WO2011125182A1

WO2011125182A1 - Seat adjustment device and seat

Info

Publication number: WO2011125182A1
Application number: PCT/JP2010/056255
Authority: WO
Inventors: 栄司竹内; 晃輝功刀; 豊末永
Original assignee: トヨタ自動車株式会社
Priority date: 2010-04-06
Filing date: 2010-04-06
Publication date: 2011-10-13

Abstract

A seat adjustment device is provided with: a wire (11) which is connected to a load receiving section (6) provided within the backrest (3) of the seat (1); and a rotation body (12) around which the wire (11) is wound and which, when rotated, moves the load receiving section (6) in the direction of the height of the backrest (3). The configuration enables the position of the portion subjected to a load to be appropriately adjusted because the load receiving section (6) can be moved in the direction of the height of the backrest (3) by the rotation of the rotation body (12) around which the wire (11) is wound.

Description

Seat adjustment device and seat

The present invention relates to a seat adjustment device and a seat.

As a conventional seat mounted on a vehicle or the like, for example, Patent Document 1 discloses a seat provided with a seat back device in which a lumbar support plate for supporting the vicinity of a waist of a seated person is built. In the seat back device, the position of the lumbar support plate can be adjusted by driving the motor and operating the arm. *

Japanese Patent Laid-Open No. 5-207920

By the way, the seat back device described in Patent Document 1 as described above has a lumbar support plate having a configuration different from the above for further improvement, for example, ensuring an optimal seating posture with a simpler configuration. It has been desired to change the position of the load receiving part such as.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a seat adjusting device and a seat that can appropriately change the position of a portion that receives a load.

In order to achieve the above object, a seat adjusting apparatus according to the present invention includes a wire connected to a load receiving portion provided in a backrest portion of a seat, and the load receiving portion that is wound around the wire and rotates. And a rotating body that relatively moves along the height direction of the backrest portion.

In the seat adjustment device, one end of the wire is connected to one end portion in the height direction of the load receiving portion, and the other end is connected to the other end portion in the height direction of the load receiving portion. It extends along the height direction, and with rotation of the rotating body, one side in the height direction is pulled and the other side is loosened with respect to the rotating body.

Further, in the seat adjusting device, the rotating body is provided to be rotatable about a rotation axis along a direction intersecting the height direction as a rotation center and not to be relatively movable with respect to the frame of the backrest portion. can do.

In the seat adjustment device, the rotating body has a winding portion around which the wire is wound, and the winding portion winds the wire from one side in the height direction with the rotation, It can be sent out to the other side.

Moreover, in the said sheet | seat adjustment apparatus, the said winding part shall be comprised including the penetration hole which penetrates the said rotary body in the direction which cross | intersects the rotating shaft line of the said rotary body, and the said wire is penetrated. it can.

Further, the seat adjusting device includes a pair of fulcrum members that fold and support the wire on one end side and the other end side in the height direction of the load receiving portion, and the rotating body has the height. It can be located between the pair of fulcrum members with respect to the direction.

In the seat adjustment device, the load receiving portion includes a fulcrum member that supports the wire by folding back the wire on one end side or the other end side in the height direction, and the rotating body includes the load receiving portion. The wire may be folded back and supported on the other end side or the other end side in the height direction.

Further, the seat adjusting device may include a guide portion that guides the movement of the load receiving portion along the height direction.

Further, in the seat adjusting device, the load receiving portion may include a lumbar support portion capable of supporting a waist of a seated person seated on the seat.

In order to achieve the above object, a seat according to the present invention includes a seating portion on which a seated person can sit, a backrest portion standing on the seating portion, and a load receiving portion provided in the backrest portion. A seat adjusting device comprising: a wire to be connected; and a rotating body that is wound around the wire and relatively moves the load receiving portion along the height direction of the backrest portion with rotation.

The seat adjusting device and the seat according to the present invention can move the load receiving portion along the height direction of the backrest portion by rotating the rotating body around which the wire is wound. There is an effect that the position can be appropriately changed.

FIG. 1 is a perspective view illustrating a schematic configuration of a seat according to the first embodiment. FIG. 2 is a schematic cross-sectional view along the depth direction of the sheet according to the first embodiment. FIG. 3 is a schematic perspective view illustrating a schematic configuration of the vertical adjustment mechanism according to the first embodiment. FIG. 4 is a schematic cross-sectional view along the depth direction of the vertical adjustment mechanism according to the first embodiment. FIG. 5 is a partial perspective view of the rotating shaft according to the first embodiment. FIG. 6 is a schematic perspective view illustrating a schematic configuration of the vertical adjustment mechanism according to the second embodiment. FIG. 7 is a schematic cross-sectional view along the depth direction of the vertical adjustment mechanism according to the second embodiment.

