JP2595688Y2 - Headrest device for vehicle seat - 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.

[0002]

2. Description of the Related Art As one type of a headrest device for a vehicle seat, as shown in Japanese Utility Model Publication No. 2-47872, a headrest located at the top of a seatback is assembled so as to be able to fall down in the front-rear direction. There is a headrest device. The headrest device is arranged in a seat back of a rear seat to increase the rear view of the driver, or is arranged in a seat back of a front passenger seat to increase the side view of the driver, or Is proposed to increase the forward view of the occupant.

[0003]

In the headrest device of the type in which the headrest rotates in the front-rear direction as described above, the structure of the device itself and the assembly structure of the seatback to the back frame are complicated.
It is not possible to adopt a simple means of changing only the headrest included in a normal headrest device to be rotatable. Therefore, an object of the present invention is to replace the headrest with a conventional one while maintaining the current state of the assembly structure with respect to the back frame as much as possible, and to achieve the same effect as a headrest device that allows the headrest to fall down so as to be able to rotate in the front-rear direction. An object of the present invention is to provide a headrest device having a function with a simple configuration and easy assembly.

[0004]

SUMMARY OF THE INVENTION According to the present invention, there is provided a vehicle seat headrest apparatus having a headrest provided on a stay standing upright on a top portion of a seatback constituting a vehicle seat. It is composed of two headrest parts divided into a headrest part and a rear headrest part, and a bracket is provided on the top of the stay, and the front headrest part is attached to the bracket at a lower position via a pair of left and right links. Said sheet
The front headrest is located at the front side of the seatback and is rotatably connected in the vertical direction so as to be located at the top of the seatback at the upper position, and the rear headrest portion is located at the lower position via a pair of left and right links. It is located at the rear side of the seat back and is located at the top of the seat back at an upper position, and is connected to the front headrest portion so as to be rotatable in the vertical direction so as to be joined to the front headrest portion, and both headrest portions are in the upper position And a lock mechanism for releasably holding the joined state when joined to each other.

[0005]

In the headrest device having the above construction, when the front and rear headrest portions constituting the headrest are in the upper position and are joined and held together by the operation of the lock mechanism, the headrest device is located on the top of the seatback. The headrest constitutes the original function of supporting the seated person's head. In this state, when the joint holding state of both headrest portions by the lock mechanism is released, both headrest portions can be rotated forward or backward, respectively, and when the front headrest portion is rotated forward, the headrest portions are lowered. It turns to be located on the front side of the seatback, and the rear headrest portion turns downward and is located behind the seatback. For this reason, the headrest is retracted downward from the top of the seatback in a state of being divided into two parts, and the headrest is located behind the seated occupant without the headrest device.
Ensure a large front or side view.

According to the headrest device, the headrest is formed as a two-part type having two front and rear headrest portions, and both headrest portions can be turned up and down on the top of the stay via the link. The headrest can be mounted on a stay constituting the conventional headrest device, since the headrest is mounted on the seatback by mounting the headrest. That is, the headrest device of the present invention can be constituted by simple means of replacing the headrest of the conventional ordinary headrest device with the headrest of the present invention, and can be disposed in the seatback.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show a headrest device according to the present invention. The headrest device includes a headrest 10, a link mechanism 20, and a support mechanism 30.

The headrest 10 is of a type in which a conventional headrest is divided into two parts, and comprises a bowl-shaped front headrest part 11 opening rearward and a bowl-shaped rear headrest part 12 opening frontward. Both headrest portions 11 and 12 are composed of bowl-shaped frame portions 11a and 12a and covering portions 11b and 12b that cover the entire outer periphery of the frame portions 11a and 12a except for the openings. In addition, a plurality of support portions 13a, 13b, 13c, 13d, 14a, 14b, and 14c for connecting links of a link mechanism 20, which will be described later, are provided on inner peripheral walls of the frame portions 11a and 12a.
14c and 14d are protrudingly provided.

The link mechanism 20 includes four front links 21.
a, 21b, 22a, 22b and four links 2 on the rear side
3a, 23b, 24a, and 24b, the front links 21a, 21b, 22a, and 22b connect the front headrest portion 11 to a stay 31 that constitutes the support mechanism 30, and the rear links 23a, 23b, and 23b. 24a, 24
b connects the rear headrest portion 12 to the stay 31.

