Single-direction fuel-saving tire tread pattern for medium and long-distance driving wheels

Abstract

This invention relates to drive wheel tires for heavy-duty vehicles, and more particularly to a unidirectional, fuel-efficient tread pattern for drive wheels specifically designed for medium- and long-distance travel. A unidirectional, fuel-efficient tread pattern for drive wheels specifically designed for medium- and long-distance travel includes a zigzag central tread groove located in the middle of the tread. The key feature is that a zigzag crown tread groove is distributed on the outer side of each central tread groove, and a zigzag tread groove is distributed on the outer side of each of the two crown tread grooves; the tread between the central tread groove and the crown tread groove is a tread rib A. Compared to the prior art, the technical advantages of this invention are that it features a highly saturated, uniform small mahjong tile pattern design, which can increase tire mileage by 5%-8%, improve rolling resistance performance by 8%-10%, and provide stronger driving force.

Description

Technical Field

[0001] This invention relates to drive wheel tires for heavy-duty vehicles, and more particularly to a single-direction fuel-saving tread pattern for drive wheels specifically designed for medium- and long-distance travel. Background Technology

[0002] The design of tire tread patterns has a significant impact on tire performance and is an important part of ensuring driving safety. It is a crucial design project in the tire product development process.

[0003] As domestic end-users place increasing emphasis on fuel efficiency, the market demands more fuel-efficient dual-drive dedicated drive pattern products. The high-saturation small tread pattern drive products that need to be developed must possess characteristics such as strong drive capability, high mileage, anti-stone trapping, resistance to high and low wear patterns, prevention of groove bottom cracking, and fuel efficiency.

[0004] Current technical status of the product: The current product has outdated tread patterns, is prone to stone trapping on the tire shoulder, and exhibits uneven wear in the tread blocks in the center of the tire crown. The product has insufficient mileage, high fuel consumption, and poor market competitiveness. Summary of the Invention

[0005] The technical problem to be solved by this invention is: how to design a single-guided fuel-saving tread pattern for drive wheels that is specifically designed for medium and long distances, while also possessing the characteristics of strong drive and high mileage.

[0006] The specific technical solution of the present invention is as follows:

[0007] A unidirectional, fuel-saving tread pattern for drive wheels, specifically designed for medium- and long-distance driving, includes a zigzag central tread groove located in the middle of the tread. The pattern is characterized by: a zigzag crown tread groove distributed on the outer side of each central tread groove, and a zigzag shoulder tread groove distributed on the outer side of each of the two crown tread grooves; the tread between the central tread groove and the crown tread groove is a tread rib A, and the tread between the crown tread groove and the shoulder tread groove is a tread rib B. Multiple steel plate grooves are distributed on both tread rib A and tread rib B, including alternating deep and shallow steel plate grooves; the tread outside the shoulder tread groove is a shoulder tread rib, which has multiple oblique grooves; the tread pattern is formed by mirroring the left tread pattern on the central axis and then shifting it by one unit to create the right tread pattern, thus constituting a unidirectional tread pattern; the tread pattern employs an equal pitch design.

[0008] The inclined grooves 7 on the same side are parallel and set, and the deep steel plate grooves 9 and shallow steel plate grooves 10 on the same side are parallel and set at equal intervals.

[0009] The bottom of the inclined groove is fixed with connecting ribs.

[0010] The number of pitches is 65-75.

[0011] The ratio of the width of the center tread groove to the crown tread groove and the shoulder tread groove is 1:0.5:2.34; the ratio of the depth of the center tread groove to the crown tread groove and the shoulder tread groove is 1:0.75:1; and the ratio of the width of tread rib A to the width of tread rib B and the shoulder tread rib is 1:1:1.42.

[0012] The width of the central patterned groove 1 is 2.5-3.5mm, the depth is 18-22mm, and the bottom has an arc design;

[0013] The width of the tread groove 2 is 1-2mm, the depth is 9-11mm, and the bottom is curved.

[0014] The width of the shoulder tread groove 3 is 6-8mm, the angle is 8°-10°, the depth is 18-22mm, and the bottom is curved.

[0015] Both deep and shallow steel plate grooves are 2D (two-dimensional) linear designs with an angle of 22°-28° to the horizontal direction. Their width is 0.6-1mm, and they have a curved bottom design. The depth range of deep steel plate grooves is 10-12mm, and the depth range of shallow steel plate grooves is 2-4mm. The deep and shallow steel plate grooves are arranged alternately along the circumference.

