JP2019089551A - Vehicle seat - Google Patents

Abstract

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

Description

  The present invention relates to a vehicle seat provided with an ottoman on a seat cushion and capable of dive-down operation.

  2. Description of the Related Art In recent years, vehicle seats for automobiles and the like often include various mechanisms or devices for arranging the form of the seat. For example, the seatback is rotatably attached to the upper floor portion, the seat cushion is attached to be able to bounce up to the seatback side, and the tip up attitude in which the seat cushion is bounced to the seatback side, and the seatback with the tip up attitude. There is known a vehicle seat that can be changed to a dive-down posture in which the seatback is stored in the lower floor lower part of the upper floor upper part by turning over the front part (Patent Document 1).

Patent No. 4263628

  By the way, when an ottoman is provided on the seat cushion in a vehicle seat capable of dive-down operation, if the dive-down operation is performed while the ottoman is in the deployed position, the ottoman interferes with the floor and dives down There is a possibility that the operation can not be performed. Therefore, when it is desired to change the sheet to the dive-down posture, it is necessary to move the ottoman to a position not interfering 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 capable of a dive-down operation and provided with an ottoman on a seat cushion. To be an issue.

  In order to solve the above-mentioned subject, it is provided with a seat back (S2) rotatably attached to a 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 diagonally forward from the seating position toward the floor (4) in response to an operation of the seat back rotating forward. The seat cushion is displaceable between a first storage position depending from the front of the seat cushion and a deployed position extending forward from the front of the seat cushion when the seat cushion is in the sitting position. The ottoman further includes an ottoman (S4) provided on the seat cushion, and the ottoman performs the dive-down operation in the state of being 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 contact the floor but not to prevent the dive down operation.

  According to this configuration, since the ottoman in the first storage position is displaced to the second storage position not blocking the dive down operation during the dive down operation, the operation to displace the ottoman to the second storage position is performed in advance. Therefore, the dive-down operation can be performed, and the operation to change the sheet to the dive-down posture is facilitated.

  In the above invention, the ottoman is provided on the seat cushion so as to be pivotable about an axis extending in the lateral direction, and the dive down operation is performed in the first storage position. In this case, it may be configured to be in contact with the floor and to be pivoted 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 lower cost.

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

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

  In the above invention, when the ottoman is closer to the second storage position than at least a predetermined rotation angle, a biasing force to the second storage position by the biasing means (156) acts. Can be configured.

  According to this configuration, the ottoman can be held at 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 attitude 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 foot support surface of the ottoman does not contact the floor when the seat performs the dive down operation or in the dive down position, the foot support surface of the ottoman can be prevented from being soiled by the contact with the floor. .

  Further, in the above invention, when the dive-down operation is performed in the state where the ottoman is in the first storage position, the ottoman is configured to rotate to the second storage position while slidingly contacting the floor. Can.

  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, the detent mechanism (165) may be further included which holds the ottoman in the first storage position with a sense of moderation.

  According to this configuration, since the ottoman is held by the detent mechanism at the first storage position, the ottoman can be prevented from swinging during acceleration and deceleration. Further, when the ottoman receives the urging force toward the second storage position by the urging means, the ottoman can be held at the first storage position by the detent mechanism.

  Further, in the above invention, the detent mechanism can be configured to hold the ottoman with a large holding force such that the ottoman is not pivoted downward by its own weight in the second storage position.

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

  In the above invention, a projection (173) may be formed on the free end side of the foot support surface (171) of the ottoman.

  According to this configuration, when the seat is in the dive down position, the foot supporting surfaces of the ottomans other than the projecting portion do not contact the floor, so that the floor is not soiled and the foot supporting surfaces other than the projecting portion are not contaminated. it can.

  In the above invention, the projecting portion (173) may be formed at the left and right ends of the foot supporting surface of the ottoman along the pivoting shaft side from the free end side.

  According to this configuration, when the seat is in the dive-down position, the central portion of the foot support surface of the ottoman does not contact the floor, so the dirt on the floor adheres to the central portion of the foot support surface and the central portion becomes dirty. It can prevent.

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

  According to this configuration, the protrusion of the ottoman is smoother than the central portion of the foot support surface, so that it is easy to clean when the protrusion is dirty. In addition, although the protrusion of the ottoman is more likely to contact the floor compared to the central part of the foot support surface, it is smooth and made of a material whose hardness is higher than that of the central part. It is possible to prevent an increase in size and wear of the protrusion.

  In the above invention, the front end surface (172) on the free end side of the ottoman has a larger coefficient of friction against the floor than the portion (173, 171) in contact with the floor in the foot support surface. It can be done.

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

  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 in the left and right direction outside the front portion of the cushion side frame. It can be configured to have a frame (131).

  According to this configuration, since the ottoman side frame does not overlap with the cushion side frame in the left-right direction, it is possible to reduce the total thickness of the seat cushion and the ottoman in the state where the ottoman is in the second storage position.

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

  According to this configuration, it is possible to reduce the total thickness of the seat cushion, the ottoman and the stand leg in a state where the stand leg is in the storage position and the ottoman is in the second storage position.

  According to the above configuration, in the vehicle seat capable of the dive-down operation and provided with the ottoman on the seat cushion, the operation of changing the dive-down posture while the ottoman is in the deployed position can be facilitated. .

The perspective view of the vehicle seat concerning an embodiment A perspective view of a seat frame of a vehicle seat Right side view of seat frame of vehicle seat Top view of seat base of vehicle seat Top view of seat frame of vehicle seat Rear view of seat frame of vehicle seat A perspective view of a vehicle seat as viewed from the lower front side Schematic cross section of stand base Schematic of reclining mechanism Schematic of tip-up mechanism An exploded perspective view of an ottoman Schematic of the ottoman's angle adjustment mechanism Schematic of Ottoman's detent mechanism Operation explanation of the vehicle seat Operation explanation of the vehicle seat Perspective view of ottoman Top view of the seat frame when the stand leg and ottoman are in the stowed position Side view of a vehicle seat in dive-down state A perspective view of an ottoman according to a modification Schematic of the ottoman detent mechanism of the vehicle seat concerning a modification Operation explanatory drawing of the vehicle seat concerning a modification A side view showing a dive down state of a vehicle seat according to a modification

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

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

  As shown in FIG. 2 together, 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 a cushion frame F1 constituting the frame of the seat cushion S1, a back frame F2 constituting the frame of the seat back S2, a headrest frame F3 constituting the frame of the headrest S3, and a 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 provided on the seat surface side of the cushion frame F1, the backrest surface side of the back frame F2, and the support surface side of the headrest frame F3 and ottoman frame F4, respectively. Is attached and covered by the skin SK. Each pad P is formed of an elastic cushion material such as polyurethane foam. Each skin SK is formed of synthetic leather, cloth or the like. A cover made of a resin material is attached to the bottom side of the cushion frame F1, the back side of the back frame F2 and the back side of the ottoman frame F4, and the bottom, back and back sides are defined by these cover members. It may be

  The back frame F2 is attached to the floor 4 of the vehicle via the slide mechanism 2 and the reclining mechanism 3. Thus, the back frame F2 is slidable with respect to the floor 4 and can be turned (tilted) relative to the slide mechanism 2. The cushion frame F1 is rotatably attached to the back frame F2 via the tip-up mechanism 5. The headrest frame F3 is slidably attached to the back frame F2. The ottoman frame F4 is slidably attached to the cushion frame F1. Further, the ottoman frame F4 has an angle adjustment mechanism 6, and is adjustable in angle.

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

  As shown in FIGS. 4 to 7, the slide mechanism 2 is provided in a left-right pair with respect to one sheet S. Each slide mechanism 2 has a lower rail 15, an upper rail 16 displaceably attached to the lower rail 15, and a rail lock member 17 for fixing the upper rail 16 to the lower rail 15. The slide mechanism 2 can apply various known mechanisms. The lower rails 15 are disposed to extend in the front-rear direction at high positions 11 (FIG. 3) of the floor 4 at 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 slidably engaged with the lower rail 15 in the longitudinal direction.

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

  Slide members 21 are joined to the left and right upper rails 16 respectively. The left and right slide members 21 are formed by welding a plurality of pressed metal plates by welding or the like. The left and right slide members 21 extend longitudinally on the upper rail 16. The front ends of the left and right slide members 21 are connected by the slider front member 23, the rear ends are connected by the slider rear member 24, and middle portions in the front-rear direction are connected by the slider intermediate member 25. Each member 23, 24, 25 is formed of a metal pipe, is joined to each slide member 21 by welding, bolt fastening or the like, and extends in parallel right and left. Thus, 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 relative 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 the locked state and the released state, and is normally in the locked state under the biasing force of the spring that biases the rail lock member 17. The link member allows the left and right rail lock members 17 biased by the spring to engage with the lock holes in the locked state. When the link mechanism 28 is released from the locked state due to the operation of the occupant, the link mechanism 28 maintains the left and right rail lock members 17 in a state of being released 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 transmitting means is engaged with 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 around the slider front member 23 and the slider middle member 25. The stand base 34 is formed by pressing a metal plate or the like, and is welded at the front end to the center of the slider front member 23 in the left-right direction, and welded at the rear end to the center of the slider middle member 25 in the left-right direction. It is done. Support grooves 35 which extend in the left-right direction and reach both left and right ends of the stand base 34 are formed in the upper portion of the stand base 34. The support groove 35 opens upward and forward. 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 is a plunging position where it enters the support groove 35 from the side portion of the support groove 35 shown by a solid line in FIG. 8 with a rotation axis parallel to the axis of the support groove 35 (axis extending in the left-right direction). And a retracted position which is retracted to the outside of the support groove 35, which is shown by an imaginary line in FIG. A torsion spring 42 as biasing means is interposed between the stand base 34 and the locking claw 41, and the locking claw 41 is biased to the inrush position. The locking claw 41 locks the cross member 94 of the stand leg 37, which will be described later, in the intruding position, and prevents the cross member 94 from being separated from the support groove 35. The outer portion of the locking claw 41, that is, the portion facing the opening end side of the support groove 35 when the locking claw 41 is in the intruding position is formed as an inclined surface.

  As will be described in detail later, one end of a locking claw cable 43 as a force transmission means is locked to the locking claw 41. The locking claw 41 is pivoted from the plunging position to the retracted position when the locking claw cable 43 is pulled.

  As shown in FIG. 2, FIG. 5 and FIG. 6, the back frame F2 is welded to the lower portion of the pipe frame 45 formed in a vertically elongated rectangular frame shape and the left and right side portions extending vertically in the pipe frame 45 And left and right back side frames 46 joined together. The left and right back side frames 46 are formed by pressing a metal plate or the like. The left and right back side frames 46 have concave surfaces curved so as to hold the outer side surfaces of the lower portions of the left and right side portions of the pipe frame 45, and are joined to the left and right side portions of the pipe frame 45 by welding or the like There is. The lower portions of the left and right 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 stretched 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 upper portion of 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 facing in the left and right direction. The left side surface of the lower portion of the left back side frame 46 faces the right side surface of the left slide member 21 and is rotatably connected. As shown in FIGS. 5 and 7, the lower left side surface of the right back side frame 46 is opposed to the right side surface of the reclining mechanism 3 attached to the right slide member 21, and the right slide member 21 via the reclining mechanism 3. Is pivotally connected to the The pivot axes of the left and right back side frames 46 are arranged coaxially with each other.

  The reclining mechanism 3 can maintain the rotation (tilting) 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 when the release lever 51 is operated, the rotation angle of the right back side frame 46 with respect to the right slide member 21 can be changed. As such a reclining mechanism 3, various known mechanisms can be applied.

  As shown in FIG. 9, the reclining mechanism 3 as an example according to the present embodiment is joined to the lower plate 52 joined to the right slide member 21 and the lower part of the right side frame, and disposed opposite to the lower plate 52, The upper plate 53 rotatable relative to the lower plate 52, the connecting shaft 54 passing through the rotation centers of the lower plate 52 and the upper plate 53, and the internal space formed between the upper plate 53 and the lower plate 52 A cam plate 55 that rotates integrally with the connecting shaft 54, a plurality of lock members 56 disposed in the internal space, and a torsion spring 57 as biasing means that biases the cam plate 55 in one rotational direction. And. The lock member 56 engages with a guide groove 58 formed in the lower plate 52 and is disposed movably in the radial direction of the lower plate 52. The lock member 56 has a cam portion at a radially inward portion, has an external tooth 59 at a radially outward portion, and forms an inner periphery of an inner space of the upper plate 53 when moved radially outward. It engages with an internal tooth 61 formed circumferentially on the surface. The cam plate 55 engages with the lock member 56 and moves the lock member 56 radially outward when rotating in one rotational direction, and radially inward when rotating in the other rotational direction. Move to One end of the connecting shaft 54 penetrates the upper plate 53 and the right back side frame 46, and a release lever 51 (FIGS. 3 and 7) extending in the radial direction is joined to the end.

  In the reclining mechanism 3, normally, the cam plate 55 is biased in one rotational direction by the torsion spring 57, the lock member 56 is moved radially outward, and the outer teeth 59 of the lock member 56 are of the upper plate 53. Engage with the internal teeth 61. Thereby, relative rotation of the lower plate 52 and the upper plate 53 is prohibited via the lock member 56. That is, the reclining mechanism 3 is in the locked state in which the pivoting of the upper plate 53 relative to the lower plate 52 is prohibited by the biasing 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 rotational direction against the biasing force of the torsion spring 57, the lock member 56 is rotated. By moving radially inward, 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 lower plate 52 and upper plate 53 becomes possible. One end of a reclining cable 63 (FIGS. 3 and 7) as a force transmission means is engaged with the release lever 51. The release lever 51 is pivoted in the release direction by the reclining cable 63 being pulled.

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

  In the handle 68, the other end of the locking claw cable 43 whose one end is locked to the locking claw 41 (FIG. 8) and the other end of the reclining cable 63 whose one end is locked to the release lever 51 (FIG. 3) The other end is connected. The locking claw cable 43 and the reclining cable 63 are slidably held by the cylindrical outer tube. The locking claw outer tube 71 for holding the locking claw cable 43 will be described mainly with reference to FIG. 5 although its detailed layout is omitted, and one end thereof is fixed to the stand base 34 and the right slide member The right back side frame 46 and the right side of the pipe frame 45 extend upward, and the other end is fixed to the bracket 66. As shown in FIG. 3, one end of the reclining outer tube 72 holding the reclining cable 63 is fixed to the right side surface of the right back side frame 46, and the right side portion of the right back side frame 46 and the pipe frame 45 is fixed. It extends upward along and 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 on the handle 68 and turns the handle 68 in one rotational direction, the locking claw cable 43 is pulled to the handle 68 side, and the locking claw 41 (FIG. 8) moves from the plunging position to the retracted position. Then, the lock of the stand leg 37 by the locking claw 41 is released. At the same time, the reclining cable 63 is pulled toward the handle 68, and the release lever 51 (FIG. 3) is pivoted in the release direction, whereby the lock of the reclining mechanism 3 is released.

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

  As shown in FIGS. 2 and 5, a pair of headrest holding portions 78 for supporting the headrest S <b> 3 is joined to the upper side portion of the pipe frame 45. The headrest holding portion 78 has a cylindrical shape, and a support 79 which is a cylindrical member made of resin is inserted inside. The headrest S3 is attached to the upper side portion of the pipe frame 45 by inserting a pair of headrest pillars 80 which are a part of the headrest frame F3 into the headrest holding portion 78 via the support 79.

  In place of the pipe frame 45, a plurality of auxiliary frames 82 formed by metal rods are welded. The auxiliary frame 82 is extended between the left and right side parts, disposed to extend leftward from the left side edge, and extended to extend rightward from the right side edge. Including things etc. The auxiliary frame 82 compensates for the gap of the pipe frame 45 and supports the seat back pad P2.

  As shown in FIGS. 2 and 5, the cushion frame F1 includes a pair of left and right cushion side frames 85 extending longitudinally, a cushion front member 86 connecting between the front ends of the left and right cushion side frames 85, and left and right cushion side frames And a cushion rear member 87 connecting between the rear portions of the 85. The left and right cushion side frames 85 are formed by pressing a metal plate or the like, and are bent and raised so that the main surfaces face left and right, and the edge parts protrude outward in the left and right directions. The rear end portions of the left and right cushion side frames 85 bend with respect to the front extending in the front-rear direction, and extend rearward and obliquely upward. The cushion rear member 87 is provided at the bending 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 faces 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, at the top of the right back side frame 46, a fastening seat 88 which protrudes to the right and whose projecting end has a planar shape is formed. A support plate 89 is joined to the fastening seat 88 by bolt fastening or the like. Below the fastening seat 88 in the right back side frame 46, a recess 90 that forms a gap with the support plate 89 is formed. The support plate 89 is a metal plate whose main surfaces face left and right and extends vertically, and its upper end is joined to the fastening seat 88. The 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 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 axes of the left and right cushion frames extend leftward and rightward, respectively, and are arranged coaxially with each other.

  Returning to FIG. 2 and FIG. 5, a center support member 91 extending in the front and rear direction is stretched around the cushion front member 86 and the cushion rear member 87. The center member is a member for supporting the seat cushion pad P1 and the buttocks of the occupant from below at the central portion of the cushion frame F1, and preferably has elasticity. In the present embodiment, the center support member 91 is a plate (center plate) formed by pressing a metal plate or the like, and the main surface is vertically oriented and the front end portion in the left-right direction of the cushion front member 86 It is welded to the central portion, and is welded to the central portion in the left-right direction of the cushion rear member 87 at the rear end portion. The width of the center support member 91 in the left-right direction is about 1/3 of the cushion front member 86. The center support member 91 is provided with reinforcing beads and lightening for weight reduction in place. In another embodiment, the center support member 91 may be composed of an elastic member such as a wire spring. Further, a plurality of center support members 91 may be provided in the width direction.

  As shown in FIG. 7, stand legs 37 are rotatably attached to the left and right cushion side frames 85. The stand leg 37 is pivotably attached at one end to the left and right cushion side frames 85, and a pair of left and right arms 93 extending at the other end, and a lateral member 94 connecting the other ends of the left and right arms 93 And the outer shape is formed in a substantially U-shape. Most of the left and right arms 93 and the cross member 94 are formed by bending a metal pipe in a substantially U-shape. One end of the left and right arms 93 is formed by a bracket welded to a pipe, and the bracket is rotatably attached to the left and right cushion side frames 85. When the stand leg 37 is viewed from the left and right (FIG. 3), a storage position shown by an imaginary line, in which the cross 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 be pivoted between the cushion side frame 85 and a use position shown by a solid line, which protrudes downward. The stand leg 37 is disposed outside the cover forming the bottom 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 be inserted into the support groove 35 of the stand base 34, as shown in FIG. By the stand leg 37 being locked in the support groove 35, the seat cushion S1 is supported from below by the stand leg 37, and the seat surface (upper surface) is disposed in the seating position extending substantially horizontally. In addition, the stand leg 37 is locked to the support groove 35, whereby the rotation from the use position to the storage position is restricted. That is, when the stand leg 37 is locked in the support groove 35, the rotational position of the seat cushion S1 with respect to the seat back S2 is determined.

  When inserting the cross member 94 of the stand leg 37 into the support groove 35, the cross member 94 pushes the inclined surface of the locking claw 41 and the locking claw 41 is moved from the plunging position against the biasing force of the torsion spring 42. Rotate to the retracted position. When the cross member 94 is inserted into the support groove 35, the locking claw 41 is pivoted to the intruding position by the biasing force of the torsion spring 42. The locking claw 41 locks the cross member 94 in the intruding position, and prevents the cross member 94 from being separated from the support groove 35. When it is desired to separate the pipe portion from the support groove 35, the occupant operates the handle 68 (FIG. 1) to position the locking claw 41 in the retracted position via the locking claw cable 43.

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

  The tip-up mechanism 5 as an example according to the present embodiment is, as shown in FIG. 10, an engagement recess 101 formed of a notch formed at the edge of the lower end of the support plate 89, and the right side of the right cushion side frame 85. A locking member 102 rotatably mounted on the surface and displaceable between an engaged position shown by an imaginary line engaging with the engagement recess 101 and a released position shown by a solid line separated from the engagement recess 101; A rubber (not shown) as biasing means provided between the member 102 and the right cushion side frame 85 for biasing the locking member 102 to the engaged position, and rotatable to the right side surface of the right cushion side frame 85 , And a phantom line for disengaging the lock member 102 from the first position shown by a solid line for engaging the lock member 102 to position the lock member 102 in the release position. Provided between the cam member 103 pivoting between the second position and the cam member 103 and the right side surface of the right cushion side frame 85, as biasing means for biasing the cam member 103 to the second position And a tension coil spring 104.

  At least one or more engaging recesses 101 are provided. When one of the engagement recesses 101 is located at the limit position (referred to as a tip-up position) where the seat cushion S1 is pivoted upward in the pivotable range, that is, the seat surface (upper surface) of the seat cushion S1 is the seatback S2 The lock member 102 is formed at a position where the lock member 102 can be engaged when it comes closest to the support surface (front surface). When the seat cushion S1 is positioned at the tip-up position, the front portion of the right cushion side frame 85 is substantially parallel to the right side portion of the pipe frame 45. The other engagement recess 101 may be formed at a position where the lock member 102 can be engaged at any angle between the seating position of the seat cushion S1 and the tip-up position. Thus, 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 rotational position is engaged with the engagement recess 101. , And maintain the right cushion side frame 85 at a predetermined angle.

  The engagement recess 101 maintains the engagement with the lock member 102 when the right cushion side frame 85 rotates downward with respect to the support plate 89, and the rotation of the right cushion side frame 85 with respect to the support plate 89. Configured to allow the lock member 102 to disengage when the right cushion side frame 85 pivots upward with respect to the support plate 89, and to allow pivoting of the right cushion side frame 85 relative to the support plate 89. You may According to this configuration, even after the lock member 102 engages with the engagement recess 101, the upward movement of the right cushion side frame 85 becomes possible, and the right cushion side frame 85 is further rotated upward. The locking member 102 engages with the next engaging recess 101, and can raise the right cushion side frame 85 to a desired angle even when the cam member 103 is in the second position shown by an imaginary line.

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

  The first tip-up outer tube 108 is attached such that one end thereof is on the right side surface of the right cushion side frame 85 and the opening thereof is directed to the cam member 103 side. The first tip-up outer tube 108 extends forward from one end along the right side surface of the right cushion side frame 85, as shown in FIGS. 3 and 5, and passes through the lower front end of the right cushion side frame 85 to form a right cushion. It extends to the left side of the side frame 85. A bracket 111 is joined to a lower portion of the front end of the right cushion side frame 85, and the other end of the first tip-up outer tube 108 is fixed to the bracket 111 such that the opening is directed rearward. The other end of the first tip-up cable 106 is fixed to the end of the right arm 93 of the stand leg 37. As shown in FIG. 10, when the stand leg 37 is located at the storage position shown by the imaginary line, the other end (end of the right arm 93) of the first tip-up cable 106 is the first tip-up outer tube 108. When the first tip-up cable 106 slackens in proximity to the other end of the first tip-up cable 106 and the first tip-up cable 106 is positioned at the use position shown by the solid line, the other end (end of the right arm 93) The first tip-up cable 106 is pulled apart from the other end of the outer tube 108. That is, when the stand leg 37 is in the use position, the cam member 103 is pulled by the first tip-up cable 106 to be in the first position shown by the solid line in FIG. Located in position.

  The second tip-up outer tube 109 is attached such that one end thereof is on the right side surface of the right cushion side frame 85 and the opening thereof is directed to the cam member 103 side. As shown in FIGS. 3 and 5, the second tip-up outer tube 109 extends from the one end to the left side of the right cushion side frame 85 through the middle lower portion in the front-rear direction of the right cushion side frame 85, and then the right Along the left side of the cushion side frame 85, it extends near the pivot axis of the right cushion side frame 85. Thereafter, as shown in FIGS. 3 and 6, the second tip-up outer tube 109 encircles the rear of the right back side frame 46 from the vicinity of the pivot axis of the right cushion side frame 85, and the right back side frame 46 The right back side frame 46 extends in the vicinity of the pivot axis of the right back side frame 46 along the reinforcing plate 47 disposed on the left side of the frame. The other end of the second tip-up outer tube 109 is directed downward to a protrusion 112 (FIG. 6) integrally formed with the reinforcing plate 47 so as to protrude inward from the left side surface of the reinforcing plate 47. It is fixed. The second tip-up cable 107 is locked to the left side surface of the lower plate 52 (FIG. 9) attached to the right slide member 21. The projecting portion 112 functions as a fixing portion for fixing the other end of the second tip-up outer tube 109, and is formed so as to protrude to a position overlapping the right slide member 21 in the left-right direction. By abutting the right slide member 21 when the frame 46 pivots backward, it functions as a stopper that restricts further pivoting of the right back side frame 46 rearward.

  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 for the second tip-up as the seatback S2 is inclined forward from the standing state with respect to the floor 4. The other end of the cable 107 is set apart from the other end of the second tip-up outer tube 109. As a result, the second tip-up cable 107 is pulled to the other end side as the seatback S2 inclines forward, and when the forward inclination of the seatback S2 becomes a predetermined angle or more, the cam member 103 (FIG. 10) The lock member 102 is positioned at a first position shown by a solid line in FIG. 10 by being pulled by the tip-up cable 107, and at the release position also shown by a solid line. That is, the first chip-up cable 106 and the first chip-up outer tube 108, and the second chip-up cable 107 and the second chip-up outer tube 109 are chips for releasing the lock of the chip-up mechanism 5, respectively. The up lock cancellation mechanism 113 is configured.

  Since two of the first tip-up cable 106 and the second tip-up cable 107 are connected to the cam member 103, the cam member 103 is at least one of the first tip-up cable 106 and the second tip-up cable 107. Is at the first position in a state of being pulled to the other end side, and the lock member 102 is at the release position. In other words, the first tip-up cable 106 and the second tip-up cable 107 are both slackened, that is, the forward inclination angle of the seat back S2 is less than or equal to a predetermined value (that is, standing up). Is in the storage position, the cam member 103 is in the second position shown 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 the cylindrical first rail outer tube 114, and the second rail cable 32 is the cylindrical second rail outer tube 115. Is held slidably by the One end of the first rail outer tube 114 and one end of the second rail outer tube 115 are locked to the fixed part of the link mechanism 28, and one end of the first rail cable 31 and the second rail cable 32 is the link mechanism 28. It is locked to the movable part. In another example, one end of the first rail outer tube 114 and one end of 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, along the left side surface of the right back side frame 46, the right cushion side frame 85 as shown in FIG. Extends to the vicinity of the pivot axis of the The first rail outer tube 114 wraps around the rear of 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 pivot axis of the right cushion side frame 85 of the right cushion side frame 85. It extends to the left side. Thereafter, as shown in FIG. 5, the first rail outer tube 114 extends forward along the left side surface of the right cushion side frame 85 to the cushion rear member 87, passes below the center support member 91, and is diagonally left It extends forward and extends to a bracket 117 joined to the lower 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 protrudes forward from the other end of the first rail outer tube 114, and a first holding member 118 is attached. 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 to a 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 such that the opening is directed rearward. The other end of the second rail cable 32 protrudes rearward from the other end of the second rail outer tube 115, and a second holding member 122 is attached. 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 first gripping member 118 and the second gripping member 122 are straps including a woven fabric, a cord, a rope, and the like, and have flexibility. In the present embodiment, the first gripping member 118 and the second gripping member 122 are formed in a loop shape by folding a band-like band. As shown in FIGS. 1 and 7, a passage (not shown) through which the first gripping member 118 passes back and forth is formed at the front of the seat cushion pad P1 (FIG. 2), and the front end face of the seat cushion pad P1. Attached to the skin SK of 125 is a grommet 127 which defines a hole through which the first gripping member 118 passes. Thereby, the tip end portion of the first gripping member 118 passes through the grommet 127 and protrudes from the front end surface of the seat cushion S1.

  The occupant can pull the cable 31 for the first rail 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 gripping the second grip member 122 and pulling it backward. When at least one of the first rail cable 31 and the second rail cable 32 is pulled, the link mechanism 28 is released from the locked state, and the left and right rail lock members 17 are released from the respective lock holes. The upper rail 16 can move relative to it. That is, the sheet S attached to the upper rail 16 can move forward and backward with respect to the floor 4.

  As shown in FIG. 2, FIG. 5 and FIG. 11, the ottoman frame F4 has its proximal end portion rotatably attached to the left and right ends of the base member 130 and the left end and right end of the base member 130 respectively. A pair of left and right ottoman side frames 131 extending to the front end and an ottoman front member 132 extending to the left and right and connecting the front ends of the left and right ottoman side frames 131 are formed in a rectangular frame shape. A plurality of ottoman auxiliary members 134 connecting the left and right ottoman side frames 131 are bridged between the base member 130 and the ottoman front member 132. The base member 130 and the ottoman front member 132 are formed of metal pipes. The left and right ottoman side frames 131 are formed by pressing a metal plate or the like, and the main surfaces thereof are directed to the 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 at intervals in the left and right. The left and right ottoman pillars 135 are formed of solid metal rods and extend in parallel with each other at a distance in the left-right direction.

  The base member 130 is covered with a tubular base member pad 138 (FIG. 1). The outer surface of the base member pad 138 is covered by the skin SK. The ottoman pad P4 (FIG. 2) has a substantially rectangular outer shape and is attached so as to cover the tip end side of the left and right ottoman side frames 131 excluding the base end, the ottoman front member 132 and the ottoman auxiliary member 134 Is formed. The surface skin SK of the ottoman S4 is provided so as to cover the ottoman pad P4, the distal end side of the left and right ottoman side frames 131 except for the base end, the ottoman front member 132 and the ottoman auxiliary member 134. The base end portions of the ottoman pads P4 and the left and right ottoman side frames 131 protruding from 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 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 in which both ends of the cross-sectional square are open. The pillar support portion 141 is a portion corresponding to the 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 the portion between the right cushion side frame 85 and the right edge of the center support member 91. And the corresponding part. The pillar support portion 141 is disposed so that the axis extends longitudinally in the lower part of the cushion front member 86, and the upper part thereof projects into the longitudinally extending recess 143 formed in the lower part of the cushion front member 86. Are joined by In each pillar support portion 141, a support 142 which is a cylindrical member made of resin is inserted. The left and right ottoman pillars 135 are inserted into the inner hole of the support 142 attached to the pillar support portion 141. Thus, the ottoman frame F4 is attached to the cushion frame F1.

  A plurality of locking grooves 146 are formed at intervals in the longitudinal direction on at least one side surface of the two ottoman pillars 135. In the present embodiment, the locking groove 146 is formed in the right ottoman pillar 135. As shown in FIG. 1, the front end portion of the support 142 is disposed on the outer surface of the skin SK of the seat cushion S1. Returning to FIG. 11, the locking member 147 is displaceably received at the front end of the support 142. The locking member 147 is displaceable between a plunging position which plunges into the inner hole of the support 142 and a retracted position separated from the inner hole, and is biased to the plunging 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, and constitutes an operation portion 148 which can be operated by the occupant. The occupant can displace the locking member 147 from the plunging position to the retracted position by pushing the operating portion 148 against 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 ottoman side frames 131 on the left and right with respect to the base member 130 can be pivoted between the storage position (see FIG. 14 (A1)) and the fully deployed position (see the imaginary line in FIG. 15 (D3)). . A temporary storage position (see FIG. 15 (D1)) is set between the storage position and the fully deployed 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 down from the base member 130 substantially vertically. In the fully deployed position, the ottoman S4 protrudes forward with respect to the seat cushion S1, and the support surface of the ottoman S4 faces in 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 adjustment mechanism 6 allows clockwise rotation (rotation to the most developed position side) with respect to the base member 130 of the right ottoman side frame 131 while viewing the ottoman S4 from the left, and also temporarily storing position and most developed position Anticlockwise rotation (rotation to the storage position side) with respect to the base member 130 of the right ottoman side frame 131 in the angular range between. In addition, after the rotation of the ottoman side frame 131 with respect to the base member 130 reaches the fully deployed position, the angle adjustment mechanism 6 rotates clockwise with respect to the base member 130 of the right ottoman side frame 131 until the accommodation position is reached. Tolerate. As such an angle adjustment mechanism 6, various known mechanisms can be applied.

  The angle adjusting mechanism 6 as an example according to the present embodiment can be rotated to 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 as shown in FIG. Provided between the claws 152 engageable with the ratchet teeth 151 and the left side surface of the claws 152 and the right ottoman side frame 131 and urges the claws 152 toward the ratchet teeth 151. It has a torsion spring 153, a cam body 154 rotatably mounted coaxially on the base member 130, and a projection 155 provided on the base member 130. Further, between the base member 130 and the right ottoman side frame 131, there is provided a torsion coil spring 156 which always biases the right ottoman side frame 131 to the storage position side. The engagement of the claws 152 with the ratchet teeth 151 prevents the rotation of the right ottoman side frame 131 relative to the base member 130 toward the storage position. In addition, when the right ottoman side frame 131 rotates to the most deployed position side with respect to the base member 130, the claws 152 can be separated from the engaged ratchet teeth 151 and engaged with the next ratchet teeth 151. Can.

  The cam body 154 is recessed radially inward of the base member 130 with respect to the large diameter portion 157 which protrudes outward in the radial direction of the base member 130 from the projecting end of the ratchet teeth 151 and the base circle of the ratchet teeth 151. And a small diameter portion 158. The claw body 152 can be engaged with the ratchet teeth 151 when the small diameter portion 158 of the cam body 154 faces, and abuts on the large diameter portion 157 when the large diameter portion 157 of the cam body 154 faces. It can not engage with the ratchet teeth 151. The claw body 152 contacts the boundary between the small diameter portion 158 and the large diameter portion 157 when facing the small diameter portion 158 of the cam body 154, and rotates the right ottoman side frame 131 with respect to the base member 130 to the most developed position side. The cam body 154 is rotated according to. The rotation of the right ottoman side frame 131 to the most developed position side with respect to the base member 130 advances, and the cam 155 engages with the first stopper surface 161 of the cam body 154 when the predetermined angle near the most developed position is reached. The rotation of the 154 relative to the base member 130 is restricted. Thus, the claws 152 rotate relative to the cams 154 and ride on the outer periphery of the large diameter portion 157. In this state, the claws 152 can not engage with the ratchet teeth 151, so that the storage position of the right ottoman side frame 131 with respect to the base member 130 can be turned.

  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 a frictional force from the claw body 152 It rotates relative to the base member 130 with the body 152 and the right ottoman side frame 131. When the rotation of the right ottoman side frame 131 with respect to the base member 130 advances to the storage position side and the claw body 152 goes beyond the range opposed to the ratchet teeth 151, the projection 155 engages with the second stopper surface 162 of the cam body 154. Thus, 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 claws 152 can be engaged with the ratchet teeth 151 again, and the claws 152 engage with the ratchet teeth 151 when the right ottoman side frame 131 rotates to the most developed position side with respect to the base member 130. Match.

  The detent mechanism 165 holds the ottoman S4 with a sense of moderation at a predetermined rotational position, that is, half locks the ottoman S4 with a larger holding power than the rotational positions before and after that. The detent mechanism 165 is configured to hold the ottoman S4 at two positions, the temporary storage position and the storage position. As such a detent mechanism 165, various known mechanisms can be applied. In the present embodiment, as shown in FIG. 13, a recess 166 is formed on the outer peripheral surface of the base member 130, and a half lock member 167 is provided on the ottoman side frame 131 slidably and engageable with the recess 166. The half lock member 167 is biased toward the base member 130 by the means 168. The engagement surface of the recess 166 and the half lock member 167 is formed 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 engage 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 from each other. The rotational load is set to a larger value 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. 14 and 15.

  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 sitting 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 as shown by the arrow and bounces it to the seat back S2 side, (A2) As shown, the seat cushion S1 can be pivoted to the upper limit position (tip-up position) along the front surface of the seat back S2. In this state, the stand leg 37 is in the use position where it protrudes 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. The position 102 is 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 turned in the direction of the arrow and moved to the storage position, as shown in (A3), the tip-up mechanism 5 becomes lockable, the turning position of the seat cushion S1 is fixed, and the seat cushion S1 is a tip The sheet S is held in the tip-up posture in the up position.

  Next, in the same state as (A1) shown in (B1), when the lock of the stand leg 37 and the lock of the reclining mechanism 3 are released by operating the handle 68 (FIG. 1), the seat back S2 can be turned forward. It will be possible. In this state, the tip-up mechanism 5 can not be locked, and the relative angle between the seat back S2 and the seat cushion S1 can be changed. When the seat back S2 pivots forward, as shown in (B2), the stand leg 37 moves away from the support groove 35 (FIG. 8) of the stand base and moves forward. In addition, the stand leg 37 falls by turning so that the seat back S2 falls forward, and the seat S falls on the lower part of the floor 4 as shown in (B3), the seat cushion S1, the seat back S2 and the ottoman S4. The dive down attitude stored in 12 is obtained. 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 inclined forward by a predetermined angle or more. The cam member 103 of 5 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 with respect 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 release the lock of the reclining mechanism 3, and the seat back S2 is combined with the seat cushion S1 as shown by the broken arrow. The sheet S can also be changed to the dive-down attitude of (B3) by tilting it 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 indicated by the arrow. Rotate to. At this time, since the lock by the tip-up mechanism 5 is not engaged, as shown in (C2), the seat cushion S1 does not rise with the seat back S2, but moves backward so as to be dragged by the seat back S2, The tip of the hook engages with the wall 13 or the seat base 26 of the floor 4. As shown in (C3), when the occupant rotates the seat back S2 to the rear as it is, the stand leg 37 is caught on the wall portion 13 or the seat base 26 of the floor 4 and is moved to the use position. When the occupant further rotates the seat back S2, the cross member 94 (FIG. 8) of the stand leg 37 pushes into the support groove 35 of the stand base 34 while pushing away the locking claw 41, as shown in (C4). Thus, the seatback S2 is fixed in the use position and the seat cushion S1 is fixed in the sitting position. The ottoman S4 does not engage with the wall portion 13 of the floor 4 because the stand leg 37 is raised and the bottom surface of the seat cushion S1 is separated from the floor 4, and the seat S is in the sitting state shown in (C4). It is held at the storage position by the biasing force of the torsion coil spring 156 and the holding force of the detent mechanism 165.

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

  As shown in (D1) of FIG. 15, when the ottoman S4 is further rotated in the direction shown by the arrow from the state of being in the temporary storage position, as shown in (D2), the ottoman S4 rotates the occupant by the angle adjustment mechanism 6. It is fixed at a desired rotation angle (deployed position) according to the movement operation (rotation to the temporary storage position side is prohibited). In addition, the occupant operates 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 longitudinal direction, and fix it at that position. it can. When using the ottoman S4 is finished, turn the ottoman S4 in the direction shown by the arrow in (D2) and move it to the most developed position shown by the broken line in (D3), and fix by the angle adjustment mechanism 6 It can be released. When the fixation by the angle adjustment mechanism 6 is released, the ottoman S4 is pivoted downward by its own weight and the biasing force of the torsion coil spring 156, and is held at the temporary storage position.

  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 (E1), the occupant operates the handle 68 (FIG. 1) to stand the leg The lock 37 and the lock of the reclining mechanism 3 are released, and the seat back S2 is gripped and rotated forward as shown by the arrow. At this time, as shown in (E2), the tip of the ottoman S4 abuts on the lower part 12 of the floor 4 and the seat cushion S1 moves diagonally forward and downward from the floor 4 so that the force of the rear diagonal upward from the ottoman S4 In addition to the tip, the ottoman S4 pivots toward the storage position. As shown in (E3), in the dive-down state of the sheet S in which the seat back S2 is completely collapsed, the ottoman S4 is positioned at the storage position under the urging force of the torsion coil spring 156, and the detent mechanism Hold by 165. Therefore, when the occupant performs an operation for returning the seat S from the dive down state to the use state, a series of operations are shown in FIG. 14C, the ottoman S4 is in the storage position even if the seat S returns to the use state. It will remain held.

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

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

  Next, the ottoman S4 will be described in more detail. As shown in FIG. 16, in the ottoman S <b> 4, the surface facing upward in the deployed state is a support surface 171 that supports the occupant's foot. The support surface 171 is covered by the skin SK formed of synthetic leather, cloth or the like as described above. On the other hand, unlike the support surface 171, the front end surface 172 of the ottoman S4 is formed of a material such as a resin having a hardness higher than that of synthetic leather or fabric. Further, a large number of small protrusions are formed on the surface of the front end surface 172 of the ottoman S 4 so as to have a larger coefficient of friction with the floor 4 than the support surface 171. Here, the friction coefficient is a dynamic friction coefficient.

  The ottoman frame F4 will also be described in more detail with reference to FIG. The ottoman frame F4 is formed in a rectangular frame shape as described above, and has a pair of left and right ottoman side frames 131 and the like. And the ottoman frame F4 is formed wider than the width dimension of the front part of the cushion frame F1. The left and right ottoman side frames 131 are disposed 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 pivotally attached to the left and right cushion side frames 85 are arranged so that the brackets welded to the end on the pivot axis face the inner surface of the front of the left and right cushion side frames 85 It is done. That is, the stand leg 37 is formed narrower than the width dimension of the front portion of the cushion side frame 85. Therefore, as shown in FIG. 17, even when the stand leg 37 is in the storage position along the bottom surface of the seat cushion S1 and the ottoman S4 is in the storage position, the stand leg 37, the cushion side frame 85, and the ottoman side frame 131. Are arranged so as not to overlap each other.

  When the sheet S is dived down with the ottoman S4 in the temporary storage position described in (E) of FIG. 15 as a result of the sheet S being configured as described above, as shown in (E2) The tip end of the ottoman S4 abuts on the lower part 12 of the floor 4, the holding by the detent mechanism 165 (FIG. 13) at the temporary storage position is released, and it pivots rearward (the storage position) than the temporary storage position. Then, the ottoman S4 is rotationally driven to the storage position by the biasing force of the torsion coil spring 156 (FIG. 12), moves to the storage position along the bottom surface of the seat cushion S1, and is again held by the detent mechanism 165.

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

  As described above, in the ottoman S4, two storage positions, a temporary storage position in which the seat cushion S1 is suspended from the front of the seat cushion S1 when the seat cushion S1 is in the sitting position, and a storage position closer to the bottom surface of the seat cushion S1. Is set so that the ottoman S4 is held at both storage positions. Thus, the ottoman S4 can be disposed at the storage position where the ottoman S4 is not exposed when the sheet S is in the dive-down posture, and the ottoman S4 is disposed at the temporary storage position during normal use without performing the dive-down operation. When the occupant seated on the seat S in the deployed state deploys the ottoman S4, it does not reach to the free end of the ottoman S4 in the storage position along the bottom of the seat cushion S1, but below the front of the seat cushion S1. It can be easily operated by extending the hand and pulling up the free end of the ottoman S4.

  As described above, at the time of the dive-down operation of the sheet S, the ottoman S4 is displaced toward the storage position not interfering with the floor 4, and the ottoman S4 at the temporary storage position does not block the dive-down operation. Because of the rotational displacement, it is not necessary to displace the ottoman S4 in the temporary storage position by a separate operation before performing the dive down operation, and the operation of changing the sheet S to the dive down attitude is easy.

  Further, in the dive-down operation, the front end face 172 abuts on the lower portion 12 of the floor 4 and the ottoman S4 rotates by the force received from the floor 4 with the forward and downward displacement of the seat cushion S1. Therefore, there is no need to provide a mechanism for displacing the ottoman S4 regardless of the dive down operation, the sheet S can be simplified, and the manufacturing cost of the sheet S can be reduced.

  The ottoman S4 is rotatably provided to a storage position closer to the bottom surface of the seat cushion S1 than the temporary storage position, and the storage position of the ottoman S4 is set on the bottom surface side of the seat cushion S1 with respect to the temporary storage position. Therefore, at the time of dive down operation in which the seat cushion S1 is displaced diagonally forward toward the floor 4, the ottoman S4 in the temporary storage position abuts on the floor 4 and is easily pivoted to the storage position side. Therefore, it is possible to set the rotation angle of the temporary storage position to the vertical which is less likely to disturb the occupant or to the rear of the vertical.

  As described above, in the dive-down operation, the front end surface 172 of the ottoman S 4 abuts on the low-level portion 12 of the floor 4. In the present embodiment, the front end surface 172 of the ottoman S 4 has a larger coefficient of friction with 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 increases with the forward and downward displacement of the seat cushion S1, and the force for rotating the ottoman S4 reliably in the ottoman S4. In addition, the ottoman S4 is reliably rotated to the storage position.

  In the present embodiment, the ottoman S4 is held by the detent mechanism 165 (FIG. 13) with a large holding force at the temporary storage position as compared with the front and rear rotational positions. Accordingly, it is possible to prevent the ottoman S4 from swinging in the vicinity of the pivoting position vertically suspended when the vehicle is accelerating or decelerating or when the ottoman S4 is released from the redeployed position and returned to the temporary storage position side. Further, the ottoman S4 is biased toward the storage position by the torsion coil spring 156 also in the temporary storage position, but it is possible to hold the ottoman S4 in the temporary storage position by the holding force of the detent mechanism 165 .

  In addition, the detent mechanism 165 holds the ottoman S4 with a large holding force so that the ottoman S4 does not pivot downward by its own weight in the storage position, thereby causing the ottoman S4 to rotate when the occupant rotates the ottoman S4 to the storage position. It is held in the storage position, and it is possible to form a gap between the ottoman S4 in the storage position and the floor 4 when the sheet S is in the dive down position. In addition, since the ottoman S4 can be held at the storage position even when the occupant returns the seat S from the dive down state to the use state, a situation in which the occupant does not notice the hooking of the ottoman S4 is prevented .

  In the present embodiment, as shown in FIG. 12, the ottoman S4 has a torsion coil spring 156 as biasing means for biasing the ottoman side frame 131 toward the storage position, and any rotation angle 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 pivots to the storage position. In addition, when the seat S changes to the dive-down posture, the support surface 171 of the ottoman S4 in the middle of the change in posture becomes dirty because the ottoman S4 is not dragged by the seat cushion S1 and slides on the floor 4. It can prevent. Furthermore, since the ottoman S4 can be held at the storage position even when the occupant returns the seat S from the dive down state to the use state, a situation where the occupant does not notice the hooking of the ottoman S4 is prevented .

  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 size C is formed between the and the floor 4. As a result, when the sheet S is in the change to the dive down attitude, the ottoman S4 is not soiled by the contact with the floor 4.

  Furthermore, 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 Stand legs 37 are provided at non-overlapping positions, respectively. Therefore, it is possible to reduce the total thickness of the seat cushion S1, the ottoman S4 and the stand leg 37 when the stand leg 37 and the ottoman S4 are stored. Thus, the thickness of the sheet S when the sheet S shown in (B3) of FIG. 14 is in the dive down state or when the seat cushion S1 shown in (F2) of FIG. The size can be reduced, and the space above the sheet S in FIG. 14 (B3) and the space before and behind the sheet S in FIG. 15 (F2) can be enlarged.

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

  The front end surface 172, which is the free end surface of the ottoman S4, is formed of a material such as resin, which is higher in hardness than synthetic leather or cloth, as in the above embodiment. On the other hand, the front end surface 172 of the ottoman S4 has a large number of small protrusions similar to those of the above embodiment, and has a larger friction against the floor 4 than the protruding end surface of the projection 173 (a surface substantially parallel to the support surface 171). It is configured to have a coefficient. This projection is also formed on the front end face of both projecting parts 173, and the front end face of both projecting parts 173 is also configured to have a larger coefficient of friction with respect to floor 4 as compared with the projecting end face of projecting part 173. It is done.

  In the present 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. Is prevented. For example, while changing from the state of (E2) in the dive down operation of FIG. 15 (E) to the state of (E3), the front end face 172 of the ottoman S4 shown in (E2) Immediately after contact, when the support surface 171 of the ottoman S 4 contacts the lower portion 12 of the floor 4, the projecting portion 173 contacts the floor 4, not the central portion 174. Further, in the operation of changing the sheet 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 rise and the seat cushion S1 is pivoted by the seat base 26. When the restriction is removed, the support surface 171 of the ottoman S 4 may contact the lower portion 12 of the floor 4, but also in this case, the projecting portion 173 contacts the floor 4 instead of the central portion 174.

