A hierarchical adaptive in-tire support device based on pressure rate of change triggering

Abstract

This invention relates to the field of tire technology, and more particularly to a graded adaptive tire inner support device based on pressure change rate triggering, comprising: a wheel hub, with a plurality of inner support bodies arranged in a circumferential array on the outer circumference of the wheel hub and located in the inner cavity of the tire; each inner support body includes: a base, a radial center support assembly, and a scissor support assembly, the base being fixedly installed on one side of the outer circumferential surface of the wheel hub, the radial center support assembly being installed at the end of the base away from the wheel hub, and two sets of scissor support assemblies being arranged between the radial center support assembly and the base. When the tire slowly leaks air, the two sets of scissor support assemblies in each inner support body slowly unfold and approach the radial inner wall of the tire as the tire pressure changes; when the tire experiences a momentary blowout, the two sets of scissor support assemblies in each inner support body rapidly and fully unfold and rigidly press against the radial inner wall of the tire. This invention provides an adaptive tire inner support device that can improve driving safety.

Description

Technical Field

[0001] This invention relates to the field of tire technology, and in particular to a graded adaptive tire internal support device based on pressure rate triggering. Background Technology

[0002] Tire blowouts are a major cause of serious traffic accidents at high speeds. To improve vehicle safety under conditions of tire deflation, current technologies often involve installing rigid support rings around the wheel rim. When a tire blows out and pressure is lost, the rim is supported by the support rings to prevent the tire sidewalls from being crushed, thus maintaining the vehicle's directional control.

[0003] To address the risk of tire blowouts at high speeds, tires with internal support structures are a primary passive safety measure. However, existing internal support structures suffer from the following mechanical-related drawbacks in practical applications: Most existing internal support structures are rigid rings with a fixed diameter. To avoid interfering with the radial deformation of the tire during normal driving, their radius is typically designed to be small. This results in a massive drop impact on the vehicle at the moment of a blowout; furthermore, insufficient support height during depressurization leads to an excessively low chassis, affecting ground clearance.

[0004] Tire pressure loss can be categorized into "slow leaks" and "instantaneous blowouts." In a slow leak, the air pressure decreases gradually; if the support mechanism were to suddenly and completely deploy, it would cause unnecessary and violent vibrations. In an instantaneous blowout, the air pressure is lost in a very short time; if the mechanism responds too slowly, it cannot establish effective support before the vehicle becomes unbalanced.

[0005] Existing internal support structures cannot automatically distinguish between these two physical processes, resulting in overly rigid support feedback. An ideal internal support structure should have a large support area during operation to reduce tread wear, and a very small volume when not in operation to reduce unsprung mass. Traditional linkage mechanisms often struggle to achieve a large stroke transition from "fully closed" to "maximally extended" within the confined space of the wheel hub. Summary of the Invention

[0006] The purpose of this invention is to provide a graded adaptive tire internal support device based on compressive stress rate triggering, so as to solve the technical problems existing in the background art.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows: A graded adaptive tire inner support device based on pressure rate triggering includes: a wheel hub and a tire, the tire being mounted on the wheel hub, and a plurality of inner support bodies arranged in a circumferential array on the outer circumference of the wheel hub and located within the tire cavity; each inner support body includes: a base, a radial center support assembly, and a scissor support assembly, the base being fixedly mounted on one side of the outer circumferential surface of the wheel hub, the radial center support assembly being mounted on the end of the base away from the wheel hub, and two sets of scissor support assemblies being arranged between the radial center support assembly and the base, the two sets of scissor support assemblies being located on opposite sides of the tire cavity; when the tire pressure is normal, the two scissor support assemblies in each inner support body are completely closed; when the tire slowly leaks air, the two sets of scissor support assemblies in each inner support body slowly expand and approach the radial inner wall of the tire as the tire pressure changes; when the tire experiences a momentary blowout, the two sets of scissor support assemblies in each inner support body rapidly and completely expand and rigidly press against the radial inner wall of the tire.

[0008] Furthermore, the radial center support assembly includes: a radial guide sleeve, a spring, and a radial support block. The radial guide sleeve passes through the wheel hub radially and is fixedly connected to the center of the base. One end of the radial support block is radially and slidably connected to the radial guide sleeve. The spring is disposed within the radial guide sleeve, with its two ends respectively abutting the outer circumferential surface of the wheel hub and the end of the radial support block facing the wheel hub. When the tire pressure is normal, the spring is in a compressed state. When the tire pressure is normal, during a slow tire leak, or after a momentary tire blowout, the end of the radial support block facing the wheel hub always maintains a radially sealed sliding connection with the radial guide sleeve. The radial support block is provided with a drive assembly for driving the deployment of its corresponding two sets of scissor support assemblies.

[0009] Furthermore, the drive assembly includes: a second cylinder and a linkage guide pin. The radial support block has a strip-shaped sliding hole that extends tangentially along the hub. The fixed end of the second cylinder is fixedly installed in the strip-shaped sliding hole at one end close to the hub. The telescopic end of the second cylinder is fixedly installed with a linkage guide pin. The main body of the linkage guide pin is rectangular and slides radially along the hub within the strip-shaped sliding hole. The axial ends of the linkage guide pin are circular and extend out of the two ends of the strip-shaped sliding hole.

