A full steel specification tire carcass structure for improved comfort

Abstract

The application discloses a full-steel specification tire body structure for improving comfort, relates to the technical field of tire bodies, and comprises a tire crown, further comprises: a tire body buffer structure arranged on the tire crown and used for reducing the rigidity of tire sides, wherein the tire body buffer structure comprises a tire bead, the tire bead is connected with the side edge of the tire crown, the lower part of the tire bead is connected with a tire lip part, the inner side of the tire lip part is connected with an air-tight layer, the air-tight layer is coated with a first tire body and a second tire body between the air-tight layer and the tire bead, the first tire body is attached to the inner wall of the air-tight layer and is curved upwards towards the tire bead, the first tire body is attached to the second tire body, the part of the second tire body that is curved upwards is coated with a triangular rubber, and the bottom of the triangular rubber is coated with a reinforcing part, the first tire body and the second tire body are arranged, the rigidity of the full-steel tire is lower, the strength of the single-layer semi-steel tire body is higher, the strength of the tire can be guaranteed, and the tire is more comfortable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tire carcass, and particularly relates to a full-steel specification tire carcass structure for improving comfort. BACKGROUND

[0002] A tire is a round annular elastic rubber product for ground rolling mounted on various vehicles or machines, which is subjected to various deformations, loads, forces and high and low temperatures during driving, and therefore must have high load bearing performance, traction performance and cushioning performance, is usually mounted on a metal rim to realize contact with a road surface and ensure driving performance of a vehicle, and is often used under complex and harsh conditions.

[0003] In order to ensure that the tire is fixed on the steel ring, the rim steel wire is arranged on the rim of the tire in the prior art, and due to the specific production process and material composition of the steel wire, the steel wire has a certain rigidity, which leads to large rigidity of the tire side, the rigidity is the ability of an object to resist deformation, and can resist external force to a certain extent, and since the rigidity of the steel wire is large, the tire is not easy to deform, and therefore the cushioning capacity of the tire is poor, so that when driving on a bumpy road, not only the tire is damaged, but also passengers sitting in the vehicle feel strong vibration, which easily causes car sickness, and in view of the above, the comfort of the tire in the prior art is poor, and therefore the full-steel specification tire carcass structure for improving comfort is proposed. SUMMARY

[0004] The present application aims at overcoming the shortcomings of the prior art, and provides a full-steel specification tire carcass structure for improving comfort.

[0005] To achieve the above object, the present application provides the following technical scheme: a full-steel specification tire carcass structure for improving comfort, comprising a tire crown, and further comprising:

[0006] A carcass cushioning structure is arranged on the tire crown and is used for reducing the rigidity of the tire side.

[0007] The carcass cushioning structure comprises a bead rubber, the bead rubber is connected with a side edge of the tire crown, a lower part of the bead rubber is connected with a lip portion, an inner side of the lip portion is connected with an air tight layer, the air tight layer is coated with a first carcass and a second carcass between the bead rubber, the second carcass is coated with a belt layer between the tire crown, the first carcass is adhered to an inner wall of the air tight layer and is curved upwardly towards the bead rubber, the first carcass is adhered to the second carcass, a part of the second carcass curved upwardly is coated with a triangular rubber, a bottom part of the triangular rubber is coated with a reinforcing member, the tire crown and the second carcass are adhered by a mold rubber, and the lip portion and the first carcass are adhered by a reinforcing layer.

[0008] As a preferred scheme of the present application, the reinforcing member comprises a bead wire connected by wear-resistant glue, a middle part of the wear-resistant glue is embedded with an elastic sheet and a metal hoop, and the outside of the elastic sheet and the metal hoop is in contact with the second carcass.

[0009] As a preferred scheme of the present application, the belt layer is made of three layers of steel wire cords, the steel wire cord comprises a plurality of groups of steel wires, the steel wires are produced by twisting a 0.30mm single wire to produce a 2x0.30UT steel wire cord by using a "C82D2Cr steel wire".

[0010] As a preferred scheme of the present application, the upper end point of the first carcass is higher than the upper end point of the second carcass to form a reverse package for the second carcass, and the apex is bonded with the first carcass, the second carcass, the lip portion and the bead rubber.

[0011] As a preferred scheme of the present application, the lower end of the reinforcing layer extends to the inside of the air-tight layer, and the reinforcing layer is made of a coated cord.

