KR20000037052A - Car bumper - Google Patents

Abstract

PURPOSE: A safeguard bumper for automobile is provided to perform effective absorbing act upon a huge crash accident owing to high speed running of vehicles as well as a slight grazing accident of automobile, so that the driver's damage extent and breakdown extent of a vehicle may be significantly reduced and then durability of vehicle and safety may be extremely improved. The safeguard bumper is also provided to minimize the breakdown of the bumper and to avoid the crash impact upon crash of a vehicle by allowing the bumper having a transferable behavior to make an angle of inclination upon crash, particularly, partial crash of a vehicle, so that a driver may be protected from the crash. CONSTITUTION: In a safeguard bumper for automobile, a bumper frame(1) is formed to act a telescopic function, in which an impact absorbing member(2) is mounted. A connection structure consisted of a plurality of jointed link members(11, 11') is provided to impart elastic transferability to a crashing section upon a crash of vehicles. The impact absorbing member(2) having honey comb type air bags(21) constituting a partition structure separated each other and an absorbing member(3) consisted of air cylinders are mounted within the bumper frame(1) having a link joint structure and a telescopic covering device. A driver apparatus member(5) controlling the air cylinders(31) and the air bags(21) as being connected by air circulating lines(4) is provided at the rear side of the frame(1). The bumper frame(1) is mounted to a vehicle body frame(6). According to the safeguard bumper, selective contraction or expansion may be performed to absorb crashing impact.

Description

Car bumper {Car bumper}

The present invention relates to a safety bumper for an automobile, and more particularly, by installing a shock-absorbing device in a bumper having a folding structure to protect a driver from a collision accident occurring while driving a vehicle and at the same time a vehicle body according to a collision accident. The present invention relates to a safety bumper for a vehicle that can minimize damage and improve stability and durability.

More than 75% of traffic accidents occur during the operation of automobiles, and most of them are car-to-vehicle collisions, most of which are mainly caused by off-set situations rather than frontal collisions. In order to protect the driver from a collision accident and to prevent damage to the vehicle, all vehicles usually have a bumper that cushions the front and rear surfaces of the vehicle.

Thus, a general vehicle bumper being used to protect the driver and the vehicle from the collision of the vehicle as described above, as shown in Figure 1, a constant space portion formed inside the bumper body 10 made of an elastic material In addition, the buffer member 20 to the buffer frame 30 are built in this space portion, and this is to be mounted on the front and rear sides of the vehicle body to have a use relationship.

However, the conventional vehicle bumper having the configuration as described above simply uses the material characteristics of the pump that performs the expansion and contraction action. When a collision accident of the vehicle occurs during a high-speed driving, it is damaged as it is not absorbed effectively and the driver and the vehicle are damaged. Not only did it provide a problem of deterioration in durability, which prevents the protective function from being performed at all, and the buffer member or buffer frame built into the bumper body also has a weak elastic restoring force and shock absorbing ability, so that the driver and vehicle protection role cannot be sufficiently expected. It was a problem of considerable structural defects.

On the other hand, the above-mentioned conventional vehicle bumper has a problem that it is easily twisted, deformed or broken by a slight contact accident due to the impact concentration phenomenon of the collision site during the partial collision (off set) of the vehicle to relatively amplify the damage of the vehicle. Not only was it to give, but also to deliver the impact of the car body concentrated in the vehicle contact area to the driver as it was not smoothly distributed to the outside, so that the degree of injury is further amplified, such a constant safety problem always existed.

Accordingly, the present invention has been made to solve the general problems of the conventional vehicle bumper;

An object of the present invention is to form a bumper frame to perform a folding function, and to provide a shock-absorbing device therein to perform an effective buffering action from a large collision accident caused by a high-speed vehicle to a slight contact accident at the same time As an effective shock absorbing effect, it is to provide a safety bumper for a vehicle so as to greatly reduce the degree of injury of the driver and the degree of damage to the vehicle in the event of a crash of the vehicle, thereby greatly improving durability and safety.

On the other hand, another object of the present invention is to provide a plurality of link member connection structure to form a joint to provide elastic fluidity to the impact site during the collision, to minimize the breakage of the bumper, in particular partial collision (off) of the vehicle bumper It is to provide a safety bumper for a vehicle that can effectively protect the driver from a vehicle accident while avoiding a crash impact of the vehicle by generating an inclination angle of a flexible bumper during set).

As described above, specific means of the present invention for achieving the above object;

A split structure structured in a bumper frame with a link connection structure and a folding sealing means is provided. A shock absorbing portion having a honeycomb-type air bag and a shock absorbing portion formed of an air cylinder are formed on the rear side thereof. After forming the drive unit for controlling the air cylinder and the air bag by connecting an air circulation line, it is achieved by causing the bumper frame to be coupled with the chassis frame provided with a transfer guide projection to perform the contraction and expansion of the optional bumper. .

1 is a configuration diagram of a bumper for a conventional vehicle

2 is a perspective view of a safety bumper for a vehicle according to the present invention mounted on a vehicle

Figure 3 is an internal configuration of the safety bumper for a vehicle according to the present invention

4 is a partially enlarged configuration diagram of a safety bumper for a vehicle according to the present invention;

5 is a folding state of the safety bumper for a vehicle according to the present invention

Figure 6 is a front collision action state of the safety bumper for automobiles according to the present invention

7 is a partial collision action state of the safety bumper for a vehicle according to the present invention

〈Description of Codes for Major Parts of Drawings〉

1 Bumper Frame 2 Shock Absorber 3 Shock Absorber

4 air circulation line 5 drive unit 6 chassis frame

11,11 ': link member 12: sealing means 21: air bag

31: air cylinder 41: supply pipe 51: air pump 52: intermittent valve 53: air tank 54: direction switching switch 61: transfer guide projection 111: transfer guide groove 211: through hole

212: pressure regulating membrane 411: primary safety valve 412: secondary safety valve 541: intermittent cylinder P: push rod S: return spring

Hereinafter, a preferred embodiment of a safety bumper for a vehicle according to the present invention will be described in detail based on the accompanying drawings.

2 is a perspective view of a safety bumper for a vehicle according to the present invention mounted on a vehicle, Figure 3 is an internal configuration of the safety bumper for a vehicle according to the present invention, Figure 4 is a partially enlarged portion of the safety bumper for a vehicle according to the present invention 5 is a configuration diagram illustrating a folding action state of the safety bumper for a vehicle according to the present invention;

The shock absorbing part 2 and the shock absorbing part 3 are formed in the bumper frame 1, and the driving device part 5 having a connection structure by the air circulation line 4 is formed, and the combination is fixed. It is configured by forming the chassis frame 6 to be installed and guided.

In this case, the bumper frame 1 combines a plurality of link members 11 and 11 'into one or more eccentric hinge connection relations as shown in A and B enlarged views of FIG. In the bumper frame 1, the link member 11 'constituting the left and right sides of the bumper is particularly shown in the enlarged portion D of FIG. 3. As the shape of the upright wooden body as described above to form a conveyance guide groove 111 of the groove structure connectable to the chassis frame 6 to be described later, at least on the upper and lower surfaces of the bumper frame (1) As the plate-shaped coupling structure separated in three stages, it is preferable to configure the sealing means 12 to perform a folding action (TELESCOPE form) as shown in FIG.

In addition, the shock absorbing unit 2 is to be formed in a plurality of divided structures that are mutually isolated as shown in Figure 3 in the inner left, right and inner surfaces of the bumper frame (1), each such impact As the absorbent portion, a flexible configuration having a hexagonal cylinder is mounted integrally with a plurality of airbags 21 forming a honeycomb-shaped coupling structure, as shown in FIGS. As shown in Fig. 4, a pressure control membrane is formed to form a connection structure by the mutual through holes 211, and a bursting function in the event of an impact above a set pressure as a soft closed membrane structure in the center of the upper surface of each airbag 21. It is preferable to form (212).

In addition, since the shock absorbing part 2 is formed in the above-mentioned bumper frame 1, the shock absorbing part 3 is shown in FIG. 3 at a portion where each shock absorbing part 2 is divided. It is to be formed as a pair of space structure to form a plurality of bar, such a buffer portion (3) is formed in the form of a conventional air cylinder (31) to perform a folding action in a form separated from the shock absorbing portion (2) Is preferred.

