JP6053657B2 - Neck support device for vehicle seat - Google Patents

Description

  The present invention relates to a neck support device for a vehicle seat.

  In the technique of Patent Document 1, a variable volume medium storage is connected to a filling and discharging device and incorporated in a head cushion. While the volume increases, the front of the cushion moves forward, and as a result, the volume decreases. I am trying to return. Regardless of the size of the seated person, the headrest is always set safely and correctly automatically.

JP 11-278130 A

The headrest of the vehicle seat is provided to protect the occupant's neck from whiplash when a rear-end collision is caused from the rear of the vehicle, and the headrest itself does not give the occupant a feeling of comfort. Absent. On the other hand, it is also important for the vehicle seat including the headrest to have a structure in which the occupant's body rests and the occupant is less likely to get tired during boarding the vehicle.
Therefore, a cervical support member that supports the occupant's neck is provided on the vehicle seat, allowing the occupant to lean the neck on the cervical support member, thereby giving the occupant a comfortable feeling while riding the vehicle and reducing fatigue. It is possible.

In this case, the seat height of the vehicle occupant varies, and it is necessary to adjust the height of the neck support member in accordance with the seat height of the vehicle occupant. Further, the height of the headrest of the vehicle seat can be adjusted in accordance with the seat height of the occupant.
However, when the neck support member is provided on the vehicle seat, it is very troublesome for the occupant if the height of the neck support member must be manually adjusted in addition to the headrest height adjustment.
An object of the present invention is to provide a neck support device for a vehicle seat that can easily adjust the height of a neck support member in accordance with the seat height of an occupant.

According to one aspect of the present invention, a base portion fixed to an upper portion of a seat back of a vehicle seat, a base end side is attached to the base portion so as to be rotatable forward and backward, and a distal end side extends to the front side of the seat back. A first arm that urges the arm portion to contact the headrest side of the vehicle seat located above the seat back. And a neck support device for a vehicle seat comprising an elastic member.
According to the present invention, since the arm portion is biased so as to contact the headrest side, if the height of the headrest is adjusted, the height of the neck support member is automatically adjusted according to the height.

In this case, the cervical support member is attached to the distal end side of the arm portion so as to be rotatable forward and backward, and the cervical support member is urged in a direction opposite to the rotation direction due to its own weight. A second elastic member that elastically supports the support member may be provided.
According to the present invention, since the second elastic member elastically supports the neck support member by urging the neck support member in the direction opposite to the rotation direction due to its own weight , the occupant can place the neck on the support surface of the neck support member. In this case, the neck support member rotates so as to fit the occupant's neck, and the neck of the occupant can be supported by the neck support member.

  ADVANTAGE OF THE INVENTION According to this invention, the neck support apparatus of the vehicle seat which can adjust the height of a neck support member easily according to a passenger | crew's seat height can be provided.

FIG. 1 is a perspective view of an upper part of a vehicle seat to which a neck support device for a vehicle seat according to a first embodiment of the present invention is attached as viewed obliquely from the rear. FIG. 2 is a perspective view of the upper part of the vehicle seat to which the cervical support device for a vehicle seat according to the first embodiment of the present invention is attached as viewed obliquely from the front. FIG. 3 is an explanatory diagram for explaining the operation of the neck support device for a vehicle seat according to the first embodiment of the present invention. FIG. 4: is the perspective view which looked at the neck support apparatus of the vehicle seat concerning Embodiment 2 of this invention from diagonally back. FIG. 5: is the perspective view which looked at the vehicle seat upper part which attached the neck support apparatus of the vehicle seat concerning Embodiment 2 of this invention from diagonally back. FIG. 6 is a perspective view of the upper part of the vehicle seat, to which the neck support device for a vehicle seat according to the third embodiment of the present invention is attached, seen obliquely from the rear.

Hereinafter, a plurality of embodiments of the present invention will be described.
[Embodiment 1]
FIG. 1 is a perspective view of an upper part of a vehicle seat to which a neck support device for a vehicle seat according to a first embodiment of the present invention is attached as viewed obliquely from the rear. FIG. 2 is a perspective view of the upper part of the vehicle seat to which the cervical support device for the vehicle seat is attached as viewed obliquely from the front. In FIG. 1 and subsequent figures, directions viewed from the vehicle are illustrated as appropriate.

  A vehicle seat 100 is provided above the seat back 101 that supports the back of the occupant, and protects the occupant's neck from whipping or the like when a rear-end vehicle or the like collides from the rear of the vehicle. And a headrest 102. A headrest guide 104 is provided on the upper portion 103 of the seat back 101. Two pillars 105 extend from the lower portion 107 of the headrest 102, and the pillars 105 are respectively inserted into the two holes 106 of the headrest guide 104. Then, the height of the headrest guide 104 can be adjusted by inserting and removing the pillar 105 from the headrest guide 104 (and thus the interior of the seat back 101).

  The headrest guide 104 is provided in the upper part 103 of the seat back 101 so as to cover the periphery of the two pillars 105 and the surface between the two pillars 105. A base 2 of the neck support device 1 for a vehicle seat is fixed to a portion between the two pillars 105 of the headrest guide 104. Thereby, the base 2 is fixed to the upper part 103 of the seat back 101 of the vehicle seat 100.

