JP6315986B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat mounted on an automobile or the like, and more particularly to a vehicle seat having an ottoman.

  2. Description of the Related Art A vehicle seat for automobiles is known in which an ottoman is detachably attached to the front portion of a seat cushion (for example, Patent Document 1). The ottoman has a pair of left and right ottoman pillars, and these ottoman pillars are attached to the seat cushion by being inserted into a pair of left and right cylindrical pillar support portions attached to the frame of the seat cushion. In such an ottoman mounting structure, the position of the ottoman relative to the seat cushion can be changed by changing the insertion length of the ottoman pillar relative to the pillar support portion.

JP 2002-119376 A

  However, in the ottoman support structure as described above, the pillar support portion needs to be attached to the frame of the seat cushion, and there is a problem that the thickness and size of the entire skeleton member including the pillar support portion and the frame are increased. In particular, when the pillar support portion is disposed so as to straddle the upper or lower portion of the frame, there is a problem that the skeleton member is thick in the vertical direction and the entire seat cushion is thick in the vertical direction.

  In view of the above background, an object of the present invention is to make a seat cushion compact in a vehicle seat in which an ottoman pillar is attached to the seat cushion.

  In order to solve the above problems, a vehicle seat (S) having a seat back (S2), a seat cushion (S1), and an ottoman (S4) attached to the seat cushion, The left and right cushion side frames (85) that extend along the left and right side portions of the seat cushion and are pivotally attached to the seat back at the base end portion, and the cushions that connect the front end portions of the cushion side frame to each other A cushion frame (F1) including a front member (86) and a rear cushion member (87) that couples the left and right cushion side frames on the rear side of the front cushion member; Having a recess (143) extending in the cylinder, and extending forward and backward in each of the recesses A pair of right and left pillars supporting portion (141) is entered bonding, the ottoman is characterized by having a pair of right and left ottoman pillars penetratingly inserted into the pillar support portion (135).

  According to this configuration, in the portion where the pillar support portion crosses the member in front of the cushion, the pillar support portion is fitted into the recess formed in the member in front of the cushion, and thus the size (thickness) in the vertical direction is reduced. Thereby, the thickness of a seat cushion becomes small.

  In the above invention, the recess may be provided in a lower portion of the cushion front member, and an upper portion of the pillar support portion may enter and be joined to each of the recesses.

  According to this configuration, since the pillar support portion crosses below the front cushion member, the occupant's leg seated on the seat is supported by the front cushion member via the seat cushion, and the occupant's leg is comfortably supported. If the pillar support portion is provided on the upper portion of the cushion front member, the occupant may feel unevenness due to the pillar support portion on the leg through the seat cushion, and feel uncomfortable.

  In the above invention, the cushion front member may be formed of a pipe having a circular cross section, and may have a flat surface in a portion where the concave portion is formed.

  According to this configuration, the pillar support portion can be easily joined to the recess.

  In the above invention, the concave portion may be formed in a shape complementary to the upper portion of the pillar support portion.

  According to this configuration, the concave portion and the upper portion of the pillar support portion are in close contact with each other, and the surface contact area can be increased, so that a wide welding allowance can be ensured. Thereby, the rigidity of the junction part of a pillar support part and a cushion front member is improved.

  In the above invention, the ottoman has a base member (130) that extends in the width direction and to which a base end portion of the ottoman pillar is joined, and when the seat cushion is in a seating position, the ottoman pillar Each base end portion of the base plate is curved downward and joined to the base member at a front side portion of a portion extending up and down.

  According to this structure, the contact area in the junction part of a base member and an ottoman pillar can be enlarged, and a welding allowance can be ensured widely. Thereby, the rigidity of the junction part of a base member and an ottoman pillar is improved. Further, since the ottoman pillar does not straddle the base member, contact between the occupant's leg and the ottoman pillar can be avoided when the occupant places his / her leg on the ottoman. Further, the vertical position of the base member (ottoman) relative to the seat cushion can be easily set by changing the curved shape of the front end portion of the ottoman pillar and the joining position of the base member to the front end portion of the ottoman pillar.

  In the above invention, the Ottoman pillar has a curved portion that protrudes upward when viewed from the left and right sides, and the lower the distance from the axis of the pillar support portion, the greater the distance to the axis.

  According to this configuration, the distal end portion of the ottoman pillar advances downward as it advances toward the distal end side, so that contact with the pad constituting the upper portion of the seat cushion can be avoided. Thereby, the passenger seated in the seat does not feel uncomfortable (for example, the presence of a foreign object in the seat cushion), and comfort is ensured.

  In the above invention, the Ottoman pillar has at least one locking groove (146) on its side, and the pillar support part is displaced in a direction perpendicular to the longitudinal direction of the Ottoman pillar. A locking member (147) that can be engaged with the locking groove is provided, and the operation portion (148) of the locking member may be disposed on the front end surface (125) of the seat cushion.

  According to this configuration, in the seat in which the ottoman pillar is supported so as to be able to advance and retreat with respect to the pillar support portion, the operation portion of the locking member is disposed on the front end surface of the seat cushion, so that a seated passenger can easily access the operation portion. Can be operated. Thus, the occupant can adjust the position of the ottoman with good operability.

  Further, in the above invention, the pillar support portion is inclined so that the axis thereof is parallel to the lower surface of the pad of the seat cushion or is moved downward as the rear surface of the pad of the seat cushion is advanced. Good.

  According to this configuration, the tip of the ottoman pillar supported by the pillar support portion has a greater distance from the lower surface of the pad as it advances toward the tip, so that even when the occupant is seated and the pad bends downward, the ottoman pillar And contact with the pad can be avoided. Thereby, the passenger seated on the seat does not feel uncomfortable, and comfort is ensured.

  Further, in the above invention, the base member is provided with a pad (138) for winding the outer periphery of the base member in the circumferential direction, and the pads engage with each other at both ends in the circumferential direction. (218), and the engaging portion may be disposed below or on the seat cushion side with respect to the base member.

