CN109050174B

CN109050174B - Automobile run-flat tire mounted on conventional rim

Info

Publication number: CN109050174B
Application number: CN201810856928.8A
Authority: CN
Inventors: 苏子林
Original assignee: Ludong University
Current assignee: Ludong University
Priority date: 2018-07-31
Filing date: 2018-07-31
Publication date: 2020-10-09
Anticipated expiration: 2038-07-31
Also published as: CN109050174A

Abstract

The invention relates to an automobile run-flat tire mounted on a conventional rim, and belongs to the technical field of automobile parts and automobile manufacturing. The invention adopts a known vacuum tire structure and is arranged on a conventional rim. The guard plate (2) is uniformly distributed in the middle of the inner cavity of the tire body (1) along the radial direction, so that the driving performance is not reduced, and the explosion risk can be reduced. The inner cavity of the guard plate (2) capable of dividing the tire body (1) forms a closed inner space, and the inner cavity can be stretched during explosion to absorb energy, reduce the energy release speed and avoid personal injury. When gasbag (3) expand, backplate (2) laminate in the inner wall of tire body (1), fold each other and laminate, wrap up and protect gasbag (3) that expand, avoid gasbag (3) to stand out outside tire body (1) and damage, can extrude the sharp-pointed hard thing of pricking. The tire of the invention is reinforced at the toe opening part, the stress state of the rim can be improved, and the driving safety is improved. The invention can be used for wheels of various vehicles.

Description

Automobile run-flat tire mounted on conventional rim

Technical Field

The invention relates to an automobile tire, in particular to an automobile anti-explosion tire, and belongs to the technical field of automobile parts and automobile manufacturing.

Background

The explosion of the automobile tire refers to the phenomenon that the automobile tire loses pressure within a short time (less than 0.1 second) and explodes. Because the pressure of the tire can be released instantly, violent shock waves are generated, and larger cracks or defects can be generated on the tire. The total length of the breach often exceeds 30 cm. The tire explosion happens in a moment, the response time is short, the harm is great, and accidents and personal injuries are often caused. Therefore, reducing the total energy released and the energy release rate during an automobile tire explosion is an important means to reduce injury. The explosion of the automobile tire is caused by that the tire pressure exceeds the strength limit of a tire weak link due to various factors, local through tearing or perforation is caused, and a through crack is formed; the irregular through cracks are rapidly expanded due to stress concentration, so that the pressure can be instantly released, and the explosion phenomenon occurs. The factors causing the explosion of the automobile tire are many, and the factors are internal defects of the tire, excessive fatigue, excessive abrasion, aging cracks, local defects, bulges, penetration of sharp hard objects, overhigh and overlow tire pressure, severe jolt, impact and the like. In order to avoid accidents and personal injuries, the explosion-proof tire is available at present, and the vehicle can still run continuously under the condition of air leakage of the tire, so that the vehicle is prevented from being out of control instantaneously. Common techniques for run-flat tires are sidewall reinforcement, fillers, multiple bladders, and airless tires. These techniques suffer from the common disadvantages of loud noise, increased fuel consumption, poor handling and poor ride quality.

