Nail-inlaid winter all-terrain tire

Abstract

The utility model discloses a nail-inlaid winter all-terrain tire, and relates to the technical field of tires. According to the technical scheme, a plurality of nail holes for embedding snow nails are formed in a tire tread, and the nail holes are arranged in a double-row Z shape; in the direction from the tread to the interior of the tire, each nail hole comprises an exposed part, a connecting part and an inlaying part, the exposed parts and the connecting parts are cylinders, the inlaying parts are gourd-shaped, and the diameter of the exposed parts and the diameter of the widest positions of the inlaying parts are both larger than the diameter of the connecting parts. According to the nail-embedded snow tire, the nail holes are arranged in a double-row Z shape, and the embedding parts at the bottoms of the nail holes are designed in a gourd shape, so that the tire obtains uniform road holding force on an ice and snow pavement, the risk of early nail falling of the tire can be effectively reduced, and the performance of the nail-embedded snow tire is improved.

Description

Technical Field

[0001] This utility model relates to the field of tire technology, specifically to a studded winter all-terrain tire. Background Technology

[0002] Studded snow tires are mainly used in cold regions near the Arctic Circle. Although the types of tires required vary from region to region—for example, passenger car tires, compact SUV tires, and light truck C tires are the main types used in Northern Europe and Russia, while mid-to-large SUV tires and high-passenger-range light truck tires are the main types used in North America—they all share a common characteristic: long and cold winters. Roads are covered with snow year-round, forming a snow crust that, after being compacted by vehicles, forms a solid ice surface, making driving extremely difficult. Using ordinary unstudded snow tires poses certain safety risks. Therefore, studded snow tires are favored by users because they can improve the grip and traction of vehicles on icy and snowy roads.

[0003] As the name suggests, studded snow tires have a certain number of stud holes distributed regularly on the tread blocks. Using a special tool, studs are embedded in the rubber stud holes of the tire. The top of the stud is higher than the tread surface. In the case of heavy snow and ice, the protruding studs are more likely to grip the ground and ensure driving safety.

[0004] The performance of studded snow tires depends on two aspects:

[0005] I. Spike Removal Rate During Tire Use. As mentioned above, snow tires have studs installed in the tread rubber surrounding the stud holes after the tire has been vulcanized. Therefore, ensuring that studs do not fall out during use is crucial for studded snow tires. The stud removal rate depends on two factors: the hardness of the rubber compound and the shape of the stud holes. Higher rubber compound hardness can effectively reduce the movement of studs in the stud holes, lowering the risk of early stud removal. However, increasing tread hardness comes at the cost of reduced tread performance on ice and snow. All-terrain tires operate in more complex environments than regular road tires, and maintaining the tread rubber's traction on roads, especially unpaved surfaces, is just as important as stud placement. Reducing tread rubber hardness to improve snow grip is unavoidable. Therefore, maintaining a low stud removal rate with relatively low tread hardness is a pressing issue that can be addressed by improving the shape of the tread stud holes.

[0006] II. The rationality of stud distribution on the tire tread. Different tire tread patterns have different stud distributions due to their different functions. Therefore, the arrangement of stud holes on the tire tread can be improved to enhance the performance of studded snow tires. Utility Model Content

[0007] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a studded winter all-terrain tire with a double-row Z-shaped stud hole design and a gourd-shaped stud part at the bottom of the stud hole. This design allows the tire to obtain uniform grip on icy and snowy roads, while also effectively reducing the risk of early stud detachment and improving the performance of the studded snow tire.

[0008] The technical solution of this utility model is as follows:

[0009] The studded winter all-terrain tire has several nail holes on its tread for inserting snow studs, and the nail holes are arranged in a double-row Z-shape. From the tread to the inside of the tire, the nail hole includes an exposed part, a connecting part, and an inserting part. The exposed part and the connecting part are cylindrical, and the inserting part is gourd-shaped. The diameter of the exposed part and the diameter of the widest part of the inserting part are both larger than the diameter of the connecting part.

[0010] Preferably, the tire tread has five rows of intersecting tread blocks arranged laterally, with the tread blocks arranged along the circumference of the tire. The two rows of tread blocks on the inner side of the tire and the two rows of tread blocks on the outer side are alternately provided with nail holes, thereby forming a row of Z-shaped nail holes on the inner and outer sides of the tire.

