JPH1023941A - Head rest system for seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust a head rest body through vertical movement corresponding to the physique of a sitting person having a different height by forming the head rest body so as to adjust its inclination angle into an upright position and forward inclining position and holding it so as to adjust the vertical position. SOLUTION: A head rest system 30 is constituted by providing a head rest body 40 mounted at the upper end part of a back rest 20 so as to hold the back of the head of a sitting person. Then, that head rest body 40 is held so as to incline into the rising state and forward inclining state, to adjust its angle and to adjust its vertical position. Thus, while the sitting person takes a reclining attitude, the head rest body 40 holds the head of the sitting person in the rising attitude, the sitting person can watch a television or can read a book in the easy attitude while taking the reclining attitude, and convenience can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headrest device for a seat having a stool and a backrest.

[0002]

2. Description of the Related Art As a conventional seat headrest device, for example, a stool is mounted on a vehicle such as an aircraft, and a backrest is operable to recline and is mounted on the backrest. Headrest devices include those in which the headrest body can be adjusted vertically and those in which the tilt angle in the front-back direction can be adjusted. Further, a pair of ear support bodies for supporting around the ears and the temporal region of the seated person are provided together with the headrest device, and the pair of ear support bodies are respectively rotatable, and the pair of ear support bodies are opened. Some have adjustable angles. The pair of ear support bodies can block a view of an adjacent occupant, secure a private space, and are also used for a kind of private protection purpose.

[0003]

However, in such a conventional headrest device for a seat, if the headrest body cannot be adjusted vertically, the headrest body is adjusted vertically according to the physique of a seated person having a different height. If the headrest body cannot be tilted in the front-rear direction and the angle cannot be adjusted, the headrest should be used to watch TV or read a book when the seated person is reclining backward and leaning back. When tilting the headrest body, the tilt angle of the headrest body cannot be adjusted, and if the seated person raises his head without watching the headrest body properly and continues to watch TV, his neck etc. becomes tired and usability increases. not good. Further, if the ear support body can only adjust the opening angle, for example, the ear support body cannot be moved up and down according to the vertical movement position of the headrest body, and the ear support body maintains the original vertical position. The ear support body comes off the ears and the temporal area of the seated person, making it difficult to properly support the ear area and the temporal area of the seated person, and making it difficult for the ear support body to secure a private space. There was a problem that private protection was not sufficiently provided.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and is intended to support a headrest body in an upright state, a forwardly inclined state, a tilt angle adjustable, and a vertical position adjustable. The headrest body can be adjusted up and down according to the physique of the occupant whose height is different, and the headrest body is seated when the occupant is in a reclining position by adjusting the tilt angle of the headrest body. The head of the person in a raised position,
You can watch TV and read books in a comfortable posture while taking a reclining posture, which can improve usability. In addition, the ear support body can be adjusted not only for opening angle but also for vertical position, for example, moving the ear support body up and down according to the vertical movement position of the headrest body, and moving the headrest body up and down to the position of the back of the seated person In addition, the ear support body can be moved up and down to the position of the occupant's ears and the side of the head to properly support not only the back of the occupant's head but also the ears and the side of the head, further securing private space It is an object of the present invention to provide a headrest device for a seat that can maintain a state of being kept private and sufficiently protect private.

[0005]

SUMMARY OF THE INVENTION The gist of the present invention for solving the above problems lies in the matters described in the following items. [1] In a headrest device for a seat including a stool (10) and a backrest (20), the headrest device (30) is mounted on an upper end portion of the backrest (20), and holds the back of a seated person. Headrest body to support (4
0), wherein the headrest body (40) is supported so that the tilt angle can be adjusted and the vertical position can be adjusted between an upright state and a forwardly inclined state.

[2] In a headrest device for a seat including a stool (10) and a backrest (20), the headrest device (30) is provided with the headrest (2).
0) The headrest body (40), which is mounted on the upper end portion and supports the back of the occupant's head, and a pair of ear support bodies (50) that support the occupant's ears and the temporal region. The headrest device for a seat, wherein the headrest body (40) and the pair of ear support bodies (50) are supported so as to be vertically adjustable.

