JP6524198B2 - Vehicle seat - Google Patents

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 lower position than a vehicle body floor.

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

The vehicle seat described in Patent Document 1 is mounted on a vehicle floor, and has a mounting shaft for pivotally supporting the seat back, and a holding groove whose upper end supports the front portion of the seat cushion and whose lower end is fixed to the storage floor And a leg member rotatably held on the housing.
During the storage operation of the seat body, the seatback rotates so as to move the seat cushion to the storage floor with respect to the vehicle body floor, and the leg member rotates around the holding groove in conjunction with the seatback. It can be stored in the storage floor.
Further, the vehicle seat is configured to be able to switch from the use state in which the passenger can be seated to the tip-up state in which the seat cushion is flipped up after disengaging the leg member from the holding groove.

JP, 2009-67309, A

By the way, in the seat which can store a seat body on a storage floor like patent documents 1, since a leg member which supports a seat cushion is connected between a seat cushion and a storage floor, it becomes a long member It was
Then, when the leg member is attached to and detached from the holding groove in the switching operation between the use state and the tip-up state, the full length of the leg member is long, and the swing width of the detached leg member becomes large. It has been difficult to reattach the member to the holding groove.
In particular, when the sheet main body is changed in a somewhat disorderly manner, the moving leg member and a part of the sheet come into contact with each other to affect the movement of the leg member, thereby causing the leg member to hold the groove. There was a risk that the operation of re-attaching the
Therefore, there has been a demand for a vehicle seat that can be easily switched from the use state.

Further, in the seat as disclosed in Patent Document 1, not only the vehicle floor surface on which the seat body is installed but also a leg member for rotatably supporting the seat back and a component such as a holding groove are attached to the storage floor surface. It had a complicated storage structure to store the seat body.
Therefore, a vehicle seat that can be stored on the storage floor with a simple structure has been desired. In addition, a vehicle seat capable of securing a large storage space has been desired.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a vehicle seat which 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.
Another object of the present invention is to provide a vehicle seat capable of securing a wide storage space without arranging the components of the storage structure on the storage floor surface.

According to the vehicle seat of the present invention, the subject includes a seat body having a seatback serving as a backrest portion and a seat cushion serving as a seating portion, and a use state in which an occupant can sit, and the seat body It is a vehicle seat which can be switched between the movement state moved from the use state, wherein the vehicle seat includes a rail device which makes the seat body movable, and a base cover which covers the rail device. A cushion cover that covers a part of the seat cushion from the outside in the seat left-right direction, and when the seat body is moved between the use state and the movement state, the cushion contact portion of the seat cushion , contact the base abutment portion of the base cover, when the seat body is in the use state, the base abutment from the cushion cover Is arranged below the seat up-down direction, the cushion abutting portion is solved by, disposed above the sheet vertically from the upper end of the base cover.

With this configuration, the seat cushion can be guided by the base cover when the seat body is moved between the use state and the movement state, and switching between the use state and the movement state with a simple configuration be able to.

At this time, the sheet body is configured to be moved to the storage floor surface of the vehicle body floor, and the movement state is a state in which the sheet body is moved to the storage floor surface, and the sheet body is used in the use state Preferably, the front portion of the seat cushion abuts against the storage floor surface when moving from the seat to the moving state.

Preferably, the base cover includes a recess, and the base contact portion is disposed at one end of the upper surface of the base cover in the seat left-right direction, and is disposed outside the recess in the seat left-right direction. It is.

Further, it is preferable that the base contact portion has a convex curved surface protruding toward the seat cushion , and be disposed on the front side of the recess .

The base cover includes a front cover portion and a rear cover portion, and the front cover portion and the rear cover portion are snap fit-coupled to each other , and the snap fit is performed when the sheet main body is in the use state. It is preferable that the portion to be coupled is disposed at a position overlapping the cushion cover in the seat vertical direction .

Preferably, the base cover includes a front cover and a rear cover, and the front cover includes the recess.

Furthermore, it is preferable that a reinforcing rib is formed on the back surface of the base contact portion, and the reinforcing rib is provided longer in the seat left-right direction than the length of the base contact portion in the seat left-right direction .
By forming the reinforcing rib on the back surface of the base contact portion, it is possible to improve the support rigidity in the portion of the base cover that requires the support rigidity in order to contact with other components.

According to the present invention, when the seat body is moved between the use state and the movement state, the seat cushion can be guided by the base cover, and the use state and the movement state can be switched with a simple structure. .
Further, according to the present invention, it is possible to improve the support rigidity in the portion of the base cover that requires the support rigidity in order to make contact with other components.

