CN213322520U - Steel wire tyre for electric vehicle - Google Patents

Abstract

The utility model discloses a steel wire tire for electric motor car, tire are radial by outer to interior respectively by tread, anti layer, steel wire layer, curtain yarn layer, tire bead and interior surface course to constitute, curtain yarn layer includes two-layer or more than two-layer, and the tire bead is walked around and is rolled up a take the altitude at the both ends of two-layer curtain yarn at least in the curtain yarn layer, and the tread bottom sets up the anti layer of pricking of falling crescent, and the axial width on anti layer is greater than or equal to the axial width on steel wire layer, and anti layer of pricking covers the steel wire layer, anti layer of pricking and tread integrated into one piece. The utility model discloses steel wire tire for electric motor car possesses good anti thorn ability, and the travelling comfort is good simultaneously, is difficult for beating, and does not increase rolling resistance.

Description

Steel wire tyre for electric vehicle

Technical Field

The utility model relates to a technical field of tire especially indicates a steel wire tire for electric motor car.

Background

The steel wire tire is characterized in that a steel wire layer is additionally arranged between a tire tread and a tire body cord layer, the steel wire layer is high in strength and rigidity and is bound to the periphery of the tire body cord layer, and the deformation of the tire during rolling is small, so that the steel wire tire is good in controllability, strong in wear resistance, good in controllability, more oil-saving and more electricity-saving compared with a common tire, and has been widely applied to relatively large vehicles such as cars, buses and the like. In response to the market demand of electric two-wheeled vehicles (electric vehicles for short), more and more electric vehicles have used steel wire tires in recent years, but the electric vehicles have complex and various road conditions, particularly, sharp stones, glass residues, iron nails and the like are frequently encountered on rural roads, and even the steel wire tires with better anti-prick performance compared with common tires cannot avoid being pricked in danger.

As shown in fig. 1, a conventional steel wire tire structure T ' for an electric vehicle has a steel wire layer 2 ' between a tread 1 ' and a cord layer 3 ', and when sharp objects such as stones, glass slag, iron nails, etc. are encountered, the steel wire tire structure T ' is easily punctured from the tread 1 ' to an inner surface layer 4 ' inside the tire, resulting in air leakage. The analysis reason is that the steel wire layer 2' is arranged by steel wire cords according to the specified design density and angle, and after the tire is inflated and expanded and is deformed under load, the thinning and anti-pricking capacity of the steel wire cords is reduced and the steel wire cords cannot resist the pricking of sharp objects. In order to enhance the anti-pricking capability, the steel wire tires for cars and passenger cars in the market are usually changed into interwoven mesh steel wire layers or added with one layer of steel wire layers with reverse angles, but for electric vehicles, the rigidity of the mesh steel wire layers or the steel wire layers arranged in a double-layer crossed manner is too strong, so that the whole tire is too stiff and heavy, the comfort is poor, the vehicles are more power-consuming and easy to jump, and the steel wire tires are not suitable for the electric vehicles. Therefore, aiming at the problem of insufficient anti-pricking performance of the existing steel wire tire of the electric vehicle, a novel steel wire tire structure needs to be researched and developed, the anti-pricking performance is effectively enhanced on the premise of no loss of comfort, power saving and difficult jumping, and the anti-pricking performance is easy to produce and implement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide one kind not losing the travelling comfort, under the electricity saving nature and the difficult prerequisite that produces and beat, effectively strengthen anti prick performance, and the steel wire tyre for electric motor car of easy to produce implementation.

In order to achieve the above purpose, the solution of the present invention is:

the utility model provides a steel wire tire for electric motor car, the tire is radial from outer to interior to constitute by tread, anti layer of pricking, steel wire layer, curtain yarn layer, tire bead and interior surface course respectively, the curtain yarn layer includes two-layer or more than two-layer, and the tire bead is walked around and is rolled up a take the altitude at the both ends of two-layer curtain yarn at least in the curtain yarn layer, and the tread bottom sets up the anti layer of pricking of falling crescent, and the axial width on anti layer is greater than or equal to the axial width on steel wire layer, and anti layer of pricking covers the steel wire layer, and anti layer of pricking and tread integrated into one piece.