[0010] Furthermore, the scissor support assembly includes: a first connecting rod, a third rotating shaft, a strip-shaped support block, a second rotating shaft, an L-shaped support block, and a first rotating shaft. Two first connecting rods are symmetrically arranged, with one end of each connecting rod rotatably connected to the axial ends of a linkage guide pin. The other ends of the two first connecting rods are rotatably connected to one end of a strip-shaped support block on the outer side of the radial support block via the third rotating shaft. The other end of the strip-shaped support block is rotatably connected to one end of an L-shaped support block via the second rotating shaft. The other end of the L-shaped support block is rotatably connected to the end of the base near the tire sidewall via the first rotating shaft. The L-shaped support block and the strip-shaped support block form a J-shaped support structure.

[0011] Furthermore, two sets of anti-reverse limiting clips are provided on the two side walls of the strip-shaped sliding hole, with two clips symmetrically arranged in each set; the anti-reverse limiting clip includes: a right-angled trapezoidal clip and a spring three. Two sets of rectangular grooves are symmetrically opened on the two side walls of the strip-shaped sliding hole, with two clips symmetrically arranged in each set. The right-angled trapezoidal clip is slidably connected in the corresponding rectangular groove. The spring three is set in the rectangular groove, and its two ends are respectively fixedly connected to the side of the right-angled trapezoidal clip opposite to the inclined surface and the side of the rectangular groove perpendicular to the wheel hub axis. When the spring three... When fully compressed, the direct trapezoidal block is fully embedded in the rectangular groove; the inclined surface of the right-angled trapezoidal block extends into the strip-shaped sliding hole when the spring is not compressed. In the two right-angled trapezoidal blocks in the same group, the distance between the two inclined surfaces near the hub is greater than the distance between the two inclined surfaces away from the hub; after the tire blows out instantaneously, the linkage guide pin moves to the end of the strip-shaped sliding hole away from the hub, and the end of the linkage guide pin body near the hub presses against the ends of the two right-angled trapezoidal blocks away from the hub.

[0012] Furthermore, the radial support block and the two strip-shaped support blocks have two symmetrically formed strip-shaped inner grooves on their opposite sides. The end of the strip-shaped inner groove away from the wheel hub has an arc-shaped slot. The end of the strip-shaped support block near the wheel hub is arc-shaped. The end of the strip-shaped support block near the wheel hub slides in conjunction with the strip-shaped inner groove. After a sudden tire blowout, the end of the strip-shaped support block near the wheel hub engages with its corresponding arc-shaped slot.

[0013] Furthermore, it also includes: cylinder one and spring two. The base has a mounting hole that is perpendicular to the outer circumference of the hub and passes through it at one end near the two rotating shafts. Cylinder one is set in the mounting hole. The fixed end of cylinder one is fixedly installed on the outer circumference of the hub. The telescopic end of cylinder one is fixedly connected to one end of a pressure plate. The other end of the pressure plate is fixedly connected to one end of spring two. The other end of spring two is fixedly connected to one end of a corresponding L-shaped support block near the base.

[0014] Furthermore, it also includes: a TPMS sensor, which is embedded in the tire valve core for real-time detection of tire pressure; and an MCU within the TPMS sensor to control the extension and retraction of cylinder one and cylinder two respectively.

[0015] Furthermore, it also includes a locking assembly, which comprises a spring and a cylindrical locking pin. The base has two symmetrically arranged circular pin holes near the two rotating shafts connected to it. The L-shaped support block has a circular inner groove near one end of the base. The axes of the circular pin holes and the circular inner groove are both perpendicular to the axis of the wheel hub. One end of the spring is fixedly connected to the inner wall of the axial end of the circular inner groove, and the other end of the spring is fixedly connected to the axial end of the cylindrical locking pin. The cylindrical locking pin is axially slidably connected in the circular inner groove. When the spring is fully compressed, the cylindrical locking pin is completely embedded in the circular inner groove. When the scissor support assembly is fully extended, the cylindrical locking pin is slidably inserted into its corresponding circular pin hole.

[0016] Furthermore, the scissor support assembly also includes: a linkage assembly, a support head, cylindrical spur gears, and connecting rods. The support head and cylindrical spur gears are arranged in four sets, with two gears in each set. The four sets of support heads are respectively located on opposite sides of the L-shaped support block and on opposite sides of the strip support block. The four sets of cylindrical spur gears are respectively located on opposite sides of the L-shaped support block and on opposite sides of the strip support block. The support head is horn-shaped, and a cylindrical spur gear is fixedly connected to one end of the support head opposite to its tip. The two cylindrical spur gears in each set mesh with each other. Two sets of opposite cylindrical spur gears are rotatably mounted at the corners on opposite sides of the L-shaped support block, and the other two sets of opposite cylindrical spur gears are rotatably mounted on opposite sides of the strip support block near the L-shaped support block. Two connecting rods are symmetrically arranged, with one end of each connecting rod... Two cylindrical spur gears, respectively hinged to the outer axial end faces of the L-shaped support block and positioned opposite each other, are located near the L-shaped support block. The other ends of the two connecting rods are respectively hinged to the outer axial end faces of the two cylindrical spur gears, respectively hinged to the L-shaped support block and positioned opposite each other, are located near the outer axial end faces of the two cylindrical spur gears. After a tire blowout, the outwardly protruding arc-shaped outer walls of the two support heads in each group can abut against the inner wall of the tire. The linkage components are symmetrically arranged in two groups, each group of linkage components including: connecting rod four, connecting rod five, and connecting rod two. One end of connecting rod four and one end of connecting rod five are respectively hinged to the adjacent inner ends of the strip support block and the L-shaped support block. The other ends of connecting rod four, connecting rod five, and connecting rod two are hinged to each other. The other end of connecting rod two is hinged to the outer axial end face of the corresponding cylindrical spur gear on the side of the strip support block away from the L-shaped support block.

