JP2009006789A - Driving posture adjustment device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily and properly adjust posture of a driver when sitting on an occupant seat. <P>SOLUTION: The driving posture adjustment device is provided with a seat position adjustment mechanism 2 for adjusting front and rear positions by longitudinally moving a seat cushion part 1a of the occupant seat 1; and a floor lifting mechanism 6 for lifting/driving a movable floor part 5 placed with a heel part of the foot when the driver sitting on the occupant seat 1 steps an operation pedal 3. The adjustment device is provided with a pull cable for transmitting the drive force to the floor lifting mechanism 6 as tension force when the seat cushion part 1a is moved to a front side of the vehicle body by the seat position adjustment mechanism 2; and a winding mechanism arranged at the vehicle body side and wound with the pull cable. A base end of the pull cable wound on the winding mechanism is extended to a front side of the vehicle body and is connected to the seat cushion part 1a, and a distal end of the pull cable is connected to the pulling up part of the floor lifting mechanism 6. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention includes a seat position adjustment mechanism that adjusts the front / rear position of a seat cushion portion of an occupant's seat that includes a driver's seat and a footrest when a driver seated on the occupant's seat depresses an operation pedal. The present invention relates to a driving posture adjusting device including a floor lifting mechanism that lifts and lowers a movable floor portion on which a collar portion is placed.

2. Description of the Related Art Conventionally, as shown in, for example, Patent Document 1 below, an automobile including a seat position adjusting unit that adjusts the front / rear position of an occupant seat and a driving posture adjustment unit that includes a movable floor provided in front of the occupant seat In the seating posture adjusting device, the drive motor of the seat position adjusting means is disposed on the vehicle body side, and the rotational force of the drive motor is transmitted to the driving posture adjusting unit by a transmission cable including a torque cable, and the seat position is adjusted. The seating posture of the occupant is adjusted to be suitable for the driving operation by moving the movable floor up and down in correspondence with the adjustment operation of the seat position using the adjusting means.
JP 2006-248447 A

  In the seating posture adjustment apparatus for an automobile disclosed in Patent Document 1, a passenger is seated on a passenger seat by providing a transmission cable for transmitting the rotational force of a drive motor provided in a seat position adjusting means to the driving posture adjustment unit. When the front / rear position of the occupant seat is adjusted by the seat position adjusting means corresponding to the physique, the movable floor on which the heel portion of the foot is placed is moved up and down in conjunction with this operation. Therefore, there is an advantage that the installation height of the movable floor can be adjusted so that the driver sitting on the driver's seat can step on the operation pedal easily and appropriately. Further, as disclosed in Patent Document 1, when the rotational force of the drive motor is transmitted to the driving posture adjusting unit by a transmission cable made of a torque cable, the transmission cable is rotated forward and backward. Thus, it is possible to sufficiently transmit the rotational force of the drive motor in both directions of raising and lowering the movable floor.

  However, the torque cable is composed of a flexible outer cylinder and a shaft body that is rotatably supported by the outer cylinder, and when the outer cylinder and the shaft body are largely bent, There is a characteristic that rotation of the shaft body is easily hindered. For this reason, there is a problem that the degree of freedom in layout when arranging the torque cable is low, and it is difficult to properly arrange the torque cable in a limited space. In addition, when the torque cable is used, when the torque of the drive motor is transmitted to the movable floor via the torque cable to be moved up and down, the drive caused by the torsional deformation of the shaft body. There is a problem that a force transmission delay is likely to occur, it is difficult to move the movable floor portion up and down quickly, and to keep its position stably.

  In view of the above circumstances, an object of the present invention is to provide a driving posture adjusting device that can easily and appropriately adjust the sitting posture of a driver seated on an occupant seat including a driver seat. .

  The invention according to claim 1 is a seat position adjustment mechanism that adjusts the front / rear position by moving a seat cushion portion of an occupant seat including a driver's seat back and forth, and a driver seated on the occupant seat depresses an operation pedal. And a floor lifting mechanism that lifts and lowers the movable floor portion on which the heel portion of the foot is placed, and is configured to raise the movable floor portion in accordance with the forward movement of the seat cushion portion. When the seat cushion portion is moved to the front side of the vehicle body by the seat position adjusting mechanism, the device is provided on the vehicle body side with a pull cable that transmits the driving force as a tensile force to the floor lifting mechanism. A pulling mechanism around which the pull cable is wound, and a base end portion of the pulling cable wound around the winding mechanism extends to the front side of the vehicle body and is connected to the seat cushion portion. Together with the one in which the distal end of the pull cable is connected to the lifting section of the floor elevating mechanism.

  According to a second aspect of the present invention, in the driving posture adjusting apparatus according to the first aspect, the floor elevating mechanism is provided with an urging means for urging the movable floor portion in a lowering direction.

  According to a third aspect of the present invention, in the driving posture adjusting apparatus according to the first or second aspect, the winding pulley has a rotating pulley around which the pull cable is wound so as to be rotatably supported by a seat slide lower rail. In addition to being provided, the base end portion and the tip end portion of the pull cable wound around the rotary pulley are respectively installed so as to extend to the front side of the vehicle body.

  According to a fourth aspect of the present invention, in the driving posture adjusting apparatus according to any one of the first to third aspects, the floor elevating mechanism includes a slide shaft provided in the movable floor portion and extending in the vehicle width direction, And a floor support member provided with a forwardly rising guide groove for slidably supporting both left and right ends of the slide shaft.

  According to a fifth aspect of the present invention, in the driving posture adjusting device according to any one of the first to third aspects, the pulling stroke of the pull cable when the seat cushion portion moves forward in the routing path of the pull cable. Is provided with a speed reduction mechanism that transmits the noise to the floor lifting mechanism.

  According to the first aspect of the present invention, the occupant seat sitting on the occupant seat uses the seat position adjustment mechanism when, for example, the occupant changes from a tall person to a short person such as a female driver. When the vehicle is moved to the front side of the vehicle body, the driving force is transmitted to the lifting portion of the floor lifting mechanism via the pull cable, and the movable floor portion is lifted from the floor lifting mechanism, so that It is possible to automatically adjust the installation height of the movable floor part so that low-profile persons who tend to have shorter sole lengths can put their feet on the operation pedal and properly depress it. it can. And even when the pull cable is bent greatly, the power transmission function is maintained appropriately, so that it can be arbitrarily arranged in a limited space without restricting the degree of freedom of layout. Because there is no delay in transmission of driving force as in the case of using the torque cable, the advantage that the installation height of the movable floor portion can be adjusted quickly and appropriately according to the sole length of the occupant There is.