It is a perspective view of a vehicular seat concerning this embodiment. It is a perspective view of a seat frame used as frame of a vehicular seat. It is a perspective view of a seat frame, and is a partially expanded view. It is a perspective view of a base cover which protects a support base of a vehicular seat. It is an exploded perspective view of a base cover. It is a figure explaining the state where the cushion contact part of the vehicular seat was in contact with the base contact part. It is a figure explaining the state where the attachment or detachment leg of a vehicular seat passes above the leg movement control part. It is a side view of a vehicular seat, and is a figure explaining operation which moves to a storing state from a use condition. It is a side view of a vehicular seat, and is a figure explaining operation which moves to a storing state. It is a side view of a vehicular seat, and is a figure explaining operation which moves to a tip up state from a storing state. It is a side view of a vehicular seat, and is a figure explaining operation which returns to a use state from a tip up state. It is a side view of a vehicular seat concerning the 2nd example, and is a figure explaining operation which returns to a state of use from a storing state directly. It is a side view of a vehicular seat concerning the 2nd example, and is a figure explaining operation which returns to a use condition directly. It is a side view of a vehicular seat concerning the 2nd example, and is a figure explaining operation which returns to a use condition directly.

The present embodiment is a vehicle seat capable of storing the seat body on the storage floor, and the seat pivot shaft connected so that the seat body can be pivoted, the upper end is attached to the seat body, and the lower end is And a detachable leg which is detachably held by a leg holding member on the vehicle floor, and the leg guide means abuts on the cushion abutting portion when the seat body is moved from the stored state to the used state. Invention of a vehicle seat characterized in that the detachable leg moving together with the seat body is guided so as to pass above the leg movement inhibiting portion which is a part of the support base by bringing the seat into contact with the portion in advance. It is about
The side where the occupant sits on the seat back of the vehicle seat is the seat front side.

The vehicle seat S of the present embodiment is, for example, a rear seat corresponding to a rear seat of a vehicle. In a vehicle provided with three rows of seats in the longitudinal direction of the vehicle, it can also be used as a middle seat in the second row.
As shown in FIG. 1, the vehicle seat S is mounted on a seat body including a seat back 1, a seat cushion 2, and a headrest 3, and on a vehicle floor, and supports the seat body movably in the front-rear direction. Left and right rail devices 4, a support base 40 mounted on the rail devices 4, a detachable leg 30 mounted between the seat cushion 2 and the support base 40 and supporting the seat cushion 2 from below, and the support base 40 And a leg holding member 50 detachably mounted on the lower end of the detachable leg 30.
In addition, as shown in FIG. 1, the vehicle seat S is accompanied by the base cover 60 covering the support base 40 from above, the cushion cover 70 covering a part of the seat cushion 2 from the left and right outside, and the movement of the seat body. And a leg guide means for guiding the detachable leg 30 separated from the leg holding member 50.
Furthermore, as shown in FIG. 2, the vehicle seat S is connected to the support base 40 with respect to the reclining device 13 that rotatably connects the seat back 1 about the seat rotation shaft 12 and the seat back 1. A cushion rotation device 25 rotatably connects the seat cushion 2 and a leg rotation device 28 rotatably connects the mounting leg 30 to the seat cushion 2.
As shown in FIG. 8, on the seat front side of the vehicle seat S, a concave storage floor formed at a lower position than the vehicle body floor is provided.

The vehicle seat S can be arranged in three forms: a use state where an occupant can sit, a storage state where the seat body is stored in the storage floor, and a tip-up state where the seat body is flipped up. Sheet.
Specifically, when the occupant pulls the control lever (not shown) from the use state shown in FIG. 8A, the vehicle seat S is folded forward and the seat body is stored in the storage floor. Switch to the storage state shown in 9 (c). Also, from the stored state, the occupant manually raises the seat body upward to switch to the tip-up state shown in FIG. Further, from the tip-up state, when the occupant pulls on the detachable leg 30 functioning as the operation lever, the seat cushion 2 rotates below the seat 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 that supports the back of the occupant from the rear, and the cushion pad 1a is placed on the back frame 10 shown in FIG. It is covered and constituted.
The seat cushion 2 is a seat that supports the occupant from below, and the cushion pad 2a is placed on the cushion frame 20 shown in FIG. 2 as a skeleton, and covered with the skin 2b from above the cushion pad 2a It is configured.
The headrest 3 is a head that supports the head of the occupant from the rear, and is configured by mounting a cushion pad 3a on a pillar (not shown) as a core material and covering the cushion pad 3a with a skin 3b.

The rail device 4 is disposed between the seat body and the vehicle body floor in the vertical direction, and is fixed to the vehicle body floor as shown in FIG. 2, and is fixed to the left and right lower rails 4a extending in the seat longitudinal direction. It is comprised from the upper rail 4b on either side supported so that sliding is possible along it.
A support base 40 is mounted on the upper surfaces of the left and right upper rails 4b.

The back frame 10 is formed of a substantially rectangular frame-like body serving as a framework of the seat back 1 and is connected to the support base 40 at the left and right outer surfaces of the back frame 10 as shown in FIG. Left and right connection brackets 11 are attached.
The connection bracket 11 is formed of a sheet metal member extending in the vertical direction and formed in a substantially bow shape as viewed from the side of the seat, and the upper end of the connection bracket 11 is attached to the back frame 10 and the lower end is supported. It is attached to the base 40.

