JP2022058120A - Vehicle seat - Google Patents

Abstract

To provide a vehicle seat that is able to stably operate a movable body mounted in a seat body.SOLUTION: A vehicle seat includes: a seat back 2; and a movable body 30 that is mounted in the seat back 2 and is movable to project a side part of the seat back 2 toward a seated person side (a seat front side). A back frame 20 includes: back side frames 21 disposed on left and right sides in a seat width direction and extending vertically; an upper frame 22 connecting upper parts of the left and right back side frames 21; a second connection frame 26 disposed at a position different from the upper frame 22 and connecting the left and right back side frames 21; and a connection member 27 connecting the upper frame 22 and the second connection frame 26. The movable body 30 is mounted on the connection member 27 and extends outside in the seat width direction from the connection member 27.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 shoulder 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. A vehicle seat provided with the above 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, it has been required to operate a movable body (shoulder support member) for projecting the side portion of the seat body toward the seated person more stably. Further, it has been required to arrange the components including the movable body in the vehicle seat as compactly as possible.

In addition, when the movable body projects the side portion of the seat body toward the seated person, wrinkles or dubs may unintentionally occur on the surface of the seat body (specifically, the skin material). If so, there was a risk of spoiling the appearance of the vehicle seat.
For example, when the movable body projects the side portion of the seat body toward the seated person, the skin material is formed at the boundary portion between the center 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 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 stably operating a movable body attached to a seat body.
Another object of the present invention is to provide a vehicle seat in which the components of the vehicle seat can be compactly arranged.
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 attached to the seat body on which the seated person is seated and the inside of the seat body, and is movable to project a part of the seat body toward the seated person. A vehicle seat provided with a movable body, wherein the seat body includes a seat frame serving as a skeleton, and the seat frames are arranged on the left and right sides in the seat width direction and extend in a predetermined direction. A connecting frame that connects the frame, the ends of the left and right side frames in the extending direction, and the connecting frame are arranged at different positions in the extending direction of the side frame, and connect the left and right side frames. It is solved by having two connecting frames, a connecting member for connecting the connecting frame and the second connecting frame, and the movable body being attached to the connecting member.
With the above configuration, it is possible to realize a vehicle seat capable of stably operating a movable body attached to the seat body.
Specifically, the movable body is attached to a connecting member which is a component having relatively high rigidity in the seat frame. Therefore, even when a load by the seated person is applied to the movable body, the deformation of the movable body can be suppressed. As a result, the movable body can be operated stably.

At this time, the seat body is configured by placing the cushion material on the seat frame and covering it with the skin material, and the movable body is formed on the back surface of the cushion material at the side portion of the seat body in the seat width direction. It is preferable that the side portion of the seat body is provided and is movable so as to project toward the seated person, and is attached to the portion of the connecting member to which the second connecting frame is connected.
With the above configuration, the movable body is attached to a portion of the seat frame having higher rigidity. Therefore, the movable body can be operated more stably.

At this time, the seat frame has a back frame that serves as a skeleton of the seat back, the side frame is a back side frame extending in the vertical direction, and the connecting frame is the left and right back side frames. It is an upper frame that connects the upper end portions, and it is preferable that the connecting member extends in the vertical direction and is bridged between the upper frame and the second connecting frame.
With the above configuration, the movable body can be stably operated on the seat back. In addition, it is possible to compactly arrange the components (movable body, connecting member) of the vehicle seat in the seat back.

At this time, the movable body is arranged on the left and right sides of the back frame in the seat width direction, and the left and right movable bodies are attached to the connecting members provided on the left and right sides of the back frame, respectively. It is preferable that the connecting member extends outward in the width direction of the seat.
With the above configuration, the movable body can be compactly arranged on the side portion of the seat back, and the movable body can be suitably operated.

At this time, it is preferable that the connecting member has a support surface for supporting the movable body, and the support surface extends along the extending direction of the movable body to support the movable body.
With the above configuration, the movable body can be operated more stably.

