JP2022093554A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: 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

COPYRIGHT: (C)2022,JPO&INPIT

Description

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

In recent years, many vehicle seats 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 part of the floor, the seat cushion is attached so that it can be flipped up to the seat back side, and the seat back is flipped up to the seat back side. There is known a 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 part of the floor in front of the upper part of the floor by tilting the seat forward (Patent Document 1).

Japanese Patent No. 4263628

By the way, when an ottoman is provided on the seat cushion in a vehicle seat capable of dive-down operation, if the ottoman is performed while the ottoman is in the deployed position, the ottoman interferes with the floor and dive-down. There is a risk that the operation will not be possible. 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, which is complicated.

In view of the above background, the present invention facilitates an operation of changing to a dive-down posture while the ottoman is in the deployed position in a vehicle seat capable of dive-down operation and having an ottoman on the seat cushion. That is the issue.

In order to solve the above problems, a seat back (S2) rotatably attached to the 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 diagonally forward from the seating position toward the floor (4) in response to the operation of the seat back rotating forward. With the seat cushion in the seated position, the seat cushion can be displaced between the first storage position hanging from the front portion of the seat cushion and the unfolding position extending forward from the front portion of the seat cushion. It further has an Ottoman (S4) provided on the seat cushion, and the Ottoman takes a second storage position that does not interfere with the floor when the dive-down operation is performed while the Ottoman is in the first storage position. Provided is a vehicle seat characterized by obtaining. Here, "does not interfere" is intended to not interfere with the dive-down operation, although it may come into contact with the floor.

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 ottoman is displaced to the second storage position in advance. The dive-down operation can be performed without the need for a dive-down operation, and the operation of changing the seat to the dive-down posture becomes easy.

Further, in the above invention, the ottoman is provided on the seat cushion so as to be rotatable around an axis extending in the lateral direction, and the dive-down operation is performed in the state of being in the first storage position. At that time, the structure may be provided 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 configuration, 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 configuration and at a lower cost.

Further, 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.

According to this configuration, the ottoman in the first storage position can be easily rotated to the second storage position side by the force received from the floor. Therefore, the rotation angle of the first storage position can be set to be behind the vertical or vertical, which is less likely to interfere with the occupant.

Further, in the above invention, the ottoman is subjected to the urging force on the second storage position side by the urging means (156) when the ottoman is at least closer to the second storage position side than the predetermined rotation angle. It can be configured to be.

According to this configuration, the ottoman can be held in the second storage position when the seat is returned from the dive-down state to the used state.

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

According to this configuration, the ottoman's foot support surface does not come into contact with the floor when the seat performs a dive-down operation or is in the dive-down posture, so that the ottoman's foot support surface can be prevented 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 sliding in contact with the floor when the dive down operation is performed while the ottoman is in the first storage position. Can be done.

According to this configuration, it is possible to realize a seat in which the ottoman abuts on 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, the ottoman may be further provided with a detent mechanism (165) for holding the ottoman in the first storage position with a sense of moderation.

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 is urged to the second storage position side by the urging means, the ottoman can be kept in the first storage position by the detent mechanism.

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

According to this configuration, the ottoman can be held in the second storage position even when the seat is in the dive-down posture. Further, when the seat is returned from the dive-down state to the used state, the ottoman can be held in the second storage position.

Further, in the above invention, the protrusion (173) may be formed on the free end side of the foot support surface (171) of the ottoman.

According to this configuration, when the seat is in the dive-down posture, the foot support surface of the ottoman other than the protrusion does not come into contact with the floor, so that dirt on the floor is prevented from adhering to the foot support surface other than the protrusion. can.

Further, in the above invention, the protruding portion (173) may be formed at the left and right ends of the foot support surface of the ottoman from the free end side to the rotation axis side.

According to this configuration, when the seat is in the dive-down posture, the central part of the foot support surface of the ottoman does not come into contact with the floor, so that the floor is soiled to the central part of the foot support surface and the central part becomes dirty. Can be prevented.

Further, in the above invention, the left and right protruding portions of the ottoman are made of a material having a higher hardness than the central portion (174) of the foot support surface, and are smoother than the central portion of the foot support surface. It can be configured to be formed in.

According to this configuration, since the protruding portion of the ottoman is formed to be smoother than the central portion of the foot support surface, it is easy to clean the protruding portion when it becomes dirty. In addition, the protruding part of the ottoman is easier to contact the floor than the central part of the foot support surface, but since it is made of a material with higher hardness than the central part, it is smoothly formed, so frictional resistance is increased by contact with the floor. It is possible to prevent the protrusion from becoming large and the protruding portion from being worn.

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

The front end surface of the ottoman in the first storage position hanging from the front part of the seat cushion comes into contact with the floor during the dive down operation. Therefore, with such a configuration, the front end surface can reliably receive the force toward the second storage position side at the time of 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 outside the front portion of the cushion side frame in the left-right direction. It can be configured to have a frame (131).

According to this configuration, since the ottoman side frame does not overlap with the cushion side frame in the left-right direction, the thickness dimension of the seat cushion and the ottoman in the state where the ottoman is in the second storage position can be reduced.

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

According to this configuration, the thickness dimension 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 a vehicle seat in which a dive-down operation is possible and the ottoman is provided on the seat cushion, it is possible to facilitate an operation of changing the ottoman to the dive-down posture while the ottoman is in the deployed position. ..

Perspective view of the vehicle seat according to the embodiment Perspective view of the seat frame of the vehicle seat Right side view of the seat frame of the vehicle seat Top view of the seat base of the vehicle seat Top view of the seat frame of the vehicle seat Rear view of the seat frame of the vehicle seat Perspective view of the vehicle seat from the front lower side Schematic cross section of the stand base Schematic diagram of reclining mechanism Schematic diagram of tip-up mechanism An exploded perspective view of the ottoman Schematic diagram of the ottoman angle adjustment mechanism Schematic diagram of the ottoman detent mechanism Operational diagram of vehicle seat Operational diagram of vehicle seat Perspective view of the ottoman Top view of the seat frame when the stand legs and ottoman are in the stowed position Side view of vehicle seat in dive down state Perspective view of the ottoman according to the modified example Schematic diagram of the ottoman detent mechanism of the vehicle seat according to the modified example Operation explanatory diagram of the vehicle seat according to the modified example Side view showing the dive-down state of the vehicle seat according to the modified example

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following explanation, the left and right are determined based on the person seated on the seat S. Further, when explaining the direction of each part or the like, the time when the seat S is seated is used as a reference. For configurations that are provided in pairs on the left and right, a common number is assigned, and when specifying the left and right, the letters on the left or right are attached to the name of the configuration.

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

As shown together with FIG. 2, the 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 constitutes the cushion frame F1 constituting the frame of the seat cushion S1, the back frame F2 constituting the frame of the seat back S2, the headrest frame F3 constituting the frame of the headrest S3, and the frame of the ottoman S4. It has an ottoman frame F4.

The seat cushion pad P1, the seat back pad P2, the headrest pad P3, and the ottoman pad P4 are on the seat surface side of the cushion frame F1, the backrest surface side of the back frame F2, the headrest frame F3, and the support surface side of the ottoman frame F4, respectively. Is attached and covered by the epidermis SK. Each pad P is formed of an elastic cushioning material such as polyurethane foam. Each epidermis SK is formed of synthetic leather, fabric, or the like. A cover made of a resin material is 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 bottom surface, the back surface, and the back surface of each 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 with respect to the floor 4 and is 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 attached to the back frame F2 so as to be slidable. The ottoman frame F4 is attached to the cushion frame F1 so as to be slidable. Further, the ottoman frame F4 has an angle adjusting mechanism 6, and the angle can be adjusted.

As shown in FIG. 3, the floor 4 has a high-level portion 11 in which the slide mechanism 2 is installed, and a low-level portion 12 formed on the front side and the lower side of the high-level portion 11. A wall portion 13 rising 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 with the high-level portion 11 as a reference. The surface of the floor 4 is covered with an interior material made of a non-woven fabric or the like manufactured by a needle punching method. The surface of the lower portion 12 of the floor 4 is covered with a floor mat installed on the interior material.

As shown in FIGS. 4 to 7, the slide mechanisms 2 are provided in pairs on the left and right sides of 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. As the slide mechanism 2, various known mechanisms can be applied. Each lower rail 15 is arranged on the high portion 11 (FIG. 3) of the floor 4 so as to extend back and forth at a distance from each other in the left-right direction. Each lower rail 15 is joined to the floor 4 by bolting or the like. The upper rail 16 is engaged so as to be slidably movable in the longitudinal direction of the lower rail 15.

A plurality of lock holes (not shown) are formed in each lower rail 15 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 urged to the side that engages with the lock hole by a spring (not shown) as an urging means. Therefore, normally, the rail lock member 17 urged by the spring maintains engagement with the lock hole, and the movement of the slide member 21 is restricted. When the rail lock member 17 rotates against the urging force of the spring due to the operation of the occupant, the engagement between the rail lock member 17 and the lock hole is released, and the upper rail 16 can be moved.

A slide member 21 is joined to each of the left and right upper rails 16. 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 back and forth on the upper rail 16. The front ends of the left and right slide members 21 are connected to each other by the slider front member 23, the rear ends are connected to each other by the slider rear member 24, and the intermediate portions in the front-rear direction are connected to each other by the 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 to the left and right 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 back and forth with respect to the lower rail 15 as a unit.

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 the locked state and the released state, and is normally locked by receiving the urging force of the spring that urges the rail lock member 17. The link member allows engagement between the left and right rail lock members 17 urged by the spring and the lock hole in the locked state. When the link mechanism 28 is released from the locked 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 separated from the lock hole against the urging force of the spring. As will be described in detail later, one end of the first rail cable 31 and the second rail cable 32 as force transmission means is locked to the link mechanism 28. The link mechanism 28 is brought into the released state 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 hung on the slider front member 23 and the slider intermediate member 25. The stand base 34 is formed by press-molding a metal plate or the like, and is welded to the central portion of the slider front member 23 in the left-right direction at the front end portion and to the central portion of the slider intermediate member 25 in the left-right direction at the rear end portion. Has been done. A support groove 35 extending in the left-right direction and reaching both left and right ends of the stand base 34 is formed on the upper portion of the stand base 34. The support groove 35 is open upward and toward the front side. The support groove 35 supports the stand leg 37, which will be described later.

A locking claw 41 is rotatably attached to the stand base 34. The locking claw 41 is a plunge position where the locking claw 41 rushes into the support groove 35 from the side portion of the support groove 35, which is shown by a solid line in FIG. And the retracted position retreated to the outside of the support groove 35, which is shown by an imaginary line in FIG. A torsion spring 42 as a urging means is interposed between the stand base 34 and the locking claw 41, and the locking claw 41 is urged to the inrush position. The locking claw 41 locks the lateral member 94 of the stand leg 37, which will be described later, at the intrusion position, and prevents the lateral member 94 from coming off from the support groove 35. The outer portion of the locking claw 41, that is, the portion facing the open end side of the support groove 35 when the locking claw 41 is in the entry position is formed on an inclined surface.

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

As shown in FIGS. 2, 5 and 6, the back frame F2 is formed by welding the pipe frame 45 formed in the shape of a vertically long rectangular frame and the lower portions of the left and right side portions extending vertically of the pipe frame 45, etc. It has left and right backside frames 46 joined by. The left and right backside frames 46 are formed by pressing a metal plate or the like. The left and right backside frames 46 have concave surfaces that are curved so as to hold the outer surface at the lower part of the left and right side sides of the pipe frame 45, and are joined to the left and right side sides of the pipe frame 45 by welding or the like. There is. The lower portions of the left and right back side frames 46 extend downward from the lower ends of the left and right side sides. Further, a part of the left and right backside frames 46 extends to the lower side portion of the pipe frame 45 and is joined by welding or the like. Further, a reinforcing plate 47 joined by welding or the like is hung between the left and right backside frames 46 and the lower side portion of the pipe frame 45 to reinforce the back frame F2. The upper portion of the reinforcing plate 47 cooperates with the backside frame 46 and the pipe frame 45 to form a hollow three-dimensional structure, and the lower portion extends downward along the backside frame 46.

The lower portions of the left and right backside frames 46 have side surfaces facing in the left-right direction. The lower left surface of the left backside frame 46 faces the right surface of the left slide member 21 and is rotatably connected. As shown in FIGS. 5 and 7, the left side surface of the lower part 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 passes through the reclining mechanism 3. It is rotatably connected to. The rotation axes of the left and right backside frames 46 are arranged coaxially with each other.

The reclining mechanism 3 can maintain the rotation (tilt) 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 makes it possible to change the rotation angle of the right backside frame 46 with respect to the right slide member 21 when the release lever 51 is operated. As such a reclining mechanism 3, various known mechanisms can be applied.

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 joined to the lower part of the right side frame, and is arranged to face the lower plate 52. Arranged in the internal space formed between the upper plate 53 that can rotate with respect to the lower plate 52, the connecting shaft 54 that penetrates the rotation center of the lower plate 52 and the upper plate 53, and the upper plate 53 and the lower plate 52. A cam plate 55 that rotates integrally with the connecting shaft 54, a plurality of lock members 56 arranged in the internal space, and a torsion spring 57 as an urging means for urging the cam plate 55 in one rotational direction. And have. The lock member 56 engages with the 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 radial inner portion, an outer tooth 59 in the radial outer portion, and an inner circumference forming an internal space of the upper plate 53 when moved radially outward. It engages with the internal 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 rotational direction, and moves the lock member 56 radially outward when rotating in the other rotational direction. Move to the direction. 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 portion thereof.

In the reclining mechanism 3, the cam plate 55 is normally urged in one direction of rotation by the torsion spring 57, the lock member 56 moves radially outward, and the outer teeth 59 of the lock member 56 are the upper plate 53. Engage with the internal tooth 61. 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 rotation of the upper plate 53 with respect to the lower plate 52 is prohibited by the urging force of the torsion spring 57. 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 is released. It moves inward in the radial direction, and the engagement between the outer teeth 59 of the lock member 56 and the inner teeth 61 of the upper plate 53 is released. This enables the relative rotation of the lower plate 52 and the upper plate 53. One end of a reclining cable 63 (FIGS. 3 and 7) as a force transmitting means is locked to the release lever 51. The release lever 51 rotates in the release direction by pulling the reclining cable 63.

As shown in FIGS. 2, 3 and 5, a bracket 66 that supports the handle unit 65 is joined to the upper end of the right side of the pipe frame 45 by welding or the like. The handle unit 65 has a case 67 that opens 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 thereof are notched in a portion corresponding to the handle unit 65. As a result, the handle 68 is exposed to the upper right portion of the seat back S2 and can be operated by the occupant.

The handle 68 has the other end of the locking claw cable 43, one end of which is locked to the locking claw 41 (FIG. 8), and the reclining cable 63, one end of which is locked to 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 tubular outer tube. The outer tube 71 for locking claws, which holds the cable for locking claws 43, is mainly described with reference to FIG. 5, although detailed layout is omitted. One end of the outer tube 71 is fixed to the stand base 34 and a right slide member. It extends to the 21 side, extends upward along the right side 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, one end of the reclining outer tube 72 holding the reclining cable 63 is fixed to the right side surface of the right backside frame 46, and is attached to the right side of the right backside frame 46 and the pipe frame 45. It extends upward along and the other end is fixed to the bracket 66. The outer tube 71 for locking claws and the outer tube 72 for reclining are bound to the right side 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) moves from the entry position to the retracted position. It rotates and the stand leg 37 is unlocked by the locking claw 41. At the same time, the reclining cable 63 is pulled toward the handle 68, the release lever 51 (FIG. 3) rotates in the release direction, and the reclining mechanism 3 is unlocked.

As shown in FIGS. 2 and 3, an armrest bracket 76 that supports the armrest 75 is joined to the left side of the pipe frame 45 by welding or the like. The armrest bracket 76 projects forward from the left side 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 cylindrical shape, and a support 79, which is a resin tubular member, is inserted therein. 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 of metal rods are welded to appropriate positions of the pipe frame 45. The auxiliary frame 82 is hung between the left and right side sides, is arranged so as to project from the left side to the left, and is arranged so as to project from the right side to the right. Including things. The auxiliary frame 82 fills 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. It has a cushioned rear member 87 that connects the rear portions of the 85. The left and right cushion side frames 85 are formed by pressing a metal plate or the like, and are bent so that the main surface faces left and right and the edges project outward to the left and right. The rear ends of the left and right cushion side frames 85 are bent with respect to the front portion extending back and forth, and extend backward and upward. The cushion rear member 87 is provided at a bent portion 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 projecting to the right and having a flat projecting end is formed on the upper portion of the right backside frame 46. 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 forming a gap with the support plate 89 is formed. The support plate 89 is a metal plate whose main surface faces left and right and extends vertically, and its upper end is joined to the fastening seat 88. The lower part 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 arranged 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, respectively, and are arranged coaxially with each other.

Returning to FIGS. 2 and 5, a center support member 91 extending back and forth is hung on the cushion front member 86 and the cushion rear member 87. The center member is a member that supports the seat cushion pad P1 and the buttocks of the occupant from below in the central portion of the cushion frame F1, and is preferably elastic. In the present embodiment, the center support member 91 is a plate (center plate) formed by press-molding a metal plate or the like, with the main surface facing 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 is welded to the central portion in the left-right direction of the cushion rear member 87 at the rear end portion. The width of the center support member 91 in the left-right direction is about 1/3 of that of the cushion front member 86. The center support member 91 is provided with a reinforcing bead and a lightening for weight reduction at an appropriate position. In another embodiment, the center support member 91 may be composed of an elastic member such as a wire spring. Further, a plurality of center support members 91 may be provided in the width direction.

As shown in FIG. 7, the stand legs 37 are rotatably attached to the left and right cushion side frames 85. The stand legs 37 are rotatably attached to the left and right cushion side frames 85 at one end, and a pair of left and right arms 93 extending to the other end, and a horizontal member 94 connecting the other ends of the left and right arms 93. The outer shape is formed in a substantially U shape. Most of the left and right arms 93 and the lateral member 94 are formed by bending a metal pipe in a substantially U shape. One end 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 legs 37 (FIG. 3), the horizontal member 94 is close to the lower surface of the center support member 91, the arm 93 is along the cushion side frame 85, and the storage position shown by the imaginary line and the arm 93 are. It is rotatable between the cushion side frame 85 and the position shown by the solid line, which protrudes downward. The stand legs 37 are arranged on the outside of 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. By locking the stand leg 37 to the support groove 35, the seat cushion S1 is supported from below by the stand leg 37, 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, so that the rotation from the use position to the storage position is restricted. That is, by locking the stand leg 37 to the support groove 35, the rotation 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, and the locking claw 41 is pushed from the entry position against the urging force of the torsion spring 42. 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 entry position by the urging force of the torsion spring 42. The locking claw 41 locks the lateral member 94 at the entry position and prevents the lateral member 94 from coming off from the support groove 35. When it is desired to separate the pipe portion from the support groove 35, the occupant operates the handle 68 (FIG. 1) to position the locking claw 41 in the retracted position via the locking claw cable 43.

As shown in FIGS. 3, 5 and 6, a 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 rotates upward from the seating position, and rotates the seat cushion S1 with respect to the seat back S2. It is a device that fixes the position. As such a chip-up mechanism 5, various known mechanisms can be applied.

As shown in FIG. 10, the tip-up mechanism 5 as an example according to the present embodiment has an engaging recess 101 formed at the edge of the lower end of the support plate 89 and a right side of the right cushion side frame 85. A lock member 102 that is rotatably attached to the surface and can be displaced between the engagement position indicated by the imaginary line that engages with the engagement recess 101 and the release position indicated by the solid line that is separated from the engagement recess 101, and the lock. A rubber (not shown) provided between the member 102 and the right cushion side frame 85 as a urging means for urging the lock member 102 to the engaging position, and the right cushion side frame 85 can be rotated to the right side surface. Between the first position shown by the solid line that engages with the lock member 102 and positions the lock member 102 at the release position, and the second position shown by the imaginary line that disengages the lock member 102. It has 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 urging means for urging the cam member 103 to a second position. is doing.

At least one or more engaging recesses 101 are provided. One of the engaging recesses 101 is located at the limit position (referred to as a tip-up position) in which 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 it can be engaged when it is closest to the support surface (front surface) of the. 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 engaging recess 101 may be formed at an arbitrary angle between the seating position of the seat cushion S1 and the tip-up position at a position where the lock member 102 can be engaged. As a result, when the right cushion side frame 85 is rotated upward with respect to the support plate 89, the tip-up mechanism 5 causes the lock member 102 urged by the tension coil spring 104 at a predetermined rotation position to engage the engaging recess 101. Engage with and keep the right cushion side frame 85 at a predetermined angle.

The engaging 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 rotation of the right cushion side frame 85 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 allowed to be detached, and the right cushion side frame 85 is allowed to rotate with respect to the support plate 89. You may. According to this configuration, even after engaging the engaging recess 101 with the lock member 102, the right cushion side frame 85 can be rotated upward, and when the right cushion side frame 85 is further rotated upward. The lock member 102 engages with the next engaging 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 indicated by the imaginary line.

When the cam member 103 rotates against the urging force of the tension coil spring 104 to the first position shown by the solid line 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. One end of a first chip-up cable 106 and a second chip-up cable 107 as force transmission means is connected to the cam member 103. 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. Being embraced as much as possible.

The first chip-up outer tube 108 is attached so that one end thereof faces 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 first tip-up outer tube 108 extends forward from one end along the right side surface of the right cushion side frame 85, passes through the lower part of the front end of the right cushion side frame 85, and passes through the lower part of the front end of the right cushion side frame 85. 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 chip-up outer tube 108 is fixed to the bracket 111 so that the opening faces rearward. The other end of the first chip-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 of the first chip-up cable 106 (the end of the right arm 93) is the first chip-up outer tube 108. The other end of the first chip-up cable 106 (the end of the right arm 93) is the first chip-up when the first chip-up cable 106 is slackened close to the other end of the cable and is located at the position shown by the solid line. The first tip-up cable 106 is pulled away from the other end of the outer tube 108. That is, when the stand leg 37 is in the used position, the cam member 103 is pulled by the first chip-up cable 106 and is located 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 outer tube 109 for second tip-up is attached so that one end thereof faces 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 part of the middle portion in the front-rear direction of the right cushion side frame 85, and then to the right. Along the left side surface of the cushion side frame 85, it extends in the vicinity of the rotation axis of the right cushion side frame 85. After that, as shown in FIGS. 3 and 6, the second chip-up outer tube 109 wraps around behind the right backside frame 46 from the vicinity of the rotation axis of the right cushion side frame 85, and the right backside frame 46. Along the reinforcing plate 47 arranged on the left side of the right backside frame 46, it extends in the vicinity of the rotation axis of the right backside frame 46. The other end of the second tip-up outer tube 109 faces downward to the protruding portion 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 for fixing the other end of the second tip-up outer tube 109, and is formed so as to protrude to a position where it overlaps with the right slide member 21 in the left-right direction, and is formed on the right back side. When the frame 46 rotates backward, it comes into contact with the right slide member 21, and thus functions as a stopper for restricting further backward rotation of the right backside frame 46.

The positions of the other end of the second chip-up cable 107 and the other end of the second chip-up outer tube 109 are for the second chip-up as the seat back S2 tilts forward from the standing state with respect to the floor 4. The other end of the cable 107 is set so as to be separated from the other end of the second chip-up outer tube 109. As a result, the second chip-up cable 107 is pulled toward the other end as the seat back S2 tilts forward, and when the forward tilt of the seat back S2 becomes a predetermined angle or more, the cam member 103 (FIG. 10) becomes the second. It is pulled by the tip-up cable 107 and is 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 chip-up cable 106 and the first chip-up outer tube 108, and the second chip-up cable 107 and the second chip-up outer tube 109 are chips that unlock the chip-up mechanism 5, respectively. The uplock cancel mechanism 113 is configured.

Since the first chip-up cable 106 and the second chip-up cable 107 are connected to the cam member 103, the cam member 103 is at least one of the first chip-up cable 106 and the second chip-up cable 107. Is located in the first position while being pulled toward the other end, and the lock member 102 is located in the unlocked position. In other words, both the first chip-up cable 106 and the second chip-up cable 107 are in a loosened state, that is, the forward tilt angle of the seat back S2 is equal to or less than a predetermined value (that is, in an upright state), and the stand leg 37. Is located in the stowed position, the cam member 103 is in the second position as shown by the imaginary line in FIG. 10, and the lock member 102 can be engaged with the engaging 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 cable 31 for the first rail is slidably held by the tubular outer tube 114 for the first rail, and the cable 32 for the second rail is the tubular outer tube 115 for the second rail. It is held slidably by. One end of the outer tube 114 for the first rail and the outer tube 115 for the second rail is locked to the immovable portion of the link mechanism 28, and one end of the cable 31 for the first rail and the cable 32 for the second rail is the link mechanism 28. It is locked to the movable part. In another example, one end of the outer tube 114 for the first rail and the outer tube 115 for the second rail may be locked to the slider intermediate member 25 or the slider rear member 24.

The outer tube 114 for the first rail extends from one end to the left side surface of the right backside frame 46, and then, as shown in FIG. 6, upward along the left side surface of the right backside frame 46, the right cushion side frame 85. It extends to the vicinity of the rotation axis of. Then, the outer tube 114 for the first rail wraps around behind 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. After that, as shown in FIG. 5, the outer tube 114 for the first rail extends forward along the left side surface of the right cushion side frame 85 to the cushion rear member 87, passes under the center support member 91, and diagonally to the left. It extends forward and extends to the bracket 117 joined to the lower front end of the left cushion side frame 85. The other end of the outer tube 114 for the first rail 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 grip member 118 is attached. The cable 31 for the first rail, the outer tube 114 for the first rail, and the first gripping member 118 constitute an operating member for unlocking the slide mechanism 2.

The outer tube 115 for the second rail extends rearward while forming a loop from one end, and extends to the bracket 121 joined to the rear member 24 of the slider. The other end of the outer tube 115 for the second rail 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 grip member 122 is attached. The cable 32 for the second rail, the outer tube 115 for the second rail, and the second gripping member 122 constitute an operating member for unlocking the slide mechanism 2.

The first gripping member 118 and the second gripping member 122 are straps including a woven fabric, a string, a rope, and the like, and have flexibility. In the present embodiment, the first gripping member 118 and the second gripping member 122 are formed in a loop shape by folding back a band-shaped band. As shown in FIGS. 1 and 7, a passage (not shown) through which the first gripping member 118 penetrates back and forth is formed in the front portion of the seat cushion pad P1 (FIG. 2), and the front end surface of the seat cushion pad P1 is formed. A grommet 127 is attached to the skin SK of the 125 to define a hole through which the first gripping member 118 penetrates. As a result, the tip end portion of the first gripping member 118 passes through the grommet 127 and protrudes from the front end surface of the seat cushion S1.

The occupant can pull the first rail cable 31 by gripping the first gripping member 118 and pulling it by pulling it out from the seat cushion S1. Further, the occupant can pull the second rail cable 32 by gripping the second grip member 122 and pulling it backward. When at least one of the first rail cable 31 and the second rail cable 32 is pulled, the link mechanism 28 is released from the locked state, the left and right rail lock members 17 are released from the respective lock holes, and the lower rail 15 is engaged. On the other hand, the upper rail 16 becomes movable. That is, the seat S attached to the upper rail 16 can move 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 to the left and right and a base end portion rotatably attached to the left and right ends of the base member 130, respectively, from the base end portion. It has a pair of left and right ottoman side frames 131 extending to the tip and an ottoman front member 132 extending left and right to connect the tips of the left and right ottoman side frames 131, and is formed in a rectangular frame shape. A plurality of ottoman auxiliary members 134 connecting the left and right ottoman side frames 131 are hung 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, and the main surfaces thereof 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 at intervals on the left and right. The left and right ottoman pillars 135 are formed from solid metal rods, separated from each other in the left-right direction, and extend parallel to 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 a skin SK. The ottoman pad P4 (FIG. 2) has a substantially rectangular outer shape, and is attached so as to cover the tip side of the left and right ottoman side frames 131 excluding the base end, the ottoman front member 132, and the ottoman auxiliary member 134, and the outer shape is rectangular. Is formed in. The skin SK of the ottoman S4 is provided so as to cover the ottoman pad P4, the tip side of the left and right ottoman side frames 131 excluding the base ends, the ottoman front member 132, and the ottoman auxiliary member 134. The base ends 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) formed of resin or the like, and the left and right ottoman side frames 131 and the base member 130 are attached. 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 both ends of a quadrangular cross section open. The pillar support portion 141 is a portion of the cushion front member 86 that corresponds between the left cushion side frame 85 and the left edge of the center support member 91, and between the right cushion side frame 85 and the right edge of the center support member 91. It is provided in the part corresponding to. The pillar support portion 141 is arranged so that the axis extends back and forth below the cushion front member 86, and the upper portion of the pillar support portion 141 rushes into the front and rear extending recess 143 formed in the lower part of the cushion front member 86, and welding or the like is performed in the recess 143. 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 support 142 attached to the pillar support portion 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, the locking member 147 is displaceably received at the front end portion of the support 142. The locking member 147 can be displaced between the entry position where the support 142 enters the inner hole and the retracted position where the support 142 separates from the inner hole, and is urged to the entry position by an urging member (not shown). One end of the locking member 147 projects outward from the side of the front end of the support 142 to form an operating unit 148 that can be operated by an occupant. The occupant can displace the locking member 147 from the entry 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 the storage position (see FIG. 14 (A1)) and the fully deployed position (see the imaginary line in FIG. 15 (D3)). .. A temporary storage position (see FIG. 15 (D1)) is set between the storage position and the most deployed position. In the storage position, most of the ottoman S4 is arranged below the seat cushion S1, and the back surface of the ottoman S4 faces the lower surface of the seat cushion S1. In the temporary storage position, the ottoman S4 is held in a state of being substantially vertically hung from the base member 130. At the most deployed position, the ottoman S4 projects forward with respect to the seat cushion S1, and the support surface of the ottoman S4 faces substantially 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. The angle adjusting mechanism 6 allows the Ottoman S4 to rotate clockwise with respect to the base member 130 of the right Ottoman side frame 131 (rotation to the most expanded position side) when the Ottoman S4 is viewed from the left, and also allows 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. Further, the angle adjusting mechanism 6 rotates the right ottoman side frame 131 clockwise with respect to the base member 130 until the storage position is reached after the rotation of the ottoman side frame 131 with respect to the base member 130 reaches the maximum deployment position. Tolerate. As such an angle adjusting mechanism 6, various known mechanisms can be applied.

As shown in FIG. 12, the angle adjusting mechanism 6 as an example according to the present embodiment can rotate to the ratchet teeth 151 integrally fixed to the outer peripheral portion of the base member 130 and the left side surface of the right Ottoman side frame 131. A screw attached to the ratchet tooth 151 and provided between the claw body 152 and the left side surface of the claw body 152 and the right Ottoman side frame 131 to urge the claw body 152 toward the ratchet tooth 151. It has a shear spring 153, a cam body 154 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 always urges the right ottoman side frame 131 to the storage position side is provided. By engaging the claw body 152 with the ratchet teeth 151, the rotation of the right ottoman side frame 131 with respect to the base member 130 toward the storage position side is prevented. When the right ottoman side frame 131 rotates toward the most deployed position with respect to the base member 130, the claw body 152 can be disengaged from the engaged ratchet tooth 151 and engages with the adjacent ratchet tooth 151. Can be done.

The cam body 154 has a large diameter portion 157 protruding outward in the radial direction of the base member 130 from the protruding end of the ratchet tooth 151, and recessed inward in the radial direction of the base member 130 from the bottom circle of the ratchet tooth 151. It has a small diameter portion 158. The claw body 152 can engage with the ratchet teeth 151 when the small diameter portion 158 of the cam body 154 faces, and abuts on the large diameter portion 157 when the large diameter portion 157 of the cam body 154 faces. It cannot engage with the ratchet tooth 151. When the claw body 152 faces the small diameter portion 158 of the cam body 154, it abuts on the boundary portion between the small diameter portion 158 and the large diameter portion 157, and rotates the right ottoman side frame 131 with respect to the base member 130 toward the most deployed position side. The cam body 154 is rotated according to the above. When the rotation of the right ottoman side frame 131 with respect to the base member 130 progresses toward the most deployed position and reaches a predetermined angle near the most deployed position, the protrusion 155 engages with the first stopper surface 161 of the cam body 154 to form a cam body. Rotation of the 154 with respect to the base member 130 is restricted. As a result, the claw body 152 rotates relative to the cam body 154 and rides on the outer periphery of the large diameter portion 157. In this state, the claw body 152 cannot engage with the ratchet teeth 151, and the right ottoman side frame 131 can rotate with respect to the base member 130 on the storage position side.

While the claw body 152 rides on the outer periphery of the large diameter portion 157 and the right Ottoman side frame 131 rotates toward the storage position with respect to the base member 130, the cam body 154 receives frictional force from the claw body 152 and claws. It rotates with respect to the base member 130 together with the body 152 and the right Ottoman side frame 131. When the rotation of the right ottoman side frame 131 with respect to the base member 130 proceeds toward the storage position 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. This restricts the rotation of the cam body 154 with respect to the base member 130. As a result, the claw body 152 rotates relative to the cam body 154, and the claw body 152 moves from the outer periphery of the large diameter portion 157 to a position facing the small diameter portion 158. In this state, the claw body 152 can be engaged with the ratchet tooth 151 again, and when the right Ottoman side frame 131 rotates toward the most deployed position with respect to the base member 130, the claw body 152 engages with the ratchet tooth 151. It fits.

