JP2016088481A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat of which compactification can be achieved in a storage state such that a seat body is stored.SOLUTION: A vehicle seat S can be stored in a storage recess formed on a vehicle body floor. The vehicle seat S is equipped with left and right rail devices 7 which are fixed onto the vehicle body floor and so support a seat body as to be movable in a longitudinal direction, and a reclining device 13 which rotatably connects the seat body to a support base 40 which is constructed on the left and right rail devices 7. The reclining device 13 is located at a position at which the reclining device is overlapped with an upper rail 7b in a vertical direction, and is located outside the upper rail 7b in a seat width direction.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vehicle seat, and more particularly to a vehicle seat capable of storing a seat back and a seat cushion at a position lower than a vehicle body floor.

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

A 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, a holding groove in which an upper end supports a front portion of a seat cushion, and a lower end is fixed to a storage floor. And a leg structure that is rotatably held by the storage unit.
When the seat body is retracted, the seat back rotates relative to the vehicle floor to move the seat cushion to the storage floor, and the leg member rotates around the holding groove in conjunction with the seat back. It can be stored on the storage floor.
The vehicle seat can be switched from a use state in which an occupant can be seated to a tip-up state in which the seat member is lifted upward after the leg member is detached from the holding groove.

JP 2009-67309 A

By the way, in the seat which can store a sheet main body like patent documents 1, when it is in the storage state which stored the sheet main body, the vacant space can be used as a cargo space.
For this reason, it has been desired to reduce the size of the seat when in the stowed state in order to secure the cargo space as large as possible.

Further, in the seat of Patent Document 1, the structural components of the storage structure are attached not only to the vehicle body floor surface on which the seat body is installed, but also to the storage floor surface, and the structure is complicated to store the seat body. .
Therefore, a vehicle seat that can be stored on a storage floor with a simple structure has been desired.

Further, in the seat as 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 swinging width in the front-rear direction of the detached leg member is increased due to the long overall length of the leg member. The operation of reattaching the member to the holding groove has been difficult.
Therefore, a vehicle seat that can be easily switched from the state of use 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 is compact when the seat body is housed.
Another object of the present invention is to provide a vehicle seat that can be stored on a storage floor with a simple structure.
Another object of the present invention is to provide a vehicle seat that can be easily switched from a use state.

  According to the vehicle seat of the present invention, there is provided a seat body having a seat back serving as a backrest portion and a seat cushion coupled to the seat back and serving as a seating portion. A vehicle seat that can be stored in a storage position formed on the vehicle body floor, and is mounted on the vehicle body floor, and is attached to the left and right lower rails extending in the front-rear direction of the seat, and is slidably mounted along the lower rail. And a reclining device that is disposed at a position overlapping the upper rail in the vertical direction and rotatably connects the seat body to the vehicle body floor side. The

As described above, since the reclining device is disposed at a position overlapping the upper rail mounted on the vehicle body floor in the vertical direction, the height position of the reclining device can be set lower than in the conventional case. As a result, when the seat body is housed and rotated on the vehicle body floor side, the height position of the entire seat is lowered, and a large cargo space can be secured above the seat.
That is, it is possible to realize a vehicle seat that is compact when in the stored state.

At this time, the seat body can be stored at a position lower than the vehicle body floor, and is mounted on the left and right upper rails, and a support base that supports the seat body, is mounted on the support base, and the reclining A seat pivot shaft connected to one end side of the seat body in the longitudinal direction of the seat as a pivot shaft of the apparatus, an upper end portion is attached to the other end side of the seat body, and a lower end portion is detachable on the support base And a detachable leg supported by the head.
As described above, since all the components of the storage structure are arranged on the vehicle body floor, a vehicle seat that can be stored on the storage floor with a simple structure can be realized.
Further, since the lower end portion of the attachment / detachment leg is disposed not on the storage floor as in the prior art but on the vehicle body floor, the entire length of the attachment / detachment leg can be reduced. Since the swing width in the front-rear direction of the detachable leg is reduced by the small total length of the detachable leg, the detachable leg is easily held by the leg holding member. Therefore, the switching operation from the use state becomes easier.

