JP2008213662A - Vehicle body side part structure for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance transmission efficiency of collision load from a front pillar to a front side door, to store a load transmission member in width of the front side door at compact so as not to be interfered to other articles and so as not to form an obstacle, and to prevent deformation and damage of the front pillar and an outer surface of the front side door. <P>SOLUTION: A pillar stiffener 4 for reinforcing the front pillar FP and a door stiffener 16 for reinforcing the front side door FD are provided. The load transmission member 20 for transmitting front surface impact load from the pillar stiffener 4 to the door stiffener 16 through a penetration hole 6 opened on a pillar inner panel 3 of the front pillar FP is provided between both stiffeners 4, 16. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides a front pillar provided on the side of a vehicle body so that the front side door can be opened and closed via a door hinge, and a frontal collision load is transmitted to the front side door via the front pillar. The present invention relates to a vehicle body side structure that improves the efficiency of load transmission to a door and effectively suppresses deformation of the vehicle body.

  Conventionally, when a car collides with the front, the front pillar on the side of the vehicle body is strongly reinforced in order to suppress deformation of the cabin due to the impact load. However, in order to suppress the deformation of the cabin by reinforcing the front pillar, it is necessary to reinforce against the bending moment to the rear of the front pillar, which is inefficient and greatly increases the weight and cost of the front pillar. There is an inconvenience.

  Therefore, in recent years, in order to eliminate such inconvenience, as shown in FIG. 5, a method has been proposed in which the frontal collision load is transmitted from the front pillar to the front side door to suppress the deformation of the cabin. By the way, since the front side door needs to be opened and closed with respect to the vehicle body, the front side collision load is transmitted from the front pillar to the front side door through the door hinge because it is connected to the vehicle body only through the door hinge. Then, as shown by the arrows in FIG. 5, the load is offset from the front pillar and transmitted to the front side door, and there is a problem that load transmission efficiency deteriorates.

Therefore, in the one disclosed in Patent Document 1 described later, when the load transmission member fixed to the inner surface of the front side door is extended to the front pillar side and the front pillar is subjected to rotational displacement by receiving a front collision load, the load transmission member is moved to the front side. There has been proposed a structure in which the load is transmitted to the front side door by engaging with a pillar.
JP 2006-232052 A

  However, in the one disclosed in Patent Document 1, since the load transmitting member is provided outside the front pillar and the front side door, this not only disturbs the contour of the cabin space, but also this is another object. There is also a problem that the outer surface of the front pillar and the front side door may be deformed and damaged by the load from the load transmitting member. To prevent this deformation and damage, the outer surfaces of the front pillar and the front side door are reinforced separately. There is also a problem that needs to be done.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a new vehicle body side structure that solves the above-described problems.

In order to achieve the above object, according to the first aspect of the present invention, the front side door is provided on the front pillar provided on the side of the vehicle body so that the front side door can be opened and closed via the door hinge, and the front collision load is applied to the front side door via the front pillar. In the vehicle body side structure that is transmitted,
The front pillar is provided with a pillar stiffener that reinforces the front pillar, and the front side door is provided with a door stiffener that reinforces the front side door, and is opened to the pillar panel of the front pillar between the pillar stiffener and the door stiffener. A load transmitting member for transmitting a front impact load from the pillar stiffener to the door stiffener is provided through the through-hole.

In order to achieve the above object, according to a second aspect of the present invention, a front pillar provided on a side portion of a vehicle body is provided such that the front side door can be opened and closed via a door hinge, and a front collision load is applied to the front side door via the front pillar. In the vehicle body side structure that is transmitted,
The front pillar is provided with a pillar stiffener that reinforces the front pillar, and the load transmitting member fixed to the pillar pillar is made to face the front end surface of the front side door through a through hole opened in the pillar panel of the front pillar. It is characterized by.

  According to the invention described in the claims, the frontal collision load can be transmitted from the Pillar stiffener to the front door through the load transmission member passing through the pillar panel, so that the collision from the front pillar to the front side door is possible. The load transmission efficiency can be increased, and the front pillar can be prevented from being deformed while reducing the weight of the front pillar, thereby suppressing the deformation of the cabin and ensuring the light opening and closing of the front side door.

  Further, the load transmitting member is housed compactly within the width of the front side door and does not interfere with other objects and does not get in the way.

