JP6262526B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat in which an ottoman is provided on a 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 can be pivotably attached to the upper part of the floor, the seat cushion can be flipped up to the seat back side, and the seat cushion can be flipped up to the seat back side. 2. Description of the Related Art A vehicle seat that can change to a dive-down posture in which a seat back is stored in a lower floor portion in front of an upper floor portion by tilting the vehicle forward is known (Patent Document 1).

Japanese Patent No. 4263628

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

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

  In order to solve the above problem, the seat base (26) is provided with a seat back (S2) rotatably attached to the seat base (26), and a seat cushion (S1) rotatably attached to the seat back. A vehicle seat (S) configured to perform a dive-down operation in which the seat cushion is displaced obliquely forward from the seating position toward the floor (4) in accordance with the operation of rotating the seat back forward. When the seat cushion is in the seating position, the seat cushion is displaceable between a first storage position depending from the front portion of the seat cushion and a deployed position extending forward from the front portion of the seat cushion. The ottoman (S4) provided on the seat cushion is further provided, and the dive down operation is performed in a state where the ottoman is in the first storage position. When it was to provide a vehicle seat, characterized in that it may take a second storage position that does not interfere with the floor. Here, “do not interfere” is intended to prevent the dive down operation from being prevented, although it may contact 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 previously displaced to the second storage position. Thus, the dive down operation can be performed, and the operation of changing the seat to the dive down posture is facilitated.

  Further, in the above invention, the ottoman is provided in the seat cushion so as to be rotatable around a shaft extending in a lateral direction, and the dive down operation is performed in the state in the first storage position. In this case, it may be configured to contact the floor and rotate toward the second storage position by a 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 sheet can be formed with a simpler configuration and at a lower cost.

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

  According to this configuration, the ottoman at 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 the rear of the vertical or vertical that does not disturb the occupant.

  In the above invention, the ottoman is biased by the biasing means (156) toward the second storage position when at least the predetermined rotation angle is closer to the second storage position. It can be set as the structure to do.

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

  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, since the ottoman's foot support surface does not contact the floor when the seat performs a dive down operation or is in a dive down posture, the ottoman's foot support surface can be prevented from being soiled by contact with the floor. .

  In the above invention, the ottoman is configured to rotate to the second storage position while being in sliding contact with the floor when the dive down operation is performed in the state of being in the first storage position. Can do.

  According to this configuration, when the dive down operation is performed, the seat in which the ottoman contacts the floor and rotates to the second storage position on the bottom surface side of the seat cushion can be realized with a simple configuration.

  In the above invention, a detent mechanism (165) that holds the ottoman in the first storage position with a sense of moderation can be further provided.

  According to this configuration, since the ottoman is held by the detent mechanism at the first storage position, it is possible to prevent the ottoman from shaking during acceleration and deceleration. Further, when the ottoman receives a biasing force toward the second storage position by the biasing means, the ottoman can be held at the first storage position by the detent mechanism.

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

  According to this configuration, it is possible to hold the ottoman in the second storage position other than when the seat is in the dive down posture. Further, when the seat is returned from the dive down state to the use state, the ottoman can be held in the second storage position.

  Moreover, in said invention, it can be set as the structure by which the protrusion part (173) is formed in the free end side of the said ottoman's leg | foot support surface (171).

  According to this configuration, since the ottoman's foot support surface other than the protrusion does not contact the floor when the seat is in the dive down position, dirt on the floor is prevented and the foot support surface other than the protrusion is prevented from becoming dirty. it can.

  In the above invention, the protrusion (173) may be formed on the left and right ends of the foot support surface of the ottoman from the free end side along the rotation shaft side.

  According to this configuration, when the seat is in the dive down position, the center portion of the ottoman's foot support surface does not contact the floor. Can be prevented.

  In the above invention, the left and right protrusions of the ottoman are made of a material having a hardness higher than that of the center portion (174) of the foot support surface, and are smoother than the center portion of the foot support surface. It can be set as the structure currently formed.

  According to this structure, since the protrusion part of an ottoman is formed more smoothly than the center part of a foot | leg support surface, when a protrusion part becomes dirty, it is easy to clean. In addition, the ottoman's protruding part is easier to contact the floor than the center part of the foot support surface, but because it is formed smoothly with a material having a higher hardness than the center part, frictional resistance is caused by contact with the floor. It is possible to prevent the enlargement and the protrusion from being worn.

  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 in the foot support surface. It can be.

  The ottoman in the first storage position that hangs down from the front portion of the seat cushion comes into contact with the floor in the dive down operation. Therefore, by adopting such a configuration, the front end face can reliably receive the force toward the second storage position when contacting the floor, and the ottoman can be reliably rotated toward the second storage position.

  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 disposed on the outer side in the left and right direction with respect to a front portion of the cushion side frame. A configuration having a frame (131) may be employed.

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

14
Further, in the above invention, a stand leg (37) is rotatably provided on the inner side of the cushion side frame in the left-right direction, the stand leg is in a storage position along the bottom surface of the seat cushion, and When the ottoman is in the second storage position, the cushion side frame, the ottoman side frame, and the stand leg may be provided at positions that do not overlap each other in plan view.

  According to this configuration, the combined thickness of the seat cushion, the ottoman, and the stand leg when the stand leg is in the storage position and the ottoman is in the second storage position can be reduced.

  According to the above configuration, in the vehicle seat in which the dive down operation is possible and the ottoman is provided on the seat cushion, it is possible to facilitate the operation of changing to the dive down posture in a state where the ottoman is in the deployed position. .

The perspective view of the vehicle seat which concerns on embodiment A perspective view of a seat frame of a vehicle seat Right side view of the seat frame of the vehicle seat Plan view of the seat base of a vehicle seat Plan view of a seat frame of a vehicle seat Rear view of vehicle seat frame The perspective view which looked at the vehicle seat from the front lower side Schematic cross section of stand base Schematic of reclining mechanism Schematic diagram of tip-up mechanism Exploded perspective view of ottoman Schematic of the ottoman angle adjustment mechanism Schematic of the ottoman detent mechanism Operation explanatory diagram of vehicle seat Operation explanatory diagram of vehicle seat Ottoman perspective view Plan view of the main part of the seat frame when the stand leg and ottoman are in the stowed position Side view of vehicle seat in dive down state Perspective view of ottoman according to modification Schematic of the detent mechanism of an ottoman for a vehicle seat according to a modified example Operation explanatory diagram of the vehicle seat according to the modified example Side view showing a dive down state of a vehicle seat according to a modified example

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, the left and right are determined based on the person sitting on the seat S. Further, when the direction of each part or the like is described, it is based on the time when the seat S is in the seated state. About the structure provided in right and left, a common number is attached | subjected, and when specifying left and right, the left or right character is attached | subjected to the name of a structure.

