JP2541430B2 - Vehicle seat headrest device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headrest device for a vehicle seat, and more particularly to a retractable headrest device in which the headrest is provided at the upper end of the seatback so as to be able to fall and stand in the front-rear direction of the seat.

[0002]

2. Description of the Related Art Generally, a vehicle seat or the like keeps a seated person stable while the vehicle is running, provides a proper sitting comfort, and prevents fatigue even if the user sits for a long time. It is desired to reduce it as much as possible, and therefore various support devices are attached to each part of the seat. Most commonly, such a support device is a headrest attached to the upper end of the seatback so as to support the back side of the head of the seated person.

By the way, various types of headrests have been known in the prior art, for example, a seat
A front-rear position adjusting type in which a headrest supported by a headrest stay projecting from the upper end of the tuck is provided so as to be movable in the front-rear direction of the seat is also known. With such a movable headrest structure, the feeling of the seated person can be further improved.

Further, in recent years, in a vehicle seat of this kind, a headrest used for a front seat of the vehicle seat is constructed so as to be laid down or erected in the front-rear direction and seated on a rear seat when the seat is laid down forward. Expanding the occupant's forward vision,
A configuration that can ensure that state is, for example,
It has been already proposed by the Japanese Patent Publication No. 44594.

To briefly explain this, in this conventional headrest device, the headrest is moved forward in the longitudinal direction,
It is provided with front and rear block bodies that are divided into two parts, and the lower end portion of the rear block body is rotatably supported on the upper end portion of the headrest stay that is erected on the upper end portion of the seat back. The upper end of the front block is rotatably supported on the upper end, and the lower end of the front block is locked by a lock mechanism provided at the upper end of the headrest stay, so that both blocks are locked. It was configured such that the bodies can be erected on the upper end portion of the seat back in a state of being combined with each other to exert the function as a headrest.

For example, in order to widen the field of view of the rear occupant in the front of the seat, the lock mechanism is disengaged, the front block body is once rotated upward, and then the front block body is moved together with the rear block body on the stay. The front and rear block bodies are laid down on the front side of the seat by tilting forward around the shaft support portion, and the operation opposite to the above is performed to bring the block upright.

[0007]

However, in the headrest device having the above-described conventional structure, not only is it troublesome to operate the front and rear block bodies in an upright state or to lay them down forward of the seat, but also to lay them down. In this state, the height of the headrest can be reduced by only about 1/2 of the standard height in the standing state.

This is because, in the above-mentioned conventional apparatus, the headrest is divided into a front portion and a rear portion in the vertical direction,
This is because the rear block body is stacked on the upper end portion of the seat back and is tilted forward even when the rear block body is tilted, and the thickness of the rear block body remains at the upper end portion of the seat back.

Further, in the above-mentioned conventional headrest device, since the headrest is divided into front and rear parts in the longitudinal direction, there is a problem that the entire circumference is divided along the longitudinal direction of the headrest, and the appearance is not good. However, it is desired to take some measures that can solve these problems.

The present invention has been made in view of the above circumstances, and it is possible to make the height of the headrest as low as possible in the lying state, and to expand the occupant's front view to the rear seats as much as possible. It is an object of the present invention to obtain a headrest device for a vehicle seat, which is extremely easy to perform an upright operation or a fall operation at the upper end of the seatback of the headrest.

[0011]

In a vehicle seat headrest device according to the present invention, a headrest that is provided at an upper end portion of a seatback and supports a back surface of a seated person's head in an upright state is divided into an upper part and a lower part. An upper end portion of a headrest stay that is composed of a base member disposed at the upper end portion of the back and a headrest main body that is erected by being crowned on the base member and that is erected at the upper end portion of the seatback. Is connected to the seat front end side in the base member, and the other end of the link lever whose one end is connected to the rotary shaft rotatably supported by the connecting portion is seat rear end side in the headrest body. The headrest main body is connected to the headrest through a rotatable shaft support and the headrest main body is capped on the base member. It is provided with a work capable of locking means.

