987 results about "Tire bead" patented technology

The invention relates to the technical field of rust-proof treatment of metal products, in particular to a rust-proof discoloration-proof packaging system and method for a bronze-plated tire bead wire. The system sequentially comprises a cleaning unit, a surface treatment unit, a drying box, a film coating device, a cooling unit, a post-treatment unit, a take-up device and a packaging system according to the process. The core of the process method is as follows: the steel wire is immediately coated with a special antirust film coating agent to be cured by using waste heat generated after the steel wire is dried, and the film coating agent comprises water-based resin, a silane coupling agent, a conductive polymer, a nano filler and benzotriazole; during packaging, an intelligent packaging system with a built-in humidity response humidity control bag is adopted, and the humidity control bag can automatically release inert gas and a moisture absorbent when the environment humidity reaches a preset threshold value. Multiple synergistic protection on the surface of the steel wire is achieved, the anti-rust period is remarkably prolonged to 12 months or above through dynamic humidity control, meanwhile, the bonding performance and the retention rate of the steel wire and rubber are improved, and energy conservation and environment protection are achieved.

A wireless power reception system includes a power transmission device, a power reception device, a wheel with a rim, and a tire mounted on the rim. The tire includes a bead core and a bead filler, a tire width direction cross-sectional area S1 of the bead filler is one to eight times a tire width direction cross-sectional area S2 of the bead core, the power transmission device can transmit electric power with a frequency of 1000 kHz or less wirelessly, the power reception device is disposed farther inward in the tire radial direction than a tread portion of the tire, the power reception device receives the electric power wirelessly from the power transmission device in a state such that the power transmission device is located farther outward in the tire radial direction than the tire, and the tread portion of the tire is formed from a non-magnetic material.

The utility model discloses a tire bead ring strength inspection device which comprises a bottom plate, a vertical plate arranged on the bottom plate, a supporting plate arranged on one side of the vertical plate, a motor arranged on the supporting plate, a worm connected to the output end of the motor, a worm gear meshed with the worm, a connecting shaft rotatably mounted in the vertical plate, one end of the connecting shaft connected with the worm gear, and the other end of the connecting shaft connected with the worm gear. The motor drives the worm to rotate, the connecting shaft drives the rotating disc to rotate slowly through meshing of the worm wheel, the arc-shaped grooves are matched with the sliding shafts, the sliding rods are far away from one another, and the same tire steel wire ring connected to the arc-shaped blocks in a sleeving mode is expanded. The motor drives the worm to rotate reversely, so that the plurality of sliding rods drive the arc-shaped blocks to get close to each other, the compression strength of the same tire steel wire ring located in the plurality of arc-shaped blocks can be inspected, and the functionality of the inspection device is greatly improved.

This invention relates to the field of tire barcode technology and discloses a non-intaglio type anti-counterfeiting and anti-tampering tire bead barcode, comprising a barcode information carrier layer, a vulcanized adhesive layer, and a release film connected in sequence; the barcode information carrier layer includes an integrally formed transparent layer and a carrier layer, with the barcode information disposed on the carrier layer. This invention avoids the problem of contaminants such as mud and dust affecting identification during use; the label surface is absolutely flat after vulcanization, eliminating any impact on the airtightness of the tire bead; it protects barcodes, text, numbers, and patterns; regardless of the tools used for fine polishing, the entire label body must be completely and severely damaged to render the label unreadable, and once the label body is severely damaged, the airtightness of the tire bead to the rim immediately fails, deterring malicious vandals.

To provide a tire for a heavy load 2 capable of suppressing generation of SFC that affects appearance quality while maintaining durability.SOLUTION: A tire 2 includes a pair of beads 10, a carcass 12, a pair of side walls 6, a pair of chafers 8, and a tag member 22 including an RFID tag 54. The carcass 12 includes a carcass ply 36. The carcass ply 36 includes a ply body 38 and a pair of folding part 40. A plurality of recesses 62 are provided in a side surface 26 of the tire 2 including the maximum width position PW of the tire 2. An end PF of the folding part 40 and the plurality of recesses 62 overlap a boundary BS of the side wall 6 and the chafers 8. A first recess 62a is the recess located in the radially outermost side among the plurality of recesses 62. The RFID tag 54 is located in the radially inside of the maximum width position PW and located in the radially outside of the first recess 62a.SELECTED DRAWING: Figure 1

