KR100598683B1 - Mounting Structure of Gas Lifter for Securing the Safty of Pedestrian - Google Patents

Abstract

The present invention is a gas lifter mounting structure for preventing the pedestrian injury from being increased by the operating force (that is, reaction force) of the gas lifter when the head of the pedestrian hits the vicinity of the gas lifter of the car hood due to the car accident It is intended to provide.

To this end, the present invention, the body of the ball studs to the support bracket and the ball of the ball studs and the ball joint of the gas lifter through the bolster between the support bracket and the gas lifter is fixed to the vehicle body, Between the body is provided with a gas lifter mounting structure to mount the shock absorbing bracket so that the shock absorbing bracket is deformed in accordance with the impact load applied to the hood to push out the gas lifter fixed to the ball.

Gas Lifter, Hood, Ball Joint, Bracket, Shock Absorption

Description

Mounting Structure of Gas Lifter for Securing the Safty of Pedestrian}

1 is a view illustrating a gas lifter operating state in a hood of a conventional gas lifter equipped vehicle, with the hood open.

2 is a view illustrating a gas lifter arrangement structure in a hood of a vehicle equipped with a conventional gas lifter in a state where the hood is closed.

3A is a cross-sectional view taken along the line A-A of FIG. 2,

3B is a cross-sectional view taken along line B-B of FIG. 2.

4 is a view briefly showing a gas lifter mounting structure according to an embodiment of the present invention.

5 is a view showing the structure of the buffer bracket according to an embodiment of the present invention.

6A is a cross-sectional view illustrating a mounting structure of a gas lifter according to an embodiment of the present invention.

FIG. 6B is a view showing that the shock absorber is released from the gas lift in the vehicle body direction (fender side) while the shock absorbing bracket is deformed by an external force according to the gas lifter mounting structure shown in FIG. 6A.

<Description of Symbols for Main Parts of Drawings>

1: gas lifter 2: cylinder

3: rod 4: hood

5: body 10: support bracket

11: Body mount part 12: Extension part

20a, 20b: ball studs 21a, 21b: ball

22a, 22b: body 30a, 30b: joint

50: buffer bracket 51: top plate

52: lower plate 53: intermediate plate

55: mounting hole 56: curved portion

The present invention relates to a mounting structure of a gas lifter installed in a vehicle. More specifically, the operating force of the gas lifter when the head of the pedestrian hits the vicinity of the gas lifter mounted on the vehicle hood due to an accident The present invention relates to a gas lifter mounting structure capable of preventing an injury of a pedestrian from being increased due to reaction force.

In general, the hood covering the engine compartment of the vehicle is operated to release the locking lever of the hood by operating the release button in the vehicle, and then open up in the cab direction outside the vehicle. In this case, as shown in FIG. 1, the gas lifter 1 is provided to assist opening and closing of the hood 4 on both the left and right sides thereof, so that the hood 4 can be easily opened with a small force.

Looking briefly at the structure of the gas lifter 1, the gas lifter 1 has a cylinder (2) sealed with gas and oil, a rod (3) which is partially inserted into the cylinder and reciprocated, and a tip of each of the cylinder and the rod. The front end (cylinder side joint) of the cylinder (2) is rotatably coupled to the hood (4) of the vehicle, and the front end (rod side joint) of the rod (3) is a vehicle body (specific volume). It is rotatably coupled to the fender (5).

When the gas lifter 1 opens the hood 4, the hood is softly opened with a small force by the operating force of the gas lifter 1 operating in the direction in which the hood is opened, so that the hood can be kept open. In the case of closing the hood (4) to the force to a certain degree or more to provide a reaction force to close the hood (4).

When the hood 4 is closed, the tip fixing part of the cylinder 2 and the tip fixing part of the rod 3 are rotated, respectively, and as shown in FIG. 2, the gas lifter 1 is in the longitudinal direction of the hood 4. Is placed. At this time, the rod of the gas lifter 1 is almost completely inserted into the cylinder.

A description with reference to FIGS. 2, 3A, and 3B is as follows.

