JP2008247287A - Driving attitude adjustment device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To properly ensure sitting attitude and operability relative to a foot pedal respectively even when physique of a driver is varied. <P>SOLUTION: The driving attitude adjustment device is provided with a seat position adjustment mechanism for adjusting installation height or the like of a seat cushion making relevant to forward/rearward movement of a driver's seat 1; and a floor lifting mechanism for lifting/driving a floor board 5 positioned at a foot side part of an occupant interlocking with adjustment action of front/rear position of the driver's seat 1. The seat position adjustment mechanism is constituted such that it is varied in a direction that an inclination angle of the seat cushion is reduced interlocking with action for moving the driver's seat from an intermediate position to a front side of the vehicle body. The floor lifting mechanism raises the floor board 5 corresponding to the front movement of the driver's seat 1 and is constituted so as to drive the floor board 5 based on the driving characteristic set such that a raising ratio of the floor board 5 is gradually reduced as the driver's seat 1 is moved from the intermediate position to the front side. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a driving posture adjusting device for appropriately adjusting the driving posture of a driver seated in a driver seat.

Conventionally, as shown in, for example, Patent Document 1 below, in a driving posture adjustment device that adjusts the driving posture of a driver sitting in a driver's seat, a physique detection unit that detects the physique of the driver, and the driver This floor adjustment has a foot pedal composed of a brake pedal to be operated, a movable floor portion disposed so as to be able to move up and down in the vicinity of the foot pedal, and a floor adjusting means for adjusting the lifting position of the movable floor portion. According to the means, according to the physique of the driver detected by the physique detection means, the elevation position of the movable floor portion is adjusted so that the movable floor portion is positioned upward as the physique is smaller. In addition, the above-mentioned driving posture adjusting device moves the seat cushion of the driver's seat in the front-rear direction of the vehicle body to adjust the vertical position and the front-rear position, and adjusts the inclination angle of the seat cushion in conjunction with this. A seat adjustment means is provided for adjusting the position of the line of sight and the driving posture with respect to the steering wheel while maintaining a sitting posture corresponding to the physique of the driver.
JP 2006-44422 A

  As disclosed in Patent Document 1 above, the seat cushion of the driver's seat is moved in the front-rear direction of the vehicle body according to the physique of the driver to adjust the vertical position and the front-rear position, and the seat is interlocked with this. When the inclination angle of the cushion is adjusted and the movable floor portion disposed in the vicinity of the foot pedal is displaced up and down, if the amount of displacement of the movable floor portion can be adjusted appropriately, the above foot pedal The operability can be improved. However, if the front / rear position, the vertical position, and the inclination angle of the seat cushion are changed according to the driver's physique as described above, the driver's seating posture changes correspondingly. There is a problem that it is difficult to set the amount of vertical displacement of the floor properly, and that the driver's seating posture becomes unstable and the operability of the foot pedal etc. is unavoidable. .

  In other words, when the driver seated in the driver's seat is changed, the newly seated driver moves the driver's seat back and forth by the seat position adjustment mechanism so that the height of the eye point matches the appropriate eyeline. While trying to secure a forward view, the vertical position and inclination angle of the seat cushion change simultaneously with the forward / backward movement of the driver's seat, so the driver's seating posture relative to the driver's seat, specifically, The standing angle and the knee angle, which is the bending angle between the thigh and the lower knee, change, and the operability with respect to the foot pedal also changes accordingly. Therefore, even if the movable floor portion is changed up and down by paying attention only to the difference in the size of the foot that changes according to the physique of the driver, both the sitting posture of the driver and the operability to the foot pedal There was a problem that it was difficult to ensure the appropriateness.

  In addition, for example, when a short stature person moves the driver's seat forward for the purpose of causing the height of the eye point to coincide with the appropriate eye line and moving the foot to the stepping position of the stepping pedal, the movement range is If it is large, it may be too close to the steering wheel or the shift knob, and these operability may deteriorate. Conversely, when a tall person moves the driver's seat backwards for the purpose of matching the height of the eye point to the appropriate eyeline and ensuring the operability of the stepping pedal, the range of movement is large. In this case, the operability of the steering wheel and the shift knob may be deteriorated due to being too far from the steering wheel or the shift knob.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a driving posture adjusting device that can appropriately ensure the sitting posture and the operability with respect to the foot pedal even when the physique of the driver changes. It is what.

  The invention according to claim 1 is a seat position adjusting mechanism that moves the driver's seat back and forth within a preset range and adjusts the seat cushion installation height and seating surface angle in response to the driver seat's forward and backward movement. And a driving posture adjusting device that moves up and down the movable floor portion located at the foot of the occupant in conjunction with the adjustment operation of the front and rear position of the driver seat, wherein the seat position adjusting mechanism includes: In addition to moving the seat cushion upward in a side view of the vehicle in conjunction with the operation of moving the driver's seat from the middle position of the forward / backward movement range to the front side of the vehicle body, the seat surface angle is such that the inclination angle with respect to the horizontal plane becomes smaller The floor elevating mechanism raises the movable floor portion in response to the forward movement of the driver seat, and the driver seat moves forward from the intermediate position. The basis of the set driving characteristic such that the movable floor portion increase rate of is gradually reduced, but that is configured to drive the movable floor portion as it moves in.

  The invention according to claim 2 is a seat position adjusting mechanism that moves the driver's seat back and forth within a preset range and adjusts the seat cushion installation height and seating surface angle in response to the driver seat's back and forth movement. And a driving posture adjusting device that moves up and down the movable floor portion located at the foot of the occupant in conjunction with the adjustment operation of the front and rear position of the driver seat, wherein the seat position adjusting mechanism includes: The seat cushion is moved downward in the side view of the vehicle in conjunction with the movement of the driver's seat from the middle position of the forward / backward movement range to the rear side of the vehicle body, and the inclination angle with respect to the horizontal plane increases. The floor lifting mechanism lowers the movable floor portion in response to the rearward movement of the driver seat, and the driver seat is moved from the intermediate position. The basis of the set driving characteristic such that the movable floor portion of the descending rate is gradually reduced, but that is configured to drive the movable floor portion as it moves in.

  According to a third aspect of the present invention, in the driving posture adjusting device according to the first or second aspect, when the inclination angle of the seat cushion with respect to the horizontal plane is changed by the seat position adjusting mechanism, The provided seat back is configured to be driven integrally.

  In the invention according to claim 1, while the range of movement of the driver's seat to the front side is narrowed, the eye point of a short person and the like can be matched with the appropriate eye line, and the optimum position of the sole (the palm ball) Can be accurately brought into contact with the operation point of the step pedal, the operability of the step pedal can be maintained in a good state, and the operability of the pedal is too close to the steering wheel and shift knob. There is an advantage that the driving posture can be appropriately adjusted according to the physique of the driver without causing adverse effects such as deterioration. In addition, when a tall person or the like who is most likely to use the vehicle adjusts his driving posture, the seat cushion position adjustment and floorboard There is an advantage that the height adjustment can be performed properly.

  In the invention according to claim 2, while the range of movement of the driver's seat to the rear side is narrowed, the eye point of a tall person or the like can be matched with the appropriate eye line, and the optimum position of the sole (the palm ball) Can be accurately brought into contact with the operation point of the step pedal, the operability of the step pedal can be maintained in a good state, and the operability of the step pedal is too far from the steering wheel or shift knob. There is an advantage that the driving posture can be appropriately adjusted according to the physique of the driver without causing adverse effects such as deterioration. In addition, when a tall person or the like who is most likely to use the vehicle adjusts the driving posture, the seat cushion position adjustment and the floor board are performed with the seating posture substantially matched to the appropriate posture. There is an advantage that the height adjustment can be properly performed.

