WO2021248627A1

WO2021248627A1 - Snow tire

Info

Publication number: WO2021248627A1
Application number: PCT/CN2020/102448
Authority: WO
Inventors: 耿鹏; 林明正
Original assignee: 河北万达轮胎有限公司
Priority date: 2020-06-11
Filing date: 2020-07-16
Publication date: 2021-12-16
Also published as: CN212889721U

Abstract

A snow tire, comprising a carcass (1). The carcass (1) comprises a tread (11) and shoulders (12) provided on both sides of the tread (11); a plurality of pattern block groups (2) are uniformly fixed to the tread (11) along a circumferential direction of the carcass (1); each pattern block group (2) comprises a first pattern block (21) and a second pattern block (22) provided at the center of the tread and distributed circumferentially along the carcass (1); the cross-sectional size of each first pattern block (21) is greater than that of each second pattern block (22); a plurality of third pattern blocks (23) fixed to the tread (11) are symmetrically provided on two sides of each first pattern block (21); a first tire stud (231) is integrally formed on the surface of each third pattern block (23), and a plurality of second studs (232) integrally formed together with the third pattern block (23) are provided around the first tire stud (231). The snow tire has long-term use stability, and allows passing on ice and snow road surfaces.

Description

A snow tire

Technical field

The utility model relates to the technical field of tires, in particular to a snow tire.

Background technique

Snow tires are tires suitable for use in snowy weather. Metal spikes can usually be added to the tread of ordinary tires to increase the grip. People use this type of tires in colder and prone to snow, such as Russia. Its main advantage lies in improving the passability and safety of icy and snowy roads.

The existing Chinese patent application with publication number CN108715116A discloses a snow tire including a carcass. The carcass is provided with a tread for contact with the ground. The tread is provided with a number of circumferential grooves. The rubber ring is embedded, and there are a number of metal strips protruding from the surface of the rubber ring. The metal strips are arranged in parallel along the circumference of the rubber ring. The surface of the metal strip is provided with a snow groove that cuts off the length of the metal strip. The rubber ring and the tread are both Made of rubber, the elastic rigidity of the rubber ring is smaller than that of the carcass, so that the rubber ring forms a better contact with the road when it is compressed, which improves the vehicle handling stability on icy and snowy roads.

The above-mentioned prior art solutions have the following defects: the rubber ring is embedded in the circumferential groove during the driving of the snow tire. Therefore, the rubber ring is easily detached from the circumferential groove as the vehicle is driven for a long time. The reliability of the tires and the passability on icy and snowy roads cannot be guaranteed.

Utility model content

The purpose of this application is to provide a snow tire to achieve the effect of ensuring the long-term stability of the tire and the passability on icy and snowy roads.

The above-mentioned utility model objectives of this application are achieved through the following technical solutions:

A snow tire includes a carcass. The carcass includes a tread and shoulders arranged on both sides of the tread. The tread is uniformly fixed with a plurality of block groups along the circumference of the carcass, and each block group It includes a first block and a second block arranged in the center of the tread and distributed along the circumference of the carcass. The cross-sectional size of the first block is larger than the cross-sectional size of the second block, and the two sides of the first block are symmetrically arranged A plurality of third blocks fixed to the tread surface are integrally formed with first tyre studs on the surface of the third block, and a plurality of second tyre studs integrally formed with the third blocks are arranged around the first tyre stud.

By adopting the above technical solution, a plurality of block groups are evenly arranged on the tread along the circumference of the carcass, which can greatly increase the friction between the tread and the ground, so that the tire has better grip when running on the road. In addition, the cross-sectional size of the first block is larger than the size of the second block, so that the tire can adapt to different road surfaces during driving, and improve the passability. Especially when driving in a snowy environment, the first tire nail and the second tire nail can increase the contact friction between the tread and the road surface, and it is not easy to slip during driving, and a plurality of third blocks are symmetrically arranged on the first pattern On both sides of the block, the force of the tire is balanced during the travel, and the anti-skid performance and safety are further improved. In addition, the first and second tyre studs are integrally formed with the third block, so the stability and passability of the tyre can be guaranteed even when the tyre is running on icy or snowy roads or watery roads for a long time.

The application is further configured as follows: the first tire nail is in the shape of a semicircle.

By adopting the above technical solution, when the tire is running, the first stud will be squeezed and deformed in contact with the ground. Therefore, setting the first stud in a semi-spherical shape can greatly reduce the wear of the first stud and prolong the first stud. The service life of a tire nail, and the spherical first tire nail deforms in contact with the road surface, the contact area is larger, and the grip is further improved.

The application is further provided that: a plurality of the second tyre nails are evenly distributed along the same circumference with the first tyre nail as the center.

By adopting the above technical solution, when the vehicle is running, the tread of the tire is in contact with the road surface, the multiple first studs can improve the grip of the tire, and the multiple second studs are evenly distributed along the circumference with the first stud as the center. The distribution of the tires further improves the stability of the tires during driving, the vehicle is not easy to skid, and the passability is high.

The application is further provided that: the cross-sectional size of the second stud is gradually reduced in the direction away from the tread.

By adopting the above technical solution, the cross-sectional size of the second tire stud is gradually reduced in the direction away from the tread. Therefore, when driving on icy and snowy roads, the second tire stud can be inserted into the ice and snow layer of the road surface, thereby increasing the grip of the tire. Therefore, the passability of the tire on icy and snowy roads can be further improved.

The present application further provides that: the first block and the second block both include an arrow end facing in the advancing direction and an oblique groove end located at the tail of the arrow end, and the arrow end and the oblique groove end are in a matching arrow shape, And the arrow end of the first block is facing the chute end corresponding to the second block, the arrow end of the second block is facing the chute end corresponding to the first block, the first block and the second block are in the arrow The surface at the end position is chamfered to form a chamfer.

By adopting the above technical solution, the first block and the second block are arranged in the shape of arrows, and the arrow ends are facing the forward direction of the carcass. Therefore, the first block and the second block can be continuously broken during the driving process of the tire. Snow in the open road area increases the contact area between the tire and the road surface, thereby further improving the tire grip. At the same time, the arrow end can smoothly break the snow or ice in the open road area, and discharge the snow or broken ice along the slope, thereby improving the ice and snow The passability of the road surface.

The present application further provides that: the surface of the first block is provided with a drainage groove, and both ends of the drainage groove penetrate the first block.

By adopting the above technical solution, when the first block is in contact with the road surface, the accumulated water on the road surface (or snow water formed after the snow melts) can be cut off by the drainage groove, so that the first block can smoothly contact the road surface and enter the drainage channel. The water in the water tank can be drained through the drainage groove to ensure that when the tire passes over the water or snowy road, the possibility of slipping is reduced and safety is improved.

The present application is further provided as follows: the angle between the drainage groove and the center surface of the tire is an acute angle, and one end of the drainage groove is connected to the outer side surface of the first block, and the other end of the drainage groove is connected to the arrow-shaped first block. Inside.

By adopting the above technical solution, when the tire is running on the water or snow road, the water or snow can be cut off through the drainage groove, and as the tire continues to advance, the water entering the drainage groove can be removed from the first block The arrow-shaped inner side is discharged to ensure that the drainage groove continues to cut off the accumulated water and drain, so that the passability of the tire is further enhanced.

The present application further provides that: the fourth block is uniformly arranged along the tire circumferential direction at the position of the tire shoulder, and the fourth block is arranged obliquely on the side facing away from the center of the tread, and the inclination direction is: from the fourth pattern The joint between the block and the shoulders extends toward the center of the tread and extends obliquely toward the center of the tread.

By adopting the above technical solution, the arrangement of the fourth block enables the tire to further increase the contact area between the carcass and the road surface during the driving process, and the contact friction force is relatively large, especially when the tire is turning, due to the fourth pattern The block is located at the shoulder position, so the friction between the shoulder and the road surface is greatly improved when turning, especially the inclined surface of the fourth block increases the contact area between the fourth block and the road surface when turning. In summary, the cornering grip of the tire can be effectively improved.