[0017] Compared with the prior art, the beneficial effects of the present invention are: I. This invention uses a TPMS sensor to accurately distinguish between two physical processes: "slow air leakage" and "instantaneous tire blowout." During a slow air leakage, the MCU in the TPMS sensor controls cylinders one and two to extend slowly, thereby driving the scissor support assembly to expand slightly and approach the inner wall of the tire, entering an adaptive warning support state. Its main purpose is to provide internal flexible support for the tire, preventing the wheel rim from directly crushing the tire tread and contacting the ground, thus effectively avoiding expensive wheel rim damage, extending the equipment's lifespan, and reducing maintenance costs. During an instantaneous tire blowout, the MCU in the TPMS sensor controls cylinders one and two to extend rapidly, thereby driving the scissor support assembly to quickly and fully unfold and rigidly press against the radial inner wall of the tire. The core significance of this design is that it immediately rebuilds the vehicle's dynamic balance support at the moment of the blowout, preventing serious safety accidents such as rollovers and skidding caused by loss of tire pressure, greatly improving driving safety under extreme conditions.

[0018] Second, the tire internal support device provided by the present invention can achieve a huge radial expansion stroke with a very small storage volume, ensuring rapid fit to the tire sidewall without interfering with normal driving; combined with the multi-point geometric self-locking after unfolding, it can withstand huge instantaneous impacts, realizing a smooth transition from elastic warning to rigid load-bearing, and significantly improving the handling stability under the pressure loss state. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the inner support body being installed entirely inside the tire under standard pressure conditions according to the present invention; Figure 2 This is a cross-sectional view of the inner support body being installed entirely inside the tire under air leakage conditions according to the present invention. Figure 3 This is a cross-sectional view of the inner support body being installed entirely inside the tire under the condition of a tire blowout. Figure 4 This is a front view of the inner support body being installed entirely inside the tire under standard pressure conditions according to the present invention; Figure 5 This is a front view of the inner support body being installed entirely inside the tire under the condition of a tire blowout, according to the present invention.

[0020] The labels in the attached diagram are as follows: 1-Hub, 2-Tire, 3-Base, 4-Radial guide sleeve, 5-Spring 1, 6-Radial support block, 601-Strip-shaped sliding hole, 602-Strip-shaped inner groove, 603-Arc-shaped slot, 7-Cylinder 2, 8-Linkage guide pin, 9-Connecting rod 1, 10-Shaft 3, 11-Strip-shaped support block, 12-Shaft 2, 13-L-shaped support block, 14-Shaft 1, 15-Anti-reverse limiter, 16-Cylinder 1, 17-Spring 2, 18-Positioning assembly, 19-Support head, 20-Spur gear, 21-Connecting rod 3, 22-Connecting rod 4, 23-Connecting rod 5, 24-Connecting rod 2. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] See Figures 1-5 As shown, a graded adaptive tire internal support device based on pressure rate triggering includes: a hub 1 and a tire 2. The tire 2 is mounted on the hub 1. Several internal support bodies are arranged in a circumferential array on the outer circumference of the hub 1 and located in the inner cavity of the tire 2. The internal support body includes: a base 3, a radial center support assembly, and a scissor support assembly. The base 3 is fixedly mounted on one side of the outer circumferential surface of the hub 1. The radial center support assembly is mounted on the end of the base 3 away from the hub 1. Two sets of scissor support assemblies are arranged between the radial center support assembly and the base 3. The two sets of scissor support assemblies are located on opposite sides of the inner cavity of the tire 2. When the tire 2 has normal air pressure, the two scissor support assemblies in each internal support body are completely closed. When the tire 2 slowly leaks air, the two sets of scissor support assemblies in each internal support body slowly expand and approach the radial inner wall of the tire 2 as the tire 2 air pressure changes. When the tire 2 experiences a momentary blowout, the two sets of scissor support assemblies in each internal support body quickly and completely expand and rigidly press against the radial inner wall of the tire 2.

