JP2018042802A - Headrest device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a headrest device capable of stably supporting a neck.SOLUTION: A headrest device includes a headrest body, a base member, and an inclination mechanism. The headrest body includes: a headrest part having a first main surface part for supporting an occipital region of a seat user; and a pair of neck support parts respectively arranged on both sides of a lower part of the first main surface part so as to hold a seat user's neck from both right and left sides. The base member is attachable to a seat so as to support the headrest body. The inclination mechanism is arranged between a rear surface of the headrest body and the base member and enables the headrest body to be inclined around an axis in the width direction with respect to the base member.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a headrest device provided on a vehicle seat.

  For example, as a railcar seat, a seat provided with a headrest that supports the back of the seat user is known (see, for example, Patent Document 1). However, this type of headrest has no support for 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 a passenger's rear head but also a neck is known. For example, Patent Document 2 includes a central support portion that can support the occipital region of the occupant and an auxiliary support portion that is positioned at a lower front side of the central support portion, and the holding support portion is arranged around an axis that extends in the left-right direction. A headrest configured to be tiltable is disclosed. However, since the headrest is configured to simply support the passenger's neck from the rear side, the head is easily tilted to the left and right, and the sense of stability is low.

Japanese Utility Model Publication No. 63-13055 JP 2007-257 A

  In recent years, the development of seats that can provide comfortable sitting comfort for a long time to passengers such as bullet trains, limited express trains, and long-distance buses has been promoted. The development of a headrest that can reduce the burden on the neck and shoulders is an important issue. However, since the conventional headrest has insufficient support at the neck, the head tends to fall to the left and right, which makes it difficult to reduce the burden on the neck and shoulders.

  In view of the circumstances as described above, an object of the present invention is to provide a headrest device that can stably support the neck.

In order to achieve the above object, a headrest device according to an embodiment of the present invention includes a headrest body, a base member, and a tilting mechanism.
The headrest body is disposed on both sides of the lower portion of the first main surface portion and the headrest portion having a first main surface portion that supports the back of the seat user, and the neck can be sandwiched from both the left and right sides. And a pair of neck support portions configured.
The base member is configured to be attachable to a seat and supports the headrest body.
The tilt mechanism is installed between the back surface of the headrest body and the base member, and is configured to tilt the headrest body about an axis along the width direction with respect to the base member.

  Since the headrest device includes a tilting mechanism configured to tilt the headrest body about an axis along the width direction with respect to the base member, the headrest body can be moved in the front-rear direction according to the seat user's preference. Thus, a stable fit of the neck can be realized without depending on the seating posture of the user or the angle of the seat back.

Each of the pair of neck support portions includes a second main surface portion and a support end portion constituting one peripheral portion of the second main surface portion, and the headrest device further includes a rotation mechanism. Also good.
The rotation mechanism connects the headrest portion and the pair of neck support portions to each other. The pivot mechanism is configured such that the pair of the rotation mechanism extends between a first position where the neck of the seat user is sandwiched from the left and right sides by the support end and a second position where the support end is separated from the neck of the seat user. It is possible to rotate the neck support portion.
As a result, when the neck support portion is not used, it can be retracted on the same plane as the headrest portion, and the headrest device can be made compact.

The turning mechanism may have a pair of turning shafts for turning the pair of neck support portions around axes parallel to the first main surface portion. In this case, the support end portion projects forward from the first main surface portion at the first position.
As a result, when the neck support portion is not used, it can be retracted on the same plane as the headrest portion, and the headrest device can be made compact.

The pair of rotation shafts may be disposed symmetrically with respect to a second axis that intersects the first axis obliquely with respect to a first axis direction parallel to the width direction of the headrest portion. .
Thereby, a user's neck can be stably supported from the back side (headrest part side).

In this case, the first main surface portion has a substantially isosceles triangular shape with the apex located at the lower portion, and the second main surface portion has a bottom portion facing the oblique side portion of the first main surface portion. You may have a substantially isosceles triangle shape.
As a result, the gap between the pair of neck support portions (support end portions) becomes narrower as it approaches the headrest portion, so that the neck can be supported stably without depending on the thickness and length of the seat user's neck. can do.