  According to this configuration, since the pad is attached to the base member, the base member can support the occupant's legs with good comfort. Since the engagement portion of the pad is disposed below or on the seat cushion side with respect to the base member, contact with the occupant's leg placed on the ottoman is avoided, and comfort is not impaired. Further, since the engaging portion is disposed at a position that is difficult to be seen by the occupant, the ottoman's aesthetic appearance is not impaired.

  According to the above configuration, in the vehicle seat in which the ottoman pillar is attached to the seat cushion, the seat cushion can be made compact.

The perspective view of the vehicle seat which concerns on embodiment A perspective view of a seat frame of a vehicle seat Right side view of the seat frame of the vehicle seat Plan view of the seat base of a vehicle seat Plan view of a seat frame of a vehicle seat Rear view of vehicle seat frame The perspective view which looked at the vehicle seat from the front lower side Schematic cross section of stand base Schematic of reclining mechanism Schematic diagram of tip-up mechanism Exploded perspective view of ottoman Schematic of the ottoman angle adjustment mechanism Schematic of the Ottoman half-lock mechanism Operation explanatory diagram of vehicle seat Operation explanatory diagram of vehicle seat Sectional view showing the mounting structure of the ottoman pillar Sectional view showing the mounting structure of the ottoman pillar Sectional drawing which shows the positional relationship of a 1st holding member and an ottoman

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

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

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

  The seat cushion pad P1, the seat back pad P2, the headrest pad P3, and the ottoman pad P4 are respectively disposed on the seating surface side of the cushion frame F1, the backrest surface side of the back frame F2, the support surface side of the headrest frame F3, and the ottoman frame F4. Is attached and covered by the epidermis SK. Each pad P is formed of a cushioning material having elasticity such as polyurethane foam. Each skin SK is formed from synthetic leather, fabric, or the like. Covers made of a resin material are attached to the bottom surface side of the cushion frame F1, the back surface side of the back frame F2, and the back surface side of the ottoman frame F4, and the bottom surface, the back surface, and the back surface are defined by these cover members. It may be.

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

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

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

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

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

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

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

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

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

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

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

  The reclining mechanism 3 can maintain the rotation (tilt) angle of the right back side frame 46 with respect to the right slide member 21 at an arbitrary position. Further, the reclining mechanism 3 has a release lever 51 and makes it possible to change the rotation angle of the right back side frame 46 relative to the right slide member 21 when the release lever 51 is operated. Various known mechanisms can be applied to the reclining mechanism 3.

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

  In the reclining mechanism 3, the cam plate 55 is normally biased in one rotational direction by the torsion spring 57, the lock member 56 moves radially outward, and the external teeth 59 of the lock member 56 are moved to the upper plate 53. Engage with the internal teeth 61. As a result, the relative rotation of the lower plate 52 and the upper plate 53 via the lock member 56 is prohibited. That is, the reclining mechanism 3 is in a locked state in which the rotation of the upper plate 53 relative to the lower plate 52 is prohibited by the urging force of the torsion spring 57. When the release lever 51 rotates in the release direction due to the operation of the occupant, and the connecting shaft 54 and the cam plate 55 rotate in the other rotation direction against the biasing force of the torsion spring 57, the lock member 56 is moved. It moves radially inward, and the engagement between the external teeth 59 of the lock member 56 and the internal teeth 61 of the upper plate 53 is released. Thereby, relative rotation of the lower plate 52 and the upper plate 53 becomes possible. One end of a reclining cable 63 (FIGS. 3 and 7) as a force transmission means is locked to the release lever 51. The release lever 51 rotates in the release direction when the reclining cable 63 is pulled.

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

  The handle 68 has one end of a locking claw cable 43 with one end locked to the locking claw 41 (FIG. 8) and one end of a reclining cable 63 locked to the release lever 51 (FIG. 3). The other end is connected. The locking claw cable 43 and the reclining cable 63 are slidably held by a cylindrical outer tube. The locking claw outer tube 71 that holds the locking claw cable 43 will be described with reference mainly to FIG. 5 although a detailed layout drawing is omitted. One end is fixed to the stand base 34, and the right slide member 21, extends upward along the right side of the right back side frame 46 and the pipe frame 45, and the other end is fixed to the bracket 66. As shown in FIG. 3, the reclining outer tube 72 that holds the reclining cable 63 is fixed to the right side surface of the right back side frame 46, and is attached to the right side portions of the right back side frame 46 and the pipe frame 45. The other end is fixed to the bracket 66. The locking claw outer tube 71 and the reclining outer tube 72 are bound to the right side of the pipe frame 45 by a band or the like.

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

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

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

  A plurality of auxiliary frames 82 formed of metal bars are welded at appropriate positions of the pipe frame 45. The auxiliary frame 82 is hung between the left and right side parts, is arranged so as to project leftward from the left side part, and is arranged so as to project rightward from the right side part. Including things. The auxiliary frame 82 compensates for the gap in the pipe frame 45 and supports the seat back pad P2.

  2 and 5, the cushion frame F1 includes a pair of left and right cushion side frames 85 extending in the front-rear direction, a cushion front member 86 that connects the front ends of the left and right cushion side frames 85, and the left and right cushion side frames. 85, and a rear cushion member 87 for connecting the rear portions of the two. The left and right cushion side frames 85 are formed by pressing a metal plate or the like, and are bent and raised so that the main surface faces left and right and the edge protrudes outward in the left and right directions. The rear end portions of the left and right cushion side frames 85 are bent with respect to the front portion extending in the front-rear direction and extend obliquely rearward and upward. The rear cushion member 87 is provided at a bent portion of the left and right cushion side frames 85.

  The rear end portion of the left cushion side frame 85 is disposed so that the right side surface thereof is opposed to the upper portion of the left side surface of the left back side frame 46 and is rotatably attached to the left back side frame 46.

