JP2020121719A - Vehicle seat - Google Patents

Abstract

To provide a vehicle seat which enables dive-down operation, on which a seat cushion is provided with an ottoman, and which facilitates operation for changing to a dive-down posture with the ottoman positioned at an expansion position.SOLUTION: A vehicle seat S is formed to perform a dive-down operation to displace a seat cushion S1 from a seating position to an oblique front side toward a floor 4 in response to a seat back S2 rotating to the front side. The vehicle seat S includes an ottoman S4 which is provided at the seat cushion S1, and which is displaceable between a first storage position where the ottoman S4 suspends from a front part of the seat cushion S1 and an expansion position where the ottoman S4 extends forward from the front part of the seat cushion S1 in a state where the seat cushion S1 is at the seating position. The ottoman S4 may be displaced to a second storage position where the ottoman S4 does not interfere with the floor 4 when the dive-down operation is performed in a state where the ottoman S4 is at the first storage position.SELECTED DRAWING: Figure 15

Description

The present invention relates to a vehicle seat in which a seat cushion is provided with an ottoman and a dive down operation is possible.

In recent years, many seats for vehicles such as automobiles are provided with various mechanisms or devices for arranging the form of the seat. For example, the seat back is rotatably attached to the upper floor of the floor, the seat cushion is attached so that it can be flipped up to the seat back side, and the seat cushion is flipped up to the seat back side. There is a known vehicle seat in which the seat back can be changed to a dive-down posture in which the seat back is stored in the lower floor portion in front of the upper floor portion by tilting the vehicle forward (Patent Document 1).

Japanese Patent No. 4263628

By the way, if an ottoman is provided on the seat cushion of a vehicle seat that allows dive down, if the dive down operation is performed with the ottoman in the deployed position, the ottoman interferes with the floor and dive down. There is a risk that the operation cannot be performed. Therefore, when it is desired to change the seat to the dive-down posture, it is necessary to move the ottoman to a position where it does not interfere with the floor before performing the dive-down operation, and the operation is complicated.

In view of the above background, the present invention facilitates an operation for changing to a dive-down posture in a state where the ottoman is in the deployed position in a vehicle seat that is capable of a dive-down operation and has an ottoman on the seat cushion. This is an issue.

In order to solve the above problems, a seat back (S2) rotatably attached to a seat base (26) and a seat cushion (S1) rotatably attached to the seat back are provided. A vehicle seat (S) configured to perform a dive-down operation in which the seat cushion is displaced obliquely forward from the seated position toward the floor (4) in response to the operation of rotating the seat back forward. And in the state in which the seat cushion is in the seated position, the seat cushion is displaceable between a first storage position that hangs down from the front portion of the seat cushion and a deployed position that extends forward from the front portion of the seat cushion. The seat cushion further includes an ottoman (S4), and the ottoman has a second storage position that does not interfere with the floor when the dive down operation is performed in the first storage position. A vehicle seat characterized by being obtained. Here, “does not interfere” means that it may come into contact with the floor but does not prevent the dive down operation.

According to this configuration, since the ottoman in the first storage position is displaced to the second storage position that does not prevent the dive down operation during the dive down operation, the operation for displacing the ottoman to the second storage position is performed in advance. The dive-down operation can be performed without the need for an operation to change the seat to the dive-down posture.

Further, in the above invention, the ottoman is provided on the seat cushion so as to be rotatable about an axis extending in a lateral direction, and the dive down operation is performed in the state of being in the first storage position. At this time, it may be configured so as to come into contact with the floor and rotate toward the second storage position by the force received from the floor.

According to this structure, since it is not necessary to provide a mechanism for displacing the ottoman regardless of the dive down operation, the seat can be formed with a simpler structure and at a lower cost.

In the above invention, the second storage position may be set on the bottom surface side of the seat cushion with respect to the first storage position.

With this configuration, it is easy to rotate the ottoman in the first storage position toward the second storage position by the force received from the floor. Therefore, the rotation angle of the first storage position can be set to the vertical direction that is less likely to disturb the occupant or behind the vertical direction.

Further, in the above invention, when the ottoman is at least on the second storage position side with respect to a predetermined rotation angle, the urging force of the urging means (156) to the second storage position side acts. It can be configured to.

With this configuration, when the seat is returned from the dive down state to the use state, the ottoman can be held at the second storage position.

In the above invention, a gap may be formed between the floor and the ottoman in the second storage position in the dive-down posture after the dive-down operation is performed.

According to this configuration, since the foot supporting surface of the ottoman does not contact the floor when the seat performs the dive down operation or is in the dive down posture, it is possible to prevent the foot supporting surface of the ottoman from becoming dirty due to contact with the floor. ..

Further, in the above invention, the ottoman is configured to rotate to the second storage position while slidingly contacting the floor when the dive down operation is performed in the state of being in the first storage position. You can

With this configuration, it is possible to realize a seat in which the ottoman comes into contact with the floor and rotates to the second storage position on the bottom surface side of the seat cushion when the dive down operation is performed, with a simple configuration.

Further, in the above invention, a detent mechanism (165) for holding the ottoman in the first storage position with a moderation feeling may be further provided.

According to this configuration, since the ottoman is held by the detent mechanism at the first storage position, it is possible to prevent the ottoman from swinging during acceleration/deceleration. Further, when the ottoman receives the urging force toward the second storage position side by the urging means, the ottoman can be retained in the first storage position by the detent mechanism.

Further, in the above invention, the detent mechanism may be configured to hold the ottoman with a large holding force in the second storage position so that the ottoman does not rotate downward due to its own weight.

With this configuration, the ottoman can be held at the second storage position even when the seat is not in the dive-down posture. Further, when the seat is returned from the dive down state to the use state, the ottoman can be held in the second storage position.

Further, in the above invention, the ottoman foot supporting surface (171) may have a protrusion (173) formed on the free end side thereof.

With this configuration, when the seat is in the dive-down posture, the foot supporting surface of the Ottoman other than the protruding portion does not contact the floor, so that the dirt on the floor is prevented from adhering to the foot supporting surface other than the protruding portion. it can.

Further, in the above invention, the protrusions (173) may be formed on the left and right ends of the foot supporting surface of the ottoman along the rotation axis side from the free end side.

With this configuration, since the central portion of the foot supporting surface of the ottoman does not come into contact with the floor when the seat is in the dive-down posture, dirt on the floor adheres to the central portion of the foot supporting surface and the central portion is not soiled. It can be prevented.

Further, in the above invention, the left and right protrusions of the ottoman are made of a material having a hardness higher than that of the central portion (174) of the foot supporting surface, and are smooth as compared with the central portion of the foot supporting surface. It can be configured to be formed in.

According to this configuration, since the protruding portion of the ottoman is formed smoother than the central portion of the foot supporting surface, cleaning can be easily performed when the protruding portion is soiled. Also, the protruding part of the ottoman is more likely to come into contact with the floor than the central part of the foot supporting surface, but since it is made of a material having a hardness higher than that of the central part and is formed smoothly, frictional resistance due to contact with the floor is increased. It is possible to prevent the size from becoming large and the protrusion from being worn.

Further, in the above invention, the front end surface (172) on the free end side of the ottoman has a larger friction coefficient with respect to the floor than the portions (173, 171) of the foot supporting surface that contact the floor. Can be

The ottoman in the first storage position, which hangs down from the front portion of the seat cushion, has its front end face in contact with the floor during the dive-down operation. Therefore, with such a configuration, the front end face can reliably receive the force to the second storage position side when it comes into contact with the floor, and the ottoman can be reliably rotated to the second storage position side.

Further, in the above invention, the seat cushion has a pair of left and right cushion side frames (85), and the ottoman is a pair of left and right ottoman sides arranged laterally outside of a front portion of the cushion side frame. It can be configured to have a frame (131).

With this configuration, since the ottoman side frame does not overlap the cushion side frame in the left-right direction, the combined thickness of the seat cushion and the ottoman when the ottoman is in the second storage position can be reduced.

Further, in the above invention, a stand leg (37) is rotatably provided inside the cushion side frame in the left-right direction, and the stand leg is in a storage position along the bottom surface of the seat cushion, and When the ottoman is in the second storage position, the cushion side frame, the ottoman side frame, and the stand leg may be provided at positions that do not overlap each other in plan view.

With this configuration, the thickness of the seat cushion, the ottoman, and the stand leg in the state where the stand leg is in the storage position and the ottoman is in the second storage position can be reduced.

According to the above configuration, in the vehicle seat in which the dive down operation is possible and the seat cushion is provided with the ottoman, it is possible to easily perform the operation of changing to the dive down posture with the ottoman in the deployed position. ..

1 is a perspective view of a vehicle seat according to an embodiment. Perspective view of a seat frame of a vehicle seat Right side view of seat frame of vehicle seat Plan view of the seat base of the vehicle seat Plan view of seat frame of vehicle seat Rear view of seat frame of vehicle seat Perspective view of the vehicle seat seen from the lower front side Schematic cross section of stand base Schematic of reclining mechanism Schematic of tip-up mechanism Ottoman exploded perspective view Schematic of the ottoman angle adjustment mechanism Schematic diagram of the Ottoman detent mechanism Illustration of operation of vehicle seat Illustration of operation of vehicle seat Ottoman perspective view Plan view of the main part of the seat frame when the stand leg and the ottoman are in the storage position Side view of vehicle seat in dive down state A perspective view of an ottoman according to a modification Schematic of the Ottoman detent mechanism of the vehicle seat which concerns on a modification. Operation explanatory drawing of the vehicle seat which concerns on a modification The side view which shows the dive-down state of the vehicle seat which concerns on a modification.

An embodiment of the present invention will be described below with reference to the drawings. In the following description, the left and right are defined based on the person sitting on the seat S. Further, when the directions of the respective parts and the like are described, the seat S is in a seated state as a reference. A common number is attached to a configuration provided in a pair on the left and right, and when specifying the left and right, a left or right character is attached to the name of the configuration.

