JPH0349558Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to a movable head rest provided on a vehicle seat, and particularly relates to a head rest that allows for horizontal and horizontal movable adjustment in addition to longitudinal tilt adjustment.

《Prior art》 The size and specific shape of the headrest provided on a vehicle seat are generally set according to the seat equipped, and the headrest can be adjusted fore and aft to adjust to the physique of the seater. It is adapted to provide optimal head retention.

<<Problems to be Solved by the Invention>> By the way, during normal use of the head rest, good head retention can be ensured simply by adjusting the forward and backward tilting of the head rest as described above. However, for example, when using virtual eyes, it may be more relaxing to lean your body diagonally toward the vehicle seat, and when you adopt this relaxing posture, your head moves away from the headrest and becomes more relaxed. In some cases, the headrest that has been installed may not be able to be used effectively. In addition, bench-type rear seats usually have two headrests at fixed positions on the left and right, but when three people are seated on this rear seat, the occupants on both sides must be positioned relative to the headrest on the door side. As a result, there is a problem in that optimum head retention performance cannot be obtained.

The present invention was devised in view of the above circumstances, and an object of the present invention is to provide a movable head rest that can further improve head holding performance by being adjustable to move left and right in addition to tilting back and forth.

<Means for Solving the Problems> In other words, the present invention provides elasticity to the upper horizontal axis of the headrest stay by a holding bracket provided within the headrest frame and having one end biased by a leaf spring. The headrest is a movable headrest whose tilt is adjusted by being actively clamped against the spring pressure of the leaf spring, and the headrest has a movable rail provided in the left-right direction of the headrest frame, and a movable headrest that slides on the movable rail. The present invention is characterized in that it comprises a sliding device comprising a fixed rail that is engageable and holds the holding bracket, and a locking means that locks the fixed rail at a suitable sliding position.

<<Operation>> The head rest can be moved left and right by the slide device, and can also be tilted back and forth against the spring pressure of the leaf spring. As a result, the relative position of the head rest with respect to the vehicle seat can be freely adjusted, and optimum head retention performance can always be obtained.

<<Example>> Hereinafter, the movable headrest according to the present invention will be explained in detail with reference to the example shown in FIGS. 1 to 5.

1 to 3 show a first embodiment of the present invention. As shown in FIG. 1, the movable headrest of this embodiment consists of two hollow headrest frames 1a and 1b, and frames 1a and 1b.
A cushioning pad 2 and a skin 3 surrounding the outer periphery of the
, a slide device 5 having a locking means 4 provided in the frame 1a, a holding bracket 6 provided on a fixed rail 52 of the slide device 5,
Headrest stay 7 supported by bracket 6
and a plate spring 8 that biases one end 61a of the bracket 6.

Further, the slide device 5 includes a movable rail 5 which is attached by welding or the like to the left-right direction of the inner wall of the frame 1a, which has a large cutout at the lower part, as shown in FIG.
1 and a fixed rail 52 which is slidably engaged with a movable rail 51, and the sliding movement of the fixed rail 52 can be appropriately locked by the locking means 4. The locking means 4 is a movable rail 5
1 and the fixed rail 52, the steel ball 41 is positioned and provided within the upper bent portion 51a of the movable rail 51, and the steel ball 41 is fixed on the upper bent portion 52a of the fixed rail 52. Locking plate 4
It consists of 2. The locking plate 42 is made of a plate spring material formed into a continuous wave shape, and is elastically locked as the steel ball 41 rides over the corrugated ridges of the locking plate 42. Furthermore, a lubricant 53 made of a resin sheet or plate is attached to the inner surface of the movable rail 51 to improve the sliding of the fixed rail 52 and to prevent abnormal noise from occurring.

Further, the headrest stay 7 supported by the fixed rail 52 has a substantially inverted U shape, and the horizontal shaft portion 7
A pair of leg portions 73 are joined to both ends of 1 with a mounting plate 72 interposed therebetween. This headrest stay 7 is attached to a holding bracket 6 attached to a fixed rail 52.
The horizontal shaft portion 71 is held by the plate spring 8 which is inserted into the upper bent portion 52a of the fixed rail 52.
It is elastically supported by. In other words, the bracket 6 has a substantially Ω-shaped cross section with a curved central portion,
As shown in FIG. 1, the lower end 61b of the bracket 6 is locked in the lower bent part 52b of the fixed rail 52, and the upper end 61a is locked in the upper bent part 5 of the fixed rail 52.
It is loosely fitted into 2a and is elastically locked by a plate spring 8 which is bent into a roughly wave shape. Therefore, the horizontal shaft portion 71 is supported by the inner wall of the fixed rail 52 and the bracket 6 due to the spring pressure of the leaf spring 8, and the movable headrest can be held at a predetermined inclination angle position with respect to the leg portions 73. The horizontal shaft portion 71 is also provided with a pair of substantially fan-shaped stoppers 9. For example, when the movable headrest is tilted forward against the spring pressure of the plate spring 8 as shown by the arrow in FIG. Then, one end of the stopper 9 is locked to the inner wall of the fixed rail 52 to restrict the tilting range.