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

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

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

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

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

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

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

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

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

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

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

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

  The positions of the other end of the second tip-up cable 107 and the other end of the second tip-up outer tube 109 are the second tip-up as the seat back S2 tilts forward from the standing state with respect to the floor 4. The other end of the cable 107 is set so as to be separated from the other end of the second tip-up outer tube 109. As a result, the second tip-up cable 107 is pulled toward the other end as the seat back S2 tilts forward. When the seat back S2 tilts more than a predetermined angle, the cam member 103 (FIG. 10) Pulled by the tip-up cable 107 and positioned at the first position indicated by the solid line in FIG. 10, the lock member 102 is also positioned at the release position indicated by the solid line. That is, the first tip-up cable 106 and the first tip-up outer tube 108, and the second tip-up cable 107 and the second tip-up outer tube 109 are the tips for unlocking the tip-up mechanism 5, respectively. An uplock cancel mechanism 113 is configured.

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

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

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

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

  The 1st holding member 118 and the 2nd holding member 122 are straps containing a woven fabric, a string, a rope, etc., and have flexibility. In the present embodiment, the first gripping member 118 and the second gripping member 122 are formed in a loop shape by folding a band-shaped band. As shown in FIGS. 1 and 7, a passage (not shown) through which the first gripping member 118 penetrates forward and backward is formed in the front portion of the seat cushion pad P1 (FIG. 2), and the front end surface of the seat cushion pad P1 A grommet 127 that defines a hole through which the first gripping member 118 passes is attached to the 125 skins SK. Thereby, the front-end | tip part of the 1st holding member 118 passes the grommet 127, and protrudes from the front-end surface of seat cushion S1.

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

  As shown in FIGS. 2, 5, and 11, the ottoman frame F <b> 4 has a base member 130 that extends in the left and right directions, and a base end portion that is rotatably attached to the left end and the right end of the base member 130. It has a pair of left and right ottoman side frames 131 extending to the front ends, and a ottoman front member 132 extending left and right and connecting the front ends of the left and right ottoman side frames 131, and is formed in a rectangular frame shape. Between the base member 130 and the ottoman front member 132, a plurality of ottoman auxiliary members 134 for connecting the left and right ottoman side frames 131 are spanned. The base member 130 and the ottoman front member 132 are formed from metal pipes. The left and right ottoman side frames 131 are formed by press-molding a metal plate or the like, the main surfaces thereof face left and right, and the edges thereof are bent inward in the left and right direction. The base member 130 is provided with a pair of left and right ottoman pillars 135 spaced from each other on the left and right. The left and right ottoman pillars 135 are formed of solid metal rods, are spaced from each other in the left-right direction, and extend parallel to each other.

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

  As shown in FIG. 11, the cushion front member 86 is provided with a pair of left and right pillar support portions 141 that support the pair of ottoman pillars 135. The pillar support portion 141 is formed in a cylindrical shape having both ends of a square cross section open. The pillar support portion 141 includes a portion corresponding to a portion between the left cushion side frame 85 and the left edge of the center support member 91 in the cushion front member 86, and a portion between the right cushion side frame 85 and the right edge of the center support member 91. And a portion corresponding to. The pillar support portion 141 is disposed below the front cushion member 86 so that the axis extends in the front-rear direction. The upper portion of the pillar support portion 141 extends into the front-rear concave portion 143 formed in the lower portion of the front cushion member 86, and welding or the like is performed in the concave portion 143. Are joined by. A support 142 that is a resin-made cylindrical member is inserted into each pillar support portion 141. The left and right ottoman pillars 135 are inserted into the inner holes of the support 142 attached to the pillar support portion 141. Thereby, the ottoman frame F4 is attached to the cushion frame F1.

  A plurality of locking grooves 146 are formed on at least one side surface of the two ottoman pillars 135 at intervals in the longitudinal direction. In the present embodiment, a locking groove 146 is formed in the right ottoman pillar 135. As shown in FIG. 1, the front end portion of the support 142 is disposed on the outer surface of the skin SK of the seat cushion S1. Returning to FIG. 11, a locking member 147 is received at the front end of the support 142 so as to be displaceable. The locking member 147 is displaceable between a projecting position that enters the inner hole of the support 142 and a retracted position that is separated from the inner hole, and is biased to the projecting position by a biasing member (not shown). One end portion of the locking member 147 protrudes outward from the side portion of the front end portion of the support 142 to constitute an operation portion 148 that can be operated by the occupant. The occupant can displace the locking member 147 from the entry position to the retracted position by pushing the operation portion 148 into the support 142. The locking member 147 maintains the position of the ottoman pillar 135 relative to the support 142 by locking the locking groove 146 of the ottoman pillar 135.

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

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

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

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

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

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

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

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

  Next, in the same state as (A1) shown in (B1), when the handle 68 (FIG. 1) is operated to unlock the stand leg 37 and the reclining mechanism 3, the seat back S2 may be tilted forward. It becomes possible. In this state, the tip-up mechanism 5 cannot be locked, and the relative angle between the seat back S2 and the seat cushion S1 can be changed. When the seat back S2 is rotated forward, as shown in (B2), the stand leg 37 is detached from the support groove 35 (FIG. 8) of the stand base and moved forward. Further, by rotating the seat back S2 so as to fall forward, the stand leg 37 falls, and the seat S has the seat cushion S1, the seat back S2, and the ottoman S4 at the lower part of the floor 4 as shown in (B3). 12 is a dive down posture stored in 12. In this state, since the stand leg 37 is disposed at the storage position, the first tip-up cable 106 (FIG. 10) is loosened, but the seat back S2 is tilted forward by a predetermined angle or more. The fifth cam member 103 is pulled by the second tip-up cable 107, the lock member 102 is positioned at the release position, and the rotational position of the seat cushion S1 relative to the seat back S2 is not fixed.

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

  When returning the seat S in the dive down position to the use state, as shown in (C1), the occupant operates the handle 68 to unlock the reclining mechanism 3, and raises the seat back S2 as shown by an arrow. Turn to. At this time, since the tip-up mechanism 5 is not locked, as shown in (C2), the seat cushion S1 does not rise together with the seat back S2, moves rearward so as to be dragged by the seat back S2, and the stand leg 37 Is engaged with the wall 13 of the floor 4 or the seat base 26. As shown in (C3), when the occupant rotates the seat back S2 rearward as it is, the stand leg 37 is caught by the wall portion 13 or the seat base 26 of the floor 4 and moved to the use position. When the occupant further rotates the seat back S2 rearward, the lateral member 94 (FIG. 8) of the stand leg 37 enters the support groove 35 of the stand base 34 while pushing away the locking claw 41, and is shown in (C4). As described above, the seat back S2 is fixed to the use position and the seat cushion S1 is fixed to the seating position. Since the stand leg 37 is raised and the bottom surface of the seat cushion S1 is separated from the floor 4, the ottoman S4 does not engage with the wall portion 13 of the floor 4, and when the seat S is in the sitting state shown in (C4), The coil spring 156 is held in the storage position by the biasing force of the torsion coil spring 156 and the holding force of the detent mechanism 165.

