JP2023164077A - Headrest and vehicle seat - Google Patents

Abstract

To adjust a position of a support part in accordance with physique difference of an occupant; and to store the support part when the support part is unused.SOLUTION: A headrest 24 includes: a headrest body part 40 supporting the head of a seated occupant from a back side; a support part 38; and a position adjustment part 50. The support part 38 is provided movably from a storage position K where it is stored in the headrest body part 40 to the state that it protrudes to the head P1 side of the seated occupant P relative to the headrest body part 40, and supports at least a part of a range from the occipital bone to the cervical part in the head P1 of the seated occupant P. The position adjustment part 50 is provided between the headrest body part 40 and the support part 38 to support the support part 38 movably in a back and forth direction and a vertical direction.SELECTED DRAWING: Figure 6

Description

The present invention relates to a headrest and a vehicle seat.

Patent Document 1 listed below discloses a headrest pillow that can be attached to and detached from a headrest. The headrest pillow described in this document includes a pillow body that supports the head, and a head cushion portion is provided in the upper half of the pillow body. Further, a first belt portion is provided at the upper end of the head cushion portion, and a second belt portion is provided at the lower end portion of the head cushion portion. The headrest pillow is attached to the headrest by wrapping the first belt part and the second belt part around the headrest.

Japanese Patent Application Publication No. 2002-153350

Incidentally, in a headrest that includes a support section that supports the head, it is desirable to be able to adjust the position of the support section according to the physical differences of the occupants, but the headrest pillow described in Patent Document 1 is There is room for improvement in this respect. Further, in a headrest including a support part, it is desirable that the support part can be stored when the support part is not in use.

The present invention takes the above facts into consideration, and provides a headrest and a vehicle seat that can adjust the position of the support part according to the physical differences of occupants, and also can store the support part when the support part is not in use. That is the purpose.

The headrest of the first aspect includes a headrest main body that supports the head of a seated occupant from the rear side, and a headrest that extends from a storage position stored in the headrest main body toward the head of the seated occupant with respect to the headrest main body. a support part that is movably provided in a protruding state and supports at least a part of the range from the occipital bone to the neck in the head of the seated occupant; and a support part that is provided between the headrest main body part and the support part. , a position adjustment section that supports the support section movably in the front-rear direction and the up-down direction.

According to the headrest of the first aspect, the head of the seated occupant is supported from the rear side by the headrest main body. Furthermore, by moving the support section from the storage position to a state where it projects toward the head of the seated occupant, at least a portion of the range from the occipital bone to the neck of the seated occupant's head is supported by the support section. . Here, a position adjustment section is provided between the headrest main body and the support section. Thereby, the support part can be moved in the longitudinal direction and the vertical direction, and the position of the support part can be adjusted according to the physical differences of the seated occupants.

In the headrest of the second aspect, in the headrest of the first aspect, the position adjustment section includes a slide support section that supports the support section so as to be slidable in the front-rear direction, and a slide support section that supports the support section so as to be slidable in the vertical direction. It is configured to include a vertical support portion that supports the device.

According to the headrest of the second aspect, the structure in which the support part is supported by the slide support part and the slide support part is supported by the vertical support part allows the support part to move in the front-rear direction and in the vertical direction. It can be realized.

A vehicle seat according to a third aspect includes a seat cushion that supports the buttocks of a seated occupant from below, a seat back that is attached to a rear part of the seat cushion and supports the back of the seated occupant from the rear side, and the seat back. a headrest attached to the upper part of the headrest, the headrest includes a headrest main body that supports the head of a seated occupant from the rear side, and a headrest main body that supports the head of a seated occupant from a storage position stored in the headrest main body. a support portion that is movably provided to protrude toward the head of the seated occupant and supports at least a portion of the range from the occipital bone to the neck in the head of the seated occupant; A position adjustment part is provided between the support part and supports the support part so as to be movable in the front-rear direction and the up-down direction.

According to the vehicle seat of the third aspect, the buttocks of the seated occupant are supported from below by the seat cushion. Further, the back of the seated occupant is supported from the rear side by the seat back. Further, the head of the seated occupant is supported from the rear side by the headrest main body of the headrest. In addition, by moving the support part of the headrest from the retracted position to a state where it protrudes toward the head of the seated occupant, at least a portion of the range from the occipital bone to the neck of the seated occupant's head is supported by the support part. be done. Here, a position adjustment section is provided between the headrest main body and the support section. Thereby, the support part can be moved in the longitudinal direction and the vertical direction, and the position of the support part can be adjusted according to the physical differences of the seated occupants.

