JP2022058118A - Vehicle seat - Google Patents

Abstract

To provide a vehicle seat capable of appropriately operating a movable body (second movable body) attached to a seat body.SOLUTION: A vehicle seat S comprises: a seat back 2; a movable body 30 that is attached to an inside of the seat back 2 and that can move so as to protrude a central portion of the seat back 2 toward a seated person side (front side of the seat); a drive device 40 that is attached to the inside of the seat back 2 and drives the movable body 30; and second movable bodies 50 that are attached to positions different from positions of the movable portion 30 and the drive device 40 inside the seat back 2, and can move so as to protrude side portions of the seat back 2 toward the seated person side. The second movable bodies 50 are arranged on the side closer to the seated person than the drive device 40 in a movable direction (seat front-rear direction) of the second movable body 50.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vehicle seat and relates to a vehicle seat provided with a movable body that is movable so as to project a part of the seat body toward the seated person from a normal position.

Conventionally, a movable body (for example, a side support member) that is attached to the inside of the seat body in which the seated person is seated and is movable to project a part of the seat body (for example, a side portion) from the normal position toward the seated person is provided. A vehicle seat provided is known (see, for example, Patent Document 1).
By providing the movable body, it is possible to improve the holdability of the vehicle seat according to the physique and preference of the seated person.

Japanese Unexamined Patent Publication No. 2014-148235

By the way, in a vehicle seat as in Patent Document 1, a movable body (lamba support member) for projecting the central portion of the seat body toward the seater and a side portion of the seat body projecting toward the seater. A second movable body (side support member) for causing the movable body and a driving device for driving the movable body and the second movable body are known. Under such circumstances, it has been required to suitably operate the movable body (second movable body). Further, it has been required to arrange each component as compactly as possible in the vehicle seat.

In addition, when the movable body or the second movable body projects a part of the seat body toward the seated person, wrinkles or dubs are unintentionally formed on the surface of the seat body (specifically, on the skin material). It may occur, which may spoil the appearance of the vehicle seat.
For example, when the movable body and the second movable body are arranged side by side in the seat width direction, a force is applied to the surface of the seat body from a plurality of directions due to the movement of these movable bodies, resulting in wrinkles or dubs. There was a risk that sticking would occur easily.
Further, for example, when the second movable body projects the side portion of the seat body toward the seated person, the boundary portion between the central portion and the side portion of the seat body (specifically, the portion corresponding to the skin suspension groove). There was a risk that wrinkles and dubs of the skin material would be noticeable.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle seat capable of suitably operating a movable body (second movable body) attached to a seat body. To do.
Another object of the present invention is to provide a vehicle seat capable of compactly arranging each component (movable body and second movable body) of the vehicle seat.
Another object of the present invention is for a vehicle capable of suppressing wrinkles and dubs on the surface of the seat body even when a part of the seat body is projected toward the seated person. To provide a seat.
Another object of the present invention is a vehicle capable of suppressing wrinkles and dubs of the skin material at the boundary portion between the central portion and the side portion of the seat body (the portion corresponding to the skin suspension groove). To provide a sheet for you.

According to the vehicle seat of the present invention, the subject is a seat body on which a seated person is seated, a seat body attached to the seat body, and a moving position in which a part of the seat body is moved from the normal position and the normal position. A movable body that is movable to switch between, a drive device that is attached to the seat body and drives the movable body, and a drive device that is attached to the seat body at a position different from that of the movable body and the drive device. A second movable body that is movable to project a part of the seat body toward the seated person is provided, and the second movable body is the seated person rather than the driving device in the movable direction of the second movable body. It is solved by being placed on the side.
With the above configuration, it is possible to realize a vehicle seat capable of suitably operating a movable body (second movable body) attached to the seat body.
Specifically, since the movable body, the second movable body, and the driving device are attached to different positions on the seat body, the movable body (second movable body) can be suitably operated. Become.
In particular, since the second movable body is arranged closer to the seated person than the drive device in the movable direction of the second movable body, the second movable body preferably causes a part of the seat body to project toward the seated person. It becomes possible to move to.
Further, with the above configuration, it is possible to arrange each component (movable body and the second movable body) of the vehicle seat as compactly as possible.

At this time, the seat body is configured by covering the cushion material with the skin material, and the movable body is provided on the back surface of the cushion material at the central portion in the seat width direction of the seat back, and the central portion of the seat back. The second movable body is provided on the back surface of the cushion material at the side portion of the seat back, and is movable to project the side portion of the seat back. It is preferable that the seat is arranged on the front side of the seat with respect to the drive device.
With the above configuration, each component can be arranged as compactly as possible inside the seat body.

At this time, it is preferable that the second movable body is arranged at a position above the drive main body portion of the drive device. The vehicle seat according to claim 2.
With the above configuration, the second movable body is arranged at a position (separate position) different from that of the drive device (drive main body) in the front-rear direction and the vertical direction of the seat. Therefore, the second movable body is less likely to be affected by vibration or the like generated by the operation of the drive device.

