CN212529202U

CN212529202U - Electric automobile tire with low rolling resistance noise

Info

Publication number: CN212529202U
Application number: CN202020441829.6U
Authority: CN
Inventors: 王�锋; 鲁言宏; 李健军; 王晓明; 杨盛; 陈雪梅; 孙仕娟; 李梅; 陈东; 朱丽艳
Original assignee: Shandong Linglong Tyre Co Ltd
Current assignee: Shandong Linglong Tyre Co Ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2021-02-12
Anticipated expiration: 2030-03-31

Abstract

The utility model discloses a low rolling resistance noise electric automobile tire, which comprises a tire body and a tire crown reinforcing part, wherein the tire body forms a tire main body, and the tire body surface layer comprises a main tire surface layer, an auxiliary tire surface layer and a bottom tire surface layer; two beads in contact with the mounting rim for securing the tire to the rim; the tire comprises two tire shoulders, wherein the tire shoulders extend outwards from the tire bead to the tire crown in the radial direction, and when the tire shoulders are arranged in each circumferential pitch, a multi-level variable-pitch arrangement mode is adopted, and the arrangement mode comprises two middle pattern block parts II and a tire shoulder part I positioned between the two middle pattern block parts II; the tread is divided into a plurality of pattern blocks by the longitudinal grooves and the transverse grooves, and a plurality of narrow grooves are distributed on the circumferential surface of each pattern block and used for breaking a water film and improving the grip of the tire.

Description

Electric automobile tire with low rolling resistance noise

Technical Field

The utility model relates to a tire equipment technical field specifically is a low electric automobile tire who rolls resistance to noise.

Background

Generally, a tire comprises: a tread cap comprising a tread rubber layer and a tread cap reinforcement. The crown reinforcement is covered by steel wires and nylon fibers along the circumferential direction of the tire; two sidewalls extending radially outward from the bead to a crown; two beads intended to come into contact with a mounting rim for fixing the tyre to the rim; at least one carcass reinforcement is anchored to each bead, usually by winding around a reinforcing structure of a circumferential steel wire.

With the increasing exhaustion of petroleum energy, the automobile industry is more and more developing towards the aspect of new energy electric automobiles. The limitation of the battery technology of the electric automobile often cannot provide higher endurance mileage. In order to ensure the high mileage of a vehicle, the tire which is the only tire of the whole vehicle and is in contact with the ground needs to have the performance requirement of low rolling resistance, and the electric vehicle instantly reaches the maximum torque when being started, so that the used tire needs higher ground holding force, but the performance of the existing tire cannot meet the requirement.

In view of the above problems, a low rolling resistance noise electric vehicle tire is now provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low electric automobile tire who rolls resistance to solve the problem that proposes among the above-mentioned background art.

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

a low rolling resistance noise electric vehicle tyre comprises a tyre body and a tyre crown reinforcing member, wherein the tyre body comprises a main tyre surface layer, a secondary tyre surface layer and a bottom tyre surface layer;

two beads in contact with the mounting rim for securing the tire to the rim;

the tire shoulder extends outwards from the tire bead to the tire crown in the radial direction, and when the tire shoulders are distributed at each pitch in the circumferential direction, a multi-level variable-pitch arrangement mode is adopted, wherein the arrangement mode comprises two middle pattern block parts II and a tire shoulder part I positioned between the two middle pattern block parts II;

the tire tread is circumferentially covered by a rubber layer stretching across the whole axial width of the crown reinforcement and is composed of multiple layers of composite rubber materials in the radial direction, tread patterns are arranged on the tire tread and are composed of a plurality of longitudinal grooves and a plurality of transverse grooves, the tire tread is cut into a plurality of pattern blocks by the longitudinal grooves and the transverse grooves, and a plurality of narrow grooves used for breaking water films to enhance the grip force of the tire are distributed on the circumferential surface of each pattern block.

As a further aspect of the present invention: the radial depth of the groove is not more than 1 mm.