  In the invention according to the third aspect, when the seat position adjustment mechanism changes the inclination angle of the seat cushion with respect to the horizontal plane, the seat cushion and the seat back erected at the rear portion thereof are integrally driven. The seating posture of the occupant can be maintained in an appropriate state, and the driver's eye point can be accurately and easily matched to the appropriate line without increasing the forward / backward movement and vertical movement of the seat cushion. Can do.

  1 to 4 show an embodiment of a driving posture adjusting apparatus according to the present invention. The driving posture adjusting device moves the driver's seat 1 back and forth, and adjusts the installation height and seating surface angle of the seat cushion 35 in accordance with the front / back movement of the driver seat 1, and the driver's seat. When the driver seated in 1 operates the step pedal including the accelerator pedal 11 or the brake pedal 12, the movable floor portion on which the heel portion of the foot is placed, that is, the step of the driver seated in the driver seat 1 And a floor raising / lowering mechanism 6 for moving up and down the floor board 5 installed so as to cover the upper surface of the vehicle body floor 3 located in the section.

  A conventionally well-known floor provided with an insulator (not shown) such as a felt material or glass wool having a sound insulation function and a heat insulation function on the upper surface of the vehicle body floor 3 and a surface layer material such as a carpet material covering the upper surface. A trim material (not shown) is installed. In FIG. 2, reference numeral 13 denotes a footrest. As shown in FIGS. 3 and 4, the floor board 5 includes a front board 15 having a front end portion pivotally supported by a lower end portion of a dash panel 8 via a hinge member 14 and a hinge member 16 interposed at a rear end portion thereof. And a rear board 17 connected to bendable. A front portion of the front board 15 is installed below a step pedal including the accelerator pedal 11 and the brake pedal 12, and a side portion thereof is cut away so as to avoid interference with the footrest 13. An interference avoidance unit 20 is provided.

  The width of the rear board 17 of the floor board 5 is set so as to cover substantially the entire area between the side sills disposed on the left and right of the vehicle body floor 3 and the floor tunnel disposed in the center. Yes. The driver's seat 1 is installed on the rear side of the installation portion of the floor board 5, and a cross member 24 for connecting the floor tunnel and the side sill is disposed below the front end portion of the floor board 5. On the side, a pair of left and right guide rails 25 that slidably support the rear portion of the rear board 17 are installed. Further, on the upper surface of the floor board 5, a single surface layer mat member 23 made of a pile material, a backing material or the like is installed so as to cover both the front board 15 and the rear board 17.

  As shown in FIGS. 4 and 5, the guide rail 25 is made of a U-shaped cross section mounted on the vehicle body floor 3, and the grommet 27 protruding from the rear lower surface of the rear board 17 is engaged and disengaged. It is configured to hold a slider 28 that can be locked. Then, the slider 28 slides in the front-rear direction of the vehicle body along the guide rail 25 according to the up-and-down displacement of the floor board 5 to be described later, so that the rear portion of the rear board 17 is supported by the guide rail 25. It is designed to move back and forth.

  As shown in FIGS. 3, 4, and 6, the floor elevating mechanism 6 includes a pair of left and right drive links 31 whose front ends are pivotally supported on the rear lower surface of the front board 15, and both front and rear ends of the vehicle body floor 3. A pair of left and right screw shafts 32 rotatably supported on the upper surface via a bearing member, a pair of drive cables 33 that rotationally drive the screw shafts 32, and screwed to the screw shafts 32, and the vehicle body floor 3 And a slide block 34 slidably supported along the upper surface. A base end portion of the drive link 31 is pivotally supported on a side surface of the slide block 34. The floor lifting mechanism 6 is configured by the drive link 31, the screw shaft 32 that moves the base end portion of the drive link 31 back and forth along the vehicle body floor 3, and the drive cable 33 and the slide block 34. ing. The floor raising / lowering mechanism 6 is disposed below the floor board 5.

  The drive cable 33 is a flexible cable body in which a cable material capable of transmitting a rotational force is rotatably held, and the rotational force input from the seat position adjusting mechanism 2 is applied as described later. The screw shaft 32 is configured to be transmitted. When the screw shaft 32 is driven to rotate in accordance with the rotational force, the slide block 34 is screwed along the screw shaft 32 to the front side of the vehicle body, so that the rear end portion of the drive link 31 is While being pushed forward, the front end portion of the drive link 31 is pushed up correspondingly. As a result, the drive link 31 shifts from the lying state to the standing state, and the rear side portion of the front board 15 is pushed upward via the drive link 31, so that the front board is supported with the hinge member 14 as a fulcrum. 15 is oscillated and displaced from the lowered position shown by the phantom line in FIGS. 1 and 4 to the raised position shown by the solid line in FIG.

  On the other hand, since the rear side board 17 of the floor board 5 is connected to the rear end part of the front side board 15 by the hinge member 16, the rear side board 17 corresponds to the upward movement of the front side board 15. The front side portion 17 is pushed upward, and the rear side portion is supported on the vehicle body floor 3 by the guide rail 25 and is moved to the front side of the vehicle body. As a result, the connecting portion between the front board 15 and the rear board 17 rises and the floor board 5 shifts to a state of being bent to the mountain side in a side view.

  Further, when the screw shaft 32 is reversely driven by the drive cable 33, when the slide block 34 moves to the rear side of the vehicle body along the screw shaft 32, the drive link 31 shifts from the standing state to the lying state. The rear side portion of the front board 15 is lowered from the raised position indicated by the solid line in FIG. 4 as indicated by the phantom line in FIGS. 1 and 4, and the rear board 17 is moved to the lowered position along the vehicle body floor 3. It is like that. The floor board 5 moves the driver's seat 1 from the middle position of the front-rear movement range to the front side of the vehicle body and moves the driver seat 1 from the middle position of the front-rear movement range to the front side of the vehicle body, as will be described later. Depending on the operation, it is configured to move up and down based on preset drive characteristics.

  The driver's seat 1 is a separate type seat that is individually installed on the driver's seat side and the passenger's seat side in the front part of the passenger compartment. The seat cushion 35 that constitutes the seating surface of the occupant, and the rear of the seat cushion 35 A seat back 36 rising upward from the end portion and a headrest 37 attached to the upper end portion of the seat back 36 are provided, and the seat position adjustment mechanism 2 provided on the vehicle body floor 3 allows the front and rear positions and upper and lower positions of the seat cushion 35 to be The position and the installation angle with respect to the vehicle body floor 3 are supported in an adjustable manner.

  As shown in FIGS. 7 and 8, the seat position adjusting mechanism 2 includes a pair of left and right seat rails 39 installed on the vehicle body floor 3 in an upwardly inclined state, and a driver seat along the seat rails 39. A slide drive unit 40 that slides and displaces the seat cushion 35 in the front-rear direction of the vehicle body, and a tilt drive unit 41 that moves the rear end of the seat cushion 35 up and down in conjunction with the back-and-forth movement of the driver's seat 1 are provided. .

