JP2013112128A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a vehicle seat that can restrain an ottoman from being a hindrance in a tip-up state of a seat cushion.SOLUTION: In the vehicle seat 10, a link member 104 serving as a component member for an interlocking mechanism 100 is laid between a base part 16 for supporting the seat cushion 12 and the ottoman 18, and the ottoman 18 is rotated to the undersurface side of the seat cushion in such a manner as to interlock with a tip-up motion of the seat cushion 12. This can restrain the ottoman from being the hindrance in the tip-up state of the seat cushion. Additionally, since the tip-up motion of the seat cushion and the rotation of the ottoman interlock with each other, operability is good.

Description

  The present invention relates to a vehicle seat equipped with a tip-up mechanism and an ottoman.

  Japanese Patent Application Laid-Open No. H10-228667 discloses a chip-up seat for an automobile in which a seat cushion can be flipped up (chip-up) toward a seat back.

  Patent Document 2 below discloses an automobile seat in which a front seat portion of a seat cushion can be used as an ottoman-style footrest.

JP-A-2005-74051 JP 2003-237450 A

  By the way, in the vehicle seat provided with both the tip-up mechanism and the ottoman, it is conceivable that the ottoman becomes an obstacle in the tip-up state in which the seat cushion is flipped up toward the seat back.

  An object of the present invention is to obtain a vehicle seat that can prevent the ottoman from getting in the way in the tip-up state of the seat cushion in consideration of the above facts.

  According to a first aspect of the present invention, there is provided a vehicle seat including a base portion supported by a vehicle body floor portion, a seat cushion capable of tip-up around a rear end side connected to the base portion, and the seat. An ottoman that is rotatable back and forth around the upper end side connected to the front end side of the cushion, and a link member that spans between the base portion and the ottoman. An interlocking mechanism for interlockingly rotating the ottoman toward the rear end side of the seat cushion.

  In the vehicle seat according to claim 1, the link member of the interlocking mechanism is stretched between the base portion that supports the seat cushion and the ottoman, and when the seat cushion is tipped up, the front end side of the seat cushion The ottoman having the upper end connected to the rear is rotated to the rear end side (lower surface side) of the seat cushion. Thereby, it can suppress that an ottoman becomes obstructive in the state where the seat cushion is chipped up. Moreover, since the seat cushion tip-up and the rotation of the ottoman are linked, the operability is good.

  A vehicle seat according to a second aspect of the present invention is the vehicle seat according to the first aspect, wherein the ottoman is extended from an ottoman main body for supporting a lower leg portion of an occupant, and the seat cushion is An ottoman bracket that is rotatably connected to a front end portion of a seat cushion frame that is provided, and is urged toward the rear end side of the seat cushion by an urging member provided in the interlocking mechanism, and the ottoman body is located in front of the seat cushion A lock mechanism that holds the ottoman bracket in a state of extending to the side, and is provided so as to be rotatable within a predetermined range with respect to the ottoman bracket, and the link member is connected and rotated when the seat cushion is tipped up, thereby locking the lock Ottoman side link that engages the mechanism and releases the hold And, the has.

  In the vehicle seat according to the second aspect, the lock mechanism holds the ottoman bracket in a state where the ottoman body connected to the front end portion of the seat cushion frame via the ottoman bracket extends to the front side of the seat cushion. This allows the ottoman to be used. When the seat cushion is tipped up in this state, the ottoman side link member to which the link member of the interlocking mechanism is connected is rotated. Thereby, the ottoman side link member is engaged with the lock mechanism, and the holding of the ottoman bracket by the lock mechanism is released. As a result, the ottoman bracket, that is, the ottoman main body is rotated to the rear end side (lower surface side) of the seat cushion by the urging force of the urging member. As described above, in the present invention, even when the ottoman is in a usable position, the ottoman can be rotated to the rear end side of the seat cushion in conjunction with the tip up of the seat cushion. Can be further improved.

  A vehicle seat according to a third aspect of the present invention is the vehicle seat according to the second aspect, wherein the locking mechanism is attached to a front end portion of the seat cushion frame and has teeth formed on the ottoman bracket. The engaging position of the ottoman bracket with respect to the seat cushion frame can be adjusted in a plurality of stages by having a meshing latch, and the meshing position of the teeth with the latch can be changed. The link member is provided with an engaging portion that engages with the latch and releases the engagement when the seat cushion is tipped up.

