JP2507134B2 - Riyate back mounting structure - Google Patents

Description

The present invention relates to a rear seat back mounting structure, and more particularly to a rear seat back mounting structure suitable for mounting a rear seat back that tilts forward.

<Prior Art> As a conventional rear seat back mounting structure, for example, there is one as shown in FIGS. 4 and 5 (see Japanese Utility Model Laid-Open No. 53-18729). FIG. 4 shows a so-called wheel inner mounting type.

In the drawing, notches 2 are provided at both lower end corners of a rear seat back 1, and an arm member 3 is attached to the notches 2 so as to project downward. A screw insertion hole 4 is formed near the tip of the arm member 3.

In addition, a screw insertion hole 6 is formed at a predetermined position of the wheel inner panel 5, and its outer surface (on the tire house side).
Is provided with a screwing member 9 that is screwed with the mounting screw 8 via the reinforcing member 7.

In this mounting structure, the rear seat back 1 is rotatably mounted by screwing the arm member 3 to the wheel inner panel 5.

On the other hand, FIG. 5 shows a so-called floor mounting type.

In the figure, a screw insertion hole 12 is provided in a rear floor 11 at a portion reinforced by a rear side member 10.
Further, a reinforcing material 7 and a screwing material 13 are provided on the lower surface of the rear floor 11 corresponding to the screw insertion holes 12.

Further, the substantially L-shaped seat assembly hinge 14 is provided with screw insertion holes 17 and 18 on a bottom surface 15 and an upright surface 16, respectively.

To mount the rear seat back 1 of this type, the bottom surface 15 of the seat assembly hinge 14 is screwed into the screw insertion hole 12 provided in the rear floor 11, and the rear seat is inserted into the screw insertion hole 18 of the vertical surface 16 of the seat assembly hinge 14. This is performed by screwing the arm member 3 of the back 1 rotatably.

<Problems to be Solved by the Invention> However, in the first conventional example (see FIG. 4), since the wheel inner panel 5 is directly attached, the rear seat is affected by the manufacturing accuracy of the wheel inner panel 5. The accuracy of the mounting span of the back 1 in the vehicle width direction is deteriorated, and the wheel inner panel 5 is preliminarily provided with the screw insertion holes 6, so that the height of the mounting position cannot be adjusted.

Further, in the second conventional example (see FIG. 5), the mounting span accuracy of the rear seat back 1 in the vehicle width direction is improved by fixing it to the rear floor 11, but since the number of parts increases, the parts management is increased. There has been a problem that it causes an increase in labor and manufacturing man-hours.

Therefore, the present invention provides a rear seat back mounting structure that improves the accuracy of the mounting position of the rear seat back and simplifies the structure to reduce the number of manufacturing steps, and thus the manufacturing cost. The purpose is to

<Means for Solving the Problems> In order to achieve the above-mentioned object, the rear seat back mounting structure according to the present invention forms a rising edge portion by raising and bending an end in the vehicle width direction behind the rear floor upward. A rear side member having a substantially U-shaped cross section, which is superposed on the rising edge and is joined to the rising edge, and which has a rising upper surface extending upward from the rising edge. While the wheel inner panel is joined to the upper part and the rising upper surface part, the arm members provided at both lower end corners of the rear seat back arranged on the rear floor can be freely rotated by the hinge provided at a predetermined position of the vehicle body. In a mounting structure for a rear seat back, which is screwed to, a hinge bracket having the hinge at a tip portion protruding toward the center in the vehicle width direction is formed, and the hinge bracket is The upper part of the rear side member and the rising edge of the rear floor are overlapped with each other and fixed by spot welding.

<Operation> A hinge bracket having a hinge on the protruding front end surface is manufactured in advance, and the hinge bracket is overlapped with the rising upper surface of the rear side member and the rising edge of the rear floor and fixed at a plurality of points by spot welding. .

Then, the arm member provided at the lower end corner of the rear seat back is rotatably screwed to the hinge on the tip end surface of the hinge bracket.

Accordingly, the mounting span of the rear seat back is determined by the position of the rising edge of the rear floor and the shape of the hinge bracket, so that the accuracy can be improved.

Further, since the hinge bracket is the only part to be mounted on the vehicle body side, the structure is simple and the manufacture is easy.

<Practical Example> A preferred embodiment of the present invention will be described below with reference to FIGS. Here, the same parts as those in the conventional example are designated by the same reference numerals, and the duplicated description will be omitted.

In the figure, a rear side member 10 is a box-shaped member having an opening on one side, and flanges are formed on both outer sides of this opening.
Equipped with 20. The rear side member 10 is a member for reinforcing the rear floor 11 by attaching the flange 20 to the lower surface of the rear floor 11 by welding with the opening portion facing upward. The flange 20 of the portion that contacts the wheel inner panel 5 extends upward in the drawing to form a rising upper surface portion 21 (see FIG. 2).

A portion of the rear floor 11 at the end in the vehicle width direction that abuts the wheel inner panel 5 is bent up in accordance with the shape of the wheel inner panel 5 to form a rising edge 22.