  The base 2 is inserted with a shaft 3 whose longitudinal direction is the longitudinal direction of the base 2 (the left-right direction of the vehicle). The shaft 3 is supported by the base 2 so as to be rotatable forward and backward. The proximal end side 4a of the arm portion 4 is fixed to both ends of the shaft 3, respectively. Thereby, the base end side 4a of the arm part 4 is attached to the base part 2 so as to be rotatable forward and backward. And the front end side 4b of these two arm parts 4 is each extended in the front side (front direction of a vehicle) of the seat back 101. FIG.

  A neck support member (neck pillow) 11 is provided on each distal end side 4 b of the two arm portions 4. That is, the neck support member 11 is a substantially semi-cylindrical member, for example, and supports the rear of the neck of an occupant seated on the vehicle seat 100 on the convex side (vehicle front side) 12 thereof. On the rear side (vehicle rear side) 13 of the neck support member 11, a pair of shaft support members 14 are fixed side by side in the longitudinal direction of the neck support member 11 (the left-right direction of the vehicle). A round hole 15 is formed in each shaft support member 14, and a shaft 16 is inserted through the two round holes 15. And the front end side 4b of the arm part 4 is being fixed to the both ends of the axis | shaft 16, respectively. The shaft support member 14 and the shaft 16 are rotatable forward and backward with respect to the distal end side 4b of the arm portion 4 (in the direction of arrow 41). Accordingly, the neck support member 11 is attached to the distal end side 4b of the arm portion 4 so as to be rotatable forward and backward.

  The shaft 3 is inserted through a helical spring 21 serving as a first elastic member. One end 21 a of the helical spring 21 is attached to one arm portion 4, and the other end 21 b is attached to a spring attachment portion 22 fixed to the base portion 2. Thereby, the helical spring 21 urges the arm portion 4 and consequently the neck support member 11 upward (in the direction of the arrow 23). Therefore, the arm portion 4 is biased so as to contact the lower portion 107 of the headrest 102.

  The shaft 16 is inserted through a helical spring 31 that is a second elastic member. One end 31 a of the helical spring 31 is attached to one arm portion 4, and the other end 31 b is attached to a spring attachment portion 32 fixed to the rear side (vehicle rear side) 13 of the neck support member 11. Thereby, the helical spring 31 urges the neck support member 11 in the rotation direction (in the direction of the arrow 41) about the shaft 16 to elastically support the neck support member 11. Specifically, the elastic force of the helical spring 31 prevents the convex side 12 of the neck support member 11 from facing downward due to its own weight, and the convex side 12 is the front side of the vehicle seat 100 (the vehicle front side). It is energizing to face.

  Next, the effect of the neck support device 1 of the vehicle seat 100 will be described. FIG. 3 is an explanatory diagram for explaining the operation of the neck support device 1 for a vehicle seat. FIG. 3 is a side view of the upper part of the vehicle seat 100 to which the vehicle seat neck support device 1 is attached. FIG. 3A shows a state in which an occupant 200 having a relatively high seat height is seated on the vehicle seat 100, and FIG. 3B shows a state in which an occupant 200 having a relatively low seat height is seated on the vehicle seat 100. Show.

In any case, the helical spring 21 urges the arm portion 4 and thus the neck support member 11 upward (in the direction of the arrow 23). As a result, the arm portion 4 is locked to the lower portion 107 of the headrest 102. Therefore, the height of the headrest 102 also determines the height of the neck support member 11. Therefore, when the occupant 200 having a relatively high seating height is seated on the vehicle seat 100, the headrest 102 is lifted in the direction of the arrow 111 in accordance with the seating height of the occupant 200 to increase the position of the headrest 102. The position naturally increases (FIG. 3 (a)). Accordingly, the position of the neck support member 11 is automatically adjusted to a height that matches the rear neck portion 201 of the occupant 200 having a relatively high seating height. On the contrary, when the occupant 200 having a relatively low seating height is seated on the vehicle seat 100, the headrest 102 is pulled down in the direction of the arrow 112 in accordance with his / her seating height to lower the position of the headrest 102. The position is naturally lowered (FIG. 3 (b)). Accordingly, the position of the neck support member 11 is automatically adjusted to a height that matches the rear neck portion 201 of the occupant 200 having a relatively low seat height.
Therefore, according to the first embodiment, it is possible to provide the cervical support device 1 for a vehicle seat that can easily adjust the height of the cervical support member 11 according to the seat height of the occupant.

