JPH06227437A - Side part car body structure of automobile - Google Patents

Abstract

PURPOSE:To prevent the intrusion of a door into an automobile room in collision, as for a structure in which a cross member is supported through a cabin mount for a chassis frame, and both the edges of a floor plate installed on the cross member are connected with a side shill, and the lower edge of the door is positioned outside the side shill. CONSTITUTION:A side shill 9 is installed under a chassis frame 1. Then, a floor plate 7 is bnnt downward, and a stage part 25 is formed by the side shill 9. The stage part 25 is opposed to the lower part of a door 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body structure, and more particularly to a structure of a portion of a vehicle body where a side door is provided.

[0002]

2. Description of the Related Art In recent years, a large number of off-road vehicles have been developed and commercialized, and a body body having the characteristics of a monocoque structure used in passenger cars has been developed as a body adopted in trucks. There is a structure supported by a chassis frame.

FIG. 7 shows a cross-sectional structure near the door of such an off-road car. In this figure, a cross member 5 is supported on a chassis frame 1 via a cabin mount 3 having elasticity. Cross member 5
A floor plate 7 is provided on the upper side, and both ends of the floor plate 7 are connected to side sills 9. The lower end 11A of the door 11 is located outside the side sill 9.

[0004]

However, the door 1
Although the lower end 11A of No. 1 is positioned so as to overlap the outside of the side sill 9, the lower end 11A is not set to have a great strength, and in the event of a side collision, the side 11 is overcome and the door 11 enters the vehicle interior. There was a possibility.

The present invention has been made to solve the above problems, and provides a side vehicle body structure of an automobile capable of reducing the amount of entry of the door into the vehicle interior during a side collision. With the goal.

[0006]

According to a first aspect of the present invention, a cross member is supported by a chassis frame via a cabin mount, and both ends of a floor plate provided on the cross member are connected to side sills. In the side part vehicle body structure of the vehicle in which the lower end of the door is located outside of, the side sill is provided below the floor plate, and both ends of the floor plate are bent downward to form a stepped portion with the side sill. It is characterized in that the lower part of the door faces this step.

The invention of claim 2 is further characterized in that a step is provided on the upper surface of the side sill.

The invention of claim 3 is further characterized in that the step disposed on the upper surface of the side sill extends to the upper surface of the floor plate.

The invention according to claim 4 is characterized in that the side frame constituting the outside of the chassis frame is arranged laterally on the inner side surface of the side sill.

[0010]

In the event of a side collision, the lower portion of the door is received by the stepped portion, and as a whole, the amount of intrusion of the door into the vehicle interior can be reduced.

Further, by disposing the step on the upper surface of the side sill, the strength of the vehicle body against a side collision can be reinforced by the step, and at the time of getting on and off, the occupant can put his / her foot on the step once, so that the getting on / off action is It will be easy.

Further, since the extended step covers not only the upper surface of the side sill but also the space between the side sill and the floor plate, the reinforcing effect can be further secured.

Further, by arranging the side frame on the side of the side sill, a cabin mount can be provided on the side frame to support the cross member and the floor plate, so that the strength of the side portion of the vehicle body can be further improved. it can.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view showing a state in which a side door of the off-road car according to the present embodiment is opened.
A sectional view taken along line II is shown in FIG. 2, and a sectional view taken along line III-III is shown in FIG. The chassis frame 1 has a closed cross-section structure in which a main frame 13 having a U-shaped cross section and a side frame 15 having a U-shaped cross section are connected to face each other. A mount bracket 17 (FIG. 4) is welded to the outer surface of the side frame 15, and the cabin mount 3 is mounted thereon. As is well known, the cabin mount 3 is formed by sandwiching an elastic member 17 made of rubber and having a short cylindrical shape from above and below with a plate member 19 and fixing a bolt 21 at the center. The lower end of the bolt 21 is fixed to the mount bracket 17, and the upper end is fixed to another mount bracket 23. The latter mount bracket 23 is welded to the lower side of the cross member 5.

