JP2021006423A - Headrest device and seat device - Google Patents

Abstract

To provide a headrest device which can prevent slip-down in a height position during use and a seat device equipped with the same.SOLUTION: A headrest device related to one embodiment of the invention is equipped with a base member, a headrest body, and a support mechanism. The base member has an attachment part which is attached to a seat back of a seat slidably in a height direction. The headrest body has a first principal surface part for supporting a back part of a head of a seat user and a regulating part which is arranged on a surface on an opposite side of the first principal surface part and protrudes toward the seat back. The support mechanism is provided between the base member and the headrest body and is configured that the headrest body is converted from a first position in which the regulating part is separated from the seat back into a second position in which the regulating part is brought into contact with the seat back by a load applied to the first principal surface part.SELECTED DRAWING: Figure 7

Description

The present invention relates to a headrest device provided on a seat of a vehicle and a seat device provided with the headrest device.

For example, as a seat for a railroad vehicle, a seat provided with a headrest that supports the back of the head of a seat user is known (see, for example, Patent Document 1). However, this type of headrest does not support the occupant's neck and the neck is not stable.

On the other hand, as a headrest for an automobile seat, a headrest having a structure capable of supporting not only the back of the head of an occupant but also the neck is known. For example, in Patent Document 2, a headrest portion that supports the back of the head of a seat user, a pair of neck support portions arranged on both sides of the lower portion of the headrest portion, and a headrest portion and a pair of neck support portions are interconnected. A rotating mechanism capable of rotating the pair of neck support portions between the first position for sandwiching the seat user's neck from both the left and right sides and the second position for separating the seat user's neck from the neck. A headrest device comprising the above is disclosed.

Jikkai Sho 63-13055 JP-A-2018-436777

For example, a headrest for a railroad vehicle is attached so as to be slidable in the height direction with respect to the seat (backrest), and the seat user can manually raise or lower the headrest to a desired height position. Can be adjusted to. However, while the seat is in use, the weight of the user's head acts on the headrest in addition to the weight of the headrest itself, so that the headrest may slide down from the initial height position, making it difficult to use. In particular, in the headrest having the neck support portion, a downward load is likely to be applied to the headrest, and therefore the above problem is likely to occur.

In view of the above circumstances, an object of the present invention is to provide a headrest device capable of preventing the height position from sliding down during use and a seat device provided with the headrest device.

The headrest device according to one embodiment of the present invention includes a base member, a headrest body, and a support mechanism.
The base member has a mounting portion that is slidably mounted in the height direction on the back of the seat.
The headrest body has a first main surface portion that supports the back of the head of the seat user, and a regulating portion that is arranged on a surface opposite to the first main surface portion and projects toward the backrest.
The support mechanism is provided between the base member and the headrest main body, and the headrest main body is separated from the backrest by a load received by the first main surface portion from a first posture in which the restricting portion is separated from the backrest. The restricting unit is configured to be able to be converted into a second posture in contact with the backrest.

In the headrest device, the back head of the seat user is supported by the first main surface portion, and the headrest main body changes to the second posture by the load at that time, so that the regulating portion is brought into contact with the backrest. As a result, a contact frictional force is generated between the regulating portion and the backrest, and the headrest device is prevented from sliding down from the backrest.

The support mechanism may be configured by a spring hinge arranged above the headrest body and having a rotation axis parallel to the width direction of the headrest body. The spring hinge urges the headrest body with respect to the base member in the first posture. As a result, the headrest device can be maintained in the first posture when the seat is not in use, so that the height position of the headrest device can be adjusted.

The base member has a plate-shaped frame portion that supports the mounting portion, and the regulating portion is provided at a shaft portion that penetrates the frame portion from the headrest body and at the tip of the shaft portion. It may include a regulating member that comes into contact with the backrest in the posture of.

The mounting portion is composed of a pair of plate-shaped guide members arranged apart from each other in the width direction of the seat, and the restricting portion is separated from each other in the width direction between the pair of guide members. And a plurality of them may be arranged.