[0023] The radial center support assembly includes: a radial guide sleeve 4, a spring 5, and a radial support block 6. The radial guide sleeve 4 passes radially through the hub 1 and is fixedly connected to the center of the base 3. One end of the radial support block 6 is slidably connected to the radial guide sleeve 4 along the radial direction of the hub 1. The spring 5 is disposed inside the radial guide sleeve 4, with its two ends abutting against the outer circumferential surface of the hub 1 and the end of the radial support block 6 facing the hub 1, respectively. When the tire 2 has normal air pressure, the air pressure inside the tire 2 is applied to the spring 5 through the radial support block 6, causing the spring 5 to be in a compressed state. At this time, the shortest distance between the end of the radial support block 6 near the hub 1 and the outer circumference of the hub 1 is L1. When there is a slow leak, the air pressure inside the tire 2 decreases slowly, and the pressure applied to the spring 5 gradually decreases. The spring 5 pushes the radial support block 6 to slowly move away from the hub 1. At this time, the radial... The shortest distance between the end of the support block 6 near the hub 1 and the outer circumference of the hub 1 is L2 (L2 slowly increases as the tire pressure decreases). When the tire 2 experiences a sudden blowout, the air pressure inside the tire 2 drops sharply. At this time, the pressure on the spring 5 from the air pressure inside the tire 2 also decreases sharply. The spring 5 quickly pushes the radial support block 6 away from the hub until the spring 5 stops pushing the radial support block 6. At this time, the shortest distance between the end of the radial support block 6 near the hub 1 and the outer circumference of the hub 1 is L3, where L3 > L2 > L1. When the tire 2 has normal air pressure, during the slow air leakage process of the tire 2, or after the tire 2 experiences a sudden blowout, the end of the radial support block 6 facing the hub 1 always maintains a radially sealed sliding connection with the radial guide sleeve 4. The radial support block 6 is equipped with a drive assembly for driving the two sets of scissor support assemblies corresponding to it to unfold.

[0024] The drive assembly includes: cylinder 2 7 and linkage guide pin 8. A strip-shaped sliding hole 601 is provided on the radial support block 6, which runs tangentially through the hub 1. The fixed end of cylinder 2 7 is fixedly installed in the strip-shaped sliding hole 601 at one end close to the hub 1. The telescopic end of cylinder 2 7 is fixedly installed with linkage guide pin 8. The main body of linkage guide pin 8 is rectangular and slides radially through the strip-shaped sliding hole 601. The axial ends of linkage guide pin 8 are circular and extend out of the two ends of the strip-shaped sliding hole 601. The tire internal support device also includes: a TPMS sensor. The TPMS sensor is embedded in the valve core of tire 2 for real-time detection of tire pressure. The MCU in the TPMS sensor controls the telescopic movement of cylinder 2 7. When tire 2 slowly leaks air or experiences a momentary tire blowout, the pressure sensor in the TPMS sensor transmits the detected air pressure data to the MCU. The MCU controls the slow or rapid extension of cylinder 2 7 based on the air pressure data, thereby driving the scissor support assembly to slowly or rapidly unfold through the linkage guide pin 8.

[0025] The scissor-type support assembly includes: connecting rod 1 (9), pivot shaft 3 (10), strip support block 11, pivot shaft 2 (12), L-shaped support block 13, and pivot shaft 14. Two connecting rods 1 (9) are symmetrically arranged. One end of each connecting rod 1 (9) is rotatably connected to the axial ends of the linkage guide pin 8. The other ends of the two connecting rods 1 (9) are rotatably connected to one end of the strip support block 11 on the outer side of the radial support block 6 via pivot shaft 3 (10). The other end of the strip support block 11 is rotatably connected to one end of the L-shaped support block 13 via pivot shaft 2 (12). The other end of the L-shaped support block 13 is rotatably connected to one end of the L-shaped support block 13 via pivot shaft 14. Connected to one end of the base 3 near the sidewall of the tire 2; the L-shaped support block 13 and the strip support block 11 form a J-shaped support structure; when the tire 2 slowly leaks air or experiences a sudden tire blowout, the cylinder 2 7 pushes the linkage guide pin 8 to move away from the wheel hub 1 along the strip sliding hole 601, and the linkage guide pin 8 pulls the strip support block 11 away from the wheel hub 1 through the connecting rod 9, thereby driving the L-shaped support block 13 to rotate along the rotating shaft 14, so that the L-shaped support block 13 moves closer to the inner sidewall of the tire, realizing the slow or rapid deployment of the scissor support assembly.

[0026] Two sets of anti-reverse limiting clips 15 are provided on the two side walls of the strip-shaped sliding hole 601, with two clips symmetrically arranged in each set. The anti-reverse limiting clip 15 includes a right-angled trapezoidal clip and a spring. Two sets of rectangular grooves are symmetrically opened on the two side walls of the strip-shaped sliding hole 601, with two clips symmetrically arranged in each set. The right-angled trapezoidal clip is slidably connected in the corresponding rectangular groove. The spring is set in the rectangular groove, and its two ends are respectively fixedly connected to the side of the right-angled trapezoidal clip opposite to the inclined surface and the side of the rectangular groove perpendicular to the axis of the wheel hub 1. When the spring is fully compressed, the right-angled trapezoidal clip is fully embedded in the rectangular groove. When the spring is not compressed, the inclined surface of the right-angled trapezoidal clip extends into the strip-shaped sliding hole 601. Within 1, in the same group of two right-angled trapezoidal blocks, the distance between the two inclined surfaces near the end of the wheel hub 1 is greater than the distance between the two inclined surfaces away from the wheel hub 1; after the tire 2 experiences an instantaneous blowout, the linkage guide pin 8 is displaced to the end of the strip-shaped sliding hole 601 away from the wheel hub 1, and the end of the main body of the linkage guide pin 8 near the wheel hub 1 is pressed into contact with the ends of the two right-angled trapezoidal blocks away from the wheel hub 1; the two anti-backslip limiters 15 at the end away from the wheel hub 1 can prevent the linkage guide pin 8 from slipping back; the other two anti-backslip limiters 15 are located in the middle of the strip-shaped sliding hole 601, and play a safety role when the two anti-backslip limiters 15 at the end away from the wheel hub 1 fail.

