JPH0238203B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a support structure for a head rest stay for a vehicle.

[Prior art]

For example, the support structure of a conventional vehicle head rest stay is shown in Figs.
(See Publication No. 46492). In the figure, 1 is the seat back frame, 2 is the frame 1
3 is a bush provided at the upper end of the bush 2.
A holder 4 is fitted into the holder 3, and a stay 5 is fitted into the holder 3, which is a head rest. The bush 2 is formed into a substantially cylindrical shape, and has locking notches 6, 6 formed at its upper end 2a. Further, the holder 3 includes a cylindrical body 8 having an insertion hole 7 for the stay 5,
The flange 9 extends from the upper end of the cylindrical body 8, and the lower end 2 of the bush 2 extends from the lower end of the cylindrical body 8.
b, the slit 30 formed below the cylindrical body 8, and the cylindrical body 8 from the lower edge of the flange 9.
ribs 11 protruding from the outer edge of the bushing 2 and press-fitted into the upper end 22a of the bushing 2;
A fourth stopper 12d is inserted into the stoppers 12a, 12b, 12c and the locking notch 6 formed in the bush 2. Also, 13 is the fifth
As shown in the figure, this is a protrusion that protrudes from the cylindrical body 8 so as to come into pressure contact with the inner surface 2c of the bush 2.

[Problems to be solved by the present invention]

However, in the case of such a conventional holder 3, the rib 11 of the cylindrical body 8 is a cylinder made of a synthetic resin material, and the amount of protrusion decreases as it approaches the bush 2, and the amount of protrusion decreases as it approaches the flange 9. Since the rib 11 has a so-called tapered shape with a large amount of
There is a possibility that it may be scraped off as shown by reference numeral 11a. In such a case, there is a possibility that the cut piece 11a cut off by the bush 2 will be caught between the bush 2 and the holder 3, causing a new problem that it will be difficult for the holder 3 to reliably fit into the bush 2. It was hot.

Therefore, according to the present invention, it is an object of the present invention to enable the holder to be inserted into the bush reliably and easily.

[Means for solving problems]

In order to achieve such an object, the present invention provides a vehicle head rest stay support structure in which a holder is fitted to a bush of a seat back frame and a head rest stay is fitted to the holder. A claw engaged with the lower end, a flange that abuts the upper end of the bush, an insertion hole for the headrest stay on the inner surface, and a rib on the outer peripheral surface that is press-fitted into the inner surface of the bush. The rib is formed such that the claw side coincides with the circumferential surface of the cylindrical body, the flange side protrudes from the circumferential surface of the cylindrical body, and a portion of the rib above the vicinity of the upper end of the bush is formed. The present invention is characterized in that a space is formed for escape of the cut piece of the rib.

〔Example〕

The present invention will be explained below based on the drawings.

FIG. 7 is a diagram showing an embodiment of the present invention. The same or equivalent parts and members as in FIGS. 1 to 6 are designated by the same reference numerals, and redundant explanations will be omitted.

First, to explain the structure, reference numeral 21 is a rib, the claw 10 side corresponds to the control surface of the cylindrical body 8, and the collar 9 side is
A space 20 for escape of the cut piece 11a of the rib 21 is formed in a portion of the rib 21 that protrudes from the circumferential surface of the cylindrical body 8 and is above the vicinity of the upper end 2a of the bush 2.

The escape space 20 must have a protrusion amount such that the most protruding part of the rib 21 comes into pressure contact with the inner surface of the bush 2 so that the rib 21 has a triangular shape.

FIG. 8 shows another embodiment of the present invention, in which the shape of the escape space 22 is removed from the most protruding part of the rib 21 to be perpendicular to the circumferential surface of the cylindrical body 8,
In addition, by making it slightly protrude from the surrounding surface,
The ribs 23 are formed in the shape of an arrow.

Next, the effect will be explained.

The protruding end portion 21a of the rib 21 which is larger than the diameter of the inner surface 2c of the bush 2 is shaved off by inserting the holder 3 into the bush 2. However, at that time, the cut piece 11a of the protruding end portion 21a
By staying within the escape spaces 20 and 22 at the base of the rib 21, the holder 3 can smoothly enter the bush 2 without getting caught in the middle.

〔effect〕

As explained above, according to this invention,
Since the configuration is such that the ribs provide escape spaces for the cut pieces of the ribs of the holder, it is possible to smoothly insert the holder into the bushing.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view of a conventional seat bag and headrest, and Figure 2 is the holder 3 of Figure 1.
and an enlarged perspective view of the bush 2, and FIG. 3 is a cross-sectional explanatory view of the bush 2 shown in FIG. 2 with the holder 3 engaged.
Figures 4 and 5 are the - lines of Figure 3, respectively;
6 is an enlarged illustration of the holder 3 shown in FIG. 3, FIG. 7 is an enlarged illustration of the rib 21 according to an embodiment of the present invention, and FIG. FIG. 3 is an enlarged explanatory view of a rib 23 according to the embodiment. 1...Seat back frame, 2...Button, 3...Holder, 4...Head rest, 5...
... Stay, 7 ... Stay insertion hole, 8 ... Cylindrical body, 9 ... Flange, 10 ... Claw, 11, 21, 23
...Rib, 20, 22...Escape space.

Claims (1)

[Claims] 1. In a vehicle headrest stay support structure in which a holder is fitted to a bush of a seat back frame and a headrest stay is fitted to the holder, the holder has a claw engaged with a lower end of the bush; The cylindrical body has a flange that abuts the upper end of the bush, an insertion hole for the head rest stay on the inner surface, and a rib on the outer circumferential surface that is press-fitted into the inner surface of the bush, and the rib is The claw side coincides with the circumferential surface of the cylindrical body, the flange side is formed so as to protrude from the circumferential surface of the cylindrical body, and a portion of the rib above the vicinity of the upper end of the bush is provided with a relief for the cut piece of the rib. A head rest stay support structure for a vehicle characterized by a space formed therein.