WO2013058043A1 - Vehicle body structure of vehicle - Google Patents

Vehicle body structure of vehicle Download PDF

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Publication number
WO2013058043A1
WO2013058043A1 PCT/JP2012/073597 JP2012073597W WO2013058043A1 WO 2013058043 A1 WO2013058043 A1 WO 2013058043A1 JP 2012073597 W JP2012073597 W JP 2012073597W WO 2013058043 A1 WO2013058043 A1 WO 2013058043A1
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WO
WIPO (PCT)
Prior art keywords
vehicle body
vehicle
turning
body reference
reference point
Prior art date
Application number
PCT/JP2012/073597
Other languages
French (fr)
Japanese (ja)
Inventor
孝志 福重
皆川　裕介
小宮山　晋
知己 平林
Original Assignee
日産自動車株式会社
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Application filed by 日産自動車株式会社 filed Critical 日産自動車株式会社
Publication of WO2013058043A1 publication Critical patent/WO2013058043A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
    • B62D7/14—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
    • B62D7/15—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels
    • B62D7/159—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels characterised by computing methods or stabilisation processes or systems, e.g. responding to yaw rate, lateral wind, load, road condition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D61/00—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern

Definitions

  • the present invention relates to a vehicle body structure of a vehicle.
  • Patent Document 1 an automobile that includes a front wheel steering unit and a rear wheel steering unit and that steers the front wheels and the rear wheels in opposite phases when turning is known (for example, see Patent Document 1).
  • the rear part of the vehicle body located on the outer side of the turning may interfere with an obstacle due to an outer wheel difference that occurs when the rear wheel steering angle is controlled in the opposite phase to the front wheel steering angle. Therefore, there is a problem that the driver needs to drive while considering the outer ring difference.
  • the present invention has been made paying attention to the above-mentioned problem, and prevents the rear part of the vehicle from projecting outward from the front part of the vehicle when turning the vehicle, and allows driving without worrying about the difference between the outer wheels.
  • An object is to provide a vehicle body structure of a vehicle.
  • the vehicle body structure of the vehicle of the present invention includes a steering angle control means and a vehicle body.
  • the rudder angle control means steers the steering wheel so that the rudder angle of the rear wheel is relatively in phase and relatively larger than the rudder angle of the front wheel.
  • the vehicle body has an arbitrary position on the vehicle body that is centered on the center position of the minimum turning radius and that is on the side of the driver's seat or in front of the driver's seat and across the center position in the vehicle width direction. It has an outer shape that fits inside the maximum vehicle body reference circle that passes through the first vehicle body reference point set at the position.
  • the rudder angle control means steers the rear wheel so that the rudder angle of the rear wheel is a relatively large rudder angle in reverse phase with respect to the rudder angle of the front wheel, and the outer diameter of the vehicle body is the center of the minimum turning radius. It is within the maximum vehicle body reference circle with the position as the center point and passing through the first vehicle body reference point. As a result, the vehicle body turns without turning outside the maximum vehicle body reference circle while turning at the maximum steering angle.
  • the steering wheel is steered so that the steering angle of the rear wheel is a relatively large steering angle in the opposite phase with respect to the steering angle of the front wheel, so that it is positioned on the outer side of the turning than the traveling locus of the rear wheel located on the outer side of the turning.
  • the traveling trajectory of the front wheel is on the inside in the turning direction. Therefore, the minimum turning radius can be reduced, and so-called turning performance during turning can be improved.
  • the vehicle body position farthest from the center position of the minimum turning radius (the portion passing through the outermost side from the rotation center in the vehicle body) is the first while turning at the maximum steering angle. It becomes the car body reference point. Therefore, if the driver confirms that the first vehicle body reference point does not contact an obstacle or the like, the rear portion of the vehicle located behind the vehicle from the first vehicle body reference point does not contact the obstacle. As a result, at the time of turning the vehicle, it is possible to prevent the rear portion of the vehicle from projecting outward from the front portion of the vehicle and to drive without worrying about the difference between the outer wheels.
  • FIG. 1 is a schematic plan view showing a vehicle to which a vehicle body structure of Example 1 is applied.
  • 1 is a system structure diagram showing a vehicle steering system to which a vehicle body structure of Example 1 is applied.
  • FIG. 3 is a schematic plan view showing a right turn in the vehicle of the first embodiment.
  • FIG. 3 is a schematic plan view showing the left turning time in the vehicle of the first embodiment.
  • It is a plane schematic diagram which shows the vehicle to which the vehicle body structure of Example 2 is applied.
  • FIG. 6 is a schematic plan view showing a right turn in the vehicle of the second embodiment.
  • FIG. 6 is a schematic plan view showing a left-turning time in the vehicle of the second embodiment.
  • FIG. 10 is a schematic plan view showing a vehicle to which the vehicle body structure of Example 3 is applied.
  • FIG. 10 is a schematic plan view showing a vehicle to which the vehicle body structure of Example 4 is applied.
  • FIG. 10 is a schematic plan view showing a vehicle to which the vehicle body structure of
  • the configuration of the vehicle body structure of the vehicle according to the first embodiment will be described separately as “configuration of the vehicle body outer structure” and “configuration of the steering system”.
  • FIG. 1 is a schematic plan view showing a vehicle to which the vehicle body structure of the first embodiment is applied.
  • the configuration of the vehicle body outside structure will be described with reference to FIG.
  • the automobile (vehicle) 1 includes a vehicle body 2, a left front wheel 3L, a right front wheel 3R, a left rear wheel 4L, and a right rear wheel 4R.