At this time, the seat back includes a back frame that serves as a skeleton, and the back frame has a back side frame that is arranged on the left and right sides in the seat width direction and extends in the vertical direction, and the second movable body. Is attached to the front surface of the backside frame and is attached to the inner portion of the backside frame in the seat width direction, and the drive device is arranged in the backside frame at a position different from that of the second movable body. It is preferable that the backside frame is attached to the inner side surface in the seat width direction.
With the above configuration, it is possible to suppress an increase in the size of the seat back in the seat width direction.
Further, with the above configuration, it is less likely to be affected by the outside from the outside in the seat width direction of the seat back. Therefore, the second movable body and the driving device can be suitably operated.

At this time, the drive device has a drive main body, a cable that connects the drive main body and the movable body, and acts to move the movable body in accordance with the operation of the drive main body. It is preferable that the cable extends in the vertical direction from the drive main body portion, and a portion of the second movable body attached to the backside frame extends along the vertical direction of the backside frame.
With the above configuration, it is possible to prevent the second movable body and the drive device (drive main body and cable) from interfering with each other while being compactly arranged.

At this time, it is preferable that the second movable body is arranged on the seater side of the seating surface at the center of the seat back.
With the above configuration, it is possible to realize a vehicle seat capable of suppressing wrinkles and dubs from occurring on the surface of the seat body.
Specifically, the movable body and the second movable body are arranged at different positions in the seat width direction and at different positions in the protruding direction. As a result, even when these movable bodies move at the same time, the direction and position of the forces applied to the surface of the seat body can be different. Therefore, it is possible to suppress the occurrence of wrinkles and dubs on the surface of the sheet body.

At this time, a skin suspension groove for suspending the end of the skin material is formed on the surface of the cushion material, and the skin suspension groove separates the central portion and the side portion in the seat back. It is provided at a position and extends in the vertical direction, and the portion corresponding to the skin suspension groove on the back surface of the cushion material is a cushion deformation for suppressing the deformation of the cushion material around the skin suspension groove. It is preferable that the restraining portion is formed.
With the above configuration, it is possible to suppress deformation of the cushion material at a predetermined portion of the seat back and prevent wrinkles and dubs from occurring on the skin material of the seat back.
In particular, when the second movable body projects the side portion of the seat body toward the seated person, the skin material has wrinkles or dubs at the boundary portion between the center portion and the side portion of the seat body (the portion corresponding to the skin suspension groove). Is known to occur prominently. Therefore, it is possible to take measures to prevent wrinkles and dubs from occurring in the skin material at the boundary portion.

At this time, the movable body is a lumbar support member attached to the lower portion of the seat back to support the waist of the seated person, and the second movable body is lateral to the left and right sides of the lumbar support member. It is preferable that the side support member is attached to the seat and supports the seated person from the side.
With the above configuration, the second movable body can move while following the moving motion of the lumbar support member in the front-rear direction of the seat. Therefore, the holdability of the vehicle seat can be further improved according to the physique and preference of the seated person.

At this time, the seat back includes a back frame serving as a skeleton, the back frame is arranged on the left and right sides in the seat width direction, and has a back side frame extending in the vertical direction, and the vehicle seat is The second movable body is attached to the outer surface of the backside frame in the seat width direction and is provided with a side airbag device for cushioning an impact applied from the side of the vehicle, and the second movable body is the side of the backside frame. It is preferable that the airbag device is mounted at a position different from the mounted portion and is arranged on the front side of the seat with respect to the side airbag device.
With the above configuration, it is possible to suppress the interference between the second movable body and the side airbag device and to operate the second movable body more preferably.

At this time, the seat back includes a back frame serving as a skeleton, and the back frame is arranged on the left and right sides in the seat width direction, and extends vertically on the back side frame and the front surface of the back side frame. It is preferable that the second movable body is arranged inside the linear member in the seat width direction, and has a linear member that is attached and projects toward the front side of the seat from the backside frame. ..
With the above configuration, the second movable body is protected from the outside by the linear member. Therefore, the second movable body can be operated more preferably.

At this time, the second movable body has a plurality of bags that swell when the fluid is sealed, and the plurality of bags are arranged at different positions in the front-rear direction of the seat, and each has a different size. It should be configured.
Further, it is preferable that the first bag body located on the front side of the seat among the plurality of bag bodies has the smallest capacity as that of the other bag bodies.
With the above configuration, by inflating a plurality of bag bodies having different positions and sizes, it is possible to adjust the protruding direction and the amount of protrusion of the seat back by the second movable body.
Further, according to the above configuration, by adjusting the protruding direction and the protruding amount of the side portion of the seat back, it is possible to suppress the occurrence of wrinkles and dubs on the skin material of the seat back.

At this time, the seat back includes a back frame that serves as a skeleton, and the back frame has a back side frame that is arranged on the left and right sides in the seat width direction and extends in the vertical direction, and the second movable body. Has a base member supported by the backside frame and a plurality of bags arranged at a position in front of the seat and supported by the base member, and the plurality of bags swell. It is preferable to project the side portion toward the front side of the seat by pulling it out.
With the above configuration, the second movable body is suitably supported by the backside frame. As a result, the movable operation of the second movable body (expansion and deployment of a plurality of bag bodies) can be stabilized. Further, by stabilizing the movable operation of the second movable body, it is possible to make adjustments so as to suppress the occurrence of wrinkles and dubs on the skin material of the seat back.

At this time, the second movable body has a rotating member that is arranged at a position in front of the seat with respect to the base member and is attached to the base member so as to be rotatable via a rotating shaft. The plurality of bag bodies are arranged between the base member and the rotating member, and the rotating member causes the side portions to protrude toward the front side of the seat by bulging the plurality of bag bodies. It is good to rotate to.
By providing the rotating member as described above, the movable operation of the second movable body can be further stabilized.

According to the present invention, it is possible to realize a vehicle seat capable of suitably operating a movable body (second movable body) attached to the seat body.
In particular, the second movable body is preferably movable in order to project a part of the seat body toward the seated person.
Further, according to the present invention, it is possible to arrange each component (movable body and the second movable body) of the vehicle seat as compactly as possible.
Further, according to the present invention, the second movable body is less likely to be affected by vibration or the like generated by the operation of the driving device.
Further, according to the present invention, it is possible to suppress an increase in the size of the seat back in the seat width direction.
Further, according to the present invention, the second movable body and the driving device can be suitably operated.
Further, according to the present invention, it is possible to prevent the second movable body and the drive device (drive main body and cable) from interfering with each other while being compactly arranged.
Further, according to the present invention, it is possible to realize a vehicle seat capable of suppressing wrinkles and dubs from occurring on the surface of the seat body.
Specifically, even when a plurality of movable bodies are movable at the same time, the direction and position of the force applied to the surface of the seat body can be different. Therefore, it is possible to suppress the occurrence of wrinkles and dubs on the surface of the sheet body.
Further, according to the present invention, it is possible to suppress the occurrence of wrinkles and dubs on the skin material of the seat back. In particular, it is possible to suppress the occurrence of wrinkles and dubs of the skin material at the boundary portion between the central portion and the side portion of the seat body (the portion corresponding to the skin suspension groove).
Further, according to the present invention, the holdability of the vehicle seat can be further enhanced according to the physique and preference of the seated person.
Further, according to the present invention, it is possible to suppress the interference between the second movable body and the side airbag device and to operate the second movable body more preferably.
Further, according to the present invention, by inflating a plurality of bag bodies having different positions and sizes, it is possible to adjust the protruding direction and the protruding amount of the seat back by the second movable body. As a result, it is possible to suppress the occurrence of wrinkles and dubs on the skin material of the seat back.
Further, according to the present invention, it is possible to stabilize the movable operation of the second movable body (expansion and deployment of a plurality of bag bodies). As a result, it can be adjusted so as to suppress the occurrence of wrinkles and dubs on the skin material of the seat back.
Further, according to the present invention, the movable operation of the second movable body can be further stabilized.

It is external perspective view of the vehicle seat of this embodiment. It is a perspective view which shows the seat frame which becomes a skeleton. It is a side view when the back side frame is seen from the inside in the seat width direction, and is the figure which shows the 2nd movable body and the drive device. This is a modified example of the mounting position of the second movable body. FIG. 1 is a sectional view taken along line IV-IV of FIG. 1 for explaining a state in which the second movable body is not movable and the side portion of the seat back is in the “normal position”. It is a figure explaining the state which the 2nd movable body is movable, and the side part of a seat back is in a "protruding position". It is a schematic diagram which shows the 2nd movable body, the air control unit and the air pump. It is a figure which shows the modification 1 of the 2nd movable body, and is the sectional view of the seat back. It is a figure which shows the modification 2 of the 2nd movable body, and is the sectional view of the seat back. It is a front view which shows the seat frame of the vehicle seat of 2nd Embodiment. FIG. 8 is a cross-sectional view taken along the line IX-IX of FIG. 8 for explaining a state in which the second movable body is not movable and the side portion of the seat back is in the “normal position”. It is a figure explaining the state which the 2nd movable body is movable, and the side part of a seat back is in a "protruding position".

Hereinafter, embodiments according to the present invention will be described with reference to FIGS. 1-FIG. 9A and 9B.
In this embodiment, the seat body, a movable body attached to the inside of the seat body and movable to project the central portion of the seat body in the seat width direction toward the seater side (front side of the seat), and the inside of the seat body. A second movable device that is attached to the seat body and is mounted at a position different from that of the movable body and the drive device inside the seat body and is movable to project the side portion of the seat body toward the seated person. The present invention relates to a vehicle seat comprising a body, wherein the second movable body is arranged on the seated side of the drive device in the movable direction of the second movable body.
The side on which the seated person sits with respect to the seat back of the vehicle seat is the front side of the seat.

As shown in FIG. 1, the vehicle seat S of the present embodiment is a vehicle seat, and is attached to the inside of a seat body including a seat cushion 1, a seat back 2, a headrest 3, and a seat back 2. A movable body 30 (lumbar support member) that is movable to project the lower portion of the seat back 2 toward the seater side from the normal position, a drive device 40 (actuator) that drives the movable body 30, and the seat back 2 A second movable body 50 (side support member) that is attached to the inside of the seat back 2 and is movable to project the side portion 2B of the seat back 2 toward the seated person side from the normal position, and is operated to move the second movable body 50. The actuating device 60 (fluid supply device) is provided.

As shown in FIG. 1, the seat cushion 1 is a seating portion that supports the seated person from below, and the cushion material 1a is placed on the cushion frame 10 shown in FIG. 2 as a skeleton and covered with the skin material 1b. It is composed of.
The seat cushion 1 is composed of a central portion 1A in the central portion in the seat width direction and left and right side portions 1B (side bolster portions) outside the central portion 1A in the seat width direction.
The cushion material 1a is a pad member made of urethane foam or the like.
On the surface of the cushion material 1a, left and right skin suspension grooves 1aa extending in the front-rear direction of the seat are formed so as to separate the central portion 1A and the left and right side portions 1B.

As shown in FIG. 1, the seat back 2 is a backrest portion that supports the back of the seated person from behind, and the cushion material 2a is placed on the back frame 20 shown in FIG. 2 which is a skeleton, and the skin material 2b is used. It is covered and configured.
The seat back 2 is composed of a central portion 2A in the central portion in the seat width direction and left and right side portions 2B (side bolster portions) outside the central portion 2A in the seat width direction.
On the surface of the cushion material 2a, left and right skin suspension grooves 2aa extending in the vertical direction are formed so as to separate the central portion 2A and the left and right side portions 2B.

As shown in FIG. 1, the headrest 3 is a head that supports the occupant's head from behind, and is configured by placing a cushion material 3a on a pillar 3c as a core material and covering it with a skin material 3b. There is.

As shown in FIG. 2, the cushion frame 10 is composed of a substantially rectangular frame-shaped body, and has a cushion side frame 11 arranged on the left and right sides and a plate-shaped body erected on the front end portion of each cushion side frame 11. A plurality of pan frames 12 (erection frames), a rear connecting frame 13 that connects the rear portions of the cushion side frames 11, and a plurality of pieces that are hooked to the pan frame 12 and the rear connecting frame 13 and extend in a serpentine shape in the front-rear direction of the seat. It is mainly composed of the elastic spring 14 (elastic support member) of the above.

The cushion side frame 11 is a plate-shaped frame that is long in the front-rear direction of the seat.
A reclining device 4 is attached to the rear portion of the cushion side frame 11, and a rail device 6 is attached to the lower portion thereof via the height link device 5.

As shown in FIG. 2, the back frame 20 has a substantially rectangular frame shape, and has an inverted U shape connecting the back side frames 21 arranged on the left and right sides and the upper end portions of the back side frames 21. 22 It is mainly composed of 24 (elastic wire) and a support plate 25 that is held by a plurality of wire members 24 and supports a seated person.
The back frame 20 is attached to the central portion of the upper frame 22 in the seat width direction, and further includes a pillar attaching member 26 for attaching the pillar 3c of the headrest 3.

The backside frame 21 is a sheet metal member extending in the vertical direction and having a substantially C-shaped cross section, and its lower end portion is connected to the rear end portion of the cushion side frame 11 via a reclining device 4.
In the above configuration, the back frame 20 can rotate relative to the cushion frame 10.

In the above configuration, as shown in FIG. 2, a movable body 30 is attached to the front surface of the support plate 25, and a drive device 40 for driving the movable body 30 is mounted on the inner surface of the backside frame 21 on the right side. It is attached.
Further, a second movable body 50 is attached to the front surface of the backside frame 21, and an actuating device 60 for moving the second movable body 50 is attached to the outer surface of the left backside frame 21. ing.

As shown in FIG. 2, the movable body 30 is a lumbar support member that is arranged in the lower portion of the seat back 2 and supports the waist portion of the seated person.
The movable body 30 is arranged between the cushion material 2a and the support plate 25, and is a member that is movable in order to project the central portion 2A (cushion material 2a) of the seat back 2 toward the seated person.
Specifically, the movable body 30 is a substantially rectangular movable plate that is supported by the front surface of the support plate 25 and can be curved so as to project toward the front side of the seat.
The movable body 30 has a flat plate shape and is attached to the front surface of the support plate 25. When the drive device 40 is driven, the movable body 30 is curved so as to bend in the vertical direction, and the central portion 2A of the seat back 2 can be projected toward the front side of the seat. ..

As shown in FIGS. 2 and 3A, the drive device 40 is an actuator fixed to the inner surface of the backside frame 21 and driving the movable body 30 to move in the front-rear direction and the up-down direction of the seat.
Specifically, the drive device 40 connects the drive main body 41, the drive main body 41, and the movable body 30, and a plurality of cables that act to move the movable body 30 with the operation of the drive main body 41. It has 42, 43, 44, and so on.

The first cable 42 extends upward from the upper end portion of the drive main body 41, bends so as to wrap around the back surface of the support plate 25, extends downward, and is connected to the back surface of the lower end portion of the movable body 30. ing.
By pulling the first cable 42 with the drive of the drive main body 41, the movable body 30 is curved so as to bend in the vertical direction and can move to the front side of the seat. Further, when the towing of the first cable 42 is released, the movable body 30 can return to the flat plate shape again.

The second cable 43 extends from the upper end of the drive main body 41 toward the rear of the seat, bends so as to wrap around the back surface of the support plate 25, extends inward in the width direction of the seat, and extends toward the inside of the seat width direction. It is connected to the back side of.
Further, the third cable 44 extends from the lower end of the drive main body 41 toward the rear of the seat, bends so as to wrap around the back surface of the support plate 25, and extends inward in the width direction of the seat of the movable body 30. It is connected to the back of the upper end.
The movable body 30 can be moved upward by pulling the second cable 43 and the third cable 44 as the drive main body 41 is driven. Further, the movable body 30 can move downward by releasing the towing of the second and third cables 43 and 44.

