KR20100055224A - Bumper of car - Google Patents

Abstract

The present invention relates to an automobile bumper, comprising: a back beam coupled to a vehicle body; An energy absorbing member supported by the back beam and absorbing an impact by pneumatic pressure; And a cover surrounding the energy absorbing member.

The automobile bumper according to the present invention increases the shock absorbing force of the bumper against the external shock by the energy absorbing member is cushioned by the air.

Description

BUMPER OF CAR

The present invention relates to a bumper, and more particularly, to an automobile bumper in which an impact buffering force is increased since the shock is generated by the air when an external shock occurs.

In general, an automobile bumper is installed at the front and rear of the vehicle body to protect the vehicle body and the occupant, as well as to protect the engine and various devices mounted on the hood and the engine room.

In addition, the bumper satisfies the shock requirements according to national regulations, should be excellent in high rigidity and impact resistance in a wide temperature range, and the expansion and contraction by temperature should be small.

1 is an exploded perspective view of a conventional automobile bumper.

Referring to FIG. 1, the bumper 50 is mounted to the stay 11 of the vehicle body 10 for shock absorption, and includes a back beam 20, an energy absorbing member 30, and a cover 40.

The back beam 20 blocks the physical shock that enters the vehicle body 10, and the energy absorbing member 30 absorbs the physical shock prior to the impact on the back beam 20. The cover 40 prevents detachment of the energy absorbing member 30 and makes the appearance beautiful.

The cover 40 is a part which maintains the outer shape of the bumper 50 and is made of a material which is easily restored to a circular shape against deformation due to a slight impact.

The energy absorbing member 30 absorbs collision energy while collapsing at a low speed collision, and the back beam 20 maintains the shape of the bumper 50 and serves to absorb shock in a large collision.

Conventional automobile bumpers absorb shocks when the energy absorbing member is damaged when a collision occurs in a partial region of the vehicle.

Therefore, even a minor accident occurs, there is a problem in that the entire energy absorbing member needs to be replaced to repair the car.

Therefore, there is a need for improvement.

The present invention has been made to improve the above problems, and an object thereof is to provide a vehicle bumper that can be replaced by selecting a part of the broken energy absorbing member.

The present invention to achieve the above object is a back beam coupled to the vehicle body; An energy absorbing member supported by the back beam and absorbing an impact by pneumatic pressure; And a cover surrounding the energy absorbing member.

The energy absorbing member is coupled to the back beam and one side is opened to form an insertion groove; And an air cushion mounted to the insertion groove to store air.

A mounting hole is formed in the back beam, and a rear surface of the body is provided with a hook which is inserted into the mounting hole and caught by the back beam.

The body is provided with a partition for partitioning the insertion groove, characterized in that the air cushion is mounted to each of the partitioned insertion groove.

The body is formed with a through hole, the air cushion is characterized in that the locking is penetrated through the through hole.

The air cushion includes a main cushion located in each of the partitioned insertion grooves; A through cushion communicating with the main cushion and passing through the through hole; And an auxiliary cushion communicating with the through cushion and having a larger volume than the through hole.

The back beam is characterized in that the seating groove for inserting the auxiliary cushion is formed.

As described above, the vehicle bumper according to the present invention is provided with an energy absorbing member including an air cushion filled with air, thereby improving shock absorption due to external shock.

The vehicle bumper according to the present invention is installed by partitioning a plurality of air cushions, and when an external shock occurs, only the air cushion located in the corresponding area is damaged, thereby repairing only the damaged air cushion during the repair process of the bumper It is effective in reducing costs.

In the bumper vehicle according to the present invention, when the main cushion of the air cushion is pressed, the auxiliary cushion is expanded in the seating groove of the back beam, thereby increasing the rigidity of the back beam during external impact.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a vehicle bumper according to the present invention.

In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom.

Therefore, definitions of these terms should be made based on the contents throughout the specification.

2 is an exploded perspective view of a vehicle bumper according to an embodiment of the present invention, FIG. 3 is an exploded perspective view of an energy absorbing member and a back beam of a vehicle bumper according to an embodiment of the present invention, and FIG. to be.

2 and 4, the vehicle bumper 100 according to an embodiment of the present invention is provided with a back beam 110, the energy absorbing member 120 and the cover 130.

The back beam 110 is fastened to the stay 102 provided in the vehicle body 101. The back of the back beam 110 is formed with a hole for bolting coupling with the stay (102). Since the combination of the back beam 110 and the vehicle body 101 is a conventional technology, a detailed description thereof will be omitted.

The energy absorbing member 120 is supported by being coupled to the back beam 110 and absorbs the shock by pneumatic pressure. The energy absorbing member 120 is filled with air like an air bag to absorb the external shock.

The cover 130 surrounds the energy absorbing member 120 and forms an appearance of the bumper 100. The cover 130 is bolted to the vehicle body 101. Since this coupling method is a conventional technology, a detailed description thereof will be omitted.