On the other hand, the hinge bracket 23 has a mounting flange 24 at the bottom, and a protrusion 25 is fixed on the mounting flange 24. The flange 24 is formed by the rising upper surface portion 21 of the rear side member 10.
Since it is attached so as to straddle the rising edge 22 of the rear floor 11, a step is formed by the plate thickness of the rising edge 22. The protruding portion 25 is in the shape of a quadrangular prism having a front end surface portion 26, and the protrusion amount H is such that when the rear seat back 1 is mounted on the left and right sides of the vehicle body, the distance L between both front end surfaces is a mounting span in the vehicle width direction. It is determined to correspond to l (see FIG. 2). A screw insertion hole 27 (hinge) is formed at the center of the tip surface portion 26 of the protruding portion 25, and a screwing member 29 that is screwed into the mounting screw 28 is fixed to the inside thereof.

 Next, the procedure for attaching the rear seat back 1 will be described.

 First, the hinge bracket 23 is prepared in advance.

Next, attach the flange 24 of the hinge bracket 23 to the rear floor.
Temporarily fixed to the rising edge 22 of 11 by spot welding (3rd
See FIG. The inner surface (the surface on the center side in the vehicle width direction) of the rising upper surface portion 21 of the rear side member 10 is the rear floor.
The rear side member 10 is arranged so as to contact the outer surface (the outer surface in the vehicle width direction) of the rising edge portion 22 of the rising edge portion 21,
Rising edge 22 and flange 24 on hinge bracket 23
Are overlapped and fixed by spot welding at a plurality of points (see FIG. 3 (B)).

Then, after the rear floor 11 to which the hinge bracket 23 is attached is attached to the vehicle body (not shown), the arm member 3 of the rear seat back 1 is attached to the front end surface portion 26 of the hinge bracket 23.
The rear seat back 1 is rotatably attached by screwing it on (see FIG. 1).

Since the rear seat back 1 is attached to the rear floor 11 via the hinge bracket 23 in this manner, only the hinge bracket 23 is attached to the vehicle body side, and the structure is simple and the manufacturing is easy. Further, since the rear seat back 1 mounting span 1 in the vehicle width direction is determined by the position of the rising edge 22 of the rear floor 11 and the protrusion amount H of the hinge bracket 23, the accuracy can be improved and the height of the mounting position can be increased. The h adjustment can be easily performed (see FIG. 2).

The present invention is not limited to the above-mentioned embodiment, and includes the following modifications.

That is, as the hinge bracket 23, the one in which the rectangular columnar protrusion 25 is fixed to the flange 24 is used, but the shape of the protrusion 25 is not limited to this, and may be, for example, a columnar one.

Further, the hinge bracket 23 is temporarily fixed to the rising edge portion 22 of the rear floor 11 by spot welding, and then the rising upper surface portion 21, the rising edge portion 22 and the flange 24 of the hinge bracket 23 are overlapped to perform spot welding. However, spot welding may be performed by stacking the rising upper surface portion 21, the rising edge portion 22, and the flange 24 of the hinge bracket 23 at once using a jig.

<Advantages of the Invention> Since the rear seat back mounting structure according to the present invention has the contents described above, the accuracy of the rear seat back mounting position can be significantly improved. further,
Since the structure can be simplified, the number of manufacturing steps can be reduced and the manufacturing cost can be effectively reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mounting structure of a rear seat back according to an embodiment of the present invention, FIG. 2 is a sectional view showing a section taken along line II-II in FIG. 1, and FIG. FIG. 3B is a perspective view showing a state where the hinge bracket is temporarily fixed to the rising edge portion of the rear floor, and FIG. 3B shows a state in which the rising upper surface portion, the rising edge portion and the flange of the hinge bracket are overlapped and spot welding is performed. FIG. 4 is a sectional view showing a conventional example of a so-called wheel inner mounting type, and FIG. 5 is a sectional view showing a conventional example of a so-called floor mounting type. 1 …… Rear seat back 3 …… Arm material 5 …… Wheel inner panel 10 …… Rear side member 11 …… Rear floor 21 …… Rear side member rising upper surface 22 …… Rear floor rising edge 23 …… Hinge bracket 26… … Tip part of hinge bracket 27 …… Screw insertion hole (hinge) 28 …… Screw

Claims (1)

(57) [Claims] 1. A vehicle widthwise end at the rear of the rear floor is raised upward and bent to form a rising edge portion, and the rising edge portion is superposed and joined to the rising edge portion to a position higher than the rising edge portion. A rear side member having a substantially U-shaped cross section having a rising upper surface portion that is extended is arranged, and a wheel inner panel is further joined to the rising edge portion and the rising upper surface portion, while a rear seat back that is arranged on the rear floor is provided. In a rear seat back mounting structure in which arm members provided at both lower end corners are rotatably screwed to a hinge provided at a predetermined position of a vehicle body, the hinge is moved toward the center in the vehicle width direction. A hinge bracket is formed on the protruding front end surface portion, and the hinge bracket is overlapped with the rising upper surface portion of the rear side member and the rising edge portion of the rear floor. Mounting structure of the rear seat back, characterized in that the plurality of locations fixed in a pot welding.