JP2746522B2 - 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 in which a stay extending downward from the headrest body is swingably supported on a frame side in a seatback in order to adjust the front-rear position of the headrest body. .

[0002]

2. Description of the Related Art As a conventional headrest device, for example, there is one as shown in FIG.

[0003] That is, the lower end of the stay 2 is swingably supported by the seat back 1, and a long hole 4 for inserting the stay 2 upward through the skin member 3 of the seat back 1 is formed.
The headrest body 5 is mounted on the upper end of the stay 2. When the headrest main body 5 is moved in the front-rear direction, the intermediate portion of the stay 2 reciprocates in the long hole 4 for insertion.

[0004]

However, in such a conventional headrest apparatus, the opening of the stay insertion long hole 4 of the skin member 3 from the front of the seat to the base end of the stay 2 and its swinging mechanism. There was a problem that the internal structure could be seen and the appearance was impaired. Also, when the user puts his hand on the seat back during a walk-in operation or the like, a finger may accidentally enter the long hole 4 for stay insertion, especially when the finger enters the long hole 4 deeply. There was a case where it was sandwiched by metal structures, and there was a problem in safety.

The present invention has been made in view of such a conventional problem, and provides a headrest device which is good in appearance and excellent in safety by concealing a long hole opening for stay insertion. It is intended to be.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the gist of the present invention is to provide a stay extending downward from the headrest body (20) in order to adjust the front-rear position of the headrest body (20). In a headrest device in which (21) is swingably supported on a frame (11) side in a seat back (10), a support panel (51) is fixedly provided on a front side of the frame (11). A first guide groove (52) through which the stay (21) is vertically guided is formed in the support panel (51),
A movable panel (60) slidable in both directions in a state of overlapping with the support panel (51) is mounted on the front side or the back side of the support panel (51), and the movable panel (60) is mounted on the movable panel (60). Extending in a direction obliquely intersecting with the first guide groove (52), and the intersection (70) with the first guide groove (52) relatively moves as the movable panel (60) slides in both sides. Forming a second guide groove (61) that moves up and down,
The stay (21) is fitted to the intersection (70) of the first guide groove (52) and the second guide groove (61), and the support panel (51) that appears above and below the stay (21) is fitted. The opening of the first guide groove (52) is connected to the movable panel (6).
0) The headrest device is concealed around the second guide groove (61).

[0007]

When the headrest body (20) is at a predetermined front-rear position, the stay (21) supporting the headrest body (20) is provided by a support panel (51) fixed to the front side of the frame (11). The movable panel (6) mounted so as to overlap with one guide groove (52) and the support panel (51).
0) at the intersection (70) with the second guide groove (61).

Accordingly, the opening other than the portion where the stay (21) is located in the first guide groove (52) is
Since it is concealed by the periphery of the second guide groove (61) of the movable panel (60), the internal structure of the sheet cannot be seen from the outside through the first guide groove (52), and the first guide groove (52) There is no danger that a finger may accidentally enter inside.

When the stay (21) is swung to adjust the front / rear position of the headrest body (20), the stay (2) is adjusted.
1) moves vertically in the first guide groove (52) of the support panel (51). When the stay (21) moves up and down, the stay (21) presses the periphery of the second guide groove (61) of the movable panel (60) obliquely intersecting with the first guide groove (52) extending in the vertical direction. To engage.

At this time, since the movable panel (60) is slidable in both directions with respect to the supporting panel (51), the movable panel (60) moves with the stay (21) up and down. (21) and slides to the left or right. As a result, the first (21) in which the stay (21) is fitted.
The intersection (70) of the guide groove (52) and the second guide groove (61) relatively moves up and down together with the stay (21).

Accordingly, the stay (21) in the first guide groove (52) is not impaired in the up and down movement, and regardless of the stop position of the stay (21) in the first guide groove (52). In the first guide groove (52), the opening other than the portion where the stay (21) is located can be concealed.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of the present invention. As shown in FIGS. 1 and 4, the headrest body 20 is supported on the seatback 10 via a stay 21 extending upward, and the seatback 10 has a back frame 11 therein. The housing 50 is attached to the back frame 11.
The headrest body 2 is fixed to the housing 50.
A drive unit 40 for adjusting the vertical position of the zero and moving it forward is provided. The back frame 11 and the skin member 12 that covers the pad are provided with a stay insertion slot 13 for passing the stay 21 therethrough.

