JPS647111Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a lower body structure of an automobile.

(Prior art) Conventionally, at the lower end of the hinge pillar located in front of the door opening of an automobile, the front end of the side sill is extended forward of the hinge pillar, and this extended part and the front side frame are connected by a darts lower panel. For example, the one made in 1987-
This method is known as disclosed in Japanese Patent No. 63785.

(Problem to be Solved by the Invention) However, in such a known example, when a load is applied from the front side frame, the dart lower panel is loaded in the backward direction, so the dart lower panel and the side sill extension are The heaviest load is applied to the abutting portion, and this abutting portion deforms, resulting in insufficient distribution of the load to the side sill. Therefore, there is a problem in that the interior of the vehicle is deformed in the event of a vehicle collision, making it impossible to ensure driving safety.

(Means for Solving the Problems) In order to solve these problems, the present invention connects the front side frame and the side sill at a torque box in the width direction of the vehicle body, and connects the front side frame and the side sill at the intersection of the side sill, the torque box, and the hinge pillar. By providing a gusset at the front end of the inner panel of the side sill that bulges toward the passenger compartment, the load from the front side frame is efficiently dispersed from the torque box to the side sill at the gusset, and the hinge pillar is prevented from collapsing toward the passenger compartment. This is intended to be able to be prevented by the gusset portion.

That is, the lower body structure of an automobile according to the present invention includes: a front side frame extending in the longitudinal direction of the vehicle body; a wall member disposed in the width direction of the vehicle body to partition the interior and exterior of the vehicle interior and extending upward; a side sill disposed outside the side frame in the vehicle width direction, extending in the longitudinal direction of the vehicle body, and having a front end joined to the indoor side of the wall member; and a side sill oriented in the vehicle width direction and joined to the outdoor side of the wall member. a torque box connected to the front side frame and the front end of the inner panel of the side sill via the wall member, and extending upward from the front end of the side sill;
A hinge pillar to which a front door is attached is provided, and a gusset portion protruding toward the vehicle interior is provided at the front end of the inner panel of the side sill at the intersection of the side sill, the torque box, and the hinge pillar.

(Function) In the above lower vehicle body structure, the load from the front side frame is distributed from the torque box to the side sill at the gusset, and even when a load is applied to the hinge pillar in a direction that causes it to fall toward the passenger compartment, this load is The torque is distributed to the torque box at the gusset.

(Example) Examples of the present invention will be described below with reference to the drawings.

Figure 1 shows the lower structure of the vehicle body around the hinge pillar to which the front door is attached.

The hinge pillar 1 is located in front of the door opening 2, and is provided with a hinge attachment part 3 at the bottom thereof to which a front door (not shown) is attached.

The cowl side panel 4 extends forward from the hinge pillar 1.

The side sill 5 intersects with the lower end of the hinge pillar 1 and extends to the front end of the cowl side panel 4.

Hinge pillar outer 1a and side sill outer 5
The hinge pillar inner member 1b is formed by raising the front portion of the side sill reinforcing plate 5b upward.

A flange portion 1c formed on the rear side of the hinge pillar outer 1a is joined to the hinge pillar inner 1b, and a flange portion 1d formed on the front side of the hinge pillar inner 1b is joined to the hinge pillar outer 1a.

The front end portion of the side sill inner 5c is butted against and joined to the indoor side of a darts lower panel 6, which is a wall member that is arranged in the width direction of the vehicle body, partitions the engine room and the passenger compartment, and extends upward. . The side end 6a of the dart lower panel 6 is joined to the front end of the side sill reinforcing plate 5b together with the front end 4a of the cowl side panel 4, and the lower end 6b is joined to the front end of the floor panel 7. Further, a torque box 8 oriented in the width direction of the vehicle body is joined to the lower front side of the dart lower panel 6, that is, to the side of the engine room. Reference numeral 9 denotes a front side frame extending in the longitudinal direction of the vehicle body. In this case, the torque box 8 is connected to a front side frame 9, and the inner 5c of the side sill 5 extends in the vehicle longitudinal direction outside the front side frame 9 in the vehicle width direction.
is connected to the above-mentioned darts lower panel 6.

