Vehicle collision protection device

Abstract

The utility model discloses a vehicle collision protection device which comprises a collision detection device installed on a vehicle body and used for detecting the collision force borne by the vehicle body; the inflating device and the protective air bag are connected with each other; the controller comprises a force detection module and an inflation control module, the force detection module is in communication connection with the collision detection device and used for obtaining the collision force detected by the collision detection device, and the inflation control module is in communication connection with a force judgment module and used for judging the collision force detected by the collision detection device. The inflation control module is configured to control the inflation device to work according to the collision strength obtained by the strength detection module; and through deformation of the protective air bag, splashing of fragments can be rapidly isolated and protected in a collision event, and the situation that the fragments splash outwards to cause loss and damage to personnel and properties outside the automobile is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile assembly, and particularly relates to a vehicle collision protection device. Background Art

[0002] In the rapidly developing modern transportation system, as one of the most important means of transportation, the safety performance of automobiles is directly related to people's lives and property safety. With the continuous increase in the total number of automobiles, the incidence of automobile collision accidents has also risen, becoming a social problem that cannot be ignored. At the moment of a car collision, a huge impact force will be generated, which will not only cause serious damage to the vehicle structure, resulting in deformation of the vehicle body, fragmentation of the car body and windows, but may also trigger a series of chain reactions, such as flying debris and fuel leakage. These consequences often exacerbate the severity of the accident. Among them, sharp and hard debris flying outwards is like flying blades, which will pose a serious threat to the people, other vehicles and even road facilities around the accident, triggering more serious traffic accidents.

[0003] At present, automotive safety design mainly focuses on protecting the occupants in the vehicle during a collision. For example, by strengthening the vehicle body structure, installing airbags, pre-tensioning seat belts and other devices to reduce the direct harm of the collision to the occupants in the vehicle. However, for the situation where debris from components such as the car body and windows of the vehicle splashes outwards during the collision process, the traditional automotive safety design does not involve the function of preventing debris from splashing outwards, thus making the safety of people outside the vehicle, other surrounding vehicles and facilities unable to be guaranteed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a vehicle collision protection device to solve the problem that in the prior art, debris splashing from components such as the car body and windows of the vehicle during the collision process poses a threat to the life and property safety of people around the vehicle.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A vehicle collision protection device, comprising:

[0007] A collision detection device, which is installed on the vehicle body and is used to detect the collision force received by the vehicle body;

[0008] An inflation device and a protective airbag, the inflation device and the protective airbag are connected, the inflation device is configured to be able to inflate gas into the protective airbag so that the protective airbag expands until it ruptures, and the protective airbag is configured to form an isolation layer after inflating and rupturing, so as to wrap the flying objects generated by the collision on the vehicle body surface;

[0009] A controller, the controller includes a force detection module and an inflation control module. The force detection module is communicatively connected to the collision detection device for obtaining the collision force detected by the collision detection device. The inflation control module is communicatively connected to the force judgment module, and the inflation control module is configured to be able to control the inflation device to work according to the collision force obtained by the force detection module.

[0010] According to the above technical means, the inflation device is controlled by the collision detection device and the controller to drive the deformation of the airbag, so that the airbag can quickly isolate and protect the fragments splashed from components such as the vehicle body shell and windows during the collision event, preventing the fragments from splashing out and threatening the lives of people around the vehicle and the property safety of other vehicles and facilities around, avoiding further property losses and personal injuries. Specifically, when a collision occurs, the force detection module transmits the collision force signal detected by the collision detection device to the inflation control module, and the inflation control module controls the inflation device to inflate the airbag, so that the airbag quickly expands until it bursts. Then the airbag unfolds and contracts in the reverse direction of inflation and adheres to the vehicle body surface to form a tough isolation layer, wrapping the splashes generated by the collision on the vehicle body surface, greatly reducing the situation of fragments splashing out, reducing the loss of property and personal injuries around the vehicle, and improving the overall safety performance of the vehicle.

[0011] Further, a collision force threshold is preset in the inflation control module.

[0012] According to the above technical means, a collision force threshold is set as a standard reference value for the force detection module to judge the collision force detected by the collision detection device, so as to facilitate the inflation control module to control the inflation device to quickly inflate the airbag and achieve its protection effect in actual collision events.