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

  As shown in FIG. 2, a seat frame F is built in the seat cushion S1, the seat back S2, the headrest S3, and the ottoman S4. The seat frame F 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. And an ottoman frame F4.

  The seat cushion pad P1, the seat back pad P2, the headrest pad P3, and the ottoman pad P4 are respectively disposed on the seating surface side of the cushion frame F1, the backrest surface side of the back frame F2, the support surface side of the headrest frame F3, and the ottoman frame F4. Is attached and covered by the epidermis SK. Each pad P is formed of a cushioning material having elasticity such as polyurethane foam. Each skin SK is formed from synthetic leather, fabric, or the like. Covers made of a resin material are attached to the bottom surface side of the cushion frame F1, the back surface side of the back frame F2, and the back surface side of the ottoman frame F4, and the bottom surface, the back surface, and the back surface are defined by these cover members. It 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 F <b> 2 is slidable with respect to the floor 4 and can be rotated (tilted) with respect to the slide mechanism 2. The cushion frame F1 is rotatably attached to the back frame F2 via the tip-up mechanism 5. The headrest frame F3 is slidably attached to the back frame F2. The ottoman frame F4 is slidably attached to the cushion frame F1. The ottoman frame F4 has an angle adjusting mechanism 6 so that the angle can be adjusted.

  As shown in FIG. 3, the floor 4 includes a high-order part 11 on which the slide mechanism 2 is installed, and a low-order part 12 formed on the front side and below the high-order part 11. A wall portion 13 that rises 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 respect to the high level portion 11. The floor 4 is covered with an interior material made of a nonwoven fabric or the like manufactured by a needle punch manufacturing method. The lower part 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 mechanism 2 is provided in a pair of left and right with respect to one sheet S. Each slide mechanism 2 includes a lower rail 15, an upper rail 16 attached to the lower rail 15 so as to be displaceable, and a rail lock member 17 that fixes the upper rail 16 to the lower rail 15. Various known mechanisms can be applied to the slide mechanism 2. Each of the lower rails 15 is disposed on the high level portion 11 (FIG. 3) of the floor 4 so as to extend in the front-rear direction with a distance from each other in the left-right direction. Each lower rail 15 is joined to the floor 4 by bolt fastening or the like. The upper rail 16 is engaged so as to be slidable in the longitudinal direction of the lower rail 15.

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

  Slide members 21 are joined to the left and right upper rails 16, respectively. The left and right slide members 21 are obtained 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 left and right slide members 21 are joined at their front ends by a slider front member 23, their rear ends are joined by a slider rear member 24, and intermediate portions in the front-rear direction are joined by a slider intermediate member 25. Each member 23, 24, 25 is formed of a metal pipe, joined to each slide member 21 by welding, bolt fastening, or the like, and extends parallel to each other to the left and right. As a result, the left and right slide members 21 and the respective members constitute 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 together.

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

  As shown in FIGS. 4, 6, and 8, a stand base 34 is stretched over 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, welded to the center portion in the left-right direction of the slider front member 23 at the front end portion, and welded to the center portion in the left-right direction of the slider intermediate member 25 at the rear end portion. Has been. Support grooves 35 that extend in the left-right direction and reach the left and right ends of the stand base 34 are formed on the top of the stand base 34. The support groove 35 opens upward and toward the front side. The support groove 35 supports a stand leg 37 described later.

  A locking claw 41 is rotatably attached to the stand base 34. The locking claw 41 has a rush position into the support groove 35 from the side of the support groove 35, which is indicated by a solid line in FIG. And the retracted position retracted to the outside of the support groove 35 as indicated by an imaginary line in FIG. A torsion spring 42 as an urging means is interposed between the stand base 34 and the locking claw 41, and the locking claw 41 is urged to the entry position. The locking claw 41 locks a lateral member 94 of a stand leg 37 to be described later at the entry position, and prevents the lateral member 94 from being detached from the support groove 35. Note that an outer portion of the locking claw 41, that is, a portion facing the opening end side of the support groove 35 when the locking claw 41 is in the protruding position is formed on an inclined surface.

  As will be described in detail later, one end of a 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 when the locking claw cable 43 is pulled.

  As shown in FIGS. 2, 5, and 6, the back frame F <b> 2 is welded to the pipe frame 45 formed in a vertically long rectangular frame shape and the lower portions of the left and right side portions that extend above and below the pipe frame 45. And left and right backside frames 46 joined together. The left and right backside frames 46 are formed by pressing a metal plate. The left and right back side frames 46 have concave surfaces curved so as to hold the outer surfaces of the lower portions of the left and right side portions of the pipe frame 45, and are joined to the left and right side portions of the pipe frame 45 by welding or the like. Yes. The lower portions of the left and right back side frames 46 extend below the lower ends of the left and right side portions. The left and right back side frames 46 partially extend to the lower side of the pipe frame 45 and are joined by welding or the like. Further, a reinforcing plate 47 joined by welding or the like is spanned between the left and right back side frames 46 and the lower side of the pipe frame 45 to reinforce the back frame F2. The reinforcing plate 47 cooperates with the back side frame 46 and the pipe frame 45 to form a hollow three-dimensional structure, and the lower portion extends downward along the back side frame 46.

  The lower portions of the left and right back side frames 46 have side surfaces that face in the left-right direction. The left side surface of the lower part of the left back side frame 46 is opposed to the right side surface of the left slide member 21 and is rotatably connected. As shown in FIGS. 5 and 7, the lower left side surface of the right back side frame 46 faces the right side surface of the reclining mechanism 3 attached to the right slide member 21, and the right slide member 21 is interposed via the reclining mechanism 3. It is connected to the pivotable. The rotation axes of the left and right back side frames 46 are arranged coaxially with each other.

  The reclining mechanism 3 can maintain the rotation (tilt) angle of the right back side 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 back side frame 46 relative to the right slide member 21 when the release lever 51 is operated. Various known mechanisms can be applied to the reclining mechanism 3.

  As shown in FIG. 9, the reclining mechanism 3 as an example according to the present embodiment is joined to the lower plate 52 joined to the right slide member 21 and the lower part of the right side frame, and is arranged to face the lower plate 52. An upper plate 53 that is rotatable with respect to the lower plate 52, a connecting shaft 54 that passes through the rotation center of the lower plate 52 and the upper plate 53, and an internal space formed between the upper plate 53 and the lower plate 52. The cam plate 55 that rotates integrally with the connecting shaft 54, a plurality of lock members 56 disposed in the internal space, and a torsion spring 57 as biasing means that biases the cam plate 55 in one rotational direction. And have. The locking member 56 engages with a guide groove 58 formed in the lower plate 52 and is disposed so as to be movable in the radial direction of the lower plate 52. The lock member 56 has a cam portion in the radially inner portion and outer teeth 59 in the radially outer portion, and forms an inner space of the upper plate 53 when moved radially outward. It engages with 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 rotation direction, and moves the lock member 56 radially inward when rotating in the other rotation direction. Move towards. One end of the connecting shaft 54 passes through 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.