In the vehicle seat according to a fourth aspect, in the vehicle seat according to the third aspect, the seat back is provided so as to be reclinable in the front and back direction with respect to the seat cushion, and the seat back can be reclined to the rear side. The position adjustment section operates in conjunction with the support section to adjust the position of the support section.

According to the vehicle seat of the fourth aspect, when the seat back is reclined toward the rear, the position adjustment section is activated and the position of the support section is adjusted. Thereby, the position of the support portion can be adjusted depending on the reclining angle of the seat back toward the rear side.

In the vehicle seat of the fifth aspect, in the vehicle seat of the fourth aspect, when the reclining angle of the seat back to the rear side exceeds a predetermined angle, the position adjustment section operates, The position of the support part is adjusted.

According to the vehicle seat of the fifth aspect, when the seatback is reclined to the rear and the reclining angle of the seatback to the rear exceeds a predetermined angle, the position adjustment part is activated and the support part The position of is adjusted. Thereby, the position of the support portion can be adjusted depending on the reclining angle of the seat back toward the rear side. Further, when the reclining angle is less than a predetermined angle, the position adjustment section can be prevented from operating.

The headrest and vehicle seat according to the present invention have excellent effects in that the position of the support part can be adjusted according to the physical differences of the occupants, and the support part can be stored when the support part is not in use. has.

FIG. 1 is a side view showing a vehicle seat equipped with a headrest according to a first embodiment. FIG. 2 is a perspective view of the vehicle seat shown in FIG. 1, showing a state in which the support portion is retracted. FIG. 2 is a perspective view of the vehicle seat shown in FIG. 1, showing a state in which a support portion protrudes toward a seated passenger. FIG. 3 is a perspective view showing a position adjustment section and the like of the headrest according to the first embodiment. FIG. 3 is a side view showing a position adjustment section and the like of the headrest according to the first embodiment. FIG. 2 is a side view schematically showing a state in which the headrest of the first embodiment is used. FIG. 7 is a perspective view showing a position adjustment section and the like of a headrest according to a second embodiment. It is a side view which shows the vehicle seat provided with the headrest of 3rd Embodiment. 9 is a side view of the vehicle seat corresponding to FIG. 8, showing a state in which the seat back is reclined rearward from the position shown in FIG. 8. FIG.

(First embodiment)
A headrest 24 according to a first embodiment and a vehicle seat 10 equipped with the headrest 24 will be described using FIGS. 1 to 5.

As shown in FIG. 1, the vehicle seat 10 of this embodiment includes a seat cushion 20 that supports the buttocks of a seated occupant P from below, a seat back 22 that supports the back of the seated occupant P from the rear side, A headrest 24 that supports the head P1 of a seated occupant from the rear side is provided. The seat back 22 can be reclined in the front-rear direction relative to the seat cushion 20. This makes it possible to adjust the reclining angle θs of the seat back 22 with respect to the seat cushion 20. Here, the reclining angle θs refers to the tilting angle of the seat back 22 toward the rear with respect to the vertical direction when viewed from the side of the seat (when viewed from the left or right side). A dashed-dotted line L1 shown in FIG. 1 is a reference line for the reclining angle θs. The dashed-dotted line L1, which is this reference line, corresponds to the backrest surface that constitutes the seat back 22. Here, the backrest surface refers to the center portion in the seat width direction of the surface of the seat back 22 that supports the lumbar region of the seated occupant P from the rear side of the seat. The reclining angle θs is measured with no occupant seated on the vehicle seat 10. Note that arrow FR, arrow UP, arrow RH, and arrow LH shown in the figure indicate the front side and upper side of the seat as seen from an occupant seated in the vehicle seat 10 in which the reclining angle of the seat back 22 is set to a reference angle described later. side, right side and left side are shown respectively. Hereinafter, when a description is made simply using front and rear, up and down, and left and right directions, unless otherwise specified, the front and back of the seat front and back direction, the top and bottom of the seat up and down direction, and the left and right of the seat left and right directions are meant, unless otherwise specified. In addition, the front and rear directions of the seat, the up and down directions of the seat, and the left and right directions of the seat left and right directions coincide with the front and back, up and down, and right and left directions of the headrest 24.