In the above configuration, the front end portion of the side sill inner 5c is formed into a gusset portion 10 that bulges toward the interior side. Referring to FIGS. 2 and 3 together, the gusset section 10 consists of a triangular first gusset section A and a second gusset section B, with first sides 11a and 12a of both gusset sections A and B. It is formed into a substantially rhombic shape with the abutting portions protruding toward the indoor side. Further, the second side 11b of the first gusset portion A is joined to the dart lower panel 6, and the third side 11c coincides with the corner edge 13a of the side sill inner 5c. The second side 12b of the second gusset portion B is joined to the floor panel 7, and the third side 12c forms a boundary in the inclined direction with the rising surface portion 13b of the side sill inner 5c. Note that this gusset portion 10 may be formed separately from the side sill inner 5c and may be joined to the front end portion of the side sill inner 5c.

By forming the gusset portion 10 at the front end of the side sill 5c in this way, it is possible to prevent the torque box 8 from falling backward and the hinge pillar 1 from falling toward the interior of the vehicle. If the gusset portion 10 were not formed at the front end of the side sill inner 5c, the front side frame 9 would move backwards due to the impact load at the time of a vehicle collision, and the torque applied to the front side frame 9 due to this backward movement would be reduced. The box 8 is bent so as to rotate rearward about the joint with the side sill inner 5c as a fulcrum. As a result,
The impact load is hardly dispersed in the side sill 5, and the impact load cannot be sufficiently absorbed. However, if a gusset portion 10 that bulges toward the passenger compartment is formed at the front end of the side sill inner 5c, the load that attempts to move the torque box 8 backward is
The interaction between the gusset part A and the second gusset part B ensures that it is received. As a result, the impact load is also distributed to the side sills 5, so that external impact can be sufficiently absorbed, resulting in a stronger structure. On the other hand, when the front side frame 9 is curved, when the front side frame 9 retreats and the torque box 8 retreats, a force acts on the side sill 5 to curve it toward the outside of the vehicle interior. As a result, a force is applied to the hinge pillar 1 that tends to cause it to fall toward the interior of the vehicle, but this load applied to the hinge pillar 1 is reliably received by the interaction between the first gusset part A and the second gusset part B, and the hinge pillar 1 This prevents the vehicle from falling or bending toward the interior of the vehicle.

(Effects of the invention) Therefore, according to the invention, a gusset part that bulges toward the passenger compartment is provided at the front end of the inner panel of the side sill at the intersection of the side sill, torque box, and hinge pillar, so that the gusset part that bulges toward the passenger compartment can be easily moved from the front side frame to the side sill. and the load from the hinge pillar to the torque box.
This increases the rigidity around the hinge pillar, making it possible to prevent deformation of the passenger compartment in the event of a vehicle collision.

[Brief explanation of drawings]

The drawings illustrate an embodiment of the present invention, and FIG. 1 is a perspective view of a joint structure of a hinge pillar, a side sill, and a torque box, and FIGS. 2 and 3 are a plan view and a front view of FIG. 1. 1... Hinge pillar, 2... Door opening, 4...
...Cowl side panel, 5...Side sill, 6...
... Datsushi lower panel, 7 ... Floor panel, 8
...Torque box, 9...Front side frame, 10...Gusset section.

Claims (1)

[Scope of claim for utility model registration] A front side frame extending in the longitudinal direction of the vehicle body, a wall member disposed in the width direction of the vehicle body that partitions the interior and exterior of the vehicle interior and extending upward, and a wall member extending upward from the front side frame. a side sill disposed on the outside in the width direction, extending in the longitudinal direction of the vehicle body, and having a front end joined to the indoor side of the wall member; a torque box connected to a frame and a front end of an inner panel of the side sill via the wall member; a torque box extending upward from the front end of the side sill;
A lower body of an automobile, comprising a hinge pillar to which a front door is attached, and a gusset portion protruding toward the passenger compartment is provided at the front end of the inner panel of the side sill at the intersection of the side sill, the torque box, and the hinge pillar. structure.