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

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

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

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

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

(Detailed structure around Ottoman)
Hereinafter, the mounting structure of the ottoman S4 will be described in detail. As shown in FIGS. 2 and 11, the cushion front member 86 is formed of a metal pipe having a circular cross section. The cushion front member 86 includes, in the left-right direction, a lower portion corresponding to a portion between the left edge of the center support member 91 and the right edge of the left arm 93 of the stand leg 37, and the right edge of the center support member 91 and the stand leg 37. Recesses 143 extending in the front-rear direction are formed in the lower part of the corresponding part between the left arm of the right arm 93. The front and rear ends of the recess 143 reach the front and rear surfaces of the cushion front member 86. The pair of left and right recesses 143 are formed by recessing the lower part of the cushion front member 86 with a press or the like. As shown in FIGS. 11 and 17, the upper portion of the cushion front member 86 is formed on a circumferential surface. The cross section of the portion of the cushion front member 86 where the recess 143 is formed has a semicircular shape with the lower portion being flat. That is, the bottom of the recess 143 is formed in a plane.

  A pillar support portion 141 is joined to each recess 143. The pillar support part 141 is formed in a cylindrical shape having a square cross section with both ends opened. The pillar support portion 141 is disposed so that the upper portion of the intermediate portion in the longitudinal direction enters the recess 143. The pillar support portion 141 has an upper surface in surface contact with the bottom surface of the recess 143 and is joined to the cushion front member 86 by welding. Since the upper part of the pillar support part 141 and the concave part 143 are formed in complementary shapes, the upper part of the pillar support part 141 and the concave part 143 have a large contact area, and a large welding allowance can be secured. Specifically, the upper surface of the pillar support portion 141 and the bottom surface of the recess 143 are each formed as a flat surface, and a large area for surface contact is ensured. Moreover, since it was set as the structure which forms the recessed part 143 and pierces the upper part of the pillar support part 141, the height of a junction part can be suppressed and seat cushion S1 can be formed compactly.

  The left and right pillar support portions 141 protrude forward and backward from each recess 143 in parallel to each other. Moreover, as shown in FIG. 17, when viewed from the left and right sides, each pillar support portion 141 extends linearly with an inclination with respect to the horizontal plane so that the front end is disposed above the rear end. . Further, when viewed from the left and right sides, each pillar support portion 141 extends substantially parallel to the front portions of the left and right cushion side frames 85 that incline forward when the seat cushion S1 is in the seating position. When viewed from the left and right sides, each pillar support portion 141 is located above and below the lower surface of the seat cushion pad P1 supported by the center support member 91 and the left and right cushion side frames 85 when the seat cushion S1 is in the seating position. You may arrange | position so that it may incline so that a distance may be separated up and down, so that it progresses in parallel or back with respect to the corresponding part. With this arrangement, the front end (rear end) of the ottoman pillar 135 supported by the pillar support 141 is disposed away from the lower surface of the seat cushion pad P1, so that an occupant is seated on the seat cushion S1. Even when the seat cushion pad P1 bends downward, contact between the seat cushion pad P1 and the ottoman pillar 135 is avoided. Thereby, sitting comfort is not impaired.

  As shown in FIG. 11 and FIG. 16, the support 142 inserted into the pillar support portion 141 has irregularities on the outer surface, and is inserted into the pillar support portion 141 without rattling. The support 142 has a front end formed wider than the pillar support portion 141, contacts the front end surface of the pillar support portion 141, and a rear end portion protrudes rearward through the pillar support portion 141. The rear end portion of the support 142 is disposed between the front cushion member 86 and the front end of the arm 93 in the front-rear direction. Since the support 142 extends rearward of the arm and the support length of the ottoman pillar 135 increases as the longitudinal length increases, it is preferable that the support 142 is disposed longer in the range where it does not interfere with the arm 93, that is, the rear end is disposed rearward. A claw 203 is formed at the rear end portion of the support 142, and the support 142 is fixed to the pillar support portion 141 by engaging the claw 203 with the rear end surface of the pillar support portion 141. The inner hole 204 of the support 142 inserted into the pillar support portion 141 has a circular cross section, and the axis extends linearly. The axis of the inner hole 204 is arranged coaxially with the axis of the pillar support portion 141. The diameter of the inner hole 204 is slightly larger than the diameter of the ottoman pillar 135.

  A guide hole 205 extending in a direction orthogonal to the inner hole 204 is formed in the front end portion of the support 142. One end of the guide hole 205 opens to the outer surface of the support 142. The locking member 147 is a plate-like member having a through hole 207 formed in the center, and is inserted into the guide hole 205. The locking member 147 has, at one end thereof, an operation portion 148 that protrudes outward from the guide hole 205 and is disposed on the outer surface of the support 142. The locking member 147 is attached to the guide hole 205 so as to be displaceable in the insertion direction and the withdrawal direction, and the withdrawal is restricted at a predetermined position by a stopper (not shown). A compression coil spring 209 is provided between the locking member 147 and the support 142 as an urging means for urging the locking member 147 in the pull-out direction. As shown in FIGS. 7 and 17, the front end portion of the support 142 extends forward through a passage 210 formed so as to penetrate the seat cushion pad P <b> 1 and the skin SK, and the operation portion 148 of the locking member 147. Are arranged on the outer surface side of the skin SK, that is, on the front end surface 125 of the seat cushion S1. Thereby, the passenger | crew can operate the operation part 148 easily.

  As shown in FIG. 16, the diameter of the through hole 207 of the locking member 147 is larger than the diameter of the inner hole 204 of the support 142. Under normal conditions, the locking member 147 is biased by the compression coil spring 209, and the edge of the through hole 207 presses the side surface of the ottoman pillar 135. When the operating portion 148 of the locking member 147 is pushed against the urging force of the compression coil spring 209 by the occupant, the through hole 207 and the inner hole 204 are aligned, and the locking member 147 is separated from the side surface of the ottoman pillar 135 . That is, the locking member 147 releases the engagement with the ottoman pillar 135.

  A plurality of locking grooves 146 of the ottoman pillar 135 are formed at intervals in the longitudinal direction of the ottoman pillar 135. A locking groove 211 having a shape different from that of the locking groove 146 is formed in a portion closer to the distal end than the locking groove 146 disposed on the most distal side of the ottoman pillar 135. Each locking groove 146 extends by a predetermined length in the circumferential direction, and the side wall portion on the proximal end side and the side wall portion on the distal end side in the longitudinal direction of the ottoman pillar 135 are inclined surfaces 213. As a result, the locking groove 146 becomes wider on the proximal end side and the distal end side in the longitudinal direction of the ottoman pillar 135 as it proceeds from the bottom to the opening end side. The lock groove 211 extends by a predetermined length in the circumferential direction, and a shoulder surface 214 in which the side wall portion on the proximal end side and the side wall portion on the distal end side in the longitudinal direction of the ottoman pillar 135 are surfaces orthogonal to the longitudinal direction of the ottoman pillar 135. Is formed.

  The inner edge of the through hole 207 of the locking member 147 enters the locking groove 146 or the lock groove 211 according to the insertion length of the ottoman pillar 135 with respect to the pillar support portion 141 and engages with the locking groove 146 or the lock groove 211. To do. The insertion length of the ottoman pillar 135 with respect to the pillar support portion 141 is maintained by the engagement of the locking member 147 with the locking groove 146 or the lock groove 211. That is, the position of the ottoman S4 with respect to the seat cushion S1 is maintained. Since both ends of the locking groove 146 in the longitudinal direction of the ottoman pillar 135 are inclined surfaces 213, the locking groove 146 has a predetermined value in the insertion direction or the extraction direction with the locking member 147 engaged with the locking groove 146. When the above load is applied, the locking member 147 slides on the inclined surface 213 of the locking groove 146 and is detached from the locking groove 146, and the ottoman pillar 135 can be moved in the insertion direction or the extraction direction. . That is, the engagement of the locking groove 146 with the locking member 147 can hold the position of the ottoman pillar 135 with a predetermined load.

  On the other hand, since both ends of the lock groove 211 in the longitudinal direction of the ottoman pillar 135 are shoulder surfaces 214 orthogonal to the longitudinal direction of the ottoman pillar 135, the ottoman pillar 135 is engaged with the locking member 147 engaged with the lock groove 211. Even if a load is applied in the insertion direction or the extraction direction, the locking member 147 cannot be detached from the lock groove 211. By engaging the locking member 211 with the locking groove 211 provided on the distal end side of the ottoman pillar 135 with respect to each locking groove 146, the ottoman pillar 135 is prevented from being completely removed from the pillar support portion 141. . When the locking member 147 is engaged with the lock groove 211, the occupant pushes the operation portion 148 of the locking member 147 against the compression coil spring 209, thereby engaging the locking member 147 with the lock groove 211. The occupant can adjust the insertion length of the ottoman pillar 135, that is, the position of the ottoman S4. The front end portion (rear end portion) of the ottoman pillar 135 is set so that the front end portion (rear end portion) is always arranged in front of the end portion of the arm portion of the stand leg in the front-rear direction. preferable.

  As shown in FIGS. 11 and 17, the base end portion of the ottoman pillar 135 is curved at a substantially right angle downward while the seat cushion S1 is in the seating position. The base end portion of the ottoman pillar 135 is joined to the side surface of the base member 130 of the ottoman S4 by welding at the front side portion (the outer peripheral side portion of the bending portion) of the vertically extending portion. That is, the base end portion of the ottoman pillar 135 extends in the tangential direction of the base member 130 and is welded to the base member 130 with a predetermined length in the longitudinal direction of the ottoman pillar 135. The base member 130 may have a recess 143 corresponding to a side portion of the ottoman pillar 135 at a portion where the ottoman pillar 135 is welded. Since the ottoman pillar 135 has a circular cross section, the recess 143 may be formed in a semicircular concave surface, for example. The recess 143 may be formed by recessing the base member 130 with a press or the like.

  In FIG. 17, the storage position of the ottoman S4 is indicated by a broken line. The ottoman pillar 135 is disposed between the main body portion of the ottoman S4 and the cushion front member 86, which includes the ottoman front member 132, the ottoman auxiliary member 134, the ottoman pad P4, and the like when the ottoman S4 is in the storage position. . As shown in FIG. 17, the ottoman pillar 135 is curved so that other portions except the base end are convex upward. The ottoman pillar 135 is curved to such an extent that it can pass through the inner hole 204 extending linearly of the support 142. That is, since the diameter of the inner hole 204 is larger than the diameter of the ottoman pillar 135, the ottoman pillar 135 can pass through the inner hole 204 even if it is curved. In the inner hole 204, the front and rear end portions of the ottoman pillar 135 are in contact with the lower portion of the inner hole 204, and the intermediate portion in the front-rear direction is in contact with the upper surface of the inner hole 204. Thereby, the front-end | tip part (rear end part) of the ottoman pillar 135 is arrange | positioned below the axis line A of the inner hole 204 (pillar support part 141). The ottoman pillar 135 is displaced downward as it moves backward from the pillar support portion 141. Thereby, the distance from the lower surface of the seat cushion pad P <b> 1 supported by the cushion side frame 85 and the center support member 91 increases as the ottoman pillar 135 proceeds rearward from the pillar support portion 141. Thus, even when an occupant sits on the seat cushion S1 and the seat cushion pad P1 bends downward, the contact between the seat cushion pad P1 and the ottoman pillar 135 is avoided, and the sitting comfort is not impaired.