The base member may include a guide mechanism that guides movement in the vertical direction with respect to the sheet.
Accordingly, the headrest body can be arbitrarily adjusted to a height position where a stable support action of the neck can be obtained by the neck support portion without depending on the seating height or height of the seat user.

  As described above, according to the headrest device of the present invention, the seat user's neck can be stably supported.

1 is an overall perspective view schematically showing a configuration of a headrest device according to an embodiment of the present invention, and shows a non-use state of a neck support portion. It is a whole perspective view which shows the structure of the said headrest apparatus schematically, and has shown the use condition of the neck support part. It is a permeation | transmission perspective view which shows the internal structure of the said headrest apparatus. It is a front view of the frame assembly which constitutes the above-mentioned headrest device. It is a rear view of the said frame assembly. It is a side view of the said frame assembly. It is a perspective view explaining one effect | action of the said headrest apparatus. It is a whole perspective view which shows schematically the structure of the headrest apparatus which concerns on the 2nd Embodiment of this invention, A shows the non-use state of a neck support part, and B shows the use state of a neck support part, respectively. It is a perspective view explaining one effect | action of the said headrest apparatus. It is a whole perspective view which shows roughly the structure of the headrest apparatus which concerns on the 3rd Embodiment of this invention.

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

<First Embodiment>
1 and 2 are overall perspective views schematically showing a configuration of a headrest device 100 according to an embodiment of the present invention. FIG. 1 shows a non-use state and FIG. 2 shows a use state.
In each figure, the X-axis, Y-axis, and Z-axis indicate three axial directions that are orthogonal to each other, the X-axis corresponds to the left-right direction, the Y-axis corresponds to the front-rear direction, and the Z-axis corresponds to the height direction.

[Overall configuration of headrest device]
The headrest device 100 is installed on an upper part of 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 a user (seat user) from behind.

  The headrest device 100 includes a headrest body 10 having a headrest portion 11 and a pair of neck support portions 12L and 12R, a base member 20 for attaching the headrest body 10 to a seat (not shown), and between the headrest body 10 and the base member 20. And an installed tilting mechanism 30.

The headrest body 10 constitutes the front (front surface) of the headrest device 100 facing the user's occipital region, 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. It is 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. Details of the base member 20 and the tilt mechanism 30 will be described later.

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

  The headrest portion 11 has a first main surface portion 111 that supports the user's occipital region. The first main surface portion 111 has a substantially isosceles triangular shape with the apex located at the lower portion, and is configured by a plane substantially parallel to the XZ plane in FIG. The peripheral 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, 111c of the first main surface portion 111 have a pair of neck support portions 12L, 12R. Opposite to.

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

  FIG. 3 is a transparent perspective view illustrating the internal structure of the headrest body 10. Each of the headrest portion 11 and the neck support portions 12L and 12R is configured by a combination of first to third support frames 151 to 153 and cushion materials 11c, 12Lc, and 12Rc that house them.

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

  FIG. 4 is a front view of the frame assembly 150.

  The first support frame 151 is formed of an inverted trapezoidal metal plate having a lower side shorter than an upper side. The first support frame 151 has a rib structure in which the four sides excluding the four corners are bent approximately 90 degrees on the back side, so that the deformation strength is increased. The second support frames 152L and 152R are formed 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 two oblique sides excluding the apex and the bottom are bent approximately 90 degrees on the back side, so that the deformation strength is increased.

  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 rotation mechanisms 13L and 13R have a first position (see FIG. 2) in which the user's neck is sandwiched from the left and right sides by the support end 121a, and a second position in which the support end 121a is separated from the user's neck (FIG. 1). Between the pair of neck support portions 12L and 12R.

  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. The neck support portions 12L and 12R are rotated with respect to the headrest portion 11 so as to protrude 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 obliquely intersects the X-axis (first axis) direction parallel to the width direction of the headrest portion 11, and is a Z-axis (second axis) orthogonal to the X-axis. (See FIG. 4). As shown in FIG. 4, the bottom sides 152c of the second support frames 152L and 152R constituting the neck support portions 12L and 12R are inclined 45 degrees with respect to the X axis, and the bottom sides 152c are symmetrical with respect to the Z axis. Inclined in the opposite direction. For this reason, the angle between the pair of pivot shafts 134L and 134R and the left-right direction (X-axis direction) is set to a substantially V-shaped direction of 45 degrees when viewed from the front direction of the frame assembly 150.

  The angle formed between the rotation shafts 134L and 134R and the X-axis direction is not limited to 45 degrees, and can be set to an arbitrary angle. In the present embodiment, for example, the angle is set in a range of 30 degrees to 60 degrees. Thereby, 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 the user a feeling of pressure.

  The rotation mechanisms 13L and 13R have the same configuration, and each include a plurality (two in this example) of torque hinges 131L and 131R. As for torque hinge 131L, 131R, each rotating shaft 134L, 134R is fixed to the hypotenuse part 152c of 2nd support frame 152L, 152R. Each torque hinge 131L, 131R is fixed to the first support frame 151 via a bracket 133.

  The torque hinges 131 </ b> L and 131 </ b> R are configured to be able to maintain their postures at arbitrary angular positions, and typically, a predetermined rotational torque is realized by a frictional force between the movable part and the fixed part. The structure and type of the torque hinges 131L and 131R are not particularly limited. For example, a structure in which a fixed disk is sandwiched between movable disks, a structure in which a leaf spring is wound around a rotating shaft, and the rotating shaft is pressed by a clip or the like. Examples include the structure.

  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 an operation with a user's finger, and during use. The neck support portions 12L and 12R are set to appropriate values (for example, 0.11 to 0.14 kg · m) that can stably maintain the posture at the rotation position.

[Base member]
Next, details of the base member 20 will be described. FIG. 5 is a rear view of the frame assembly 150 to which the base member 20 is attached, and FIG. 6 is a side view thereof.

  The base member 20 is configured as a support for installing the headrest body 10 on the seat S (see FIG. 6). The base member 20 includes a metal frame portion 21 and a plurality of guide rails 22 connected to the seat S.

  The frame portion 21 is formed of a rectangular metal plate, and is disposed to face the back surface of the first support frame 151 as shown in FIG. 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 disposed 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 the tilt mechanism 30. Details of the tilting mechanism 30 will be described later.

  The plurality of guide rails 22 are attached to the back surface of the frame portion 21. In the present embodiment, two guide rails 22 that are long in the height direction (Z-axis direction) are attached along the two short sides of the frame portion 21. Each guide rail 22 is configured in the same manner and has a pair of guide pieces 22a facing in the width direction (X-axis direction), and a plurality of disk-shaped guides arranged in the height direction on the sheet S therebetween. Thus, the base member 20 can be slid along the height direction of the sheet S and can be held at the slide position.

[Tilt mechanism]
As shown in FIG. 6, the tilt mechanism 30 is installed between the headrest body 10 and the base member 20, and the headrest body 10 can be tilted about the axis along the width direction with respect to the base member 20. Configured to be possible.

  As shown in FIG. 5, the tilt mechanism 30 has a plurality of torque hinges 32 arranged in the width direction (X-axis direction) of the frame assembly 150. These torque hinges 32 are fixed to the base member 20 via brackets 33, and the rotation shaft 31 of each torque hinge 32 is fixed to the first support frame 151.

  The rotational torque of the torque hinge 32 is not particularly limited. For example, the headrest body 10 (frame assembly 150) can be rotated with respect to the base member 20 (seat S) by an operation with a user's finger. And it sets to the moderate value (for example, 0.11-0.14 kg * m) in which the headrest main body 10 can hold | maintain the attitude | position in the rotation position stably during use.

  The tilt mechanism 30 is installed at a substantially central portion of the frame assembly 150 as shown in FIG. As a result, the frame assembly 150 can tilt in both the elevation and depression directions in the arrow R direction with respect to the base member 20 (seat S) as shown in FIG. Therefore, the user can use the headrest body 10 while tilting the headrest body 10 in the front-rear direction by a desired angle. The tilt angle range of the headrest body 10 is not particularly limited, and can be appropriately set within a range of −15 degrees to +15 degrees, for example.

[Operation of headrest device]
Subsequently, a 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 used, typically, as shown in FIG. 1, the pair of neck support portions 12L and 12R are developed, and each second main surface portion 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.

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

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

  FIG. 7 is a schematic perspective view showing a usage state of the headrest device 100.

  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 shaft 134R (see FIGS. 3 and 4). As a result, the support end portion 121a constituting the lower edge portion of each neck support portion 12L, 12R protrudes forward, and the position inclined obliquely with respect to the headrest portion 11 (first main surface portion 111). Take. As a result, the neck of the user U whose head is supported by the headrest portion 11 is supported so as to be sandwiched from the left and right sides by the support end portions 121a of the neck support portions 12L and 12R.

  Therefore, according to this embodiment, a user's neck can be supported stably. Thereby, the burden of a user's neck and shoulders can be reduced and a more relaxed posture can be realized. In addition, a comfortable seating space can be provided even when riding for a long time such as the Shinkansen or night bus.

  Moreover, according to this embodiment, since the support end part 121a which pinches | interposes the user's U neck is comprised by the peripheral part of neck support part 12L, 12R, without giving a feeling of pressure to a user's shoulder and a temporal region, The user's neck can be pinched from both sides. In addition, 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 rear side, and the feeling of pressure on the neck can be suppressed.

  In addition, the first main surface portion 111 (headrest portion 11) has a substantially isosceles triangular shape with the apex located in the lower portion, and the second main surface portion 121 (neck support portions 12L and 12R) is the first main surface portion. The surface portion 111 has a substantially isosceles triangular shape having a bottom portion facing the oblique side portion. 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 can be stabilized without depending on the thickness and length of the neck of the user U. Can be supported.

Furthermore, the headrest device 100 according to the present embodiment includes a tilt mechanism 30 configured to tilt the headrest body 10 about an axis (X axis) along the width direction with respect to the seat S (base member 20). Prepare. Thereby, since the headrest main body 10 can be inclined in the front-rear direction according to the preference of the user U, a stable fit of the neck can be realized without depending on the seating posture of the user or the angle of the seat back. Can do.
Such a configuration can also be applied to a headrest device in which the neck support portions 12L and 12R are integrally fixed to the headrest portion 11, and similar effects can be obtained in such a case.

  According to the present embodiment, since the headrest body 10 is configured to be tiltable also in the depression direction, even when reading the book by tilting the seat back portion backward or operating the portable information terminal, etc. The neck can be stably supported and the burden on the neck can be reduced.

  Further, since the headrest body 10 is configured to be slidable in the height direction with respect to the seat S via the base member 20, the neck support portions 12 </ b> L and 12 </ b> R are not dependent on the seat height or height of the user U. Thus, the headrest body 10 can be arbitrarily adjusted to a height position where a stable support action at the neck can be obtained.

<Second Embodiment>
8A and 8B are external perspective views showing the configuration of a headrest device 100 according to another embodiment of the present invention, where A shows a non-use time and B shows a use time.
Hereinafter, the configuration different from the first embodiment will be mainly described, and the same configuration as the first embodiment will be denoted by the same reference numeral, and the description thereof will be omitted or simplified.

  The headrest device 200 according to the present embodiment is different from the first embodiment in that the neck support portions 212L and 212R have a bulging portion 122. The bulging portion 122 increases the thickness of the neck support portions 212L and 212R to improve cushioning, and further has an inclined surface 122a that is inclined downward from the second main surface portion 121 toward the first main surface portion 111. .

  The second main surface portion 121 is configured by a flat portion formed on the forefront surface of the bulging portion 122. The second main surface portion 121 is formed substantially in parallel with the first main surface portion 111, and the first main surface portion 111 is also located on the front side. The inclined surface 122a is a region for reducing the thickness of the neck support portions 212L and 212R on the rotating shaft side, and the lower edge portion thereof is configured as a support end portion 121a that supports the user U's neck.

  FIG. 9 is a schematic perspective view showing the usage state of the headrest device 200 configured as described above. As shown in the figure, the headrest device 200 is typically used by turning the neck support portions 212L and 212R to the first position shown in FIG. 8B. Accordingly, the support end portions 121a of the neck support portions 212L and 212R pinch the user U's neck from the left and right sides, and stably support the user's neck. In particular, since the neck support portions 212L and 212R have the bulging portion 122, the second main surface portion 121 can also function as a pillow that supports the cheek or the temporal region of the user U.

