JP2008030659A - Vehicle seat device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance getting in/out property to a vehicle seat on the rear side by a simple operation. <P>SOLUTION: Seat arrangements include a seated condition allowing an occupant to be seated, and a getting in/out condition in which a seat back 14 is tilted forward and a seat cushion 12 is erected, and the seat arrangements are transformed from the seated condition to the getting in/out condition interlockingly with the slide of the seat cushion 12 and the seat back 14 to the vehicle front by a seat slide device 16. This permits the transformation of the seat arrangements by a simple operation. On this occasion, the seat cushion 12 is erected, which assures larger slide amount of the seat back 14. Furthermore, both of the seat cushion 12 and the seat back 14 are slid to the vehicle front more, which enhances getting in/out property to the vehicle seat on the rear side. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle seat device.

As a conventional vehicle seat, a dive-down seat is disclosed in which a seat cushion is lowered onto a floor in conjunction with forward folding of a seat back when the seat is folded (see Patent Document 1). Further, a chip-up type sheet having a walk-in function is disclosed (see Patent Document 2).
JP-A-2005-67325 JP 2004-359111 A JP 2004-175300 A Japanese Utility Model Publication No. 63-121143 JP 2005-335697 A

  However, in the conventional example described in Patent Document 1, when the seat is folded, the seat cushion moves forward and downward in conjunction with the forward tilting of the seat back. Therefore, the sliding amount is limited in a limited space such as a passenger compartment. It will be restricted. In addition, when moving the seat cushion forward and downward, the lower part of the seat back is slid to the rear of the vehicle in order to prevent interference between the seat back and the front seat. However, there is still room for improvement. On the other hand, in the conventional example described in Patent Document 2, the seat cushion tip-up and the forward movement of the seat are separate operations, and there is room for improvement in terms of operability.

  In view of the above facts, an object of the present invention is to improve the ease of getting on and off the rear vehicle seat with a simple operation.

  The invention according to claim 1 is a seat cushion on which an occupant can be seated, a seat back configured as a backrest of the occupant and configured to be able to be tilted forward to the seat cushion side, and the seat cushion and the seat back in the vehicle front-rear direction. A seat slide device that allows the occupant to sit, and a seating state in which the seat back is tilted forward and the seat cushion is in an upright state. The seat arrangement is deformed from the seating state to the boarding / alighting state in conjunction with the sliding of the seat cushion and the seat back forward of the vehicle by the seat slide device.

  In the vehicle seat device according to claim 1, the seat arrangement includes a seating state and a boarding / alighting state, and the seat arrangement is performed in conjunction with the sliding of the seat cushion and the seat back to the front of the vehicle by the seat sliding device. Deforms from the seated state to the boarding / alighting state. For this reason, the sheet arrangement can be modified with a simple operation. At this time, since the seat cushion stands up, it is possible to secure a larger amount of sliding of the seat back, and both the seat cushion and the seat back slide more forward in the vehicle. The property becomes better.

  According to a second aspect of the present invention, in the vehicle seat device according to the first aspect, as the seat arrangement, the seat cushion moves downward in the front of the vehicle and the seat back is superposed on the upper side of the seat cushion. It is characterized by having.

  In the vehicle seat device according to claim 2, as the seat arrangement, the seat cushion has a retracted state in which the seat cushion moves downward in the front of the vehicle and the seat back is superimposed on the upper side of the seat cushion. The seat arrangement can be selectively transformed into the boarding / alighting state or the retracted state, and a wider variety of seat arrangements are possible.

  According to a third aspect of the present invention, in the vehicle seat device according to the first or second aspect, a cable having one end connected to the seat cushion, the seat slide device, and the cable can be wound up. And an adjustment unit that adjusts a feeding amount of the cable as the seat cushion and the seat back are slid by the seat slide device.