(overall structure)
As shown in FIG. 1, a vehicle seat S is used as a rear seat (including a second row and a third row) of an automobile, and includes a seat cushion S1, a seat back S2, a headrest S3, and an ottoman (leg rest). ) S4 and.

As also shown in FIG. 2, a seat frame F is built in the seat cushion S1, the seat back S2, the headrest S3, and the ottoman S4. The seat frame F forms a cushion frame F1 that forms the frame of the seat cushion S1, a back frame F2 that forms the frame of the seat back S2, a headrest frame F3 that forms the frame of the headrest S3, and a frame of the ottoman S4. And an ottoman frame F4.

A seat cushion pad P1, a seat back pad P2, a headrest pad P3, and an ottoman pad P4 are provided on the seating surface side of the cushion frame F1, the backrest surface side of the back frame F2, the headrest frame F3, and the supporting surface side of the ottoman frame F4, respectively. Is attached and covered with the skin SK. Each pad P is formed of an elastic cushion material such as polyurethane foam. Each skin SK is formed of synthetic leather or cloth. Covers made of a resin material are attached to the bottom surface side of the cushion frame F1, the back surface side of the back frame F2, and the back surface side of the Ottoman frame F4, and the respective bottom surfaces, back surfaces, and back surfaces are defined by these cover members. May be.

The back frame F2 is attached to the floor 4 of the automobile via the slide mechanism 2 and the reclining mechanism 3. As a result, the back frame F2 is slidable on the floor 4 and rotatable (tilted) with respect to the slide mechanism 2. The cushion frame F1 is rotatably attached to the back frame F2 via the tip-up mechanism 5. The headrest frame F3 is slidably attached to the back frame F2. The ottoman frame F4 is slidably attached to the cushion frame F1. Further, the ottoman frame F4 has an angle adjusting mechanism 6 so that the angle can be adjusted.

As shown in FIG. 3, the floor 4 has a high-level portion 11 on which the slide mechanism 2 is installed, and a low-level portion 12 formed in front of and below the high-level portion 11. A wall 13 extending from the low-level portion 12 to the high-level portion 11 is formed between the low-level portion 12 and the high-level portion 11, and it can be said that the low-level portion 12 forms a recess in the floor 4 when the high-level portion 11 is used as a reference. The surface of the floor 4 is covered with an interior material such as a non-woven fabric manufactured by the needle punch manufacturing method. The lower portion 12 of the floor 4 is covered on the surface with a floor mat installed on the interior material.

As shown in FIGS. 4 to 7, the slide mechanisms 2 are provided in a left-right pair with respect to one sheet S. Each slide mechanism 2 has a lower rail 15, an upper rail 16 displaceably attached to the lower rail 15, and a rail lock member 17 for fixing the upper rail 16 to the lower rail 15. Various known mechanisms can be applied to the slide mechanism 2. The lower rails 15 are arranged in the high-level portion 11 (FIG. 3) of the floor 4 so as to be spaced apart from each other in the left-right direction and extend in the front-rear direction. Each lower rail 15 is joined to the floor 4 by bolt fastening or the like. The upper rail 16 is engaged with the lower rail 15 so as to be slidable in the longitudinal direction.

Each lower rail 15 is formed with a plurality of lock holes (not shown) along the longitudinal direction. The rail lock member 17 is rotatably attached to the upper rail 16 and is engageable with at least one of the plurality of lock holes. The rail lock member 17 restricts the movement of the upper rail 16 and the slide member 21 with respect to the lower rail 15 by engaging with an arbitrary lock hole. The rail lock member 17 is biased toward the side engaging with the lock hole by a spring (not shown) as a biasing means. Therefore, normally, the rail lock member 17 biased by the spring maintains the engagement with the lock hole and the movement of the slide member 21 is restricted. When the rail lock member 17 rotates due to the occupant's operation against the biasing force of the spring, the engagement between the rail lock member 17 and the lock hole is released, and the upper rail 16 can be moved.

Slide members 21 are joined to the left and right upper rails 16, respectively. The left and right slide members 21 are formed by joining a plurality of pressed metal plates by welding or the like. The left and right slide members 21 extend forward and backward on the upper rail 16. The left and right slide members 21 have front ends joined by a slider front member 23, rear ends joined by a slider rear member 24, and middle portions in the front-rear direction joined by a slider intermediate member 25. Each member 23, 24, 25 is formed of a metal pipe, is joined to each slide member 21 by welding, bolt fastening, or the like, and extends in the left-right direction in parallel with each other. As a result, the left and right slide members 21 and each member form a frame-shaped seat base 26. The seat base 26 and the left and right upper rails 16 move integrally with each other with respect to the lower rail 15.

The left and right rail lock members 17 are connected to each other by a link mechanism 28 (FIGS. 5 and 6). The link mechanism 28 can change between a locked state and a released state, and is normally in a locked state by receiving the urging force of a spring urging the rail lock member 17. In the locked state, the link member allows the left and right rail lock members 17 biased by the spring to engage with the lock holes. When the link mechanism 28 changes from the locked state to the released state due to the operation of the occupant, the link mechanism 28 maintains the left and right rail lock members 17 in a state of being disengaged from the lock holes against the biasing force of the spring. As will be described in detail later, the link mechanism 28 has one end of a first rail cable 31 and a second rail cable 32 as a force transmission means locked. The link mechanism 28 is released by being pulled by at least one of the first rail cable 31 and the second rail cable 32.

As shown in FIGS. 4, 6 and 8, a stand base 34 is stretched around the slider front member 23 and the slider middle member 25. The stand base 34 is formed by press-molding a metal plate, and is welded to the center of the slider front member 23 in the left-right direction at the front end and to the center of the slider middle member 25 in the left-right direction at the rear end. Has been done. Support grooves 35 extending in the left-right direction and reaching the left and right ends of the stand base 34 are formed in an upper portion of the stand base 34. The support groove 35 is open upward and frontward. The support groove 35 supports a stand leg 37 described later.

A locking claw 41 is rotatably attached to the stand base 34. The locking claws 41 are projected positions into which the locking claws 41 project from the side portions of the support grooves 35 into the support grooves 35, which are shown by solid lines in FIG. 8 around a rotation axis parallel to the axis of the support grooves 35 (the axis extending in the left-right direction). And a retracted position, which is shown by an imaginary line in FIG. 8, retracted to the outside of the support groove 35. A torsion spring 42 as an urging means is interposed between the stand base 34 and the locking claw 41, and the locking claw 41 is urged to the projecting position. The locking claw 41 locks the lateral member 94 of the stand leg 37, which will be described later, at the thrust position, and prevents the lateral member 94 from being detached from the support groove 35. The outer portion of the locking claw 41, that is, the portion facing the opening end side of the support groove 35 when the locking claw 41 is in the projecting position is formed as an inclined surface.

As will be described later in detail, one end of a locking claw cable 43 as a force transmitting means is locked to the locking claw 41. The locking claw 41 is rotated from the thrust position to the retracted position by pulling the locking claw cable 43.

As shown in FIG. 2, FIG. 5 and FIG. 6, the back frame F2 includes a pipe frame 45 formed in a vertically long rectangular frame shape and welded to the lower portions of the left and right side portions of the pipe frame 45 extending vertically. And the left and right backside frames 46 joined by. The left and right backside frames 46 are formed by pressing a metal plate. The left and right backside frames 46 have concave surfaces that are curved so as to embrace the outer surfaces of the lower portions of the left and right side portions of the pipe frame 45, and are joined to the left and right side portions of the pipe frame 45 by welding or the like. There is. The lower portions of the left and right backside frames 46 extend below the lower ends of the left and right side portions. Further, the left and right backside frames 46 partially extend to the lower side of the pipe frame 45 and are joined by welding or the like. A reinforcing plate 47 joined by welding or the like is bridged between the left and right backside frames 46 and the lower side of the pipe frame 45 to reinforce the back frame F2. The reinforcing plate 47 has an upper portion that cooperates with the backside frame 46 and the pipe frame 45 to form a hollow three-dimensional structure, and a lower portion that extends downward along the backside frame 46.

The lower portions of the left and right backside frames 46 have side surfaces facing the left-right direction. The lower left side surface of the left backside frame 46 faces the right side surface of the left slide member 21, and is rotatably connected. As shown in FIGS. 5 and 7, the lower left side surface of the right backside frame 46 faces the right side surface of the reclining mechanism 3 attached to the right slide member 21, and the right slide member 21 is interposed via the reclining mechanism 3. Is rotatably connected to. The rotating shafts of the left and right backside frames 46 are arranged coaxially with each other.

The reclining mechanism 3 can maintain the turning (tilting) angle of the right backside frame 46 with respect to the right slide member 21 at an arbitrary position. Further, the reclining mechanism 3 has a release lever 51, and when the release lever 51 is operated, the rotation angle of the right backside frame 46 with respect to the right slide member 21 can be changed. Various known mechanisms can be applied to such a reclining mechanism 3.

As shown in FIG. 9, the reclining mechanism 3 as an example according to the present embodiment is joined to the lower plate 52 joined to the right slide member 21 and the lower portion of the right side frame, and is arranged so as to face the lower plate 52. An upper plate 53 rotatable with respect to the lower plate 52, a connecting shaft 54 penetrating the lower plate 52 and the center of rotation of the upper plate 53, and an internal space formed between the upper plate 53 and the lower plate 52. The cam plate 55 rotating integrally with the connecting shaft 54, the plurality of lock members 56 arranged in the internal space, and the torsion spring 57 as a biasing means for biasing the cam plate 55 in one rotation direction. And have. The lock member 56 engages with a guide groove 58 formed in the lower plate 52, and is arranged so as to be movable in the radial direction of the lower plate 52. The lock member 56 has a cam portion in the radially inner portion, has outer teeth 59 in the radially outer portion, and forms an inner space of the upper plate 53 when moving radially outward. It engages with inner teeth 61 formed on the surface in the circumferential direction. The cam plate 55 engages with the lock member 56, moves the lock member 56 radially outward when rotating in one rotation direction, and moves the lock member 56 radially inward when rotating in the other rotation direction. Move towards. One end of the connecting shaft 54 penetrates the upper plate 53 and the right backside frame 46, and a release lever 51 (FIGS. 3 and 7) extending in the radial direction is joined to the end thereof.

