JPS621967Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a simple seat frame suitable for use, for example, in the seat cushion of an automobile seat.

Conventionally, this type of seat frame can be roughly divided into types that combine a channel frame and spring material, and types that are drawn from a single plate, but these require many processing steps due to their structure. This has caused problems such as decreased productivity and increased costs. In addition, the aperture panel type seat frame has a limit in the amount of aperture, and may not be able to meet various demands, and some countermeasures are required.

The purpose of the present invention is to provide an inexpensive and simple seat frame that can be formed into a desired shape by simple molding in response to such requests, and will be clear from the detailed description below with reference to the drawings. It will be.

1 to 3 show an embodiment of the seat frame according to the present invention. In these figures, reference numeral 1 denotes a seat frame formed with a recessed bottom; As is clear from FIG. 3, it is formed by bending a frame material 3 having a substantially rectangular shape that is punched out to a desired size from a single metal plate 2.

That is, this frame material 3 has slits 4 cut diagonally from the tops of four places with a desired groove width, bent pieces 5a cut upward from both side edges of the slits 4, 5b, and these slits 4 and bent pieces 5a, 5
b is formed at the same time when the frame material 3 is punched out. In this case, the length of the cut of the slit 4 is determined by the width of the bottom 1a of the seat frame 1 and the length of the side edge 1b in the height direction, and the groove width is determined by the inclination angle of the side edge 1b. It is set taking into account the following.

Then, each side edge of the frame material 3 is bent upward using a press or the like with the bottom side of the slit 4 as a reference, and the both side edges of each slit 4 are pressed against each other at positions where they abut each other. What is necessary is to butt the bent pieces 5a and 5b forming the shape and join them by spot welding or the like.

The seat frame 1 formed in this way is formed from a single metal plate by simple bending and welding, so the structure is extremely simple compared to the conventional channel frame type, reducing the number of parts and processing man-hours. It is superior in terms of productivity and manufacturing cost. In addition, unlike the drawn panel type, there is no need to perform multiple frame molding processes, and the molding process is easy.Furthermore, there are no restrictions on board thickness, etc., and the strength is sufficient, making it possible to create a low-cost seat frame. It becomes possible to obtain. In particular, with the seat frame 1 according to the present invention, any depth shape can be easily and reliably obtained.

FIGS. 4 and 5 show modified examples of the seat frame according to the present invention, and the seat frame 1 shown in FIG. The seat frame 1 has the same structure and operation effects as the above-mentioned embodiment, except that the seat frame 1 is provided with small holes 7 to reduce the weight of the seat frame 1. Further, the seat frame 1 shown in FIG. 5 is formed to have only one bent piece 5a that is cut upward from one side edge of the slit 4 when punching the frame material 3 from a single metal plate 2. , except that this one bent piece 5a and the side edge portion of the slit 4 on the opposite side of the bent piece 5a are in contact with each other, and this abutting portion is joined by welding. This example has the same configuration and effects as the example. Also in the seat frame 1 shown in FIG. 5, a large number of small holes 7 can be bored in order to reduce the weight.

As explained above, according to the seat frame of the present invention, a substantially rectangular frame material punched from a single metal plate has four slits extending from the top toward the center and both edges or one side of the frame material. It is integrally formed with a folded piece cut and raised from the edge,
In addition, the side edges of this frame material are appropriately bent, and the pairs of bent pieces at the positions where the side edge portions of the slit are in contact with each other, or the bent pieces and the side edge portions of the slit are bent. Since the joints are joined by welding, etc., a seat frame with the desired shape and sufficient strength can be obtained through simple molding, reducing the number of processing steps compared to conventional methods, improving productivity and manufacturing. Cost reduction can be achieved, and weight reduction can be achieved by punching a large number of small holes in the frame material.

[Brief explanation of the drawing]

1 to 3 schematically show an embodiment of the seat frame according to the present invention, with FIG. 1 being a perspective view showing the external appearance, FIG. 2 being a side sectional view thereof, and FIG. FIG. 4 is a perspective view showing a modification of the present invention, and FIG. 5 is a perspective view showing a modification of the frame material. In the figure, 1... seat frame, 1a... bottom,
1b...Side edge portion, 2...Metal plate material, 3...Frame material, 4...Slit, 5a, 5b...Bent piece, 7...Small hole.

Claims (1)

[Claims for Utility Model Registration] (1) Consisting of a frame material that is punched into a substantially square shape from a single metal plate and has slits cut from each top toward the center; A seat frame characterized in that each side edge portion is formed by bending at the bottom side of the slit, and the side edge portions of the slit are joined at positions where they contact each other. (2) Registration of a utility model characterized in that the frame material has bent pieces cut and raised at mutually opposing positions on both sides of the slit, and the pair of bent pieces are joined to each other. A seat frame according to claim 1. (3) The frame material has a bent piece cut and raised on one edge of the slit, and the bent piece and the side edge portion of the slit on the opposite side of the bent piece are joined. A seat frame according to claim 1 of the utility model registration claim.