The headrest body may have a headrest portion, a pair of neck support portions, and a rotation mechanism.
The headrest portion has the first main surface portion.
The pair of neck support portions have a second main surface portion and support end portions forming one peripheral edge portion of the second main surface portion, and are arranged on both sides of the lower portion of the headrest portion.
The rotating mechanism connects the headrest portion and the pair of neck support portions to each other, and the support end portion sandwiches the neck of the seat user from both the left and right sides, and the support end portion is seated. The pair of neck support portions can be rotated between the second position and the second position separated from the user's neck.

The seating apparatus according to one embodiment of the present invention includes a backrest, a base member, a headrest main body, and a support mechanism.
The base member is slidably attached to the backrest in the height direction.
The headrest body has a first main surface portion that supports the back of the head of the seat user, and a regulating portion that is arranged on a surface opposite to the first main surface portion and projects toward the backrest.
The support mechanism is provided between the base member and the headrest main body, and the headrest main body is separated from the backrest by a load received by the first main surface portion from a first posture in which the restricting portion is separated from the backrest. The restricting unit is configured to be able to be converted into a second posture in contact with the backrest.

According to the present invention, it is possible to prevent the height position from slipping down during use.

It is an overall perspective view which shows one form of the headrest device which concerns on one Embodiment of this invention. It is an overall perspective view which shows the other form of the headrest device schematically. It is a transparent perspective view explaining the internal structure of the headrest main body in the said headrest apparatus. It is a schematic perspective view which shows the use state of the said headrest device. It is a perspective view of the back side of the main part of the headrest device. It is a rear view of the main part of the headrest device. It is a side view of the main part of the headrest device. It is a side view of the main part explaining the operation of the headrest device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 and 2 are overall perspective views schematically showing the configuration of the headrest device 100 according to the embodiment of the present invention, and FIG. 1 is when not in use (or when the neck support portion is not in use) and FIG. Indicates the time of use (or when the neck support part is used).
In each figure, the X-axis, the Y-axis, and the Z-axis show three axes orthogonal to each other, the X-axis is the left-right direction (width direction), the Y-axis is the front-back direction, and the Z-axis is the height direction. Equivalent to.

[Overall configuration of headrest device]
The headrest device 100 is installed above a seat (seat device) of a railway vehicle such as a Shinkansen or a limited express train. The headrest device 100 is configured to be able to support the head of the user (seat user) from behind.

The headrest device 100 includes a headrest main body 10 having a headrest portion 11 and a pair of neck support portions 12L and 12R, a base member 20 (see FIG. 4) for attaching the headrest main body 10 to a seat (not shown), a headrest main body 10 and a base member. It is provided with a support mechanism 30 (see FIG. 5) installed between the 20 and the 20.

The headrest main body 10 constitutes the front surface (front surface) of the headrest device 100 facing the back of the head of the user, and the shape when viewed from the front direction is a substantially rectangular shape having a long side in the X-axis direction and a short side in the Z-axis direction. Formed into a shape.
On the other hand, the base member 20 constitutes the back surface (rear surface) of the headrest device 100 facing the seat. The details of the base member 20 and the support mechanism 30 will be described later.

[Headrest body]
The headrest portion 11 and the pair of neck support portions 12L and 12R are each composed of a plate-shaped structure having cushioning properties. The pair of neck support portions 12L and 12R are connected to each other via rotation mechanisms 13L and 13R described later, and are configured to be rotatable forward by a predetermined angle with respect to the headrest portion 11 as shown in FIG. To.

The headrest portion 11 has a first main surface portion 111 that supports the back of the head of the user. The first main surface portion 111 has a substantially isosceles triangle shape in which the apex is located at the lower part, and is composed of a plane substantially parallel to the XZ plane in FIG. The peripheral edge portion along the bottom side 111a of the first main surface portion 111 forms the upper surface of the headrest main body 10, and the pair of oblique sides 111b and 111c of the first main surface portion 111 and the phase peripheral edge portion form a pair of neck support portions 12L and 12R, respectively. Facing.

The pair of neck support portions 12L and 12R are arranged on both sides of the lower portion of the headrest portion 11, respectively. The pair of neck support portions 12L and 12R have a second main surface portion 121. The second main surface portion 121 has a substantially isosceles triangle shape having bottom portions 121c facing the hypotenuse portions 111b and 111c of the first main surface portion 111, respectively. Of the pair of hypotenuses of the second main surface portion 121, the peripheral edge portion along one of the hypotenuses forms the lower surface of the headrest main body 10 in the posture shown in FIG. 1, and the user's neck in the posture shown in FIG. It functions as a supporting end portion 121a to support. The peripheral edge portion of the second main surface portion 121 along the other hypotenuse portion forms both side surfaces of the headrest main body 10.