As shown in FIGS. 1 to 4, the headrest 24 includes a headrest main body portion 40, a headrest stay 26, a support portion 38, and a position adjustment portion 50.

As shown in FIGS. 2 and 3, the headrest main body 40 has a structure in which a skin material is attached to a headrest pad formed in a predetermined shape. A storage recess 40A is formed in the center of the lower part of the headrest main body 40 in the left-right direction, and is open on the lower side, the front side, and the rear side. A support section 38, which will be described later, is housed in this storage recess 40A.

As shown in FIG. 4, the headrest stay 26 is formed by bending a metal rod-like member, and is formed into a U-shape with an open lower side. The headrest stay 26 includes a first stay part 26A that extends in the left-right direction, and a pair of left and right second stay parts 26B that extend downward from both left and right ends of the first stay part 26A. The headrest main body portion 40 is fixed to the upper portions of the first stay portion 26A and the pair of left and right second stay portions 26B.

As shown in FIGS. 1 to 3, the support section 38, like the headrest main body section 40, has a structure in which a skin material is attached to a pad formed in a predetermined shape. The front end portion 38A of the support portion 38 is a portion that supports at least a portion of the head P1 of the seated occupant P from the occipital bone to the neck. A recess 38B is formed in the center of the front end portion 38A of the support portion 38 in the left-right direction.The recess 38B is open on the front side and the upper side. At least a portion of the head P1 of the seated occupant P from the occipital bone to the neck fits into this depression 38B.

As shown in FIGS. 2 to 4, the position adjustment section 50 is provided between the headrest main body section 40 and the support section 38, and supports the support section 38 so as to be movable in the front-back direction and the up-down direction. As shown in FIG. 4, the position adjustment section 50 includes a slide support section 52 that supports the support section 38 so as to be slidable in the front-back direction, and an up-down support section 54 that supports the slide support section 52 so that it can move in the up-down direction. It is composed of and.

The slide support portion 52 is locked to a pair of left and right slide bases 56 fixed to the headrest stay 26, a pair of left and right slide pins 58 fixed to the pair of left and right slide bases 56, and a pair of left and right slide pins 58. and a sliding plate 60.

The pair of left and right slide bases 56 are formed by bending a rectangular metal plate into an L-shape. One end portions of the pair of left and right slide bases 56 are respectively fixed to the pair of left and right second stay portions 26B of the headrest stay 26 by welding or the like. Furthermore, a pair of left and right slide pins 58 are inserted and fixed to the other end portions of the pair of left and right slide bases 56 . The pair of left and right slide pins 58 protrude from the other ends of the pair of left and right slide bases 56 toward the center in the seat width direction.

The slide plate 60 is formed by bending a metal plate having a predetermined shape. This slide plate 60 includes a pair of left and right rail portions 60A arranged at intervals in the left and right direction, a left and right connecting portion 60B that connects the front ends of the rail portions 60A in the left and right direction, and a left rail portion 60A in the front and back direction. A connecting portion 60C extending from the intermediate portion of the connecting portion 60C.

The pair of left and right rail portions 60A are formed in a rectangular plate shape extending in the front-rear direction with the left-right direction as the thickness direction. Furthermore, long holes 60D whose longitudinal direction is the front-rear direction are formed in the pair of left and right rail portions 60A, respectively. By inserting the pair of left and right slide pins 58 into the long holes 60D of the pair of left and right rail portions 60A, the slide plate 60 can slide (move) in the front-rear direction with respect to the headrest stay 26. It has become. Further, as shown in FIGS. 2 to 4, the above-mentioned support section 38 is attached to the slide plate 60. This allows the support portion 38 to move in the front-rear direction together with the slide plate 60.

As shown in FIG. 4, the end of the connecting portion 60C on the side opposite to the left rail portion 60A is bent upward between the pair of left and right rail portions 60A. A lower end portion of a connecting plate 64, which will be described later, is rotatably connected to the end of the connecting portion 60C on the side opposite to the left rail portion 60A, with the left-right direction being an axial direction.