The utility model relates to a flexible rim, a half-height rim hub and an assembly of the flexible rim and the half-height rim hub. The vertical edge structure of the flexible rim is provided with a special wall thickness and a convex inverted buckle structure, and can extend to a tire bead seat; the half-height rim is provided with a groove back-off and knurling structure; the flexible wheel flange and the hub assembly are matched in an inverted buckling mode and fixed through adhesive, the flexible wheel flange is made of specific components such as TPEE, and the material cost is low. The half-height rim is provided with the hollow structure through extrusion molding and then is welded into the closed ring, the production efficiency is high, and the production cost is low. According to the utility model, the reverse buckle is used for preventing falling off, increasing friction, buffering impact through a hollow structure, protecting the rim through a specific material, and ensuring braking safety through knurling; the flexible rim is good in color and luster, good in texture and more beautiful in appearance; meanwhile, after the tire is inflated, the assembly meets the GB / T 3487 boundary dimension standard, and popularization is convenient.

The invention discloses a process for producing a tire bead wire by using a 70 # steel wire rod, the 70 # steel wire rod is used as a raw material, and the 70 # steel wire rod comprises the following components in percentage by mass: 0.70-0.72% of C, 0.20-0.22% of Si, 0.50-0.55% of Mn, less than or equal to 0.015% of P, less than or equal to 0.015% of S, less than or equal to 0.03% of Cr, less than or equal to 0.03% of Ni, less than or equal to 0.04% of Cu and the balance of Fe and inevitable impurities. The 70 # steel wire rod is used for replacing commonly-used 77A and C72DA tire bead grade wire rods, the application grade and cost of wire rod raw materials are reduced, the content of manganese and silicon elements is increased, the hardness and hardenability of the steel wire are enhanced, and the hot working performance of the steel wire is improved; meanwhile, the organization structure of the steel wire material is innovatively improved through the tempering process, it is guaranteed that the steel wire rod with the low application grade obtains high strength and toughness, and the key indexes such as the breaking force, the yield ratio and torsion of the steel wire rod are improved. While the strength requirement of the automobile tire is met, the process difficulty of raw material production is reduced, the energy consumption is saved from the source, and the emission of three wastes is reduced.

The invention relates to a tire bead ring producing, machining and straightening device and method, and belongs to the technical field of tire producing and machining equipment.The tire bead ring producing, machining and straightening device comprises a main body rack, and a guide rail and a mounting base plane are arranged on the main body rack; the pretreatment module is installed at the feeding end of the main body rack, and the pretreatment module comprises a clamping device used for clamping a steel wire ring and a feeding roller driven by a servo motor; the straightening module is installed on the installation base face of the main body rack and located on the downstream of the pretreatment module, and the straightening module comprises a primary straightening wheel set and a dynamic compensation straightening wheel; the detection module comprises a first visual detection station and a second visual detection station which are fixed to the main body rack, the first visual detection station is located between the preprocessing module and the straightening module, and the second visual detection station is located behind the straightening module.

A two-wheeled vehicle pneumatic tire having a tread, a tire carcass, tire sidewalls, and two bead regions with a bead protective strip. The tire carcass is formed from a first carcass inlay and a second carcass inlay. The second carcass inlay is arranged radially inwardly of the first carcass inlay, and extends from a crown region (17) of the two-wheeled vehicle pneumatic tire and terminates at a second carcass inlay end under the bead protective strip. The two-wheeled vehicle pneumatic tire provides improved puncture protection whilst maintaining good rolling resistance. This is achieved in that the first carcass inlay is guided with a first carcass inlay turn-up over the particular tire sidewall as far as under the tread to a first carcass inlay end, and terminates there at the first carcass inlay end.

The invention discloses a low-rolling-resistance and high-abrasion truck radial tire, and relates to the technical field of tire design, the truck radial tire comprises a tire body, a tread, a tire body, a sidewall, a tire bead, a belted layer, a steel wire ring and apex, the relation of the outer contour of the tire body is h / D > = 1.2% and < = 5.2%, the radial height difference between the end point of the outer contour of the tread and the middle point of the outer contour of the tread is h, and the width of the tire body is 0.5 mm. The vertical distance from the widest end point position in the belted layer to the grounding contour is D, the relationship of the inner contour of the tire body is (Gs-h) / Gc is greater than or equal to 0.98 and less than or equal to 1.02, the vertical distance from the end point of the outer contour of the tread to the inner contour is Gs, and the vertical distance from the midpoint of the outer contour of the tread to the inner contour is Gc. The design scheme of the low-rolling-resistance and high-abrasion truck radial tire is obtained by starting from key design elements of the tire and considering the relation between the rolling resistance and the abrasion of the tire, more fuel oil can be saved, and the abrasion mileage is longer.