[0027] Two strip-shaped grooves 602 are symmetrically provided on the two sides opposite to the radial support block 6 and the two strip-shaped support blocks 11. The end of the strip-shaped groove 602 away from the wheel hub 1 is provided with an arc-shaped slot 603. The end of the strip-shaped support block 11 near the wheel hub 1 is arc-shaped. The end of the strip-shaped support block 11 near the wheel hub 1 slides in the strip-shaped groove 602. After the tire 2 experiences a momentary blowout, the end of the strip-shaped support block 11 near the wheel hub 1 is engaged in the corresponding arc-shaped slot 603.

[0028] The tire internal support device also includes: cylinder 16 and spring 17. The base 3 has a mounting hole that is perpendicular to the outer circumference of the hub 1 and passes through it. Cylinder 16 is installed in the mounting hole. The fixed end of cylinder 16 is fixedly installed on the outer circumference of the hub 1. The telescopic end of cylinder 16 is fixedly connected to one end of a pressure plate. The other end of the pressure plate is fixedly connected to one end of spring 17. The other end of spring 17 is fixedly connected to the corresponding L-shaped support block 13 near the base 3. The MCU in the TPMS sensor controls the telescopic movement of cylinder 16.

[0029] The tire internal support device also includes: a locking assembly 18, which includes: a spring four and a cylindrical pin. The base 3 has two circular pin holes symmetrically opened at both ends near the two rotating shafts 14 connected to it. The L-shaped support block 13 has a circular inner groove opened at one end near the base 3. The axis of the circular pin hole and the axis of the circular inner groove are both perpendicular to the axis of the wheel hub 1. One end of the spring four is fixedly connected to the inner wall of the axial end of the circular inner groove, and the other end of the spring four is fixedly connected to the axial end of the cylindrical pin. The cylindrical pin is axially slidably connected in the circular inner groove. When the spring four is fully compressed, the cylindrical pin is completely embedded in the circular inner groove. When the scissor support assembly is fully extended, the cylindrical pin is slidably inserted into the corresponding circular pin hole.

[0030] The scissor support assembly also includes: a linkage assembly, support heads 19, cylindrical spur gears 20, and connecting rods 21. Four sets of support heads 19 and cylindrical spur gears 20 are provided, with two gears in each set. The four sets of support heads 19 are respectively located on opposite sides of the L-shaped support block 13 and opposite sides of the strip support block 11. The four sets of cylindrical spur gears 20 are respectively located on opposite sides of the L-shaped support block 13 and opposite sides of the strip support block 11. The support head 19 is horn-shaped, with a cylindrical spur gear 20 fixedly connected to one end of the support head 19 opposite to its tip. The two cylindrical spur gears 20 in each set mesh with each other. Two sets of opposite cylindrical spur gears 20 are rotatably mounted at the corners of opposite sides of the L-shaped support block 13, and the other two sets of opposite cylindrical spur gears 20 are rotatably mounted on opposite sides of the strip support block 11 near the end of the L-shaped support block 13. Two connecting rods 21 are symmetrically arranged, with one end of each connecting rod 21 hinged to... On the strip support block 11, two cylindrical spur gears 20 are positioned opposite each other and close to the eccentric side of their axial outer end faces near the L-shaped support block 13. The other ends of two connecting rods 21 are respectively hinged to the eccentric side of the two cylindrical spur gears 20 positioned opposite each other and close to the axial outer end faces of their axial faces near the strip support block 11. After the tire 2 blows out, the outwardly protruding arcuate outer wall of the two support heads 19 in each group can abut against the inner wall of the tire 2. Two sets of linkage components are symmetrically arranged, each group connecting... The moving components all include: connecting rod 4 22, connecting rod 5 23 and connecting rod 2 24. One end of connecting rod 4 22 and one end of connecting rod 5 23 are respectively hinged to the adjacent inner ends of the strip support block 11 and the L-shaped support block 13. The other end of connecting rod 4 22, the other end of connecting rod 5 23 and one end of connecting rod 2 24 are hinged to each other. The other end of connecting rod 2 24 is hinged to the side of the strip support block 11 away from the L-shaped support block 13 and to the eccentric side of the corresponding cylindrical spur gear 20 axially outward end face. When tire 2 slowly leaks air or experiences a sudden blowout, the scissor support assembly deploys, causing the inner angle between adjacent ends of the strip support block 11 and the L-shaped support block 13 to gradually increase. During this process, the strip support block 11 and the L-shaped support block 13 pull the connecting rod 24 via connecting rod 4 22 and connecting rod 5 23, respectively. This, in turn, drives the first cylindrical spur gear 20 connected to the strip support block 11 to rotate via connecting rod 24. The second cylindrical spur gear 20 on the strip support block 11 meshes with the first cylindrical spur gear 20. Therefore, the second cylindrical spur gear... The rotation direction of the first cylindrical spur gear 20 is opposite to that of the second cylindrical spur gear 20; the second cylindrical spur gear 20 drives the third cylindrical spur gear 20 on the L-shaped support block 13 to rotate in the same direction as the first cylindrical spur gear 20 through the connecting rod 3 21. The fourth cylindrical spur gear 20 on the L-shaped support block 13 meshes with the third cylindrical spur gear 20. Therefore, the rotation direction of the fourth cylindrical spur gear 20 is opposite to that of the third cylindrical spur gear 20. When the tire 2 slowly leaks air or when a sudden tire blowout occurs, the two support heads 19 of each group rotate toward the inner wall of the tire 2.