As shown in FIGS. 2, 4A and 4B, the second movable body 50 has a bag body (air cell) and bulges toward the seated person by being filled with compressed air (protrudes from the normal position to the protruding position). ), It contracts (returns to the normal position) when the enclosed compressed air is discharged.
Specifically, the second movable body 50 is a side support member that supports the seated person from the side, and is arranged between the cushion material 2a and the back side frame 21 in the side portion 2B of the lower portion of the seat back 2. ing. Then, it is a member that is movable in order to project the side portion 2B (cushion material 2a) toward the seated person.
The second movable body 50 is attached to the front surface of the backside frame 21 in a folded state.

The second movable body 50 has a substantially pentagonal shape that is long in the vertical direction, and is arranged at a position in front of the seat and the base member 51 supported by the backside frame 21 and the base member 51. A plurality of rotating members 53 mounted so as to be rotatable via a rotating shaft 52, and a plurality of members arranged between the base member 51 and the rotating member 53 and supported on the front surface of the base member 51. It is mainly composed of a bag body 54 and.

The base member 51 is attached to the front surface of the back side frame 21 and extends along the front surface of the back side frame 21 so as to project in the seat width direction.
The rotation shaft 52 is attached to the inner end portion in the seat width direction of the front surface of the base member 51.
The rotating member 53 is rotatably attached to the base member 51 in the front-rear direction of the seat, and by rotating toward the front of the seat, the side portion 2B of the seat back 2 is projected toward the front of the seat ( Can be extruded).
The rotating member 53 is a plate body having a curved shape slightly curved in front of the seat. Therefore, the contact area between the rotating member 53 and the cushion material 2a becomes somewhat smaller, and the pushing force of the rotating member 53 is efficiently transmitted to the cushion material 2a.
The rotating member 53 is arranged at a position closer to the base member 51 when the seat back 2 is in the normal position. It may be in a state of being urged to the base member 51 side by an urging spring (urging member) (not shown).

The plurality of bag bodies 54 are supported by the base member 51, and when compressed air is sealed, the bag body 54 swells toward the front side of the seat, and the rotating member 53 can be pushed out toward the front side of the seat. That is, the rotating member 53 can be rotated forward of the seat.

The plurality of bag bodies 54 are arranged at different positions in the front-rear direction of the seat and the width direction of the seat, and are configured to have different sizes.
More specifically, the plurality of bag bodies 54 are composed of three bag bodies, and among the plurality of bag bodies 54, the first bag body 54a located on the front side of the seat has the largest capacity than the other bag bodies. It is configured small. The capacity of the second bag body 54b is the largest, and the capacity of the third bag body 54c is medium.
With the above configuration, the protruding direction and the amount of protrusion of the seat back 2 (side portion 2B) can be adjusted by inflating a plurality of bag bodies 54 having different positions and sizes.
Further, by adjusting the protruding direction and the protruding amount of the side portion 2B of the seat back 2, it is possible to suppress the occurrence of wrinkles and dubs on the skin material 2b of the seat back 2.

As shown in FIGS. 2 and 5, the actuating device 60 is a fluid supply device attached to the inside of the seat body and for supplying compressed air to the second movable body 50 (bag body 54).
The actuating device 60 is attached to the back surface of the air control unit 61 attached to the outer surface of the backside frame 21 and the back surface of the cushion frame 10 (pan frame 12) to supply (supply) and discharge (exhaust) compressed air. It is mainly composed of an air pump 62 for the purpose and an air pipe 63 connecting the air pump 62 and the second movable body 50.

For example, the air control unit 61 receives a predetermined user operation selection by the seated person, receives a predetermined control signal, supplies compressed air to the bag body 54, and discharges compressed air from the bag body 54. Controls the air pump 62.
By doing so, the movable range of the second movable body 50 can be adjusted according to the physique of the seated person.

In the above configuration, as shown in FIG. 4B, when the movable body 30 causes the central portion 2A of the seat back 2 to protrude most toward the front side of the seat, the second movable body 50 seats the central portion 2A of the seat back 2. It is located on the front side of the seat from the surface.
Therefore, it is possible to prevent wrinkles and dubs from occurring on the skin material 2b of the seat back 2.
More specifically, the movable body 30 and the second movable body 50 are arranged at different positions in the seat width direction and at different positions in the seat front-rear direction. As a result, even when these movable bodies 30 and 50 are movable at the same time, the direction and position of the force applied to the skin material 2b of the seat back 2 can be different. Therefore, it is possible to suppress the occurrence of wrinkles and dubs on the skin material 2b of the seat back 2.

Further, in the above configuration, as shown in FIG. 3A, the second movable body 50 is arranged on the front side of the seat with respect to the driving device 40, and is arranged at a position where they overlap each other in the vertical direction.
By doing so, each component can be arranged as compactly as possible inside the seat back 2. Further, the second movable body 50 can be stably moved to the front side of the seat.
As shown in FIG. 3B, the mounting position of the second movable body 50 may be changed. For example, the second movable body 50 may be arranged on the front side of the seat with respect to the drive device 40 and may be arranged above the drive device 40.
By doing so, the second movable body 50 is arranged at a position (separate position) different from that of the drive device 40 in the front-rear direction and the vertical direction of the seat. As a result, the second movable body 50 is less likely to be affected by vibration or the like generated by the operation of the drive device 40.

Next, the operation of the second movable body 50 will be described in detail based on FIGS. 4A and 4B.
The second movable body 50 can move (bulge) to move the side portion 2B of the seat back 2 from the “normal position” shown in FIG. 4A to the “protruding position” shown in FIG. 4B.

FIG. 4A is a cross-sectional view of the seat back 2, showing a state in which the side portion 2B of the seat back 2 is in the “normal position”.
The second movable body 50 is arranged between the back frame 20 and the skin material 2b in the front-rear direction of the seat. Specifically, it is attached to the front surface of the back side frame 21 and is arranged on the back surface of the cushion material 2a.

FIG. 4B is a diagram showing a state in which the second movable body 50 (rotating member 53) protrudes forward of the seat and the side portion 2B of the seat back 2 moves from the “normal position” to the “protruding position”.
Specifically, by receiving the supply of compressed air from the operating device 60, the folded bag body 54 bulges and expands toward the front of the seat, and the rotating member 53 is pushed toward the front of the seat to push the side. Part 2B moves to the front of the seat. As a result, the side portion 2B moves to the "protruding position".
The compressed air inside the bag 54 is discharged by the actuating device 60, so that the inflated bag 54 contracts and the side portion 2B is lowered to the rear of the seat. As a result, the side portion of the seat back 2 returns from the "protruding position" to the "normal position".

<Modifications 1 and 2 of the second movable body>
Next, modifications 1 and 2 of the "second movable body" will be described with reference to FIGS. 6 and 7.
The description of the contents overlapping with the above-mentioned vehicle seat S will be omitted.

The second movable body 50 of the first modification is composed of a base member 51 supported by the backside frame 21 and a plurality of bag bodies 54 supported on the front surface of the base member 51.
The plurality of bag bodies 54 are supported by the base member 51, and can bulge toward the front side of the seat by enclosing compressed air from the folded state.
The plurality of bag bodies 54 are attached to the base member 51 by the attachment member 55 provided at the inner end portion in the seat width direction in the front surface of the base member 51.

FIG. 6 is a diagram showing a state in which the second movable body 50 (bag body 54) protrudes forward of the seat and the side portion 2B of the seat back 2 moves from the “normal position” to the “protruding position”.
Specifically, by receiving the supply of compressed air from the operating device 60, the folded bag body 54 bulges and expands to the front of the seat, and the side portion 2B is directly pushed to the front of the seat. As a result, the side portion 2B of the seat back 2 moves to the "protruding position".

In the above configuration, as shown in FIG. 6, in the portion corresponding to the skin suspension groove 2aa on the back surface of the cushion material 2a, the cushion deformation suppression for suppressing the deformation of the cushion material 2a around the skin suspension groove 2aa is suppressed. The portion 56 is attached.
Strictly speaking, the "periphery of the skin suspension groove 2aa" is a position outside the skin suspension groove 2aa in the seat width direction.
The cushion deformation suppressing portion 56 is a resin plate attached to the back surface of the cushion material 2a, is arranged at a position rearward of the seat from the rear end portion of the second movable body 50, and has a seat width of the second movable body 50. It is arranged inside the seat width direction from the inner end in the direction.
Therefore, it is possible to suppress the occurrence of wrinkles and dubs on the skin material 2b of the seat back 2. In particular, it is possible to suppress wrinkles and dubs of the skin material 2b at the boundary portion between the central portion 2A and the side portion 2B of the seat back 2 (the portion corresponding to the skin suspension groove 2aa).
The cushion deformation suppressing portion 56 may be a cloth-like member such as a non-woven fabric instead of the resin plate.

The second movable body 50 of the second modification is a base member 51, a rotating member 53 attached to the base member 51 so as to be rotatable via a rotating shaft 52, a base member 51, and rotation. It is composed of one bag body 54 arranged between the members 53 and supported on the front surface of the base member 51.
FIG. 7 is a diagram showing a state in which the second movable body 50 (bag body 54) protrudes forward of the seat and the side portion 2B of the seat back 2 moves from the “normal position” to the “protruding position”.

In the above configuration, as shown in FIG. 7, in the portion corresponding to the skin suspension groove 2aa on the back surface of the cushion material 2a, the cushion deformation suppression for suppressing the deformation of the cushion material 2a around the skin suspension groove 2aa is suppressed. The portion 56 is attached.
The cushion deformation suppressing portion 56 is a cushion wall thickness portion provided on the back surface of the cushion material 2a, is arranged at a position behind the seat of the second movable body 50, and is located in the seat width direction of the second movable body 50. It is located inside the.
Therefore, it is possible to prevent the skin material 2b from wrinkling or dubbing at the boundary portion between the central portion 2A and the side portion 2B of the seat back 2 (the portion corresponding to the skin suspension groove 2aa).
The cushion deformation suppressing portion 56 may be formed as a portion having high hardness (cushion high hardness portion) instead of the cushion wall thickness portion.