The upper end portion of the connection bracket 11 is sandwiched between the back frame 10 and the cushion frame 20 in the seat left-right direction.
The seat pivot shaft 12 pivotally supported by the support base 40 in the left-right direction is provided at the lower end portion of the left connection bracket 11, and the back frame relative to the support base 40 is provided at the lower end portion of the right connection bracket 11. A reclining device 13 for rotatably connecting the 10 is attached.

The reclining device 13 is a known device, and as shown in FIG. 2, is disposed on the left and right inner side surfaces of the connection bracket 11 to suppress interference with the cushion frame 20 in the left and right direction.
The reclining device 13 mainly includes a seat rotation shaft 12 and a spiral spring 14 that rotates the back frame 10 forward about the seat rotation shaft 12 to urge the storage frame.
The sheet rotation shaft 12 is pivotally supported on the back frame 10 side and the support base 40 side in the left-right direction, one end of the spiral spring 14 is locked on the back frame 10 side, and the other end is the support base 40. It is locked to the side.
The reclining device 13 is switchable to a locked state for locking the pivoting operation of the back frame 10, locks the back frame 10 in an upright state, and releases the locked state by operating an operation lever (not shown). The back frame 10 can be rotated forward by the biasing force of the spiral spring 14 and folded toward the support base 40 side.

The cushion frame 20 is formed of a substantially rectangular frame body serving as a framework of the seat cushion 2 and, as shown in FIG. 2, the left and right side frames 21 disposed on the left and right sides and the front portion of each side frame 21 A front connection pipe 22 connecting the two, a central connection pipe 23 connecting the substantially central portions of the side frames in the front-rear direction, a pan frame 24 as a plate-like frame connecting the front connection pipe 22 and the central connection pipe 23; Mainly composed of
The central connection pipe 23 corresponds to a connection frame.

  The side frame 21 is formed of a sheet metal member extending in the longitudinal direction of the seat, and the front portion thereof is connected to the front connection pipe 22. The cushion frame 20 is rotatably connected to the back frame 10 at the rear portion thereof. The cushion rotation device 25 is attached.

The cushion rotation device 25 is made of a known device, and as shown in FIG. 2, a cushion rotation shaft 26 and a spiral spring 27 that biases the cushion frame 20 downward with the cushion rotation shaft 26 as a center. Is equipped.
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, one end of the spiral spring 27 is locked on the back frame 10 side, and the other end is the cushion frame 20 It is locked to the side.
The cushion pivoting device 25 can be switched to a locked state in which the pivoting motion of the cushion frame 20 is locked.
As shown in FIG. 9C, when the seat body is stored in the storage floor, specifically, when the back frame 10 is folded to the cushion frame 20 side, as shown in FIG. The pivoting motion of the cushion frame 20 is locked. Then, as shown in FIG. 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 biasing force of the spiral spring 27. It can be rotated.

As shown in FIG. 2, the front connecting pipe 22 is a substantially U-shaped pipe member, and on the left and right inner side surfaces thereof, a leg rotating device for rotatably connecting the detachable leg 30 to the cushion frame 20 28 is attached.
The leg pivoting device 28 is a spring member that biases the leg pivot shaft 28 a and the detachable leg 30 on the opposite side of the cushion frame 20 with the leg pivot shaft 28 a as a center, in other words, a spring away from the cushion frame 20. And 28b.
The leg pivot shaft 28a is pivotally supported by the front connection pipe 22 and the upper end of the detachable leg 30 in the left-right direction, one end of the spring member 28b is locked to the cushion frame 20 side, and the other end is It is locked on the detachable leg 30 side.
The leg pivoting device 28 is switchable to a locked state for locking the pivoting motion of the detachable leg 30, and as shown in FIG. 9A, the detachable leg 30 is detached from the leg holding member 50, and the cushion frame When stored on the 20 side, the pivotal movement of the detachable leg 30 is locked. Then, as shown in FIG. 11 (a), 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. 2, the detachable leg 30 is a substantially U-shaped pipe member for supporting the seat cushion 2, and the leg main body portion 31 disposed on the left and right sides and the lower end portion of each leg main body portion 31 And a leg connecting portion 32 to be connected.
The upper end portion of the leg body portion 31 is connected to the left and right inner side surfaces of the cushion frame 20 and to the substantially central portion in the longitudinal direction, and the substantially central portion in the lateral direction of the leg connecting portion 32 is attached to and detached from the leg holding member 50 It is held possible.
The upper end portion of the detachable leg 30 projects forward from the lower end portion of the detachable leg 30 in the seat, 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 for supporting the seat body, and as shown in FIG. 3, the left and right side base portions 41 disposed along the upper rails 4b on the left and right sides, and the front portions of the side base portions 41. A first base connecting portion 42 to be connected, a second base connecting portion 43 connecting substantially central portions of the side base portions 41, left and right reinforcing base portions 44 attached to upper surfaces of the side base portions 41, and And a holding member supporting portion 45 which connects the base connecting portion 42 and the second base connecting portion 43 and supports the leg holding member 50.

