Vehicle tire burst balance protection device and vehicle

Abstract

The utility model provides a vehicle tire burst balance protection device and a vehicle. The vehicle tire burst balance protection device comprises a tire pressure sensor, a controller, an air supply mechanism and a lifting mechanism. And the tire pressure sensor is connected with the controller. And the lifting mechanism lifts the telescopic rod through the curved bag, so that the vehicle body can be quickly supported at the moment of tire burst, and balance is recovered. The gas supply mechanism generates gas by heating a gas generating agent through the reaction cylinder and the ignition device, expansion power is provided for the gas bag and the curved bag, and the ignition device is connected with the controller. The device is not only suitable for an independent suspension system, but also suitable for a non-independent suspension system, and has a wide market prospect. The tire burst situation can be effectively handled, and the vehicle driving safety is ensured.

Description

Technical Field

[0001] The utility model relates to the field of automobile safety protection devices, in particular to a vehicle tire blowout balance protection device and a vehicle. Background Art

[0002] Among the traffic accidents on highways, 10% are caused by tire failure, and tire blowout accounts for more than 70% of the total accidents caused by tire failure. If a vehicle has a tire blowout while driving at high speed, it may cause the vehicle to lose control, roll over or cause a serious accident, posing a serious threat to the safety of vehicle passengers and other road users. Therefore, it is necessary to design a vehicle tire blowout balance protection device.

[0003] The Chinese utility model patent with application number 202222681289.0 discloses a tire blowout anti-deviation wheel, wherein a main inflation chamber is formed between the anti-deviation tire and the outer tire, and an anti-deviation inflation chamber is formed between the anti-deviation tire and the rim. The main inflation chamber and the anti-deviation inflation chamber are connected to the inflation hole at the same time, and the deviation can be prevented after a tire blowout by simply adjusting the wheel design.

[0004] The Chinese utility model patent with application number 201920402119.X discloses an instant support device for a motor vehicle tire blowout and pressure loss. A support structure is attached inside the tire, and the support device located on the surface of the wheel hub will instantly replace the air, support the tread, and offset the impact force between the tire and the ground, so that the tire can continue to remain in an expanded state after being slightly deformed due to pressure loss, support the body of the vehicle, and continue to rotate.

[0005] The Chinese utility model patent application number 200920021507.X discloses a motor vehicle explosion-proof tire rollover stabilization shock absorber, which replaces the existing motor vehicle shock absorber with a pneumatic cylinder structure shock absorber. The pneumatic cylinders are interconnected. Once the tire corresponding to a certain pneumatic cylinder bursts, each pneumatic cylinder will adjust the height of each wheel of the motor vehicle by adjusting its internal gas pressure, so that the motor vehicle body can restore balance instantly after the tire bursts.

[0006] Existing technologies for protecting vehicles from tire blowouts mainly include tire blowout-proof wheels, instant support devices, and tire blowout-proof rollover-stabilizing shock absorbers. These inventions modify the tire structure and add auxiliary support mechanisms to maintain vehicle stability and reduce the risk of loss of control at the moment of a tire blowout. However, these technologies still face limitations:

[0007] 1. The prior art designs many motor vehicle tires, but when a tire blows out, the additional structure of the tire has limited expansion space, and it is difficult to reach the height of the vehicle body before the tire blows out.

[0008] 2. The designed shock absorber is mainly suitable for non-independent suspension systems. The wheels on the left and right sides are entangled with each other when bouncing, which cannot provide good comfort and controllability. Utility Model Content

[0009] In view of the technical problems in the existing vehicle tire blowout protection technology that it is difficult to restore the vehicle body height before the tire blowout and it is difficult to adapt to the independent suspension system, the utility model provides a vehicle tire blowout balance protection device and a vehicle. The vehicle tire blowout balance protection device can support the vehicle body at the moment of tire blowout, so that the vehicle body can quickly restore balance at the tire blowout point, and the vehicle tire blowout balance protection device can be applicable to independent suspension systems and non-independent suspension systems, and has broad application prospects.