The present application further provides that: the surface of the fourth block facing away from the tread is integrally formed with a convex block, and the side of the convex block facing away from the center of the tread is flush with the surface corresponding to the fourth block.

By adopting the above technical solution, during the turning process of the vehicle, the fourth block is in contact with the road surface, and the arrangement of the bumps further improves the contact friction force at the shoulder position with the road surface, thereby further improving the turning grip of the tire.

The present application further provides that: the surface of the convex block is provided with a plurality of water squeezing grooves at intervals, and the water squeezing groove penetrates into the fourth block after penetrating the convex block.

By adopting the above technical solution, when the tire turns on a snowy or watery road, the water squeeze groove can cut off the water film or snow, so that the contact area between the tire and the road surface is increased, and the turning grip of the tire is improved.

In summary, this application includes at least one of the following beneficial technical effects:

1. By arranging multiple sets of pattern blocks on the tread along the tire circumferential direction, the grip of the tire during driving is improved, and the passability on snow and water roads is greatly improved;

2. By arranging the first tyre nail on the surface of the third block and setting a circle of the second tyre nail around the first tyre nail, the grip of the tire is greatly improved when the tire passes through water and snowy roads;

3. By arranging the fourth block at the position of the tire shoulder, and fixing the convex block on the surface of the fourth block, the squeezing groove is opened on the convex block to improve the turning grip of the tire.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the snow tire in this embodiment;

Figure 2 is a schematic diagram of a partial structure of the snow tire in this embodiment;

Fig. 3 is a partial enlarged schematic diagram intended to emphasize the specific structure of the first tyre nail and the second tyre nail.

In the figure, 1. carcass; 11. tread; 12, shoulder; 2. pattern block group; 21, first pattern block; 211, drainage groove; 22, second pattern block; 23, third pattern block; 231. The first tyre nail; 232. The second tyre nail; 3. The fourth pattern block; 31. The bump; 32. The squeeze groove; 4. Arrow end; 5. Inclined groove end; 6. Inclined surface.

detailed description

Hereinafter, the utility model will be further described in detail with reference to the accompanying drawings.

1 and 2, a snow tire disclosed in this application includes a carcass 1. The carcass 1 includes a tread 11 and shoulders 12 disposed on both sides of the tread 11 and integrally formed with the tread 11. The tread 11 and the shoulder 12 are both arranged in an annular shape to form the entire tire. The tread 11 is provided with multiple block groups 2 along the circumferential direction of the tire. The arrangement of the multiple block groups 2 enables the tire to increase the contact area between the tire and the road surface during the driving process, thereby making the carcass 1 and The contact friction of the road surface is increased, so the grip of the tires increases during driving, which improves the passability of the tires.

As shown in FIG. 3, the block group 2 includes a first block 21, a second block 22, and a third block 23, wherein the first block 21 and the second block 22 are along the circumferential direction of the carcass 1. Are arranged at even intervals, and the first block 21 and the second block 22 are arrow-shaped, the cross-sectional size of the first block 21 is larger than the cross-sectional size of the second block 22, the first block 21 and the second block 22 The direction of the arrows is the same, both are the forward direction of the tire. The arrangement of the first block 21 and the second block 22 is mainly to increase the contact friction between the tire and the road surface, thereby greatly improving the tire's grip on the road surface.

As shown in Figure 3, the first block 21 and the second block 22 both include an arrow end 4 facing in the advancing direction and a chute end 5 located at the tail of the arrow end 4. The arrow end 4 and the chute end 5 conform to each other. The arrow end 4 of the first block 21 is facing the oblique groove end 5 of the second block 22, and the arrow end 4 of the second block 22 is facing the oblique end of the first block 21. Slot end 5. The surfaces of the first block 21 and the second block 22 at the position of the arrow end 4 are obliquely cut to form an inclined surface 6. When passing a snowy road, the inclined surface 6 can be better inserted into the snow and remove the snow from the arrow end. 4 The center is discharged on both sides of the inclined plane, thereby improving the passability of the tire on snowy roads. The inclined surface 6 gradually widens from the center of the carcass to both sides, and the included angle b of the two sides of the inclined surface 6 on the side close to the tread 11 is smaller than the included angle a of the two sides of the inclined surface 6 on the side away from the tread 11, so When the tire passes on a snow-covered road, it can speed up the discharge of snow along the slope 6 and further improve the passability of the tire on the snow-covered road.