As a further aspect of the present invention: the main tread layer is made of a first rubber compound having tan delta of not less than 1.0 at 0 ℃ and has a radial thickness setting in the range of 0.1mm to 15 mm.

As a further aspect of the present invention: the sub-tread layer is made of a second rubber compound having tan delta of not more than 0.1 at 60 ℃, and its radial thickness setting value is in the range of 0.1mm to 15 mm.

As a further aspect of the present invention: the bottom tread layer is made of a third rubber compound of extremely strong viscosity, with a set value of radial thickness in the range of 0.1mm to 15 mm.

As a further aspect of the present invention: the tire shoulder part I adopts an arrangement mode that the total pitch number is not less than sixty and the pitch type is not less than three, and the middle pattern block part II adopts an arrangement mode that the total pitch number is not less than forty and the pitch type is not less than three.

As a further aspect of the present invention: the total number of the tire shoulder parts I is sixty-four pitches, the types of the pitches are four, the total number of the pitches of the middle pattern block parts II is forty-five, and the types of the pitches are three.

Compared with the prior art, the beneficial effects of the utility model are that: when the tire tread is distributed at each pitch in the circumferential direction, the utility model adopts a multi-level variable pitch arrangement mode, and realizes the low noise characteristic of the tire through simulation optimization analysis; the tread is divided into a plurality of pattern blocks by the longitudinal grooves and the transverse grooves, and a plurality of narrow grooves are distributed on the circumferential surface of each pattern block and used for breaking a water film and improving the grip of the tire.

Drawings

Fig. 1 is a front view of a tire for electric vehicles according to a preferred embodiment of the present invention;

FIG. 2 is an enlarged top plan view of the block shown in FIG. 1;

FIG. 3 is a schematic view of the narrow groove of FIG. 2 during vehicle operation;

FIG. 4 is a radial cross-sectional view of a multi-level tread;

fig. 5 is a pitch arrangement explanatory diagram.

Wherein: carcass 10, main tread layer 11, one secondary tread layer 12, one bottom tread layer 13, blocks 20, longitudinal grooves 31, lateral grooves 32, grooves 40.

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.

Example 1

Referring to fig. 1-4, in an embodiment of the present invention, an electric vehicle tire with low rolling resistance noise includes a carcass 10 and a crown reinforcement forming a tire main body, wherein a surface layer of the carcass 10 includes a main tread layer 11, an auxiliary tread layer 12 and a bottom tread layer 13; the main tread layer 11 is made of a first rubber compound having tan δ of not less than 1.0 at 0 ℃ and a radial thickness set in the range of 0.1mm to 15mm, the sub-tread layer 12 is made of a second rubber compound having tan δ of not more than 0.1 at 60 ℃ and a radial thickness set in the range of 0.1mm to 15mm, and the bottom tread layer 13 is made of a third rubber compound having a very high viscosity for preventing the sub-tread layer from being separated from the crown reinforcement and a radial thickness set in the range of 0.1mm to 15 mm;

it should be noted that: "tan δ" is a dynamic property well known to those skilled in the art to characterize a size formulation;

two beads in contact with the mounting rim for securing the tire to the rim;

the tire comprises two tire shoulders, wherein the tire shoulders extend outwards from the tire bead to the tire crown in the radial direction, when the tire shoulders are arranged at each pitch in the circumferential direction, a multi-level variable-pitch arrangement mode is adopted, the arrangement mode comprises two middle pattern block parts II and a tire shoulder part I positioned between the two middle pattern block parts, the tire shoulder part I adopts an arrangement mode that the total pitch number is not less than sixty and the pitch type is not less than three, and the middle pattern block parts II adopt an arrangement mode that the total pitch number is not less than forty and the pitch type is not less than three, so that the noise of the tire can be;

the tread, the tread is crossed the rubber layer that the whole axial width of crown reinforcement extends and covered circumferentially, and radially by the compound rubber compound of the multilayer, there are tread patterns on the tread, the said tread pattern is formed by a plurality of longitudinal grooves 31 and a plurality of horizontal grooves 32, longitudinal grooves 31 and horizontal grooves 32 cut the tire tread into a plurality of pattern blocks 20, distribute a plurality of narrow grooves 40 used for destroying the water film in order to strengthen the grip of the tire on the circumferential surface of pattern block 20, each groove 40 radial depth is not greater than 1mm, as shown in figure 3, when the vehicle is running on the wet road surface, the said narrow groove 40 can destroy the water film fully in the preferred embodiment, thus strengthen the grip of the tire, keep the vehicle safe in running.

