A protective device for a single collision of a car

Abstract

The invention relates to the technical field of automobile safety, and provides a protective device applied to a single collision of an automobile, comprising a vehicle body, an ECU, a sensor, and an electronic SRS, wherein the electronic SRS is mainly composed of an airbag assembly and a gas generator; the airbag assembly and the gas generator are connected to the protective device, and the protective devices are evenly installed at the bottom edge of the vehicle body respectively, and the sensor comprises a front sensor installed around the vehicle body, and the front sensor stimulates the gas generator of the protective device at the corresponding position to work through the ECU respectively, and when the airbag assembly is fully expanded, its safety airbag is wrapped around the outside of the vehicle body; the invention solves the problem that the vehicle body in the prior art does not have a single collision protection mechanism, resulting in serious vehicle body damage and secondary injuries to passengers.

Description

Technical Field

[0001] The invention relates to the technical field of automobile safety, and in particular to a protective device applied to a single collision of an automobile. Background Art

[0002] As an auxiliary device for passive safety, automobile airbags play an irreplaceable role in the life safety of drivers and passengers in the car. At present, there have been relevant studies on automobile external airbags abroad, but there are relatively few studies in China. Automobile collisions are divided into primary collisions and secondary collisions. The collision between the car and the obstacle is called a primary collision, and the collision between the passengers and the vehicle components is called a secondary collision. The currently developed built-in airbags for automobiles effectively reduce the damage to passengers caused by secondary collisions. However, a primary collision not only damages the car, but also causes the driver and passengers to suffer from secondary collision injuries. Therefore, how to reduce or avoid the damage to the car and people caused by a primary collision is a technical problem that needs to be solved at present. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present invention provides a protective device for a single collision of an automobile, which solves the problem that the vehicle body of the prior art does not have a single collision protection mechanism, resulting in serious damage to the vehicle body and secondary injuries to the occupants.

[0004] Technical Solution

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A protective device applied to a single collision of an automobile comprises an ECU, a sensor, and an electronic SRS, wherein the electronic SRS is mainly composed of an airbag assembly and a gas generator; the airbag assembly and the gas generator are connected to the protective device, and the protective devices are evenly installed at the bottom edge of the vehicle body, and the sensors include front sensors installed around the vehicle body, and the front sensors respectively stimulate the gas generators of the protective devices at corresponding positions to work through the ECU, and when the airbag assembly is fully inflated, its safety airbag is wrapped around the outside of the vehicle body.

[0007] Furthermore, the protective device includes a mounting shell and a placement groove with an opening, the placement groove and the mounting shell are elastically and telescopically connected, the airbag is stacked in the placement groove, and the opening of the placement groove is horizontally facing outward.

[0008] Furthermore, three cylinders are arranged side by side on the lower side of the mounting shell, and round tubes are fixed on both sides of the back of the placement groove. The round tubes are slidably clamped in the cylinder at the outer end, and a buffer spring is connected between one end of the round tube located in the cylinder and the inner wall of the cylinder. The gas generator is fixed on the back plate of the placement groove, and its air outlet end extends into the placement groove and is connected to the airbag assembly, and its rear end is inserted into the middle cylinder.

[0009] Furthermore, guide rods are evenly fixed on the circumference of the inner wall of the cylinder, the guide rods are parallel to the axis of the cylinder, and guide grooves matching with the guide rods are opened on the outer wall of the circular tube.

[0010] Furthermore, the length of the bottom plate of the placement groove is smaller than that of the top plate, and a slide groove is provided on the front side of the bottom plate, a connecting rod is slidably connected in the slide groove, and the outer end of the connecting rod is connected to a pressure plate through a torsion spring.

[0011] Furthermore, when the torsion spring is in a natural state, the pressure plate is vertically pressed against the front side of the top plate.

[0012] Furthermore, the sensor also includes a central sensor and a safety sensor. The central sensor is used to detect vehicle collision information and upload it to the ECU. The safety sensor is connected between the ECU and the gas generator.

[0013] Beneficial Effects

[0014] The present invention provides a protective device for a single collision of an automobile. Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By designing and installing an airbag assembly and a gas generator in the protective device, and by installing the assembled protective device at the edge of the bottom of the vehicle body, an air cushion can be quickly laid between the colliding object and the vehicle body when a collision occurs, and the damping effect of the airbag itself or the damping effect of the exhaust throttling of the exhaust hole on the back of the airbag is used to absorb the inertia force of the vehicle, thereby reducing the inertia of the primary collision, preventing or reducing external damage and deformation of the vehicle, and further reducing the damage to the driver and passengers caused by the secondary collision.

[0016] 2. By installing front sensors and protective devices around the body and bottom of the vehicle, comprehensive protection of the vehicle body can be achieved. At the same time, the protective devices independently set at each point have fast independent response speed and are installed in a hidden manner, ensuring the aesthetics of the vehicle body and good adaptability.