Hereinafter, embodiments of a seat adjusting device and a seat according to the present invention will be described in detail based on the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

[Embodiment 1]
FIG. 1 is a perspective view illustrating a schematic configuration of a seat according to the first embodiment, FIG. 2 is a schematic cross-sectional view along the depth direction of the seat according to the first embodiment, and FIG. 4 is a schematic perspective view showing a schematic configuration of the adjustment mechanism, FIG. 4 is a schematic sectional view along the depth direction of the vertical adjustment mechanism according to the first embodiment, and FIG. 5 is a part of the rotating shaft according to the first embodiment. It is a perspective view.

The seat 1 of the present embodiment shown in FIG. 1 is mounted on various vehicles, for example, for seating an occupant or the like. The seat 1 includes a seat cushion 2 as a seating portion on which a seated person can sit, a seat back 3 standing on the seat cushion 2 as a backrest portion of the seated person, and a head receiving portion that receives the head of the seated person. As a headrest 4 and a vertical adjustment mechanism 5 as a seat adjustment device.

In the following description, unless otherwise specified, the seat 1 is seated on the seat 1 in the depth direction, the direction intersecting the seat surface, that is, the seat height direction of the seated person sitting on the seat cushion 2 (substantially vertical). Direction) is called the height direction, and the left-right direction toward the seat back 3 is called the width direction. The depth direction, the height direction, and the width direction intersect each other, and are substantially orthogonal here.

As shown in FIGS. 1 and 2, the seat back 3 is provided at the rear end in the depth direction of the seat cushion 2, and supports a load on the upper body by a seated person sitting on the seat cushion 2 leaning on the seat back 3. . The headrest 4 is provided above the seat back 3 in the height direction. The seat back 3 is provided with a contour mat 6 as a load receiving portion that receives a seat back load.

The contour mat 6 is provided inside a back frame 7 as a frame provided inside the seat back 3. The back frame 7 constitutes a skeleton part of the seat back 3, and here, a plurality of members are combined to form a substantially U-shape with the lower side in the height direction opened as a whole. The contour mat 6 is provided and supported inside the substantially U-shape of the back frame 7.

For example, as shown in FIG. 3, the contour mat 6 includes a plurality of seatback springs 8, a substantially square-shaped frame 9, and the like, and forms a planar elastic support member as a whole. The contour mat 6 has, for example, a seatback spring 8 that is a plurality of linear (including curved and refracted linear) elastic members with respect to the elastic frame 9 along the width direction. It is being handed over. Thereby, the contour mat 6 can elastically receive the backrest load of the seated person on the surface and support it. The contour mat 6 is elastically supported by a suspension spring (not shown) or the like with respect to the back frame 7, for example.

Here, the contour mat 6 is configured to include a lumbar support portion 10 as illustrated in FIGS. The lumbar support portion 10 is a portion capable of supporting the vicinity of the waist of the seated person seated on the seat 1 in the contour mat 6. The lumbar support part 10 here is a part protruding toward the front side in the depth direction in the contour mat 6. In other words, the lumbar support portion 10 is formed by the contour mat 6 projecting in the shape of a dogleg toward the seat cushion 2 side. In this case, the lumbar support portion 10 can reduce the weight of the contour mat 6 as compared with a case where the lumbar support portion 10 is configured using a so-called lumbar support plate.

Note that the lumbar support portion 10 is not limited to the above configuration, and may be configured, for example, by changing the rigidity distribution of the contour mat 6. In this case, in the lumbar support portion 10, for example, the rigidity of the seat back spring 8 in a portion corresponding to the vicinity of the waist is set to be relatively high, and the rigidity of the seat back spring 8 in other portions such as the shoulder is relatively low. Configured by being set. Moreover, the lumbar support part 10 may be comprised using the said lumbar support plate.

