JP6708941B2 - Vehicle seat - Google Patents

Description

The present invention relates to a vehicle seat, and more particularly to a vehicle seat that can store a seat back and a seat cushion at a position lower than a vehicle body floor.

BACKGROUND ART Conventionally, there is already known a vehicle seat in which a seat back and a seat cushion that form a seat body can be stored at a position lower than a vehicle body floor, and among them, a seat body is tilted forward and provided in front of the seat. There is a vehicle rear seat that can be stored on a storage floor (for example, see Patent Document 1).

The vehicle seat described in Patent Document 1 is attached to a vehicle body floor and has a mounting shaft that rotatably supports a seat back, an upper end that supports a front portion of a seat cushion, and a lower end that is fixed to a storage floor. And a storage structure that includes a leg member that is rotatably held in the.
During the storage operation of the seat body, the seat back rotates with respect to the vehicle body floor so as to move the seat cushion to the storage floor, and the leg members rotate in conjunction with the seat back around the holding groove, so that the seat body is rotated. It can be stored on the storage floor.
Further, the vehicle seat is configured to be switchable from a use state in which an occupant can sit down to a tip-up state in which a leg member is detached from a holding groove and a seat cushion is flipped up.

JP, 2009-67309, A

By the way, in a seat capable of accommodating a seat body as in Patent Document 1, a complicated structure is provided by including a reclining mechanism for connecting a seat back in a foldable manner, a storage mechanism for accommodating on a storage floor, and the like. Has become. Therefore, it is necessary to devise the arrangement of the components to secure the rigidity of the entire seat.
On the other hand, when installing the seat in the vehicle, the seat back should be placed on one side in the seat width direction when the seat cushion is used as the reference position in order to create an arrangement layout that takes into consideration the shape of the vehicle and the installation space for interior parts. It may be required to devise such as staggering.
Therefore, it has been desired to design the seat as described above in consideration of the layout in the vehicle while ensuring the rigidity of the entire seat.

Further, in the seat as disclosed in Patent Document 1, the leg member that supports the seat cushion is a long member because it is connected between the seat cushion and the storage floor.
Then, when the leg member is detached from the holding groove by the switching operation between the use state and the tip-up state, the length of the leg member is long, so that the swinging width of the detached leg member in the front-rear direction becomes large, and It was difficult to reattach the member to the holding groove.
Therefore, there has been a demand for a vehicle seat that can be easily switched from the use state.

In addition, in the seat as in Patent Document 1, not only the floor surface of the vehicle body on which the seat body is installed but also the storage floor surface are attached with components of the storage structure, which is a complicated structure for housing the seat body. Was there.
Therefore, a vehicle seat that has a simple structure and can be stored on the storage floor has been desired.

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 that secures the rigidity of the entire seat.
Another object of the present invention is to provide a vehicle seat that secures the rigidity of the entire seat and considers the layout in the vehicle.
Another object of the present invention is to provide a vehicle seat that can be easily switched from the use state.
Another object of the present invention is to provide a vehicle seat that can be stored on a storage floor with a simple structure.

According to the vehicle seat of the present invention, the above-mentioned problem is provided with a seat main body having a seat back serving as a backrest portion and a seat cushion serving as a seating portion, which is connected to the seat back, and can be used by an occupant. A vehicle seat that can be switched between a state and a moving state in which the seat body is moved from the use state, the left and right lower rails fixed to the vehicle body floor and extending in the seat front-rear direction, and the lower rails. A rail device having left and right upper rails slidably supported along the rail device and a support base attached to the left and right upper rails and supporting the seat body are provided. It is arranged at the same height position as the left and right lower rails in the direction, and the lower end of the support base is arranged above the vehicle body floor .

The above vehicle seat includes a support base that is attached to the left and right upper rails and supports the seat body, and a part of the support base is arranged at the same height position as the left and right lower rails in the vertical direction. Therefore, it is possible to realize a vehicle seat that secures the rigidity of the seat .

Further, according to the vehicle seat of the present invention, the above-mentioned problem is provided with a seat main body having a seat back serving as a backrest portion and a seat cushion serving as a seating portion that is connected to the seat back and is capable of being seated by an occupant. A vehicle seat capable of switching between a use state and a movement state in which the seat body is moved from the use state, the left and right lower rails fixed to a vehicle body floor and extending in the seat front-rear direction, and the lower rails. A left and right upper rails slidably supported along the rail device, and a support base attached to the left and right upper rails and supporting the seat body, and a part of the support base, The support base is arranged at the same height position as the left and right lower rails in the vertical direction, and the support base connects the left and right side base parts respectively mounted on the left and right upper rails and the front part of the left and right side base parts. A first base connecting portion and a reinforcing base portion attached above the left and right side base portions, and the first base connecting portion and the reinforcing base portion are arranged at positions overlapping in the vertical direction. It is also solved by being.
With the above configuration, the rigidity of the seat can be improved.