FIG. 3 is a transparent perspective view illustrating the internal structure of the headrest main body 10. The headrest portion 11 and the neck support portions 12L and 12R are composed of a combination of the first support frame 151 and the second support frames 152L and 152R and the cushion materials 11c, 12Lc and 12Rc accommodating them, respectively.

As shown in FIG. 3, the headrest body 10 has a frame assembly 150. The frame assembly 150 includes a first support frame 151 constituting the headrest portion 11, second support frames 152L and 152R constituting the neck support portions 12L and 12R, and the headrest portion 11 and the neck support portions 12L and 12R. It has rotating mechanisms 13L and 13R that are connected to each other.

The first support frame 151 has a rib structure in which the upper side is bent by approximately 90 degrees on the back side, so that the deformation strength is enhanced. The second support frames 152L and 152R are composed of a metal plate having a substantially right-angled isosceles triangle formed in a symmetrical shape. The second support frames 152L and 152R have a rib structure in which the bottom surface is bent by approximately 90 degrees on the back surface side, so that the deformation strength is enhanced.

The rotation mechanism 13L connects the first support frame 151 and the second support frame 152L to each other, and the rotation mechanism 13R connects the first support frame 151 and the second support frame 152R to each other. To do. The rotating mechanisms 13L and 13R have a first position (see FIG. 2) in which the user's neck is sandwiched from both the left and right sides by the support end portions 121a, and a second position (FIG. 1) in which the support end portion 121a is separated from the user's neck. It is configured so that the pair of neck support portions 12L and 12R can be rotated, respectively.

The rotation mechanisms 13L and 13R have a pair of rotation shafts 134L and 134R that rotate the pair of neck support portions 12L and 12R around an axis parallel to the first main surface portion 111, respectively, and the support end portion 121a The neck support portions 12L and 12R are rotated with respect to the headrest portion 11 so as to project forward from the first main surface portion 111 at the first position (see FIG. 2).

In the present embodiment, the pair of rotating shafts 134L and 134R intersect diagonally with respect to the X-axis (first axis) direction parallel to the width direction of the headrest portion 11, and the Z-axis (second axis) orthogonal to the X-axis. Are arranged symmetrically with respect to (axis). The bases 152c of the second support frames 152L and 152R constituting the neck support portions 12L and 12R are inclined by about 45 degrees with respect to the X axis, and these bases 152c are inclined in opposite directions symmetrically with respect to the Z axis. There is. Therefore, the angle formed by the pair of rotating shafts 134L and 134R in the left-right direction (X-axis direction) is set to be approximately 45 degrees in a substantially V shape when viewed from the front direction of the frame assembly 150.

The angle formed by the rotating shafts 134L and 134R and the X-axis direction is not limited to 45 degrees and can be set to any angle. In this embodiment, for example, the angle is set in the range of 30 degrees to 60 degrees. As a result, the support end portions 121a of the neck support portions 12L and 12R can be easily brought close to the position of the neck without giving a feeling of oppression to the user.

The rotating mechanisms 13L and 13R each have the same configuration, and include a plurality of (two in this example) torque hinges 131L and 131R, respectively. The torque hinges 131L and 131R have rotation shafts 134L and 134R fixed to the hypotenuses 152c of the second support frames 152L and 152R. The torque hinges 131L and 131R are fixed to the first support frame 151 via the bracket 133.

The torque hinges 131L and 131R are configured to hold their posture at an arbitrary angular position, and typically realize a predetermined rotational torque by a frictional force between the movable portion and the fixed portion. The structure and type of the torque hinges 131L and 131R are not particularly limited. For example, a structure in which a fixed disc is sandwiched between movable discs, a structure in which a leaf spring is wound around a rotating shaft, and a rotating shaft pressed by a clip or the like. The structure and the like can be mentioned.

The rotation torque of the torque hinges 131L and 131R is not particularly limited. For example, the neck support portions 12L and 12R can be rotated with respect to the headrest portion 11 by operation with the user's fingers, and during use. The neck support portions 12L and 12R are set to an appropriate value (for example, 0.11 to 0.14 kg · m) capable of stably maintaining the posture at the rotation position.

