentially contact the extension, the extension utilizes the self-rubber elasticity and the deformation space of the structure to produce compression buffering after contacting the stone, and the sharp angle shape of the lower width and the upper narrowness is more convenient for producing lateral deviation after stress, and thus changes the running route or slows down the speed of the stone, so that the purpose of bouncing out the stone is achieved, and the protection effect can be effectively played. Meanwhile, the extension of the utility model extends upward from the groove bottom, has the protection effect on the groove and the groove bottom, and has a certain protection effect on the groove bottoms not provided with the anti-stone jamming structure around due to the longitudinal height, and compared with the traditional stone bouncer, the structure of the utility model has advantages in the protection ability and range in all directions; and due to the longitudinal height of the extension, the protection effect is produced in the three-dimensional space, and the effect is produced before the stone is jammed, so that most of the stones can be effectively prevented from being jammed. The utility model can effectively solve the problem of high proportion of external injuries of the groove bottom without changing the tire pattern, reduce the early failure, improve the overall service life of the tire, meet the market demand, greatly improve the market competitiveness of the product in the long-distance harsh road conditions with more stones. Meanwhile, the structure design of the utility model hardly increases the heat generation risk, can reduce the external injury problem, improve the comprehensive service life, and save the cost. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is the front view of the tire groove bottom anti-stone jamming structure of the utility model.
[0016] Figure 2 is the top view of the tire groove bottom anti-stone jamming structure of the utility model.
[0017] In the drawing, 1 is the base, and 2 is the extension. DETAILED DESCRIPTION
[0018] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model.
[0019] Example 1
[0020] like Figure 1 As shown, this embodiment provides a tire groove bottom anti-stone-clamping structure, including a cuboid base 1 set at the bottom of the tread groove. Two spiral rubber extensions 2 are vertically spaced on the base 1, each extension 2 being wider at the bottom and narrower at the top. The base 1 primarily serves to isolate the bottom of the tread groove, and the extensions 2 can be better positioned for areas with large angles in the tread groove. The extensions 2, as the main working part, employ a spiral structure, utilizing their own rubber elasticity and structural deformation space to generate compression buffer upon contact with a stone. Simultaneously, the pointed shape (wider at the bottom and narrower at the top) facilitates lateral displacement under force, thereby altering the stone's intrusion trajectory and achieving the purpose of ejecting the stone.
[0021] To ensure that the extension 2 can shift laterally under stress, while avoiding bending and ensuring the proper functioning of the spiral structure, such as Figure 1 As shown, the inclination angle from the bottom to the top of the extension 2 is controlled between 13° and 18°. The design of the extension 2, wider at the bottom and narrower at the top, ensures a gradual change in radius at different locations, guaranteeing a reasonable distribution of rigidity and reducing the probability of breakage from the bottom. The vertical cross-sectional radius r2 at the bottom of the extension 2 and the vertical cross-sectional radius r1 at the top of the extension 2 must satisfy r2 ≥ 1.5 × r1 (e.g., ...). Figure 1 (As shown).
[0022] like Figures 1-2 As shown, in order to reduce the impact of the structure of this embodiment on the heat dissipation of the tread and the overall weight, the height h of the base 1 is controlled within 4mm; at the same time, in order to ensure that the extension 2 has enough space for buffering, the height H of the extension 2 and the height h of the base 1 must satisfy H≥2h, and the bottom radius R of the extension 2 and the vertical cross-sectional radius r2 of the bottom of the extension 2 must satisfy R≥2.5×r2.
[0023] As a component that isolates the bottom of the patterned groove and ensures the structural working space, the base 1 must ensure that the distance between the bottom of the extension 2 and the outer edge of the base 1 is ≥0.5R in order to provide sufficient support and buffer space for the extension 2. Figure 2 As shown, D1≥0.5R, D2≥0.5R; at the same time, in order to prevent the two extensions 2 from interfering with each other, the distance between the bottoms of the two extensions 2 must be D3≥R.
Claims
1. A tire groove bottom anti-stone trapping structure, characterized in that, It includes a base (1) set at the bottom of the patterned groove, and several spiral rubber extensions (2) are vertically spaced on the base (1), with the extensions (2) being wider at the bottom and narrower at the top.
2. The anti-stone-clamping structure at the bottom of the tire groove as described in claim 1, characterized in that, The inclination angle from the bottom to the top of the extension (2) is 13°-18°.
3. The anti-stone-clamping structure at the bottom of the tire groove as described in claim 1, characterized in that, The height H of the extension (2) and the height h of the base (1) satisfy H≥2h.
4. The anti-stone-clamping structure at the bottom of the tire groove as described in claim 3, characterized in that, The height h of the base (1) is ≤ 4 mm.
5. The anti-stone-clamping structure at the bottom of the tire groove as described in claim 1, characterized in that, The vertical cross-sectional radius r2 at the bottom of the extension (2) and the vertical cross-sectional radius r1 at the top of the extension (2) satisfy r2≥1.5×r1, and the bottom radius R of the extension (2) and the vertical cross-sectional radius r2 at the bottom of the extension (2) satisfy R≥2.5×r2.
6. The anti-stone-clamping structure at the bottom of the tire groove as described in claim 1, characterized in that, The base (1) is rectangular and has two extensions (2).
7. The anti-stone-clamping structure at the bottom of the tire groove as described in claim 6, characterized in that, The distance between the bottom of the extension (2) and the outer edge of the base (1) is ≥0.5R, and the distance between the bottoms of the two extensions (2) is ≥R.