CN212796415U

CN212796415U - Electric two-wheel vehicle tire

Info

Publication number: CN212796415U
Application number: CN202021244130.7U
Authority: CN
Inventors: 严永知
Original assignee: Cheng Shin Rubber Xiamen Ind Ltd
Current assignee: Cheng Shin Rubber Xiamen Ind Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-03-26
Anticipated expiration: 2030-06-30

Abstract

The utility model discloses an electric two-wheeled vehicle tire, the center of the tire tread of the tire is provided with a center pattern block with a continuous smooth surface, the tire tread adopts low rolling resistance glue, and two sides of the center line of the tire tread are provided with a shallow trench, a main trench, a large pattern block and a small pattern block which are symmetrical but staggered; the shallow trench has certain distance from the tread center line in the axial direction, the width of the main trench gradually presents an increasing trend from the inner side to the outer side, the axial length of the main trench does not cross the tread center line, the shallow trench and the main trench are respectively provided with a drainage slope at the sharp corner close to the tread, the bottom of the drainage slope is an arc, the two drainage slopes form a slope after the arc, and the slope is transited to the trench bottom with certain depth. Through designing the tread decorative pattern to the tire, make the utility model discloses can be applicable to good road conditions in sunny day and the easy smooth road conditions in rainy day simultaneously.

Description

Electric two-wheel vehicle tire

Technical Field

The utility model relates to a pneumatic tire's technical field especially indicates a decorative pattern structural design of electric two-wheeled vehicle tire tread.

Background

The demand of the electric two-wheeled vehicle in the existing market is continuously increased, and along with the continuous increase of the number of the electric vehicles, the single performance can not meet the use requirement, and the demand of people on the performance of the tire is also increased. At present, the existing electric vehicle tire is only basically suitable for good road conditions on fine days, and as shown in fig. 1, the existing common electric vehicle tire has a tread pattern: the tread is provided with continuous smooth central pattern blocks 10' so that the rolling resistance is low, but the tread is easy to sideslip and fall down in rainy days and on the road surface with accumulated water, and certain potential safety hazards exist. And the special antiskid tire for rainy season, as shown in figure 2, the pattern blocks of the tire tread are provided with shallow groove groups 20 ', the pattern blocks at two axial sides of the central pattern block 10 ' are provided with shallow grooves and diamond pattern coarsening 1A ', the friction force between the tire and the ground is increased, the rolling resistance of the tire is large, and the antiskid effect is achieved. However, this increases the rolling resistance, reduces the riding comfort, and further affects the cruising ability of the tire. The existing market lacks an electric two-wheeled vehicle capable of adapting to the two road conditions simultaneously.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough and provide an electric two-wheeled vehicle tire that can be suitable for good road conditions in sunny days and the easy smooth road conditions in rainy day simultaneously.

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

a kind of electric two-wheeled vehicle tire, its tire tread center has center pattern block of the smooth surface of continuity, the tread uses the low rolling resistance sizing material, both sides of central line of tread have symmetrical but staggered arrangement shallow ditch, main ditch, large pattern block and small pattern block; the shallow ditch is "the type of falling V", and shallow ditch axial has certain distance apart from tread central line, the ditch width of main ditch presents the trend of increasing from inboard to the outside gradually, and main ditch axial length does not cross tread central line, and shallow ditch and main ditch are provided with the drainage slope respectively in the closed angle department near the tread, and drainage slope bottom is the circular arc, and two rows of water slopes form the slope behind the circular arc, and the slope passes through to the ditch bottom of certain degree of depth.