By the way, the sheet | seat 1 of this embodiment changes the position of the contour mat 6 appropriately, when the vertical adjustment mechanism 5 moves the contour mat 6 relatively in the height direction using the wire 11 and the rotating shaft 12. FIG. To be able to. As shown in FIG. 1, the vertical adjustment mechanism 5 is basically provided inside the seat back 3 together with the contour mat 6. The vertical adjustment mechanism 5 moves the contour mat 6 up or down along the height direction and adjusts the position of the contour mat 6 in the height direction. Furthermore, the vertical adjustment mechanism 5 adjusts the position of the lumbar support part 10 to an appropriate position according to the position of the waist of the seated person by moving the contour mat 6 along the height direction. .

Specifically, as shown in FIGS. 3 and 4, the vertical adjustment mechanism 5 includes a wire 11, a rotary shaft 12 as a rotating body, an adjustment dial 13, and a pair of fulcrum shafts 14 as a pair of fulcrum members. 15 and a guide rail 16 as a guide portion.

The wire 11 is, for example, a linear member that can be bent softly and is connected to a contour mat 6 provided in the seat back 3. One end of the wire 11 is connected to the upper end 6 a of the contour mat 6, and the other end is connected to the lower end 6 b of the contour mat 6. Here, the upper end portion 6 a is one end portion on the upper side in the height direction of the contour mat 6, and the lower end portion 6 b is the other end portion on the lower side in the height direction of the contour mat 6. Therefore, this wire 11 extends along the height direction.

Rotating shaft 12 is used to relatively move contour mat 6 along the height direction of seat back 3 as wire 11 is wound. The rotating shaft 12 is formed in a substantially cylindrical shape. The rotary shaft 12 is arranged so that the central axis is along the width direction that intersects the height direction, that is, parallel to the width direction. The rotation shaft 12 can rotate as a rotation axis X along the width direction intersecting the height direction with the central axis. The rotation shaft 12 is provided so as to be rotatable about the rotation axis X and to be unable to move relative to the back frame 7 of the seat back 3. The rotating shaft 12 is supported by the back frame 7 via a bracket (not shown), for example.

The rotary shaft 12 has a winding part 17 around which the wire 11 is wound. Here, the rotating shaft 12 has two winding portions 17, and two wires 11 are wound around correspondingly. The rotary shaft 12 moves (relatively displaces) the wire 11 along the height direction by winding the wire 11 from one side in the height direction and feeding it to the other side as the winding portion 17 rotates. . The winding part 17 here is comprised including the insertion hole 18, as shown in FIG. The insertion hole 18 passes through the rotation shaft 12 in a direction intersecting with the rotation axis X of the rotation shaft 12, here, in a substantially orthogonal direction. The rotating shaft 12 has the wire 11 inserted through the insertion hole 18 at the winding portion 17 and the wire 11 is wound around the outer peripheral surface by several turns. Thereby, when the rotating shaft 12 rotates, the vertical adjustment mechanism 5 can be configured such that one side in the height direction of the wire 11 is pulled and the other side is loosened with respect to the rotating shaft 12.

Here, the rotational power for rotating the rotary shaft 12 may be by human power or by a power source such as a motor. Here, the rotating shaft 12 is rotated by rotational power input from a seated person or the like via the adjustment dial 13.

The adjustment dial 13 is provided integrally with the rotary shaft 12 at one end of the rotary shaft 12 and is disposed so as to be exposed to the outside of the seat back 3 (see FIG. 1). For example, when the seated person rotates the adjustment dial 13 around the rotation axis X, the rotary shaft 12 rotates integrally with the adjustment dial 13 in the same direction.

The pair of

fulcrum shafts

14 and 15 are both winding fulcrums of the wire 11. The pair of

fulcrum shafts

14 and 15 folds and supports the wire 11 at one end side and the other end side in the height direction of the contour mat 6. Here, the fulcrum shaft 14 is provided on one end portion on the upper side in the height direction of the contour mat 6, and the fulcrum shaft 15 is provided on the other end portion on the lower side in the height direction of the contour mat 6. Both

fulcrum shafts

14 and 15 are formed in a substantially cylindrical shape. The

fulcrum shafts

14 and 15 are both arranged so that the central axis is along the width direction that intersects the height direction, that is, parallel to the width direction. Both

fulcrum shafts

14 and 15 are provided so as not to move relative to the back frame 7 of the seat back 3.

The rotary shaft 12 described above is located between the pair of

fulcrum shafts

14 and 15 with respect to the height direction. In other words, one end of the wire 11 is connected to the upper end portion 6 a of the contour mat 6, supported by being folded back by the fulcrum shaft 14 toward the lower side in the height direction, and further supported by the fulcrum shaft 15. The other end is connected to the lower end 6 b of the contour mat 6. And the wire 11 is wound around the winding part 17 of the rotating shaft 12 between the fulcrum shaft 14 and the fulcrum shaft 15 with respect to the height direction.