[0013] Further, the inflation control module is configured to, when the collision detection device detects that the collision force received by the vehicle body is greater than the preset collision force threshold, control the inflation device to fill the airbag with gas so that the airbag expands and unfolds until it bursts.

[0014] According to the above technical means, when the collision force detected by the collision detection device exceeds the preset collision force threshold, the force detection module will immediately judge it as a serious collision event, so that the inflation control module controls the inflation device to start the inflation work, enabling the airbag to quickly inflate, expand and burst at the most critical moment. Then the reverse contraction of the airbag film adheres to the vehicle body surface to form a tough isolation layer, firmly wrapping the splashes generated by the collision on the vehicle body surface, thereby minimizing the potential harm to people and property outside the vehicle.

[0015] Further, it further includes a buffer airbag, which is connected to an inflation device. The inflation control module is further configured to control the inflation device to fill the buffer airbag with gas when the collision detection device detects that the collision force on the vehicle body is greater than a preset collision force threshold, so that the buffer airbag expands to reduce the direct damage of the collision impact force to the passengers in the vehicle. The principle of this technical means is the same as that of the current car airbag, and will not be described in detail here.

[0016] Further, the inflation device includes an igniter and a gas generator. The igniter is drivingly connected to the gas generator and is used to drive the gas generator to start to generate gas. The gas generator is formed with a first inflation channel and a second inflation channel. The protection airbag is connected to the gas generator through the first inflation channel, and the buffer airbag is connected to the gas generator through the second inflation channel. The inflation control module is connected to the igniter for control.

[0017] According to the above technical means, the gas generator is connected to the protection airbag and the buffer airbag through the first inflation channel and the second inflation channel respectively, which can realize that the same gas generator independently inflates the protection airbag and the buffer airbag respectively, ensuring the smoothness of inflation, preventing interference and malfunctions, and at the same time can achieve the purpose of independently controlling the inflation amount in the protection airbag or the buffer airbag. Using the same gas generator to inflate the two airbags respectively has fewer additional parts, occupies less space, and has high practicability. When the collision detection device detects that the collision force exceeds the preset collision force threshold, the inflation control module controls the igniter to quickly activate and ignite the gas generating agent in the gas generator, so as to generate gas and fill the protection airbag and the buffer airbag through the first inflation channel and the second inflation channel respectively, so that the protection airbag expands and ruptures to form an isolation layer to prevent debris from splashing out and causing damage to the people and property outside the vehicle, and the buffer airbag expands to form a buffer layer to provide buffer protection for the passengers in the vehicle, improving the overall safety of the vehicle.

[0018] Further, the protection airbag is a thin film bag made of modified polyvinyl acetate.

[0019] According to the above technical means, since modified polyvinyl acetate has excellent film-forming properties, low cost, good adhesiveness, excellent weather resistance and other advantages, the thin film bag made of modified polyvinyl acetate not only has excellent flexibility and impact resistance, can quickly inflate and expand to rupture at the moment of collision to form an isolation layer to wrap the flying objects and reduce the harm to the people outside the vehicle and the surrounding property, but also its good heat resistance and weather resistance ensure that the protection airbag can maintain stable performance in various extreme environments. Moreover, the thin film bag has a light weight and high strength, which helps to reduce the overall weight of the vehicle while ensuring the protection effect.

[0020] Further, a heater is installed in the first inflation passage for heating the gas filled into the protection airbag.

[0021] According to the above technical means, the film bladder made of modified polyvinyl acetate maintains high rigidity and brittleness at normal temperature, and will not stick to each other or deform. However, it will undergo a glass transition under heating conditions, changing from a solid state to an elastic state with adhesiveness, toughness and softness. Heating promotes the protection airbag to become an isolation layer with compressive and tear-resistant capabilities after rupture. At the same time, the adhesive isolation layer can firmly wrap the flying fragments. When the gas generator inflates the protection airbag through the first inflation passage, the heater starts to make the gas filled into the gas generator heated gas, so that the film bladder undergoes a glass transition.

[0022] Further, the heating temperature of the heater is 48 °C.

[0023] According to the above technical means, heating heats the gas filled into the protection airbag to 48 °C, enabling the protection airbag to undergo sufficient glass transition and avoiding damage to the overall vehicle body caused by high temperature.

[0024] Further, the gases filled into the protection airbag and the buffer airbag are both nitrogen.