At this time, the support base connects the second base connecting portion connecting the substantially central portions of the left and right side base portions to the first base connecting portion and the second base connecting portion, and extends in the seat front-rear direction. It is good to have the support part which has .
With the above configuration, the rigidity of the seat can be improved.

At this time, it is preferable that, of the reinforcing base portion, the attachment portion attached to the side base portion is disposed between the first base connecting portion and the second base connecting portion in the seat front-rear direction .
With the above configuration, the rigidity of the seat can be improved.

At this time, a base cover that covers the support base from above is provided, and a recessed portion that is recessed downward is formed at a substantially central portion in the seat width direction on the upper surface of the front portion of the base cover. It is preferable that the 1-base connecting portion is arranged in front of the seat with respect to the recess .
With the above configuration, the rigidity of the seat can be improved.

At this time, a cushion frame serving as a skeleton of the seat cushion is provided, and the cushion frame includes left and right side frames arranged laterally of the seat and a front connecting member that connects front portions of the left and right side frames. It is preferable that the first base connecting portion is disposed rearward of the seat with respect to the front connecting member in the use state .
With the above configuration, the seat can be made compact in the front-back direction.

At this time, the cushion frame includes a central connecting member that connects substantially central portions in the front-rear direction of the left and right side frames, and a pan frame as a plate-shaped frame that connects the front connecting member and the central connecting member. Further, it is preferable that the first base connecting portion is disposed in the front of the seat with respect to the portion of the pan frame to which the central connecting member is attached in the use state .
With the above configuration, the support rigidity of the seat body by the support base can be improved.

At this time, in the use state, the first base connecting portion may be arranged between the front connecting member and the central connecting member in the seat front-rear direction .
With the above configuration, the seat can be made compact in the front-rear direction.

At this time, a buckle for mounting a tongue plate provided on a seat belt for restraining a seated occupant may be provided, and the first base connecting portion may be arranged inside the buckle in the seat width direction. ..
With the above configuration, it is possible to reduce the size in the seat width direction.

At this time, the buckle is arranged on one side in the seat width direction of the vehicle seat and on the other side of the vehicle seat in the seat width direction, and the seat cushion is rotatable with respect to the seat back. It is preferable that the first base connecting portion is disposed closer to the buckle side than the cushion rotating device in the seat width direction .
With the above structure, the buckle, the cushion rotating device, and the first base connecting portion can be arranged in a well-balanced manner in the seat width direction.

According to the present invention, a vehicle seat that secures the rigidity of the entire seat can be realized.
Further, according to the present invention, it is possible to realize a vehicle seat that secures the rigidity of the entire seat and considers the layout in the vehicle.
Further, according to the present invention, it is possible to realize a vehicle seat that can be easily switched from the use state.
Further, according to the present invention, it is possible to realize a vehicle seat that can be stored on the storage floor with a simple structure.
Further, according to the present invention, it is possible to make the seat longitudinally compact.
Further, according to the present invention, the support rigidity of the seat body by the support base can be improved.
Further, according to the present invention, it is possible to make the seat longitudinally compact .
Further, according to the present invention, it is possible to reduce the size in the seat width direction.
Further, according to the present invention, the buckle, the cushion rotating device, and the first base connecting portion can be arranged in a well-balanced manner in the seat width direction .

It is a perspective view of the vehicle seat concerning this embodiment. It is a perspective view of the vehicle seat seen from another angle. It is a perspective view of the seat frame used as the frame of a vehicle seat. It is a front view of a seat frame. It is a perspective view of a support base of a vehicle seat. It is a perspective view of the base cover which protects a support base. It is a side view of a vehicle seat, and is a figure explaining operation which moves from a use state to a storage state. It is a side view of a vehicle seat, and is a figure explaining operation which moves to a stowed state. It is a side view of a vehicle seat, and is a figure explaining operation which moves from a stowed state to a tip-up state. It is a side view of a vehicle seat, and is a figure explaining operation which returns to a use state from a tip-up state.

Hereinafter, a vehicle seat according to an embodiment of the present invention will be described with reference to FIGS. 1 to 10.
The present embodiment is a vehicle seat in which a seat body can be stored on a storage floor, and a seat rotation shaft connected so that the seat body is rotatable, an upper end is attached to the seat body, and a lower end is Detachable legs removably held by leg holding members on the support base, and left and right floor connecting members for connecting the seat on the floor of the vehicle body, the seat back and the floor connecting members in the seat width direction. The present invention relates to an invention of a vehicle seat, in which the center positions are both displaced to one side in the seat width direction with respect to the center position of the seat cushion.
The side on which the occupant sits with respect to the seat back of the vehicle seat is the front side of the seat.