[3] In a headrest device for a seat including a stool (10) and a backrest (20), the headrest device (30) includes the seatrest (2).
0) The headrest body (40), which is mounted on the upper end portion and supports the back of the occupant's head, and a pair of ear support bodies (50) that support the occupant's ears and the temporal region. The headrest body (40) is supported so that the tilt angle can be adjusted between an upright state and a forwardly inclined state, and the headrest body (40) and the pair of ear support bodies (50).
Are headrest devices for seats, each of which is supported so that the vertical position can be adjusted.

[4] The pair of ear supports (5)
0) The headrest body (40) is integrally supported on the headrest body (40) so that the vertical position can be adjusted.
Or the headrest device for a seat according to 3.

[5] The pair of ear supports (5)
0) The headrest body (40) is supported so as to be vertically adjustable with respect to the headrest body (40).
The headrest device for a seat according to claim 3 or 4.

[6] The pair of ear supports (5)
0) is characterized in that it is supported on the headrest body (40) side so that the opening angle can be adjusted between a closed state in which the distance between the two is narrowed and a distance between the two is narrowed and an open state in which the distance between the two is widened. The headrest device for a seat according to claim 2, 3, 4, or 5.

Next, the operation of the invention described in each of the above items will be described. In the headrest device for a seat according to the item [1], since the headrest body (40) is supported so that the tilt angle can be adjusted and the vertical position can be adjusted between the upright state and the forwardly inclined state, the height of the seated person can be different. The headrest body (40) can be adjusted up and down according to the physique, and the inclination angle of the headrest body (40) can be adjusted. When the seated person is in a reclining posture, the headrest body (40) can be adjusted. However, it becomes possible to support the posture in which the head is raised, so that the seated person can watch television or read a book in a comfortable posture.

[0012] In the headrest device for a seat according to the item [2], the headrest body (40) and the pair of ear support bodies (50) are supported so that the vertical position can be adjusted. The ear support body (50) is moved up and down according to the up and down movement position,
The headrest body (40) can be moved up and down to the position of the back of the head of the seated person, and the ear support body (50) can be moved up and down to the position near the ears and the temporal region of the seated person. The ear support body (50) can always properly support not only the occipital region but also the ears and the temporal region, and the ear support body (50) can always block the view of the adjacent occupant. The private space can be kept in a state where the private space is secured, and the private can be sufficiently protected.

[0013] In the headrest device for a seat according to the item [3], since the headrest body (40) is supported so as to be adjustable between a standing state and a forwardly inclined state, the inclination angle of the headrest body (40) can be adjusted. Can be adjusted so that the headrest body (40) can support the head-raised position when the occupant is in a reclining position, allowing the occupant to watch television or read a book in a comfortable position. can do. In addition, since the headrest body (40) and the pair of ear support bodies (50) are supported so that the vertical position can be adjusted, the headrest body (40) and the pair of ear support bodies (50) are always appropriately supported not only at the back of the seated person but also around the ears and the temporal region. In addition, the ear support body (50) always blocks the view of the next seated person, so that the state of the seated person cannot be seen from the next seated person, and a private space is secured. Can be kept private and can be protected sufficiently.

[0014] In the headrest device for a seat according to the item [4], since the pair of ear supports (50) are integrally supported by the headrest body (40) so that the vertical position can be adjusted, the headrest body (40). ) Is adjusted in the vertical direction, and at the same time, a pair of ear support bodies (50)
Can also be moved and adjusted in the vertical direction, so that it is not necessary to separately adjust the position, thereby improving usability.

In the headrest device for a seat according to the item [5], the pair of ear supports (50) are supported so as to be vertically adjustable with respect to the headrest body (40). When the (50) and the headrest body (40) are moved and adjusted in the same manner in the vertical direction, for example, if the vertical position of the pair of ear support bodies (50) is somewhat uncomfortable due to the preference of the seated person, The vertical position of the ear support (50) can be finely adjusted.