The housing 50 is formed in a box shape, is fixed to the back frame 11 with its opening facing rearward, and the front portion of the housing 50 located on the front side of the back frame 11 guides and holds the stay 21. As a supporting panel 51. This support panel 51
Has a first guide groove 52 that is curved rearward on the upper surface side, extends vertically from the upper surface side to the lower surface, and through which the stay is guided.

On the front side of the supporting panel 51, a movable panel 60 slidable on both sides in a state of overlapping with the supporting panel 51 is mounted. As shown in FIGS. 2 and 3, the movable panel 60 includes a thin plate member and a supporting panel 51.
It is processed so as to conform to the surface shape. The movable panel 60 may be mounted on the support panel 51 as long as it can be mounted so as to overlap with the support panel 51. If there is no structural obstacle such as interference with other members, the movable panel 60 may be mounted on the back side of the support panel 51. The movable panel 60 may be colored in a similar color to the skin member 12, for example.

As shown in FIG. 1, movable panel guides 51a, which are slidably fitted to the upper and lower edges of the movable panel 60, are provided at the four upper and lower corners of the support panel 51, respectively.
51a are provided. This movable panel guide 5
1 is formed by cutting and raising the four corners of the supporting panel 51 in a hook shape, but the present invention is not limited to this mode. For example, another hook member or the like may be attached.

As shown in FIG. 2, the movable panel 60 includes
A second guide groove extending in a direction obliquely intersecting with the first guide groove 52, and an intersection 70 with the first guide groove 52 relatively moving up and down as the movable panel 60 slides in both sides; 61 are formed.

More specifically, the second guide groove 61 in the present embodiment is approximately four times smaller than the first guide groove 52.
When the center position of the movable panel 60 matches the center position of the support panel 51, the substantially central portions of the second guide groove 61 and the first guide groove 52 cross each other. Is set to FIG. 2 shows a state in which the center position of the movable panel 60 is located slightly to the left of the center position of the support panel 51 in the figure.

As shown in FIG. 3, a guide groove 54 for a pivot and a guide groove 55 for a cam follower shaft extending in the vertical direction are formed in a side wall 53 of the housing 50 bent from both sides of the support panel 51. It is formed so as to line up. A pivot 31 is provided so as to extend over both side wall portions 53, and the lower slider 3 made of resin is provided at both ends of the pivot 31.
The pivot 31 is fitted to the pivot guide groove 54 via the lower slider 37 so as to be vertically movable.

A relay member 32 is fixed to both ends of the pivot 31. A stay holder 33 is fixed to the relay member 32, and a cam follower shaft 35 which is located below the pivot 31 and has its shaft directed sideways. Is fixed, and the cam follower shaft 3
5 is fitted with a resin upper slider 38. Similarly, the cam follower shaft 35 is fitted to the cam follower guide groove 55 via the upper slider 38 so as to be vertically movable.

At the upper end of the guide groove 55 for the cam follower, a forwardly extending guide groove 55a for guiding the cam follower shaft 35 is extended. The terminal end portion 56 of the guide groove 55a for forward tilting is a groove that bends forward and extends in the horizontal direction. The headrest main body 2 is supported by the coil spring 34 wound around the pivot 31 via the stay 21.
0 is urged forward.

The drive motor 41 and its speed reduction mechanism 42 are screwed to the support panel 51 of the housing 50. A screw member 43 extends downward from the speed reduction mechanism 42, and a nut member 44 is screwed to the screw member 43. A locking recess 45 is formed on the front surface of the nut member 44, and the center of the pivot 31 in both sides is rotatably fitted in the locking recess 45.
The anti-separation plate 46 is attached to the pivot 31 so as not to come off.
And is screwed to the nut member 44. The driving motor 41 and the speed reduction mechanism 42
0.

Next, the operation will be described. In FIG. 3, when the pivot 31 is moved up in the guide groove 54 for the pivot by the drive unit 40, the cam follower shaft 35 is moved up in the guide groove 55 for the cam follower shaft, and the cam follower shaft 35 is eventually moved forward in the guide groove 55a. When it moves inside, the stay 21 swings forward and the headrest body 20 falls forward.

