JP6547586B2 - Vehicle seat - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a vehicle seat, and more particularly to a vehicle seat provided with a side support device for assisting passenger's getting on and off operations.

Conventionally, in the seat cushion on which the occupant can sit, the seating surface is set back so that the seating surface protrudes from the central portion in the seat width direction and the seating surface protrudes from the central portion. There is known a vehicle seat provided with a side support device movably supported between the provided retracted position.
When the side portion of the seat cushion is supported by the side support device in the upright position, the holding performance of the occupant can be improved when the occupant is seated. Then, when the side portion is supported at the retracted position, when the passenger opens the door of the vehicle and gets on and off, it is possible to reduce the load for the passenger to get over the side portion.

For example, in a vehicle seat provided with the passenger support device described in Patent Document 1, the side frame that supports the side portion of the seat cushion so as to be movable between the upright position and the reclined position, and the seating cushion of the occupant is the seat cushion And a lock mechanism that locks the side frame when hung in the center of the frame.
Specifically, the lock mechanism locks the side portion in the upright position when the occupant is seated on the seat body, and unlocks the side frame when the occupant stands up and gets on and off.

Further, in a vehicle seat provided with the passenger support device described in Patent Document 2, a cushion holder that supports the side support cushion so as to be movable between an upright position and an inclined position, and an upright holding device that holds the cushion holder in the upright position. And a rising and holding release device for releasing the rising and holding state of the cushion holder and moving the cushion holder from the rising position to the tilting position.
Specifically, the upright holding state of the cushion holder is released when the vehicle door is opened for the passenger to get on and off the vehicle, and the cushion holder is returned to the upright holding state when the vehicle door is closed after getting on and off the passenger. .

Japanese Patent Application Laid-Open No. 61-57435 Unexamined-Japanese-Patent No. 2007-282746

By the way, a rear seat in which the belt portion of the seat belt is placed on the side portion of the seatback can be considered in the vehicle seat with the passenger support device as in Patent Documents 1 and 2. In this case, when the position of the side portion of the seat cushion is switched by the passenger support device, for example, the lower end of the belt portion may come into contact with the side portion to affect the seat belt.
Therefore, there has been a demand for a vehicle seat capable of suppressing the influence on the seat belt even when the position of the side portion of the seat cushion is switched by the passenger support device.

Moreover, in the passenger support device as in Patent Documents 1 and 2, the side portion is locked or unlocked at the upright position along with the seating operation of the occupant and the opening and closing operation of the vehicle door. It has been required to securely lock the side portion in the upright position except when getting on and off the vehicle.
As a reason, for example, when the occupant makes an operation to slightly rise from the seat body, or makes an operation to open the vehicle door while the occupant is seated, the side portion of the seat cushion is inclined and is seated. There is a risk that the holdability of some passengers may be impaired.

In general, a vehicle seat includes a reclining device that rotatably connects a seat back to a seat cushion, and a slide rail device that slidably connects a seat cushion to a vehicle floor in a seat longitudinal direction. When attaching the mounting / demounting support device to the seat cushion, it has been desired to make the arrangement compact in consideration of the positional relationship so as not to interfere with each other.
In addition, since the vehicle seat has a relatively complicated structure by including the above-described device and the like, it has been desired to facilitate the assembly work of the component parts.

In addition, it has generally been desired for passengers to be supported by a passenger support device, especially when getting off.
Therefore, there has been a demand for a passenger support device capable of assisting the occupant's getting-off operation more reliably.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a side support device capable of assisting the passenger's getting on and off operations, and to affect the seat belt when the device is operated. Providing a vehicle seat capable of suppressing
Another object of the present invention is to provide a vehicle seat provided with a side support device capable of assisting the passenger's getting on / off operation while stably securing the holding property of a seated passenger. is there.
In addition, another object of the present invention is to provide a vehicle seat provided with a side support device capable of assisting an occupant's getting-off operation more reliably.

According to the vehicle seat of the present invention, the above-mentioned subject is a seat cushion and a seat back on which the occupant can sit, and the seat cushion can normally seat the occupant at least a part of the side portion in the seat width direction. position and, a vehicle seat and a side support device for supporting so as to be switchable between a auxiliary position for assisting the occupant riding operation or exit movement, the side support device, The seatback is disposed in front of a portion of the seatbelt placed in front of the side portion in the seat width direction of the seatback, and at least one of the seat cushion and the seatback has the side support device For restricting movement of a part of the seat belt when the position is switched Belt movement restricting portion is provided, the belt movement restricting portion, the provided on the seat cushion, when the position of the side portion is switched, and at least a portion of the side portion, and a portion of the seat belt It is solved by regulating so that it does not contact .
According to the above configuration, it is possible to realize a vehicle seat capable of suppressing an influence on a part of the seat belt when the position of the side portion of the seat cushion is switched by the operation of the side support device.
More specifically, since the movement of a part (belt part) of the seat belt is restricted by the belt movement restricting part, for example, the occurrence of play of the seat belt can be suppressed, and the restraint performance of the occupant by the seat belt is good. Can be secured.
Further, with the above configuration, the influence on the part of the seat belt can be reliably suppressed by the belt movement regulating unit.

Further, according to the vehicle seat of the present invention, the occupant can seat the seat cushion and the seat back for seating the occupant, and at least a part of the side portion in the seat width direction of the seat cushion. A vehicle seat comprising a side support device supported so as to be switchable between a normal position and an auxiliary position for assisting the passenger's getting-in operation or getting-off operation, wherein the side support device is The seatback is disposed in front of a portion of the seatbelt placed in front of the side portion in the seat width direction of the seatback, and at least one of the seat cushion and the seatback has the side support device Restricts movement of a part of the seat belt when the position is switched A belt movement restricting portion is provided, and the belt movement restricting portion is provided on the seat cushion and restricts so that at least a part of the side portion and a part of the seat belt are not always in contact with each other. It also solves by.
According to the above configuration, it is possible to reliably suppress the influence on a part of the seat belt by the belt movement regulating unit.

Further, according to the vehicle seat of the present invention, the occupant can seat the seat cushion and the seat back for seating the occupant, and at least a part of the side portion in the seat width direction of the seat cushion. A vehicle seat comprising a side support device supported so as to be switchable between a normal position and an auxiliary position for assisting the passenger's getting-in operation or getting-off operation, wherein the side support device is The seatback is disposed in front of a portion of the seatbelt placed in front of the side portion in the seat width direction of the seatback, and at least one of the seat cushion and the seatback has the side support device Restricts movement of a part of the seat belt when the position is switched And the side portion is provided between a first side portion supported to be switchable by the side support device, and the first side portion and a portion of the seat belt. It solves also by having a 2nd side part, and the 2nd side part constituting at least one copy of the belt movement control part.
At this time, the first side portion is a movable side portion movable between the normal position and the auxiliary position, and the second side portion is a fixed side portion fixed at the normal position. Good to have.
As described above, the second side portion (fixed side portion) is provided as a relief portion for avoiding contact with the first side portion (movable side portion) supported by the side support device and a portion of the seat belt. Therefore, even when the side support device operates, the influence on the seat belt can be suppressed more reliably.

Further, according to the vehicle seat of the present invention, the occupant can seat the seat cushion and the seat back for seating the occupant, and at least a part of the side portion in the seat width direction of the seat cushion. A vehicle seat comprising a side support device supported so as to be switchable between a normal position and an auxiliary position for assisting the passenger's getting-in operation or getting-off operation, wherein the side support device is The seatback is disposed in front of a portion of the seatbelt placed in front of the side portion in the seat width direction of the seatback, and at least one of the seat cushion and the seatback has the side support device Restricts movement of a part of the seat belt when the position is switched And a belt assist device capable of moving at least a part of the seat belt to a position where it can easily reach from the seated occupant, the belt movement regulator being provided on the seat cushion Even when the belt assist device is in operation, at least a part of the side portion and a part of the seat belt moved to the easily accessible position are prevented from coming into contact with each other. Solve.
According to the above configuration, even if a portion of the seat belt is pushed out to a front position where it can be easily reached from the occupant, for example, by the operation of the belt assist device, the side portion of the seat cushion and the portion of the seat belt The influence on the seat belt can be suppressed without contact.