  In the invention according to claim 2, since the urging means for urging the movable floor portion in the direction to pull down is provided in the floor elevating mechanism, the movable floor portion is quickly displaced to the lower position in accordance with the rearward movement of the seat cushion portion. In addition, it is possible to effectively prevent rattling by holding the movable floor portion biased downward by the biasing means.

  In the invention according to the third aspect, the winding mechanism is provided with a rotating pulley around which the pull cable is wound, and the base end portion and the tip end portion of the pull cable wound around the rotating pulley are respectively extended to the front side of the vehicle body. Therefore, the driving force when the seat cushion portion moves forward can be directly transmitted as a tensile force to the movable floor portion arranged on the front side via the pull cable. There is an advantage that the movable floor portion can be driven up easily and appropriately when the cushion portion moves forward.

  In the invention according to the fourth aspect, since the left and right ends of the slide shaft provided on the movable floor portion are supported so as to be slidable along the upwardly rising guide groove, one of the downward loads acting on the movable floor portion is supported. Can be loaded on the lower side of the guide groove, and the movable floor can be smoothly moved up and down with a light force along the guide groove while preventing an excessive load from acting on the pull cable. Can be made.

  In the invention according to the fifth aspect, the seat position adjustment is performed because the pulling cable routing path is provided with a speed reducing mechanism that reduces the pulling stroke of the pull cable and transmits it to the floor lifting mechanism when the seat cushion portion moves forward. By transmitting the driving force to the floor elevating mechanism without using a large drive motor or the like as a drive source of the mechanism, the movable floor portion can be moved up and down smoothly, and the seat cushion portion There is an advantage that the front / rear stroke and the up / down stroke of the movable floor portion can be properly matched.

  FIG. 1 shows an embodiment of a driving posture adjusting apparatus according to the present invention. The driving posture adjusting device includes a seat position adjusting mechanism 2 that adjusts the front / rear position of a seat cushion portion 1a of an occupant seat 1 including a driver's seat, and a driver seated on the occupant seat 1. The floor member on which the heel of the foot is placed when the operation pedal 3 including an accelerator pedal or a brake pedal is depressed, that is, the upper surface of the vehicle body floor 4 positioned at the foot of the driver seated on the occupant seat 1. And a floor raising / lowering mechanism 6 for raising and lowering the movable floor 5 installed so as to cover the floor.

  The vehicle body floor 4 includes a kick-up portion 8 extending rearward from the lower end portion of the dash panel 7 that divides the engine room and the vehicle compartment, and a rear end portion of the vehicle body continuously from the rear end portion. And a substantially flat floor bottom 9 extending to the side. A conventionally well-known floor trim material (Fig. 2) is provided with an insulator made of felt material or glass wool having sound insulation and heat insulation functions on the upper surface of the vehicle body floor 4 and a surface layer material made of carpet material covering the upper surface. Not shown) is installed.

  As shown in FIG. 2, a floor tunnel portion 10 extending in the front-rear direction of the vehicle body is formed at the center of the vehicle body floor 4. In order to support the floor tunnel portion 10, a side sill (not shown) installed so as to extend in the front-rear direction along the side portion of the passenger compartment, and the front end portion of the passenger seat 1 in the vehicle width direction A pair of left and right floor supports for supporting the left and right side portions of the movable floor portion 5 are provided on a floor bottom portion 9 defined by a cross member 11 installed to extend and a kick-up portion 8 of the vehicle body floor 4. Members 12 and 13 are installed.

  The floor support members 12 and 13 are provided with wall surface portions that rise substantially vertically from the left and right side portions of the floor bottom portion 9, and the front and rear end portions of the wall surface portions have the same angle, for example, the kick-up portion 8 A guide groove 14 that is inclined upward and at an angle corresponding to the inclination angle is formed. A reinforcing plate 15 having a notch corresponding to the guide groove 14 is attached to the inner side surface portions of the floor support members 12 and 13, and a notch corresponding to the guide groove 14 is formed on the bottom portion on the outer side surface portion. A guide member 16 made of a channel material having a U-shaped cross section is attached. Further, fixed brackets 12 a and 13 a that are fixed to the upper surface of the cross member 11 and the like are integrally provided at the rear ends of the floor support members 12 and 13.

  As shown in FIGS. 3 and 4, the movable floor 5 supports a flat board member 18 that constitutes a placement surface on which the occupant's buttocks are placed, and supports the board member 18 so as to be movable up and down. A base member 19 is used. The base member 19 includes an outer peripheral frame member 20 formed by bending a rod-like body into a U-shape, and connecting members 22a and 22b made of a pair of front and rear plate members that connect the left and right side portions thereof. And an outer frame body 23 which is installed and fixed on the outer peripheral frame member 20, and the board member 18 is placed on the outer frame body 23 and the connecting members 22a and 22b, by means such as screws. It is locked.

  Further, the outer peripheral frame member 20 is fixed by welding or the like with a slide shaft 24 extending in the vehicle width direction along the lower surface of the front portion, and the rear end portions of the outer peripheral frame member 20 are connected to each other. A slide shaft 25 extending in the vehicle width direction is fixed by welding or the like. The left and right ends of the slide shafts 24 and 25 protrude to the side of the outer peripheral frame member 20, and the protrusions are inserted into the guide grooves 14 of the floor support members 12 and 13 so as to be slidably supported. It has come to be.

  A front end portion of an urging means 26 made of a tension spring or the like is locked on the left and right of the slide shaft 24 located on the front side of the vehicle body among the slide shafts 24 and 25. The rear end portion is locked to a vehicle body side member including locking protrusions 9 a provided on the floor bottom 9. The urging means 26 is configured to urge the slide shaft 24 toward the rear lower side along the guide groove 14 by pulling the slide shaft 24 obliquely downward. Further, a synthetic resin tube material 27 for suppressing generation of noise during expansion and contraction is attached to the urging means 26 so as to cover the outer peripheral portion.

  5 and 6 show one end portion of the slide shaft 25 located on the rear side of the vehicle body (the end portion located on the outer side in the vehicle width direction in the present embodiment) of the slide shafts 24 and 25. As described above, when the seat cushion portion 1a is moved to the front side of the vehicle body by the seat position adjusting mechanism 2, the driving force is provided at the distal end portion of the pull cable 28 that transmits the driving force to one end portion of the slide shaft 25 as a tensile force. The cable end ring 29 and the driving force transmitted from the pull cable 28 to one end portion of the slide shaft 25 are transmitted to the other end portion (in this embodiment, the end portion located on the center side in the vehicle width direction). The cable end ring 31 provided at the base end portion of the transmission cable 30 is configured to be locked via a locking member 32 and a spacer 33 each made of a hooked screw or the like.

