JP2017165263A - Head support device for occupant in vehicle rear seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a head support device for an occupant in a vehicle rear seat adapted to a physique or the like of the occupant.SOLUTION: A head support device A for an occupant in a vehicle rear seat has an arm 20 protruding to a seat side from a sidewall (C-pillar) F in the vehicle, and a side headrest 10 arranged at a tip of the arm. The arm 20 is telescopic, and movable in a vehicle fore-and-aft direction along a rail 31. The side headrest 10 can be inclined to the arm 20 via a ball joint 25 or the like. At the non-use of the head support device, the side headrest 10 can be accommodated in a vehicle side face (dot line state in Fig.), and the side headrest 10 is made to coincide with a position of a passenger head H (actual line state in Fig.) by elongating the arm 20 by a necessary length. As above, by making the side headrest 10 easily correspond to a head position of the occupant, a stable rest (relaxation) can be obtained.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a support device that supports the head of an occupant in a vehicle rear seat.

  In a vehicle such as an automobile, an occupant of a rear seat (seat) usually rests with a headrest supported by the headrest if the headrest is provided on the seat backrest. At this time, it is considered that a side headrest is provided on the window side (pillar side) in order to allow a person to rest with his head tilted (see Patent Document 1 FIG. 3, Patent Document 2 FIG. 5 and the like).

The side headrest described in Patent Document 1 is provided with a pillow pillow that can be raised and lowered on the side surface of the rear pillar, and the pillow is placed in the rear pillar by lying down, and is positioned next to the upper portion of the seat backrest by raising the pillow. It is something to be made. For this reason, when not in use, the pillow is placed in the rear pillar so as not to disturb the driver's rear view. In use, the pillow is positioned beside the seat back and supports the side of the passenger's head. Therefore, stable rest (relaxation) is guaranteed (Patent Document 1 FIG. 3).
The side headrest described in Patent Document 2 provides a stable rest by providing a pillow made of cushions on the side of the rear pillar so as to be movable in the longitudinal direction of the vehicle, and supporting the side of the passenger's head by moving the pillow back and forth. (See Patent Document 2 Fig. 4 etc.).

Japanese Utility Model Publication No. 57-70937 Japanese Utility Model Publication No. 63-69653

Vehicle occupants vary in the position of the head when sitting on the seat depending on the physique, etc. even if they are children, adults, or adults.For example, a large occupant with a good physique should lower the seat backwards, The occupant's head is located on the rear side and the upper side, and conversely, the occupant with a small physique such as a child has the head at the time of sitting on the front side and the lower side.
In that case, the conventional side headrest only rises and does not necessarily correspond to the position of the head of the occupant, and does not correspond to the vertical position even if it moves back and forth. For this reason, the occupant associates his / her head with the position of the side headrest, and the posture may not be suitable for rest.

  An object of the present invention is to provide a vehicle rear seat occupant head support device that can easily correspond to the occupant's physique and the like under the above circumstances.

In order to achieve the above object, the present invention includes an arm projecting from a side surface in a vehicle toward a seat, and a side headrest (pillow) provided at a tip of the arm, and the arm and the side headrest are A configuration that can be stored on a side surface in the vehicle and that the arm can be expanded and contracted is adopted.
If the arm is extendable / contractable, the side headrest moves which has not been possible in the past, so that it is easy to cope with the head of the seated occupant.

In this configuration, the arm can be movable in the vehicle front-rear direction. If the seat moves back and forth, when the seat is moved back and forth, the side headrest can be used for the seat that has been moved back and forth.
As the moving means in the front-rear direction, various modes are conceivable. For example, a rail is provided on a side surface in the vehicle, the base of the arm is movably supported on the rail, and the rack attached to the rail is attached to the rack. The side headrest can be moved in the front-rear direction of the vehicle by meshing a motor-driven pinion provided at the base of the arm.
Further, if the side headrest can be moved in the lateral direction (vertical direction) with respect to the axial center of the arm, it becomes easy to correspond to the vertical position of the head.
Further, the side headrest is rotatable and tiltable with respect to the axial center of the arm, and in a vehicle having a headrest on the backrest of the seat, the headrest can be rotated and tilted in the vertical direction. be able to. If it does in this way, it will become easy to respond by the mode of a head.

  According to the present invention, the side headrest can be moved closer to or away from the seat back on which the occupant sits due to the expansion and contraction of the arm, so that the responsiveness to the position of the occupant's head is improved.

