JPH0727266Y2 - Lower car body structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a lower vehicle body structure of an automobile, particularly to a structure of a connecting portion between a hinge pillar and a side sill.

(Prior Art) Hinge pillars to which door hinges are attached are generally
The outer panel and the inner panel are joined so as to form a closed cross section that extends in the vertical direction, thereby ensuring rigidity. Further, in the closed cross section of the hinge pillar, as disclosed in, for example, Japanese Utility Model Laid-Open No. 62-23775, a hinge reinforcement for further increasing the door hinge mounting strength is provided. It is designed to be joined to the outer panel.

The lower end of the hinge pillar will be joined to a side sill forming a closed cross section extending in the vehicle body front-rear direction.
In order to increase the bonding strength between the hinge pillar and the side sill, conventionally, as disclosed in the above-mentioned publication, the hinge reinforcement is extended downward to be joined to the side sill at the lower portion of the closed cross section of the side sill. Is proposed.

(Problems to be Solved by the Invention) However, in view of the door supporting function of the hinge pillar, it is required to further increase the joint strength between the hinge pillar and the side sill. Further, when the hinge pillars are joined to the middle portion of the side sill, not to the front and rear ends thereof, the above conventional structure cannot sufficiently secure the joining strength.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a lower body structure of an automobile capable of sufficiently securing the joint strength between the hinge pillar and the side sill.

(Means for Solving the Problems) In the lower body structure for an automobile according to the present invention, the lower end of the hinge pillar is inserted into the closed cross section of the side sill and joined to the lower part thereof to form a node in the closed cross section. In the closed cross section of the hinge pillar, a predetermined node is formed by utilizing the hinge reinforcement so as to achieve the above object. That is, a hinge pillar in which an outer panel and an inner panel are joined so as to form a closed cross section that extends in the vertical direction, and a hinge reinforcement that is provided in the closed cross section of the hinge pillar and is joined to the outer panel of the hinge pillar. And a lower vehicle body structure of an automobile including a side sill provided below the hinge pillar and forming a closed cross section extending in the vehicle front-rear direction, a lower end portion of the hinge pillar is inserted into the closed cross section of the side sill, and Joined to the side sill near the bottom and top of the closed cross section,
The lower end of the hinge reinforcement is bent and extended toward the inner panel of the hinge pillar near the upper portion of the closed cross section of the side sill, and is joined to the inner panel.

(Operation) As shown in the above configuration, since the lower end portion of the hinge pillar formed in a closed cross section is inserted into the closed cross section of the side sill and joined to the side sill near the lower part and the upper part of the closed sill, the side sill is A high-rigidity node is formed in the closed cross section of. Further, the lower end portion of the hinge reinforcement provided in the closed cross section of the hinge pillar and joined to the outer panel thereof is bent and extended toward the inner panel of the hinge pillar near the upper part of the closed cross section of the side sill to the inner panel. Because they are joined,
A node is also formed in the closed cross section of the hinge pillar, and moreover, the continuity in strength in the vehicle longitudinal direction at the upper part of the closed cross section of the side sill is ensured.

(Effect of the Invention) Therefore, according to the present invention, it is possible to sufficiently secure the coupling strength between the hinge pillar and the side sill.

Embodiments Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment of the lower body structure of an automobile according to the present invention, and is a detailed view of a portion I in the side view of the vehicle body shown in FIG. Further, FIG. 2 is II-II of FIG.
FIG. 3 is a sectional view taken along line III-III in FIG. 2.

As shown in FIG. 1, the hinge pillar 2 located at the lower front end of the door opening is formed by joining the outer panel 4 and the inner panel 6 so as to form a closed cross section extending in the vertical direction. On the outer side, a side frame outer 8 provided so as to surround the door opening is arranged and joined to the inner panel 6, thereby forming another vertically extending closed cross section outside the hinge pillar 2. The hinge pillar 2 is improved in strength.