The vehicle seat S of the present embodiment is, for example, a rear seat corresponding to a rear seat of the vehicle. It can also be used as a second-row middle seat in a vehicle having three rows of seats in the vehicle front-rear direction.
As shown in FIGS. 1 and 2, the vehicle seat S is attached to a seat body including a seat back 1, a seat cushion 2, and a headrest 3 and a vehicle body floor via a floor connecting member 6, The left and right rail devices 7 of FIG. 3 that support the main body so as to be movable back and forth, the detachable legs 30 that support the seat body from below, and the support base 40 that is installed on the rail device 7 and supports the detachable legs 30 from below. A leg holding member 50 that is mounted on the support base 40 and detachably holds the lower ends of the detachable legs 30 and a base cover 60 that covers the support base 40 from above are mainly configured.
As shown in FIG. 2, the vehicle seat S includes a reclining device 13 that rotatably connects the seat back 1 to a support base 40 about a seat rotation shaft 12 and a seat back 1. A cushion rotation device 25 that rotatably connects the seat cushion 2 and a leg rotation device 28 that rotatably connects the detachable leg 30 to the seat cushion 2.
On the seat front side of the vehicle seat S, as shown in FIG. 7, a concave storage floor formed at a position lower than the vehicle body floor is provided.

The vehicle seat S can be arranged in three different forms: a use state in which an occupant can sit, a stored state in which the seat body is stored on the storage floor, and a tip-up state in which the seat body is flipped up. It is a sheet.
Specifically, when the occupant pulls the operation lever 1c of FIG. 1 from the use state shown in FIG. 7A, the vehicle seat S is folded forward by folding the seat body and stored on the storage floor. The storage state is switched to that shown in FIG. Further, the occupant manually raises the seat main body from the stored state to the tip-up state shown in FIG. 9B. Furthermore, when the occupant pulls the detachable leg 30 that functions as an operating portion from the tip-up state, the seat cushion 2 rotates below the seat with respect to the seat back 1, and the use state shown in FIG. 10B is restored. Details will be described later.

As shown in FIG. 1, the seat back 1 is a backrest portion that supports the back of an occupant from the rear, and the cushion pad 1a is placed on the back frame 10 of FIG. 2, which is a skeleton, and is covered with the outer skin 1b. Is configured. An operation lever 1c is arranged on the upper surface of the seat back 1 on the right side in the seat width direction.
An armrest 4 for supporting the arm portion of a seated occupant is attached to the left side of the seatback 1 in the seat width direction.

As shown in FIG. 1, the seat cushion 2 is a seating portion that supports an occupant from below, and the cushion pad 2a is placed on the cushion frame 20 of FIG. It is configured by being covered with the skin 2b.
A buckle 5 for mounting a tongue plate provided on a seat belt (not shown) is attached to the left side of the seat cushion 2.
The headrest 3 is a head that supports the occupant's head from the rear, and is configured by placing a cushion pad 3a on a pillar (not shown) that serves as a core material and covering it with a skin 3b.

As shown in FIGS. 2 and 3, the floor connecting member 6 is arranged at the left and right lateral positions of the seat, and mainly includes a front floor connecting member 6a and a rear floor connecting member 6b.
The front floor connecting member 6a is formed of a curved plate body, and as shown in FIG. 3, one end is overlapped with the front portion of the left and right lower rails 7 and bolted, and the other end extends toward the front of the seat to extend above the vehicle body floor. It is bolted to.
The right front floor connecting member 6a extends toward the seat front so as to slightly project to the outside in the seat width direction, and is arranged to be inclined more outward in the seat width direction than the left front floor connecting member 6a. ..

As shown in FIG. 2, the rear floor connecting member 6b is composed of a flat plate body, one end of which is attached to the rear portion of the left and right lower rails 7a, and the other end of which extends outward in the seat width direction and is placed on the vehicle body floor. It is bolted.
The rear floor connecting member 6b is arranged between the reclining device 13 and the rear end portion of the support base 40 in the front-rear direction.