[0012]

According to the present invention, when the locking means is unlocked in the standing headrest and the headrest body is pressed forward of the seat, the headrest body is
The headrest is tilted forward with respect to the base member via the link lever, and the headrest is tilted. Further, the headrest main body is lifted and rotated rearward of the seat to be crowned on the base member, and the locking means is brought into the locked state, whereby the standing state of the headrest is obtained.

[0013]

1 to 3 show an embodiment of a vehicle seat headrest device according to the present invention. In these drawings, a retractable headrest designated by reference numeral 10 is apparent from FIGS. As described above, the base member 11 disposed at the upper end of the seat back 1 and the back surface of the head of the seated person are supported when the base member 11 is assembled so as to be capped on the base member 11 and is in an upright state. The headrest body 12 is divided into upper and lower parts.

Here, as apparent from FIGS. 1 to 3, the base member 11 is composed of a base plate 13 attached to the upper end of the seat back 1 and a base cover 14 assembled to the upper portion thereof. There is. The base cover 14 is composed of a cover frame 15 as shown in FIG. 3 and a pad portion 16 with a skin material formed so as to cover the upper portion thereof.

The headrest body 12 is shown in FIG.
As shown in FIG. 3, the headrest frame 17 is opened at the lower side, the pad material 18 covering the surface of the headrest frame 17, and a skin material (not shown) are included.

Now, according to the present invention, in the headrest 10 which is divided into upper and lower parts as described above,
The upper ends of the headrest stays 20, 20 which are erected from the upper end of the seat back 1 are connected to the seat front end side in the base member 11, and one end is connected to a rotating shaft 22 rotatably supported by the connecting part 21. Linked link lever 23,
The other end of 23 is connected to the seat rear end side in the headrest main body 12 via a rotatable shaft support portion 24, and the headrest main body 12 is crowned on the base member 11 so that the headrest 10 stands up. As a locking means that can lock the two members 11 and 12 in an integrated manner when they become unusable, a lock arm 25 and a lock lever 26 that can selectively lock the lock arm 25 by an external operation are provided. I am trying.

In FIG. 3 and the like, reference numerals 30 and 30 denote brackets fixedly mounted on the seat front end side of the base cover 14 of the base member 11. The headrest stays are attached to the shaft portions 30a and 30a integral with the brackets 30 and 30, respectively. 20, 20
Upper end portions 20a, 20 curved and extended forward of the seat
a is connected. Here, the shaft portions 30a, 30a
Is configured to have a different radial dimension from the rotary shaft 22,
The rotary shaft 22 is rotatably supported.

The rotary shaft 22 has a link lever 23,
One end of 23 is connected, and these link levers 23,
The other end of 23 penetrates through the notches 32, 32 formed in the cover frame 15 to face the inside of the headrest body 12, and the brackets 33, 33 fixed to the seat rear end side wall portion of the headrest frame 17. Is connected to a rotary shaft 34 that is pivotally supported.

As shown in FIGS. 1 to 3, the lock arm 25 extends toward the base member 11 with one end fixed to the seat front end side inner wall of the headrest frame 17 in the headrest body 12. The lock groove 25a on the front end side is configured to be lock-engageable with a part of a lock lever 26 pivotably supported on the base plate 13 of the base member 11.

An outer end of the lock lever 26 projects outward from a window portion 36 formed in a side portion of the base cover 15, and the lock groove of the lock arm 25 is oscillated in a seat back-and-forth direction. 25a is engaged to be in a locked state or a non-engaged state to be in an unlocked state. The lock lever 26 may be normally biased by an appropriate biasing means so as to maintain the locked state. Reference numeral 37 in FIG. 3 is a notch formed in the base cover 15 for allowing the lock arm 25 to face the inside of the base member 11.

According to the above construction, the lock arm 2 is provided in the headrest 10 in the upright state as shown in FIG.
When the lock state of the lock lever 26 with respect to 5 is released by an external operation and the headrest body 12 is pressed forward of the seat, the headrest body 12 is linked to the base member 11 as shown in FIG. Lever 2
The headrest 10 is tilted to the front side of the seat through 3, 23, and the headrest 10 is tilted. On the contrary, when the headrest body 12 is lifted and rotated to the rear of the seat to be crowned on the base member 11, and further the lock lever 26 is engaged with the lock groove 25a of the lock arm 25 to be in the locked state. The upright state of the headrest 10 as shown in FIG. 1 is obtained.