[0012] As a preferred scheme of the present application, the first carcass and the second carcass are selected to be semi-steel radial tires and are made of polyester material, and the upper end of the shaped rubber is bonded with the outside of the belt layer.

[0013] As a preferred scheme of the present application, the upper end of the elastic sheet is in an inverted octagonal shape, the lower end of the elastic sheet is in a "U" shape, and the metal hoop is located in the middle of the elastic sheet and is in contact with the elastic sheet.

[0014] As a preferred scheme of the present application, the bead wire is made of aramid fiber, and the tensile strength of the bead wire is not less than 1200MPa.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] Firstly, the present application sets the first carcass and the second carcass, and only the tread portion uses steel wires as the reinforcing layer, compared with the full steel tire, the carcass also uses steel wires to bear the force except the tread, the carcass material is rigid, which leads to the rigidity of the tire side, the comfort of the tire is poor, the two-layer semi-steel carcass design is adopted, which is lower in rigidity compared with the full steel tire and higher in strength compared with the single-layer semi-steel carcass, so as to guarantee the strength of the tire and be more comfortable.

[0017] Secondly, when the tire is extruded, a pressure will be applied to the elastic sheet, after the resistance of the metal hoop on both sides of the inner wall of the elastic sheet, the elastic sheet will be subjected to a thrust force to both sides, so that the force applied to the elastic sheet will act on the wear-resistant glue and the bead wire on both sides, so that the extrusion force of the tire will be released to both sides and buffered by the elastic force of the wear-resistant glue, thereby reducing the vibration of the vehicle.

[0018] Third, by setting bead wires, the present invention replaces steel wires with aramid fibers, which has the advantages of high strength, high rigidity and high temperature stability. At the same time, it has excellent tensile strength, elastic modulus, creep resistance and shock resistance. Its tensile strength is twice that of steel wire, while its rigidity is lower than that of steel wire. Thus, it can reduce the rigidity of the tire while ensuring the safety of the tire.

[0019] Other advantages, objectives and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from the practice of the invention. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 For the present invention Figure 1 A partial structural diagram;

[0022] Figure 3 This is a cross-sectional structural schematic diagram of the reinforcement component of the present invention;

[0023] Figure 4 This is a schematic diagram of the assembly structure of the elastic element and the metal hoop of the present invention;

[0024] Figure 5 This is a schematic diagram of the disassembly structure of the elastic sheet of the present invention;

[0025] Figure 6 This is a schematic diagram of the disassembly structure of the metal hoop of the present invention.

[0026] In the diagram: 1. Tire crown; 2. Tire sidewall rubber; 3. Tire bead; 4. Airtight layer; 5. First tire carcass; 6. Second tire carcass; 7. Belt layer; 8. Triangle rubber; 9. Reinforcing component; 91. Bead wire; 92. Abrasion-resistant rubber; 93. Elastic sheet; 94. Metal hoop; 10. Shaped rubber; 11. Reinforcing layer. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figures 1-6 As shown, the present invention provides an all-steel tire carcass structure for improving comfort, including a tire crown 1, and further comprising:

[0029] The tire body cushion structure is arranged on the tire crown 1 and is used to reduce the rigidity of the tire side;

[0030] The tire body cushion structure comprises the tire edge rubber 2 connected with the side of the tire crown 1, the lower part of the tire edge rubber 2 is connected with the tire lip part 3, the inner side of the tire lip part 3 is connected with the air-tight layer 4, the air-tight layer 4 is wrapped between the tire edge rubber 2, the first tire body 5 and the second tire body 6, the second tire body 6 is wrapped with the belt layer 7 between the tire crown 1, the first tire body 5 is adhered to the inner wall of the air-tight layer 4 and is curved upwardly to the tire edge rubber 2, the first tire body 5 is adhered to the second tire body 6, the part of the second tire body 6 curved upwardly is wrapped with the triangular rubber 8, the bottom of the triangular rubber 8 is wrapped with the reinforcing member 9, the tire crown 1 is adhered to the second tire body 6 through the type rubber 10, and the tire lip part 3 is adhered to the first tire body 5 through the reinforcing layer 11.

[0031] Through the design of the first tire body 5 and the second tire body 6, the steel wire is used as the reinforcing layer in the tread part of the semi-steel tire, and the nylon or polyester material is used in the tire body, compared with the full-steel tire, the steel wire is used in the tire body to bear the force except the tread, the rigidity of the tire body material is large, the rigidity of the tire side is large, and the comfort of the tire is poor, the two-layer semi-steel tire body design can reduce the rigidity of the tire and improve the comfort while ensuring the safety performance of the tire.