  The seat cushion 35 includes a cushion frame 42 disposed so as to cover the cushion main body portion from below, and below the cushion frame 42 is the seat rail 39 made of a U-shaped cross-section member having an open upper surface. Is provided. In the seat rail 39, a slider 44 having a projecting piece 45 projecting on its upper surface is slidably disposed, and an upper end portion of the projecting piece 45 is disposed below the cushion frame 42 via a pivot shaft 46. It is pivotally supported. The slider 44 is formed with a screw hole into which the screw shaft 47 of the slide drive unit 40 is screwed.

  The screw shaft 47 of the slide drive unit 40 is disposed in the seat rail 39, and both front and rear end portions are rotatably supported by bearing members, and the rear end portion is driven via a power transmission cable (not shown). It is connected to a motor (not shown). Then, a driving force is transmitted from the drive motor to the screw shaft 47 via a power transmission cable, and the screw shaft 47 is driven to rotate so that the slider 44 is screwed along the seat rail 39. It is configured. A driving cable 48 that transmits a driving force to the floor lifting mechanism 6 of the floor board 5 is connected to the front end portion of the screw shaft 47 via a coupling 49.

  The tilt drive unit 41 of the seat position adjusting mechanism 2 includes a support plate 50 protruding below the rear portion of the cushion frame 42, a guide plate 51 fixed to the side surface of the guide rail 25 and vertically installed, The guide plate 52 has a guide pin 52 projecting from the support plate 50, and the guide plate 51 is formed with a guide groove 53 having an upwardly inclined portion, and the guide pin 52 extends along the guide groove 53. It is slidably supported. The slider 44 is screw-fed by the screw shaft 47 of the slide drive unit 40 and the front portion of the seat cushion 35 moves back and forth along the guide rail 25 in the guide groove 53 of the guide plate 51. As the guide pin 52 slides along, the rear portion of the seat cushion 35 is driven up and down to change the inclination angle of the seat cushion 35 with respect to the horizontal plane, and the seat cushion 35 and the seat erected on the rear portion thereof. The back 36 is configured to be driven integrally.

  The drive cable 48 that transmits the driving force of the slide drive unit 40 to the floor lifting mechanism 6 of the floor board 5 is made of a cable material that is rotatably supported by a flexible outer cylinder, and its tip portion. 9 is introduced into the first transmission box 61 as shown in FIG. In the first transmission box 61, as shown in FIG. 10, there is a worm gear 62 that is connected to the tip end portion of the drive cable 48 and rotates integrally therewith, and a worm wheel 63 that is rotationally driven by the worm gear 62. The worm wheel 63 is formed with an engagement hole into which a spline shaft 65 projecting from the lower second transmission box 64 is inserted and engaged. The rotational force of the drive cable 48 is transmitted to the worm wheel 63 via the worm gear 62, whereby the worm wheel 63 is rotationally driven and the rotational force is transmitted to the second transmission via the spline shaft 65. It is transmitted to the box 64.

  In the second transmission box 64, a first bevel gear 66 that rotates integrally with the spline shaft 65, and a second bevel gear 67 that is rotationally driven by the first bevel gear 66 are disposed. The pair of drive cables 33 are fixed to the second bevel gear 67 so as to rotate together, so that the rotational force of the second bevel gear 67 is transmitted to the drive cable 33 of the floor lifting mechanism 6. It is comprised so that. Note that a reduction mechanism comprising the worm gear 62 and the worm wheel 63 is disposed between the drive cable 48 of the slide drive unit 40 and the drive cable 33 of the floor lifting mechanism 6, so that the slide drive unit When the rotational drive force is transmitted from the 40 drive cables 48 to the drive cable 33 of the floor lifting mechanism 6, the rotational speed is reduced to, for example, 1/10.

  The second transmission box 64 is disposed on the front side of the cross member 24 disposed on the front side of the driver's seat 1 and is fixed to the vehicle body floor 3 with mounting bolts. In a state where the transmission boxes 61 are superposed, they are configured to be integrally connected by a connecting bolt. When the first transmission box 61 is overlaid on the second transmission box 64, the spline shaft 65 is inserted into the engagement hole of the worm wheel 63 disposed in the first transmission box 61. These are connected together. When the slider 44 is screwed by the slide drive unit 40 and the seat cushion 35 is moved back and forth along the guide rail 25, the drive force is applied to the drive cable 48 and the first and second transmission boxes 61 and 64. , The drive cable 33 and the screw shaft 32 are rotationally driven, and the slide block 34 is screw-fed in the front-rear direction of the vehicle body. 31 is configured to shift from the lying state to the standing state, or from the standing state to the lying state, and the rear side portion of the front board 15 is driven up and down.

  When the seat cushion 35 is slid and displaced from the rear position shown in FIGS. 1 and 7 to the front position shown in FIG. 11 by the slide drive unit 40, the front part of the seat cushion 35 slides along the seat rail 39, for example. As the guide pin 52 slides toward the front side of the vehicle body along the guide groove 53 of the guide plate 51, the rear end portion of the seat cushion 35 is pushed up and the seat cushion 35 is lifted. Oscillating displacement. As a result, according to the forward movement of the seat cushion 35, the inclination angle with respect to the horizontal plane is gradually reduced so that the seat cushion angle of the seat cushion 35 is almost horizontal, and the seat back 36 is moved in response to this. It will be displaced from the tilted state to a state close to upright.

  For example, when a short short person A sits on the driver's seat 1, the driver's seat 1 is moved to the front of the vehicle body by operating an operation switch (not shown) to operate the drive motor of the slide drive unit 40. 11, when the front portion of the seat cushion 35 is raised along the guide rail 25 as shown in FIG. 11, the rear portion of the seat cushion 35 is pushed up, and the horizontal surface of the seat cushion 35 is viewed from the side of the vehicle. The seating surface angle changes in the direction in which the inclination angle with respect to becomes smaller. In response to this, the upper body of the short stature person A stands up, and the eye point a1 moves upward in front of the height corresponding to the height, so that the appropriate eye tilts forward and downward at an angle of about 8 °. Matches the line L, that is, the lower field of view of the short stature A coincides with the line along the lower end of the front window and the upper surface of the bonnet, and the eyeball a1 on the sole consists of the accelerator pedal 11 and the like. The amount of forward and backward movement of the seat cushion 35, the amount of vertical displacement, and the amount of change in the seating surface angle are set so as to contact the operation point 11b of the foot pedal.

  On the other hand, when the tall tall person C is seated on the driver's seat 1, when the driver's seat 1 is slid to the rearmost position by the slide drive unit 40, as shown in FIG. As the front part descends along the guide rail 25, the rear part of the seat cushion 35 is pushed down, and the seating surface angle changes in a direction in which the inclination angle of the seat cushion 35 with respect to the horizontal plane increases in a side view of the vehicle. The seat cushion 35 is moved back and forth so that the eye point c1 of the tall person C coincides with the appropriate line L and the lever ball part of the sole comes into contact with the operation point 11b of the step pedal including the accelerator pedal 11 and the like. The amount of change, the amount of vertical displacement, and the amount of change in the seating surface angle are set.

  FIG. 12 is a graph showing the driving characteristics of the seat cushion 35 and the driving characteristics of the floor board 3 according to the back-and-forth movement of the driver's seat 1. The solid line in FIG. 12 shows the seating posture of the occupant seated in the driver's seat 1. The driving characteristic (first driving characteristic) on the premise of maintaining is shown, and the broken line in FIG. 12 shows the driving characteristic (second driving characteristic) on the premise that the occupant seated on the driver's seat 1 changes its seating posture. ).

