JPH062865Y2 - Body structure of the front of the car - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a vehicle body structure of a front part of an automobile, and more particularly to a structure of a portion connecting a rocker and both ends of a dash panel partitioning a front part of a vehicle compartment.

[Prior Art] FIG. 4 and FIG. 5 show the above-mentioned conventional connecting portion.
The lower portion of the dash panel 3 is inclined rearward, and the lower end of the inclined surface 31 is joined to the front edge of the floor panel 4. The torque box panel 5 having an L-shaped cross section is joined to the front surface of the dash panel inclined surface 31, and the inclined surface 31 and the inclined box 31 form a closed triangular cross section. On the vehicle center side of the torque box panel 5, the front side member 2, the tokule box panel 5, and the inclined surface 31 are integrally welded. Both ends of the dash panel 3 are welded to the front pillar 6 and the front end portion of the rocker 1 coupled thereto.

In this way, the front and rear ends of the vehicle are connected to the front side member 2 and the rocker 1 with a closed cross-section to enhance the joint rigidity, but this portion is stronger from the viewpoint of body shake, steering stability, etc. Coupling rigidity is desired, and as a result, reinforcement panels have been added to take measures to improve the rigidity (No. 60-176976, No. 61-76).
72476).

[Problems to be Solved by the Present Invention] The present invention has been made in view of the above circumstances, and improves the rigidity of the joint portion between the dash panel and the rocker and the front pillar without adding a special reinforcing member. That is the purpose.

[Means for Solving Problems] In the present invention, as shown in FIGS. 1 to 3, the dash panel 3 is divided into a dash upper panel 3A and a dash lower panel 3B joined to the lower end thereof to form an inclined surface. Then, a torque box panel 5 having an L-shaped cross section is provided on the front surface of the dash lower panel 3B to form a closed cross section structure. Both ends of the dash lower panel 3B are curved and extended rearward, and the extended ends are connected to the rocker 3 and the front pillar. The locker 3 is connected at the rear position of the connection portion of 6.

The dash lower panel 3B is made thicker than the dash upper panel 3A, and the extending end of the dash lower panel 3B is sandwiched between the rocker outer panel 11 and the rocker inner panel 12 to be integrally connected.

[Effects] By extending the closed cross-section structure formed by the dash lower panel 3B and the torque box panel 5 to the rear of the joint between the rocker 1 and the front pillar 6, and connecting the whole joint with the above-mentioned closed cross-section, The joint rigidity of the lower part of the front pillar 6 is greatly improved.

Moreover, of the dash panel 3, only the lower panel 3B is thickened, the extending end of the lower panel 3B is arranged between the rocker outer panel 11 and the rocker inner panel 12, and the three members are integrally coupled, so that a special reinforcing member is provided. The joint rigidity is further improved without adding a weight and without significantly increasing the weight.

[Embodiment] FIGS. 1 to 3 show an embodiment of the present invention.

The dash panel 3 is composed of a dash upper panel 3A which is a substantially vertical surface and a dash lower panel 3B which is thicker than the dash upper panel 3A and whose upper edge is welded to the lower end of the panel 3A and which is inclined rearward of the vehicle.

A torque box panel 5 having an L-shaped cross section is provided on the front surface of both ends of the dash lower panel 3B.
5 forms a triangular closed cross section. The front side member 2, the torque box panel 5, and the dash lower panel 3B are integrally welded to each other at an edge of the torque box panel 5 on the vehicle center side. The upper edge of the torque box panel 5 is the lower edge of the dash upper panel 3A,
The rear edge is welded to the front edge of the floor panel 4 integrally with the rear edge of the dash lower panel 3B.

Meanwhile, the rocker outer panel 11 and the rocker inner panel 1
A lower end of a front pillar 6 having a closed cross section including a pillar outer panel 61 and a pillar inner panel 62 is welded to the rocker 1 at a front end portion of the rocker 1 having a closed cross section with 2 and 2.

The end portion of the dash lower panel 3B is gently curved rearward and extends to the rear of the connecting portion of the front pillar 6 and the rocker 1.

The rocker inner panel 12 does not reach the tip of the rocker outer panel 11, and is cut at a position slightly forward of the rear edge of the dash lower panel 3B.
The extended end rocker inner panel 12 of B is incorporated into the rocker 1 from the front end front side. The end 31 of the dash lower panel 3B is welded to the upper flange 111 of the rocker outer panel 11 with the pillar inner panel 62 interposed therebetween, and the extending end 32 together with the pillar inner panel 62 is the upper flange 111 of the rocker outer panel 11 and the rocker inner panel 12. , 121 and are welded together. The lower edge of the pillar inner panel 62 is sandwiched between the lower flange 112 of the rocker outer panel 11 and the edge of the torque box panel 5 and welded integrally with them, and the rear edge of the lower edge is the rocker outer panel 11 and the rocker outer panel 11. It is sandwiched between the lower flanges 112 and 122 of the inner panel 12 and welded integrally with them. The side edges of the floor panel 4 are welded to the rocker inner panel 12.

However, according to the above structure, the closed cross-section structure formed by the dash lower panel 3B and the torque box panel 5 having the increased plate thickness extends to the rear of the connecting portion between the front pillar 6 and the rocker 1 and the dash is formed at the extending portion. Since the lower panel 3B is integrally connected to the outer panel 11 and the inner panel 12 of the rocker 1 together with them, the joint rigidity is improved, and particularly the rigidity of the front pillar 6 against bending in the front-rear direction is greatly enhanced. Further, since the dash panel 3 is divided into upper and lower parts and only the lower part is thickened, it is possible to avoid a significant increase in weight and to effectively improve the joint rigidity without providing a special reinforcing member. Further, this structure can be welded in the conventional assembling process, and the productivity will not be hindered.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a perspective view showing a coupling structure, and FIG. 2 is II-II of FIG.
A sectional view taken along the line, FIG. 3 is a plan view taken along the line III-III in FIG. 1, and FIGS. 4 and 5 show a conventional structure.
The drawing is a perspective view, and FIG. 5 is a sectional view taken along line VV of FIG. 1 …… Rocker 11 …… Rocker outer panel 12 …… Rocker inner panel 2 …… Front side member 3 …… Dash panel 3A …… Dash upper panel 3B …… Dash lower panel 4 …… Floor panel 5 …… Torque box panel 6 ... … Front pillar

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A vehicle body structure for a front part of an automobile, comprising: a front part of a vehicle compartment; a lower end of a dash panel forming a closed cross section with a torque box panel; Is composed of a dash upper panel that forms a substantially vertical surface and a dash lower panel that is inclined toward the vehicle compartment and has a larger plate thickness than the dash upper panel, and the dash lower panel and the torque box panel welded to the front surface of the dash lower panel have a closed cross section. The rear end of the dash lower panel is curved while extending at both ends, and the extended end is sandwiched between the rocker inner panel and the rocker outer panel at the rear position of the joint between the front pillar and the rocker panel. The body structure of the front part of the automobile welded together with these two panels.