In the reclining mechanism 3, normally, the cam plate 55 is biased in one rotational direction by the torsion spring 57, the lock member 56 moves radially outward, and the outer teeth 59 of the lock member 56 move to the upper plate 53. The inner teeth 61 are engaged. As a result, the relative rotation of the lower plate 52 and the upper plate 53 is prohibited via the lock member 56. That is, the reclining mechanism 3 is in a locked state in which the urging force of the torsion spring 57 prohibits the upper plate 53 from rotating with respect to the lower plate 52. When the release lever 51 rotates in the release direction due to the operation of the occupant, and the connecting shaft 54 and the cam plate 55 rotate in the other rotation direction against the urging force of the torsion spring 57, the lock member 56 moves. By moving inward in the radial direction, the outer teeth 59 of the lock member 56 and the inner teeth 61 of the upper plate 53 are disengaged. This allows the lower plate 52 and the upper plate 53 to rotate relative to each other. One end of a reclining cable 63 (FIGS. 3 and 7) serving as force transmission means is locked to the release lever 51. The release lever 51 rotates in the release direction when the reclining cable 63 is pulled.

As shown in FIGS. 2, 3, and 5, a bracket 66 that supports the handle unit 65 is joined to the upper end portion of the right side portion of the pipe frame 45 by welding or the like. The handle unit 65 has a case 67 that is open upward and rearward, and a handle 68 that is rotatably mounted in the case 67. As shown in FIGS. 1 and 2, the seat back pad P2 and the outer skin SK on the outer surface thereof are notched at a portion corresponding to the handle unit 65. As a result, the handle 68 is exposed on the right side of the upper end of the seat back S2 and can be operated by the occupant.

The handle 68 includes the other end of the locking claw cable 43 whose one end is locked by the locking claw 41 (FIG. 8) and the reclining cable 63 whose one end is locked by the release lever 51 (FIG. 3). The other end is connected. The locking claw cable 43 and the reclining cable 63 are slidably held by a cylindrical outer tube. The locking claw outer tube 71 that holds the locking claw cable 43 is not described in detail, but will be described mainly with reference to FIG. 5. One end is fixed to the stand base 34 and the right slide member is provided. 21 and extends upward along the right side portion of the right backside frame 46 and the pipe frame 45, and the other end is fixed to the bracket 66. As shown in FIG. 3, the reclining outer tube 72 holding the reclining cable 63 has one end fixed to the right side surface of the right backside frame 46, and the right outer side portion of the right backside frame 46 and the pipe frame 45. The other end is fixed to the bracket 66. The locking claw outer tube 71 and the reclining outer tube 72 are bound to the right side portion of the pipe frame 45 by a band or the like.

When the occupant pulls the handle 68 and rotates the handle 68 in one rotation direction, the locking claw cable 43 is pulled toward the handle 68, and the locking claw 41 (FIG. 8) is moved from the thrust position to the retracted position. It rotates and the lock of the stand leg 37 by the locking claw 41 is released. At the same time, the reclining cable 63 is pulled toward the handle 68, the release lever 51 (FIG. 3) rotates in the releasing direction, and the reclining mechanism 3 is unlocked.

As shown in FIGS. 2 and 3, an armrest bracket 76 supporting the armrest 75 is joined to the left side portion of the pipe frame 45 by welding or the like. The armrest bracket 76 projects forward from the left side portion of the pipe frame 45. An armrest 75 is rotatably attached to the armrest bracket 76 within a predetermined range.

As shown in FIGS. 2 and 5, a pair of headrest holding portions 78 for supporting the headrest S3 are joined to the upper side portion of the pipe frame 45. The headrest holding portion 78 has a tubular shape, and a support 79, which is a tubular member made of resin, is inserted inside. The headrest S3 is attached to the upper side portion of the pipe frame 45 by inserting a pair of headrest pillars 80, which are a part of the headrest frame F3, into the headrest holding portion 78 via the support 79.

A plurality of auxiliary frames 82 formed by metal rods are welded to the pipe frame 45 at appropriate positions. The auxiliary frame 82 is provided so as to be bridged between the left and right side portions, arranged to project leftward from the left side portion, and arranged to project rightward from the right side portion. Including things. The auxiliary frame 82 compensates for the gap of the pipe frame 45 and supports the seat back pad P2.

As shown in FIGS. 2 and 5, the cushion frame F1 includes a pair of left and right cushion side frames 85 extending in the front-rear direction, a cushion front member 86 connecting the front ends of the left and right cushion side frames 85, and left and right cushion side frames. And a cushion rear member 87 that connects the rear portions of the rear portion 85. The left and right cushion side frames 85 are formed by pressing a metal plate or the like, and the main surfaces of the left and right cushion side frames 85 are bent to the left and right, and the edges are bent and bent outward. The rear end portions of the left and right cushion side frames 85 are bent with respect to the front portion extending in the front-rear direction and extend rearward and inclined upward. The cushion rear member 87 is provided at the bent portions of the left and right cushion side frames 85.

The rear end portion of the left cushion side frame 85 is arranged so that its right side surface faces the upper part of the left side surface of the left backside frame 46, and is rotatably attached to the left backside frame 46.

As shown in FIG. 6, a fastening seat 88 is formed at an upper portion of the right backside frame 46 so as to project rightward and the projecting end has a planar shape. A support plate 89 is joined to the fastening seat 88 by bolt fastening or the like. Below the fastening seat 88 in the right backside frame 46, a recess 90 is formed which forms a gap with the support plate 89. The support plate 89 is a metal plate whose main surface faces left and right and extends vertically, and the upper end portion is joined to the fastening seat 88. The lower portion of the support plate 89 is arranged at a distance from the right side surface of the right backside frame 46. The rear end portion of the right cushion side frame 85 is disposed between the right back side frame 46 and the support plate 89, and is rotatably attached to the support plate 89. The rotation axes of the left and right cushion frames extend to the left and right, and are arranged coaxially with each other.

Returning to FIGS. 2 and 5, the front and rear cushion members 86 and 87 are provided with a center support member 91 extending in the front-rear direction. The center member is a member that supports the seat cushion pad P1 and the occupant's buttocks from below in the central portion of the cushion frame F1, and preferably has elasticity. In the present embodiment, the center support member 91 is a plate (center plate) formed by press-forming a metal plate or the like, the main surface thereof faces up and down, and the front end portion in the left-right direction of the cushion front member 86. It is welded to the central portion, and the rear end portion is welded to the central portion in the left-right direction of the cushion rear member 87. The width of the center support member 91 in the left-right direction is about 1/3 of that of the front cushion member 86. The center support member 91 is provided with reinforcing beads and lightening for proper weight reduction at appropriate positions. In another embodiment, the center support member 91 may be made of an elastic member such as a wire spring. In addition, a plurality of center support members 91 may be provided in the width direction.

As also shown in FIG. 7, the stand legs 37 are rotatably attached to the left and right cushion side frames 85. The stand leg 37 is rotatably attached to the left and right cushion side frames 85 at one end, and has a pair of left and right arms 93 extending to the other end, and a lateral member 94 connecting the other ends of the left and right arms 93 to each other. And has a substantially U-shaped outer shape. Most of the left and right arms 93 and the lateral member 94 are formed by bending a metal pipe into a substantially U shape. One end of each of the left and right arms 93 is formed by a bracket welded to the pipe, and the bracket is rotatably attached to the left and right cushion side frames 85. When viewed from the left and right sides of the stand leg 37 (FIG. 3 ), the horizontal member 94 is close to the lower surface of the center support member 91, and the arm 93 extends along the cushion side frame 85. The cushion side frame 85 is pivotable between a use position protruding downward and a use position indicated by a solid line. The stand leg 37 is arranged outside the cover forming the bottom surface of the seat cushion S1 in both the use position and the storage position.

When the stand leg 37 is in the use position, the stand leg 37 can enter the support groove 35 of the stand base 34, as shown in FIG. When the stand leg 37 is locked in the support groove 35, the seat cushion S1 is supported by the stand leg 37 from below and is arranged at a seating position where the seat surface (upper surface) extends substantially horizontally. Further, the stand leg 37 is locked in the support groove 35, whereby the rotation from the use position to the storage position is restricted. That is, when the stand leg 37 is locked in the support groove 35, the rotational position of the seat cushion S1 with respect to the seat back S2 is determined.

When the lateral member 94 of the stand leg 37 is inserted into the support groove 35, the lateral member 94 pushes the inclined surface of the locking claw 41 to resist the biasing force of the torsion spring 42 from the protruding position. Rotate to the retracted position. When the lateral member 94 is inserted into the support groove 35, the locking claw 41 is rotated to the thrust position by the biasing force of the torsion spring 42. The locking claw 41 locks the lateral member 94 at the protruding position and prevents the lateral member 94 from being separated from the support groove 35. When the pipe portion is desired to be removed from the support groove 35, the occupant operates the handle 68 (FIG. 1) to position the locking claw 41 at the retracted position via the locking claw cable 43.

As shown in FIGS. 3, 5 and 6, the tip-up mechanism 5 is interposed between the right cushion side frame 85 and the support plate 89. The tip-up mechanism 5 fixes the right cushion side frame 85 to the support plate 89 at a predetermined position where the seat cushion S1 is rotated above the seated position, and rotates the seat cushion S1 with respect to the seat back S2. It is a device that fixes the position. Various known mechanisms can be applied to such a tip-up mechanism 5.

