JPH0240836Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a headrest attachment mechanism for an automobile seat back frame.

<Prior art> As shown in FIG. 4, this type of conventional mounting mechanism has two brackets 3 for mounting the headrest arranged side by side on the top side 2 of the seat frame 1, and two brackets 3 for mounting the headrest. The terminal 3a is bent backward and a cover plate 4 covering the headrest stay is fixed to the terminal, and the brackets 3, 3
The top side 2 of the seat frame, the bracket ends 3a, 3a, and the cover plate 4 are welded together by spot welding means.

This type of mounting mechanism requires the cover plate 4 to be made of a steel plate, and the bracket terminal 3a is welded to the cover plate 4, which results in a large overall weight and requires a lot of work, so the manufacturing price can be reduced. It was difficult to do so.

For this reason, recently, as shown in FIG. 5, a pair of brackets 3, 3 are provided on the top side 2 of the seat frame 1, and a covering made of synthetic resin is installed at the bending ends 3a, 3a of these brackets. A mounting mechanism has been proposed that fixes the plate 5, and in this mounting mechanism, the terminals 3a, 3a of the bracket
An engagement hole is formed in the hole, and the engagement projection on the cover plate 5 side is engaged with the engagement hole, and the lower edge 5a of the cover plate 5 is engaged with the cover wire 6, so that the cover plate 5 can be attached to the seat. It is attached to frame 1.

<Problems to be solved by the invention> As described above, in the mounting mechanism of the type in which the cover plate 5 made of synthetic resin is attached to the end of the bracket 3, the fourth
Compared to the mounting mechanism of the type shown in the figure, it has the advantage of reducing weight and the number of spot welding processes, but on the other hand, since it is necessary to injection mold the cover plate 5, the price of the cover plate 5 is reduced. There is a problem in that the number of assembly steps cannot be significantly reduced because the cost becomes high and additional labor is required to assemble the cover plate 5.

<Means for Solving the Problems> As shown in FIG. 1, the mounting mechanism of the present invention fixes a pair of brackets 20, 20 to the top side 11 of the seat frame 10 by, for example, welding means, and This bracket 20 has a top portion 21 fixed to the seat frame 10, and a top piece portion 2.
1, an intermediate piece 22 made to face the top piece 21 below the seat frame 10 and to be located within the frame of the seat frame 10, and this intermediate piece 22 and the top piece 21
and the intermediate piece 22.
The intermediate piece 2 is placed on the rear side, that is, on the side opposite to the seat surface.
The length of the cover piece 24 is set so that the lower end 24a of the cover piece 24 is the same as the stay 31 when the headrest 30 is at the lowest position. The top piece 21 and the middle piece 22 are provided with spaces such as through holes 21a and 22a through which the stay 31 can be inserted.

<Function> In the case of this mounting mechanism, by inserting the stay 31 of the head rest 30 into the through holes 21a and 22a, the head rest 30 can be mounted to the seat frame 10, and the stay 31 of the head rest 30 can be covered. Covering and protection can be provided by the piece 24.

<Embodiment> In FIG. 1, 10 is a seat frame, and a pair of brackets 20, 20 are spot-welded to the top side 11.

The bracket 20 is formed integrally with the top piece 21 by a top piece 21 which is superposed and welded to the upper surface of the top side 11, and a connecting piece 23 hanging down from the front end side of this top piece 21. The frame includes an intermediate piece 22 parallel to the top piece 21 and a cover piece 24 extending downwardly from the rear end of the intermediate piece 22. The lower end 24a is made to be located below the lower end 31a of the stay 31 at the lowest position of the head rest 30, which will be described later.

Top piece 21 and intermediate piece 22 of the bracket 20
There are through holes 21a and 22 through which the stay 31 is inserted.
a is provided, and by inserting the stay 31 into the through holes 21a and 22a, the head rest 30
is assembled into the seat frame 10 as shown in FIG. The headrest 30 is attached to the bracket 2.
The seat is configured to be supported at a desired height by a headrest support 25 attached to the top piece 21 of the seat frame 10, and a backrest pad 41 of a backrest 40 is arranged on the front side of the seat frame 10, and A back pad 42 is provided on the side, and the rear side of the skin 43 is hooked with a cover wire 12 fixed to the seat frame 10 via a hog ring 44.

In the above, the bracket 20 usually has a straight cover piece 24 on the upper part of the shape as shown in FIG.
However, in some cases, as shown in FIG. 3A, the end of the cover piece 24 is
The front cover surface 24b is formed by folding it back into a shape,
Alternatively, as shown in FIG. 3B, a through hole 2 is provided below the intermediate piece 22.
6a may be formed, and such a configuration can be arbitrarily selected.

<Effect of the invention> The mounting mechanism of the present invention provides the cover piece 24 on the bracket 20 in this way, and thereby the headrest 3
Since it covers and protects the stay 31 of 0,
Compared to conventional mechanisms of this type, there is no need to install a separate cover plate, and therefore the number of parts and installation processes can be omitted by the cover plate, which has the effect of reducing manufacturing costs, as well as reducing the weight of the cover plate. This has the effect of reducing the weight of the mounting mechanism accordingly.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the proposed mounting mechanism;
Fig. 2 is a vertical cross-sectional side view showing the main parts of an automobile seat using the lifting mechanism, Fig. 3 is a side view showing another embodiment of the bracket used in the lifting mechanism, Fig. 4,
FIG. 5 is a perspective view showing a conventional mounting mechanism. In the figure, 10 is a seat frame, 20 is a bracket, 21 is a top piece, 22 is an intermediate piece, 23 is a connecting piece, 24 is a cover piece, 30 is a headrest, 31
indicates a stay.

Claims (1)

[Claims for Utility Model Registration] (1) An appropriate number of brackets are provided on the top side of the seat frame, and the brackets consist of a top piece that is superimposed and fixed to the top side of the seat frame, and a top piece that is fixed to the top side of the seat frame. an intermediate piece provided below and formed to face the top piece; a connecting piece that connects the intermediate piece and the top piece; and a connecting piece extending downwardly from the rear end of the intermediate piece. The structure includes a cover piece, and a space formed in the top piece and the middle piece so that the stay of the head rest is inserted, and the length of the cover piece is such that the lower end of the cover piece A headrest mounting mechanism for an automobile seat back frame that is set to be below the bottom end of the stay at its lowest position. (2) Claim 1 of the utility model registration in which the top piece, the intermediate piece, and the connecting piece are continuous in a shape, and the cover piece hangs down in a straight line from the rear end side of the intermediate piece. Headrest mounting mechanism for automobile seat back frames.