FIG. 4 is a schematic perspective view showing a usage state of the headrest device 100.

The headrest device 100 is attached to the upper part of the backrest 300 of the seat S. The neck support portions 12L and 12R are converted to the first position shown in FIG. 2 by being rotated forward by a predetermined angle around the rotation shafts 134L and 134R (see FIG. 3). As a result, the support end portion 121a that constitutes the lower edge portion of each of the neck support portions 12L and 12R protrudes forward, and the position that is obliquely inclined with respect to the headrest portion 11 (first main surface portion 111) is set. Take. As a result, the neck of the user U whose occipital region is supported by the headrest portion 11 is supported so as to be sandwiched between the support end portions 121a of the neck support portions 12L and 12R from both the left and right sides.

[Base member]
Subsequently, the details of the base member 20 will be described. 5 is a perspective view of the back side of the frame assembly 150 to which the base member 20 is attached, FIG. 6 is a rear view of the frame assembly 150 as viewed from the backrest 300 side, and FIGS. 7 and 8 are side views thereof. Is.

The base member 20 is configured as a support for installing the headrest main body 10 on the backrest 300. The base member 20 includes a plate-shaped frame portion 21 and a mounting portion 22 slidable in the height direction (Z-axis direction) on the backrest 300.

The frame portion 21 is made of a rectangular metal plate and is arranged so as to face the back surface of the first support frame 151. The relative position of the frame portion 21 with respect to the first support frame 151 is not particularly limited, and in the present embodiment, the center of the frame portion 21 is arranged slightly below the center of the first support frame 151. The frame portion 21 is connected to the back surface of the first support frame 151 via a support mechanism 30. Details of the support mechanism 30 will be described later.

The mounting portion 22 is composed of a pair of plate-shaped guide members arranged on the back surface of the frame portion 21 so as to be separated from each other in the width direction (X-axis direction). In the present embodiment, a pair of plate-shaped mounting portions 22 that are long in the height direction (Z-axis direction) are mounted along the two short sides of the frame portion 21. Each mounting portion 22 is similarly configured and has guide grooves 22a parallel to the height direction (Z-axis direction) on both side surfaces thereof. The backrest 300 has a pair of guide rails 301 (see FIG. 6) that engage with the guide grooves 22a of each of the pair of mounting portions 22 at a portion facing the headrest device 100. As a result, the entire headrest device 100 including the base member 20 is configured to be slidable in the height direction of the backrest 300.

The engaging force between the mounting portion 22 and the guide rail 301 is typically such that the headrest device 100 does not slide downward with respect to the backrest 300 due to the weight of the headrest device 100, and is at an arbitrary height position. The engaging force is set so that the headrest device 100 can be manually slid. The method of adjusting the engaging force is not particularly limited, and in the present embodiment, a spring for adjusting the frictional force between the guide groove 22a and the guide rail 301 is built in the mounting portion 22.

The frame portion 21 further includes a first stopper 23a and a second stopper 23b that limit the height position of the headrest device 100 with respect to the backrest 300.

The first stopper 23a is composed of a metal plate material arranged in the vicinity of the central upper edge portion of the frame portion 21. The first stopper 23a faces the first protruding piece 302a attached to the backrest 300 in the height direction (Z-axis direction), and the lower limit position of the height of the headrest device 100 due to the contact with the first protruding piece 302a. To specify. The first stopper 23a and the first protruding piece 302a are provided in pairs at intervals in the width direction (X-axis direction), but the present invention is not limited to this, and each may be composed of, for example, a single member.

On the other hand, the second stopper 23b is composed of a metal plate material arranged near the lower edge portion in the center of the frame portion 21. The second stopper 23b faces the second protruding piece 302b attached to the backrest 300 in the height direction (Z-axis direction), and the upper limit position of the height of the headrest device 100 due to the contact with the second protruding piece 302b. To specify. The second stopper 23b and the second protruding piece 302b are each composed of a single member, but the present invention is not limited to this, and a pair of the second stopper 23b and the second protruding piece 302b may be provided, for example, separated from each other in the width direction (X-axis direction).