As shown in FIGS. 4 and 5, the vertical support section 54 includes a support base 62 fixed to the headrest stay 26, a connecting plate 64 connected to the supporting base 62, and a ratchet fixed to the connecting plate 64. It is configured to include a plate 66 and a ratchet piece 68 supported by a support base 62.

The support base 62 is formed by bending a metal plate having a predetermined shape. The support base 62 includes a fixing plate portion 62A fixed to the center portion of the first stay portion 26A of the headrest stay 26 in the left-right direction by welding or the like. Further, the support base 62 includes a pair of left and right support plate portions 62B that extend downward from both end portions in the left and right direction of the fixed plate portion 62A.

The connecting plate 64 is formed into a rectangular plate shape whose longitudinal direction is the vertical direction. As described above, the lower end portion of the connecting plate 64 is rotatably connected to the connecting portion 60C of the slide plate 60 with the left-right direction as the axial direction. Further, the upper end portion of the connecting plate 64 is arranged between the pair of left and right support plate portions 62B of the support base 62, and is rotatably connected to the pair of left and right support plate portions 62B with the left and right direction as an axial direction. ing.

As shown in FIG. 5, the ratchet plate 66 is formed using the same metal plate as the connecting plate 64. This ratchet plate 66 is fixed to the upper end of the connecting plate 64 by welding or the like. Further, the ratchet plate 66 is disposed between the pair of left and right support plate portions 62B of the support base 62, and is rotatably connected to the pair of left and right support plate portions 62B with the left and right direction as an axial direction. A plurality of ratchet teeth 66A are formed at the upper end of the ratchet plate 66. A ratchet piece 68, which will be described later, meshes with the ratchet teeth 66A.

The ratchet piece 68 is formed using the same metal plate as the ratchet plate 66. This ratchet piece 68 is disposed above the ratchet plate 66 and between the pair of left and right support plate portions 62B of the support base 62. Further, the upper end portion of the ratchet piece 68 is rotatably connected to a pair of left and right support plate portions 62B with the left and right direction as an axial direction. Further, the lower end portion of the ratchet piece 68 is adapted to mesh with the ratchet teeth 66A of the ratchet plate 66.

When the lower end of the ratchet piece 68 is engaged with the ratchet teeth 66A of the ratchet plate 66, the counterclockwise rotation of the ratchet plate 66 is restricted as seen from the left side. On the other hand, when the ratchet plate 66 rotates clockwise as seen from the left side, the lower end of the ratchet piece 68 passes over the ratchet teeth 66A of the ratchet plate 66, and the lower end of the ratchet piece 68 moves over the other ratchet teeth 66A. It is designed to mesh with the Note that the lower end of the ratchet piece 68 can be removed from the ratchet teeth 66A of the ratchet plate 66 by operating a release operation section (not shown).

(Actions and effects of this embodiment)
Next, the operation and effects of this embodiment will be explained.

As shown in FIG. 1, in the vehicle seat 10 of the present embodiment described above, the buttocks, back, and head P1 of the seated occupant P are supported by the seat cushion 20, the seat back 22, and the headrest 24.

Here, as shown in FIG. 2, when the support part 38 does not need to be used, the support part 38 is stored in the storage recess 40A of the headrest main body part 40. Note that the position of the support portion 38 in a state where the support portion 38 is stored in the storage recess 40A of the headrest main body portion 40 will be referred to as a storage position K. When the support portion 38 is located at the storage position K, the front end portion 38A of the support portion 38 does not protrude forward with respect to the headrest main body portion 40.

Moreover, as shown in FIG. 3, when it is necessary to use the support part 38, the support part 38 is moved from inside the storage recess 40A of the headrest main body part 40 to the front side. Note that the support portion 38 may be moved manually or automatically by a motor or the like.

As shown in FIGS. 5 and 6, when the support section 38 is moved forward from the storage position K, the slide plate 60 is also moved forward. When the slide plate 60 is moved forward, the connecting plate 64 tilts to the right side and the ratchet plate 66 rotates clockwise as seen from the left side. The lower end of the ratchet piece 68 meshes with the ratchet teeth 66A of the ratchet plate 66, thereby restricting the counterclockwise rotation of the ratchet plate 66. This restricts the rearward movement of the slide plate 60, and restricts the rearward movement of the support portion 38. Thereby, the state in which the front end portion 38A of the support portion 38 protrudes forward with respect to the headrest main body portion 40 is maintained. As a result, at least a portion of the head P1 of the seated occupant P from the occipital bone to the neck can be supported by the support portion 38.