  As shown in FIG. 5, the left Ottoman pillar 135 extends back and forth between the left edge of the center support member 91 and the right edge of the left arm 93, and the right Ottoman pillar 135 includes the right edge and the right edge of the center support member 91. It extends back and forth between the right edge of the arm 93. The ottoman pillar 135 has a length that does not interfere with the lateral member 94 of the stand leg 37 when the insertion length is the longest with respect to the pillar support portion 141 and the support 142 (referred to as the maximum insertion state). Is formed. That is, the length of the ottoman pillar 135 is set so that the ottoman pillar 135 and the horizontal member 94 of the stand leg 37 in the most inserted state do not overlap each other when the stand leg 37 is in the storage position. Accordingly, the ottoman pillar 135 is arranged so as not to interfere with the stand leg 37 regardless of the storage position and the use position of the stand leg 37. Further, since the left and right ottoman pillars 135 are disposed at positions that overlap the left and right arms 93 in a wide range when viewed from the left and right when the stand leg 37 is in the storage position, the left and right ottoman pillars 135 are disposed in a compact manner in the thickness direction of the seat cushion S1. The

  As shown in FIGS. 17 and 18, a base member pad 138 is put on the base member 130 of the ottoman S4. The base member pad 138 has a notch 215 through which the base end portion of the ottoman pillar 135 can pass at a portion corresponding to the ottoman pillar 135, and is mounted so as to be wound around the base member 130 from the circumferential direction. The base member pad 138 has a skin 216 provided on the outer surface side thereof, and engaging portions 218 attached to both ends of the skin 216 in the circumferential direction. Each engaging portion 218 is a hook that can be engaged with each other, and the base member pad 138 is formed in a cylindrical shape and covers the base member 130 when the engaging portions 218 engage with each other. Both engaging portions 218 engaged with each other are disposed below the base member 130. In other embodiments, the engaging portions 218 may be disposed on the side (rear side) of the base member 130 facing the front end face 125 side of the seat cushion S1. In other words, the two engaging portions 218 are disposed in the vicinity of a position corresponding to a portion of the base member 130 where the base end portion of the ottoman pillar 135 is welded. As a result, the two engaging portions 218 that are the joint portions of the base member pads 138 are disposed at positions that are difficult to see from the occupant, and the aesthetic appearance is improved. Further, when the occupant puts his / her leg on the ottoman S4, contact between the joint portion (both engaging portions 218) of the base member pad 138 and the leg is avoided, and comfort is improved. In other embodiments, other engaging means such as a hook-and-loop fastener and a snap button may be applied to the engaging portion 218 instead of the hook.

  If the seat S according to the present embodiment is the seat S of the rear right seat of the automobile, a predetermined distance is provided on the left side of the portion where the front end portion of the left support 142 is disposed on the front end surface 125 of the seat cushion S1. The grommet 127 is connected to the epidermis SK. In addition, assuming that the seat is the rear left seat of the automobile, the grommet 127 may be disposed on the right side of the front end surface 125 of the seat cushion S1 where the front end portion of the right support 142 is disposed. The grommet 127 is used for the purpose of reinforcing the hole formed in the skin SK, and is joined to the edge of the hole formed in the skin SK at the peripheral edge, and has a through hole in the center. The grommet 127 constitutes a drawing hole through which the first gripping member 118 constituting the end of the operation member is drawn from the seat cushion S1. The grommet 127 may be a resin molded product. The seat cushion pad P1 has a passage 220 along a line segment that linearly connects the other end locked to the bracket 117 of the outer tube 114 for the first rail and the grommet 127. The passage 220 is formed as a through hole extending in the front-rear direction. The first gripping member 118 passes through the passage 220 formed in the seat cushion pad P1 and the through hole of the grommet 127, and the end portion extends to the outside of the seat cushion S1.

  As shown in FIG. 17, since the base end portion of each ottoman pillar 135 is curved downward and the base member 130 is joined to the base end portion, the base member 130 is lower than the front end portion of the support 142. Is arranged. Therefore, as shown in FIGS. 1 and 18, the grommet 127 is disposed above the base member 130 in the vertical direction. Therefore, the first holding member 118 extending to the outside of the seat cushion S1 can extend above the base member 130 to which the base member pad 138 is attached by extending in the horizontal direction. Thereby, the 1st holding member 118 can be mounted on the upper surface of ottoman S4.

  Since the base member 130 forms a rotation axis of the ottoman S4, the position is maintained even when the ottoman S4 is rotated to be in a deployed state. Therefore, the first gripping member 118 pulled out from the grommet 127 disposed above the base member 130 can extend above the ottoman S4 regardless of the deployed position of the ottoman S4.

  In the seat S according to the present embodiment, the size of the seat cushion S1 and the seat back S2, the seat back S2 so that the front end surface 125 of the seat cushion S1 is disposed above the upper surface of the seat back S2 at the tip-up position. The rotational position of the seat cushion S1 is determined. Since the front end face 125 of the seat cushion S1 is disposed above the upper surface of the seat back S2 at the tip-up position, the grommet 127 is also disposed above the upper surface of the seat back S2.

  The effect of the sheet S configured as described above will be described. In the present embodiment, the first gripping member 118 connected to the first rail cable 31 protrudes above the base member 130 of the ottoman S4 from the grommet 127 provided on the front end surface 125 of the seat cushion S1, The occupant can easily grip the operating member without being obstructed by the ottoman S4. Further, since the pulling operation of the operation member by the occupant can be performed at a position away from the ottoman S4, the ottoman S4 does not become an obstacle to the operation.

  The ottoman S4 is attached to the cushion front member 86 by the ottoman pillar 135, and the left and right ottoman side frames 131 and the ottoman pad P4 can rotate about the base member 130 as a rotation center. Since the grommet 127 is disposed above the base member 130, the first gripping member 118 can easily protrude above the ottoman S4 including the base member 130. Since the first holding member 118 can extend above the base member 130 serving as a rotation center, the first holding member 118 can extend above the ottoman S4 regardless of the rotation (deployed state) of the ottoman S4.