The invention patent with application number 201310178165.3 provides an explosion-proof tire, which comprises an air bag, a trigger sensor and a safety switch; the safety airbag is arranged between the tire and the hub, the hub is provided with a groove, the triggering device of the safety airbag is arranged in the groove, one end of the triggering sensor extends into the tire, the other end of the triggering sensor is connected with the triggering device, and when the tire burst happens, enough supporting force can be provided instantly to ensure the driving safety. The solution described in this patent requires modification of the design of the conventional hub and, in addition, presents risks and drawbacks of accidental triggering during high jounces and impacts. The utility model discloses an application number is 201720844502.1's utility model provides an explosion-proof rolling tire that prevents, including the cover tire and the inner tube of a tyre, the inner wall of cover tire is equipped with a plurality of alloy baffle in succession, and the inboard of alloy baffle is equipped with air bag, and air bag's inside is equipped with pressure sensor, is equipped with the air bag air cock on the wheel hub, is equipped with the control valve on the air bag air cock, and the inside of control valve is equipped with PLC, can prevent that sharp-pointed hard thing from pricking the tire, can adjust the atmospheric pressure among the air bag. This patent technical scheme sets up the inner wall at the cover tire with the alloy baffle, can prevent effectively that sharp-pointed hard thing from piercing the tire, but has the easy fatigue fracture's of alloy baffle not enough, also influences the ride performance. The invention patent with the application number of 201710085901.9 provides an air bag type explosion-proof safety automobile tire, which comprises a fixing ring, a buffer net, an air bag, a tire pressure monitor, an air valve, a locking layer and a gap, wherein the fixing ring is welded on the top of a rim, the buffer net and the locking layer are fixed, the air bag is fixedly connected with the rim, and the air valve is fixed on the rim and communicated with an inner tire; when the tire explodes, the tire pressure monitor can transmit signals to the air bag, so that the air bag pops up to fill the inner space of the tire, and the vehicle is prevented from being out of control. According to the technical scheme, the driving performance is good during normal driving, but after the air bag is popped up, the air bag is easy to protrude out of the outer tire and damage the outer tire due to large cracks or defects of the outer tire, so that the tire loses support. If the strength and the deformation resistance of the air bag are improved, the phenomenon that the air bag is protruded out of the outer tire and damaged is avoided, the thickness and the hardness of the air bag are inevitably increased, the folding inconvenience of the air bag is caused, and the technical contradiction exists.

Vacuum tires are commonly used in current automobiles. The vacuum tire is a pneumatic tire without an inner tube, has high elasticity and wear resistance, good adhesive force and heat dissipation performance, and is economical and durable.

Disclosure of Invention

The invention aims to provide the automobile run-flat tire arranged on the conventional rim, which is convenient to assemble and disassemble; when the automobile tire explodes, the released explosion energy can be greatly reduced, personal injury is avoided, the support of the tire can be recovered instantly, normal running is realized, and the automobile is prevented from being out of control; the ride performance is comparable to a conventional vacuum tire during normal driving. The direction described in the present specification is divided into a radial direction and an axial direction with reference to an approximately torus tire in an installed state; radially inward is at the circumference of the torus, in the direction towards the center of the torus; conversely, radially outward; the forward direction is the normal driving direction, and the reverse direction is the backward direction; and so on. The hard as referred to herein means a hardness exceeding that of a known vacuum tire; otherwise, it is soft. The specific technical scheme of the invention is as follows.

An automobile run-flat tire mounted on a conventional rim comprises a tire body 1, a protective plate 2, an air bag 3, a ring-shaped steel wire 4, an adhesive lip 5, a bracket 6 and a tire pressure sensor 7, as shown in figure 1. The conventional rim refers to a rim on which a known vacuum tire is mounted.

The guard plate 2 is a long-strip-shaped curved surface hard plate-shaped structure, is uniformly distributed in the middle of the inner cavity of the tire body 1 along the radial direction, and is coated with a rubber layer on the surface, so that the abrasion caused by bumping, impacting and vibrating when an automobile runs is avoided;

furthermore, two ends of the guard plate 2 are clamped with the ring-shaped steel wire 4 to obtain fixation and support;

furthermore, the middle part of the guard plate 2 is provided with an inner bending part and an outer bending part which are mutually overlapped and attached, the inner cavity of the separable tire body 1 forms a closed inner space, and the inner bending part and the outer bending part can be stretched due to the difference of pressure between the inner part and the outer part during explosion to absorb energy, reduce the total energy released by explosion, reduce the energy release speed and avoid personal injury;

further, when the air bag 3 is unfolded, the inner and outer bent parts can be extended along the radial direction, are attached to the inner wall of the tire body 1, are mutually overlapped and attached, wrap and protect the unfolded air bag 3, and prevent the air bag 3 from protruding out of the tire body 1 and being damaged, and can extrude punctured sharp hard objects.

The air bag 3 is of a sealed bag-shaped structure, is folded and stored in the inner cavity of the tire body 1 on the inner side of the guard plate 2, can be instantly inflated and unfolded after explosion, fills the inner cavity of the tire body 1, recovers the support of the tire, normally runs, and avoids the out-of-control of the automobile.