It is a principal part schematic perspective view in the vehicle which attached one Embodiment of the vehicle rear seat occupant head support device concerning this invention. The same embodiment is shown, (a) is a front view, (b) is a side view. It is a schematic perspective view of the same embodiment. The side headrest of the embodiment is shown, (a) is a partially cutaway front view in FIG. 3, (b) is a partially cut plan view. It is a use condition explanatory view of the embodiment. The other embodiment is shown, (a) is a main part perspective view, (b) is a use state plan view. It is the schematic perspective view which provided the cover in the arm in the same embodiment.

  Hereinafter, an embodiment of a head support device A for a vehicle rear seat occupant according to the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 3, the head support device A of this embodiment includes a side headrest 10 made of a cushioning material, an arm 20 that supports the side headrest 10, and the arm 20 on the right side in the vehicle. The rail mechanism 30 is supported on the surface (C pillar F) so as to be movable in the front-rear direction.

As shown in FIGS. 3 and 4, the side headrest 10 is a rectangular frame 11 provided with a cushion material 12.
The arm 20 includes a cylindrical main body 21, an advancing / retracting rod 22 inserted into the main body 21 so as to be capable of advancing / retreating, and an upper / lower rod 24 connected to the tip of the advancing / retreating rod 22 via a ball joint 23. The back surface of the side headrest 10 is supported at the tip of the upper and lower rods 24 via a ball joint 25.
The position of the advance / retreat rod 22 of the arm 20 can be fixed by screwing the fastening ring 22a at the tip at an arbitrary projecting (advancing / retreating) position.

The upper and lower rods 24 can be rotated in an arbitrary inclination direction with respect to the advance / retreat rod 22 via the ball joint 23, and a bolt (not shown) is screwed (see reference numeral 25a in FIG. 2) or the like at the rotation position. Its position is fixed. The ball joint 23 may have a structure that does not rotate.
The frame 11 of the side headrest 10 can be rotated in an arbitrary inclination direction with respect to the upper and lower rods 24 via the ball joint 25, and the position thereof is fixed by screwing a bolt 25a or the like at the rotation position. The For this reason, the side headrest 10 can change its seating surface (currently) in any direction up, down, left and right with respect to the arm 20.

A support plate 13 integral with the cushion material 12 is provided in the frame 11 of the side headrest 10 so as to be movable up and down with respect to the frame 11, and a ratchet mechanism 14 is provided between the support plate 13 and the frame 11. (See FIG. 4). The ratchet mechanism 14 includes a ratchet claw 14a, a ratchet track 14b, and a spring 14c. The ratchet claw 14a is fixed to the frame 11, the ratchet track 14b is formed on the support plate 13, and the spring 14c is formed on the frame 11 and the ratchet claw. 14a is fixed between one side and 14a. Therefore, as indicated by the chain line from the solid line in FIG. 4, by manually pushing the other of the ratchet pawls 14a, one of the ratchet pawls 14a is disengaged from the ratchet track 14b against the spring 14c, and the cushion material 12 Is moved up and down with respect to the vertical rod 24 (arm 20), and when the other of the ratchet pawls 14a is released at an arbitrary vertical movement position, one of the ratchet pawls 14a is pushed back by the spring 14c, as shown by a solid line in FIG. The ratchet pawl 14a meshes with the ratchet track 14b, and the vertical movement position of the cushion material 12 is fixed.
The ratchet mechanism 14 may not be provided on the left and right, but only one of them. In this case, a guide is provided on the other side edge of the support plate 13 (an edge where no ratchet mechanism is provided).

The rail mechanism 30 includes a rail 31 in the front-rear direction provided in the pillar F, and a moving body 32 provided movably on the rail 31. The rail 31 is a U-shaped mold member having an inverted horizontal cross section. The end surface of the upper flange 31a is a rack 33 and the lower flange 31b is an inverted U shape. The moving body 32 is a frame body having a U-shaped cross section that fits on the rail 31, and its upper flange 32 a fits into the upward groove of the upper flange 31 a of the rail 31 via the roller 34, and the tip of the lower flange 32 b is the rail. 31 is fitted in the downward groove of the lower flange 31b.
Further, the rack 33 of the rail 31 is engaged with a pinion 35 that is rotated by the motor M of the moving body 32. For this reason, the moving body 32 moves back and forth along the rail 31 by the motor M.

  A roller similar to the roller 34 may be provided on the lower flange 32b of the moving body 32. The motor M can be equipped with an electromagnetic brake so that the position can be fixed at an arbitrary moving position. Further, when the output shaft of the motor M is not orthogonal to the rack 33, the pinion 35 can have a bevel gear structure.