The side base portion 41 is formed of a substantially crank-shaped sheet metal member elongated in the front-rear direction, and as shown in FIG. 3, a connecting wall portion 41a connected to the upper surface of the upper rail 4b, and left and right inner end portions of the connecting wall portion 41a. And an outer wall 41c bent upward from the left and right outer ends of the connecting wall 41a.
Further, a substantially semicircular notch 41 d is formed in a portion of the left side base portion 41 facing the seat rotation shaft 12 when viewed from the seat side surface side. It is easy to assemble from the side of the seat.

As shown in FIG. 3, the first base connecting portion 42 and the second base connecting portion 43 are substantially circular pipe members extending in the left-right direction, and are disposed with a predetermined distance in the front-rear direction. .
As shown in FIG. 3, the reinforcing base portion 44 is formed of a substantially crank-shaped sheet metal member elongated in the front-rear direction, and is connected to the upper surface of the side base portion 41. It comprises an inner side wall 44b bent downward from the end and an outer wall 44c bent upward from the left and right outer ends of the connecting wall 44a.
The left and right end portions of each of the first base connecting portion 42 and the second base connecting portion 43 are connected so as to be sandwiched between the side base portion 41 and the reinforcing base portion 44, as shown in FIG.
The reinforcing base portion 44 overlaps the side base portion 41 at the top and bottom to form a closed cross-sectional structure, and the support base 40 has an intermediate shape.

The holding member supporting portion 45 is a curved sheet metal member for supporting the leg holding member 50 as shown in FIG. 3 and extends in the longitudinal direction of the sheet and is lower than the front portion and the rear portion at a substantially central portion thereof. A bent portion 45a is formed.
The front portion of the holding member support 45 is attached to the first base connection portion 42, and the rear portion of the holding member support 45 is attached to the second base connection portion 43.
The leg holding member 50 is attached to the upper surface of the bent portion 45a.

The leg holding member 50 is a substantially U-shaped clip member for holding the detachable leg 30 detachably, and as shown in FIG. 3, a bottom for connecting the pair of side wall portions 51 and the lower end portion of each side wall portion 51 And a wall 52.
Each side wall 51 is bent in the direction approaching each other from the lower end to the upper end, in other words, it is bent in the inside direction of the opening so as to narrow the opening of the leg holding member 50. In the portion, a curled portion 53 which is bent in the outward direction of the opening is formed.
The bottom wall portion 52 has a curved shape and is attached along the bent portion 45 a of the holding member support portion 45. If it explains in detail, bottom wall 52 is provided with a cut and raised part (not shown) which cut and raised the part, and a cut and raised part is latched by a latch groove (not shown) formed in bent part 45a. It is fixed by.

The leg holding member 50 is supported by the holding member support 45 at a position inclined forward at a predetermined inclination angle with respect to the horizontal surface. In other words, the leg holding member 50 is supported by the holding member support 45 at a position where its opening is directed obliquely upward and forward.
At a portion adjacent to the leg holding member 50, an inertial lock device 54 is disposed which locks the leg connecting portion 32 at the lower end portion of the detachable leg 30 while being held by the leg holding member 50 at the time of a rear collision of the vehicle.
The inertial lock device 54 is a known device, and as shown in FIG. 3, is attached to the support base 40 and disposed between the first base connecting portion 42 and the second base connecting portion 43 in the front-rear direction, Moreover, it arrange | positions in the position which overlaps with the leg holding member 50 in the front-back direction.

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 or FIG. 5, it is disposed behind the front cover 61 and the front cover 61 disposed on the seat front side. And a rear cover portion 68. The front cover portion 61 and the rear cover portion 68 are snap fit-coupled.
As shown in FIG. 4, the front cover portion 61 is disposed rearward of the leg accommodating recess 62 for accommodating the detachable leg 30 and the leg accommodating recess 62, and the detachable leg 30 moves rearward relative to the leg accommodating recess 62. A leg movement restricting portion 63 which restricts movement and a base contact portion 64 which is provided in front of the seat with respect to the leg accommodation concave portion 62 and which can be in contact with a part of the seat cushion 2 are mainly provided.

The leg accommodation recess 62 is 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 formed as an elongated body extending in the left-right direction.
The leg accommodation recess 62 is composed of a pair of front and rear side walls 62a, a pair of left and right side walls 62b, and a bottom wall 62c connecting the lower ends of the side walls 62a and 62b. It is disposed at a position directed diagonally forward and upward.
A substantially square through hole is formed in the central portion in the left-right direction of each of the front and rear side wall portions 62a of the leg accommodation recess 62, and as shown in FIG. The pair of side wall portions 51 and the curled portion 53 constituting the member 50 are exposed to the outside through the through holes.
Further, in the rear side wall portion 62a and the bottom wall portion 62c of the leg accommodation concave portion 62, through holes elongated in the vertical direction are continuously formed, and the inertia lock device 54 is formed from the back surface side of the base cover 60. Some are exposed to the outside through the through holes.