Further, according to the vehicle seat of the present invention, the occupant can seat the seat cushion and the seat back for seating the occupant, and at least a part of the side portion in the seat width direction of the seat cushion. A vehicle seat comprising a side support device supported so as to be switchable between a normal position and an auxiliary position for assisting the passenger's getting-in operation or getting-off operation, wherein the side support device is The seatback is disposed in front of a portion of the seatbelt placed in front of the side portion in the seat width direction of the seatback, and at least one of the seat cushion and the seatback has the side support device Restricts movement of a part of the seat belt when the position is switched And a belt assist device capable of moving at least a part of the seat belt to a position easily accessible from the seated occupant, and controlling operations of the belt assist device and the side support device. A control device, which controls the operation of the side support device to prevent at least a part of the side portion from moving when the belt assist device is in operation, or the side portion The problem is also solved by limiting the amount of movement of at least part of
According to the above configuration, the belt assist device can be operated with priority, and the seated occupant can pick up and attach the seat belt more securely.

Further, according to the vehicle seat of the present invention, the occupant can seat the seat cushion and the seat back for seating the occupant, and at least a part of the side portion in the seat width direction of the seat cushion. A vehicle seat comprising a side support device supported so as to be switchable between a normal position and an auxiliary position for assisting the passenger's getting-in operation or getting-off operation, wherein the side support device is The seatback is disposed in front of a portion of the seatbelt placed in front of the side portion in the seat width direction of the seatback, and at least one of the seat cushion and the seatback has the side support device Restricts movement of a part of the seat belt when the position is switched A side plate device which moves between the normal position and the auxiliary position while supporting at least a part of the side portion, and the side plate locks the side plate in the normal position. Lock device and a lock release device for releasing the lock state of the lock device, the lock release device being disposed on a side portion in the seat width direction of the seat cushion, for releasing the lock state The lock release member is operable to release the lock state from the lock position for maintaining the lock state by applying a predetermined load to the seating surface of the side portion. It also solves by moving to the unlocked position of.
With the above configuration, in order to move the side portion of the seat cushion from the normal position to the entrance / exit assistance position when the passenger gets on / off the vehicle, a predetermined load is applied to the seating surface of the side portion in the seat cushion to release the lock Need to work.
Therefore, the unlocking device can be operated according to the operation from the passenger getting on to the seating or the operation from the passenger sitting to the getting off than in the conventional example.
That is, it is possible to realize a side support device capable of assisting the passenger's getting on / off operation while stably securing the holding property of the seated passenger.

At this time, the lock release member is a first lock release member, and the lock release device further includes a second lock release member operable to release the lock state, and the first lock release member The second lock release member may be disposed at the central portion of the seat cushion, and the second unlocking member may be disposed at the side portion of the seat cushion.
According to the above configuration, in order to move the side portion of the seat cushion from the normal position to the getting on / off assisting position when the passenger gets on / off the vehicle, it is necessary to operate the two unlocking members.
As a result, the side portion can be more reliably locked in the normal position when the occupant gets on or off the vehicle.

At this time, the unlocking device releases the locked state when the second unlocking member moves from the locking position to the unlocking position in a state where the first unlocking member is positioned at the unlocking position. Good.
With the above configuration, the first unlocking member is positioned at the unlocking position when the occupant is seated, and the second unlocking member is unlocked from the locking position when the seated occupant is about to get off the vehicle. In order to move to the position, it is possible to operate the unlocking member suitably in response to the motion of the seated occupant getting off the vehicle.

ADVANTAGE OF THE INVENTION According to this invention, when the position of the side part of a seat cushion switches by operation | movement of a side support apparatus, the vehicle seat which can suppress the influence on a part of seat belt can be implement | achieved.
More specifically, since the movement of a part (belt part) of the seat belt is restricted by the belt movement restricting part, for example, the occurrence of play of the seat belt can be suppressed, and the restraint performance of the occupant by the seat belt is good. Can be secured.
Further , according to the present invention, the influence on the part of the seat belt can be reliably suppressed by the belt movement restricting portion.
Further, according to the present invention, the second side portion (fixed side portion) is provided as a relief portion for avoiding contact with the first side portion (movable side portion) supported by the side support device and a portion of the seat belt. Therefore, even when the side support device operates, the influence on the seat belt can be more reliably suppressed.
Further, according to the present invention, even when the belt assist device is operated, the influence on the seat belt can be suppressed without the side portion of the seat cushion coming into contact with a part of the seat belt by the belt movement restricting portion. .
Further, according to the present invention, the belt assist device can be operated with priority, and the seated occupant can pick up and attach the seat belt more securely.
Further, according to the present invention, in order to move the side portion of the seat cushion from the normal position to the getting on / off assisting position when the passenger gets on / off the vehicle, a predetermined load is applied to the seating surface of the side portion in the seat cushion. It is necessary to operate the unlocking member. Therefore, the unlocking device can be operated according to the operation from the passenger getting on to the seating or the operation from the passenger sitting to the getting off than in the conventional example.
Further, according to the present invention, in order to move the side portion of the seat cushion from the normal position to the entrance / exit assistance position when the occupant gets on / off the vehicle, it is necessary to operate the two unlocking members. As a result, the side portion can be more reliably locked in the normal position when the occupant gets on or off the vehicle.
Further, with the above configuration, the seating load from the occupant can be more efficiently transmitted to the two unlocking members at the side portion of the seat cushion.
Further, according to the present invention, it is possible to operate the lock release member suitably in response to the operation of the seated occupant getting off the vehicle.

It is an appearance perspective view of a seat for vehicles of this embodiment. It is an external appearance top view of a vehicle seat. It is a figure explaining the state of a sheet | seat main body in a normal position. It is a figure explaining the state to which the sheet | seat main body moved to the reclining position from the normal position. It is a perspective view of a seat frame used as a frame. It is a top view of the cushion frame used as a frame. It is a disassembled perspective view which shows the assembly | attachment structure of a cushion frame and a cushion material. It is a perspective view showing a slide bar device. It is a figure explaining the state of a seat frame of a usual position. It is a figure explaining the state where a seat frame moved to a reclining position from a usual position. It is a principal part enlarged view of FIG. 1, and is a perspective view which shows a belt assist apparatus. It is an exploded perspective view of a belt assist device. It is a perspective view showing a side support device. It is a figure which shows a mode before a passenger | crew gets in. FIG. It is a figure showing the state of the side support device before a passenger gets in. It is a figure which shows a mode that a passenger | crew is boarding. It is a figure which shows the state of the side support apparatus at the time of a passenger | crew boarding. It is a figure which shows a mode that a passenger | crew is boarding. It is a figure which shows the state of the side support apparatus at the time of a passenger | crew boarding. It is a figure which shows a mode that a passenger | crew is sitting on. It is a figure which shows the state of the side support apparatus when a passenger | crew is seated. It is a figure which shows a mode that a passenger | crew is alighting. It is a figure which shows the state of the side support apparatus at the time of a passenger | crew alighting. It is a figure which shows a mode that a passenger | crew is alighting. It is a figure which shows the state of the side support apparatus at the time of a passenger | crew alighting. It is a figure which shows a mode after a passenger | crew alights. It is a figure which shows the state of the side support apparatus after a passenger | crew alights. The side support apparatus of FIG. 12B WHEREIN: A locking device is a figure which shows the state which locked the side part in the normal position. The side support apparatus of FIG. 13B WHEREIN: It is a figure which shows the state which the 2nd lock release lever moved to the lock release position from the lock position. The side support apparatus of FIG. 14B is a figure which shows the state which moved to the lock release position in order of a 2nd lock release lever and a 1st lock release lever. In the side support apparatus of FIG. 15B, it is a figure which shows the state which the 2nd lock release lever returned to the lock position from the lock release position. The side support apparatus of FIG. 16B is a figure which shows the state which moved to the lock release position in order of the 1st lock release lever and the 2nd lock release lever. In the side support device of FIG. 17B, the lock device is unlocked, and the side portion is moved from the normal position to the exit assist position. It is a figure which shows the state where it returned to the locking position in order of the 1st lock release lever in the side support apparatus of FIG. 18B, and a 2nd lock release lever, and the lock device was locked again.