The rail device 7 is arranged between the seat body and the vehicle body floor in the up-down direction, and is fixed on the vehicle body floor via the floor connecting member 6 as shown in FIG. Of lower rails 7a and left and right upper rails 7b slidably supported along the lower rails 7a.
A support base 40 is installed on the upper surfaces of the left and right upper rails 7b, and a rail lock device (not shown) capable of locking the upper rail 7b while being supported by the lower rails 7a is mounted on the support base 40.
The rail lock device includes an operation strap 7c for switching between a locked state in which the upper rail 7b is locked and a unlocked state.
The operation strap 7c is arranged on the right side in the seat width direction and extends so as to project toward the front of the seat.

The back frame 10 is formed of a substantially rectangular frame-shaped body that serves as a skeleton of the seat back 1. As shown in FIG. 3, the back frame 10 is connected to the support base 40 on the left and right outer side surfaces of the back frame 10. Left and right connecting brackets 11 are attached.
The connecting bracket 11 is made of a substantially arcuate sheet metal member extending in the vertical direction, and the upper end of the connecting bracket 11 is attached to the back frame 10 and the lower end thereof is attached to the support base 40. A bracket cover 11a made of resin is attached to the left and right outer sides of the connecting bracket 11.
A seat rotation shaft 12 pivotally supported by a support base 40 in the left-right direction is provided at the lower end of the left connecting bracket 11, and a back frame 10 is provided at the lower end of the right connecting bracket 11 relative to the support base 40. A reclining device 13 for rotatably connecting is attached.

The reclining device 13 is composed of a known device, is disposed on the left and right inner side surfaces of the connecting bracket 11 as shown in FIG. 3, and suppresses the interference with the cushion frame 20 in the left-right direction.
The reclining device 13 mainly includes a seat rotation shaft 12 and a spiral spring 14 that rotates the back frame 10 about the seat rotation shaft 12 toward the front side and biases the back frame 10 to the stored state.
The seat rotation shaft 12 is axially supported by the back frame 10 side and the support base 40 side in the left-right direction, and one end of the spiral spring 14 is locked to the back frame 10 side and the other end is supported on the support base 40 side. It is locked.
The reclining device 13 can be switched to a locked state that locks the rotating operation of the back frame 10, locks the back frame 10 in the standing posture of FIG. 1, and unlocks the locked state by operating the operation lever 1c. However, the back frame 10 can be rotated forward by the urging force of the spiral spring 14 to be folded toward the vehicle body floor.

The cushion frame 20 is composed of a substantially rectangular frame-shaped body that serves as a skeleton of the seat cushion 2, and as shown in FIG. 3, the side frames 21 arranged on the left and right sides are connected to the front portions of the side frames 21. The front connecting pipe 22, the central connecting pipe 23 that connects the front and rear central portions of the side frames, and the pan frame 24 as a plate-shaped frame that connects the front connecting pipe 22 and the central connecting pipe 23 are mainly It is configured.

The side frame 21 is formed of a sheet metal member extending in the seat front-rear direction, a front portion thereof is connected to the front connecting pipe 22, and a cushion frame 20 is rotatably connected to the back frame 10 at a rear end portion thereof. A cushion rotating device 25 is attached.
As shown in FIG. 2, an outer cushion cover 21a and an inner cushion cover 21b, which have a U-shaped vertical cross section, are attached to the rear portion of the side frame 21 so as to surround the side frame 21.
The front connecting pipe 22 is made of a U-shaped pipe member, and a leg rotating device 28 that connects the detachable leg 30 to the cushion frame 20 in a rotatable manner is attached to the left and right inner side surfaces thereof.

The cushion rotating device 25 is a known device, and as shown in FIG. 3, a cushion rotating shaft 26, a spiral spring 27 that urges the cushion frame 20 downward with the cushion rotating shaft 26 as a center, Is equipped with.
The cushion rotation shaft 26 is axially supported on the back frame 10 side and the cushion frame 20 side in the left-right direction, and one end of the spiral spring 27 is locked on the back frame 10 side and the other end is on the cushion frame 20 side. It is locked.
The cushion turning device 25 can be switched to a locked state in which the turning operation of the cushion frame 20 is locked.
As shown in FIG. 8( c ), the cushion rotation device 25 stores the seat body on the storage floor, specifically, when the back frame 10 is folded to the cushion frame 20 side. The rotation of the cushion frame 20 is locked. Then, as shown in FIG. 10A, when the detachable leg 30 that functions as an operation lever is pulled, the locked state is released, and the cushion frame 20 is moved downward with respect to the back frame 10 by the urging force of the spiral spring 27. It can be rotated.