A vehicle including a frame that includes a first longitudinally extending rail and a second longitudinally extending rail, wherein one of the first longitudinally extending rail and the second longitudinally extending rail includes a component mounted thereto. The first and second longitudinally extending rails each include a bead pattern that limits deformation of the respective rail during a frontal impact to the vehicle, and the bead pattern of the one of the first longitudinally extending rail and the second longitudinally extending that includes the component mounted thereto is different from the bead pattern of the other of the first longitudinally extending rail and the second longitudinally extending rail that does not have the component mounted thereto to limit an amount of deformation thereof during the frontal impact to the vehicle to minimize movement of the component in a direction toward a high-voltage component attached to the one rail.

The invention provides a wire rod for a short-process high-strength tire bead steel wire and a production method of the wire rod. The wire rod comprises the following components in percentage by weight: 0.05%-0.12% of [C], 0.08%-0.15% of [Si], 0.40%-0.55% of [Mn], 0.0050%-0.015% of [P], 0.0040%-0.015% of [S], 0.0020%-0.0040% of [N], 0.0010%-0.0025% of total oxygen, 0.0005%-0.0020% of [Als], 0.01%-0.05% of [Cr], 0.0003%-0.0010% of [V] and 0.00005%-0.0004% of [Se]. And the balance of Fe and inevitable impurities. The production method comprises the steps of smelting, continuous casting, heating, wire rod rolling and wire rod cooling. According to the wire rod produced through the method, the tensile strength of the wire rod ranges from 410 MPa to 450 MPa, the area reduction rate ranges from 65% to 70%, the surface crack depth is not larger than 0.1 mm, and the requirement of a user in the drawing process is met; the continuous rolling procedure with high cost is removed, the production cost of the wire rod is reduced, the wire rod has high market competitiveness, and the high-quality and low-cost wire rod is provided for a user.

The utility model relates to the technical field of tire design, and particularly discloses a reinforced tire bead structure of a light truck tire, which is used for solving the problem of poor performance of a tire structure in the prior art. Comprising a lining, a carcass ply is attached to the outer side of the lining, hard bead filler corresponding to a steel wire ring is arranged on the outer side of the carcass ply, soft bead filler extending upwards is arranged on the outer side of the hard bead filler, the bottom of the carcass ply bypasses the steel wire ring and extends upwards to form a wrapping structure, and the outer end of the carcass ply is a carcass ply end point. According to the utility model, the structural form and material distribution of the tire bead part are innovatively designed, so that the durability of the tire bead part is improved; compared with the prior art, by applying the novel seam allowance reinforcing steel wire structure and the special rubber, changing the difference level between the tire body and the seam allowance reinforcing steel wires, isolating the end points of all steel wire components and the like, the deformation resistance of the tire bead position is improved, the damage to the tire bead caused by the stress concentration of the tire body turn-up end points is eliminated, and the overall durability of the tire bead position is improved.

The invention discloses a tire defect detection method and device and a computer readable storage medium, and relates to the technical field of tire defect detection.The method comprises the steps that image information of a tire is collected based on visual inspection, and surface defect information of the tire is recognized according to the image information; acquiring a tire reflection wave when the high-frequency sound wave penetrates through the tire body of the tire, and identifying internal structure defect information of the tire according to the tire reflection wave; acquiring an eddy current signal of the tire based on an electromagnetic induction technology, and identifying surface or near-surface defect information of a tire bead and a cord fabric layer of the tire according to the eddy current signal; and determining a defect detection result of the tire according to the surface defect information, the internal structure defect information and the surface or near-surface defect information of the tire bead and the cord fabric of the tire. Therefore, the method combines the visual detection result, the reflected wave recognition result and the logistics change recognition result to complete tire defect detection, and the detection comprehensiveness and accuracy are improved.

