JPH0419240A - Rear seat back fitting structure - Google Patents

Abstract

PURPOSE:To heighten accuracy in the fitting position of a rear seat back by fixing a hinge bracket, provided with a hinge at its tip face part protruding toward the center of the body width direction rigidly to both the raised upper face part of a rear side member and the raised edge end part of a rear floor by spot welding. CONSTITUTION:A previously manufactured hinge bracket 23 with a hinge pro vided at its protruding tip face part 26 is placed on both the raised upper face part 21 of a rear side member 10 and the raised edge end part 22 of a rear floor 11, and rigidly secured at plural places by spot welding. An arm member 3 provided at the lower end corner part of a rear seat back 1 is rotatably screw-fixed to the hinge at the tip face part 26 of the hinge bracket 23. As a result, the fitting span of the rear seat back 1 is determined by the position of the raised edge end part 21 of the rear floor 11 and the shape of the hinge bracket 23, which results in heightening fitting accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> 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 folds forward.

<Prior Art> As a conventional rear seat back mounting structure, there is one shown in FIGS. 4 and 5, for example (see Japanese Utility Model Application Publication No. 18729/1983).

FIG. 4 shows a so-called wheel inner mounting type.

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

In addition, screw insertion holes 6 are formed at predetermined locations on the wheel inner panel 5, and on the outer surface (tire house side), screw fixing materials 9 are screwed together with mounting screws 8 via reinforcing materials 7.
is provided.

In this mounting structure, the rear seat back 1 is rotatably mounted by screwing the arm member 3 to the wheel inch 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 portion of the rear floor 11 reinforced by the rear side member 10. Further, reinforcing members 7 and screw fixing members 13 are provided on the lower surface of the rear floor 11 in correspondence with the screw insertion holes 12.

Further, the seat assembly hinge 14 having an abbreviated shape has screw insertion holes 17 in the bottom surface 15 and the vertical surface 16, respectively.
18 are provided.

To install this type of rear seat back 1, the bottom surface 15 of the seat assembly hinge I4 is screwed into the screw insertion hole 12 provided in the rear floor 11, and then the rear seat back is screwed into the screw insertion hole 18 of the vertical surface 16 of the seat assembly hinge 14. This is done by rotatably screwing the arm member 3 of the bag 1.

<Problems to be Solved by the Invention> However, in the first conventional example (see FIG. 4), since it is directly attached to the wheel inner panel 5, it is affected by the manufacturing accuracy of the wheel inch panel 5.
The installation span accuracy of the rear seat back 1 in the vehicle width direction may deteriorate, or the screw insertion holes 6 may be installed in the wheel inner panel 5 in advance.
, the height of the mounting position cannot be adjusted.

In addition, in the second conventional example (see Fig. 5), the installation span accuracy of the rear seat back 1 in the vehicle width direction was improved by fixing it to the rear floor 11, but the number of parts increases, making parts management difficult. A problem has arisen in that it increases labor and manufacturing man-hours.

Therefore, the present invention provides a rear seat back mounting structure that can improve the accuracy of the rear seat back mounting position, reduce manufacturing man-hours by simplifying the structure, and reduce manufacturing costs. The purpose is to

Means for Solving the Problems> In order to achieve the above object, the rear seat back mounting structure according to the present invention has a structure in which the rear end of the rear floor in the vehicle width direction is raised upward and bent to form a raised edge. A rear side member having a substantially U-shaped cross section is disposed, and the rear side member has a raised upper surface portion that overlaps and is joined to the rising edge portion and extends above the rising edge portion; While the wheel inner panel is joined to the rear seat back and the rising upper surface part, arm members provided at both lower end corners of the rear seat back disposed on the rear floor are attached to hinges provided at predetermined locations on the vehicle body so as to be freely rotatable. In the mounting structure of the rear seat back which is screwed to and the rising edge of the rear floor, and are fixed at multiple locations by spot welding.

<Function> A hinge bracket with a hinge on the protruding end surface is manufactured in advance, and this 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 multiple points by spot welding. do.

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

As a result, 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 accuracy can be improved.

Furthermore, since the hinge bracket is the only part to be attached to the vehicle body, the structure is simple and manufacturing is easy.

<Embodiment> A preferred embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Here, parts common to the conventional example are given the same reference numerals, and redundant explanations will be omitted.

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

Further, a portion of the rear floor 11 at the end in the vehicle width direction that contacts the wheel inner panel 5 is bent up to match the shape of the wheel inner panel 5, and forms a rising edge portion 22.