  In the vehicle seat according to the third aspect, the latch attached to the front end portion of the seat cushion frame meshes with the teeth formed on the ottoman bracket of the ottoman. Accordingly, the ottoman bracket is held in a state where the ottoman body extends toward the front side of the seat cushion. The above-mentioned latch can change the meshing position with the teeth of the ottoman bracket, and thereby, the holding position of the ottoman bracket with respect to the seat cushion frame, that is, the adjustment position of the ottoman body with respect to the seat cushion can be adjusted in a plurality of stages. It is said that. Therefore, the comfort of the occupant when using the ottoman can be improved. On the other hand, when the seat cushion is tipped up, the ottoman side link member connected to the link member of the interlocking mechanism is rotated, and the engaging portion provided in the ottoman side link member is engaged with the latch. Thereby, since the meshing state of the latch with the teeth of the ottoman bracket is released, the holding of the ottoman bracket by the latch can be released with a simple configuration.

  As described above, in the vehicle seat according to the present invention, it is possible to prevent the ottoman from getting in the way in the tip-up state of the seat cushion.

It is a perspective view showing composition of a vehicular seat concerning an embodiment of the present invention. It is a perspective view corresponding to Drawing 1 showing the state where an ottoman developed. FIG. 2 is a perspective view corresponding to FIG. 1 showing a state in which the seat cushion is tipped up and the ottoman is stored. It is a perspective view which shows the structure of the principal part of the seat cushion frame and ottoman which are the structural members of the vehicle seat shown by FIG. It is a perspective view which expands and shows a part of structure shown by FIG. 4 from a different angle. FIG. 5 is an exploded perspective view showing a part of the configuration shown in FIG. 4 in an exploded state. It is a side view which shows the state in which the ottoman bracket of the vehicle seat was locked by the latch. FIG. 8 is a side view corresponding to FIG. 7 for explaining a situation when the lock of the ottoman bracket by the latch is released. FIG. 8 is a side view corresponding to FIG. 7 for explaining a situation when the unlocked ottoman bracket is returned to the normal storage position. FIG. 8 is a side view corresponding to FIG. 7 showing a state in which the seat cushion frame is tipped up and the ottoman bracket is rotated to the storage position. FIG. 8 is a side view corresponding to FIG. 7 for explaining a situation when the ottoman bracket is returned from the storage position to the normal use position. FIG. 8 is a side view corresponding to FIG. 7 for explaining a situation when the ottoman bracket locked by the latch is unlocked by rotation of the ottoman side link member.

  Hereinafter, the vehicle seat 10 according to an embodiment of the present invention will be described with reference to FIGS. In the figure, the arrow FR indicates the front of the vehicle, the arrow UP indicates the upper side of the vehicle, and the arrow OUT indicates the outer side in the vehicle width direction.

<Configuration>
As shown in FIGS. 1 to 3, the vehicle seat 10 according to the present embodiment is a tip-up type in which the seat cushion 12 (seat portion) can be flipped up toward the seat back 14 (backrest portion). The vehicle seat is provided with a base portion 16 supported by a vehicle body floor portion (not shown) and an ottoman 18 connected to the front end side of the seat cushion 12. The base portion 16 includes a lower frame 20 (see FIG. 1), side covers 22 provided on the left and right sides of the lower frame 20, and a front cover 24 provided on the front side of the lower frame 20.

  The lower end portion of the lower frame 20 is connected to a vehicle body floor portion (both not shown) via a pair of left and right slide rails constituting a front and rear slide mechanism, and the lower frame 20 is moved back and forth with respect to the vehicle body floor portion. It is possible to slide. A lower end portion of a seat back frame (not shown) constituting the skeleton of the seat back 14 is connected to the lower frame 20 via a known reclining mechanism 26.

  Further, a rear end side of a seat cushion frame 28 (see FIGS. 3 to 6) constituting the skeleton of the seat cushion 12 is connected to the lower frame 20 via a known tip-up mechanism 30. As shown in FIG. 4, the seat cushion frame 28 includes a frame main body 32 made of a pipe material bent into a substantially U shape. The frame main body 32 includes left and right side portions 32A and a front portion 32B that connects the front end portions of the left and right side portions 32A along the seat width direction.