[0016] In the headrest device for a seat according to the item [6], the pair of ear supports (50) are closed to each other on the headrest body (40) side to reduce the distance between them, The opening angle of the pair of ear supports (50) is adjusted so as to adjust the opening angle of the pair of ear supports (50). And the degree to which the ear support body (50) blocks the view of the next occupant can be changed,
Private can be secured appropriately.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Each drawing shows an embodiment of the present invention. As shown in FIGS. 1 to 3, a large number of seats 10a are arranged in a cabin of an aircraft. Two seats 10
a are adjacent to each other, and the seat 10
The seat cushion 12 is supported by a bottom frame 11, and each bottom frame 11 is supported by an underframe 13. The rear end of the bottom frame 11
Are supported so as to be capable of falling between a standing state (a state shown by a solid line in FIG. 2) and a reclining state (a state shown by an imaginary line in FIG. 2).

An armrest 14 serving as a center armrest is fixed to an adjacent side of the bottom frame 11, and an armrest 14a serving as a side armrest is also fixed to a side opposite to the adjacent side. A leg support member 15 is swingably supported by the underframe 13 at a storage position where the leg support member 15 is suspended at a position in front of the stool 10 and at a use position where the leg support member 15 is deployed forward of the seat cushion 12. Leg support member 1
5 includes a retracted state in which the step member 16 as a footrest is tilted backward (a state shown by imaginary lines in FIG. 2), and a use state inclined forward (a state shown by solid lines in FIG. 2). It is swingably supported.

The backrest 20 comprises a back structure 21 covered by a back cushion 22 and a display member 23 from the front. A support portion 26 that supports a portion extending from the lumbar spine to the back of the seated person is formed in the center of the front surface of the backrest 20. As shown in FIG. 1 and FIGS. 4 to 7, an accommodation recess 27 which is recessed rearward is formed at the upper end of the back cushion 22. The back structure 21
The front panel 21 is formed in an elongated rectangular horizontal section.
a, rear panel 21b, side panel 21c and upper panel 2
1d. An elongated internal space 21e is formed between the front panel 21a and the rear panel 21b.

The front panel 21a of the back structure 21
Is formed with a pair of guide rails 24 extending in the vertical direction, respectively, on the inner surface of the rear panel 21b of the back structure 21. On the upper panel 21d of the back structure 21, a groove 25 for movement which is opened upward is formed. The accommodation recess 27 of the back cushion 22 accommodates the headrest device 30 and a pair of ear support bodies 50 located on both sides of the headrest device 30. Headrest device 30
Has a headrest body 40 serving as a main body, and the headrest body 40 passes through the groove 25 for movement, and is vertically movable to the outer space side and the inner space 21e side of the back structure 21. 41 and up and down base 4
1 includes a tilt base 42 supported by a ratchet mechanism via a tilt mechanism, a head cushion 43 and a skin member 44 that cover the tilt base 42 from the front.

The ratchet mechanism restrains the tilting base 42 at each tilting position according to the occupant's preference. When the ratchet wheel having teeth connected to the outer periphery thereof and the headrest body 40 are tilted. And a pawl member that gradually engages with each tooth of the ratchet wheel. A pair of slide rails 45 are fixed to the rear surface of the up-down base 41 so as to correspond to the pair of guide rails 24. The guide rail 24 and the slide rail 45 are firmly fitted so that a frictional resistance is generated between them. Each slide rail 45 moves up and down steplessly against each guide rail 24 against the frictional resistance.
The size of the headrest body 40 is set to be equal to or greater than the force in the direction in which the headrest body 40 falls due to its own weight.

That is, the headrest body 40 can be vertically adjusted in a stepless manner. For example, a plurality of engaging grooves are formed in the guide rail 24 in the longitudinal direction of the rail, and the locking members are provided in the plurality of engaging grooves. Are configured to engage as appropriate,
The vertical position of the headrest body 40 may be adjusted stepwise. Block-shaped ear support guides 46 are fixed to both side edges of the vertical movement base 41, and guide holes 47 extending in the vertical direction are formed in the ear support guides 46. A reinforcing member 48 extends from the lower edge of the vertically moving base 41 along the lower edge.