While the chassis frame 1 is provided in the front-rear direction of the vehicle body, the cross members 5 are provided in the left-right direction of the vehicle body and a plurality of them support the lower surface of the floor plate 7. A mat 8 is laid on the upper surface of the floor plate 7. The cross-section of the cross member 5 has a U-shape facing upward over the entire length, and the tip of the U-shape is further bent horizontally and connected to the lower surface of the floor plate 7. Near both ends 5A, 7A of the cross member 5 and the floor plate 7
Is bent obliquely downward and is connected to the inner surface of the side sill 9. As a result, the upper surfaces of the floor plate 7 and the side sill 9 are not substantially flush with each other as in the conventional case (FIG. 7), but the step 25 is formed. The side sill 9 has a lower vertical position than the chassis frame 1, and therefore the step portion 25 is large. The side sill 9 has a sill inner panel 27 and a sill outer panel 29 joined together to form a closed cross section.

In the step portion 25, a step 31 is provided so as to straddle the upper surfaces of the mat 8 and the side sill 9. A grip 33 is provided so as to project from the back side of the step 31, and the grip 33 is press fitted into a hole 35 (see FIG. 5) formed in the upper surface of the side sill 9 and the upper surface of the bent portion of the floor plate 7. Also, a flange 37 for fitting the sill inner panel 27 and the sill outer panel 29 together.
Exists on the upper surface of the side sill 9, but this flange 3
7 is formed with a concave portion 39 that is fitted to the step 31.
The positioning of the.

The garnish 4 covering the lower surface of the side sill 9
1 is another flange 4 existing on the outer surface of the side sill 9.
It is attached so as to be hooked on 3.

A weather strip 45 is provided at an upper outer corner of the side sill 9 so as to be in air-tight contact with the lower end 11A of the door 11. The lower portion 11B of the door 11 faces the step 25. A sufficient space 47 exists between the door 11 and the bent portion 7B of the floor plate 7, and by utilizing this space 47,
The door 11 is provided with a pocket 51 formed by a door trim 49.

Since both ends of the floor plate 7 and the cross member 5 are connected to the lower side of the inner side surface of the side sill 9, a space 53 remains above the inner side surface, and the harness 55 is passed through the space 53. There is.

In FIG. 1, the front side of the side sill 9 is continuous with the A pillar 57, and the rear side is continuous with the B pillar 59. A cross section of the B pillar 59 is shown in FIG. 3, those parts which are the same as those corresponding parts in FIG. 2 are designated by the same reference numerals. There are two types of upper and lower cross members, and the upper cross member 61 is for supporting the mat 8 at a predetermined height and has a linear shape. This is straight because this cross section is not a cross section near the door 11, and it is not necessary to provide the step portion 25 for achieving the effect of the present embodiment. B above the cross member 61
A pillar trim 63 is provided inside the pillar 59, and a seat belt 65 is attached to the pillar trim 63.

Next, the side sill 9 and the A continuous with it
A state in which the pillar 57, the B pillar 59, and the floor plate 7 are disassembled is shown in a perspective view of FIG. The A pillar 57 and the B pillar 59, which are continuously joined upward to the side sill 9 provided in the vehicle body front-rear direction, are configured by inner panels 57A, 59A and outer panels 57B, 59B, respectively, and the respective flange portions 67, 69 are Welded to form a closed cross section. In addition, the outer panel 57B,
The lower end of 59B is joined to the sill outer panel 29, and the lower ends of the inner panels 57A and 59A are extended within the closed cross section formed by the sill inner panel 27 and the sill outer panel 29 (not shown). 57A, 27,
The flanges of 29 or 59A, 27, 29 are overlapped and welded.

Further, as shown in FIG. 6B, the side sill 9
A gusset 71 having the same shape as that of the closed cross section is arranged inside the closed cross section, and a flange portion 73 around the gusset 71 is welded to the inner surface of the side sill 9. In this way, the strength of the side sill 9 is improved. The cab side including the side sill 9 and the A pillar 57 and the B pillar 59 is attached to the side surface of the floor plate 7. As described above, the floor plate 7 has the stepped portion 25 near the door 11.

