CN211416859U

CN211416859U - Novel nail-embedded snow car tire

Info

Publication number: CN211416859U
Application number: CN201921562520.6U
Authority: CN
Inventors: 李大鹏; 马新军; 卢中允; 王宝凯
Original assignee: Sailun Jinyu Group Co Ltd
Current assignee: Sailun Jinyu Group Co Ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-09-04
Anticipated expiration: 2029-09-19

Abstract

The utility model relates to a novel nail-embedded snow sedan tire, which comprises a tire body, wherein the tire body is provided with a groove extending along the circumferential direction of the tire, both sides of the groove are provided with pattern shoulder blocks distributed along the width direction of the tire, a plurality of nail holes for embedding snow nails are uniformly distributed on the pattern shoulder blocks, the nail holes from top to bottom comprise an exposed part, a connecting column and an embedded part, the diameters of the exposed part and the embedded part are larger than those of the connecting column, the whole nail holes are in an I shape, the embedded part comprises a first embedded part and a second embedded part which are respectively connected with the left side and the right side of the connecting column and incline downwards, the connecting parts at the bottoms of the first embedded part and the second embedded part are spherical bulges made of rubber, the tread rubber in the radius range of at least 15mm around the nail holes is different from the lower part in hardness, the lower half part is 60-75 shore hardness, the upper half part is 45-75 shore hardness, and the hardness of the lower half is greater than or equal to that of the upper half.

Description

Novel nail-embedded snow car tire

Technical Field

The invention relates to a studded snow car tire, in particular to a snow car tire with a specific nail hole design, and belongs to the technical field of tire production.

Background

The studded snow car tire is mainly used in countries such as Nordic Kandian peninsula, Russia, North America Canada and the like, and the using environment is mostly an extremely cold region. In these countries, where the winter is long and cold, the road is usually covered with thick snow, making driving in winter extremely difficult and unsafe, and a snow tire with studded structure is required to improve the grip and traction of the vehicle on the icy and snowy road.

Different from the snow car tire with non-embedded nails, the snow car tire with embedded nails has more flexibility in function because the nail holes which can be embedded with the snow nails are distributed on the tread pattern. After the snow nails are embedded, the tire has stronger ground gripping force and can adapt to the more serious snow ice road surface, so that the snow nails are firmly embedded in the nail holes, and the snow nail embedded tire is very important for the snow car tire.

The existing snow car tire with embedded nails has relatively poor ice and snow performance due to higher hardness of tread rubber, but the hard tread rubber can reduce the creep of the snow nails in the nail holes, so that the snow nails are not easy to fall out of the nail holes. Along with the increasingly high performance requirements of users on the studded snow sedan tires, in order to increase the tread grounding area of the studded snow sedan tires and improve the traction and braking performance of the studded snow sedan tires, the rubber hardness of the tread is designed to be lower and lower, so that the creep degree of the snow nails in the nail holes is increased, the early-stage nail-removing risk is improved, and the tires without the snow nails can cause the vehicles to slip and swing to the tail, so that traffic accidents occur.

Disclosure of Invention

The invention provides a novel studded snow car tire, aiming at the problem that the current studded snow car tire cannot be balanced between traction performance, braking performance and nail-off risk.

The technical scheme for solving the technical problems is as follows:

a novel nail-embedded snow sedan tire comprises a tire body, wherein a groove extending along the circumferential direction of the tire is formed in the tire body, pattern shoulder blocks distributed along the width direction of the tire are arranged on two sides of the groove, a plurality of nail holes used for embedding snow nails are uniformly distributed in the pattern shoulder blocks, each nail hole comprises an exposed part, a connecting column and an embedded part from top to bottom, the diameters of the exposed part and the embedded parts are larger than those of the connecting column, the whole nail hole is I-shaped, each embedded part comprises a first embedded part and a second embedded part which are respectively connected with the left side and the right side of the connecting column and incline downwards, and the connecting parts at the bottoms of the first embedded parts and the second embedded parts are spherical bulges made of rubber; the hardness of the upper portion and the lower portion of the tread rubber within the radius range of at least 15mm around the nail holes is different, the hardness of the lower portion is 60-75 Shore hardness, the hardness of the upper portion is 45-75 Shore hardness, and the hardness of the lower portion is larger than or equal to that of the upper portion.