The detent mechanism 165 holds the ottoman S4 at a predetermined rotation position with a sense of moderation, that is, half-locks the ottoman S4 with a larger holding force than the rotation positions before and after the ottoman. The detent mechanism 165 is configured to hold the ottoman S4 at two locations, a temporary storage position and a storage position. As such a detent mechanism 165, various known mechanisms can be applied. In the present embodiment, as shown in FIG. 13, a recess 166 is formed on the outer peripheral surface of the base member 130, and a half-lock member 167 is provided on the ottoman side frame 131 so as to be slidable and engageable with the recess 166 to urge the ottoman. The half-lock member 167 is urged toward the base member 130 by the means 168. The engaging surface of the recess 166 and the half-lock member 167 is formed on a curved surface or an inclined surface. In this 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 when a predetermined rotational load is applied to the base member 130 and the ottoman side frame 131. The half-lock member 167 and the recess 166 are disengaged. This rotational load is set to a value larger than the rotational load due to the own weight of the ottoman S4 and the rotational load due to the urging force of the torsion coil spring 156.

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

FIG. 14 (A1) shows the usage state of the seat S in which the seat back S2 is in the use position, the seat cushion S1 is in the seating 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, grasps the seat cushion S1 as shown by the arrow, and flips it up to the seat back S2 side, it becomes (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 in a used position protruding 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 chip-up cable 106, so that the lock member 102 is located at the release position, and the rotation 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 rotation position of the seat cushion S1 is fixed, and the seat cushion S1 is a tip. 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, as shown in (B2), the stand leg 37 disengages from the support groove 35 (FIG. 8) of the stand base and moves forward. Further, the stand leg 37 is tilted by rotating the seat back S2 so as to be tilted forward, and as shown in (B3), the seat cushion S1, the seat back S2 and the ottoman S4 are the lower portions 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 chip-up cable 106 (FIG. 10) is loosened, but the seat back S2 is tilted forward by a predetermined angle or more, so that the chip-up mechanism The cam member 103 of 5 is pulled by the second chip-up cable 107, the lock member 102 is located at the release position, and the rotation position of the seat cushion S1 with respect to the seat back S2 is not fixed.

As shown in (A3), when the seat S is in the tip-up posture, the handle 68 is operated to unlock the reclining mechanism 3, and the seat back S2 is combined with the seat cushion S1 as shown by the broken line 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 used state, as shown in (C1), the occupant operates the steering wheel 68 to unlock the reclining mechanism 3 and raises the seat back S2 as shown by the arrow. Rotate to. At this time, since the lock by the tip-up mechanism 5 is not applied, as shown in (C2), the seat cushion S1 does not rise together with the seat back S2, but moves backward so as to be dragged by the seat back S2, and the stand leg 37. The tip of the seat engages with the wall portion 13 or the seat base 26 of the floor 4. As shown in (C3), when the occupant rotates the seat back S2 backward as it is, the stand leg 37 is caught by the wall portion 13 or the seat base 26 of the floor 4 and is caused to move to the used position. When the occupant further rotates the seat back S2 backward, the lateral member 94 (FIG. 8) of the stand leg 37 rushes into the support groove 35 of the stand base 34 while pushing away the locking claw 41, as shown in (C4). As described above, the seat back S2 is fixed at the used position and the seat cushion S1 is fixed at the seating position. Since the stand leg 37 is raised and the bottom surface of the seat cushion S1 is separated from the floor 4, the ottoman S4 does not engage with the wall portion 13 of the floor 4, and when the seat S is in the seated state shown in (C4), it is screwed. It is held in the storage position by the urging force of the squeeze coil spring 156 and the holding force of the detent mechanism 165.

The occupant can rotate the ottoman S4 in the direction of the arrow from the state shown in (C4) and move it to the temporary storage position where the ottoman S4 hangs down as shown in (C5). The ottoman S4 is held in the temporary storage position by the detent mechanism 165. Since the angle adjusting 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 facing the bottom surface of the seat cushion S1 shown in (C6) with the urging force of the torsion coil spring 156. 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 state where it is in the temporary storage position, the ottoman S4 is rotated by the angle adjusting mechanism 6 as shown in (D2). It is fixed at a desired rotation angle (deployment position) according to the dynamic operation (rotation to the temporary storage position side is prohibited). Further, the occupant may 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. 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 be fixed by the angle adjusting mechanism 6. It can be released. When the fixing by the angle adjusting mechanism 6 is released, the ottoman S4 is rotated downward by its own weight and the urging force of the torsion coil spring 156, and is held in the temporary storage position.

When the seat S is changed from the used state to the dive-down state when the ottoman S4 is in the temporary storage position, the occupant operates the handle 68 (FIG. 1) to operate the stand leg as shown in (E1). The lock of 37 and the lock of the reclining mechanism 3 are released, and the seat back S2 is grasped and rotated forward as shown 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, so that a force diagonally upward from the floor 4 is applied to the ottoman S4. Joining the tip, the ottoman S4 rotates toward the storage position. As shown in (E3), in the dive-down state of the seat S in which the seat back S2 is completely collapsed, the ottoman S4 is positioned in the storage position under the urging force of the torsion coil spring 156 and has a detent mechanism. Retained by 165. Therefore, when the occupant performs the operation of returning the seat S from the dive-down state to the used state, which is shown in FIG. 14 (C), the ottoman S4 is in the storage position even if the seat S returns to the used state. It remains retained.

Returning to FIG. 15, the postures that the seat S can take will be further described. As shown in (F1), when the seat cushion S1 is in the tip-up position, the seat back S2 is rotated forward together with the seat cushion S1 by operating the handle 68 to unlock the reclining mechanism 3. Can be done. The seat back S2 and the seat cushion S1 are fixed at the positions 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 tilted position where the seat back S2 is rotated forward from the upright position. As a matter of course, in any of the states shown in (F1) to (F3), the first gripping member 118 can be operated to unlock the slide mechanism 2 and move the seat back S2 and the seat cushion S1 back and forth. 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 position of use to unlock the tip-up mechanism 5, and as shown in (G2). The seat cushion S1 can be rotated relative to the seat back S2. The occupant can lock the seat cushion S1 to the seat back S2 at an arbitrary position 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, rotates the seat back S2 forward together with the seat cushion S1, and fixes the seat S in the forward leaning posture shown in (G3). It is also possible. When changing the posture of the seat S 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 is a support surface 171 whose upward facing surface supports the occupant's foot in the deployed state. As described above, the support surface 171 is covered with the epidermis SK formed of synthetic leather, cloth, or the like. On the other hand, the front end surface 172 of the ottoman S4 is formed of a material having a hardness higher than that of synthetic leather or cloth, such as resin, unlike the support surface 171. Further, a large number of small protrusions are formed on the surface of the front end surface 172 of the ottoman S4, and the ottoman S4 is 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 to be 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 to the outside in the left-right direction with respect to the front portions 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 bracket welded to the end on the rotation shaft side faces the inner side surface of the front part of the left and right cushion side frames 85. Has been done. That is, the stand legs 37 are formed to be 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 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 with each other.

