KR200457455Y1 - Vehicle Air Bump with Multiple Air Bag and Punch Part - Google Patents

Abstract

The present invention relates to a vehicle air bumper, the impact energy generated during the collision of the vehicle is buffered through the first hollow portion and the second hollow portion, and the air return control valve of the third hollow portion by using the repulsion force to block the air It relates to an air bumper structure for an automobile, characterized by reducing.

Description

       Vehicle Air Bump with Multiple Air Bag and Punch Part}

The present invention relates to a vehicle air bumper, and the impact energy generated during the collision of the vehicle is buffered through the first hollow portion and the second hollow portion, and the air return control valve of the third hollow portion blocks the air by using the repulsive force to reduce the repulsive force It relates to an air bumper structure for automobiles, characterized in that

Typically, a bumper of a vehicle absorbs the impact to some extent in a collision with a vehicle or an external object while driving the vehicle to reduce the amount of impact transmitted to the vehicle body, so that the vehicle and the occupant of the vehicle to prevent damage or injury. It is usually installed at the rear.

Conventionally, bumpers that absorb shocks during a collision have been used in fixed vehicles and guardrails to prevent damage to life and property. Such bumpers include metal frame members, and some bumpers typically have elastic members such as springs or elastomeric materials to absorb shocks.

Accordingly, the bumper used in the related art has a disadvantage in that the bumper is broken during a collision, and in the case of a weak collision, there is a problem of aesthetic appearance due to a scratch. There was a disadvantage to be brought about.

In addition, the conventional bumper is simply a material that absorbs the shock wave, so there is a disadvantage that can not completely absorb the shock wave generated when the collision, due to this there was a big problem such as a large body damage or injury to the occupant.

To this end, another improved conventional bumper may comprise an expandable fluid bladder that normally causes air to escape from within the expandable fluid bladder in the event of an impact, in which case the expandable fluid bladder may The pressure rises rapidly until the maximum pressure is reached, at which pressure the fluid pressure of the air in the expandable fluid bladder is released, usually causing the air to be released from within the expandable fluid bladder.

However, even in this case, the conventional bumper allows users to inject more air into the expandable fluid bladder in order to inflate the bladder again after the impact, but the violent impact may damage the components of such air bumper. There is an urgent need for an air bumper system that can automatically maintain internal pneumatic pressure and ensure safety.

The purpose of the present invention for solving the above-mentioned conventional problems, the structure is simple and easy to manufacture, and by controlling the flow of the bumper material and compressed air to absorb and absorb the shock wave in a double, completely protect the body and the human body It is to provide a car air bumper that can.

In addition, another object of the present invention is to configure the bumper body made of a strain recovery elastic skin material, by forming a plurality of spaces in the interior of the bumper body to control the internal air flow during impact by injecting compressed air, and also to the outside It is to provide an air bumper that maximizes stability by absorbing shock by allowing air to be discharged.

The automobile air bumper according to the first embodiment of the present invention for solving the above-mentioned conventional problems and achieving the object according to the present invention, has a plurality of hollows therein and is made of an elastic material which is fixed to the rear by a support bracket In an air bumper having a bumper body, an air return control valve is opened so that air of the second hollow portion flows into the third hollow portion by an impact force generated by compressed air at the same time as the collision, and after the impact, the second hollow portion As the negative air pressure is lower than the air pressure of the third hollow portion, the air return control valve is closed, and the air and the third hollow portion move the air to the second hollow portion through the air return puncturing portion, thereby reducing the impact force and the repulsive force due to the collision. It is characterized in that the shock absorption is made to be gentle. In addition, the second hollow portion Side is attached in a closed first hollow form is configured to act to increase the time to collision structure.