[0031] Working principle: When tire 2 is under standard pressure, the high-pressure gas inside the tire acts on the end of the radial support block 6 furthest from the hub 1, keeping spring 5 compressed. At this time, one end of connecting rod 9 is hinged to the side of the linkage guide pin 8, and the other end is hinged to the strip support block 11. The radial support block 6 pulls the strip support block 11 towards the center of the base 3 through connecting rod 9. At the same time, the L-shaped support block 13 is connected to the base 3 through pivot 14, and the strip support block 11 and the L-shaped support block 13 are hinged through pivot 12. Under standard pressure, the end of the L-shaped support block 13 near the hub 1 is close to the base 3, and the strip support block 11 and the L-shaped support block 13 are in a J-shaped convergence state, so that all support heads 19 are in the lowest radial position. Figure 1 and Figure 5 As shown, the entire tire internal support device is in a retracted state, and its radial height is lower than the tire's normal deformation limit, so that all support heads 19 maintain a preset safety gap with the inner wall of the tire 2.

[0032] When tire 2 slowly leaks air, causing the tire pressure to gradually decrease, the pressure exerted by the air on spring 5 decreases accordingly. At this time, the upward thrust of spring 5 is partially released, pushing the radial support block 6 to shift slightly away from the wheel hub 1, ensuring uniform force on the circumference of the wheel hub 1 and restoring the vehicle's dynamic balance. Simultaneously, cylinder 16 extends and, through spring 2 17, pushes the L-shaped support block 13 outward around the pivot 14 to create a preset angle offset; cylinder 2 7 extends, causing the linkage guide pin to move along the strip-shaped sliding hole 601 away from the wheel hub 1, driving the strip-shaped support block 11 to expand outward synchronously through connecting rod 9; and through the linkage assembly, spur gear set, and connecting rod 3 21, all support heads 19 are driven to move towards the inner wall of tire 2. Under this condition, the tire internal support device is in a semi-open posture, with all support heads 19 in contact with or close to the inner wall of tire 2. Its core function is to provide initial radial load sharing, effectively preventing the wheel hub 1 from directly crushing the tire 2 and contacting the ground when driving with air leakage, thereby achieving flexible protection for the tire 2 and the wheel hub 1.

[0033] When tire 2 experiences a sudden tire blowout, causing a rapid drop in air pressure, the radial support block 6, under the full force of spring 5, rapidly pushes outward along the inner wall of the radial guide sleeve 4. The TPMS sensor instantly detects the pressure change and controls cylinders 16 and 7 to work. Cylinder 16 rapidly extends and pushes the L-shaped support block 13 around the pivot 14 to its maximum limit angle via spring 17, until the locking assembly 18 completes the locking limit. Cylinder 7 rapidly extends, causing the linkage guide pin to move along the strip-shaped sliding hole 601 away from the wheel hub 1, and drives the strip-shaped support block 11 to expand outward synchronously via connecting rod 9. At this time, several inner supports installed on the circumference of the wheel hub 1 achieve millisecond-level synchronous deployment response, ensuring that the wheel hub 1 is subjected to uniform force throughout the circumference and restoring the vehicle's dynamic balance.

[0034] During the deployment of the scissor-type support assembly, the included angle between adjacent ends of the strip support block 11 and the L-shaped support block 13 gradually increases. During this process, the strip support block 11 and the L-shaped support block 13 pull the connecting rod 24 via connecting rod 4 22 and connecting rod 5 23 respectively. This, in turn, drives the first cylindrical spur gear 20 connected to the strip support block 11 to rotate via connecting rod 24. The second cylindrical spur gear 20 on the strip support block 11 meshes with the first cylindrical spur gear 20. Therefore, the second cylindrical spur gear 20 and the first cylindrical spur gear... The rotation directions of 20 are opposite; the second cylindrical spur gear 20 drives the third cylindrical spur gear 20 on the L-shaped support block 13 to rotate in the same direction as the first cylindrical spur gear 20 through the connecting rod 3 21. The fourth cylindrical spur gear 20 on the L-shaped support block 13 meshes with the third cylindrical spur gear 20. Therefore, the rotation directions of the fourth cylindrical spur gear 20 and the third cylindrical spur gear 20 are opposite. When the tire 2 experiences an instantaneous blowout, all the support heads 19 rapidly rotate outward and press against the radial inner wall of the tire 2 in the direction close to the inner wall of the tire 2. At the moment when the inner support body is fully deployed, the linkage guide pin 8 is locked by two anti-reverse limiters 15 on the side away from the wheel hub 1; the end of the strip support block 11 near the wheel hub 1 is locked in the corresponding arc groove 603; the locking assembly 18 completes the locking limit; realizes the multi-point geometric self-locking of the inner support body; and prevents the scissor support assembly from retracting under pressure.

