CN210941195U

CN210941195U - Novel air bag tire burst preventing device

Info

Publication number: CN210941195U
Application number: CN201921717915.9U
Authority: CN
Inventors: 芮静敏; 徐洋; 姚佳; 刘丽红
Original assignee: Beijing Polytechnic
Current assignee: Beijing Polytechnic
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-07-07
Anticipated expiration: 2029-10-14

Abstract

The utility model discloses a novel air bag tire burst prevention device, which comprises a tire burst prevention device main body, a tire, a spare inner tube, a rim and a gas generator, wherein the middle of the tire burst prevention device main body is fixedly connected with the gas generator, two ends of the gas generator are movably connected with hollow spokes, two sides of the top of each hollow spoke are fixedly connected with the rim, the top end of the rim is movably connected with the tire, the bottom of each hollow spoke is fixedly connected with a one-way valve switch, the one-way valve switch can directly inflate the spare inner tube arranged on the rim when gas passes through an inflation inlet to form a new inner tube to replace a damaged tire to continue to support the vehicle, the emergency inflation of the spare inner tube after the tire burst is realized, the role of a temporary tire is born, enough braking processing time is provided for a driver, the tire burst accident is reduced and avoided, and the gas generator is arranged in the middle of a wheel hub to achieve, the inclination condition caused by unstable movement is reduced, and the method has wide development prospect in the future.

Description

Novel air bag tire burst preventing device

Technical Field

The utility model belongs to the technical field of the flat tire, specifically be a novel gasbag flat tire device.

Background

At present, the total mileage of the expressway in China breaks through 14 kilometers and is the first place in the world. With the continuous temperature rise of the automobile market, according to statistics, the number of motor vehicles in the whole country in the last half of 2019 reaches 3.4 hundred million, and as long as 6 months in 2019, the number of automobiles in the whole country reaches 2.5 hundred million, so that the automobile market becomes the largest automobile producing and selling country in the world. The number of people died due to traffic accidents in China each year is more than 10 thousands of people, the people died in the world in the first year, and the number of people died in the road traffic accidents in China is 6.3 thousands of people, and the people died in the world in the second year. 46% of highway traffic accidents are associated with tires, with a flat tire accounting for 70% of tire accidents. In addition, the death rate of drivers and passengers reaches 100 percent when the speed per hour of the automobile is over 160km/h during tire burst. The tire burst becomes the first killer of driving safety in high-speed driving. Runflat tires have become an important issue for automotive safety.

At present, an emergency inflation device is added into a tire when an air bag technology is used for explosion prevention, the tire or a spare inner tube is inflated in a short time by starting a gas generator under the sequential action of a tire pressure monitoring module, a control module and an ignition module when the tire is blown out, at present, the ignition is carried out by adopting electric signal ignition, and errors and time delay which are possibly generated when the tire pressure monitoring device sends signals to the controller and the controller to the gas generator when the electric signal ignition is carried out, and meanwhile, when the current air bag is used for installing the tire, a user can be caused to generate unstable conditions when the tire is moved.

Therefore, how to arrange a novel air bag tire burst preventing device becomes a problem to be solved at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems of time delay and unstable movement, a novel air bag tire burst preventing device is provided.

In order to achieve the above object, the utility model provides a following technical scheme:

a novel air bag tire burst preventing device comprises a tire burst preventing device main body, a tire, a spare inner tube, a rim and a gas generator, wherein the gas generator is fixedly connected in the middle of the tire burst preventing device main body, hollow spokes are movably connected to two ends of the gas generator, the rim is fixedly connected to two sides of the top of each hollow spoke, the tire is movably connected to the top end of the rim, bolts are connected to the bottom of each hollow spoke in a penetrating mode, a one-way valve switch is fixedly connected to the bottom of each hollow spoke, an inflation inlet is fixedly connected to the top end of each one-way valve switch, a mounting disc is movably connected to the bottom of the gas generator, ignition powder is fixedly connected to the middle of the top end of the mounting disc, a main powder charging chamber is fixedly connected to the top end of the ignition powder, a shell is fixedly connected to the top end of the mounting disc, the top of the firing pin chamber is fixedly connected with a connecting key, one side of the connecting key is fixedly connected with a nozzle, the bottom of one side of the mounting disc is fixedly connected with a one-way air outlet hole, and the top of the main explosive loading chamber is fixedly connected with a pressurizing hole and the back of the shell is fixedly connected with a cooling and filtering component.