[0025] According to the above technical means, nitrogen has high stability and is non-toxic, harmless to the external environment and personnel outside the vehicle.

[0026] Further, the buffer airbag is made of nylon.

[0027] According to the above technical means, nylon has the advantages of high strength, durability, good elasticity and recovery, weather resistance and chemical stability, and is easy to process and form. The buffer airbag made of nylon can play a buffering role during vehicle collisions, effectively protecting the occupants in the vehicle from harm and improving the overall safety performance of the vehicle.

[0028] The beneficial effects achieved by the present utility model:

[0029] The utility model controls the deformation drive of the inflatable device for the protective airbag through the collision detection device and the controller, so that the protective airbag can quickly isolate and protect the fragments splashed from components such as the vehicle body shell and windows during the collision event, preventing the fragments from splashing out and threatening the lives of the people around the vehicle and the property safety of other vehicles and facilities around, avoiding further property losses and personal injuries. Specifically, when a collision occurs, the collision force signal detected by the collision detection device is transmitted to the inflation control module through the force detection module, and the inflation control module controls the inflatable device to inflate the protective airbag, so that the protective airbag quickly expands until it bursts. Thus, the protective airbag unfolds and contracts along the reverse direction of inflation and adheres to the vehicle body surface to form a tough isolation layer, wrapping the splashes generated by the collision on the vehicle body surface, greatly reducing the situation of fragments splashing out, reducing the loss of property around the vehicle and the injury of personnel, and improving the overall safety performance of the vehicle. Description of the Drawings

[0030] Figure 1 It is a schematic structural diagram of the whole utility model;

[0031] Figure 2 It is a logical schematic diagram of the utility model when a collision occurs.

[0032] Among them, 1 - collision detection device; 2 - inflatable device; 21 - igniter; 22 - gas generator; 3 - protective airbag; 4 - controller; 41 - force detection module; 42 - inflation control module; 5 - buffer airbag.

[0033] The drawings are only for illustrative purposes and should not be construed as a limitation of this patent; in order to better illustrate the utility model, some components in the drawings will be omitted, enlarged or reduced, which does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted; the same or similar reference numerals correspond to the same or similar components; the terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as a limitation of this patent. Detailed Embodiment

[0034] The following will illustrate the embodiments of the present utility model with reference to the drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be understood that the preferred embodiments are only for illustrating the present utility model, rather than for limiting the protection scope of the present utility model.

[0035] It should be noted that the illustrations provided in the following embodiments only schematically illustrate the basic concept of the present utility model. Therefore, only the components related to the present utility model are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The types, quantities, and proportions of the components in actual implementation can be arbitrarily changed, and the layout type of the components may also be more complex.

[0036] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or integrated; it can be directly connected or indirectly connected through an intermediate medium.

[0037] In the embodiments of the present application, the terms "include", "comprise", or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article, or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article, or device including that element.

[0038] The technical solutions of the present utility model will be described in detail below with reference to specific drawings.

[0039] This embodiment relates to a vehicle collision protection device, as Figure 1 shown, including: a collision detection device 1, which is installed on the vehicle body and is used to detect the collision force received by the vehicle body; an inflation device 2 and an airbag 3, the inflation device 2 and the airbag 3 are connected, the inflation device 2 is configured to be able to inflate gas into the airbag 3 so that the airbag 3 expands until it bursts, and the airbag 3 is configured to form an isolation layer after inflating and bursting to wrap the flying objects generated by the collision on the vehicle body surface; a controller 4, the controller 4 includes a force detection module 41 and an inflation control module 42, the force detection module 41 is communicatively connected to the collision detection device 1 and is used to obtain the collision force detected by the collision detection device 1, and the inflation control module 42 is communicatively connected to the force judgment module 41, and the inflation control module 42 is configured to be able to control the operation of the inflation device 2 according to the collision force obtained by the force detection module 41.

[0040] In this embodiment, an isolation layer is formed by the inflation and rupture of the inflatable protection airbag 3. During a collision event, it can quickly isolate and protect against the flying debris generated by components such as the vehicle body shell and windows during the collision process, preventing the flying debris from posing a threat to the lives of people around the vehicle and the property safety of other vehicles and facilities in the vicinity, avoiding further property losses and personal injuries. Specifically, as a preferred implementation, a collision force threshold is preset in the inflation control module 42; the inflation control module 42 is configured to control the inflation device 2 to fill the airbag 3 with gas when the collision detection device 1 detects that the collision force received by the vehicle body is greater than the preset collision force threshold, so that the airbag 3 expands until it ruptures and unfolds.