  In the reclining mechanism 3, the cam plate 55 is normally biased in one rotational direction by the torsion spring 57, the lock member 56 moves radially outward, and the external teeth 59 of the lock member 56 are moved to the upper plate 53. Engage with the internal teeth 61. As a result, the relative rotation of the lower plate 52 and the upper plate 53 via the lock member 56 is prohibited. That is, the reclining mechanism 3 is in a locked state in which the rotation of the upper plate 53 relative 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 biasing force of the torsion spring 57, the lock member 56 is moved. It moves radially inward, and the engagement between the external teeth 59 of the lock member 56 and the internal teeth 61 of the upper plate 53 is released. Thereby, relative rotation of the lower plate 52 and the upper plate 53 becomes possible. One end of a reclining cable 63 (FIGS. 3 and 7) as a force transmission means is locked to the release lever 51. The release lever 51 rotates in the release direction when the reclining cable 63 is pulled.

  As shown in FIGS. 2, 3, and 5, a bracket 66 that supports the handle unit 65 is joined to the upper end portion of the right side portion of the pipe frame 45 by welding or the like. The handle unit 65 includes 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 P <b> 2 and the outer skin SK thereof are notched at portions corresponding to the handle unit 65. As a result, the handle 68 is exposed at the upper right portion of the seat back S2 and can be operated by the passenger.

  The handle 68 has one end of a locking claw cable 43 with one end locked to the locking claw 41 (FIG. 8) and one end of a reclining cable 63 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 cylindrical outer tube. The locking claw outer tube 71 that holds the locking claw cable 43 will be described with reference mainly to FIG. 5 although a detailed layout drawing is omitted. One end is fixed to the stand base 34, and the right slide member 21, extends upward along the right side of the right back side frame 46 and the pipe frame 45, and the other end is fixed to the bracket 66. As shown in FIG. 3, the reclining outer tube 72 that holds the reclining cable 63 is fixed to the right side surface of the right back side frame 46, and is attached to the right side portions of the right back side frame 46 and the pipe frame 45. The other end is fixed to the bracket 66. The locking claw outer tube 71 and the reclining outer tube 72 are bound to the right side of the pipe frame 45 by a band or the like.

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

  As shown in FIGS. 2 and 3, an armrest bracket 76 that supports the armrest 75 is joined to the left side portion of the pipe frame 45 by welding or the like. The armrest bracket 76 protrudes forward from the left side portion of the pipe frame 45. An armrest 75 is attached to the armrest bracket 76 so as to be rotatable within a predetermined range.

  As shown in FIGS. 2 and 5, a pair of headrest holding portions 78 for supporting the headrest S <b> 3 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 that is a resin cylindrical 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 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 bars are welded at appropriate positions of the pipe frame 45. The auxiliary frame 82 is hung between the left and right side parts, is arranged so as to project leftward from the left side part, and is arranged so as to project rightward from the right side part. Including things. The auxiliary frame 82 compensates for the gap in the pipe frame 45 and supports the seat back pad P2.

  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 that connects the front ends of the left and right cushion side frames 85, and the left and right cushion side frames. 85, and a rear cushion member 87 for connecting the rear portions of the two. The left and right cushion side frames 85 are formed by pressing a metal plate or the like, and are bent and raised so that the main surface faces left and right and the edge protrudes outward in the left and right directions. The rear end portions of the left and right cushion side frames 85 are bent with respect to the front portion extending in the front-rear direction and extend obliquely rearward and upward. The rear cushion 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 disposed so that the right side surface thereof is opposed to the upper portion of the left side surface of the left back side frame 46 and is rotatably attached to the left back side frame 46.

  As shown in FIG. 6, a fastening seat 88 is formed on the upper portion of the right back side frame 46 so as to protrude rightward and whose protruding end has a planar shape. A support plate 89 is joined to the fastening seat 88 by bolt fastening or the like. A recess 90 that forms a gap with the support plate 89 is formed below the fastening seat 88 in the right backside frame 46. The support plate 89 is a metal plate with the main surface facing left and right and extending vertically, and the upper end portion is joined to the fastening seat 88. A lower portion of the support plate 89 is disposed at a distance from the right side surface of the right back side frame 46. The rear end portion of the right cushion side frame 85 is disposed between the right back side frame 46 and the support plate 89 and is rotatably attached to the support plate 89. The pivot shafts of the left and right cushion frames extend to the left and right, and are arranged coaxially with each other.

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

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

  When the stand leg 37 is in the use position, the stand leg 37 can enter the support groove 35 of the stand base 34 as shown in FIG. When the stand leg 37 is locked to the support groove 35, the seat cushion S1 is supported by the stand leg 37 from below, and is disposed 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, thereby restricting the rotation from the use position to the storage position. That is, when the stand leg 37 is locked to the support groove 35, the rotational position of the seat cushion S1 relative to the seat back S2 is determined.

  When the transverse member 94 of the stand leg 37 is inserted into the support groove 35, the transverse member 94 pushes the inclined surface of the latching claw 41, and the latching claw 41 is moved from the entry position against the biasing force of the torsion spring 42. Rotate to the retracted position. When the transverse 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 being detached from the support groove 35. When it is desired to detach the pipe portion from the support groove 35, the occupant operates the handle 68 (FIG. 1) and positions the locking claw 41 in the retracted position via the locking claw cable 43.

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

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

  At least one engaging recess 101 is provided. One of the engagement recesses 101 is located at a 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 seating 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). 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 a position where the lock member 102 can be engaged at an arbitrary angle between the seating position of the seat cushion S1 and the tip-up position. As a result, when the tip-up mechanism 5 rotates the right cushion side frame 85 upward with respect to the support plate 89, the lock member 102 biased by the tension coil spring 104 at the predetermined rotation position is engaged with the engagement recess 101. The right cushion side frame 85 is maintained at a predetermined angle.

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

  When the cam member 103 rotates to the first position shown by the solid line against the urging force of the tension coil spring 104 due to the operation of the occupant, the lock member 102 moves to the release position and engages with the engagement recess 101. become unable. One end of a first tip-up cable 106 and a second tip-up cable 107 as force transmission means is connected to the cam member 103. The first tip-up cable 106 is slidably held by a cylindrical first tip-up outer tube 108, and the second tip-up cable 107 is slid by a cylindrical second tip-up outer tube 109. It is held as possible.

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

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

  The positions of the other end of the second tip-up cable 107 and the other end of the second tip-up outer tube 109 are the second tip-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 tip-up outer tube 109. As a result, the second tip-up cable 107 is pulled toward the other end as the seat back S2 tilts forward. When the seat back S2 tilts more than a predetermined angle, the cam member 103 (FIG. 10) Pulled by the tip-up cable 107 and positioned at the first position indicated by the solid line in FIG. 10, the lock member 102 is also positioned at the release position indicated by the solid line. That is, the first tip-up cable 106 and the first tip-up outer tube 108, and the second tip-up cable 107 and the second tip-up outer tube 109 are the tips for unlocking the tip-up mechanism 5, respectively. An uplock cancel mechanism 113 is configured.

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

  Next, the arrangement of the first rail cable 31 and the second rail cable 32 will be described. As shown in FIG. 5, the first rail cable 31 is slidably held by a cylindrical first rail outer tube 114, and the second rail cable 32 is a cylindrical second rail outer tube 115. Is slidably held. One end of the outer rail 114 for the first rail and the outer tube 115 for the second rail is locked to the stationary portion of the link mechanism 28, and one end of the first rail cable 31 and the second rail cable 32 is the end of the link mechanism 28. It is locked to the movable part. In another example, one end of the first rail outer tube 114 and the second rail outer tube 115 may be engaged with the slider intermediate member 25 or the slider rear member 24.

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

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

  The 1st holding member 118 and the 2nd holding member 122 are straps containing a woven fabric, a string, a rope, etc., 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 a band-shaped band. As shown in FIGS. 1 and 7, a passage (not shown) through which the first gripping member 118 penetrates forward and backward 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 A grommet 127 that defines a hole through which the first gripping member 118 passes is attached to the 125 skins SK. Thereby, the front-end | tip part of the 1st holding member 118 passes the grommet 127, and protrudes from the front-end surface of seat cushion S1.

  The occupant can pull the first rail cable 31 by gripping the first gripping member 118 and pulling it out from the seat cushion S1. In addition, the occupant can pull the second rail cable 32 by holding the second holding 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, and the left and right rail lock members 17 are detached from the respective lock holes, and are moved to the lower rail 15. 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 F <b> 4 has a base member 130 that extends in the left and right directions, and a base end portion that is rotatably attached to the left end and the right end of the base member 130. It has a pair of left and right ottoman side frames 131 extending to the front ends, and a ottoman front member 132 extending left and right and connecting the front ends of the left and right ottoman side frames 131, and is formed in a rectangular frame shape. Between the base member 130 and the ottoman front member 132, a plurality of ottoman auxiliary members 134 for connecting the left and right ottoman side frames 131 are spanned. The base member 130 and the ottoman front member 132 are formed from metal pipes. The left and right ottoman side frames 131 are formed by press-molding a metal plate or the like, the main surfaces thereof face left and right, and the edges thereof are bent inward in the left and right direction. The base member 130 is provided with a pair of left and right ottoman pillars 135 spaced from each other on the left and right. The left and right ottoman pillars 135 are formed of solid metal rods, are spaced 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 front end side excluding the base end portions of the left and right ottoman side frames 131, the ottoman front member 132, and the ottoman auxiliary member 134. Is formed. The skin SK of the ottoman S4 is provided so as to cover the ottoman pad P4, the distal end side excluding the base ends of the left and right ottoman side frames 131, 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 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 cylindrical shape having both ends of a square cross section open. The pillar support portion 141 includes a portion corresponding to a portion between the left cushion side frame 85 and the left edge of the center support member 91 in the cushion front member 86, and a portion between the right cushion side frame 85 and the right edge of the center support member 91. And a portion corresponding to. The pillar support portion 141 is disposed below the front cushion member 86 so that the axis extends in the front-rear direction. The upper portion of the pillar support portion 141 extends into the front-rear concave portion 143 formed in the lower portion of the front cushion member 86, and welding or the like is performed in the concave portion 143. Are joined by. A support 142 that is a resin-made cylindrical member 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. Thereby, 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, a 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 disposed on the outer surface of the skin SK of the seat cushion S1. Returning to FIG. 11, a locking member 147 is received at the front end of the support 142 so as to be displaceable. The locking member 147 is displaceable between a projecting position that enters the inner hole of the support 142 and a retracted position that is separated from the inner hole, and is biased to the projecting position by a biasing member (not shown). One end portion of the locking member 147 protrudes outward from the side portion of the front end portion of the support 142 to constitute an operation portion 148 that can be operated by the occupant. The occupant can displace the locking member 147 from the entry position to the retracted position by pushing the operation portion 148 into the support 142. The locking member 147 maintains the position of the ottoman pillar 135 relative to the support 142 by locking the locking groove 146 of the ottoman pillar 135.

  The left and right ottoman side frames 131 with respect to the base member 130 are rotatable between a storage position (see FIG. 14A1) and a most developed position (see an imaginary line in FIG. 15D3). . A temporary storage position (see FIG. 15 (D1)) is set between the storage position and the most developed position. In the storage position, most of the ottoman S4 is disposed below the seat cushion S1, and the back surface of the ottoman S4 faces the lower surface of the seat cushion S1. In the temporary storage position, the ottoman S4 is held in a state of hanging substantially vertically from the base member 130. In the most deployed position, the ottoman S4 protrudes 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.

  Between the right end portion of the base member 130 and the right ottoman side frame 131, an angle adjusting mechanism 6 (FIG. 5) and a detent mechanism 165 (FIG. 5) are interposed. The angle adjusting mechanism 6 allows the right ottoman side frame 131 to rotate clockwise (rotation toward the most developed position) with respect to the base member 130 when viewing the ottoman S4 from the left side, as well as the temporary storage position and the most deployed position. Counterclockwise rotation of the right Ottoman side frame 131 with respect to the base member 130 (rotation toward the storage position) is prohibited. Further, after the rotation of the ottoman side frame 131 with respect to the base member 130 reaches the fully deployed position, the angle adjusting mechanism 6 rotates the right ottoman side frame 131 with respect to the base member 130 in a clockwise direction until reaching the retracted position. Allow. Various known mechanisms can be applied to the angle adjusting mechanism 6.

  As shown in FIG. 12, the angle adjusting mechanism 6 as an example according to the present embodiment is rotatable on the left side surface of the right ottoman side frame 131 and the ratchet teeth 151 integrally fixed to the outer peripheral portion of the base member 130. And a claw body 152 that can be engaged with the ratchet teeth 151, and a screw that is provided between the claw body 152 and the left side surface of the right ottoman side frame 131 and biases the claw body 152 toward the ratchet teeth 151. A torsion spring 153, a cam body 154 that is coaxially and rotatably attached to the base member 130, and a protrusion 155 provided on the base member 130. A torsion coil spring 156 is provided between the base member 130 and the right ottoman side frame 131 to urge the right ottoman side frame 131 toward the storage position at all times. When the claw body 152 engages with the ratchet teeth 151, the right ottoman side frame 131 is prevented from rotating toward the storage position with respect to the base member 130. When the right ottoman side frame 131 rotates to the most developed position side with respect to the base member 130, the claw body 152 can be detached from the engaged ratchet teeth 151 and can be engaged with the adjacent ratchet teeth 151. Can do.

