JP2001225681A - Rear floor structure of car body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rear floor structure for a car body possible of attaching a lock metal fitting for attaching a child restraint system at low cost while securing the positional accuracy and support rigidity. SOLUTION: A cross member 12 extending in the car body width direction is arranged on the rear floor member 1 in a rear position of a rear sear 5, and the both ends of the cross member 12 are fixed to the rear floor ember 1 by being fastened along with a support bracket 6 of the rear sheet 5. A lock metal fitting 16 for fixing the child restraint system mounted on the rear sheet 5 is fixed to the cross member 12 and the lock metal fitting is fixed to the single cross member 12 so that its positional accuracy can be secured. The rear seat 5 and the cross member 12 are arranged adjacent to each other, and the lock metal fitting 16 is shortened so as to improve the support rigidity. It also becomes unnecessary to separately form the fitting holes for the cross ember 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear floor structure of a vehicle body, and more particularly to a rear floor structure provided with a lock for attaching a child seat.

[0002]

2. Description of the Related Art As shown in FIG. 6, a child seat 23 is installed on a seat cushion 21 of a vehicle seat 20 as an ISO standard for mounting a child seat on a vehicle seat. In addition, a lock fitting 24 formed by bending a round bar into a hat cross-sectional shape or a U-shape is fixedly disposed on the vehicle body side at a position below the lower end of the seat back 22.
The front end of the lock fitting 24 is inserted into and engaged with a locking groove 26 provided at the rear end of a connector 25 extending rearward from the rear lower end of the child seat 23 disposed above, whereby the child seat 23 is moved. One that is fixed is proposed.

A plurality of lock fittings 24 are provided in the left and right direction on the rear floor, one for each child seat.
In addition, since each pair of lock fittings 24 is required to have a predetermined strength and rigidity at the distal end and a positional accuracy,
When the step between the rear floor and the seat cushion 21 is small, such as in a passenger car, a lock fitting mounting plate 27 for securing the mounting strength is used as shown in FIG. While the base 24 is positioned, the base thereof is fixed by welding, and the lock fitting mounting plate 27 is fastened and fixed to the rear floor with a fixing bolt 28 or the like. The rear floor may be raised on both sides in the vehicle width direction. In this case, the lock fitting mounting plate 27 is not a flat plate but is bent at an intermediate portion, and the shape of the lock fitting 24 is also outside the vehicle width direction. And the inner ones are different.

The rear floor and the seat cushion 21
In the case where there is a large step between the two, the lock fitting 24 is attached to the seat cushion frame 29 or the seat back frame as shown in FIG.

[0005]

However, the configuration shown in FIG. 7 requires a large-sized lock fitting mounting plate 27 which can secure a predetermined strength only for mounting the lock fitting 24. , This lock fitting mounting plate 2
A complicated jig is required when the lock fitting 24 is attached to the lock 7, so that there is a problem in that the component cost and the mounting cost are increased and the cost is disadvantageous.

In addition, in the structure shown in FIG. 8, since a load is received by the frame of the seat, it is necessary to reinforce the seat legs and hinges, which is disadvantageous in terms of structure.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, an object of the present invention is to provide a rear floor structure of a vehicle body in which a lock fitting for attaching a child seat can be attached at a low cost while ensuring positional accuracy and support rigidity. .

[0008]

In the rear floor structure of a vehicle body according to the present invention, a cross member extending in the width direction of the vehicle body is disposed at a position behind the rear seat on the rear floor, and both ends of the cross member are connected to the rear seat. The support bracket is fixed to the rear floor with fixing bolts that fix it to the rear floor, and a lock member for fixing the child seat placed on the rear seat is fixed to the cross member, and the tip end extends forward. It is a thing.

According to this structure, since the lock member is fixed to the cross member, high support rigidity can be easily secured. Further, since the lock member is mounted on one member, the work can be performed using a simple jig. It can be mounted easily and with high pitch accuracy, the basic shape of the lock bracket can be made the same, cost can be reduced, and both ends of the cross member are fixed to the rear floor together with the support bracket, so the rear floor It is not necessary to provide a separate mounting hole on the vehicle and a cover is not required when the cross member is not mounted, so that the cost can be reduced. In addition, since the rear seat and the cross member can be arranged close to each other, the length of the lock bracket The support bracket can be connected with a cross member to improve the support rigidity of the rear seat. It can be.

