JPH0352233Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to the lower body structure of an automobile.

[Conventional technology]

Normally, in the lower part of the car body, a tunnel part extending in the front-rear direction is formed in the center of the floor panel, and while this tunnel part plays the role of a constituent member of the floor panel, there are A structure in which front and rear seats are provided is generally adopted.

In addition, in automobiles, various control devices are sometimes placed under the left and right seats due to layout space constraints, and in such cases, cable members such as wire harnesses and control cables connected to various control devices are placed on the floor panel. It will be installed beyond the tunnel section.

[Problem that the invention attempts to solve]

However, there are so-called walk-through type automobiles that allow passengers to move between the front seat side and the rear seat side through a tunnel. When various control devices are disposed under the seat of a vehicle, there is a risk that the cable member located in the tunnel portion may be stepped on by the occupant and be damaged.

In view of these problems, this invention aims to provide a lower vehicle body structure for a walk-through type vehicle that can prevent damage to a cable member that crosses a tunnel.

In addition, in the body structure of automobiles, for example,
As shown in Publication No. 46668, a cross member extending in the vehicle width direction is joined to the floor panel, and the cross member and the floor panel form a closed cross section to improve the rigidity of the vehicle body. something is known.

The inventor of this case conducted extensive research to solve the problem of cable member damage in the tunnel section mentioned above, and focused on the fact that in the structure described in the above-mentioned conventional publication, the cross member is arranged beyond the tunnel section. It was discovered that by using this cross member, it is possible to prevent the cable members located in the tunnel section from being stepped on by passengers.

[Means for solving problems]

Therefore, in the lower body structure of an automobile according to this invention, a cross member extending in the vehicle width direction is provided on a floor panel having a tunnel section in the center, and this cross member is divided into left and right sides at the tunnel section.
The divided end is joined to the vertical wall of the tunnel section, these divided cross members are connected by a cover member, and the side wall part of the divided end of the cross member is connected so that the upper end side is inside the cross member closed cross section than the lower end side. The cable member is disposed along the cross member beyond the tunnel portion, and the cable member located in the tunnel portion is covered with the cover member.

[Effect]

In this invention, since the cable member located in the tunnel part is covered with a cover member, the cable member on the tunnel part is not directly stepped on and damaged even in walk-through type cars, and it is also called a cross member. By arranging the cover members in a straight line, high vehicle body rigidity can be obtained.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 and 2 show a lower body structure of an automobile according to an embodiment of the present invention, in which an engine room 2 is formed in the front part of a car body 1;
An engine 3 is installed inside. Also car body 1
A vehicle compartment 4 is formed on the rear side of the engine compartment 2,
A floor panel 5 is arranged at the lower part of the vehicle compartment 4,
Both side edges of the floor panel 5 are fixed to side sills 6.

A tunnel portion 7 extending in the front-rear direction is protruded from the center of the floor panel 5. A transmission 8 and a propeller shaft 9 are disposed below the tunnel portion 7, and the rear end of the propeller shaft 9 is connected to differential gear 10. Further, left and right front seats 11 are arranged on the floor panel 5 in front and behind it, and a rear seat 12 is arranged in the rear part.

Also, the front seat 11 is placed on the floor panel 5.
A cross member 13 having an inverted U-shaped cross section is provided below the front end and extends in the vehicle width direction. This cross member 13 is divided into left and right parts at the tunnel part 7, and the left and right cross member parts 13a and 13b are divided into left and right parts.
A cover member 15 is fixed to the side sill 6 at one end, to the floor panel 5 at the middle thereof, and at the other end which is a split end to the tunnel part 7 with bolts 16, and the left and right cross member parts 13a, 13
Both other ends of b are connected to each other by the cover member 15.

And the left and right cross member parts 13a, 1
3b is provided with a cable member 17 along this, and the cable member 17d is connected to the vertical wall portion 13c of the cross member portions 13a, 13b by the clip 18.
The cable member 17 is attached to the tunnel part 7 by the bead 7b of the tunnel part 7 along the imaginary extension line between the cross members 13a and 13b, and the cable member 17 located in the tunnel part 7 is attached to the cover member. covered by 15. Here, the cable member 17 is a wire harness,
There are opener cables for filler lids and trunk lids.

Next, the effects will be explained.

In the lower vehicle body structure of this embodiment, the cable member 17 located in the tunnel portion 7 is covered with the cover member 15 constituting the cross member 13, so that the occupant can pass through the tunnel portion 7 to the front seat side 11 and the rear seat side. When moving between the cable member 12 and the cable member 12, the cable member 17 is not damaged by being stepped on or damaged by luggage, and the durability of the cable member 17 can be guaranteed.

Further, in this structure, since the cross member 13 extending in the vehicle width direction is joined to the floor panel 5 to form a closed cross section, the bending rigidity and torsional rigidity of the vehicle body can be improved.

In addition, in this structure, since the cross member 13 is joined to the tunnel part 7 so as to straddle it, the rigidity of the tunnel part 7 can be improved.
It is possible to prevent the panels from resonating, and it is also possible to prevent noise from below the vehicle body from permeating into the vehicle interior through the tunnel portion 7.

Furthermore, since the cross members 13a, 13b and the cover member 15 are arranged substantially linearly, even when torsional force is applied, no unreasonable stress is applied between these members, and therefore the vehicle body It has an advantageous structure in terms of rigidity.

[Effect of idea]

As described above, according to the lower body structure of an automobile according to the present invention, a cross member extending in the vehicle width direction is provided on a floor panel having a tunnel section in the center, and this cross member is divided into left and right sides at the tunnel section. , the split end is joined to the vertical wall of the tunnel section,
These divided cross members are connected by a cover member, and the side wall portion of the divided end of the cross member is inclined so that the upper end thereof is located inside the closed cross section of the cross member than the lower end thereof, Since the cable member is arranged beyond the tunnel part along the cross member, and the cable member located in the tunnel part is covered with the cover member, it is possible to reliably prevent damage to the cable member that crosses the tunnel part. be.

Furthermore, since the cover member is disposed substantially in line with the cross member, even if torsional force or the like is applied, no unreasonable stress is exerted, and high vehicle body rigidity can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing a lower body structure of an automobile according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the structure from the rear side. 5... Floor panel, 7... Tunnel section, 13
...Cross member, 14...Closed section, 15...
Cover member, 17... Cable member.

Claims (1)

[Claims for Utility Model Registration] A tunnel portion extending in the longitudinal direction is formed in the center of the floor panel, and a cross member extending in the vehicle width direction is joined to the floor panel to form a closed section, and the cross member Divided into left and right by the tunnel,
The divided ends are joined at the vertical wall of the tunnel portion, these divided cross members are connected by a cover member, and the side wall portion of the divided end of the cross member is such that the upper end side is closer to the inside of the closed cross section of the cross member than the lower end side. A cable member is arranged along the cross member and beyond the tunnel part, and the cable member located in the tunnel part is covered by the cover member. Characteristic lower body structure of automobiles.