[0010] The utility model achieves the above technical purpose through the following technical means.

[0011] A vehicle tire blowout balance protection device comprises a tire pressure sensor, a controller, an air supply mechanism and a lifting mechanism; a vehicle axle for connecting wheels on both sides is arranged under the vehicle body along the vehicle width direction, and shock absorbers for connecting the vehicle body and the axle are arranged on the top of both sides of the axle along the vehicle height direction;

[0012] The tire pressure sensor is connected to the controller;

[0013] The lifting mechanism comprises a cylinder, a telescopic rod, an upper cover plate, a lower cover plate and a curved bag; the cylinder is vertically mounted on the top of one side of the axle; the lower cover plate is assembled on the top of the cylinder, and a center hole is provided on both the upper cover plate and the lower cover plate; the telescopic rod is slidably arranged in the cylinder, and the top of the telescopic rod is fixed to the bottom of the vehicle body after passing through the center hole on the lower cover plate; the curved bag and the upper cover plate are slidably sleeved on the telescopic rod, and the upper cover plate, the curved bag and the lower cover plate are arranged in sequence from top to bottom on the telescopic rod; a support pin is transversely mounted on the telescopic rod above the upper cover plate, and the length of the support pin is greater than the diameter of the center hole on the upper cover plate; an air bag is arranged inside the curved bag, and the curved bag and the air bag are both in a compressed state when there is no tire burst, and the expansion direction of the curved bag and the air bag is consistent with the lifting direction of the telescopic rod;

[0014] The gas supply mechanism comprises a reaction cylinder and an ignition device; a gas generating agent is contained in the reaction cylinder, and the inner cavity of the reaction cylinder is connected with the air bag through a hose; and the ignition device is connected with a controller.

[0015] Furthermore, a piston is slidably mounted in the cylinder, and the piston is connected to the bottom of the telescopic rod.

[0016] Furthermore, the gas generating agent is sodium azide.

[0017] Furthermore, the heating temperature of the ignition device is not less than 300°C.

[0018] Furthermore, the airbag is filled with iron oxide.

[0019] Furthermore, the curved bladder is composed of an inner rubber layer, a middle cloth layer and an outer rubber layer, and the middle cloth layer is made of high-strength flexible synthetic fiber cloth.

[0020] Furthermore, gaps are left between the upper cover plate, the curved bag, the lower cover plate and the telescopic rod.

[0021] Furthermore, the curved bag and the air bag are in an hourglass shape in an expanded state, and the waist thereof is gathered inward; the top of the curved bag is connected to the bottom of the upper cover plate, and the bottom of the curved bag is connected to the top of the lower cover plate.

[0022] Furthermore, the maximum working stroke of the shock absorber is not less than the maximum working stroke of the telescopic rod; in the non-tire blowout stage, the support pin on the telescopic rod does not contact the upper cover plate.

[0023] A vehicle equipped with any one of the above described vehicle tire blowout balance protection devices.

[0024] The vehicle tire blowout balance protection device of the utility model can monitor the tire blowout in time through the tire pressure sensor, and use the ignition device to heat the gas generating agent, so that it decomposes and releases a large amount of gas and fills the airbag. The inflated airbag pushes the upper cover plate through the curved bag, and the upper cover plate drives the telescopic rod to lift upward after contacting the support pin, thereby lifting the side of the vehicle body collapsed due to the tire blowout, so that the vehicle body can quickly maintain the balance and avoid lateral deviation as much as possible, providing the driver with time to brake and stop.

[0025] The beneficial effects of the utility model are as follows:

[0026] 1. The utility model realizes real-time monitoring of tire status through tire pressure sensors, effectively shortening the time interval from the occurrence of a tire blowout to the taking of countermeasures.

[0027] 2. The utility model activates the gas generating agent through an ignition device to release gas to fill the airbag. The rapid expansion of the airbag can immediately lift the side of the vehicle body that has sunk due to a tire blowout, effectively maintain the balance of the vehicle during driving, reduce the risk of vehicle skidding or loss of control caused by a tire blowout, and improve driving safety.

[0028] 3. The utility model lifts the vehicle body through the supporting force provided by the curved bag and the air bag, which not only provides immediate and effective supporting force for the vehicle body at the moment of tire burst, but also can well maintain the shock absorbing effect of the shock absorber during the lifting process, avoiding the interference of traditional rigid support on the shock absorber function, thereby avoiding secondary vibration caused by rigid impact and maintaining the stability and comfort of vehicle driving.

[0029] 4. The vehicle tire blowout balance protection device in the utility model is particularly suitable for independent suspension systems. This design can not only better adapt to different road conditions, but also improve the vehicle's handling stability and ride comfort, providing users with a higher level of driving experience.

[0030] 5. The curved bag in the utility model will not interfere with the normal operation of the shock absorber in the non-flat tire state, ensuring the stability and comfort of the vehicle during driving, so that the device has no negative impact on the daily driving experience when it is not activated.

[0031] 6. The vehicle tire blowout balance protection device of the utility model has a compact design, which reduces the need for large-scale changes to the original structure of the vehicle and is easy to install and maintain. At the same time, due to the simplicity of its design and the effective use of materials, the production cost is relatively low, which is conducive to market popularization and application promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The utility model is a schematic structural diagram of the vehicle tire blowout balance protection device (before tire blowout).

[0033] Figure 2 The utility model is a schematic structural diagram of the vehicle tire blowout balance protection device (after tire blowout) of the present invention.

[0034] Figure 3 It is a structural schematic diagram of the lifting mechanism and the air supply mechanism (before tire burst) of the utility model.

[0035] Figure 4 It is a structural schematic diagram of the lifting mechanism and the air supply mechanism (after a tire burst) of the utility model.

[0036] Figure 5 The utility model is a working principle diagram of the vehicle tire blowout balance protection device.

[0037] The reference numerals are as follows:

[0038] 1- telescopic rod; 2- supporting pin; 3- upper cover plate; 4- hose; 5- reaction cylinder; 6- ignition device; 7- curved bag; 8- air bag; 9- lower cover plate; 10- piston; 11- cylinder. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0040] The vehicle tire blowout balance protection device of this embodiment includes a tire pressure sensor (not shown), a controller, an air supply mechanism and a lifting mechanism. A bridge for connecting the wheels on both sides is arranged under the vehicle body along the vehicle width direction, and shock absorbers for connecting the vehicle body and the bridge are arranged on the top of both sides of the bridge along the vehicle height direction. Figure 1 It is a schematic structural diagram of the vehicle tire blowout balance protection device (before tire blowout) described in this embodiment.

[0041] The tire pressure sensor is connected to the controller.

[0042] The lifting mechanism includes a cylinder 11 (hollow inside), a piston 10, a telescopic rod 1, a lower cover plate 9, a curved bag 7 and an upper cover plate 3. The cylinder 11 is vertically installed on the top of one side of the axle, and the cylinder 11 has openings at both ends. The piston 10 is slidably installed in the cylinder 11. The lower cover plate 9 is assembled on the top of the cylinder 11, and a center hole is provided on both the upper cover plate 3 and the lower cover plate 9. One end of the telescopic rod 1 is connected to the piston 10, and the other end passes through the center hole on the lower cover plate 9 and is fixed to the bottom of the vehicle body. The curved bag 7 and the upper cover plate 3 are slidably sleeved on the telescopic rod 1, and the upper cover plate 3, the curved bag 7, and the lower cover plate 9 are arranged in sequence from top to bottom on the telescopic rod 1, the top of the curved bag 7 is connected to the bottom of the upper cover plate 3, and the bottom of the curved bag 7 is connected to the top of the lower cover plate 9, and there is a gap between the upper cover plate 3, the curved bag 7, the lower cover plate 9 and the telescopic rod 1, so that the telescopic rod 1 can slide relative to the upper cover plate 3, the curved bag 7, and the lower cover plate 9. A support pin 2 is transversely mounted on the telescopic rod 1 above the upper cover plate 3, and the length of the support pin 2 is greater than the diameter of the center hole on the upper cover plate 3, so that when the upper cover plate 3 slides to the support pin 2 under the expansion of the curved bag 7, the entire telescopic rod 1 can be lifted upward with the help of the support pin 2. The curved bag 7 is composed of an inner rubber layer, an intermediate cloth layer and an outer rubber layer. The material of the intermediate cloth layer is a high-strength flexible synthetic fiber cloth with high-strength elasticity. An airbag 8 is arranged inside the curved bag 7. The curved bag 7 and the airbag 8 are both in a compressed state when there is no tire blowout. The curved bag 7 and the airbag 8 are hourglass-shaped in the expanded state, and their waists are gathered inward. The expansion direction of the curved bag 7 and the airbag 8 is consistent with the lifting direction of the telescopic rod 1, and the telescopic rod 1 can be quickly propped up when the inflated airbag 8 bulges. Figure 2 It is a schematic structural diagram of the vehicle tire blowout balance protection device (after tire blowout) described in this embodiment.