After the structure is adopted, the central pattern block on the smooth surface of the tread center continuity of the electric two-wheeled vehicle tire can increase the contact area of the tire on a normal road surface without accumulated water in a sunny day, the operation stability and riding comfort are better, the tread adopts low rolling resistance rubber, the rolling resistance is greatly reduced, and the endurance schedule is increased while more electricity is saved; the shallow trenches on the two sides of the center of the tire tread are inverted V-shaped, the shape design of the opening is favorable for breaking a water film and improving the ground gripping force when the tire tread runs in rainy days, the shallow trenches are axially spaced from the center line of the tire tread by a certain distance, the center of the tire tread is ensured to have a larger contact area with the ground, and the tire tread has good linear stability; the width of the main grooves on the left side and the right side gradually increases from the inner side to the outer side, the axial length of the main grooves does not exceed the center line of the tread, and the normal road surface without water accumulation in sunny days has excellent performance in order to ensure the contact area between the center of the tread and the ground. Shallow trench and main ditch are provided with the drainage slope at its closed angle department near the tread, and drainage slope bottom is the circular arc, and the slope of two rows of water slopes behind the circular arc slowly passes through to certain degree of depth, the cooperation design of shallow trench and main ditch for the tire possesses excellent drainage and gets rid of water performance when driving in the rainy day. Through right the utility model discloses electric two-wheeled vehicle tire's tread decorative pattern designs, makes the utility model discloses can be applicable to fine good road conditions and the easy smooth road conditions in rainy day simultaneously.

Furthermore, the large pattern blocks are provided with parallel shallow trenches, so that the drainage effect is achieved, and the anti-skid performance is improved. Furthermore, the width of the axial distance from the central line of the tire tread of the inverted V-shaped shallow trench is 10% -30% of the half width of the tire tread, so that the large contact area between the center of the tire tread and the bottom surface is ensured, and the tire tread has good linear stability. The opening angle of the inverted V-shaped shallow trench is set to be 20-40 degrees, an excessively small opening angle does not play a role in draining water and breaking a water film, and even water accumulation is likely to occur, while an excessively large opening angle plays a role in draining water but loses the capability of breaking the water film.

Furthermore, the main groove is in a lightning shape, the axial width of the main groove is 65% -90% of the half width of the tread, and the main groove has excellent performance on a normal road surface without accumulated water in sunny days in order to ensure the contact area between the center of the tread and the bottom surface.

Further, the angle formed by the main groove and the tire circumferential direction is set to be 20-45 degrees, abnormal abrasion can occur when the tire is bent excessively at an excessively large angle, the performance of the tire can be influenced, and the drainage performance of the tire cannot be guaranteed when the angle is excessively small.

Furthermore, the included angles between the drainage slopes of the shallow trench and the main trench and the radial direction of the tire are respectively set to be 20-45 degrees, the bottom of each drainage slope is an arc, the R angle is set to be R0.5-R2, and the depth of the shallow trench is set to be 30-50% of the depth of the main trench.

Furthermore, a plurality of longitudinal concave-convex grooves are arranged on the large patterns in parallel at intervals, a plurality of transverse concave-convex grooves are arranged on the small pattern blocks in parallel at intervals, the axial length of the longitudinal concave-convex grooves is set to be 60% -85% of the half width of the tread, a larger contact area is guaranteed to be arranged at the center of the tread, rolling resistance is reduced, and the axial length of the transverse concave-convex grooves is set to be 30% -50% of the half width of the tread.

Further, the depth of the longitudinal concave-convex groove is set to be 30% -50% of the depth of the main groove, the depth of the transverse concave-convex groove is set to be 25% -40% of the depth of the main groove, and the depth of the longitudinal concave-convex groove is always larger than that of the transverse concave-convex groove, so that the stability of the tire when the tire runs on a road surface in a curved state in rainy days can be ensured for a long time.

Further, the groove depths of the longitudinal concave-convex grooves and the transverse concave-convex grooves are staggered at intervals, the deeper depth of the longitudinal concave-convex grooves is set to be 40% -60% of the depth of the main groove, the deeper depth of the transverse concave-convex grooves is set to be 30% -50% of the depth of the main groove, the rigidity of the tire can be guaranteed by the shallower groove depth, and the anti-skid performance of the tire can be continuously guaranteed by the deeper groove depth.

Furthermore, still be provided with the escape canal on the little line piece, the escape canal is "M word" shape, ensures the local drainage performance of tire, further promotes the antiskid effect of tire.

