JP2594598Y2 - 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, and more particularly to a headrest device in which a headrest can fall and stand in the front-back direction of a seatback.

[0002]

2. Description of the Related Art A headrest device of this type is provided, for example, in a seatback of a front seat, and when there is no occupant in the seat, the headrest is tilted down as necessary to secure a wide field of view for the occupant of the rear seat. is there.

[0003] By the way, as one example of this type of headrest apparatus, as shown in Japanese Utility Model Publication No. 3-44594, a headrest is mounted on the top side of a seat back so that its base end is rotatable. A first block body (rear side block body) that is biased in a direction in which it pivots in the front-back direction and rises, and one end is rotatably assembled to the distal end of the first block body. A second block body (a front block body) which is moved forward and backward with respect to the entire surface of the first block body and is biased by a spring in a direction away from the entire surface of the first block body; A lock mechanism is provided between the opposing sides of the two block members to maintain the superposed state of the two block members, and the locked state of the lock mechanism is externally operated. Those with headrest apparatus provided with unlocking means for dividing are known.

In the headrest device having such a configuration, as shown in FIG. 6, the headrest can be formed by overlapping and holding the two blocks 31 and 32 which are the components of the headrest by the action of the lock mechanism. The headrest thus configured can be held upright at the top of the seat back SB (see FIG. 6A). In the headrest held in the upright state, the entire lock state of the two block bodies 31 and 32 is released by operating the lock release means, and the second block body 32 is moved to the first block by the restoring force of the spring. Body 3
The first block body 31 is rotated at the distal end to separate from the entire surface of the first block body 31 (see FIG. 6B). In such a release state, the two block bodies 31, 32 can be integrally and pivotally moved forward about the base end of the first block body 31 (see FIG. 6 (c)). A wide field of view can be secured for the occupant of the side seat.

[0005]

However, in the headrest device described above, the second block (32: front block) rotates at the tip of the first block (31: rear block). At that time, since the portion A of the second block body 32 comes into contact with and rubs against the corner portion B of the first block body 31, traces of rubbing remain on the skin material of the portion B of the first block body 32, When the two blocks of the headrest are overlapped and returned to the standing state, there is a problem that the appearance is impaired.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a vehicle seat headrest device having a headrest which is mounted on a top portion of a seat back and stands upright to support a rear side of a seated person's head. A first block body having a base end mounted on the top side of the seat back so as to be rotatable in a forward direction from a standing state; and a rear end face overlapping the front end face of the first block body. And a second block body assembled so as to be slidable upward along the surface.

[0007]

[Operation and effect of the invention] In the headrest device of the invention constructed as described above, when the headrest is used or when the headrest is not in the way, both blocks constituting the headrest are overlapped at both end surfaces. 1 and is held upright by the seat back SB (FIG. 1).
(A)). Then, in the headrest maintained in such an upright state, by sliding the second block body upward with respect to the first block body, the end faces of both block bodies are separated from each other (see FIG. 1B). ). When the two blocks are released in the separated state in this manner, the two blocks can be integrally rotated forward about the base end of the first block (see FIG. 1C). Thereby, the occupant of the seat on the rear side can secure a wide field of view.

As described above, in the headrest device of the present invention, the separation between the second block and the first block is performed by the second block.
Of the headrest device, the rubbed marks formed on the skin material of the portion B of the first block body (rear block body) in the conventional headrest device are not left, and both headrests are not moved. The appearance when the block body is returned to the state of polymerization retention is not impaired.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 to 5 show a headrest device according to the present invention. As shown in FIG. 1, this headrest device is assembled to a seat back SB of a front seat of a vehicle, and falls down forward with respect to the seat back SB as required to secure a wide forward view for a occupant of a rear seat. Things.

The headrest 10 is composed of a pair of front and rear block bodies 11, 12, and the front block body 11 is composed of a cushion body 11a in which an elastic member is covered with an outer cover and a support plate 11b for supporting the cushion body 11a. The cushion body 1 formed of the same member as the block body 12
2a and a support plate 12b supporting the same. In such a headrest 10, the rear block body 12 corresponds to the first block body of the present invention, and the front block body 11 corresponds to the second block body of the present invention.

The rear block body 12 includes a seat back SB.
The base plate 14 attached to the foot of the inverted U-shaped stay 13 inserted into the
At the base end portion, a hinge pin 15 is used so as to be rotatable forward of the standing state. At the substantially center of the support plate 12b, there is a clip 16 which can be resiliently fitted to the top portion 13a of the stay 13 when the rear block body 12 is rotated forward, thereby locking the state.
Are fixed with rivets 17. Further support plate 1
A slide guide 19 that penetrates two slide shafts 18 attached to the front block body 11 is screwed with screws 20 on both upper sides of 2b.