At this time, the reclining device may be disposed outside the upper rail in the seat width direction.
With the above configuration, the reclining device does not interfere with the components arranged between the left and right upper rails, and thus the degree of freedom in the layout of the reclining device is increased.
Further, the pitch between the left and right upper rails can be reduced, and the size of the seat can be suppressed in the seat width direction.

At this time, a rail locking device is provided between the left and right upper rails and can be locked in a state where the upper rail is supported by the lower rail, and the reclining device is located at a position overlapping the rail locking device in the seat longitudinal direction. It is good to be arranged.
With the above configuration, an increase in the size of the seat in the front-rear direction of the seat can be suppressed.

At this time, a buckle disposed outside the seat body in the seat width direction and for mounting a tongue plate provided on a seat belt is provided, and the reclining device and the buckle are opposite to each other via the seat body. It is good to arrange in the side position.
With the above-described configuration, the degree of freedom of mutual layout is improved.

At this time, a floor connecting member for connecting the lower rail to the vehicle body floor is provided, and the floor connecting member may be disposed at a position overlapping the reclining device in the seat width direction.
With the above configuration, the seat body can efficiently withstand the load applied in the longitudinal direction of the seat.

At this time, the floor connecting member may be disposed behind the seat with respect to the reclining device.
With the above configuration, the seat body can efficiently withstand a rear load applied during acceleration of the vehicle and a rear collision.

At this time, at least one of the floor connecting members may be disposed in front of the seat with respect to the reclining device.
With the above configuration, the seat body can efficiently withstand a forward load applied when the vehicle is decelerated and a frontal collision occurs.

At this time, a connecting bracket for connecting the lower end portion of the seat back and the reclining device is provided, and the connecting bracket is attached to the outer side in the seat width direction than the reclining device, and the reclining device is sandwiched between the support base. It is good to be arranged in the position.
With the above configuration, the assembling rigidity of the reclining device is improved.

At this time, the connecting bracket is provided on the left and right side portions of the seat back, and one of the left and right connecting brackets is disposed outside the upper rail in the seat width direction, and the other is seated more than the upper rail. It is good to arrange inside the width direction.
With the above configuration, both the left and right connecting brackets can be assembled from one side in the seat width direction, and the efficiency of the assembly work is increased.

At this time, the reclining device is attached to the outer side surface of the support base in the seat width direction via a lycra mounting bracket, and the reclining device bracket is disposed so as to sandwich the reclining device in the seat longitudinal direction. It is preferable that at least two assembling portions to be assembled to the support base are provided.
With the above configuration, the assembling rigidity of the reclining device is further improved.
In addition, the arrangement of the assembling part can suppress an increase in the size of the sheet in the vertical direction of the sheet.

At this time, the support base includes: a base main body portion laid on the left and right upper rails; and a reinforcing base portion that is attached above the base main body portion and forms a closed cross-sectional structure with the base main body portion. It is preferable that the portion of the support base where the lycra mounting bracket is assembled has the closed cross-sectional structure.
With the above configuration, the assembling rigidity of the reclining device and its peripheral portion is further improved.

At this time, the portion of the support base having the closed cross-sectional structure is preferably recessed on the side opposite to the detachable leg side at a position facing the detachable leg.
With the above configuration, it is possible to suppress interference between the support base and the detachable leg that moves when the seat body is stored.

At this time, the reclining device may be disposed at a substantially central portion of the upper rail in the seat longitudinal direction.
With the above configuration, the upper rail can efficiently withstand the load applied from the seat body via the reclining device.

According to the first aspect of the present invention, the height position of the reclining device can be set lower than in the prior art. As a result, when the seat body is stored, the height position of the entire seat is lowered, and a large cargo space can be secured above the seat. That is, it is possible to realize a vehicle seat that is compact when in the stored state.
According to invention of Claim 2, the sheet | seat which can be accommodated in a storage floor with a simple structure is realizable. Further, when the seat body is moved between the use state and the storage state, the switching operation is improved.
According to the invention of claim 3, the degree of freedom of the layout of the reclining device is increased. Further, the size of the sheet can be suppressed in the sheet width direction.