As shown in FIG. 4, the leg movement restricting portion 63 comprises a portion projecting from the substantially central portion of the upper surface of the base cover 60 toward the seat front side, and is formed continuously from the leg accommodation recess 62 to the seat rear side It is provided as a long body extending in the left-right direction of the seat.
The leg movement restricting portion 63 is formed so as to be wider in the front-rear direction as it goes from the lower end side to the upper end side, and the upper end of the leg movement restricting portion 63 is a projecting portion projecting upward from the upper surface of the base cover 60 63a is formed. The protruding portion 63a further protrudes toward the front of the seat.
With the above configuration, the leg movement restricting portion 63 can restrict the backward movement of the removable leg 30 when the removable leg 30 is accommodated in the leg accommodating recess 62, and can guide the removable leg 30 to the leg accommodating recess 62 side. .

The base contact portion 64 is a long member extending in the front-rear direction of the seat, and is a long member extending in the longitudinal direction of the seat, and is relatively narrow in the left-right direction of the seat. It is formed as a shape.
Further, the base contact portion 64 is disposed at one end portion in the left-right direction of the upper surface of the base cover 60, and is formed so as to slightly protrude toward the front of the seat.
The base contact portion 64 is disposed at a position capable of coming into contact with a cushion contact portion 71 described later provided on the cushion cover 70 when the seat body moves between the storage state and the use state. It has a substantially convex curved surface protruding toward the cushion cover 70 side.

  In the base cover 60, as shown in FIG. 5, reinforcing ribs 65 having a predetermined shape are formed on the back surfaces of the leg accommodation recess 62, the leg movement restricting portion 63, and the base contact portion 64 on the support base 40 side. There is. Therefore, in the portion of the base cover 60 that requires supporting rigidity in order to contact other components, the supporting rigidity is improved.

As shown in FIG. 1, the cushion cover 70 is made of a substantially U-shaped resin molded product that covers the left and right side frames 21 shown in FIG. Is located in
As shown in FIG. 6, a cushion contact portion 71 protruding toward the base cover 60 is integrally formed on the bottom surface of the cushion cover 70.

The cushion contact portion 71 has a substantially convex curved surface protruding toward the base cover 60, and is disposed at a position overlapping the base contact portion 64 in the left-right direction of the seat.
Further, the cushion contact portion 71 is disposed at a position corresponding to a portion of the side frame 21 shown in FIG. 2 to which the central connection pipe 23 is connected.
When the cushion contact portion 71 abuts on the base contact portion 64 as shown in FIG. 6 when the seat body moves between the stored state and the use state, the seat cushion 2 rides on the base cover 60. It will be

<Leg guide means>
The leg guide means does not bring the detachable leg 30, which moves together with the seat body, into contact with the leg movement inhibiting portion which is a part of the vehicle seat S when the seat body moves between the storage state and the use state. It is a guide.
In the leg guide means of the present embodiment, when the seat body is moved from the storage state side shown in FIG. 6 to the use state side shown in FIG. As shown in FIG. 7, the detachable leg 30 is mounted on the base cover 60 by bringing the cushion contact portion 71 disposed at the rear into contact with the base contact portion 64 disposed at the front end of the seat of the base cover 60 in advance. It is guided to pass above the leg movement inhibiting portion 66 provided on the front surface.

For example, while the sheet body is being moved from the use state to the storage state, a move operation may be performed to return the sheet body to the use state again.
When the occupant tries to return the seat body relatively quickly at the time of such a moving operation, conventionally, there has been a possibility that the detachable leg 30 can not be reattached to the leg holding member 50.
Specifically, while the sheet body is being moved from the storage state side shown in FIG. 6 to the use state side shown in FIG. 7, the detachable leg 30 contacts the leg movement inhibiting portion 66, and the detachable leg 30 is the seat There is a possibility that the removable leg 30 can not be reinstalled by jumping over with the cushion 2 and the removable leg 30 gets over the leg holding member 50.
However, in the present embodiment, the cushion abutting portion 71 abuts on the base abutting portion 64 while the sheet main body is moved from the storage state side shown in FIG. 6 to the use state side shown in FIG. .
Therefore, by bringing the cushion contact portion 71 into contact with the base contact portion 64 in advance, the seat cushion 2 is in a state where the seat cushion 2 rides on the base cover 60, and the movement path of the detachable leg 30 is stabilized. It is guided to pass above the leg movement inhibiting portion 66 so that it can be re-mounted on the leg holding member 50 without contacting the leg movement inhibiting portion 66.

<Sheet storage operation>
Next, an operation of moving the sheet main body from the use state to the storage state will be described based on FIGS. 8 and 9. In FIGS. 8 and 9, the reclining device 13, the cushion rotating device 25, and the leg rotating device 28 indicate the locked state when illustrated by the black circle, and the unlocked state when illustrated by the white circle. It shall be shown. The same applies to FIG. 10 to FIG.

  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, locked in the upright state by the reclining device 13, and connected to the seat back 1 The cushion 2 is supported from below by the detachable leg 30 held by the leg holding member 50.