In addition, in this way, the horizontal shaft portion 71 can be attached to the fixed rail 5.
As shown in FIG. 3, the movable headrest mounted on the rear seat 10, etc., is moved in the left-right direction against the elastic force of the locking means 4.
When three people are seated, the head can be moved in the direction of the arrow to adjust to the optimal head holding position.

FIG. 4 shows a second embodiment of the present invention.
This is an example in which the above-mentioned movable head rest can be slid in an arc shape. In addition, in this figure, the same parts as in FIGS. 1 to 3 are given the same reference numerals, and redundant explanation will be omitted.

The movable headrest of the second embodiment is mainly applied to a case where the headrest is attached to a rear seat and the shape of the headrest is set in an arc to provide a sense of unity with the body side. In such a case, as shown in the figure, the headrest frame 1a, the movable rail 51,
The fixed rail 52 and the locking plate 42 are each formed into an arc with a predetermined curvature, and the horizontal shaft portion 71 of the headrest stay 7, the leaf spring 8, the holding bracket 6, etc. are also made to match the curvature. Thereby, the movable headrest slides in an arc shape with respect to the headrest stay 7, and the position can be adjusted without impairing the sense of unity with the body side.

FIG. 5 shows a third embodiment of the present invention.
This is an example in which the locking means provided in the slide device is changed. In this figure as well, parts that are the same as those in FIGS. 1 to 3 are given the same reference numerals and redundant explanations will be omitted.

The locking means 400 of this embodiment includes a plurality of grooves 402 provided at regular intervals on the upper bent portion 52a of the fixed rail 52, a locking piece 401 that engages with and disengages from one of the grooves 402, and a locking piece 401 that rotates. It is generally composed of an operating knob 403 that moves.

The locking piece 401 has a bent portion at one end that is connected to the locking claw 4.
01a, and the bent portion at the other end is a standing portion 401b.
It is becoming. The locking piece 401 is located on the upper bent portion 51a of the movable rail 51, and is rotatably supported by a pin 404, and the claw 401 extends from the notch 405 provided in the upper bent portion 51a.
1a is inserted and removed to engage and disengage from the groove 402.
The pin 404 is provided with a torsion coil spring 4 for pressing the claw 401a of the locking piece 401 into the notch 405 and engaging the groove 402 of the movable rail 52.
07 is provided. Further, the standing portion 401b
a shaft 406 connected to an operation knob 403;
are in contact with each other, and by pushing the operation knob 403 in the direction of the arrow against the biasing pressure of the spring 407, the locking piece 401 can be rotated and the lock between the pawl 401a and the groove 402 can be released. It's summery.

Further, the fixed rail 52 of the same embodiment is provided with a coil spring 54 whose both ends are engaged with one end of the fixed rail 52 and the inner side of the frame 1a. This coil spring 54 is attached to the fixed rail 52.
This is to return the operation knob 403 to its normal position (usually at the center of the movable rail 51).
When the lock is released in synchronization with the fixed rail 52
is configured to automatically slide back into its normal position. Therefore, the left and right sliding operation of the movable headrest becomes easy and the usability is improved. As described above, the movable headrest of the present invention can be modified in various ways and is of course not limited to the above embodiments.

<<Effects of the invention>> As explained above, according to the present invention, the headrest can be tilted back and forth, and can be moved left and right using the slide device, so that the relative position of the headrest with respect to the vehicle seat can be adjusted according to the posture of the occupant. It can be freely adjusted according to the Therefore, the adjustment range is expanded compared to the conventional head rest, thereby further improving the head holding ability of the head rest.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a movable headrest shown as a first embodiment of the present invention, FIG. 2 is an exploded perspective view showing the main parts of the headrest, and FIG. 3 is a schematic perspective view showing left and right movement of the headrest. FIG. 4 is an exploded perspective view of essential parts of a movable headrest shown as a second embodiment of the present invention, and FIG. 5 is an exploded perspective view of essential parts of a headrest shown as a third embodiment of the invention. 1a, 1b...Head rest frame, 4, 4
00...Lock means, 5...Slide device, 6...
...Holding bracket, 7... Head rest stay, 8... Leaf spring, 51... Movable rail, 52...
... Fixed rail, 71 ... Upper horizontal axis.

Claims (1)

[Scope of utility model registration request] The upper horizontal shaft of the headrest stay is elastically clamped by a holding bracket provided in the headrest frame and whose one end is biased by a leaf spring to resist the spring pressure of the leaf spring. The head rest is a movable head rest whose tilt is adjusted, and the head rest includes a movable rail provided in the left-right direction of the head rest frame, and a fixed rail that is slidably engaged with the movable rail and holds the holding bracket. A movable headrest characterized in that it is equipped with a slide device comprising a locking means for locking the fixed rail at an appropriate sliding position.