The guide rail 16 guides the movement of the contour mat 6 along the height direction, and is a rail member extending along the height direction. A pair of guide rails 16 are provided on both sides of the contour mat 6 in the width direction and are fixed to the back frame 7. The guide rail 16 may be used as a part of the back frame 7.

In the vertical adjustment mechanism 5 configured as described above, for example, when the seated person rotates the adjustment dial 13 around the rotation axis X, the rotation shaft 12 rotates integrally with the adjustment dial 13 in the same direction. When the rotary shaft 12 rotates, the vertical adjustment mechanism 5 takes the wire 11 from one side in the height direction and feeds the wire 11 to the other side along with this rotation. The wire 11 on one side in the direction is pulled and the wire 11 on the other side is loosened. As a result, the vertical adjustment mechanism 5 can move the wire 11 along the height direction as the rotary shaft 12 rotates, and adjusts the vertical wire length in the height direction to move the contour mat 6 in the height direction. Can be moved up and down. During this time, the vertical adjustment mechanism 5 is guided by the guide rails 16 along the height direction of the contour mat 6.

For example, as shown by solid line arrows in FIGS. 4 and 5, the vertical adjustment mechanism 5 rotates the rotating shaft 12 counterclockwise when the seated person rotates the adjustment dial 13 counterclockwise. When the rotary shaft 12 rotates counterclockwise, the vertical adjustment mechanism 5 causes the winding portion 17 to feed the wire 11 from the lower side in the height direction to the upper side with this rotation, so that the rotary shaft 12 is used as a reference. The lower wire 11 in the height direction is pulled and the upper wire 11 is loosened. As a result, the vertical adjustment mechanism 5 can move the contour mat 6 downward along the height direction.

On the other hand, in the vertical adjustment mechanism 5, for example, as shown by a one-dot chain arrow in FIGS. 4 and 5, when the seat occupant rotates the adjustment dial 13 clockwise, the rotary shaft 12 also rotates clockwise. When the rotary shaft 12 rotates in the clockwise direction, the vertical adjustment mechanism 5 causes the winding portion 17 to send the wire 11 from the upper side in the height direction to the lower side of the winding, thereby rotating the rotary shaft 12 with the rotary shaft 12 as a reference. The upper wire 11 is pulled and the lower wire 11 is loosened. As a result, the vertical adjustment mechanism 5 can move the contour mat 6 upward along the height direction.

Therefore, the vertical adjustment mechanism 5 can relatively move the contour mat 6 along the height direction of the seat back 3 by the rotation of the rotating shaft 12 around which the wire 11 is wound. By adjusting the position in the vertical direction, for example, the position of the lumbar support part 10 can be adjusted to an appropriate position in accordance with the seated person's physique, waist position, sitting comfort preference, and the like. At this time, since the wire 11 does not have extra play in the seat back 3, the vertical adjustment mechanism 5 can prevent the wire 11 from being entangled in the seat back 3, for example.

Further, the vertical adjustment mechanism 5 can relatively move the contour mat 6 along the height direction of the seat back 3 by rotating the rotating shaft 12 around which the wire 11 is wound as described above. The position of the contour mat 6 can be adjusted with a relatively simple configuration without providing an arm member or a link mechanism.

The seat 1 according to the embodiment described above includes the seat cushion 2 on which a seated person can sit, the seat back 3 erected with respect to the seat cushion 2, and the vertical adjustment mechanism 5. And according to the up-and-down adjustment mechanism 5 which concerns on embodiment described above, the wire 11 connected to the contour mat 6 provided in the seat back 3 of the sheet | seat 1, and the wire 11 are wound and accompanying rotation. And a rotating shaft 12 that relatively moves the contour mat 6 along the height direction of the seat back 3. Therefore, the seat 1 and the vertical adjustment mechanism 5 can relatively move the contour mat 6 along the height direction of the seat back 3 by rotating the rotating shaft 12 around which the wire 11 is wound. The position of the receiving part can be changed appropriately.

[Embodiment 2]
FIG. 6 is a schematic perspective view illustrating a schematic configuration of the vertical adjustment mechanism according to the second embodiment, and FIG. 7 is a schematic cross-sectional view along the depth direction of the vertical adjustment mechanism according to the second embodiment. The seat adjusting device and the seat according to the second embodiment are different from the seat adjusting device and the seat according to the first embodiment in that the rotating body is also used as a fulcrum member. In addition, about the structure, effect | action, and effect which are common in embodiment mentioned above, while overlapping description is abbreviate | omitted as much as possible, the same code | symbol is attached | subjected.

