JPS6036111Y2 - headrest - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of headrests, and in particular, in order to improve the safety of vehicle occupants, it is possible to easily adjust the position of the headrest according to the physique of the occupant. The purpose is to provide a lightweight, low-cost product with a simple structure.

Conventionally, this type of headrest has had drawbacks such as a complicated structure, a large adjustment mechanism, increased weight, and a large number of parts, resulting in high cost.

This invention eliminates these drawbacks of conventional headrests,
Moreover, it eliminates the need for an operating knob for adjustment, etc., and its configuration will be explained with reference to the embodiment shown in FIGS. 1 to 3.

The threaded tips of two stays 3 and 4, which are vertically movably incorporated into the upper end of the seat back, are bent and arranged so as to face each other, and the threaded portion 31 of the stay 3 is attached to a washer 8.
, through the hole 11 of the upper rod 1, the hole 52 of the stopper plate 5, the disc spring hold washer 10, and the disc spring 7.7, and are tightened to a predetermined torque with the locking nut 9, and similarly the threaded part of the stay 4. 41 is the washer 8', the hole 12 of the upper rod 1, and the hole 6 of the stopper plate 6.
2. Disc spring hold washer 10', disc spring? ',7'
It is inserted into the hole and tightened to a predetermined torque with a locking nut 9'.

Both ends of the upper rod are flat so that the holes 11 and 12 provided in the flat parts of both ends of the upper rod 1 bent into a mouth shape come into contact with the holes 52 of the stopper plate 5 and the holes 62 of the stopper plate 6, respectively. The stopper plates 5 and 6 are integrally welded to each other.

It should be noted that the means for integrating the parts is not limited to welding, but it should be noted that it is sufficient to firmly fix the parts.

Further, the stopper rod 2 is inserted into each long hole 51, 61 of the stopper plate 5.6, and both ends thereof are connected to the welded part 2.
1.21', each stay is firmly fixed to the stays 3 and 4 by welding.

A resin cover 13 is fitted to the angle adjustment mechanism as described above, and the cushion member 1 is inserted so as to include the resin cover 13.
4 is made of urethane foam or the like.

The cushion member 14 includes disc springs 7.7 and disc springs 7', 7.
The tilting angle can be adjusted arbitrarily from the upright position to the forward position as shown in Figure 2 against the friction of '.
By tightening the locking nuts 9, 9' with a predetermined torque, a moderate friction braking effect suitable for angle adjustment is provided.

Stopper rod 2 welded to the two left and right stays 3 and 4
serves not only for reinforcement but also for regulating the angle of inclination of the cushion member 14.

That is, as shown by the solid line in Fig. 2, the stopper plate 5.6
A stopper rod 2 is attached to one end of each of the elongated holes 51 and 61.
At the position where the stopper rod 2 hits the other end of the elongated holes 51 and 61, the upper rod 1 is prevented from moving backward any further, and at the position shown by the dotted line in Figure 2, the upper rod 1 is restricted from moving forward any further. has been done.

Since the headrest according to the present invention has the above-described configuration, it has a simple structure, has no protruding parts, has a simple and compact adjustment mechanism, and has the advantage of having a small number of parts, being lightweight, and being able to be provided at a low cost.

[Brief explanation of the drawing]

FIG. 1 is a front view of the headrest of the present invention, FIG. 2 is a left side view of FIG. 1, and FIG. 3 is an exploded perspective view of the components. 1... Upper rod, 11... Hole,
12... Hole, 2... Stopper rod, 21, 21'... Welded part, 3... Stay, 31... Screw Part, 4... Stay 41... Screw part, 5... Stopper plate, 51, 61... Long hole, 6...
Stopper plate, 52, 62...hole, 7,
7'...Disc spring, 8.8'...Washer, 9,9'...Double locking nut, 10,1
0'... Disc spring hold washer, 13...
... Resin cover 14 ... Cushion member.

Claims (3)

[Scope of utility model registration request] (1) An upper rod in which the threaded tips of two stays that are built into the upper end of the seat back so as to be movable up and down are bent so as to face each other, and the threaded parts are bent into a mouth shape through a washer. , the hole of the stopper plate, the disc spring hold washer, and the disc spring, and tighten it to a constant torque with a locking nut, and attach both ends of the stopper rod inserted through the long hole of the stopper plate to the stay. Headrest made by welding. (2) Practical use in which the flat portions at both ends of the upper rod and the stopper plate are integrally fixed so that the holes provided in the flat portions at both ends of the upper rod bent into a mouth shape contact the holes in the stopper plate. A headrest according to claim 1 of the patent registration claim. (3) The angle can be adjusted against the friction of the disc spring.
The headrest according to claim 1, which is a registered utility model, is configured such that the inclination angle can be regulated by a stopper plate through which the stopper rod can be inserted into the elongated hole.