  Since the base member 130 is attached to the base end portion of the ottoman pillar 135 that curves downward, the base member 130 is disposed to be biased downward with respect to the front end surface 125 of the seat cushion S1. For this reason, the 1st holding member 118 can protrude easily above ottoman S4. Further, the grommet 127 can be disposed further down on the front end face 125 of the seat cushion S1.

  When the seat S according to the present embodiment is used as the rear right seat of the automobile, the first gripping member 118 is easy to operate from an occupant seated in the rear left seat, and from the occupant seated in the driver seat or the passenger seat. It becomes easy to operate. Further, since the occupant seated on the seat S according to the present embodiment gets on and off through the right entrance, the first gripping member 118 located on the left side of the occupant does not prevent the occupant from getting on and off. Further, the first gripping member 118 is prevented from being unintentionally caught by the occupant, and an unintended operation is prevented.

  The ottoman pillar 135 passes through the front end surface 125 of the seat cushion S1 and is supported by the cushion member, and the grommet 127 is disposed between the ottoman pillar 135 (pillar support portion 141) and the cushion side frame 85 in the left-right direction. Therefore, the first rail cable 31 and the first gripping member 118 are disposed so as to pass between the ottoman pillar 135 and the cushion side frame 85, and the seat cushion S1 can be made compact.

  Since the first gripping member 118 passes under the cushion front member 86, the load of the occupant seated on the seat is prevented from being applied to the first gripping member 118, and damage to the first gripping member 118 is prevented. Further, the first gripping member 118 is not sandwiched between the cushion front member 86 and the seat cushion pad P1 due to the load of the occupant, and the operation of the first gripping member 118 becomes smooth.

  Since the grommet 127 is above the seat back S2 when the seat cushion S1 is in the tip-up position, the occupant can easily grip and operate the first grip member 118 from the rear of the seat S. As a result, an occupant in the luggage compartment behind the seat S can seat the seat S with the seat cushion S1 in the tip-up position, and can slide the seat S back and forth while holding the first gripping member 118.

  Since the 1st holding member 118 is formed in the strip | belt-shaped member which has flexibility, it can protrude easily toward the upper direction of ottoman S4 avoiding ottoman S4. Moreover, since the 1st holding member 118 can be along the upper surface of ottoman S4, it is supported by ottoman S4 with sufficient stability. Further, when the occupant puts his / her leg on the ottoman S4 and the first gripping member 118 is sandwiched between the occupant's leg and the ottoman, the occupant is uncomfortable because the first gripping member 118 has a flat belt shape. It's hard to feel.

  In this embodiment, since the grommet 127 is provided on the front end surface 125 of the seat cushion S1 and the first gripping member 118 is passed through the grommet 127, the first gripping member 118 can be bent at the edge of the through hole of the grommet 127. . Therefore, the occupant can pull the first gripping member 118 in a direction different from the direction in which the first gripping member 118 extends in the seat cushion S1. Thereby, the angle range in which the first gripping member 118 can be pulled is increased, and the operability of the first gripping member 118 is improved.

  In the present embodiment, since the pair of left and right ottoman pillars 135 are disposed between the center support member 91 and the corresponding arm 93 in the left-right direction, the thickness (length in the up-down direction) of the seat cushion S1 is reduced. Can do. Thereby, the ottoman pillar 135 and the stand leg 37 are arranged compactly while avoiding interference with each other.

  In the part where the pillar support part 141 crosses the lower part of the cushion front member 86, the pillar support part 141 is fitted into the recess 143 formed in the cushion front member 86, so that the dimension (thickness) in the vertical direction is reduced. Thereby, the thickness of seat cushion S1 becomes small. Further, since the upper portion of the cushion front member 86 is maintained on the circumferential surface even in the portion where the recess 143 is formed, high rigidity can be secured and it is difficult to give a sense of incongruity to the legs of the passenger sitting on the seat S. .

  Further, by making the bottom surface of the concave portion 143 flat and making the upper portion of the pillar support portion 141 flat, and making them complementary to each other, the concave portion 143 and the upper portion of the pillar support portion 141 are in close contact with each other and are in surface contact with each other. Therefore, it is possible to secure a wide welding allowance. Thereby, the rigidity of the junction part of the pillar support part 141 and the cushion front member 86 is improved.

  The base end portion of the ottoman pillar 135 is curved downward as it goes to the base end side, and is joined to the base member 130 at the front side portion of the portion extending up and down. As a result, the contact area at the joint between the base member 130 and the ottoman pillar 135 can be increased to ensure a large welding allowance, and the rigidity of the joint between the base member 130 and the ottoman pillar 135 can be increased. Further, since the ottoman pillar 135 does not straddle the base member 130, contact between the occupant's leg and the ottoman pillar 135 can be avoided when the occupant places his / her leg on the ottoman S4. Further, by changing the curved shape of the front end portion of the ottoman pillar 135 and the joining position of the base member 130 with respect to the front end portion of the ottoman pillar 135, the vertical position of the base member 130 (ottoman S4) with respect to the seat cushion S1 can be easily made. Can be set.

  Since the distal end portion of the ottoman pillar 135 proceeds downward as it proceeds toward the distal end side (backward), contact with the lower surface of the seat cushion pad P1 of the seat cushion S1 can be avoided. Further, since the pillar support portion 141 is inclined such that its axis is parallel to the lower surface of the seat cushion pad P1 or goes downward as it moves rearward from the lower surface of the seat cushion pad P1, the pillar support portion 141 is supported by the pillar support portion 141. The distance between the ottoman pillar 135 and the seat cushion pad P1 increases as the distance from the lower surface of the seat cushion pad P1 increases toward the distal end and the occupant is seated and the pad bends downward. Contact can be avoided. Thereby, the passenger seated on the seat does not feel a sense of discomfort (for example, the presence of a foreign object in the seat cushion S1), and comfort is ensured.

  In the seat S in which the ottoman pillar 135 is supported so as to be able to advance and retreat relative to the pillar support portion 141, the operation portion 148 of the locking member 147 is disposed on the front end surface 125 of the seat cushion S1, so that the seated occupant can operate the operation portion 148. Can be operated easily. Thereby, the passenger | crew can perform position adjustment of ottoman S4 with sufficient operativity.