[0032] As shown in Figure 3 , 4 The reinforcing member 9 comprises the bead wire 91 connected through the wear-resistant rubber 92, the middle part of the wear-resistant rubber 92 is embedded with the elastic sheet 93 and the metal hoop 94, and the outer parts of the elastic sheet 93 and the metal hoop 94 are in contact with the second tire body 6.

[0033] Through the design of the bead wire 91, the advantages of high strength, high rigidity and high stability are achieved, when the tire is extruded after being fixed on the steel ring, a pressure is applied to the elastic sheet 93, after the resistance of the metal hoop 94 is applied to the two sides of the inner wall of the elastic sheet 93, the elastic sheet 93 is pushed to the two sides, so that the force applied to the elastic sheet 93 is applied to the wear-resistant rubber 92 and the bead wire 91 on the two sides, thus the extrusion force of the tire is released to the two sides and is buffered through the elastic force of the wear-resistant rubber 92, thereby the shock of the vehicle is reduced and the comfort is improved.

[0034] As shown in Figure 1 The belt layer 7 is made of three layers of steel wire cords, the steel wire cord comprises a plurality of groups of steel wires, the steel wire is made of “C82D2Cr steel wire” to twist a 0.30mm single wire to produce a 2x0.30UT steel wire cord.

[0035] Through the design of the belt 7, the work hardening effect of the C82D2Cr steel wire is better than that of the C82D2 steel wire, has the same level as the C86D2 steel wire, and the strand breakage rate of the C82D2Cr steel wire is lower than those of the other two steel wires, the Cr element alloying has a higher surface shrinkage, and improves the tensile strength of the copper-plated steel wire.

[0036] As shown in Figure 1 , the upper end point of the first carcass 5 is higher than that of the second carcass 6, forming an inverted package to the second carcass 6, and the triangular rubber 8 is bonded to the first carcass 5, the second carcass 6, the lip portion 3 and the bead rubber 2.

[0037] Through the design of the first carcass 5 and the second carcass 6, since the upper end point of the first carcass 5 is higher than that of the second carcass 6, the end portions of the first carcass 5 and the second carcass 6 are in a staggered state, so that the triangular rubber 8 can simultaneously bond the first carcass 5 and the second carcass 6, making the first carcass 5 and the second carcass 6 more stable.

[0038] As shown in Figure 1 , the lower end of the reinforcing layer 11 extends to the inside of the air tight layer 4, and the reinforcing layer 11 is made of a coated cord.

[0039] Through the design of the reinforcing layer 11, the second carcass 6 and the lip portion 3 can be bonded, and the lip portion 3 can be reinforced to prevent deformation of the lip portion 3, making the lip portion 3 more stable when mounted with the wheel rim.

[0040] As shown in Figure 1 , the first carcass 5 and the second carcass 6 are selected to be semi-steel radial tires and are made of polyester material, and the upper end of the shaped rubber 10 is bonded to the outer side of the belt 7.

[0041] Through the design of the shaped rubber 10, the connection between the crown 1 and the bead rubber 2 can be reinforced to prevent deformation, and the outer side of the belt 7 can be limited to make it more stable and not easily deviate left and right; through the design of the first carcass 5 and the second carcass 6, compared with setting a single semi-steel radial tire, the strength and safety are higher, and compared with a full-steel tire, the rigidity can be reduced to improve the comfort of the tire.

[0042] As shown in Figure 3 , 4 , the upper end of the elastic sheet 93 is inverted octagonal, the lower end of the elastic sheet 93 is "U" shaped, and the metal hoop 94 is located in the middle of the elastic sheet 93 and in contact with the elastic sheet 93.

[0043] Through the design of the elastic sheet 93, when the bottom of the elastic sheet 93 is extruded, a pressure will be generated between the elastic sheet 93 and the metal hoop 94, and due to the inverted octagonal shape of the upper end of the elastic sheet 93, the two ends of the top will exert a pushing force to the sides, which will be buffered by the elastic sheet 93 under the influence of the wear-resistant rubber 92.

[0044] As Figure 3 shown, the bead wire 91 is made of aramid fiber, and the tensile strength of the bead wire 91 is not less than 1200MPa.

