JPH11165651A - Vehicle frame front structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle frame front structure which can ensure an occupant space by regulating the movement of a front wheel and decreasing the invading amount of a side frame into the cabin side. SOLUTION: A stopper 1 is protruded and fixed at the outer-periphery surface of a side frame 7 disposed near a front wheel 14. A reinforcement 2 is disposed inside the side frame 7 on which the stopper 1 is disposed to reinforce the stopper 1. In case of vehicle collision, the outer-periphery rear surface 17 of the front wheel 14 hits the stopper 1 and the movement of the stopper 1 is restrained by the reinforcement 2, so that the movement of the front wheel 14 is regulated. It is thus possible to suppress the side frame 7 from being deformed to the cabin side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front structure of a side frame near a front wheel of a vehicle, which restricts the front wheel from entering the body of the vehicle at the time of a collision of the vehicle, thereby reducing occupant space. The present invention relates to a front structure of a vehicle frame suitable for securing.

[0002]

2. Description of the Related Art In the event of a collision of a vehicle, various solutions have been conventionally used to solve the problem of the tire entering the body and reducing the occupant space. For example,
As a solution to this problem in a monocoque body vehicle, Japanese Patent Application Laid-Open Nos. 5-116647 and 5-85414 can be mentioned.

Japanese Unexamined Patent Publication (Kokai) No. 5-116647 discloses a "front structure of an automobile body" which includes a front side member, a floor frame integrally connected to the front side member and bifurcated to a rocker and a floor frame. A front structure of a frame having a subframe coupled to both of the floor frames, wherein a coupled portion behind a suspension arm having a coupled portion to both the front side member and the floor frame includes the subframe. Is provided between the joint with the front side member and the joint with the floor frame. By making the connection structure of the suspension arm as described above, in the event of a vehicle collision, the portion of the connection portion behind the suspension arm is largely deformed without stretching, and the front wheel is largely turned inward in the lateral direction. When the tire is displaced, the contact area between the tire and the member on the vehicle body side becomes large, the amount of impact energy absorbed becomes large, and the penetration of the front wheel into the vehicle body is restricted.

On the other hand, Japanese Unexamined Patent Publication No. 5-85414 discloses a "front vehicle body structure of an automobile" in which a front wheel turning means for turning the front wheels left and right at the time of a collision of a vehicle is provided, so that a crash between the front wheels and the vehicle body side is provided. The stroke is increased to prevent the front wheels from entering the vehicle body. Also disclosed is a means for forming an inclined surface on the front wheel side of a side sill that contacts the front wheel, and positively turning the front wheel outward.

[0005]

The above-mentioned prior arts are effective in controlling the intrusion of the tire into the vehicle body, but these are applied to a monocoque body vehicle as described above. It is difficult to apply to RV vehicles with frames. That is, in the case of an RV vehicle, it is difficult to provide a large energy absorption zone at the front like a monocoque body vehicle. Further, the structure around the front suspension of the RV vehicle is solid, and the deformation state is different from that of the monocoque body vehicle, so that it is difficult to apply the above-mentioned known technology.

[0006] In addition, in an RV vehicle, a means for stopping the movement of the front wheel by arranging a stopper or the like for restricting the movement of the front wheel on the movement trajectory at the time of the collision of the front wheel may be considered. However, a side sill, a torque box, a rocker panel and the like are arranged behind the front wheel, and there are cases where the stopper cannot be arranged in front of them to restrict the movement of the front wheel. When the rigidity around the stopper is insufficient, the periphery of the stopper is deformed by the front wheel, the stopper is disengaged from the front wheel, and a problem that the movement of the front wheel cannot be restricted easily occurs.

The present invention has been made in view of the above circumstances, and is applicable to an RV with a frame.
An object of the present invention is to provide a front structure of a vehicle frame in which the amount of front wheel retreating at the time of a vehicle collision is restricted to reduce the amount of front wheel intrusion into the vehicle body, thereby securing occupant space.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a side frame provided on a side frame near a front wheel for restricting movement of the front wheel at the time of a vehicle collision. Wherein the front structure comprises a stopper provided to protrude from an outer surface of the side frame, and a reinforce fixed to an inner surface of the side frame provided with the stopper, The stopper is formed to have a shape and a position capable of contacting the outer peripheral rear surface of the front wheel at the time of a vehicle collision, and the reinforce has a rigidity for preventing deformation of the side frame at that portion due to an impact force. This constitutes a front structure of a vehicle frame having:

In the prior art, when a vehicle collides, the front wheel collides directly with the side frame, causing a large deformation of the side frame. As a result, the front wheel approached the vehicle body side, resulting in a reduction in the occupant space of the vehicle. However, in the front structure of the vehicle frame of the present invention, the provision of the stopper and the reinforce allows the front wheel The stopper hits the stopper and the stopper is reinforced by the reinforce, so that the movement of the front wheel is surely restricted by the stopper, and only the front frame of the side frame itself is largely deformed. Approach is greatly reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the front structure of a vehicle frame according to the present invention will be described below in detail with reference to the drawings. First,
A schematic structure of the vicinity of the side frame to which the stopper of the present invention is fixed and the support structure of the front wheel will be described with reference to FIG. FIG. 2 is a view of the vehicle as viewed from below. Cross members 9, 10, 11 are provided on the side frames 7.
Has been erected. A front mount bracket 8 is fixed to the outside of the side frame 7 on which the cross member 9 is installed. A base end side of the suspension arm 12 is attached to the cross members 10 and 11. A front wheel 14 is attached to the suspension arm 12 via a knuckle arm 13 or the like. A torque rod 15 is connected to the suspension arm 12, and a stabilizer 16 and the like are connected to the knuckle arm 13. Also, front wheel 1
A rear side sill 18 is disposed behind the side sill 4.