  Since the base member pad 138 is attached to the base member 130, the base member 130 can support the occupant's legs with good comfort. Since the engaging portion 218 of the base member pad 138 is disposed below or on the side of the seat cushion S1 with respect to the base member 130, contact with an occupant's leg placed on the ottoman S4 is avoided, and comfort is impaired. can not become. Moreover, since the engaging part 218 is arrange | positioned in the position which is hard to see from a passenger | crew, the beauty | look of ottoman S4 is not impaired.

  Although the description of the specific embodiment is finished as described above, the present invention is not limited to the above embodiment and can be widely modified. For example, the first holding member 118 as the operation member may extend not only above the ottoman S4 but also forward through the left-right direction of the ottoman S4. When the ottoman S4 is smaller than the seat cushion S1 in the left-right direction, a portion not covered with the ottoman S4 is formed on the left or right end portion of the front end surface 125 of the seat cushion S1 when viewed from the front. You may provide the grommet 127 in the part which is not covered with this ottoman S4. In the above embodiment, the recess 143 is formed in the lower part of the cushion front member 86. However, in another embodiment, the recess 143 is formed in the upper part of the cushion front member 86, and the pillar support part 141 is provided on the cushion front member 86. You may arrange | position so that an upper side may be straddled back and forth.

  S ... Seat, S1 ... Seat cushion, S2 ... Seat back, S3 ... Headrest, S4 ... Ottoman, F ... Seat frame, F1 ... Cushion frame, F2 ... Back frame, F3 ... Headrest frame, F4 ... Ottoman frame, P ... Pad , P1 ... Seat cushion pad, P2 ... Seat back pad, P3 ... Headrest pad, P4 ... Ottoman pad, SK ... Epidermis, 2 ... Slide mechanism, 3 ... Reclining mechanism, 4 ... Floor, 5 ... Tip-up mechanism, 6 ... Angle Adjustment mechanism, 17 ... Rail lock member, 26 ... Seat base, 28 ... Link mechanism, 31 ... Cable for first rail, 34 ... Stand base, 37 ... Stand leg, 45 ... Pipe frame, 46 ... Back side frame, 63 ... Reclining cable, 68 ... handle 85 ... Cushion side frame, 86 ... Cushion front member, 87 ... Cushion rear member, 91 ... Center support member, 93 ... Arm, 94 ... Horizontal member, 118 ... First grip member, 125 ... Front end face, 127 ... Grommet, 130 ... Base member, 131 ... Right ottoman side frame, 132 ... Ottoman front member, 134 ... Ottoman auxiliary member, 135 ... Ottoman pillar (connection member), 138 ... Base member pad, 141 ... Pillar support part, 142 ... Support, 143 ... Recessed portion, 146 ... locking groove, 147 ... locking member, 148 ... operating portion, 204 ... inner hole, 205 ... guide hole, 207 ... through hole, 210 ... passage, 215 ... notch, 216 ... skin, 218 ... engagement Joint part, 220 ... passage, A ... axis of inner hole (pillar support part)

Claims (10)

A vehicle seat having a seat back, a seat cushion, and an ottoman attached to the seat cushion,
The seat cushion extends along the left and right side portions of the seat cushion, and joins the left and right cushion side frames rotatably attached to the seat back at the base end portion and the front end portions of the cushion side frame. A front cushion member, a rear cushion member that joins the left and right cushion side frames on the rear side of the front cushion member, and a front-rear cushion member that extends in the front-rear direction and spans the center of the front cushion member and the rear cushion member in the left-right direction. A cushion frame including a center support member formed;
The cushion front member has a pair of left and right recesses extending in the front-rear direction in a portion corresponding between the center support member and the left and right cushion side frames ,
A pair of cylindrical left and right pillar support portions extending in the front-rear direction are inserted into and joined to each of the recesses,
The ottoman has a pair of left and right ottoman pillars that are inserted through the pillar support portion. 2. The vehicle seat according to claim 1, wherein each of the recesses is provided in a portion closer to the left and right cushion side frames than the center support member in the cushion front member. 3. The vehicle seat according to claim 1, wherein a width of each of the pillar support portions in the left-right direction is smaller than a width of the center support member in the left-right direction. A front end of the center support member is coupled to an upper portion of the cushion front member;
The vehicle seat according to any one of claims 1 to 3, wherein the recess is provided in a lower portion of the cushion front member. The vehicle seat according to any one of claims 1 to 4, wherein a front end of the pillar support portion is positioned forward of a front end of the center support member. The recess is provided in a lower portion of the cushion front member;
The vehicle seat according to any one of claims 1 to 5 , wherein an upper portion of the pillar support portion enters and is joined to each of the recesses. The vehicle seat according to any one of claims 1 to 6, wherein the cushion front member is formed of a pipe having a circular cross section, and has a flat surface in a portion where the concave portion is formed. The vehicle seat according to claim 6 or 7 , wherein the concave portion is formed in a shape complementary to an upper portion of the pillar support portion. A vehicle seat having a seat back, a seat cushion, and an ottoman attached to the seat cushion,
The seat cushion extends along the left and right side portions of the seat cushion, and joins the left and right cushion side frames rotatably attached to the seat back at the base end portion and the front end portions of the cushion side frame. A cushion frame including a cushion front member and a cushion rear member that couples the left and right cushion side frames on the rear side of the cushion front member;
The cushion front member has a recess extending in the front-rear direction,
A pair of cylindrical left and right pillar support portions extending in the front-rear direction are inserted into and joined to each of the recesses,
The ottoman has a pair of left and right ottoman pillars penetratingly inserted into the pillar support portion, and a base member having a base end portion of the ottoman pillars are joined to extend in the width direction,
When the seat cushion is in the seating position, each base end portion of the ottoman pillar is bent downward and joined to the base member at a front side portion of a portion extending up and down. It is that power of products for the seat. The base member is provided with a pad for winding the outer periphery of the base member in the circumferential direction,
The pad has engaging portions that engage with each other at both ends in the circumferential direction,
The vehicle seat according to claim 9 , wherein the engaging portion is disposed below or on the seat cushion side with respect to the base member.

Images