  A pair of left and right connecting portions 34 for connecting the ottoman 18 are joined to the front portion 32B. These connecting portions 34 are formed of a sheet metal material, and are arranged side by side in the seat width direction with the plate thickness direction being along the seat width direction, from the front portion 32 </ b> B toward the front side of the seat cushion 12. It protrudes. In addition, a wire frame 36 (see FIGS. 5 and 6; not shown in FIG. 4) formed in a lattice shape by a plurality of wires is joined to the frame body 32, as shown in FIG. A pad (not shown) covered by the skin 38 is attached.

  The rear end sides of the left and right side portions 32A of the frame main body 32 are connected to the lower frame 20 via a hinge portion (not shown) provided in the tip-up mechanism 30. As a result, the seat cushion frame 28 is connected to the lower frame 20 so as to be rotatable about an axis S1 (see FIG. 4) along the seat width direction, and the seat cushion 12 is normally connected as shown in FIGS. It can be rotated with respect to the base portion 16 between the position and the tip-up position shown in FIG.

  Further, as shown in FIG. 1, the tip-up mechanism 30 described above includes a lock mechanism 42 that restrains the seat cushion 12 in a normal position, and a tip-up lever 48 that is coupled to the lock mechanism 42 via a cable 46. It has. When the tip-up lever 48 is operated, the restraint by the lock mechanism 42 is released, and the seat cushion 12 is flipped up to the tip-up position shown in FIG. 3 by a biasing force of a spring (not shown). Yes.

  On the other hand, the ottoman 18 is a manual ottoman that employs a ratchet mechanism, and includes an ottoman body 50 for supporting the lower leg of the seated occupant. The ottoman body 50 has a frame 52 (see FIG. 6) formed in a long square tray shape (shallow box shape) using a sheet metal material or the like. The frame 52 is arranged with its longitudinal direction along the sheet width direction, and a pad (not shown) covered with an outer skin 54 (see FIGS. 1 to 3) is attached to the surface side of the frame 52. Yes.

  On the back side of the frame 52, a pair of left and right ottoman brackets 56 (see FIGS. 4 to 6) are arranged. The left and right ottoman brackets 56 are formed of a sheet metal material or the like, and have an arm portion 56A formed in a substantially square shape (substantially L shape) when viewed from the sheet width direction, and one end in the longitudinal direction of the arm portion 56A. And a fixing portion 56 </ b> B extending outward in the sheet width direction from the portion (lower end portion). A pair of upper and lower bolts 58 (see FIG. 6) are fixed to the back surfaces of both ends in the longitudinal direction of the frame 52 corresponding to the fixing portions 56B of the left and right ottoman brackets 56. These bolts 58 are inserted into a pair of upper and lower through holes 60 formed in the fixing portion 56 </ b> B and screwed into the nut 62. Thereby, each ottoman bracket 56 is fixed to the back surface of the frame 52 in a state where the arm portion 56 </ b> A of each ottoman bracket 56 extends to the upper side of the ottoman main body 50. In this embodiment, the ottoman bracket 56 is fixed to the frame 52 formed separately from the frame 52. However, the configuration is not limited to this, and the ottoman bracket 56 and the frame 52 are integrally formed. May be.

  As shown in FIG. 6, a bearing portion 56 </ b> C formed in a circular shape when viewed from the sheet width direction is provided at the other end portion in the longitudinal direction of the arm portion 56 </ b> A. A circular through hole 64 is formed at the center of the bearing portion 56 </ b> C, and a stepped bolt 66 is inserted through the through hole 64. This stepped bolt 66 is inserted from a circular through-hole 68 formed in the connecting portion 34 of the seat cushion frame 28 from the inside in the seat width direction, and a nut 70 ( 4 and 5). Accordingly, the other end in the longitudinal direction of the ottoman bracket 56 is coupled to the coupling portion 34 so as to be rotatable around the stepped bolt 66 (around the axis along the seat width direction), and the ottoman 18 is connected to the front end side of the seat cushion 12. It is possible to rotate back and forth around the upper end side connected to. The connecting portion 34 is provided with a cylindrical collar 72 that extends inward in the sheet width direction from the hole edge portion of the through hole 68, and the tip of the collar 72 is in contact with the arm portion 56A.

  Above the collar 72, the connecting portion 34 is provided with a support shaft portion 74 that constitutes a part of the lock mechanism 75. The support shaft portion 74 is formed in a stepped columnar shape and protrudes inward in the sheet width direction from the connecting portion 34. A latch 76 that is a constituent member of the lock mechanism 75 is attached to the support shaft portion 74. The latch 76 is curved in an arc shape when viewed from the sheet width direction, and a small diameter portion 74A of the support shaft portion 74 is inserted into a circular through hole 78 formed at the center in the bending direction. Thereby, the latch 76 is supported by the connecting portion 34 via the support shaft portion 74. Further, a male screw is formed on the distal end side of the small diameter portion 74A, and the nut 76 is screwed into the male screw, so that the latch 76 is prevented from falling off from the support shaft portion 74. A convex portion 76A and a concave portion 76B are formed on the upper surface of the latch 76 on one end side in the bending direction, and a convex portion 76C is formed on the lower surface of the one end portion in the bending direction of the latch 76. Further, ratchet teeth 76D and a stepped portion 76E are formed on the lower surface of the latch 76 on the other end side in the bending direction.

  The above-described latch 76 has a support shaft portion between a lock position where the ratchet teeth 76D are in contact with the outer peripheral surface of the bearing portion 56C of the ottoman bracket 56 and an unlock position where the ratchet teeth 76D are separated from the outer peripheral surface of the bearing portion 56C. It can be rotated around 74. A latch spring 82 is stretched between the latch 76 and the connecting portion 34. The latch spring 82 urges the latch 76 to the lock position when the latch 76 is located closer to the lock position than the center position between the lock position and the unlock position, and the latch 76 is moved from the center position. In the state of being located on the unlock position side, the latch 76 is biased to the unlock position.

  Ratchet teeth 56D that can mesh with the ratchet teeth 76D are formed on the outer peripheral surface of the bearing portion 56C corresponding to the ratchet teeth 76D described above. The ratchet teeth 56D are located when the ottoman bracket 56 is positioned within a predetermined angle range with respect to the connecting portion 34 (between the position shown by a solid line in FIG. 7 and the position shown by a two-dot chain line in FIG. 8). The ratchet teeth 76D are formed to face each other. Therefore, when the ottoman bracket 56 is rotated within the above-mentioned angular range in a state where the latch 76 is located at the lock position, the ratchet teeth 76D of the latch 76 are engaged with the ratchet teeth 56D of the ottoman bracket 56. In this engaged state, the shapes of the ratchet teeth 76D and 56D are set so that the rotation of the ottoman bracket 56 to the lower side is restricted and the rotation of the ottoman bracket 56 to the upper side is allowed. Yes. Further, within the above angle range, the meshing position of the ratchet teeth 56D with respect to the ratchet teeth 76D can be changed to a plurality of stages.

  In the above-described meshing state, as shown in FIG. 2, the ottoman bracket 56 is held by the latch 76 in a state where the ottoman 18 extends to the front side of the seat cushion 12 (hereinafter referred to as a deployed state). As a result, the lower leg of the occupant seated on the seat cushion 12 can be supported by the ottoman 18. Further, since the meshing position of the ratchet teeth 56D with respect to the ratchet teeth 76D can be changed to a plurality of stages as described above, the adjustment position (inclination angle) of the ottoman 18 with respect to the seat cushion 12 can be adjusted to a plurality of stages. (See arrow A in FIG. 2).