According to the invention of claim 4, it is possible to suppress an increase in size of the seat in the front-rear direction of the seat.
According to the invention of claim 5, the degree of freedom of the layout arrangement of the reclining device and the buckle is improved.
According to the invention of claim 6, the seat body can efficiently withstand the load applied in the longitudinal direction of the seat.

According to the seventh aspect of the present invention, the seat body can efficiently withstand a rear load applied during acceleration of the vehicle and a rear collision.
According to the invention of claim 8, the seat body can efficiently withstand the forward load applied during deceleration of the vehicle and frontal collision.
According to invention of Claim 9, the assembly | attachment rigidity of a reclining apparatus improves.

According to the invention of claim 10, the efficiency of assembling the left and right connecting brackets is increased.
According to the invention of claims 11 and 12, the assembling rigidity of the reclining device and its peripheral portion is further improved. In addition, an increase in the size of the sheet can be suppressed in the vertical direction of the sheet.
According to invention of Claim 13, interference with an attachment or detachment leg and a support base can be suppressed.
According to the invention of claim 14, the upper rail can efficiently withstand the load applied from the seat body via the reclining device.

It is a perspective view of a vehicular 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 vehicular seat. It is a perspective view of the support base of a vehicle seat. It is a principal part enlarged view of FIG. 4, Comprising: It is a perspective view which shows a reclining apparatus periphery. FIG. 6 is an exploded perspective view of FIG. 5. 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 diagram for explaining an operation of moving from a use state to a storage state. It is a side view of a vehicle seat, and is a diagram for explaining an operation of moving to a stored state. It is a side view of a vehicle seat, and is a diagram for explaining an operation of moving from a stored state to a tip-up state. It is a side view of a vehicle seat, and is a diagram for explaining an operation of returning from a tip-up state to a use state.

Hereinafter, a vehicle seat according to an embodiment of the present invention will be described with reference to FIGS.
This embodiment is a vehicle seat that can store a seat body on a storage floor, and is fixed on the vehicle body floor, and is supported on the left and right rail devices that support the seat body so that the seat body can be moved back and forth. And a reclining device that rotatably connects the seat body to the support base, and the reclining device is disposed at a position overlapping the upper rail in the vertical direction. Is.
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 a rear seat corresponding to a rear seat of the vehicle, for example.
As shown in FIGS. 1 and 2, the vehicle seat S includes a seat body having a seat back 1, a seat cushion 2, and a headrest 3, an attachment / detachment leg 30 that supports the seat body from below, and an attachment / detachment leg 30. Mainly from a support base 40 for supporting the support base 40 from below, a leg holding member 50 attached to the support base 40 and detachably holding the lower end of the detachable leg 30, and a base cover 60 covering the support base 40 from above. It is configured.
As shown in FIGS. 2 and 3, the vehicle seat S is mounted on a vehicle body floor via a floor connecting member 6 and supports left and right rail devices 7 that support the seat body so as to be movable back and forth, and a support base. And a reclining device 13 that rotatably connects the seat back 1 to the vehicle 40.
As shown in FIG. 8, a concave storage floor formed at a position lower than the vehicle body floor is provided on the front side of the vehicle seat S.

The vehicle seat S can be arranged in three types of seat arrangements: a use state in which an occupant can be seated, a storage state in which the seat body is stored on the storage floor, and a tip-up state in which the seat body is flipped upward. It is a sheet.
Specifically, when the occupant pulls the operation lever 1c of FIG. 1 from the use state shown in FIG. 8A, the vehicle seat S is folded forward and folded and stored on the storage floor. The storage state is switched to that shown in FIG. Further, when the occupant manually raises the seat body upward from the stored state, the state is switched to the tip-up state shown in FIG. Further, when the occupant pulls the detachable leg 30 functioning as the operation portion from the tip-up state, the seat cushion 2 rotates downward with respect to the seat back 1 and returns to the use state shown in FIG. Details will be described later.