<Second Embodiment of Vehicle Seat>
Next, the vehicle seat S2 of the second embodiment will be described with reference to FIGS. 8, 9A and 9B.
The description of the contents overlapping with the above-mentioned vehicle seat S will be omitted.
The vehicle seat S2 includes a seat body, a movable body 130 (lumbar support member), a drive device 140 (actuator), a second movable body 150 (side support member), an actuating device 160 (fluid supply device), and a seat. A side airbag device 170, which is attached to the outer surface of the back 2 in the seat width direction and for cushioning an impact applied from the side of the vehicle, is provided.

The second movable body 150 is attached to the front surface of the movable body 130 in a folded state.
Specifically, the second movable body 150 is arranged with respect to the base member 151 supported by the outer end portion of the movable body 130 in the seat width direction and the seat front position from the base member 151 with respect to the base member 151. One bag body 154 arranged between the rotating member 153 attached so as to be rotatable via the rotating shaft 152 and the base member 151 and the rotating member 153 and supported on the front surface of the base member 151. It is mainly composed of and.

The side airbag device 170 is attached to the outer surface of the backside frame 121 and extends in the vertical direction along the backside frame 121.
At this time, the second movable body 150 is attached to the back side frame 121 at a position different from the portion to which the side airbag device 170 is attached, and is arranged on the front side of the seat with respect to the side airbag device.
Therefore, the interference between the second movable body 150 and the side airbag device 170 can be suppressed, and the second movable body 150 can be operated more preferably.

In the above configuration, as shown in FIGS. 8, 9A and 9B, the front surface of the backside frame 121 protrudes toward the front of the seat from the backside frame 121 at a position overlapping the second movable body 150 in the vertical direction. The linear member 180 is attached.
The linear member 180 is a wire member that is long in the vertical direction.
At this time, the second movable body 150 is arranged inside the linear member 180 in the seat width direction.
By doing so, the second movable body 150 is protected from the outside by the linear member 180. Therefore, the second movable body 150 can be suitably operated.
Instead of the linear member 180, a plate-shaped plate made of a metal material or a resin material may be adopted.

Further, in the above configuration, as shown in FIGS. 9A and 9B, a predetermined internal space is formed between the linear member 180 and the cushion member 102a located outside the linear member 180 in the seat width direction. ..
By doing so, when the second movable body 150 protrudes toward the front side of the seat (strictly speaking, the front side of the seat and the inside in the width direction of the seat) and the cushion material 102a is extruded toward the front side of the seat, the linear member 180 And the cushion material 102a (cushion material 102a located outside the linear member 180 in the seat width direction) can be prevented from interfering with each other. That is, the linear member 180 does not hinder the deformation of the cushion material 102a.
As a result, the second movable body 150 can suitably push out the side portion 102B (cushion material 102a) of the seat back 102.

<Other Other Embodiments>
In the above embodiment, as shown in FIG. 1, the movable body 30 and the second movable body 50 are attached to the seat back 2, but are not particularly limited and may be attached to the seat cushion 1. ..

In the above embodiment, as shown in FIGS. 2 and 3A, the movable body 30 is configured as a movable plate and the drive device 40 is configured as an actuator, but the movable body 30 can be changed without particular limitation.
For example, the "movable body" may be configured as a bag body (air cell), and the "driving device" may be configured as a fluid supply device.

In the above embodiment, as shown in FIGS. 2, 4A and 4B, the second movable body 50 is configured as a bag body (air cell) and the operating device 60 is configured as a fluid supply device, but the modification is not particularly limited. It is possible.
For example, the "second movable body" and the "actuating device" may be configured by a mechanical mechanism. Specifically, the "second movable body" may be configured to be movable by a link mechanism, a hinge mechanism, or the like, and the "actuating device" may be configured by a motor-type or hydraulic-type drive device or the like.

In the above embodiment, as shown in FIGS. 1 and 2, the movable body 30 and the second movable body 50 are arranged on the back surface side of the cushion material 2a, but the surface of the cushion material 2a is not particularly limited. It may be arranged on the side.

In the above embodiment, a vehicle seat used in an automobile has been described as a specific example, but the seat is not particularly limited, and is not particularly limited, a two-wheeled seat for a two-wheeled vehicle, a vehicle seat for a train or a bus, a vehicle seat for an airplane or a ship, or the like. In addition, it can be used for various seats such as office chairs for work, wheelchairs, and children's chairs for shopping carts.

In the present embodiment, the vehicle seat according to the present invention has been mainly described.
However, the above embodiment is merely an example for facilitating the understanding of the present invention, and does not limit the present invention. The present invention can be modified and improved without departing from the spirit thereof, and it goes without saying that the present invention includes an equivalent thereof.

S Vehicle seat Sa Seat frame 1 Seat cushion 1A, 2A Central part 1B, 2B Side part 1a, 2a, 3a, 102a Cushion material 1aa, 2aa Skin suspension groove 1b, 2b, 3b Skin material 2, 102 Seat back 2aa Suspension Groove side part (skin hanging groove)
2ab Suspension groove side part (skin suspension groove)
3 Headrest 3c Pillar 4 Reclining device 5 Height link device 6 Rail device 10 Cushion frame 11 Cushion side frame 12 Pan frame 13 Rear connecting frame 14 Elastic spring (elastic support member)
20, 120 Back frame 21, 121 Back side frame 22 Upper frame (connecting frame)
23 Lower frame 24 Wire member 25 Support plate 26, 126 Pillar mounting member 30, 130 Movable body (Lamba support member)
40, 140 Drive device (actuator)
41 Drive body 42 1st cable 43 2nd cable 44 3rd cable 50, 150 2nd movable body (side support member)
51, 151 Base member 52, 152 Rotating shaft 53, 153 Rotating member 54, 154 Bag body 54a to 54c 1st to 3rd bag body 55 Mounting member 56 Cushion deformation promoting unit 60, 160 Actuating device (fluid supply device)
61 Air control unit 62 Air pump 63 Air piping 170 Side airbag device 180 Linear member

Claims (14)

The seat body on which the seated person sits and
A movable body attached to the seat body and movable to switch a part of the seat body between a normal position and a movement position moved from the normal position.
A drive device attached to the seat body and driving the movable body,
A second movable body, which is attached to the seat body at a position different from that of the movable body and the driving device and is movable to project a part of the seat body toward the seated person, is provided.
The second movable body is a vehicle seat characterized in that it is arranged on the seated side of the driving device in the movable direction of the second movable body. The seat body is configured by covering a cushion material with a skin material.
The movable body is provided on the back surface of the cushion material at the central portion of the seat back in the seat width direction, and is movable to project the central portion of the seat back toward the seated person.
The second movable body is
The side portion of the seat back is provided on the back surface of the cushion material and is movable to project the side portion of the seat back.
The vehicle seat according to claim 1, wherein the seat is arranged on the front side of the seat with respect to the drive device. The vehicle seat according to claim 2, wherein the second movable body is arranged at a position above the drive main body portion of the drive device. The seat back includes a back frame that serves as a skeleton.
The back frame has a back side frame that is arranged on the left and right sides in the seat width direction and extends in the vertical direction.
The second movable body is attached to the front surface of the backside frame and is attached to the inner portion of the backside frame in the seat width direction.
2. The vehicle seats listed. The drive device is
Drive body and
It has a cable that connects the drive main body and the movable body and acts to move the movable body in accordance with the operation of the drive main body.
The cable extends in the vertical direction from the drive main body portion.
The vehicle seat according to claim 4, wherein a portion of the second movable body attached to the backside frame extends along the vertical direction of the backside frame. The vehicle seat according to any one of claims 2 to 5, wherein the second movable body is arranged on the seater side of the seating surface at the center of the seat back. On the surface of the cushion material, a skin suspension groove for suspending the terminal of the skin material is formed.
The skin suspension groove is provided at a position in the seat back to partition the central portion and the side portion, and extends in the vertical direction.
A portion of the back surface of the cushion material corresponding to the skin suspension groove is characterized in that a cushion deformation suppressing portion for suppressing deformation of the cushion material is formed around the skin suspension groove. The vehicle seat according to any one of claims 2 to 6. The movable body is a lamba support member attached to a lower portion of the seat back and for supporting the waist portion of the seated person.
2. The vehicle seats listed. The seat back includes a back frame that serves as a skeleton.
The back frame has a back side frame that is arranged on the left and right sides in the seat width direction and extends in the vertical direction.
The vehicle seat is attached to the outer surface of the backside frame in the seat width direction and includes a side airbag device for cushioning an impact applied from the side of the vehicle.
The second movable body is attached to a position different from the portion where the side airbag device is attached in the back side frame, and is arranged on the front side of the seat with respect to the side airbag device. The vehicle seat according to any one of claims 2 to 8. The seat back includes a back frame that serves as a skeleton.
The back frame is
The backside frame, which is placed on the left and right sides in the seat width direction and extends in the vertical direction,
It has a linear member attached to the front surface of the backside frame and protruding toward the front side of the seat from the backside frame.
The vehicle seat according to any one of claims 2 to 9, wherein the second movable body is arranged inside the linear member in the seat width direction. The second movable body has a plurality of bag bodies that swell when a fluid is sealed, and has a plurality of bag bodies.
The vehicle seat according to any one of claims 2 to 10, wherein the plurality of bag bodies are arranged at different positions in the front-rear direction of the seat and are configured from different sizes. The vehicle seat according to claim 11, wherein the first bag body located on the front side of the seat among the plurality of bag bodies has the smallest capacity as that of the other bag bodies. The seat back includes a back frame that serves as a skeleton.
The back frame has a back side frame that is arranged on the left and right sides in the seat width direction and extends in the vertical direction.
The second movable body is
The base member supported by the backside frame and
It has a plurality of bag bodies arranged at a position in front of the seat with respect to the base member and supported by the base member.
The vehicle seat according to any one of claims 2 to 12, wherein the side portion is projected toward the front side of the seat by bulging the plurality of bags. The second movable body has a rotating member that is arranged at a position in front of the seat with respect to the base member and is attached to the base member so as to be rotatable via a rotating shaft.
The plurality of bags are arranged between the base member and the rotating member, and the bag body is arranged between the base member and the rotating member.
The vehicle seat according to claim 13, wherein the rotating member rotates so that the side portions protrude toward the front side of the seat when the plurality of bag bodies bulge.

Images