[0041] During a collision, as Figure 2 shown, the collision detection device 1 transmits the detected collision force signal to the force detection module 41. When the collision force obtained by the force detection module 41 exceeds the preset collision force threshold, the force detection module 41 immediately determines it as a severe collision event. Then, based on the judgment result of the force detection module 41, the inflation control module 42 controls the inflation device 2 to inflate the airbag 3, causing the airbag 3 to quickly expand until it ruptures, and then unfold and contract along the reverse direction of inflation and attach to the vehicle body surface to form a tough isolation layer, firmly wrapping the flying debris generated by the collision (such as fragments of the vehicle body shell and windows) on the vehicle body surface, greatly reducing the situation of debris flying outwards, reducing the loss of property and personal injuries around the vehicle, and improving the overall safety performance of the vehicle and the survival probability in an accident; those skilled in the art can understand that the preset collision force threshold can be adjusted correspondingly according to the vehicle condition to adapt to different vehicle models, and the isolation layer formed by the rupture and unfolding of the airbag 3 also has the effect of preventing secondary injuries to the vehicle occupants inside the vehicle by the flying debris.

[0042] In this embodiment, a buffer airbag 5 is further included. The buffer airbag 5 is connected to the inflation device 2, and the inflation control module 42 is further configured to control the inflation device 2 to fill the buffer airbag 5 with gas when the collision detection device 1 detects that the collision force received by the vehicle body is greater than the preset collision force threshold, so that the buffer airbag 5 expands.

[0043] As Figure 1As shown, the inflated buffer airbag in this embodiment is used to buffer the impact force generated by a collision, providing buffer protection for the occupants in the vehicle, effectively reducing the impact damage to the heads and chests of the occupants in the vehicle. Moreover, the same inflation device is used to inflate the buffer airbag and the protection airbag, thereby achieving dual protection for both inside and outside the vehicle. It has high practicality, small occupied space, and improves the overall safety performance of the vehicle. Specifically, as a preferred embodiment, the buffer airbag 5 is made of nylon. When a collision occurs and the force detection module 41 detects that the collision force transmitted by the collision detection device 1 exceeds the preset collision force threshold, the force detection module 41 will immediately determine it as a serious collision event. According to the judgment result of the force detection module 41, the inflation control module 42 not only quickly activates the inflation device 2 to inflate the protection airbag 3 to prevent the generated fragments from splashing outwards, reducing the damage to people and property outside the vehicle, but also the inflation control module 42 will instruct the inflation device 2 to inflate the buffer airbag 5, causing it to quickly expand to serve as a buffer layer to absorb the impact force generated by the collision, reducing the impact acceleration received by the occupants in the vehicle, and reducing the direct damage of the impact force to the occupants and the vehicle body. And as can be understood by those skilled in the art, the inflation control module 42 can control the inflation amounts of the protection airbag 3 and the buffer airbag 5 respectively according to the preset program.

[0044] In this embodiment, the inflation device 2 includes an igniter 21 and a gas generator 22. The igniter 21 is drivingly connected to the gas generator 22 and is used to drive the gas generator 22 to start to generate gas. The gas generator 22 is formed with a first inflation channel and a second inflation channel. The protection airbag 3 is connected to the gas generator 22 through the first inflation channel, and the buffer airbag 5 is connected to the gas generator 22 through the second inflation channel. The inflation control module 42 is control-connected to the igniter 21.

[0045] As Figure 1 shown, in this embodiment, the gas generator 22 is respectively connected to the protection airbag and the buffer airbag through the first inflation channel and the second inflation channel, realizing the use of the same gas generator to inflate the two airbags respectively. The number of additional accessories is small, the occupied space is small, and the practicality is high. In actual application, switches can be respectively arranged in the first inflation channel and the second inflation channel, and the two switches are respectively control-connected to the inflation control module 42. The inflation control module 42 can respectively control the two switches to open or close the inflation channels, thereby being able to independently inflate the protection airbag 3 and the buffer airbag 5 and the inflation amounts, ensuring the smoothness and controllability of inflation and improving the practicality. Specifically, as a preferred embodiment, the gas generated by the gas generator 22 is nitrogen; the protection airbag 3 is a thin film bag processed from modified polyvinyl acetate; a heater is installed in the first inflation channel for heating the gas filled into the protection airbag 3; the heating temperature of the heater is 48°C;

