JPH0332989A - Body side energy absorbing structure - Google Patents

Abstract

PURPOSE:To improve passenger's safety largely by forming an energy absorbing part which absorbs impact in case of side crush of a vehicle at a jointed part between a cross member which connects a front tunnel to a side sill, and the floor tunnel. CONSTITUTION:A cross member 3 connects a floor tunnel 1 where a seat 6 is disposed and a side sill 2, which forms the floor structure 5 of a vehicle body 4, whereas an energy absorbing part 7 to absorb impact in case of side crush of a vehicle is disposed at a jointed part between the cross member 3 located in the front lower part of the seat 6 and the front tunnel 1. The energy absorbing part 7 is formed by cutting obliquely the internal end part 3a of the cross member 3 corresponding to the floor tunnel 1 to obtain a V-shaped clearance 7a to the front tunnel 1. It is thus possible to lower the stiffness locally in vehicle width direction in the floor structure 5, so as to provide cushioning performance.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an energy absorption structure on the side of a vehicle body in a vehicle such as an automobile, and more specifically, the present invention relates to an energy absorption structure on the side of a vehicle body in a vehicle such as an automobile. This relates to the energy absorption structure of the section.

[Conventional technology]

BACKGROUND ART Conventionally, in vehicles such as automobiles, the impact in the event of a side collision is mainly supported by the rigidity of the door and pillar. Therefore, when the impact is severe, the side sills may be rolled inward, causing the door to enter the vehicle interior and deforming the seat. For this reason, for example, in Japanese Utility Model Application Publication No. 58-149259, a bead is formed that extends inward in the vehicle width direction from the side end of the floor panel to prevent the side sill from deforming as described above in the event of a side collision. Additionally, a vehicle body structure of a floor side portion is described in which the side end portion of the bead and the side sill are connected by a connecting member.

[Problems to be Solved by the Invention] By the way, in the conventional vehicle body structure as described above, by improving the rigidity of the side part of the floor, deformation of the side sill in the event of a side collision is prevented, and the intrusion of the door into the passenger compartment is prevented. Although it is possible to prevent the shock from occurring, it is not possible to absorb the shock itself. In order to more safely protect occupants in the event of a side collision, it is desirable that the floor side portions have high rigidity and the vehicle body structure is capable of absorbing impact. This is because by absorbing the impact, damage to occupants due to secondary collisions and the like can be reduced.

The present invention has been made in consideration of these circumstances, and an object of the present invention is to provide an energy absorbing structure on the side of a vehicle body that can absorb the impact caused by a side collision.

[Means to solve the problem]

The present invention provides a vehicle body structure in which a floor tunnel and a side sill are connected by a cross member, and in order to solve the above problem, an energy absorbing portion that absorbs a load in the vehicle width direction at the time of a side collision is provided in the floor tunnel portion. It is formed at the joint between the and cross member.

[For production]

The impact in the vehicle width direction that acts on the vehicle body in the event of a side collision is absorbed by the energy absorbing section formed at the joint between the floor tunnel section and the cross member, thereby preventing the side sill from being deformed such as being rolled inward. The door is prevented from entering the vehicle interior, and the occupants are safely protected.

[Effects of the Invention] In the energy absorption structure for the side part of the vehicle body of the present invention, an energy absorption part that absorbs the load in the vehicle width direction at the time of a side collision is formed at the joint part between the floor tunnel part and the cross member. Therefore, the impact of a side collision can be absorbed and the occupants can be safely protected.

〔Example〕

The present invention will be described in detail below based on examples thereof.

The energy absorption structure of the side part of the vehicle body shown in this embodiment is adopted in the floor structure 5 of the vehicle body 4 in which the floor tunnel 1 and the side sill 2 are connected by a cross member 3, as shown in FIG. To effectively absorb shock,
This makes it possible to more safely protect the occupant seated on the seat 6 provided between the floor tunnel 1 and the side sill 2. That is, the energy absorbing part 7 that absorbs the impact in the vehicle width direction in the event of a side collision is connected to the cross member 3 disposed below the front of the seat 6 and the floor tunnel 1.
It is formed at the joint with the

As shown in FIG. 1, the energy absorbing part 7 has a shape in which the inner end 3a of the cross member 3 corresponding to the floor tunnel l is cut out diagonally, and the space between it and the floor tunnel l is shaped like a letter . A gap 7a is formed. By providing such a gap 7a, the rigidity of the floor structure 5 in the vehicle width direction is locally reduced, the floor tunnel 1 is made easier to deform, and the impact received by the vehicle body 4 in the event of a side collision is effectively absorbed. It can be relaxed.