Preferably, a spare inner tube is fixedly connected to the middle of the top of the hollow spoke.

Preferably, a cushion pad is fixedly connected to the top of the connecting key.

Preferably, the top of the cushion pad is fixedly connected with an elastic element. Preferably, the gas generator is composed of a mounting plate at the bottom of the gas generator, ignition powder in the middle of the top end of the mounting plate, a main powder loading chamber at the top end of the ignition powder, a shell at the top end of the mounting plate, a firing pin chamber at the bottom of the shell, a connecting key at the top of the firing pin chamber, an elastic element at the top of the buffer pad and a cooling filter assembly at the back of the shell.

Preferably, the hub is composed of the gas generator, the hollow spoke, the rim, the spare inner tube, the tire, the one-way valve switch and the inflation inlet.

Compared with the prior art, by the beneficial effects of the utility model:

1. the utility model discloses in, gas generator comprises mounting disc, ignition powder, main cartridge chamber, shell, firing pin room, connecting key, elastic element and cooling filtering component jointly, changes the signal of telecommunication ignition into mechanical type ignition in this device, sends error and time delay that the signal probably produced to gas generator by tire pressure monitor to controller, controller when having avoided the signal of telecommunication ignition, has improved the reliability of igniteing greatly.

2. The utility model discloses in, constitute wheel hub jointly by gas generator, cavity spoke, rim, the spare inner tube of a tyre, tire, one-way valve switch and inflation inlet, gas generator inflates the spare inner tube of a tyre of installing on the rim, forms the new inner tube of a tyre, replaces damaged tire to continue to support the vehicle, provides sufficient braking process time for the driver, reduces and avoids the accident of blowing out.

Drawings

Fig. 1 is a schematic view of the overall side sectional structure of the present invention;

fig. 2 is a schematic view of the overall plane structure of the present invention;

FIG. 3 is a schematic view of the gas generator according to the present invention;

fig. 4 is a schematic sectional view of the gas generator of the present invention.

In the figure, 1, a main body of the tire burst preventing device, 2, a tire, 3, a spare inner tube, 4, a rim, 5, a hollow spoke, 6, a bolt, 7, a gas generator, 8, an inflation inlet, 9, a one-way valve switch, 10, a mounting plate, 11, a shell, 12, a firing pin chamber, 13, ignition powder, 14, a main charging chamber, 15, a connecting key, 16, a cushion pad, 17, an elastic element, 18, a nozzle, 19, a cooling filter assembly, 20, a one-way air outlet, 21 and a pressurizing hole are shown.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, but does not indicate or imply that the indicated orthopedic run-flat device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they can be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can communicate between the two elements. The specific meaning of the above terms in the present invention can be understood to be specific to those skilled in the art.

Embodiment one, referring to fig. 1-4, the utility model provides a technical scheme: a novel air bag tire burst prevention device comprises a tire burst prevention device main body 1, a tire 2, a spare inner tube 3, a rim 4 and a gas generator 7, wherein the middle of the tire burst prevention device main body 1 is fixedly connected with the gas generator 7, two ends of the gas generator 7 are movably connected with hollow spokes 5, two sides of the top of each hollow spoke 5 are fixedly connected with the rim 4, the top end of each rim 4 is movably connected with the tire 2, the bottom of each hollow spoke 5 is connected with a bolt 6 in a penetrating manner, the bottom of each hollow spoke 5 is fixedly connected with a one-way valve switch 9, the top end of each one-way valve switch 9 is fixedly connected with an inflation inlet 8, the bottom of the gas generator 7 is movably connected with a mounting disc 10, the middle of the top end of the mounting disc 10 is fixedly connected with ignition powder 13, the top end of each ignition powder 13 is fixedly connected with a main powder charging chamber 14, the top end of the, the top of the firing pin chamber 12 is fixedly connected with a connecting key 15, one side of the connecting key 15 is fixedly connected with a nozzle 18, the bottom of one side of the mounting plate 10 is fixedly connected with a one-way air outlet hole 20, and the top of the main charging chamber 14 is fixedly connected with a pressurizing hole 21, and the back of the shell 11 is fixedly connected with a cooling filter assembly 19.

