CN209776052U - novel tire bead reinforcing structure - Google Patents

Abstract

The utility model discloses a novel tire bead reinforcing structure, which comprises a tire body, a tire cord fabric, a steel wire ring, a triangular rubber core, a tire toe, a tire heel and a tire side, wherein a reinforcing rubber strip is arranged between the outer side of the turn-up end of the tire cord fabric and the tire side and the tire heel, the lower end point of the reinforcing rubber strip is positioned above the lower end point of the tire heel, a steel wire ring wrapping cloth is arranged between the outer sides of the steel wire ring and the triangular rubber core and between the inner sides of the turn-up ends of the tire cord fabric and the tire cord fabric, and the end points of the steel wire ring wrapping cloth are positioned at the waist parts at two sides of the triangular rubber core. The risk of cord fabric breakage is avoided, so that tire burst is avoided, and the use safety is improved.

Description

Novel tire bead reinforcing structure

Technical Field

The utility model relates to a tire manufacturing technical field specifically is a novel tire bead reinforcing structure.

Background

Tires made of rubber, fiber, and metal frame material deform when a certain air pressure is applied. When the tire runs, a certain part of the tire is subjected to a larger force due to the action of applied load, driving force, braking force, transverse force and the like, and the analysis of an FEA simulation tool can find that the stress applied to the tire at the seam allowance part is larger. In addition, the existing tire structure design technology can gather a large number of end points at the seam allowance part, so that the stress concentration at the tire opening part is caused, and the durability of the tire is further unfavorable. In actual use, the tire bead delamination appears, and the driving safety of the automobile is seriously influenced.

At present, a plurality of tire manufacturers pay attention to the improvement of the durability of the position, the conventional single-layer curtain cloth turn-up structure design has limited durability, and the common requirements of high load and economy of the tire on the market at present cannot be met. In the design of the tire reinforcing layer, the most adopted method at present is to supplement the reinforcing layer or add a nylon cloth reinforcing layer at the seam allowance part, but in the actual use process, the durability of the nylon cloth reinforcing layer is unstable, and the cost is higher.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel tire bead reinforcing structure, adopt the tire bead structural design of individual layer cord fabric layer and have reinforcement adhesive tape and steel wire winding infantees, increase bead intensity, and then improve the life-span of tire bead, promote the durability of tire to solve the problem of proposing in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a novel tire bead reinforcing structure, includes matrix, casing ply, steel wire winding, triangle rubber core, child toe, child heel and side wall, the reinforcement adhesive tape has been arranged between the turn-up end outside of casing ply and side wall and child heel, the lower extreme point of reinforcement adhesive tape is located the child heel lower extreme point top, steel wire winding and triangle rubber core outside and casing ply turn-up end are inboard between arranged steel wire winding infantees, and the extreme point of steel wire winding infantees is located triangle rubber core both sides waist.

As a further aspect of the present invention: the distance L between the lower end point of the reinforcing rubber strip and the lower end point of the bead heel₁Satisfies the following conditions: l is more than or equal to 0₁The thickness of the reinforcing rubber strip is less than or equal to 24.2mm, the length of the reinforcing rubber strip is 10-150 mm, and the thickness of the reinforcing rubber strip is 0.2-5.8 mm.

As a further aspect of the present invention: the vertical height H of the end point of the steel wire ring wrapping cloth close to one side of the cord fabric layer and away from the lower end point of the bead toe₁Satisfies the following conditions: h is not more than 2.3mm₁Not more than 123.4mm, the vertical height H of the end point of the steel wire ring wrapping cloth close to one side of the turn-up end of the cord fabric layer and the lower end point of the bead heel₂Satisfies the following conditions: h is not less than 3.1mm₂The length of the steel wire ring wrapping cloth is less than or equal to 145.2mm, and the length of the steel wire ring wrapping cloth is 5.2-204.7 mm.

As a further aspect of the present invention: the ply turnup point is located above the maximum thickness of the sidewall.

As a further aspect of the present invention: the glue material of the reinforcing glue strip is the same as the outer surface coating glue of the cord fabric layer.

As a further aspect of the present invention: the ply is a single layer arrangement.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses novel structure adopts the individual layer cord fabric and has the tire bead structural design of reinforcement adhesive tape and steel wire winding infantees, and this kind of structural design equilibrium stress distribution when evading the material extreme point of bead increases bead intensity, and then improves the life-span of tire bead, promotes the durability of tire, reduces tire bead delaminating phenomenon, reduces the frictional heating simultaneously, avoids the cracked risk of cord fabric to avoid the tire to blow out, improve the security of using.

Drawings

FIG. 1 is a schematic view of the overall structure of a novel tire bead reinforcement structure;

FIG. 2 is a partial structural view of a novel tire bead reinforcing structure;

In the figure: 1-carcass, 2-cord fabric layer, 3-steel wire ring, 4-bead filler, 5-bead toe, 6-bead heel, 7-tire side, 8-reinforcing rubber strip and 9-steel wire ring wrapping cloth.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-2, in the embodiment of the present invention, a novel tire bead reinforcement structure comprises a tire body 1, a tire cord fabric 2, a bead ring 3, a bead apex core 4, a bead toe 5, a bead heel 6 and a tire sidewall 7, wherein the tire cord fabric 2 is arranged in a single layer, the structural design of the single layer tire cord fabric can reduce the material of the tire cord fabric, reduce the production cost, and simultaneously facilitate to reduce the number of the end points of the tire cord fabric, thereby improving the durability, a reinforcement rubber strip 8 is arranged between the outer side of the turn-up end of the tire cord fabric 2 and the tire sidewall 7 and the bead heel 6, the rubber material of the reinforcement rubber strip 8 keeps consistent with the rubber coating of the tire body tire cord fabric, the components are mainly synthesized by natural rubber, butadiene styrene rubber and butadiene rubber in a banburying manner, and the like, the same rubber material makes the viscosity of the reinforcement rubber strip better, the rigidity is, the cost of the reinforcing rubber strip 8 is lower than that of the winding cloth, the manufacturing process is simpler, and the cost can be controlled during mass production;