  As shown by the solid line in FIG. 12, the front / rear movement range of the seat cushion 35 of the driver's seat 1 is set to 210 mm, and as shown in FIG. 13, a tall person B having an average figure with a height of about 168 cm. Is seated on the driver's seat 1 in an appropriate posture and the seat cushion 35 is set at an intermediate position consisting of the substantially central portion of the front-rear movement range so that the eye point b1 of the tall person B coincides with the proper eye line L. In the seat position adjusting mechanism 2 configured as described above, the driving posture adjusting operation based on the first driving characteristic in a state where the seating posture of the occupant seated on the driver seat 1 is maintained will be described below.

  For example, a short stature A having a height of about 150 cm is seated in the same posture (appropriate posture) as the middle stature B (see the phantom line in FIG. 13), and the seat cushion 35 is moved forward from a substantially middle position in the front-rear movement range. The drive characteristic of the seat cushion 35 is set so that the seat cushion 35 is moved about 25 mm upward in conjunction with this movement. As a result, the eye point a1, the waist a2 and the buttocks a3 of the short stature A seated in the proper posture on the seat cushion 35 are parallel so that the ascending amount is 25 mm as shown by the arrow M in FIG. While moving, the insulator ball part a4 on the sole of the short stature A contacts the operation point 11b of the accelerator pedal 11 or the like.

  The appropriate posture of the occupant seated in the driver's seat 1 is a seating posture that can maintain a comfortable state for a long time and is suitable for pedal operation. Specifically, the ankle angle θ1 is 90 ° and the knee angle θ2 is 125 °, the bending angle (θ5) between the upper body and the thigh from the hip to the shoulder is about 95 °, and the appropriate rhino angle (θ3), which is the angle formed by the thigh with respect to the horizontal line It has been confirmed by an ergonomic experiment that the angle is a value obtained by adding about 1.5 ° to the inclination angle α of the seat cushion 35. And the movement locus | trajectory of the insulator ball | bowl part 4a in the sole surface according to the back-and-forth movement of the said seat cushion 35 and a raising / lowering movement is based on the node angle of each passenger | crew in the said appropriate posture, the length of a thigh, and a knee lower part, etc. Thus, it can be obtained by calculation or simulation.

  That is, in the embodiment shown in FIG. 13, the seat cushion 35 is moved forward by approximately 105 mm from a substantially middle position in the front-rear movement range, and the seat cushion 35 is moved upward by about 25 mm in conjunction with this movement. If the movement characteristics of the seat cushion 35 are set, the lever ball portions a4 and b4 on the backs of the feet are stepped on the accelerator pedal 11 and the like while maintaining the sitting postures of the short stature A and the middle stature B. It can be brought into contact with the operation point 11b of the pedal.

  The rising amount (25 mm) of the seat cushion 35 is larger than the average value of eye point differences between the tall person B and the short person A, that is, the vertical difference average (about 90 mm) of the eye points a1 and b1 corresponding to the sitting height difference. If the upper body is not rotated by changing the installation angle of the seat cushion 35, that is, the inclination angle α of the seat cushion 35 with respect to the horizontal line, the eye point a1 of the short stature A is moved forward and the appropriate eyeline L is inclined. Even if the appropriate eye point height is reduced by about 20 mm due to the above, the eye point a1 of the short stature A is positioned below the appropriate eye line L as shown in FIG. Become. The amount of decrease in the appropriate eye point height (about 25 mm) is a value obtained by adding the forward movement distance (105 mm) of the driver's seat 1 and the forward / backward movement amount (about 40 mm) of the eye point a1 due to the rotation of the upper body (145 mm). ) Is integrated by tan 8 ° (= 0.1405).

  Therefore, as the seat cushion 35 is moved from the intermediate position to the front side by about 105 mm as described above, the rear end portion of the seat cushion 35 is raised by the tilt driving portion 41 of the seat position adjusting mechanism 2, and the seat cushion 35 Is changed from, for example, 18 ° to 15 °, and the above-mentioned short stature A is used with the turning fulcrum 11a or the operation point 11b of the depression pedal including the accelerator pedal 11 as a fulcrum. The eye point a1 of the short stature A is moved upward without changing the contact position of the sole with respect to the stepping pedal by moving the upper body so as to stand up. To match.

  The upward movement amount P of the eye point a1 due to the rotation of the upper body of the short stature A is the distance from the palm ball part a4 on the sole that contacts the operation point 11b of the accelerator pedal 11 to the eye point a1 ( 17 in the example of FIG. 17) and sin β ′ · cos β. Β is an inclination angle (approximately 34 °) with respect to a horizontal line segment connecting the mother-child sphere part a4 of the sole and the eye point a1, and β ′ is that the upper body of the short stature A rotates. The resulting change amount of the inclination angle β is a value (3 °) corresponding to the angle change of the seat cushion 35.

  Specifically, the upward movement amount of the eye point a1 resulting from the rotation of the upper body of the short stature A is about 45 mm, and this value, the forward movement of the driver's seat 1 and the appropriate eyeline L are lowered forward. The total value of the upward movement amount P of the eye point a1 obtained by adding the amount of decrease (about 20 mm) of the eye point a1 due to the inclination to the amount of increase of the seat cushion 35 (25 mm) is This is a value (about 90 mm) that substantially corresponds to the average value of the eye point difference between the short stature person B and the short stature person A. Accordingly, the seat cushion 35 is raised in accordance with the forward movement of the driver's seat 1 as described above, and the upper body of the short stature A is rotated, so that the palm ball portion a4 on the sole of the sole is The eye point c1 of the short stature A can be made to coincide with the appropriate eye line L in a state of being in contact with the operation point 11b.

  The calculation of the upward movement amount P of the eye point a1 due to the rotation of the upper body of the short stature A, as shown in FIG. 17, the length of the lower knee A1 in the short stature A is 41 cm, and the thigh The length of A2 is 38 cm, the length of the upper thigh A3 from the waist a2 to the shoulder a5 is 42 cm, the length of the neck A4 from the shoulder a5 to the eye point a1 is 17 cm, and the above short height The person A has an ankle angle θ1 of 90 °, a knee angle θ2 that is a bending angle between the lower knee A1 and the thigh A2, 125 °, a rhino angle θ3 of 16.5 °, and the upper body A3 and the thigh A2. It is assumed that the user is seated in a posture (appropriate posture) in which the bending angle θ5 is set to 95 ° and the bending angle θ6 between the upper body A3 and the neck A4 is set to 135 °.

  The seat cushion 35 swings and displaces with a pivot shaft 46 located below the front portion as a fulcrum, and the upper body of the short stature A also rotates with the pivot shaft 46 as a fulcrum. Therefore, the upper body of the short stature A cannot be rotated with the operation point 11b of the step pedal as a fulcrum only by the swing displacement of the seat cushion 35, and the operation point 11b of the step pedal is apparently used as a fulcrum. In order to rotate the upper body of the short stature A, it is necessary to move the seat cushion 35 upward along the seat rail 39 along with the swing displacement of the seat cushion 35. Thereby, the final forward movement distance of the seat cushion 35 becomes larger than the above value (105 mm).

  Further, as shown by the phantom line in FIG. 14, for example, a tall person C having a height of about 188 cm sits on the driver's seat 1 in an appropriate posture, and the seat cushion 35 is moved rearward from an intermediate position in the forward / backward movement range. If the movement characteristics of the seat cushion 35 are set so that the seat cushion 35 is moved downward by about 25 mm in association with the movement of the seat cushion 35, the height of the person sitting on the seat cushion 35 in an appropriate posture is set. As shown by the arrow N in FIG. 14, the eye point c1, the waist c2 and the buttocks c3 of the person C are translated so that the descending amount is 25 mm, and the palm ball part c4 of the tall person C is moved. It can be brought into contact with the operation point 11b of the accelerator pedal 11 or the like.

  Since the rising amount (25 mm) of the seat cushion 35, the eye point c1 and the waist part c2 is smaller than the average value (about 100 mm) of the eye point difference between the tall person B and the tall person C, the seat cushion 35 If the installation angle is not changed, even if it is considered that the proper eye point height increases by about 20 mm due to the backward movement of the eye point c1 of the tall person C and the inclination of the proper eye line L, the above-mentioned high The eye point c1 of the tall person C is positioned above the appropriate eye line L.

  Therefore, the seat cushion 35 is moved about 105 mm rearward from the intermediate position as described above, and the tilt angle α of the seat cushion 35 is reduced by lowering the rear end portion of the seat cushion 35 by the tilt driving unit 41. For example, by changing the angle from 18 ° to 21 ° and turning the upper body of the tall person C so as to be tilted backward with the operation point 11b of the step pedal including the accelerator pedal 11 as a fulcrum, The eye point c1 of the tall person C is moved downward to coincide with the appropriate eye line L.

  The downward movement amount of the eye point c1 resulting from the rotation of the upper body of the tall person C is the distance from the palm ball portion c4 on the sole that contacts the operation point 11b of the accelerator pedal 11 to the eye point c1. It is obtained by the product of tan β ′ · cos β. Note that β is an inclination angle of about 34 ° with respect to the horizontal line segment connecting the mother and child ball part a4 of the tall person C and the eye point a1, and β ′ is that the upper body of the tall person C rotates. The amount of change in the inclination angle β due to the above is 3 °.

  When the physique of the tall person C and the short person A is specifically calculated on the assumption that each part changes in proportion to the height (see FIG. 18), from the palm ball part c4 of the sole to the eye point c1 Is about 1300 mm, and the downward movement amount Q of the eye point c1 due to the rotation of the upper body of the tall person C is about 56 mm. Of the downward movement amount Q of the eye point c1 obtained by adding the eye point lowering amount (about 20 mm) due to the eyeline L tilting forward and the seat cushion 35 rising amount (25 mm). The total value (about 101 mm) substantially coincides with a value (about 100 mm) corresponding to the average value of the eye point difference between the tall person B and the tall person C. Accordingly, the seat cushion 35 is raised in accordance with the forward movement of the driver's seat 1 as described above, and the upper body of the short stature A is rotated, so that the palm ball portion c4 on the sole of the sole of the accelerator pedal 11 is The eye point c1 of the tall person C can be made to coincide with the appropriate eye line L in a state of being in contact with the operation point 11b. Even in this case, in order to rotate the upper body of the tall person B with the operation point 11b of the step pedal as a fulcrum in appearance, the seat cushion 35 is moved along with the swinging displacement of the seat cushion 35. Must be moved downward along the rear.

  The short person A is seated on the driver's seat 1 and the seat position adjusting mechanism 2 moves the driver's seat 1 to the front side of the vehicle body, and in conjunction with this operation, the drive link 31 of the floor lifting mechanism 6. Is shifted from the lying down state to the standing state, whereby the operation of displacing the floor board 5 to the raised position shown in FIGS. 4 and 11 is performed. The raising / lowering operation of the floor board 5 by the floor raising / lowering mechanism 6, specifically, a portion located about 250 mm behind the pivoting fulcrum 11 a of the foot pedal, which is the portion where the driver's buttocks are most likely to be placed As shown in FIG. 12, the upward / downward movement change operation is performed with the drive characteristic set by the lift amount of the seat cushion 35 corresponding to the forward movement of the driver's seat 1 and the upward / downward correction value corresponding to the change in the inclination angle α. It is configured to be executed based on.

  That is, as shown in FIG. 13, the occupant seated in the driver's seat 1 changes from the tall person B to the short person A, so that the seat cushion 35 is moved forward from the middle position of the front-rear movement range according to the difference in physique between the two. In the driving posture adjusting device configured to move about 105 mm to the side, raise the seat cushion 35 by about 25 mm, and change the inclination angle α of the seat cushion 35 from 18 ° to 15 ° in conjunction with this, As shown by the arrow M in FIG. 15, the heel part a <b> 3 of the short stature A moves together with the seat cushion 35.

  Further, as the inclination angle α of the seat cushion 35 changes from 18 ° to 15 ° and the rhino angle θ2 changes from 16.5 ° to 13.5 °, the inclination of the sole with respect to the horizontal line of the short stature A The angle θ4 changes from 51.5 ° to 48.5 °, and the heel part a3 of the short stature A moves further upward accordingly, so that the amount of rise of the seat cushion 35 and its inclination angle Based on the drive characteristics obtained by adding the elevation correction value corresponding to the change of α, the upward movement amount of the collar part a3 can be obtained.

  The upward movement amount (elevation correction value) of the heel part a3 resulting from the change in the inclination angle θ4 of the sole is the stepping height of the accelerator pedal 11, that is, the sole that comes into contact with the operation point 11b from the heel part a3. Is obtained by the product of the distance to the insulator ball part a4 and sin (θ4 ′) · cos (θ4). Note that θ4 ′ is the amount of change in the inclination angle θ4 of the sole corresponding to the change in the inclination angle α of the seat cushion 35. For example, in the embodiment shown in FIG. 13 in which the inclination angle θ4 of the sole is set to 51.5 °, the size of the sole of the short stature A is 230 mm, and from the toes to the mother-child ball part a4 of the sole Is 45 mm, the height of the accelerator pedal 11 in the short stature A is about 185 mm, and the change in the inclination angle θ4 of the sole is 3 °. The elevation correction value with respect to is about 9 mm.

  For example, as shown in FIG. 13, the buttocks a <b> 3 in a state before the short stature person A sits on the driver seat 1 in the intermediate position and moves the seat cushion 35 is the height of the tall person B seated on the driver seat 1. Although it is located slightly below the heel part b3, if the value is extremely small, it is ignored and both the heel parts a3, b3 are assumed to have the same height, and the seat cushion 35 is moved back and forth. The amount of lift of the seat cushion 35 when moving about 105 mm forward from the middle position of the movement range and the sole that changes in conjunction with the operation of changing the inclination angle α of the seat cushion 35 from 18 ° to 15 °. Based on the elevation correction value corresponding to the inclination angle θ4, it is possible to set drive characteristics representing the amount of elevation displacement of the floor board 5 by the floor elevation mechanism 6. If the floor board 5 is configured to be driven up and down via the floor lifting mechanism 6 based on the driving characteristics of the floor board 5, even if the physique of the occupant seated in the driver seat 1 changes, With the buttocks a3 and b3 placed on the floor board 5, the optimum position of the sole (the insulator ball parts b4 and c4) is accurately set with respect to the operation point 11b of the step pedal including the accelerator pedal 11 and the like. It is possible to abut, and the operability of the stepping pedal can be maintained in a good state.