At this time, the 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 are configured from different sizes. It is good to have it.
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 movable body.
Further, with 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 movable body has a base member supported by the connecting member, a plurality of bag bodies arranged at a position in front of the seat from the base member and supported by the base member, and a seat rather than the base member. It has a rotating member that is arranged at a front position and is attached to the base member so as to be rotatable via a rotation shaft, and the plurality of bag bodies are the base member and the rotation. The rotating member is arranged between the members, and the rotating member may rotate so that the side portion protrudes toward the front side of the seat by bulging the plurality of bag bodies.
With the above configuration, the movable body is suitably supported by the connecting member. As a result, the movable movement of the movable body (expansion and deployment of a plurality of bag bodies) can be stabilized. Further, by stabilizing the movable movement of the 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.
Further, by providing the rotating member as described above, the movable operation of the movable body can be further stabilized.

At this time, the back frame is attached to the upper frame and has a pillar mounting member for mounting a pillar that supports the main body of the headrest, and the connecting member is located outside the pillar mounting member in the seat width direction. It is good to be placed in.
With the above configuration, interference between the movable body and the pillar can be suppressed. In addition, it is possible to suppress the increase in size of the vehicle seat in the front-rear direction.

At this time, the back frame has a support plate that supports the seated person, and a second wire member that extends in the vertical direction and connects the second connecting frame and the support plate, and the connecting member comprises. It is preferable that the second wire member is arranged inside the second wire member in the seat width direction.
With the above configuration, it is possible to suppress the interference between the movable body and the second wire member. In addition, it is possible to suppress the increase in size of the vehicle seat in the front-rear direction.

At this time, on the surface of the cushion material, a skin suspension groove for suspending the terminal of the skin material is formed, and the skin suspension groove is arranged on the left and right sides in the seat width direction and is arranged in the vertical direction. It has a suspension groove side portion extending and a suspension groove upper portion extending in the seat width direction so as to connect the upper portions of the left and right suspension groove side portions, and the connecting member is the suspension groove upper portion. It is better to be placed above the position.
With the above configuration, the movable body and the connecting member and the skin suspension groove are arranged at positions separated from each other in the vertical direction. Therefore, it is possible to suppress the occurrence of wrinkles and dubs on the skin material of the seat back.
More specifically, it has been found that when the movable body projects the side portion of the seat body toward the seated person, wrinkles and dubs generally occur in the skin material around the skin suspension groove. Therefore, care can be taken to prevent wrinkles and dubs from occurring in the skin material in the surrounding area.

According to the present invention, it is possible to realize a vehicle seat capable of stably operating a movable body attached to the seat body.
Further, according to the present invention, the movable body is attached to a portion of the seat frame having higher rigidity. Therefore, the movable body can be operated more stably.
Further, according to the present invention, the components (movable body, connecting member) of the vehicle seat can be compactly arranged in the seat back.
Further, according to the present invention, the movable body can be compactly arranged on the side portion of the seat back, and the movable body can be suitably operated.
Further, according to the present invention, by inflating a plurality of bags having different positions and sizes, it is possible to adjust the protruding direction and the amount of protrusion of the seat back by the movable body. Further, by adjusting the protruding direction and the amount of protrusion 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.
Further, according to the present invention, the movable body is suitably supported by the connecting member. As a result, the movable movement of the movable body (expansion and deployment of a plurality of bag bodies) can be stabilized. In addition, 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, it is possible to suppress the interference between the movable body and the pillar. Further, it is possible to suppress the interference between the movable body and the second wire member. In addition, it is possible to suppress the increase in size of the vehicle seat in the front-rear direction.
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 in the skin material around the skin suspension groove.