On the other hand, the air circulation line 4 is a kind of pipe connection structure for supplying the air pressure generated from the drive unit 5 to be described later into the air bag 21 and the air cylinder 31 described above, such air circulation It is preferable to form a plurality of supply pipes 41 having a vertical connection structure as shown in FIGS. 3 to 4 as the line 4.

At this time, the supply pipe is to be provided with each of the primary and secondary safety valves (411, 412) at each connection portion, as shown in Figure 4, in particular in the formation of such a supply pipe (41) It is preferable to form a flexible rubber material so as to have elasticity against external stress.

In addition, the drive unit 5 is a drive means for driving a safety bumper for automobiles according to the present invention, such a drive unit 5 is shown in Figure 3 on the extension line of the air circulation line (4) described above. As shown in FIG. 3, the air pump 51 is formed on one side of the integrated structure, and the intermittent valve 52 is disposed at a position as shown in FIG. 3 in a form spaced apart from the air pump 51 by a predetermined length. It is preferable to form an air tank 53 having, and to be provided by providing a direction switching switch 54 in a portion adjacent to the air tank 53.

At this time, the configuration of the direction switching switch 54 is formed of an intermittent cylinder 541 to convert the direction of the air pressure by the push rod (P) and the return spring (S) as shown in the enlarged portion D of FIG. It is preferable to.

Finally, the chassis frame 6 is a vehicle body configuration for mounting the above-mentioned bumper frame 1 to the vehicle, as shown in FIG. 3 to form a horizontal structure facing each other on the front left and right sides of the vehicle body. As it is, the front outer surface of each of the chassis frame 6 is preferably formed to be provided with a transfer guide projection 61, bent in a concave-convex shape, as shown in the enlarged portion C of FIG.

Therefore, in the mutual coupling of the vehicle safety bumper having the above configuration;

First, as shown in FIG. 3, the airbag 21 and the air cylinder 31 are mounted as the divided structures spaced apart from each other inside the bumper frame 1 forming the link connection structure, and then the airbag 21 and the air cylinder are respectively mounted. 31 is integrally combined with each supply pipe 41 of the air circulation line 4 as a separate connection as shown in FIG. 4 (and a partial enlarged view of FIG. 4), and the air circulation line 4 extends. By connecting the drive unit 5 to the rear side of the bumper frame 1 to be installed, the bumper frame 1 is fastened to the chassis frame 6 by a combination of the transfer guide groove 111 and the transfer guide protrusion 61. By constructing it is to form a safety bumper for automobiles according to the present invention.

Thus, look at the relationship between the use and the interaction of the safety bumper for automobiles having a coupling configuration as described above are as follows.

First, the safety bumper for a vehicle according to the present invention is coupled to the front part of a vehicle as a normal bumper as shown in FIG. 2 and has a use relationship. First, a driving unit unit according to driving of a vehicle ( When the air pump 51 of 5) is operated, the air pump generates air pressure to store the air pressure generated in the air tank 53.

Thereafter, the air pressure stored in the air tank 53 is transferred to the shock absorbing part 2 and the shock absorbing part 3 through the air circulation line 4 according to the control action by the control valve 52 and the direction switching switch 54. Being supplied. The airbag 21 and the air cylinder 31 are inflated by the air pressure supplied in this way, and the bumper frame 1 having the folding sealing means 12 is opened by the chassis frame 6 as shown in FIG. 5. It is to guide a certain length toward the front in the form of guiding.

Therefore, if a frontal collision occurs while the vehicle is driving while the bumper frame 1 is protruded as described above, the bumper frame 1 has an airbag 21 and an air cylinder installed therein as shown in FIG. An elastic cushioning effect is performed by the expanded air pressure of (31).

At this time, in the case where the impact of the front collision with the bumper frame 1 is slight, the air pressure supplied to the airbag 21 and the air cylinder 31 in response to the collision external pressure is supplied to the primary safety valve 411 and the secondary safety. By bypassing as much as the impact external pressure through the valve 412 to prevent damage to the vehicle body by the increased cushioning force, and in the event of a strong collision caused by high-speed driving of cars, the first and second safety valves (411, 412) Of course, the pressure control membrane 212 and the air cylinder 31 itself of the inflated air bag 21 by the air pressure to damage the impact shocks, so that even if the damage itself, the driver can avoid from the impact Will give you the ability to do that.

