Tire structure of single-layer tire body composite seam allowance reinforcing rubber sheet

Abstract

The utility model provides a tire structure of a single-layer tire body composite seam allowance reinforcing rubber sheet, which solves the technical problems that the requirements on material distribution of the existing tire are that the braking and controllability are good, the rolling resistance is low, the comfort is good, the durability is good, the comprehensive performance of the tire is good, and the cost performance is high. The method can be widely applied to the tire design field. The tire specifically comprises a tire crown part and a tire side part, the innermost layer at the bottom of the tire side part is a tire bead, the tire bead is reversely wrapped with a longitudinally extending cord fabric layer, and the tire bead is composed of a steel wire ring located at the bottom of the cord fabric layer, reinforcing rubber attached to the inner side wall of the cord fabric layer and apex used for filling a reverse wrapping space; a lining layer is attached outwards from one side of the bottom of the cord fabric layer, and seam allowance glue is attached from the inner side of the lining layer to the outer side of the cord fabric layer; a tread, a cap ply, a bridle layer, a cord fabric layer and a lining layer are respectively laid on the section of the tire crown part from top to bottom.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tire design technical field, especially relate to a kind of single layer carcass composite subport reinforcing rubber sheet's tire structure. BACKGROUND

[0002] New energy automobile is the trend of development of automobile industry. The characteristics are heavy weight, large torque, fast start acceleration. The requirements of consumers to car are: braking, good steering stability, low energy consumption, quiet and comfortable. Corresponding, the requirements of material distribution on tire are good braking and steering, low rolling resistance (lightweight), good comfort, durable, in general, tire comprehensive performance is good, cost-effective, this point is relatively difficult to achieve. CONTENT OF UTILITY MODEL

[0003] The utility model aims at solving the technical insufficiency, provide a kind of single layer carcass composite subport reinforcing rubber sheet's tire structure.

[0004] Therefore, the utility model provides a kind of single layer carcass composite subport reinforcing rubber sheet's tire structure, including crown and side part, the innermost layer of the bottom of side part is bead, the longitudinal extension of cord layer is wrapped outside bead, and bead is composed of steel wire ring located at the bottom of cord layer and triangular rubber for filling wrapping space, and reinforcing rubber is attached on the inner wall of cord layer;From the bottom side of cord layer, inner liner is attached outward, and subport rubber is attached from the inner side of inner liner to the outer side of cord layer.

[0005] Wherein, the distance between the top edge of steel wire ring and the upper end point of triangular rubber is 15%-20% of tire section height, and the hardness of triangular rubber is 90;The length between the two end points of reinforcing rubber is 30%-35% of tire section height, and the hardness is 80-85;The distance between the upper end point of subport rubber and the upper end point of reinforcing rubber is 10-15mm.

[0006] Wherein, the distance between the top edge of steel wire ring and the upper end point of triangular rubber is 25%-30% of tire section height, and the hardness of triangular rubber is 90;Reinforcing rubber is separate rubber sheet, and the thickness is 1mm, and the hardness is 75, and is attached on cord layer, and the length between two ends is (25%-30%)+10mm of tire section height;The distance between the upper end point of subport rubber and the upper end of reinforcing rubber is 10mm.

[0007] Further, the cross section of crown is laid with tread, crown belt layer, belt layer, cord layer and inner liner from top to bottom respectively.

[0008] Further, in shoulder part, additional crown belt layer is wound along the circumference of tread, and the winding width of additional crown belt layer is 30mm.

[0009] Further, the material of belt layer is 3x0.28ST.

[0010] Furthermore, the carcass type is double-layered 1000D / 2.

[0011] This utility model provides a tire structure with a single-layer carcass composite bead reinforcement film, which has the following beneficial effects:

[0012] The bead section, from bottom to top, employs a material distribution structure of a single-layer carcass + small triangular rubber + reinforcing rubber + large bead rubber, enhancing handling stability, durability, and comfort. To achieve the goal of lightweighting, the use of a single-layer carcass in the 2000D / 2 reduces the product weight by approximately 600g compared to a double-layer carcass, while maintaining material strength. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of the first embodiment of this utility model;

[0014] Figure 2 This is a structural diagram of the tire sidewall of the first embodiment of this utility model;

[0015] Figure 3 This is a structural diagram of the tire sidewall of the second embodiment of this utility model;

[0016] The markings in the diagram are: 1. Tire crown; 2. Tire sidewall; 3. Tire belt layer; 4. Tire sidewall rubber; 5. Reinforcing rubber; 6. Bead rubber; 7. Bead wire; 8. Triangle rubber; 9. Tire tread; 10. Crown belt layer; 11. Cord layer; 12. Inner liner layer; 13. Parting line. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0018] In all implementations, tire specifications of 275 / 35ZR18 are used. For example... Figure 1 As shown, this utility model provides a tire structure with a single-layer carcass and composite bead reinforcement film. The carcass uses a double-layer 1000D / 2 type, including a crown portion 1 and a sidewall portion 2. Taking the longitudinal section of the tire when it is upright as a reference, the crown portion 1 is laid flat from top to bottom with a tread 9, a crown belt layer 10, a belt layer 3, a ply layer 11, and an inner liner layer 12. Among them, in the shoulder portion, an additional crown belt layer 10 is wound around the circumference of the tread, and the winding width of the additional crown belt layer 10 is 30 mm; the belt layer 3 is made of 3×0.28ST material, and the thickness of the inner liner layer 12 is 1.5 mm.