On the other hand, the hinge bracket 23 has a mounting flange 24 at the bottom.
It has a protrusion 25 fixed thereon. Since this flange 24 is attached across the rising upper surface portion 21 of the rear side member 10 and the rising edge portion 22 of the rear floor 11, a step corresponding to the plate thickness of the rising edge portion 22 is provided. . The protruding portion 25 has a rectangular prism shape with a tip end surface portion 26, and its protruding amount H is such that when it is attached to both the left and right sides of the vehicle body, the distance between the image tip surfaces is the installation span of the rear seat back 1 in the vehicle width direction. 1 (see Figure 2).

A screw insertion hole 27 (hinge) is formed in the center of the distal end surface 26 of the protrusion 25, and a mounting screw 28 is formed inside the hole 27 (hinge).
A screwing member 29 that is screwed together is fixed.

Next, the procedure for installing the rear seat back 1 will be explained.

First, the hinge bracket 23 is prepared in advance.

Next, the flange 24 of the hinge bracket 23 is temporarily fixed to the rising edge 22 of the rear floor 11 by spot welding (see FIG. 3(A)). And rear side member 10
The inner surface of the rising upper surface portion 21 (the surface on the center side in the vehicle width direction) is
The rear side member 10 is arranged so as to be in contact with the outer surface of the rising edge portion 22 of the rear floor 11 (the outer surface in the vehicle width direction),
Rising upper surface portion 21. The rising edge portion 22 and the flange 24 of the hinge bracket 23 are overlapped and fixed at multiple locations by spot welding (see FIG. 3(B)).

After the hinge bracket 23 is attached and the rear floor 11 is attached to the vehicle body (not shown), the arm member 3 of the rear seat back 1 is screwed to the tip end surface 26 of the hinge bracket 23, and the rear seat back 1 is rotated. Attach freely (see Figure 1).

In this way, the rear seat back 1 is attached to the rear floor 11 via the hinge bracket 23, so that the hinge bracket 23 is the only part to be attached to the vehicle body, making the structure simple and easy to manufacture. In addition, the rear seat back 1 installation span l in the vehicle width direction is the rear seat back 1 installation span l.
1 rising edge 22 position and hinge bracket 23
Since it is determined by the amount of protrusion H, the accuracy can be increased and the height h of the mounting position can be easily adjusted (see Fig. 2).

Note that the present invention is not limited to the above-mentioned embodiments, but also includes the following modifications.

That is, although the hinge bracket 23 has a rectangular prism-shaped protrusion 25 fixed to the flange 24, the shape of the protrusion 25 is not limited to this, and the shape of the protrusion 25 may be arbitrary, for example, it may be cylindrical.

Moreover, the hinge bracket 23 is temporarily fixed to the rising edge part 22 of the rear floor 11 by spot welding, and then the rising upper surface part 21. The rising edge portion 22 and the flange 24 of the hinge bracket 23 were overlapped and spot welded, but using a jig, the rising upper surface portion 21. The rising edge portion 22 and the flange 24 of the hinge bracket 23 may be overlapped and spot welded.

<Effects of the Invention> Since the rear seat back mounting structure according to the present invention has the content as described above, it is possible to significantly improve the accuracy of the rear seat back mounting position. Furthermore, since the structure can be simplified, the number of manufacturing steps can be reduced, and by extension, the manufacturing cost can be effectively reduced.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a rear seat back mounting structure according to an embodiment of the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 (A) beam. A perspective view showing a state in which the hinge bracket is temporarily fixed to the rising edge of the floor, and FIG. 3(B) shows a state in which the rising upper surface, the rising edge, and the flange of the hinge bracket are overlapped and spot welded. 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. l...Rear seat back 3...Arm material 5 Wheel inner panel IO...Rear side member...Rear floor...Rising upper surface of rear side member...Rising edge of rear floor...Hinge bracket...・Tip of the hinge bracket ・Screw insertion hole (hinge) ・Screw

Claims (1)

[Scope of Claims] The rear end of the rear floor in the vehicle width direction is raised upward and bent to form a rising edge, and is overlapped and joined to the rising edge and is located above the rising edge. A rear side member having a generally U-shaped cross section and a raised upper surface extending up to the rear side member is disposed, and a wheel inner panel is joined to the raised edge and the raised upper surface, while a rear seat back is disposed on the rear floor. The rear seat back mounting structure is such that arm members provided at both lower corners of the vehicle body are rotatably screwed to hinges provided at predetermined locations on the vehicle body. A hinge bracket is formed on the tip end surface portion protruding from the rear side member, 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 and fixed at multiple locations by spot welding. Features a rear seat back mounting structure.