After the scheme is adopted, compared with the existing steel wire tire, the curtain yarn layer of the utility model is at least provided with two layers, so that the rigidity of the tire body is properly enhanced, the anti-prick performance is enhanced, the added curtain yarn layer does not go around the tire bead, the problems that the whole tire is too stiff and heavy and the tire is easy to produce and jump can be avoided, the good comfort is ensured, the anti-prick layer replaces partial rubber material at the bottom of the tire tread, and the anti-prick layer and the tire tread are integrally formed, so that the production and implementation are easy; the utility model discloses steel wire tire for electric motor car possesses good anti thorn ability, and the travelling comfort is good simultaneously, is difficult for beating, and does not increase rolling resistance.

Further, the steel wire layer is formed by combining a plurality of steel cords and then sizing the surface of the steel cords, and each inch of the steel wire layer contains at least 20 steel cords. Further, the anti-prick layer is made of a sizing material.

Furthermore, the radial thickness of the anti-pricking layer at the center of the tire tread is the thickest and is set to be 1-5 mm, and the anti-pricking layer extends towards the two outer sides and is gradually thinned.

Further, the cord layer comprises three layers of cords, wherein two ends of the radially outermost cords are terminated near the tire bead, the two ends of the radially outermost cords do not pass around the tire bead, and two ends of the radially inner two layers of cords pass around the tire bead and are wound to a certain height.

Drawings

Fig. 1 is a schematic cross-sectional view of a conventional steel wire tire for electric vehicles.

Fig. 2 is a schematic cross-sectional view of the tire of the present invention.

Fig. 3 is another schematic cross-sectional view of the tire of the present invention.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 2 and 3, the present invention discloses a wire tire structure for an electric vehicle, in which a vertical direction is set as a tire radial direction, a lateral direction is set as a tire axial direction, and a single-dot chain line indicates an equatorial plane. The utility model discloses tire T structure from radially by respectively to interior: the tread 1, the anti-tie layer 6, the steel wire layer 2, the cord layer 3, the bead 5, and the inner layer 4 are combined (for the sake of convenience of distinction, in fig. 2 and 3, the cord layer 3 is illustrated as being filled with mesh lines, and the anti-tie layer 6 is illustrated as being filled with solid matter). The method specifically comprises the following steps: the tyre comprises a tyre surface 1 directly contacted with the ground, two or more than two layers of cord layers 3 forming a tyre skeleton structure, a steel wire layer 2 arranged between the tyre surface 1 and the cord layers 3, an inner surface layer 4 arranged in the radial inner part of the cord layers 3, and tyre beads 5 respectively wound by two ends of the cord layers 3 and rolled up to a certain height.

Fig. 2 is the first embodiment of the tire of the present invention, wherein, the cord layer 3 contains two layers of cords, both ends of the two layers of cords all bypass the tire bead 5 and are rolled up to a certain height, the bottom of the tread 1 is provided with the anti-prick layer 6, the anti-prick layer 6 is located between the tread 1 and the steel wire layer 2, the whole is in the shape of inverted crescent, and the relative equatorial plane is symmetrically distributed at the bottom of the tread 1. The anti-pricking layer 6 in the center of the tire tread has the thickest radial thickness and is set to be 1-5 mm, meanwhile, the anti-pricking layer slowly extends towards the two outer sides, the thickness is gradually reduced, the axial width of the anti-pricking layer 6 is larger than or equal to the axial width of the steel wire layer 2, the anti-pricking layer 6 covers the steel wire layer 2, and the anti-pricking layer 6 replaces partial rubber material at the bottom of the tire tread 1 and is integrally formed with the tire tread 1, so that the production and implementation are easy; the rubber material is preferably selected to bear larger external force deformation, has better elasticity, can effectively resist the puncture of sharp objects, provides excellent puncture resistance, has good comfort and does not increase the rolling resistance. Steel wire layer 2 is formed by the surface sizing again after being arranged according to specified design density, angle by the steel cord, the utility model discloses contain at least 20 steel cord in each inch steel wire layer 2 of tire, if steel cord density is too low, inflation of tire and load warp the back, the steel cord becomes to dredge the resistance to prick ability not enough.