As shown in FIG. 10, the tip-up mechanism 5 as an example according to the present embodiment has an engaging recess 101 formed of a notch formed in an edge portion of a lower end portion of a support plate 89, and a right side of a right cushion side frame 85. A lock member 102 rotatably attached to the surface and displaceable between an engagement position shown by an imaginary line for engaging with the engagement recess 101 and a release position shown by a solid line separated from the engagement recess 101; A rubber (not shown) provided between the member 102 and the right cushion side frame 85 as an urging means for urging the lock member 102 to the engagement position, and rotatable to the right side surface of the right cushion side frame 85. Between a first position indicated by a solid line for engaging the lock member 102 to position the lock member 102 in the release position, and a second position indicated by an imaginary line for canceling the engagement with the lock member 102. A rotating cam member 103 and a tension coil spring 104 provided between the cam member 103 and the right side surface of the right cushion side frame 85 as a biasing means for biasing the cam member 103 to the second position are provided. doing.

At least one engaging recess 101 is provided. One of the engagement concave portions 101 is located at a limit position (referred to as a tip-up position) where the seat cushion S1 is rotated upward in the rotatable range, that is, the seat surface (upper surface) of the seat cushion S1 is the seat back S2. The lock member 102 is formed at a position where the lock member 102 is engageable when the lock member 102 is closest to the support surface (front surface). When the seat cushion S1 is located at the tip-up position, the front portion of the right cushion side frame 85 is substantially parallel to the right side portion of the pipe frame 45. The other engagement recess 101 may be formed at a position where the lock member 102 can be engaged at an arbitrary angle between the seated position of the seat cushion S1 and the tip-up position. As a result, in the tip-up mechanism 5, when the right cushion side frame 85 is rotated upward with respect to the support plate 89, the lock member 102 urged by the tension coil spring 104 at the predetermined rotation position engages the recessed portion 101. To maintain the right cushion side frame 85 at a predetermined angle.

The engagement recess 101 maintains engagement with the lock member 102 when the right cushion side frame 85 rotates downward with respect to the support plate 89, and the right cushion side frame 85 rotates with respect to the support plate 89. However, when the right cushion side frame 85 rotates upward with respect to the support plate 89, the lock member 102 is disengaged, and the right cushion side frame 85 is rotated with respect to the support plate 89. You may. According to this configuration, the right cushion side frame 85 can be rotated upward even after the lock member 102 is engaged with the certain engagement recess 101, and the right cushion side frame 85 can be rotated further upward. The lock member 102 engages with the next engagement recess 101, and the right cushion side frame 85 can be flipped up to a desired angle even when the cam member 103 is in the second position shown by the imaginary line.

When the cam member 103 rotates to the first position shown by the solid line against the biasing force of the tension coil spring 104 due to the operation of the occupant, the lock member 102 moves to the release position and engages with the engagement recess 101. become unable. To the cam member 103, one ends of a first tip-up cable 106 and a second tip-up cable 107, which are force transmitting means, are connected. The first tip-up cable 106 is slidably held by the tubular first tip-up outer tube 108, and the second tip-up cable 107 is slidable by the tubular second tip-up outer tube 109. Be hugged as possible.

One end of the first tip-up outer tube 108 is attached to the right side surface of the right cushion side frame 85 so that the opening faces the cam member 103 side. As shown in FIGS. 3 and 5, the first tip-up outer tube 108 extends forward from one end along the right side surface of the right cushion side frame 85 and passes through the lower front end of the right cushion side frame 85 to form the right cushion. It extends to the left of the side frame 85. A bracket 111 is joined to the lower portion of the front end of the right cushion side frame 85, and the other end of the first tip-up outer tube 108 is fixed to the bracket 111 so that the opening faces rearward. The other end of the first tip-up cable 106 is fixed to the end of the right arm 93 of the stand leg 37. As shown in FIG. 10, when the stand leg 37 is located at the storage position shown by the imaginary line, the other end (the end portion of the right arm 93) of the first tip-up cable 106 has the first tip-up outer tube 108. Of the first tip-up cable 106 is slackened by approaching the other end of the first tip-up cable 106, and the other end of the first tip-up cable 106 (the end portion of the right arm 93) is the first tip-up cable when the first tip-up cable 106 is in the use position shown by the solid line. The first tip-up cable 106 is pulled apart from the other end of the outer tube 108. That is, when the stand leg 37 is in the use position, the cam member 103 is pulled by the first tip-up cable 106 to be in the first position shown by the solid line in FIG. 10, and the lock member 102 is also released by the solid line. Located in position.

The second tip-up outer tube 109 is attached such that one end thereof is on the right side surface of the right cushion side frame 85 and the opening faces the cam member 103 side. As shown in FIGS. 3 and 5, the second tip-up outer tube 109 extends from one end to the left side of the right cushion side frame 85 through the lower middle portion in the front-rear direction of the right cushion side frame 85, and then to the right. It extends along the left side surface of the cushion side frame 85 and near the rotation axis of the right cushion side frame 85. Thereafter, as shown in FIGS. 3 and 6, the second tip-up outer tube 109 wraps around the rear side of the right backside frame 46 from the vicinity of the rotation axis of the right cushion side frame 85, and then the right backside frame 46. It extends near the rotation axis of the right backside frame 46 along a reinforcing plate 47 arranged on the left side of the. The other end of the second tip-up outer tube 109 faces downward to a protrusion 112 (FIG. 6) integrally formed with the reinforcing plate 47 so as to protrude inward from the left side surface of the reinforcing plate 47. It is fixed. The second tip-up cable 107 is locked to the left side surface of the lower plate 52 (FIG. 9) attached to the right slide member 21. The protruding portion 112 functions as a fixing portion that fixes the other end of the second tip-up outer tube 109, and is formed to protrude to a position where it overlaps with the right slide member 21 in the left-right direction. By contacting the right slide member 21 when the frame 46 rotates rearward, it functions as a stopper that restricts further rearward rotation of the right backside frame 46.

The positions of the other end of the cable 107 for the second tip-up and the other end of the outer tube 109 for the second tip-up are for the second tip-up as the seat back S2 leans forward from the state of standing up against the floor 4. The other end of the cable 107 is set apart from the other end of the second tip-up outer tube 109. As a result, the second tip-up cable 107 is pulled toward the other end as the seat back S2 tilts forward, and when the seat back S2 tilts forward by a predetermined angle or more, the cam member 103 (FIG. 10) moves to the second position. The cable is pulled by the tip-up cable 107 to be located at the first position shown by the solid line in FIG. 10, and the lock member 102 is also located at the release position shown by the solid line. That is, the first tip-up cable 106 and the first tip-up outer tube 108, and the second tip-up cable 107 and the second tip-up outer tube 109 are tips for unlocking the tip-up mechanism 5, respectively. The uplock canceling mechanism 113 is configured.

Since two of the first tip-up cable 106 and the second tip-up cable 107 are connected to the cam member 103, the cam member 103 has at least one of the first tip-up cable 106 and the second tip-up cable 107. Is located at the first position while being pulled toward the other end, and the lock member 102 is located at the release position. In other words, the first tip-up cable 106 and the second tip-up cable 107 are both loose, that is, the forward inclination angle of the seat back S2 is equal to or less than a predetermined value (that is, the standing leg 37) and the stand leg 37 is provided. 10 is in the storage position, the cam member 103 is in the second position shown by the phantom line in FIG. 10, and the lock member 102 can be engaged with the engagement recess 101.

Next, the arrangement of the first rail cable 31 and the second rail cable 32 will be described. As shown in FIG. 5, the first rail cable 31 is slidably held by the tubular first rail outer tube 114, and the second rail cable 32 is tubular second rail outer tube 115. It is held slidably by. One ends of the outer rail tube 114 for the first rail and the outer tube 115 for the second rail are locked to an immovable portion of the link mechanism 28, and one ends of the cable 31 for the first rail and the cable 32 for the second rail are connected to the link mechanism 28. It is locked to the movable part. In another example, one ends of the first rail outer tube 114 and the second rail outer tube 115 may be locked to the slider middle member 25 and the slider rear member 24.

The first rail outer tube 114 extends from one end to the left side surface of the right backside frame 46, and then, as shown in FIG. 6, upwardly along the left side surface of the right backside frame 46, to the right cushion side frame 85. Extends to the vicinity of the rotation axis. Then, the first rail outer tube 114 wraps around the rear of the right backside frame 46 and reaches the right side surface of the right backside frame 46, and from the vicinity of the rotation axis of the right cushion side frame 85 to the right cushion side frame 85. It extends to the left side. Thereafter, as shown in FIG. 5, the first rail outer tube 114 extends forward along the left side surface of the right cushion side frame 85 to the cushion rear member 87, passes below the center support member 91, and is slanted to the left. It extends to the front and extends to a bracket 117 joined to the lower part of the front end of the left cushion side frame 85. The other end of the first rail outer tube 114 is locked to the bracket 117 so that the opening faces forward. The other end of the first rail cable 31 projects forward from the other end of the first rail outer tube 114, and the first gripping member 118 is attached thereto. The first rail cable 31, the first rail outer tube 114, and the first gripping member 118 constitute an operating member that unlocks the slide mechanism 2.

The second rail outer tube 115 forms a loop from one end, extends rearward, and extends to the bracket 121 joined to the slider rear member 24. The other end of the second rail outer tube 115 is locked to the bracket 121 so that the opening faces rearward. The other end of the second rail cable 32 projects rearward from the other end of the second rail outer tube 115, and the second gripping member 122 is attached thereto. The second rail cable 32, the second rail outer tube 115, and the second grip member 122 constitute an operation member that unlocks the slide mechanism 2.

The first gripping member 118 and the second gripping member 122 are straps including woven cloth, strings, ropes, etc., and have flexibility. In the present embodiment, the first gripping member 118 and the second gripping member 122 are formed by looping back a band-shaped band. As shown in FIGS. 1 and 7, a passage (not shown) is formed in the front portion of the seat cushion pad P1 (FIG. 2) through which the first gripping member 118 penetrates forward and backward, and the front end surface of the seat cushion pad P1 is formed. A grommet 127 that defines a hole through which the first gripping member 118 passes is attached to the skin SK of 125. As a result, the leading end of the first grip member 118 passes through the grommet 127 and projects from the front end surface of the seat cushion S1.

The occupant can pull the first rail cable 31 by grasping the first grasping member 118 and pulling it by the method of pulling out from the seat cushion S1. Further, the occupant can pull the second rail cable 32 by holding the second holding member 122 and pulling the second holding member 122 backward. By pulling at least one of the first rail cable 31 and the second rail cable 32, the link mechanism 28 is changed from the locked state to the released state, the left and right rail lock members 17 are disengaged from the lock holes, and the lower rail 15 is attached. On the other hand, the upper rail 16 becomes movable. That is, the seat S attached to the upper rail 16 can be moved back and forth with respect to the floor 4.

As shown in FIGS. 2, 5 and 11, the Ottoman frame F4 has a base member 130 extending in the left-right direction, and a base end portion rotatably attached to the left end and the right end of the base member 130, respectively. It has a pair of left and right Ottoman side frames 131 extending to the front end portion, and an Ottoman front member 132 extending left and right and connecting the front end portions of the left and right Ottoman side frames 131, and is formed in a rectangular frame shape. A plurality of Ottoman auxiliary members 134 that connect the left and right Ottoman side frames 131 are stretched between the base member 130 and the Ottoman front member 132. The base member 130 and the ottoman front member 132 are formed of metal pipes. The left and right Ottoman side frames 131 are formed by press-molding a metal plate or the like, the main surfaces of the left and right Ottoman side frames 131 face left and right, and the edges thereof are bent inward in the left-right direction. The base member 130 is provided with a pair of left and right ottoman pillars 135 with a space left and right. The left and right ottoman pillars 135 are formed of solid metal rods, are spaced apart from each other in the left-right direction, and extend in parallel with each other.

The base member 130 is covered with a cylindrical base member pad 138 (FIG. 1). The outer surface of the base member pad 138 is covered with the skin SK. The ottoman pad P4 (FIG. 2) has a substantially rectangular outer shape, and is attached so as to cover the front end side of the left and right ottoman side frames 131 excluding the base end portion, the ottoman front member 132, and the ottoman auxiliary member 134, and the outer shape is rectangular. Is formed on. The skin SK of the ottoman S4 is provided so as to cover the ottoman pad P4, the distal end side of the left and right ottoman side frames 131 excluding the base end portions, the ottoman front member 132, and the ottoman auxiliary member 134. The base end portions of the left and right ottoman side frames 131 protruding from the ottoman pad P4 and the skin SK are covered with a cover 139 (FIG. 1) made of resin or the like, and the left and right ottoman side frames 131 and the base member 130 are separated from each other. The connection is hidden.

As shown in FIG. 11, the cushion front member 86 is provided with a pair of left and right pillar support portions 141 that support the pair of Ottoman pillars 135. The pillar support portion 141 is formed in a tubular shape having a quadrangular cross section with both ends open. The pillar support portion 141 is located between the right cushion side frame 85 and the right edge of the center support member 91, and the portion of the front cushion member 86 corresponding to the left cushion side frame 85 and the left edge of the center support member 91. And a portion corresponding to. The pillar support portion 141 is arranged below the cushion front member 86 such that its axis extends in the front-rear direction, and its upper portion projects into a front-rear recessed portion 143 formed in the lower portion of the cushion front member 86, and welding is performed in the recessed portion 143. Are joined by. A support 142, which is a tubular member made of resin, is inserted into each pillar support portion 141. The left and right ottoman pillars 135 are inserted into the inner holes of the supports 142 attached to the pillar support portions 141. As a result, the ottoman frame F4 is attached to the cushion frame F1.

A plurality of locking grooves 146 are formed on at least one side surface of the two ottoman pillars 135 at intervals in the longitudinal direction. In the present embodiment, the locking groove 146 is formed in the right ottoman pillar 135. As shown in FIG. 1, the front end portion of the support 142 is arranged on the outer surface of the skin SK of the seat cushion S1. Returning to FIG. 11, a locking member 147 is displaceably received at the front end of the support 142. The locking member 147 is displaceable between a projecting position where it projects into the inner hole of the support 142 and a retracted position where it separates from the inner hole, and is biased to the projecting position by a biasing member (not shown). One end portion of the locking member 147 projects outward from the side portion of the front end portion of the support 142 to form an operation portion 148 that can be operated by an occupant. The occupant can move the locking member 147 from the thrust position to the retracted position by pushing the operation unit 148 against the support 142. The locking member 147 maintains the position of the ottoman pillar 135 with respect to the support 142 by locking the locking groove 146 of the ottoman pillar 135.

The left and right ottoman side frames 131 with respect to the base member 130 are rotatable between a storage position (see FIG. 14A1) and a most expanded position (see phantom lines in FIG. 15D3). .. A temporary storage position (see FIG. 15D1) is set between the storage position and the most expanded position. In the storage position, most of the ottoman S4 is disposed below the seat cushion S1, and the back surface of the ottoman S4 faces the bottom surface of the seat cushion S1. At the temporary storage position, the ottoman S4 is held in a state of being substantially vertically suspended from the base member 130. At the most expanded position, the ottoman S4 projects forward with respect to the seat cushion S1, and the supporting surface of the ottoman S4 faces in the same direction as the upper surface of the seat cushion S1.

An angle adjusting mechanism 6 (FIG. 5) and a detent mechanism 165 (FIG. 5) are interposed between the right end portion of the base member 130 and the right ottoman side frame 131. When the ottoman S4 is viewed from the left, the angle adjusting mechanism 6 allows the right ottoman side frame 131 to rotate clockwise (rotate to the most expanded position) with respect to the base member 130, and at the same time the temporary storage position and the most expanded position. The counterclockwise rotation (rotation to the storage position side) of the right Ottoman side frame 131 with respect to the base member 130 is prohibited in the angle range between and. After the rotation of the ottoman side frame 131 with respect to the base member 130 reaches the most expanded position, the angle adjusting mechanism 6 rotates the right ottoman side frame 131 clockwise with respect to the base member 130 until it reaches the storage position. Tolerate. Various known mechanisms can be applied to such an angle adjusting mechanism 6.

As shown in FIG. 12, the angle adjusting mechanism 6 as an example according to the present embodiment is rotatable on the ratchet teeth 151 integrally fixed to the outer peripheral portion of the base member 130 and on the left side surface of the right ottoman side frame 131. Is provided between the claw body 152 and the left side surface of the right Ottoman side frame 131, which is attached to the ratchet tooth 151, and is urged toward the ratchet tooth 151 side. It has a torsion spring 153, a cam body 154 coaxially and rotatably attached to the base member 130, and a protrusion 155 provided on the base member 130. Further, between the base member 130 and the right Ottoman side frame 131, a torsion coil spring 156 that constantly biases the right Ottoman side frame 131 toward the storage position is provided. By engaging the ratchet teeth 151 with the claws 152, rotation of the right ottoman side frame 131 relative to the base member 130 toward the storage position side is blocked. When the right ottoman side frame 131 rotates to the most deployed position side with respect to the base member 130, the pawls 152 can be disengaged from the engaged ratchet teeth 151 and engage the adjacent ratchet teeth 151. You can

The cam body 154 is recessed radially inward of the base member 130 with respect to the large-diameter portion 157 protruding radially outward of the base member 130 with respect to the protruding end of the ratchet tooth 151 and the root circle of the ratchet tooth 151. And a small diameter portion 158. The claw body 152 can be engaged with the ratchet teeth 151 when the small diameter portion 158 of the cam body 154 is opposed, and is in contact with the large diameter portion 157 when the large diameter portion 157 of the cam body 154 is opposed. It becomes impossible to engage with the ratchet teeth 151. When the claw body 152 faces the small diameter portion 158 of the cam body 154, the claw body 152 contacts the boundary portion between the small diameter portion 158 and the large diameter portion 157, and rotates the right ottoman side frame 131 relative to the base member 130 toward the most deployed position. The cam body 154 is rotated accordingly. When the rotation of the right Ottoman side frame 131 relative to the base member 130 progresses to the most deployed position side and reaches a predetermined angle near the most deployed position, the projection 155 engages with the first stopper surface 161 of the cam body 154 to cause the cam body to move. The rotation of 154 with respect to the base member 130 is restricted. As a result, the pawl body 152 rotates relative to the cam body 154 and rides on the outer circumference of the large diameter portion 157. In this state, the claws 152 cannot engage with the ratchet teeth 151, and the right ottoman side frame 131 can be rotated relative to the base member 130 on the storage position side.

While the claw body 152 rides on the outer circumference of the large diameter portion 157 and the right Ottoman side frame 131 rotates with respect to the base member 130 toward the storage position side, the cam body 154 receives a frictional force from the claw body 152 and the claw body 154 Rotate with respect to base member 130 with body 152 and right Ottoman side frame 131. When the rotation of the right Ottoman side frame 131 relative to the base member 130 progresses toward the storage position side and the claw body 152 exceeds the range facing the ratchet teeth 151, the protrusion 155 engages with the second stopper surface 162 of the cam body 154. As a result, rotation of the cam body 154 with respect to the base member 130 is restricted. As a result, the pawl body 152 rotates relative to the cam body 154, and the pawl body 152 moves from the outer circumference of the large diameter portion 157 to the position facing the small diameter portion 158. In this state, the pawls 152 can be engaged with the ratchet teeth 151 again, and when the right ottoman side frame 131 is rotated to the most deployed position side with respect to the base member 130, the pawls 152 engage the ratchet teeth 151. To meet.