Bonding lip 5 is soft ring shape curved surface structure, wraps up the tip of circle shape steel wire 4, backplate 2 and the tip of support 6 at radial outside inner wall, and the inner wall laminating and bonding at the toe mouth position at radial inboard surface and tire body 1 for circle shape steel wire 4, backplate 2 and support 6 obtain fixedly and support in tire body 1 is inside, can strengthen the toe mouth position of tire body 1, can avoid tire body 1 to deviate from the rim, can improve the stress state of rim, improve the life-span and the security of traveling of rim.

The bracket 6 is of a strip-shaped plate-shaped structure, the two ends of the bracket are provided with outer hooks 64, and the bracket can be fixed and supported by clamping the ring-shaped steel wire 4 through the outer hooks 64; the bracket 6 has a groove 62 in the middle, and the battery, the controller and the gas generator are mounted through the groove 62. The controller is in wireless connection with the mobile phone and the automobile network, at least sends out tire pressure, tire temperature, temperature abnormity alarm, tire pressure abnormity alarm and electric quantity abnormity alarm, obtains driving speed, is at least connected with the battery, the gas generator and the tire pressure sensor 7, and can judge whether to deploy the air bag 3 according to the driving speed and the tire pressure. The gas generator is connected to the airbag 3 and is capable of inflating the airbag 3 so that the airbag 3 deploys.

The tire body 1 is a well-known vacuum tire structure, and a tire body of the tire is internally provided with steel wires.

The guard plate 2 is of a long strip-shaped curved surface hard plate-shaped structure, the surface of the guard plate is wrapped by a rubber layer, the middle part of the guard plate is provided with a convex part 21 and a concave part 22 which are uniformly distributed to form an inner bending part and an outer bending part, the two ends of the guard plate are provided with inner hooks 23, and the inner hooks 23 are clamped with the ring-shaped steel wire 4 to obtain fixing and supporting, as shown in figure 2. In fig. 2, the dotted circle is a part indicated by an arrow, and is a partially enlarged view in the direction indicated by the arrow.

Furthermore, the outer bulge 21 has the same radial cross section shape at the front end and the rear end along the circumferential direction, the rear end is large, and the front end is small; the inner recess 22 is adjacent to the outer protrusion 21 left and right, the radial cross sections of the front end and the rear end are the same in shape along the circumferential direction, the rear end is small, and the front end is large; so that the front part of the guard plate 2 can be inserted into the inner side of the rear part of the adjacent guard plate 2 in front, and the guard plates are overlapped and attached to each other.

Further, the tip trailing flank of backplate 2 and the trailing flank front and back parallel and level at inside and outside flexion place middle part, tip width are not more than the half of middle part width for interior crotch 23 avoids mutual interference along 4 evenly distributed of circle shape steel wire, also makes backplate 2 of overlying each other and laminating, after expanding along radial extension because of gasbag 3, keeps overlying and laminating.

The air bag 3 is of a sealed bag-shaped structure formed by a soft film, is in a ring body shape after being inflated and unfolded, and forces the inner and outer bent parts at the middle part of the protection plate 2 to be completely extended so as to fill the inner cavity of the tire body 1; after the tire is exploded, the support of the tire can be recovered instantly, the tire can run normally, and the out-of-control automobile is avoided.

The ring-shaped steel wire 4 is of a ring-shaped structure and is clamped with the inner hook 23 of the protection plate 2 and the outer hook 64 of the support 6, the rubber layer is wrapped on the surface of the ring-shaped steel wire, the air bag 3 and the tire body 1 are prevented from being injured, and fixing and supporting are provided for the protection plate 2 and the support 6.

The bonding lip 5 is of a soft annular curved surface structure, the inner wall of the radial outer side is wrapped by the ring-shaped steel wire 4, the inner hook 23 of the protection plate 2 and the outer hook 64 of the support 6, and the outer surface of the radial inner side is bonded and bonded with the inner wall of the tire body 1 at the toe opening part so as to fix and support the protection plate 2, the ring-shaped steel wire 4 and the support 6.

