JPH10236202A - Vehicular headrest device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and freely mount/demount a vehicular headrest device on/ from a seat back by arranging a movable support which is held on the tip of a stay so as to be freely locked/released and can be fitted to a support member, between the stay and the support member. SOLUTION: Both leg parts 51 of a stay 5 are respectively inserted into through holes 31a of support parts 31, and a movable support 7 is installed on the tips of both leg parts 51 of its inserted stay 5 so as to bridge both leg parts 51. A pair of guide parts 74 to slidably guide it through a clearance passage 24 of a base bracket, are formed on this movable support 7. A pair of vertical walls 73 are formed around both through holes 71 in these guide parts 74, and these vertical walls 73 and fitting parts 31b arranged under both support part 31 of a rotary member 3, are formed so as to be fittable to each other. The movable support 7 can be held by the support parts 31 by fitting of the fitting parts 31b and the vertical walls 73. Therefore, a vehicular headrest device can be easily and freely mounted on and demounted from a seat back.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle headrest device capable of removing a headrest from a seat back.

[0002]

2. Description of the Related Art Conventionally, as this type of headrest device, one disclosed in Japanese Utility Model Publication No. 2-46755 is known. This has a headrest detachably supported on a seat back via a stay, and a support member provided on the seat back and having a fixed support through which the stay is inserted.

In this conventional device, a lock mechanism is arranged between the stay and the support member, and by operating the lock mechanism, the stay can be removed from the support member, whereby the headrest can be moved to the seat back. On the other hand, it was supposed to be removable.

[0004]

By the way, in the above-mentioned conventional apparatus, the stay is supported by the fixed support so as to be vertically movable with respect to the supporting member. For this reason, this fixed support becomes very large over the vertical movement range of the headrest to support the stay.

To solve this problem, Japanese Patent Laid-Open Publication No. 6-269
As shown in Japanese Patent Publication No. 334, a movable support that can be vertically supported by a support member may be provided at the tip of the stay. However, in this case, when removing the headrest from the seat back, the stay must also be removed from the movable support. For this reason, the position of the movable support is not determined, and it is very difficult to attach the movable support to the stay when attaching the headrest to the seat back again.

Accordingly, an object of the present invention is to provide a vehicle headrest device which is easily detachable from a seat back and has a movable support.

[0007]

The technical means taken in the present invention to solve the above technical problem is provided between a stay and a support member and is held at the tip of the stay so as to be freely detachable. And a movable support that can be fitted to the support member.

According to this technical means, when the headrest is removed from the seat back, the movable support is detached from the stay, but is held at a predetermined position by fitting with the support member. Therefore, when the headrest is attached to the seat back again, the movable support can be easily held on the stay.

More preferably, the support member includes a guide member attached to the seat back, and a rotating member rotatably supported by the guide member and fitted with the movable support. good.

[0010] More preferably, the movable support comprises:
It shall be supported by the guide member so as to be vertically movable,
And good.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 3, a headrest device 1 includes a seat back 8 (shown in FIG. 8).
A base bracket 2 disposed inside the upper part of the base member, a rotating member 3 rotatably supported by the base bracket 2, and a stay 5 slidably supported by the rotating member 3 and supporting a headrest 4 at an upper end.

The base bracket 2 is formed by bending a single plate, and forms a pair of side walls 22 that are bent and extended from both side edges of a front wall 21 that is parallel to the seating surface of the seat back 8. Further, a pair of flange-shaped rear walls 23 are formed in parallel with the front wall 21 that is bent and extended from the rear edges of the both side walls 22, respectively. Gap passages 24 extending in the vertical direction are formed between the adjacent side walls 22. The base bracket 2 is fixed to the frame of the seat back 8 with screws at the rear walls 23. The side walls 22 and the rear walls 23 of the base bracket 2 have extending portions 22a and 23a extending above the upper edge of the front wall 21 so as to be continuous from above the gap passages 24, respectively. The rotating member 3 is rotatably supported by the extending portion 22a of the wall 22. Further, the extending portions 23a of both rear side walls 23 are
Has an arc shape centered on the center of rotation of. Furthermore,
A stopper surface 23b that is bent inward is formed at the tip of the extension portion 23a, and the stopper surface 23b can contact the rotating member 3 that has rotated. The rotation of the rotating member 3 is restricted by the contact between the stopper surface 23b and the rotating member 3, and the headrest 4
Are stored in a storage position B (shown in FIG. 8) described later.