The detent mechanism 165 holds the ottoman S4 at a predetermined rotational position with a detent feeling, that is, half-locks the ottoman S4 with a larger holding force than the rotational positions before and after the detent mechanism. The detent mechanism 165 is configured to hold the ottoman S4 at two positions, the temporary storage position and the storage position. Various known mechanisms can be applied to the detent mechanism 165. In the present embodiment, as shown in FIG. 13, a recess 166 is formed on the outer peripheral surface of the base member 130, a half lock member 167 is provided so as to be slidable on the Ottoman side frame 131 and engageable with the recess 166, and urged. The half lock member 167 is biased toward the base member 130 by the means 168. The engagement surface of the recess 166 and the half lock member 167 is formed into a curved surface or an inclined surface. In the detent mechanism 165, when the ottoman S4 is in the temporary storage position and the storage position, the half lock member 167 and the recess 166 are engaged with each other, and a predetermined rotational load is applied to the base member 130 and the ottoman side frame 131. Then, the engagement between the half lock member 167 and the recess 166 is released. This turning load is set to a larger value than the turning load due to the own weight of the ottoman S4 and the turning load due to the biasing force of the torsion coil spring 156.

Next, operations and postures that the sheet S configured as described above can take will be described with reference to FIGS. 14 and 15.

FIG. 14A1 shows a use state of the seat S in which the seat back S2 is in the use position, the seat cushion S1 is in the sitting position, and the ottoman S4 is in the storage position. In this state, when the occupant operates the handle 68 (FIG. 1) to unlock the stand leg 37, grips the seat cushion S1 as shown by the arrow and flips up to the seat back S2 side, (A2) As shown, the seat surface of the seat cushion S1 can be rotated to the upper limit position (tip-up position) along the front surface of the seat back S2. In this state, the stand leg 37 is at the use position projecting from the bottom surface of the seat back S2, and the cam member 103 (FIG. 10) of the tip-up mechanism 5 is pulled by the first tip-up cable 106, so that the lock member is locked. 102 is located at the release position, and the rotational position of the seat cushion S1 with respect to the seat back S2 is not fixed. When the stand leg 37 is tilted in the direction of the arrow and moved to the storage position, the tip-up mechanism 5 can be locked as shown in (A3), the rotational position of the seat cushion S1 is fixed, and the seat cushion S1 is tipped. The seat S is held in the tip-up posture in the up position.

Next, in the same state as (A1) shown in (B1), when the handle 68 (FIG. 1) is operated to unlock the stand leg 37 and the reclining mechanism 3, the seat back S2 can be tilted forward. It will be possible. In this state, the tip-up mechanism 5 cannot be locked, and the relative angle between the seat back S2 and the seat cushion S1 can be changed. When the seat back S2 rotates forward, the stand leg 37 moves out of the support groove 35 (FIG. 8) of the stand base as shown in (B2). Further, as the seat back S2 tilts forward, the stand legs 37 fall, and as shown in (B3), the seat cushion S1, the seat back S2, and the ottoman S4 of the seat S are lower parts of the floor 4. It becomes the dive-down posture stored in 12. In this state, since the stand leg 37 is arranged at the storage position, the first tip-up cable 106 (FIG. 10) is loosened, but the seat back S2 is tilted forward by a predetermined angle or more, so that the tip-up mechanism is increased. The cam member 103 of No. 5 is pulled by the second tip-up cable 107, the lock member 102 is located at the release position, and the rotational position of the seat cushion S1 with respect to the seat back S2 is not fixed.

When the seat S is in the tip-up posture as shown in (A3), the handle 68 is operated to unlock the reclining mechanism 3, and the seat back S2 together with the seat cushion S1 are shown as indicated by a dashed arrow. The seat S can also be changed to the dive-down posture of (B3) by tilting it forward.

When returning the seat S in the dive-down posture to the use state, as shown in (C1), the occupant operates the handle 68 to unlock the reclining mechanism 3 and raises the seat back S2 as indicated by the arrow. Rotate to. At this time, because the tip-up mechanism 5 is not locked, as shown in (C2), the seat cushion S1 does not rise up together with the seat back S2 and moves backward so as to be dragged by the seat back S2, and the stand leg 37 Engages with the wall portion 13 of the floor 4 or the seat base 26. As shown in (C3), when the occupant turns the seat back S2 rearward as it is, the stand leg 37 is caught by the wall portion 13 of the floor 4 or the seat base 26, and is moved to the use position. When the occupant further rotates the seat back S2 rearward, the lateral member 94 (FIG. 8) of the stand leg 37 pushes the locking claw 41 and thrusts into the support groove 35 of the stand base 34, as shown in (C4). Thus, the seat back S2 is fixed at the use position and the seat cushion S1 is fixed at the seating position. The ottoman S4 does not engage with the wall portion 13 of the floor 4 because the stand leg 37 is raised and the bottom surface of the seat cushion S1 is separated from the floor 4, and when the seat S is in the seated state shown in (C4), the ottoman S4 is twisted. It is held at the storage position by the biasing force of the torsion coil spring 156 and the holding force of the detent mechanism 165.

The occupant can rotate the ottoman S4 in the arrow direction from the state shown in (C4) and move it to the temporary storage position where the ottoman S4 hangs as shown in (C5). The ottoman S4 is held at the temporary storage position by the detent mechanism 165. Since the angle adjustment mechanism 6 of the ottoman S4 does not maintain the angle of the ottoman S4 between the storage position and the temporary storage position, the ottoman S4 can be freely rotated in any direction. Therefore, by rotating the ottoman S4 again in the direction of the arrow from the state of (C5), the ottoman S4 is stored with the biasing force of the torsion coil spring 156 facing the bottom surface of the seat cushion S1 shown in (C6). Can be moved to a position.

As shown in (D1) of FIG. 15, when the ottoman S4 is further rotated in the direction indicated by the arrow from the temporary storage position, the ottoman S4 is rotated by the angle adjusting mechanism 6 as shown in (D2). It is fixed (prohibition of rotation to the temporary storage position side) at a desired rotation angle (deployment position) according to the dynamic operation. Further, the occupant can operate the locking member 147 (FIG. 11) to release the lock of the ottoman pillar 135 with respect to the seat cushion S1, move the ottoman S4 to a desired position in the front-rear direction, and fix the ottoman S4 at that position. it can. When the use of the ottoman S4 is finished, the ottoman S4 is rotated in the direction indicated by the arrow in (D2) and moved to the most expanded position indicated by the broken line in (D3) to fix the angle adjustment mechanism 6. It can be canceled. When the fixing by the angle adjusting mechanism 6 is released, the ottoman S4 is rotated downward by its own weight and the biasing force of the torsion coil spring 156, and is held at the temporary storage position.

When the seat S is changed from the use state to the dive-down state when the ottoman S4 is in the temporary storage position, as shown in (E1), the occupant operates the handle 68 (FIG. 1) to stand the legs. The lock of 37 and the lock of the reclining mechanism 3 are released, the seat back S2 is gripped, and the seat back S2 is rotated forward as indicated by an arrow. At this time, as shown in (E2), the tip of the ottoman S4 abuts on the lower portion 12 of the floor 4, and the seat cushion S1 moves diagonally forward and downward. When added to the tip, the ottoman S4 rotates to the storage position side. As shown in (E3), in the dive-down state of the seat S in which the seat back S2 is completely tilted, the ottoman S4 receives the urging force of the torsion coil spring 156 and is located at the storage position, and the detent mechanism. Held by 165. Therefore, when the occupant performs the operation of returning the seat S from the dive-down state to the use state, which shows a series of operations in (C) of FIG. 14, the ottoman S4 remains in the storage position even when the seat S returns to the use state. It remains held.

Returning to FIG. 15, the posture that the sheet S can take will be further described. As shown in (F1), when the seat cushion S1 is in the tip-up position, the handle 68 is operated to unlock the reclining mechanism 3, thereby rotating the seat back S2 forward together with the seat cushion S1. You can The seat back S2 and the seat cushion S1 are fixed at the position where the handle 68 is returned. For example, as shown in (F2), the reclining mechanism 3 can be locked at a position where the seat back S2 and the seat cushion S1 are upright. Further, as shown in (F3), the reclining mechanism 3 can be locked at the forward tilt position in which the seat back S2 is rotated forward of the upright position. Of course, in any of the states (F1) to (F3), the first gripping member 118 can be operated to unlock the slide mechanism 2 to move the seat back S2 and the seat cushion S1 back and forth. it can.

Alternatively, as shown in (G1), when the seat S is in the tip-up posture, the occupant rotates the stand leg 37 to the use position to unlock the tip-up mechanism 5, and as shown in (G2). Further, the seat cushion S1 can be rotated relative to the seat back S2. The occupant can lock the seat cushion S1 at any position with respect to the seat back S2 by returning the stand leg 37 to the storage position. Further, in this state, the occupant operates the handle 68 to unlock the reclining mechanism 3 and rotates the seat back S2 forward together with the seat cushion S1 to fix the seat S in the forward leaning posture shown in (G3). It is also possible. When the posture of the seat S is changed to the state of (G3), the stand leg 37 is operated from the state of (F3) to unlock the tip-up mechanism 5, and the seat cushion S1 is rotated forward. You may let me.

Next, the ottoman S4 will be described in more detail. As shown in FIG. 16, the ottoman S4 has a supporting surface 171 that supports an occupant's foot with a surface facing upward in the unfolded state. The support surface 171 is covered with the skin SK formed of synthetic leather or cloth as described above. On the other hand, unlike the support surface 171, the front end surface 172 of the ottoman S4 is formed of a material such as resin having a hardness higher than that of synthetic leather or cloth. In addition, a large number of small protrusions are formed on the surface of the front end surface 172 of the ottoman S4, and are configured to have a larger friction coefficient with respect to the floor 4 than the support surface 171. The friction coefficient referred to here is a dynamic friction coefficient.