  Further, the elastic force of the helical spring 31 prevents the convex side 12 of the neck support member 11 from facing downward due to its own weight. Thereby, the helical spring 31 is biased so that the convex side 12 faces the front side (vehicle front side) of the vehicle seat 100. And the direction of the convex side 12 is fluctuate | varied by the height of the neck support member 11 changing as mentioned above. Therefore, when the position of the neck support member 11 becomes higher as described above, if the occupant 200 leans the rear neck portion 201 against the convex side 12 of the neck support member 11, the elastic force of the helical spring 31 is resisted. Thus, the neck support member 11 rotates downward (in the direction of arrow 41) (FIG. 3A). Then, the convex side 12 is naturally adjusted in a direction that matches the rear neck portion 201. Further, when the position of the neck support member 11 is lowered as described above, when the occupant 200 leans the rear neck portion 201 against the convex side 12 of the neck support member 11, the elastic force of the helical spring 31 is resisted. Thus, the neck support member 11 rotates upward (in the direction of arrow 42) (FIG. 3B). Then, the convex side 12 is naturally adjusted in a direction that matches the rear neck portion 201.

[Embodiment 2]
FIG. 4 is a perspective view of the vehicle seat neck support device 1a according to the second embodiment of the present invention as viewed obliquely from the rear. With respect to the vehicle seat neck support device 1a according to the second embodiment, members and the like that are the same as those of the vehicle seat neck support device 1 according to the first embodiment are the same as those in the first embodiment, and detailed description thereof is omitted. .

  The vehicle seat cervical support device 1a according to the second embodiment is different from the vehicle seat cervical support device 1 in that the latter is fixed to the seat back 101 of the vehicle seat 100 from the beginning. Thus, the former is attached to the seat back 101 later. Therefore, the neck support device 1a for a vehicle seat includes a pair of attachment members 51 for attaching the device to the headrest guide 104 (FIG. 5). The base 2 is fixed to a pair of attachment members 51 at both ends in the longitudinal direction. The attachment member 51 is formed with a hole 51a penetrating vertically.

  FIG. 5 is a perspective view of the upper part of the vehicle seat 100 in a state where the neck support device 1a for the vehicle seat according to the second embodiment is attached as viewed obliquely from the rear side. In order to attach the cervical support device 1a for a vehicle seat to the seat back 101, the following is performed. First, the headrest 102 and the two pillars 105 are pulled out from the seat back 101 of the vehicle seat 100. In this example, the headrest guide 104 in the upper part 103 of the seat back 101 is formed only in the periphery of holes (corresponding to the holes 106 in FIG. 1) into which the two pillars 105 are respectively inserted (headrest guide 104a). . Then, the attachment member 51 is fixed to each of the two headrest guides 104a by a known fixing means. Then, the two pillars 105 are respectively inserted into the holes 51a of the mounting member 51 and further into the holes of the headrest guide 104a (corresponding to the holes 106 in FIG. 1) of the upper part 103 of the seat back 101. return. This state is illustrated in FIG.

According to the cervical support device 1a for a vehicle seat according to the second embodiment, the same operational effects as those of the cervical support device 1 for a vehicle seat described above with reference to FIG. 3 can be obtained.
In addition, the cervical support device 1a of the second embodiment can be easily detached from the seat back 101 as compared to the other embodiments. On the other hand, since the headrest guide 104 can be used regardless of whether the neck support device 1a is attached to or detached from the seat back 101, the headrest 102 can be used alone. Therefore, the use or non-use of the cervical support device 1a can be selected according to the passenger's preference, which is more preferable.

[Embodiment 3]
FIG. 6: is the perspective view which looked at the neck support apparatus 1b of the vehicle seat concerning Embodiment 3 of this invention from diagonally back. With respect to the neck support device 1b for a vehicle seat according to the third embodiment, members and the like that are common to the neck support device 1 for the vehicle seat according to the first embodiment are the same as those in the first embodiment, and detailed description thereof is omitted. .

The vehicle seat neck support device 1b according to the third embodiment is different from the vehicle seat neck support device 1 in the following points. That is, both end portions in the longitudinal direction of the base 2 are extended to the headrest guides 104a so as to be spanned over the headrest guides 104 (104a) formed only in the peripheral portions of the holes 106 into which the two pillars 105 are respectively inserted. Each is fixed. That is, the form of the headrest guide 104 is different from that of the first embodiment, and the structure for attaching the base 2 to the headrest guide 104 is also different correspondingly.
According to the cervical support device 1b for a vehicle seat of the third embodiment, it is possible to achieve the same effects as the cervical support device 1 for a vehicle seat described above with reference to FIG.

1, 1a, 1b Neck support device for vehicle seat 2 Base 11 Neck support member 21 Helical spring (first elastic member)
31 helical spring (second elastic member)
4 Arm part 4a Base end side 4b Front end side 100 Vehicle seat 101 Seat back 102 Headrest 103 Upper part 104, 104a Headrest guide

Claims (2)

A base fixed to the upper part of the seat back of the vehicle seat;
An arm portion whose base end side is attached to the base portion so as to be rotatable forward and backward in the vertical direction, and whose distal end side extends to the front side of the seat back;
A neck support member provided on the distal end side of the arm,
A first elastic member that urges the arm portion to contact the headrest side of the vehicle seat positioned above the seat back;
Neck support device for a vehicle seat comprising The neck support member is attached to the distal end side of the arm portion so as to be freely rotatable forward and backward.
The cervical support device for a vehicle seat according to claim 1, further comprising a second elastic member that urges the cervical support member in a direction opposite to a rotation direction by its own weight to elastically support the cervical support member.

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