By the way, in this embodiment, when the support part 38 is moved from the storage position K to the front side, the support part 38 is tilted so that the front end part 38A of the support part 38 moves downward as seen from the left side. Note that the above-described movement trajectory of the support portion 38 can be realized by appropriately setting the dimensions and posture of the connection plate 64 (the posture of the connection plate 64 when the support portion 38 is located at the storage position K). is possible.

As shown in FIG. 6, in this embodiment, the amount of forward protrusion of the front end portion 38A of the support portion 38 from the headrest main body portion 40 and the vertical position of the front end portion 38A of the support portion 38 are adjusted. Accordingly, the longitudinal and vertical positions of the front end portion 38A of the support portion 38 can be adjusted according to the physical differences of the seated occupant P. In addition, in FIG. 6, a large-sized occupant P and a small-sized occupant P are illustrated in an overlapping manner.

Further, in this embodiment, the support part 38 is supported by the slide plate 60 of the slide support part 52, and the slide plate 60 is supported by the vertical support part 54, so that the support part 38 can be moved in the front-rear direction and Movement in the vertical direction can be realized.

(Headrest position adjustment section 50 of the second embodiment)
Next, the headrest position adjustment section 50 of the second embodiment will be explained. In the headrest position adjustment section 50 of the second embodiment, the members and parts corresponding to the position adjustment section 50 of the headrest 24 of the first embodiment described above are the same as the position adjustment section 50 of the headrest 24 of the first embodiment. The same reference numerals as corresponding members and portions may be used, and the description thereof may be omitted.

As shown in FIG. 7, in the slide support section 52 of the position adjustment section 50 of this embodiment, a lock section 70 is provided between the pair of left and right slide pins 58 and the slide plate 60. By having this lock portion 70, it is possible to maintain the position of the slide plate 60 in the front-rear direction at an arbitrary position.

Furthermore, a connecting portion 60C is fixed to the upper surface of the left-right connecting portion 60B of the slide plate 60. The connecting portion 60C of this embodiment is formed by bending a metal bar-shaped member, and is formed in a U-shape with an open lower side when viewed from the left and right. The lower end of this connecting portion 60C is joined to the upper surface of the left-right connecting portion 60B of the slide plate 60 by welding or the like.

The vertical support portion 54 of this embodiment includes a support base 62, a connection member 72 connected to the support base 62, and a fishing member 74 connected to the connection member 72.

The upper end of the connecting member 72 is rotatably supported by the support base 62 with the left-right direction as an axial direction. Here, a ratchet mechanism is provided between the connecting member 72 and the support base 62. By having this ratchet mechanism, it is possible to maintain the position of the connecting member 72 relative to the support base 62 at a predetermined position. Note that the ratchet mechanism has the same configuration as that using the ratchet plate 66 and ratchet piece 68 described above.

The fishing member 74 includes a fishing member 76 formed in a plate shape. The fishing top plate 76 includes a bottom wall portion 76A that extends in the left-right direction in the vertical direction and the thickness direction, and a pair of left and right side wall portions that extend upward from both ends of the bottom wall portion 76A in the left-right direction. 76B. The bottom wall portion 76A side of the pair of left and right side wall portions 76B are connected in the left-right direction via a rod-shaped connecting shaft member 78. The upper portion of the above-mentioned connecting portion 60C is arranged between the bottom wall portion 76A of the fishing top plate 76 and the connecting shaft member 78. Further, the upper portions of the pair of left and right side wall portions 76B are rotatably connected to the lower end portions of the connecting member 72 with the left and right direction as an axial direction.

In the position adjustment section 50 of the present embodiment described above, the position of the slide plate 60 in the front-rear direction can be maintained at an arbitrary position by the lock section 70. Further, in the position adjustment section 50 of this embodiment, the vertical support section 54 is configured to lift the slide plate 60. By changing the attitude of the connecting member 72 of the vertical support section 54 with respect to the support base 62, the vertical position of the slide plate 60 can be adjusted. This makes it possible to adjust the position of the support portion 38 (see FIG. 3, etc.) in the front-rear direction and the up-down direction.

