JPH057956Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a frame structure for a seat.

[Prior Art] In seat frame structures, particularly seat frame structures used for seat bags, a vertical frame of a pipe frame is used to connect a pipe frame formed almost like a picture frame to a frame of a seat cushion. Some have flat brackets attached from the center of both sides to the bottom. Specifically, flat brackets are overlapped from the outside of both sides of a vertical frame, and the vertical middle part of the overlapping part is joined with multiple rivets, while the upper part of the bracket is attached to the pipe frame to prevent rattling. It's welded.

[Problems to be solved by the invention] Since the upper part of the bracket is welded along the circumferential direction of the pipe material that makes up the vertical frame from the front to the rear part of the upper part of the bracket, the vertical The bending strength of the vertically intermediate portion of the frame decreases. For this reason, when a load is applied to the upper part of the vertical frame in the longitudinal direction, there is a risk that the pipe frame may bend forward or backward around the welded portion.

[Means for Solving the Problems] In a seat frame structure in which flat brackets are attached from the center of both sides of the vertical frame downwards from the center of the vertical frame in a pipe frame formed almost in a frame shape, An extending cutout is formed, and the cutout side is welded to the vertical frame.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

In Fig. 1 to Fig. 3, 1 is a pipe frame, which is formed in a substantially frame-like shape. A flat bracket 2 is provided on both sides of vertical frames 1a and 1b of the pipe frame 1 from the center toward the lower side.
Each bracket 2A,
The bracket 2A has a notch 3 extending in the vertical direction, and the notch 3 side is welded 5 to the vertical frames 1a and 1b.
The brackets 2A, 2B are formed with a mounting surface 4. The mounting surface 4 is formed as a semicircular arc in plan view that covers the outer half of the pipe material of the vertical frames 1a, 1b, and a notch 3 is formed in the circumferential center portion of the upper part of the mounting surface 4, so that the notch 3 side of the mounting surface 4 is welded 5 to the vertical frames 1a, 1b while the mounting surface 4 is overlapped with the outer halves of the vertical frames 1a, 1b. The vertical intermediate portions of the overlapping portions of the vertical frames 1a, 1b and the brackets 2A, 2B are joined by fastening members 6 such as a plurality of rivets.

According to this embodiment, since the ratio of the welded portion 5 to the pipe materials constituting the vertical frames 1a, 1b is small, it is possible to reduce the heat effect on the pipe materials during welding, and in particular, the vertical frames 1a, 1b and the brackets are Vertical frame 1a in the overlapping part with 2A and 2B,
Since the front and rear parts of the vertical frames 1b can be maintained in the same material properties as pipe materials that are hardly affected by heat, sufficient bending strength can be ensured at the vertically intermediate portions of the vertical frames 1a and 1b. Therefore, vertical frame 1
When a load is applied to the upper portions of vertical frames 1a and 1b in the longitudinal direction indicated by the arrow X, it is possible to eliminate the problem of the vertical frames 1a and 1b bending forward or backward around the welded portion 5.

[Effects of the invention] As explained above, according to the invention, the thermal influence during welding can be reduced and sufficient bending strength can be ensured at the vertical intermediate portion of the vertical frame. As a result, even if a longitudinal load is applied to the top of the vertical frame, the vertical frame can be prevented from bending, improving safety even when used as a frame for a vehicle seat bag. There are other effects.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is an enlarged view of the arrowed portion shown in FIG. 1, and FIG. 3 is a sectional view taken along the line - shown in FIG. 2. 1... Pipe frame, 1a, 1b... Vertical frame, 2A, 2B... Bracket, 3... Notch,
5...Welding.

Claims (1)

[Scope of utility model registration request] In a seat frame structure in which a plate-like bracket is attached to a pipe frame formed in a substantially frame-like shape and a flat bracket is attached from the center to the bottom of both sides of the vertical frame, a notch extending in the vertical direction is formed in the bracket, and the notch is A frame structure for a seat characterized by having the lower side welded to a vertical frame.