[Support mechanism]
The support mechanism 30 is installed between the headrest main body 10 and the base member 20, and is configured to be able to tilt the headrest main body 10 with respect to the base member 20 about an axis along the width direction thereof.

As shown in FIG. 7, in the support mechanism 30, the headrest body 10 is tilted by a predetermined angle toward the base member 20 from a posture in which the headrest body 10 is parallel to the base member 20 (hereinafter, also referred to as a first posture). The headrest body 10 is supported so that it can be converted into a normal posture (hereinafter, also referred to as a second posture). The first posture corresponds to the non-used state of the headrest device 100, and the second posture corresponds to the used state of the headrest device 100.

As shown in FIG. 7, the support mechanism 30 is arranged on the upper part of the headrest main body 10, and in the present embodiment, as shown in FIG. 6, the support mechanism 30 is arranged at three places along the upper edge of the headrest main body 10. Each support mechanism 30 has a rotation shaft 31 parallel to the width direction (X-axis direction) of the headrest main body 10, and a frame portion of the first support frame 151 of the headrest main body 10 and the base member 20 via the rotation shaft 31. It is composed of a plurality of brackets 32 connecting the 21 and a spring hinge including a torsion spring that urges the headrest main body 10 with respect to the base member 20 toward the first posture.

The support mechanism 30 is configured to exert an urging force when the headrest main body 10 is tilted from the first posture to the second posture. Not limited to this, the support mechanism 30 may be in a preload state in which the urging force acts even when the headrest main body 10 is in the first posture. In this case, a mechanism for limiting the rotation angle range of the headrest main body 10 may be provided in the support mechanism 30 or the like.

[Regulatory Department]
The headrest main body 10 further has a regulating portion 16. The regulating portion 16 is arranged on a surface of the headrest main body 10 opposite to the first main surface portion 111, and is composed of a protruding member that projects toward the backrest 300. The backrest 300 has a receiving portion 303 capable of contacting the regulating portion 16 at a portion facing the regulating portion 16. When the headrest main body 10 is in the first posture, the restricting portion 16 is separated from the receiving portion 303 in the front-rear direction (Y-axis direction), and the headrest main body 10 is in the second posture. When it is, as shown in FIG. 8, it is configured to come into contact with the receiving portion 303.

The separation distance between the regulating portion 16 and the receiving portion 303 of the backrest 300 in the first posture in the front-rear direction (Y-axis direction) is, for example, 10 mm or more. The tilt angle of the headrest main body 10 by the support mechanism 30 with respect to the base member 20 is not particularly limited, and is, for example, 10 ° or more and 20 ° or less.

The regulating unit 16 is for restricting the sliding down of the height position of the headrest device 100 with respect to the backrest 300 by contacting the receiving portion 303 of the backrest 300 when the headrest main body 10 is in the second posture. It is a thing. In the present embodiment, the regulating portion 16 includes a shaft portion 161 and a regulating member 162 provided at the tip of the shaft portion 161.

The shaft portion 161 is vertically attached to the back surface of the first support frame 151 of the headrest main body 10 and penetrates through a through hole H provided in the frame portion 21 of the base member 20. The regulating member 162 is a plate-shaped member provided at the tip of the shaft portion 161. The material of the regulating member 162 is not particularly limited, but is appropriate such as synthetic resin, elastomer, synthetic rubber, etc., which can generate a predetermined frictional force with the receiving portion 303 when the backrest 300 comes into contact with the receiving portion 303. It is preferably composed of a material having a high elasticity.

The shape and size of the regulating member 162 are not particularly limited. In the present embodiment, the regulating member 162 is made of a disk-shaped plate-shaped rubber having a diameter larger than that of the shaft portion 161 and is fixed to the tip of the shaft portion 161 by a fastener such as a screw inserted in the center portion thereof. To. As a result, it is possible to secure a contact area with the receiving portion 303 and relatively easily generate a frictional force that can regulate the sliding of the headrest device 100 when the headrest main body 10 is in the second posture.

The material constituting the receiving portion 303 is not particularly limited, and a part of the constituent material of the backrest 300 or another material may be used. As such a material, a material capable of obtaining a friction coefficient of a predetermined value or more with the regulating member 162 is preferable, and for example, a plate material having a relatively large surface roughness or a sheet material having a surface state such as a hook-and-loop fastener is used. It may be.