  • the vehicle body 2 forms an outline of the automobile 1 and is a steering unit (steering angle control) that individually steers the driving motor (not shown) that is a driving source, the left and right front wheels 3L and 3R, and the left and right rear wheels 4L and 4R.
  • Means) 5 (see FIG. 2), a driver's seat 7a on which the driver A sits, and a passenger seat 7b on which the passenger B sits.
  • the outer shape of the vehicle body 2 has a shape that fits inside the maximum right vehicle body reference circle 11 and the maximum left vehicle body reference circle 21. That is, the vehicle body 2 has a vehicle body right side surface 2a in a plan view substantially in an arc shape along the left maximum vehicle body reference circle 21 and a vehicle body left side surface 2b in a plan view in a substantially arc shape along the right maximum vehicle body reference circle 11. It was.
  • the “right maximum vehicle body reference circle” is a circle that passes through the left vehicle body reference point 10 with the right rotation center position P when turning right (clockwise) at the minimum turning radius as the center point.
  • the “left vehicle body reference point” is the first vehicle body reference point when turning right, and is the front or side position of the driver's seat (driver's seat) 7a and is the vehicle center axis in the vehicle width direction ( The vehicle width direction center position) is set at an arbitrary position on the vehicle body 2 on the opposite side of the right-turn center position P with the O in between.
  • the left vehicle body reference point 10 is set at the corner between the vehicle body left side surface 2b and the vehicle body front surface 2c.
  • the “left-side maximum vehicle body reference circle” is a circle that passes through the right vehicle body reference point 20 with the left-turn center position Q when turning leftward (counterclockwise) with the minimum turning radius as the center point. .
  • the “right vehicle body reference point” is the first vehicle body reference point when turning counterclockwise, and is the front or side position of the driver's seat (driver's seat) 7a and is the vehicle center axis O in the vehicle width direction. This is a point that is set to an arbitrary position on the vehicle body 2 on the opposite side of the center position Q of the counterclockwise rotation.
  • the right vehicle body reference point 20 is set at the corner between the vehicle body right side surface 2a and the vehicle body front surface 2c.
  • the left front wheel 3L and the right front wheel 3R are provided symmetrically at the front of the vehicle body 2 and are steered by the steering unit 5.
  • the left rear wheel 4L and the right rear wheel 4R are provided symmetrically at the rear of the vehicle body 2 and are steered by the steering unit 5.
  • the distance between the left and right rear wheels 4L, 4R (rear wheel tread) is shorter than the distance between the left and right front wheels 3L, 3R (front wheel tread).
  • FIG. 2 is a system structure diagram illustrating a vehicle steering system to which the vehicle body structure of the first embodiment is applied.
  • the vehicle body 2 of the first embodiment is equipped with a steering unit 5 as a steering angle control means.
  • the steering unit 5 includes a steering handle 51, a steering angle sensor 52, a front wheel steering motor 53, a front wheel rack and pinion mechanism 54, front wheel left and right rods 55a and 55b, a rear wheel steering motor 56, a rear wheel rack and A pinion mechanism 57, rear wheel left and right rods 58a and 58b, and a steering controller 59 are provided.
  • the steering handle 51 is disposed in the passenger compartment and is rotated by a driver A.
  • the steering angle sensor 52 detects the rotation angle of the steering handle 51 and inputs the detected angle signal to the steering controller 59.
  • the front wheel steering motor 53 is driven based on a control signal from the steering controller 59 to drive the front wheel rack and pinion mechanism 54.
  • the front wheel rack and pinion mechanism 54 is driven by a front wheel steering motor 53 to steer the left and right front wheels 3L and 3R in a turning direction.
  • the front wheel left rod 55a has one end connected to the front wheel rack and pinion mechanism 54 and the other end connected to the left front wheel 3L.
  • the front wheel right rod 55b has one end connected to the front wheel rack and pinion mechanism 54 and the other end connected to the right front wheel 3R.
  • the rear wheel steering motor 56 is driven based on a control signal from the steering controller 59 to drive the rear wheel rack and pinion mechanism 57.
  • the rear wheel rack and pinion mechanism 57 is driven by a rear wheel steering motor 56 to steer the left and right rear wheels 4L and 4R in a direction opposite to the turning direction.
  • the rear wheel left rod 58a has one end connected to the rear wheel rack and pinion mechanism 57 and the other end connected to the left rear wheel 4L.
  • the rear wheel right rod 58b has one end connected to the rear wheel rack and pinion mechanism 57 and the other end connected to the right rear wheel 4R.
  • the steering controller 59 determines the turning direction and turning angle of the left and right front wheels 3L, 3R and the left and right rear wheels 4L, 4R according to the steering angle (turning angle) of the steering handle 51 detected by the steering angle sensor 52.
  • the control signal is output to the front wheel steering motor 53 and the rear wheel steering motor 56.
  • the steering controller 59 adjusts the turning direction of the left and right front wheels 3L, 3R to the turning direction, and adjusts the turning direction of the left and right rear wheels 4L, 4R to the opposite phase, that is, the direction opposite to the turning direction.
  • the steering angles of the left and right front wheels 3L, 3R and the left and right rear wheels 4L, 4R are set such that the steering angles of the left and right rear wheels 4L, 4R are relatively larger than the steering angles of the left and right front wheels 3L, 3R.
  • the left and right rear wheels 4L, 4R are steered in a direction opposite to the turning direction at a rudder angle larger than the front wheel rudder angle.
  • FIG. 3 is a schematic plan view illustrating the right-turning of the vehicle according to the first embodiment.
  • the steering handle 51 In order to turn the automobile 1 to the right (clockwise direction) with the minimum turning radius, the steering handle 51 is rotated to the maximum in the right direction. At this time, the steering angle of the steering handle 51 is detected by the steering angle sensor 52, and the steering controller 59 outputs a predetermined control signal according to the detected angle. Thereby, the left and right front wheels 3L and 3R are steered so as to be steered in the turning direction.
  • the left and right rear wheels 4L and 4R are steered in the opposite phase to the steering direction of the left and right front wheels 3L and 3R, and the steering angle (steering angle) ⁇ 1 of the left and right rear wheels 4L and 4R is the left and right front wheels 3L and 4R. Steering is performed such that the steering angle is relatively larger than the steering angle (steering angle) ⁇ 2 of 3R.
  • the left and right front wheels 3L, 3R have a maximum steering angle in the right direction, which is the turning direction.
  • the left and right rear wheels 4L, 4R have a maximum steering angle in the left direction opposite to the turning direction.
  • the automobile 1 turns in the right direction along the minimum turning radius.
  • the left side surface 2b of the vehicle body facing the outer turning side of the vehicle body 2 has a shape that fits inside the maximum right vehicle body reference circle 11. Therefore, the left side surface 2b of the vehicle body facing the outside of the vehicle body 2 does not protrude outside the maximum vehicle body reference circle 11 on the right side, that is, outside the rotation during the rotation.
  • the vehicle body position farthest from the right rotation center position P which is the center position of the minimum turning radius (the portion that passes through the outermost side from the rotation center in the vehicle body 2) is left. It becomes the vehicle body reference point 10.
  • the driver A confirms that the left vehicle body reference point 10 does not contact an obstacle or the like located on the outer side of the turning, the rear part of the vehicle behind the left vehicle body reference point 10 becomes an obstacle or the like. There will be no contact.
  • the steering angle ⁇ 1 of the left and right rear wheels 4L, 4R becomes a relatively large steering angle in an opposite phase to the steering angle ⁇ 2 of the left and right front wheels 3L, 3R. It is steered as follows. For this reason, the traveling locus ⁇ of the left front wheel 3L located on the outer side of the turning is on the inner side in the turning direction (position close to the right turning center position P) than the traveling locus ⁇ of the left rear wheel 4L located on the outer side of the turning. Therefore, the minimum turning radius can be reduced, and so-called turning performance during turning can be improved.
  • the left vehicle body reference point 10 that is farthest from the right turning center position P is an angle between the vehicle body left side surface 2b and the vehicle body front surface 2c that are highly visible from the driver A. Set in the department. Therefore, since the position with excellent visibility from the driver A is used as a reference, the vehicle width interval can be easily grasped, and the driving can be facilitated.
  • the steering angle ⁇ 1 of the left and right rear wheels 4L, 4R is opposite in phase to the steering angle ⁇ 2 of the left and right front wheels 3L, 3R. Is positioned in front of the vehicle with respect to the center position in the longitudinal direction of the vehicle. For this reason, it is possible to improve the drivability during turning in the right direction without sacrificing the passenger compartment space.
  • the vehicle body left side surface 2b in a plan view has a substantially arc shape along the right maximum vehicle body reference circle 11. Therefore, the center part in the front-rear direction of the left side surface 2b of the vehicle body does not dent toward the vehicle center axis O, so that a large cabin space can be secured and a so-called egg-shaped beautiful modeling line can be obtained.
  • FIG. 4 is a schematic plan view illustrating the left-turning in the vehicle of the first embodiment.
  • the steering handle 51 In order to turn the automobile 1 to the left (counterclockwise direction) with the minimum turning radius, the steering handle 51 is rotated to the left in the maximum. At this time, the steering angle of the steering handle 51 is detected by the steering angle sensor 52, and the steering controller 59 outputs a predetermined control signal according to the detected angle. Thereby, the left and right front wheels 3L and 3R are steered so as to be steered in the turning direction.
  • the left and right rear wheels 4L and 4R are steered in the opposite phase to the steering direction of the left and right front wheels 3L and 3R, and the steering angle (steering angle) ⁇ 1 of the left and right rear wheels 4L and 4R is the left and right front wheels 3L and 4R. Steering is performed such that the steering angle is relatively larger than the steering angle (steering angle) ⁇ 2 of 3R.
  • the left and right front wheels 3L, 3R have the maximum steering angle in the left direction, which is the turning direction. Further, the left and right rear wheels 4L, 4R have a maximum steering angle in the right direction opposite to the turning direction. Then, the automobile 1 turns in the left direction along the minimum turning radius.
  • the right side surface 2a of the vehicle body facing the outside of the vehicle body 2 has a shape that fits inside the left maximum vehicle body reference circle 21. Therefore, the right side surface 2a of the vehicle body facing the outside of the turning of the vehicle body 2 does not protrude outside the left maximum vehicle body reference circle 21, that is, outside of the turning during turning.
  • the vehicle body position farthest from the left turning center position Q which is the center position of the minimum turning radius (the portion that passes through the outermost side from the turning center in the vehicle body 2) is right. It becomes the vehicle body reference point 20.
  • the driver A confirms that the right vehicle body reference point 20 does not contact an obstacle or the like located on the outer side of the turning, the vehicle body rear portion behind the right vehicle body reference point 20 becomes an obstacle or the like. There will be no contact.
  • the steering angle ⁇ 1 of the left and right rear wheels 4L, 4R becomes a relatively large steering angle in an opposite phase to the steering angle ⁇ 2 of the left and right front wheels 3L, 3R. It is steered as follows. For this reason, the traveling locus ⁇ of the right front wheel 3R located on the outer side of the turning is on the inner side in the turning direction (position close to the left turning center position Q) than the traveling locus ⁇ of the right rear wheel 4R located on the outer side of the turning. Therefore, the minimum turning radius can be reduced, and so-called turning performance during turning can be improved.
  • the right vehicle body reference point 20 that is the farthest from the left turning center position Q is an angle between the vehicle body right side surface 2a and the vehicle body front surface 2c that are highly visible from the driver A. Set in the department. Therefore, since the position with excellent visibility from the driver A is used as a reference, the vehicle width interval can be easily grasped, and the driving can be facilitated.
  • the steering angle ⁇ 1 of the left and right rear wheels 4L, 4R is a reverse steering phase and a relatively large steering angle than the steering angle ⁇ 2 of the left and right front wheels 3L, 3R. Is positioned in front of the vehicle with respect to the center position in the longitudinal direction of the vehicle. For this reason, it is possible to improve the drivability during turning in the left direction without sacrificing the passenger compartment space.
  • the vehicle body right side surface 2a in a plan view is substantially arcuate along the left maximum vehicle body reference circle 21. Therefore, the center part in the front-rear direction of the right side surface 2a of the vehicle body does not dent toward the vehicle center axis O, so that a large cabin space can be secured and a so-called egg-shaped beautiful modeling line can be obtained.
  • Steering unit 5 for steering so that the steering angle ⁇ 1 of the left and right rear wheels 4L, 4R has a relatively large steering angle in reverse phase with respect to the steering angle ⁇ 2 of the left and right front wheels 3L, 3R.
  • the vehicle body 2 has a configuration in which the side surfaces of the vehicle body (the vehicle body right side surface 2a and the vehicle body left side surface 2b) in a plan view are substantially arcuate. For this reason, while being able to ensure vehicle interior space widely, a beautiful modeling line can be obtained.
  • Example 2 is an example in which the outer diameter shape of the vehicle body is set inside the maximum vehicle body reference circle and within the minimum vehicle body reference circle.
  • FIG. 5 is a schematic plan view showing a vehicle to which the vehicle body structure of the second embodiment is applied.
  • the vehicle body 2A of the automobile (vehicle) 1A fits inside the right maximum vehicle body reference circle 11 and the left maximum vehicle body reference circle 21 and outside the right minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22. It has an outer shape that fits. That is, the vehicle body 2A protrudes inside the right minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22 by making the distance between the vehicle body right side surface 2a and the vehicle body left side surface 2b smaller than that in the first embodiment. No shape.
  • the “right-side maximum vehicle body reference circle” and the “left-side maximum vehicle body reference circle” are the same as those in the first embodiment, and thus the description thereof is omitted.
  • the left and right vehicle body reference points 10 and 20 are respectively set at the vehicle width maximum position.
  • the “right minimum vehicle body reference circle” is a circle that passes through the right vehicle body reference point 20 with the right rotation center position P when turning right (clockwise) with the minimum turning radius as the center point.
  • the “right vehicle body reference point” is the second vehicle body reference point when turning right, and the first vehicle body when turning right across the vehicle center axis (vehicle width direction center position) O in the vehicle width direction. This is a point set at the vehicle width maximum position on the opposite side to the left vehicle body reference point 10 as the reference point.
  • the right vehicle body reference point 20 is set on the right side surface 2a of the vehicle body at the intersection of the left maximum vehicle body reference circle 21 and the right minimum vehicle body reference circle 12.
  • the right vehicle body reference point 20 becomes the first vehicle body reference point when turning left and at the same time the second vehicle body reference point when turning right.
  • the right vehicle body reference point 20 is set near the vehicle body front surface 2c so that the left largest vehicle body reference circle 21 and the right smallest vehicle body reference circle 12 partially overlap.
  • the “left minimum vehicle body reference circle” is a circle that passes through the left vehicle body reference point 10 with the left rotation center position Q when turning left (counterclockwise) with the minimum turning radius as the center point.
  • the “left vehicle body reference point” is the second vehicle body reference point when turning counterclockwise, and the first vehicle body when turning counterclockwise across the vehicle center axis (vehicle width direction center position) O in the vehicle width direction. This is a point set at the vehicle width maximum position on the opposite side of the right vehicle body reference point 20 as the reference point.
  • the left vehicle body reference point 10 is set on the left side surface 2b of the vehicle body at the intersection of the right maximum vehicle body reference circle 11 and the left minimum vehicle body reference circle 22.
  • the left vehicle body reference point 10 becomes the first vehicle body reference point when turning right and at the same time the second vehicle body reference point when turning left. Further, in the second embodiment, the left vehicle body reference point 10 is set near the vehicle body front surface 2c so that the right maximum vehicle body reference circle 11 and the left minimum vehicle body reference circle 22 partially overlap.
  • FIG. 6 is a schematic plan view showing the right turn of the vehicle according to the second embodiment.
  • the steering handle 51 In order to turn the automobile 1A to the right (clockwise direction) with the minimum turning radius, the steering handle 51 is rotated to the maximum in the right direction. Thereby, the left and right front wheels 3L and 3R have the maximum steering angle in the right direction which is the turning direction. Further, the left and right rear wheels 4L, 4R have a maximum steering angle in the left direction which is opposite to the turning direction. Further, at this time, the steering angle ⁇ 1 of the left and right rear wheels 4L, 4R is relatively larger than the steering angle ⁇ 2 of the left and right front wheels 3L, 3R.
  • the automobile 1A turns in the right direction along the minimum turning radius.
  • the right side surface 2a of the vehicle body facing the inside of the turning of the vehicle body 2A has a shape that fits outside the minimum right vehicle body reference circle 12. Therefore, the right side surface 2a of the vehicle body that faces the inside of the turning of the vehicle body 2A does not protrude inside the right minimum vehicle body reference circle 12, that is, inside the turning during turning.
  • the vehicle body position closest to the right rotation center position P which is the center position of the minimum turning radius (the portion that passes the innermost from the rotation center in the vehicle body 2A) is It becomes the vehicle body reference point 20.
  • the driver A confirms that the right vehicle body reference point 20 does not contact an obstacle or the like located on the inside of the turning, the vehicle body rear portion behind the right vehicle body reference point 20 becomes an obstacle or the like. There will be no contact.
  • the steering angle ⁇ 1 of the left and right rear wheels 4L, 4R becomes a relatively large steering angle with an opposite phase to the steering angle ⁇ 2 of the left and right front wheels 3L, 3R. It is steered as follows. For this reason, the traveling locus ⁇ of the right front wheel 3R located inside the turning is on the inside in the turning direction (position close to the right turning center position P) than the traveling locus ⁇ of the right rear wheel 4R located inside the turning. Therefore, the minimum turning radius can be reduced, and so-called turning performance during turning can be improved.
  • the vehicle body 2A of the second embodiment has a shape in which the vehicle body left side surface 2b facing the outside of the rotation fits inside the maximum vehicle body reference circle 11 on the right side when turning rightward. Therefore, when the automobile 1A turns rightward along the minimum turning radius, it is possible to prevent the rear portion of the vehicle from projecting outward from the front portion of the vehicle and to drive without worrying about the difference between the outer wheels. .
  • FIG. 7 is a schematic plan view illustrating the left-turning in the vehicle of the second embodiment.
  • the steering handle 51 is rotated to the left in the maximum.
  • the left and right front wheels 3L, 3R have the maximum steering angle in the left direction, which is the turning direction.
  • the left and right rear wheels 4L and 4R have a maximum steering angle in the right direction opposite to the turning direction.
  • the steering angle ⁇ 1 of the left and right rear wheels 4L and 4R is larger than the steering angle ⁇ 2 of the left and right front wheels 3L and 3R. Is a relatively large steering angle.
  • the automobile 1A turns in the left direction along the minimum turning radius.
  • the left side surface 2 b of the vehicle body facing the inside of the turning of the vehicle body 2 ⁇ / b> A has a shape that fits outside the minimum left vehicle body reference circle 22. Therefore, the left side surface 2b of the vehicle body facing the inside of the turning of the vehicle body 2A does not protrude inside the left minimum vehicle body reference circle 22, that is, inside of the turning during turning.
  • the vehicle body position closest to the left turning center position Q which is the center position of the minimum turning radius (the portion that passes the innermost from the turning center in the vehicle body 2A) is left. It becomes the vehicle body reference point 10.
  • the driver A confirms that the left vehicle body reference point 10 does not contact an obstacle or the like located inside the turning, the vehicle body rear portion behind the left vehicle body reference point 10 becomes an obstacle or the like. There will be no contact.
  • the steering angle ⁇ 1 of the left and right rear wheels 4L, 4R becomes a relatively large steering angle with an opposite phase to the steering angle ⁇ 2 of the left and right front wheels 3L, 3R. It is steered as follows. For this reason, the traveling locus ⁇ of the left front wheel 3L located on the inner side of the turning is on the inner side in the turning direction (position close to the left turning center position Q) than the traveling locus ⁇ of the left rear wheel 4L located on the inner side of the turning. Therefore, the minimum turning radius can be reduced, and so-called turning performance during turning can be improved.
  • the left and right front wheels 3L, 3R and the left and right rear wheels 4L, 4R are turned to the left at the maximum steering angle, and when the automobile 1A is turned to the right along the minimum turning radius, the turning performance is improved. It is possible to prevent the rear portion of the vehicle from projecting to the inside of the turn from the front portion of the vehicle and to drive without worrying about the difference between the inner wheels.
  • the vehicle body 2A of the second embodiment has a shape in which the right side surface 2a of the vehicle body facing the outside of the rotation fits inside the left maximum vehicle body reference circle 21 when turning leftward. For this reason, when the automobile 1A turns leftward along the minimum turning radius, it is possible to prevent the rear portion of the vehicle from projecting outward from the front portion of the vehicle and to drive without worrying about the difference between the outer wheels. .
  • the left vehicle body reference point 10 and the right vehicle body reference point 20 are set at the vehicle width maximum position,
  • the vehicle body 2A is centered on the center position of the minimum turning radius when turning right (right turning center position P), and the left vehicle body reference point 10 (first vehicle body when turning right) across the vehicle center axis O.
  • the right vehicle body reference point 20 (the second vehicle body reference point when turning right) set to the vehicle width maximum position on the opposite side to the reference point) is located outside the right minimum vehicle body reference circle 12 and Centered at the center position of the minimum turning radius when turning left (left turning center position Q) and opposite the right vehicle body reference point 20 (first vehicle body reference point when turning left) across the vehicle center axis O
  • the vehicle body has an outer shape that fits outside the minimum left vehicle body reference circle 22 that passes through the left vehicle body reference point 10 (the second vehicle body reference point when turning counterclockwise) set at the maximum vehicle width side position. For this reason, at the time of turning of the vehicle, it is possible to prevent the rear portion of the vehicle from projecting to the inside of the turning from the front portion of the vehicle, and it is possible to drive without worrying about the difference between the inner rings.
  • the third embodiment is an example in which the left and right vehicle body reference points are set to the installation positions of the fender mirrors located on the left and right sides of the vehicle body.
  • FIG. 8 is a schematic plan view showing a vehicle to which the vehicle body structure of the third embodiment is applied.
  • the vehicle body 2B of the automobile 1B according to the third embodiment is located outside the right maximum vehicle body reference circle 11 and the left maximum vehicle body reference circle 21 and outside the right shape minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22. Presents.