[0011] Preferably, in the two rows of tread holes, the lateral distance between two adjacent tread holes located on different columns is L1, and the circumferential distance between two adjacent tread holes located on the same column is L2, where L1:L2 = (0.3-0.7):1. Considering the balance between braking grip and lateral handling grip, a slightly higher degree of lateral handling grip is beneficial for agile driving on icy and snowy roads, especially unpaved roads. This is consistent with the design of all-terrain tires where the shoulder tread blocks are more rigid than the middle tread blocks.

[0012] Preferably, L1:L2 = (0.4-0.6):1.

[0013] Preferably, along the circumferential direction, the inlay portion includes a recessed first inlay portion, a raised second inlay portion, and a recessed third inlay portion in the radial direction from top to bottom, wherein the included angle between the two sides of the third inlay portion at the recess is 50-90°.

[0014] Preferably, the radial height H of the nail hole is 8-15 mm, and the height L of the inlay part is 3-6 mm.

[0015] Preferably, the radial height of the first inlay part is 3 / 4L, the diameter of the first inlay part at the recess is 3-5mm, the included angle between the two sides of the recess is 100-140°, and the radius of the arc at the recess is 1-3mm.

[0016] Preferably, the radial height of the second inlay is 1 / 2L, the diameter of the second inlay at the protrusion is 2-4mm, and the radius of the protrusion is 1-2mm.

[0017] Preferably, the radial height of the third inlay part is 2 / 5L, the diameter of the third inlay part at the recess is 4-6mm, and the radius of the arc at the recess is 1-3mm.

[0018] Preferably, the diameter of the connecting part is 1.8-3mm, and the diameter of the exposed part is 4-6mm.

[0019] Compared with the prior art, this utility model has the following advantages:

[0020] 1. The stud holes on the tire tread of this utility model adopt a double-row Z-shaped arrangement design to ensure that the studs are evenly distributed in the lateral and circumferential directions of the tread pattern, so that the tire can obtain uniform grip on icy and snowy roads. At the same time, the inlay part at the bottom of the stud hole adopts a gourd-shaped design, which can effectively reduce the risk of early stud detachment from the tire and improve the performance of studded snow tires.

[0021] 2. During tire use, reduced creep in the area around the stud base decreases the stud removal rate. With existing stud hole designs, the stud base should be positioned on the upper surface (e.g.,...) Figure 7 As shown at point B), the volume compression rate of the surrounding rubber is controlled at 35-50%. The nail hole design of this invention, through the upper plane of the bottom of the snow nail (e.g., Figure 6 As shown at point B, a raised second inlay is provided, increasing the compression ratio of the nearby rubber material to 40-65%, effectively increasing the lateral compression of the snow stud base and the stud hole. Furthermore, in the stud hole design of this invention, the included angle between the two sides of the recessed third inlay is 50-90°, compared to the nearly 180° included angle of the existing spherical inlay at this location. This effectively increases the radial compression of the snow stud base and the stud hole. The combination of lateral and radial compression significantly reduces the possibility of early snow stud detachment and is applicable to existing general-purpose snow stud styles. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of the studded winter all-terrain tire of this utility model.

[0023] Figure 2 yes Figure 1 A magnified view of section AA.

[0024] Figure 3 This is a schematic diagram of the nail hole structure of this utility model.

[0025] Figure 4 This is a cross-sectional view of the nail hole in Scale 1-2.

[0026] Figure 5 This is a schematic diagram of the nail hole structure in Comparative Example 1-2.

[0027] Figure 6 This is a schematic diagram of the snow nail being embedded in the nail hole of this utility model.

[0028] Figure 7 This is a schematic diagram of snow nails being inserted into nail holes, as shown in Comparative Example 1-2.

[0029] In the diagram, 1 is the tire tread; 2 is the nail hole; 201 is the exposed part; 202 is the connecting part; 203 is the inlaid part; 2031 is the first inlaid part; 2032 is the second inlaid part; 2033 is the third inlaid part; 3 is the tread block; 401 is the first exposed part; 402 is the first connecting part; 403 is the first inlaid part; and 5 is the snow spike. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model.

[0031] like Figure 1 As shown, this utility model provides a studded winter all-terrain tire. The tire tread 1 has five rows of intersecting tread blocks 3 arranged laterally, along the tire's circumference. The two rows of tread blocks 3 on the inner side and the two rows on the outer side of the tire each have a number of stud holes 2 for embedding snow studs 5, thus forming a row of Z-shaped stud holes 2 on both the inner and outer sides of the tire, resulting in a double-row Z-shaped arrangement of stud holes 2 on the tread 1. Simultaneously, as... Figure 2 As shown, from the tread 1 to the inside of the tire, the nail hole 2 includes an exposed portion 201 in the visible area, a connecting portion 202 in the non-visible area, and an inlaid portion 203 in the non-visible area. The exposed portion 201 and the connecting portion 202 are cylindrical, and the inlaid portion 203 is gourd-shaped. The diameter of the exposed portion 201 and the diameter of the widest part of the inlaid portion 203 are both larger than the diameter of the connecting portion 202.