The two ends of each of the two slide shafts 18 are connected to a lower bracket 21 and an upper bracket 22 which are fixed to the left and right sides inside a support plate 11b which is a component of the front block body 11. It is fixed to. Two bow-shaped lock springs 23 are attached to the center of the support plate 11b of the front block body 11 on both the left and right sides using rivets 24 at the center. And both block bodies 11, 1
When the headrest 10 is maintained in the upright state due to the superposition of the two, the two slide guides 19 are located at the upper ends of the two slide shafts 18 and are in contact with the upper end lock portions 23a of the arcuate lock springs 23. The front block 11 is held so as not to slide upward with respect to the rear block 12.

The lock mechanism provided on the opposing portions of the two block bodies 11 and 12 includes a pair of left and right lock pins 25 provided on the base plate 14 to which the rear block body 12 is attached, and a pair of left and right lock pins provided on the front block body 11. And the hole 21a of the lower bracket 21. Both blocks 1
When the locks 1 and 12 are in the overlapped state, the lock pin 25 is
1a.

In the headrest device constructed as described above, when the headrest is used or when the headrest is not in the way, the two blocks 11, 12 are overlapped as shown in FIG. Constitutes the headrest 10 and stands upright. In this state, the lock pin 25 is
a, the lock mechanism is locked,
The polymerization of 1, 12 is maintained. Further, in this embodiment, the slide guide 19 is at the upper end of the slide shaft 18 and is engaged with the upper end lock portion 23a of the lock spring 23, so that the front block body 11 is attached to the rear block body 12 downward. The effect of preventing the lock mechanism from being disengaged is also provided because of the force.

The headrest 1 in such a polymerization state
0, first, lock pin 25 and hole 21a
Release the lock mechanism. This release is performed by sliding the front block body 11 upward, and locking the upper end lock portion 23a of the lock spring 23 with the slide guide 1.
9 is disengaged. Then, the front block body 11 is further slid upward to the state shown in FIG. In this state (FIG. 3), the slide guide 19 is at the lower end of the slide shaft 18 and is resiliently engaged with the lower end lock portion 23b of the lock spring 23, so that this state is maintained.

Subsequently, the headrest 10 in the state shown in FIG. 3 integrates the two blocks 11 and 12 integrally with each other at a hinge pin 15 where the support plate 12b of the rear block 12 is rotatably assembled to the base plate 14. By rotating the seat back forward, the seat back SB can fall down as shown in FIG. At this time, the clip 16 attached near the center of the support plate 12b snaps into the top 13a of the stay 13 and can maintain this state. Thereby, the occupant of the seat on the rear side can secure a wide field of view.

In the headrest device constructed as described above, the front block 11 is separated from the rear block 12 by sliding the front block 11, so that a part of the rear block in the conventional headrest device. There is no trace of rubbing as formed on the skin material of B, and the appearance when the two block bodies 11 and 12 of the headrest are returned to the state of being overlapped and held is not impaired.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram illustrating the operation of the headrest device according to the present invention.

FIG. 2 is a sectional view of the headrest device according to the embodiment of the present invention in a usable state.

FIG. 3 is a cross-sectional view of a state where the front block body shown in FIG. 2 is slid upward.

4 is a cross-sectional view of a state where the headrest in the state shown in FIG. 3 is laid down.

FIG. 5 is an exploded perspective view of the headrest device shown in FIGS. 2 to 4;

FIG. 6 is a conceptual diagram for explaining the operation of a conventional headrest device.

[Explanation of symbols]

10 headrest, 11 front block, 11b
Support plate, 12: Rear block body, 12b: Support plate, 13: Stay, 14: Base plate, 15 ...
Hinge pin, 16: clip, 18: slide shaft, 19: slide guide, 21: lower bracket, 2
1a: hole, 22: upper bracket, 23: lock spring, 23a: upper lock portion, 23b: lower lock portion, 25: lock pin.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A47C 7/38 B60N 2/48

Claims (1)

(57) [Scope of request for utility model registration] 1. A headrest device for a vehicle seat having a headrest which is mounted on a top portion of a seat back and stands up to support a rear side of a seated person's head, wherein the headrest is in an upright state on the top side of the seat back. A first block body having a base end portion rotatably mounted in a forward direction from the first block body, and a rear end surface overlapping the front end surface of the first block body, and sliding upward along the both end surfaces. A headrest device for a vehicle seat, comprising: a second block body assembled as possible.