The leg rotation device 28 includes a leg rotation shaft 28a and a spring member that biases the detachable leg 30 on the side opposite to the cushion frame 20 about the leg rotation shaft 28a, in other words, in a direction away from the cushion frame 20. 28b and.
The leg rotation shaft 28a is axially supported by the front connecting pipe 22 and the upper ends of the detachable legs 30 in the left-right direction, and one end of the spring member 28b is locked to the cushion frame 20 side and the other end thereof is the detachable leg. It is locked on the 30 side.
The leg rotation device 28 can be switched to a lock state in which the rotation operation of the attachment/detachment leg 30 is locked, and as shown in FIG. 8A, the attachment/detachment leg 30 is separated from the leg holding member 50, and the cushion frame is released. The rotation operation of the detachable leg 30 is locked when the detachable leg 30 is stored on the 20 side. Then, as shown in FIG. 10A, when the locked detachable leg 30 is pulled, the locked state is released, and the detachable leg 30 is returned to the use state by the biasing force of the spring member 28b. It can be moved to a position where it can be attached to 50.

As shown in FIG. 3, the attachment/detachment leg 30 is a substantially U-shaped pipe member that supports the seat cushion 2, and connects the leg body portions 31 arranged on the left and right sides to the lower ends of the leg body portions 31. And a leg connecting portion 32.
The upper ends of the leg body portions 31 are connected to the left and right inner side surfaces at a substantially central portion in the front-rear direction of the cushion frame 20, and the substantially central portion in the left-right direction of the leg connecting portion 32 is detachably held by the leg holding member 50. Has been done.
The upper end portion of the detachable leg 30 projects more toward the front of the seat than the lower end portion of the detachable leg 30, and is inclined forward and upward from the lower end portion of the detachable leg 30 toward the upper end portion of the detachable leg 30.

The support base 40 is a member that supports the seat body, and as shown in FIG. 5, the left and right side base portions 41 arranged along the upper rails 7b on the left and right sides, and the front portion of each side base portion 41. A first base connecting portion 42 for connecting, a second base connecting portion 43 for connecting the substantially central portion of each side base portion 41, left and right reinforcing base portions 44 attached to the upper surface of each side base portion 41, A holding member support portion 45 that connects the base connecting portion 42 and the second base connecting portion 43 and supports the leg holding member 50 is provided.

As shown in FIG. 5, the side base portion 41 and the reinforcement base portion 44 are formed of a substantially crank-shaped sheet metal member that is long in the front-rear direction, and the side base portion 41 is connected to the upper surface of the upper rail 7b. The side base portion 41 is vertically overlapped with each other to form a closed cross-section structure.
The left and right ends of each of the first base connecting portion 42 and the second base connecting portion 43 are sandwiched between the side base portion 41 and the reinforcing base portion 44 and connected.
The holding member support portion 45 is a curved metal plate member that supports the leg holding member 50, and a front portion thereof is attached to the first base connecting portion 42 and a rear portion thereof is attached to the second base connecting portion 43. There is.

As shown in FIGS. 3 and 5, the leg holding member 50 includes a substantially U-shaped clip member that detachably holds the attachment/detachment leg 30, and supports the holding member at a position in which an opening portion thereof is directed obliquely forward and upward. It is supported by the portion 45.
The leg holding member 50 includes a pair of side wall portions 51 and a bottom wall portion 52 that connects the lower end portions of the side wall portions 51.
Each side wall portion 51 is bent in a direction in which the side wall portions 51 approach each other from the lower end portion toward the upper end portion. In other words, each side wall portion 51 is bent in the opening inward direction so as to narrow the opening portion of the leg holding member 50. A curl portion 53, which is bent toward the outside of the opening, is formed at the upper end portion.
The pair of curl portions 53 respectively penetrate through the openings provided in the base cover 60 and are exposed to the outside of the detachable leg 30 side.

In a portion adjacent to the leg holding member 50, an inertial lock device 54 that locks the leg connecting portion 32 of the attachment/detachment leg 30 while being held by the leg holding member 50 at the time of a rear collision of the vehicle is arranged.
The inertia lock device 54 corresponds to a lock device, is attached to the support base 40, and is arranged at a position overlapping the leg holding member 50 in the seat front-rear direction.
The inertial lock device 54 is arranged in an empty space on the left side in the seat width direction with respect to the center position of the support base 40.

The base cover 60 is made of a resin molded product that covers the entire support base 40 from above, and as shown in FIG. 4, a front cover 61 arranged on the front side of the seat and a rear cover arranged behind the front cover 61. ,,. The front cover 61 and the rear cover are snap-fitted together.

The front cover 61 has a guide shape that guides the removable legs 30 that move together with the seat body.
Specifically, the front cover 61 is disposed on the leg accommodation recess 62 for accommodating the attachment/detachment leg 30 and on the seat rear side of the leg accommodation recess 62 so that the attachment/detachment leg 30 may move rearward of the leg accommodation recess 62. A leg movement restricting portion 63 that restricts the leg movement is provided, and a contact portion 64 that is disposed on the front side of the seat with respect to the leg accommodating concave portion 62 and that can contact the left side portion of the seat cushion 2.