Fig. 3 is another embodiment of the tire of the present invention, the structure and principle of this embodiment are substantially the same as the first embodiment, the same parts are not described in detail, and the difference lies in: the ply 3 of cords in this embodiment comprises three plies of cords, wherein the radially outermost ply ends at the ends E near the beads 5, the ends not passing around the beads 5, and the radially inner plies are wrapped at the ends around the beads 5 and at a height. The three-layer cord yarn structure of so designing, current electric motor car steel wire child has increased one deck cord yarn relatively, makes the matrix rigidity appropriately strengthen, has strengthened anti prick performance, and this layer cord yarn of increase does not walk around the tire bead 5, can avoid the whole too stiff and heavy and easy production of tire to beat the scheduling problem, ensures good travelling comfort.

To sum up, the utility model discloses a steel wire tire for electric motor car radially comprises tread 1, anti layer 6, steel wire layer 2, cord layer 3, tire bead 5 and interior surface course 4 to interior from outer respectively. Two or more layers of screen 3, and at least two ends of screen in the screen 3 pass through the tyre bead 5 and are rolled up to a certain height. The bottom of the tread 1 is provided with an inverted crescent anti-prick layer 6, and the axial width of the anti-prick layer 6 is larger than or equal to that of the steel wire layer 2, so that the anti-prick layer 6 covers the steel wire layer 2. Preferably: the anti-prick layer 6 is integrally formed with the tread 1, and is preferably made of rubber material capable of bearing large external force deformation and having better elasticity, and each inch of the steel wire layer 2 contains at least 20 steel wire cords. The steel wire tire designed in this way has excellent puncture resistance, is comfortable, is not easy to jump, and does not increase rolling resistance.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.

Claims (5)

1. A steel wire tire for electric vehicles is characterized in that: the tire is composed of a tire tread, an anti-prick layer, a steel wire layer, a curtain yarn layer, a tire bead and an inner surface layer from outside to inside in the radial direction respectively, the curtain yarn layer comprises two layers or more than two layers, the tire bead is wound around at least two layers of curtain yarns in the curtain yarn layer at two ends, a certain height is wound, the anti-prick layer in an inverted crescent shape is arranged at the bottom of the tire tread, the axial width of the anti-prick layer is larger than or equal to that of the steel wire layer, the anti-prick layer covers the steel wire layer, and the anti-prick layer.

2. A steel wire tire for electric vehicles as claimed in claim 1, wherein: the steel wire layer is formed by combining a plurality of steel wire cords and then sizing the surface of the steel wire cords, and each inch of the steel wire layer contains at least 20 steel wire cords.

3. A steel wire tire for electric vehicles as claimed in claim 1, wherein: the anti-prick layer is made of a sizing material.

4. A steel wire tire for electric vehicles as claimed in claim 1, wherein: the anti-prick layer at the center of the tire tread has the thickest radial thickness which is set to be 1-5 mm, and simultaneously extends towards the two outer sides and the thickness is gradually reduced.

5. A steel wire tire for electric vehicles as claimed in claim 1, wherein: the ply of cords comprises three plies of cords, wherein the radially outermost cords terminate at ends adjacent to the beads, the ends do not pass around the beads, and the radially inner two plies of cords pass around the beads at both ends and are wound to a height.

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