6 and 7 includes a vertical adjustment mechanism 205 serving as a sheet adjustment device. The vertical adjustment mechanism 205 is different from the vertical adjustment mechanism 5 in that one of the pair of

fulcrum shafts

14 and 15 described in the above-described vertical adjustment mechanism 5 is not provided with the fulcrum shaft 15 here.

That is, the vertical adjustment mechanism 205 includes a fulcrum shaft 14 as a fulcrum member that folds and supports the wire 11 on one end side or the other end side in the height direction of the contour mat 6, here on the upper end 6 a side. . A rotating shaft 212 as a rotating body provided in the vertical adjustment mechanism 205 is replaced with the fulcrum shaft 15 on the one end side or the other end side in the height direction of the contour mat 6, here the lower end portion 6 b side. The wire 11 is folded back and supported. Here, the rotating shaft 212 is a rotating body and also functions as a winding fulcrum of the wire 11. That is, the vertical adjustment mechanism 205 is also used with the rotating shaft 212 as a fulcrum member.

Therefore, the seat 201 and the vertical adjustment mechanism 205 can suppress the number of parts constituting the vertical adjustment mechanism 205, and can appropriately change the position of the portion that receives the load with a simpler configuration. As a result, the sheet 201 and the vertical adjustment mechanism 205 can reduce the manufacturing cost, for example.

The seat adjusting device and the seat according to the above-described embodiment of the present invention are not limited to the above-described embodiment, and various modifications can be made within the scope described in the claims.

As described above, the seat adjustment device and the seat according to the present invention are suitable for application to various seat adjustment devices and seats used in vehicles and the like.

1,201 Seat 2 Seat cushion (sitting part)
3 Seat back (backrest)
5, 205 Vertical adjustment mechanism (sheet adjustment device)
6 Contour mat (load receiving part)
7 Back frame
10 Lumber support part 11

Wire

12, 212 Rotating shaft (Rotating body)
13

Adjustment dial

14, 15 Support shaft (support member)
16 Guide rail (guide section)
17 Winding part 18 Insertion hole X Rotation axis

Claims

A wire connected to a load receiving portion provided in the back portion of the seat;
A rotating body that winds the wire and relatively moves the load receiving portion along the height direction of the backrest portion as the wire is rotated.
Seat adjustment device.
One end of the wire is connected to one end of the load receiving portion in the height direction, and the other end is connected to the other end of the load receiving portion in the height direction so as to extend along the height direction. Present, with the rotation of the rotating body, one side of the height direction is pulled and the other side is loosened with respect to the rotating body,
The seat adjustment device according to claim 1.
The rotating body is provided so as to be rotatable around a rotation axis along a direction intersecting the height direction as a rotation center and immovable relative to the frame of the backrest portion.
The seat adjustment device according to claim 1.
The rotating body has a winding portion around which the wire is wound, and the winding portion winds the wire from one side in the height direction along with the rotation, and sends the wire to the other side.
The seat adjustment device according to claim 1.
The winding portion includes an insertion hole that penetrates the rotating body in a direction intersecting the rotation axis of the rotating body and through which the wire is inserted.
The seat adjustment device according to claim 4.
A pair of fulcrum members that fold and support the wire on one end side and the other end side in the height direction of the load receiving portion;
The rotating body is located between the pair of fulcrum members with respect to the height direction.
The seat adjustment device according to claim 1.
A fulcrum member that supports the wire by folding it back to one end or the other end in the height direction of the load receiver;
The rotating body supports the wire by folding back the wire at the other end on the one end side or the other end side in the height direction of the load receiving portion.
The seat adjustment device according to claim 1.
A guide portion for guiding movement of the load receiving portion along the height direction;
The seat adjustment device according to claim 1.
The load receiving portion includes a lumbar support portion capable of supporting a waist of a seated person seated on the seat,
The seat adjustment device according to claim 1.
A seating section on which a seated person can sit;
A backrest portion erected with respect to the seating portion;
A wire connected to a load receiving portion provided in the backrest portion; and a rotating body that is wound around the wire and relatively moves the load receiving portion along the height direction of the backrest portion as the wire rotates. A seat adjusting device;
Sheet.