Drawings

FIG. 1 is a schematic view of a conventional electric motorcycle tire;

FIG. 2 is a schematic view of a surface pattern of a conventional wet electric motorcycle;

FIG. 3 is a schematic view of a tread pattern of an embodiment of the tire of the present invention;

FIG. 4 is an enlarged view of a portion of the shallow trench isolation of FIG. 3;

FIG. 5 is a sectional view taken along line A-A' of FIG. 3;

FIG. 6 is a sectional view taken along line B-B' in FIG. 3;

FIG. 7 is a schematic view of a tread pattern of another embodiment of the tire of the present invention;

FIG. 8 is a cross-sectional view taken at C-C' of FIG. 7;

FIG. 9 is a cross-sectional view taken along line D-D' of FIG. 7;

FIG. 10 is another representation of the cross-sectional view C-C' of FIG. 7;

FIG. 11 is another representation of the cross-sectional view D-D' of FIG. 7.

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.

As shown in fig. 3 to 11, the present invention discloses an electric two-wheeled vehicle tire. In fig. 3, the vertical direction is set to the tire circumferential direction, the lateral direction is set to the tire axial direction, CL denotes a tread center line, an axially inner side is close to the tread center line, and an axially outer side is far from the tread center line, and in fig. 8, the vertical direction is set to the tire radial direction.

As shown in figure 3, the utility model relates to a tread center of electric two wheeler tire is equipped with decorative pattern piece 10 of continuity plain noodles, make the tire contact area increase on the normal road surface of no ponding in sunny day, the stability of controlling and the travelling comfort of riding are better, the tread sizing material adopts special low rolling resistance formula, its sizing material viscoelasticity Tan delta (60 ℃) numerical value is below 0.12, low rolling resistance formula sizing material viscoelasticity rolling resistance performance improves 30% ~ 50% than current ordinary formula, reduce rolling resistance by a wide margin, increase the continuation of the journey mileage when more the power saving. The outermost side of the tread center axial direction is provided with a large pattern block 30 and a small pattern block 20, and the large pattern block 30 is provided with a parallel shallow trench 31, so that the drainage effect is achieved, and the anti-skid performance is improved. As shown in fig. 4, the tread center line CL is distributed with "inverted V" shaped shallow trenches 21 on both sides, which is beneficial to breaking water films and improving grip force when driving on a road surface in rainy days, the opening angle α of the "inverted V" shaped shallow trenches 21 is set to be 20-40 ° optimal, an excessively small opening angle does not play a role in draining water and breaking water films, and even water accumulation is likely to occur, while an excessively large opening angle plays a role in draining water but loses the ability of breaking water films. The width W4 of the 'inverted V' -shaped shallow trench 21 from the axial direction to the center line CL of the tread is set to be 10% -30% of the half width W of the tread, so that the large contact area between the center of the tread and the ground is ensured, and the tread has good linear stability. The tire tread is characterized in that the two axial sides of the center of the tire tread are provided with the continuous extending main grooves 22 which are similar to lightning and have the trend of increasing the groove width S from the inner side to the outer side in the axial direction, the axial width W1 of the main grooves 22 is 65-90% of the half width W of the tire tread and cannot cross the center line CL of the tire tread, and the purpose of ensuring the contact area between the center of the tire tread and the ground is also achieved, and the normal road surface without water accumulation has excellent performance in fine days. The angle formed by the main groove 22 and the tire circumferential direction is lambda, the angle lambda is set to be 20-45 degrees best, abnormal abrasion can occur when the tire is bent excessively at an excessively large angle, the performance of the tire can be affected, and the drainage performance of the tire cannot be guaranteed when the angle is excessively small. As shown in fig. 5 and 6, the shallow trench 21 and the main trench 22 are provided with

drainage slopes

21A, 22A (shown by solid filling in the drawing) at their sharp corners near the tread, respectively. The included angles between the

drainage slopes

21A and 22A and the radial direction of the tire are respectively beta and gamma, the angles are set to be 20-45 degrees, the bottoms of the

drainage slopes

21A and 22A are arcs RA and RB, and the R angle is set to be R0.5-R3.5. Wherein the water discharge slope 21A is slowly transited to the trench bottom 21B after the circular arc RA, the water discharge slope 22A is slowly transited to the trench bottom 22B after the circular arc RB, and the trench depth H1 of the shallow trench is set to be 30% -50% of the trench depth H of the main trench 22. The matching design of the shallow trench 21 and the main trench 22 makes the tire possess excellent drainage and water throwing performance when running in rainy days.