The number of regulation units 16 installed may be single or plural. In the present embodiment, a plurality (two in this example) of the regulating portions 16 are arranged between the pair of mounting portions 22 (guide members) so as to be separated from each other in the width direction (X-axis direction). Each of the regulating portions 16 has the same configuration, and when the headrest main body 10 is in the second posture, these regulating portions 16 are configured to come into contact with the receiving portion 303 of the backrest 300 at the same time.

[Action of headrest device]
Subsequently, the typical operation of the headrest device 100 of the present embodiment configured as described above will be described.

When the headrest device 100 is not in use, typically, as shown in FIG. 1, a pair of neck support portions 12L and 12R are deployed, and each of the second main surface portions 121 is the first main surface portion of the headrest portion 11. It is in a state (second position) located on substantially the same plane as 111.

Further, the headrest device 100 at this time is in the first posture with respect to the backrest 300 as shown in FIG. 7. Therefore, since the regulating portion 16 is located at a position separated from the receiving portion 303 of the backrest 300, the adjustment of the height position of the headrest device 100 with respect to the backrest 300 by the regulating portion 16 is not hindered.

When the headrest device 100 is used, the neck support portions 12L and 12R are converted to the state (first position) shown in FIG. 2 according to the user's preference. At this time, the neck support portions 12L and 12R project forward from the headrest portion 10. As a result, when the neck support portions 12L and 12R are not in use, they can be retracted on substantially the same plane as the headrest portion 11, and the headrest device 100 can be made compact.

Of course, the headrest device 100 can be used in the state shown in FIG. 1 (second position), but the operations of the neck support portions 12L and 12R will be described below.

The neck support portions 12L and 12R are converted to the first position shown in FIG. 2 by being rotated forward by a predetermined angle around the rotation shafts 134L and 134R (see FIG. 3). As a result, the support end portion 121a that constitutes the lower edge portion of each of the neck support portions 12L and 12R protrudes forward, and the position that is obliquely inclined with respect to the headrest portion 11 (first main surface portion 111) is set. Take. As a result, as shown in FIG. 4, the neck of the user U whose occipital region is supported by the headrest portion 11 is supported so as to be sandwiched between the support end portions 121a of the neck support portions 12L and 12R from both the left and right sides.

Therefore, according to the present embodiment, the neck of the user can be stably supported. As a result, the burden on the user's neck and shoulders can be reduced, and a more relaxed posture can be realized. In addition, it is possible to provide a highly comfortable seating space even when riding for a long time such as a Shinkansen or a night bus.

Further, according to the present embodiment, since the support end portion 121a that sandwiches the neck of the user U is composed of the peripheral portions of the neck support portions 12L and 12R, the user's shoulders and temporal region are not pressed. The user's neck can be pinched from both sides. Moreover, since the rotation shafts 134L and 134R of the neck support portions 12L and 12R are set obliquely, the cervical spine portion can be stably supported from the posterior side, and the feeling of pressure on the neck can be suppressed.

Moreover, the first main surface portion 111 (headrest portion 11) has a substantially isosceles triangle shape in which the apex is located at the lower part, and the second main surface portion 121 (neck support portions 12L, 12R) is the first main surface portion. It has a substantially isosceles triangle shape having a base portion facing the hypotenuse portion of the face portion 111. As a result, the gap between the neck support portions 12L and 12R (support end portion 121a) becomes narrower as it approaches the headrest portion 11, so that the neck of the user U is stabilized without depending on the thickness and length of the neck. Can be supported by.

Further, in the headrest device 100 of the present embodiment, the back head of the user is supported by the first main surface portion 111, and the headrest main body 10 moves from the first posture shown in FIG. 7 to the second posture shown in FIG. 8 by the load at that time. At the same time, the regulating portion 16 comes into contact with the receiving portion 303 of the backrest 300. As a result, a contact frictional force is generated between the regulating portion 16 and the receiving portion 303, so that the headrest device 100 is prevented from sliding down from the backrest 300 during use.