[0017] 3. The elastic and retractable connection between the mounting shell of the protective device and the placement slot effectively prevents the airbag from failing due to deformation of the mounting shell due to the high speed of the vehicle causing the airbag to fail to respond in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of installing the protective device of the present invention at the bottom of the vehicle body;

[0020] Figure 2 It is a schematic diagram of the deployment of the vehicle rear airbag of the present invention;

[0021] Figure 3 A perspective view of a protective device of the present invention;

[0022] Figure 4 This is a schematic diagram of disassembling the protective device of the present invention;

[0023] Figure 5 It is the working principle diagram of the protective device of the present invention;

[0024] The numbers in the figure represent: 1-vehicle body; 2-airbag assembly; 3-gas generator; 4-protective device; 5-safety airbag; 41-installation shell; 42-placing groove; 43-cylinder; 44-round tube; 45-buffer spring; 46-guide rod; 47-connecting rod; 48-pressure plate; 49-slide groove. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example:

[0027] A protective device for a single collision of an automobile according to this embodiment is described in detail with reference to Figure 1-4: It includes ECU, sensors, and electronic SRS. The electronic SRS is mainly composed of an airbag assembly 2 and a gas generator 3 (the gas generator is DTNF11A type); the airbag assembly 2 and the gas generator 3 are connected to the protective device 4, and the protective devices 4 are evenly installed at the bottom edge of the vehicle body 1. The sensors include front sensors installed around the vehicle body 1. The front sensors stimulate the gas generators 3 of the protective devices 4 at corresponding positions through the ECU. When the airbag assembly 2 is fully inflated, its safety airbag 5 is wrapped around the outside of the vehicle body 1.

[0028] The sensors also include a central sensor and a safety sensor. The central sensor is used to detect the collision information of the vehicle body 1 and upload it to the ECU. The safety sensor is connected between the ECU and the gas generator 3. The safety sensor is used to prevent the system from causing the airbag 5 to malfunction in non-collision conditions.

[0029] The protective device 4 includes a mounting shell 41 and a placement groove 42 with an opening. The placement groove 42 and the mounting shell 41 are elastically and retractably connected. The airbag 5 is stacked in the placement groove 42, and the opening of the placement groove 42 is horizontally facing outward, which can effectively prevent the airbag 5 from failing due to the deformation of the mounting shell due to the high speed of the vehicle body 1 causing the airbag to fail to respond in time.

[0030] In order to achieve an elastic and retractable connection between the two, three cylinders 43 are arranged side by side on the lower side of the mounting shell 41, and round tubes 44 are fixed on both sides of the back of the placement groove 42. The round tubes 44 are slidably clamped in the outer end of the cylinder 43, and a buffer spring 45 is connected between one end of the round tube 44 located in the cylinder 43 and the inner wall of the cylinder 43.

[0031] Guide rods 46 are evenly fixed on the circumference of the inner wall of the cylinder 43, and the guide rods 46 are parallel to the axis of the cylinder 43. A guide groove that matches the guide rods 46 is provided on the outer wall of the circular tube 44. The length of the bottom plate of the placement groove 42 is less than that of the top plate, and a slide groove 49 is provided on the front side of the bottom plate. A connecting rod 47 is slidably connected in the slide groove 49, and the outer end of the connecting rod 47 is connected to a pressure plate 48 through a torsion spring; when the torsion spring is in the natural state, the pressure plate 48 is vertically pressed against the front side of the top plate. The design of the connecting rod 47 and the pressure plate 48 hinged with the torsion spring can guide the inflated airbag 5 so that it wraps the vehicle body 1 upward to achieve good protection.

[0032] Working principle: Refer to Figure 5When the vehicle body 1 collides, the front sensor receives the signal and identifies the degree of collision through the central sensor. When the degree of collision is greater than the set value, the sensor sends a signal to the ECU. After identification by the ECU, an ignition signal is sent to the gas generator 3. The gas generator 3 generates a large amount of gas in a very short time to fill the stacked airbags to expand them. The inflated airbags rush out and unfold through the opening of the placement groove 42, forming an air cushion, thereby preventing or reducing damage and deformation to the exterior of the car, and further reducing the damage to the driver and passengers caused by the secondary collision; at this time, the connecting rod 47 and the pressure plate 48 are unfolded outward, and the pressure plate 48, under the action of the restoring force of the torsion spring, causes the airbag 5 to unfold upward to wrap the vehicle body 1.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A protective device for a single collision of an automobile, comprising an ECU, a sensor and an electronic SRS, wherein the electronic SRS is mainly composed of an airbag assembly and a gas generator; characterized in that: The airbag assembly and the gas generator are connected to the protective device, and the protective devices are evenly installed at the bottom edge of the vehicle body. The sensors include front sensors installed around the vehicle body. The front sensors respectively stimulate the gas generators of the protective devices at corresponding positions to work through the ECU. When the airbag assembly is fully inflated, the safety airbag is wrapped around the outside of the vehicle body. The protective device includes a mounting shell and a placement groove with an opening, the placement groove and the mounting shell are elastically and telescopically connected together, the safety airbag is stacked in the placement groove, and the opening of the placement groove is horizontally facing the outside, and three cylinders are arranged side by side on the lower side of the mounting shell, and round tubes are fixed on both sides of the back of the placement groove, and the round tubes are slidably clamped in the cylinder at the outer end, and a buffer spring is connected between one end of the round tube located in the cylinder and the inner wall of the cylinder, the gas generator is fixed on the back plate of the placement groove, the air outlet end thereof extends into the placement groove and is connected to the airbag assembly, and the rear end thereof is plugged into the middle cylinder, and the bottom of the placement groove The length of the plate is smaller than that of the top plate, and a slide groove is provided on the front side of the bottom plate, a connecting rod is slidably connected in the slide groove, and the outer end of the connecting rod is connected to a pressure plate through a torsion spring; guide rods are evenly fixed on the circumference of the inner wall of the cylinder, and the guide rods are parallel to the axis of the cylinder, and a guide groove matching the guide rods is provided on the outer wall of the circular tube; when the torsion spring is in a natural state, the pressure plate is vertically fitted and pressed against the front side of the top plate; the sensor also includes a central sensor and a safety sensor, the central sensor is used to detect vehicle collision information and upload it to the ECU, and the safety sensor is connected between the ECU and the gas generator.

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