Fig. 7 shows another embodiment of the tread pattern of the tire of the present invention: the structure and principle of the present embodiment are substantially the same as those of the first embodiment, and the same points are not described in detail, except that: in order to further increase the stability during the bending in rainy days and prevent slipping, longitudinal concave-convex grooves 30 'and transverse concave-convex grooves 20' which are densely and parallelly arranged at intervals are arranged on the large pattern block 30 and the small pattern block 20. The axial length W2 of the longitudinal concave-convex groove 30 'is set to be 60% -85% of the half width W of the tread, the central position of the tread is ensured to have larger contact area, the rolling resistance is reduced, and the axial length W3 of the transverse concave-convex groove 20' is set to be 30% -50% of the half width W of the tread. As shown in fig. 8 and 9, the depth H2 of the longitudinal concave-convex groove 30 'is set to be 30% to 50% of the groove depth H of the main groove 22, the depth H3 of the transverse concave-convex groove 20' is set to be 25% to 40% of the groove depth H of the main groove 22, and the depth H2 of the longitudinal concave-convex groove 30 'is always larger than the depth H3 of the transverse concave-convex groove 20', so that the stability of the tire can be ensured when the tire runs over a curve on a rainy road surface for a long time. Fig. 10 and 11 show another embodiment of the longitudinal 30 'and transverse 20' asperities, where the groove depth is varied to a staggered pattern of shallow and deep spaces. The deeper depth H2 'of the longitudinal concave-convex groove 30' is set to be 40% -60% of the groove depth H of the main groove 22, and the deeper depth H3 'of the transverse concave-convex groove 20' is set to be 30% -50% of the groove depth H of the main groove 22. The shallow groove depths H2, H3 can ensure the rigidity of the tire, and the deep groove depths H2 ', H3' can continuously ensure the tire anti-skid performance. The small pattern block 20 is also provided with a drainage ditch 23, the drainage ditch 23 is similar to an M shape, the local drainage performance of the tire is ensured, and the anti-skid effect of the tire is further improved.

To sum up, the utility model discloses electric two wheeler tire sets up the central decorative pattern piece 10 of continuity plain noodles at the tread center, and along the crisscross distribution in tire central line CL both sides have shallow ditch 21, main ditch 22, big decorative pattern piece 30, little decorative pattern piece 20. The center of the tread is provided with the center pattern block 10 with a continuous smooth surface, so that the contact area of the tire on a normal road surface without water accumulation in sunny days is increased, and the operation stability and riding comfort are better. The tread rubber material adopts a special low rolling resistance formula, so that the rolling resistance is greatly reduced, more electricity is saved, and the endurance mileage can be increased. The shallow trenches 21 on two sides of the central line CL of the tire tread are in an inverted V shape, the opening angle of the shallow trenches is set to be 20-40 degrees optimal, and the opening shape is beneficial to breaking a water film when the tire tread is driven in rainy days and improving the ground gripping force. The width of the shallow trench 21 from the axial direction to the central line CL of the tread is set to be 10% -30% of the half width of the tread, so that the large contact area between the center of the tread and the ground is ensured, and the tread has good linear stability. The width of the left and right main grooves 22 gradually increases from the inside toward the outside, and the axial length thereof does not exceed the tread center line CL, and also, in order to ensure the contact area between the tread center and the ground, the normal road surface without water accumulation has excellent performance in a fine day. The angle formed by the main groove 22 and the tire circumferential direction is λ, and the optimum angle is 20 ° to 45 °. The shallow trench 21 and the main trench 22 are provided with

drainage slopes

21A and 22A at the sharp corners close to the tire surface, the included angles between the drainage slopes 21A and 22A and the radial direction of the tire are beta and gamma, and the bottoms of the drainage slopes 21A and 22A are circular arcs. The two rows of