[0032] Specifically, such as Figure 1 As shown, in the two rows of nail holes 2, the lateral distance between two adjacent nail holes 2 located on different columns of patterned blocks 3 is L1, and the circumferential distance between two adjacent nail holes 2 located on the same column of patterned blocks 3 is L2, L1:L2=(0.3-0.7):1; more preferably, L1:L2=(0.4-0.6):1.

[0033] Specifically, such as Figure 3As shown, the radial height H of the nail hole 2 is 8-15mm, and the height L of the inlay part 203 is 3-6mm. Along the circumferential direction, the inlay portion 203 includes, from top to bottom, a recessed first inlay portion 2031, a raised second inlay portion 2032, and a recessed third inlay portion 2033. The radial height of the first inlay portion 2031 is 3 / 4L, the diameter of the first inlay portion 2031 at the recess is φd = 3-5mm, the included angle α between the two sides of the recess is 100-140°, and the radius of the arc Ra at the recess is 1-3mm. The radial height of the second inlay portion 2032 is 1 / 2L, the diameter of the second inlay portion 2032 at the raised part is φe = 2-4mm, and the radius Rb at the raised part is 1-2mm. The radial height of the third inlay portion 2033 is 2 / 5L, the diameter of the third inlay portion 2033 at the recess is φf = 4-6mm, the included angle β between the two sides of the recess is 50-90°, and the radius of the arc Rc at the recess is 1-3mm. The diameter of the connecting part 202 is φc = 1.8-3mm, and the diameter of the exposed part 201 is φb = 4-6mm.

[0034] Example 1

[0035] In this embodiment, L1:L2 = 0.66:1; H = 9mm, L = 5.5mm; φd = 3.9mm, α = 119°, Ra = 1.5mm; φe = 3mm, Rb = 1.5mm; φf = 4.5mm, β = 62°, Rc = 2mm; φc = 2.5mm, φb = 5mm.

[0036] Comparative Example 1

[0037] The nail holes 2 in Comparative Example 1 adopt the same double-row Z-shaped arrangement design as this utility model, and extend from the tread 1 to the inside of the tire, as shown in the figure. Figure 4 As shown, the nail hole 2 in Comparative Example 1 includes an exposed portion 401 in a visible area, a connecting portion 402 in a non-visible area, and an inlaid portion 403 in a non-visible area. The exposed portion 401 and the connecting portion 402 are cylindrical, and the diameters of both the exposed portion 401 and the inlaid portion 403 are larger than that of the connecting portion 402. However, unlike the nail hole 2 design of this utility model, as... Figure 5 As shown, the inlay part 403 of Comparative Example 1 is spherical, with a height L' = 5 mm and a diameter φa = 4.6 mm.

[0038] Experimental Example 1

[0039] A certain brand of snow studs, 5JX9.0-9-2, was fitted onto 275 / 55R20 SA2100 tires. One set of tires used the stud hole design of Example 1, while the other set used the design of Comparative Example 1. Comprehensive road tests were conducted on both sets of tires under different road conditions. The results are shown in Table 1. The ice braking performance test method was as follows: test temperature -5.5℃, braking distance from 25km / h to 5km / h on ice. The ice handling performance test method was as follows: test temperature -13.5℃, completion of the handling test time. The stud removal rate test method was as follows: stud removal rate after 10,000km of road testing.

[0040] Table 1 shows the road test results of two groups of tires using the nail hole 2 design of Example 1 and Comparative Example 1.

[0041] Tire specifications 275 / 55R20 275 / 55R20 Snow spikes size 5 JX9.0-9-2 JX9.0-9-2 Nail Hole 2 Design Comparative Example 1 Example 1 Ice braking performance 100％ 133.2％ Ice handling performance 100％ 109.4％ nail removal rate 8.5％ 2.8％

[0042] Example 2

[0043] In this embodiment, L1:L2 = 0.59:1; H = 12mm, L = 5.8mm; φd = 4mm, α = 123°, Ra = 1.5mm; φe = 3.2mm, Rb = 1.8mm; φf = 4.6mm, β = 71°, Rc = 2mm; φc = 2.5mm, φb = 5mm.

