Spare tire

Abstract

The utility model relates to the technical field of automobile tires, and particularly discloses a spare tire, which is used for solving the problem of insufficient safety of the spare tire in the prior art. Comprising two steel wire rings, the outer sides of the steel wire rings are wrapped with supporting apex, a sidewall is distributed on the outer side of the supporting apex, a polyester tire body layer is arranged between the supporting apex and the sidewall, a lining layer is arranged on the inner side of the supporting apex where the polyester tire body layer is located, two steel wire belt plies are arranged at the upper end of the lining layer, and tread layers are arranged on the outer sides of the steel wire belt plies. The tire further comprises a pattern structure arranged on the tread layer. By optimizing the tread pattern design, the control stability of the tire in the running process is improved, and the braking distance is reduced; by optimizing the contour and structural design of the tire, the tire stress in the driving process is improved, the tire wear is delayed, the effective driving time of the tire is prolonged, and the driving safety is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile tire, especially points to the spare tire. BACKGROUND

[0002] Generally, when the tire encounters an emergent situation during driving, the tire needs to be replaced with a spare tire. The existing spare tire is divided into two types: full-size spare tire and non-full-size temporary spare tire. The full-size spare tire can be used to replace the automobile tire, ensuring the safety performance during driving. The speed level and load capacity of the non-full-size temporary spare tire are different from those of the normal tire, and it can only be used temporarily.

[0003] As a temporary or emergency tire, the service life of the spare tire is short, and it is easy to be damaged, which affects the driving stability and safety factor of the automobile.

[0004] Therefore, the present application provides a spare tire to eliminate the drawbacks of the prior art. SUMMARY

[0005] The utility model discloses a spare tire, which solves the problem of insufficient safety of the spare tire in the prior art.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A spare tire comprises two steel wire beads, the outer side of the steel wire bead is wrapped with a supporting triangle rubber, a tire side is distributed on the outer side of the supporting triangle rubber, a polyester carcass layer is arranged between the supporting triangle rubber and the tire side, an inner liner is arranged on the inner side of the supporting triangle rubber where the polyester carcass layer is located, two steel wire belt layers are arranged on the upper end of the inner liner, a tread layer is arranged on the outer side of the steel wire belt layer, and a pattern structure is arranged on the tread layer.

[0008] Based on the above technical scheme, the utility model further provides the following optional technical scheme:

[0009] In an optional scheme, the thickness of the polyester carcass layer is 0.8-1.0 mm, the breaking force of the polyester cord single wire is 200-300 N, and the content of the chlorinated butyl rubber in the inner liner is greater than or equal to 70%.

[0010] In an optional scheme, the thickness of the steel wire belt layer is 0.8-1.05 mm, the breaking force of the single wire is 400-460 N, the width difference B of the single side of the TDW is 4-6 mm, the Shore A hardness of the rubber material of the tire side is 50-56, and the elongation at break is 550-620.

[0011] In an alternative: the pattern structure includes a center pattern K2, a shoulder pattern K1, the pattern is arranged by longitudinal grooves A3 and transverse "Z-shaped" grooves A4, improving the driving stability of the tire; the center pattern K2 is uniformly distributed with fine grooves A2, the length is 5-10mm, the depth is 1-3mm, the width is 0.6-0.8mm, and the angle α of the fine groove A2 is 145-155°.

[0012] In an alternative: the shoulder pattern K1 is uniformly distributed with fine grooves A1, the length is 20-30mm, the depth is 1-3mm, and the width is 0.6-0.8mm. The angle β of the longitudinal groove A3 is 140-155°.

[0013] In an alternative: the tire ground contact width is TDW, the width L / TDW of the longitudinal groove A3 is 3-5%, the depth is 3-5mm, and the distance L1 of the groove from the center of the pattern is 13-16mm.

[0014] In an alternative: the pattern of the pattern structure is arranged in disorder by three different pattern pitches, the number of pitches is 23, 24 and 23, P1 / P2 is 1.2-1.3, and P1 / P3 is 1.4-1.6.

[0015] In an alternative: the pattern blocks of the pattern structure are arranged in staggered manner, and a "Z-shaped" pattern block design is adopted, the center pattern block K2 is provided with pattern transverse grooves and longitudinal grooves, the angle δ of the transverse groove and the longitudinal groove is 105°, and the angle δ' of the transverse groove and the transverse groove is 105°.