The bracket 6 is a long strip-shaped plate-shaped structure which is symmetrical front and back, the left side and the right side of the bracket are provided with inward bends 61, the middle part of the bracket is provided with a groove 62, the bottom surface of the groove 62 is provided with a through groove 63, the left end and the right end of the bracket are provided with outer hooks 64, and the surface of the bracket is wrapped with a rubber layer, as shown in fig. 3. In fig. 3, the dotted circle is a part indicated by an arrow, and is a partially enlarged view in the direction indicated by the arrow. The number of the supports 6 is at least two, and the supports are uniformly distributed in the inner cavity of the tire body 1 along the circumferential direction, so that the tire of the invention obtains dynamic balance. The recess 62 of one bracket 6 receives and mounts the battery and controller, and the recess 62 of the other bracket 6 receives and mounts the gas generator.

The controller at least comprises a microprocessor, a memory and a wireless communication module, is connected with the battery, the gas generator and the tire pressure sensor 7 through wires 65, is in wireless connection with the mobile phone and the automobile network, at least sends out tire pressure, tire temperature, temperature abnormity alarm, tire pressure abnormity alarm, electric quantity abnormity alarm and setting information, receives driving speed and setting information, and can judge whether to deploy the air bag 3 according to the driving speed and the tire pressure.

The gas generator is of a cylindrical rigid structure and is connected with the air bag 3 through a pipe fitting, high-pressure gas can be instantly generated to inflate the air bag 3, so that the air bag 3 is unfolded, and the inner and outer bent parts in the middle of the guard plate 2 are forced to be completely extended; the support of the tire can be instantaneously restored after the tire of the present invention explodes.

Further, the inward bend 61 is bent radially inward along the circumferential direction, so that the support 6 can be bent and stretched when the airbag 3 is deployed, the rim is pressed, the breakage due to the stretching is avoided, the support 6 can be guided to be bent and deformed when the tire of the present invention is mounted and dismounted, and the mounted battery, controller and gas generator are also prevented from being damaged.

Further, the width of the bracket 6 in the middle of the groove 62 is greater than twice the width of the two sides of the inward bend 61, so that the rigidity of the groove 62 is ensured, and the damage of the mounted battery, controller and gas generator caused by the deformation of the groove 62 is avoided. The groove 62 is of uncovered rectangular parallelepiped box-shaped configuration.

Further, the through groove 63 is a rectangular through groove, penetrates through the bottom surface of the groove 62, can be used for replacing a battery, and can be used for observing and marking the states of the controller and the gas generator.

Further, the outer hooks 64 allow both ends of the bracket 6 to be bent outward and to be caught by the loop-shaped wire 4, thereby being fixed and supported.

Further, the electric wire 65 is used for connecting the tire pressure sensor 7, the battery, the controller and the gas generator, a soft sheath is arranged on the outer surface of the electric wire, a gap exists between the electric wire 65 and the sheath, the electric wire can freely move in the sheath, and fatigue fracture or breakage of the electric wire 65 when the sheath elastically stretches and contracts is avoided.

The tire pressure sensor (7) is arranged on the radial outer side of the bonding lip (5) and located between the inner hooks (23) at the end parts of the two adjacent guard plates (2) to measure the pressure and the temperature of the inner cavity of the tire body (1).

Supplementary explanation: (1) the rubber layer is wrapped on the surface of the guard plate 2, the rubber layer is uniformly distributed in the middle of the inner cavity of the tire body 1 along the radial direction, the inner bending part and the outer bending part are arranged in the middle and can be mutually overlapped and attached, the inner bending hooks 23 at two ends are clamped with the ring-shaped steel wire 4 and are uniformly distributed along the ring-shaped steel wire 4, and therefore the inner cavity of the tire body 1 can be divided to form a closed inner space, but the inner space is not sealed. The inner and outer curved portions can be laminated and attached to each other and tightly combined, but the inner curved hooks 23 at both ends are clamped with the ring-shaped steel wire 4 and evenly distributed along the ring-shaped steel wire 4 without overlapping, and only the soft rubber layers on the surface layers are laminated with each other. When inflated by a valve attached to the rim, the inner cavity of the tire body 1 outside the protector plate 2 can be inflated. When the tire of the invention explodes, a large resistance is generated to absorb energy.

(2) After the tire of the invention is installed on a conventional rim, the lowest part of the inner surface of the bracket 6 is required to be higher than the highest part of the outer edge of the rim, so that the bracket 6, and the battery, the controller and the gas generator installed on the bracket 6 are not damaged when the tire of the invention is installed and disassembled.