  Further, as shown in FIG. 6, a convex portion 56 </ b> E is formed on one side of the ratchet teeth 56 </ b> D in the bearing portion 56 </ b> C of the ottoman bracket 56. This convex portion 56E is formed in the step of the latch 76 when the ottoman bracket 56 is rotated from the position indicated by the two-dot chain line in FIG. 8 to the position indicated by the solid line in FIG. Hit the part 76E. As a result, the latch 76 is flipped up from the locked position to the unlocked position, and the above-described rotation restriction of the ottoman bracket 56 by the latch 76 is released. Further, the convex portion 56E is formed when the ottoman bracket 56 is rotated from the position indicated by the two-dot chain line in FIG. 9 to the position indicated by the solid line in FIG. 9 with the latch 76 positioned at the unlock position. It hits the convex portion 76C of the latch 76. As a result, the latch 76 is rotated from the unlock position to the lock position. At this time, the ottoman bracket 56 is rotated to a position where the ratchet teeth 56D of the bearing portion 56C do not face the ratchet teeth 76D of the latch 76, and the rotation of the ottoman bracket 56 is not restricted by the latch 76. Yes.

  On the other hand, as shown in FIGS. 4 and 5, ottoman side link members 86 are respectively provided on the inner sides in the seat width direction of the left and right ottoman brackets 56. The ottoman side link member 86 is formed in a long shape by a sheet metal material, and a circular through hole 88 (see FIG. 6) is formed at one end in the longitudinal direction. A ring-shaped bush 90 is fitted in the through-hole 88, and the stepped bolt 66 described above is inserted inside the bush 90. Accordingly, the ottoman side link member 86 is supported by the connecting portion 34 so as to be rotatable around the stepped bolt 66, that is, around the rotation center of the ottoman bracket 56. The ottoman side link member 86 is provided with a cylindrical collar 92 that extends outward from the edge of the through hole 88 in the seat width direction, and the tip of the collar 92 is in contact with the ottoman bracket 56.

  A cylindrical pin 94 (engaging portion) protruding toward the ottoman bracket 56 is fixed to one end portion in the longitudinal direction of the ottoman side link member 86. The pin 94 turns around the stepped bolt 66 when the ottoman side link member 86 rotates relative to the connecting portion 34. The pin 94 is disposed to face the concave portion 76B of the latch 76 in a state where the ottoman side link member 86 is located at a position (position shown in FIGS. 7 to 9) extending substantially downward from the connecting portion 34. . In this state, the rotation of the latch 76 from the unlocked position to the locked position is allowed, and in the state where the latch 76 is located at the locked position, the pin 94 enters the recess 76B. (See FIG. 7). The pin 94 is formed on the protrusion 76A of the latch 76 when the ottoman side link member 86 is rotated from the position shown in FIG. 10 to the position shown by the solid line in FIG. It has come to hit. As a result, the latch 76 is rotated from the locked position to the unlocked position. However, immediately after that, the protrusion 56E of the ottoman side bracket 56 contacts the protrusion 76C of the latch 76, so that the latch 76 is rotated from the unlock position to the lock position again. Further, the latch 76 has the ottoman side link member 86 positioned at the position indicated by the solid line in FIG. 11 and the ottoman side link member 86 positioned at the rear end of the seat cushion frame 28 in a state where the latch 76 is positioned at the lock position. When it rotates to the side, as shown in FIG. 12, the protrusion 76A of the latch 76 is pushed by the pin 94, so that the latch 76 is rotated to the unlock position.

  In addition, a long hole 96 that is curved in an arc shape when viewed from the sheet width direction is formed concentrically with the through hole 88 at one longitudinal end of the ottoman side link member 86. A cylindrical pin 98 (see FIG. 6) is fixed to the other longitudinal end of the arm portion 56A corresponding to the long hole 96. The pin 98 extends inward in the sheet width direction from the other longitudinal end of the arm portion 56A. A cylindrical bush 90 is rotatably supported by the pin 98, and the bush 90 is inserted into the long hole 96. As a result, the rotation range of the ottoman bracket 56 relative to the ottoman side link member 86 is limited to the range of the long hole 96 (the ottoman bracket 56 and the ottoman side link member 86 are relatively rotatable within the range of the long hole 96. Have been).

  As shown in FIGS. 5 and 6, a torsion coil spring 102 that is a component of the interlocking mechanism 100 is provided between the ottoman bracket 56 and the ottoman side link member 86. The torsion coil spring 102 is wound around the collar 92 described above, and one end in the winding direction is locked to the ottoman bracket 56 and the other end in the winding direction is locked to the ottoman side link member 86. . As a result, the ottoman bracket 56 is biased with respect to the ottoman side link member 86 in a direction in which the bush 90 abuts against the one end portion 96 </ b> A of the long hole 96 in the bending direction.