2 and 3, the surface of the first block 21 is provided with a drainage groove 211, the depth of the drainage groove 211 is 1/5 to 1/4 of the thickness of the first block 21, and the drainage groove 211 is inclined, specifically The angle between the drainage groove 211 and the center surface of the tire is an acute angle, and one end of the drainage groove 211 is connected to the outer surface of the first block 21, and the other end of the drainage groove 211 is connected to the inner side of the oblique groove end of the first block 21 . During the tire driving process, especially on the road surface with stagnant water and melting snow, the arrangement of the drainage groove 211 can enable the first block 21 to smoothly cut off the water or snow on the road area, reducing the possibility of tire slipping, and thus The grip of the tire is further improved.

As shown in FIG. 3, there are a plurality of third blocks 23, and the plurality of third blocks 23 are respectively arranged on both sides of the first block 21 and the second block 22. Specifically, each block group In 2, two third blocks 23 are provided on both sides of the first block 21 and the second block 22. The surface of the third block 23 is fixedly provided with a first tire stud 231 and a second tire stud 232. The first tyre nail 231, the second tyre nail 232, and the third pattern block 23 are all integrally injection molded, so that the connection strength of the first tyre nail 231 and the second tyre nail 232 is improved, and the first tyre nail 231 is not easy to fall off. Fixedly arranged at the center position of the third block 23, the end of the first tyre nail 231 is semi-spherical, the second tyre nail 232 is provided in multiple, and the plurality of second tyre nails 232 are centered on the first tyre nail 231, A plurality of studs are arranged along the same circumference, and the cross-sectional size of the second stud 232 in the direction away from the tread 11 gradually becomes smaller. When the tire passes on an icy, snowy or watery road, the first tire stud 231 and the second tire stud 232 can increase the contact friction between the tire and the ground, thereby greatly improving the grip of the tire.

As shown in Figure 3, a plurality of fourth blocks 3 are fixedly arranged along the circumference of the tire at the position of the shoulder 12. The fourth block 3 and the shoulder 12 are also formed by integral injection molding. The four blocks 3 can increase the contact area with the ground, thereby improving the cornering grip of the tire.

As shown in FIG. 3, further, the side of the fourth block 3 facing away from the center of the tread 11 is arranged in an inclined shape, and the inclination direction is: from the connection between the fourth block 3 and the shoulder 12 toward the center of the tread 11 It extends obliquely towards the center of the tread 11. During the turning of the tire, the inclined position of the fourth block 3 can fully contact the road surface, increasing the ground contact area and ground friction at the shoulder 12 position to ensure the tire’s Turning stability.

As shown in Fig. 3, the fourth block 3 is fixedly provided with a convex block 31 at a position on one side surface close to the position of the tire shoulder 12. A plurality of squeezing grooves 32 are evenly spaced on the surface of the convex block 31. The opening direction of the squeezing grooves 32 is Perpendicular to the forward direction of the tire, the water squeeze groove 32 penetrates the bump 31 and extends to the inside of the fourth block 3. When the tire turns, the bump 31 can increase the ground friction at the position of the shoulder 12, and is on icy and snowy roads or water accumulation. When turning on the road, the water squeeze tank 32 can cut off water, ice and snow, reduce the risk of slipping, and improve the turning grip of the tire.