[0019] The innermost layer of the bottom of the sidewall part 2 is the bead, the outside of the bead is wrapped with a longitudinally extending ply 11, the bead is composed of a steel wire ring 7 at the bottom of the ply 11 and a triangular rubber 8 for filling the wrapping space, and a reinforcing rubber 5 is attached to the inner left sidewall of the ply 11. An inner liner 12 is attached outward from the bottom side of the ply 11, and a bead filler 6 is attached from the inner side of the inner liner 12 to the outer side of the ply 11. The outer side of the bead filler 6 is attached with a sidewall rubber 4, and the parting line 13 between the sidewall rubber 4 and the bead filler 6 is vertical.

[0020] As shown in the drawings, Figure 2 In an embodiment, the distance H between the top edge of the steel wire ring 7 and the upper end point of the triangular rubber 8 is 15%-20% of the height of the tire section, and the hardness of the triangular rubber 8 is 90; the length D between the two end points of the reinforcing rubber 5 is 30%-35% of the height of the tire section, and the hardness is 80-85; the distance L between the upper end point of the bead filler 6 and the upper end point of the reinforcing rubber 5 is 10-15 mm.

[0021] It should be noted that if the height of the triangular rubber is designed too low, it is easy to cause slow response of the vehicle when turning, and obvious low-frequency vibration when passing through some obstacles (such as speed bumps); and if the height of the triangular rubber is designed too high, it is easy to cause large vertical stiffness, strong impact feeling, low smoothness, and poor bead durability. In the present embodiment, the material distribution structure of single-layer carcass + small triangular rubber + reinforcing rubber + large bead filler from bottom to top at the bead part improves the handling stability, durability, and comfort.

[0022] And the conventional use of double-layer 1000D / 2 type carcass causes large weight, energy consumption, and low cost performance; in order to achieve the goal of light weight, the use of single-layer carcass 2000D / 2 reduces the product weight by about 600g compared with double-layer carcass, while ensuring the strength of the material.

[0023] As shown in the drawings, Figure 3 In an embodiment, the distance H between the top edge of the steel wire ring 7 and the upper end point of the triangular rubber 8 is 25%-30% of the height of the tire section, and the hardness of the triangular rubber 8 is 90; the reinforcing rubber 5 is a separate rubber sheet with a thickness of 1 mm and a hardness of 75, attached to the ply 11, and the length D between the two ends is (25%-30%) of the height of the tire section + 10 mm; the distance L between the upper end point of the bead filler 6 and the reinforcing rubber 5 is 10 mm.

[0024] In the present embodiment, the optimized reinforcing rubber is a reinforcing rubber sheet, which plays a role in balancing the rigidity of the bead, and also increases the adhesion between the carcass and the triangular rubber, avoiding the failure caused by delamination of the carcass.

[0025] In the description of the utility model, need understanding is, the term "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "intermediate" etc. Indicated orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicated or implied that the indicated device or element must have a specific orientation, a specific orientation structure and operation, therefore it cannot be understood as a limitation on the utility model.

[0026] The above is only a specific embodiment of the utility model, and cannot limit the scope of the utility model, so the replacement of equivalent components or equivalent changes and modifications made within the scope of the utility model patent protection should still belong to the scope covered by the utility model claims.

Claims

1. A tire structure of a single-ply carcass composite sub-tread reinforcing sheet, comprising a crown portion and a side portion, the innermost layer of the bottom of the side portion being a bead, the outside of the bead being wrapped with a longitudinally extending ply, characterized in that, The bead is composed of a steel wire ring at the bottom of the ply and a triangular rubber for filling the turn-up space, and the reinforcing rubber is attached to the inner side wall of the ply; the inner liner is attached to the bottom side of the ply outwardly, and the bead filler is attached to the inner side of the inner liner outwardly.

2. The single-ply tire structure of claim 1, wherein, The distance between the top edge of the steel wire ring and the upper end point of the triangular rubber is 15%-20% of the height of the tire section, and the hardness of the triangular rubber is 90; the length between the two end points of the reinforcing rubber is 30%-35% of the height of the tire section, and the hardness is 80-85; the distance between the upper end point of the bead filler and the upper end point of the reinforcing rubber is 10-15 mm.

3. The single-ply, belt composite sub-tread reinforced tire structure of claim 1, wherein, The distance between the top edge of the steel wire ring and the upper end point of the triangular rubber is 25%-30% of the height of the tire section, and the hardness of the triangular rubber is 90; the reinforcing rubber is a separate rubber sheet with a thickness of 1 mm and a hardness of 75, which is attached to the ply, and the length between the two ends is (25%-30%)+10 mm of the height of the tire section; the distance between the upper end point of the bead filler and the upper end of the reinforcing rubber is 10 mm.

4. Tyre structure of the single-ply carcass composite sub- mouth reinforcing patch according to any one of claims 1-3, characterized in that, The cross section of the crown portion is laid with the tire tread, the crown ply, the belt ply, the ply and the inner liner from top to bottom.

5. The single-ply, belt composite sub-oral reinforced tire structure of claim 4, wherein, In the shoulder portion, an additional crown ply is wound along the circumference of the tire tread, and the winding width of the additional crown ply is 30 mm.

6. The single-ply tire structure of claim 4, wherein, The material of the belt ply is 3×0.28ST.

7. The single-ply tire structure of claim 4, wherein, The type of the carcass is double-layer 1000D / 2.

Images