[0016] The angle between the inclined groove and the horizontal plane ranges from 22° to 28°, the width of the inclined groove ranges from 8mm to 10mm, and the angle of the inclined groove ranges from 8° to 12°.

[0017] The width of the connecting rib is 68%-75% of the width of the inclined groove, and its depth is 50% of the depth of the inclined groove. The included angle between the two sides of the connecting rib is an acute angle, and the top edge C and bottom edge C of the connecting rib are both designed with arcs.

[0018] The steel plate grooves connect the tread grooves of the tire crown to the center tread groove or the shoulder tread groove, dividing the tread ribs A and B into mahjong tile shapes.

[0019] The tread grooves on the crown, center, and shoulder are arranged in parallel and each includes multiple V-shaped groove units connected in series. Each V-shaped groove unit includes a first straight segment and a second straight segment. The connection between the first straight segment and the second straight segment is a bend point. The ends of the deep or shallow steel plate grooves are connected to the bend points of the tread grooves on the crown or center.

[0020] The deep or shallow steel plate grooves have the same orientation, both including a first straight section, a second straight section, and a third straight section of the steel plate groove connected in series. The first straight section and the third straight section of the steel plate groove are parallel and equal in length.

[0021] One bend in the center tread groove connects only one steel plate groove. The phrase "translated one unit" in the previous sentence, "the tread pattern is mirror-symmetrical from the left side of the center axis and then translated one unit," means "translated from one bend to its adjacent bend."

[0022] The tire shoulder tread grooves consist of multiple L-shaped tread groove units connected in series. Each L-shaped tread groove unit includes the fourth straight segment and the fifth straight segment of the tread groove unit.

[0023] The angle 904 between the fourth straight segment and the fifth straight segment of the tread groove unit is between 100° and 130°, the angle between the fourth straight segment of the tread groove unit and the tire axis is between 70° and 89°, and the length of the second straight segment of the steel plate groove is less than half the length of the first straight segment of the steel plate groove.

[0024] The included angle 205 between the first straight line segment of the unit and the second straight line segment of the patterned groove unit is between 130° and 160°.

[0025] The angle between the deep or shallow steel strip groove and the tire axle is between 20° and 40°, and the angle between the deep or shallow steel strip groove and the center tread groove is between 70° and 100°.

[0026] The included angle between the first straight segment and the second straight segment of the steel plate groove is 130°-160°;

[0027] The number of pitches is 65-75.

[0028] Compared with the prior art, the technical effect of the present invention is that the present invention has a highly saturated and uniform small mahjong tile pattern design, which can increase the tire mileage by 5%-8%, improve the tire rolling resistance performance by 8%-10%, and also make the driving force stronger. Attached Figure Description

[0029] Figure 1 This is a planar unfolded schematic diagram of the present invention.

[0030] Figure 2 This is a schematic cross-sectional view of groove A.

[0031] Figure 3 This is a schematic cross-sectional view of groove B.

[0032] Figure 4 This is a schematic cross-sectional view of groove C.

[0033] Figure 5 This is a cross-sectional schematic diagram of the steel plate groove.

[0034] Figure 6 This is a cross-sectional schematic diagram of the oblique groove on the tire shoulder.

[0035] Figure 7 This is a cross-sectional schematic diagram of the connecting reinforcement.

[0036] Figure 8 yes Figure 1 A magnified view of a portion of the image. Detailed Implementation

[0037] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0038] like Figure 1 A type of unidirectional fuel-saving tread pattern for drive wheels specifically designed for medium and long distances, comprising a zigzag central tread groove 1 located in the middle of the tread, a zigzag crown tread groove 2 distributed on the outer side of the central tread groove 1, and a zigzag shoulder tread groove 3 distributed on the outer side of each of the two crown tread grooves 2.

[0039] The tread between the center tread groove 1 and the crown tread groove 2 is a tread rib A4, and the tread between the crown tread groove 2 and the shoulder tread groove 3 is a tread rib B5. Multiple steel plate grooves are distributed on both the tread rib A4 and the tread rib B5. The steel plate grooves include deep steel plate grooves 9 and shallow steel plate grooves 10 that are distributed alternately.

[0040] The outer side of the shoulder tread groove 3 is the shoulder tread rib 6, and the shoulder tread rib 6 is provided with multiple oblique grooves 7, which are equidistantly arranged.

[0041] The deep steel plate groove 9 and the shallow steel plate groove 10 on the same side are set parallel and equidistantly, and the inclined groove 7 on the same side are set parallel and equidistantly.