On the basis of the technical scheme, the invention can be further improved as follows.

Further, the height of the lower half part of the tread rubber around the nail holes is 30-60% of the overall height of the nail holes.

Furthermore, the radius r of the spherical bulge is 1-3 mm, and the height d is 0.1-1 mm.

Further, the included angle alpha between the first embedding part and the horizontal plane and the included angle alpha between the second embedding part and the horizontal plane are 10-60 degrees.

Furthermore, the volume compression rate of the snow nail to rubber around the nail hole is controlled to be 30-50%.

Further, the height H of the nail hole is 8-15 mm, the diameter phi a of the embedded part is 3-8 mm, the height H is 0.5-3 mm, the diameter phi b of the connecting column is 1.8-3 mm, and the diameter phi c of the exposed part is 4-6 mm.

The invention has the beneficial effects that:

(1) the nail hole embedding part and the connecting column are designed to be inclined, so that the joint of a conventional general nail embedding base and the nail column can be strongly extruded, the embedding part and the spherical bulge at the bottom form a downward-bent reverse spherical surface, the reverse spherical surface can downwards extrude the conventional general nail embedding plane base or the upward-bent base, and meanwhile, the creep degree of the snow nail in the nail hole can be obviously reduced by matching with high-hardness tread rubber at the lower part of the nail hole, so that the possibility of early falling of the snow nail can be greatly reduced, and the nail hole embedding part is suitable for all the conventional general snow nail styles;

(2) due to the design of the spherical bulges at the bottoms of the nail holes, when the snow nails are in contact with the road surface, the spherical bulges can generate outward elasticity on the snow nail base, so that the snow nails can penetrate through the ice and snow road surface, and the grip performance of the tire is improved;

(3) the structure of the nail hole and the spherical bulge are matched with proper tread rubber hardness distribution, so that the creeping of the snow nail in the nail hole is reduced, the snow nail can penetrate through ice and snow road surfaces, and the tire grip force is improved.

Drawings

FIG. 1 is a schematic view of the location of the nail holes;

FIG. 2 is a cross-sectional view of a nail hole and upper and lower half rubber hardness profiles;

FIG. 3 is a graphical representation of nail hole size;

FIG. 4 is a schematic view of the snow nail and the side wall of the nail hole in a compressed state;

FIG. 5 shows an ice braking test of two different studded snow car tires;

FIG. 6 shows an ice acceleration test of two different studded snow car tires;

FIG. 7 shows ice handling tests of two different studded snow car tires;

in fig. 5-7, strip 1 is a studded tire of race wheel ICE blanmer WST3 type, and strip 2 is a studded tire according to the present invention.

In fig. 1 to 4, 1 is a groove; 2. pattern shoulder blocks; 3. nailing holes; 4. an exposed portion; 5. connecting columns; 6. an embedding part; 6-1, a first embedding part; 6-2, a second embedding part; 6-3, spherical bulges; 7. and (3) tread rubber.

Detailed Description

The principles and features of this invention are described below in conjunction with examples, which are set forth to illustrate, but are not to be construed to limit the scope of the invention.

As shown in figures 1 to 4, the novel studded snow car tire comprises a tire body, wherein a groove 1 extending along the circumferential direction of the tire is arranged on the tire body, pattern shoulder blocks 2 distributed along the width direction of the tire are arranged on two sides of the groove, a plurality of nail holes 3 used for studded snow nails are uniformly distributed on the pattern shoulder blocks, each nail hole comprises an exposed part 4, a connecting column 5 and an embedded part 6 from top to bottom, the diameters of the exposed part and the embedded parts are larger than those of the connecting column, the whole nail hole is I-shaped, each embedded part comprises a first embedded part 6-1 and a second embedded part 6-2 which are respectively connected with the left side and the right side of the connecting column and incline downwards, the included angle alpha between each first embedded part and the horizontal plane is 10-60 degrees, the connecting part of the bottoms of the first embedded parts and the second embedded parts is a spherical bulge 6-3 made of rubber, and the height H of each nail hole is 8-15 mm, the diameter phi a of the embedded part is 3-8 mm, the height h is 0.5-3 mm, the diameter phi b of the connecting column is 1.8-3 mm, the diameter phi c of the exposed part is 4-6 mm, the radius r of the spherical bulge is 1-3 mm, the height d is 0.1-1 mm, the hardness of the upper part and the lower part of the tread rubber in the radius range of at least 15mm around the nail hole is different, as shown in figure 2, the hardness of the lower half part is 60-75 Shore hardness, the hardness of the upper half part is 45-75 Shore hardness, the hardness of the preferred lower half part is larger than that of the upper half part, and the height of the lower half part is 30-60% of the overall height of the nail hole; the snow nail is TSA 8.0-10.0/2M2 snow nail manufactured by SITEK company, and is mounted and embedded in the nail hole.