  In the vehicle seat device according to claim 3, one end of the cable fed out from the adjustment unit is connected to the seat cushion, and the amount of the cable fed out is adjusted as the seat cushion and the seat back are slid by the seat slide device. Therefore, when the seat arrangement is deformed from the seated state to the boarding / alighting state, the cable is fed out from the adjusting portion as the seat cushion rises. Further, when the seat arrangement is deformed from the boarding / alighting state to the seating state, the cable is wound around the adjusting portion as the seat cushion falls down. For this reason, the operativity at the time of changing a seat arrangement between a seating state and a boarding / alighting state can be improved.

  According to a fourth aspect of the present invention, in the vehicle seat device according to the third aspect, as the adjusting portion, a gear rotatably supported by an upper rail that is a movable side member of the seat slide device, and the seat slide device A rack that is provided in a predetermined range of a lower rail that is a fixed-side member of the upper rail, and that rotates the gear when the gear moves within the predetermined range by sliding of the upper rail, and the cable according to the rotation direction of the gear. The cable is configured so that it can be wound and fed out, and the cable is unwound when the seat arrangement is deformed from the seating state to the boarding / alighting state, and the cable is wound when the seat arrangement is deformed from the boarding / alighting state to the seating state. And a drum to be taken.

  In the vehicle seat device according to claim 4, the gear is supported by the upper rail that is the movable side member of the seat slide device, and the rack is provided in a predetermined range of the lower rail that is the fixed side member of the seat slide device, When the upper rail is slid with the gear engaged with the rack, the gear is rotated by the rack, and the drum rotates with the gear. As a result, the cable can be wound and delivered by the drum in conjunction with the slide of the upper rail, and the operability when the seat arrangement is deformed between the seating state and the boarding state can be further improved. it can.

  As described above, according to the vehicular seat device according to the first aspect of the present invention, an excellent effect is obtained in that the ease of getting on and off the rear vehicular seat can be improved by a simple operation. .

  According to the vehicle seat device of claim 2, the seat arrangement can be selectively transformed from the seated state to the boarding / alighting state or the retracted state, and an excellent variety of seat arrangements is possible. An effect is obtained.

  According to the vehicle seat device according to claim 3, the cable is wound and fed out by the adjusting unit in accordance with the sliding of the seat cushion and the seat back by the seat sliding device, so that the seating state and the getting on / off state are between Thus, it is possible to improve the operability when the seat arrangement is changed.

  According to the vehicle seat device of the fourth aspect, when the seat arrangement is deformed between the seating state and the boarding / alighting state by winding and unwinding the cable with the drum in conjunction with the slide of the upper rail. It is possible to obtain an excellent effect that the operability can be further improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
In FIG. 1, the vehicle seat device 10 according to the present embodiment includes a seat cushion 12, a seat back 14, a seat slide device 16, a cable 18, and an adjustment unit 22. The vehicle seat device 10 includes a seating state in which an occupant (not shown) can sit as a seat arrangement, a boarding / alighting state in which the seat back 12 is tilted forward and the seat cushion 12 is in an upright state, and the seat cushion 12 is It has a retracted state in which the seat back 14 is superposed on the upper side of the seat cushion 12 by moving downward in the front of the vehicle, and in conjunction with the sliding of the seat cushion 12 and the seat back 14 forward of the vehicle by the seat slide device 16 The seat arrangement is configured to be deformed from the seated state to the boarding / alighting state.

  The seat cushion 12 is a component that constitutes a seating surface on which an occupant can sit, and has a seat cushion frame 24. The seat cushion frame 24 is, for example, a substantially rectangular frame-like body, and has a net-like spring (not shown), for example. The seat cushion frame 24 is covered with a cushion material (not shown) molded into a predetermined shape, and the cushion material is further covered with a seat skin (not shown).

  The seat back 14 is a component that has a seat back frame 26 and is provided on the base member 28 via the reclining mechanism 30 so that the inclination angle can be adjusted. The seat back frame 26 includes side frames 26A provided on both sides in the vehicle width direction, and upper pipes 26B that connect the upper portions of the side frames 26A.