Even in the configuration having the position adjustment section 50 of the present embodiment described above, the position of the support section 38 can be adjusted according to the physical differences of the occupants, and when the support section 38 is not in use, the support section 38 can be adjusted. can be stored.

(Headrest 24 of the third embodiment)
Next, a headrest 24 according to a third embodiment will be described. In the headrest 24 of the third embodiment, members and parts corresponding to the headrest 24 of the first embodiment described above are given the same reference numerals as the members and parts corresponding to the headrest 24 of the first embodiment. Explanation may be omitted.

As shown in FIGS. 8 and 9, when moving the support part 38 toward the head P1 of the seated occupant P, the position adjustment part 50 of the headrest 24 of the present embodiment adjusts the position of the front end 38A of the support part 38 to It is configured to include a link mechanism 80 that moves the support part 38 in the same trajectory as the support part 38 of the first embodiment. In this embodiment, the link mechanism 80 is automatically operated by a motor or the like.

Further, in the present embodiment, when the reclining angle θs of the seat back 22 exceeds 30 degrees rearward with respect to the reference angle, the motor etc. are activated and the link mechanism 80 is activated. Here, the reclining angle θs of the seat back 22 shown in FIG. 8 is a reference angle. When the reclining angle θs of the seat back 22 is the reference angle, the seated occupant P can visually recognize the front side of the vehicle.

Further, as shown in FIG. 9, in the present embodiment, when the reclining angle θs of the seatback 22 exceeds 30° rearward with respect to the reference angle, the support portion 38 It is placed in the most prominent position to the side.

In the present embodiment described above, the position of the support portion 38 can be adjusted depending on the rearward reclining angle θs of the seat back 22. Further, when the reclining angle θs is less than 30°, the position adjustment section 50 can be prevented from operating.

In addition, in the present embodiment described above, when the reclining angle θs of the seat back 22 exceeds 30 degrees rearward with respect to the reference angle, the support portion 38 protrudes the most toward the head P1 side of the seated occupant P. Although an example has been described in which the parts are placed at different positions, the present invention is not limited thereto. For example, as the reclining angle θs of the seat back 22 increases from the reference angle, the support portion 38 may gradually move toward the head P1 of the seated occupant P.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and can be implemented with various modifications other than the above without departing from the spirit thereof. Of course.

10 Vehicle seat 20 Seat cushion 22 Seat back 24 Headrest 38 Support section 40 Headrest main body section 50 Position adjustment section 52 Slide support section 54 Vertical support section P Seated occupant P1 Head K Storage position θs Reclining angle

Claims (5)

a headrest main body that supports the head of a seated occupant from the rear side;
The headrest is provided movably from a stored position stored in the headrest main body to a state protruding toward the head of the seated occupant with respect to the headrest main body, and extends from the occipital bone to the neck in the head of the seated occupant. a support portion that supports at least a portion of the range;
a position adjustment part that is provided between the headrest main body part and the support part and supports the support part so as to be movable in the front-rear direction and the up-down direction;
headrest with. The position adjustment section is configured to include a slide support section that supports the support section so as to be slidable in the front-back direction, and a vertical direction support section that supports the slide support section so as to be movable in the up-down direction. Headrest according to item 1. a seat cushion that supports the buttocks of a seated occupant from below;
a seat back that is attached to the rear part of the seat cushion and supports the back of the seated occupant from the rear side;
a headrest attached to the top of the seat back;
Equipped with
The headrest is
a headrest main body that supports the head of a seated occupant from the rear side;
The headrest is provided movably from a stored position stored in the headrest main body to a state protruding toward the head of the seated occupant with respect to the headrest main body, and extends from the occipital bone to the neck in the head of the seated occupant. a support portion that supports at least a portion of the range;
a position adjustment part that is provided between the headrest main body part and the support part and supports the support part so as to be movable in the front-rear direction and the up-down direction;
A vehicle seat equipped with The seat back is provided so as to be reclinable in the front-rear direction with respect to the seat cushion,
4. The vehicle seat according to claim 3, wherein the position adjustment section operates in conjunction with rearward reclining of the seat back to adjust the position of the support section. 5. The vehicle seat according to claim 4, wherein when the reclining angle of the seat back to the rear exceeds a predetermined angle, the position adjustment section is actuated to adjust the position of the support section.