  As described above, the buttocks a3 in a state before the short stature A sits in the driver seat 1 in the intermediate position and moves the seat cushion 35, and the buttocks of the tall stature B seated in the driver seat 1 When the vertical difference from b3 is small and both are at substantially the same height position, the upward movement amount of the floor board 5 corresponds to the upward movement amount corresponding to the forward movement of the seat cushion 35 and the elevation correction value. Therefore, the upward movement amount of the floor board 5 is always larger than the upward movement amount corresponding to the forward movement of the seat cushion 35. For this reason, the driving characteristics of the floor board 5 are set so that the vertical distance between the seat cushion 35 and the floor board 5 positioned below the seat cushion 35 decreases as the driver seat 1 moves forward. . In other words, the elevation correction value indicates the amount of change in the vertical distance between the seat cushion 35 and the floor board 5 that changes in accordance with the forward movement of the driver's seat 1. It is set to change linearly according to the movement.

  On the other hand, as shown in FIG. 14, when the occupant seated in the driver's seat 1 changes from a tall person B to a tall person C and the driver's seat 1 is moved about 105 mm backward, the arrow N in FIG. As shown, the heel portion c3 of the tall person C moves rearward and downward in parallel with the forward movement and upward movement of the seat cushion 35, and the inclination angle α of the seat cushion 35 is, for example, 18 ° to 21 °. The inclination angle θ4 of the sole with respect to the horizontal line of the tall person C changes from 51.5 ° to 54.5 °. Further, since the heel portion c3 of the tall person C moves further downward in response to the change in the inclination angle θ4 of the sole, the amount of lowering of the heel portion c3 corresponding to the downward movement of the seat cushion 35, and the seat Based on the elevation correction value corresponding to the change in the inclination angle α of the cushion 35, the downward movement amount of the collar part a3 can be obtained.

  The upward movement amount (elevation correction value) of the heel part c3 resulting from the change in the inclination angle θ4 of the sole is the stepping height of the accelerator pedal 11, that is, the sole that contacts the operation point 11b from the heel part c3. Is obtained by the product of the distance to the insulator ball part a4 and sin (θ4 ′) · cos (θ4). For example, in the embodiment shown in FIG. 15 where the inclination angle θ4 of the sole is set to 51.5 °, the size of the sole of the tall person C is 290 mm, and the distance from the toes to the mother-child ball part a4 of the sole Assuming that the distance is 55 mm, the height of the accelerator pedal 11 in the tall person C is about 235 mm, and the variation θ4 ′ in the inclination angle θ4 of the sole is 3 °. The elevation correction value for is about -11 mm.

  For example, as shown in FIG. 14, the heel portion c <b> 3 in a state before the tall person C sits on the driver seat 1 in the intermediate position and moves the seat cushion 35, and the tall person B seated on the driver seat 1. When the flange b3 is at substantially the same height, the downward movement amount of the seat cushion 35 when the seat cushion 35 is moved rearward by about 105 mm from the intermediate position of the front-rear movement range, and the inclination angle of the seat cushion 35 The floor board 5 is driven by adding the elevation correction value corresponding to the inclination angle θ4 of the sole that changes in conjunction with the operation of changing α from 18 ° to 21 ° and the difference between the buttocks b3 and c3. Characteristics can be obtained. If the floor board 5 is driven up and down by the floor elevating mechanism 6 based on this drive characteristic, even when the physique of the occupant seated in the driver's seat 1 changes, the flanges b3 and c3 are While placed on the floor board 5, the optimum position of the soles (the palm ball portions b4 and c4) can always be accurately brought into contact with the operation point 11b of the step pedal including the accelerator pedal 11 and the like. The operability of the pedal pedal can be maintained in a good state.

  As described above, the heel portion c3 in a state before the tall person C sits on the driver's seat 1 in the intermediate position and moves the seat cushion 35, and the heel portion of the tall person B who sits on the driver's seat 1 When the vertical difference from b3 is small and the two are at substantially the same height position, the downward movement amount of the floor board 5 corresponds to the downward movement amount corresponding to the backward movement of the seat cushion 35, and the elevation correction value. Therefore, the downward movement amount of the floor board 5 is always larger than the downward movement amount corresponding to the backward movement of the seat cushion 35. For this reason, the driving characteristic of the floor board 5 is set so that the vertical distance between the seat cushion 35 and the floor board 5 positioned below the seat cushion 35 increases as the driver seat 1 moves rearward. The up / down correction value indicates the amount of change in the vertical distance between the seat cushion 35 and the floor board 5 that changes in accordance with the backward movement of the driver's seat 1. It is set so as to change linearly according to.

  In the driving posture adjusting apparatus having the seat position adjusting mechanism 2 and the floor elevating mechanism 6 as described above, the seat position adjusting mechanism 2 moves the driver's seat 1 from the middle position of the front and rear movement range to the front side of the vehicle body. In addition to changing the inclination angle α of the seat cushion 35 with respect to the horizontal plane in a side view of the vehicle, as shown by the solid line in FIG. 12, the lift displacement amount of the seat cushion 35 corresponding to the forward movement of the driver's seat 1 When the floor board 5 is displaced up and down by the floor elevating mechanism 6 based on the first driving characteristic set by the elevating correction value corresponding to the change in the inclination angle α, the driver seat 1 The driver's seat 1 is slid back and forth according to the physique of the occupant seated on the seat, the seat cushion 35 is moved up and displaced, and the seat cushion 3 By changing the inclination angle α with respect to the horizontal plane of 5, the position of the waist part a2 representing the seating center of the occupant with respect to the seat cushion 35 is moved to the upper front part or the lower rear part corresponding to the height of the occupant, The standing angle of the upper body can be changed, and the eye point a1 can be matched with the appropriate eye line L while maintaining the seating posture of each occupant in an appropriate state by the synergistic action.

  In addition, the floor lifting mechanism 6 causes the floor lifting mechanism 6 to set the floor on the basis of drive characteristics set by the amount of vertical displacement of the seat cushion 35 corresponding to the forward / backward movement of the driver's seat 1 and the vertical correction value corresponding to the change in the inclination angle α. Since the movable floor portion composed of the board 5 is moved up and down, even when the occupant's physique changes, the optimal position of the sole (the lion ball portion) is always maintained while maintaining the seating posture of each occupant in an appropriate state. ) Can be accurately brought into contact with the operation point 11b of the step pedal including the accelerator pedal 11 and the like, and the operability of the step pedal can be maintained in a good state.

  Next, as shown by a broken line in FIG. 12, the adjustment operation of the driving posture by the driving posture adjustment apparatus having the seat position adjustment mechanism 2 in which the front and rear movement range of the seat cushion 35 of the driver seat 1 is set to 170 mm will be described below. Explained. In this driving posture adjusting device, the driver seat 1 moves forward because the forward moving range and the backward moving range of the seat cushion 35 are each shortened by about 20 mm compared to the first drive characteristic shown by the solid line in FIG. Since the amount of change in the appropriate eye point height due to the rearward movement is reduced by about 3 mm, in order to compensate for this, the vertical displacement amount of the seat cushion 35 linked to the longitudinal movement of the seat cushion 35 is increased, The maximum rising amount and the maximum lowering amount of the seat cushion 35 are each set to 28 mm.

  Further, since the upper body of the occupant seated in the driver's seat 1 moves in the same manner as in the case of the first drive characteristic indicated by the solid line in FIG. 12, the inclination angle α of the seat cushion 35 also moves in the same manner. A second drive characteristic is set. That is, the inclination angle α of the seat cushion 35 changes from 18 ° to 15 ° and the driver's seat 1 moves back and forth while the driver's seat 1 moves about 85 mm from the middle position of the front and rear movement range to the front side. The second drive characteristic is set so that the inclination angle α of the seat cushion 35 changes from 18 ° to 21 ° while moving about 185 mm from the middle position of the range toward the front side.

  On the other hand, the second drive characteristic of the floor board 3 raises the floor board 3 in response to the forward movement of the driver's seat 1, and the floor board 3 as the driver's seat 1 moves forward from the intermediate position. As the driver seat 1 moves backward from the intermediate position, the climb rate of the floor board 3 gradually decreases. It is set to be.

  FIG. 17 shows a state where the short stature person A seated in the driver's seat 1 has moved to the foremost position. In FIG. 17, the solid line indicates the sitting posture of the short stature A when the inclination angle α of the seat cushion 35 is changed based on the first drive characteristic indicated by the solid line in FIG. 12 shows the sitting posture of the short stature A when the inclination angle α of the seat cushion 35 is changed based on the second drive characteristic indicated by the broken line 12.

  When the inclination angle α of the seat cushion 35 is changed based on the first drive characteristic, the ankle angle θ1 is 90 °, the knee angle θ2 that is the bending angle between the lower knee A1 and the thigh A2 is 125 °, The appropriate angle of the roll angle θ5 between the upper body A3 and the thigh A2 from the hip bone part a2 to the shoulder part a3 is 95 ° and the thigh angle θ3 is the angle formed by the thigh part A2 with respect to the horizontal line. A posture suitable for pedal operation (appropriate posture) can be maintained for a long period of time by being 13.5 °, which is a value obtained by subtracting 1.5 ° from the inclination angle α (15 °) of the cushion 35. Is maintained.

  On the other hand, when the inclination angle α of the seat cushion 35 is changed based on the second drive characteristic, the ankle angle θ1 and the standing angle of the upper body A3 are set to be the same as those in the first drive characteristic. The knee angle θ2 changes from 125 ° to 130 °, and the rhino angle θ3 changes correspondingly from 13.5 ° to 10.5 °, which is different from the first driving characteristic. Yes. This is because, in the case of the second drive characteristic, by taking a seating posture in which the lower leg is stretched in response to the movement range from the middle position of the driver's seat 1 to the front and rear being shortened by 20 mm, This is because the lever ball part a4 is to be brought into contact with the operation point of the foot pedal.

  As described above, when the knee angle θ2 is changed by 5 ° and the rhino angle θ3 is changed by 3 °, the inclination angle θ4 of the sole is changed from 48.5 ° to 50.5 °, and this is supported. Then, the collar portion 41 moves downward by about 5 mm (= 185 mm × sin θ4 ′ × cos θ4). This means that the height of the floor board 5 is set to 5 mm compared to the case of the first driving characteristic in order to bring the palm ball part a4 of the sole into contact with the operation point of the foot pedal regardless of the posture change. This means that it is necessary to be positioned approximately downward, that is, the elevation correction value at the foremost position of the driver's seat 1 is approximately 4 mm. As a result, the raising / lowering driving characteristic of the floor board 5 obtained by the sum of the raising amount of the seat cushion 35 and the raising / lowering correction value is the rising rate of the floor board 3 as the driver seat 1 moves forward from the intermediate position. Is set to decrease gradually.

  FIG. 18 shows a state where a tall person C seated in the driver's seat 1 has moved to the rearmost position. In FIG. 18, the solid line indicates the sitting posture of the tall person C when the inclination angle α of the seat cushion 35 is changed based on the first drive characteristic indicated by the solid line in FIG. 12 shows the sitting posture of the tall person C when the inclination angle α of the seat cushion 35 is changed based on the second drive characteristic indicated by the broken line 12.

  When the inclination angle α of the seat cushion 35 is changed based on the second drive characteristic, the ankle angle θ1 and the standing angle of the upper body A3 are set to be the same as in the case of the first drive characteristic, but the knee angle θ2 Is different from the first drive characteristic in that the rhe angle θ3 changes from 19.5 ° to 24.5 ° correspondingly. In the case of the second drive characteristic, this is because the movement range from the intermediate position of the driver's seat 1 to the rear side is shortened by 20 mm and the seating posture with the lower leg bent is taken. This is because the lever ball portion c4 is to be brought into contact with the operation point of the foot pedal.

  As described above, when the knee angle θ2 is changed by 7 ° and the rhino angle θ3 is changed by 5 °, the inclination angle θ4 of the sole is changed from 54.5 ° to 52.5 °, and this is supported. Then, the collar portion c4 moves upward by about 7 mm (= 235 mm × sin θ4 ′ × cos θ4). This means that the height of the floor board 5 is set to 7 mm compared to the case of the first driving characteristic in order to bring the palm ball part a4 of the sole into contact with the operation point of the foot pedal regardless of the posture change. This means that it is necessary to be positioned approximately upward, that is, the elevation correction value at the rearmost position of the driver's seat 1 is 4 mm. As a result, the raising / lowering characteristics of the floor board 5 obtained by the sum of the raising amount of the seat cushion 35 and the raising / lowering correction value indicate that the lowering rate of the floor board 3 is increased as the driver's seat 1 moves rearward from the intermediate position. It is set to decrease gradually.

  As described above, the seat cushion adjustment mechanism 2 moves the seat cushion 35 upward in a side view of the vehicle in conjunction with the operation of moving the driver's seat 1 from the middle position of the front-rear movement range to the front side of the vehicle body. The seat surface angle is changed in a direction in which the inclination angle α with respect to the horizontal plane is reduced, and the floor lifting mechanism 6 raises the movable floor portion made of the floor board 5 in response to the forward movement of the driver seat 1, and the driver seat In the case where the floor board 5 is driven based on the second driving characteristic set so that the rate of increase of the floor board 5 gradually decreases as 1 moves forward from the intermediate position, Compared to the case where the seat cushion 35 and the floor board 5 of the driver seat 1 are driven based on the one drive characteristic, the range of movement of the driver seat 1 toward the front side is narrowed. The eye point a1 of the short stature A can be matched with the appropriate eye line L, and the optimum position of the soles (the palm ball portions a4 and b4) is always set to the operation point of the step pedal including the accelerator pedal 11 and the like. 11b can be brought into precise contact with each other, and the operability of the stepping pedal can be maintained in a good state.

  Therefore, there is an advantage that the driving posture can be appropriately adjusted in accordance with the physique of the driver without causing any adverse effects such as deterioration of the operability due to being too close to the steering wheel or the shift knob. Moreover, when a driver having a physique close to the tall person B who is most likely to be used adjusts the driving posture, the seating posture is substantially matched with the appropriate posture, There is an advantage that the position adjustment of the seat cushion 35 and the height adjustment of the floor board 5 can be appropriately executed.

  Further, as described above, the seat cushion 35 is moved downward in a side view of the vehicle in conjunction with the operation of moving the driver's seat 1 from the intermediate position of the front and rear movement range to the rear side of the vehicle body by the seat position adjusting mechanism 2. , The seating surface angle is changed in a direction in which the inclination angle α with respect to the horizontal plane is increased, and the floor lifting mechanism 6 lowers the movable floor portion composed of the floorboard 5 in response to the rearward movement of the driver's seat 1. When the driver's seat 1 is configured to drive the floor board 5 based on the second driving characteristic set so that the rate of increase of the floor board 5 gradually decreases as the driver seat 1 moves backward from the intermediate position, Compared to the case where the seat cushion 35 and the floor board 5 of the driver seat 1 are driven based on the first drive characteristic, the range of movement of the driver seat 1 to the rear side is narrower. On the other hand, the eye point c1 of the tall person C can be matched with the appropriate eye line L, and the optimum position of the soles (the palm ball portions c4 and b4) is always set to the pedal pedal including the accelerator pedal 11 and the like. There is an advantage that the operation point 11b can be contacted accurately, and the operability of the stepping pedal can be maintained in a good state.