The invention relates to the field of tires, and provides a degradable material reinforced environment-friendly tire, which comprises a tire main body, the tire main body at least comprises a tread, a sidewall, a cord fabric layer and a tire bead, the tread contains a degradable rubber material, and the degradable rubber material accounts for 20-50% of the total mass of the tread; the degradable rubber material contains polycaprolactone modified natural rubber accounting for 10%-30% of the total mass and is prepared by adopting a dynamic vulcanization process, dicumyl peroxide serves as a vulcanizing agent, the addition amount of dicumyl peroxide is 0.5%-1.5%, the vulcanization temperature is 140-160 DEG C, the vulcanization time is 8-15 minutes, and the number-average molecular weight of polycaprolactone is 10000-30000. The environment-friendly tire provided by the invention can be gradually decomposed in the natural environment, so that the pollution of the waste tire to the environment is effectively reduced, the problem that the traditional tire is difficult to degrade is solved, and the occupation of land resources and the risk of environmental pollution are greatly reduced.

The invention relates to the technical field of tire steel wire ring testing, and discloses a tire steel wire ring strength testing device which comprises a base, a testing unit, two clamping units, two wire pressing units and two fixing units. The testing unit comprises a supporting frame fixedly installed on the top face of the base, two testing air cylinders are symmetrically and fixedly installed on the supporting frame, and supports are fixedly installed at the telescopic ends of the testing air cylinders. The clamping grooves with different inner diameters are designed to adapt to steel wires with different diameters, the rotating plates on the clamping plates are driven by the attraction magnetic force between the magnetic sheets to clamp and fix the steel wires, the steel wires with different specifications are rapidly and stably clamped, and due to the design, the working efficiency is improved, and the labor intensity of workers is reduced. And it is also ensured that in the steel wire testing and feeding process, a worker only needs to place the steel wire on the two clamping plates, feeding can be completed, the transferring plates and the clamping plates are automatically separated in the strength testing process, strength testing is facilitated, and the influence on the accuracy of the strength testing is avoided.

The present invention provides a heat treatment device for high-yield-strength ratio tire bead wire, comprising a heat treatment support group and a heat treatment assembly. A base is provided on one side of the heat treatment support group, a pair of horizontally arranged cross frames are connected to the top of the base, and a heat treatment assembly is provided between the pair of cross frames. The present invention uses a heating roller to transport the steel wire. After the external electric heating plate at the top of the inner cavity of the upper heating cover is powered on, the steel wire transported into the top of the inner cavity of the heat treatment assembly is heated. The electric heating controller controls the internal electric heating plate to perform heating, thereby increasing the temperature of the heating roller body and providing auxiliary heating for the transported steel wire, thereby improving the heating efficiency of the steel wire. When the steel wire is transported to the bottom of the heating roller, it is immersed in the quenching liquid filled in the inner cavity of the lower heating cover for quenching treatment, thereby greatly improving the practicality of the heat treatment.

A pneumatic tire includes a tread portion, a pair of sidewall portions, a pair of bead portions, a carcass extending between the pair of bead portions, and an inner rubber extending between the pair of bead portions on an inner side of the carcass. The inner rubber includes a first portion extending in the tread portion with a first thickness and a second portion extending in each of or one of the pair of sidewall portions with a second thickness. The first thickness is greater than the second thickness. In a tire meridian cross-section, a cross-sectional area of the inner rubber is in a range from 1.5% to 10% of an inner-cavity cross-sectional area of the pneumatic tire.

The utility model relates to the field of tire structures, and discloses a winter tire with a discontinuous winding cap ply, the tire comprises a tread, a winding cap ply, a belted layer, a tire body, a sidewall and a tire bead, the belted layer is attached on the tire body, the winding cap ply is arranged on the belted layer, the cap tension of the winding cap ply adopts a segmented control design, and the width of the winding cap ply is smaller than that of the tire bead. The winding cap ply is formed by spirally winding a single nylon strip from a first shoulder part of the tire to a second shoulder part of the tire, the winding cap ply of the tire crown part is spirally wound at intervals, and the interval between every two circles of wound cap plies is 1-3mm. Due to the design of the winding cap ply provided by the utility model, segmented control of the tension of the cap ply is realized, the problem of uneven abrasion of the winter tire under high-speed driving or complex road conditions is avoided, the durability, the grip performance, the control performance, the bearing capacity, the safety and the comfort of the winter tire are improved, and the service life of the winter tire is prolonged; the weight of the tire in winter is reduced, and the cost for winding the cap ply is reduced.