FIG. 4 is a diagram showing an outline of a front structure of a frame in an RV vehicle to which the present invention is not applied, and a deformed state of a main part at the time of a collision of the vehicle in that case. As shown in FIG. 4, the front wheel 14 and the side frame 7, the front mount bracket 8, and the like are normally located far apart. At the time of collision of the vehicle, the front wheel 14 is rotated rearward while being pushed rearward in the direction in which the outer peripheral rear surface 17 approaches the side frame 7 side as shown in the figure, until the front wheel 14 contacts the side frame 7 and the front mount bracket 8. Stroke (stroke a
), The side frame 7 and the like are further pressed and deformed as shown. Therefore, the outer peripheral rear surface 17 of the front wheel 14 enters the inside of the vehicle. For this reason, there arises a problem that the front wheel 14 and the like enter the vehicle interior and narrow the occupant space.

FIG. 1 shows a detailed structure of the stopper 1, the reinforce 2 and the reinforce 21 in the present invention. As shown in FIGS. 1 and 2, the stopper 1 is disposed in front of the vicinity of the front mount bracket 8, protrudes from the outer surface of the side frame 7, and is fixed to the outer surface. This position corresponds to a position where the outer peripheral rear surface 17 of the front wheel 14 abuts during a vehicle collision.

As shown in FIG. 1, the stopper 1 comprises a stopper body 3 bent and formed into a substantially L-shaped frame shape, and a reinforcing member 4 and the like fixed to the inside and outside thereof. The stopper body 3 is fixed by welding its base end to the outer surface of the side frame 7, and is arranged so as to protrude as described above.

As shown in FIGS. 1 and 2, the reinforce 2 and the reinforce 21 are connected to the side frame 7 where the stopper 1 and the front mount bracket 8 are fixed.
And is fixed to the side frame 7 and arranged inside. As shown in FIG. 1, the reinforcement 2 includes a U-shaped inner member 5 fixed to the side frame 7 side and a U-shaped outer member 6 fixed to the inner member 5. It consists of what forms a rigid body. In addition, the inner member 5 and the outer member 6 have a shape in the longitudinal direction such that they can closely contact each other along a curve inside the side frame 7. The rear side is fixed to a bracket 19 on a bracket 20 for fixing the cross member 9 to the side frame 7.

FIG. 3 shows changes in various parts of the vehicle frame according to the present invention in the event of a collision of a vehicle having a front structure.
Due to the collision, the front wheel 14 retreats while rotating in a direction in which the outer peripheral rear surface 17 approaches the side frame 7 side. As a result, the front wheel 14 hits the protruding end of the stopper 1 and is restrained from further retreating. Stopper 1
Is reinforced and supported by the reinforce 2 disposed behind it, so that even if a large impact force from the front wheel 14 acts, it hardly moves or changes and maintains its position. Therefore, only the portion of the side frame 7 and the like that is located forward of the position where the stopper 1 and the reinforcement 2 are arranged is deformed. As described above, the front wheel 14
Moves only the stroke b << a, and the side frame 7
And the like, the amount of change is significantly reduced as compared with FIG. for that reason,
The amount of invasion of the wheel outer peripheral rear surface 17, the side frame 7, and the like into the vehicle interior is greatly reduced.

The reinforce 2 is a cross member 9
And the like, the overall rigidity therearound is extremely large, and the amount of movement of the front wheel 14, the side frame 7, and the like can be reduced as described above.

[0017]

1) According to the front structure of the vehicle frame according to the first aspect of the present invention, the stopper and the reinforcement for reinforcing the stopper are arranged on the side frame, so that the front wheel, the side frame, etc. Movement and deformation are greatly reduced, and the amount of intrusion of the side frames and the like into the vehicle compartment side is reduced, and occupant space can be secured.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a detailed structure of a front structure of a vehicle frame according to the present invention.

FIG. 2 is a plan view showing an outline of a front structure of a vehicle frame around a side frame and a front wheel in which a stopper and a reinforcement according to the present invention are arranged.

FIG. 3 is a plan view showing a state of movement of a front wheel and a deformed state of a side frame and the like when an impact force acts on a front structure of a vehicle frame according to the present invention.

FIG. 4 is a plan view showing movement of a front wheel and deformation of a side frame and the like when an impact force acts on a front structure of a conventional frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stopper 2 Reinforce 3 Stopper body 4 Reinforcement member 5 Inner member 6 Outer member 7 Side frame 8 Front mount bracket 9 Cross member 10 Cross member 11 Cross member 12 Suspension arm 13 Knuckle arm 14 Front wheel 15 Torque rod 16 Stabilizer 17 Peripheral rear surface 18 Side sill 19 Bracket 20 Bracket 21 Reinforce

Continuing from the front page (72) Inventor Hiroyuki Nagae 8 Dosanagi, Fujisawa-shi, Kanagawa Prefecture Isuzu Motors Fujisawa Plant Co., Ltd. (72) Inventor Masafumi Sakamoto 8 Issutra, Fujisawa-shi Kanagawa Prefecture Isuzu Motors Fujisawa Plant Co., Ltd.

Claims (1)

[Claims] 1. A front structure of the side frame, which is provided on a side frame near a front wheel and restricts movement of the front wheel at the time of a collision of a vehicle, wherein the front structure is a front structure of the side frame. A stopper protruding from the outer side surface; and a rain force fixed to the inner surface side of the side frame provided with the stopper, wherein the stopper abuts on the outer peripheral rear surface of the front wheel during a vehicle collision. The front structure of a vehicle frame, wherein the front structure is formed in a possible shape and position, and the reinforce has a rigidity to prevent deformation of the side frame at the site due to an impact force.