The leg accommodating recessed portion 62 is a substantially U-shaped recessed portion that is recessed downward from a substantially central portion of the upper surface of the base cover 60, and is arranged at a position with its opening portion directed forward and obliquely upward.
A rectangular opening is formed in the front and rear side wall portions of the leg accommodating recess 62, and a part of the leg holding member 50 is inserted from the rear surface side of the base cover 60 through the opening as shown in FIG. It is exposed to the outside.
Further, as shown in FIG. 4, an opening extending vertically is formed in the rear side wall portion, and a part of the inertia lock device 54 is exposed to the outside from the rear surface side of the base cover 60 through the opening. Exposed.

As shown in FIG. 4, the leg movement restricting portion 63 includes a portion projecting from the substantially central portion of the upper surface of the base cover 60 toward the seat front side, and is continuously formed from the rear portion of the leg accommodating recess 62. ..
When the detachable leg 30 is housed in the leg accommodating recess 62, the leg movement restricting portion 63 regulates the rearward movement of the detachable leg 30 and can guide the detachable leg 30 to the leg accommodating recess 62 side.
The contact portion 64 is a convex portion that projects upward from the upper surface of the base cover 60, and is arranged at a position that vertically overlaps with the left side portion of the seat cushion 2.

In the above configuration, as shown in FIG. 4, the center position of the seat back 1 in the seat width direction is arranged so as to be displaced to the left side in the seat width direction with respect to the center position of the seat cushion 2.
Similarly, the center position of the pair of floor connecting members 6 in the seat width direction is offset to the left with respect to the center position of the seat cushion 2.
Therefore, it is possible to realize a seat in which the rigidity of the seat is ensured while considering the layout in the vehicle.

Further, in the above-described configuration, the center position of the headrest 3 in the seat width direction is arranged at substantially the same position as the center position of the seat cushion 2.
Therefore, with respect to the headrest 3 that does not significantly affect the layout in the vehicle, it is possible to set the layout in which seat rigidity is prioritized.

Further, in the above-mentioned configuration, the center position of the support base 40 in the seat width direction is substantially the same as the center position of the pair of floor connecting members 6, and is offset to the right with respect to the center position of the seat cushion 2. ..
Therefore, the load of the seated occupant can be efficiently received.

<Seat storage operation>
Next, the operation of moving the seat body from the used state to the stored state will be described with reference to FIGS. 7 and 8. 7 and 8, the reclining device 13, the cushion rotating device 25, and the leg rotating device 28 are in a locked state when shown by a black circle and in an unlocked state when shown by a white circle. Shall be shown. The same applies to FIGS. 9 and 10.

When the vehicle seat S is in the use state shown in FIG. 7A, the seat back 1 is supported by the support base 40, is locked in the standing posture by the reclining device 13, and is connected to the seat back 1. The cushion 2 is supported from below by the detachable legs 30 held by the leg holding members 50.

When moving the vehicle seat S from the use state to the storage state, for example, the operation lever 1c of FIG. 1 provided on the upper surface of the seat back 1 is operated.
As the occupant operates the operation lever 1c, as shown in FIG. 7B, the reclining device 13 is unlocked, and the seat back 1 receives the seat cushion 2 by the urging force of the spiral spring 14. The rotation of the seat around the seat pivot shaft 12 is started toward the front side of the seat so as to move the seat up to.
The attachment/detachment leg 30 starts to rotate with respect to the seat cushion 2 toward the seat cushion 2 side about the leg rotation shaft 28a in association with the rotation of the seat back 1. At this time, since the attachment/detachment leg 30 is in a tensioned state between the seat cushion 2 and the vehicle body floor side, the seat cushion 2 and the seat back 1 can be stably moved.
A known cable (not shown) is connected between the operation lever 1c and the reclining device 13, and the cable is pulled by the operation of the operation lever 1c to release the locked state.

As shown in FIG. 8A, when the seat back 1 reaches a predetermined rotation position, the attachment/detachment leg 30 separates from the leg holding member 50.
The detachable leg 30 that has been detached rotates on the upper surface of the base cover 60, so as to be folded toward the seat cushion 2 side around the leg pivot shaft 28a against the biasing force of the spring member 28b. When the attachment/detachment leg 30 reaches a predetermined rotation position, the attachment/detachment leg 30 is locked by the leg rotation device 28 in a state of being stored on the seat cushion 2 side.