  As shown in FIG. 1, the seat back 1 is a backrest portion that supports the back of the occupant from the back, and the cushion pad 1a is placed on the back frame 10 of FIG. Has been configured. On the upper surface of the seat back 1, an operation lever 1c is disposed on the right side 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 shown in FIG. It is configured to be covered with the skin 2b.
A buckle 5 for attaching a tongue plate provided on a seat belt (not shown) is attached to the left side of the seat cushion 2. As shown in FIG. 2, the buckle 5 and the reclining device 13 are disposed at positions opposite to each other via the seat body.
The headrest 3 is a head that supports the occupant's head from behind, and is configured such that a cushion pad 3a is placed on a pillar (not shown) serving as a core and covered with an outer skin 3b.

As shown in FIGS. 2 and 3, the floor connecting member 6 is attached to the left and right side portions of the seat, and is disposed at a position overlapping the reclining device 13 in the seat width direction.
The floor connecting member 6 includes a front floor connecting member 6a and a rear floor connecting member 6b which are disposed at positions where the reclining device 13 is sandwiched in the seat front-rear direction.

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 part of the left and right lower rails 7a and bolted, and the other end extends forward of the seat and extends on the vehicle body floor. The bolt is fastened.
The rear floor connecting member 6b is formed of a flat plate body, one end is attached to the rear part of the left and right lower rails 7a, and the other end extends outward in the seat width direction and is bolted to the vehicle body floor.

The rail device 7 is disposed between the seat body and the vehicle body floor in the vertical direction. As shown in FIG. 3, the rail device 7 is fixed on the vehicle body floor via the floor connecting member 6 and extends in the left-right direction extending in the seat front-rear direction. It is mainly composed of a lower rail 7a and left and right upper rails 7b supported so as to be slidable along the lower rail 7a.
A support base 40 is installed on the upper surfaces of the left and right upper rails 7b. On the support base 40, as shown in FIG. 4, a rail lock device 8 capable of locking the upper rail 7b while being supported by the lower rail 7a is provided. It is attached.

As shown in FIG. 4, the rail lock device 8 is disposed at a position overlapping the reclining device 13 in the seat longitudinal direction, and an operation for switching between a locked state in which the upper rail 7 b is locked and a unlocked state. A strap 8a is provided.
The operation strap 8a is disposed on the right side in the seat width direction and extends so as to protrude toward the front of the seat.

The back frame 10 is formed of a substantially rectangular frame that serves as a skeleton of the seat back 1. As shown in FIG. 3, the lower portion of the left and right outer surfaces of the back frame 10 is connected to the support base 40. Left and right connecting brackets 11 are attached.
The connection bracket 11 is made of a substantially bow-shaped sheet metal member extending in the vertical direction. The upper end of the connection bracket 11 is attached to the back frame 10, and the lower end is attached to the support base 40. Reinforcing brackets 11a are assembled on the left and right inner surfaces of the connecting bracket 11 to improve rigidity.
A seat rotation shaft 12 that is pivotally supported by the support base 40 in the left-right direction is provided at the lower end of the left connection bracket 11, and the back frame 10 with respect to the support base 40 is provided at the lower end portion of the right connection bracket 11. A reclining device 13 for connecting the two to each other is attached.
The right connecting bracket 11 is disposed on the outer side in the seat width direction with respect to the upper rail 7b on the right side, while the left connecting bracket 11 is disposed on the inner side in the seat width direction with respect to the upper rail 7b on the left side. ing.

4 to 6, the reclining device 13 is accommodated on the inner surface in the seat width direction of the right connecting bracket 11, and the support base 40 is connected via the lycra mounting bracket 14. It is assembled on the outside surface.
The reclining device 13 is disposed at a position that partially overlaps the upper rail 7b in the vertical direction, is disposed at a substantially central portion of the upper rail 7b in the seat front-rear direction, and is disposed outside the right upper rail 7b in the seat width direction. .

The reclining device 13 biases the cradle main body 13a, the seat rotation shaft 12 serving as the rotation shaft of the reclining device 13, and the back frame 10 so as to rotate forward about the seat rotation shaft 12. It is mainly composed of spiral springs.
The seat rotation shaft 12 is pivotally supported by the connection bracket 11, the lycra body 13a, and the lycra mounting bracket 14 in the seat width direction.
A spiral spring (not shown) has one end locked to the back frame 10 side and the other end locked to the support base 40 side.