When moving the vehicle seat S from the use state to the storage state, for example, an operation lever (not shown) provided on the upper surface of the seat back 1 is operated.
When the occupant operates the operation lever, as shown in FIG. 8B, the locked state of the reclining device 13 is released, and the seat back 1 moves the seat cushion 2 to the storage floor by the biasing force of the spiral spring 14. The sheet front side rotation is started around the sheet rotation shaft 12 so as to move the sheet.
The detachable leg 30 starts to rotate toward the seat cushion 2 with respect to the seat cushion 2 around the leg pivot shaft 28 a in conjunction with the rotation of the seat back 1. At this time, since the detachable leg 30 is in a stretched state between the seat cushion 2 and the vehicle body floor side, the seat cushion 2 and the seat back 1 can be moved stably.
A known cable (not shown) is connected between the control lever and the reclining device 13, and the cable is pulled by the operation of the control lever to provide a mechanism for releasing the locked state.

When the seat back 1 reaches a predetermined rotational position as shown in FIG. 9A, the detachable leg 30 is separated from the leg holding member 50. In other words, when the detachable leg 30 reaches the predetermined rotational position in conjunction with the rotation of the seat back 1, it detaches from the leg holding member 50.
The detached detachable leg 30 runs on the upper surface of the base cover 60 and rotates so as to be folded toward the seat cushion 2 about the leg pivot shaft 28a against the biasing force of the spring member 28b. Then, when the detachable leg 30 reaches a predetermined rotational position, the detachable leg 30 is locked by the leg pivoting device 28 in a state of being stored on the seat cushion 2 side.

Furthermore, as shown in FIG. 9B, when the seat back 1 reaches a predetermined rotational position, the cushion abutting portion 71 abuts on the base abutting portion 64. Then, the front portion of the seat cushion 2 abuts on the storage floor surface earlier than the detachable leg 30.
A sliding member (not shown) that can slide on the storage floor surface is attached to the front portion of the seat cushion 2, and the seat cushion 2 stabilizes the storage floor surface toward the seat front side. It can slide.

By the above-described series of operations, as shown in FIG. 9C, the seat body is stored in the storage floor, and the vehicle seat S is switched to the storage state.
The seat cushion 2 is locked by the cushion rotation 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 disposed at a lower position than the leg holding member 50 in the stored state.

<Sheet tip up operation>
Next, the operation of moving the sheet body from the stored state to the tip-up state will be described based on FIG.
When the vehicle seat S is in the storage state shown in FIG. 10 (a), for example, the occupant manually raises the seat body upward to switch to the tip-up state shown in FIG. 10 (b).
At this time, since the cushion pivoting device 25 locks the pivoting motion of the seat cushion 2, the seat cushion 2 can also be integrally lifted upward by raising the seat back 1 upward.
By sliding the upper rail 4b rearward with respect to the lower rail 4a in the tip-up state, a wider cargo space can be secured in front of the seat.

  When the vehicle seat S is switched to the tip-up state shown in FIG. 10 (b), the seat back 1 returns to the same position as the position in use and is locked by the reclining device 13 in the upright state.

<Sheet return operation>
Next, an operation of moving the sheet main body from the tip-up state to the use state will be described based on FIG.
When moving the vehicle seat S from the tip-up state to the use state, as shown in FIG. 11A, for example, the detachable leg 30 functioning as an operation lever is operated.
The lock state of the cushion turning device 25 and the leg turning device 28 is obtained by pulling the mounting leg 30 upward around the leg turning shaft 28a, in other words, pulling it away from the seat cushion 2 side. It is released.
A known cable (not shown) is connected between the detachable leg 30 and the cushion rotation device 25. The cable is pulled by the operation of the detachable leg 30 to release the locked state. There is.

The seat cushion 2 rotates downward with respect to the seat back 1 by the biasing force of the spiral spring 27 as shown in FIG.
The detachable leg 30 is rotated about the leg pivot shaft 28 a to a position where it can be attached to the leg holding member 50 by the biasing force of the spring member 28 b with the release of the leg pivoting device 28 and attached to the leg holding member 50. It will be done.
At this time, the removable leg 30 is moved 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. You will come to
By the above-described series of operations, the vehicle seat S returns to the use state shown in FIG.

Second Embodiment of Vehicle Seat
Next, a second embodiment of the vehicle seat will be described based on FIGS. 12 to 14.
In the following description, the contents overlapping with the vehicle seat S described above will not be described.
The configuration of the vehicle seat S2 according to the second embodiment is different in that the lock-off device 80 capable of switching the cushion rotation device 25 from the locked state to the unlocked state is included.
The vehicle seat S2 is a 1-motion type vehicle seat that can directly switch the seat body from the storage state to the use state, as compared to the vehicle seat S described above.