Energy absorbing member 120 according to an embodiment of the present invention is provided with a body 121 and the air cushion 122. The body 121 is coupled to the back beam 110 and one side is opened to form the insertion groove 123. Air cushion 122 is inserted into the insertion groove 123 is mounted to the body 121, the air is stored. The air cushion 122 may be made of a soft plastic synthetic resin or by using a variety of other materials to absorb the impact while being broken according to the external impact amount.

Body 121 is coupled to the back beam 110 by a separate fastening means, the body 121 and the back beam 110 according to an embodiment of the present invention is coupled to the hook. That is, the mounting hole 111 is formed in the back beam 110, and the hook 124 is provided on the rear surface of the body 121. Accordingly, the hook 124 penetrates through the mounting hole 111 and is caught by the rear surface of the body 121 to couple the body 121 to the back beam 110. In order to smoothly engage the hook, the rear surface of the body 121 may be provided with a locking step that is caught on the hook 124.

The body 121 according to an embodiment of the present invention is provided with a partition 125. The partition 125 partitions the insertion groove 123, and the air cushion 122 is mounted in each of the partitioned insertion grooves 123.

A through hole 126 is formed in the body 121, and the air cushion 122 is formed to extend through the through hole 126, thereby being fixed to the body 121. The through holes 126 of the body 121 are formed in each of the partitioned insertion grooves 123 so that the air cushion 122 is mounted in each of the partitioned insertion grooves 123.

The air cushion 122 according to an embodiment of the present invention includes a main cushion 1221, a through cushion 1222, and an auxiliary cushion 1223.

The main cushion 1221 is positioned in each insertion groove 123, and the through cushion 1222 extends from the main cushion 1222 and passes through the through hole 126. The auxiliary cushion 1223 extends from the through cushion 1226 and is positioned on the rear surface of the body 121 and has a volume larger than that of the through hole 126.

Accordingly, the air cushion 122 is partially positioned on the front surface of the body 121 by the through hole 126 and the other portion is positioned on the rear surface of the body 121, and is locked to the body 121. On the other hand, since the air is injected into the air cushion 122, it is possible to change itself. Therefore, the auxiliary cushion 1223 has a size such that a portion of the built-in air can be moved to the main cushion 1221 to pass through the through hole 126.

The back beam 110 is provided with a seating groove 112 for inserting the auxiliary cushion 1223. Therefore, when the air of the main cushion 1221 flows into the auxiliary cushion 1223 due to the external impact, the auxiliary cushion 1223 is expanded in the seating groove 112 to increase the rigidity of the back beam 110.

Referring to the operation of the vehicle bumper according to an embodiment of the present invention having the structure as described above are as follows.

An air cushion 122 is mounted in each of the insertion grooves 123 partitioned in the body 121, and the body 121 in which the air cushion 122 is mounted is mounted to the back beam 110 by coupling the hooks 124. . The cover 130 is coupled to the vehicle body 101 while surrounding the energy absorbing member 120.

When an external shock is applied to the bumper 100 in the above state, the air cushion 122 corresponding to the impact portion absorbs the shock to protect the vehicle. At this time, since only the air cushion 122 corresponding to the impact site is damaged by the external shock, only the air cushion 122 damaged during the repair process may be replaced.

On the other hand, when an impact is applied to the air cushion 122, air is introduced into the auxiliary cushion 1223 while the main cushion 1221 is contracted. By this process, the auxiliary cushion 1223 is inflated, the expanded auxiliary cushion 1223 is expanded in the seating groove 112 to increase the rigidity of the back beam 110.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. I will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is an exploded perspective view of a conventional automobile bumper.

2 is an exploded perspective view of a vehicle bumper according to an embodiment of the present invention.

3 is an exploded perspective view of an energy absorbing member and a back beam of an automobile bumper according to an exemplary embodiment of the present invention.

4 is a cross-sectional view of the combination of FIG.

* Description of the symbols for the main parts of the drawings *

110: back beam 120: energy absorbing member

121: body 122: air cushion

123: insertion groove 125: partition

126: through hole 130: cover

Claims (7)

A white beam coupled to the vehicle body; An energy absorbing member supported by the back beam and absorbing an impact by pneumatic pressure; And Automobile bumper comprising a cover surrounding the energy absorbing member. The method of claim 1, wherein the energy absorbing member A body coupled to the back beam and having one side opened to form an insertion groove; And The bumper of the vehicle, characterized in that it comprises an air cushion mounted to the insertion groove is stored air. 3. The method of claim 2, Mounting holes are formed in the back beam, The rear surface of the body is a bumper, characterized in that the hook is inserted into the mounting hole to be caught by the back beam. The method of claim 2 or 3, The body is provided with a partition for partitioning the insertion groove, And the air cushions are respectively mounted to the insertion grooves partitioned. The method of claim 4, wherein Through-holes are formed in the body, The air cushion is a vehicle bumper, characterized in that the locking is penetrated through the through hole. The method of claim 5, wherein the air cushion A main cushion positioned in each of the partitioned insertion grooves; A through cushion communicating with the main cushion and passing through the through hole; And And an auxiliary cushion communicating with the through cushion and having a volume larger than that of the through hole. The method of claim 6, The bumper of the vehicle, characterized in that the seating groove is formed for the auxiliary cushion is inserted.

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