Further, if the mounting surface of the support bracket on the rear floor is an inclined surface that rises rearward, the cross member is disposed closer to the upper side, so that the lock fitting is oriented in the tension direction (horizontally forward) at the time of collision. Since it can be approached, the support rigidity can be improved, and another bracket for raising the height to obtain the same effect is not required, so that the configuration can be made at low cost.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a rear floor structure of a vehicle body according to the present invention will be described below with reference to FIGS.

Numeral 1 denotes a rear floor member. Raised portions 2 are bulged on both sides in the vehicle body width direction at the rear portion thereof, and a concave portion 3 is formed therebetween. (Not shown) so as to use the inside of the concave portion 3 as a storage space. The front surface of the raised portion 2 is constituted by an inclined surface 4 that is inclined upward toward the rear.

A rear seat 5 is disposed in front of the raised portion 2 of the rear floor member 1, and a support bracket 6 for supporting a rear end thereof is attached to the inclined surface 4. The rear seat 5 includes a seat cushion 7 and a seat back 8 disposed upward from a rear end thereof. The lower end of the seat back 8 is supported by a support bracket 6 via a reclining mechanism 9 so as to be able to recline in the front-rear direction. The reclining mechanism 9 is configured by supporting a hinge bracket 11 fixed to a lower portion on both sides of the seat back 8 via a pivot 10 so as to be able to swing back and forth by a support bracket 6, and a mechanism formed on the hinge bracket 11. By locking a locking mechanism (not shown) with the locking teeth 11a, the locking mechanism can be locked and fixed at an arbitrary swing position.

At the rear position of the rear seat 5 on the rear floor member 1, there is provided a cross member 12 extending in the vehicle width direction as shown in FIGS. Cross member 1
Numeral 2 is made of a pipe material, and both ends thereof are welded and fixed to an inner surface of a mounting bracket 13 formed by bending a plate material into a flat concave shape. The mounting bracket 13 extends outward from both ends of the cross member 12,
A mounting hole 14 is formed in the bottom surface of the extension. The mounting holes 14 are arranged so as to coincide with rear mounting holes of a pair of front and rear mounting holes (not shown) formed in the support bracket 6, and as shown in FIG. 13 is fixed to the inclined surface 4 of the rear floor member 1 by fastening together with the fixing bolt 15 of the support bracket 6. In FIG. 3, reference numeral 18 denotes a reinforcing member disposed on the back surface of the inclined surface 4, and is provided to secure the mounting strength and rigidity of the support bracket 6 and the cross member 12.

To the cross member 12, two pairs of lock fittings 16 (16a, 16b) for fixing two child seats (not shown) mounted on the rear seat 5 are fixed. 16a is a lock fitting on the outside in the vehicle width direction,
Reference numeral 16b denotes a lock fitting on the inner side in the vehicle width direction. These lock fittings 16 are formed by bending a round bar material into a substantially U-shape in plan view, and bending both ends thereof into an arc shape in side view along the outer periphery of the cross member 12 made of a pipe. The mounting leg 17 is attached to the outer periphery of the cross member 12 by welding. The lock member 16 thus attached to the cross member 12 extends linearly forward from the cross member 12, and the engagement portion at the tip faces the gap between the seat cushion 7 and the seat back 8 of the rear seat 5. .

In this embodiment, as shown in FIG. 4 and FIG. 5, in order to secure a space for mounting the mounting bracket 13 together with the support bracket 6, the end of the cross member 12 is in the vehicle width direction. The outer lock metal 16a is cut at an inner position in the vehicle width direction from the outer edge of the lock metal 16a, and accordingly, the outer mounting leg 17 of the lock metal 16a is formed in a shape bent inward in the vehicle width direction. The shape is different from that of the lock fitting 16b on the inner side in the width direction. Also,
As shown in FIGS. 3 and 5, a reinforcing piece 13a extends from the upper edge of the front wall of the mounting bracket 13 and is welded to the vicinity of the mounting leg 17 of the lock fitting 16a to prevent deformation of the base of the lock fitting 16a. Have been.