To provide a pneumatic tire of which durability is improved and weight saving can be achieved.SOLUTION: In a pneumatic tire 10, a carcass ply 1 of one or more layers, in which cut cords are arranged in parallel, is toroidally arranged, and one or more belt layers 2, in which the cut cords are arranged in parallel, are arranged on a tire radial direction outer side of a crown part of the carcass ply 1. In the pneumatic tire 10, an auxiliary reinforcement layer 4 containing a copolymer having a conjugated diene unit and a non-conjugated olefin unit is arranged adjacent to the vicinity of a cord cut end of at least one layer of the carcass ply 1 and the belt layer 2 or the vicinity a tire width direction outer side end of a chafer located outside the carcass ply 1 in a bead part 5.SELECTED DRAWING: Figure 1

The invention provides a forming machine. The forming machine comprises a belt drum device provided with a belt drum and a tread feeding frame for conveying materials to the belt drum. The tread transfer ring is movably arranged on the sliding rail; the forming drum device is provided with a rotatable forming drum, and the forming drum is provided with an inflatable capsule; the tire body feeding frame is used for conveying materials to the forming drum, and the rolling device is arranged opposite to the forming drum; the tire bead presetting device is used for providing a tire bead; the two groups of tire body end part shrinking mechanisms, the two groups of ring buckling devices and the two groups of capsule boosting devices are movably arranged on the sliding rails, and the two groups of tire body end part shrinking mechanisms, the two groups of ring buckling devices and the two groups of capsule boosting devices are respectively arranged at the two ends of the forming drum. The one-step forming production of the tire is realized mainly through a newly designed forming machine, and the forming machine can be suitable for the production of tires with any crown height, and has the advantages of wide application range and high production efficiency.

The invention relates to a tire bead ring multidirectional pre-deformation device and method, and belongs to the technical field of intelligent manufacturing, and the tire bead ring multidirectional pre-deformation device comprises a digital twin system which is used for processing data and planning a control instruction; the annular sectional type electromagnetic deformation chamber is used for performing multidirectional deformation on the steel wire ring; the sensor array is used for monitoring the state of the steel wire ring in real time and transmitting data to the digital twin system; the non-magnetic supporting and positioning mechanism is arranged in the center of the annular sectional type electromagnetic deformation chamber and is used for placing the steel wire ring; and the controller is connected with the digital twin system, the annular sectional type electromagnetic deformation chamber and the sensor array to control the work of the digital twin system, the annular sectional type electromagnetic deformation chamber and the sensor array, the influence of material difference on the product precision is eliminated, and the rejection rate is remarkably reduced.

The invention discloses a process for producing a tire bead wire by using a 80 # steel wire rod, the 80 # steel wire rod is used as a raw material, and the wire rod comprises the following components in percentage by mass: 0.80-0.82% of C, 0.17-0.20% of Si, 0.45-0.50% of Mn, less than or equal to 0.015% of P, less than or equal to 0.015% of S, less than or equal to 0.03% of Cr, less than or equal to 0.03% of Ni, less than or equal to 0.04% of Cu and the balance of Fe and inevitable impurities. Compared with the prior art, in the production of the tire bead steel wire, the 80 # steel wire rod is used as a raw material, the cost is reduced on the premise of meeting customer requirements, the 80 # steel wire rod is lower in cost compared with a tire bead grade special wire rod (C82DA), the content of manganese and silicon elements is increased, and the heat treatment performance of the tire bead steel wire is remarkably improved; the drawing pass changes along with the specification of a product, the temperature in a plating solution in the chemical plating procedure, the concentration of Cu < 2 + > / Sn < 2 + >, the take-up speed, the tempering temperature and other procedures are adaptively adjusted, the drawing resistance is reduced, the diffusion efficiency of a plating layer is improved, meanwhile, the hot brittleness of the steel wire is eliminated, the toughness and strength of the steel wire are improved, and the energy consumption is reduced under the optimal production condition.