The support mechanism 30 includes a stay 31, a bracket 32, and a lock mechanism 33. The stay 31 is the same as a stay that constitutes a conventionally known headrest device, is attached to a back frame of the seatback in the same manner as in the related art, and stands on the top of the seatback. At the top of the stay 31, a U-shaped bracket 3 is provided.
2 is fixed. The bracket 32 has two support portions 32 protruding upward at both left and right ends of a horizontal flat plate portion 32a.
b, and two support portions 32c protruding upward on both left and right sides inside the stay 31b.
It is located at the front and rear central portions of the top of the seatback while being fixed to the top of the seatback. The locking mechanism 33 includes a striker 33a and a hook 33b.
a is provided at the center of the upper portion of the frame portion 12a of the rear headrest portion 12. The striker 33a protrudes forward. The hook portion 33b is provided at the upper central portion of the frame portion 11a of the front headrest portion 11, and is located opposite the striker 33a. Thus, when the striker 33a enters the hook portion 33b, the striker 33a is held by the hook portion 33b with a predetermined force, and in this state, the holding state of the both 33a and 33b is easily released by a predetermined pulling force. .

In the support mechanism 30, the support portions 32b at both ends of the bracket 32 are connected to the inner support portions 32.
c, each support portion 32b is provided with one end of each of the front links 21a, 21b and each support portion 3b.
One end of each of the links 22a and 22b on the front side is connected to 2c so as to be vertically rotatable. Similarly, one end of each of the links 23a and 23b on the rear side is connected to each support portion 32b, and one end of each of the links 24a and 24b is connected to each support portion 32c so as to be rotatable in the vertical direction. Each link 21a, 2
1b and the other ends of the links 23a and 23b are connected to the support portions 13a and 13b and the support portions 14a and 14b of the headrest portions 11 and 12 so as to be vertically rotatable,
And each link 22a, 22b and each link 24a, 2
4b is connected to each support 13c, 13d and each support 1
4c and 14d are rotatably connected in the vertical direction.

In the headrest device configured as described above, the headrest 10 can be selectively operated to the state shown in FIGS. In the state shown in FIG. 1, both headrest portions 11 and 12 are at the upper position and are joined to each other, and are fixed to each other by the holding action of the lock mechanism 33 and are located at the top of the seatback. Therefore, in this state, the headrest 10 has the original support function, and can support the head of the seated person from behind. Also, the link mechanism 2 of the headrest device is used.
0, the links 21a, 21b, 22 on the front side
a, 22b constitute one parallel link, and the rear links 23a, 23b, 24a, 24b constitute one parallel link.

In the headrest device shown in FIG. 1, if the headrest portions 11, 12 are pulled in the front-rear direction against the lock mechanism 33 to release the holding state by the lock mechanism 33, the headrest portions 11, 12 become It can be turned downward by the action of the parallel link. For this reason, if the front headrest 11 is rotated downward, the headrest 11 moves downward and is positioned in front of the seatback, and if the rear headrest 12 is rotated downward, The headrest portion 12 moves downward and is positioned behind the seatback to be in the state shown in FIG.

In the state shown in FIG.
The seat is retracted from the top of the seatback, and in this case, a large rear view is secured for a seated occupant located in front of the seat equipped with the headrest device, and a seat positioned behind the seat is provided. A large front view is secured for the seated person, and a large side view is secured for the seated person located on the side of the seat.

Thus, in the headrest device, the headrest 10 is divided into two front and rear headrest portions 1.
As a two-split type composed of the headrests 1 and 12, both headrests 11 and 12 are mounted on the top of the stay 31 via a link so as to be rotatable in the vertical direction, and are arranged in a seatback. Thus, the headrest can be assembled to the stay that constitutes the conventional headrest device. That is, the headrest device of the present invention is constituted by a simple means of replacing the headrest of the conventional normal headrest device with the headrest of the present invention without any or almost no change in the configuration other than the headrest of the conventional normal headrest device. -Can be arranged in the backbag.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a headrest device according to an embodiment of the present invention, in which a headrest is positioned upward.

FIG. 2 is a vertical sectional side view of the headrest device in a state where a headrest is located below.

FIG. 3 is an exploded perspective view of the headrest device.

[Explanation of symbols]

10: headrest, 11, 12: headrest part, 2
0: Link mechanism, 21a, 21b, 22a, 22b: Front link, 23a, 23b, 24a, 24b: Rear link, 30: Support mechanism, 31: Stay, 32: Bracket, 33: Lock mechanism.

Claims (1)

(57) [Scope of request for utility model registration] 1. A headrest device for a vehicle seat having a headrest provided on a stay standing upright on a top portion of a seatback constituting the vehicle seat, wherein the headrest is connected to a front headrest portion and a rear headrest portion. A bracket is provided on the top of the stay, and the front headrest is located at the lower side of the bracket via a pair of left and right links and in front of the seatback. In addition, the upper part is connected to the top of the seat back so as to be rotatable in the vertical direction so as to be located on the top part thereof, and the rear headrest part is located at the lower side of the seat back at a lower position through a pair of left and right links. At the top and at the top of the seatback at the upper position so that it can be turned up and down to join the front headrest. Connected to, and the two headrest portion headrest apparatus for a vehicle seat, characterized in that a locking mechanism for releasably holding the same bonding state when joined together are located in the upper position.