  The reclining device 13 can be switched to a locked state that locks the rotation operation of the back frame 10, locks the back frame 10 in the standing posture of FIG. 1, and releases the locked state by operating the operation lever 1 c. Then, the back frame 10 can be rotated forward by the urging force of the spiral spring and folded to the vehicle body floor side.

The lycra mounting bracket 14 is a member for attaching the lycra main body 13a to the outer surface of the support base 40, and is formed as a substantially hollow body by assembling the outer bracket 14a and the inner bracket 14b.
A pivot shaft hole for pivotally supporting the seat pivot shaft 12 is formed in a substantially central portion of the lycra mounting bracket 14 in the seat front-rear direction.
In addition, a bolt assembly portion 14 c for assembling to the side base portion 41 of the support base 40 is formed in the front portion and the rear portion of the lycra mounting bracket 14, respectively.
In addition, the flange part 11b provided in the connection bracket 11 is positioned mutually by contacting the upper end of the outer bracket 14a and the inner bracket 14b.

  The cushion frame 20 is formed of a substantially rectangular frame that is a skeleton of the seat cushion 2, and connects a side frame 21 disposed on the left and right sides and a front portion of each side frame 21 as shown in FIG. The front connecting pipe 22 that connects the front connecting pipe 22 and the central connecting pipe 23 that connects the front connecting pipe 22 and the central connecting pipe 23 are mainly configured. ing.

The side frame 21 is made of a sheet metal member extending in the front-rear direction of the seat, the front portion thereof is connected to the front connection pipe 22, and the cushion frame 20 is rotatably connected to the back frame 10 at the rear end portion. A cushion rotating device 25 is attached.
The front connection pipe 22 is formed of a U-shaped pipe member, and a leg rotation device 28 that rotatably connects the detachable leg 30 to the cushion frame 20 is attached to the left and right inner 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 about the cushion rotating shaft 26, It has.
The cushion rotation shaft 26 is pivotally 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 rotation device 25 can be switched to a locked state in which the rotation operation of the cushion frame 20 is locked.
As shown in FIG. 9C, the cushion rotation device 25 is configured to store the seat body on the storage floor, specifically, when the back frame 10 is folded to the cushion frame 20 side. The rotational movement of the cushion frame 20 is locked. 11A, when the detachable leg 30 functioning as the 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. Can be rotated.

The leg rotation device 28 includes a leg rotation shaft 28a and a spring member that urges the attachment / detachment leg 30 on the opposite side of the cushion frame 20 around the leg rotation shaft 28a, in other words, away from the cushion frame 20. 28b.
The leg rotation shaft 28a is pivotally supported by the front connecting pipe 22 and the upper end of the detachable leg 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 is detachable leg. It is locked on the 30 side.
The leg rotation device 28 can be switched to a locked state in which the rotation operation of the attachment / detachment leg 30 is locked, and the attachment / detachment leg 30 is detached from the leg holding member 50 as shown in FIG. When it is housed on the 20 side, the rotation of the detachable leg 30 is locked. Then, as shown in FIG. 11A, when the locked attachment / detachment leg 30 is pulled, the locked state is released, and the attachment / detachment leg 30 is returned to the use state by the biasing force of the spring member 28b. 50 can be moved to a position where it can be mounted.

As shown in FIG. 3, the detachable leg 30 is a substantially U-shaped pipe member that supports the seat cushion 2, and connects the leg main body portion 31 disposed on the left and right sides and the lower end of each leg main body portion 31. A leg connecting portion 32.
The upper end of the leg main body 31 is connected to the left and right inner 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.
The upper end portion of the detachable leg 30 protrudes forward of the seat from the lower end portion of the detachable leg 30, and is inclined 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. As shown in FIG. 4, the left and right side base portions 41 arranged along the left and right upper rails 7 b are connected to the front portions of the side base portions 41. The first base connecting portion 42, the second base connecting portion 43 connecting the substantially central portion of each side base portion 41, the left and right reinforcing base portions 44 attached to the upper surface of each side base portion 41, and the first base A holding member support portion 45 that connects the connecting portion 42 and the second base connecting portion 43 and supports the leg holding member 50 is provided.
The left and right side base parts 41, the first base connecting part 42, and the second base connecting part 43 correspond to the base body part in the claims.

As shown in FIG. 4, the side base portion 41 and the reinforcement base portion 44 are made of a substantially crank-shaped sheet metal member that is long in the front-rear direction. The side base portion 41 is connected to the upper surface of the upper rail 7b. The side base portion 41 overlaps with the upper and lower sides to form a closed cross-sectional structure.
As shown in FIG. 5, a lycra mounting bracket 14 is assembled on the outer surface of the portion where the closed cross-sectional structure is formed.
Further, a stepped portion 46 is formed in the portion where the closed cross-sectional structure is formed, and is recessed on the opposite side (lower side) to the detachable leg 30 side at a position facing the detachable leg 30.

As shown in FIG. 3, the left and right ends of each of the first base connecting portion 42 and the second base connecting portion 43 are connected by being sandwiched between a side base portion 41 and a reinforcing base portion 44.
The holding member support portion 45 is a curved sheet metal member that supports the leg holding member 50, 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. Yes.

As shown in FIGS. 3 and 4, the leg holding member 50 is formed of a substantially U-shaped clip member that detachably holds the detachable leg 30, and supports the holding member at a position in which the opening portion is obliquely upward and upward. 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 51 is bent in a direction close to each other from the lower end to the upper end, in other words, is bent so as to narrow the opening portion of the leg holding member 50, A curled portion 53 that is warped in the outward direction of the opening is formed.
The pair of curl portions 53 respectively penetrates openings provided in the base cover 60 shown in FIG. 7 and are exposed to the outside on the side of the attachment / detachment leg 30.

  An inertia lock device 54 that locks the leg connecting portion 32 of the detachable leg 30 while being held by the leg holding member 50 at the time of a rear-end collision of the vehicle is disposed at a portion adjacent to the leg holding member 50.

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. 7, a front cover 61 disposed on the front side of the seat, and a rear cover disposed on the rear side of the front cover 61. , Is composed of.
The front cover 61 has a guide shape that guides the detachable leg 30 that moves together with the seat body. Specifically, the leg accommodating recess 62 that accommodates the detachable leg 30, and the detachable leg 30 from the leg accommodating recess 62. And a leg movement restricting portion 63 that restricts the rearward movement.

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

The leg movement restricting portion 63 is a portion that protrudes from the substantially central portion of the upper surface of the base cover 60 toward the front side of the seat, and is formed continuously from the rear portion of the leg housing recess 62.
The leg movement restricting portion 63 can restrict the rearward movement of the detachable leg 30 when the detachable leg 30 is accommodated in the leg accommodating recess 62, and can guide the detachable leg 30 toward the leg accommodating recess 62.

<Sheet storage operation>
Next, an operation for moving the seat body from the use state to the storage state will be described with reference to FIGS. 8 and 9, the reclining device 13, the cushion rotating device 25, and the leg rotating device 28 are in a locked state when illustrated by a black circle, and are in an unlocked state when illustrated by a white circle. Shall be shown. The same applies to FIGS. 10 and 11.

  When the vehicle seat S is in the use state shown in FIG. 8A, the seat back 1 is supported by the support base 40 and 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 member 50.

When the vehicle seat S is moved from the use state to the storage state, the operation lever 1c of FIG. 1 provided on the upper surface of the seat back 1 is operated.
When the occupant operates the operation lever 1c, the reclining device 13 is unlocked as shown in FIG. 8B, and the seat back 1 is moved from the seat cushion 2 to the storage floor by the urging force of the spiral spring. Rotation is started to the front side of the seat around the seat rotation shaft 12 so as to be moved.
The detachable leg 30 starts to rotate toward the seat cushion 2 around the leg rotation shaft 28a with respect to the seat cushion 2 in conjunction with the rotation of the seat back 1. At this time, the detachable leg 30 is in a state of being stretched between the seat cushion 2 and the vehicle body floor side, so that the seat cushion 2 and the seat back 1 can be moved stably.

Note that 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, thereby releasing the locked state.
It is desirable that the cable is positioned by passing through a region surrounded by the back frame 10, the connection bracket 11, and the reinforcement bracket 11a around the reclining device 13.

When the seat back 1 reaches a predetermined rotational position as shown in FIG. 9A, the detachable leg 30 is detached from the leg holding member 50.
The detached detachable leg 30 rides on the upper surface of the base cover 60 and rotates so as to be folded toward the seat cushion 2 around the leg rotation shaft 28a against the urging force of the spring member 28b. Then, when the attachment / detachment leg 30 reaches a predetermined rotation position, the attachment / detachment leg 30 is locked in a state of being accommodated on the seat cushion 2 side by the leg rotation device 28.

Furthermore, when the seat back 1 reaches a predetermined rotational position as shown in FIG. 9B, the front portion of the seat cushion 2 comes into contact with the storage floor surface before the attachment / detachment leg 30.
As a result of the above series of operations, as shown in FIG. 9C, 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 the seat cushion 2 is in the stowed state, specifically when the seat back 1 is folded to the seat cushion 2 side.

<Seat 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 storage state shown in FIG. 10A, the occupant manually raises the seat body to switch to the tip-up state shown in FIG. 10B.
At this time, since the cushion rotation device 25 locks the rotation operation of the seat cushion 2, the seat cushion 2 can be raised integrally by raising the seat back 1 upward.
In the tip-up state, a large cargo space can be secured on the front side of the seat by sliding the upper rail 7b toward the rear side of the seat with respect to the lower rail 7a.

  When the vehicle seat S is switched to the tip-up state shown in FIG. 10B, the seat back 1 is returned to the same position as that in the use state and is locked in a standing posture by the reclining device 13.

<Seat return operation>
Next, an operation for moving the seat body from the tip-up state to the use state will be described with reference to FIG.
When the vehicle seat S is moved from the tip-up state to the use state, as shown in FIG. 11A, for example, the detachable leg 30 that functions as an operation portion is operated.
When the occupant pulls the detachable leg 30 upward about the leg rotation shaft 28a, in other words, by pulling it in the direction away from the seat cushion 2, the cushion rotation device 25 and the leg rotation device 28 are locked. Canceled.
A known cable (not shown) is connected between the attachment / detachment leg 30 and the cushion rotation device 25, and the cable is pulled by the operation of the attachment / detachment leg 30 to release the locked state. Yes.

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.
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 urging force of the spring member 28b as the leg rotation device 28 is released, and is attached to the leg holding member 50. Is 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 in the base cover 60. To come.
By the series of operations, the vehicle seat S returns to the use state shown in FIG.

<Other embodiments>
In the above embodiment, as shown in FIG. 8, the storage floor is formed in front of the seat of the vehicle seat S, but the storage floor is formed in the rear of the vehicle seat S without any particular limitation. Also good.
In that case, it is desirable that the positional relationship between the seat rotation shaft 12 and the detachable leg 30 in the seat front-rear direction is reversed.

In the above embodiment, as shown in FIGS. 3 and 4, the reclining device 13 is connected to the rail device 7 (upper rail 7 b) on the vehicle body floor via the support base 40, but is not particularly limited. Further, the support base 40 may be directly attached to the upper rail 7b without using it.
Further, the reclining device 13 may directly connect the seat back 1 and the support base 40 without using the connection bracket 11. Further, it is of course possible to directly connect the seat back 1 and the upper rail 7b without using the support base 40.

  In the above-described embodiment, a stowable vehicle seat used for an automobile has been described as a specific example. However, the seat is not limited to this, and a vehicle seat such as a train or a bus, or a vehicle seat such as an airplane or a ship. Can also be used.

In the present embodiment, the vehicle seat S according to the present invention has been mainly described.
However, said embodiment is only an example for making an understanding of this invention easy, and does not limit this invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes the equivalents thereof.

S Vehicle seat 1 Seat back 1a, 2a, 3a Cushion pad 1b, 2b, 3b Skin 1c Operation lever 2 Seat cushion 3 Headrest 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 8 Rail lock device 8a Operation strap 10 Back frame 11 Connection bracket 11a Reinforcement bracket 11b Flange portion 12 Seat rotation shaft 13 Reclining device 13a Licra body 14 Licra mounting bracket 14a Outer bracket 14b Inner bracket 14c Bolt assembly portion 20 Cushion frame 21 Side Frame 22 Front connection pipe 23 Center connection pipe 24 Pan frame 25 Cushion rotation device 26 Cushion rotation shaft 27 Spiral Spring 28 Leg rotating device 28a Leg rotating shaft 28b Spring member 30 Detachable leg 31 Leg main body 32 Leg connecting part 40 Support base 41 Side base part 42 First base connecting part 43 Second base connecting part 44 Reinforcing base part 45 Holding Member support portion 46 Step portion 50 Leg holding member 51 Side wall portion 52 Bottom wall portion 53 Curl portion 54 Inertial locking device 60 Base cover 61 Front cover 62 Leg housing recess 63 Leg movement restricting portion

Claims (14)

A seat body having a seat back serving as a backrest and a seat cushion coupled to the seat back and serving as a seat;
A vehicle seat capable of storing the seat body in a storage position formed on a vehicle body floor,
Left and right lower rails mounted on the vehicle body floor and extending in the front-rear direction of the seat; slidably attached along the lower rails; left and right upper rails supporting the seat body;
A vehicle seat, comprising: a reclining device disposed at a position overlapping the upper rail in the vertical direction and rotatably connecting the seat body to the vehicle body floor side. The seat body can be stored at a position lower than the vehicle body floor,
A support base mounted on the left and right upper rails and supporting the seat body;
A seat rotation shaft attached to the support base and connected to one end side of the seat body in the longitudinal direction of the seat as a rotation shaft of the reclining device;
2. The vehicle seat according to claim 1, comprising: an upper end portion attached to the other end side of the seat body, and a lower end portion detachably supported on the support base. .   The vehicle seat according to claim 2, wherein the reclining device is disposed on an outer side of the upper rail in a seat width direction. A rail lock device mounted between the left and right upper rails and capable of locking the upper rail while being supported by the lower rail;
4. The vehicle seat according to claim 2, wherein the reclining device is disposed at a position overlapping the rail lock device in a seat longitudinal direction. A buckle is disposed outside the seat body in the seat width direction and for mounting a tongue plate provided on the seat belt.
The vehicle seat according to any one of claims 2 to 4, wherein the reclining device and the buckle are disposed at positions opposite to each other with the seat body interposed therebetween. A floor connecting member for connecting the lower rail on the vehicle body floor;
The vehicle seat according to any one of claims 2 to 5, wherein the floor connecting member is disposed at a position overlapping with the reclining device in a seat width direction.   The vehicle seat according to claim 6, wherein the floor connecting member is disposed rearward of the reclining device.   The vehicle seat according to claim 6 or 7, wherein at least one of the floor connecting members is disposed in front of the seat with respect to the reclining device. A connecting bracket that connects the lower end of the seat back and the reclining device;
The connecting bracket is
It is attached to the outside in the seat width direction than the reclining device,
The vehicle seat according to any one of claims 2 to 8, wherein the reclining device is disposed at a position sandwiching the reclining device with the support base. The connection bracket is provided on the left and right side portions of the seat back,
The one of the left and right connecting brackets is disposed outside the upper rail in the seat width direction, and the other is disposed inside the seat width direction from the upper rail. Vehicle seat. The reclining device is attached to the outer surface of the support base in the seat width direction via a lycra mounting bracket,
11. The lycra mounting bracket is provided with at least two assembling portions that are disposed so as to sandwich the reclining device in the seat front-rear direction and are assembled to the support base. The vehicle seat according to any one of claims. The support base includes a base main body portion laid on the left and right upper rails, and a reinforcing base portion attached above the base main body portion and forming a closed cross-sectional structure with the base main body portion,
The vehicle seat according to claim 11, wherein a portion of the support base to which the lycra mounting bracket is assembled has the closed cross-sectional structure.   The vehicle seat according to claim 12, wherein a portion of the support base having the closed cross-sectional structure is recessed on a side opposite to the detachable leg side at a position facing the detachable leg. .   The vehicle seat according to any one of claims 1 to 13, wherein the reclining device is disposed at a substantially central portion of the upper rail in a longitudinal direction of the seat.

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