  For example, a net-like spring (not shown) is stretched on the side frame 26A. The seat back frame 26 is covered with a cushion material (not shown) molded in a predetermined shape, and the cushion material is further covered with a seat skin (not shown).

  The base member 28 is disposed on the seat slide device 16, and a reclining mechanism 30 is disposed at the rear of the base member 28. The reclining mechanism 30 is connected to the lower end of the side frame 26 </ b> A in the seat back frame 26. An operation lever 32 that is operated when changing the seat arrangement is provided on, for example, a side surface of the seat back 14. As the operation lever 32, an operation lever used when the seat arrangement is set in the retracted state and an operation lever used when the seat arrangement is set in the getting on / off state may be provided separately.

  The reclining mechanism 30 includes a stopper mechanism (not shown) that restricts the tilting movement of the seat back 14, and the seat arrangement is changed from a seated state to a boarding / exiting state (walk-in state: a state in which the seat cushion 12 is raised, When the seat cushion 12 is raised to release the lock of the seat slide device 16 and the seat is moved to the foremost position), the seat back 14 is tilted forward to a predetermined angle of inclination. When the seat arrangement is deformed from the seating state to the retracted state, the restriction of the tilting operation of the seat back 14 up to a predetermined inclination angle by the stopper mechanism is released, and the seat back is released. 14 is folded to the position where it overlaps the seat cushion 12 And it is configured to be able to.

  The seat slide device 16 is a combination of an upper rail 34 that is a movable member and a lower rail 36 that is a fixed member, and the upper rail 34 is configured to be slidable on the lower rail 36 in the vehicle front-rear direction. A pair of left and right lower rails 36 is fixed in parallel to each other on a floor (not shown) for each vehicle seat device 10, and one upper rail 34 is assembled to each lower rail 36.

  A base member 28 is fixed to the rear portion of the upper rail 34, and a drum 38 and a gear 48 of the adjustment unit 22 are rotatably supported near the base member 28. One end 41 </ b> A of the first connecting member 41 is rotatably connected to the front portion of the upper rail 34.

  On the other hand, a rack 44 of the adjusting portion 22 is provided in a predetermined range of the lower rail 36 along the sliding direction of the upper rail 34, that is, the vehicle front-rear direction. The rack 44 is configured to mesh with the gear 48 and rotate the gear 48 when the gear 48 moves within the predetermined range due to the sliding of the upper rail 34. The rack 44 is provided, for example, at the front portion of the lower rail 36 so that the gear 48 can be rotated when the upper rail 34 is slid to the front of the vehicle to some extent.

  The drum 38 is configured so that the cable 18 can be wound and fed according to the rotation direction of the gear 48. Specifically, when the seat arrangement is changed from the seating state to the boarding / alighting state, the cable 18 is fed out and the seat arrangement is boarded / exited. The cable 18 is wound up when being deformed from the state to the seated state. A portion of the cable 18 that is fed out from the drum 38 is guided by the cable outer 54 and extends to, for example, a rear portion of the seat cushion frame 24 in the seat cushion 12, and one end 18 </ b> A of the cable 18 is connected to the rear portion. A clutch (not shown) capable of switching the presence or absence of driving force transmission is provided between the drum 38 and the gear 48, and when the seat arrangement is deformed between the seating state and the boarding / alighting state, for example, the operation lever 32 is used. The clutch may be turned on by the operation of, and may be turned off otherwise.

  The other end 41B of the first connecting member 41 is rotatably connected to the front portion of the seat cushion frame 24, and a mainspring spring 50 is provided at the other end 41B, for example. The mainspring spring 50 biases the seat cushion frame 24 counterclockwise with respect to the first connecting member 41, that is, in the direction of lifting the rear portion of the seat cushion 12 upward in the vehicle.