[0042] To effectively prevent stones from getting stuck and to resist bottom cracking, the bottom of the inclined ditch 7 is fixed with connecting ribs 8.

[0043] The tread pattern is formed by mirroring the pattern on the left side of the central axis and then shifting it by one unit to create the pattern on the right side, which is a unidirectional pattern.

[0044] The tread pattern adopts an equal pitch design with a pitch number of 65-75.

[0045] To increase the tire's driving force and make the wear more even, the steel plate grooves connect the tread groove 2 to the center tread groove 1 or the shoulder tread groove 3, and divide the tread ribs A4 and B5 into mahjong tile shapes.

[0046] The tread ribs are divided by alternating deep and shallow steel grooves 9 or shallow steel grooves 10, which improves the overall rigidity of the tread blocks, solves the problem of uneven wear of the tread blocks, and the saturation of the tread pattern is close to 82%, ensuring the tire's mileage.

[0047] The shoulder tread ribs 6 are evenly divided by oblique grooves 7, and the bottom of the oblique grooves 7 is provided with connecting ribs 8, which effectively prevents stones from getting stuck and resists bottom cracking.

[0048] The ratio of the width of the center tread groove 1 to the crown tread groove 2 and the shoulder tread groove 3 is 1:0.5:2.34; the ratio of the depth of the center tread groove to the crown tread groove and the shoulder tread groove is 1:0.75:1; and the ratio of the width of tread rib A4 to the width of tread rib B5 and the shoulder tread rib 6 is 1:1:1.42.

[0049] The proportional design of the tread grooves and tread block widths improves the tire's rolling resistance performance by 8%-10%; the tread saturation is close to 82%, which increases the tire's mileage by 5%-8%.

[0050] like Figure 2 As shown, the width W1 of the central patterned groove 1 is 2.5-3.5mm, the depth L1 is 18-22mm, and the bottom C1 has an arc design.

[0051] like Figure 3 As shown, the width W1 of the tread groove 2 is 1-2mm, the depth L1 is 9-11mm, and the bottom C1 has an arc design.

[0052] like Figure 4 As shown, the width W1 of the tire shoulder tread groove 3 is 6-8mm, the angle is 8°-10°, the depth L2 is 18-22mm, and the bottom C1 has an arc design.

[0053] like Figure 5 As shown, both the deep steel groove 9 and the shallow steel groove 10 are 2D (two-dimensional) linear designs with an angle of 22°-28° to the horizontal direction. Their width W1 is 0.6-1mm, and the bottom C1 is an arc design. The depth range L1 of the deep steel groove 9 is 10-12mm, and the depth range L1 of the shallow steel groove 10 is 2-4mm. The deep steel groove 9 and the shallow steel groove 10 are staggered along the circumference, which improves the overall rigidity of the patterned block and makes the patterned block resistant to wear from different heights.

[0054] like Figure 6 As shown, the tire shoulder adopts an open shoulder design. The angle of the oblique groove 7 with the horizontal plane ranges from 22° to 28°. The width of the oblique groove 7, W1, ranges from 8mm to 10mm. The angle of the oblique groove 7, deg., ranges from 8° to 12°.

[0055] like Figure 7 As shown, the width W1 of the connecting rib 8 is 68%-75% of the width of the inclined groove 7, and its depth is 50% of the depth L2 of the inclined groove 7. The included angle between the two sides of the connecting rib 8 is an acute angle, and the top edge C1 and the bottom edge C2 of the connecting rib 8 are both curved. The design of the inclined groove 7 and the design angle of the patterned groove enable the pattern to have anti-bottom cracking and anti-stone-entrapment properties.

[0056] like Figure 8 The crown tread groove 2, the center tread groove 1, and the shoulder tread groove 3 are arranged in parallel, each including multiple V-shaped tread groove units 201 connected in series. The V-shaped tread groove unit 201 includes a first straight segment 202 and a second straight segment 203. The connection between the first straight segment 202 and the second straight segment 203 is a bend point 204. The included angle 205 between the first straight segment 202 and the second straight segment 203 is between 130° and 160°.

[0057] like Figure 8 The angle 1001 between the deep steel groove 9 or the shallow steel groove 10 and the tire axle is between 20° and 40°, and the angle 101 between the deep steel groove 9 or the shallow steel groove 10 and the center tread groove 1 is between 70° and 100°.