[0016] In an alternative: the shoulder pattern block K1 is provided with a gentle "Z-shaped" design, the angle ω of the pattern transverse groove and the longitudinal groove is 75°, and the angle β of the transverse groove and the transverse groove is 140-155°.

[0017] Compared with the prior art, the utility model has the beneficial effects as follows:

[0018] The utility model improves the control stability in the driving process of the tire, reduces the braking distance by optimizing the tread pattern design; improves the stress of the tire in the driving process, delays the wear of the tire, improves the effective driving time of the tire, and ensures the driving safety by optimizing the tire contour and structure design. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the pattern design schematic view of the utility model.

[0020] Figure 2 It is the material distribution schematic view of the tire of the utility model.

[0021] Figure 3 It is the center pattern K2 structure schematic view of the utility model.

[0022] Figure 4The shoulder pattern K1 structure schematic diagram of the utility model.

[0023] Figure 5 The pressure distribution diagram of the utility model.

[0024] Mark annotation: steel wire ring 1, support triangle rubber 2, sidewall 3, polyester carcass layer 4, inner liner 5, steel wire belt layer 6, tread layer 7. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be apparently and completely described below with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] As Figures 1-5 shown, the utility model embodiments provide a spare tire, including two steel wire rings 1, two support triangle rubbers 2, two sidewalls 3, polyester carcass layer 4, inner liner 5, two layers of steel wire belt layers 6, tread layer 7;

[0027] The steel wire ring 1 outside is wrapped with support triangle rubber 2, and the sidewall 3 is distributed at the outside of support triangle rubber 2, a polyester carcass layer 4 is equipped between support triangle rubber 2 and sidewall 3, the inside of support triangle rubber 2 where polyester carcass layer 4 is located is equipped with inner liner 5, two layers of steel wire belt layers 6 are equipped on the upper end of inner liner 5, and the outside of steel wire belt layer 6 is equipped with tread layer 7;

[0028] Polyester carcass layer 4, its thickness is 0.8~1.0mm, and polyester cord single filament breaking force is valued 200~300N;Inner liner 5 chlorinated butyl rubber content is ≥70%;Steel wire belt layer 6, its thickness is 0.8~1.05mm, and single filament breaking force is 400~460N, and width and TDW single side difference B = 4~6mm;Sidewall 3, its rubber material shore A type hardness is 50~56, and the elongation at break is 550~620;

[0029] Still include the pattern structure of being provided at tread layer 7, the pattern structure includes center pattern K2, shoulder pattern K1, and the pattern is arranged by longitudinal groove A3 and transverse "Z type" groove A4, improves tire driving stability;Center pattern K2, evenly distributed fine groove A2, length 5~10mm, depth 1~3mm, width 0.6~0.8mm, and the angle α of fine groove A2 = 145 ° ~ 155 °;Shoulder pattern K1, evenly distributed fine groove A1, length 20~30mm, depth 1~3mm, width 0.6~0.8mm.Longitudinal groove A3 angle β = 140~155 °;

[0030] The tire ground contact width is TDW, the longitudinal groove A3 has a width L / TDW = 3%~5% and a depth of 3~5mm, and the groove distance from the pattern center is L1 = 13~16mm:

[0031] The pattern of the pattern structure is arranged in disorder by three different pitches, the number of pitches is 23, 24, 23, P1 / P2 = 1.2~1.3, and P1 / P3 = 1.4~1.6;

[0032] The pattern blocks of the pattern structure are arranged in staggered manner, and a "Z-type" pattern block design is adopted, the middle pattern block K2 has a pattern transverse groove and a longitudinal groove angle δ = 105°, and a transverse groove and a transverse groove angle δ' = 105°; the shoulder pattern block K1 is a gentle "Z-type design", the pattern transverse groove and the longitudinal groove angle ω = 75°, and the transverse groove and the transverse groove angle β = 140~155°; the "Z-type" pattern block is arranged in staggered manner at different angles, which effectively optimizes the rigid arrangement of the pattern block K1 and the pattern block K2, thereby further improving the safety performance of the product in actual driving process;

[0033] During normal use of the product, the pattern is evenly distributed to the steel belt layer 6 after the rigidity of the pattern is optimized, and is evenly stressed through the carcass layer 3 and the sidewall layer 5, and is transmitted to the rim. In this process, the tire is evenly stressed, without adverse deformation and stress concentration, ensuring that the tire maintains safety performance under various working conditions such as forward, backward, turning, braking, etc.