Hereinafter, a vehicle seat according to an embodiment of the present invention will be described with reference to FIGS.
The present embodiment is a vehicle seat provided with a side support device for movably supporting at least a part of a side portion of a seat cushion between a normal position and a getting-off assist position, the side support device being a seatback back The seat belt belt is disposed at a position forward of the belt portion of the seat belt placed in front of the side portion, and at least one of the side portion and the back side portion switches the position of the side portion by the side support device. The present invention relates to the invention of a vehicle seat characterized in that a belt movement restricting portion for restricting the movement of the portion is provided.
Further, the belt movement restricting portion includes a plurality of fixed side portions which are a part of the side portions of the seat cushion, a side projection portion which is a part of the back side portion of the seat back, and a movable member of the belt assist device. And a protruding portion which becomes a portion.
The side where the occupant sits on the seat back of the seating seat is the seat front side.

The vehicle seat S of the present embodiment is, for example, a rear seat corresponding to a rear seat of a vehicle.
As shown in FIGS. 1 and 2, the vehicle seat S has a seat cushion 1, a seat back 2, and a headrest 3, and a seat body on which a passenger can sit, and the seat cushion 1 against a vehicle body floor. A seat switching device having a slide rail device 30 supporting the front and rear movably, and a slide bar device 40 supporting the seat back 2 movably up and down with respect to the vehicle body base on the rear side of the seat back 2; Have.
The vehicle seat S is a seat that can switch the seat body between the normal position shown in FIG. 3A and the reclining position shown in FIG. 3B using the sheet switching device.
Specifically, in the vehicle seat S, by operating the slide rail device 30 from the normal position of FIG. 3A, the seat cushion 1 slides forward in the seat, and the seat back 2 linked to the seat cushion 1 is linked. Is pulled forward. Then, the upper portion of the seatback 2 slides downward while being supported by the slide bar device 40, and the lower portion of the seatback 2 rotationally moves forward with respect to the upper portion. As a result, the vehicle seat S moves to the reclining position of FIG. 3B.

Further, as shown in FIGS. 1 and 2, the vehicle seat S includes a belt assist device 50 attached to an upper portion of the back side portion 2 c of the seat back 2.
The vehicle seat S, as shown in FIG. 9, using the belt assist device 50, at least a portion of the seat belt 4 placed in front of the back side portion 2c of the seat back 2 It is a sheet that can be moved to an easy-to-reach position.
Specifically, in the vehicle seat S, by operating the belt assist device 50, both between the front surface of the seat back 2 and the seat belt 4 and between the upper end of the seat back 2 and the seat belt 4 A portion of the seat belt 4 can be pushed out from the rear so as to create a gap.

Furthermore, as shown in FIG. 1 and FIG. 2, the vehicle seat S supports at least a part of the cushion side portion 1 c of the seat cushion 1 at a normal position where an occupant can sit and A side support device 70 supported so as to be movable between positions, a locking device 80 locking a part of the cushion side portion 1c in the normal position, and an unlocking device 90 unlocking the locking device 80 And.
The vehicle seat S is a seat that can assist the getting-off operation of the seated occupant by operating the side support device 70, and a movable side portion 1ca of the cushion side portion 1c is shown in FIG. As shown in FIG. 17, movement is made between the normal position provided so that the seating surface protrudes from the cushion central portion 1d and the getting-off assist position provided such that the seating surface recedes relative to the cushion central portion 1d. It is a possible sheet.
Therefore, when the cushion side portion 1c is supported by the side support device 70 at the normal position, the holdability of the seated occupant can be improved. Further, when the cushion side portion 1c is supported at the getting-off assisting position, when the occupant opens the door of the vehicle and gets off the vehicle, it is possible to reduce the load for the occupant to get over the cushion side portion 1c.

As shown in FIG. 1 and FIG. 2, the seat cushion 1 is a seating portion for supporting the occupant from below, and the cushioning material 10 is placed on the cushion frame 10 as a skeleton and covered with the skin 1b. It is done.
The seat back 2 is a backrest that supports the back of the occupant from the rear, and is configured by placing the cushioning material 2a on the backframe 20 serving as a framework and covering the cushioning material 2a with the skin material 2b.
The headrest 3 is a head that supports the head of the occupant from the rear, and is configured by mounting a cushion pad 3a on a pillar (not shown) as a core material and covering the cushion pad 3a with a skin material 3b.
The left and right side portions of the seat cushion 1 and the seat back 2 in the seat width direction are respectively formed as a cushion side portion 1c and a back side portion 2c that support the seated occupant from the outside in the seat width direction. .

The cushion side portion 1c includes a movable side portion 1ca supported so as to be switchable by the side support device 70, and a fixed side portion 1cb disposed at a position rearward of the movable side portion 1ca and always fixed at a normal position. , Is composed of.
A side groove 1cc extending along the seat width direction is formed between the movable side portion 1ca and the fixed side portion 1cb, and extends along the seat longitudinal direction between the cushion side portion 1c and the cushion central portion 1d. Side grooves 1 cd are formed.
The back side portion 2 c is provided with a side protrusion 2 ca slightly projecting forward at an outer end in the seat width direction.
The fixed side portion 1cb and the side protruding portion 2ca form a part of a belt movement restricting portion for restricting the movement of the belt portion of the seat belt 4.

The cushion frame 10 is composed of a substantially rectangular frame body serving as a skeleton, and as shown in FIGS. 4 and 5, the left and right side frames 11 disposed in the left and right sides and extending in the seat longitudinal direction, It is mainly comprised from the front frame 12 arrange | positioned ahead rather than the side frame 11, and extending in the left-right direction, and the substantially U-shaped back frame 13 which connects each side frame 11 back part.
In addition, a plate-like support frame 14 connecting the cushion frame 10 and the slide rail device 30 is attached to the bottom of the side frame 11, the front frame 12 and the rear frame 13. A mounting bracket 15 is provided for mounting the cushioning material 1a.
Furthermore, on the left and right outer side surfaces of the mounting bracket 15, links 16 for linking the cushion frame 10 and the back frame 20 are provided.

The support frame 14 is formed of a substantially rectangular plate-like frame and is disposed forward of the front frame 12 and from the left and right end portions of the front support frame portion 14a that supports the seated occupant's thighs and the front support frame portion 14a. It extends rearward and is attached to the upper surfaces of the left and right slide rail devices 30a and 30b, respectively, and extends rearward from the central portion of the front support frame portion 14a to the upper surface of the central slide rail device 30c. And a central support frame portion 14c to be attached.
At the front end portion of the front support frame portion 14a, left and right attachment holes 14aa for attaching the cushioning material 1a are formed at predetermined intervals in the left-right direction, and the left side support frame portion 14b is formed. A side support device 70 is attached.

As shown in FIG. 6, the mounting bracket 15 is provided with an engagement hole 15a for engaging a U-shaped rear engagement protrusion 1aa formed on the rear end portion of the cushion material 1a and extending rearward. ing.
Specifically, the cushioning material 1a is formed forward of the rear engagement protrusion 1aa and the rear engagement protrusion 1aa, extends downward, and engages with the left and right attachment holes 14aa of the front support frame portion 14a. Left and right front engagement projections 1ab are provided for engagement.
According to the above configuration, the cushion material 1a can be attached to the cushion frame 10 by an easy assembling operation.

The link 16 mainly includes an upper link 16a to which the upper end portion is attached so as to sandwich the lower end portion of the back frame 20, and a lower link 16b which connects the lower end portion of the upper link 16a and the mounting bracket 15 There is.
The lower link 16 b is attached at its upper end portion to the upper link 16 a via a link rotation shaft 16 c and is attached at its lower end portion to the mounting bracket 15.