  • the left and right vehicle body reference points 10 and 20 used as a reference when setting the right largest vehicle body reference circle 11, the left largest vehicle body reference circle 21, the right smallest vehicle body reference circle 12, and the left smallest vehicle body reference circle 22 are Set to the setting position of the fender mirror F provided on the left-right side.
  • the fender mirror F is set at a position where the visibility of the driver A is high, by setting the left and right vehicle body reference points 10 and 20 at the setting position of the fender mirror F, the drivability at the time of turning is further improved. be able to.
  • the fender mirror F protrudes from the vehicle body right side surface 2a and the vehicle body left side surface 2b to the vehicle body side. Therefore, when setting a circle centered on the center position of the minimum turning radius when turning right (right turning center position P), the right maximum vehicle body reference circle 11 passing through the left vehicle body reference point 10 becomes relatively large, The minimum vehicle body reference circle 12 is relatively small. On the other hand, when setting a circle centered on the center position of the minimum turning radius when turning counterclockwise (left turning center position Q), the left maximum vehicle body reference circle 21 passing through the right vehicle body reference point 20 is relatively large. The left minimum vehicle body reference circle 22 is relatively small. Thereby, a vehicle body width dimension becomes large and a vehicle interior space can be ensured widely, or the design freedom of a vehicle body shape can be improved.
  • the left and right vehicle body reference points 10 and 20 serving as the first vehicle body reference point and the second vehicle body reference point are set to the installation positions of the fender mirrors F positioned on the left and right of the vehicle body 2B. For this reason, it is possible to improve the drivability during turning, secure a large vehicle body width dimension to widen the vehicle compartment space, and improve the degree of freedom in designing the vehicle body shape.
  • the right vehicle body reference point is set at a position where the right maximum vehicle body reference circle and the left minimum vehicle body reference circle do not overlap
  • the left vehicle body reference point is set at a position where the left maximum vehicle body reference circle and the right minimum vehicle body reference circle do not overlap.
  • the vehicle body 2C of the automobile 1C according to the fourth embodiment is located outside the right maximum vehicle body reference circle 11 and the left maximum vehicle body reference circle 21 and outside the right minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22. Presents.
  • the left and right vehicle body reference points 10 and 20 used as a reference when setting the right largest vehicle body reference circle 11, the left largest vehicle body reference circle 21, the right smallest vehicle body reference circle 12, and the left smallest vehicle body reference circle 22 are the left and right front wheels 3L. , 3R is set between the front wheel shaft 9A and the rear wheel shaft 9B supporting the left and right rear wheels 4L, 4R. That is, the left vehicle body reference point 10 is set at the intersection position of the right maximum vehicle body reference circle 11 and the left minimum vehicle body reference circle 22. At this time, the right maximum vehicle body reference circle 11 and the left minimum vehicle body reference circle 22 overlap. In order to avoid this, the left vehicle body reference point 10 is set on the vehicle rear side with respect to the front wheel shaft 9A.
  • the right vehicle body reference point 20 is set at the intersection of the left maximum vehicle body reference circle 21 and the right minimum vehicle body reference circle 12. At this time, the left maximum vehicle body reference circle 21 and the right minimum vehicle body reference circle 12 overlap. In order to avoid this, the right vehicle body reference point 20 is set on the vehicle rear side with respect to the front wheel shaft 9A.
  • the vehicle body 2C has an outer shape that fits inside the right maximum vehicle body reference circle 11 and the left maximum vehicle body reference circle 21 and that falls outside the right minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22,
  • the radii of the right minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22 are increased.
  • the overlapping area of the right maximum vehicle body reference circle 11 and the left minimum vehicle body reference circle 22 and the overlapping area of the left maximum vehicle body reference circle 21 and the right minimum vehicle body reference circle 12 are increased.
  • the vehicle width dimension which can be ensured reduces in the center part of the front-back direction of the vehicle body 2C.
  • the distance between the left and right front wheels 3L and 3R is determined. Also, it is necessary to increase the distance between the left vehicle body reference point 10 and the right vehicle body reference point 20. In addition, the distance from the driver A to the left and right vehicle body reference points 10 and 20 is increased, and there is a concern that the visibility may be lowered.
  • the left and right vehicle body reference points 10, 20 are set between the front wheel shaft 9A that supports the left and right front wheels 3L, 3R and the rear wheel shaft 9B that supports the left and right rear wheels 4L, 4R.
  • the radii of the right minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22 can be reduced.
  • the overlapping area of the right maximum vehicle body reference circle 11 and the left minimum vehicle body reference circle 22 and the overlapping area of the left maximum vehicle body reference circle 21 and the right minimum vehicle body reference circle 12 can be reduced. Space can be secured and comfort is improved.
  • left and right vehicle body reference points 10 and 20 are set at positions close to the driver A, the visibility of the left and right vehicle body reference points 10 and 20 can be improved, and the drivability during turning can be further improved. .
  • the left and right vehicle body reference points 10 and 20 serving as the first vehicle body reference point and the second vehicle body reference point are a front wheel shaft 9A that supports the left and right front wheels 3L and 3R and a rear wheel shaft that supports the left and right rear wheels 4L and 4R. It was set as the structure set between 9B. For this reason, a large vehicle interior space can be secured and the comfortability is improved. Further, the visibility of the left and right vehicle body reference points 10 and 20 can be enhanced, and the drivability during turning can be further improved.
  • the fifth embodiment is an example in which the left and right vehicle body reference points are set to the installation positions of the door mirrors located on the left and right sides of the vehicle body.
  • FIG. 10 is a schematic plan view showing a vehicle to which the vehicle body structure of the fifth embodiment is applied.