[0035] A rigid support structure, established synchronously by several internal support bodies, effectively transmits the load between the wheel hub 1 and the ground, enabling the vehicle to maintain a preset driving height even under zero pressure. This full-circumferential synchronous rigid locking prevents the vehicle from tilting, fishtailing, or overturning due to a tire blowout, greatly improving driving safety in extreme environments.

[0036] In the description of this invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent substitutions, and improvements made by those skilled in the art to the above embodiments without departing from the scope of the technical solution of the present invention, based on the technical essence of the present invention, shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A graded adaptive tire internal support device based on compressive stress rate triggering, comprising: A hub (1) and a tire (2), wherein the tire (2) is mounted on the hub (1), characterized in that a plurality of inner supports arranged in a circumferential array on the outer circumference of the hub (1) and located in the inner cavity of the tire (2); the inner supports include: a base (3), a radial center support assembly and a scissor support assembly, wherein the base (3) is fixedly mounted on one side of the outer circumferential surface of the hub (1), and the radial center support assembly is mounted on the end of the base (3) away from the hub (1), and the radial center support assembly is positioned between the base (3) and the base (3). Two sets of scissor support components are provided, which are located on opposite sides of the inner cavity of the tire (2). When the tire (2) has normal air pressure, the two scissor support components in each inner support body are completely closed. When the tire (2) leaks air slowly, the two sets of scissor support components in each inner support body slowly unfold and approach the radial inner wall of the tire (2) as the tire (2) air pressure changes. When the tire (2) experiences an instantaneous blowout, the two sets of scissor support components in each inner support body quickly and completely unfold and rigidly press against the radial inner wall of the tire (2).

2. The graded adaptive tire internal support device based on compressive stress rate triggering according to claim 1, characterized in that: The radial center support assembly includes: a radial guide sleeve (4), a spring (5), and a radial support block (6). The radial guide sleeve (4) passes through the hub (1) radially and is fixedly connected to the middle of the base (3). One end of the radial support block (6) is slidably connected to the radial guide sleeve (4) radially along the hub (1). The spring (5) is set inside the radial guide sleeve (4) and its two ends abut against the outer circumferential surface of the hub (1) and the end of the radial support block (6) facing the hub (1), respectively. When the tire (2) has normal air pressure, the spring (5) is in a compressed state. When the tire (2) has normal air pressure, during the slow air leakage of the tire (2), or after the tire (2) experiences an instantaneous blowout, the end of the radial support block (6) facing the hub (1) always maintains a radially sealed sliding connection with the radial guide sleeve (4). The radial support block (6) is provided with a drive assembly for driving the two sets of scissor support assemblies corresponding to it to unfold.

3. The graded adaptive tire internal support device based on compressive stress rate triggering according to claim 2, characterized in that: The drive assembly includes a second cylinder (7) and a linkage guide pin (8). The radial support block (6) has a strip-shaped sliding hole (601) that runs tangentially through the hub (1). The fixed end of the second cylinder (7) is fixedly installed in the strip-shaped sliding hole (601) at one end close to the hub (1). The telescopic end of the second cylinder (7) is fixedly installed with the linkage guide pin (8). The main body of the linkage guide pin (8) is rectangular and slides radially through the strip-shaped sliding hole (601) along the hub (1). The two axial ends of the linkage guide pin (8) are circular and extend out of the two ends of the strip-shaped sliding hole (601).

4. The graded adaptive tire internal support device based on compressive stress rate triggering according to claim 3, characterized in that: The scissor support assembly includes: a first connecting rod (9), a third rotating shaft (10), a strip support block (11), a second rotating shaft (12), an L-shaped support block (13), and a first rotating shaft (14). There are two symmetrically arranged first connecting rods (9). One end of each first connecting rod (9) is rotatably connected to the two ends of the linkage guide pin (8). The other end of each first connecting rod (9) is rotatably connected to one end of the strip support block (11) on the outside of the radial support block (6) through the third rotating shaft (10). The other end of the strip support block (11) is rotatably connected to one end of the L-shaped support block (13) through the second rotating shaft (12). The other end of the L-shaped support block (13) is rotatably connected to one end of the base (3) near the side wall of the tire (2) through the first rotating shaft (14). The L-shaped support block (13) and the strip support block (11) form a J-shaped support structure.

5. A graded adaptive tire internal support device based on compressive stress rate triggering according to claim 3, characterized in that: Two sets of anti-reverse limiting clips (15) are provided on the two side walls of the strip-shaped sliding hole (601), with two clips symmetrically arranged in each set; the anti-reverse limiting clip (15) includes: a right-angled trapezoidal clip and a spring three. Two sets of rectangular grooves are symmetrically opened on the two side walls of the strip-shaped sliding hole (601), with two clips symmetrically arranged in each set. The right-angled trapezoidal clip is slidably connected in the corresponding rectangular groove. The spring three is set in the rectangular groove, and its two ends are respectively fixedly connected to the side of the right-angled trapezoidal clip opposite to the inclined surface and the side of the rectangular groove perpendicular to the axis of the hub (1). When the spring three is fully compressed, the straight... The trapezoidal block is fully embedded in the rectangular groove; the inclined surface of the right-angled trapezoidal block extends into the strip-shaped sliding hole (601) when the spring is not compressed. In the two right-angled trapezoidal blocks in the same group, the distance between the two inclined surfaces near the end of the wheel hub (1) is greater than the distance between the two inclined surfaces away from the wheel hub (1); after the tire (2) experiences an instantaneous blowout, the linkage guide pin (8) is displaced to the end of the strip-shaped sliding hole (601) away from the wheel hub (1), and the end of the main body of the linkage guide pin (8) near the wheel hub (1) is pressed into contact with the end of the two right-angled trapezoidal blocks away from the wheel hub (1).