Further, as shown in FIG. 8B, when the seat back 1 reaches a predetermined rotation position, the front portion of the seat cushion 2 comes into contact with the storage floor surface before the attachment/detachment leg 30.

By the series of operations described above, as shown in FIG. 8C, the seat body is stored on the storage floor, and the vehicle seat S is switched to the stored state.
The seat cushion 2 is locked by the cushion rotating device 25 when in the stored state, specifically, when the seat back 1 is folded toward the seat cushion 2 side.
The detachable leg 30 is arranged at a lower position than the leg holding member 50 in the housed state.

<Sheet tip up operation>
Next, the operation of moving the seat body from the stored state to the tip-up state will be described with reference to FIG.
When the vehicle seat S is in the stored state shown in FIG. 9A, for example, an occupant manually raises the seat body upward to switch to the tip-up state shown in FIG. 9B.
At this time, since the cushion rotating device 25 locks the rotating operation of the seat cushion 2, the seat cushion 2 can be integrally lifted upward by raising the seat back 1 upward.
In the tip-up state, by sliding the upper rail 7b to the seat rear side with respect to the lower rail 7a, a wide luggage compartment space can be secured on the seat front side.

When the vehicle seat S is switched to the tip-up state shown in FIG. 9B, the seat back 1 is returned to the same position as the position in the use state, and is locked by the reclining device 13 in the standing posture.

<Seat return operation>
Next, the operation of moving the seat body from the tip-up state to the use state will be described with reference to FIG.
When moving the vehicle seat S from the tip-up state to the use state, as shown in FIG. 10A, for example, the detachable leg 30 that functions as an operation portion is operated.
The occupant pulls the attachment/detachment leg 30 upward about the leg rotation shaft 28a, in other words, pulls the attachment/detachment leg 30 in a direction away from the seat cushion 2 side. It will be canceled.
A known cable (not shown) is connected between the detachable leg 30 and the cushion turning device 25, and the cable is pulled by the operation of the detachable leg 30 to release the locked state. There is.

When the cushion rotating device 25 is released, the seat cushion 2 rotates downward with respect to the seat back 1 by the urging force of the spiral spring 27, as shown in FIG.
With the release of the leg rotation device 28, the attachment/detachment leg 30 rotates about the leg rotation shaft 28a to a position where it can be attached to the leg holding member 50 by the biasing force of the spring member 28b, and is attached to the leg holding member 50. To be done.
At this time, the detachable leg 30 moves toward the leg holding member 50 attached to the lower end side of the leg accommodating recess 62 by being guided by the leg accommodating recess 62 and the leg movement restricting portion 63 of the base cover 60. Come to do.
By the series of operations described above, the vehicle seat S returns to the usage state shown in FIG.

<Other embodiments>
In the above embodiment, the storage floor is formed in front of the vehicle seat S, but the storage floor may be formed behind the vehicle seat S without being particularly limited.
In that case, it is desirable that the positional relationship between the seat rotation shaft 12 and the attachment/detachment leg 30 in the seat front-rear direction is reversed.
As another example of the stored state, a state in which the seat back 1 is folded and the seat body is flipped up and rotated to one side in the seat width direction may be assumed as the stored state.

In the above embodiment, the stored state of the seat body is described as being equivalent to the moving state in the claims, but is not particularly limited, and the tip-up state and the like of the present embodiment correspond to the moving state. Good as a thing.

In the above-described embodiment, as shown in FIG. 4, the center positions of the seat back 1 and the floor connecting member 6 in the seat width direction are both offset and displaced to the left with respect to the center position of the seat cushion 2. Of course, the offset may be offset to the right.

In the above-described embodiment, as shown in FIG. 3, the support base 40 is fixed to the vehicle body floor via the rail device 7, but is not particularly limited, and the rail device 7 is not necessary and is directly fixed to the vehicle body floor. It may be done.
Further, the connecting bracket 11 may be omitted, and the seat back 1 and the support base 40 may be directly connected via the seat rotating shaft 12.

In the above-described embodiment, a storable vehicle seat used in an automobile has been described as a specific example, but the present invention is not limited to this, and in addition to vehicle seats such as trains and buses, vehicle seats such as airplanes and ships. 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 spirit of the invention, and it goes without saying that the present invention includes equivalents thereof.