<Third Embodiment>
FIG. 10 is a schematic perspective view showing an external configuration of a headrest device 300 according to another embodiment of the present invention.
Hereinafter, the configuration different from the first embodiment will be mainly described, and the same configuration as the first embodiment will be denoted by the same reference numeral, and the description thereof will be omitted or simplified.

  Similarly to the first embodiment, the headrest device 300 according to the present embodiment includes a headrest portion 311, a pair of neck support portions 312 </ b> L and 312 </ b> R disposed on both lower sides of the headrest portion 311, and a pair of neck support portions 312 </ b> L. , 312R includes a rotation mechanism (not shown) configured to be able to rotate between a first position indicated by a solid line and a second position indicated by a two-dot chain line.

  In the present embodiment, the rotation mechanism is arranged in parallel to the width direction (X-axis direction) of the headrest portion 311, whereby the neck support portions 312 </ b> L and 312 </ b> R are perpendicular to the front surface of the headrest portion 311. It is configured to be able to stand up. In addition, support end portions 121a capable of sandwiching the user's neck from both the left and right sides at the first position are provided at the opposing peripheral edge portions of the neck support portions 312L and 312R, respectively.

  Also in the headrest device 300 of the present embodiment configured as described above, the same function and effect as those of the first embodiment can be obtained.

  As mentioned above, although embodiment of this invention was described, this invention is not limited only to the above-mentioned embodiment, Of course, a various change can be added.

  For example, in the above embodiment, the headrest device applicable to a seat for a railway vehicle such as a Shinkansen or an automobile vehicle such as a night bus has been described as an example. The present invention can also be applied to seats that are provided or seats that are provided in a seating area such as a movie theater.

DESCRIPTION OF SYMBOLS 10 ... Headrest main body 11 ... Headrest part 12, 12L, 12R, 212L, 212R, 312L, 312R ... Neck support part 13L, 13R ... Turning mechanism 20 ... Base member 30 ... Tilt mechanism 31 ... Turning shaft 32 ... Torque hinge 100 , 200, 300 ... headrest device 111 ... first main surface portion 121 ... second main surface portion 121a ... support end portion 131L, 131R ... torque hinge 134L, 134R ... rotating shaft 150 ... frame assembly 151 ... first support Frames 152L, 152R ... second support frame 212 ... bulging portion

Claims (6)

A pair of headrest portions having a first main surface portion for supporting the back of the seat user, and a pair of portions arranged on both lower sides of the first main surface portion so that the neck can be sandwiched from both the left and right sides. A headrest body having a neck support portion;
A base member configured to be attachable to a seat and supporting the headrest body;
A tilting mechanism installed between the back surface of the headrest main body and the base member, and configured to tilt the headrest main body about an axis along its width direction with respect to the base member. Headrest device. The headrest device according to claim 1,
Each of the pair of neck support portions includes a second main surface portion and a support end portion constituting one peripheral edge portion of the second main surface portion,
The headrest device includes a pair of the headrest device between a first position where the neck of the seat user is sandwiched from the left and right sides by the support end and a second position where the support end is separated from the neck of the seat user. A headrest device further comprising a rotation mechanism configured to be able to rotate a neck support portion and interconnecting the headrest portion and the pair of neck support portions. The headrest device according to claim 2,
The turning mechanism has a pair of turning shafts for turning the pair of neck support portions around axes parallel to the first main surface portion, respectively.
The support end portion projects forward from the first main surface portion at the first position. The headrest device according to claim 3,
The pair of rotation shafts obliquely intersect a first axis direction parallel to the width direction of the headrest portion, and are disposed symmetrically with respect to a second axis intersecting the first axis. The headrest device according to claim 4,
The first main surface portion has a substantially isosceles triangular shape with the apex located at the lower portion,
The second main surface portion has a substantially isosceles triangular shape having a base portion facing the oblique side portion of the first main surface portion. A headrest device according to any one of claims 1 to 5,
The base member has a guide mechanism that guides movement in a vertical direction with respect to the seat.

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