On the other hand, the outer end 3b of the cross member 3, which forms a closed cross section with the floor panel 10, is highly rigidly joined to the side sill 2 via a reinforcing bracket 8, so that the side sill 2 is rolled inward in the event of a side collision. This prevents the door 9 from entering the vehicle compartment by preventing any deformation. As shown in FIG. 4, this reinforcing bracket 8 is formed in a substantially triangular shape, and a joining flange 8a protruding from the outer periphery is welded and joined astride the side sill inner 2a and the floor panel 10. is joined to the floor panel 10 at a position reinforced by a front frame 11 disposed in the longitudinal direction of the vehicle body.

Then, approximately at the center of the slope of the reinforcing bracket 8,
It is welded and joined so as to cover the outer end 3b of the cross member 3. Therefore, the side part of the floor has a strong double structure with high rigidity and strength, and in the event of a side collision,
This effectively prevents the side sill 2 from being deformed by being rolled inward.

The seat 6 provided between the floor tunnel l and the side sill 2 is connected to a pair of guide rails 1 as shown in FIG.
The position can be adjusted forward and backward by straddling 3.14,
The front portions of the guide rails 13 and 14 are fixedly supported on the upper surface of the cross member 3. On the other hand, guide rail 1
3.The rear part of the 14 is attached to the side sill 2 as shown in Figure 3.
Seat bracket 1 installed astride the and floor tunnel L
5, and the upper surface of a seat bracket 16 installed across the floor tunnel 1 and the floor panel 10, respectively. The seat bracket 15 provided on the side of the floor is formed to have a three-dimensional shape with high rigidity as shown in FIG.
a is welded and joined across the side sill 2 and the floor panel 10 (see FIG. 3), effectively reinforcing the rigidity and strength of the floor side portion at the rear of the seat 6.

Therefore, the reinforcement bracket 8 and the seat bracket 15 reinforce the rigidity and strength of the floor side portion between the front and back of the seat 6, and as will be described later, the impact mitigation effect of the energy absorbing portion 7 in the event of a side collision. Coupled with this, it is possible to prevent the side sill 2 from rolling inward and prevent the door 9 from entering the vehicle interior. On the other hand, the seat bracket 16 provided inside the guide rail 14
In order to stably support the cross member 3, the flat plate is bent into a trapezoidal shape, and the attachment part to the floor tunnel 1 is bent into a substantially ■ shape to form a gap 16a (see Fig. 3), and the cross member 3. Similarly to the inner end portion 3a (see Fig. 1), the inner end portion 3a is designed to easily absorb shocks in the vehicle width direction.

As shown in FIG. 6, inside the door 9, there is provided a buffer member 22 which is biased upward by a spring 21 supported on the back side of the door inner panel 9a and is movable up and down. In addition, when necessary, it can be pushed down to the position indicated by the dash-dot line and used as an armrest. ing.

With the vehicle body structure configured as described above, in the event of a side collision, as shown in FIG. The floor panel 10 is pushed to the center side together with the sheet 6 without deforming the floor panel 10, and the V-shaped gap 7a of the energy absorbing part 7 becomes
(See FIG. 3) and the floor tunnel 1 is crushed, thereby mitigating and absorbing the impact. On the other hand, the impact from the door 9 itself is relaxed through the buffer member 22 and acts on the occupant seated on the seat 6.

Therefore, since the occupant moves laterally and the impact received is buffered, the occupant is safely protected from damage caused by a secondary collision within the vehicle interior.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a sectional view of the main part of the floor structure, and FIG. 2 is a sectional view of the floor structure in the front of the seat.
Figure 3 is a cross-sectional view of the floor structure behind the seat, Figure 4 is a perspective view of the vehicle body structure on the side of the floor, Figure 5 is a perspective view of the Ziedprakent, and Figure 6 is the door to which the buffer member is attached. FIG. 7 is a perspective sectional view of the floor structure showing a deformed state in a side collision, and FIG. 8 is a plan view of the floor structure. 1-Floor tunnel, 2-Side sill, 3-Cross member 7-Energy absorption part.

Claims (1)

[Claims] (1) In a vehicle body structure in which the floor tunnel and side sills are connected by a cross member, an energy absorbing section that absorbs the load in the vehicle width direction in the event of a side collision is installed.
An energy absorption structure on the side of a vehicle body, characterized in that it is formed at the joint between the floor tunnel and the cross member.