[0044] Comparative Example 2

[0045] The design of the nail hole 2 in Comparative Example 2 is the same as that in Comparative Example 1, except that the height L' of the inlay part 203 is 5.5mm and the diameter φa of the inlay part 203 is 4.5mm.

[0046] Experiment Example 2

[0047] Snow studs 5JX9.0-11-2 were fitted onto tires of specification LT27565R18-10PR SA2100. One set of tires used the stud hole design of Example 2, while the other set used the design of Comparative Example 2. Comprehensive road tests were conducted on both sets of tires under comparative road conditions. The test results are shown in Table 2. The testing methods for ice braking performance, ice handling performance, and stud removal rate were the same as in Example 1.

[0048] Table 2 shows the road test results of two groups of tires using the nail hole 2 design of Example 1 and Comparative Example 1.

[0049] Tire specifications LT275 / 65R18 LT275 / 65R18 Snow spikes size 5 JX9.0-11-2 JX9.0-11-2 Nail Hole 2 Design Comparative Example 2 Example 2 Ice braking performance 100％ 129.7％ Ice handling performance 100％ 115.4％ nail removal rate 9.2％ 2.4％

[0050] As can be seen from Table 1-2, the studded winter all-terrain tire design of this utility model improves the tire's performance on ice to varying degrees, and significantly reduces the risk of studs coming off, achieving excellent technical results.

Claims

1. A studded winter all-terrain tire, characterized in that, The tire tread (1) is provided with a plurality of nail holes (2) for embedding snow nails (5), and the nail holes (2) are arranged in a double row of Z-shaped arrangement; from the tread (1) to the inside of the tire, the nail hole (2) includes an exposed part (201), a connecting part (202) and an embedded part (203). The exposed part (201) and the connecting part (202) are cylindrical, and the embedded part (203) is gourd-shaped. The diameter of the exposed part (201) and the diameter of the widest part of the embedded part (203) are both greater than the diameter of the connecting part (202).

2. The studded winter all-terrain tire as described in claim 1, characterized in that, The tire tread (1) is provided with five rows of intersecting tread blocks (3) arranged laterally. The tread blocks (3) are arranged along the circumference of the tire. The two rows of tread blocks (3) on the inner side of the tire and the two rows of tread blocks (3) on the outer side of the tire are alternately provided with nail holes (2), thereby forming a row of Z-shaped nail holes (2) on the inner and outer sides of the tire.

3. The studded winter all-terrain tire as described in claim 2, characterized in that, In the two rows of nail holes (2), the lateral distance between two adjacent nail holes (2) located on different columns of patterned blocks (3) is L1, and the circumferential distance between two adjacent nail holes (2) located on the same column of patterned blocks (3) is L2, L1:L2=(0.3-0.7):

1.

4. The studded winter all-terrain tire as described in claim 3, characterized in that, L1:L2=(0.4-0.6):

1.

5. The studded winter all-terrain tire as described in claim 1, characterized in that, Along the circumferential direction, the inlay portion (203) includes a recessed first inlay portion (2031), a raised second inlay portion (2032), and a recessed third inlay portion (2033) in the radial direction from top to bottom. The included angle between the two sides of the recessed third inlay portion (2033) is 50-90°.

6. The studded winter all-terrain tire as described in claim 5, characterized in that, The radial height H of the nail hole (2) is 8-15 mm, and the height L of the inlay part (203) is 3-6 mm.

7. The studded winter all-terrain tire as described in claim 6, characterized in that, The radial height of the first inlay part (2031) is 3 / 4L, the diameter of the first inlay part (2031) at the recess is 3-5mm, the included angle between the two sides of the recess is 100-140°, and the radius of the arc at the recess is 1-3mm.

8. The studded winter all-terrain tire as described in claim 6, characterized in that, The radial height of the second inlay part (2032) is 1 / 2L, the diameter of the second inlay part (2032) at the protrusion is 2-4mm, and the radius of the protrusion is 1-2mm.

9. The studded winter all-terrain tire as described in claim 6, characterized in that, The radial height of the third inlay part (2033) is 2 / 5L, the diameter of the third inlay part (2033) at the recess is 4-6mm, and the radius of the arc at the recess is 1-3mm.

10. The studded winter all-terrain tire as described in any one of claims 7-9, characterized in that, The diameter of the connecting part (202) is 1.8-3 mm, and the diameter of the exposed part (201) is 4-6 mm.

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