FIG. 3A is a cross-sectional view showing the mounting structure of the rear portion (cab cab direction) of the gas lifter 1 shown in FIG. 2, that is, the portion where the rod 3 is fixed, and the rod 3 of the gas lifter is bolstered. (20a) and the support bracket (10) shows the structure that is rotatably fixed to the vehicle body. That is, the support bracket 10 is fixed to the vehicle body 5 by the fixing means 40, and the rod 3 of the gas lifter has a ball stud whose joint 30a of the rod end is fixed to the support bracket 10 ( The ball 21a and the ball joint of 20a are rotatably fixed.

FIG. 3B is a cross-sectional view showing the mounting structure of the front portion (opposite the cab) of the gas lifter 1 shown in FIG. 2, that is, the portion where the cylinder 2 is fixed. Unlike the gas lifter rear part shown in FIG. 3A, the front end of the cylinder 2 of the gas lifter front part is fixed to the hood 4, and a ball stud for mediating the cylinder 2 to be fixed to the hood 4 ( 20b) is bolted directly to the hood 4. As described above, the ball 21b of the ball stud 20b is ball jointed with the joint 30b at the tip of the cylinder 2 so that the cylinder 2 is rotatable with respect to the ball stud 20b.

This operating force of the gas lifter acts in the direction in which the rod pushes the cylinder (approximately upward in front of the vehicle) while the hood is closed, and thus acts as an obstacle to downward movement and deformation of the hood. If the head of the pedestrian hits the hood near the gas lifter, the injury value is increased. However, the conventional gas lifter mounting structure as described above is problematic because no means for mitigating or absorbing the impact of a pedestrian in a car accident is devised.

In order to solve such a problem, the present invention provides a method for preventing a pedestrian's injury from rising due to the operating force of the gas lifter when the head of the pedestrian hits the hood near the gas lifter due to a car accident. The mounting structure of the lifter is deformed to provide a gas lifter mounting structure that allows the gas lifter to be separated from the mounting portion.

In order to achieve the above object, the gas lifter mounting structure according to the present invention includes a ball stud between a support bracket fixed to a vehicle body and a gas lifter, a body of a ball stud in a support bracket, and a ball stud ball in a gas lifter. Joints and ball joints, and between the ball and the body of the ball studs, a shock absorbing bracket is mounted so that the shock absorbing bracket is deformed according to the shock load applied to the hood so that the gas lifter fixed to the ball can be pushed out. It is done.
More specifically, one end is fixed to the body side and the other end is fixed to the hood side to assist opening and closing of the hood, and the body-side mounting structure of the gas lifter having a domed joint, which is fixed to the vehicle body and the body fixing part firmly fixed to the vehicle body, and the inside of the fender A support bracket having an extension part which is bent and extended from the vehicle body fixing part so as to be spaced apart with respect to the predetermined space; A ball stud having a body fixed to an extension of the support bracket, a ball protruding toward the inner side of the fender, and a ball to which the joint of the gas lifter is rotatably coupled, and a neck connecting the ball to the body; An intermediate plate having a mounting hole formed to be fitted to the neck, an upper plate bent from an upper end of the intermediate plate and extending in an opposite direction to the inner side of the fender, and bent from a lower end of the intermediate plate at a predetermined interval below the hood; A buffer bracket extending in the direction of the inner side of the fender and having a lower plate fixed to the vehicle body; And a curved portion formed along the circumference of the mounting hole and protruding toward the inner side of the fender so that the coupling between the ball joint and the ball joint can be easily separated when an external force is applied to the upper plate of the buffer bracket.

At this time, the buffer bracket, it is preferable that the bent portion bent at an acute angle between at least one side between the upper plate and the intermediate plate and between the lower plate and the intermediate plate so that the buffer bracket can be easily deformed by the external force applied to the upper plate.

The gas lifter consists of a cylinder sealed with gas and oil, a rod which is partially inserted into the cylinder and a reciprocating rod, and a joint formed at each end of the cylinder and the rod to support or open the hood by its operating force. An apparatus for allowing the hood to be supported, wherein the cylinder side joint is rotatably coupled to the hood of the vehicle and the rod side joint to the vehicle body, respectively. The present invention relates in particular to a vehicle body side mounting structure of a gas lifter.