[0034] The test tire of T125 / 80R1799M prepared according to the scheme has an optimized pattern pitch and transverse groove design, and an optimized structure design.

[0035] 1. According to the ECE R64 method, the dry and wet road braking is carried out, the front axle load is 1145kg, the rear axle load is 1080kg, the braking distance is <32m at 80km / h trigger braking, the maximum pedal force is <250N, there is no abnormal vibration, and there is no abnormal wear.

[0036] 2. According to the test method specified in GB / T 4502, the durability experiment is carried out, the tire is continuously rolled at 80km / h for 34h at a tire load of 775kg and an air pressure of 360kPa at a room temperature of 36~40℃, and the tire has no problem.

[0037] 3. According to the test method specified in GB / T 4502, the high-speed experiment is carried out, the tire is run at 130km / h for 10min at a tire load of 775kg and an air pressure of 420kPa at a room temperature of 36~40℃, and the tire has no problem.

[0038] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A spare tire characterized by: The utility model provides a kind of tire, including two steel wire rings (1), the steel wire ring (1) outside is wrapped with support triangle gum (2), sidewall (3) is distributed in support triangle gum (2) outside, support triangle gum (2) and sidewall (3) between being equipped with a layer of polyester carcass layer (4), polyester carcass layer (4) inside in support triangle gum (2) is equipped with inner liner (5), inner liner (5) upper end is equipped with two layers of steel wire belt (6), steel wire belt (6) outside is equipped with tread layer (7);It further includes the pattern structure of tread layer (7).

2. Spare tire according to claim 1, characterized in that The polyester carcass layer (4) has a thickness of 0.8-1.0 mm, and the polyester cord single filament breaking force is 200-300 N; the inner liner (5) has a chlorinated butyl rubber content of greater than or equal to 70%.

3. The spare tire according to claim 2, wherein, The steel wire belt (6) has a thickness of 0.8-1.05 mm, a single filament breaking force of 400-460 N, and a width and TDW single side difference B of 4-6 mm; the sidewall (3) has a Shore A hardness of 50-56, and a tensile elongation of 550-620.

4. The spare tire according to claim 3, wherein The pattern structure includes a center pattern K2 and a shoulder pattern K1, and the pattern is arranged by longitudinal grooves A3 and transverse "Z-shaped" grooves A4 to improve the driving stability of the tire; the center pattern K2 is uniformly distributed with fine grooves A2, which have a length of 5-10 mm, a depth of 1-3 mm, a width of 0.6-0.8 mm, and an angle α of 145°-155°.

5. The spare tire of claim 4, wherein, The shoulder pattern K1 is uniformly distributed with fine grooves A1, which have a length of 20-30 mm, a depth of 1-3 mm, a width of 0.6-0.8 mm, and an angle β of 140-155°.

6. The spare tire according to claim 5, characterized in that, The tire ground contact width is TDW, the longitudinal groove A3 has a width L / TDW of 3%-5%, a depth of 3-5 mm, and a groove center distance L1 of 13-16 mm.

7. The spare tire according to claim 6, characterized in that, The pattern of the pattern structure is arranged in disorder with three different pitch lengths, and the pitch lengths are 23, 24, and 23, P1 / P2=1.2-1.3, and P1 / P3=1.4-1.

6.

8. Spare tire according to claim 7, characterized in that The pattern blocks of the pattern structure are arranged in disorder, and a "Z-shaped" pattern block design is adopted, the center pattern block K2 has a pattern transverse groove and a longitudinal groove angle δ of 105°, and a transverse groove and a transverse groove angle δ' of 105°.

9. The spare tire of claim 1, wherein, The shoulder pattern block K1 has a gentle "Z-shaped" design, a pattern transverse groove and a longitudinal groove angle ω of 75°, and a transverse groove and a transverse groove angle β of 140-155°.

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