  The pull cable 28 and the transmission cable 30 have outer casings 28a and 30a made of a flexible tube material, and inner wires 28b and 30b slidably supported by the outer casings 28a and 30a. . Then, the inner wire 28b of the pull cable 28 slides along the outer casing 28a in accordance with the driving force input from the seat position adjusting mechanism 2, so that one end portion of the slide shaft 25 is interposed via the inner wire 28b. When the driving force is transmitted to the one end of the slide shaft 25 via the inner wire 28b, the inner wire 30b of the transmission cable slides along the outer casing 30a. The driving force is transmitted to the other end portion of the slide shaft 25 through the inner wire 30b.

  The floor support member 12 located on the outer side of the vehicle body of the pair of left and right floor support members 12 and 13 is engaged with a front end portion (front end portion) of the outer casing 28a of the pull cable 28. A portion 34 is provided on the upper rear side of the floor support member 12, and a guide pulley 35 around which the inner wire 28 b led out from the distal end portion of the outer casing 28 a is wound is provided on the upper front side of the guide member 16. The support shaft 35a is rotatably supported. The inner wire 28b of the pull cable 28 is led out from the lower side of the guide pulley 35 to the upper rear side, and is wound around the guide pulley 35 over 180 ° or more, whereby the upper end portion of the guide member 16 is The tip of the inner wire 28b (cable end ring 29) is guided downward from the bottom. Further, a locking portion 36 is provided at the lower end portion of the guide member 16 to lock the proximal end portion of the outer casing 30 a of the transmission cable 30.

  Of the pair of left and right floor support members 12 and 13, the floor support member 13 positioned on the center side of the vehicle body has a locking portion 39 for locking the tip of the outer casing 30 a of the transmission cable 30. A guide pulley 38 provided at the upper rear side of the floor support member 13 and wound with an inner wire 30b led out from the distal end portion of the outer casing 30a is provided on the upper front side of the guide member 16. It is supported rotatably by. Then, the inner wire 30b of the transmission cable 30 is led out from the lower side of the guide pulley 38 to the upper rear side, and is wound around the guide pulley 38 over 180 ° or more, whereby the upper end portion of the guide member 16 is The tip of the inner wire 30b (cable end ring 31) is guided downward from the bottom.

  In addition, between the guide member 16 and the guide pulleys 35 and 38, the inner wires 28b and 30b of the pull cable 28 and the transmission cable 30 that cross the guide member 16 and are guided to the lower part of the guide pulleys 35 and 38. By restricting the installation position of the inner pulleys 28b and 30b, a regulating portion 99 is provided for making the installation height of the inner wires 28b and 30b coincide with the installation height of the guide pulleys 35 and 38.

  In the above configuration, when the seat cushion portion 1a of the occupant seat 1 is positioned at the rearmost portion of the vehicle body, the urging force of the urging means 26 that urges the slide shafts 24 and 25 downward and the movable floor portion 5 are provided. As shown in FIG. 7, the movable floor portion 5 is locked at the lowermost position according to its own weight. When an operation for moving the seat cushion portion 1a of the occupant seat 1 to the front side of the vehicle body as described later is performed from this state, the driving force is transmitted through the pull cable 28 and the transmission cable 30 to the slide shaft 25. The slide shaft 25 is lifted obliquely upward along the guide groove 14 as shown in FIG. 4, and the movable floor portion 5 rises while moving forward correspondingly. become.

  A pair of left and right seat slide lower rails on the vehicle body floor 4 and the cross member 11 positioned at the installation portion of the occupant seat 1 as shown in FIGS. 41 is installed, and a seat slide upper rail 42 is supported along the seat slide lower rail 41 so as to be slidable. The seat slide lower rail 41 is made of C-type steel or the like having an open upper surface, and the mounting brackets 43 and 44 are integrally joined to both front and rear ends thereof. The mounting brackets 43 and 44 are fixed to the upper surface of the cross member 11 via fastening bolts or the like, so that the seat slide lower rail 41 is installed on the floor bottom 9 in a state where the seat slide lower rail 41 is inclined slightly upward. ing.

  In the left and right seat slide lower rails 41, as shown in FIG. 10, a rotating shaft 45 comprising a screw shaft is rotatably installed, and between the front end portions of the left and right seat slide upper rails 42 is driven. A drive shaft 47 that is rotationally driven by a motor 46 and a support member 48 that rotatably supports the drive shaft 47 are installed so as to extend in the vehicle width direction. Further, at both left and right end portions of the drive shaft 47, there are provided power transmission portions 49 including a bevel gear mechanism or a worm wheel gear for transmitting the drive force to the rotation shaft 45.

  The seat slide lower rail 41, the seat slide upper rail 42, the rotary shaft 45, the drive motor 46, the drive shaft 47, and the power transmission portion 49, and a nut block fixed to the bottom of the seat slide lower rail 41 and screwed into the rotary shaft 45 A seat position adjusting mechanism 2 that slides and displaces the seat slide upper rail 42 along the seat slide lower rail 41 and moves the seat cushion portion 1a of the occupant seat 1 back and forth by 41a. It is configured.

  That is, when a forward switch (not shown) is operated, a control signal for normal rotation of the drive motor 46 is output, and when the drive motor 46 rotates forward in response to the control signal, the seat cushion portion 1a is advanced. A driving force in the direction is transmitted to the drive shaft 47, the power transmission unit 49 and the rotation shaft 45. The rotating shaft 45 is supported by a nut block 41a fixed to the bottom of the seat slide lower rail 41, and is rotationally driven by the driving force input from the power transmission portion 49 and screwed forward to the vehicle body. As a result, the seat cushion portion 1a of the occupant seat 1 is driven together with the seat slide upper rail 42 to the front side of the vehicle body.

  On the other hand, when a reverse switch (not shown) is operated, a control signal for reversely rotating the drive motor 46 is output, and when the drive motor 46 reverses in response to the control signal, the seat cushion portion 1a is retracted. Is transmitted to the drive shaft 47, the power transmission unit 49, and the rotary shaft 45, and the rotary shaft 45 is driven in reverse to be screwed to the rear side of the vehicle body. The seat cushion portion 1a of the seat 1 is driven to the rear side of the vehicle body.

