CN205059092U - A tire bead structure - Google Patents

Abstract

The utility model belongs to the field of automobile all-steel radial tires, in particular to a tire bead structure, which comprises a bead wire ring, wherein a carcass ply and bead wire wrapping cloth are sequentially wrapped outside the bead wire ring; the cord fabric layer is wound around the bottom of the bead ring from the inner side of the bead ring and then is wrapped upwards to form a cord fabric turn-up part, an auxiliary bead ring is arranged on the bead ring, and the cord fabric turn-up part passes through the space between the bead ring and the auxiliary bead ring and extends upwards along the inner side of the auxiliary bead ring; the upper part of the auxiliary steel wire ring is provided with triangular glue. The utility model discloses an use two steel wire winding structures, special type to glue, change the anti-deformation performance of wrapping up of matrix, promote the anti-deformation performance of tire bead position, eliminate the matrix and turn up the destruction of extreme point stress concentration to the tire bead, promote anti matrix pumpback performance.

Description

A tire bead structure

technical field

The utility model belongs to the field of all-steel radial tires for automobiles, in particular to a tire bead structure.

Background technique

Under the conditions of poor road conditions, severe overloading, and high air pressure, the bead structure of existing tires is greatly deformed and bent on the rim flange. The cloth is compressed and deformed, forming stress concentration. At the same time, the large deformation causes the carcass to withdraw, and the tire has quality problems such as ring voids, ring cracks, and blasting.

Contents of the invention

Aiming at the deficiencies of the prior art, the utility model proposes to provide an all-steel radial tire bead structure that resists deformation, eliminates stress concentration and improves strength, so as to meet the requirements of the ultra-high and heavy-duty market.

The utility model mainly adopts the following technical proposals: a tire bead structure, including a bead wire ring, and the outside of the bead wire ring is wrapped with a carcass ply and a spout steel wire cloth; Going around the bottom of the bead traveler outwards and turning up to form a cord turn-up part, the bead traveler is provided with an auxiliary traveler, the cord turn-up part passes between the bead traveler and the auxiliary traveler and along the The inner side of the auxiliary traveler extends upward; the upper part of the auxiliary traveler is provided with apex rubber.

Filling rubber I is provided between the carcass ply, the ply turnup part and the bead traveler.

Filling glue II is provided between the apex rubber, the turned-up part of the cord and the steel wire wrapping cloth of the slit.

The distance between the free end of the turned-up part of the cord and the upper end of the auxiliary traveler is 5-25mm, which not only ensures that the carcass does not pull back, but also does not waste materials.

The filling type glue I adopts the rubber material with high modulus and strong permanent deformation resistance; the filling type glue II adopts the rubber material with low heat generation, strong tear resistance and strong adhesive performance.

The distance between the outer free end of the zipper wire-wrapped cloth and the upper end of the auxiliary traveler is 20-40mm.

The new bead structure of the all-steel radial tire described in the utility model improves the anti-load performance of the tire bead through the innovative design of the tire bead structure and material distribution. Compared with the existing technology, through the application of double bead ring structure and special rubber, the carcass turn-up shape is changed, the anti-deformation performance of the tire bead position is improved, and the damage to the tire bead caused by the stress concentration at the end point of the carcass turn-up is eliminated, and the tire bead is improved. Anti-carcass pullback performance.

Description of drawings

Fig. 1 is the structural representation of the utility model;

In the figure: 1. Bead bead traveler, 2. Carcass ply, 3. Spout steel wire wrapped cloth, 4. Cord turn-up part, 5. Auxiliary bead ring, 6. Apex rubber, 7. Filling type rubber I, 8. Filling glue II.

detailed description

A tire bead structure, comprising a bead wire ring 1, the outside of the bead wire ring is sequentially wrapped with a carcass ply 2 and a spout wire wrapping 3; the carcass ply 2 is bypassed from the inner side of the bead wire ring 1 to the outside The bottom of the bead traveler 1 is turned up again to form a cord turn-up part 4. The bead traveler 1 is provided with an auxiliary traveler 5, and the cord turn-up part 4 passes between the bead traveler 1 and the auxiliary traveler 5. and extend upward along the inner side of the auxiliary traveler 5; the upper part of the auxiliary traveler 5 is provided with an apex 6.

Filling rubber I7 is provided between the carcass ply 2 , the ply turnup portion 4 and the bead traveler 1 .

Filling type glue II8 is provided between the apex rubber 6 , the cord turn-up part 4 and the slit steel wire wrapping cloth 3 .

The distance H1 between the free end of the cord turn-up part 4 and the upper end of the auxiliary traveler 5 is 5-25 mm.

The distance H2 between the outer free end of the zipper wire cloth 3 and the upper end of the auxiliary traveler 5 is 20-40mm.

Claims (5)

1. a tire bead structure, comprises bead bundle (1), and bead bundle outside is enclosed with casingply (2) and rim of the mouth steel wire infantees (3) successively; Casingply (2) outwards walks around bead bundle (1) bottom upwards anti-package again from bead bundle (1) inner side, form cord anti-package part (4), it is characterized in that: described bead bundle (1) is provided with auxiliary bead coil (5), cord anti-package part (4) is between bead bundle (1) and auxiliary bead coil (5) and edge assists bead coil (5) inner side upwards to extend; Auxiliary bead coil (5) top is provided with triangle rubber (6).

2. a kind of tire bead structure according to claim 1, is characterized in that: be provided with filled-type glue I (7) between described casingply (2), cord anti-package part (4) and bead bundle (1).

3. a kind of tire bead structure according to claim 1, is characterized in that: be provided with filled-type glue II (8) between described triangle rubber (6), cord anti-package part (4) and rim of the mouth steel wire infantees (3).

4. a kind of tire bead structure according to claim 1, is characterized in that: cord anti-package part (4) free end and auxiliary bead coil (5) upper end distance are 5-25mm.

5. a kind of tire bead structure according to claim 1, is characterized in that: rim of the mouth steel wire infantees (3) outer free end and auxiliary bead coil (5) upper end distance are 20-40mm.