  In particular, according to the first aspect of the present invention, the frontal collision load acts on the door inner stiffener from the Pillar stiffener through the load transmitting member, so that the frontal collision load is directly applied to the outer surfaces of the front pillar and the front side door. By avoiding the action, the outer surfaces are not deformed or damaged.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below based on examples of the present invention shown in the accompanying drawings.

  FIG. 1 is a side view of an automobile having a vehicle body side part structure according to the present invention, FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG. 1, and FIG. 3 is a partial perspective view of FIG. is there.

  In FIG. 1, a front pillar FP, a center pillar CP, and a rear pillar RP that extend in the vertical direction of the automobile body are spaced in the front-rear direction at the front, middle, and rear parts of the left and right sides of the vehicle body as a vehicle body. The front side door FD can be opened and closed between the front pillar FP and the center pillar CP, and the rear side door RD can be opened and closed between the center pillar CP and the rear pillar RP. It is arranged to be possible.

  A rear end portion of the apron upper member 1 extending in the front-rear direction is integrally joined to an intermediate portion in the longitudinal direction of the front pillar FP, and the apron upper member 1 is connected to the front of the vehicle. When a collision occurs, the load transmission member receives a collision load on the rear side of the automobile.

  As shown in FIG. 2, the front pillar FP is formed in a hollow rectangular column shape having a closed cross-section structure by joining the pillar outer panel 2 and the pillar inner panel 3, and the front pillar FP is fixed therein. Reinforced by a pillar stiffener 4. The pillar stiffener 4 is formed in a U-shaped cross section, and the inner half, that is, the cabin-side half, is joined to the inner stiffener 5 to form a double structure. On the inner side surface of the front pillar FP reinforced by the double structure pillar stiffener 4, one end of a flat bell crank-shaped door hinge 8 that supports the front side door FD so as to be opened and closed is formed by a plurality of bolts and nuts 9. It is fixed.

  The front side door FD is disposed slightly deviated inward in the vehicle width direction (cabin side) with respect to the front pillar FP, and the door outer panel 14 and the door inner panel 15 are integrally joined as usual. And has a closed cross-sectional structure. The front end surface of the front side door FD is reinforced by a double structure with a door inner stiffener 16 joined to the inner surface of the front side door FD, and a plurality of hinge brackets 10 are located on the inner side (cabin side) of the front end surface. Are fixed by bolts and nuts 12, and the door hinge 8 is rotatably connected to these hinge brackets 10 via hinge pins 11.

  The outer half of the front end surface of the front side door FD faces the rear end surface of the front pillar FP with a gap D therebetween. As shown most clearly in FIG. 3, the base end of the load transmitting member 20 is welded to the door inner stiffener 16 of the front side door FD. The load transmission member 20 includes a straight pipe member 20B that is erected and fixed to a base mounting seat 20A. The pipe member 20B passes through the door outer panel 14 and crosses the gap D to the front. Furthermore, it opens to the pillar inner panel 3 of the front pillar FP, passes through the through-hole 6 and enters the front pillar FP, and its free end faces the pillar stiffener 4 with a small gap d. Yes. And this load transmission member 20 is arrange | positioned so that the direction of the front collision load which acts through the front pillar FP from the said apron upper member 1 may be followed.

  Now, as indicated by the arrow in FIG. 2, when a frontal collision load is input to the automobile, this load is transmitted from the apron upper member 1 to the front pillar FP. Due to this load, the front pillar FP is slightly rotated and displaced toward the cabin around the hinge pin 11 of the door hinge 8, and the pillar stiffener 4 of the front pillar FP comes into contact with the free end of the load transmitting member 20, and this front collision load is It can be transmitted to the front side door FD via the load transmitting member 20 and the door inner stiffener 16, and the front collision load can be substantially prevented from acting on the front pillar FP.

  In this embodiment, the front collision load can be transmitted from the pillar stiffener 4 to the door inner stiffener 16 via the load transmitting member 20 that passes through the pillar inner panel 3. Can improve the transmission efficiency of the collision load from the front side door FD and prevent its deformation while reducing the weight of the front pillar FP, thereby suppressing the deformation of the cabin and opening and closing the front side door FD lightly Can be ensured.

  Further, in particular, the load transmission member 20 is fixed to the door inner stiffener 16 of the front side door FD, and is extended through the pillar inner panel 3 of the front pillar FP. Is housed within the width of the front side door FD, does not interfere with other objects, and does not get in the way. Further, since the front collision load acts on the door inner stiffener 16 from the pillar stiffener 4 via the load transmitting member 20, the front collision load is prevented from directly acting on the outer surfaces of the front pillar FP and the front side door FD. Thus, deformation and damage of the outer surface can be prevented.

  Next, a second embodiment of the present invention will be described with reference to FIG.

  FIG. 4 is a cross-sectional view of the front pillar FP and the front side door FD, which corresponds to FIG. 2 of the first embodiment, and the same reference numerals are given to the same elements as in the first embodiment. .

  The load transmission member 20 of the second embodiment has the same structure as the first embodiment, but the mounting seat 20A of the load transmission member 20 is welded to the rear surface of the pillar stiffener 4 of the front pillar FP. The pipe member 20B is extended rearward toward the front end surface of the front side door 1 and passes through the through hole 6 of the pillar inner panel 3, and the free end has a small gap d and the front side door FD. It faces the front end surface of the door outer panel 14.

  As shown by the arrow in FIG. 4, when a frontal collision load is input to the vehicle, this load is transmitted to the front pillar FP, and the front pillar FP is slightly rotated and displaced toward the cabin around the hinge pin 11 of the door hinge 8. The free end of the load transmission member 20 welded to the pillar stiffener 5 of the pillar FP abuts against the front end surface of the front side door FD, and transmits the front collision load to the front side door FD via the load transmission member 20. It is possible to prevent the front-side collision load from acting on the front pillar FP substantially.

  In the second embodiment, the frontal collision load can be transmitted from the pillar stiffener 4 to the door inner panel 15 through the load transmitting member 20 that passes through the pillar inner panel 3. The transmission efficiency of the collision load from the pillar FP to the front side door FD can be enhanced, and the front pillar FP is prevented from being deformed while reducing the weight, thereby suppressing the deformation of the cabin and the lightness of the front side door FD. Can be opened and closed.

  Further, since the load transmission member 20 is fixed to the pillar stiffener 4 of the front pillar FP and is extended through the pillar inner panel 3 of the front pillar FP, the load transmission member 20 is connected to the front side door. It is stored within the width of the FD and does not interfere with other objects and does not get in the way.

  As mentioned above, although the Example of this invention was described, this invention is not limited to the Example, A various Example is possible within the scope of the present invention.

  For example, in the above-described embodiment, the load transmission member is configured by welding a mounting seat to the base end of a straight pipe member. However, the load transmission member may be configured by another effective material such as a solid rod-shaped member. Good.

1 is a side view of an automobile having a vehicle body side structure according to a first embodiment. FIG. 1 is an enlarged cross-sectional view taken along line 2-2 in FIG. Partial perspective view of arrow 3 in FIG. Cross-sectional view of front pillar and front side door according to second embodiment (corresponding to FIG. 2) Cross-sectional view of a conventional front pillar and front side door

Explanation of symbols

3 .... Pillar panel (pillar inner panel)
4 ... Pilast stiffener 6 ... ... Through hole 8 ... Door hinge 16 ... Door stiffener 20 ...・ ・ ・ ・ ・ ・ Load transmission member FP ・ ・ ・ ・ ・ ・ ・ ・ ・ Front pillar FD ・ ・ ・ ・ ・ ・ ・ ・ ・ Front side door

Claims (2)

The front side door (FD) is provided on the front pillar (FP) provided on the side of the vehicle body through the door hinge (8) so that the front side door (FD) can be opened and closed, and the front collision load is applied to the front side door (FD) through the front pillar (FP). In the vehicle body side structure that is transmitted,
The front pillar (FP) is provided with a pillar stiffener (4) for reinforcing the front pillar (FP), and the front side door (FD) is provided with a door stiffener (16) for reinforcing the front side door (FD). Between the pillar stiffener (4) and the door stiffener (16), the through hole (6) opened in the pillar panel (3) of the front pillar (FP) is passed through the pillar stiffener (4) to the door stiffener (16). A vehicle body side structure, comprising a load transmission member (20) for transmitting a front impact load. The front side door (FD) is provided on the front pillar (FP) provided on the side of the vehicle body through the door hinge (8) so that the front side door (FD) can be opened and closed, and the front collision load is applied to the front side door (FD) through the front pillar (FP). In the vehicle body side structure that is transmitted,
The front pillar (FP) is provided with a pillar stiffener (4) for reinforcing the front pillar (FP), and a load transmission member (20) fixed to the pillar stiffener (4) is attached to the pillar panel of the front pillar (FP). A vehicle body side structure for a vehicle, characterized in that it is made to face the front end surface of the front side door (FD) through a through hole (6) opened in (3).

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