  The seat slide upper rail 42 is provided with a seat elevating mechanism 50 that moves the seat cushion portion 1a of the occupant seat 1 up and down. As shown in FIGS. 8 and 9, the seat elevating mechanism 50 is installed on the upper surface of the front part of the cushion frame 51 and the seat slide upper rail 42 provided on the left and right sides of the seat cushion portion 1a. A front bracket 52 and a front link 53 that support the front end portion of the frame 51, a rear bracket 54 that is installed on the rear upper surface of the seat slide upper rail 42 and supports the rear portion of the cushion frame 51, and a triangular rear link 55, a connecting shaft 56 that connects the rear end portions of the left and right rear links 55 and the rear lower ends of the cushion frames 51, and an upper surface of the center portion of the seat slide upper rail 42 to be attached to the rear links 55. A central link 57 for transmitting a driving force and a central bracket 58 for supporting the central link 57; Serial and connecting link 59 which the upper portion of the central link 57 connected to the front end portion of the rear link 55, following the drive shaft 60, and a drive lever 61 and the elevation drive unit 62.

  The central link 57 is fixed to a drive shaft 60 whose lower end extends in the vehicle width direction, and is rotatably supported by the central bracket 58 via the drive shaft 60. A drive lever 61 is fixed to the drive shaft 60 so as to rotate and displace the drive shaft 60. The central bracket 58 provided on one of the pair of left and right seat slide upper rails 42 (outward in the vehicle width direction) has an elevating drive unit 62 that drives the drive lever 61 fixed to the drive shaft 60. Is provided.

  As shown in FIGS. 11 and 12, the elevating drive unit 62 includes a screw shaft 64 having a front end portion connected to a distal end portion (lower end portion) of the drive lever 61 via a connection pin 63, and the screw shaft 64. And a guide bracket 67 fixed to the front surface of the gear mechanism 66, and a base end portion of the guide bracket 67 is connected to the central bracket 58 via a support bracket 68. It is supported by. The gear mechanism 66 is provided with a worm gear 69 fixed to the output shaft 65a of the drive motor 65, and a worm nut 70 that is rotationally driven by the worm gear 69. A screw hole that is screwed into the shaft 64 is formed.

  Then, as the worm nut 70 is rotationally driven by the driving force input from the drive motor 65 through the worm gear 69, the screw shaft 64 screwed to the worm nut 70 is rotated and screw-fed. It has become so. As the screw shaft 64 is screwed, the connecting pin 63 provided at the tip of the screw shaft 64 moves back and forth along the support groove 71 formed in the guide bracket 67, and the driving force thereof is connected to the connecting pin 63. By being transmitted to the drive lever 61 via this, the drive lever 61 is oscillated and displaced, and the drive shaft 60 is rotationally driven.

  Further, as the drive shaft 60 is rotationally driven, the central link 57 is oscillated and displaced, and the driving force is transmitted to the rear link 55 via the connecting link 59, and the rear link 55 is oscillated. The seat cushion portion 1a is configured to be moved up and down by moving and displacing the front link 53 correspondingly. That is, in the state where the seat cushion portion 1a of the occupant seat 1 is located on the rear side of the vehicle body, the front link 53 and the center link 57 are tilted rearward as shown in FIG. Since the connecting shaft 56 provided at the rear end of the seat cushion is positioned downward, the seat surface of the seat cushion portion 1a is held in a downward position.

  In the above configuration, when the seat cushion portion 1a of the occupant seat 1 located at the rear portion of the vehicle body is driven to the front side of the vehicle body by the seat position adjusting mechanism 2, the drive motor of the seat lifting mechanism 50 correspondingly corresponds to this. A control signal for driving forward rotation of 65 is output from a control means (not shown), and the forward drive force of the drive motor 65 is transmitted via the gear mechanism 66, screw shaft 64, connecting pin 63, drive lever 61 and drive shaft 60. Is transmitted to the central link 57, and the central link 57 shifts from the rearward tilted state to the standing state as shown in FIG. Then, as the central link 57 shifts to the standing state, the driving force is transmitted to the rear link 55 via the connecting link 59, and the front end portion of the rear link 55 is pulled to the front side of the vehicle body. The connecting shaft 56 provided at the rear end portion of the rear link 55 is raised, and the rear end portion of the seat cushion portion 1a is driven to be pushed up accordingly.

  In addition, since the front link 53 shifts from the rearward tilted state to the standing state in conjunction with the swinging displacement of the rear link 55, the front end portion of the seat cushion portion 1a is pushed up and moved forward accordingly. The seat cushion portion 1a is displaced from the lower position to the upper position shown in FIG. Further, in this embodiment, the upper movement amount of the rear end portion is set larger than the upper movement amount of the front end portion of the seat cushion portion 1a. The inclination angle of the surface is configured to be gradually reduced.

  As shown in FIGS. 14 to 16, the seat slide lower rail 41 of the occupant seat 1 has a rear portion of the pull cable 28 led out from the installation portion of the floor lifting mechanism 6 to the rear side through the cross member 11. (Inner wire 28b) is wound, and a winding mechanism 72 that reduces the pulling stroke of the pull cable 28 and transmits it to the floor lifting mechanism 6 when the seat cushion portion 1a moves forward, and the pull cable 28 An adjustment mechanism 89 that removes the slack and applies a predetermined tension to the inner wire 28b and finely adjusts the installation height of the movable floor portion 5 by manual operation is provided.

  The winding mechanism 72 includes a pair of front and rear mounting brackets 73 fixed to the seat slide lower rail 41, and a support plate erected on the side portion of the seat slide lower rail 41 with both front and rear ends fixed to the mounting bracket 73. 74, a support shaft 75 projecting from the rear end portion of the support plate 74, a large-diameter pulley 76 rotatably supported by the support shaft 75, and the large-diameter pulley 76 so as to rotate together. A small-diameter pulley 77 coupled to the support plate 74, and a locking portion 78 for locking the base end portion (rear end portion) of the outer casing 28a of the pull cable 28 is provided at the front end portion of the support plate 74. It has been. An inner wire 28b led out from the base end portion of the outer casing 28a locked to the locking portion 78 to the rear side of the vehicle body is wound around the small-diameter pulley 77 and provided at the base end portion of the inner wire 28b. The T-shaped end fitting 28c is locked to the outer peripheral portion of the small-diameter pulley 77. A driving wire 79 is wound around the large-diameter pulley 76, and a T-type end fitting 79a provided at one end thereof is locked to the outer peripheral portion of the large-diameter pulley 76. .

  The other end of the drive wire 79 is installed so as to extend to the front side of the vehicle body by being introduced into a guide member 80 made of C-section steel or the like attached to the upper surface of the support plate 74. A slide block 81 is disposed in the guide member 80 and is slidably supported. The slide block 81 is formed with an engagement hole 81a into which a drive pin 83 projecting sideward from the central bracket 58 attached to the upper surface of the seat slide upper rail 42 is fitted. A locking hole for locking a T-shaped end fitting 79b provided at the other end of the drive wire 79 is formed.