On the other hand, in the case where a slight partial collision occurs to the bumper frame 1, the bumper frame 1 generates a collision inclination angle according to the link connection structure and is supplied to the airbag 21 as in the above-described frontal collision. When the air pressure is bypassed through the primary safety valve 411 and the secondary safety valve 412, the impact shock is absorbed, and in the case where a strong partial collision occurs due to high-speed driving, it is shown in FIG. Collision inclination angle In this manner, the bumper frame 1 is recessed, and at the same time, such a depression action causes the pressure regulating membrane 212 of the airbag 21 to be damaged and the impact is avoided, thereby preventing the vehicle body from being damaged. It will give you one function to protect.

In addition, the safety bumper for the vehicle that performs the above-mentioned shock absorbing and impact avoiding action during a vehicle crash accident is to reduce the volume of the vehicle by causing the bumper frame (1) to shrink when parking or stopping of the vehicle, such a reduction action In the operation, as shown in the enlarged portion D of FIG. 3, the push rod P of the direction changeover switch 54 is operated to change the flow direction of air pressure, and the airbag 21 and the air cylinder 31 are filled in the air. The inflated air pressure is sucked in, and the bumper frame 1 is contracted as shown in FIG. 5 while exerting a tensile force on the bumper frame 1 according to the connection relationship by the air cylinder 31.

At this time, the bumper frame (1) to perform the contraction and expansion as described above is to perform a stable folding action by the transport guide projection 61 of the chassis frame 6 coupled to the transport guide groove (111).

In the above, the safety bumper for a vehicle according to the present invention forms a bumper frame that performs a folding function, and has a shock absorbing device having a shock absorbing part and a buffer part therein so as to have a small impact from a large collision accident caused by a high speed vehicle. It is designed to perform a wide range of shock-absorbing actions up to contact accidents, which not only significantly reduces the driver's injury and the vehicle damage caused by the crash, but also greatly improves the safety by improving the bumper durability. ;

In addition, the flexible fluidity is provided by the bumper frame constituting the plurality of link connection structures, and according to the fluidity, the crash impact is avoided at a constant collision inclination angle when the vehicle bumper is off. It is to provide a very useful expectation effect to the user by protecting the driver safely.

Claims (4)

A honeycomb connection having a connection structure by the link members 11 and 11 'and having a divided structure that is mutually insulated into the bumper frame 1 having the folding sealing means 12, and a pressure regulating membrane 212. The shock absorbing part 2 equipped with the airbag 21 of the type and the buffer part 3 consisting of the air cylinder 31 are internally installed, and the air cylinder 31 is connected by connecting the air circulation line 4 to the rear side. ) And the drive unit 5 for controlling the airbag 21, and then the bumper frame 1 is coupled to the chassis frame 6 provided with the transfer guide protrusion 61 to selectively contract the bumper. Safety bumper for cars characterized in that it is configured to absorb the impact in the event of a vehicle crash by causing the expansion action. The air conditioner according to claim 1, wherein the drive unit (5) is configured to transmit air pressure to the air circulation line (4), and generates an air pressure (51), and an air tank (53) for storing the air pressure. And an intermittent valve 52 for controlling a driving state of the air pressure stored in the air tank, and a direction switching switch 54 for selectively converting the flow state of the driven air pressure. A safety bumper for automobiles characterized by inducing shrinkage and expansion. The air circulation line (4) according to claim 1 or 2, wherein the air circulation line (4) forms a supply pipe (41) having a primary safety valve (411) and a secondary safety valve (412). To provide air pressure in the air cylinder 31 and bypass the air pressure provided in the airbag 21 and the air cylinder 31 through the first and second safety valves 411 and 412 during a vehicle crash. Safety bumper for cars, characterized in that configured to absorb the impact shock. The bumper frame (1) of claim 1, wherein the bumper frame (1) forming a linking structure (11) (11 ') is bent in one direction with its linking member (11) (11') connecting portion in an eccentric hinge connection form. Collision inclination angle of the bumper frame (1) that is deformed during partial collision of the vehicle by taking the joint configuration ( Safety bumper for cars, characterized in that to perform a shock avoiding action according to).