Therefore, according to the present embodiment, it is possible to prevent the headrest device 100 from sliding down due to the weight of the user's head while using the seat, so that it is possible to eliminate the difficulty of using the headrest device 100 due to the sliding down. In particular, in the headrest device 100 having the neck support portions 12L and 12R, a downward load is likely to be applied to the headrest device 100. However, according to the present embodiment, the load is converted into an increase in the drop resistance of the headrest device 100 due to the contact between the regulating portion 16 and the backrest 300, so that the headrest is also used when the neck support portions 12L and 12R are used. It is possible to effectively prevent changes in the height position of the device 100 and ensure a comfortable ride.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made.

For example, in the above-described embodiment, for example, in the above-described embodiment, a headrest device applicable to a seat for a railroad vehicle such as a Shinkansen or an automobile vehicle such as a night bus has been described as an example, but the present invention is not limited to this. The present invention can also be applied to a seat provided in another moving body such as, or a seat provided in a viewing seat of a movie theater or the like.

Further, in the above embodiment, the headrest device having the neck support portions 12L and 12R has been described as an example, but the present invention can also be applied to the headrest device not provided with the neck support portion. In this case, the position where the support mechanism 30 is provided is not limited to the upper part of the headrest main body 10, and may be, for example, the lower part of the headrest main body 10.

Further, in the above embodiment, the support mechanism 30 is configured to tiltably support the headrest main body 10 with respect to the base member 20, but the present invention is not limited to this. For example, the support mechanism 30 may be configured by a link mechanism such as a pantograph, and the headrest main body 10 may be supported so as to be able to translate in the front-rear direction with respect to the base member 10. In this case, the regulating portion 16 is configured so that the headrest main body 10 comes into contact with the backrest 300 (receiving portion 303) at a position closest to the base member 20.

10 ... Headrest body 11 ... Headrest part 12L, 12R ... Neck support part 13L, 13R ... Rotation mechanism 16 ... Regulation part 20 ... Base member 22 ... Mounting part 21 ... Frame part 30 ... Support mechanism 31 ... Rotation shaft 100 ... Headrest Device 111 ... First main surface portion 121 ... Second main surface portion 121a ... Support end portion 300 ... Backrest

Claims (6)

A base member with a mounting part that slides in the height direction on the back of the seat,
A headrest body having a first main surface portion that supports the back of the head of the seat user, and a regulating portion that is arranged on a surface opposite to the first main surface portion and projects toward the backrest.
The headrest body is separated from the backrest by the load received by the first main surface portion provided between the base member and the headrest main body, and the restricting portion is separated from the backrest by the restricting portion. A headrest device including a support mechanism configured to be able to convert to a second posture in contact with the backrest. The headrest device according to claim 1.
The support mechanism is arranged above the headrest body and has a rotation axis parallel to the width direction of the headrest body, and urges the headrest body toward the base member in the first posture. Headrest device consisting of spring hinges. The headrest device according to claim 2.
The base member has a plate-shaped frame portion that supports the mounting portion.
The restricting portion is a headrest device including a shaft portion penetrating the frame portion from the headrest main body and a restricting member provided at the tip of the shaft portion and in contact with the backrest in the second posture. The headrest device according to claim 3.
The mounting portion is composed of a pair of plate-shaped guide members arranged apart from each other in the width direction of the seat.
A plurality of headrest devices are arranged between the pair of guide members so as to be separated from each other in the width direction. The headrest device according to any one of claims 1 to 4.
The headrest body
The headrest portion having the first main surface portion and
A pair of neck support portions each having a second main surface portion and a support end portion forming one peripheral edge portion of the second main surface portion, and arranged on both sides of the lower portion of the headrest portion,
The first position where the headrest portion and the pair of neck support portions are interconnected and the neck of the seat user is sandwiched from both the left and right sides by the support end portion, and the support end portion is separated from the neck of the seat user. A headrest device having a rotation mechanism configured to rotate the pair of neck support portions with respect to a second position to be operated. With a backrest
A base member slidably attached to the backrest in the height direction,
A headrest body having a first main surface portion that supports the back of the head of the seat user, and a regulating portion that is arranged on a surface opposite to the first main surface portion and projects toward the backrest.
The restricting portion is provided between the base member and the headrest main body, and the restricting portion is separated from the backrest by a load received by the first main surface portion. A seating device comprising a support mechanism configured to be able to convert to a second posture in contact with the backrest.

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