In the present description, the vehicle body may broadly refer to a vehicle body excluding a hood of a vehicle, and narrowly refer to a portion in which a fender panel forming the exterior of the vehicle is fixed to an upper side of the fender apron panel. When referred to separately from the fender panel, the latter shall be referred to.

Hereinafter, with reference to the accompanying drawings looks at the mounting structure of the gas lifter for the vehicle hood for pedestrian protection according to a preferred embodiment of the present invention. Unless otherwise specified, the same names refer to the same or equivalent members and the same reference numerals are used for the same members.

FIG. 4 is a view for briefly illustrating a mounting structure of the gas lifter 1 according to an embodiment of the present invention, and the rear part of the gas lifter 1 (cab side), that is, the joint 30 at the tip of the rod 3 is shown. ) Is mounted on the vehicle body 5 by ball joint coupling with the ball stud 20.

The support bracket 10 having a “L” side shape is a vehicle body fixing part 11 fixed to the vehicle body 5 by a fixing means 50 such as welding or a bolt and an upper vertical direction of the vehicle body fixing part. Consists of an extension portion 12 is formed to extend, the extension portion 12 of the support bracket 10 is fixed to the vehicle body 5 so as to be spaced apart from the fender inner portion 6 of the vehicle body in a predetermined space. In addition, a hole is formed on the upper side of the extension part 12 and penetrates the hole so that the ball stud 20a is firmly fixed to the support bracket 10.

The ball stud 20a includes a body 22a having a groove formed along a circumference thereof so as to be firmly fixed to the support bracket 10, a ball 21a extending from the body, a body 22a and a ball ( It consists of the neck 23a of the narrow part which connects 21a) (it is a structure from which a diameter becomes small gradually from a body side to a ball side direction). The ball stud 20a fixed to the extension 12 of the support bracket 10 should not move or rotate in a fixed state, and the ball 21a is fixed to face the inner side of the fender.

The joint 30a of the gas lifter 1 has a round dome shape to accommodate the ball 21a of the ball stud 20a, and the joint 30a is assembled to the ball 21a of the ball stud. As a result, the gas lifter 1 is fixed to the ball stud 20a in a rotatable manner. The specific structure for allowing the joint 30a to be rotatably fixed to the ball 21a is in accordance with conventional known art.

On the neck 23a of the ball stud 20a fixed to the support bracket 10, a shock absorbing bracket 50, one side of which is fixed to the vehicle body 5 together with the support bracket 10 by the fixing means 40, is mounted. do. Reference numeral 56 is a curved portion of the buffer bracket 50 will be described below.

Figure 5 shows such a buffer bracket 50, the buffer bracket 50 is an intermediate plate formed with a mounting hole 55 so that the buffer bracket 50 can be fitted to the neck 23a of the ball stud (20a) (53) and an upper plate (51) extending in an approximately vertical direction from the upper side of the intermediate plate and a lower plate (52) extending in an approximately forward vertical direction from the lower side of the intermediate plate. That is, the upper plate 51 and the lower plate 52 have plates extending in opposite directions with respect to the intermediate plate 53.

The intermediate plate 53 is formed with a curved portion 56 protruding gently forward around the mounting hole 55, and the intermediate plate 53 and the upper plate 51, and the intermediate plate 53 and the lower plate 52, respectively. At the connecting portion, a bent portion 54 bent at an acute angle is formed.

At this time, the mounting hole 55 is preferably formed in a portion biased to the upper side of the intermediate plate 53, the bent portion 54a between the upper plate 51 and the intermediate plate 53 is formed so that the curved surface protrudes forward The curved portion 54b between the lower plate 52 and the intermediate plate 53 is preferably formed such that the curved surface protrudes backward.

Referring to Figure 5 and Figure 6a looks at the mounting structure of the shock absorbing bracket (50).

The lower plate 52 of the shock absorbing bracket 50 is fixed to the vehicle body 5 together with the support bracket 10 by the fixing means 40, and the upper plate 51 of the shock absorbing bracket 50 is closed in the engine compartment. The hood 4 of the upper plate 51 is disposed so as to be spaced apart at a predetermined interval, the intermediate plate 53 of the shock absorbing bracket 50 is mounted on the neck 23a of the ball stud 20a. However, the middle signboard 53 is not firmly fixed to the neck 23a around the circumference, but the mounting bracket 55 is deformed while the buffer bracket 50 is deformed when an external force of a predetermined value or more is applied to the upper plate 51. It slides in the neck 23a and is fixed in the state which can be deformed.