(3) The antenna of the wireless communication module of the controller needs to be connected with the steel wire of the tire body 1 in the tire body, so that electrostatic shielding is avoided, and smoothness of wireless signals is ensured.

(4) The tire of the invention is strengthened at the toe mouth part, but the tire pressure cannot be too low for long-term running, and the running with zero tire pressure is strictly forbidden, otherwise, the guard plate 2 can be damaged by fatigue, but the tire can not fall off, and accidents and personal injury can not be caused.

The invention has the beneficial effects that: the tire adopts a known vacuum tire structure, the protective plate 2, the air bag 3, the ring-shaped steel wire 4, the bonding lip 5, the bracket 6 and the tire pressure sensor 7 are fixed in the inner cavity of the tire body 1, and the tire can be mounted on a conventional rim, is convenient to assemble and disassemble, and can reduce the updating and manufacturing cost. The guard plate 2 is uniformly distributed in the middle of the inner cavity of the tire body 1 along the radial direction, and is fixed on the inner wall of the tire body 1 at the toe opening part through the ring-shaped steel wire 4 and the bonding lip 5, so that the performances of a tire crown, a tire shoulder and a tire side are not influenced; when the tire runs normally, the guard plate 2 is not deformed, the riding performance is equivalent to that of a conventional vacuum tire, and the riding performance of the tire during normal running is not reduced. When jolting, impacting and vibrating excessively and violently, even if the inner wall of the tire at the tire crown part accidentally extrudes the inner and outer bending parts of the protection plate 2, the inner and outer bending parts are elastically deformed, and the protection plate 2 cannot be damaged; in addition, the deformed inner and outer bending parts can also provide support for the tire crown, reduce the risk of tire explosion, and are safe and reliable. The guard plate 2 can be used for dividing the inner cavity of the tire body 1 to form a closed inner space, and can be stretched due to the difference between the inner pressure and the outer pressure during explosion to absorb energy, reduce the total energy released by explosion, reduce the energy release speed and avoid personal injury. When gasbag 3 expandes, the inside and outside flexion of backplate 2 can be along radial extension, laminates in the inner wall of tire body 1, folds each other and laminates, wraps up and protects the gasbag 3 that expandes, avoids 3 outsourcing tire body 1 of gasbag and damages, can extrude the sharp-pointed hard thing of pierceing.

The bonding lip 5 wraps the ring-shaped steel wire 4, the end part of the protective plate 2 and the end part of the support 6, and is bonded and bonded with the inner wall of the tire body 1 at the toe opening part, so that the ring-shaped steel wire 4, the protective plate 2 and the support 6 are fixed and support the inner wall of the toe opening part, therefore, the tire is reinforced at the toe opening part, the tire body 1 can be prevented from falling off the rim, the stress state of the rim can be improved, the service life of the rim is prolonged, and the driving safety of the rim is improved. In addition, the tire of the invention is provided with the controller and the tire pressure sensor 7, can be wirelessly connected with a mobile phone and an automobile network, and at least sends out tire pressure, tire temperature, temperature abnormity alarm, tire pressure abnormity alarm and electric quantity abnormity alarm, thereby improving the driving safety of the automobile. The tire can also be used for wheels of various vehicles such as airplanes, armored vehicles, engineering vehicles and the like, and has wide application range.

Drawings

FIG. 1 is a front view of an upper vertical radial section of a tire of the present invention;

FIG. 2 is a top view of the shield 2 of FIG. 1;

fig. 3 is a top view of the bracket 6 of fig. 1.

Description of reference numerals: the tire comprises a tire body 1, a protective plate 2, a convex 21, a concave 22, an inward bent hook 23, an air bag 3, a ring-shaped steel wire 4, an adhesive lip 5, a support 6, an inward bent 61, a groove 62, a through groove 63, an outward bent hook 64, an electric wire 65 and a tire pressure sensor 7.

Detailed Description

The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a front view of an upper vertical radial section of the tire of the present invention, which is also a schematic view of the overall structure of the present invention, and includes a tire body 1, a protector 2, an air bag 3, a ring-shaped steel wire 4, an adhesive lip 5, a bracket 6, and a tire pressure sensor 7. The tire body 1 is preferably a well-known vacuum tire with steel wires inside the carcass. The steel wire is fixedly connected with an antenna carried by a wireless communication module of the controller; the fixed connection is preferably welded.