The back frame 20 is a substantially rectangular frame-like body which becomes a framework of the seat back 2 and, as shown in FIG. 4, constitutes an upper half of the back frame 20 and is an upper frame made of a substantially U-shaped pipe member 21 and a lower half of the back frame 20, a lower frame 22 consisting of a substantially inverted U-shaped pipe member, an upper frame 21 and a lower frame 22, and a plate-like center extending in the lateral width direction It is mainly composed of a frame 23.
The upper frame 21 is disposed on the left and right sides, and connects an upper end portion of the left and right side frame portions 21a extending in the vertical direction with the upper end portion of the left and right side frame portions 21a. And a plate-like connecting frame portion 21c for connecting the central portions of the left and right side frame portions 21a in the vertical direction and for attaching the slide bar device 40.
The lower frame 22 mainly includes left and right side frame portions 22a and lower frame portions 22b to which the lower ends of the left and right side frame portions 22a are connected and to which the links 16 are attached.
The central frame 23 is integrally attached to the upper frame 21 in such a manner that the upper part thereof is joined to the upper frame 21 and the lower part is rotatably mounted on the lower frame 22 via a back rotation shaft 24.

A mounting wire 25 for mounting the belt assist device 50 is attached to the outer surface of the left side frame portion 21a of the upper frame 21 so as to protrude outward.
Specifically, a clip member (not shown) integrally provided on the attachment plate 51 of the belt assist device 50 is attached to the attachment wire 25.

<Sheet switching device>
Next, specific configurations of the slide rail device 30 and the slide bar device 40 constituting the sheet switching device will be described based on FIGS. 3A, B to 8A, B.
As shown in FIGS. 2, 3A, B, and 5, the slide rail device 30 supports the seat cushion 1 so as to be movable forward and backward relative to the vehicle floor, and supports the left and right end portions of the seat cushion 1. , And a central slide rail device 30c for supporting the central portion of the seat cushion 1. As shown in FIG.
Specifically, the left slide rail device 30a is attached to the front portion of the cushion frame 10, the right slide rail device 30b is attached from the central portion to the rear portion of the cushion frame 10, and the central slide rail device 30c is the cushion frame Attached to the rear part of the ten.

As shown in FIGS. 3A and 3B, the slide rail device 30 is fixed to the vehicle body floor and includes left and right lower rails 31 extending in the longitudinal direction of the seat, and left and right upper rails 32 slidably supported along the lower rails 31. A lock member (not shown) that locks the upper rail 32 in a non-slidable manner, a lock release member (not shown) that releases the lock state of the lock member, and FIG. 5 for driving the unlocked upper rail 32 in the longitudinal direction The drive motor 33 is mainly composed of:
The slide rail device 30 includes an ECU (electronic control circuit) (not shown) as a control device, a drive circuit for supplying drive power to the drive motor 33, and a vehicle body connected to the drive motor 33 via the drive circuit. It also has a power supply.

The lower rail 31 is formed of a long hollow body, and is disposed on the left and right at intervals in the seat width direction, and a storage space having a substantially convex cross section is formed along the seat longitudinal direction, and along the seat longitudinal direction An opening is formed on the top surface.
The upper rail 32 is an elongated body which slides along the lower rail 31 in a state of being inserted into the housing space of the lower rail 31, and the upper portion thereof is connected to the cushion frame 10 via the support frame 14.

As shown in FIGS. 7 and 8A and 8B, the slide bar device 40 is a device for supporting the seat back 2 so as to be vertically movable with respect to the vehicle body base on the rear side of the seat back 2, and provided on the vehicle body base. Are stored and arranged in the storage recess.
The slide bar device 40 is fixed to the vehicle body base via the mounting bracket 41 and is provided on the left and right slide bars 42 extending in the vertical direction at intervals in the lateral width direction and the rear surface of the upper frame 21 of the back frame 20. The slide cylinder 44 is mainly composed of a slide cylinder 44 fixed via the mounting bracket 43 and supported so as to be vertically movable in a state of being inserted into the slide bar 42.

In the above configuration, in the vehicle seat S, the cushion frame 10 slides forward by moving the upper rail 32 forward with respect to the lower rail 31 using the slide rail device 30 from the normal position of FIG. 8A. The back frame 20 connected by the cushion frame 10 and the link 16 is pulled forward.
Then, in the back frame 20, by moving the slide cylinder 44 downward with respect to the slide bar 42 using the slide bar device 40, the upper frame 21 slides downward, and the lower frame 22 moves to the upper frame 21. It moves to the front of the seat.
As a result, the vehicle seat S moves to the reclining position shown in FIG. 8B.

<Belt Assist Device>
Next, a specific configuration of the belt assist device 50 will be described based on FIG. 9 and FIG.
The belt assist device 50 is an assist device capable of pushing out at least a part of the seat belt 4 forward and upward as shown in FIG.
The belt assist device 50 is attached via an attachment wire 25 provided on the outer surface of the back frame 20 shown in FIG. 4, and an attachment plate 51 elongated in the vertical direction and a storage opening formed at the upper end of the attachment plate 51. A concave storage plate 52 fitted into the portion 51a, a concave support plate 53 attached to the front surface of the storage plate 52, and a movable member 55 attached to the inside of the support plate 53 via the pivot shaft 54; The auxiliary spring 56 mainly urges the movable member 55 toward the projecting position shown in FIG.

The belt assist device 50 rotates the movable member 55 between a storage position for storing the movable member 55 inside the storage plate 52 of the seat back 2 and a protruding position for projecting a part of the seat belt 4 so as to project forward than the seat back 2. It is a device to move.
When the movable member 55 is in the storage position shown in FIG. 1, the belt assist device 50 is integrally stored without substantially protruding from the outer surface of the seat back 2, and the movable member 55 is in the projecting position shown in FIG. It is configured to project partially from the outer surface of the seat back 2 and to push a part of the seat belt 4 forward and upward.

  The movable member 55 includes a protrusion 55 a that protrudes forward at an outer end in the sheet width direction, and the protrusion 55 a is a part of a belt movement restricting portion for restricting the movement of the belt portion of the seat belt 4. Become.

The belt assist device 50 connects a drive motor (not shown) stored on the rear surface of the storage plate 52, the drive motor and the movable member 55, and supports the operation of the drive motor to rotate the movable member 55. And a drive shaft (not shown) that moves up and down.
Further, the belt assist device 50 includes an ECU (not shown) as a control device, a drive circuit for supplying drive power to the drive motor, a vehicle power supply connected with the drive motor and the drive circuit, and an occupant seated. It is desirable to further include a seating sensor (not shown) for detecting that, and a buckle sensor (not shown) for detecting that the tongue plate 4a of the seat belt 4 is connected to the buckle 4b.
Then, the ECU may control the operation of the drive motor, that is, the operation of the movable member 55 based on the signals input from these sensors.
For example, when the ECU receives the on signal from the seating sensor and does not receive the on signal from the buckle sensor, the ECU supplies drive power to the drive motor to move the movable member 55 to the projecting position, and thereby the seat belt You should push 4 out.
Further, for example, when the on signal is received from the seating sensor and the buckle sensor, it is preferable to supply drive power to the drive motor and return the movable member 55 from the projecting position to the storage position.

<Side support device>
Next, a specific configuration of the side support device 70 will be described based on FIGS.
The side support device 70 is a device that supports the cushion side portion 1c so that the cushion side portion 1c can move in response to the passenger's drop-off operation, and as shown in FIG. 12, covers the inside of the cushion side portion 1c and the cushion central portion 1d. It is arranged.
As shown in FIG. 11, the side support device 70 includes a plate-like side plate 71 for supporting the cushion side portion 1c from below, a side bracket 72 having a U-shaped longitudinal section attached to the bottom of the side plate 71, and a side plate A central portion is connected to the side base 74 supporting the side base 74 via the rotation shaft 73 so as to be rotatable between the normal position and the getting-off assist position, and the side base 74 outside the side base 74 And a mounting wire 76 extending in a projecting manner.
The attachment wire 76 is inserted into an attachment hole (not shown) provided inside the cushion material 1a, and is a member for attaching the side support device 70 inside the cushion side portion 1c.

