JPH0126283Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a headrest frame for a seat of a vehicle, etc. More specifically, it is a headrest frame to which a headrest stay is attached and a pad material and a skin material are attached to the outer periphery to form a headrest. Regarding rest frames.

As shown in Fig. 1, the conventional headrest frame has a frame 1 molded from synthetic resin, and a headrest stay 2 is inserted into the frame 1 from below.
After the undercover 4 is attached to the bottom opening 3 of the frame 1 using screws 5 or the like, the undercover 4 is fixed to the bottom opening 3 of the frame 1 to maintain the strength of the frame 1.

However, the installation work of the undercover 4 is complicated and work efficiency cannot be improved, and the number of parts such as screws 5 cannot be reduced. There was a risk that the screws 1 and 4 of the undercover 4 would be damaged.

The purpose of this invention is to make the installation work easier since there is no need to fix the undercover to the bottom of the frame with screws, etc., and to improve work efficiency, and to reduce the number of parts such as screws. This will become clear from the detailed description below with reference to the drawings.

FIG. 2 schematically shows an embodiment of the headrest frame 11 according to the present invention, and this headrest frame 11 is formed in a hollow shape from a synthetic resin material, and the headrest frame 11 is formed in the hollow part. A drive mechanism 12 is inserted for moving the front and back. An example of the drive mechanism 12 includes a fixed bracket 14 fixed to the upper part of the headrest stay 13, a screw shaft 15 rotatably supported by the fixed bracket 14,
a nut member 17 that can move on the screw shaft 15 based on the operation of an operating handle 16 formed at one end of the screw shaft 15;
A movable member 18 converts the movement of the nut member 17 into a movement of the headrest frame 11 in the front and back direction.
The movable member 18 is fixed to the inner wall of the headrest frame 11 with screws 19.

As schematically shown in FIG. 3, the principle of movement of the movable member 18 in the front-rear direction is based on the central axis O of the screw shaft 15 pivotally supported on the fixed bracket 14.
A guide groove 21 is formed in the movable member 18, and when the nut member 17 moves on the screw shaft 15 in the direction of the arrow a, the movable member 18 moves in the direction of the arrow b at the side of the nut member 17. Move under pressure. Therefore, the headrest frame 11 fixed to the movable member 18 is movable in the front-back direction.

The headrest frame 11 is made up of one half 11A and the other half 11B, which are bent near the center of the upper part and can be opened and closed.
1A forms the front side of the headrest frame 11, and the other half 11B forms the rear side of the headrest frame 11, respectively. Head rest frame 11
Screw holes 23 for fixing the movable member 18 are formed in one half 11A and the other half 11B, and a screw shaft 15 is formed in one side.
A hole 25 for protruding the operating handle 16 is formed at one end of the handle. Also, as shown in Figure 4,
A long hole 26 is formed in the bottom of the headrest frame 11 so that when the headrest frame 11 is moved in the longitudinal direction with respect to the fixed bracket 14, the headrest stay 13 can be moved in the longitudinal direction relatively. ing.

A tongue piece 27 is formed protruding from the tip of one half 11A of the head rest frame 11, and a groove 28 having a substantially U-shaped cross section is formed at the tip of the other half 11B. As shown in Figure 4, a pair of elongated holes 26 at the bottom of the headrest frame 11
The tips of the one half portion 11A and the other half portion 11B are fixed by fitting between the tongue piece 27 and the groove 28. Therefore, one half 11A and the other half 11B are bent around one side, the hollow part of the headrest frame 11 is opened, and the drive mechanism 12 is inserted into the headrest frame 11. , insert the head rest stays 13 into the long holes 26, make the operating handle 16 protrude from the holes 25, fix the movable member 18 with screws 19 through the screw holes 23, and then insert the half portion 11.
By fitting the tongue piece 27 and the groove 28 of the other half part 11B, the one half part 11A and the other half part 11B of the headrest frame 11 are fixed.

The above is the configuration of an embodiment of the headrest frame according to the present invention. With this configuration, there is no need to fix the undercover to the bottom of the frame with screws, etc., and it is possible to fit the tongue piece and the groove. One half of the frame can be connected to the other half simply by fitting them together, making the installation process simple and quick, reducing the number of fixing parts such as screws, and attaching the head rest frame to the front and rear. The force applied from
Since the fitting between the tongue piece and the recessed groove is received in a linear manner, damage to the headrest frame can be further prevented compared to the case where the fitting is received in a dotted manner using screws or the like.

Note that the embodiment described above merely shows one embodiment of the present invention, and the fixed bracket 14 and movable member 18 of the drive mechanism 12 are not limited to those shown in the drawings. The configurations of the 11A and the other half 11B and the configurations of the tongue piece 27 and the groove 28 are not limited to those shown in the drawings, and it is obvious that various modifications and changes can be made without departing from the spirit of the present invention. Probably.

[Brief explanation of the drawing]

1 is an explanatory cross-sectional view showing a conventional head rest frame, FIG. 2 is an explanatory cross-sectional view schematically showing an embodiment of the head rest frame according to the present invention, and FIG.
FIG. 4 is an explanatory plan view showing the state of movement of the movable member in the front-rear direction, and FIG. 4 is an explanatory bottom view of the headrest frame. In the figure, 11...Headrest frame, 11
A, 11B... One half and the other half of the headrest frame, 12... Drive mechanism, 13... Headrest stay, 14... Fixed bracket, 18...
Movable member, 26... long hole, 27... tongue piece, 28...
...concave groove.

Claims (1)

[Scope of utility model registration request] In a hollow headrest frame made of a synthetic resin material, a headrest stay is attached and a pad material and a skin material are attached to the outer periphery to form a headrest, and the headrest frame can be opened and closed around one side. It consists of one half and the other half integrally formed, and one side of the one half and the other half is located near the center of the upper part of the headrest frame, with one half facing the front side and the other half facing the rear side. A long hole is formed at the bottom of the headrest frame so that the headrest stay can move relatively back and forth when the headrest frame is moved back and forth. A recessed groove is formed in one of the part and the other side of the other half, and the other is formed so as to be able to fit into the recessed groove, and a fixing bracket is fixed to the upper part of the headrest stay. A movable member of a drive mechanism for moving the head rest frame in the front-rear direction is attached to the fixed bracket so as to be movable in the front-rear direction, and the movable member is provided in one half and the other half of the head rest frame, respectively. A head rest frame characterized by being fixed with screws through screw holes.