The lock-off device 80 is a known switching device, is attached to the rear end of the seat cushion 2 and is disposed at a position overlapping the cushion contact portion 71 in the seat longitudinal direction.
Specifically, the lock-off device 80 is provided on the right side frame 21 of the seat cushion 2, and the cushion contact portion 71 is provided on the left side frame 21.
The lock-off device 80 includes a lock-off lever 81 that protrudes from the rear end of the seat of the seat cushion 2 so as to partially protrude rearward of the seat and switches the cushion rotation device 25.

The lock-off lever 81 is attached at a position where it can abut on a lever contact portion 67 on the seat front surface of the base cover 60.
When the seat main body is moved from the use state to the storage state shown in FIG. 12A, the lock-off lever 81 moving with the seat cushion 2 abuts on the lever contact portion 67 of the base cover 60, and the seat front is further forward. The lock-off device 80 can switch the cushion rotation device 25 from the locked state to the unlocked state by being pressed to the side and rotating around the lock-off lever rotation shaft (not shown).

Next, an operation of directly returning the sheet body from the storage state to the use state will be described based on FIGS. 12 to 14.
First, when the vehicle seat S2 is in the stored state shown in FIG. 12 (a), the lock-off lever 81 abuts on the lever contact portion 67 of the base cover 60, and further the lever contact portion 67 It is in the pressed state. As a result, the lock-off device 80 releases the lock state of the cushion rotation device 25.
When the occupant manually raises the seat body upward, the lock of the cushion rotation device 25 is released from the seat cushion 2, so that the seat cushion 2 is positioned below the seat back 1 by its own weight and the biasing force of the spiral spring 27. It will rotate to

When the vehicle seat S2 reaches the predetermined position shown in FIG. 12 (b), the cushion abutting portion 71 abuts on the base abutting portion 64.
By bringing the cushion contact portion 71 into contact with the base contact portion 64 in advance, as shown in FIG. 13, the detachable leg 30 is guided to pass above the leg movement inhibiting portion 66.
More specifically, the cushion abutting portion 71 abuts on the base abutting portion 64 until the detachable leg 30 passes at least above the leg movement inhibiting portion 66. By configuring in this manner, the detachable leg 30 can be guided well.

The moving attachment / detachment leg 30 abuts on the leg movement restricting portion 63 as shown in FIG. 14A, and the movement of the leg is restricted toward the leg holding member 50 by the leg movement restricting portion 63.
At this time, the lock of the leg turning device 28 is automatically released by being guided so that the detachable leg 30 abuts on the leg movement restricting portion 63 and is pulled downward.
Then, the detachable leg 30 is attached to the leg holding member 50 again.
By the above series of operations, the vehicle seat S2 returns to the use state shown in FIG. 14 (b).

  With the above configuration, when the seat body is moved directly from the storage state to the use state, the leg guide means contacts the detachable leg 30 moving with the seat body to the leg movement inhibiting portion 66 which is a part of the vehicle seat S2. It can be guided so as not to

<Other Embodiments>
In the above embodiment, the storage floor is formed in front of the vehicle seat S. However, the storage floor may be formed in the rear of the vehicle seat S without being limited thereto.
In that case, it is desirable that the positional relationship between the seat pivot shaft 12 and the detachable leg 30 in the longitudinal direction of the seat and the positional relationship between the detachable leg 30 and the leg movement restricting portion 63 be opposite to each other.

  In the above embodiment, the movement state of the sheet main body is not limited to the storage state, and may be applied to the tip-up state or the like of this embodiment.

In the above embodiment, the leg guide means guides the detachable leg 30 so as not to contact the leg movement inhibiting portion 66 when moving the seat body from the stored state to the used state, but is limited thereto It is possible to change it as appropriate.
That is, when the seat body is switched between the use state and the movement state in which the seat body is moved from the use state to the predetermined position, the leg guide means guides the detachable leg 30 so as not to contact the part of the vehicle seat. It should be good. The movement state is not limited to the storage state, and may be applied to a tip-up state or the like.

In the above embodiment, when the removable leg 30 is switched from the used state to the stored state, the removable leg 30 rotates rearward with respect to the seat cushion 2 about the leg pivot shaft 28a and is accommodated on the seat cushion 2 side. However, the present invention is not limited to this, and the detachable leg 30 may be configured to be rotated toward the seat front side about the leg pivot shaft 28 a and be accommodated on the seat cushion 2 side.
At this time, it is preferable that the upper end portion of the detachable leg 30 be disposed rearward of the lower end portion of the detachable leg 30 and be inclined upward rearward from the lower end portion of the detachable leg 30 toward the upper end portion of the detachable leg 30. The seat cushion 2 is easily accommodated and rotated.

In the above embodiment, the support base 40 is fixed to the vehicle body floor via the rail device 4, but the invention is not limited to this, and the rail device 4 is not required to be fixed directly to the vehicle body floor. You may.
Further, the seat back 1 and the support base 40 may be directly connected via the sheet rotation shaft 12 without the need for the connection bracket 11.
Furthermore, the seat back 1 may be coupled to the seat pivot shaft 12 fixed on the vehicle floor so that the seat back 1 can be pivoted without the need for the support base 40.