  The drive pin 83 of the seat slide upper rail 42 is fitted into the engagement hole 81a of the slide block 81, so that the base end portion of the pull cable 28 is connected to the drive wire 79, the drive pin 83, and the seat slide upper. It is connected to the seat cushion part 1a via a rail 42 or the like. When the seat cushion portion 1a is moved forward, the driving force is converted into the pulling force of the inner wire 28b of the pull cable 28, and the pulling stroke has the large-diameter pulley 76 and the small-diameter pulley 77. It is configured to be transmitted to the floor elevating mechanism 6 by being reduced by a speed reducing mechanism 72.

  That is, when the seat cushion portion 1a moves to the front side of the vehicle body by the seat position adjusting mechanism 2, the slide block 81 moves correspondingly to the front side of the vehicle body along the guide member 80, and the drive wire The other end portion 79 (T-type end fitting 79b) is pulled toward the front side of the vehicle body, and the large-diameter pulley 76 is rotationally driven in the counterclockwise direction (arrow α direction) in FIG. When the large-diameter pulley 76 rotates, the small-diameter pulley 77 also rotates by the same angle. Therefore, the pulling stroke of the drive wire 79 is reduced at a reduction rate corresponding to the diameter ratio between the pulleys 76 and 77, and the pull cable 28 is pulled. Is transmitted to the inner wire 28b. As a result, a driving force in the direction of pulling the inner wire 28b from the outer casing 28a of the pull cable 28 to the rear side of the vehicle body (in the direction of the arrow β) acts. Thus, the movable floor portion 5 is driven to rise by the slide shafts 24 and 25 being slid obliquely upward along the guide groove 14.

  On the other hand, the adjusting mechanism 89 includes a holding means 84 made of a ratchet device or the like provided on the inner wall surface of the support plate 74, an operation lever 85 having a drive shaft 85a fitted to the drive part of the holding means 84, A swing arm 86 that is detachably locked to the drive shaft 85a of the operation lever 85, a dancer pulley 87 supported at the tip of the swing arm 86, and an installation portion such as the swing arm 86 are covered. And a protective cover 88.

  When the driving posture adjusting device is assembled to the vehicle body, the inner wire 28b of the pull cable 28, the operating lever 85, the swing arm 86, and the like are integrally incorporated in the protective cover 88, and these are the seat position adjusting mechanism. 2 and the seat position adjusting mechanism 2 and the floor elevating mechanism 6 are installed, and then the drive shaft 85a of the operation lever 85 is fitted into the drive portion of the holding means 84. Further, a T-type end fitting 28c provided at the proximal end portion of the inner wire 28b led out to the rear side of the vehicle body via the dancer pulley 87 is locked to the outer peripheral portion of the small-diameter pulley 77, and the protective cover 88 is provided. Is screwed to the outer wall surface of the support plate 74, etc., via the pull cable 28 and the drive wire 79, and a speed reduction mechanism comprising the winding mechanism 72 having the large diameter pulley 76 and the small diameter pulley 77, etc. The slide shaft 25 of the floor lifting mechanism 6 is connected to the seat cushion portion 1a.

  When a predetermined tension is applied to the inner wire 28b by removing the slack of the pull cable 28 using the adjusting mechanism 89, the tip of the operating lever 85 is shown as shown by an arrow γ in FIGS. The swinging arm 86 is swung in the direction in which the dancer pulley 87 is lifted by swinging in the direction of lowering the part, and the swinging angle of the operating lever 85 is adjusted by the holding means 84 including the ratchet device or the like. Hold. As a result, the inner wire 28b of the pull cable 28 is held in a predetermined position via the dancer pulley 87, and a tension corresponding to the lifting force is applied to the inner wire 28b.

  Further, when the operation lever 85 is swung in the direction in which the dancer pulley 87 is raised, a driving force in a direction of pulling the inner wire 28b to the rear side of the vehicle body acts from the rear end portion of the outer casing 28a. By being transmitted to the lifting portion of the floor lifting mechanism 6 comprising the slide shaft 25, the movable floor portion 5 is driven to rise, and its installation height is finely adjusted by manual operation. That is, the movable floor portion 5 moves obliquely upward when the slide shaft 25 is pulled up along the guide groove 14 in accordance with the driving force input to the slide shaft 25 from the inner wire 28b of the pull cable 28. Then, the installation height is finely adjusted.

  When the tension applied to the pull cable 28 via the adjusting mechanism 89 is reduced, or when the installation height is finely adjusted manually in the direction in which the movable floor portion 5 is lowered, the holding is not shown. By operating the release lever, the holding force of the swing arm 86 by the holding means 84 is released. As a result, the push-up force of the inner wire 28b by the dancer pulley 87 is released, and the tension applied to the inner wire 28b is reduced. Further, by swinging and moving the swing arm 86 in the direction of lowering the dancer pulley 87 by swinging in the direction of raising the tip of the operation lever 85, the tension applied to the inner wire 28b is When further reduced, the tensile force transmitted to the lifting portion composed of the slide shaft 25 of the floor lifting mechanism 6 becomes zero, so that the slide shaft 24 moves into the guide groove 14 according to the urging force of the urging means 26. The installation height is finely adjusted so that the movable floor portion 5 is lowered along the lower side.

  As described above, the seat cushion portion 1a of the occupant seat 1 including the driver's seat is moved back and forth to adjust the front / rear position, and the driver seated on the occupant seat 1 operates the operation pedal 3. A floor elevating mechanism 6 that elevates and lowers the movable floor 5 on which the heel portion of the foot is placed when stepping on, and is configured to raise the movable floor 5 in accordance with the forward movement of the seat cushion 1a. In the driving posture adjusting apparatus, when the seat cushion portion 1a is moved to the front side of the vehicle body by the seat position adjusting mechanism 2, a pull cable 28 for transmitting the driving force to the floor lifting mechanism 6 as a tensile force, and a seat slide And a winding mechanism 72 around which the pull cable 28 is wound. The winding mechanism 72 is disposed on a vehicle body side member including the lower rail 41 and the like. Further, the base end portion of the pull cable 28 is extended to the front side of the vehicle body and connected to the seat cushion portion 1a, and the front end portion of the pull cable 28 is connected to the lifting portion of the floor lifting mechanism 6, so that There is an advantage that the seating posture of the driver seated on the seat 1 can be adjusted easily and appropriately.

