JP5148180B2 - Driving posture adjustment device - Google Patents

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. A driving posture adjusting device including a floor lifting mechanism that lifts and lowers the movable floor portion on which the heel portion of the foot is placed, and the driving force for moving the seat cushion portion back and forth by the seat position adjusting mechanism A pull cable that is transmitted to the lifting portion of the floor lifting mechanism to drive the movable floor portion, and a cable pulling mechanism that takes out the driving force as the pulling force of the pull cable when the seat cushion portion is moved forward; and a speed reduction mechanism for transmitting to the floor lifting mechanism to reduce the traction stroke of the pull cable, the speed reduction mechanism, Shitoku A large-diameter pulley that is rotationally driven by a pull cable during forward movement of the motion section, and a small-diameter pulley that is rotationally driven in synchronization with the large-diameter pulley, and depending on the diameter ratio of the large-diameter pulley and the small-diameter pulley, It is comprised so that the traction stroke transmitted to the raising part of a floor raising / lowering mechanism via a pull cable may be reduced .

The invention according to claim 2 is the driving posture adjusting device according to the claim 1, said speed reduction mechanism, in which is disposed in the installation portion of the occupant's seat.

The invention according to claim 3 is a seat position adjustment mechanism that adjusts the front / rear position by moving the seat cushion portion of the occupant seat including the driver's seat back and forth, and the driver seated on the occupant seat depresses the operation pedal. Floor that moves up and down the movable floor on which the heel of the foot is placed
A driving posture adjusting device including an elevating mechanism, wherein the driving force for moving the seat cushion portion back and forth by the seat position adjusting mechanism is transmitted to the lifting portion of the floor elevating mechanism to drive the movable floor portion up. A pull cable that pulls the driving force as the pulling force of the pull cable when the seat cushion part moves forward, and a speed reduction mechanism that reduces the pulling stroke of the pull cable and transmits it to the floor lifting mechanism. comprising a said floor lifting mechanism moves the movable floor portion in the longitudinal direction of the vehicle body in response to traction force transmitted through the pull cable, is configured to vertically driving the movable floor portion in conjunction with this And the speed reduction mechanism includes a moving pulley supported on the movable floor portion and a fixed pulley supported on the vehicle body side. For example, the pull cable having one end fixed to the vehicle body, in which is routed so as to be led to the installation of the cable pull mechanism wound around in the order of the moving pulley and the fixed pulley.

According to a fourth aspect of the present invention, in the driving posture adjusting apparatus according to the third aspect , the speed reduction mechanism is disposed below the movable floor portion.

  In the invention according to claim 1, when the occupant sitting on the occupant seat changes from a tall person to a short person, such as a female driver, the occupant seat is mounted on the vehicle body using the seat position adjusting mechanism. When it is moved forward, the driving force is decelerated by the speed reduction mechanism, and the driving force is correspondingly increased and transmitted to the lifting part of the floor lifting mechanism via the pull cable. Since the movable floor portion is pulled up from the floor lifting mechanism, the sole length tends to be shorter than that of a tall person without using a large motor or the like as a drive source of the seat position adjusting mechanism. The installation height of the movable floor portion can be automatically adjusted so that a short stature person can put the foot on the operation pedal and properly depress it. And even when the pull cable is bent largely, the transmission function of the driving force is maintained appropriately, so that the layout cable is arbitrarily arranged in a limited space without restricting the freedom of layout. And there is no delay in transmission of the driving force unlike when the torque cable is used, so that the installation height of the movable floor portion can be adjusted quickly and appropriately according to the sole length of the occupant. There are advantages such as.

In particular, the reduction ratio of the traction stroke can be arbitrarily set according to the diameter ratio between the large-diameter pulley and the small-diameter pulley constituting the speed reduction mechanism, so that it can be moved according to the driving force input from the seat position adjusting mechanism. The floor portion can be smoothly moved up and down, and the front and rear strokes of the seat cushion portion and the up and down strokes of the movable floor portion can be properly matched.

In the invention according to claim 2 , when the occupant seat is mounted in the passenger compartment and the assembly work is performed, the reduction mechanism can be assembled at the same time, and the lower part of the movable floor portion can be There is an advantage that it is possible to prevent the installation height from being restricted due to the provision of the speed reduction mechanism.

In the invention according to claim 3, when the seat cushion portion is moved to the front side of the vehicle body by the seat position adjusting mechanism, the driving force of the pull cable is moved to the front side of the vehicle body via the fixed pulley. By converting to the moving direction, the movable floor portion can be moved upward in the front portion, and when the movable floor portion is raised, the moving pulley serves as a movable pulley. The traction stroke can be reduced by a factor of two, and the traction force can be doubled and transmitted to the movable floor portion. Therefore, the movable floor portion can be smoothly moved up and down by transmitting the driving force to the floor lifting mechanism without using a large driving motor or the like as a driving source of the seat position adjusting mechanism.

In the invention according to the fourth aspect , since the speed reduction mechanism including the fixed pulley and the moving pulley can be disposed and concealed below the movable floor portion, the speed reduction mechanism is exposed to the vehicle interior and the appearance is impaired. There is an advantage that can be prevented.

  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 this 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 transmitted to one end portion of the slide shaft 25 as a traction force. The cable end ring 29 and the transmission for transmitting the driving force transmitted from the pull cable 28 to one end of the slide shaft 25 to the other end (in this embodiment, the end located on the center side in the vehicle width direction). The cable end ring 31 provided at the base end portion of the 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 driven to rotate, the central link 57 is oscillated and displaced, and the driving force is transmitted to the rear link 55 via the connecting link 59. The rear link 55 The seat cushion portion 1a is driven to move up and down by swinging 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, 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 moves the seat cushion portion 1 a of the occupant seat 1 to the front side of the vehicle body by the seat position adjusting mechanism 2. A cable pulling mechanism 72 for taking out the driving force as a pulling force of the pull cable 28 led out from the installation portion of the floor lifting mechanism 6 through the cross member 11 to the rear side thereof is provided. A reduction mechanism described later that reduces the pulling stroke of the pull cable 28 and transmits it to the lifting portion (slide shaft 25) of the floor lifting mechanism 6, and a slack of the pull cable 28 is removed to apply a predetermined tension to the inner wire 28b. And an adjustment mechanism 8 to be described later that finely adjusts the installation height of the movable floor portion 5 by manual operation. Door is provided.

  The cable pulling 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 is led out from the base end portion of the outer casing 28a locked to the locking portion 78 toward the rear side of the vehicle body, and the inner wire 28b is wound around the small-diameter pulley 77 and the inner wire 28b. A T-type end fitting 28 c provided at the base end of the small-diameter pulley 77 is engaged with 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-shaped end fitting 79 a provided at one end of the driving wire 79 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. During the forward movement of the seat cushion portion 1a, the driving force is taken out as a traction force that pulls the inner wire 28b of the pull cable 28 toward the rear side of the vehicle body, and the traction stroke is the large diameter pulley 76 and the small diameter pulley 77. It is comprised so that it may be reduced by the deceleration mechanism provided with this and it may be transmitted to the raising part (slide shaft 25) of the said floor raising / lowering mechanism 6. FIG.

  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 pulling 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 (the direction of the arrow β) acts, and this pulling force is transmitted to the lifting portion composed of the slide shaft 25 of the floor lifting mechanism 6. As the slide shafts 24 and 25 are slid obliquely upward along the guide groove 14, the movable floor portion 5 is driven up.

  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, and the like, via the pull cable 28 and the drive wire 79, and the cable pulling mechanism 72 including the large diameter pulley 76 and the small diameter pulley 77, the floor lifting mechanism 6 The slide shaft 25 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. In a driving posture adjusting device having a floor lifting mechanism 6 that lifts and lowers a movable floor portion 5 on which a footrest is placed when stepping on, the seat cushion portion 1a is moved back and forth by the seat position adjusting mechanism 2. The driving force is transmitted to the lifting portion (slide shaft 25) of the floor lifting mechanism 6 to drive the movable floor portion 5 and the driving force when the seat cushion portion 1a is moved forward. The cable pulling mechanism 72 to be taken out as the pulling force of the pull cable 28, and the floor lifting / lowering by reducing the pulling stroke of the pull cable 28. Because having a reduction mechanism having the above-described large-diameter pulley 76 and the small-diameter pulley 77 is transmitted to the structure 6, there is an advantage that the seated posture of the driver seated in the passenger seat 1 can easily and properly adjusted.

  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. The driving force is decelerated by the speed reduction mechanism, and the driving force is correspondingly increased and transmitted to the lifting portion of the floor lifting mechanism 6 via the pull cable 28. Then, the movable floor portion 5 is pulled up from the floor lifting mechanism 6.

  Therefore, without using a large driving motor 46 as a driving source of the seat position adjusting mechanism 2, the driving force can be transmitted to the floor lifting mechanism 6 to smoothly move the movable floor portion 5 up and down. In addition, 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. That is, 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 driver's physique 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. In addition, by sliding the inner wire 28b along the outer casing 28a of the pull cable 28, the driving force can be transmitted directly to the lifting portion of the movable floor portion 5, so 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 toward the rear side of the vehicle body input from the urging means 26 to the floor support members 12 and 13 via the slide shaft 24 and the pull cable 28 to the slide shaft 25 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.

  As shown in the above embodiment, the large-diameter pulley 76 that is rotationally driven by the pull cable 28 (specifically, the drive wire 79), and the large-diameter pulley 76 are integrally connected to the large-diameter pulley 76 so as to be rotationally driven synchronously. The cable pulling mechanism 72 is provided with a speed reducing mechanism including a small-diameter pulley 77 that is transmitted to the lifting portion (slide shaft 25) of the floor lifting mechanism 6 via the pull cable 28 when the seat cushion portion 1a moves forward. When the traction stroke is reduced in accordance with the diameter ratio of the large diameter pulley 76 and the small diameter pulley 77, the diameter ratio between the large diameter pulley 76 and the small diameter pulley 77 can be changed variously to Since the reduction rate of the traction stroke can be set arbitrarily, it is possible to reduce the size of the drive motor 46 that is the drive source of the seat position adjusting mechanism 2 and to reduce the size. It is possible to smoothly displaced up and down the floor section 5, an elevating stroke of the longitudinal stroke and movable floor portion 5 of the seat cushion 1a 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. It is increased and transmitted to the raising portion of the movable floor portion 5. 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.

  Moreover, as shown in the embodiment, the cable pulling mechanism 72 is rotatably supported by the seat slide lower rail 41 that slidably supports the seat cushion portion 1a, and the pull cable 28, specifically, the inner wire 28b. A large-diameter pulley 76 and a small-diameter pulley 77 around which the drive wire 79 is wound are provided, and the inner wire 28b and the drive wire 79 of the pull cable 28 wound around the large-diameter pulley 76 and the small-diameter pulley 77 are respectively connected to the front side of the vehicle body. When the seat cushion portion 1a is moved forward, the driving force when the seat cushion portion 1a moves forward is directly applied to the movable floor portion 5 disposed on the front side as a traction force via the pull cable 28. The movable floor can be transmitted when the seat cushion portion 1a moves forward. 5 there is an advantage that can be easily and properly increased drive.

  Furthermore, in the above-described embodiment, a speed reduction mechanism including the large-diameter pulley 76 and the small-diameter pulley 77 is disposed on the installation portion of the occupant seat 1, specifically, the seat slide lower rail 41. Since it is configured to be mounted in the vehicle compartment together with the seat slide lower rail 41 with the drive wire 79 engaged in advance, the assembly work can be easily performed. Further, there is an advantage that the installation position of the movable floor portion 5 can be prevented from rising due to the presence of the speed reduction mechanism as in the case where the speed reduction mechanism is disposed below the movable floor portion 5.

  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.

  Further, as shown in the above embodiment, the left and right end portions of the slide shafts 24, 25 provided in the movable floor portion 5 extending in the vehicle width direction are aligned with the front rising guide grooves 14 provided in the floor support member 13. When slidably supported, a 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. Can be borne on the lower side of the. Therefore, it is possible to stably support the movable floor portion 5 while preventing an excessive load from acting on the pull cable 28, and lightly move the movable floor portion 5 along the guide groove 14. There is an advantage that it can be moved up and down smoothly by 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 made to correspond to the inclination angle of the dash panel 7 provided below the front part of the passenger compartment, the movable floor portion When the movable floor portion 5 is moved 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 along the guide groove 14, the dash panel 7 and the front end portion of the movable floor portion 5 can be kept constant, so that there is an advantage that it is possible to prevent the passenger from feeling uncomfortable due to the interval becoming 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.

  Further, instead of the above-described embodiment in which the speed reduction mechanism including the large-diameter pulley 76 and the small-diameter pulley 77 is provided on the installation portion of the occupant seat 1, specifically, the seat slide lower rail 41, the cable pulling mechanism 72 is simply provided. One rotating pulley (not shown) is provided, and the pull cable 28 and the inner wire 28b are wound around the rotating pulley. As shown in FIGS. 20 to 22, the pull cable 28 positioned below the movable floor 5 is provided. It is good also as a structure which arrange | positioned the speed reduction mechanism 90 provided with the fixed pulley 91 and the moving pulley 92 in the routing route.

  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. Then, the inner wire 28b of the pull cable 28 whose one end is locked to the vehicle body side by the locking portion 97 is wound around the moving pulley 92 and the fixed pulley 91 in this order and led to the installation portion of the cable pulling mechanism 72. Have been arranged to be.

  In the above configuration, the inner wire led forward from the outer casing 28a of the pull cable 28 when the seat cushion portion 1a of the passenger seat 1 including the driver's seat is moved to the front side of the vehicle body by the seat position adjusting mechanism 2. When a traction force that pulls 28b to the rear side of the vehicle body is input, this driving force is converted to a direction in which the moving pulley 92 is moved 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. When the movable floor portion 5 can be raised and the movable floor portion 5 is raised, the movable pulley 92 serves as a movable pulley, thereby reducing the pulling stroke of the pull cable 28 by half. The traction 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 cable pulling 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 cable pulling mechanism. It is a disassembled perspective view which shows specific structures, such as a cable pulling 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 28 Pull cable 76 Large diameter pulley (deceleration mechanism)
77 Small-diameter pulley (reduction mechanism)
90 Deceleration mechanism 91 Fixed pulley 92 Moving pulley

Claims (4)

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, A driving posture adjusting device having a floor lifting mechanism that lifts and lowers a movable floor portion placed thereon, and transmits a driving force for moving the seat cushion portion back and forth by the seat position adjusting mechanism to the lifting portion of the floor lifting mechanism The pull cable that drives the movable floor to rise, the cable pulling mechanism that takes out the driving force as the pulling force of the pull cable when the seat cushion moves forward, and the pulling stroke of the pull cable is reduced. And a speed reduction mechanism that transmits to the floor lifting mechanism ,
The speed reduction mechanism includes a large-diameter pulley that is rotationally driven by a pull cable when the seat cushion portion is moved forward, and a small-diameter pulley that is rotationally driven in synchronization with the large-diameter pulley. A driving posture adjusting device configured to reduce a traction stroke transmitted to a lifting portion of a floor lifting mechanism via the pull cable according to a diameter ratio . The driving posture adjusting apparatus according to claim 1, wherein the speed reduction mechanism is disposed in an occupant seat installation portion . 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, A driving posture adjusting device having a floor lifting mechanism that lifts and lowers a movable floor portion placed thereon, and transmits a driving force for moving the seat cushion portion back and forth by the seat position adjusting mechanism to the lifting portion of the floor lifting mechanism The pull cable that drives the movable floor to rise, the cable pulling mechanism that takes out the driving force as the pulling force of the pull cable when the seat cushion moves forward, and the pulling stroke of the pull cable is reduced. And a speed reduction mechanism that transmits to the floor lifting mechanism,
The floor lifting mechanism is configured to move the movable floor portion in the front-rear direction of the vehicle body in accordance with the traction force transmitted via the pull cable, and to move the movable floor portion up and down in conjunction with the movable floor portion, and The speed reduction mechanism includes a moving pulley supported on the movable floor portion and a fixed pulley supported on the vehicle body side, and a pull cable having one end portion fixed on the vehicle body side is wound around the moving pulley and the fixed pulley in this order. It is in OPERATION posture adjusting device you characterized in that it is routed to be led to the installation of the cable pull mechanism. The driving posture adjusting apparatus according to claim 3 , wherein the speed reduction mechanism is disposed below the movable floor portion .

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