  As described above, even when the projecting portion 173 contacts the floor 4, the surfaces of the both projecting portions 173 are formed smoother than the central portion 174 of the support surface 171. Wear is suppressed. In addition, even when the protruding portion 173 gets dirty, it is easy to clean.

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

  Among the operations of the sheet S configured as described above, an operation of changing the sheet S from the use state to the dive-down state when the ottoman S4 of FIG. 15 (E) is at the temporary storage position; The operation for returning the sheet S in the dive down attitude 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 shown by the arrow. Then, as shown in (E2), the seat cushion S1 moves obliquely forward and downward, and the tip of the ottoman S4 abuts on the lower portion 12 of the floor 4. Subsequently, the seatback S2 is rotated forward and the seat cushion S1 is moved forward and downward so that a force obliquely upward and backward from the floor 4 is applied to the tip of the ottoman S4 and the holding by the detent mechanism 165 is released. As a result, the ottoman S4 pivots toward the storage position. 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 bringing the free end into sliding contact with the floor 4. Even in the dive-down state of the sheet S in which the seat back S2 is completely collapsed as shown in (E3), as shown in FIG. 22, the ottoman S4 has the free end in contact with the floor 4 and this rotational position is It will be in 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 posture in which the ottoman S4 is in the storage position to the use state, the occupant operates the steering wheel 68 and the seat back S2 is indicated by the arrow as shown in FIG. Rotate in the direction to wake up. At this time, since the lock by the tip-up mechanism 5 is not engaged, as shown in (C2), the seat cushion S1 does not rise with the seat back S2, but moves rearward so as to be dragged by the seat back S2. Further, since the ottoman S4 is held by the detent mechanism 165, it slides on the floor 4 while being located at the storage position. Thereafter, when the front end of the stand leg 37 engages with the wall 13 or the seat base 26 of the floor 4 and the occupant rotates the seat back S2 as it is as shown in (C3), the stand leg 37 As a result of being caught on the wall 13 or the seat base 26, the ottoman S4 separates from the floor 4, and the stand leg 37 moves to the use position.

  When the occupant further rotates the seat back S2, the stand leg 37 enters the support groove 35 of the stand base 34, and as shown in (C4), the seat back S2 is fixed in the use position and the seat cushion S1 is fixed at the sitting position. Also in this state, the ottoman S4 is held at the storage position by the holding force of the detent mechanism 165. When the occupant pulls the ottoman S4 in the state shown in (C4) in the direction of the arrow, the detent mechanism 165 releases the holding and the ottoman S4 rotates, and hangs from the front end of the seat cushion S1 as shown in (C5). It is held by the detent mechanism 165 in the storage position. When the ottoman S4 is not used, the occupant again applies a force to the ottoman S4 in the direction of the arrow from the state of (C5) to turn 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, when the dive-down operation of the sheet S is performed in the state where the ottoman S4 is in the temporary storage position described in (E) of FIG. 2 Rotate to the storage position. Therefore, the sheet S shown in (E2) to (E3), in which the ottoman S4 abuts on the floor 4 and rotates to the storage position on the bottom surface of the seat cushion S1, does not have the torsion coil spring 156. It is realized by the configuration. In the sheet S of the present modification, since the support surface 171 of the ottoman S4 is in sliding contact with the floor 4, it is preferable to use the ottoman S4 having the projecting portion 173 described in the above modification.

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

  Further, in the above embodiment, a reclining mechanism as a seat back angle adjusting mechanism capable of holding the seat back S2 at a desired angle in all the angle ranges in which the seat S can rotate as shown in FIG. Although the seat S includes the seat reclining mechanism 3, the seat back S2 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 concave portion 101 and the lock member 102 as a seat cushion angle adjustment mechanism capable of maintaining the angle of the seat cushion S1 with respect to the seat back S2 shown in FIG. The seat cushion angle adjustment mechanism may not be provided.

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

  For example, in the case where there is no interference with the front row sheet or the like, when the sheet S performs the dive down operation, it may be displaced upward and forward in the direction away from the floor 4, that is, the deployed position side. Such an operation involves, for example, an interlocking mechanism that displaces the ottoman S4 to the unfolded position side in conjunction with the rotation of the seatback S2, or interlocked with the angle change of the seat cushion S1 with respect to the seatback S2, and the ottoman S4 to unfolded position side This can be realized by an interlocking mechanism that displaces Alternatively, the sheet S may be provided with a motorized displacement means for displacing the ottoman S4, and a detection means for detecting that the ottoman S4 has approached or contacted the floor 4, and when the proximity or contact is detected by the detection means The displacement means may be configured to drive the ottoman S 4 in a direction away from the floor 4.

  Alternatively, when the ottoman S 4 abuts on the floor 4, an operation may be performed such that it rotates forward by the force received from the floor 4. In such a mode, for example, the storage position (temporary storage position) of the ottoman S4 hanging down from the front of the seat cushion S1 is set at an angle such that the lower portion is located forward with respect to the vertical direction. The lower end (free end) of the ottoman S4 first comes into contact with the floor 4 when the sheet S performs a dive-down operation in the position state, and the lower end of the ottoman S4 is a slope with low friction. Can be implemented by contacting the floor 4 at a shallow angle.

  In the above embodiment, although the torsion coil spring 156 is configured to apply the biasing force to the storage position side regardless of the rotation angle of the ottoman S4, for example, the temporary storage position or the vicinity thereof The biasing force may be received when the storage position side is more than the predetermined rotation angle.

  In the above embodiment, the projecting portion 173 of the ottoman S4 extends from the pivot shaft side of the ottoman S4 toward the free end side, but if it is formed at least on the free end side, the free end A form in which a single or a pair of projecting parts 173 are formed in the vicinity, a form in which a plurality of projecting parts 173 are separately formed along the free end side from the rotating shaft side, the rotating shaft side It is good also as a form etc. which are formed on the free end side. Furthermore, the front end surface 172 of the ottoman S4 may be configured to have a larger coefficient of friction with the floor 4 than the projecting portion 173 of the support surface 171 by forming it with a felt manufactured by a needle punch method or the like. .

  In addition, the specific configuration or arrangement of each member or portion, the number, the angle, the material, and the like can be appropriately changed without departing from the scope of the present invention. Further, not all of the components of the sheet S shown in the above embodiment are 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 face 173 protrusion 174 center S seat S1 seat cushion S2 seat back S4 ottoman

Claims (1)

The seat cushion includes a seat back pivotally attached to the seat base, and a seat cushion pivotally attached to the seat back, the seat cushion being responsive to an action of the seat back pivoting forward. A vehicle seat configured to perform a dive-down operation in which a seating position is displaced diagonally forward from the seating position to the floor,
The seat cushion is displaceable between a first storage position depending from the front of the seat cushion and a deployed position extending forward from the front of the seat cushion when the seat cushion is in the sitting position. And have an ottoman installed in
The vehicle seat according to claim 1, wherein the ottoman can take a second storage position that does not interfere with the floor when the dive-down operation is performed in the first storage position.

Images