As shown in FIG. 2 and FIG. 11, the side plate 71 is made of a metal plate, and is disposed at the center portion of the cushion side portion 1 c in the seat longitudinal direction.
On the upper surface of the side plate 71, a pair of rectangular through holes 71a penetrating in the vertical direction in the sheet width direction outer part, and a pair of lower end portions in the sheet longitudinal direction bent downward at the outer edge of the through hole 71a Side wall portions 71b of the second embodiment are provided.
The second unlocking lever 94 is disposed at a portion where the through hole 71a is formed, and the second unlocking lever 94 can be rotated by the pair of side wall portions 71b via the pivot shaft 95. Is attached to

As shown in FIG. 11, the side bracket 72 is formed of a U-shaped body elongated in the sheet width direction, and the upper wall portion 72a for attaching the side plate 71 and both end portions of the upper wall portion 72a in the sheet longitudinal direction. And a pair of side wall portions 72b bent and extended downward.
The pair of side wall portions 72b is attached to the side wall portion 74b of the side base 74 formed of a U-shaped body via a rotation shaft 73 extending along the seat longitudinal direction.
Further, as shown in FIG. 11, the lock device 80 and the components of the lock release device 90 are attached to the inner side surface of the rear side wall portion 72b.

The side base 74 mainly includes a bottom wall 74a mounted on the support frame 14 and a pair of side walls 74b bent and extended upward from both end portions of the bottom wall 74a in the seat longitudinal direction. There is.
In addition, a second side base 75 is attached to the inside of the cushion side portion 1 c via an attachment wire (not shown) at a position spaced apart from the side base 74 by a predetermined distance rearward of the seat. The first unlocking lever 91 is attached to the second side base 75 so as to be rotatable via a pivot shaft 92 extending along the seat longitudinal direction.

The locking device 80 is a device for locking the side plate 71 and the side bracket 72 in the normal position, and as shown in FIGS. 11 and 19, the locking device 80 is disposed on the inner side surface of the side wall 72b on the seat rear side in the side bracket 72. ing.
The unlocking device 90 is a device for releasing the locked state of the locking device 80, and includes a first unlocking lever 91 and a second unlocking lever 94, as shown in FIG.
The first lock release lever 91 is a member that rotates around the pivot shaft 92 between the lock position shown in FIG. 11 and the lock release position moved downward below the lock position, and the first transmission cable 93 Is biased to the locked position by
The second lock release lever 94 is a member that rotates around the pivot shaft 95 between the lock position shown in FIG. 11 and the lock release position moved downward from the lock position, and the second transmission cable 96 Is biased to the locked position by

The first lock release lever 91 is formed of a substantially L-shaped plate body, is positioned inward of the side plate 71 in the sheet width direction, and extends in the sheet longitudinal direction, and the side plate 71 And a second extension portion 91b which is located on the seat rear side more than the seat and extends in the seat width direction. And as shown in FIG. 5, it is arrange | positioned avoiding the position which overlaps with the slide rail apparatus 30 up and down. Similarly, the side plate 71 is also disposed avoiding the position where the side plate 71 vertically overlaps with the slide rail device 30.
The second lock release lever 94 is formed of a substantially rectangular plate body and is disposed outside the first lock release lever 91 in the seat width direction, and is disposed forward of the first lock release lever 91 in the seat. ing.

The first unlocking lever 91 and the second unlocking lever 94 are disposed inside the seat cushion 1 as shown in FIG. 2 and further forward than the belt portion of the seat belt 4 (the front end of the belt portion). ing.
The first lock release lever 91 and the second lock release lever 94 are disposed at positions avoiding the belt portion of the seat belt 4 in the sheet width direction. Specifically, the first unlocking lever 91 is disposed inward of the belt portion of the seat belt 4 in the seat width direction, and the second unlocking lever 94 is disposed outward of the belt portion.
Therefore, interference between the lock release levers 91 and 94 and the belt portion of the seat belt 4 can be suppressed.
The details of the lock device 80 and the lock release device 90 will be described later.

<< Operation of the side support device >>
Next, the operation of the side support device 70 will be described based on FIGS. 12 to 18.
First, as shown in FIG. 12A, before the rider gets on the vehicle, as shown in FIG. 12B, the side support device 70 supports the cushion side portion 1c at the normal position.
Further, the lock device 80 locks the cushion side portion 1c at the normal position, and the first lock release lever 91 and the second lock release lever 94 of the lock release device 90 are biased to the lock position. ing.

Then, as shown in FIG. 13A, when the occupant lowers to the cushion side portion 1c to get in, as shown in FIG. 13B, the second unlocking lever 94 locks from the locked position by applying a predetermined seating load. Rotate to the release position.
Here, the lock state of the lock device 80 is not released only by moving only the second lock release lever 94 to the lock release position.

When the occupant lowers to the cushion side portion 1c and the cushion central portion 1d to get on as shown in FIG. 14A, the second unlocking lever 94 is in the unlocking position as shown in FIG. 14B. The first lock release lever 91 is rotationally moved from the lock position to the lock release position when a predetermined seating load is applied.
Here, when the second lock release lever 94 and the first lock release lever 91 are sequentially moved to the lock release position, the lock state of the lock device 80 is not released.

When the occupant is seated as shown in FIG. 15A, as shown in FIG. 15B, the second unlocking lever 94 is released from the predetermined seating load to return from the unlocking position to the locking position, Further, the first lock release lever 91 is in the state of being positioned at the lock release position.
At this time, since the cushion side portion 1c is supported at the normal position by the side support device 70, it is possible to ensure the holding property of the seated occupant.

Then, as shown in FIG. 16A, when the occupant brings the body close to the door side to get off, as shown in FIG. 16B, with the first unlocking lever 91 positioned at the unlocking position, the second unlocking lever The reference numeral 94 rotationally moves from the lock position to the lock release position when a predetermined seating load is applied.
Here, as the first lock release lever 91 and the second lock release lever 94 are sequentially moved to the lock release position, the lock state of the lock device 80 is released.

Then, when the occupant tries to move the body further to the door side as shown in FIG. 17A, as shown in FIG. 17B, the cushion side portion 1c is further loaded with a seating load, so that the cushion side portion 1c is a side plate. Together with 71, it rotationally moves from the normal position to the getting-off assist position.
As a result, it is possible to reduce the load for the passenger who is getting off to get over the cushion side portion 1c.

Finally, as shown in FIG. 18A, when the passenger finishes getting off, as shown in FIG. 18B, the first unlocking lever 91 and the second unlocking lever 94 return to the locking position again, and the locking device 80 is cushion sided. The unit 1c returns to the locked state at the normal position.
By the above-described series of operations, the side support device 70 can assist the passenger's getting-off operation while stably securing the holding property of the seated passenger. In addition, since the cushion side portion 1c is configured not to be intentionally inclined when the passenger performs the riding operation, consideration is made so that the passenger can surely ride.
In the side support device 70, when the belt assist device 50 pushes out a part of the seat belt 4 as shown in FIG. 9, the control device controls the lock release device 90 so that the lock state can not be released. desirable.
Specifically, it is desirable that the control device controls the operation of the side support device 70 so as not to move the movable side portion 1 ca of the cushion side portion 1 c or restricts the amount of movement of the movable side portion 1 ca.

<< locking device, unlocking device >>
Next, specific configurations of the lock device 80 and the lock release device 90 will be described based on FIGS.
As shown in FIG. 19, the lock device 80 uses a lock lever 81 rotatably attached to the inner side surface of the side bracket 72 via a support shaft 82 and a fixing bolt 84 on the inner side surface of the side base 74. The lock lever 83 is mainly composed of a locked lever 83 fixed thereto.
The lock lever 81 and the locked lever 83 are disposed at mutually opposing positions.

The lock device 80 locks the side plate 71 (side bracket 72) in the normal position when the lock lever 81 is in the engagement position shown in FIG. That is, the cushion side portion 1c is locked at the normal position.
The lock device 80 releases the locked state of the side plate 71 (side bracket 72) when the lock lever 81 is in the release position shown in FIG. That is, the lock state of the cushion side portion 1c is released.