With such a structure, in the state shown in FIG. 1 in which the headrest 10 is erected, the function as a headrest for supporting the back of the head of the seated person on the seat can be exerted, and FIG. When the headrest main body 12 is laid down on the front side of the seat as shown in FIG. 3, only the height of the base member 11 becomes the headrest height at the upper end of the seat back 1, and the height can be made as low as possible. The front view of the rear occupant can be maximized and secured.

Further, the base member 11 and the headrest main body 12 which constitute the retractable headrest 10 that can be erected and laid down are brought into a laid state or a standing state in front of the seat by an unlocking operation and a rotation of the link lever 26. It is extremely easy to perform and has excellent operability.

The present invention is not limited to the structure of the above-described embodiment, and the shape, structure, etc. of each part including the headrest 10 and the seat back 1 can be freely modified or changed as necessary. . For example, the structure of the base member 11 and the frames 13, 14; 17 constituting the headrest main body 12 and the pad members 16, 18 including the skin material, the externally operable locking means for locking the headrest main body 12 in the upright state with respect to the base member 11. As such, various modifications are conceivable.

[0025]

As described above, according to the headrest device for a vehicle seat according to the present invention, the headrest provided on the upper end portion of the seatback for supporting the back surface of the head of the seated person in an upright state can be moved upward and downward. The base member is divided into two parts and is arranged at the upper end of the seat back, and a headrest main body that is placed upright by being crowned on the base member, and is erected from the upper end of the seat back. The upper end portion of the headrest stay that is connected to the seat front end side in the base member, the other end of the link lever whose one end is connected to the rotating shaft that is rotatably supported by this connecting portion,
An external operation in which the headrest main body is connected to the rear end side of the seat via a rotatable shaft supporting portion, and the headrest main body is capped on the base member and both members are integrally locked in a standing state. Since possible locking means is provided, various excellent effects listed below can be obtained despite the simple structure.

(1) It is extremely preferable that the base member and the headrest body, which constitute a retractable headrest that can be erected and laid down, be brought into a laid state or a standing state in front of the seat by an unlocking operation and a rotation of the link lever. Easy to do. (2) Only the height of the base member becomes the headrest height at the upper end of the seat back when the headrest body is in the lying down state, and the height can be made as low as possible, thereby expanding the front view of the rear occupant. Is possible. (3) The headrest can be easily laid down and stood up by operating the locking means externally or pressing or lifting the headrest body, which is excellent in operability.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of an essential part of a headrest device for a vehicle seat according to an embodiment of the present invention in a standing state.

FIG. 2 is an operation explanatory view when the headrest device shown in FIG. 1 is in a lying state.

FIG. 3 is a schematic exploded perspective view showing a main part configuration of a headrest device of the present invention.

[Explanation of symbols]

 1 Seat back of vehicle seat 10 Retractable headrest 11 Base member 12 Headrest body 13 Base plate 14 Base cover 15 Cover frame 17 Headrest frame 20 Headrest stay 21 Connecting part 22 Rotating shaft 23 Link lever 24 Shaft supporting part 25 Lock arm (locking means) ) 25a lock groove 26 lock lever (locking means)

Claims (1)

(57) [Claims] 1. A headrest device for a vehicle seat, comprising a headrest provided at an upper end portion of a seatback for supporting a back surface of a head of a seated person in a standing state, wherein the headrest is provided at an upper end portion of the seatback. A member and a headrest main body that is assembled to be crowned on the base member and supports the back of the head of the seated person, are divided into an upper part and a lower part, and are erected from the upper end of the seat back. The upper end of the headrest stay is connected to the seat front end side in the base member, and the other end of the link lever, which is connected at one end to the rotary shaft rotatably supported by this connecting part, is connected inside the headrest body. When the headrest body is capped on the base member and the headrest is in an upright state, it is connected to the rear end of the seat via a rotatable shaft support. A headrest device for a vehicle seat, comprising an externally operable locking means capable of integrally locking both members.