  The seat cushion frame 24 and the seat back frame 26 are connected by a second connecting member 42 having a boomerang shape, for example. Specifically, in FIG. 1, one end 42 </ b> A of the second connecting member 42 is pivotally connected to the vehicle rear side, for example, the center portion, from the connecting point of the other end 41 </ b> B of the first connecting member 41 in the seat cushion frame 24. Further, the other end 42B of the second connecting member 42 is rotatably connected to, for example, a lower portion of the side frame 26A in the seat back frame 26. The seat cushion frame 24 is provided with a lock member 52 that restricts the movement of the second coupling member 42 relative to the seat cushion frame 24 by engaging with one end 42 </ b> A of the second coupling member 42. The lock member 52 is connected to the operation lever 32 by a cable (not shown). By operating the operation lever 32, the lock state of the second connection member 42 by the lock member 52 can be released.

  When the restriction of the second connecting member 42 by the lock member 52 is released, the cable 18 is wound so that the rear portion of the seat cushion 12 is not immediately lifted upward by the urging force of the mainspring spring 50. For example, an appropriate rotational resistance is given to the drum 38. As this rotational resistance, a frictional resistance may be used, or a biasing means such as a mainspring spring that generates a resistance against the rotation of the drum 38 in the feeding direction may be used.

  As for the operation lever 32, an operation lever used when the seat arrangement is changed from the seating state to the retracted state and an operation lever used when the seat arrangement is changed from the seating state to the getting on / off state are provided separately. Also good.

(Function)
This embodiment is configured as described above, and the operation thereof will be described below. As shown in FIG. 1, in the vehicle seat device 10 when the seat arrangement is in the seated state, the lock member 52 is engaged with the one end 42 </ b> A of the second connecting member 42, and thus the seat cushion 12. The rear portion is not lifted upward by the urging force of the mainspring spring 50, so that the seat cushion 12 and the seat back 14 are held in a seated state in which the seat cushion 12 and the seat back, for example, are moderately tilted backward. At this time, many portions of the cable 18 are wound around the drum 38 of the adjustment portion 22, and the rear portion of the seat cushion frame 24 is supported by a support portion (not shown) provided on the base member 28, for example. ing.

  When the seat arrangement is in the seating state, the front and rear positions of the vehicle seat device 10 can be adjusted by sliding the upper rail 34 on the lower rail 36. When a clutch is provided between the drum 38 and the gear 48, even if the gear 48 is engaged with the rack 44 and rotated, the driving force is not transmitted to the drum 38. The cable 18 is not drawn out without standing.

  Next, an operation when the seat arrangement is changed from the seating state to the boarding / alighting state will be described. In this case, it is possible to change the seat arrangement to the boarding / alighting state by performing a predetermined operation with the operation lever 32 and sliding the seat cushion 12 and the seat back 14 forward using the seat slide device 16.

  Specifically, when a predetermined operation by the operation lever 32 is performed, a cable (not shown) is pulled, the lock member 52 is detached from the one end 42A of the second connecting member 42, and the locked state is released. The seat cushion 12 can be rotated by the urging force. However, since an appropriate rotational resistance is imparted to the drum 38, the cable 18 is not fed out from the drum 38 when it is not rotationally driven by the rack 44, and the rear portion of the seat cushion 12 is lifted upwards of the vehicle. Will not stand up.

  When a predetermined operation is performed by the operation lever 32, the seat back 14 is unlocked by the reclining mechanism 30 separately from the unlocked state by the lock member 52, and the seat back 14 can be moved forward. Further, at this time, in the seat slide device 16, the upper rail 34 is slidable on the lower rail 36.

  As described above, when the seat cushion 12 and the seat back 14 are slid forward in the vehicle after performing a predetermined operation by the operation lever 32, the seat cushion 12 and the seat back 14 are moved until the gear 48 meshes with the rack 44. Moves forward in the seated position.

  Then, after the gear 48 is engaged with the rack 44, when the seat cushion 12 and the seat back 14 are further slid forward, the gear 48 is driven to rotate by the rack 44. Accordingly, the drum 38 rotates counterclockwise on the paper surface. That is, the cable 18 rotates in the feeding direction. As the drum 38 rotates in this manner, the cable 18 is drawn out from the drum 38, and as shown in FIG. 2, the rear portion of the seat cushion 12 is gradually lifted upward and becomes an upright state. Further, since the seat cushion 12 and the seat back 14 are connected by the second connecting member 42, the seat back 14 is brought forward with the standing of the seat cushion 12.