When the headrest body 20 is at a predetermined front-rear position by the adjustment by the driving unit 40,
The stay 21 has a first guide groove 52 of a support panel 51 located on the front side of the frame 11 and a second guide groove 6 of a movable panel 60 mounted to overlap the support panel 51.
1 at the intersection 70.

Thus, as shown in FIG. 4, the opening other than the portion where the stay 21 is located in the first guide groove 52 is concealed by the periphery of the second guide groove 61 of the movable panel 60. Therefore, the interior structure of the seat cannot be seen from the outside of the seat through the first guide groove 52, so that the appearance can be improved. Further, when a hand is applied to the seat back 10 by a walk-in operation or the like, the skin member 12 long holes 13
Therefore, the safety is improved without the possibility that a finger may accidentally enter the inside of the first guide groove 52.

When the drive unit 40 is operated to swing the stay 21 in order to adjust the front-rear position of the headrest body 20, the stay 21 moves up and down in the first guide groove 52 of the support panel 51. I do. When the stay 21 moves up and down, the stay 21 engages with the first guide groove 52 extending in the vertical direction by pressing against the peripheral edge of the second guide groove 61 of the movable panel 60 obliquely crossing the first guide groove 52.

More specifically, when the stay 21 moves upward in the first guide groove 52, the stay 21
The movable panel 60 having the second guide groove 61 slides leftward in FIG. 2 as the stay 21 moves upwardly while engaging with the upper peripheral edge 61a of the second guide groove 61 shown in FIG. . Conversely, when the stay 21 moves downward in the first guide groove 52, the stay 21 presses while engaging with the lower peripheral edge 61b of the second guide groove 61 shown in FIG. With the movement to the movable panel 60,
It slides rightward in FIG.

As described above, the movable panel 60 is
Is pushed by the stay 21 and slides in one of the right and left directions, and as a result, the intersection of the first guide groove 52 and the second guide groove 61 in which the stay 21 is fitted. 70 moves up and down relatively with the stay 21.

Accordingly, the stay 21 does not impair the vertical movement of the stay 21 in the first guide groove 52, and regardless of the stop position of the stay 21 in the first guide groove 52,
At any time, the opening other than the portion where the stay 21 is located in the first guide groove 52 can be concealed.

[0029]

According to the headrest device of the present invention, the stay is fitted at the intersection of the first guide groove of the support panel and the second guide groove of the movable panel slidably mounted on the support panel. Since the movable panel slides in both directions along with the swing of the stay and the crossing point moves up and down together with the stay, the opening other than the part where the stay is located in the first guide groove is the movable panel. Concealed by the periphery of the second guide groove, the internal structure of the sheet cannot be seen from the outside of the sheet through the first guide groove, and the appearance can be improved. Thus, there is no danger of the finger getting in, and safety can be improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a headrest device showing one embodiment of the present invention.

FIG. 2 is a perspective view of a main part of a headrest device showing one embodiment of the present invention.

FIG. 3 is an exploded perspective view of a drive unit of the headrest device showing one embodiment of the present invention.

FIG. 4 is a perspective view of a vehicle seat provided with a headrest device according to an embodiment of the present invention.

FIG. 5 is a perspective view of a vehicle seat provided with a headrest device showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Seat back 20 ... Headrest main body 21 ... Stay 40 ... Driving part 50 ... Housing 51 ... Support panel 52 ... 1st guide groove 60 ... Movable panel 61 ... 2nd guide groove 70 ... Crossing point

Claims (1)

(57) [Claims] 1. A stay extending downward from the headrest body to adjust the front / rear position of the headrest body.
A headrest device swingably supported on a frame side in a seatback, wherein a support panel is fixedly mounted on a front side of the frame, and the stay is inserted into the support panel so as to be vertically guided. One guide groove is formed, and a movable panel slidable in both directions in a state of overlapping with the support panel is mounted on a front side or a back side of the support panel, and the first guide is provided on the movable panel. A second guide groove extending obliquely to the groove and forming a second guide groove in which an intersection with the first guide groove relatively moves up and down as the movable panel slides in both sides; It is assumed that the stay is fitted at the intersection with the second guide groove, and the opening of the first guide groove of the supporting panel that appears above and below the stay is concealed around the second guide groove of the movable panel. Characteristic head Rest apparatus.