The operation of this embodiment will be described below.
As shown in FIG. 2, the door 11 is placed at a position facing the step 25.
Since the lower portion 11B of the door 11 comes in, the two overlap in the left-right direction in the range of h in the figure, and at the time of a side collision, the lower end 11 of the door 11 is temporarily assumed.
Even if A crosses over the side sill 9, the lower portion 11B of the door 11 is received within the range of h by the floor plate 7 and the cross member 5 having the large strength that constitute the step 25, so that the entire door 11 is covered by the vehicle. It is possible to prevent a large intrusion into the room. Therefore, the safety at the time of a side collision can be improved.

Since the step 31 extends not only on the upper surface of the side sill 9 but also over the bent portion 7B of the floor plate 7, the reinforcing effect around the side sill 9 can be secured. Further, it is possible to prevent the mud attached to the shoes of the occupant from entering between the side sill 9 and the floor plate 7. Further, by disposing the step 31 on the upper surface of the side sill 9, the strength of the vehicle body against a side collision can be reinforced by the step 31, and the occupant can step on the step 31 between the ground and the floor plate 7 to get on and off the vehicle. Since the operation can be performed, the boarding / alighting operation can be easily performed even in an off-road car having a high vehicle height.

Further, as shown in FIG. 2, the cabin mount 3 is provided on the side frame 15 constituting the outside of the chassis frame 1 at the position where the step 25 is formed, whereby the cross member 5 and the floor plate 7 are provided. Since it is supported, the strength of the step 25 is improved.

[0026]

As described above, according to the side body structure of an automobile of the present invention, the lower portion of the door is received by the step portion of the floor plate at the time of a side collision, and the door largely enters the vehicle interior. It is possible to prevent it from happening and to improve safety.

According to the second aspect of the present invention, by disposing the step on the upper surface of the side sill, the strength of the vehicle body against a side collision can be reinforced by the step, and at the time of getting on and off, the occupant can step the foot once. Can be placed on
Getting on and off becomes easy.

Further, according to the invention of claim 3, the extended step covers not only the upper surface of the side sill but also the space between the side sill and the floor plate, so that the reinforcing effect can be further secured.

Further, according to the invention of claim 4, since the cabin mount is provided on the side frame of the chassis frame near the step portion and the cross member and the floor plate can be supported, the strength of the step portion for getting on and off is sufficient. Can be increased to

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is an exploded perspective view showing a main part of FIG.

FIG. 5 is an exploded view of a part of FIG.

FIG. 6A is a perspective view showing the main part of FIG. 5 in an exploded manner;
(B) is a perspective view showing the main part of (A) in an exploded manner.

FIG. 7 is a sectional view corresponding to FIG. 2, showing a conventional example.

[Explanation of symbols]

 1 Chassis Frame 3 Cabin Mount 5 Cross Member 7 Floor Panel 8 Mat 9 Side Sill 11 Door 13 Main Frame 15 Side Frame 17 Mount Bracket 23 Mount Bracket 27 Sill Inner Panel 29 Sill Outer Panel 31 Step 41 Garnish 45 Weather Strip 49 Door Trim 51 Pocket 65 Seat Belt 71 gusset

Claims (4)

[Claims] 1. An automobile in which a cross member is supported by a chassis frame via a cabin mount, both ends of a floor plate provided on the cross member are connected to side sills, and a lower end of a door is located outside the side sills. In the side body structure of the above, the side sill is provided below the floor plate, and both ends of the floor plate are bent downward to form a step with the side sill. A side body structure of an automobile, characterized in that they face each other. 2. The side vehicle body structure for an automobile according to claim 1, wherein steps are provided on the upper surface of the side sill. 3. The side vehicle body structure according to claim 2, wherein the step provided on the upper surface of the side sill extends to the upper surface of the floor plate. 4. The side body structure for a vehicle according to claim 1, wherein the side frame forming the outside of the chassis frame is arranged laterally on the inner side surface of the side sill.