  In this manner, in the vehicle seat device 10, the seat arrangement is changed from the seating state to the boarding / alighting state by a simple operation of operating the operation lever 32 and sliding the seat cushion 12 and the seat back 14 forward of the vehicle. be able to. In addition, the cable 18 can be wound and unwound by the drum 38 in conjunction with the sliding of the upper rail 34 in a state where the rack 44 and the gear 48 are engaged, so that the seat arrangement can be performed between the seating state and the boarding / alighting state. The operability at the time of performing the deformation can be improved.

  Further, in the vehicle seat device 10, the seat arrangement is changed from the seating state to the boarding / alighting state in conjunction with the sliding of the seat cushion 12 and the seat back 14 forward of the vehicle by the seat sliding device 16. As a result, both the seat cushion 12 and the seat back 14 slide more forward in the vehicle, so that it is possible to more easily get on and off the rear vehicle seat.

  When returning the seat arrangement from the boarding / alighting state to the seating state, by pulling the seat back 14 toward the rear of the vehicle, the drum 38 rotates clockwise while engaged with the rack 44, and the cable 18 is connected to the drum 38. It is wound up. The seat cushion 12 is pulled back by the cable 18 so as to resist the urging force of the mainspring spring 50 and falls toward the rear of the vehicle around the other end 41 </ b> B of the first connecting member 41. The second connecting member 42 is engaged with the one end 42A to be locked. At this time, the seat back 14 gradually falls backward by the second connecting member 42 in conjunction with the fall of the seat cushion 12. In this manner, as shown in FIG. 1, the seat cushion 12 and the seat back 14 return to the seated state in which the seat is tilted rearward.

  Next, an operation when the seat arrangement is changed from the sitting state to the retracted state will be described. In FIG. 1, when a predetermined operation is performed by the operation lever 32, the seat back 14 is unlocked by the reclining mechanism 30. At this time, the lock member 52 is engaged with the one end 42 </ b> A of the second connecting member 42, and is regulated so that no relative movement occurs between the second connecting member 42 and the seat cushion frame 24.

  As shown in FIG. 3, when the seat back 14 is moved forward in this state, the seat cushion 12 is pushed forward by the second connecting member 42 and the first connecting member 41 moves the one end 41A. Since the vehicle falls to the front of the vehicle as the center, as a result, the seat cushion 12 moves downward in the front of the vehicle so as to approach the seat slide device 16. At the same time, the seat back 14 is superposed on the upper side of the seat cushion 12, and the deformation of the seat arrangement from the sitting state to the retracted state is completed.

  The cable 18 is connected to the rear portion of the seat cushion frame 24. However, when the seat cushion 12 moves downward in front of the vehicle, the drum 38 rotates due to the tension on the cable 18 being increased. 18 is withdrawn by the required amount. Depending on the arrangement of the cable outer 54, it is possible to change the seat arrangement between the seated state and the retracted state without pulling out the cable 18. When the seat arrangement is returned from the retracted state to the seated state, the seat cushion 12 can be returned to the seatable state via the second connecting member 42 by causing the seat back 14.

  As described above, in the vehicle seat device 10, the seat arrangement can be selectively changed from the seated state to the boarding / alighting state or the retracted state, and more various seat arrangements are possible.

[Second Embodiment]
4 to 6, the vehicle seat device 20 according to the present embodiment is similar to the first embodiment in that the seat arrangement includes a seating state, a boarding / alighting state, and a retracted state. Since the configuration for raising the seat cushion 12 when changing to the boarding / alighting state is different from that of the first embodiment, the difference will be described.

  As shown in FIG. 5, one end 61A of the first connecting member 61 is rotatably connected to the front portion of the upper rail 34 in the seat slide device 16, and the other end 61B of the first connecting member 61 is The third connecting member 63 is rotatably connected to one end 63A of the third connecting member 63. The third connecting member 63 is, for example, a boomerang-shaped member, and the other end 63B of the third connecting member 63 is seated together with the other end 62B of the second connecting member 62 whose one end 62A is fixed to the seat cushion frame 24. The back frame 26 is rotatably connected to, for example, the lower portion of the side frame 26A. The other end 62B of the second connecting member 62 and the other end 63B of the third connecting member 63 are pivoted, for example, coaxially.

  The second connecting member 62 is, for example, a boomerang-shaped member, and rotates the vehicle cushion upward about the other end 62B, thereby lifting the front portion of the seat cushion 12 upward and raising the seat cushion 12. Be able to. Specifically, a mainspring spring 64 is provided at the other end 62 </ b> B of the second connecting member 62, and the mainspring spring 64 moves the second connecting member 62 from the third connecting member 63 to a paper surface clock. It is energized in the direction of turning, that is, the front portion of the seat cushion 12 is lifted upward.

  As shown in FIGS. 4 and 6, the other end 61 </ b> B of the first connecting member 61 and the one end 63 </ b> A of the third connecting member 63 are detachable from the seat cushion frame 24 at the front portion of the seat cushion frame 24. There is provided a lock member 66 connected to the. Specifically, the lock member 66 is engaged with the pin 70 provided on the side of the other end 61 </ b> B of the first connecting member 61, so that the first connecting member 61 and the third connecting member 63 are engaged. The first connecting member 61 and the third connecting member 63 are rotatable with respect to the lock member 66 during the connection.

  The lock member 66 is urged by, for example, a front end side of the seat cushion frame 24 by a tension coil spring 68 and is connected to the operation lever 32 by a cable (not shown). By a predetermined operation of the operating lever 32, the lock member 66 is swung against the urging force of the tension coil spring 68, and the engagement with the pin 70 can be released.

  The pin 70 is provided on the same axis as a shaft (not shown) that pivotally supports the other end 61B of the first connecting member 61 and the one end 63A of the third connecting member 63. Instead, it may be configured to protrude from the side portion of the other end 61 </ b> B and engage with the lock member 66.

  Since other parts are the same as those in the first embodiment, the same parts are denoted by the same reference numerals in the drawings, and the description thereof is omitted.

(Function)
This embodiment is configured as described above, and the operation thereof will be described below. As shown in FIG. 4, in the vehicle seat device 20 when the seat arrangement is in the seated state, the lock member 66 is engaged with the pin 70 and is in the locked state, so that the seat cushion 12 is attached to the mainspring spring 64. The seat cushion 12 and the seat back 14 are held in a seated state in which the seat cushion 12 and the seat back 14 are appropriately tilted backward, for example, without being lifted upward by the force. At this time, many portions of the cable 18 are wound around the drum 38 of the adjustment unit 22.

  When the seat arrangement is in the seating state, the front and rear positions of the vehicle seat device 20 can be adjusted by sliding the upper rail 34 on the lower rail 36. When a clutch is provided between the drum 38 and the gear 48, even if the gear 48 is engaged with the rack 44 and rotated, the driving force is not transmitted to the drum 38. The cable 18 is not drawn out without standing.

  Next, an operation when the seat arrangement is changed from the seating state to the boarding / alighting state will be described. In this case, a predetermined operation by the operation lever 32 is performed, and the seat cushion 12 and the seat back 14 are slid forward using the seat slide device 16, so that the seat arrangement can be transformed into the getting on / off state. .

  Specifically, when a predetermined operation is performed by the operation lever 32, a cable (not shown) is pulled, the lock member 66 swings against the urging force of the mainspring spring 64 and is detached from the pin 70, and the locked state is established. Since the release is released, the seat cushion 12 can be rotated via the second connecting member 62 by the urging force of the mainspring spring 64. However, since an appropriate rotational resistance is imparted to the drum 38, the cable 18 is not drawn out from the drum 38 when it is not rotationally driven by the rack 44. The front part is not lifted upward and does not stand up.

  Further, when a predetermined operation is performed by the operation lever 32, the seat back 14 is unlocked by the reclining mechanism 30 separately from the unlocked state by the lock member 66, and the seat back 14 can be moved forward. Further, at this time, in the seat slide device 16, the upper rail 34 is slidable on the lower rail 36.

  As described above, when the seat cushion 12 and the seat back 14 are slid forward in the vehicle after performing a predetermined operation by the operation lever 32, the seat cushion 12 and the seat back 14 are moved until the gear 48 meshes with the rack 44. Moves forward in the seated position.

  Then, after the gear 48 is engaged with the rack 44, when the seat cushion 12 and the seat back 14 are further slid forward, the gear 48 is driven to rotate by the rack 44. Accordingly, the drum 38 rotates counterclockwise on the paper surface. That is, the cable 18 rotates in the feeding direction. As the drum 38 rotates in this manner, the cable 18 is fed out from the drum 38, and as shown in FIG. 5, the front portion of the seat cushion 12 is gradually lifted upward and the vehicle is standing. . Further, at this time, the seat back 14 is appropriately tilted forward by the operation of the reclining mechanism 30, and the third connecting member 63 is slightly pushed forward in accordance with the forward tilt of the seat back 14. The first connecting member 61 slightly swings forward of the vehicle about the one end 61 </ b> A as the third connecting member 63 is pushed out.

  In this manner, in the vehicle seat device 20, the seat arrangement is changed from the seating state to the boarding / alighting state by a simple operation of operating the operation lever 32 and sliding the seat cushion 12 and the seat back 14 forward of the vehicle. be able to. In addition, the cable 18 can be wound and unwound by the drum 38 in conjunction with the sliding of the upper rail 34 in a state where the rack 44 and the gear 48 are engaged, so that the seat arrangement can be performed between the seating state and the boarding / alighting state. The operability at the time of performing the deformation can be improved.

  Further, in the vehicle seat device 20, the seat arrangement is deformed from the seating state to the boarding / alighting state in conjunction with the sliding of the seat cushion 12 and the seat back 14 forward of the vehicle by the seat sliding device 16, so the sliding amount of the seat back 14 As a result, both the seat cushion 12 and the seat back 14 slide more forward in the vehicle, so that it is possible to more easily get on and off the rear vehicle seat.

  When returning the seat arrangement from the boarding / alighting state to the seating state, by pulling the seat back 14 toward the rear of the vehicle, the drum 38 rotates clockwise while engaged with the rack 44, and the cable 18 is connected to the drum 38. It is wound up. The seat cushion 12 is pulled back by the cable 18 so as to resist the urging force of the mainspring spring 64 and to fall toward the front of the vehicle with the other end 62B of the second connecting member 62 as a center. Engage with the pin 70 to be locked. In this way, as shown in FIG. 4, the seat cushion 12 and the seat back 14 are returned to the seated state in which the seat is tilted back appropriately.

  Next, an operation when the seat arrangement is changed from the sitting state to the retracted state will be described. In FIG. 4, when a predetermined operation is performed with the operation lever 32, the seat back 14 is unlocked by the reclining mechanism 30. At this time, the lock member 66 is engaged with the pin 70, and the seat cushion 12 does not stand up by the urging force of the mainspring spring 64.

  As shown in FIG. 6, when the seat back 14 is tilted forward in this state, the seat cushion 12 is pushed forward by the third connecting member 63 and accordingly the first connecting member 61 moves the one end 61A. Since the vehicle falls to the front of the vehicle as the center, as a result, the seat cushion 12 moves downward in the front of the vehicle so as to approach the seat slide device 16. At the same time, the seat back 14 is superposed on the upper side of the seat cushion 12, and the deformation of the seat arrangement from the sitting state to the retracted state is completed.