Below the hinge pillar 2, a side sill 10 is provided which forms a closed cross section extending in the vehicle body front-rear direction. The side sill 10 is formed by joining the side frame outer 8 and the side sill inner 12 on the rear side by the hinge pillar 2, and joining the side frame outer 8, the side sill inner 12 and the upper panel 14 on the front side of the hinge pillar 2. It has been done.

Then, as shown in FIGS. 2 and 3, the lower end of the hinge pillar 2 is inserted into the closed cross section of the side sill 10, and its outer panel 4 is joined to the inner surface of the side frame outer 8 at the lower part of the closed cross section. The inner panel 6 is joined to the side frame outer 8 and the side sill inner 12 so as to be sandwiched between them at the lower portion of the closed cross section.

In the closed cross section of the hinge pillar 2, there is provided a hinge reinforcement 16 for ensuring attachment strength to a door hinge (not shown) attached to the outer panel 4 via the side frame outer 8. The hinge reinforcement 16 is joined to the outer panel 4 so as to overlap the door hinge attachment portion of the outer panel 4 which projects outward in the vehicle width direction and contacts the side frame outer 8. Then, the lower end portion of the hinge reinforcement 16 is bent and extended toward the inner panel 6 near the upper portion of the closed cross section of the side sill 10 so that the inner panel 6 can be held by the inner sill 12 and the side sill inner 12. Are joined together.

As shown in FIG. 1, the rear end of the upper panel 14 of the side sill 10 is joined to the inner panel 6 of the hinge pillar 2. Further, holes 18 for attaching door hinges are formed in each member at two positions where the side frame outer 8, the outer panel 4, and the hinge reinforcement 16 overlap. As shown in FIG. 2, nuts 20 for attaching the door hinges are welded to the inner surface of the hinge reinforcement 16 corresponding to the holes 18, respectively.

As described above, in this embodiment, since the lower end portion of the hinge pillar 2 having a closed cross section is inserted into the closed cross section of the side sill 10 and joined to the side sill 10 at the lower part of the closed cross section, Highly rigid knots will be formed within 10 closed sections. Further, the lower end portion of the hinge reinforcement 16 provided in the closed cross section of the hinge pillar 2 and joined to the outer panel 4 of the hinge pillar 2 has a side sill 10.
Since it is bent and extended toward the inner panel 6 of the hinge pillar 2 and joined to the inner panel 6 in the vicinity of the upper portion of the closed cross section of the hinge pillar 2, a node is formed also in the closed cross section of the hinge pillar 2, and the side sill is also formed. The strength continuity in the longitudinal direction of the vehicle body at the upper part of the closed cross section of 10 will be secured. Therefore, according to this embodiment, it is possible to sufficiently secure the bonding strength between the hinge pillar 2 and the side sill 10.

[Brief description of drawings]

FIG. 1 is a detailed perspective view of a portion I of FIG. 4 showing an embodiment of a lower body structure of an automobile according to the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. FIG. 4 is a sectional view taken along the line III-III in FIG. 4, and FIG. 2 ... Hinge pillars, 4 ... Outer panel 6 ... Inner panel, 8 ... Side frame outer 10 ... Side sill, 12 ... Side sill Inner 14 ... Upper panel 16 ... Hinge reinforcement

Claims (1)

[Scope of utility model registration request] 1. A hinge pillar formed by joining an outer panel and an inner panel so as to form a closed cross section extending in the vertical direction, and a hinge provided in the closed cross section of the hinge pillar and joined to the outer panel of the hinge pillar. In a lower vehicle body structure of an automobile, comprising a reinforcement and a side sill provided below the hinge pillar and forming a closed cross section extending in a vehicle front-rear direction, a lower end portion of the hinge pillar is inserted into the closed cross section of the side sill. And is joined to the side sill near the lower and upper portions of the closed cross section, and the lower end of the hinge reinforcement is bent and extended toward the inner panel of the hinge pillar near the upper portion of the closed cross section of the side sill. Of an automobile characterized by being joined to the inner panel Lower body structure.