The implementation principle of this embodiment is: when the tire is driving on an icy or snowy road, the first block 21 and the second block 22 alternately contact the ground and penetrate deep into the snow or water, most of the snow or The snow can be cut and discharged by the gap between the first block 21 and the second block 22. At the same time, the third block 23 will also increase the contact area between the tire and the road surface, which greatly improves the grip of the tire. The first tire studs 231 and the second tire studs 232 on the surface of the three-block 23 can be inserted into the snow and water on the road surface to further improve the tire grip. The drainage groove 211 also further cuts off the water film of the road surface water to avoid occurrence Water skiing phenomenon improves tire grip on water and snowy roads. When the tire turns, the fourth block 3 is in contact with the road surface. The arrangement of the bumps 31 and the water squeeze groove 32 increases the contact area of the tire shoulder 12 with the road surface, and when it passes through the water or water road, the water squeeze groove 32 can cut off stagnant water, thereby improving the tire's cornering grip.

The examples of this specific implementation manner are all preferred examples of the present utility model, and do not limit the scope of protection of the present application accordingly. Therefore: all equivalent changes made in accordance with the structure, shape, and principle of the present application shall be covered Within the scope of protection of this application.

Claims

A snow tire, comprising a carcass (1), the carcass (1) including a tread (11) and shoulders (12) arranged on both sides of the tread (11), characterized in that: the tread ( 11) A number of block groups (2) are uniformly fixed along the circumferential direction of the carcass (1), and each block group (2) includes the center of the tread (11) and along the circumferential direction of the carcass (1) Distributed first block (21) and second block (22), the cross-sectional size of the first block (21) is larger than the cross-sectional size of the second block (22), on both sides of the first block (21) A plurality of third blocks (23) fixed to the tread (11) are symmetrically arranged. The surface of the third block (23) is integrally formed with first tyre nails (231), and the first tyre nails (231) are arranged around There are a plurality of second tire studs (232) integrally formed with the third block (23).
The snow tire according to claim 1, characterized in that the first tire spike (231) is semi-spherical.
The snow tire according to claim 1, wherein a plurality of the second tyre nails (232) are evenly distributed along the same circumference with the first tyre nail (231) as the center.
The snow tire according to claim 1, characterized in that the cross-sectional size of the second stud (232) gradually decreases toward the direction away from the tread (11).
The snow tire according to claim 1, wherein the first block (21) and the second block (22) each include an arrow end (4) facing the forward direction and an arrow end located at the arrow end. (4) The oblique groove end (5) of the tail, the arrow end (4) and the oblique groove end (5) are in a matching arrow shape, and the arrow end (4) of the first block (21) is directly opposite to the corresponding The oblique groove end (5) of the second block (22), the arrow end (4) of the second block (22) is facing the oblique groove end (5) of the corresponding first block (21), the first pattern The surface of the block (21) and the second block (22) at the position of the arrow end (4) is chamfered to form an inclined surface (6).
The snow tire according to claim 1, characterized in that: the surface of the first block (21) is provided with a drainage groove (211), and both ends of the drainage groove (211) penetrate the first block (21). ).
The snow tire according to claim 6, characterized in that the angle between the drainage groove (211) and the tire center surface is an acute angle, and one end of the drainage groove (211) is connected to the first block ( On the outer surface of 21), the other end of the drain groove (211) is connected to the arrow-shaped inner side of the first block (21).
A snow tire according to claim 1, characterized in that: the fourth block (3) is evenly arranged along the tire circumferential direction at the position of the shoulder (12), and the fourth block (3) is away from One side of the center of the tread (11) is arranged obliquely, and the oblique direction is: from the connection of the fourth block (3) and the shoulder (12) toward the center of the tread (11), it is toward the tread (11) It extends obliquely in the center direction.
A snow tire according to claim 8, characterized in that: the surface of the fourth block (3) facing away from the tread (11) is integrally formed with a convex block (31), the convex block (31) The side facing away from the center of the tread (11) is flush with the surface corresponding to the fourth block (3).
The snow tire according to claim 9, characterized in that: a plurality of water squeezing grooves (32) are spaced apart on the surface of the protrusion (31), and the water squeezing groove (32) penetrates the protrusion (31) and then penetrates into the first Four pattern blocks (3).