Preferably, the reserve inner tube of a tyre 3 of fixedly connected with in the middle of the top of cavity spoke 5, reserve inner tube of a tyre 3 is for air bag's material, but increase reserve inner tube of a tyre 3's compressive strength and material strength on air bag basis to prevent that inflation pressure and foreign matter puncture from producing the condition of damage, inner tube of a tyre 3 also has certain gas tightness simultaneously, and easily fold and encapsulate, thereby conveniently guarantee the effective effect of urgent aerating device, also the person of facilitating the use folds reserve inner tube of a tyre 3 simultaneously.

Preferably, the top of the connecting key 15 is fixedly connected with a cushion pad 16, when the gas generator 7 is started, the cushion pad 16 has a certain buffering effect, so that when gas is generated inside the gas generator 7, the cushion pad 16 generates a buffering effect when contacting the device and the hub, and the condition that the gas is collided inside the gas generator 7 to cause damage when rushing out from the inflating opening 8 is prevented.

Preferably, the top of the cushion pad 16 is fixedly connected with an elastic element 17, the elastic element 17 is a corrugated diaphragm which is deformed under pressure, the corrugated diaphragm is a pressure sensitive element which can move in a direction perpendicular to the flexibility direction of the corrugated diaphragm, the flexible surface of the corrugated diaphragm has various corrugations relative to other diaphragms, and the thickness, strength and sensitivity of the corrugated diaphragm in the elastic element 17 can be designed according to the ambient pressure, working pressure, temperature and the like, so that the corrugated diaphragm can be deformed under pressure in the device. Preferably, the gas generator 7 is composed of a mounting plate 10 at the bottom of the gas generator 7, a firing pin chamber 12 in the middle of the top end of the mounting plate 10, a main charging chamber 14 at the top end of an ignition charge 13, a housing 11 at the top end of the mounting plate 10, a firing pin chamber 12 at the bottom of the housing 11, a connecting key 15 at the top of the firing pin chamber 12, an elastic element 17 at the top of a cushion 16 and a cooling filter assembly 19 behind the housing 11, when the user installs the gas generator 7 inside the hub through the mounting plate 10, the user inflates the gas generator 7 to a preset pressure (tire burst warning pressure, the device takes 200 kPa), after the tire inflation is completed, the gas generator 7 and the tire 2 are in the same pressure environment through the hollow spoke 5, when the environment pressure is greater than the generator chamber pressure, the elastic element 17 is deformed under pressure, and the connecting key 15 can isolate the firing pin chamber 12 from the firing pin chamber 12, the elastic element 17 and the connecting key 15 are fixed through threads, so that once a tire burst occurs, the air pressure in the tire drops suddenly, after the pressure drops to a preset pressure, the pressure in the inner cavity of the shell 11 begins to be higher than the ambient pressure, the elastic element 17 pulls out the connecting key 15 under the action of the internal and external pressure difference, the striker chamber 12 pops out the inner striker to the ignition powder 13 due to the reason that the connecting key 15 is lost to block and isolate the striker chamber 12, so that the striker chamber 12 is ignited by the striker, the striker chamber 12 ignites the main powder charge in the main powder charge chamber 14 through the ignition hole, the main powder charge generates gas after ignition and enters the inner cavity of the shell 11 through the air hole at the top of the main powder charge chamber 14, and then enters the hub through the cooling filter assembly 19 from the inner cavity of the shell 11 to inflate the main powder charge chamber for explosion prevention, and the common electric signal ignition is changed into mechanical ignition in the device, the tire pressure monitoring device avoids errors and time delay which are possibly generated when the tire pressure monitor sends signals to the controller and the controller sends signals to the gas generator when electric signals are ignited, and therefore ignition reliability is greatly improved.