The pair of ear support bodies 50 is composed of an ear frame 51 and an ear cushion 52 and a skin member 53.
The ear frame 51 has a guide hole 47
Is fixedly mounted. Guide hole 47
And the pivot shaft 57 are firmly fitted so that a frictional force is generated between them. The frictional force is both a frictional force in the rotating direction when the pivot shaft 57 rotates around the axis and an axial frictional force when the pivot shaft 57 moves in the axial direction. The frictional force in the rotating direction is set to a force or more that does not change the opening angle of the ear support body 50 without opening / closing operation by the reaction force when the ear support body 50 supports the vicinity of the ear of the seated person. , The axial frictional force is
Is set to be greater than the force in the direction of falling by its own weight. As shown in FIG. 8, both frictional forces are
It is adjusted by the tightening force of the adjuster screw 58.
The pivot shaft 57 is urged upward by a coil spring (not shown).

Next, the operation of the present embodiment will be described. To adjust the headrest body 40 up and down according to the physique of the occupant having different heights, the headrest body 40
, And the headrest body 40 may be moved up and down against the frictional force between the guide rail 24 and the slide rail 45. When the headrest body 40 is adjusted to the desired vertical position of the occupant, the headrest body 40 is restrained at the desired vertical position by the frictional force between the guide rail 24 and the slide rail 45. At this time, the headrest body 40
The pair of ear support bodies 50 on both sides of the headrest body 4
It moves up and down integrally with 0.

To adjust the inclination angle of the headrest body 40, the headrest body 40 is
0 may be tilted in the front-rear direction. As a result, the pawl members are successively engaged with the teeth of the ratchet wheel of the ratchet mechanism, and when the headrest body 40 is tilted to the tilt angle desired by the occupant, the tooth of the ratchet wheel corresponding to the tilt angle is formed. The claw members are engaged, and the headrest body 40 is restrained at its tilt angle position by the ratchet mechanism. Thereby, even when the occupant takes the reclining posture and raises his / her head, the headrest body 40 can appropriately support the head according to the degree of raising of the head.
The user can watch television and read books in an easy posture in which the head is supported by the headrest body 40.

The pair of ear supports 50 on both sides of the headrest body 40 move up and down together with the headrest body 40, so that the headrest body 40 is moved up and down to the back of the head of the seated person. The ear support body 50 moves up and down to the position of the temporal region. As a result, not only the back of the head of the seated person but also the ears and the temporal region can always be properly supported, and the ear support body 50 always blocks the view of the adjacent seated person. Can be kept invisible from the next occupant, the private space can be maintained, and the private can be sufficiently protected.

Since the pair of ear supports 50 on both sides of the headrest body 40 move up and down together with the headrest body 40, if the headrest body 40 is adjusted in the up and down direction, the pair of ear support bodies 50 are also moved in the up and down direction at the same time. It can be moved and adjusted, so that it is not necessary to separately adjust the position, thereby improving the usability.

On the other hand, when the pair of ear support members 50 are vertically moved and adjusted integrally with the headrest member 40, for example, the pair of ear support members 5
If there is a sense of incongruity in the vertical position of 0, the vertical position of the pair of ear support bodies 50 may be finely adjusted. That is, the ear support body 50 may be gripped and moved up and down around the pivot shaft 57 against the frictional force between the guide hole 47 and the pivot shaft 57. Accordingly, the pivot shaft 57 moves up and down with respect to the guide hole 47, and thus the pair of ear support bodies 50 can move up and down with respect to the headrest body 40.

Further, in order to adjust the opening angle of the pair of ear supports 50 and to adjust the feeling of support of the ear supports 50 to the occupant's preference, grasp one or both of the pair of ear supports 50. Then, the ear support body 50 may be rotated about the pivot shaft 57. As a result, the ear support body 50 is connected to the guide hole 47 and the pivot shaft 5.
7 rotates against the frictional force between the
0 is adjusted to the occupant's favorite opening angle.