The ottoman frame F4 will also be described in more detail with reference to FIG. The ottoman frame F4 is formed in a rectangular frame shape as described above, and has a pair of left and right ottoman side frames 131 and the like. The ottoman frame F4 is formed wider than the width dimension of the front portion of the cushion frame F1. The left and right ottoman side frames 131 are arranged at positions offset outward in the left and right direction from the front parts of the left and right cushion side frames 85.

The stand legs 37 rotatably attached to the left and right cushion side frames 85 are arranged so that the brackets welded to the ends on the rotation axis side face the inner surfaces of the front portions of the left and right cushion side frames 85. Has been done. That is, the stand leg 37 is formed narrower than the width dimension of the front portion of the cushion side frame 85. Therefore, as shown in FIG. 17, even when the stand leg 37 is in the storage position along the bottom surface of the seat cushion S1 and the ottoman S4 is also in the storage position, the stand leg 37, the cushion side frame 85, and the ottoman side frame 131. Are arranged so that they do not overlap each other.

Due to the configuration of the seat S in this manner, when the seat S is dive-down operated while the ottoman S4 is in the temporary storage position, as described in FIG. 15E, as shown in (E2). , The tip of the ottoman S4 comes into contact with the lower portion 12 of the floor 4, the holding by the detent mechanism 165 (FIG. 13) at the temporary storage position is released, and the ottoman S4 rotates rearward from the temporary storage position (on the storage position side). Then, the ottoman S4 is rotationally driven to the storage position by the urging force of the torsion coil spring 156 (FIG. 12), moves to the storage position along the bottom surface of the seat cushion S1, and is again held by the detent mechanism 165.

Then, as shown in FIG. 18, when the seat S is in the dive-down posture, the seat cushion S1 comes into contact with the seat base 26 so that the seat cushion S1 and the ottoman S4 move upward from the lower portion 12 of the floor 4. It is held at an upper position separated by a predetermined dimension C.

As described above, the ottoman S4 has two storage positions, that is, a temporary storage position that hangs down from the front portion of the seat cushion S1 when the seat cushion S1 is in the sitting position and a storage position that is closer to the bottom surface of the seat cushion S1. Is set, and the ottoman S4 is held at both storage positions. As a result, when the seat S is in the dive-down posture, the ottoman S4 can be arranged in the storage position where it is not exposed, and in the normal use where the dive-down operation is not performed, the ottoman S4 is arranged in the temporary storage position for use. When the occupant seated on the seat S in the state is unfolding the ottoman S4, the ottoman S4 does not have to reach to the free end of the ottoman S4 at the storage position along the bottom surface of the seat cushion S1. It can be easily operated by extending the hand and pulling up the free end of the ottoman S4.

As described above, during the dive-down operation of the seat S, the ottoman S4 is displaced toward the storage position that does not interfere with the floor 4, and the ottoman S4 that was in the temporary storage position does not block the dive-down operation. Since it is pivotally displaced, it is not necessary to displace the ottoman S4 at the temporary storage position by another operation before performing the dive down operation, and the operation of changing the seat S to the dive down posture is easy.

Further, during the dive-down operation, the ottoman S4 is rotated by the force received from the floor 4 as the front end surface 172 abuts on the lower portion 12 of the floor 4 and the seat cushion S1 is displaced obliquely downward to the front. Therefore, it is not necessary to provide a mechanism for displacing the ottoman S4 regardless of the dive down operation, the sheet S has a simple structure, and the manufacturing cost of the sheet S can be reduced.

The ottoman S4 is rotatably provided to a storage position closer to the bottom surface of the seat cushion S1 than the temporary storage position, and the storage position of the ottoman S4 is set on the bottom surface side of the seat cushion S1 with respect to the temporary storage position. Therefore, during the dive-down operation in which the seat cushion S1 is displaced diagonally forward toward the floor 4, the ottoman S4 at the temporary storage position comes into contact with the floor 4 and easily rotates toward the storage position. Therefore, the rotation angle of the temporary storage position can be set to the vertical direction that is less likely to disturb the occupant or to the rear of the vertical direction.

In this way, during the dive down operation, the front end surface 172 of the ottoman S4 contacts the lower portion 12 of the floor 4. In this embodiment, the front end surface 172 of the ottoman S4 has a larger friction coefficient with respect to the floor 4 than the support surface 171. Therefore, the dynamic frictional force when the front end surface 172 of the ottoman S4 and the floor 4 relatively move due to the displacement of the seat cushion S1 obliquely downward and forward becomes large, and the force for rotating the ottoman S4 surely reaches the ottoman S4. In addition, the ottoman S4 surely rotates to the storage position.

In the present embodiment, the ottoman S4 is held by the detent mechanism 165 (FIG. 13) at the temporary storage position with a larger holding force than the rotational positions before and after the temporary storage position. As a result, it is possible to prevent the ottoman S4 from swinging in the vicinity of the vertically suspended rotation position when the vehicle is accelerated or decelerated or when the ottoman S4 is released from the redeployed position and returned to the temporary storage position side. Further, the ottoman S4 is biased toward the storage position side by the torsion coil spring 156 even in the temporary storage position, but the ottoman S4 can be retained in the temporary storage position by the holding force of the detent mechanism 165. ..

Further, since the detent mechanism 165 holds the ottoman S4 with a large holding force so that the ottoman S4 does not rotate downward due to its own weight in the storage position, the ottoman S4 is rotated when the occupant rotates the ottoman S4 to the storage position. When the seat S is held in the storage position and the seat S is in the dive-down posture, it is possible to form a gap between the ottoman S4 in the storage position and the floor 4. Further, even when the occupant returns the seat S from the dive-down state to the use state, the ottoman S4 can be held in the storage position, so that a situation in which the occupant does not notice and catches on the ottoman S4 is prevented. ..

In the present embodiment, as shown in FIG. 12, the ottoman S4 has a torsion coil spring 156 as a biasing means for biasing the Ottoman side frame 131 toward the storage position side, and any rotation angle Even if it is, the torsion coil spring 156 exerts a biasing force toward the storage position. Therefore, when the dive down operation is performed, the ottoman S4 reliably rotates to the storage position. Further, when the seat S changes to the dive-down posture, the ottoman S4 is not dragged by the seat cushion S1 and does not come into sliding contact with the floor 4, so that the support surface 171 of the ottoman S4 during the posture change may become dirty. It can be prevented. Furthermore, even when the occupant returns the seat S from the dive-down state to the use state, the ottoman S4 can be held in the storage position, so that a situation in which the occupant catches his/her foot on the ottoman S4 without noticing is prevented. ..

In the present embodiment, the functions of the detent mechanism 165 and the torsion coil spring 156 allow the ottoman S4 to be held in the storage position. As shown in FIG. 18, the ottoman S4 in the storage position in the dive down state is shown. A clearance having a predetermined dimension C is formed between the floor and the floor 4. This prevents the ottoman S4 from getting dirty due to contact with the floor 4 when the seat S is in the dive-down posture.

Further, in the present embodiment, as shown in FIG. 17, when the stand leg 37 is in the storage position along the bottom surface of the seat cushion S1 and the ottoman S4 is in the storage position, the cushion side frame 85, the ottoman side frame 131, and The stand legs 37 are provided so as not to overlap each other. Therefore, the total thickness of the seat cushion S1, the ottoman S4, and the stand leg 37 when the stand leg 37 and the ottoman S4 are stored can be reduced. As a result, the thickness of the seat S when the seat S shown in (B3) of FIG. 14 or the like is in the dive-down state or when the seat cushion S1 shown in (F2) of FIG. The size can be reduced, and the space above the seat S in FIG. 14B3 and the space above and behind the seat S in FIG. 15F2 can be increased.

Next, a modification of the ottoman S4 will be described. As shown in FIG. 19, projecting portions 173 extending from the rotation shaft side toward the free end side are formed at both left and right ends of the support surface 171 of the ottoman S4. The central portion 174 of the support surface 171 sandwiched between the projecting portions 173 is covered with the skin SK formed of synthetic leather or cloth as described above. On the other hand, both protrusions 173 are formed of a material such as resin having a hardness higher than that of synthetic leather or cloth, and the surface thereof is formed smoother than the central portion 174 of the support surface 171.

The front end surface 172, which is the free end surface of the ottoman S4, is formed of a material having a hardness higher than that of synthetic leather or cloth, such as resin, as in the above embodiment. On the other hand, the front end surface 172 of the ottoman S4 has many small protrusions similar to those in the above-described embodiment, and has a larger friction with the floor 4 than the protruding end surface of the protrusion 173 (a surface substantially parallel to the support surface 171). Is configured to have a coefficient. The protrusions are also formed on the front end faces of both protrusions 173, and the front end faces of both protrusions 173 are configured to have a larger friction coefficient with respect to the floor 4 than the protrusion end faces of the protrusions 173. Has been done.

In this modification, when the support surface 171 of the ottoman S4 contacts the floor 4, the protrusion 173 contacts the floor 4, and the central portion 174 covered with the skin SK contacts the floor 4. Is prevented. For example, the front end surface 172 of the ottoman S4 shown in (E2) moves to the lower portion 12 of the floor 4 while the state of (E2) of the dive down operation of FIG. 15(E) is changed to the state of (E3). When the supporting surface 171 of the ottoman S4 contacts the lower portion 12 of the floor 4 immediately after contact, the protrusion 173 contacts the floor 4 instead of the central portion 174. In the operation of changing the seat S from the dive-down state to the use state in FIG. 14C, the state shown in (C2), that is, the seat back S2 starts to be raised, and the seat cushion S1 is rotated by the seat base 26. The support surface 171 of the ottoman S4 may come into contact with the lower portion 12 of the floor 4 when it is no longer regulated. In this case as well, the protruding portion 173 comes into contact with the floor 4 instead of the central portion 174.