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 front view which shows the seat frame. It is a front view which shows the seat for a vehicle, and is the figure explaining the positional relationship between a movable body and a connecting member, and a skin suspension groove. FIG. 1 is a sectional view taken along line VV of FIG. 1 for explaining a state in which a movable body is not movable and a side portion of a seat back is in a “normal position”. It is a figure explaining the state which the movable body is movable, and the side part of a seat back is in a "protruding position". It is a figure which shows the modification 1 of the movable body, and is the figure explaining the state which the side part of a seat back is in a "normal position". It is a figure explaining the state which the side part of a seat back is in a "protruding position". It is a figure which shows the modification 2 of the movable body, and is the figure explaining the state which the side part of a seat back is in a "normal position". It is a figure explaining the state which 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. 7A and 7B.
The present embodiment is a vehicle seat that is attached to the inside of the seat body and has a movable body that is movable to project the side portion of the seat body in the seat width direction toward the seater, and the seat frame is a seat. A side frame that is arranged on the left and right sides in the width direction and extends in a predetermined direction, a connecting frame that connects the ends of the left and right side frames in the extending direction, and a connecting frame that is placed at a position different from the connecting frame, and is placed on the left and right sides. A vehicle seat having a second connecting frame for connecting the side frames and a connecting member for connecting the connecting frame and the second connecting frame, the main feature of which is that the movable body is attached to the connecting member. It relates to the invention of.
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 (shoulder support member) that is movable to move the side portion 2B of the seat back 2 between the "normal position" and the "protruding position" that protrudes toward the seater from the normal position. A working device 40 (fluid supply device) that operates to move the movable body 30 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 FIGS. 1 and 4, 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 the skeleton, and the skin is covered. It is configured to be covered with the material 2b.
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, the left and right suspension groove side portions 2aa (skin suspension groove) extending in the vertical direction so as to separate the central portion 2A and the left and right side portions 2B, and the left and right suspension groove side portions. A suspension groove upper portion 2ab (skin suspension groove) extending in the seat width direction is formed so as to connect the upper portions of the 2aa.

As shown in FIGS. 1 and 4, the headrest 3 is a head that supports the occupant's head from behind, and the cushion material 3a is placed on the pillar 3c as the core material and covered with the skin material 3b. It is configured.
As shown in FIG. 4, a pillar mounting member 29 for mounting a pillar 3c that supports the main body of the headrest 3 is assembled on the upper portion of the back frame 20.

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 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 FIGS. 2 to 4, the back frame 20 is composed of a substantially rectangular frame-like body, and is an inverted frame that connects the back side frames 21 arranged on the left and right sides and the upper end portions of the back side frames 21. A U-shaped upper frame 22, a plate-shaped lower frame 23 connecting the lower end portions of each backside frame 21, and a plurality of wire members 24 (elastic wires) extending in the vertical direction and hooked to the lower frame 23. ), And a support plate 25 that is held by a plurality of wire members 24 and supports the seated person.
Further, the back frame 20 is arranged at a position different from that of the upper frame 22 in the extending direction of the back side frame 21, and is connected to a second connecting frame 26 (cross member) that connects the upper portions of the left and right back side frames 21. It includes a connecting member 27 (connecting bracket) that connects the upper frame 22 and the second connecting frame 26, and a second wire member 28 that extends in the vertical direction and connects the second connecting frame 26 and the support plate 25. ..
Further, 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 29 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.

The connecting member 27 is a bracket extending in the vertical direction and having a substantially rectangular cross section, and is bridged between the front surface of the upper frame 22 and the front surface of the second connecting frame 26.
The connecting members 27 are arranged on the left and right at predetermined intervals in the seat width direction.
Left and right movable bodies 30 are attached to the front surfaces of the left and right connecting members 27, respectively.

In the above configuration, as shown in FIG. 3, the connecting member 27 is arranged at a position outside the pillar mounting member 29 in the seat width direction.
Therefore, it is possible to suppress the interference between the movable body 30 attached to the connecting member 27 and the pillar 3c attached to the pillar attaching member 29. Further, it is possible to suppress the increase in size of the vehicle seat S in the front-rear direction.

In the above configuration, as shown in FIG. 3, the connecting member 27 is arranged inside the second wire member 28 in the seat width direction.
Therefore, it is possible to suppress the interference between the movable body 30 attached to the connecting member 27 and the second wire member 28. Further, it is possible to suppress the increase in size of the vehicle seat S in the front-rear direction.

In the above configuration, as shown in FIG. 4, the connecting member 27 is arranged at a position above the skin suspension groove (suspension groove upper portion 2ab).
Therefore, the movable body 30 attached to the connecting member 27 and the skin suspension groove (suspension groove upper portion 2ab) are arranged at positions separated in the vertical direction. Therefore, it is possible to suppress the occurrence of wrinkles and dubs on the skin material 2b of the seat back 2.
More specifically, it is known that when the movable body 30 projects the side portion 2B of the seat back 2 toward the front side of the seat, wrinkles and dubs generally occur in the skin material 2b around the skin suspension groove. Therefore, care can be taken so that wrinkles and dubs do not occur in the skin material 2b in the surrounding area.

As shown in FIGS. 2-A and 5B, the movable body 30 has a bag body (air cell) that swells when a fluid is sealed, and the seated side is filled with compressed air as a fluid. It swells to (protrudes from the normal position to the protruding position) and contracts (returns to the normal position) when the enclosed compressed air is discharged.
Specifically, the movable body 30 is a shoulder support member that is attached to the back surface of the cushion material 2a at the side portion 2B of the upper portion of the seat back 2 and is movable to project the side portion 2B toward the seated person.
The movable bodies 30 are arranged on the left and right at predetermined intervals in the seat width direction, and are attached to the front surfaces of the connecting members 27, respectively. More specifically, the second connecting frame 26 is attached to the connected overlapping portion of the front surface of the connecting member 27.
The movable body 30 is attached in a folded state.

The movable body 30 has a substantially pentagonal shape that is long in the seat width direction, and extends from the connecting member 27 so as to project outward in the seat width direction.
More specifically, the movable body 30 is composed of a base member 31 supported by the connecting member 27, and a plurality of bag bodies 32 arranged at a position in front of the seat and supported on the front surface of the base member 31. It is mainly composed.

The base member 31 is a plate member that is long in the seat width direction, and is bridged (connected) between the front surface of the connecting member 27 and the front surface of the backside frame 21.
The plurality of bag bodies 32 are supported by the base member 31, and can bulge toward the front side of the seat by enclosing compressed air from the folded state.
The plurality of bag bodies 32 are attached to the base member 31 by the attachment member 33 provided at the inner end portion in the seat width direction in the front surface of the base member 31.

The plurality of bag bodies 32 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 32 are composed of three bag bodies, and among the plurality of bag bodies 32, the first bag body 32a 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 32b is the largest, and the capacity of the third bag 32c 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 32 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.

In the above configuration, the movable body 30 is movable (inflated) in order to move the side portion 2B (shoulder portion) of the seat back 2 from the “normal position” shown in FIG. 5A to the “protruding position” shown in FIG. 5B. )be able to. Hereinafter, it will be described in detail.

FIG. 5A 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 movable body 30 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 connecting member 27 and is arranged on the back surface of the cushion material 2a.

An actuating device 40 (fluid supply device) that supplies compressed air to a plurality of bag bodies 32 (air cells) is arranged at a position behind the cushion material 2a inside the seat back 2.
The actuating device 40 is attached to a predetermined position in the central portion of the back frame 20. Specifically, it is mainly composed of an air pump 41 capable of supplying (supplying) and discharging (exhausting) compressed air, and an air pipe 42 connecting the air pump 41 and the movable body 30 (bag body 32). ing.

The operating device 40 can supply compressed air to the bag 32 and discharge compressed air from the bag 32, for example, by receiving a predetermined control signal from a control device (not shown). At this time, the control device may receive the selection of a predetermined user operation by the seated person and transmit the control signal.
By doing so, it becomes possible to adjust the movable range of the movable body 30 according to the physique of the seated person.

FIG. 5B is a diagram showing a state in which the movable body 30 (bag body 32) 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 40, the folded bag body 32 bulges and expands to the front of the seat, so that the side portion 2B moves to the front of the seat. As a result, the side portion 2B of the seat back 2 moves to the "protruding position".
The compressed air inside the bag 32 is discharged by the actuating device 40, so that the inflated bag 32 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".

In the above configuration, as shown in FIG. 5B, the movable body 30 (bag body 32) is configured so that the side portion of the seat back 2 projects in front of the seat and inward in the seat width direction.
In particular, the left and right shoulders of the seat back 2 are configured to project in front of the seat and diagonally downward inward in the seat width direction.
By doing so, the seating feeling of the seated person can be enhanced.

<Modification example 1 of movable body>
Next, a modification 1 of the “movable body” will be described with reference to FIGS. 6A and 6B.
The description of the contents overlapping with the above-mentioned vehicle seat S will be omitted.
The movable body 130 includes a base member 131, a rotating member 133 which is arranged at a position in front of the seat of the base member 131 and is attached to the base member 131 so as to be rotatable via a rotating shaft 132. It is mainly composed of one bag body 134 which is arranged between the base member 131 and the rotating member 133 and is supported on the front surface of the base member 131.

The base member 131 is bridged between the front surface of the connecting member 127 and the front surface of the back side frame 121.
The rotating shaft 132 is attached to the inner end portion of the front surface of the base member 131 in the seat width direction. In other words, the base member 131 and the connecting member 127 are attached to the overlapping portion.
The rotating member 133 is rotatably attached to the base member 131 in the front-rear direction of the seat, and by rotating toward the front of the seat, the side portion 102B of the seat back 102 is projected toward the front of the seat ( Can be extruded).
The rotating member 133 is arranged at a position closer to the base member 131 when the seat back 102 is in the normal position. It may be urged to the base member 131 side by an urging spring (urging member) (not shown).

The bag body 134 is supported by the base member 131, and when compressed air is sealed, the bag body 134 swells toward the front side of the seat, and the rotating member 133 can be pushed out toward the front side of the seat. That is, the rotating member 133 can be rotated forward of the seat.

FIG. 6B is a diagram showing a state in which the movable body 130 (rotating member 133) protrudes forward of the seat and the side portion 102B of the seat back 102 moves from the “normal position” to the “protruding position”.
Specifically, by receiving the supply of compressed air from the operating device 140, the folded bag body 134 bulges and expands toward the front of the seat, and the rotating member 133 is pushed out toward the front of the seat to the side. The portion 102B moves to the front of the seat. As a result, the side portion 102B moves to the "protruding position".

<Transformation example 2 of movable body>
Next, a modification 2 of the “movable body” will be described with reference to FIGS. 7A and 7B.
The movable body 230 is composed of a plurality of bag bodies 231 supported on the front surface of the connecting member 227.
The plurality of bag bodies 231 are bridged between the front surface of the connecting member 227 and the front surface of the back side frame 121.
At this time, the connecting member 227 has a support surface 227a that supports the movable body 230 (bag body 231), and the support surface 227a extends along the extension direction of the bag body 231 to support the bag body 231. are doing. In other words, the support surface 227a and the bag body 231 are arranged so as to overlap each other along the sheet width direction.

The plurality of bag bodies 231 are composed of three bag bodies, are arranged at different positions in the front-rear direction of the seat and the width direction of the seat, and are configured from different sizes.
The plurality of bag bodies 231 are attached to the connecting member 227 by the mounting member 232 provided at the inner end portion in the seat width direction of the support surface 227a of the connecting member 227.

FIG. 7B is a diagram showing a state in which the movable body 230 (bag body 231) protrudes forward of the seat and the side portion 202B of the seat back 202 moves from the “normal position” to the “protruding position”.
Specifically, the side portion 202B moves to the front of the seat as the folded bag body 231 bulges and expands to the front of the seat. As a result, the side portion 202B of the seat back 202 moves to the "protruding position".

<Other Other Embodiments>
In the above embodiment, as shown in FIG. 1, the movable body 30 is attached to the upper portion of the seat back 2, but is not particularly limited and may be attached to the central portion of the seat back 2. However, it may be attached to the lower portion of the seat back 2.
Alternatively, the movable body 30 may be attached to the seat cushion 1.

In the above embodiment, as shown in FIGS. 5A and 5B, the movable body 30 is configured as a bag body (air cell) and the operating device 40 is configured as a fluid supply device, but the movable body 30 can be changed without particular limitation.
For example, the "movable body" and the "actuating device" may be configured by a mechanical mechanism. Specifically, the "movable member" 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. 5A and 5B, the movable body 30 is arranged on the back surface side of the cushion material 2a, but is not particularly limited, and may be arranged on the front surface side of the cushion material 2a. good.

In addition to the above embodiment, a plurality of through holes penetrating in the front-rear direction of the seat may be formed in the portion of the cushion material 2a facing the movable body 30.
At this time, it is preferable that the plurality of through holes and the connecting member 27 are provided at overlapping positions in the seat width direction. Alternatively, it is preferable that a plurality of through holes are arranged at positions outside the connecting member 27 in the seat width direction.
By doing so, the cushion material 2a is suitably easily bent, and the movable body 30 can be operated stably.

In addition to the above embodiment, it is preferable that the left and right connecting members 27 and the left and right skin suspension grooves (suspension groove side portions 2aa) are provided at positions where they overlap in the seat width direction. Alternatively, it is preferable that the left and right connecting members 27 are arranged at positions outside the left and right skin suspension grooves (suspension groove side portions 2aa) in the seat width direction.
By doing so, the cushion material 2a is suitably easily bent, and the movable body 30 can be operated stably.

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, 102B, 202B Side part 1a, 2a, 3a Cushion material 1aa Skin suspension groove 1b, 2b, 3b Skin material 2, 102, 202 Seat back 2aa Suspension groove side part (skin suspension 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 Back frame 21, 121 Back side frame 22 Upper frame (connecting frame)
23 Lower frame 24 Wire member 25 Support plate 26 Second connecting frame (cross member)
27, 127, 227 Connecting member 227a Support surface 28 Second wire member 29 Pillar mounting member 30 Movable body (shoulder support member)
31 Base member 32 Bag body 32a to 32c 1st bag body to 3rd bag body 33 Mounting member 40, 140 Actuating device (fluid supply device)
41 Air pump 42 Air piping 130, 230 Movable body 131 Base member 132 Rotating shaft 133 Rotating member 134 Bag body 231 Bag body 232 Mounting member

Claims (10)

The seat body on which the seated person sits and
A vehicle seat provided with a movable body attached to the inside of the seat body and movable to project a part of the seat body toward the seated person.
The seat body includes a seat frame that serves as a skeleton.
The seat frame is
Side frames that are arranged on the left and right sides in the seat width direction and extend in a predetermined direction,
A connecting frame that connects the ends of the left and right side frames in the extending direction,
A second connecting frame, which is arranged at a different position from the connecting frame in the extending direction of the side frame and connects the left and right side frames,
It has a connecting frame and a connecting member that connects the second connecting frame.
The movable body is a vehicle seat, characterized in that it is attached to the connecting member. The seat body is configured by placing a cushion material on the seat frame and covering it with a skin material.
The movable body is
It is provided on the back surface of the cushion material at the side portion of the seat body in the seat width direction, and is movable to project the side portion of the seat body toward the seated person.
The vehicle seat according to claim 1, wherein the second connecting frame is attached to a connected portion of the connecting member. The seat frame has a back frame that serves as a skeleton of the seat back.
The side frame is a back side frame extending in the vertical direction.
The connecting frame is an upper frame that connects the upper ends of the left and right backside frames.
The vehicle seat according to claim 2, wherein the connecting member extends in the vertical direction and is bridged between the upper frame and the second connecting frame. The movable body is arranged on the left and right sides of the back frame in the seat width direction.
The left and right movable bodies are
Attached to the connecting members provided on the left and right sides of the back frame, respectively,
The vehicle seat according to claim 3, wherein the connecting member extends outward in the width direction of the seat. The connecting member has a support surface that supports the movable body, and has a support surface.
The vehicle seat according to claim 4, wherein the support surface extends along an extension direction of the movable body to support the movable body. The movable body has a plurality of bag bodies that swell when a fluid is sealed, and the movable body has a plurality of bags.
The vehicle seat according to any one of claims 3 to 5, 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 movable body is
The base member supported by the connecting member and
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, and
It 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 6, 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. The back frame is attached to the upper frame and has a pillar mounting member for mounting pillars that support the main body of the headrest.
The vehicle seat according to any one of claims 3 to 7, wherein the connecting member is arranged at a position outside the pillar mounting member in the seat width direction. The back frame is
A support plate that supports the seated person and
It has a second wire member that extends in the vertical direction and connects the second connecting frame and the support plate.
The vehicle seat according to any one of claims 3 to 8, wherein the connecting member is arranged inside the second wire member in the seat width direction. 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
Suspended groove side parts that are arranged on the left and right sides in the seat width direction and extend in the vertical direction,
It has a suspension groove upper portion extending in the seat width direction so as to connect the upper portions of the suspension groove side portions on the left and right.
The vehicle seat according to any one of claims 3 to 9, wherein the connecting member is arranged at a position above the suspension groove upper portion.

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