Preferably, the hub is composed of the gas generator 7, the hollow spoke 5, the rim 4, the spare inner tube 3, the tire 2, the one-way valve switch 9 and the inflation inlet 8, when a user installs the gas generator 7 and the hub, the gas generator 7 is installed at the central position of the hub, when the tire is about to burst, the gas generator 7 can quickly ignite to generate gas, the gas can firstly pass through the one-way valve switch 9 in the middle of the hollow spoke 5 (the one-way valve switch 9 is in one-way transmission, so that the gas can be prevented from leaking downwards) and simultaneously opens and ventilate upwards and outwards, and when the gas passes through the one-way valve switch 9 and the inflation inlet 8, the spare inner tube 3 installed on the rim 4 can be directly inflated to form a new inner tube to replace the damaged tire 2 to continuously support the vehicle, so that the spare inner tube can be inflated emergently after burst, undertake the role of interim tire, provide sufficient braking process time for the driver, reduce and avoid the accident of blowing out, install gas generator 7 simultaneously and can play in the middle of wheel hub to wheel rotation balance, reduce the slope condition that removes unstability and lead to in the tire, thereby improved the utility model discloses a security.

The working principle is as follows:

firstly, when the gas generator 7 is operated and a user installs the gas generator 7 in the hub through the installation disc 10, the user firstly inflates the gas generator 7 to a preset pressure (tire burst early warning pressure, 200kPa is taken as the device), after the tire inflation is completed, the gas generator 7 and the tire 2 are in the same pressure environment through the hollow spoke 5, when the environment pressure is greater than the generator chamber pressure, the elastic element 17 generates compression deformation, the connection key 15 can isolate the firing pin chamber 12 from the firing pin chamber 12, and as the elastic element 17 and the connection key 15 are fixed through threads, once the tire burst occurs, the internal air pressure of the tire suddenly drops, and when the pressure drops to the preset pressure, the internal chamber pressure of the shell 11 begins to be greater than the environment pressure, the elastic element 17 pulls out the connection key 15 under the action of the internal and external pressure difference, the firing pin chamber 12 ejects the inside firing pin to the ignition powder 13 due to the fact that the connecting key 15 is lost to block and isolate the firing pin chamber 12, so that the firing pin chamber 12 is ignited by the striking pin, the firing pin chamber 12 ignites the main charge in the main charge chamber 14 through the fire transfer hole, the main charge generates gas after ignition and enters the inner cavity of the shell 11 through the air hole in the top of the main charge chamber 14, and then enters the hub for inflation and explosion prevention through the cooling filter assembly 19 in the inner cavity of the shell 11, and the common electric signal ignition is changed into mechanical ignition in the device, so that errors and time delay which are possibly generated when a monitor sends signals to a controller and a controller to a gas generator during electric signal ignition are avoided, and the ignition reliability is greatly improved;

then, when the gas generator 7 is started and transmits gas to the center of the hub, because a user installs the gas generator 7 and the hub, the gas generator 7 is installed at the center of the hub, when the tire is about to burst, the gas generator 7 can quickly ignite to generate gas, the gas can firstly pass through the one-way valve switch 9 in the middle of the hollow spoke 5 (the one-way valve switch 9 is in one-way transmission, so that the gas can be prevented from leaking downwards), and simultaneously opens and ventilates upwards and outwards, and when the gas passes through the one-way valve switch 9 and the inflation inlet 8, the gas can directly inflate the spare inner tube 3 installed on the rim 4 to form a new inner tube, so as to replace the damaged tire 2 to continue to support the vehicle, realize emergency inflation of the spare inner tube after burst, and play the role of a temporary tire, so as to provide enough braking processing time for a driver, the accident of tire burst is reduced and avoided, meanwhile, the gas generator 7 is arranged in the middle of the wheel hub, so that the wheel can be balanced in rotation in the tire, the inclination condition caused by unstable movement is reduced, and the safety of the utility model is improved;