An automobile air bumper according to a second embodiment of the present invention is provided with a plurality of hollow parts therein and an air bumper having a bumper body made of an elastic material fixedly supported by a support bracket on the rear thereof, and located at the center of the rear surface of the support bracket. At the same time as the collision, the air of the second hollow portion moves to the third hollow portion by opening the air return control valve, and after the collision, the air pressure of the third hollow portion rises above the air pressure of the second hollow portion. Close, absorbing the impact force and the repulsive force by controlling the air of the third hollow portion to move to the second hollow portion through the error return perforation portion, and the high-speed drill portion and the support brackets on the upper and lower portions of the third hollow portion It consists of a low-speed punching part, the high-speed punching part or the low-speed punching part is a punch pin by the impact force at the time of impact It is characterized in that it is configured to absorb the impact force through the dog to discharge the air of the second hollow portion to the outside. In addition, the third hollow portion may be formed on the opposite side of the second hollow portion on the basis of the support bracket. In addition, the second embodiment of the vehicle air bumper of the present invention has a structure in which the first hollow portion is sealed to the outside of the second hollow portion.

In addition, in the vehicle air bumper according to the first and second embodiments of the present invention, the air bumper body is characterized in that it uses a skin material excellent in elasticity to increase shock absorption and effectively control the repulsive force.

In the vehicle air bumper according to the first and second embodiments of the present invention, the skin material is characterized in that the urethane-based terraced TPU.

In addition, in the vehicle air bumper according to the first and second embodiments of the present invention, the terrace TPU can be configured using a transparent terrace TPU so that the user can visually inspect the inside of the bumper to check the internal function. It can be.

In the vehicle air bumpers according to the first and second embodiments of the present invention, the pressure is increased by moving the air of the second hollow portion to the third hollow portion at the same time as the impact through the air return punching portion provided in the center of the air return control valve It is characterized in that the recharge of the raised third hollow portion gradually returns to the second hollow portion to perform automatic refilling.

In the vehicle air bumper according to the first and second embodiments of the present invention, further comprising a punching bolt for drilling the hollow part of the urethane material when the collision is provided with a punching bolt on the inner steel structure on the front of the third hollow part; It features.

In the vehicle air bumpers according to the first and second embodiments of the present invention, the helium (He) gas is injected together with air into the hollow to reduce the weight of the vehicle.

In the vehicle air bumpers according to the first and second embodiments of the present invention, nitrogen (N2) gas is injected into the hollow part to prevent an internal filling volume change due to temperature decrease as much as possible.

In the vehicle air bumper according to the second embodiment of the present invention, the low-speed punching portion and the high-speed drilling portion is a tube formed in contact with the back side of the support bracket, a stopper formed on the other side of the tube, and the tube Formed therein and characterized in that consisting of a punching pin for puncturing the stopper and a spring for the reciprocating motion of the punching pin.

In the vehicle air bumper according to the first and second embodiments of the present invention, the drilling pin is characterized in that it further comprises a hole through which air can pass.

As described above, according to the air bumper for automobiles (electric vehicles, hybrid cars, etc.) according to the present invention, since the structure is simple and easy to manufacture, the shock absorber absorbs the shock wave twice by the material of the bumper and the compressed air. The human body can be completely protected.

In addition, the bumper body is composed of a strain recovery elastic skin material, forming a space portion inside the bumper body to inject compressed air and to easily control the internal air flow during the impact to maximize the stability.

1 is a cross-sectional view of the configuration before the impact air bumper according to a first embodiment of the present invention.
Figure 2 is a cross-sectional view of the air bumper configuration when the air return control valve is opened after the impact according to the first embodiment of the present invention.
Figure 3 is a cross-sectional view of the air bumper configuration when the air return control valve is closed after the impact according to the first embodiment of the present invention.
4 is a view showing an air return control valve and a drilling bolt according to a first embodiment of the present invention.
5 is a view showing an embodiment of a drilling bolt according to a first embodiment of the present invention.
Figure 6 is a cross-sectional view of the air bumper configuration according to a second embodiment of the present invention.
7 is a view showing a low speed punch and a high speed punch according to a second embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing the configuration of the air bumper before the impact according to the first embodiment of the present invention, Figure 2 is a cross-sectional view of the air bumper configuration when the air return control valve is opened after the impact according to the first embodiment of the present invention, 3 is a cross-sectional view of the air bumper configuration when the air return control valve is closed after the impact according to the first embodiment of the present invention, Figure 4 is a view showing the air return control valve and the drilling bolt according to the first embodiment of the present invention 5 is a view showing an embodiment of a drilling bolt according to the first embodiment of the present invention.