The rotating member 3 has a through hole 3 extending in the longitudinal direction.
It comprises a pair of support portions 31 which are cylindrical with 1a and are arranged parallel to one another. The pair of support portions 31 are connected to the support portion 31 by a shaft portion 32 integrally formed so as to extend from the support portion 31. Further, both support portions 31 are provided with circular projecting shafts 3 arranged coaxially with the shaft portion 32 and projecting in opposite directions to each other.
The two protruding shafts 33 are inserted into holes formed in the extending portions 22 a of the side walls 22 of the base bracket 2. Thereby, the rotating member 3
Are rotatably supported by the base bracket 2. In the rotating member 3 configured as described above, the support portion 31
The support portion 31 is disposed so as to face the extension portion 23 a of the rear wall 23 of the base bracket 2, and extends between the support portion 31 and the extension portion 23 a when the rotation member 3 rotates. The space is provided so as not to interfere with the portion 23a. Around the shaft portion 32 of the rotating member 3, there is disposed a spring 6 having one end locked to the shaft portion 32 and the other end locked to the front wall 21 of the base bracket 2. Is constantly biased by the biasing force of the spring 6 in the counterclockwise direction shown in FIG. The rotating member 3 is made of resin, and the two support portions 31, the shaft portion 32, and the both protruding shafts 33 are integrally formed by molding.

The stay 5 for supporting the headrest 4 has a pair of leg portions 51. The two leg portions 51 are inserted into the through holes 31a of the support portion 31, respectively. A stopper piece 7 is attached to a tip of both leg portions 51 of the stay 5 inserted into the support portion 31 so as to bridge the two leg portions 51. As shown in FIG. 4, the stopper piece 7 has a gap passage 24 of the base bracket 2.
, A pair of guide portions 74 that are slidably guided by the front wall 21 and the rear wall 23 are formed. The two guide portions 74 are formed with through holes 71 into which the two leg portions 51 of the stay 5 are inserted, respectively.
Are fixed with a pair of elastically deformable snaps 72 each having an engaging portion 72a which crosses each other. Engagement notches 51a are formed at the ends of the two leg portions 51 of the stay 5, respectively. The mating portion 72a and the engagement notch 51a are engaged.
Thereby, the stopper piece 7 is attached to the distal ends of the two leg portions 51. In the guide portion of the stopper piece 7, a pair of vertical walls 73 opposed to each other with the through hole 71 interposed therebetween has both through holes 71.
And a lower end of both support portions 31 of the rotating member 3 is formed with a fitting portion 31b which is located between the pair of vertical walls 73 of the stopper piece 7 and can be fitted to the vertical wall 73. ing. Then, the stopper piece 7 is
The support portion 31 can be held by fitting the b with the vertical wall 73.

Next, the operation will be described.

FIG. 3 shows the positional relationship between the base bracket 2, the rotating member 3, and the stay 5 when the headrest 4 is at the use position A (shown in FIG. 8). In this state, the rotating member 3
Are arranged so that the through-holes 31a thereof extend in the vertical direction and communicate with the gap passage 24 of the base bracket 2. The stay 5 has a leg portion 51 having the through-hole 31a of the rotating member 3.
And is vertically movably supported by the rotating member 3 and is vertically movably supported by the base bracket 2 via the stopper piece 7. At this time, the rotating member 3
Is guided by the rear wall 23 of the base bracket 2 via the stopper piece 7, so that the spring 6
The rotation by the urging force is regulated.