  The cam body 154 has a large-diameter portion 157 that protrudes outward in the radial direction of the base member 130 from the protruding end of the ratchet tooth 151, and is recessed inward in the radial direction of the base member 130 from the root circle of the ratchet tooth 151. A small diameter portion 158. The claw body 152 can be engaged with the ratchet teeth 151 when the small-diameter portion 158 of the cam body 154 faces, and abuts against the large-diameter portion 157 when the large-diameter portion 157 of the cam body 154 faces. The ratchet teeth 151 cannot be engaged. When the claw body 152 is opposed to the small diameter part 158 of the cam body 154, the claw body 152 abuts on the boundary between the small diameter part 158 and the large diameter part 157, and the right ottoman side frame 131 rotates relative to the base member 130 toward the most deployed position. Accordingly, the cam body 154 is rotated. When the rotation of the right ottoman side frame 131 with respect to the base member 130 toward the most developed position proceeds and reaches a predetermined angle in the vicinity of the most developed position, the protrusion 155 engages with the first stopper surface 161 of the cam body 154 so that the cam body The rotation of 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 can no longer be engaged with the ratchet teeth 151, and the right ottoman side frame 131 can be rotated 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 to the storage position side with respect to the base member 130, the cam body 154 receives frictional force from the claw body 152, and 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 relative to the base member 130 toward the storage position proceeds and the claw body 152 exceeds the range facing the ratchet teeth 151, the protrusion 155 engages with the second stopper surface 162 of the cam body 154. As a result, the rotation of the cam body 154 relative to the base member 130 is restricted. 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 teeth 151 again, and when the right Ottoman side frame 131 rotates with respect to the base member 130, the claw body 152 is engaged with the ratchet teeth 151. Match.

  The detent mechanism 165 holds the ottoman S4 at a predetermined rotational position with a sense of moderation, that is, half-locks the ottoman S4 with a larger holding force than the front and rear rotational positions. The detent mechanism 165 is configured to hold the ottoman S4 at two locations, a temporary storage position and a storage position. Various known mechanisms can be applied to the detent mechanism 165. In this 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. The half lock member 167 is biased toward the base member 130 by the means 168. The engaging surfaces of the recess 166 and the half lock member 167 are formed in a curved surface or an inclined surface. In the detent mechanism 165, when the ottoman S4 is in the temporary storage position and the storage position, the half lock member 167 and the recess 166 are engaged with each other, and a predetermined rotational load is applied to the base member 130 and the ottoman side frame 131. 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 weight of the ottoman S4 and the rotational load due to the biasing force of the torsion coil spring 156.

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

  FIG. 14 (A1) shows a use state of the seat S in which the seat back S2 is in the use position, the seat cushion S1 is in the seating position, and the ottoman S4 is in the storage position. In this state, when the occupant operates the handle 68 (FIG. 1) to release the lock of the stand leg 37, and grips the seat cushion S1 and jumps up to the seat back S2 side as indicated by the arrow, the state changes to (A2). As shown, the seat surface of the seat cushion S1 can be rotated to the upper limit position (chip up position) along the front surface of the seat back S2. In this state, the stand leg 37 is in the use 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 tip-up cable 106. 102 is located at the release position, and the rotational position of the seat cushion S1 relative to the seat back S2 is not fixed. When the stand leg 37 is tilted in the direction of the arrow and moved to the storage position, the tip-up mechanism 5 can be locked as shown in (A3), the rotational position of the seat cushion S1 is fixed, and the seat cushion S1 is inserted into the tip. The sheet S is held in the tip-up posture at 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 may be tilted forward. It becomes 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 is rotated forward, as shown in (B2), the stand leg 37 is detached from the support groove 35 (FIG. 8) of the stand base and moved forward. Further, by rotating the seat back S2 so as to fall forward, the stand leg 37 falls, and the seat S has the seat cushion S1, the seat back S2, and the ottoman S4 at the lower part of the floor 4 as shown in (B3). 12 is a dive down posture stored in 12. In this state, since the stand leg 37 is disposed at the storage position, the first tip-up cable 106 (FIG. 10) is loosened, but the seat back S2 is tilted forward by a predetermined angle or more. The fifth cam member 103 is pulled by the second tip-up cable 107, the lock member 102 is positioned at the release position, and the rotational position of the seat cushion S1 relative to the seat back S2 is not fixed.

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

  When returning the seat S in the dive down position to the use state, as shown in (C1), the occupant operates the handle 68 to unlock the reclining mechanism 3, and raises the seat back S2 as shown by an arrow. Turn to. At this time, since the tip-up mechanism 5 is not locked, as shown in (C2), the seat cushion S1 does not rise together with the seat back S2, moves rearward so as to be dragged by the seat back S2, and the stand leg 37 Is engaged with the wall 13 of the floor 4 or the seat base 26. As shown in (C3), when the occupant rotates the seat back S2 rearward as it is, the stand leg 37 is caught by the wall portion 13 or the seat base 26 of the floor 4 and moved to the use position. When the occupant further rotates the seat back S2 rearward, the lateral member 94 (FIG. 8) of the stand leg 37 enters the support groove 35 of the stand base 34 while pushing away the locking claw 41, and is shown in (C4). As described above, the seat back S2 is fixed to the use position and the seat cushion S1 is fixed to 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 sitting state shown in (C4), The coil spring 156 is held in the storage position by the biasing force of the torsion coil spring 156 and the holding force of the detent mechanism 165.

  The occupant can turn the ottoman S4 from the state shown in (C4) in the direction of the arrow 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 adjustment mechanism 6 of the ottoman S4 does not maintain the angle of the ottoman S4 between the storage position and the temporary storage position, the ottoman S4 can be freely rotated in any direction. Therefore, by rotating the ottoman S4 again in the direction of the arrow from the state (C5), the ottoman S4 is stored opposite to 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 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 moving operation (rotation to the temporary storage position side is prohibited). Further, the occupant can operate the locking member 147 (FIG. 11) to release the lock of the ottoman pillar 135 with respect to the seat cushion S1, move the ottoman S4 to a desired position in the front-rear direction, and fix the ottoman S4 to that position. it can. When the use of the ottoman S4 is finished, the ottoman S4 is rotated in the direction indicated by the arrow in (D2) and moved to the most developed position shown by the broken line in (D3), whereby the angle adjustment mechanism 6 is fixed. It can be canceled. When the fixing by the angle adjusting mechanism 6 is released, the ottoman S4 is rotated downward by its own weight and the urging force of the torsion coil spring 156, and is held in the temporary storage position.