The lock lever 81 is a member that rotates between an engagement position shown in FIG. 19 around a support shaft 82 extending along the sheet width direction and a release position moved forward of the seat from the engagement position. It is biased in the direction of arrow A shown in FIG. 19 by a biasing spring (not shown). That is, it is biased from the engagement position side to the release position side.
The lock lever 81 is disposed on the opposite side to the engagement projection 81a in the seat longitudinal direction and an engagement projection 81a engaged with the engagement groove 83a provided on the locked lever 83, and is described by a relay lever 120 described later. A held portion 81b to be held and a through projection 81c that protrudes inward in the sheet width direction and is disposed movably inside a through hole 110b provided in a first transmission lever 100 described later are formed, respectively. There is.
The lock lever 81 is normally held by the relay lever 120, and is disposed at an engagement position where the engagement protrusion 81a is engaged with the engagement groove 83a.

As shown in FIG. 19, the unlocking device 90 has a first transmission lever 100 rotatably attached to the inner side surface of the side bracket 72 via the first connecting shaft 101, and a second connection to the inner side surface of the side bracket 72. A second transmission lever 110 rotatably mounted via the shaft 111, and a relay lever 120 mounted between the side bracket 72 and the first transmission lever 100 and rotatable via the first connecting shaft 101; It is equipped further.
When the first transmission lever 100 and the second transmission lever 110 move from the reference position shown in FIG. 19 to the transmission position shown in FIG. 23, the unlocking device 90 moves the lock lever 81 to FIG. It can be moved from the shown engaged position to the disengaged position shown in FIG.

The first transmission lever 100 has a reference position shown in FIG. 19 centered on the first connecting shaft 101 extending along the sheet width direction, an intermediate position shown in FIG. 22 moved downward from the reference position, and an intermediate position It is a member which rotates between the transmission position shown in FIG. 23 which has been further moved downward.
The first transmission lever 100 is biased in the direction of arrow B shown in FIG. 19 by a biasing spring (not shown). That is, the transmission position side is biased to the reference position side.
In the first transmission lever 100, a mounting hole 110a for mounting the cable attachment end 93a of the first transmission cable 93 and a side opposite to the mounting hole 110a with respect to the first connecting shaft 101 are disposed. A through hole 110 b for passing through the through protrusion 81 c and a fitting hole for fitting the fitting protrusion 120 a provided on the relay lever 120 are respectively formed.

The first transmission lever 100 is normally biased in the direction of arrow B by a biasing spring (not shown) and disposed at the reference position. At this time, the outer edge portion of the through hole 110 b and the through projection 81 c of the lock lever 81 are disposed at positions where they do not abut each other.
Then, the first transmission lever 100 is rotationally moved from the reference position to the intermediate position by being pulled by the first transmission cable 93 along with the rotation operation of the first lock release lever 91. At this time, the outer edge portion of the through hole 110b abuts on the through projection 81c, whereby the first transmission lever 100 is stably stopped at the intermediate position. That is, the through projection 81c serves as a stopper.
Then, the first transmission lever 100 further moves from the intermediate position to the transmission position via the relay lever 120 as the second transmission lever 110 rotates. At this time, the outer edge portion of the mounting hole 110a abuts on the cable mounting end 93a, whereby the first transmission lever 100 is stably stopped at the transmission position. That is, the cable attachment end 93a serves as a stopper.

The second transmission lever 110 rotates between the reference position shown in FIG. 19 and the transmission position shown in FIG. 23 moved upward from the reference position, with the second connecting shaft 111 extending along the sheet width direction as a center. It is a member.
The second transmission lever 110 is biased in the direction of arrow C shown in FIG. 19 by a biasing spring (not shown). That is, the transmission position side is biased to the reference position side.
The second transmission lever 110 is rotatably mounted via a connection pin 113 extending along the seat longitudinal direction, and a pressing lever 112 for pressing the relay lever 120 is provided.
Further, the second transmission lever 110 is provided with a mounting hole 110a for mounting the cable attachment end 96a of the second transmission cable 96, and a side opposite to the mounting hole 110a with respect to the second connecting shaft 111. A through hole 110 b for causing the through protrusion 112 a of 112 to pass through is formed.

The second transmission lever 110 is normally biased in the direction of arrow C by a biasing spring (not shown) and disposed at the reference position. The pressing lever 112 is also biased in the direction of the arrow D by a biasing spring (not shown) and disposed at the reference position shown in FIG.
At this time, the through projection 112 a of the pressing lever 112 and the outer edge portion of the through hole 110 b are disposed at positions where they abut on each other.
The second transmission lever 110 is rotationally moved from the reference position to the transmission position by being pulled by the second transmission cable 96 as the second unlocking lever 94 rotates. Further, the pressing lever 112 is also rotationally moved from the reference position to the pressing position shown in FIG.
At this time, when the pressing portion 112 b of the pressing lever 112 pushes and moves the pressing receiving portion 120 b provided on the relay lever 120, the relay lever 120 rotates and moves together with the first unlocking lever 91.

The relay lever 120 moves from the holding position shown in FIG. 19 centered on the first connecting shaft 101, the intermediate position shown in FIG. 22 moved upward from the held position, and FIG. 23 moved further upward from the intermediate position. It is a member that rotates between the release position.
The relay lever 120 is connected to the first transmission lever 100 via the first connection shaft 101 and the fitting protrusion 120 a, and is biased in the same arrow B direction as the biasing direction of the first transmission lever 100. That is, it is biased from the disengaging position side to the holding position side.
The relay lever 120 has a fitting protrusion 120 a, a pressure receiving portion 120 b disposed on the opposite side of the first connection shaft 101 from the fitting protrusion 120 a, and a fitting protrusion 120 a with respect to the first connection shaft 101. And a holding portion 120c, which is disposed on the same side as the first holding portion and holds the held portion 81b of the lock lever 81, respectively.

The relay lever 120 is normally biased in the direction of arrow B and disposed at the holding position. Here, the holding position is a position where the holding portion 120 c holds the lock lever 81 at the engagement position.
Then, the relay lever 120 is rotationally moved from the holding position to the intermediate position as the first transmission lever 100 rotates. At this time, the holding portion 120 c maintains the state where the lock lever 81 is held at the engagement position.
Then, the relay lever 120 is rotationally moved from the intermediate position to the disengagement position with the rotation operation of the second transmission lever 110 (the pressing lever 112). Here, the release position is a position at which the holding portion 120 c is released from the state in which the lock lever 81 is held at the engagement position.
As a result, the lock lever 81 is biased in the arrow A direction to move from the engagement position to the release position. That is, the lock state of the lock device 80 is released.

<< Operation of Lock Device, Unlock Device >>
Next, specific operations of the lock device 80 and the lock release device 90 will be described based on FIGS. 12 to 18 and 19 to 25.
First, as shown in FIG. 12A, before the rider gets on the vehicle, the lock lever 81 is disposed at the engagement position where the lock lever 81 is engaged as shown in FIG.
The first transmission lever 100 and the second transmission lever 110 (the pressing lever 112) are disposed at the reference position, and the relay lever 120 is disposed at the holding position.
That is, as shown in FIG. 12B, the lock device 80 locks the cushion side portion 1c at the normal position.

Then, when the occupant lowers to the cushion side portion 1c to get on as shown in FIG. 13A, the second transmission lever 110 (the pressing lever 112) is moved by the second unlocking lever 94 as shown in FIG. It is pulled and rotationally moved from the reference position to the transmission position.
At this time, the pressing lever 112 makes no swing without pushing the relay lever 120.
As a result, the lock state of the lock device 80 is not released while the lock lever 81 is disposed at the engagement position.

When the occupant lowers to the cushion side portion 1c and the cushion central portion 1d to get on as shown in FIG. 14A, the second transmission lever 110 (pressing lever 112) is positioned at the transmission position as shown in FIG. In this state, the first transmission lever 100 is pulled by the first unlocking lever 91 and rotationally moved from the reference position to the intermediate position.
In addition, the relay lever 120 rotates with the first transmission lever 100 to move from the holding position to the intermediate position.
At this time, the pressing lever 112 and the relay lever 120 are idled relative to each other.
As a result, the lock state of the lock device 80 is not released while the lock lever 81 is disposed at the engagement position.

When the occupant is seated as shown in FIG. 15A, the second transmission lever 110 (the pressing lever 112) is released from the pulling operation of the second unlocking lever 94 as shown in FIG. Then, the transmission position is returned to the reference position again.
At this time, the pressing lever 112 rotates around the connection pin 113 with respect to the second transmission lever 110, and idles so as to get over the relay lever 120 and returns to the reference position.
As a result, the lock state of the lock device 80 is not released while the lock lever 81 is disposed at the engagement position.

Then, as shown in FIG. 16A, when the occupant brings the body close to the door side to dismount, as shown in FIG. 23, with the first transmission lever 100 positioned at the intermediate position, the second transmission lever 110 (press The lever 112) is pulled by the second unlocking lever 94 to rotationally move from the reference position to the transmission position.
Further, the relay lever 120 is rotationally moved from the intermediate position to the separated position by being pushed and moved by the pressing lever 112.
As a result, the lock lever 81 disengages from the state held by the relay lever 120 at the engaged position, and rotationally moves from the engaged position to the disengaged position. That is, the lock state of the lock device 80 is released.

Then, as shown in FIG. 17A, when the occupant tries to move the body further to the door side and get off, as shown in FIG. 24, the side plate 71 (side bracket 72) is a side base by the occupant's seating load being applied. 74 rotationally moves from the normal position to the get-off assisting position.
As a result, as shown in FIG. 17A, the cushion side portion 1c rotationally moves from the normal position to the get-off assisting position.

Finally, as shown in FIG. 18A, when the passenger gets off, as shown in FIG. 25, the first transmission lever 100 and the second transmission lever 110 (press lever 112) return to the reference position again, and the relay lever 120 is held. Return to position.
In addition, the lock lever 81 returns to the engagement position where it is engaged with the lock lever 83 again.
By the above series of operations, switching between the locked state and the unlocked state by the locking device 80 and the unlocking device 90 is performed.

<< Positional relationship between cushion side part and side support device >>
In the above embodiment, as shown in FIG. 2, the side groove 1 cd between the cushion side portion 1 c and the cushion central portion 1 d is a position (a inside of the belt line) avoiding the belt portion of the seat belt 4 in the seat width direction. Position).
Therefore, even when the position of the movable side portion 1ca is switched by the operation of the side support device 70, the belt portion can be prevented from entering the side groove 1cd, and the influence on the seat belt can be suppressed.

In the above embodiment, as shown in FIG. 2, the side groove 1 cc between the movable side portion 1 ca and the fixed side portion 1 cb is inclined such that the inner end in the sheet width direction is forward of the outer end. It is arranged.
Therefore, interference with the belt portion can be suppressed at the inner end near the belt portion of the seat belt 4 among the side grooves 1cc, and the area of the movable side portion 1ca is secured at the outer end distant from the belt portion. The functionality of the passenger's getting-off support can be secured.

In the above embodiment, as shown in FIG. 2, the rear end of the side plate 71 of the side support device 70 and the rear end of the movable side portion 1 ca of the cushion side portion 1 c extend substantially in parallel. It is possible to support the getting off of the crew.

In the above embodiment, as shown in FIG. 2, a part of the first unlocking lever 91 is disposed by utilizing the internal space or the lower space of the fixed side portion 1cb of the cushion side portion 1c.
Therefore, the compact arrangement of the side support device 70 can be realized.

<Other Embodiments>
In the above embodiment, the cushion side portion 1c is movable between the normal position shown in FIG. 12 and the get-off assisting position in which the cushion material 1a retreats downward as shown in FIG. The auxiliary position can be changed without particular limitation.
For example, the cushion material 1a may be retracted so as to be stored behind the seat, or the cushion material 1a may be partially retracted downward.
Alternatively, for example, at least a part of the cushion side portion 1c may slide so as to protrude outward in the seat width direction. Even when projecting in this manner, it is possible to assist the passenger's getting-off operation.

  In the above embodiment, the cushion side portion 1c is configured to move from the normal position to the get-off assisting position according to the seating load of the occupant after the lock state of the lock device is released, but is particularly limited. Instead, it may be configured to move automatically from the normal position to the get-off assist position.

In the above embodiment, the side support device 70 is configured as a device capable of assisting the occupant's getting off operation, but is not particularly limited, and can assist the passenger's getting on and off operation. It may be configured as an apparatus.
In that case, it is more desirable to reduce the amount of movement of the cushion side portion 1c by the side support device 70 during the getting-in operation of the occupant than in the getting-off operation.
Further, it may be configured as a device capable of assisting only the passenger's boarding operation.

In the above embodiment, the side support device 70 (the unlocking device 90) is disposed in the cushion side portion 1c of the seat body, but is not particularly limited, and is disposed in the side portion in the seat width direction in the seat body. It should be good.
The side portion includes, for example, a portion on the side of the cushion central portion 1 d in addition to the cushion side portion 1 c.

  In the above embodiment, the lock release device 90 includes two lock release members, the first lock release lever 91 and the second lock release lever 94, but the present invention is not particularly limited. You may only have it.

In the above embodiment, when the lock release device 90 is moved to the lock release position in the order of the first lock release lever 91 and the second lock release lever 94, the lock state is released, but it is particularly limited. It can be changed without.
For example, the lock release may be performed when the first lock release lever 91 and the second lock release lever 94 simultaneously move to the lock release position, or the order of the second lock release lever 94 and the first lock release lever 91 may be used. It may be unlocked when moving to the unlocking position.

In the above embodiment, as shown in FIG. 1, the first unlocking lever 91 is disposed at the cushion central portion 1d, and the second unlocking lever 94 is disposed at the cushion side portion 1c. The back 2 and the headrest are disposed on the left and right outside of the left and right center positions, and are disposed on the left and right outside of the seating center position when the occupant is seated.
For example, the first lock release lever 91 may be disposed at a predetermined position of the seat cushion 1 or the seat back 2, and the second lock release lever 94 may be disposed at a predetermined position of the vehicle door.
Further, for example, the first lock release lever 91 is attached to a seat belt device (not shown) and provided to operate in response to the removal of the seat belt, and the second lock release lever 94 is a predetermined position for a vehicle door And may be provided to operate in response to the opening and closing operation of the door.

In the above embodiment, as shown in FIG. 2, the fixed side portion 1 cb is provided between the movable side portion 1 ca of the cushion side portion 1 c and the belt portion of the seat belt 4 so as not to contact with each other. It is changeable without being done.
For example, a vacant space may be provided instead of the fixed side portion 1cb, and the fixed side portion does not necessarily have to be provided, and a side portion having a smaller moving amount than the movable side portion 1ca may be provided instead. good.

In the above embodiment, as shown in FIG. 2, the fixed side portion 1cb is provided between the movable side portion 1ca of the cushion side portion 1c and the belt portion of the seat belt 4 so as not to always contact with each other. It can be changed without limitation.
For example, the fixed side portion 1cb is eliminated, and in the normal position, the movable side portion 1ca and the belt portion are disposed in a contactable arrangement, and when moving to the getting-off assisting position, the movable side portion 1ca is once separated from the belt portion After moving to the position, it may be devised to move to the getting-off assist position thereafter.

In the above embodiment, as shown in FIG. 1, the lower end portion (fixing portion) of the belt portion of the seat belt 4 is provided at the boundary portion between the cushion side portion 1c and the back side portion 2c or its peripheral portion But can be changed without being particularly limited.
For example, the lower end portion (fixing portion) of the belt portion may be attached so as to enter a through hole formed at a predetermined position of the back side portion 2c. That is, the anchor point of the belt portion may be provided at a predetermined position (for example, the center portion or the lower portion in the vertical direction) of the back side portion 2c.

  In the above embodiment, as shown in FIG. 11, the side support device 70 is a manual type, but is not particularly limited, and may be a stepless electric type.

  In the above embodiment, a storable vehicle seat used for a car has been described as a specific example, but the present invention is not limited to this, and a seat for a vehicle such as an airplane or a ship besides a seat for a vehicle such as a train or bus It can also be used as

In the present embodiment, the vehicle seat S 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 gist thereof, and the present invention naturally includes the equivalents thereof.