Meanwhile, the turn-up end point of the cord fabric layer 2 is positioned above the maximum thickness of the tire side, the lower end point of the reinforcing rubber strip 8 is positioned above the lower end point of the bead heel, and the distance L between the lower end point of the reinforcing rubber strip 8 and the lower end point of the bead heel₁Satisfies the following conditions: l is more than or equal to 0₁Less than or equal to 24.2mm, the reinforcing rubber strip 8 can cover the contact area of the rim and the tireThe tire is stressed maximally, the reinforcement rubber strip 8 can improve the adhesion of the cord fabric and the sidewall rubber in the area and avoid the separation of the two materials, the height of the reinforcement rubber strip 8 is 10-150 mm, the height of the reinforcement rubber strip can avoid the upper end point of RC rubber, the phenomenon that the end point is too close to cause stress concentration is avoided, the thickness of the reinforcement rubber strip 8 is 0.2-5.8 mm, the reinforcement rubber strip increases the strength of the bead opening, avoids the material end point of the bead opening, balances stress distribution, further prolongs the service life of the bead opening of the tire, improves the durability of the tire, and reduces the delamination phenomenon of the bead;

A bead ring wrapping cloth 9 is arranged between the outer sides of the bead ring 3 and the bead filler 4 and the inner sides of the turn-up ends of the cord fabric layer 2 and the cord fabric layer 2, the end points of the bead ring wrapping cloth 9 are positioned at the waist parts at two sides of the bead filler, and the vertical height H of the bead ring wrapping cloth 9, which is close to the end point at one side of the cord fabric layer, away from the lower end point of the bead toe₁Satisfies the following conditions: h is not more than 2.3mm₁Not more than 123.4mm, the vertical height H of the end point of the steel wire ring wrapping cloth 9 close to one side of the turn-up end of the cord fabric layer 2 and the lower end point of the bead heel 6₂Satisfies the following conditions: h is not less than 3.1mm₂145.2mm is not more than, and the length of steel wire winding infantees 9 is 5.2 ~ 204.7mm, and the material of steel wire winding infantees 9 generally is nylon cloth, and steel wire and curtain cloth's direct contact can have been avoided to steel wire winding infantees 9, can effectively reduce the frictional heating, avoids the cracked risk of curtain cloth to avoid the risk of blowing out.

The utility model discloses novel structure, reasonable in design, the utility model discloses a tire bead structural design of individual layer cord fabric layer and reinforcement adhesive tape and steel wire winding infantees has, this kind of structural design equilibrium stress distribution when avoidng the material extreme point of bead increases bead intensity, and then improves the life-span of tire bead, promotes the durability of tire, reduces tire bead delaminating phenomenon, reduces the frictional heating simultaneously, avoids the cracked risk of cord fabric to avoid the tire to blow out, improve the security of using.

it is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. The utility model provides a novel tire bead reinforcing structure, includes matrix (1), ply (2), steel wire winding (3), apex (4), child toe (5), child heel (6) and side wall (7), its characterized in that: and a reinforcing rubber strip (8) is arranged between the outer side of the turn-up end of the cord fabric layer and the tire side and the tire heel, the lower end point of the reinforcing rubber strip is positioned above the lower end point of the tire heel, bead ring wrapping cloth (9) is arranged between the outer sides of the bead ring and the triangular rubber core and the inner sides of the turn-up end of the cord fabric layer and the cord fabric layer, and the end points of the bead ring wrapping cloth are positioned at the waist parts on two sides of the triangular rubber core.

2. A new type of tire bead reinforcing structure according to claim 1, characterized in that the distance L between the lower end point of said reinforcing strip (8) and the lower end point of the bead heel₁Satisfies the following conditions: l is more than or equal to 0₁Is less than or equal to 24.2mm, the length of the reinforcing rubber strip is 10-150 mm, and the thickness of the reinforcing rubber strip is 0.2-5.8 mm.

3. A novel bead reinforcing structure for tires according to claim 1, characterized in that said flipper (9) is close to the vertical height H from the end point of one side of the carcass ply to the lower end point of the bead toe₁Satisfies the following conditions: h is not more than 2.3mm₁Not more than 123.4mm, the side of the steel wire ring wrapping cloth close to the reverse wrapping end of the cord fabric layerthe vertical height H of the end point from the lower end point of the bead heel₂Satisfies the following conditions: h is not less than 3.1mm₂The length of the steel wire ring wrapping cloth is less than or equal to 145.2mm, and the length of the steel wire ring wrapping cloth is 5.2-204.7 mm.

4. A new type of tire bead reinforcement structure as claimed in claim 1, characterized by the fact that said ply (2) turnup point is located above the maximum thickness of the sidewall.

5. A new type of tire bead reinforcement structure according to claim 1, characterized in that the sizing of said reinforcing strip (8) is the same as the coating of the outer surface of the carcass ply.

6. A new type of tire bead reinforcement structure as claimed in claim 1, characterized in that said carcass ply (2) is of single-layer arrangement.