  When the seat S is changed from the use state to the dive down state when the ottoman S4 is in the temporary storage position, as shown in (E1), the occupant operates the handle 68 (FIG. 1) to operate the stand leg. The lock 37 and the reclining mechanism 3 are unlocked, and the seat back S2 is gripped and rotated forward as indicated by an arrow. At this time, as shown in (E2), the front end of the ottoman S4 comes into contact with the lower portion 12 of the floor 4, and the seat cushion S1 moves obliquely forward and downward, so that a force obliquely upward and backward from the floor 4 is applied to the ottoman S4. In addition to the tip, the ottoman S4 rotates to the storage position side. As shown in (E3), in the dive down state of the seat S in which the seat back S2 is completely collapsed, the ottoman S4 is positioned at the storage position by receiving the urging force of the torsion coil spring 156, and the detent mechanism. 165 hold. Therefore, when the occupant performs an operation to return the seat S from the dive down state to the use state, which shows a series of operations shown in FIG. 14C, the ottoman S4 remains in the retracted position even if the seat S returns to the use state. Retained.

  Returning to FIG. 15, the postures that the sheet S can take are 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 do. The seat back S2 and the seat cushion S1 are fixed at a position where the handle 68 is returned. For example, as shown in (F2), the reclining mechanism 3 can be locked at a position where the seat back S2 and the seat cushion S1 stand upright. Moreover, as shown to (F3), the reclining mechanism 3 can also be locked in the forward tilt position which the seat back S2 rotated ahead rather than the upright position. Of course, in any of the states shown in (F1) to (F3), the first gripping member 118 is operated to unlock the slide mechanism 2, and the seat back S2 and the seat cushion S1 can be moved back and forth. it can.

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

  Next, the ottoman S4 will be described in more detail. As shown in FIG. 16, the ottoman S <b> 4 is a support surface 171 that supports an occupant's foot with a surface facing upward in a deployed state. As described above, the support surface 171 is covered with the skin SK formed of synthetic leather or cloth. On the other hand, unlike the support surface 171, the front end surface 172 of the ottoman S4 is formed of a material having higher hardness than synthetic leather or fabric, such as resin. Further, a large number of small protrusions are formed on the surface of the front end surface 172 of the ottoman S4 and are configured to have a larger coefficient of friction 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 be described in more detail with reference to FIG. As described above, the ottoman frame F4 is formed in a rectangular frame shape and includes a pair of left and right ottoman side frames 131 and the like. The ottoman frame F4 is formed wider than the width of the front portion of the cushion frame F1. The left and right ottoman side frames 131 are arranged at positions offset outward in the left-right direction from 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 portion 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. That is, the stand leg 37 is formed narrower than the width dimension of the front portion of the cushion side frame 85. Therefore, as shown in FIG. 17, even when the stand leg 37 is in the storage position along the bottom surface of the seat cushion S1 and the ottoman S4 is in the storage position, the stand leg 37, the cushion side frame 85, and the ottoman side frame 131 are also located. Are arranged so as not to overlap each other.

  When the sheet S is configured in this way, when the sheet S is dive-down operated with the ottoman S4 in the temporary storage position described in FIG. 15E, as shown in FIG. The tip of the ottoman S4 comes into contact with the lower portion 12 of the floor 4 and the holding by the detent mechanism 165 (FIG. 13) in the temporary storage position is released, and the ottoman S4 rotates rearward (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 by the detent mechanism 165 again.

  As shown in FIG. 18, when the seat S is in the dive down posture, the seat cushion S <b> 1 comes into contact with the seat base 26, so that the seat cushion S <b> 1 and the ottoman S <b> 4 are moved 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 that 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 that is closer to the bottom surface of the seat cushion S1. Is set, and the ottoman S4 is held in both storage positions. Thereby, when the sheet S is in the dive down posture, the ottoman S4 can be disposed in the storage position where the ottoman S4 is not exposed, and the ottoman S4 is disposed in the temporary storage position during normal use without performing the dive down operation. When the occupant seated in the seat S in the state deploys the ottoman S4, the occupant does not reach to the free end of the ottoman S4 in the storage position along the bottom surface of the seat cushion S1, but below the front portion 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 sheet S, the ottoman S4 is displaced toward the storage position where it does not interfere with the floor 4, and the ottoman S4 in the temporary storage position is in a position where the dive down operation is not prevented. Because of the rotational displacement, there is no need to displace the ottoman S4 in the temporary storage position by another operation before performing the dive down operation, and the operation for changing the sheet S to the dive down posture is easy.

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

  The ottoman S4 is provided so as to be rotatable to a storage position closer to the bottom surface of the seat cushion S1 than the temporary storage position, and the storage position of the ottoman S4 is set on the bottom surface side of the seat cushion S1 with respect to the temporary storage position. Therefore, during a dive down operation in which the seat cushion S1 is displaced obliquely forward toward the floor 4, the ottoman S4 in the temporary storage position is in contact with the floor 4 and easily rotates toward the storage position. Therefore, the rotation angle of the temporary storage position can be set behind the vertical or the vertical which does not easily disturb the occupant.

  Thus, during the dive down operation, the front end surface 172 of the ottoman S4 contacts the lower portion 12 of the floor 4. In the present 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 frictional force when the front end surface 172 of the ottoman S4 and the floor 4 move relative to each other as the seat cushion S1 moves obliquely downward is increased, 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. Accordingly, it is possible to prevent the ottoman S4 from swinging in the vicinity of the pivot position where the ottoman S4 is suspended vertically during acceleration / deceleration of the vehicle or when the ottoman S4 is released from the redeployment position and returned to the temporary storage position. The ottoman S4 is also biased toward the storage position by the torsion coil spring 156 even in the temporary storage position, but the ottoman S4 can be held in the temporary storage position by the holding force of the detent mechanism 165. .

  In addition, the detent mechanism 165 holds the ottoman S4 in the storage position with a holding force large enough not to rotate downward due to its own weight, so that the ottoman S4 can be moved when the occupant rotates the ottoman S4 to the storage position. When the seat S is in the dive down posture, a gap can be formed between the ottoman S4 and the floor 4 in the storage position. In addition, 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 use state, it is possible to prevent a situation in which the occupant catches the ottoman S4 without noticing. .