S Vehicle seat 1 Seat cushion 1a, 2a, 3a Cushion material 1aa Rear engagement protrusion 1ab Forward engagement protrusion 1b, 2b, 3b Skin material 1c Cushion side portion 1ca Movable side portion 1cb Fixed side portion (belt movement regulation portion)
1 cc, 1 cd Side groove 1 d Cushion central part 2 Seat back 2 c Back side part 2 ca Side protruding part (belt movement regulation part)
Reference Signs List 3 headrest 4 seat belt 10 cushion frame 11 side frame 12 front frame 13 rear frame 14 support frame 14a front support frame portion 14aa attachment hole 14b side support frame portion 14c central support frame portion 15 attachment bracket 15a attachment hole 16 link 16a upper link 16b Lower link 16c Link rotary shaft 20 Back frame 21 Upper frame 21a Side frame portion 21b Upper frame portion 21c Connecting frame portion 22 Lower frame 22a Side frame portion 22b Lower frame portion 23 Central frame 24 Back rotary shaft 25 Attachment wires 30, 30a, 30b , 30c Slide rail device 31 Lower rail 32 Upper rail 33 Drive motor 40 Slide bar device 41 Mounting block Socket 42 slide bar 43 mounting bracket 44 slide cylinder 50 belt-assisting device 51 mounting plate 51a housing opening 52 holding plate 53 supporting plate 54 pivot shaft 55 movable member 55a projecting portions (belt movement restricting portion)
56 Auxiliary spring 70 Side support device 71 Side plate 71a Through hole 71b Side wall 72 Side bracket 72a Top wall 72b Side wall 73 Rotation shaft 74 Side base 74a Bottom wall 74b Side wall 75 Second side base 76 Attachment wire 80 Locking device 81 Lock lever 81a Engaging projection 81b Holding part 81c Through projection 82 Support shaft 83 Locked lever 83a Engaging groove 84 Fixing bolt 90 Lock release device 91 1st lock release lever (1st lock release member)
91a first extending portion 91b second extending portion 92, 95 pivot shaft 93 first transmission cable 93a, 96a cable attachment end 94 second unlocking lever (second unlocking member)
96 second transmission cable 100 first transmission lever 100a mounting hole 100b through hole 101 first connecting shaft 110 second transmission lever 110a mounting hole 110b through hole 111 second connecting shaft 112 pressing lever 112a through projection 112b pressing portion 113 connecting pin 120 Relay lever 120a Fitting projection 120b Press receiving part 120c Holding part

Claims (9)

A seat cushion and a seat back for a passenger to seat;
At least a part of the side portion in the seat width direction of the seat cushion can be switched between a normal position where the occupant can sit and an auxiliary position for assisting the passenger's getting-in or getting-off operation And a side support device for supporting the vehicle seat,
The side support device is disposed at a position forward of a portion of the seat belt placed in front of the side portion in the seat width direction of the seat back.
At least one of the seat cushion and the seat back is provided with a belt movement restricting portion for restricting movement of a part of the seat belt when the position of the side portion is switched by the side support device .
The belt movement restricting portion is provided on the seat cushion, and restricts at least a portion of the side portion and a portion of the seat belt not to contact when the position of the side portion is switched. A vehicle seat characterized in that. A seat cushion and a seat back for a passenger to seat;
At least a part of the side portion in the seat width direction of the seat cushion can be switched between a normal position where the occupant can sit and an auxiliary position for assisting the passenger's getting-in or getting-off operation And a side support device for supporting the vehicle seat,
The side support device is disposed at a position forward of a portion of the seat belt placed in front of the side portion in the seat width direction of the seat back.
At least one of the seat cushion and the seat back is provided with a belt movement restricting portion for restricting movement of a part of the seat belt when the position of the side portion is switched by the side support device.
The vehicle seat according to claim 1, wherein the belt movement restricting portion is provided on the seat cushion, and restricts at least a portion of the side portion and a portion of the seat belt so as not to always contact with each other. A seat cushion and a seat back for a passenger to seat;
At least a part of the side portion in the seat width direction of the seat cushion can be switched between a normal position where the occupant can sit and an auxiliary position for assisting the passenger's getting-in or getting-off operation And a side support device for supporting the vehicle seat,
The side support device is disposed at a position forward of a portion of the seat belt placed in front of the side portion in the seat width direction of the seat back.
At least one of the seat cushion and the seat back is provided with a belt movement restricting portion for restricting movement of a part of the seat belt when the position of the side portion is switched by the side support device.
The side portion includes a first side portion supported so as to be switchable by the side support device, and a second side portion provided between the first side portion and a portion of the seat belt,
A seat for a vehicle, wherein the second side portion constitutes at least a part of the belt movement restricting portion. The first side portion is a movable side portion movable between the normal position and the auxiliary position,
The vehicle seat according to claim 3, wherein the second side portion is a fixed side portion fixed at the normal position. A seat cushion and a seat back for a passenger to seat;
At least a part of the side portion in the seat width direction of the seat cushion can be switched between a normal position where the occupant can sit and an auxiliary position for assisting the passenger's getting-in or getting-off operation And a side support device for supporting the vehicle seat,
The side support device is disposed at a position forward of a portion of the seat belt placed in front of the side portion in the seat width direction of the seat back.
At least one of the seat cushion and the seat back is provided with a belt movement restricting portion for restricting movement of a part of the seat belt when the position of the side portion is switched by the side support device.
A belt assist device capable of moving at least a portion of the seat belt to a position easily accessible from the seated occupant;
The belt movement restricting portion is provided on the seat cushion, and at least a portion of the side portion and a portion of the seat belt moved to the easily reachable position when the belt assist device is in operation. A seat for a vehicle characterized in that it is regulated so as not to contact with. A seat cushion and a seat back for a passenger to seat;
At least a part of the side portion in the seat width direction of the seat cushion can be switched between a normal position where the occupant can sit and an auxiliary position for assisting the passenger's getting-in or getting-off operation And a side support device for supporting the vehicle seat,
The side support device is disposed at a position forward of a portion of the seat belt placed in front of the side portion in the seat width direction of the seat back.
At least one of the seat cushion and the seat back is provided with a belt movement restricting portion for restricting movement of a part of the seat belt when the position of the side portion is switched by the side support device.
A belt assist device capable of moving at least a portion of the seat belt to a position easily accessible from the seated occupant;
A control device that controls the operation of the belt assist device and the side support device;
The control device controls the operation of the side support device so that at least a portion of the side portion is not moved when the belt assist device is in operation, or the movement amount of at least a portion of the side portion A seat for a vehicle characterized by being restricted. A seat cushion and a seat back for a passenger to seat;
At least a part of the side portion in the seat width direction of the seat cushion can be switched between a normal position where the occupant can sit and an auxiliary position for assisting the passenger's getting-in or getting-off operation And a side support device for supporting the vehicle seat,
The side support device is disposed at a position forward of a portion of the seat belt placed in front of the side portion in the seat width direction of the seat back.
At least one of the seat cushion and the seat back is provided with a belt movement restricting portion for restricting movement of a part of the seat belt when the position of the side portion is switched by the side support device.
The side support device includes a side plate that moves between the normal position and the auxiliary position while supporting at least a part of the side portion, a lock device that locks the side plate in the normal position, and And an unlocking device for releasing the lock state,
The lock release device has a lock release member disposed on a side portion in the seat width direction of the seat cushion, and operating to release the lock state.
The lock release member moves from a lock position for maintaining the lock state to a lock release position for releasing the lock state by applying a predetermined load to the seating surface of the side portion. A vehicle seat characterized by having. The lock release member is a first lock release member, and
The unlocking device further comprises a second unlocking member operable to release the locked state,
The first unlocking member is disposed at a central portion of the seat cushion.
The vehicle seat according to claim 7, wherein the second lock release member is disposed on the side portion of the seat cushion. The unlocking device is
With the first unlocking member in the unlocking position,
The vehicle seat according to claim 8, wherein the locked state is released when the second unlocking member is moved from the locking position to the unlocking position.

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