  • the vehicle body 2D of the automobile 1D according to the fifth embodiment is located outside the right maximum vehicle body reference circle 11 and the left maximum vehicle body reference circle 21 and outside the right minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22. Presents.
  • the left and right vehicle body reference points 10 and 20 used as a reference when setting the right maximum vehicle body reference circle 11, the left maximum vehicle body reference circle 21, the right minimum vehicle body reference circle 12, and the left minimum vehicle body reference circle 22 are Set to the setting position of the door mirror D provided on the left-right side.
  • the door mirror D is set on the side of the driver A at a highly visible position.
  • the door mirror D is provided between the front wheel shaft 9A and the rear wheel shaft 9B.
  • the distance from the driver A becomes shorter and easier to see than when these are set on the fender mirror. For this reason, the further improvement of drivability can be aimed at. Further, by setting the left and right vehicle body reference points 10 and 20 at a position close to the driver A, the setting position is shifted to the rear side of the vehicle as compared with the case where these are set on the fender mirror.
  • the radius of the right minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22 can be reduced, the overlapping area of the right maximum vehicle body reference circle 11 and the left minimum vehicle body reference circle 22, and the left maximum vehicle body reference circle The overlapping area between 21 and the right minimum vehicle body reference circle 12 is reduced. As a result, a large vehicle compartment space can be secured and the comfortability can be improved.
  • the steering system is a so-called stay-by-wire system in which electronic control is performed, but the present invention is not limited to this.
  • a steering handle and front and rear wheels may be connected via a link or the like and mechanically controlled (linkage type). Further, the steering of the rear wheels is not limited to using hydraulic pressure.
  • the vehicle is an electric vehicle that uses a traveling motor as a traveling drive source, but is not limited thereto. It may be an engine vehicle using an engine as a drive source, a hybrid vehicle using an engine and a motor as drive sources, or the like.

Abstract

Provided is a vehicle body structure of a vehicle capable of being driven without concern for the difference between tracks followed by front and back outer wheels by preventing a vehicle rear from projecting to the outside of a turn further than a vehicle front when a vehicle makes the turn. This vehicle body structure of a vehicle comprises a steering angle control means (5) which makes the steering angle (θ1) of rear wheels (4L, 4R) relatively larger than the steering angle (θ2) of front wheels (3L, 3R) in opposite phases, and a vehicle body (2) which has an outer shape that fits inside a right-hand side maximum vehicle body reference circle (11) when turning right and fits inside a left-hand side maximum vehicle body reference circle (21) when turning left. The right-hand side maximum vehicle body reference circle (11) has the center position (P) of a right turn minimum turning radius as a center point, and passes a left vehicle body reference point (10) set on the vehicle body (2) on the opposite side to the center position (P) across a vehicle width direction center position (O). The left-hand side maximum vehicle body reference circle (21) has the center position (Q) of a left turn minimum turning radius as a center point, and passes a right vehicle body reference point (20) set on the vehicle body (2) on the opposite side to the center position (Q) across the vehicle width direction center position (O).

Description

車両の車体構造Vehicle body structure
　本発明は、車両の車体構造に関するものである。 The present invention relates to a vehicle body structure of a vehicle.
　従来、前輪操舵ユニットと後輪操舵ユニットとを備え、旋廻時、前輪と後輪を逆位相に操舵する自動車が知られている（例えば、特許文献１参照）。 Conventionally, an automobile that includes a front wheel steering unit and a rear wheel steering unit and that steers the front wheels and the rear wheels in opposite phases when turning is known (for example, see Patent Document 1).
特開昭61-191474号公報JP-A-61-191474
　しかしながら、従来の自動車にあっては、後輪操舵角を前輪操舵角に対して逆位相に制御したときに生じる外輪差によって、旋廻外側に位置する車体後部が障害物と干渉するおそれがある。そのため、ドライバーは外輪差を考慮しながら運転する必要があるという問題があった。 However, in a conventional automobile, the rear part of the vehicle body located on the outer side of the turning may interfere with an obstacle due to an outer wheel difference that occurs when the rear wheel steering angle is controlled in the opposite phase to the front wheel steering angle. Therefore, there is a problem that the driver needs to drive while considering the outer ring difference.
　本発明は、上記問題に着目してなされたもので、車両旋廻時、車両後部が車両前部よりも旋廻外側に張り出すことを防止し、外輪差を気にすることなく運転することができる車両の車体構造を提供することを目的とする。 The present invention has been made paying attention to the above-mentioned problem, and prevents the rear part of the vehicle from projecting outward from the front part of the vehicle when turning the vehicle, and allows driving without worrying about the difference between the outer wheels. An object is to provide a vehicle body structure of a vehicle.
　上記目的を達成するため、本発明の車両の車体構造は、舵角制御手段と、車体と、を備えている。
　前記舵角制御手段は、前輪の舵角よりも後輪の舵角が逆位相で相対的に大舵角となるように操舵する。
　前記車体は、最小回転半径の中心位置を中心点とし、且つ、運転席側方又は運転席前方であって、車幅方向中心位置をはさんで前記中心点と反対側の車体上の任意の位置に設定する第１車体基準点を通る最大車体基準円の内側に収まる外側形状を有する。 In order to achieve the above object, the vehicle body structure of the vehicle of the present invention includes a steering angle control means and a vehicle body.
The rudder angle control means steers the steering wheel so that the rudder angle of the rear wheel is relatively in phase and relatively larger than the rudder angle of the front wheel.
The vehicle body has an arbitrary position on the vehicle body that is centered on the center position of the minimum turning radius and that is on the side of the driver's seat or in front of the driver's seat and across the center position in the vehicle width direction. It has an outer shape that fits inside the maximum vehicle body reference circle that passes through the first vehicle body reference point set at the position.