  In the present embodiment, as shown in FIG. 12, the ottoman S4 has a torsion coil spring 156 as a biasing means for biasing the ottoman side frame 131 toward the storage position, so that any rotation angle can be obtained. Even in this case, the torsion coil spring 156 receives a biasing force toward the storage position. Therefore, when the dive down operation is performed, the ottoman S4 reliably rotates to the storage position. Further, when the seat S changes to the dive down posture, the ottoman S4 is not dragged by the seat cushion S1 and does not come into sliding contact with the floor 4, so that the support surface 171 of the ottoman S4 during the posture change 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 use state, it is possible to prevent a situation in which the occupant catches the ottoman S4 without noticing. .

  In this 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 of a predetermined dimension C is formed between the floor 4 and the floor 4. Thus, the ottoman S4 is not soiled by contact with the floor 4 when the sheet 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 that do not overlap each other. Therefore, the combined 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. Accordingly, the thickness of the seat S when the seat S shown in (B3) of FIG. 14 is in the dive down state or when the seat cushion S1 shown in (F2) of FIG. 15 is in the tip-up position. The size can be reduced, and the upper space of the seat S in FIG. 14 (B3) and the front space and the rear space of 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, protruding portions 173 extending from the rotation shaft side toward the free end side are formed at both ends in the left-right direction of the support surface 171 of the ottoman S4. As described above, the center portion 174 of the support surface 171 sandwiched between the projecting portions 173 is covered with the skin SK formed of synthetic leather, fabric, or the like. On the other hand, both projecting portions 173 are made of a material having higher hardness than synthetic leather or fabric, such as resin, and the surface thereof is formed more smoothly 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 fabric, 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 projections similar to those of the above-described embodiment, and has a larger friction with respect to the floor 4 than the projecting end surface of the projecting portion 173 (surface substantially parallel to the support surface 171). It is configured to have a coefficient. The protrusions are also formed on the front end surfaces of both projecting portions 173, and the front end surfaces of both projecting portions 173 are configured to have a larger coefficient of friction with respect to the floor 4 than the projecting end surfaces of the projecting portions 173. Has been.

  In this modification, when the support surface 171 of the ottoman S4 contacts the floor 4, the projecting portion 173 contacts the floor 4, and the central portion 174 covered with the skin SK contacts the floor 4. It is prevented. For example, during the change from the state (E2) to the state (E3) of the dive down operation of FIG. 15 (E), the front end surface 172 of the ottoman S4 shown in (E2) is in the lower portion 12 of the floor 4. Immediately after the contact, when the support surface 171 of the ottoman S4 contacts the lower portion 12 of the floor 4, the projecting portion 173 contacts the floor 4 instead of the central portion 174. Further, in the operation of changing the seat S from the dive-down state to the use state in FIG. 14C, the state shown in (C2), that is, the seat back S2 starts to be raised, and the rotation of the seat cushion S1 is caused by the seat base 26. When it 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 projecting portion 173 contacts the floor 4 instead of the central portion 174.

  Thus, even when the protrusions 173 come into contact with the floor 4, the surfaces of both protrusions 173 are formed more smoothly than the central part 174 of the support surface 171, so that the frictional resistance increases and the protrusions 173. Is suppressed from wearing. Moreover, it is easy to perform cleaning even when the protruding portion 173 is dirty.

  Next, a modified example of the sheet S having the ottoman S4 in the form shown in the 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 indicated by an imaginary line, and the right Ottoman side frame 131 is accommodated. Not biased to the position side. Further, in the sheet S of this modified example, as shown in FIG. 20, of the two concave portions 166 of the detent mechanism 165 that holds the ottoman S4 in the temporary storage position and the storage position, the concave portion on the right side in the figure corresponding to the storage position 166 is formed on the lower side in the drawing from the position of the recess 166 of the above-described embodiment shown by an imaginary line. That is, in this modification, the storage position of the ottoman S4 is set to a position (rotation angle) that is farther from the bottom surface of the seat cushion S1 than the storage position of the above embodiment.

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

  When changing the seat S from the use state to the dive down state when the ottoman S4 is in the temporary storage position, as shown in FIG. 21 (E1), the occupant operates the handle 68 (FIG. 1), The seat back S2 is gripped and rotated forward as indicated by an arrow. Then, as shown in (E2), the seat cushion S1 moves diagonally forward and the front end of the ottoman S4 comes into contact with the lower portion 12 of the floor 4. Subsequently, as the seat back S2 rotates forward and the seat cushion S1 moves obliquely forward and downward, a diagonally upward force from the floor 4 is applied to the tip of the ottoman S4, and the retention by the detent mechanism 165 is released. Thus, the ottoman S4 rotates to the storage position side. At this time, since the ottoman S4 does not receive the biasing force toward the storage position by the torsion coil spring 156, the ottoman S4 rotates while sliding the free end against the floor 4. Even in the dive-down state of the seat S in which the seat back S2 completely falls as shown in (E3), as shown in FIG. 22, the ottoman S4 keeps the free end in contact with the floor 4, and this rotational position is The storage position. In this state, the ottoman S4 is held by the detent mechanism 165.

  On the other hand, when returning the seat S in the dive-down position in which the ottoman S4 is in the storage position to the use state, as shown in FIG. 21 (C1), the occupant operates the handle 68, and the seat back S2 is indicated by an arrow. Rotate in the direction to wake up. At this time, since the tip-up mechanism 5 is not locked, 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. 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 located at the storage position. Thereafter, when the front end of the stand leg 37 engages with the wall portion 13 or the seat base 26 of the floor 4 and the occupant rotates the seat back S2 rearward as shown in (C3), the stand leg 37 is moved to the floor. By being hooked on the wall portion 13 or the seat base 26 and being raised, the ottoman S4 is separated from the floor 4 and the stand leg 37 moves to the use position.

  When the occupant further rotates the seat back S2 rearward, the stand leg 37 enters the support groove 35 of the stand base 34, and the seat back S2 is fixed at the use position and the seat cushion as shown in (C4). 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 and the ottoman S4 rotates, and as shown in (C5), the tentman S4 temporarily drops from the front end of the seat cushion S1. It is held by the detent mechanism 165 in the storage position. When the ottoman S4 is not used, the occupant again applies force to the ottoman S4 from the state of (C5) and rotates the ottoman S4 to the storage position slightly separated from the bottom surface of the seat cushion S1 shown in (C6). As a result, the ottoman S4 is held in the storage position by the detent mechanism 165.

  As described above, in the present modification, the ottoman S4 described in FIG. 21E performs the first sliding operation while sliding on the floor 4 when the dive down operation of the sheet S is performed in the state of being in the temporary storage position. 2 Rotate to the storage position. Therefore, the seat S shown in (E2) to (E3) in which the ottoman S4 contacts the floor 4 and rotates to the storage position on the bottom surface side of the seat cushion S1 does not have the torsion coil spring 156. Realized by configuration. In addition, in the sheet | seat S of this modification, since the support surface 171 of ottoman S4 contacts the floor 4, it is preferable to use ottoman S4 which has the protrusion part 173 demonstrated in the previous modification.