  A pair of left and right link members 104, which are constituent members of the interlocking mechanism 100, are spanned between the ottoman 18 having the above configuration and the base portion 16 described above. These link members 104 are formed in a long shape from a sheet metal material or the like, and one end 104A in the longitudinal direction is connected to the above-described lower frame 20 via a hinge portion (not shown). Thereby, each link member 104 can be rotated around an axis S <b> 2 (see FIG. 4) along the sheet width direction with respect to the base portion 16. The axis S2 is set on the front side of the seat with respect to the rotation axis S1 of the seat cushion 12 with respect to the base portion 16.

  The other longitudinal end 104B of the left and right link members 104 is connected to the other longitudinal end of the left and right ottoman side link members 86. Specifically, as shown in FIG. 6, a circular through hole 106 is formed at the other longitudinal end of the ottoman side link member 86, and a cylindrical bush 108 is formed in the through hole 106. Are mated. A stepped bolt 112 with a washer 110 is inserted into the bush 108. The stepped bolt 112 is inserted through a through hole formed at the other longitudinal end of the link member 104 and is screwed into a nut 114 (see FIG. 5). Thereby, the other longitudinal end of the link member 104 is connected to the other longitudinal end of the ottoman side link member 86 so as to be rotatable around the stepped bolt 112 (around the axis along the sheet width direction).

  In the state where the seat cushion 12 (seat cushion frame 28) is located at the normal position, the left and right link members 104 are substantially along the seat front-rear direction on the lower side of the seat cushion frame 28 as shown by a solid line in FIG. Be placed. In this state, the left and right ottoman side link members 86 are substantially upright so as to extend from the other longitudinal end portion (front end portion) of the link member 104 to the upper side of the seat (see FIGS. 7 to 9). When the seat cushion 12 is rotated from this state to the tip-up position, the other longitudinal ends of the left and right ottoman side link members 86 are pulled by the left and right link members 104, and the left and right ottoman side link members 86 are seated. The cushion frame 28 is rotated to the rear end side (lower surface side) (see the two-dot chain line in FIG. 4 and FIG. 10). On the other hand, when the seat cushion 12 is rotated from the tip-up position to the normal position, the other longitudinal ends of the left and right ottoman side link members 86 are pushed by the left and right link members 104 to the front side of the seat cushion frame 28. It is rotated (see FIG. 11).

<Action and effect>
Next, the operation and effect of this embodiment will be described.

  In the vehicle seat 10 configured as described above, when the occupant seated on the seat cushion 12 uses the ottoman 18, the occupant moves the ottoman 18 against the urging force of the torsion coil spring 102 in the normal storage position shown in FIG. From the front to the front of the seat. Accordingly, when the ottoman bracket 56 is rotated from the position indicated by the two-dot chain line in FIG. 7 to the position indicated by the solid line in FIG. 7, the ratchet teeth 76D of the latch 76 mesh with the ratchet teeth 56D of the bearing portion 56C. As a result, the rotation of the ottoman bracket 56 toward the rear end side of the seat cushion 12 is restricted, and the ottoman 18 enters the deployed state.

  However, the rotation of the ottoman bracket 56 to the front side of the seat is permitted from the position indicated by the solid line in FIG. 7, and the meshing position of the ratchet teeth 56D of the bearing portion 56C with respect to the ratchet teeth 76D of the latch 76 can be changed. Has been. Therefore, the occupant determines the adjustment position of the ottoman 18 (the ottoman bracket 56) with respect to the seat cushion 12 between the position indicated by the solid line in FIG. 2 (FIG. 7) and the position indicated by the two-dot chain line in FIG. It is possible to adjust in multiple stages. Thereby, the comfort of the passenger | crew who uses the ottoman 18 can be improved.