First, referring to FIG. 1, a configuration of an air bumper according to a first embodiment of the present invention before external impact is as follows.

As shown, the air bumper according to the first embodiment of the present invention has a first hollow portion 10 which is bent in the center from the front of the vehicle and forms between the vertically formed blocking film inside the bumper, and the bumper from the back of the blocking film. The third hollow part 20 which forms a space to the rear support bracket 80 and the third hollow part which is an empty space by the steel structure 60 and the support bracket 80 inside the second hollow part 20. It is the structure which forms the part 30.

The support bracket 80 is installed at the rear to enable the support to be attached to the front lower structure of the vehicle so that the air bumper according to the present invention is attached to the front of the vehicle, and the outer surface of the air bumper body is composed of a strain recovery elastic skin 70. , The air bumper extension extending in the upper and lower cross-sectional shape of the cross section is fastened by a plurality of bolts 81 to the support bracket 80, and the support bracket 80 is disposed on the upper and lower rear surfaces of the steel structure 60 installed therein. It is preferable to fix with a fastening bolt to be coupled and supported.

In addition, at least one plate-type air return control valve 40 is provided at the front surface of the steel structure 60, which is an external shape of the third hollow part 30, and an air return cloth is disposed at the center of the plate-type air return control valve 40. It is provided with a study 50, and also to the perforated bolt 31 on one side of the steel structure (60).

In this case, although not shown, the pneumatic pump may be provided with an ECU (Electronic Control Unit) for controlling the driving so that the pumping operation to variably adjust the air pressure inside the air bumper, in this case, the plurality of hollow by the ECU The wealth is injected with air.

The elastic skin 70 having a physical property uses a urethane system, and preferably a terraced TPU. The material has a stretch rate of 600% and increases by 140% due to the material properties of the material itself.

In this case, the stretchable skin 70 may be made of a transparent material and may be surface-treated so that the user can check the internal function even with the naked eye by configuring the glass to look inside the bumper.

Subsequently, according to the present invention using a plurality of hollow parts 10, 20, 30, the steel structure 60 and the air return control valve 40, the air return puncturing part 50 and the air repulsive force according to the present invention The air flow inside the air bumper will be described in detail with reference to FIGS. 2 to 4.

2 and 4B show the case where the air return control valve 40 is open, and FIGS. 3 and 4A show the air bumper shape when the air return control valve 40 is closed.

2 to 4, the basic air flow principle of the internal hollow portion 10, 20, 30 according to the present invention, the impact energy generated during the collision of the vehicle is the first hollow portion 10 and the second hollow The air return control valve 40 of the third hollow part 30 blocks the air by buffering the portion 20 and using the repulsive force to reduce the repulsive force. In the repulsion force, the air of the second hollow portion moves to the third hollow portion due to the impact at the time of impact, and since the impact force disappears immediately after the collision, the air pressure of the third hollow portion is greater than the air pressure of the second hollow portion, Therefore, the air return control valve 40 is closed to block the air flow, thereby reducing the repulsive force.

To this end, it is preferable to inject weak air into the first hollow portion 10, and to inject strong high-pressure air into the second hollow portion, and to inject air in a range of 10 psi to 30 psi.

That is, the first hollow part 10 and the second hollow part 20 are thinned according to the compression action due to an external impact, and thus the outer surface of the air bumper in the up and down direction according to the property of the elastic skin 70 having physical properties. The stretching process of 70 takes place.

In this case, the repulsive force is controlled and thus it is possible to perform a shock mitigation function.