  Although the description of the specific embodiment is finished as described above, the present invention is not limited to the above embodiment and can be widely modified. For example, in the said embodiment, although the sheet | seat S was demonstrated as an object for vehicles as an example, the sheet | seat S can also be used for aircrafts and ships.

  Further, in the above embodiment, the seat S is a reclining mechanism as a seat back angle adjusting mechanism shown in FIG. 9 that can hold the seat back S2 at a desired angle in all angle ranges in which the seat back S2 can rotate. 3, but the seat S may not be provided with such a reclining mechanism 3, and the seat back S <b> 2 may be held at the use position by the vehicle body or the like when the seat S is in use.

  In the above embodiment, the seat S includes the engagement recess 101 and the lock member 102 as the seat cushion angle adjusting mechanism shown in FIG. 10 that can maintain the angle of the seat cushion S1 with respect to the seat back S2. Such a seat cushion angle adjusting mechanism may not be provided.

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

  For example, when there is no interference with the front row sheet or the like, when the sheet S performs a dive down operation, the sheet S may be displaced in a direction away from the floor 4, that is, an upper front side that is the development position side. Such an operation is performed, for example, by an interlocking mechanism for displacing the ottoman S4 to the deployed position side in conjunction with the rotation of the seat back S2, or by moving the ottoman S4 in conjunction with a change in angle of the seat cushion S1 with respect to the seat back S2. This can be realized by an interlocking mechanism that displaces them. Alternatively, the seat S is provided with electric displacement means for displacing the ottoman S4, and also provided with detection means for detecting that the ottoman S4 has approached or contacted the floor 4, and is electrically operated when proximity or contact is detected by the detection means. The displacement means may be configured to drive the ottoman S4 in a direction away from the floor 4.

  Alternatively, when the ottoman S4 comes into contact with the floor 4, it may be configured to perform an operation of rotating forward by a force received from the floor 4. In such a configuration, for example, the storage position (temporary storage position) of the ottoman S4 hanging from the front portion of the seat cushion S1 is set to an angle at which the lower portion is positioned forward with respect to the vertical direction, and the ottoman S4 is stored in the storage space. When the sheet S performs a dive-down operation in the position, the portion where the lower end (free end) of the ottoman S4 first contacts the floor 4 is defined as a forwardly descending and low friction inclined surface, and the lower end of the ottoman S4 Can be implemented by contacting the floor 4 at a shallow angle.

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

  Moreover, in the said embodiment, although the protrusion part 173 of ottoman S4 is set as the structure extended toward the free end side from the rotating shaft side of ottoman S4, if it is formed at least at the free end side, a free end A form in which a single or a pair of protrusions 173 are formed in the vicinity, or a form in which a plurality of protrusions 173 are formed separately on the left and right along the free end side, the rotation shaft side It is good also as a form etc. which are formed in and a free end side. Further, the front end surface 172 of the ottoman S4 may be formed of felt manufactured by a needle punch manufacturing method or the like, so that the protruding portion 173 of the support surface 171 has a larger coefficient of friction with respect to the floor 4 than that of the floor 4. .

  In addition, the specific configuration, arrangement, quantity, angle, material, and the like of each member and part can be changed as appropriate without departing from the spirit of the present invention. In addition, all the components of the sheet S shown in the above embodiment are not necessarily essential, and can be selected as appropriate.

4 Floor 5 Tip-up mechanism 26 Seat base 37 Stand leg 85 Cushion side frame 131 Ottoman side frame 156 Torsion coil spring (biasing means)
165 Detent mechanism 171 Support surface (foot support surface)
172 Front end surface 173 Protruding part 174 Center part S Seat S1 Seat cushion S2 Seat back S4 Ottoman

Claims (14)

A seat back pivotably attached to a seat base; and a seat cushion pivotally attached to the seat back, wherein the seat cushion is adapted to rotate forward. A vehicle seat configured to perform a dive-down operation that is displaced obliquely forward from a seating position toward the floor,
In a state where the seat cushion is in the seating position, the seat cushion is displaceable between a first storage position depending from the front portion of the seat cushion and a deployed position extending forward from the front portion of the seat cushion. It further has an ottoman provided in
The vehicle seat, wherein the ottoman can take a second storage position that does not interfere with the floor when the dive down operation is performed in the state of being in the first storage position.   The ottoman is provided on the seat cushion so as to be rotatable about a shaft extending in the lateral direction. When the dive down operation is performed in the state of being in the first storage position, the ottoman is applied to the floor. The vehicle seat according to claim 1, wherein the vehicle seat is provided so as to contact and rotate toward the second storage position by a force received from the floor.   The vehicle seat according to claim 2, wherein the second storage position is set on a bottom surface side of the seat cushion with respect to the first storage position.   4. The biasing force toward the second storage position by the biasing means acts on the ottoman when it is at the second storage position side at least with respect to a predetermined rotation angle. 5. The vehicle seat described.   5. The vehicle seat according to claim 4, wherein a gap is formed between the ottoman in the second storage position and the floor in a dive down posture after the dive down operation is performed. .   The ottoman rotates to the second storage position while sliding on the floor when the dive down operation is performed in the state of being in the first storage position. Vehicle seat.   The vehicle seat according to any one of claims 3 to 6, further comprising a detent mechanism that holds the ottoman in the first storage position with a sense of moderation.   The vehicle seat according to claim 7, wherein the detent mechanism holds the ottoman at the second storage position with a holding force large enough not to rotate downward due to its own weight.   The vehicle seat according to any one of claims 3 to 8, wherein a protrusion is formed on the free end side of the foot support surface of the ottoman.   The vehicle seat according to claim 9, wherein the protrusions are formed on the left and right ends of the foot support surface of the ottoman from the free end side along the rotation shaft side.   The left and right protrusions of the ottoman are made of a material having a hardness higher than that of the center portion of the foot support surface, and are formed more smoothly than the center portion of the foot support surface. The vehicle seat according to claim 9 or 10.   The front end surface on the free end side of the ottoman has a larger coefficient of friction with respect to the floor than a portion of the ottoman's foot support surface that contacts the floor. The vehicle seat according to claim 1. The seat cushion has a pair of left and right cushion side frames,
The vehicle according to any one of claims 1 to 12, wherein the ottoman has a pair of left and right ottoman side frames arranged on the outer side in the left and right direction with respect to a front portion of the cushion side frame. Sheet. A stand leg is rotatably provided inside the cushion side frame in the left-right direction,
When the stand leg is in the storage position along the bottom surface of the seat cushion and the ottoman is in the second storage position, the cushion side frame, the ottoman side frame, and the stand leg overlap in plan view. The vehicle seat according to claim 13, wherein the vehicle seat is provided at a position where it is not.

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