  The cable 18 is connected to the rear portion of the seat cushion frame 24. However, when the seat cushion 12 moves downward in front of the vehicle, the drum 38 rotates due to the tension on the cable 18 being increased. 18 is withdrawn by the required amount. Depending on the arrangement of the cable outer 54, it is possible to change the seat arrangement between the seated state and the retracted state without pulling out the cable 18. When returning the seat arrangement from the retracted state to the sitting state, the seat back 12 can be caused to return the seat cushion 12 to the seatable state via the third connecting member 63.

  As described above, also in the vehicle seat device 20, the seat arrangement can be selectively changed from the seating state to the boarding / alighting state or the retracted state, and more various seat arrangements are possible.

  In each of the above embodiments, the seat arrangement has a seating state, a boarding / alighting state, and a retracted state, but is not limited to this, as long as it has at least a seating state and a boarding / alighting state. Good.

  Further, the length and arrangement of the rack 44 are not limited to those shown in the drawing. The gear 48 and the rack 44 may always mesh with each other as long as a clutch or the like that can switch whether or not the driving force is transmitted from the gear 48 to the drum 38 is provided.

  Furthermore, the drum 38, the gear 48, and the rack 44 are illustrated as the adjustment unit 22. However, the configuration of the adjustment unit 22 is not limited to these components. For example, when the seat arrangement is changed from the seating state to the boarding / exiting state, for example, The seat cushion 12 may be configured to stand up by a driving source such as a motor.

FIGS. 1 to 3 relate to the first embodiment, and FIG. 1 is a side view showing the vehicle seat device when the seat arrangement is in the seating state. It is a side view which shows the vehicle seat apparatus when a seat arrangement is a boarding / alighting state. It is a side view which shows the vehicle seat apparatus when a seat arrangement is a retracted state. FIGS. 4 to 6 relate to the second embodiment, and FIG. 4 is a side view showing the vehicle seat device when the seat arrangement is in the seating state. It is a side view which shows the vehicle seat apparatus when a seat arrangement is a boarding / alighting state. It is a side view which shows the vehicle seat apparatus when a seat arrangement is a retracted state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle seat apparatus 12 Seat cushion 14 Seat back 16 Seat slide apparatus 18 Cable 18A One end 20 Vehicle seat apparatus 22 Adjustment part 30 Reclining mechanism 34 Upper rail 36 Lower rail 38 Drum 44 Rack 48 Gear 48

Claims (4)

A seat cushion on which an occupant can sit,
A seat back configured as a backrest of the occupant and configured to be able to be tilted forward to the seat cushion side;
A seat slide device that enables the seat cushion and the seat back to slide in the vehicle front-rear direction,
As a seat arrangement, it has a seating state in which the occupant can be seated, and a boarding / alighting state in which the seat cushion is raised and the seat cushion is in a standing state
The vehicle seat device according to claim 1, wherein the seat arrangement is deformed from the seating state to the boarding / alighting state in conjunction with the sliding of the seat cushion and the seat back forward of the vehicle by the seat sliding device.   2. The vehicle seat device according to claim 1, wherein the seat arrangement includes a retracted state in which the seat cushion moves downward in the front of the vehicle and the seat back is superimposed on the upper side of the seat cushion. A cable having one end connected to the seat cushion;
An adjustment unit that is provided in the seat slide device and is configured to be able to wind the cable, and that adjusts a feeding amount of the cable as the seat cushion and the seat back are slid by the seat slide device. The vehicular seat device according to claim 1 or 2 characterized by these. As the adjustment unit,
A gear rotatably supported by an upper rail which is a movable side member of the seat slide device;
A rack that is provided in a predetermined range of a lower rail that is a fixed side member of the seat slide device, and that rotates the gear when the gear moves within the predetermined range by sliding of the upper rail;
The cable can be wound up and fed out according to the rotation direction of the gear, and the cable is fed out when the seat arrangement is deformed from the seating state to the boarding / alighting state, and the seat arrangement is removed from the boarding / alighting state. A drum that winds up the cable when deformed to a seated state;
The vehicle seat device according to claim 3, further comprising: