JPH10129534A - Rear seat installation part structure for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve installation rigidity of a seat back and to protect a spare tire by providing a connecting member to connect a hinge for rear seat installation fixed on a rear floor cross member and a spare tire fixing bracket to each other. SOLUTION: A rear floor cross member 8 is fixed on a rear floor 7 so as to cover a front part of a recessed part 7a for spare tire storage. A spare tire 9 is joined and fixed by a weld nut 10b of a spare tire fixing bolt 13 and a spare tire fixing bracket 10 after aligning a hole of a wheel part 9a and a hole part on a head end of the spare tire fixing bracket 10 provided on the recessed part 7a for spare tire storage and aligning a hole part of a second connecting member. Consequently, it is possible to connect and joint a rear seat back 2 and the spare tire fixing bracket 10, improve installation rigidity of the seat back and to protect the spare tire.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for fixing a rear seat of an automobile to a floor.

[0002]

2. Description of the Related Art A vehicle rear seat 1 comprises a rear seat back 2 and a rear seat seating surface 3, as shown in FIGS. The spare tire 9 is shown in FIGS.
As shown in Japanese Utility Model Publication No. 2-12148, the spare tire fixing bracket 10 and the spare tire wheel portion 9a are fixed to the spare tire storage recess 7a of the rear floor 7 by bolts and nuts. The rear floor cross member 8 is fixed on the rear floor 7 so as to cover the front of the spare tire storage recess 7a. The rear seat back 2 is fixed by supporting three points on the vehicle body. The first point is supported on the rear floor 7 by bolts and nuts through a first hinge 4 previously attached to a lower portion of the rear seat back 2. The second point is supported by the bolts and nuts on the rear floor cross member 8 through the second hinge 5 previously attached to the lower portion of the rear seat back 2. The third point is fixed to a side body (not shown) through a lock mechanism (not shown) provided on the rear seat back 2 and a striker 6 fixed to the side body (not shown). The rear seat surface 3 is fixed to the rear floor 7 by a fixing method (not shown).

When comparing the lower mounting portion of the rear seat back 2, the first point is that the rigidity is high because it is directly mounted on the rear floor 7, but the second point is that the rear floor 7 is attached to the open portion (the side not welded) of the rear floor cross member 8 which is welded in an L-shape (the position indicated by the mark x in the figure), there is a problem in rigidity. That is, when an occupant sits on the rear seat 1, a load is naturally applied downward, so that the second support portion is also applied a downward load. As a result, stress concentrates on the portion A (see FIG. 3) of the rear floor cross member 8, and a problem in strength arises. Further, the mounting side of the second hinge 5 of the rear floor cross member 8 may be deformed downward and fall down to contact the spare tire 9 when the occupant is seated. For this reason, it is necessary to increase the thickness of the rear floor cross member 8, increase the number of spot welds when welding the rear floor cross member 8, and add a reinforcing plate 16 as shown in FIG. By the way, the problem of contact can be solved by using the method described above,
When the thickness of the rear cross member 8 increases,
By adding, weight and cost increase. Also, the amount of assembling work increases due to an increase in the number of spot welds. Further, the above-described method does not increase the rigidity of the rear seat back 2 itself, and does not contribute to improving the riding comfort.

[0004]

SUMMARY OF THE INVENTION According to the present invention, it is possible to increase the mounting rigidity of a seat back and improve riding comfort without increasing the thickness of a rear floor or a rear floor cross member, or adding a reinforcing plate. Provide a structure capable of protecting a spare tire.

[0005]

In order to achieve the above object, the present invention is characterized in that a rear seat mounting hinge fixed to a rear floor cross member and a connecting member for connecting a spare tire fixing bracket are provided. I do.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side sectional view showing a rear seat mounting portion using the present invention, FIG. 2 is a perspective view of an essential part of FIG. 1 taken out and disassembled, and FIG. 3 is a general rear seat for explaining the present invention. FIG.

The vehicle rear seat 1 includes a rear seat back 2 and a rear seat seating surface 3. The spare tire 9 is stored in a spare tire storage recess 7 a of the rear floor 7. The rear floor cross member 8 is fixed on the rear floor 7 so as to cover the front portion of the spare tire storage recess 7a. The rear seat back 2
Are supported at three points. The first point is supported by the bolts and nuts on the rear floor 7 through a first hinge 4 previously attached to a lower portion of the rear seat back 2. The second point is that the rear seat back 2
The rear floor cross member 8 and the first connecting member 11 are connected and supported by the second hinge fixing bolts 15a and 15b and the welding nut 11a of the first connecting member 11 through a second hinge 5 attached to a lower portion of the first member. ing. 3
The spot is supported by a lock mechanism (not shown) provided on the rear seat back 2 and a striker 6 fixed to a side body (not shown). The rear seat surface 3 is fixed to the rear floor 7 by a fixing method (not shown).

The spare tire 9 has a hole in the wheel portion 9a (one of 4 to 5 holes for inserting hub bolts generally drilled in the wheel) and a concave portion 7a for storing the spare tire. After aligning the hole 10a at the tip of the provided spare tire fixing bracket 10 with the hole 12a of the second connecting member 12 and the two holes, the spare tire fixing bolt 13 and the The spare tire fixing bracket 10 is connected and fixed by a welding nut 10b. Further, the first connecting member 1
1 and the second connecting member 12 are provided with a length adjusting bolt 14
And the first connection member 11 is fixed by a welding nut 11b. As a result, the rear seat back 2 and the spare tire fixing bracket 10 are connected and connected. The elongated hole 12b of the second connecting member 12 is for accommodating changes in the shape and thickness of the wheel 9a. By the way, when using spare tire 9,
The spare tire fixing bolt 13 may be removed, the length adjusting bolt 14 may be loosened, and the second connecting member 12 may be rotated upward. Further, in the above-described embodiment, the example in which the rear seat back is divided into a plurality is shown.

[0009]

According to the present invention, since the connecting member for connecting the rear seat mounting hinge fixed to the rear floor cross member and the spare tire fixing bracket is provided, it is not necessary to increase the thickness of the rear floor or the rear floor cross member or to add a reinforcing plate. However, it is possible to increase the mounting rigidity of the seat back, improve the riding comfort, and protect the spare tire. Also, since it is not necessary to increase the thickness of the entire rear floor or rear floor cross member, or to add a reinforcing plate,
Even if the weight increase due to the connecting member is converted, the weight is still reduced. The connection between the rear seat back mounting section and the spare tire fixing section increases the strength and torsional rigidity of the entire body, which can contribute to improved steering stability.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a rear seat mounting portion utilizing the present invention.

FIG. 2 is an exploded perspective view of an essential part of FIG.

FIG. 3 is a perspective view showing a general mounting of a rear seat back for explaining the present invention.

FIG. 4 is a side sectional view showing a conventional rear seat mounting portion.

FIG. 5 is a perspective view in which a reinforcing plate is added to a conventional joint between a rear floor and a rear floor cross member.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rear seat 2 rear seat back 3 rear seat seating surface 4 first hinge 5 second hinge 6 striker 7 rear floor 7 a rear floor spare tire storage recess 8 rear floor cross member 9 spare tire 9 a wheel 10 spare tire fixing bracket 11 first connection Member 12 Second connecting member 13 Spare tire fixing bolt 14 Length adjusting bolt

Claims (2)

[Claims] In a rear seat mounting structure in which a seat back is fixed at least by a first hinge fixed to a rear floor and a second hinge fixed to a rear floor cross member, the second hinge and a spare tire are fixed. A rear seat mounting structure for a vehicle, comprising a connecting member for connecting a bracket. 2. The rear seat mounting structure for a vehicle according to claim 1, wherein the connecting member is divided into a plurality of parts, and at least one connecting member is provided with an elongated hole.