FIG. 2 illustrates the third hollow portion (3) through an air return control valve 40 in the form of a check valve in which a relatively compressed air flow is opened in the second hollow portion 20 in the direction of an arrow inside the air bumper during an impact. 30) It indicates that it flows inside.

At this time, since the impact force is lost after the above process, the air of the relatively high pressure trapped in the third hollow part 30 inside the air bumper is closed at the center of the air return control valve because the air return control valve is closed. The air return through the drilling unit 50 is to move until the same as the air pressure of the second hollow portion 20.

The air return puncturing portion 50 is able to achieve the technical idea according to the present invention by allowing the air to come out fine when coming out in a small thread hole shape.

In addition, unlike the conventional air bumper that only cushioned the impact of the air, the air bumper has a property that the skin 70 itself is stretched by the elasticity to provide an air bumper for automobiles with high impact absorption.

In particular, it corresponds to a more useful technology for light vehicles using renewable energy, such as electric vehicles, hydrogen vehicles, hybrid vehicles.

In this case, helium (He) gas may be used to reduce the weight of the vehicle, and a plurality of air return control valves 40 and air return bores 50 may be installed.

Alternatively, nitrogen (N2) without temperature change may be used as internal air to prevent air shrinkage due to a winter temperature drop.

The air bumper of the present invention configured as described above has a bumper function through the air bumper skin 70 material and the internal hollow parts 10, 20, and 30 configured to alleviate the impact in a vehicle collision in a single structure of the air bumper body. Since it can be performed faithfully, it will have the effect of greatly reducing the ease of installation and manufacturing cost.

In addition, the air return control valve 40 and the air return puncturing portion 50 and the drilling bolt 31 related to performing a shock mitigation function during an external collision will be described in detail with reference to FIGS. 4 and 5. If the above occurs, the air bumper skin 70 and the drilling bolt 31 abuts to be made by the projections 32, 33, 34 of the drilling bolt 31. This lowers the air pressure generated in the first and second hollow parts 10 and 20 due to the excessive collision through the perforation of the air bumper skin 70 to weaken the impact force and the repulsive force.

At this time, the protrusion of the drilling bolt 31 refers to the pointed head (32, 33, 34), it is preferable that the head of the drilling bolt 31 is configured to protrude 10cm away from the steel structure (60).

In the same context, the bolt 81 for fastening the end of the support bracket 80 and the second hollow portion 20 is composed of a fastening bolt (rounded head) and a drilling bolt (headed pointed). Preferably, when a collision occurs in the range of 50 to 60 km or more, the outer surface of the skin 70 and the bolt for drilling are brought into contact with each other to absorb the impact force and the repulsive force through the process of discharging the air to the outside of the second hollow portion. To do that.

6 is a cross-sectional view illustrating the configuration of an air bumper according to a second embodiment of the present invention, and FIG. 7 is a view showing a low speed punching unit and a high speed drilling unit according to the second embodiment of the present invention.

As shown in FIGS. 6 and 7, the air bumper according to the second embodiment of the present invention has a first hollow portion 10a which is curved at the center from the front of the vehicle and forms a blocking film having a vertical linear structure inside the bumper. The second hollow portion 20a forming an air bumper inner space from the rear surface of the barrier film to the bumper rear support bracket 80a, and the steel structure 60a and the steel structure 60a positioned at the center of the rear surface of the support bracket 80a. It is a structure that forms a third hollow portion (30a) that is an internal empty space of the interior.

A support bracket 80a is installed on the rear surface of the vehicle so as to be attachable to the lower front structure of the vehicle so that the air bumper according to the present invention is attached to the front of the vehicle. In addition, the air bumper extension portion extending in the upper and lower cross-sectional shape of the cross section is fastened to the support bracket 80a by a plurality of bolts 81a, and the steel structure 60a installed on the rear surface of the support bracket 80a is a support bracket ( 80a) is preferably fixed to the drilling bolt (31a) to be coupled and supported.