[0058] like Figure 8 The ends of the deep steel groove 9 or the shallow steel groove 10 are connected to the bending point 204 of the tread groove 2 or the center groove 1.

[0059] like Figure 8 The deep steel plate groove 9 and the shallow steel plate groove 10 have the same orientation, and both include a first straight segment 901, a second straight segment 903, and a third straight segment 902 connected in series. The first straight segment 901 and the third straight segment 902 are parallel and equal in length. The length of the second straight segment 903 is less than half the length of the first straight segment 901. The included angle 904 between the first straight segment 901 and the second straight segment 903 is between 130° and 160°.

[0060] like Figure 8 The shoulder tread groove 3 includes multiple L-shaped tread groove units 301 connected in series. The L-shaped tread groove unit 301 includes a fourth straight segment 302 and a fifth straight segment 303. The included angle 904 between the fourth straight segment 302 and the fifth straight segment 303 is between 100° and 130°. The included angle 304 between the fourth straight segment 302 and the tire axis is between 70° and 89°.

[0061] A bend 204 in the center tread groove 1 connects only one steel plate groove. The phrase "translated one unit" in the previous text, "the tread pattern is mirror-symmetric from the left side of the center axis and then translated one unit", means "translated from one bend 204 to its adjacent bend 204".

[0062] The design of the fine grooves in the tread blocks, as well as the design of the groove parameters and positions, enables the tire to have stronger driving force and more even wear.

[0063] The highly saturated, uniform small mahjong tile pattern design can increase tire mileage by 5%-8%; the design of the oblique grooves on the tire shoulders and the design angle of the tread grooves can give the tread pattern anti-bottom cracking and anti-stone trapping performance.

[0064] This invention provides a unidirectional tire tread pattern specifically for drive wheels, enabling the tire to be used on medium- and long-distance national highways. It features strong traction, high mileage, resistance to uneven wear on both sides of the tread blocks, resistance to bottom cracking, stone trapping, and fuel efficiency. The traction is ensured by utilizing the curvature of the tread grooves; the mileage is increased by 5%-8% through the design of the tread groove to tread block ratio; the depth and angle design of the sipes on the center and crown tread blocks enhances resistance to uneven wear; the design of the oblique grooves on the tire shoulder and the angle of the tread groove walls provide resistance to bottom cracking and stone trapping; furthermore, the overall design of this tread pattern improves the tire's rolling resistance performance by 8%-10%.

[0065] The tread pattern is a unidirectional pattern with an equal pitch design and a pitch number of 65-75.

[0066] The present invention will now be described in detail with reference to specific embodiments. It should be noted that these embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments based on the above description of the present invention, all of which fall within the scope of protection of the present invention.

[0067] For other details, please refer to the existing technology.

[0068] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A single-guided fuel-saving tread pattern for drive wheels specifically designed for medium- and long-distance driving, comprising a zigzag central tread groove (1) located in the middle tread, characterized in that: A tortuous crown groove (2) is distributed on the outer side of the central groove (1), and a tortuous shoulder groove (3) is distributed on the outer side of each of the two crown grooves (2). The tread between the center tread groove (1) and the crown tread groove (2) is tread rib A (4), and the tread between the crown tread groove (2) and the shoulder tread groove (3) is tread rib B (5). Multiple steel plate grooves are distributed on both tread rib A (4) and tread rib B (5). The steel plate grooves include deep steel plate grooves (9) and shallow steel plate grooves (10) that are distributed alternately. The tread outside the shoulder tread groove (3) is the shoulder tread rib (6), and the shoulder tread rib (6) is provided with multiple oblique grooves (7). The tread pattern is formed by mirroring the pattern on the left side of the central axis and then shifting it by one unit to create the pattern on the right side, which is a unidirectional pattern. The tire tread pattern adopts an equal pitch design; The crown tread groove (2) is arranged in parallel with the center tread groove (1) and the shoulder tread groove (3), and each includes multiple V-shaped tread groove units (201) connected in series. The V-shaped tread groove unit (201) includes a first straight segment (202) and a second straight segment (203) of the tread groove unit. The connection between the first straight segment (202) and the second straight segment (203) of the tread groove unit is a bending point (204). The ends of the deep steel plate groove (9) or the shallow steel plate groove (10) are connected to the bending point (204) of the crown tread groove (2) or the center tread groove (1). The deep steel plate groove (9) and the shallow steel plate groove (10) have the same orientation, and both include the first straight section (901), the second straight section (903), and the third straight section (902) of the steel plate groove connected in sequence. The first straight section (901) and the third straight section (902) of the steel plate groove are parallel and equal. A bend (204) of the central tread groove (1) is connected to only one steel plate groove. The phrase "translate one unit" in "the tread pattern is mirror-symmetric from the pattern on the left side of the central axis and then translated by one unit" means "translate from one bend (204) to its adjacent bend (204). The shoulder tread groove (3) includes multiple L-shaped tread groove units (301) connected in series. The L-shaped tread groove unit (301) includes the fourth straight segment (302) and the fifth straight segment (303) of the tread groove unit.