[0043] The gas supply mechanism includes a reaction cylinder 5 and an ignition device 6. The reaction cylinder 5 contains sodium azide, and the inner cavity of the reaction cylinder 5 is connected to the air bag 8 through a hose 4. The ignition device 6 is connected to a controller, and the heating temperature of the ignition device 6 is not less than 300°C. The sodium azide in the reaction cylinder 5 will undergo the following chemical reaction at high temperature: 2NaN 3 =2Na+3N 2↑, a large amount of nitrogen is generated and enters the airbag 8. Figure 3 Schematic diagram of the structure of the lifting mechanism and the air supply mechanism (before tire burst) described in this embodiment. Figure 4 It is a schematic structural diagram of the lifting mechanism and the air supply mechanism (after a tire burst) described in this embodiment.

[0044] In order to solve the problem that the travel limit of the shock absorber may hinder the telescopic rod 1 from restoring the vehicle body to the height before the tire burst, the present embodiment specially designs the working travel range of the telescopic rod 1 to ensure that the maximum working travel of the shock absorber is not less than the maximum working travel of the telescopic rod 1. This ensures that the telescopic rod can be fully extended to raise the vehicle body when necessary. In addition, considering that when the vehicle is driving normally (i.e., no tire burst occurs), in order to prevent the vehicle body from generating unnecessary pressure on the upper cover plate 3, the curved bladder 7, the cylinder 11 and other components through the support pin 2 on the telescopic rod 1 due to gravity, the present embodiment allows a certain distance to be maintained between the support pin 2 and the upper cover plate 3 in the case of no tire burst, so as not to form direct contact, so as to avoid the above-mentioned structure from being affected by unnecessary pressure, thereby ensuring the normal function and service life of each component.

[0045] In order to prevent a small amount of sodium generated by the decomposition of sodium azide from flowing into the airbag 8 with the airflow and ablating the airbag 8, a small amount of iron oxide is installed in the airbag 8 in this embodiment to react with metallic sodium. The chemical reaction equation is as follows: Fe 2 O 3 +6Na=3Na 2 O+2Fe, the generated iron is non-corrosive.

[0046] The working principle of the vehicle tire blowout balance protection device described in this embodiment is as follows: when a tire blows out on a motor vehicle, the air pressure in the tire drops sharply, and the tire pressure sensor can detect the rapid change of the tire pressure in real time. Then the ignition device 6 is turned on, and the sodium azide in the reaction cylinder 5 is rapidly decomposed at high temperature to produce a large amount of nitrogen and enter the airbag 8, so that the airbag 8 together with the curved bag 7 swells and pushes the upper cover plate 3. When the upper cover plate 3 slides to the support pin 2, the support pin 2 can be used to limit the entire telescopic rod 1 to lift upward, so that the vehicle body on the side of the tire blowout is lifted to the height before the tire blowout within the maximum working stroke of the shock absorber, thereby achieving balance on both sides of the vehicle body. Figure 5 This is a working principle diagram of the vehicle tire blowout balance protection device described in this embodiment.