  That is, when a tall occupant is seated on the occupant seat 1 including the driver's seat, the seat cushion portion 1a of the occupant seat 1 is positioned on the rear side of the vehicle body as shown in FIG. An operation arranged in front of the occupant seat 1 by aligning the line of sight of the occupant seated on the seat 1 with an appropriate line and positioning the movable floor portion 5 downward as shown in FIG. The movable floor portion 5 is aligned so that the pedal 3 can be properly depressed. From this state, when the occupant seated on the occupant seat 1 changes from a tall person to a short person, such as a female driver, the seat position adjusting mechanism 2 is used to move the occupant seat 1 to the front side of the vehicle body. In this case, the driving force is transmitted to the lifting portion of the floor lifting mechanism 6 via the pull cable 28, and the movable floor portion 5 is lifted from the floor lifting mechanism 6. Therefore, a short stature person who tends to have a shorter sole length than a tall person can put the foot on the operation pedal 3 composed of the accelerator pedal or the brake pedal and properly depress it. By automatically adjusting the installation height of the movable floor portion 5, there is an advantage that the operability of the operation pedal 3 can be properly maintained even when the physique of the driver changes.

  Further, the pull cable 28 has a drawback such as a torque cable that transmits a driving torque in accordance with the rotation of the shaft core that is rotatably supported by the outer cylinder, that is, when the torque cable is largely bent, There is no drawback that it is difficult to transmit torque due to the obstruction of the rotation of the body, and the driving force can be transmitted smoothly even if it is bent greatly in a limited space. There is an advantage that a sufficient degree of freedom can be secured and arranged arbitrarily. Moreover, by sliding the inner wire 28b along the outer casing 28a of the pull cable 28, the driving force can be directly transmitted to the lifting portion of the movable floor portion 5, and thus the torque cable is used. As in the case, the transmission delay of the phase due to the torsional deformation of the shaft body disposed in the outer cylinder does not occur, and the installation height of the movable floor portion 5 depends on the sole length of the occupant. There is an advantage that the thickness can be adjusted quickly and appropriately.

  When the occupant seated on the occupant seat 1 changes from a short stature to a high stature and the seat position adjustment mechanism 2 moves the seat cushion portion 1a of the occupant seat 1 to the rear side of the vehicle body. Since the pulling force of the movable floor portion 5 by the pull cable 28 is released, the movable floor portion 5 is automatically displaced to the lower position according to its own weight even if the urging means 26 is omitted. Is possible. However, as shown in the above embodiment, when the floor elevating mechanism 6 is provided with the urging means 26 for urging the movable floor portion 5 in the pulling-down direction, the movable floor portion is moved when the seat cushion portion 1a is moved backward. 5 can be quickly displaced to the lower position, and by holding the movable floor portion 5 at the lower position in accordance with the urging force of the urging means 26, it is possible to effectively prevent rattling. There is.

  Further, as shown in the above-described embodiment, the rear end portion of the urging means 26 that urges the slide shaft 24 of the movable floor portion 5 downward is a vehicle body made up of a locking protrusion or the like provided on the floor bottom portion 9. When locked to the side member, the urging force to the rear side of the vehicle body input from the urging means 26 to the floor support members 12 and 13 through the ride shaft 24 and the slide cable 25 from the pull cable 28 are provided. Since the urging force to the front side of the vehicle body input to the floor support members 12 and 13 through the balance can be balanced, the urging force biased toward the fixed portion of the floor support members 12 and 13 with respect to the floor bottom 9 is obtained. There is an advantage that it is possible to effectively prevent the mounting state of the floor support members 12 and 13 from becoming unstable due to the action.

  In other words, the rear end portion of the urging means 26 can be locked to the floor support members 12 and 13, but in this case, the urging means 26 is input via the slide shaft 24. The urging force to the rear side of the vehicle body does not act on the fixing portion of the floor support members 12 and 13, and only the urging force to the front side of the vehicle body input from the pull cable 28 via the slide shaft 25 is applied. This acts on the fixed portions of the floor support members 12 and 13. On the other hand, as shown in the above embodiment, when the rear end portion of the urging means 26 is locked to the vehicle body side member comprising the floor bottom 9, the urging force of the urging means 26 and the pull cable 28 are applied. Therefore, it is possible to prevent biased biasing forces from acting on the fixed portions of the floor support members 12 and 13 with respect to the floor bottom portion 9.

  Further, as shown in the embodiment, the pulling cable 28, specifically the inner wire 28b, is supported by the winding mechanism 72 so as to be rotatable by the seat slide lower rail 41 that slidably supports the seat cushion portion 1a. And a rotating pulley comprising a large-diameter pulley 76 and a small-diameter pulley 77 around which the drive wire 79 is wound, and a base end portion and a distal end portion of the pull cable 28 wound around the rotating pulley extend to the front side of the vehicle body. In this case, the driving force when the seat cushion portion 1a moves forward is directly transmitted as the tensile force to the movable floor portion 5 disposed on the front side via the pull cable 28. Since the movable floor portion 5 can be driven up easily and properly when the seat cushion portion 1a moves forward, Cormorants has the advantage.

  In addition, since the drive wire 79 can be mounted in the vehicle interior together with the seat slide lower rail 41 in a state in which the drive wire 79 is previously engaged with the rotary pulley including the large-diameter pulley 76, the assembly work can be easily performed. Is possible. Further, after the occupant seat 1 is installed, the T-type end fitting 28c provided at the proximal end portion of the inner wire 28b that transmits the driving force to the floor lifting mechanism 6 is locked to the outer peripheral portion of the small-diameter pulley 77. Thus, the pull-up portion made of the slide shaft 25 of the floor lifting mechanism 6 is connected to the seat cushion portion 1a via the pull cable 28 having the inner wire 28b and the speed reduction mechanism made up of the large-diameter pulley 76 and the small-diameter pulley 77. That is, the operation of connecting the drive unit of the floor lifting mechanism 6 and the drive unit of the seat position adjusting mechanism 2 can be easily performed.

  Furthermore, as shown in the above embodiment, the left and right end portions of the slide shafts 24 and 25 provided in the movable floor portion 5 extending in the vehicle width direction extend along the forwardly rising guide grooves 14 provided in the floor support member 13. When slidably supported, a part of the downward load acting on the movable floor portion 5, that is, a part of the load acting on the movable floor portion 5 due to the occupant's feet being placed, etc. Therefore, an excessive load is prevented from acting on the pull cable 28, so that the movable floor portion 5 is stably supported and the movable floor portion 5 is supported by the guide. There is an advantage that it can be smoothly moved up and down along the groove 14 with a light force. That is, while supporting the slide shafts 24 and 25 of the movable floor portion 5 by the guide groove 14, the slide shaft 25 is moved to the guide groove according to the driving force input to the slide shaft 25 from the inner wire 28b of the pull cable 28. By pulling up along 14, the movable floor portion 5 can be smoothly moved up and down.

  Instead of the above-described embodiment in which the guide groove 14 is inclined forward and upward, a structure in which the guide groove is inclined backward and upward can be employed. However, when the guide groove 14 is inclined forwardly upward as described above and the inclination angle is set to a value corresponding to the inclination angle of the dash panel 7 provided below the front part of the passenger compartment, When the movable floor portion 5 is displaced up and down from the upper position shown in FIG. 4 to the lower position shown in FIG. 7 by sliding and displacing the slide shafts 24 and 25 of the movable floor portion 5 along the guide groove 14, Since the distance between the dash panel 7 and the front end portion of the movable floor portion 5 can be maintained constant, there is an advantage that it is possible to prevent the occupant from feeling uncomfortable because the distance becomes larger than necessary.

  In the above embodiment, the inner wire 28b of the pull cable 28 is guided to the installation portion of the slide shaft 25 by the guide pulley 35 and locked to one end portion of the slide shaft 25, and one end portion of the slide shaft 25; Since the transmission cable 30 for connecting to the other end portion is provided and the driving force transmitted through the inner wire 28b is transmitted to the other end portion of the slide shaft 25 by the transmission cable 30, the above configuration is simplified. The left and right ends of the slide shaft 25 can be simultaneously driven to smoothly move the movable floor portion 5 up and down.

  Further, as shown in the above embodiment, the holding means 84 including a ratchet device provided on the inner wall surface portion of the support plate 74 that supports the left and right side portions of the movable floor portion 5, and the drive portion of the holding means 84 An operation lever 85 having a drive shaft 85 a to be fitted, a swing arm 86 detachably supported by the drive shaft 85 a of the operation lever 85, and a dancer pulley 87 supported by the tip of the swing arm 86. And an adjustment mechanism 89 having a protective cover 88 that covers the installation portion of the swing arm 86 and the like, and the swing arm 86 is swing-displaced by the operation lever 85 to loosen the inner wire 28b of the pull cable 28. When it is configured to be removed and applied with a predetermined tension, the occurrence of rattling due to the occurrence of slack in the inner wire 28b is prevented. There is an advantage that the tensile force of the pull cable 28 can be properly transmitted to the lifting section of the floor lifting mechanism 6. In addition, the operating lever 85 is swung in the direction in which the dancer pulley 87 is raised, and the driving force in the direction in which the inner wire 28b is pulled out from the outer casing 28a to the rear side of the vehicle body is applied. There is an advantage that the installation height of the movable floor portion 5 can be finely adjusted by manual operation by being transmitted to the lifting portion (slide shaft 25) of the floor lifting mechanism 6.

  It is configured that the inner wire 28b of the pull cable 28 is pushed up by oscillating and displacing the tip of the swing arm 86 in the direction of raising in accordance with the swing operation in the direction of lowering the tip of the operation lever 85. In place of the above-described embodiment, as shown in FIG. 17, as the tip of the operating lever 85 is swung in the direction of raising, the tip of the swing arm 86 is swung in the direction of lowering. By pushing down the inner wire 28b of the pull cable 28, a predetermined tension may be applied to the inner wire 28b, and the installation height of the movable floor portion 5 may be raised manually. When configured in this way, the operation direction of the operation lever 85 and the up-and-down direction of the movable floor portion 5 can be matched, so when adjusting the installation height of the movable floor portion 5, There is an advantage that it is easy to sensuously know which direction the operation lever 85 should be operated.

  Further, as shown in FIGS. 18 and 19, dancer pulleys 87a and 87b may be rotatably supported at both ends of a swing arm 86a that is detachably supported by the drive shaft 85a of the operation lever 85, respectively. Good. Then, the inner lever 28b of the pull cable 28 is moved by oscillating the operating lever 85, oscillating and displacing one of the dancer pulleys 87a and 87b upward and oscillating the other downward. Since it can be deformed into an S shape and a large tension can be applied, there is an advantage that the installation height of the movable floor portion 5 can be largely adjusted according to the operation of the operation lever 85.

  Furthermore, in the above embodiment, a speed reduction mechanism including the winding mechanism 72 including the large diameter pulley 76 and the small diameter pulley 77 is provided in the routing path of the pull cable 28, and the pull cable is moved when the seat cushion portion 1a moves forward. 28, the pulling stroke of 28 is reduced according to the diameter ratio of the large-diameter pulley 76 and the small-diameter pulley 77 and transmitted to the floor elevating mechanism 6. Therefore, the driving motor 46, which is the driving source of the seat position adjusting mechanism 2, is provided. By transmitting the driving force to the floor elevating mechanism 6 without using a large size, the movable floor portion 5 can be moved up and down smoothly, and the front and rear strokes of the seat cushion portion 1a and the movable floor portion 5 lift strokes can be properly matched.

  For example, when the diameter ratio between the large-diameter pulley 76 and the small-diameter pulley 77 is set to 2: 1, the front / rear stroke of the seat cushion portion 1a is reduced to 1/2 and the tensile driving force is doubled. Then, it is transmitted to the raising portion of the movable floor portion 5. Further, when the inclination of the guide groove 14 is set to 45 °, the pulling stroke of the pull cable 28 is further reduced to about 1 / 1.41 and converted to the lifting stroke of the movable floor portion 5. Therefore, in the driving posture adjustment apparatus in which the front / rear stroke of the seat cushion portion 1a is set to 200 mm, the movable floor portion 5 is made to move to the soles of tall and short stature in accordance with the back-and-forth movement of the seat cushion portion 1a. By moving up and down by about 70 mm, which is a value corresponding to the difference in length, the front and rear stroke of the seat cushion portion 1a can be made to correspond appropriately to the up and down stroke of the movable floor portion 5.

  Note that the winding mechanism 72 of the pull cable 28 provided on the seat slide lower rail 41, specifically, the large-diameter pulley 76 and the small-diameter pulley 77 is replaced with the above-described embodiment, and the above-described winding mechanism. 72 is provided with a single rotating pulley (not shown), and the pull cable 28 and the inner wire 28b are wound around the rotating pulley, and the pulling located below the movable floor portion 5 as shown in FIGS. It is good also as a structure where the speed-reduction mechanism 90 provided with the fixed pulley 91 and the moving pulley 92 was arrange | positioned in the routing path | route of the cable 28. FIG.

  The speed reduction mechanism 90 includes a fixed pulley 91 rotatably supported by a support shaft 91a erected on the floor bottom 9 at a front portion of the vehicle interior, and a support shaft 92a protruding from the back surface of the movable floor portion 5. A movable pulley 92 that is rotatably supported, a locking portion 93 that is fixed to the floor bottom 9 and locks the front end portion of the outer casing 28a of the pull cable 28, and that is led out from the front end portion of the outer casing 28a. First and second restricting portions 94 and 95 that restrict the installation height of the inner wire 28b wound around the fixed pulley 91, and a third restriction that restricts the installation height of the inner wire 28b wound around the movable pulley 92. And a locking portion 97 that locks the distal end portion of the inner wire 28b led out from the moving pulley 92 to the front side of the vehicle body.

  When the seat cushion portion 1a of the occupant seat 1 including the driver's seat is moved to the front side of the vehicle body by the seat position adjusting mechanism 2, the inner wire 28b led forward from the outer casing 28a of the pull cable 28 is used. When a driving force in the direction of pulling to the rear side of the vehicle body is input, this driving force is converted into a direction for moving the moving pulley 92 to the front side of the vehicle body via the fixed pulley 91. Accordingly, a driving force in a direction in which the slide shafts 24 and 25 are lifted along the guide grooves 14 against the urging force of the urging means (not shown) is applied, and according to the forward movement of the seat cushion portion 1a. The movable floor portion 5 can be raised, and when the movable floor portion 5 is raised, the pulling stroke of the pull cable 28 is halved by the movable pulley 92 serving as a moving pulley. The tensile force can be doubled and transmitted to the movable floor portion.

  Therefore, the movable floor portion 5 can be smoothly moved up and down by transmitting the driving force to the floor lifting mechanism 6 without using a large drive source for the seat position adjusting mechanism 2. The front / rear stroke of the seat cushion portion 1a and the up / down stroke of the movable floor portion 5 can be appropriately matched according to the diameter ratio of the large diameter pulley 76 and the small diameter pulley 77 and the inclination angle of the guide groove 14. . In addition, since the speed reduction mechanism 90 including the fixed pulley 91 and the moving pulley 92 can be disposed and concealed below the movable floor portion 5, it is possible to prevent the speed reduction mechanism from being exposed to the vehicle interior and losing appearance. There is an advantage.

  Moreover, in the said embodiment, it comprised so that the said seat cushion part 1a might be electrically moved back and forth by providing the drive motor 46 in the seat position adjustment mechanism 2 which moves the seat cushion part 1a of the passenger | crew's seat 1 back and forth. As described above, the manual operation using the drive lever, or the occupant seated on the occupant seat 1 moves the body back and forth to move the seat cushion portion 1a back and forth along the seat slide lower rail 41, and You may comprise so that the said driving force may be transmitted to the raising part of the floor raising / lowering mechanism 6 via a pull cable.

It is explanatory drawing which shows embodiment of the driving posture adjustment apparatus which concerns on this invention. It is a perspective view which shows the specific structure of a floor raising / lowering mechanism. It is a perspective view which shows the specific structure of a movable floor part. It is side surface sectional drawing which shows the specific structure of a floor raising / lowering mechanism. It is a disassembled perspective view which shows the specific structure of a winding mechanism. It is the sectional view on the AA line of FIG. FIG. 5 is a view corresponding to FIG. 4 showing a state where the movable floor is lowered. It is a side view which shows the specific structure of a sheet | seat position adjustment mechanism. It is a perspective view which shows the specific structure of a sheet | seat position adjustment mechanism. It is the BB sectional drawing of FIG. It is side surface sectional drawing which shows the specific structure of the raising / lowering drive part of a seat cushion part. It is side surface sectional drawing which shows the specific structure of the said raising / lowering drive part. FIG. 5 is a view corresponding to FIG. 4 showing a state in which the seat cushion is moved to the front side of the vehicle body. It is side surface sectional drawing which shows specific structures, such as a winding mechanism. It is a disassembled perspective view which shows specific structures, such as a winding mechanism. It is CC sectional view taken on the line of FIG. It is side surface sectional drawing which shows another specific example of the adjustment mechanism of a movable floor part. It is side surface sectional drawing which shows another specific example of the adjustment mechanism of a movable floor part. It is side surface sectional drawing which shows the operating state of the said adjustment mechanism. It is side surface sectional drawing which shows another specific example of a floor raising / lowering mechanism. It is a plane sectional view showing the composition of the floor raising and lowering mechanism. It is FIG. 21 equivalent view which shows the state which moved the said movable floor part to the front upper part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat for passenger | crew 1a Seat cushion part 2 Seat position adjustment mechanism 3 Operation pedal 5 Movable floor part 6 Floor raising / lowering mechanism 14 Guide groove 24 Slide shaft 25 Slide shaft (lifting part)
26 Biasing means 28 Pull cable 72 Winding mechanism (deceleration mechanism)
76 Large-diameter pulley (rotary pulley)
77 Small-diameter pulley (rotary pulley)
90 Deceleration mechanism

Claims (5)

  A seat position adjustment mechanism that adjusts the front / rear position by moving the seat cushion part of the occupant seat consisting of the driver's seat back and forth, and when the driver sitting on the occupant seat depresses the operation pedal, And a floor raising / lowering mechanism for raising and lowering the movable floor portion to be placed, and a driving posture adjusting device configured to raise the movable floor portion according to a forward movement of the seat cushion portion, wherein the seat position When the seat cushion part is moved to the front side of the vehicle body by the adjustment mechanism, a pull cable that transmits the driving force as a tensile force to the floor lifting mechanism and a winding that is disposed on the vehicle body side and is wound around the pull cable. And a base end portion of the pull cable wound around the winding mechanism extends to the front side of the vehicle body and is connected to the seat cushion portion. Driving posture adjusting device tip of the cable is characterized in that it is connected to the lifting section of the floor elevating mechanism.   2. The driving posture adjusting apparatus according to claim 1, wherein the floor elevating mechanism is provided with urging means for urging the movable floor portion in a direction to lower the movable floor portion.   The winding mechanism includes a rotary pulley that is rotatably supported by a seat slide lower rail and on which the pull cable is wound, and a base end portion and a tip end portion of the pull cable wound on the rotary pulley are respectively provided on the vehicle body. The driving posture adjusting device according to claim 1, wherein the driving posture adjusting device is installed so as to extend forward.   The floor lifting mechanism includes a slide shaft provided in the movable floor portion and extending in the vehicle width direction, and a floor support member provided with a front rising guide groove that slidably supports both left and right ends of the slide shaft. The driving posture adjusting device according to any one of claims 1 to 3, wherein the driving posture adjusting device is provided.   The speed reduction mechanism which reduces the pull stroke of the said pull cable at the time of the front movement of a seat cushion part, and is transmitted to a floor raising / lowering mechanism is provided in the routing route of the said pull cable. The driving posture adjusting device according to claim 1.

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