  On the other hand, when the occupant stops using the ottoman 18 and stores the ottoman 18 in the normal storage position, the occupant rotates the ottoman 18 upward to position the ottoman bracket 56 in the position indicated by the solid line in FIG. It is sufficient to rotate it. As a result, the convex portion 56E of the ottoman bracket 56 hits the stepped portion 76E of the latch 76, so that the latch 76 jumps up to the unlocked position and is held in the unlocked position by the latch spring 82. For this reason, the ottoman bracket 56 is rotated toward the seat rear side (the seat lower side) by the urging force of the torsion coil spring 102. At the time of this rotation, as shown in FIG. 9, the protrusion 56E of the ottoman bracket 56 abuts against the protrusion 76C of the latch 76, whereby the latch 76 is rotated to the lock position, and the latch spring 82 locks the lock position. Retained.

  When the ottoman bracket 56 is rotated to the position indicated by the solid line in FIG. 9, the bush 90 supported by the ottoman bracket 56 comes into contact with one end portion 96A in the bending direction of the long hole 96 of the ottoman side link member 86, and the rear side of the seat The rotation of the ottoman bracket 56 is restricted. In this state, the ottoman 18 is held in the normal storage position by the urging force of the torsion coil spring 102 acting on the ottoman bracket 56.

  On the other hand, when the occupant operates the tip-up lever 48 to rotate the seat cushion 12 from the normal position to the tip-up position, the ottoman side link member 86 is pulled by the link member 104 and the lower surface of the seat cushion 12 is moved. Rotate to the side. For this reason, the ottoman bracket 56 in which the bush 90 is in contact with the one end portion 96A in the bending direction of the long hole 96 rotates to the lower surface side of the seat cushion 12 by the urging force of the torsion coil spring 102 while maintaining the contact state ( (See FIG. 10). When the seat cushion 12 is in the tip-up state (shown in FIG. 3), the ottoman 18 is held at the retracted position close to the lower surface of the seat cushion 12.

  Therefore, the amount of protrusion of the ottoman 18 from the seat cushion 12 is reduced as compared with the case where the seat cushion 12 is tipped up while the ottoman 18 is in the normal storage position (the state shown in FIG. 1). It is possible to suppress the ottoman 18 from interfering and to enlarge the space on the front side of the seat cushion 12 in the vehicle. Further, since the ottoman 18 is stored on the lower surface side of the seat cushion 12 in conjunction with the tip up of the seat cushion 12 as described above, the occupant only needs to perform one operation of operating the tip up lever 48. The property is very good.

  Moreover, the above-described interlocking is similarly performed even when the ottoman 18 is in the unfolded state (shown in FIG. 2). That is, in the deployed state of the ottoman 18, as shown in FIG. 12, the ottoman bracket 56 is held by the latch 76 at a position extending to the front side of the seat cushion frame 28. In this state, when the seat cushion 12 is tipped up, the ottoman side link member 86 is pulled by the link member 104 and rotates toward the rear end side of the seat cushion frame 28. At this time, the pin 94 provided on the ottoman side link member 86 hits the convex portion 76A of the latch 76, whereby the latch 76 is rotated to the unlock position, and the holding of the ottoman bracket 56 by the latch 76 is released. . Thereby, the ottoman bracket 56 is rotated toward the rear end side of the seat cushion 12 by the urging force of the torsion coil spring 102. At the time of this rotation, the convex portion 56E of the ottoman bracket 56 hits the convex portion 76C of the latch 76, whereby the latch 76 is rotated to the locked position. The rotation of the ottoman bracket 56 relative to the ottoman side link member 86 is restricted by the bushing 90 of the ottoman bracket 56 coming into contact with one end portion 96A of the elongated hole 96 of the ottoman side link member 86, as shown in FIG. It will be in a state to be. Moreover, the above-described pin 94 engages with the convex portion 76A of the latch 76 regardless of the meshing position between the ratchet teeth 76D of the latch 76 and the ratchet teeth 56D of the bearing portion 56C. Therefore, regardless of the adjustment position of the ottoman 18, the ottoman 18 can be stored in the storage position in conjunction with the tip-up of the seat cushion 12, so that the occupant has to return the ottoman 18 to the normal storage position before tip-up. Can be omitted. Thereby, operativity can be made still more favorable.