[0047] Furthermore, the present embodiment also relates to a vehicle equipped with the above-mentioned vehicle tire blowout balance protection device.

[0048] The embodiments are preferred implementations of the present invention, but the present invention is not limited to the above-mentioned implementations. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essential content of the present invention belong to the protection scope of the present invention.

Claims

1. A vehicle tire blowout balance protection device, characterized in that: It includes a tire pressure sensor, a controller, an air supply mechanism and a lifting mechanism; a vehicle axle for connecting the wheels on both sides is arranged under the vehicle body along the vehicle width direction, and shock absorbers for connecting the vehicle body and the axle are arranged on the top of both sides of the axle along the vehicle height direction; The tire pressure sensor is connected to the controller; The lifting mechanism comprises a cylinder (11), a telescopic rod (1), an upper cover plate (3), a lower cover plate (9) and a curved bag (7); the cylinder (11) is vertically mounted on the top of one side of the axle; the lower cover plate (9) is assembled on the top of the cylinder (11), and a center hole is provided on both the upper cover plate (3) and the lower cover plate (9); the telescopic rod (1) is slidably arranged in the cylinder (11), and the top of the telescopic rod (1) passes through the center hole on the lower cover plate (9) and is fixed to the bottom of the vehicle body; the curved bag (7) and the upper cover plate (3) are slidably sleeved. The telescopic rod (1) is provided with an upper cover plate (3), a curved bag (7) and a lower cover plate (9) arranged in sequence from top to bottom on the telescopic rod (1); a support pin (2) is transversely mounted on the telescopic rod (1) above the upper cover plate (3), and the length of the support pin (2) is greater than the diameter of the center hole on the upper cover plate (3); an air bag (8) is arranged inside the curved bag (7), and the curved bag (7) and the air bag (8) are both in a compressed state when there is no tire blowout, and the expansion direction of the curved bag (7) and the air bag (8) is consistent with the lifting direction of the telescopic rod (1); The gas supply mechanism comprises a reaction cylinder (5) and an ignition device (6); a gas generating agent is contained in the reaction cylinder (5), and the inner cavity of the reaction cylinder (5) is connected to the air bag (8) through a hose (4); and the ignition device (6) is connected to a controller.

2. The vehicle tire blowout balance protection device according to claim 1, characterized in that: A piston (10) is slidably mounted in the cylinder (11), and the piston (10) is connected to the bottom of the telescopic rod (1).

3. The vehicle tire blowout balance protection device according to claim 1, characterized in that: The gas generating agent is sodium azide.

4. The vehicle tire blowout balance protection device according to claim 1, characterized in that: The heating temperature of the ignition device (6) is not less than 300°C.

5. The vehicle tire blowout balance protection device according to claim 1, characterized in that: The air bag (8) is filled with iron oxide.

6. The vehicle tire blowout balance protection device according to claim 1, characterized in that: The curved bladder (7) is composed of an inner rubber layer, a middle cloth layer and an outer rubber layer, and the middle cloth layer is made of high-strength flexible synthetic fiber cloth.

7. The vehicle tire blowout balance protection device according to claim 1, characterized in that: Gaps are left between the upper cover plate (3), the curved bag (7), the lower cover plate (9) and the telescopic rod (1).

8. The vehicle tire blowout balance protection device according to claim 1, characterized in that: The curved bag (7) and the air bag (8) are in an hourglass shape when inflated, with the waist thereof being gathered inwards; the top of the curved bag (7) is connected to the bottom of the upper cover plate (3), and the bottom of the curved bag (7) is connected to the top of the lower cover plate (9).

9. The vehicle tire blowout balance protection device according to claim 1, characterized in that: The maximum working stroke of the shock absorber is not less than the maximum working stroke of the telescopic rod (1); in the non-tire blowout stage, the support pin (2) on the telescopic rod (1) does not contact the upper cover plate (3).

10. A vehicle, characterized in that: The vehicle is equipped with the vehicle tire blowout balance protection device according to any one of claims 1 to 9.

Images