Further, by changing the opening angle of the ear support body 50, the degree to which the ear support body 50 blocks the field of view of the next occupant can be changed, and if necessary, the private can be secured. In the above-described embodiment, the one in which the pivot shaft 57 of the ear support body 50 is fitted and supported in the guide hole 47 of the ear support guide 46 of the headrest body 40 is shown. 50 may be directly supported.

[0031]

According to the headrest device for a seat according to the present invention, the headrest body is supported so as to be adjustable in the upright state, the forwardly inclined state, the inclination angle, and the up and down position, so that the height and the like can be reduced. The headrest body can be adjusted up and down according to the physique of different occupants, and the headrest body can adjust the tilt angle of the headrest body so that when the occupant is in a reclining posture, the headrest body holds the occupant's head. By supporting the user in the upright posture, the user can watch television and read a book in a comfortable posture while taking the reclining posture, thereby improving usability.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a seat headrest device showing an embodiment of the present invention.

FIG. 2 is a side view of a seat showing one embodiment of the present invention.

FIG. 3 is a front view of a seat showing one embodiment of the present invention.

FIG. 4 is a front view of a backrest of a seat showing one embodiment of the present invention.

FIG. 5 is a cross-sectional view of a main part of the backrest of the seat, showing one embodiment of the present invention.

FIG. 6 is a plan view of a seat headrest device showing an embodiment of the present invention.

FIG. 7 is a structural explanatory view of a seat ear support according to the embodiment of the present invention.

FIG. 8 is a perspective view of a main part of a headrest device for a seat showing one embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10a ... Seat 10 ... Stool 11 ... Bottom frame 12 ... Seat cushion 13 ... Underframe 15 ... Leg support member 20 ... Back rest 21 ... Back structure 22 ... Back cushion 23 ... Display member 24 ... Guide rail 25 ... Groove for movement DESCRIPTION OF SYMBOLS 30 ... Headrest device 40 ... Headrest body 41 ... Vertical moving base 43 ... Head cushion 44 ... Skin member 45 ... Slide rail 46 ... Ear support guide 47 ... Guide hole 50 ... Ear support body 51 ... Ear frame 52 ... Ear cushion 53 ... Skin Member 57: pivot shaft

Claims (6)

[Claims] 1. A headrest device for a seat including a stool and a backrest, wherein the headrest device has a headrest body mounted on an upper end of the backrest and capable of supporting a back of a seated person. The headrest device for a seat, wherein the headrest body is supported so that a tilt angle can be adjusted between an upright state and a forwardly inclined state and a vertical position can be adjusted. 2. A headrest device for a seat comprising a stool and a backrest, wherein the headrest device is mounted on an upper end portion of the backrest and supports a back of a seated person, and an ear of the seated person. A headrest for a seat, comprising: a pair of ear support bodies for supporting the vicinity and the temporal region, wherein the headrest body and the pair of ear support bodies are respectively supported so as to be vertically adjustable. apparatus. 3. A headrest device for a seat comprising a stool and a backrest, wherein the headrest device is mounted on an upper end of the backrest and supports a back of a seated person, and an ear of the seated person. The headrest body is supported so as to be capable of adjusting a tilt angle between an upright state and a forwardly inclined state, and the headrest body and the pair of ear supports are provided. A headrest device for a seat, wherein each of the bodies is supported so as to be vertically adjustable. 4. A headrest device for a seat according to claim 2, wherein said pair of ear supports are supported integrally with said headrest so as to be vertically adjustable. 5. The headrest device for a seat according to claim 2, wherein the pair of ear supports are supported so as to be vertically adjustable with respect to the headrest. 6. The pair of ear support bodies are supported on the headrest body side so as to be able to adjust an opening angle between a closed state in which they are closed to each other to reduce the distance therebetween and an open state in which they are opened to each other to increase the distance therebetween. The seat headrest device according to claim 2, 3, 4, or 5, wherein: