Tire with enhanced conductive properties in the sidewall

Abstract

The utility model discloses a kind of tire of reinforcing side wall electric conductivity, belong to automobile tire technical field, including tread, side wall, ply and conductive adhesive strip, tread includes by upper to lower sequentially arranged tread rubber layer, crown band layer, belt layer and air-tight layer, side wall includes side wall rubber area and rim rubber area, ply is arranged between belt layer and air-tight layer, ply is extended to inside side wall from tread, conductive adhesive strip is arranged in the inside of side wall.Solve the problem that vehicle static electricity accumulation caused by the electric conductivity of side wall area is insufficient in prior art, electronic equipment is susceptible to interference.The utility model can export static electricity efficiently, overall improve the driving safety of vehicle and user experience, and the position and size of conductive adhesive strip can be flexibly adjusted according to different product specifications, with wide applicability.

Description

Technical Field

[0001] This utility model relates to the field of automotive tire technology, specifically to a tire with enhanced sidewall conductivity. Background Technology

[0002] Radial tires are a modern tire design, named for the parallel arrangement of the tire's carcass plies along its radial direction, resembling the meridians of the Earth. Their structure primarily consists of the tread, sidewall, belt layers, plies, and airtight layers. They offer advantages such as a large contact patch, excellent grip, low rolling resistance, and long service life, making them widely used in various types of automobiles. The radial tire's carcass structure allows for better stress distribution during driving, improving comfort and stability, and is currently the mainstream design for passenger and commercial vehicle tires.

[0003] However, with the increasing number of electronic devices in automobiles and the growing demand for low rolling resistance performance in tires, the conductivity of tires has gradually become a key factor affecting vehicle safety and user experience. Currently, tires typically release static electricity through conductive strips in the tread and conductive yarns incorporated into the ply layers. However, in the sidewall area, especially where the rim rubber contacts the wheel rim, there is often a lack of dedicated conductive paths. Particularly in low rolling resistance tires, materials such as silica are often added to the sidewall compound to reduce rolling resistance, further weakening the conductivity of the sidewall. This prevents static electricity from being effectively discharged through the wheel rim, leading to its accumulation on the vehicle body, posing a risk of electric shock, interfering with onboard electronic equipment, and even causing safety hazards in flammable environments.

[0004] Therefore, how to provide a tire with enhanced sidewall conductivity and overcome the shortcomings of existing technologies is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] Therefore, this utility model provides a tire with enhanced sidewall conductivity to solve the problem in the prior art where insufficient conductivity in the sidewall area leads to static electricity accumulation in vehicles and susceptibility to interference with electronic devices.

[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model discloses a tire with enhanced sidewall electrical conductivity, comprising: The tread comprises, from top to bottom, the tread rubber layer, the crown layer, the belt layer, and the airtight layer; The sidewall includes the sidewall rubber area and the rim rubber area; A ply is disposed between the belt layer and the airtight layer, the ply extending from the tread into the sidewall; Conductive rubber strips are disposed inside the tire sidewall.

[0007] Furthermore, the conductive adhesive strip is disposed inside the flange adhesive area, one end of the conductive adhesive strip extends to the outer wall surface of the flange adhesive area, and the other end of the conductive adhesive strip is in contact with the fabric layer.

[0008] Furthermore, a rim protection line is provided on the outer sidewall of the tire sidewall, a steel wire ring is provided inside the tire sidewall, and the conductive rubber strip is located above the steel wire ring and below the rim protection line.

[0009] Furthermore, the distance between the conductive adhesive strip and the edge of the wheel rim adhesive is 30-45mm.

[0010] Furthermore, the width of the conductive adhesive strip is 2-4 mm.

[0011] Furthermore, the conductive adhesive strip is made of rubber with a large amount of carbon black added.

[0012] This utility model has the following advantages: This invention utilizes conductive adhesive strips to efficiently discharge static electricity, reducing the risk of electric shock caused by static electricity accumulation on the vehicle body and minimizing signal interference from static electricity to onboard electronic devices. It is particularly suitable for new energy vehicles with more electronic devices, thus improving overall vehicle driving safety and user experience.

[0013] By adjusting the position and size of the conductive rubber strip, this application can be flexibly adapted to various tire specifications, thus having wide applicability. Attached Figure Description

[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0016] Figure 1 A cross-sectional view of a tire with enhanced sidewall conductivity provided by this utility model; Figure 2 Provided by this utility model Figure 1 Enlarged view of the A-structure; Figure 3 This is a diagram showing the sidewall shape of the tire in its semi-finished state, as provided by this utility model.

[0017] In the diagram: 1. Tread; 11. Tread rubber layer; 12. Crown layer; 13. Belt layer; 14. Airtight layer; 15. Cord layer; 2. Sidewall; 21. Sidewall rubber area; 22. Rim rubber area; 23. Rim protection line; 24. Steel wire ring; 3. Conductive rubber strip. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Please refer to Figures 1-3 The present invention discloses a tire with enhanced sidewall conductivity. The present invention consists of four parts, as follows: Figure 1 As shown, the tire includes a tread 1, a sidewall 2, a ply 15, and a conductive rubber strip 3. The tread 1 includes a tread rubber layer 11, a crown belt layer 12, a belt layer 13, and an airtight layer 14 arranged sequentially from top to bottom. The sidewall 2 includes a sidewall rubber area 21 and a rim rubber area 22. The ply 15 is disposed between the belt layer 13 and the airtight layer 14 and extends from the tread 1 into the sidewall 2. The conductive rubber strip 3 is disposed inside the sidewall 2.

[0020] In this embodiment, the conductive rubber strip 3 is arranged inside the tire along the circumference of the sidewall 2. At any rotation angle, the tire can maintain stable electrical contact with the rim through this strip, providing continuous and uniform electrostatic discharge capability. The conductive rubber strip 3 has a simple structure and can be directly and simultaneously completed in the existing sidewall 2 extrusion process, without the need for complex equipment or major process changes, resulting in low production costs. During extrusion, care should be taken to ensure that the upper and lower ends of the conductive rubber strip 3 are exposed to avoid insufficient rubber content causing the conductive rubber strip 3 to be wrapped by the rim rubber, thus reducing conductivity. After the sidewall 2 is extruded, the molding and subsequent processes are the same as before.

[0021] In response to the widely used low rolling resistance tires with enhanced sidewall insulation due to the addition of silica, this application provides a targeted technical solution. Without changing the main formulation of the low rolling resistance rubber compound or affecting the tire's rolling resistance performance, it effectively compensates for the conductivity loss caused by the use of silica by adding local conductive structures, thus overcoming the technical challenge of achieving both low rolling resistance and high conductivity.

[0022] By setting conductive adhesive strip 3, static electricity can be efficiently discharged, reducing the risk of electric shock caused by static electricity accumulation on the vehicle body and reducing signal interference of static electricity to vehicle electronic devices. This is especially suitable for new energy vehicles with more electronic devices, and improves the overall driving safety and user experience of the vehicle.

[0023] Preferably, the conductive rubber strip 3 is made of rubber with a large amount of carbon black added. The material of the conductive rubber strip 3 is the same as that of the existing conductive strip of the tread 1, both being made of ordinary rubber with a large amount of carbon black added. The ordinary rubber can be any common type of rubber, such as silicone rubber, natural rubber, nitrile rubber, EPDM rubber, etc. The choice of which rubber to use as the base material depends on the requirements of the final product for temperature resistance, elasticity, and cost.

[0024] Preferably, the width of the conductive rubber strip 3 is 2-4 mm. The width of the conductive rubber strip 3 can be adjusted adaptively according to different tire sizes and different rim styles.

[0025] like Figure 2 As shown, the conductive rubber strip 3 is disposed inside the flange rubber area 22, one end of the conductive rubber strip 3 extends to the outer wall surface of the flange rubber area 22, and the other end of the conductive rubber strip 3 is in contact with the fabric layer 15.

[0026] In this embodiment, by setting a conductive strip 3 inside the rim rubber area 22 of the sidewall 2, with one end contacting the rim and the other end connected to the ply 15, the conductive path from the rim, sidewall 2, ply 15 to the tread 1 is successfully connected, forming a complete low-resistance charge release channel. This effectively solves the problem of insufficient conductivity in the "rim-sidewall 2" section of existing tires, reduces the overall resistance of the tire, and ensures that static electricity can be quickly and reliably conducted to the ground.

[0027] like Figure 2 As shown, a rim protection line 23 is provided on the outer sidewall of the tire sidewall 2, and a steel wire ring 24 is provided inside the tire sidewall 2. The conductive rubber strip 3 is positioned above the steel wire ring 24 and below the rim protection line 23. It should be noted that the position of the conductive rubber strip 3 should be confirmed by cutting the cross-section after the tire is manufactured. Due to different tire specifications, the position of the conductive rubber strip 3 may need to be adjusted. During adjustment, ensure that the conductive rubber strip 3 is above the steel wire ring 24 and below the rim protection line 23.

[0028] Figure 3 This is a shape diagram of the tire sidewall 2 in the semi-finished tire state. Preferably, the distance between the conductive rubber strip 3 and the edge of the rim rubber is 30-45mm. By adjusting the position and size of the conductive rubber strip 3, this invention can be flexibly adapted to various tire specifications and has wide applicability.

[0029] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A tire having enhanced electrical conductivity of the sidewall, characterized in that, include: The tread (1) includes a tread rubber layer (11), a crown layer (12), a belt layer (13) and an airtight layer (14) arranged sequentially from top to bottom. The sidewall (2) includes the sidewall rubber area (21) and the rim rubber area (22); A ply (15) is disposed between the belt layer (13) and the airtight layer (14), the ply (15) extending from the tread (1) into the sidewall (2); Conductive adhesive strip (3) is disposed inside the tire sidewall (2).

2. The tire of claim 1, wherein the tire is a tire having a sidewall that is reinforced with a cord, and the cord is coated with the conductive composition. The conductive rubber strip (3) is disposed inside the rim rubber area (22), one end of the conductive rubber strip (3) extends to the outer wall surface of the rim rubber area (22), and the other end of the conductive rubber strip (3) is in contact with the fabric layer (15).

3. The tire of claim 2, wherein the conductive properties of the tire sidewall are enhanced by the inclusion of a conductive material in the sidewall. A rim protection line (23) is provided on the outer sidewall of the tire sidewall (2), and a steel wire ring (24) is provided inside the tire sidewall (2). The conductive rubber strip (3) is located above the steel wire ring (24) and below the rim protection line (23).

4. The tire of claim 2, wherein the conductive properties of the tire sidewall are enhanced by the inclusion of a conductive material in the sidewall. The distance between the conductive adhesive strip (3) and the edge of the wheel rim adhesive is 30-45mm.

5. The tire of claim 1, wherein the tire is a tire having a sidewall that is reinforced to enhance the electrical conductivity of the sidewall. The width of the conductive adhesive strip (3) is 2-4 mm.

6. The tire of claim 1, wherein the tire is a tire having a sidewall that is reinforced to enhance the electrical conductivity of the sidewall. The conductive strip (3) is made of rubber with a large amount of carbon black added.

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