In the above configuration, the lock member 1 is attached to the single cross member 12 disposed on the rear floor member 1.
6 can be easily secured high fixing rigidity.
In addition, since the lock member 16 is mounted on one cross member 12, a simple jig can be used without using a base bracket or a complicated jig for positioning each pair of lock members 16a and 16b with a predetermined pitch accuracy. It can be mounted with high workability and high pitch accuracy. Further, in the present embodiment, the lock fittings 16a on the outer side in the vehicle width direction are partially different in shape. However, all the lock fittings 16 may be parts having the same shape. Are the same, the mold cost can be reduced and the cost can be reduced.

Further, both ends of the cross member 12 are connected to the support bracket 6 of the rear seat 5 via the mounting bracket 13.
Since it is fixed to the rear floor member 1 together with
Since it is not necessary to provide another mounting hole in the rear floor member 1 and a cover is not required when the cross member 12 is not mounted, the cost can be reduced. Further, since the rear seat 5 and the cross member 12 can be arranged close to each other, the length of the lock member 16 can be reduced, and the support rigidity can be improved. The cross member 1 is also provided on the support bracket 6 side.
2, the support rigidity of the rear seat 5 can be improved.

Further, since the support bracket 6 is mounted on the inclined surface 4 on the front surface of the raised portion 2 which rises rearward, the cross member 12 is disposed closer to the upper side. Can be made closer to the tension direction, that is, the horizontal forward direction, so that the support rigidity can be improved. Further, another bracket for raising the height for obtaining the same action is not required, so that the configuration can be made at low cost.

Further, since the strength and rigidity of the vehicle body in the vehicle width direction can be improved by the cross member 12, the running stability of the vehicle body can be improved.

[0021]

According to the rear floor structure of the vehicle body of the present invention, since the lock member is fixed to the cross member as described above, high support rigidity can be easily secured, and the lock member can be mounted on one member. Since it can be mounted, it can be mounted with high pitch accuracy with good workability using a simple jig, the basic shape of the lock bracket can be made the same, cost can be reduced, and both ends of the cross member can be shared with the support bracket. Since it is fixed to the rear floor by tightening, there is no need to provide a separate mounting hole on the rear floor and no cover is required when the cross member is not mounted, so that cost reduction can be achieved, and the rear seat and cross member can be separated. Because it can be arranged close to each other, the length of the lock bracket can be shortened, supporting rigidity can be improved, and the support bracket is connected by a cross member. Supporting rigidity of Yashito can be improved.

Further, if the mounting surface of the support bracket on the rear floor is an inclined surface that rises rearward, the cross member is disposed closer to the upper side, so that the lock fitting is oriented in the tension direction (horizontally forward) at the time of collision. Since it can be approached, the support rigidity can be improved, and another bracket for raising the height to obtain the same effect is not required, so that the configuration can be made at low cost.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part of an embodiment of a rear floor structure of a vehicle body of the present invention.

FIG. 2 is a perspective view of the cross member of the embodiment.

FIG. 3 is a longitudinal sectional view showing a mounting state of a support bracket and a cross member in the embodiment.

FIG. 4 is a view of the cross member of the embodiment and the state of attachment thereof viewed from the rear.

FIG. 5 is a plan view taken along the line AA of FIG. 4;

6A and 6B show a mounted state of the child seat, wherein FIG. 6A is an overall perspective view, and FIG. 6B is a detailed perspective view of a portion B of FIG.

FIG. 7 is a perspective view showing an attached state of a conventional lock fitting.

FIG. 8 is a perspective view showing an attached state of another conventional lock fitting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rear floor member 4 Inclined surface 5 Rear seat 6 Support bracket 12 Cross member 15 Fixing bolt 16 (16a, 16b) Lock fitting

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Noriyoshi Yagi 2-1-1 Taoyuan, Ikeda-shi, Osaka Daihatsu Kogyo Co., Ltd. F-term (reference) 3B087 CE06 DA03

Claims (2)

[Claims] 1. A cross member extending in the width direction of a vehicle body is provided on a rear floor at a position behind a rear seat, and both ends of the cross member are fastened together by fixing bolts for fixing a support bracket of the rear seat to the rear floor. A lock member for fixing a child seat placed on the rear seat to a cross member, and a front end portion thereof extending forward. 2. The rear floor structure for a vehicle body according to claim 1, wherein the mounting surface of the support bracket on the rear floor is an inclined surface rising rearward.