Even when the protrusions 173 come into contact with the floor 4 as described above, the surfaces of both the protrusions 173 are formed to be smoother than the central portion 174 of the support surface 171, so that the frictional resistance is increased and the protrusions 173 are formed. Wear is suppressed. Moreover, even when the protrusion 173 is dirty, it is easy to clean it.

Next, a modified example of the seat S having the ottoman S4 having the form shown in the above-described embodiment or modified example will be described. In the seat S of this modified example, the angle adjusting mechanism 6 described in the above embodiment with reference to FIG. 12 does not have the torsion coil spring 156 shown by the imaginary line, and the right ottoman side frame 131 is stored. It is not biased toward the position side. Further, in the seat S of the present modification, as shown in FIG. 20, among the two recesses 166 of the detent mechanism 165 that holds the ottoman S4 in the temporary storage position and the storage position, the recess on the right side in the drawing corresponding to the storage position. 166 is formed on the lower side in the drawing than the position of the concave portion 166 of the above embodiment shown by an imaginary line. That is, in this modified example, the storage position of the ottoman S4 is set to a position (rotation angle) farther from the bottom surface of the seat cushion S1 than the storage position of the above embodiment.

Among the operations of the seat S thus configured, when the ottoman S4 of FIG. 15E is in the temporary storage position, the operation of changing the seat S from the use state to the dive-down state, and the operation of FIG. The operation of returning the seat S in the dive-down posture to the used state will be described with reference to FIG.

When changing the seat S from the use state to the dive down state when the ottoman S4 is in the temporary storage position, the occupant operates the handle 68 (FIG. 1) as shown in FIG. 21(E1), The seat back S2 is gripped and pivoted forward as indicated by the arrow. Then, as shown in (E2), the seat cushion S1 moves forward and obliquely downward, and the tip of the ottoman S4 contacts the lower portion 12 of the floor 4. Subsequently, as the seat back S2 rotates forward and the seat cushion S1 moves diagonally forward and downward, a force diagonally upward and backward from the floor 4 is applied to the tip of the ottoman S4, and the holding by the detent mechanism 165 is released. As a result, the ottoman S4 rotates to the storage position side. At this time, since the ottoman S4 is not subjected to the urging force of the torsion coil spring 156 toward the storage position side, the ottoman S4 rotates while the free end slides on the floor 4. Even in the dive-down state of the seat S in which the seat back S2 is completely tilted as shown in (E3), the free end of the ottoman S4 is in contact with the floor 4 as shown in FIG. It becomes the storage position. In this state, the ottoman S4 is held by the detent mechanism 165.

On the other hand, when the seat S in the dive-down posture in which the ottoman S4 is in the storage position is returned to the use state, the occupant operates the handle 68 to indicate the seat back S2 by an arrow, as shown in FIG. 21(C1). So that it can be raised. At this time, since the tip-up mechanism 5 is not locked, the seat cushion S1 does not get up together with the seat back S2 and moves backward so as to be dragged by the seat back S2, as shown in (C2). Further, since the ottoman S4 is held by the detent mechanism 165, the ottoman S4 slides on the floor 4 while being in the storage position. Then, the tip of the stand leg 37 engages with the wall portion 13 of the floor 4 or the seat base 26, and when the occupant rotates the seat back S2 rearward as shown in (C3), the stand leg 37 moves to the floor. The ottoman S4 is separated from the floor 4 by being caught by the wall portion 13 of 4 or the seat base 26, and the stand leg 37 moves to the use position.

When the occupant further rotates the seat back S2 rearward, the stand leg 37 projects into the support groove 35 of the stand base 34, and as shown in (C4), the seat back S2 is fixed at the use position and the seat cushion is formed. S1 is fixed in the seated position. Even in this state, the ottoman S4 is held at the storage position by the holding force of the detent mechanism 165. When the occupant pulls the ottoman S4 in the state shown in (C4) in the direction of the arrow, the holding by the detent mechanism 165 is released, the ottoman S4 rotates, and as shown in (C5), it temporarily hangs down from the front end of the seat cushion S1. It is held by the detent mechanism 165 in the storage position. When the ottoman S4 is not used, the occupant again applies a force in the arrow direction to the ottoman S4 from the state of (C5) to rotate the ottoman S4 to a storage position slightly separated from the bottom surface of the seat cushion S1 shown in (C6). As a result, the ottoman S4 is held at the storage position by the detent mechanism 165.

As described above, in the present modified example, when the ottoman S4 described in FIG. 21E undergoes the dive-down operation of the seat S in the temporary storage position, the ottoman S4 slides on the floor 4 and moves to the first position. 2 Rotate to the storage position. Therefore, the seat S shown in (E2) to (E3) in which the ottoman S4 contacts the floor 4 and rotates to the storage position on the bottom surface side of the seat cushion S1 does not have the torsion coil spring 156. Realized by configuration. In the seat S of this modification, the supporting surface 171 of the ottoman S4 is in sliding contact with the floor 4, so it is preferable to use the ottoman S4 having the protrusion 173 described in the above modification.

Although the specific embodiment has been described above, the present invention is not limited to the above embodiment and can be widely modified and implemented. For example, in the above-described embodiment, the seat S is described for a vehicle as an example, but the seat S may be used for an aircraft or a ship.

Further, in the above-described embodiment, the seat S is a reclining mechanism as a seat back angle adjusting mechanism capable of holding the seat back S2 at a desired angle in all the angular ranges in which the seat back S2 is rotatable as shown in FIG. However, the seat S may not be provided with such a reclining mechanism 3, but the seat back S2 may be held in the use position by the vehicle body or the like when the seat S is in use.

Further, in the above-described embodiment, the seat S includes the engaging recessed portion 101 and the lock member 102 as the seat cushion angle adjusting mechanism capable of maintaining the angle of the seat cushion S1 with respect to the seat back S2 shown in FIG. It is not necessary to provide such a seat cushion angle adjusting mechanism.

In the above embodiment, the ottoman S4 is rotatably provided on the seat cushion S1, but the ottoman S4 may be provided on the seat cushion S1 so as to be deployable by a known link mechanism. Further, the ottoman S4 only needs to be displaceable between the temporary storage position hanging from the front portion of the seat cushion S1 and the deployed position, and need not necessarily be displaceable rearward of the temporary storage position.

For example, if there is no interference with the front row seats, when the seat S performs the dive down operation, it may be displaced in a direction away from the floor 4, that is, in a diagonally upper front direction which is the deployment position side. Such an operation is, for example, an interlocking mechanism for displacing the ottoman S4 to the deployed position side in conjunction with the rotation of the seat back S2, and an ottoman S4 deployed position side in conjunction with an angle change of the seat cushion S1 with respect to the seat back S2. It can be realized by an interlocking mechanism that displaces to. Alternatively, the seat S is provided with an electric displacement means for displacing the ottoman S4, and a detection means for detecting that the ottoman S4 is in proximity to or in contact with the floor 4, and is electrically operated when the proximity or contact is detected by the detection means. The displacing means may drive the ottoman S4 in a direction away from the floor 4.

Alternatively, when the ottoman S4 abuts on the floor 4, an operation of rotating forward by a force received from the floor 4 may be performed. In such a configuration, for example, the storage position (temporary storage position) of the ottoman S4 hanging from the front portion of the seat cushion S1 is set to an angle in which the lower portion is located forward with respect to the vertical direction, and the ottoman S4 stores the storage position. When the seat S performs the dive-down operation in the position, the part where the lower end (free end) of the ottoman S4 first comes into contact with the floor 4 is a forward downward slope and low-friction inclined surface, and the lower end of the ottoman S4 is Can be implemented so as to contact the floor 4 at a shallow angle.

In the above-described embodiment, the torsion coil spring 156 is configured to apply a biasing force to the storage position side regardless of the rotation angle of the ottoman S4. You may comprise so that a biasing force may be received, when it exists in the storage position side rather than a predetermined rotation angle.

Further, in the above embodiment, the protruding portion 173 of the ottoman S4 is configured to extend from the rotation shaft side of the ottoman S4 toward the free end side. However, as long as it is formed at least on the free end side, the free end is formed. A form in which a single or a pair of protrusions 173 is formed in the vicinity, a form in which a plurality of protrusions 173 are formed separately on the left and right sides from the rotation shaft side along the free end side, the rotation shaft side It may be formed on the free end side. Further, the front end surface 172 of the ottoman S4 may be formed of felt manufactured by a needle punching method or the like, so that the protrusion 173 of the support surface 171 may have a larger friction coefficient with respect to the floor 4. ..

In addition, the specific configuration and arrangement of each member or part, the number, the angle, the material, and the like can be appropriately changed within the scope not departing from the gist of the present invention. In addition, not all of the respective constituent elements of the sheet S shown in the above embodiment are essential, and they can be appropriately selected.

4 floor 5 tip up mechanism 26 seat base 37 stand leg 85 cushion side frame 131 ottoman side frame 156 torsion coil spring (biasing means)
165 Detent mechanism 171 Support surface (foot support surface)
172 Front end face 173 Projection part 174 Central part S Seat S1 Seat cushion S2 Seat back S4 Ottoman

Claims (1)

A seat back rotatably attached to the seat base and a seat cushion rotatably attached to the seat back are provided, and the seat cushion is provided in accordance with an operation of rotating the seat back forward. A vehicle seat configured to perform a dive down operation in which the seated position is displaced diagonally forward toward the floor,
In the state where the seat cushion is in the seated position, the seat cushion is displaceable between a first storage position that hangs down from the front part of the seat cushion and a deployed position that extends forward from the front part of the seat cushion. Further having an ottoman provided in
The vehicle seat according to claim 1, wherein the ottoman can take a second storage position that does not interfere with the floor when the dive down operation is performed in the first storage position.

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