[0045] Through the design of the bead wire 91, the aramid fiber has excellent tensile strength, elastic modulus, creep resistance and shock resistance, and its tensile strength is twice that of steel wire, while its rigidity is lower than that of steel wire, thereby reducing the rigidity of the tire while ensuring the safety of the tire.

[0046] Working principle:

[0047] By setting the first tire body 5 and the second tire body 6, two groups of semi-steel radial tires are used, which are lower in rigidity than full-steel tires and higher in strength than single-group two-group semi-steel radial tires, and by using the design of the bead wire 91, the original steel wire is replaced by aramid fiber, which has more excellent tensile strength, elastic modulus, creep resistance and shock resistance, and its tensile strength is twice that of steel wire, while its rigidity is lower than that of steel wire, which can improve the comfort of the tire. After the tire is fixed on the steel ring, when the tire is extruded, an elastic sheet 93 will be subjected to a pressure, and after the two sides of the inner wall of the elastic sheet 93 are subjected to the resistance of a metal hoop 94, the elastic sheet 93 will be subjected to a thrust force towards the two sides, so that the force on the elastic sheet 93 will act on the two sides of the wear-resistant rubber 92 and the bead wire 91. Therefore, the extrusion force of the tire will be released to the two sides and buffered by the elastic force of the wear-resistant rubber 92, thereby reducing the vibration of the vehicle.

[0048] Although embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A carcass structure for all-steel specification tyres for improved comfort, comprising a crown (1), characterised in that, Also includes: The carcass cushion structure is arranged on the crown (1) for reducing the rigidity of the side; Wherein, the carcass cushion structure includes the tire edge rubber (2), the lower part of the tire edge rubber (2) is connected with the tire lip part (3), the inner side of the tire lip part (3) is connected with the air tight layer (4), the air tight layer (4) and the tire edge rubber (2) are covered with the first carcass (5) and the second carcass (6), the second carcass (6) and the crown (1) are covered with the belt layer (7), the first carcass (5) is adhered to the inner wall of the air tight layer (4) and is curved upwardly towards the tire edge rubber (2), the first carcass (5) is adhered to the second carcass (6), the part of the second carcass (6) which is curved upwardly is covered with the triangular rubber (8), the bottom of the triangular rubber (8) is covered with the reinforcing member (9), the crown (1) and the second carcass (6) are adhered by the type rubber (10), the tire lip part (3) and the first carcass (5) are adhered by the reinforcing layer (11); The reinforcing member (9) includes the bead wire (91), the bead wire (91) is connected by the wear-resistant rubber (92), the middle part of the wear-resistant rubber (92) is embedded with the elastic sheet (93) and the metal hoop (94), the outer part of the elastic sheet (93) and the metal hoop (94) is in contact with the second carcass (6).

2. A total-steel specification tire carcass structure for improved comfort according to claim 1, characterized in that: The belt layer (7) is made of three layers of steel cord, which includes a plurality of groups of steel wires, the steel cord is made of "C82D2Cr steel wire" with a diameter of 0.30mm single wire twisted to produce 2x0.30UT steel cord.

3. A total-steel specification tire carcass structure for improved comfort according to claim 1, characterized in that: The upper end point of the first carcass (5) is higher than the upper end point of the second carcass (6) to form the reverse package to the second carcass (6), the triangular rubber (8) is adhered to the first carcass (5), the second carcass (6), the tire lip part (3) and the tire edge rubber (2).

4. A total-steel specification tire carcass structure for improved comfort according to claim 1, characterized in that: The lower end of the reinforcing layer (11) extends to the inside of the air tight layer (4), the reinforcing layer (11) is made of the rubber-coated cord.

5. A total-steel specification tire carcass structure for improved comfort according to claim 1, characterized in that: The first carcass (5) and the second carcass (6) are selected from the semi-steel radial tire and are made of polyester material, the upper end of the type rubber (10) is adhered to the outer side of the belt layer (7).

6. A total-steel specification tire carcass structure for improved comfort according to claim 1, characterized in that: The upper end of the elastic sheet (93) is inverted octagonal, the lower end of the elastic sheet (93) is "U" shaped, the metal hoop (94) is located in the middle part of the elastic sheet (93) and is in contact with the elastic sheet (93).

7. A total-steel tire carcass structure for improved comfort according to claim 1, characterized in that: The bead wire (91) is made of aramid fiber, the tensile strength of the bead wire (91) is not less than 1200MPa.

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