Adopt the 205/55R16 specification product of the utility model pattern style, the Pass By Noise performance of its test is 65dB, reaches the 1 grade of EU label, 3dB lower than general product. The rolling resistance coefficient test result is 6.5, reaches A grade of European Union labels, is reduced by 20 percent compared with common products, and the wet skid test result is 1.53.

Example 2

The difference from example 1 is: the total number of the tire shoulder parts I is sixty-four pitches, the types of the pitches are four, the total number of the pitches of the middle pattern block parts II is forty-five, and the types of the pitches are three.

The utility model discloses a theory of operation is: by providing a tread pattern consisting of a plurality of longitudinal grooves 31 and a plurality of transverse grooves 32; the tire tread is cut into a plurality of pattern blocks 20 by the longitudinal grooves 31 and the transverse grooves 32, a plurality of thin and narrow grooves 40 are distributed on the circumferential surface of each pattern block 20, and the narrow grooves 40 can fully damage a water film, so that the ground gripping force of the tire is enhanced, the running safety of a vehicle is kept, and the noise of the tire can be effectively reduced by adopting a multi-level variable pitch arrangement mode.

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

1. A low rolling resistance noise motor vehicle tyre, characterized by comprising a carcass (10) and a crown reinforcement forming the main body of the tyre, the surface layer of the carcass (10) comprising a main tread layer (11), a secondary tread layer (12) and a bottom tread layer (13);

two beads in contact with the mounting rim for securing the tire to the rim;

the tread, the tread is crossed the rubber layer that the whole axial width of crown reinforcement extends and covers circumferentially, and radially by the compound sizing composition of multilayer, be equipped with the tread pattern on the tread, the tread pattern comprises a plurality of longitudinal grooves (31) and a plurality of horizontal grooves (32), and longitudinal grooves (31) and horizontal grooves (32) cut into a plurality of decorative pattern blocks (20) with the tire tread, distribute many thin narrow grooves (40) that are used for destroying the water film in order to strengthen the grip of tire on the block (20) circumferential surface.

2. The low rolling noise electric vehicle tire according to claim 1, wherein the radial depth of the grooves (40) is not greater than 1 mm.

3. The low rolling resistance noise electric vehicle tire according to claim 1, wherein the main tread layer (11) is made of a first rubber compound having tan δ not less than 1.0 at 0 ℃, and its radial thickness setting is in the range of 0.1mm to 15 mm.

4. The low rolling resistance noise electric vehicle tire according to claim 1, wherein the secondary tread layer (12) is made of a second rubber compound having tan δ of not more than 0.1 at 60 ℃, and its radial thickness setting is in the range of 0.1mm to 15 mm.

5. Motor vehicle tyre with low rolling resistance noise according to claim 1, characterized in that the bottom tread layer (13) is made of a third rubber compound with very high viscosity, with a radial thickness setting in the range of 0.1mm to 15 mm.

6. The electric vehicle tire with low rolling resistance noise according to claim 1, wherein the tire shoulder portion I adopts an arrangement mode that the total pitch number is not less than sixty and the pitch type is not less than three, and the middle pattern block portion II adopts an arrangement mode that the total pitch number is not less than forty and the pitch type is not less than three.

7. The low rolling resistance noise electric vehicle tire according to claim 1, wherein the total number of the tire shoulder portion i is sixty-four pitches, the pitch types are four, and the total pitch number of the middle block portion ii is forty-five, and the pitch types are three.