With the seat S configured in this way, when the seat S is dive-down operated while the ottoman S4 is in the temporary storage position described in (E) of FIG. 15, as shown in (E2). The tip of the ottoman S4 abuts on the lower portion 12 of the floor 4, and the holding by the detent mechanism 165 (FIG. 13) at the temporary storage position is released, and the ottoman S4 rotates backward (on the storage position side) from the temporary storage position. 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 held again 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, a temporary storage position where the seat cushion S1 hangs down from the front portion of the seat cushion S1 when the seat cushion S1 is in the seating position, and a storage position closer to the bottom surface of the seat cushion S1. Is set, and the ottoman S4 is held in both storage positions. As a result, the ottoman S4 can be placed in a storage position that is not exposed when the seat S is in the dive-down posture, and the ottoman S4 can be placed in the temporary storage position during normal use when the dive-down operation is not performed. When the occupant seated in the seat S in the state deploys the ottoman S4, it is below the front part of the seat cushion S1 without reaching to the free end of the ottoman S4 in the storage position along the bottom surface of the seat cushion S1. It can be easily operated by reaching out 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 is in a position that does not prevent the dive-down operation. Since it is rotationally displaced, it is not necessary to displace the Ottoman S4 in 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 front end surface 172 of the ottoman S4 comes into contact with the lower portion 12 of the floor 4, and rotates due to the force received from the floor 4 as the seat cushion S1 is displaced forward and diagonally downward. Therefore, it is not necessary to provide a mechanism for displacing the ottoman S4 regardless of the dive-down operation, the seat S has a simple configuration, and the manufacturing cost of the seat 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 to 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 in 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 vertically or behind the vertical, which is less likely to interfere with the occupants.

In this way, during the dive-down operation, the front end surface 172 of the ottoman S4 comes into contact with the lower portion 12 of the floor 4. In this embodiment, the front end surface 172 of the ottoman S4 has a larger coefficient of friction with respect to the floor 4 than the support surface 171. Therefore, the dynamic friction force when the front end surface 172 of the ottoman S4 and the floor 4 move relative to each other with the displacement of the seat cushion S1 diagonally forward and downward increases, and the force for rotating the ottoman S4 is surely applied to the ottoman S4. In addition, the ottoman S4 reliably rotates to the storage position.

In the present embodiment, the ottoman S4 is held by the detent mechanism 165 (FIG. 13) in the temporary storage position with a larger holding force than the front and rear rotation positions thereof. This makes it possible to prevent the ottoman S4 from swinging in the vicinity of the vertically hanging rotation position when accelerating or decelerating the vehicle or when the ottoman S4 is released from the redeployment position and returned to the temporary storage position side. Further, although the ottoman S4 is urged to the storage position side by the twist coil spring 156 even in the temporary storage position, the ottoman S4 can be kept in the temporary storage position by the holding force of the detent mechanism 165. ..

Further, the detent mechanism 165 holds the ottoman S4 at the storage position with a large holding force so as not to rotate downward due to its own weight, so that the ottoman S4 is moved when the occupant rotates the ottoman S4 to the storage position. It is held in the storage position and makes it possible to form a gap between the ottoman S4 in the storage position and the floor 4 when the seat S is in the dive-down posture. Further, since the ottoman S4 can be held in the storage position even when the occupant returns the seat S from the dive-down state to the used state, it is possible to prevent the occupant from unknowingly catching his / her foot on the ottoman S4. ..

In the present embodiment, as shown in FIG. 12, the ottoman S4 has a torsion coil spring 156 as a urging means for urging the ottoman side frame 131 to the storage position side, and any rotation angle. Even if it is present, it receives an urging force toward the storage position side by the torsion coil spring 156. 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 slides into contact with the floor 4, so that the support surface 171 of the ottoman S4 during the posture change becomes dirty. Can be prevented. Further, since the ottoman S4 can be held in the storage position even when the occupant returns the seat S from the dive-down state to the used state, it is possible to prevent the occupant from unknowingly catching his / her foot on the ottoman S4. ..

In the present embodiment, the ottoman S4 can be held in the storage position by the functions of the detent mechanism 165 and the torsion coil spring 156, and as shown in FIG. 18, the ottoman S4 in the storage position in the dive-down state. A gap having a predetermined dimension C is formed between the floor 4 and the floor 4. As a result, the ottoman S4 does not get 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 at positions where they do not overlap with 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 FIG. 14 (B3) or the like is in the dive-down state or when the seat cushion S1 shown in FIG. 15 (F2) or the like is in the tip-up position. The dimensions can be reduced and the space above the seat S in FIG. 14 (B3) and the space in front of and behind the seat S in FIG. 15 (F2) can be increased.

Next, a modified example of the ottoman S4 will be described. As shown in FIG. 19, protrusions 173 extending from the rotation shaft side toward the free end side are formed at both ends of the support surface 171 of the ottoman S4 in the left-right direction. The central portion 174 of the support surface 171 sandwiched between the two protruding portions 173 is covered with the epidermis SK formed of synthetic leather, cloth, or the like as described above. On the other hand, both protruding portions 173 are formed of a material having a hardness higher than that of synthetic leather or cloth, such as resin, and the surface thereof is formed to be 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 a large number of small protrusions similar to those in the above embodiment, and has a larger friction with respect to the floor 4 than the protruding end surface (a surface substantially parallel to the support surface 171) of the protrusion 173. It is configured to have a coefficient. This protrusion is also formed on the front end faces of both protrusions 173, and the front end faces of both protrusions 173 are also configured to have a larger coefficient of friction 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 comes into contact with the floor 4, the protrusion 173 comes into contact with the floor 4, and the central portion 174 covered with the skin SK comes into contact with the floor 4. Is prevented. For example, while the dive-down operation of FIG. 15 (E) changes from the state (E2) to the state (E3), the front end surface 172 of the ottoman S4 shown in (E2) becomes the lower portion 12 of the floor 4. If the support surface 171 of the ottoman S4 contacts the lower portion 12 of the floor 4 immediately after the contact, the protruding portion 173, not the central portion 174, contacts the floor 4. Further, among the operations of changing the seat S from the dive-down state to the used state in FIG. 14C, the state shown in (C2), that is, the seat back S2 starts to occur, and the rotation of the seat cushion S1 is caused by the seat base 26. When the ottoman S4 is no longer regulated, the support surface 171 of the ottoman S4 may come into contact with the lower portion 12 of the floor 4, but in this case as well, the protruding portion 173, not the central portion 174, comes into contact with the floor 4.

Even when the protrusions 173 come into contact with the floor 4 in this way, the surfaces of both protrusions 173 are formed to be smoother than the central portion 174 of the support surface 171, so that the frictional resistance becomes large and the protrusions 173. Is suppressed from being worn. Further, even when the protruding portion 173 becomes dirty, it is easy to clean it.

Next, a modified example of the sheet S having the ottoman S4 of the embodiment shown in the above embodiment or the modified example will be described. In the seat S of this modification, the angle adjusting mechanism 6 described with reference to FIG. 12 in the above embodiment does not have the torsion coil spring 156 shown by the imaginary line, and the right ottoman side frame 131 is housed. Not urged to the position side. Further, in the sheet S of this modification, as shown in FIG. 20, of 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 figure corresponding to the storage position. The 166 is formed on the lower side in the figure with respect to the position of the recess 166 of the above embodiment shown by the imaginary line. That is, in this modification, the storage position of the ottoman S4 is set to a position (rotation angle) away from the bottom surface of the seat cushion S1 as compared with the storage position of the above embodiment.

Among the operations of the seat S configured in this way, the operation of changing the seat S from the used state to the dive-down state when the ottoman S4 of FIG. 15 (E) is in the temporary storage position, and the operation of FIG. 14 (C). The operation when the seat S in the dive-down posture is returned to the used state will be described with reference to FIG. 21.

When the seat S is changed from the used 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 grasped and rotated forward as shown by an arrow. Then, as shown in (E2), the seat cushion S1 moves diagonally forward and downward, and the tip of the ottoman S4 comes into contact with the lower portion 12 of the floor 4. Subsequently, the seat back S2 rotates forward and the seat cushion S1 moves diagonally forward and downward, so that a force diagonally upward from the floor 4 is applied to the tip of the ottoman S4, and the holding by the detent mechanism 165 is released. Then, the ottoman S4 rotates to the storage position side. At this time, since the ottoman S4 is not subjected to the urging force toward the storage position side by the torsion coil spring 156, the ottoman S4 rotates while sliding the free end to the floor 4. As shown in (E3), even in the dive-down state of the seat S in which the seat back S2 is completely collapsed, as shown in FIG. 22, the ottoman S4 has the free end in contact with the floor 4, and the rotation position is set. It will be the storage position. In this state, the ottoman S4 is held by the detent mechanism 165.

On the other hand, when the ottoman S4 returns the seat S in the dive-down posture in the storage position to the used state, the occupant operates the steering wheel 68 and the seat back S2 is indicated by an arrow as shown in FIG. 21 (C1). Rotate in the direction to raise it. At this time, since the lock by the tip-up mechanism 5 is not applied, the seat cushion S1 does not rise together with the seat back S2 as shown in (C2), but moves backward so as to be dragged by the seat back S2. Further, since the ottoman S4 is held by the detent mechanism 165, the ottoman S4 is in sliding contact with the floor 4 while being positioned at the storage position. After that, the tip of the stand leg 37 engages with the wall portion 13 or the seat base 26 of the floor 4, and as shown in (C3), when the occupant rotates the seat back S2 backward as it is, the stand leg 37 moves to the floor. By being caught by the wall portion 13 or the seat base 26 of 4, the Ottoman S4 is separated from the floor 4, and the stand leg 37 is moved to the used position.

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

As described above, in this modification, when the ottoman S4 described in FIG. 21 (E) is in the temporary storage position and the seat S is dive-down, the ottoman S4 slides into contact with the floor 4. 2 Rotate to the storage position. Therefore, the simple seat S shown in (E2) to (E3) in which the ottoman S4 abuts on 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. It is realized by the configuration. In the sheet S of the present modification, since the support surface 171 of the ottoman S4 is in sliding contact with the floor 4, it is preferable to use the ottoman S4 having the protrusion 173 described in the above modification.

Although the description of the specific embodiment is completed above, the present invention can be widely modified without being limited to the above embodiment. For example, in the above embodiment, the seat S has been described as an example for a vehicle, but the seat S can also be used for an aircraft or a ship.

Further, in the above 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 angle ranges in which the seat back S2 can rotate, as shown in FIG. Although the seat S is provided with 3, the seat back S2 may be held in the used position by a vehicle body or the like, for example, when the seat S is in a used state without the seat S provided with such a reclining mechanism 3.

Further, in the above embodiment, the seat S includes an engaging recess 101 and a lock member 102 as a seat cushion angle adjusting mechanism capable of maintaining an 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 rotatably provided on the seat cushion S1 by a known link mechanism. Further, the ottoman S4 may be displaceable between the temporary storage position hanging from the front portion of the seat cushion S1 and the deployed position, and does not necessarily have to be displaceable behind the temporary storage position.

For example, when there is no interference from the front row seats and the like, when the seat S performs a dive-down operation, the seat S may be displaced upward and diagonally forward in a direction away from the floor 4, that is, on the deployment position side. Such an operation is, for example, an interlocking mechanism that displaces the ottoman S4 to the unfolded position side in conjunction with the rotation of the seat back S2, or an interlocking mechanism that interlocks with the angle change of the seat cushion S1 with respect to the seat back S2 to move the ottoman S4 to the unfolded position side. 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 close to or in contact with the floor 4 is provided, and the ottoman S4 is electrically provided when the closeness or contact is detected by the detection means. The displacement means may be configured to drive the ottoman S4 away from the floor 4.

Alternatively, when the ottoman S4 comes into contact with the floor 4, the ottoman S4 may be rotated forward by the force received from the floor 4. In such a form, 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 at which the lower portion is located forward with respect to the vertical direction, and the ottoman S4 is in this storage position. When the seat S performs a dive-down operation in the position, the portion where the lower end (free end) of the ottoman S4 first abuts on the floor 4 is set as a forward downward slope and a low friction inclined surface, and the lower end of the ottoman S4. Can be implemented by providing the ottoman so as to abut on the floor 4 at a shallow angle.

In the above embodiment, the torsion coil spring 156 is configured to apply an urging force to the storage position side regardless of the rotation angle of the ottoman S4. It may be configured to receive an urging force when it is closer to the storage position 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, but if it is formed at least on the free end side, the free end A form in which a single or a pair of protrusions 173 are formed in the vicinity, a form in which a plurality of protrusions 173 are formed separately from the rotation axis side along the free end side, and a rotation axis side. It may be a form formed on the free end side and 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 protruding portion 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 and portion, quantity, angle, material, etc. can be appropriately changed as long as they do not deviate from the gist of the present invention. Further, not all of the constituent elements of the sheet S shown in the above embodiment are indispensable, 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 Twisting coil spring (urging means)
165 Detent mechanism 171 Support surface (foot support surface)
172 Front end face 173 Protruding part 174 Central part S Seat S1 Seat cushion S2 Seat back S4 Ottoman

Claims (1)

A vehicle seat provided on the floor of a vehicle, comprising a seat back, a seat cushion, and an ottoman rotatably provided with respect to the seat cushion.
The floor is a connection connecting the first floor portion that supports the vehicle seat, the second floor portion that is lower than the first floor portion, and the first floor portion and the second floor portion. Has a wall and
The seat back is rotatably supported around an axis extending laterally by a seat base attached to the first floor portion.
A vehicle seat characterized in that, in a part of the rotatable region of the ottoman, the tip of the ottoman is located at a position lower than the seat base.

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