The purpose of the present invention is to provide a stabilizer which can be separated from a tire and reused, while achieving both performance derived from tire rigidity and riding comfort performance. The stabilizer is housed in a tire cavity, and includes: a pair of bead-corresponding members (12, 12) located at respective ends in the width direction and extending in the circumferential direction; a plurality of side surface corresponding members (14) extending radially outward from radially outer end portions of the pair of bead corresponding members, the radially outer end portions of the side surface corresponding members being curved inward in the width direction; a tread corresponding member (16) connected to the radially outer ends of the plurality of side surface corresponding members located on each side of the equatorial plane; and a plurality of circumferential reinforcement bodies (18) located radially outward of the tread counterpart members, at least the circumferential reinforcement bodies comprising rigidity variable members.

A pneumatic tire is disclosed. The disclosed pneumatic tire comprises a tread having a plurality of blocks partitioned by means of first to fourth main grooves which are formed in the circumferential direction of the tire and are spaced part from each other with respect to the width direction of the tire from the inner side to the outer side thereof, thereby making contact with a road surface, wherein the tread includes an inside shoulder block, an inside middle block, a center block, an outside middle block and an outside shoulder block, which are partitioned with respect to the width direction of the tread from the inner side to the outer side thereof, the inside middle block, the center block and the outside middle block have first kerfs recessed in the depth direction from the surfaces thereof, and the inside shoulder block and the outside shoulder block have second kerfs which are recessed in the depth direction from the surfaces thereof and which have dome kerf parts provided in the middle portions thereof, the dome kerf part including a convex protrusion that convexly protrudes from one wall surface and a concave groove which is recessed from the other wall surface opposite to the one wall surface and in which the convex protrusion is inserted and accommodated.

Described herein is a process for mounting a tire onto a wheel. The process comprises positioning the tire in respect to the wheel such that a first arc of the bottom bead extends between the wheel's top and bottom bead seats. Next, two fingers are placed in contact with the bottom bead at locations immediately adjacent to opposing ends of the first are of the bottom bead. The first finger rotates about the central axis in a rotational direction away from the first arc of the bottom bead while applying a force in a direction of the bottom bead to advance all of the bottom bead below the top bead seat. These steps are repeated with the top bead to advance all of the top bead below the top bead seat. During the process, the first finger and the second finger may not contact any portion of the wheel

The light-weight tire comprises a tire bead area, a tire side area, a tire body layer, a belted layer and a tire crown area which are distributed from inside to outside, the tire bead area is provided with a steel wire ring, bead filler wrapping the steel wire ring, a tire bead filling rubber strip covering the outer side of the bead filler, a wear-resistant rubber strip wrapping the exterior of a tire bead, and a tire chafer, the tire sidewall area comprises a tire sidewall and steel wire wrapping cloth at the edge of the tire sidewall, the tire body layer penetrates through the whole tire, the tire body layer comprises a tire body, and a lining layer is arranged on the inner side of the tire body layer. Through a series of structural design and process optimization measures, the self weight of the tire is reduced, and meanwhile, the driving performance and the safety of the tire are ensured not to be influenced.

The application discloses a light truck tire with a light-weighted bead structure and relates to the field of all-steel tires. The bead part comprises a tire body, a steel wire ring, lower triangular rubber, upper triangular rubber and wear-resistant rubber. The outer end point of the wear-resistant rubber is higher than the upper end point of the upper triangular rubber. The ratio of the height of the outer end point of the wear-resistant rubber to the height of the tire section is in the range of 0.23-0.53. The ratio of the height of the upper end point of the upper triangular rubber to the height of the tire section is in the range of 0.20-0.50. The outer end point of the wear-resistant rubber is higher than the upper end point of the upper triangular rubber, so that the thickness of the triangular rubber and the height of the triangular rubber are further reduced, the thickness of the bead is reduced, and stress concentration of the end points of the components of the bead part caused by the small difference level is avoided.

The invention relates to a vehicle pneumatic tire comprising a tread, a carcass (2) with a carcass ply (2a) with carcass reinforcement carriers and a coil bandage with a coil bandage reinforcement carrier, wherein each carcass ply (2a) runs between bead areas (4), wherein a bead core (5) is arranged in each bead area (4) and each carcass ply (2a) is folded over the bead cores (5) so that a carcass fold (2f) is formed. According to the invention, it is provided that - in the carcass (2) a carcass reinforcement carrier (2b) made of a metallic material runs, - the bead core (5) has a teardrop-shaped cross-section and no apex is arranged radially above the bead core (5) between the bead core (5) and the carcass layer (2a), - the carcass high-profile cut (2f) runs radially below the sidewall (3), and - the vehicle tire has a load index in the range of 71 to 126.