Fig. 2 is a plan view of the shield plate 2 of fig. 1. The guard plate 2 is a long-strip-shaped curved surface hard plate-shaped structure, the middle part of the guard plate is provided with an outer convex 21 and an inner concave 22 which are uniformly distributed, the two ends of the guard plate are provided with inner hooks 23, the rear side surface of the end part is parallel and level with the rear side surface of the middle part where the inner and outer bending parts are located, the width of the end part is not more than half of the width of the middle part, a stainless steel plate is preferably selected for stamping and bending.

The air bag 3 is a sealed bag-shaped structure formed by a soft film, is in a ring body shape after being inflated and unfolded, forces the inner and outer bent parts at the middle part of the protection plate 2 to be completely extended, and can fill the inner cavity of the tire body 1. The soft film is preferably made of a known airbag fabric material.

The ring-shaped steel wire 4 is of a circular ring-shaped structure, preferably a known steel wire profile, is bent, shaped and welded end to end, is clamped with the inner hook 23 of the guard plate 2 and the outer hook 64 of the bracket 6, and is coated with a rubber layer on the surface.

The bonding lip 5 is of a soft annular curved surface structure, is preferably made of fiber reinforced synthetic rubber, wraps the ring-shaped steel wire 4, the inner hook 23 of the guard plate 2 and the outer hook 64 of the support 6 on the inner wall of the radial outer side, and is attached and bonded with the inner wall of the tire body 1 at the toe opening part on the outer surface of the radial inner side so as to fix and support the guard plate 2, the ring-shaped steel wire 4 and the support 6. The bonding of the bonding lip 5 and the inner wall of the tire body 1 at the toe-opening part is preferably performed by a hot pressing and vulcanizing process, and a known adhesive can be used for bonding.

Fig. 3 is a top view of the bracket 6 of fig. 1. The support 6 is a long strip-shaped plate-shaped structure which is symmetrical front and back, the left side and the right side of the support are provided with inward bends 61, the middle of the support is provided with a groove 62, the bottom surface of the groove 62 is provided with a through groove 63, the left end and the right end of the support are provided with outer hooks 64, preferably, a stainless steel plate is punched and bent to form, and then a rubber layer is wrapped on the surface of the support. The number of the brackets 6 is at least two, the groove 62 of one bracket 6 is used for accommodating and mounting the battery and the controller, and the groove 62 of the other bracket 6 is used for accommodating and mounting the gas generator. The battery is preferably a dry cell battery, which is well known, and is packed in a well known battery box, then wrapped with a rubber layer, and pressed into the rubber layer wrapped by the bracket 6 at the position of the groove 62.

The controller is connected to the battery, the gas generator, and the tire pressure sensor 7 through electric wires 65. The electric wire 65 has a soft sheath on the outer surface thereof with a gap therebetween. The outer surface of the sheath is wrapped by a rubber layer, and the rubber layer is pressed into the surface of the bonding lip 5 and the surface of the bracket 6 to form a whole. The soft sheath is preferably a known rubber hose.

The controller comprises a microprocessor, a memory and a wireless communication module, is in wireless connection with the mobile phone and the automobile network, and can judge whether to deploy the air bag 3 according to the running speed and the tire pressure. The microprocessor, memory and wireless communication module, preferably known microprocessor, memory and wireless communication module products, are soldered onto a printed circuit board and mounted within a rigid housing to form the controller. The rigid shell is preferably made of steel plate profiles, and after the surface of the rigid shell is wrapped with a rubber layer through stamping, bending and welding forming, the pressing-in bracket 6 is fixedly installed in the rubber layer wrapped at the groove 62. The surfaces of the inner side and the outer side of the rigid shell are provided with ventilation pipes, the rubber layers of the inner surface and the outer surface of the support 6 are exposed, the gas circulation can be promoted by utilizing the rotation inertia of the wheels, and the heat dissipation of electronic components is facilitated. Corresponding management software is required to be installed in a mobile phone and an automobile network which are in wireless connection with the controller, and data exchange and wireless communication are carried out. The development of the management software is completed by adopting a known development tool according to different operating systems and communication protocols.

The gas generator is a cylindrical rigid structure and is connected with the air bag 3 through a pipe fitting, high-pressure gas can be generated instantly, and the known gas generator product is preferred. To facilitate replacement and maintenance, the gas generator is mounted within a rigid housing by a mechanical connection. The mechanical connection is a detachable connection through known fasteners such as pressure plates, rubber pads and bolts. The processing technology and the material of the rigid shell are the same as those of the rigid shell of the controller. After the surface of the rigid shell is coated with a rubber layer, the pressing support 6 is fixedly mounted in the rubber layer coated at the position of the groove 62.

The tire pressure sensor 7 is arranged on the radial outer side of the bonding lip 5 and located between the inner hooks 23 at the end parts of two adjacent guard plates 2. The tire pressure sensor 7 is preferably a well-known tire pressure sensor product. A through hole which is through from inside to outside is pressed out on the surface of the bonding lip 5 between the inner hooks 23 at the end parts of two adjacent guard plates 2, and a sensitive element of the tire pressure sensor 7 is arranged in the through hole, so that the measurement of pressure and temperature is convenient.

The process of wrapping the rubber layer is preferably selected from the processes of rubber hanging and vulcanization in tire processing. The use, removal, maintenance and repair of the tire of the present invention are the same as those of the known vacuum tire.

The above embodiments are merely preferred embodiments of the present invention, and are not to be construed as limiting the present invention. It is within the scope of the present invention to modify the materials and fabrication processes while still meeting the structural and performance requirements of the present invention.

Claims

1. The utility model provides an automobile run-flat tire, includes tire body (1), backplate (2), gasbag (3), circle shape steel wire (4), bonding lip (5), support (6) and tire pressure sensor (7), its characterized in that: the guard plate (2) is of a long-strip-shaped curved surface hard plate-shaped structure, is uniformly distributed in the middle of the inner cavity of the tire body (1) along the radial direction, and is coated with a rubber layer on the surface, so that the abrasion caused by bumping, impact and vibration of automobile running is avoided;

the two ends of the guard plate (2) are clamped with the ring-shaped steel wire (4) to obtain fixation and support;

the middle part of the guard plate (2) is provided with an inner bending part and an outer bending part which are mutually overlapped and attached, the inner cavity of the separable tire body (1) forms a closed inner space, and the separable tire body can be stretched to absorb energy during explosion, so that the total energy released by explosion is reduced, the energy release speed is reduced, and personal injury is avoided;

when the air bag (3) is unfolded, the inner bending part and the outer bending part can extend along the radial direction, are attached to the inner wall of the tire body (1), are mutually overlapped and attached, wrap and protect the unfolded air bag (3), and prevent the air bag (3) from protruding out of the tire body (1), being damaged and being capable of extruding punctured sharp hard objects;

the air bag (3) is of a sealed bag-shaped structure, is folded and stored in the inner cavity of the tire body (1) on the inner side of the protective plate (2), can be instantly inflated and unfolded after explosion, fills the inner cavity of the tire body (1), recovers the support of the tire, normally runs, and avoids the out-of-control automobile;

the bonding lip (5) is of a soft annular curved surface structure, the inner wall of the radial outer side is wrapped with the ring-shaped steel wire (4), the end part of the protection plate (2) and the end part of the support (6), and the outer surface of the radial inner side is attached to and bonded with the inner wall of the tire body (1) at the toe opening part, so that the ring-shaped steel wire (4), the protection plate (2) and the support (6) are fixed and supported in the tire body (1), the toe opening part of the tire body (1) can be strengthened, the tire body (1) can be prevented from falling off the rim, the stress state of the rim can be improved, the service life of the rim is prolonged, and the driving safety is;

the support (6) is of a strip-shaped plate-shaped structure, the two ends of the support are provided with outer hooks (64), and the support can be fixed and supported by clamping the ring-shaped steel wire (4) through the outer hooks (64);

the bracket (6) is provided with a groove (62) in the middle, and a battery, a controller and a gas generator are installed through the groove (62);

the controller is wirelessly connected with the mobile phone and the automobile network, at least sends out tire pressure, tire temperature, temperature abnormity alarm, tire pressure abnormity alarm and electric quantity abnormity alarm to obtain driving speed, and is at least connected with the battery, the gas generator and the tire pressure sensor (7) and can judge whether to deploy the air bag (3) according to the driving speed and the tire pressure;

the gas generator is connected with the air bag (3) and can inflate the air bag (3) to ensure that the air bag (3) is unfolded.

2. A run flat tire for automobiles according to claim 1, wherein: the guard plate (2) is provided with a convex part (21) and a concave part (22) which are uniformly distributed in the middle part to form an inner bending part and an outer bending part, the two ends of the guard plate are provided with inner hooks (23), and the inner hooks (23) are clamped with the ring-shaped steel wire (4) to obtain fixation and support;

the outer bulge (21) is along the circumferential direction, the radial cross sections of the front end and the rear end are the same in shape, the rear end is large, and the front end is small; the inner recess (22) is adjacent to the outer protrusion (21) left and right, the radial cross sections of the front end and the rear end are the same in shape along the circumferential direction, the rear end is small, and the front end is large; the front part of the guard plate (2) can be inserted into the inner side of the rear part of the adjacent guard plate (2) in front to form mutual overlapping and attaching;

parallel and level around the tip trailing flank of backplate (2) and the trailing flank at middle part, tip width are not more than the half of middle part width for interior crotch (23) are along circle shape steel wire (4) evenly distributed, also make backplate (2) of folding each other and laminating, keep folding and laminating after the extension.

3. A run flat tire for automobiles according to claim 1, wherein: the air bag (3) is of a sealed bag-shaped structure formed by a soft film, is in a circular ring shape after being inflated and unfolded, and forces the inner and outer bent parts of the protection plate (2) to be completely extended, so that the inner cavity of the tire body (1) can be filled.

4. A run flat tire for automobiles according to claim 1, wherein: the ring-shaped steel wire (4) is of a circular ring-shaped structure, the rubber layer is wrapped on the surface of the ring-shaped steel wire, the air bag (3) and the tire body (1) are prevented from being injured, and fixing and supporting are provided for the guard plate (2) and the support (6).

5. A run flat tire for automobiles according to claim 1, wherein: the support (6) is of a front-back symmetrical long strip plate-shaped structure, the left side and the right side of the support are provided with inward bends (61), the middle of the support is provided with a groove (62), the bottom surface of the groove (62) is provided with a through groove (63), the left end and the right end of the support are provided with outer hooks (64), and the surface of the support is wrapped by a rubber layer;

the number of the supports (6) is at least two, and the supports are uniformly distributed in the inner cavity of the tire body (1) along the circumferential direction, so that the automobile run-flat tire is dynamically balanced; the groove (62) of one bracket (6) is used for accommodating and mounting the battery and the controller, and the groove (62) of the other bracket (6) is used for accommodating and mounting the gas generator;

the controller at least comprises a microprocessor, a memory and a wireless communication module, and is connected with the battery, the gas generator and the tire pressure sensor (7) through wires (65);

the inward bend (61) is bent towards the radial inner side along the circumferential direction, so that the support (6) can be bent and stretched when the air bag (3) is unfolded, a rim is pressed, the breakage caused by stretching is avoided, the support (6) can guide bending deformation when the automobile run-flat tire is mounted and dismounted, and the mounted battery, a controller and a gas generator are prevented from being damaged;

the width of the bracket (6) in the middle of the groove (62) is more than twice of the width of the inner bend (61), so that the damage of the battery, the controller and the gas generator caused by the deformation of the groove (62) is avoided;

the through groove (63) is a rectangular through groove, penetrates through the bottom surface of the groove (62), and can be used for replacing batteries.

6. An automobile run-flat tire according to claim 5, wherein: the outer surface of the electric wire (65) is provided with the soft sheath, and a gap is formed between the electric wire and the sheath, so that the electric wire can move freely in the sheath, and the electric wire (65) is prevented from fatigue fracture or breaking when the sheath elastically stretches.

7. A run flat tire for automobiles according to claim 1, wherein: the tire pressure sensor (7) is arranged on the radial outer side of the bonding lip (5) and located between the inner hooks (23) at the end parts of the two adjacent guard plates (2) to measure the pressure and the temperature of the inner cavity of the tire body (1).