The tires of ICE blamer wst3 type with studded nails were used as comparison (bar 1 in fig. 5 to 7), and the tires of the present invention with studded nails were used as examples (bar 2 in fig. 5 to 7), and the braking performance, acceleration performance and handling performance on ICE were measured, respectively, and the results are shown in fig. 5 to 7.

From the results in fig. 5-7, it can be seen that compared with the studded snow tire in the prior art, the studded snow tire obtained by the invention has the advantages that the ice braking performance is improved by 36%, the ice acceleration performance is improved by 79%, the ice control performance is improved by 12%, the nail removal risk is greatly reduced, and a good technical effect is achieved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A novel nail-embedded snow sedan tire comprises a tire body, wherein a groove extending along the circumferential direction of the tire is formed in the tire body, pattern shoulder blocks distributed along the width direction of the tire are arranged on two sides of the groove, a plurality of nail holes used for embedding snow nails are uniformly distributed in the pattern shoulder blocks, and the novel nail-embedded snow sedan tire is characterized in that the nail holes comprise an exposed part, a connecting column and an embedded part from top to bottom, the diameters of the exposed part and the embedded part are larger than those of the connecting column, the whole nail hole is I-shaped, the embedded part comprises a first embedded part and a second embedded part which are respectively connected with the left side and the right side of the connecting column and incline downwards, and the connecting parts at the bottoms of the first embedded part and the second embedded part are spherical bulges made of rubber; the hardness of the upper portion and the lower portion of the tread rubber within the radius range of at least 15mm around the nail holes is different, the hardness of the lower portion is 60-75 Shore hardness, the hardness of the upper portion is 45-75 Shore hardness, and the hardness of the lower portion is larger than or equal to that of the upper portion.

2. The novel studded snow sedan tire as claimed in claim 1, wherein the height of the lower half part of the tread rubber around the nail hole is 30-60% of the overall height of the nail hole.

3. A novel studded snow sedan tire as claimed in claim 1 or 2, wherein the radius r of the spherical bulge is 1-3 mm, and the height d is 0.1-1 mm.

4. The novel studded snow sedan tire as claimed in claim 1 or 2, wherein the included angle α between the first and second embedded portions and the horizontal plane is 10-60 °.

5. The novel studded snow sedan tire as claimed in claim 3, wherein the included angle α between the first and second embedded portions and the horizontal plane is 10-60 °.

6. The novel studded snow sedan tire as claimed in claim 3, wherein the volume compression ratio of the snow nails to rubber around the nail holes is controlled to be 30-50%.

7. The novel studded snow sedan tire as claimed in claim 4, wherein the volume compression ratio of the snow nails to rubber around the nail holes is controlled to be 30-50%.

8. A novel studded snow sedan tire as claimed in claim 1 or 2, wherein the height H of the nail hole is 8-15 mm, the diameter φ a of the studded part is 3-8 mm, the height H is 0.5-3 mm, the diameter φ b of the connecting column is 1.8-3 mm, and the diameter φ c of the exposed part is 4-6 mm.

9. A novel studded snow sedan tire as claimed in claim 3, wherein the height H of the nail hole is 8-15 mm, the diameter φ a of the studded part is 3-8 mm, the height H is 0.5-3 mm, the diameter φ b of the connecting column is 1.8-3 mm, and the diameter φ c of the exposed part is 4-6 mm.

10. The novel studded snow car tire as claimed in claim 4, wherein the height H of the nail hole is 8-15 mm, the diameter φ a of the studded part is 3-8 mm, the height H is 0.5-3 mm, the diameter φ b of the connecting column is 1.8-3 mm, and the diameter φ c of the exposed part is 4-6 mm.