In the above embodiment, it is preferable that one of the contact surfaces of the base contact portion 64 and the cushion contact portion 71 is formed to have a lower coefficient of friction than the other contact surface.
By configuring in this manner, when the base cover 60 and the cushion cover 70 come in contact with each other, it is possible to suppress damage and damage to each other.
Further, it is preferable that the leg movement restricting portion 63 of the base cover 60 is similarly formed to have a relatively low coefficient of friction. With such a configuration, when the detachable leg 30 and the leg movement restricting portion 63 come into contact with each other, it is possible to suppress the damage and the damage to each other.

  Although the said embodiment demonstrated the stowable vehicle seat used for a motor vehicle as a specific example, it is not limited to this, In addition to seats for vehicles, such as a train and a bus, seats for vehicles, such as an airplane and a ship It can also be used as

In the present embodiment, the vehicle seat S according to the present invention has been mainly described.
However, the above embodiment is merely an example for facilitating the understanding of the present invention, and does not limit the present invention. The present invention can be modified and improved without departing from the gist thereof, and the present invention naturally includes the equivalents thereof.
In particular, the shape, arrangement, and configuration of the detachable leg 30, the support base 40, the leg holding member 50, the base cover 60 and the cushion cover 70, and the specific configuration of the leg guide means are described in the above embodiment. What has been described is merely an example and is not intended to limit the present invention.

S, S2 Vehicle seat 1 Seat back 1a, 2a, 3a Cushion pad 1b, 2b, 3b Skin 2 Seat cushion 3 Headrest 4 Rail device 4a Lower rail 4b Upper rail 10 Back frame 11 Connection bracket 12 Seat pivot shaft 13 Reclining device 14 Spiral Spring 20 Cushion frame 21 Side frame 22 Front connection pipe 23 Central connection pipe 24 Pan frame 25 Cushion rotation device 26 Cushion rotation shaft 27 Spiral spring 28 Leg rotation device 28a Leg rotation shaft 28b Spring member 30 Detachable leg 31 Leg body Part 32 Leg connecting part 40 Support base 41 Side base part 41a Connecting wall part 41b Inner side wall part 41c Outer wall part 41d Notched part 42 First base connecting part 43 Second base connecting part 44 Reinforcing base part 44a Connecting wall part 4 b inner side wall portion 44c outer side wall portion 45 holding member support portion 45a bent portion 50 leg holding member 51 side wall portion 52 bottom wall portion 53 curled portion 54 inertia lock device 60 base cover 61 front cover portion 62 leg accommodating recess 62a, 62b side wall portion 62c bottom wall portion 63 leg movement restricting portion 63a protruding portion 64 base contact portion 65 reinforcing rib 66 leg movement inhibiting portion 67 lever contact portion 68 rear cover portion 70 cushion cover 71 cushion contact portion 80 lock off device 81 lock off lever

Claims (7)

A seat body having a seat back serving as a backrest and a seat cushion serving as a seating portion;
A vehicle seat that can be switched between a use state in which an occupant can sit and a movement state in which the seat body is moved from the use state,
The vehicle seat includes a rail device that allows the seat body to move, a base cover that covers the rail device, and a cushion cover that covers a part of the seat cushion from the outside in the left-right direction of the seat .
When moving the seat body between said moving state and the use state, the cushion abutting portion of the seat cushion, come into contact with the base abutment portion of the base cover,
When the seat body is in the use state, the base contact portion is disposed lower than the cushion cover in the seat vertical direction, and the cushion contact portion is in the seat vertical direction than the upper end of the base cover. A vehicle seat characterized in that it is disposed above . The seat body is configured to be moved to a storage floor surface of a vehicle body floor,
The movement state is a state in which the sheet body is moved to the storage floor surface,
The vehicle seat according to claim 1, wherein when moving the seat body from the use state to the movement state, a front portion of the seat cushion abuts against the storage floor surface. The base cover comprises a recess,
The said base contact part is arrange | positioned at the one end part in the sheet left-right direction of the upper surface of the said base cover, It arrange | positions in the sheet left-right direction outer side rather than the said recessed part. Vehicle seat. The base contact portion is to have a curved surface of a convex shape projecting in the seat cushion side, the vehicle seat according to claim 3, it is characterized that is disposed on the front side than the concave portion. The base cover comprises a front cover portion and a rear cover portion.
The front cover portion and the rear cover portion are snap fit-coupled ,
5. The snap fit-joined portion of the seat body according to any one of claims 1 to 4, wherein the seat body is disposed at a position overlapping the cushion cover in the seat vertical direction when the seat body is in the use state. Vehicle seat as described in. The base cover comprises a front cover portion and a rear cover portion.
The front cover portion, a vehicle seat according to claim 3 or 4, characterized in that it comprises the recess. A reinforcing rib is formed on the back surface of the base contact portion ,
The vehicle seat according to any one of claims 1 to 6, wherein the reinforcing rib is provided longer in the seat left-right direction than the length of the base contact portion in the seat left-right direction .

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