  Therefore, there is an advantage that the driving posture can be adjusted appropriately according to the physique of the driver without causing any adverse effects such as deterioration of the operability due to being too far from the steering wheel or the shift knob. Moreover, when a driver having a physique close to the tall person B who is most likely to be used adjusts the driving posture, the seating posture is substantially matched with the appropriate posture, There is an advantage that the position adjustment of the seat cushion 35 and the height adjustment of the floor board 5 can be appropriately executed.

  Note that when the inclination angle α of the seat cushion 35 with respect to the horizontal plane is changed by the tilt driving portion 41 of the seat position adjusting mechanism 2, the seat cushion 35 and the seat back 36 erected at the rear thereof are integrally driven. Instead of the embodiment configured as described above, it is also possible to change only the inclination angle α of the seat cushion 35 while maintaining the standing angle of the seat back 36 at a constant value.

  However, in the above configuration, when the driver's seat 1 moves back and forth, the inclination angle of the upper body does not change, and only the bending angle θ3 of the thigh with respect to the upper body changes. In addition to being difficult to hold, there is a problem that the driver's eye point cannot be matched with the appropriate line L unless the forward / backward movement amount and the vertical movement amount of the seat cushion 35 are increased. Therefore, as shown in the above-described embodiment, when the inclination angle α with respect to the horizontal plane of the seat cushion 35 is changed by the tilt driving portion 41 of the seat position adjusting mechanism 2, the seat erected on the seat cushion 35 and the rear portion thereof. The back 36 is preferably configured to be driven integrally.

  The floor board 5 is replaced with an embodiment configured to drive the floor board 5 up and down by transmitting a rotational driving force from the drive cable 48 of the slide drive unit 40 to the drive cable 33 of the floor lifting mechanism 6. It is also possible to have a structure provided with a dedicated drive source for driving up and down. However, as shown in the above-described embodiment, when the front and rear positions and the vertical positions of the seat cushion 35 are adjusted by a single drive source (drive motor) and the floor board 5 is driven to move up and down, it is simple. There is an advantage that the position of the driver's seat 1 and the installation height of the floor board 5 can be adjusted simultaneously with a simple configuration.

  Further, the movable floor portion is constituted by the floor board 5 composed of the front board 15 and the rear board 17 connected by the hinge member 16, and the front end portion is pivotally supported on the rear lower surface of the front board 15. Instead of the embodiment configured to drive the floor board 5 up and down by raising and lowering the pair of left and right drive links 31, the movable floor portion may be configured by a floor board made of a single plate, In addition, the movable floor portion is configured to be displaced up and down by, for example, sliding an engaging pin protruding laterally from the lower surface of the movable floor portion along a guide groove formed to extend in an oblique direction. Also good.

  In addition, a connecting shaft serving as a swing fulcrum of the seat cushion 35 is provided at the rear portion of the seat cushion 35, and an engagement pin provided at the front portion of the seat cushion 35 is provided at the front portion of the seat rail 39. By sliding along the groove or the like, the front portion of the seat cushion 35 may be displaced up and down to change the seating surface angle.

  In the above-described embodiment, the driver's seat 1 is moved back and forth by the drive motor, and the rotational driving force is transmitted by the drive cables 48 and 34 to drive the floor board 5 up and down. The front and rear movement stroke of the seat cushion 35 may be transmitted to a wire wound between the driver's seat 1 side and the floor board side, and the floor board 5 may be driven up and down by this wire stroke. In this configuration, the seat cushion 35 can be moved back and forth using a human power that moves the waist back and forth while supporting the upper body, for example, by a passenger sitting on the driver's seat 1 holding the handle. In this case, by providing an urging member such as a coil spring that urges the seat cushion 35 forward with respect to the seat rail 39, for example, the seat in the rear position while the short stature person A remains seated on the driver's seat 1. It is desirable that the cushion 35 is configured to assist the movement of moving the cushion upward.

It is explanatory drawing which shows embodiment of the driving posture adjustment apparatus which concerns on this invention. It is a top view which shows the specific structure of a movable floor part. It is a perspective view which shows the specific structure of a movable floor part. It is front sectional drawing which shows the support structure of the rear side part of a floor board. It is front sectional drawing which shows the support structure of the rear side part of a floor board. It is front sectional drawing which shows the specific structure of a floor raising / lowering mechanism. It is side surface sectional drawing which shows the structure of a sheet | seat position adjustment mechanism. It is front sectional drawing which shows the structure of a sheet position adjustment mechanism. It is a perspective view which shows the specific structure of a power transmission mechanism. It is sectional drawing which shows the specific structure of a power transmission mechanism. It is explanatory drawing which shows the state which moved the driver's seat ahead. It is a graph which shows the drive characteristic etc. of a floor board. It is explanatory drawing which shows the state in which a tall person etc. sat on the driver's seat. It is explanatory drawing which shows the state in which a tall person etc. sat on the driver's seat. It is explanatory drawing which shows the upward movement amount of a floor board. It is explanatory drawing which shows the downward movement amount of a floor board. It is explanatory drawing which shows the sitting posture of a short stature. It is explanatory drawing which shows the sitting posture of a tall person.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Driver's seat 2 Seat position adjustment mechanism 3 Car body floor 5 Floor board 6 Floor raising / lowering mechanism 35 Seat cushion 36 Seat back

Claims (3)

  A seat position adjustment mechanism that moves the driver's seat back and forth within a preset range and adjusts the seat cushion installation height and seating angle according to the driver's front and back movement, and the front and rear position of the driver seat A driving posture adjusting device comprising a floor lifting mechanism that lifts and lowers the movable floor portion located at the foot of the occupant in conjunction with the adjustment operation of the vehicle. In conjunction with the movement from the intermediate position to the front side of the vehicle body, the seat cushion is moved upward in a side view of the vehicle, and the seating surface angle is changed in a direction in which the inclination angle with respect to the horizontal plane is reduced, The floor elevating mechanism raises the movable floor in response to the forward movement of the driver seat, and the driver seat moves forward from the intermediate position. Based on the set driving characteristics as increasing rate of the movable floor portion decreases gradually, driving position adjusting apparatus characterized by being configured to drive the movable floor portion.   A seat position adjustment mechanism that moves the driver's seat back and forth within a preset range and adjusts the seat cushion installation height and seating angle according to the driver's front and back movement, and the front and rear position of the driver seat A driving posture adjusting device comprising a floor lifting mechanism that lifts and lowers the movable floor portion located at the foot of the occupant in conjunction with the adjustment operation of the vehicle. In conjunction with the movement of the vehicle from the intermediate position to the rear side of the vehicle body, the seat cushion is moved downward in a side view of the vehicle, and the seating surface angle is changed in a direction in which the inclination angle with respect to the horizontal plane increases, The floor lifting mechanism lowers the movable floor portion in response to the backward movement of the driver seat, and the driver seat moves backward from the intermediate position. Based on the set driving characteristics as decrease rate of the movable floor portion decreases gradually, driving position adjusting apparatus characterized by being configured to drive the movable floor portion.   The seat cushion and the seat back erected on the rear portion thereof are integrally driven when the seat cushion is changed by the seat position adjustment mechanism with respect to the horizontal angle of the seat cushion. Item 3. The driving posture adjusting device according to Item 1 or 2.

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