JPS58126263A - Joint part structure for floor panel - Google Patents

Abstract

PURPOSE:To expand the setting space of a fuel tank in a device provided with a rear seat cloth member extended in the direction of car width on the joint part between a front and a rear floor panel by improving the structure of welded parts of the cloth member to above-said panels. CONSTITUTION:This rear seat cloth member 1A used for jointing a front and a rear floor panel 2 and 3 with each other is divided into three; a center member 10C positioned to correspond to a tunnel part 2b of the panel 2, and a left and a right member 10L and 10R on the left and the right of the same. The left and the right member 10L and 10R with doglegged sections are welded to the underside of the panel 2 in their front edges 10a to remain a space B between a rear edge part 2a of the panel 2 and a front edge part 3a of the panel 3. Rear edges 10b of the left and right members 10L and 10R are welded to the rear face of a vertical wall part 3b of the panel 3. Meanwhile, the center member 10C is formed into a gate-shaped shell, and its upper edge part 10d is welded to the underside of the panel 3 behind the vertical wall 3b.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the body structure of a passenger car, and particularly to an improvement in the joint structure between a 7Q front floor panel and a rear 7V:1 Abanel.

The floor panel joint of a conventional passenger car as shown in FIG. 1 is reinforced (1) by a rear seat cross member 1, as shown in cross section in FIGS. 2 and 3. That is, in the figure, numeral 2 is a 7W front floor panel, and numeral 3 is a rear floor panel.

The rear end of these QA panels 2.3 @ 2 m and the front stiffener 3 extend across the entire width of the vehicle and are joined to the rear end via the front end 1a of the cross member 1, which has a cross section of 1". Because it was done,
The ζO Liliyat cross member l is made in an angled shape with a roof-shaped part 1b corresponding to the central tunnel part 2bK of the front floor panel 2 formed in the center, and its rear end 1c is formed on the lower surface behind the standing wall 3b of the rear floor panel 3. be welded. In addition, in another conventional structural example, as shown in FIG. 4, the rear end Xa of the front floor panel 2 and the front end 3 of the rear 7W panel 30 are welded to each other, and the distance in front of the rear seat cross member 10 is 1 m. Standing wall portion 3 of rear floor panel 3
b Sometimes it is welded to the bottom.

Incidentally, in recent front engine-equipped front-wheel drive vehicles (FF vehicles), a fuel tank is often mounted below the rear seat, that is, below the rear floor panel 3, as shown in FIGS. 2 and 4. However, in the conventional structure mentioned above, there is a vertical wall 3 in the loading space for the fuel tank person.
Ryashitokusmen occupied a large space between B and B/
Due to the location of the fuel tank, it is difficult to secure sufficient capacity for fuel tanks. And in the conventional structure,
If a stone on the road is thrown up as shown by the arrow (indicated by a broken line) in FIG. 2 or 4, the lower edge of the rear seat cross member
Since the position of the rear edge of the kJK-shaped front floor is relatively high on the arc length, it does not function sufficiently as a guard for the fuel tank personnel, so there is a possibility that stones may directly hit the front part of the fuel tank personnel. In addition, when fixing the safety bell F for the front seat to the tunnel portion 2b of the front floor panel 20 as shown in the second figure, it is nearly perpendicular to the long side of the cross section of the rear seat cross member l (approximately 200 degrees upward from the horizontal).
There is also the problem that the rear seat cross member 1 cannot be effectively used as a strength member for a safety belt because it is an input.

Therefore, the present invention aims to provide a unitary structure in which a large-capacity fuel tank can be provided below the rear seat.The front end of the rear seat cross member is placed on the lower surface of the front floor panel, and the rear end of the member is placed on the lower surface of the front floor panel. By welding to the rear surface of the vertical wall of the rear floor panel, the problems of the conventional structure as described above are solved at once.

Hereinafter, details of embodiments of the present invention will be explained with reference to FIGS. S to FIG. 9.

6 to 8 show the first embodiment of the present invention. In the case of the embodiment with Aya, the rear seat black 11721 seat is located at the center member 100 located corresponding to the tunnel portion 2bK, and in FIG. It is made by dividing into three parts, a left member IOL and a right member 10R located on the left and right sides.

That is, the left side member 1oL and the right side member xoR, which are of the same shape and which is a feature of the present invention, have the same shape as shown in cross section in FIG.
The tunnel part is made with a cross-section shaped like a letter! It extends in the vehicle width direction on the left and right sides of b. Then, the left side member 1oL and the right side member I located at the bottom of the main front floor panel 2
The OR is welded to the lower surface of the front floor panel 20, leaving a space B between the rear end 2m of the 7-fourth floor panel 2 and the front end 31 of the rear floor panel 3, which are welded together. . According to one aspect of the present invention,
The rear ends 10b of the left member IOL and the right member 1oR are welded to the rear surface of the standing wall portion 3b of the rear 70 Abanel 3, thereby reinforcing the joint between both floor panels 2.3.

On the other hand, one center member lO of the rear seat cross member
C is made as a gate-reduced shell having a roof-shaped part 10c inserted into the tunnel part 2b as shown in FIG.
Welded to the bottom surface. By welding the left and right proximal ends toct'i of the main center member 100, the lower surface and rear surface of the left side member toL and right side member 10 on the vehicle center side, respectively, the overall rigidity of the rear seat black 11721 can be improved. It is being strengthened. Note that the left and right member IOL
, the IOR can be provided with a tie-down hook 4 like the virtual water drill shown in FIG. It can also be manufactured in a shape that covers the layer from above.

FIG. 9 is an overall view of a rear seat cross member IB according to a second embodiment of the present invention. It consists of a half member IIR, the center part 110 of which is the aforementioned center member 100K, and the left and right side parts 11J1.11r are the aforementioned Yoshitomo 111 and right side member IOL.

10 Constructed in a shape compatible with RK. Of course, in the present invention, the left and right sides 113, the front end tta of llr
.

11m will be welded to the lower surface of 70 points 70 Avanel 2, and the left and right sides 1jg, 1lrO rear@llb, llb beams will be welded to the rear surface of the standing wall portion 3b of Yas0 Avanel 3, respectively.

In addition, in the above two * examples, the Kyowa tunnel part is deviated to the rear, but this may also be formed by extending linearly in the vehicle width direction. However, it may be molded separately into two or three members.

The joint structure of the floor panel according to the present invention is as follows.

With the above configuration, there are no obstructive members behind the standing wall portion 3b of the rear floor panel 3, especially on the left and right sides, as shown in FIG.

A large capacity fuel tank can be mounted under the rear floor panel 30. In the structure of the present invention, even if stones on the road are thrown up as shown by the dashed arrow in Fig. 6, the position of the rear T1 edge of the rear seat cross member located at the lower front of the fuel tank is lower than in the conventional structure. Therefore, the fuel tank A is protected by this member, and the possibility that the fuel tank A will be directly hit by a rock is reduced. Furthermore, when tightening the safety belt for the tunnel portion 2bK70 seat as shown by the solid line arrow in FIG. 6, there is an advantage that the rear cross member can be effectively used as a strength member.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway perspective view of a conventional floor panel joint structure, Figure 2 is a sectional view taken along line 1-1 in Figure 1, and Figure 3 is a view taken along line I-1 in Figure 1. 4 is a sectional view corresponding to FIG. 2 of another conventional joint structure;
FIG. 6 is a sectional view taken along the line Vl--Vl in FIG. 5, FIG. 7 is a sectional view taken along the line ■-■ in FIG. 5, and FIG. 8 is a perspective view similar to FIG. 5 is a sectional view taken along the line -Vl in FIG. 5, and FIG. 9 is an overall perspective view of a rear seat cross member used in a second embodiment of the present invention. ! , IA, IB...Rear seat cross member 2...
front floor panel. 2a... Rear shoulder of front floor panel, 3... Rear 70 Abanel, 3t... Front part of rear floor panel, 3b... Standing part of rear 70 Abanel, lOC... Rear seat cross member seven members, 10L, l0R
- 1 member on the left and right side of the rear seat cross member. 11L...Left half member of rear seat cross member,
oR...Right half member of rear seat cross member, 1
a, 10a, lla...front shoulder of rear seat cross member. lb, 10b, 11b... Rear end of rear seat cross member. Patent applicant: Nissan Motor Co., Ltd. 343

Claims (1)

[Claims] l) A joint structure having a rear seat cross member that extends in the vehicle width direction at the joint between the front end of the rear seat cross member and the front end of the front floor panel. A floor panel joint structure characterized in that the rear end of the opening is welded to the rear wall W of the rear floor panel on the lower surface.