then, when the elastic element 17 is deformed to start the gas generator 7, the elastic element 17 adopts a corrugated diaphragm which is deformed under pressure, the corrugated diaphragm is a pressure sensitive element which can move in the direction perpendicular to the flexibility of the corrugated diaphragm, and the flexible surface of the corrugated diaphragm has various corrugations relative to other diaphragms, and the thickness, strength and sensitivity of the corrugated diaphragm in the elastic element 17 can be designed according to the environmental pressure, working pressure, temperature and the like, so that the corrugated diaphragm can be attached to the inside of the device to be deformed under pressure;

when the gas generator 7 is started and the elastic element 17 is deformed, the cushion 16 has a certain buffering effect, so that when gas is generated inside the gas generator 7, the cushion 16 has a buffering effect on the contact between the device and the hub, and the condition that the gas rushes out from the inflating opening 8 to cause collision inside the gas generator 7 and cause damage is prevented;

finally, the spare inner tube 3 is the material for air bag, but increases the compressive strength and the material strength of spare inner tube 3 on air bag basis, thereby prevent that inflation pressure and foreign matter puncture from producing the condition of damage, the inner tube 3 also has certain gas tightness simultaneously, and easily fold and encapsulate, thereby conveniently guarantee urgent aerating device effective function, also the person of facilitating the use folds spare inner tube 3 simultaneously, this is exactly this kind of novel gasbag run-flat device's theory of operation.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the description is made in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art will recognize that the embodiments described in the various embodiments can be combined as appropriate to form other embodiments as would be understood by those skilled in the art.

Claims

1. The utility model provides a novel gasbag run-flat device, includes run-flat device main part (1), tire (2), spare inner tube of a tyre (3), rim (4) and gas generator (7), its characterized in that: the middle of the tire burst preventing device main body (1) is fixedly connected with a gas generator (7), two ends of the gas generator (7) are movably connected with hollow spokes (5), two sides of the top of each hollow spoke (5) are fixedly connected with a rim (4), the top end of each rim (4) is movably connected with a tire (2), the bottom of each hollow spoke (5) is connected with a bolt (6) in a penetrating manner, the bottom of each hollow spoke (5) is fixedly connected with a one-way valve switch (9), the top end of each one-way valve switch (9) is fixedly connected with an inflation inlet (8), the bottom of the gas generator (7) is movably connected with a mounting disc (10), the middle of the top end of the mounting disc (10) is fixedly connected with ignition powder (13), the top end of each ignition powder (13) is fixedly connected with a main powder charging chamber (14), and the top end of the mounting disc (10) is fixedly connected with, the bottom of the shell (11) is fixedly connected with a firing pin chamber (12), the top of the firing pin chamber (12) is fixedly connected with a connecting key (15), and the back of the shell (11) is fixedly connected with a cooling filter assembly (19).

2. A novel air bag runflat device according to claim 1, characterized in that: one side fixedly connected with nozzle (18) of connecting key (15), one side bottom fixedly connected with one-way venthole (20) of mounting disc (10), the top fixedly connected with hole (21) of pressurizing of main powder charge room (14).

3. A novel air bag runflat device according to claim 1, characterized in that: and a spare inner tube (3) is fixedly connected in the middle of the top of the hollow spoke (5).

4. A novel air bag runflat device according to claim 1, characterized in that: the top of the connecting key (15) is fixedly connected with a cushion pad (16).

5. A novel air bag runflat device according to claim 4, characterized in that: the top of the buffer pad (16) is fixedly connected with an elastic element (17).

6. A novel air bag runflat device according to claim 1, characterized in that: the gas generator (7) is composed of a mounting disc (10) at the bottom of the gas generator (7), ignition powder (13) in the middle of the top end of the mounting disc (10), a main powder loading chamber (14) at the top end of the ignition powder (13), a shell (11) at the top end of the mounting disc (10), a firing pin chamber (12) at the bottom of the shell (11), a connecting key (15) at the top of the firing pin chamber (12), an elastic element (17) at the top of a cushion pad (16) and a cooling and filtering assembly (19) behind the shell (11).

7. A novel air bag runflat device according to claim 1, characterized in that: the hub is composed of the gas generator (7), the hollow spoke (5), the rim (4), the spare inner tube (3), the tire (2), the one-way valve switch (9) and the inflation inlet (8).