  A base portion of the arm 20 (main body 21) is connected to the side surface of the moving body 32 so as to be rotatable in the vertical direction. The connecting portion 26 fixes its connection angle (projection angle of the arm 20) with a bolt or the like (not shown). To get. Similarly, the connecting portion 26 can be fixed as a ball joint by a bolt or the like. Moreover, this connection part 26 is comprised with the motor with an electromagnetic brake, and while driving the motor, the arm 20 can be made into arbitrary protrusion angles, and can also be fixed in the position.

  The vehicle rear seat occupant head support device A has the above-described configuration. Next, the operation thereof will be described with reference to FIGS. 1, 2, 5, and the like. First, when not in use, as shown by a chain line in FIGS. 1, 2, and 5, it is housed in a side surface (pillar F) inside the vehicle so as not to obstruct the driver's backward confirmation. Thus, if this vehicle rear seat occupant head support device A is housed in the pillar F, in the case of a three or more row vehicle, there is no problem in getting on and off the rear seat, and the front seat occupant is moved forward. It does not interfere with the visual perception.

Next, at the time of use, as shown by the solid line in FIG. 5, the arm 20 is raised to a required angle, the advancement / retraction lever 22 is pulled out and set to a required length, and the side headrest 10 is adjusted to a required angle, Support the passenger's head H comfortably.
At this time, as shown in FIG. 6, if the headrest 50 on the upper part of the seat back S can be tilted via a ball joint 51 that can be fixed, the head H of the occupant can be supported with a better fit.

  In the above-described embodiment, the number of arms 20 is not limited to one, and may be two or more. At this time, the number of the moving bodies 32 is increased according to the number of the moving bodies 32, or the moving bodies 32 are lengthened in the rail length direction so as to support each arm 20. If the cylindrical main body 21 is sized to fit in the ceiling corner of the pillar F or the like, the main body 21 may not be rotated up and down with respect to the moving body 32. As shown in FIG. 7, the arm 20 can be provided with a cover 29. At this time, the cover 29 of the advancing / retracting rod 22 moves together with the advancing / retreating rod 22 and is accommodated in the cover 29 of the main body 21.

The arm 20 can be expanded and contracted by using a four-bar linkage mechanism, a pantograph mechanism, or the like.
Furthermore, the ball joint that forms the joint portion of the arm 20 can be rotated and stopped at an arbitrary angle by a motor with an electromagnetic brake. That is, if the robot arm mechanism is used, the side headrest 10 can be moved in a three-dimensional direction toward the headrest 50 at the front and rear, right and left and upper part of the seat back so as to correspond to an arbitrary position of the head H.

  In addition, the vehicle rear seat occupant head support device A according to the present invention can also be used in the rear seat. At this time, in a vehicle in which the headrest 50 is not provided on the seat backrest, for example, a rear seat of a sedan vehicle (see FIG. 5 of Patent Document 2), the headrest is placed on the side edge of the side headrest at the rear edge of the side headrest 10. It can be attached up and down freely so as to overlap the seating surface. Moreover, if possible, it can also be provided in the left seat (left side pillow).

A Vehicle rear seat occupant head support device F Pillar (side wall)
S seat (seat back)
DESCRIPTION OF SYMBOLS 10 Side headrest 11 Side headrest frame 12 Cushion material 13 Support plate 14 Ratchet mechanism 14a Ratchet claw 14b Ratchet track 14c Ratchet spring 20 Arm 21 Arm cylindrical body 22 Advance retraction 23, 25 Same ball joint 24 Same Upper / lower armpit 29 Arm cover 30 Rail mechanism 31 Rail 32 Moving body 33 Rack 34 Moving body roller 35 Motor-driven pinion 50 Headrest 51 at the upper part of the seat (seat) backrest 51 Ball joint of the headrest

Claims (5)

  An arm projecting from a side surface in the vehicle toward the seat; and a side headrest provided at a tip of the arm; the arm and the side headrest can be stored on a side surface in the vehicle; and the arm Is a telescopic head support device for a vehicle rear seat occupant.   A rail is provided on a side surface in the vehicle, a base portion of the arm is movably supported on the rail, a motor-driven pinion provided on the base portion of the arm is meshed with a rack attached to the rail, and the side headrest The vehicle rear seat occupant head support device according to claim 1, wherein the vehicle is movable in a longitudinal direction of the vehicle.   The head support device for a vehicle rear seat occupant according to claim 1 or 2, wherein the side headrest is movable in a lateral direction with respect to an axis of the arm.   The head support device for a vehicle rear seat occupant according to any one of claims 1 to 3, wherein the side headrest is rotatable and tiltable with respect to an axis of the arm.   The vehicle rear seat occupant head support device according to any one of claims 1 to 4, wherein the headrest can be rotated and inclined with respect to a vertical direction in a vehicle having a headrest on an upper portion of a backrest of the seat.

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