In addition, the shock absorbing bracket 50 is formed with bent portions 54a and 54b so that the shock absorbing bracket can be more easily deformed by an external force applied to the upper plate 51. Furthermore, the curved surface of the bent portion 54a has a body direction (more specifically, The inner side of the fender) and the curved surface of the bend 54b are mounted to protrude in the engine compartment direction, so that the shock absorbing bracket 50 tends to be deformed only to the fender side.

In addition, the coupling hole 55 is formed in a position biased to the upper side of the intermediate plate 53, the deformation force due to the impact transmitted from the upper plate 51 is transmitted to the vicinity of the coupling hole more quickly, and around the coupling hole 55 Since the curved portion 56 protrudes toward the joint 30a, the deformation force transmitted near the coupling hole is transmitted to the joint 30a through the curved portion 56, and the deformation of the shock absorbing bracket tends toward the joint side, that is, the inner side of the fender. Will have

As shown in FIG. 6B, when an impact is substantially perpendicular to the hood 4 due to an automobile accident, the hood 4 is deformed downward to impact the upper plate 51 of the shock absorbing bracket 50. Due to such an impact, the shock absorbing bracket 50 is deformed and pushes the joint 30a fixed to the ball 21a of the ball stud toward the side of the fender 6. Accordingly, since the rod of the gas lifter may be separated from the ball stud by the deformation of the shock absorbing bracket 50, the operating force of the gas lift acts as a reaction force against the downward deformation or movement of the hood 4, and raises the injury value of the pedestrian. It won't happen. At this time, the support bracket should be firmly fixed to the vehicle body and have a rigid material, and the shock absorbing bracket should be relatively thin in thickness or easily deformable material.

According to the gas lifter mounting structure according to the embodiment of the present invention as described above, as the head of the pedestrian hits the hood due to the car accident, the shock absorbing bracket is directly deformed as the hood moves downward, and the shock absorbing bracket As the gas lifter coupled to the ball stud is pushed away from the ball stud according to the deformation of the pedestrian, the injury value of the pedestrian is prevented due to the operating force applied to the hood by the gas lifter.

Claims (2)

One end is fixed to the body side and the other end is fixed to the hood side to assist opening and closing of the hood, and as a body side mounting structure of the gas lifter having a domed joint 30a, Support bracket (10) having a vehicle body fixing portion (11) which is firmly fixed to the vehicle body, and an extension portion (12) which is bent and extended from the vehicle body fixing portion so as to be spaced apart and spaced with respect to the fender inner portion (6). ; The body 22a fixed to the extension part 12 of the support bracket, the ball 21a protruding toward the inner side of the fender 6, and the joint 30a of the gas lifter are rotatably coupled to the body and the ball. A ball stud 20a having a neck 23a to be formed; Intermediate plate 53 having a mounting hole 55 is formed to be fitted to the neck 23a, and bent from the upper end of the intermediate plate extending in the opposite direction on the inner side of the fender 6, spaced apart a predetermined distance under the hood A buffer bracket (50) having an upper plate (51) disposed thereon and a lower plate (52) which is bent from the lower end of the intermediate plate and extended in the direction of the fender inner portion and is fixed to the vehicle body; And It is formed along the circumference of the mounting hole 55, and protrudes toward the inner side of the fender 6 so that the coupling between the balls 21a and the joint 30a can be easily separated when an external force is applied to the upper plate of the buffer bracket. Curved portion 56; Gas lifter mounting structure comprising a. The method of claim 1, wherein the buffer bracket 50, At least between the upper plate 51 and the intermediate plate 53 and between the lower plate 52 and the intermediate plate 53 so that the shock absorbing bracket can be easily deformed toward the fender 6 by the external force applied to the upper plate 51. Gas lifter mounting structure characterized in that the bent portion bent at an acute angle on either side.

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