  On the other hand, when the seat cushion 12 is rotated from the tip-up position to the normal position, the ottoman side link member 86 is pushed by the link member 104 and rotates to the front side of the seat cushion frame 28. As a result, the ottoman bracket 56 in which the bush 90 is in contact with the one end portion 96A of the elongated hole 96 of the ottoman side link member 86 is rotated together with the ottoman side link member 86 to the front side of the seat cushion frame 28 (FIG. 11). As a result, the ottoman 18 is rotated from the storage position to the normal storage position. At the time of this rotation, the pin 94 of the ottoman side ottoman bracket 56 hits the convex portion 76A of the latch 76, so that the latch 76 is once jumped up to the unlock position. Thereafter, the convex portion of the ottoman bracket 56 When 56E hits the convex portion 76C of the latch 76, the latch 76 is rotated again to the locked position.

  As described above, in this embodiment, the ottoman 18 is rotated from the storage position to the normal storage position in conjunction with the rotation of the seat cushion 12 to the normal position, so that the occupant rotates the ottoman 18 to the normal storage position. Save time and effort. Therefore, the operability can be improved also in this respect.

<Supplementary explanation of the embodiment>
In the above embodiment, the case where the ratchet type lock mechanism 42 is employed has been described. However, the inventions according to claims 1 and 2 are not limited thereto, and the configuration of the lock mechanism can be changed as appropriate. For example, a configuration such as a lock spring type lock mechanism (for example, see Japanese Patent Application Laid-Open No. 2004-147791) may be adopted.

  In the above-described embodiment, the holding position of the ottoman bracket 56 with respect to the seat cushion frame 28 is configured to be adjustable in a plurality of stages. However, the present invention is not limited to this, and the configuration in which only one holding position of the ottoman bracket is set. It may be.

  Moreover, in the said embodiment, although the ottoman 18 was set as the structure provided with the ottoman side link member 86 and the torsion coil spring 102 (biasing member), the invention which concerns on Claim 1 is not restricted to this, Ottoman side link member The urging member may be omitted, and the link member of the interlocking mechanism may be directly connected to the ottoman bracket of the ottoman. Even in such a configuration, the ottoman can be rotated in conjunction with the tip-up of the seat cushion. However, in such a configuration, in order to expand the ottoman toward the front side of the seat cushion, the link member needs to be configured to be extendable and contractible.

  In addition, the present invention can be implemented with various modifications without departing from the scope of the invention. Needless to say, the scope of rights of the present invention is not limited to the above embodiments.

10 Vehicle Seat 12 Seat Cushion 18 Ottoman 28 Seat Cushion Frame 50 Ottoman Body 56 Ottoman Bracket 56D Ratchet Teeth (Tooth)
75 Locking mechanism 76 Latch 86 Ottoman side link member 94 Pin (engagement part)
100 interlocking mechanism 102 torsion coil spring (biasing member)
104 Link member

Claims (3)

A base portion supported by the vehicle body floor,
A seat cushion capable of tip-up around the rear end side connected to the base part;
An ottoman that is rotatable back and forth around the upper end side connected to the front end side of the seat cushion;
An interlocking mechanism having a link member spanned between the base portion and the ottoman, and rotating the ottoman toward the rear end side of the seat cushion in conjunction with tip-up of the seat cushion;
Vehicle seat equipped with The ottoman is
Extending from the ottoman body for supporting the occupant's lower leg, is rotatably connected to the front end portion of the seat cushion frame provided in the seat cushion, and the biasing member provided in the interlocking mechanism allows the seat cushion to An ottoman bracket biased toward the rear end,
A lock mechanism for holding the ottoman bracket in a state where the ottoman body extends to the front side of the seat cushion;
An ottoman-side link member that is provided so as to be rotatable within a predetermined range with respect to the ottoman bracket and that is connected to the link member and is rotated when the seat cushion is tipped up to engage with the lock mechanism and release the holding. When,
The vehicle seat according to claim 1. The lock mechanism has a latch that is attached to a front end portion of the seat cushion frame and meshes with teeth formed on the ottoman bracket, and the meshing position of the teeth with respect to the latch can be changed. The holding position of the ottoman bracket with respect to the seat cushion frame can be adjusted in multiple stages,
The vehicle seat according to claim 2, wherein the ottoman side link member is provided with an engagement portion that engages with the latch and releases the engagement when the seat cushion is tipped up.

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