water slopes

21A and 22A are slowly transited to the groove bottom with a certain depth after being in an arc shape, and the matching design of the shallow groove 21 and the main groove 22 ensures that the tire has excellent drainage and water throwing performance when running in rainy days. The large pattern block 30 and the small pattern block 20 are provided with dense and parallel spaced longitudinal concave-convex grooves 30 'and transverse concave-convex grooves 20', and the depth of the longitudinal concave-convex grooves 30 'is always larger than that of the transverse concave-convex grooves 20', so that the stability of the tire in the case of driving on a road surface passing a curve in rainy days can be ensured for a long time. The depths of the longitudinal concave-convex grooves 30 'and the transverse concave-convex grooves 20' can also be in a structure form of interval, stagger and one deep and one shallow, the shallow depth ensures the rigidity of the tire, and the deep depth ensures the long-time anti-skid performance of the tire. The small pattern blocks 30 are also provided with drainage ditches 23, so that the local drainage performance of the tire is ensured, and the anti-skid effect of the tire is further improved. The longitudinal concave-convex grooves 30 'and the transverse concave-convex grooves 20' are matched with the design of the shallow trenches and the main trenches, so that the anti-skidding performance is achieved, and the drainage performance is also considered.

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

1. The electric two-wheeled vehicle tire is characterized in that the center of the tire tread of the tire is provided with a center pattern block with a continuous smooth surface, the tire tread adopts low rolling resistance glue, and two sides of the center line of the tire tread are provided with a shallow trench, a main trench, a large pattern block and a small pattern block which are symmetrically and alternately arranged; the shallow trench has certain distance apart from the tread central line in the axial direction, the trench width of main ditch presents the trend of increasing from inboard to outside gradually, and main ditch axial length does not cross the tread central line, and shallow trench and main ditch are provided with the drainage slope respectively in the closed angle department of being close to the tread, and drainage slope top is the circular arc, and two rows of water slopes form the slope behind the circular arc, and the slope passes through to the ditch bottom of certain degree of depth.

2. An electric two-wheeled vehicle tyre as claimed in claim 1, wherein: the shallow trench is of an inverted V shape, the axial width of the shallow trench from the center line of the tread is 10% -30% of the half width of the tread, and the opening angle of the inverted V-shaped shallow trench is 20-40 degrees.

3. An electric two-wheeled vehicle tyre as claimed in claim 1, wherein: the large pattern blocks are provided with parallel shallow trenches.

4. An electric two-wheeled vehicle tyre as claimed in claim 1, wherein: the main groove is in a lightning shape, and the axial width of the main groove is 65-90% of the half width of the tread.

5. An electric two-wheeled vehicle tyre as claimed in claim 1, wherein: the angle formed by the main groove and the tire circumferential direction is set to be 20-45 degrees.

6. An electric two-wheeled vehicle tyre as claimed in claim 1, wherein: the included angles between the drainage slopes of the shallow trench and the main trench and the radial direction of the tire are respectively set to be 20-45 degrees, the bottom of each drainage slope is arc, the R angle is set to be R0.5-R2, and the depth of the shallow trench is set to be 30-50% of the depth of the main trench.

7. An electric two-wheeled vehicle tyre as claimed in claim 1, wherein: the large patterns are provided with a plurality of longitudinal concave-convex grooves at intervals in parallel, the small pattern blocks are provided with a plurality of transverse concave-convex grooves at intervals in parallel, the axial length of the longitudinal concave-convex grooves is set to be 60% -85% of the half width of the tread at the maximum, and the axial length of the transverse concave-convex grooves is set to be 30% -50% of the half width of the tread at the maximum.

8. An electric two-wheeled vehicle tyre as claimed in claim 7, wherein: the depth of the longitudinal concave-convex groove is set to be 30% -50% of the depth of the main groove, the depth of the transverse concave-convex groove is set to be 25% -40% of the depth of the main groove, and the depth of the longitudinal concave-convex groove is always larger than that of the transverse concave-convex groove.

9. An electric two-wheeled vehicle tyre as claimed in claim 7, wherein: the groove depths of the longitudinal concave-convex grooves and the transverse concave-convex grooves are staggered at intervals, the deeper depth of the longitudinal concave-convex grooves is set to be 40% -60% of the depth of the main groove, and the deeper depth of the transverse concave-convex grooves is set to be 30% -50% of the depth of the main groove.

10. An electric two-wheeled vehicle tyre as claimed in claim 7, wherein: the small pattern block is provided with a drainage ditch which is in an M shape.