[0046] When a collision occurs and the force detection module 41 detects that the collision force transmitted by the collision detection device 1 exceeds the preset collision force threshold, the force detection module 41 immediately determines it as a severe collision event. According to the judgment result of the force detection module 41, the inflation control module 42 controls the igniter 21 to quickly activate and ignite the gas generating agent in the gas generator 22, thereby generating a large amount of nitrogen. A part of the nitrogen passes through the first inflation channel and is heated to 48 °C by the heater and then inflates the airbag 3, causing the airbag 3 to expand until it ruptures, and unfolds to form an adhesive and flexible isolation layer attached to the vehicle body surface, wrapping the flying objects generated by the collision on the vehicle body surface to prevent the fragments from splashing out and causing damage to the personnel and property outside the vehicle. At the same time, another part of the nitrogen inflates the buffer airbag 5 through the second inflation channel, causing the buffer airbag 5 to expand to form a buffer layer to provide buffer protection for the occupants in the vehicle. Through the dual protection of the airbag 3 and the buffer airbag 5 for both inside and outside the vehicle, the overall safety performance of the vehicle is improved.

[0047] The serial numbers of the embodiments of the present application above are only for description and do not represent the superiority or inferiority of the embodiments. The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A vehicle collision protection device, characterized in that, Including: A collision detection device (1), which is installed on the vehicle body and used to detect the collision force received by the vehicle body; An inflation device (2) and an airbag (3), the inflation device (2) and the airbag (3) are connected, the inflation device (2) is configured to be able to inflate the airbag (3) with gas so that the airbag (3) expands until it bursts, and the airbag (3) is configured to form an isolation layer after inflating and bursting to wrap the flying objects generated by the collision on the vehicle body surface; A controller (4), the controller (4) includes a force detection module (41) and an inflation control module (42), the force detection module (41) is communicatively connected to the collision detection device (1) and used to obtain the collision force detected by the collision detection device (1), the inflation control module (42) is communicatively connected to the force detection module (41), and the inflation control module (42) is configured to be able to control the operation of the inflation device (2) according to the collision force obtained by the force detection module (41).

2. The vehicle collision protection device according to claim 1, wherein, A collision force threshold is preset in the inflation control module (42).

3. The vehicle collision protection device according to claim 2, characterized in that The inflation control module (42) is configured to when the collision detection device (1) detects that the collision force received by the vehicle body is greater than the preset collision force threshold, the inflation control module (42) controls the inflation device (2) to inflate the airbag (3) with gas so that the airbag (3) expands until it bursts and unfolds.

4. The vehicle collision protection device according to claim 3, wherein It further includes a buffer airbag (5), the buffer airbag (5) is connected to the inflation device (2), and the inflation control module (42) is also configured to when the collision detection device (1) detects that the collision force received by the vehicle body is greater than the preset collision force threshold, the inflation control module (42) controls the inflation device (2) to inflate the buffer airbag (5) with gas so that the buffer airbag (5) expands.

5. The vehicle collision protection device according to claim 4, characterized in that, The inflation device (2) includes an igniter (21) and a gas generator (22), the igniter (21) is drivingly connected to the gas generator (22) and used to drive the gas generator (22) to start to generate gas, the gas generator (22) is formed with a first inflation channel and a second inflation channel, the airbag (3) is connected to the gas generator (22) through the first inflation channel, the buffer airbag (5) is connected to the gas generator (22) through the second inflation channel, and the inflation control module (42) is control-connected to the igniter (21).

6. The vehicle collision protection device according to claim 5, characterized in that, The airbag (3) is a thin film bag made of modified polyvinyl acetate.

7. The vehicle collision protection device according to claim 6, characterized in that, A heater is installed in the first inflation channel and used to heat the gas filled into the airbag (3).

8. The vehicle collision protection device according to claim 7, characterized in that, The heating temperature of the heater is 48°C.

9. The vehicle collision protection device according to claim 4, wherein, The gas filled in the airbag (3) and the buffer airbag (5) is nitrogen.

10. The vehicle collision protection device according to claim 9, wherein The buffer airbag (5) is made of nylon material.

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