In addition, the air bumper of the present invention has at least one air return control valve 40a and an air located at the center of the air return control valve 40a on the front surface of the steel structure 60a, which is an external shape of the third hollow part 30a. And a punching bolt 31a provided with a protrusion while fastening the return punching part 50a and the steel structure 60a and the support bracket 80a.

At this time, the operation principle of the air return control belt 40a and the air return puncturing portion 50a are the same as those of FIGS. 2 and 3.

In addition, the upper and lower sides or the left and right sides of the steel structure 60a are provided with a low speed punching unit 90a and a high speed punching unit 100a for minimizing the repulsive force by discharging air to the outside during a low speed or high speed collision.

At this time, the low-speed punching portion (90a) and the high-speed punching portion (100a) is applied to the present invention in Figure 7, the tube (92a, 102a) to form one side in contact with the back of the support bracket (80a), and the tube Plugs 93a and 103a formed on the other side of the 92a and 102a, and punching pins 91a and 101a formed in the tubes 92a and 102a and puncturing the plugs 93a and 103a upon impact and It is composed of springs 94a and 104a for reciprocating movement of the drilling pins 91a and 101a. In addition, the drilling pins 91a and 101a further include holes 96a and 106a through which air can pass, and fixing protrusions 95a and 105a for fixing the springs.

That is, the operating principle of the low-speed punching section 90a and the high-speed punching section 100a is to push the perforation pins 91a and 101a by the impact force at the time of low or high speed collision (FIG. 7b), thereby closing the stoppers 93a and 103a. It will be perforated.

At this time, the air is discharged to the outside through the holes formed in the inner holes 96a and 106a of the drilling pins 91a and 101a and the stoppers 93a and 103a to relieve the repulsive force.

As described above, according to the air bumper for automobiles (electric vehicles, hybrid cars, etc.) according to the first and second embodiments of the present invention, the structure is simple and easy to manufacture, and the shock wave is doubled by the bumper material and compressed air. It absorbs while absorbing it, which perfectly protects the body and the human body.

In addition, the bumper body is composed of a strain recovery elastic skin (70, 70a) material, forming a space inside the bumper body to inject compressed air and to easily control the internal air flow during impact to maximize stability To have.

Although the present invention configured as described above has been described by the limited embodiments and drawings, the terms or words used in the present specification and claims are not limited to the ordinary or dictionary meanings and should not be interpreted. It must be interpreted to mean meanings and concepts. Therefore, the embodiments described in the present specification and the configuration shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, and various equivalents may be substituted for them at the time of the present application. It should be understood that there are water and variations.

10, 10a: 1st hollow part 20, 20a: 2nd hollow part
30, 30a: third hollow portion 31, 31a: perforated bolt
40, 40a: Air return control valve 50, 50a: Air return perforation part
60, 60a: Steel structure 70, 70a: Air bumper body (elastic skin material)
80, 80a: Bracket 81, 81a: Bolt
90a: low speed perforation part 100a: high speed perforation part

Claims (9)

delete delete In the air bumper fastened and fixed to the support bracket 80 is fixed to the vehicle support,
The car air bumper,
A third hollow portion 30 formed by the steel structure 60 fastened to one side of the support bracket 80;
A second hollow part 20 surrounding the outside of the third hollow part;
A drilling bolt 81 for fastening the second hollow portion and the support bracket;
A first hollow portion 10 padded to an outer surface of the second hollow portion 20;
A boring bolt 31 formed on one side of the steel structure 60 fastened to the support bracket and for punching the second hollow portion upon impact;
An air return control valve 40 formed on at least one side of the steel structure 60;
And an air return puncturing portion 50 formed at the center of the air return control valve.
The method of claim 3, wherein
The skin 70 of the first hollow portion 10 and the second hollow portion 20,
Automotive air bumper, characterized in that the urethane-based terrace TPU.
The method of claim 4, wherein
Car air bumpers,
Automobile air bumper, characterized in that further comprising a perforation portion in the support brackets above and below the third hollow portion.
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