6. A graded adaptive tire internal support device based on compressive rate triggering according to claim 4, characterized in that: The radial support block (6) has two symmetrically arranged strip-shaped inner grooves (602) on its two sides opposite to the two strip-shaped support blocks (11). The end of the strip-shaped inner groove (602) away from the wheel hub (1) has an arc-shaped slot (603). The end of the strip-shaped support block (11) near the wheel hub (1) is arc-shaped. The end of the strip-shaped support block (11) near the wheel hub (1) slides in cooperation with the strip-shaped inner groove (602). After the tire (2) experiences an instantaneous blowout, the end of the strip-shaped support block (11) near the wheel hub (1) is engaged in the corresponding arc-shaped slot (603).

7. A graded adaptive tire internal support device based on compressive rate triggering according to claim 4, characterized in that: Also includes: The base (3) has a mounting hole that extends through the outer circumference of the hub (1) and is located near the two rotating shafts (14). The cylinder (16) is installed in the mounting hole. The fixed end of the cylinder (16) is fixedly installed on the outer circumference of the hub (1). The telescopic end of the cylinder (16) is fixedly connected to one end of the pressure plate. The other end of the pressure plate is fixedly connected to one end of the spring (17). The other end of the spring (17) is fixedly connected to one end of the corresponding L-shaped support block (13) near the base (3).

8. A graded adaptive tire internal support device based on compressive rate triggering according to claim 7, characterized in that: Also includes: A TPMS sensor, which is embedded in the valve core of the tire (2) for real-time detection of tire (2) air pressure; The MCU in the TPMS sensor controls the extension and retraction of cylinder one (16) and cylinder two (7) respectively.

9. A graded adaptive tire internal support device based on compressive stress rate triggering according to claim 4, characterized in that: Also includes: The locking assembly (18) includes: a spring and a cylindrical pin. The base (3) has two circular pin holes symmetrically opened at both ends near the two rotating shafts (14) connected to it. The L-shaped support block (13) has a circular inner groove at one end near the base (3). The axis of the circular pin hole and the axis of the circular inner groove are both perpendicular to the axis of the hub (1). One end of the spring is fixedly connected to the inner wall of the axial end of the circular inner groove, and the other end of the spring is fixedly connected to the axial end of the cylindrical pin. The cylindrical pin is axially slidably connected in the circular inner groove. When the spring is fully compressed, the cylindrical pin is completely embedded in the circular inner groove. When the scissor support assembly is fully extended, the cylindrical pin is slidably inserted into the corresponding circular pin hole.

10. A graded adaptive tire internal support device based on compressive stress rate triggering according to claim 4, characterized in that: The scissor support assembly further includes: a linkage assembly, a support head (19), a cylindrical spur gear (20), and a connecting rod (21). The support head (19) and the cylindrical spur gear (20) are each provided in four sets, with two gears in each set. The four sets of support heads (19) are respectively provided on opposite sides of the L-shaped support block (13) and on opposite sides of the strip support block (11). The four sets of cylindrical spur gears (20) are respectively provided on opposite sides of the L-shaped support block (13) and on opposite sides of the strip support block (11). The support head (19) is horn-shaped. A cylindrical spur gear (20) is fixedly connected to one end of the support head (19) opposite to its tip. Two cylindrical spur gears (20) in each group mesh with each other. Two sets of cylindrical spur gears (20) are rotatably installed at the corners on opposite sides of the L-shaped support block (13), and two other sets of cylindrical spur gears (20) are rotatably installed on opposite sides of the strip support block (11) near the end of the L-shaped support block (13). Two connecting rods (21) are symmetrically arranged. One end of each connecting rod (21) is hinged to the strip support block (11). On the L-shaped support block (11), two cylindrical spur gears (20) are arranged opposite to each other and close to the outer axial end face of the L-shaped support block (13), and the other ends of the two connecting rods (21) are respectively hinged to the outer axial end face of the two cylindrical spur gears (20) arranged opposite to each other and close to the outer axial end face of the L-shaped support block (13); after the tire (2) bursts, the outwardly protruding arc outer wall of the two support heads (19) in each group can abut against the inner wall of the tire (2); the linkage components are symmetrically arranged in two groups, and each group of linkage components includes Linkage 4 (22), Linkage 5 (23) and Linkage 2 (24). One end of Linkage 4 (22) and one end of Linkage 5 (23) are respectively hinged to the inner ends of the adjacent strip support block (11) and L-shaped support block (13). The other end of Linkage 4 (22), the other end of Linkage 5 (23) and one end of Linkage 2 (24) are hinged to each other. The other end of Linkage 2 (24) is hinged to the side of the strip support block (11) away from the L-shaped support block (13) and to the eccentric side of the outer end face of the corresponding cylindrical spur gear (20).

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