JPS5914531A - Head rest device for seat - Google Patents

Abstract

PURPOSE:To widen the visual field of a crew on a rear seat by a method wherein the head rest is permitted to be rotated about a stay extending downwardly. CONSTITUTION:A supporting member 4, supporting the stays 2L, 2R for the head rest 1, is provided and is secured to a seat back 3. The supporting member 4 is provided with a center hole 6 for rotating the stay 2R and an arcuate hole 7 for the stay 2L. A locking device 10, fixing the head rest 1 to the supporting member 4 at a normal position, is provided while the stay 2L is held by a recess 12 at the top of a locking plate 11. According to such constitution, the head rest 1 is positioned transversely on the seat back 3 and is locked by the locking device 10 under a normal using condition, while the locking device 10 is released and the head rest 1 is rotated by 90 deg. to locate it lengthwisely and widen the visual field of the crew on the rear seat when the fore seat is not being used.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a headrest device used in a front seat of a passenger car, and more particularly to a headrest device intended to widen the field of view of rear seat occupants when the front seat is not in use.

There are two types of headrest devices for the front seats of passenger cars: a fixed type that is attached to the seat back, and an adjustable type that can be adjusted in position.Of course, there have been many proposals in the past. However, the conventional device 11' is designed to improve the comfort of the front seat occupants by allowing the headrest to be adjusted up and down and at 15 points in the rear. There is no consideration given to the visibility of the occupants.If you want to expand the cocoon-oriented world of the Kari 116 Norigai when the front seats are not in use, the only option is to either remove the entire seat pack or remove the headrest from the seat pack. .

The present invention was made based on the awareness of this problem, that is, the idea that the front seat headrest obstructs the forward view of the rear seat occupants, and the present invention is based on the idea that the front seat headrest obstructs the front view of the rear seat occupant. It is characterized by being able to rotate.

By rotating the headrest 90 degrees from its normal position to make it vertically long, the rear seat occupant's field of vision can be expanded.

The invention will be explained below with reference to illustrated embodiments. The horizontally long headrest 1 has stays 2L and 2R that extend downward on its left and right sides, and the seat pack 3 of the seat is connected to the stays 2L and 2R.
, 2R. The support member 4 is fixed to a pack frame 5 within the seat pack 3.

The support member 4 includes a rotation center hole 6 into which the right stay 2R of the headrest 1 is rotatably received around its axis;
It has an arc-shaped hole 7 with a substantially quarter arc extending from the side of the rotation center hole 6 to the rear of the rotation center hole 6. Stay 2L is inserted. Therefore, the headrest 1 is on the right stay 2.
It is rotatable around R within the angular range of the arcuate hole 7, and when the left stay 2L is located at the front end of the arcuate hole 7, the headrest 1 is in its normal position horizontally elongated on the seat pack 3. On the other hand, when the headrest 1 is rotated approximately 90 degrees until the left stay 2L is located at the rear end of the arcuate hole 7, the headrest 1 becomes vertically elongated and the field of view for the rear seat occupant is expanded. Note that 8 is a stay guide provided below the rotation center hole 6, which guides the right stay 2R so as to be movable up and down.

A locking device 10 is provided on the support member 4 to fix the headrest 1 in a normal position. This locking device 1
0 holds the left stay 2L located at the front end of the circular arc hole 7 by the recess 12 at the tip of the lock plate 11, and the lock plate 11 moves forward and backward along the long hole 13.13 bored in the support member 4. I can move.

That is, a pin 14.14 having an enlarged diameter head M is inserted into the long hole 13.13 from the lower surface of the support member 4, and this pin 14.
．． 14 is fixed to the lock plate 11. This lock plate 11 is held by the tension spring 15 to the left stay 2L.
It is slidably biased in the direction of engagement. 16 is a knob for pulling the lock plate 11 against the tension spring 15.

In the present headrest arrangement having the structure described in item 1, in normal use, the headrest 1 is positioned horizontally on the seat pack 3,
It is locked in its normal position by a locking device 1o. In other words, the left stay 2L rotating at the front end of the circular arc hole 7,
Recess 1 of lock plate 11 that is biased to slide toward the stay side
1 in 2 pauses. In this way, the headrest 1 will perform its function without rotating unnecessarily.

In order to widen the front view of the rear seat occupant when the front seat is not in use, the lock plate 11 is moved back using the knob 16 to release the connection between the recess 12 and the left stay 2L, and the headrest 1 is tied around the right stay 2R 90. ' Just rotate it. Since the headrest 1 is vertically elongated as shown by the solid line in FIG. 3, the visibility of the rear seat occupant is expanded.

Note that the headrest 1 may be rotated by a spring force or may receive a rotational assisting force by a spring force.

The upper and lower positions of the headrest 1 can be secured by appropriate means, but as shown in Figs. For example, an upper door adjustment mechanism can be configured by the lock #417 and the lock device 10.

As is clear from the above description, the present invention can be implemented as long as the headrest 1 has one stay serving as the center of rotation. Further, the headrest may be held in the normal position not by the locking device but by a large rotational resistance of the headrest.

In summary, according to the present invention, the headrest can be rotated 1^ so that it is long enough to be placed on the seat pack, so the front view of the rear seat occupant is improved compared to a platform in which the headrest is in the horizontally long normal position 16. It is possible to expand the head restraint system, and it is possible to add a long-lasting performance that cannot be achieved with conventional head restraint devices.

[Brief explanation of drawings]

Figure 41 is an exploded perspective view showing an example of a headrest device for a seat related to heat cut, Figure 2 is a perspective view of the headrest in the same assembled state, and Figure 3 is a perspective view showing the rotating state of the headrest. . 1... Bed rest, 2L, 2R... Stay, 3.
... Seat pack, 4... Supporting member, 6... Rotation center hole, 7... Arc-shaped hole, 10... Locking device. Patent applicant Shiraki Metal Industry Co., Ltd. Agent Kunio Miura 179- Figure 2 Figure 3

Claims (1)

[Scope of Claims] (1) A headrest device d for a seat, in which a headrest located at the upper end of a seat pack is provided with one or more stays extending downward, and the seat pack is provided with a support member for the stays; A headrest device for a seat, characterized in that the headrest is rotatable around an upper Ffr2 stay. (2. In claim 1, the stays are provided on the left and right sides of the headrest, and the support member of the stay has a rotation center hole for one stay and a rotation center hole for the other stay. (3) In claim 1 or 2, there is provided a lock for fixing the rotatable headrest at a proper position on the seat pack. A headrest device for a seat further provided with an i.