S Vehicle seat 1 Seat back 1a, 2a, 3a Cushion pad 1b, 2b, 3b Skin 1c Operating lever 2 Seat cushion 3 Headrest 4 Armrest 5 Buckle 6 Floor connecting member 6a Front floor connecting member 6b Rear floor connecting member 7 Rail device 7a Lower rail 7b Upper rail 7c Operation strap (operation part)
10 Back Frame 11 Connection Bracket 11a Bracket Cover 12 Seat Rotation Shaft 13 Reclining Device 14 Spiral Spring 20 Cushion Frame 21 Side Frame 21a Outer Cushion Cover 21b Inner Cushion Cover 22 Front Connection Pipe (Front Connection Member)
23 Central connecting pipe (central connecting member)
24 Pan Frame 25 Cushion Rotating Device 26 Cushion Rotating Shaft 27 Spiral Spring 28 Leg Rotating Device 28a Leg Rotating Shaft 28b Spring Member 30 Detachable Leg 31 Leg Body 32 Leg Connecting Portion 40 Support Base 41 Side Base 42 Second Base connecting portion 43 Second base connecting portion 44 Reinforcing base portion 45 Holding member support portion (support portion)
50 leg holding member 51 side wall part 52 bottom wall part 53 curl part 54 inertia lock device 60 base cover 61 front cover 62 leg accommodating recess (recess)
63 Leg movement restricting portion 64 Abutment portion

Claims (10)

A seat body having a seat back which serves as a backrest portion, and a seat cushion which is connected to the seat back and serves as a seat portion;
A vehicle seat capable of switching between a use state in which an occupant can sit and a moving state in which the seat body is moved from the use state,
A rail device having left and right lower rails fixed on the vehicle body floor and extending in the seat front-rear direction, and left and right upper rails slidably supported along the lower rails,
A support base attached to the left and right upper rails and supporting the seat body;
Part of the support base is arranged at the same height as the left and right lower rails in the vertical direction ,
A vehicle seat , wherein a lower end of the support base is disposed above the vehicle body floor . A seat body having a seat back which serves as a backrest portion, and a seat cushion which is connected to the seat back and serves as a seat portion;
A vehicle seat capable of switching between a use state in which an occupant can sit and a moving state in which the seat body is moved from the use state,
A rail device having left and right lower rails fixed on the vehicle body floor and extending in the seat front-rear direction, and left and right upper rails slidably supported along the lower rails,
A support base attached to the left and right upper rails and supporting the seat body;
Part of the support base is arranged at the same height as the left and right lower rails in the vertical direction ,
The support base is mounted on the left and right upper rails, the left and right side base parts, a first base connecting part that connects front portions of the left and right side base parts, and is mounted above the left and right side base parts. And a reinforced base portion,
The vehicle seat, wherein the first base connecting portion and the reinforcing base portion are arranged at positions overlapping in the vertical direction . The support base connects the second base connecting portion connecting the substantially central portions of the left and right side base portions to the first base connecting portion and the second base connecting portion, and extends in the seat front-rear direction. The vehicle seat according to claim 2, further comprising: The mounting portion of the reinforcing base portion, which is attached to the side base portion, is arranged between the first base connecting portion and the second base connecting portion in the seat front-rear direction. The vehicle seat according to item 3. A base cover for covering the support base from above,
On the upper surface of the front portion of the base cover, a recessed portion that is recessed downward is formed at a substantially central portion in the seat width direction,
The vehicle seat according to any one of claims 2 to 4, wherein the first base connecting portion is arranged in front of the seat with respect to the recess. A cushion frame that serves as a skeleton of the seat cushion is provided,
The cushion frame includes left and right side frames arranged laterally of the seat, and a front connecting member that connects front portions of the left and right side frames,
The vehicle seat according to any one of claims 2 to 5, wherein in the use state, the first base connecting portion is arranged rearward of the seat with respect to the front connecting member. The cushion frame further includes a central connecting member that connects substantially central portions in the front-rear direction of the left and right side frames, and a pan frame as a plate-shaped frame that connects the front connecting member and the central connecting member. ,
7. The vehicle according to claim 6, wherein, in the use state, the first base connecting portion is arranged in front of the seat with respect to a portion of the pan frame to which the central connecting member is attached. Sheet. The vehicle seat according to claim 7, wherein the first base connecting portion is disposed between the front connecting member and the central connecting member in a seat front-rear direction in the use state. With a buckle for mounting a tongue plate provided on the seat belt that restrains the seated occupant,
The vehicle seat according to any one of claims 2 to 8 , wherein the first base connecting portion is arranged inside the buckle in the seat width direction. The buckle is arranged on one side in the seat width direction of the vehicle seat,
A cushion rotation device that is disposed on the other side in the seat width direction of the vehicle seat and that rotatably connects the seat cushion to the seat back;
The vehicle seat according to claim 9 , wherein the first base connecting portion is arranged at a position closer to the buckle side than the cushion rotating device in the seat width direction.

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