2. The single-guided fuel-saving tread pattern for medium- and long-distance driving wheels as described in claim 1, characterized in that: The inclined grooves (7) on the same side are set in parallel, and the deep steel plate grooves (9) and shallow steel plate grooves (10) on the same side are set in parallel and at equal intervals.

3. The single-guided fuel-saving tread pattern for medium- and long-distance dedicated drive wheels as described in claim 1, characterized in that: The bottom of the inclined groove (7) is fixed with a connecting rib (8).

4. The single-guided fuel-saving tread pattern for medium- and long-distance dedicated drive wheels as described in claim 1, characterized in that: The number of pitches is 65-75.

5. The single-guided fuel-saving tread pattern for medium- and long-distance dedicated drive wheels as described in claim 1, characterized in that: The ratio of the width of the center tread groove (1) to the crown tread groove (2) and the shoulder tread groove (3) is 1:0.5:2.

34. The ratio of the depth of the center tread groove to the crown tread groove and the shoulder tread groove is 1:0.75:

1. The ratio of the width of the tread rib A (4) to the tread rib B (5) and the shoulder tread rib (6) is 1:1:1.

42.

6. The single-guided fuel-saving tread pattern for medium- and long-distance dedicated drive wheels as described in claim 5, characterized in that: The width of the central patterned groove (1) is 2.5-3.5mm, the depth is 18-22mm, and the bottom is designed with an arc. The width of the tread groove (2) is 1-2mm, the depth is 9-11mm, and the bottom is designed with an arc. The width of the shoulder tread groove (3) is 6-8mm, the included angle between the two side walls of the shoulder tread groove (3) is 8°-10°, the depth is 18-22mm, and the bottom is designed with an arc. The deep steel plate groove (9) or the shallow steel plate groove (10) are both 2D straight line designs with an angle of 22°-28° with the horizontal direction. Their width is 0.6-1mm and the bottom is arc-shaped. The depth range of the deep steel plate groove (9) is 10-12mm and the depth range of the shallow steel plate groove (10) is 2-4mm. The deep steel plate groove (9) or the shallow steel plate groove (10) are arranged alternately along the circumferential direction. The angle between the inclined groove (7) and the horizontal plane is in the range of 22°-28°, the width of the inclined groove (7) is in the range of 8mm-10mm, and the angle between the two side walls of the inclined groove (7) is 8°-12°. The width of the connecting rib (8) is 68%-75% of the width of the inclined groove (7), and its depth is 50% of the depth of the inclined groove (7). The included angle between the two sides of the connecting rib (8) is an acute angle, and the top edge and bottom edge of the connecting rib (8) are both arc-shaped.

7. The single-guided fuel-saving tread pattern for medium- and long-distance driving wheels as described in claim 2, characterized in that: The steel plate grooves are respectively connected to the crown tread groove (2) and the center tread groove (1) or the shoulder tread groove (3).

8. The single-guided fuel-saving tread pattern for medium- and long-distance dedicated drive wheels as described in claim 1, characterized in that: The angle (904) between the fourth straight segment (302) and the fifth straight segment (303) of the tread groove unit is between 100° and 130°, the angle (304) between the fourth straight segment (302) of the tread groove unit and the tire axis is between 70° and 89°, and the length of the second straight segment (903) of the steel plate groove is less than half the length of the first straight segment (901) of the steel plate groove. The angle (205) between the first straight segment (202) of the patterned groove unit and the second straight segment (203) of the patterned groove unit is between 130° and 160°; The angle (1001) between the deep steel strip groove (9) or the shallow steel strip groove (10) and the tire axle is between 20° and 40°, and the angle (101) between the deep steel strip groove (9) or the shallow steel strip groove (10) and the center tread groove (1) is between 70° and 100°. The included angle (904) between the first straight segment (901) and the second straight segment (903) of the steel plate groove is between 130° and 160°.

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