In this state, when the headrest 4 is moved up to the maximum with respect to the seat back 8, the stay 5 also moves up with respect to the base bracket 2 and the rotating member 3 as shown in FIG. 7 and the fitting portion 31b of the rotating member 3 are fitted to each other so that the stopper piece 7
Is held by the rotating member 3. As a result, the guide portion 74 of the stopper piece 7 comes out of the gap passage 24 of the base bracket 2 and is disposed so as to face the extending portion 23a, so that the stay 5 is supported only by the rotating member 3, and the rotation is performed. The member 3 becomes rotatable with respect to the base bracket 2. As a result, as shown in FIG. 6, the rotating member 3 is rotated by the urging force of the spring 6 until it comes into contact with the stopper surface 23b, and the headrest 4 is
To the storage position B. At this time, the through hole 31a of the rotating member 3 faces the extending portion 23a of the base bracket 2.

In this state, as shown in FIG. 7, when the headrest 4 is pulled, the engaging portion 72a of the snap 72 of the stopper piece 7 is elastically deformed, and the engaging portion 72a and the leg portion 51 of the stay 5 are deformed. Engagement notch 51
The engagement with a is released. Thereby, the stay 5 is removed from the rotating member 3 and the headrest 5 is removed from the seat back 8. At this time, the rotating member 3 is held at the position where the headrest 5 is set to the storage position B by receiving the urging force of the spring 6 and the stopper piece 7
Is rotated by the fitting between the vertical wall 73 and the fitting portion 31b.
It is still held.

When attaching the headrest 4 to the seat back 8 again from the state shown in FIG. 7, the stay 5 may be inserted through the through hole 31a of the rotating member 3 held at the storage position B. At this time, the tip of the leg portion 51 of the stay 5 inserted into the rotating member 3 comes into contact with the extending portion 23a of the base bracket 2 so that the amount of insertion into the rotating member 3 is restricted, and the leg portion 51 protrudes from the rotating member 3. There is no such thing. Further, by inserting the stay 5 into the rotating member 3, the engagement notch 51 a of the leg 51 and the engagement portion 7 of the snap 72 are formed.
2a are engaged again.

Thereafter, the headrest 3 is moved to the seat back 8.
By rotating the headrest 3 backward with respect to the seatback 8 and rotating the headrest 3 downward with respect to the seat back 8 against the urging force of the spring 6,
Becomes

The storage position B of the headrest 4 may be set behind the seat back 8.

In this case, the extending portion 23a of the base bracket 2 extends from the front wall 21.

[0023]

According to the present invention, the movable support is detachably held at the tip of the stay, and the stay is supported on the supporting member so as to be vertically movable via the movable support. The size can be reduced to the limit, and a compact support structure can be obtained. Also, since the movable support can be freely fitted to the support member and can be held on the support member, the movable support can be held at a predetermined position even when the stay is pulled out from the movable support, and the headrest can be held against the seat back. Desorption can be facilitated.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vehicle headrest device according to the present invention.

FIG. 2 is a front view showing a support structure of the vehicle headrest device according to the present invention in a left half of FIG. 1;

FIG. 3 is a sectional view taken along line CC of FIG. 2;

FIG. 4 is a sectional view taken along line DD of FIG. 2;

FIG. 5 is a cross-sectional view corresponding to FIG. 3, showing the operation of the vehicle headrest device according to the present invention.

FIG. 6 is a cross-sectional view corresponding to FIG. 3, showing an operation of the vehicle headrest device according to the present invention.

FIG. 7 is a cross-sectional view corresponding to FIG. 3, showing an operation of the vehicle headrest device according to the present invention.

FIG. 8 is a perspective view of a seat back on which the vehicle headrest device according to the present invention is mounted.

[Explanation of symbols]

 2 Base bracket (support member) 3 Rotating member (support member) 4 Headrest 5 Stay 7 Stopper piece (movable support) 8 Seat back

Claims (3)

[Claims] 1. A headrest device for a vehicle, comprising: a headrest detachably supported on a seat back via a stay; and a support member attached to the seat back and through which the stay is inserted. A headrest device for a vehicle, comprising a movable support disposed between the support member and a movable support that is detachably held at a tip of the stay and can be fitted to the support member. 2. The vehicle according to claim 1, wherein the support member includes a guide member attached to the seat back, and a rotation member rotatably supported by the guide member and fitted with the movable support. Headrest device. 3. The headrest device for a vehicle according to claim 2, wherein the movable support is supported by the guide member so as to be vertically movable.