JPH0976847A - Structure for grille guard in automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To push down a grille guard to a vehicle body side so as to reduce damage due to intensive collision of an obstacle against a vehicle body by journalling the base part, of the grille guard to the lower part of a vehicle body front part, rotationally. SOLUTION: When a grille guard 10 collides against an obstacle X, a force rotating the grille guard 10 to a vehicle body B side around a shaft part, 40 in the base part, of the grille guard 10 works on the grille guard 10 as shown by an arrow (a). This force also works on a plate part 25 formed on the lower face of a mounting part, 21 in the grille guard 10 so as to compress a spring, and when a head part, 52 in a bolt 50 exceeds a stepped part 27 formed in the plate part, 25 by means of this force, rotation of the plate part 25, in other words, a turnover of the grille guard 10 to the vehicle body B side is started. Because of the turnover of the grille guard 10 to the vehicle body B side, the obstacle X is prevented from rotating to the vehicle body B side around the upper part, of the grille guard 10, or its abrupt rotation is prevented, and as a result, a shock is absorbed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an automobile grill guard.

[0002]

2. Description of the Related Art In recent years, four-wheel drive vehicles, etc.
A downward facing U-shaped grille guard may be provided at the front of the vehicle body. As shown in FIG. 11, the grill guard 60 is made of a metal pipe or a thick resin material, and has an arm member 70 provided at the lower portion of the front portion of the vehicle body B in order to ensure rigidity that can withstand the impact of a collision. It is firmly fixed to by bolts.

However, when the object X collides with a large animal or person, the object X collides with the grill guard 60 and rotates rapidly toward the vehicle body, so that the upper part of the object X collides with the vehicle body B. There is a risk of bumping and damaging it.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve such a problem. In the event of a collision, the impact is mitigated and the object to be collided does not move above the grill guard. It is an object of the present invention to provide a structure of a grill guard for an automobile which can prevent the shaft from rapidly rotating toward the vehicle body side and reduce the damage of the upper part of the object to be collided against the vehicle body due to the rotation.

[0005]

The present invention is characterized in that a base of a grill card is pivotally attached to a lower portion of a front portion of a vehicle body so that the grill guard is foldable toward a vehicle body. Related to the structure of automobile grill guards. Further, it is preferable that a cushioning member is provided on the outer surface of the upper portion of the grill guard.

[0006]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a side view showing a front portion of an automobile having a grill guard having the structure of the present invention, FIG. 2 is a perspective view showing an example of the grill guard, and FIG. 3 is a partial side view of a shaft mounting portion of the grill guard. 4 is an exploded perspective view showing a shaft mounting portion of the grill guard, FIG. 5 is a sectional view taken along line 5-5 of FIG. 3, FIG. 6 is a side view showing the tilted state of the grill guard stepwise, and FIG.
7 is a partial side view showing the state of the shaft attachment portion when the grill guard falls down, FIG. 8 is a sectional view taken along line 8-8 of FIG. 7, FIG. 9 is an exploded perspective view showing another example, and FIG. 10 is a guide hole of the grill guard. It is a side view which shows the other example.

In the structure of the present invention, as shown in FIG. 1, the base portion of the grill card 10 is rotatably attached to the lower portion of the front portion of the vehicle body B so that the grill guard 10 is foldable toward the vehicle body B side. It is characterized by that.

The grill guard 10 is made of a metal pipe or a resin pipe having rigidity enough to withstand the impact of a collision, and as shown in FIG. 2, a downwardly facing U-shaped guard portion 11 and its lower portion. 12 and a mounting portion 21 that is bent in the horizontal direction toward the rear of the vehicle.

The guard portion 11 is a portion for preventing a collision object from abruptly colliding with the vehicle body at the time of a collision and for enhancing the decorativeness of the vehicle. In this guard section 11,
A reinforcing material 14 is laid between the side portions, so that the strength and decorativeness of the guard portion 11 are improved.
In addition, the guard portion 11 of this embodiment is provided with a cushioning member 13 on the outer surface of the upper portion where the object to be collided is most likely to contact.
The cushioning member 13 protects the guard portion 11 at the time of collision and also protects the object to be collided, and is made of various cushioning materials such as urethane foam or expanded polypropylene, or the surface thereof. Is covered with a skin made of a resin sheet material or the like, and is wound or fixed by adhesion or the like.

The mounting portion 21 is a portion on which the grill guard 10 is pivotally attached to the arm member 30, and the base portion 22 has a shape sandwiching the tip of the arm member 30. As well understood from FIG. 4, the base portion 22 of the mounting portion 21 has a shape in which the upper and lower surfaces are notched, and the mounting portion 2 is formed when the grill guard 10 falls down.
The upper and lower surfaces of the base 22 of No. 1 do not collide with the arm member 30. Shaft insertion holes 23, 23 are formed on both side surfaces of the base portion 22.

On the other hand, the arm member 30 is for rotatably holding the grill guard 10, and has a cylindrical shape into which the front end portion 30f can be inserted into the base portion 22 of the mounting portion 21, the base portion of which is the vehicle body. It is fixed to the lower part of B front part. Shaft insertion holes 31, 31 are provided on both side surfaces of the front end portion 30f of the arm member 30 at positions corresponding to the shaft insertion holes 23, 23 of the mounting portion 21.

Further, in this embodiment, the fall guard means for preventing the grill guard from collapsing during normal times and regulating the inclination angle of the grill guard when it falls is as follows. And provided on the arm member 30.

That is, as is well understood from FIGS. 3 and 4, the lower surface of the mounting portion 21 of the grill guard has a longitudinal direction (the front-back direction of the vehicle) of the mounting portion 21.
A plate-shaped member 25 extending vertically is erected. This plate member 25
The front side (front side of the vehicle) 25f is made thinner than the rear side (rear side of the vehicle) 25r, and a step portion 27 is formed at the boundary between the front side 25f and the shaft insertion hole formed in the base portion 22. The arc-shaped guide hole 26 having the circle 23 as the center of the circle is
It is formed from a thin portion of 5f to a thick portion of the rear side 25r. The difference in thickness between the front side 25f and the rear side 25r is usually about several mm.

On the other hand, on the lower surface of the arm member 30, a plate-like member 35 extending in the length direction of the arm member 30 (front-rear direction of the vehicle) has its front portion projected from the front end of the arm member 30, In addition, when the grill guard 10 is attached, it is erected so as to come into contact with the surface of the plate-like member 25 of the attachment portion 21 opposite to the step portion 27. This plate member 3
5, a bolt insertion hole 36 is provided at a position corresponding to the guide hole 26 of the mounting portion 21 of the grill guard 10.

The bolt insertion hole 36 and the guide hole 26 are provided at the front end 26a of the guide hole 26 when the grill guard 10 is attached to the arm member 30 in a normal state (not tilted). 36 is formed so that the bolt insertion hole 36 is formed at the rear end 26b of the guide hole 26 when the grill guard 10 is tilted toward the vehicle body B side.

Next, the mounting of the grill guard 10 will be described. First, the front end 30f of the arm member 30 is inserted into the base 22 of the mounting portion 21, and the shaft insertion holes 31 and 31 of the arm member 30 and the shaft insertion hole 2 of the grill guard 10 are inserted.
The grill guard 10 is rotatably attached to the arm member 30 by inserting the shaft component 40 into the shaft insertion hole by aligning 3 and 23. In this example, a bolt member 41 is used as the shaft component 40, and the bolt member 41 is screwed with a nut member 42 (shown in FIG. 2) to pivotally attach the grill guard 10 to the arm member 30. ing.

In addition, the guide hole 26 of the plate member 25 formed on the lower surface of the mounting portion 21 of the grill guard 10 and the bolt insertion hole 36 of the plate member 35 formed on the lower surface of the arm member 30 are shown in FIG. And FIG. 5 showing the section 5-5.
As described above, the bolt 50 is inserted and screwed into the nut 53. At this time, the head portion 52 of the bolt 50 is located at the front end 26a of the guide hole 26, and the thin portion of the front side 25f of the plate member 25 in the mounting portion and the plate member 35 of the arm member are connected to the spring S. Tighten with the nut 53 via. As a result, the head 52 of the bolt cannot pass over the stepped portion 27 formed on the plate-like member 25 of the mounting portion due to normal vibration or the like, and the grill guard 10 is prevented from falling.

Next, the operation of the grill guard 10 thus mounted at the time of collision will be described. 6 is a side view of the front portion of the vehicle body at the time of the collision, FIG. 7 is a side view of the grill guard attachment portion showing the fall of the grill guard at that time, and FIG.
FIG. 8 is a sectional view taken along line 8-8 of FIG. 7.

As shown in FIG. 6 (A), when the grill guard 10 hits the object X to be collided, the grill guard 10 has its base portion as indicated by an arrow a in FIGS. 6 (A) and 3. A force for rotating the shaft component 40 toward the vehicle body B side acts. Then, the force also acts on the plate-shaped portion 25 formed on the lower surface of the mounting portion 21 of the grill guard 10,
The spring S is compressed, and the head 52 of the bolt 50 is compressed.
When the force to overcome the stepped portion 27 formed on the plate-shaped portion 25 is reached, the plate-shaped portion 25 is rotated, that is, the grill, as shown in FIGS. 6B and 7A. Guard 1
The fall of 0 to the body B side begins. This grill guard 10
When the colliding object X falls toward the vehicle body B side, the collided object X is prevented from rotating toward the vehicle body B side around the upper portion of the grill guard 10, or abrupt rotation is prevented, and at the same time, the shock is absorbed. The bolt 50 moves in the guide hole 26 toward the rear of the vehicle, as shown in FIG.

As the grill guard 10 further falls toward the vehicle body B side, as shown in FIGS. 7B and 8B, the rear end of the guide hole 26 and the bolt member 50 are brought into contact with each other. When this happens, the fall of the grill guard 10 stops. Therefore, by adjusting the length of the guide hole 26, the tilt stop position of the grill guard 10 can be adjusted, and the grill guard 10 can be prevented from hitting the vehicle body.

Further, as in this example, the grill guard 1
When the cushioning member 13 is provided on the outer surface of the upper part of 0, the impact at the time of collision can be more efficiently absorbed.

In this embodiment, the grill guard 10
Although the guide hole 26 is provided in the plate-shaped portion 25 of the arm member 30 and the bolt insertion hole 36 is provided in the plate-shaped portion 35 of the arm member 30, as shown in FIG. 9, the bolt insertion hole 36A is provided in the plate-shaped portion 25A of the grill guard 10A. Alternatively, the guide hole 26A may be provided in the plate-shaped portion 35A of the arm member 30A.

FIG. 10 shows another example for preventing the grill guard from falling. In this example, a constricted portion 28 for accommodating the shaft of a bolt is formed on the inner circumference of the front end of the guide hole 26B. When the grill guard 10B is in the normal state, the constricted portion 2 is formed.
Positioning the bolt 50 before 8 prevents the grill guard 10B from falling due to vibration or the like. In addition, when the grill guard 10B starts to fall, the bolt 50
The shaft moves through the constricted portion 28 to the rear side of the guide hole 26B.

[0024]

As shown and described above, according to the structure of the grill guard for an automobile of the present invention, in the event of a collision, the grill guard falls toward the vehicle body side and absorbs the impact. Is less damaged. Further, the fall of the grill guard can prevent the collided object from rotating around the grill guard toward the vehicle body, or can be prevented from rapidly rotating. It is less likely to hit the car and get damaged, and damage to the car body can also be reduced.

[Brief description of drawings]

FIG. 1 is a side view of a front portion of an automobile having a grill guard of the automobile having the structure of the present invention.

FIG. 2 is a perspective view of the grill guard.

FIG. 3 is a partial side view of a grill guard shaft attachment portion.

FIG. 4 is an exploded perspective view showing a shaft attachment portion of the grill guard.

5 is a diagram showing a cross section taken along line 5-5 of FIG.

FIG. 6 is a side view showing the tilted state of the grill guard step by step.

FIG. 7 is a partial side view showing a state of the shaft attachment portion when the grill guard falls down.

8 is a sectional view taken along line 8-8 in FIG. 7;

FIG. 9 is an exploded perspective view showing the vicinity of a grill guard shaft attachment portion of another example.

FIG. 10 is a side view showing another example of the guide holes of the grill guard.

FIG. 11 is a side view showing the state of collision of a conventional grill guard step by step.

[Explanation of symbols]

 10 Automotive grill guard 11 Guard part 13 Buffer member 21 Mounting part 22 Base part 23 Shaft insertion hole 30 Arm member 31 Shaft insertion hole 40 Shaft part

Claims (2)

[Claims] 1. A structure of a grill guard for an automobile, wherein a base of a grill guard is rotatably attached to a lower portion of a front portion of a vehicle body, and the grill guard is foldable toward a vehicle body. 2. The structure of an automobile grill guard according to claim 1, wherein a cushioning member is provided on an outer surface of an upper portion of the grill guard.