　よって、舵角制御手段により、前輪の舵角よりも後輪の舵角が逆位相で相対的に大舵角となるように操舵されると共に、車体の外径形状が、最小回転半径の中心位置を中心点とし、且つ、第１車体基準点を通る最大車体基準円の内側に収まる。これにより、最大舵角にて旋廻する間、車体は最大車体基準円の外側に出ることなく旋廻する。
すなわち、前輪の舵角よりも後輪の舵角が逆位相で相対的に大舵角となるように操舵されることで、旋廻外側に位置する後輪の走行軌跡よりも、旋廻外側に位置する前輪の走行軌跡が旋廻方向内側になる。そのため、最小回転半径を小さくでき、いわゆる旋廻時の小回り性能を向上することができる。
一方、車体を最大車体基準円の内側に収めることで、最大舵角にて旋廻する間、最小回転半径の中心位置から最も遠い車体位置（車体において旋廻中心から最も外側を通る部分）が第１車体基準点となる。
そのため、ドライバーはこの第１車体基準点が障害物等に接触しないことを確認すれば、この第１車体基準点よりも車両後方にある車体後部は、障害物に接触しないことになる。この結果、車両旋廻時、車両後部が車両前部よりも旋廻外側に張り出すことを防止し、外輪差を気にすることなく運転することができる。 Therefore, the rudder angle control means steers the rear wheel so that the rudder angle of the rear wheel is a relatively large rudder angle in reverse phase with respect to the rudder angle of the front wheel, and the outer diameter of the vehicle body is the center of the minimum turning radius. It is within the maximum vehicle body reference circle with the position as the center point and passing through the first vehicle body reference point. As a result, the vehicle body turns without turning outside the maximum vehicle body reference circle while turning at the maximum steering angle.
In other words, the steering wheel is steered so that the steering angle of the rear wheel is a relatively large steering angle in the opposite phase with respect to the steering angle of the front wheel, so that it is positioned on the outer side of the turning than the traveling locus of the rear wheel located on the outer side of the turning. The traveling trajectory of the front wheel is on the inside in the turning direction. Therefore, the minimum turning radius can be reduced, and so-called turning performance during turning can be improved.
On the other hand, by placing the vehicle body inside the maximum vehicle body reference circle, the vehicle body position farthest from the center position of the minimum turning radius (the portion passing through the outermost side from the rotation center in the vehicle body) is the first while turning at the maximum steering angle. It becomes the car body reference point.
Therefore, if the driver confirms that the first vehicle body reference point does not contact an obstacle or the like, the rear portion of the vehicle located behind the vehicle from the first vehicle body reference point does not contact the obstacle. As a result, at the time of turning the vehicle, it is possible to prevent the rear portion of the vehicle from projecting outward from the front portion of the vehicle and to drive without worrying about the difference between the outer wheels.
実施例１の車体構造を適用した車両を示す平面模式図である。1 is a schematic plan view showing a vehicle to which a vehicle body structure of Example 1 is applied. 実施例１の車体構造を適用した車両の操舵システムを示すシステム構造図である。1 is a system structure diagram showing a vehicle steering system to which a vehicle body structure of Example 1 is applied. 実施例１の車両における右旋廻時を示す平面模式図である。FIG. 3 is a schematic plan view showing a right turn in the vehicle of the first embodiment. 実施例１の車両における左旋廻時を示す平面模式図である。FIG. 3 is a schematic plan view showing the left turning time in the vehicle of the first embodiment. 実施例２の車体構造を適用した車両を示す平面模式図である。It is a plane schematic diagram which shows the vehicle to which the vehicle body structure of Example 2 is applied. 実施例２の車両における右旋廻時を示す平面模式図である。FIG. 6 is a schematic plan view showing a right turn in the vehicle of the second embodiment. 実施例２の車両における左旋廻時を示す平面模式図である。FIG. 6 is a schematic plan view showing a left-turning time in the vehicle of the second embodiment. 実施例３の車体構造を適用した車両を示す平面模式図である。FIG. 10 is a schematic plan view showing a vehicle to which the vehicle body structure of Example 3 is applied. 実施例４の車体構造を適用した車両を示す平面模式図である。FIG. 10 is a schematic plan view showing a vehicle to which the vehicle body structure of Example 4 is applied. 実施例５の車体構造を適用した車両を示す平面模式図である。FIG. 10 is a schematic plan view showing a vehicle to which the vehicle body structure of Example 5 is applied.
　以下、本発明の車両の車体構造を実現する最良の形態を、図面に示す実施例１～実施例５に基づいて説明する。 Hereinafter, the best mode for realizing the vehicle body structure of the vehicle of the present invention will be described based on Examples 1 to 5 shown in the drawings.
　まず、構成を説明する。
実施例１の車両の車体構造の構成を、「車体外側構造の構成」、「操舵システムの構成」、に分けて説明する。 First, the configuration will be described.
The configuration of the vehicle body structure of the vehicle according to the first embodiment will be described separately as “configuration of the vehicle body outer structure” and “configuration of the steering system”.
　[車体外側構造の構成]
　図１は、実施例１の車体構造を適用した車両を示す平面模式図である。
以下、図１に基づき車体外側構造の構成を説明する。 [Configuration of the vehicle body outer structure]
FIG. 1 is a schematic plan view showing a vehicle to which the vehicle body structure of the first embodiment is applied.
Hereinafter, the configuration of the vehicle body outside structure will be described with reference to FIG.
　実施例１における自動車（車両）１は、図１に示すように、車体２と、左前輪３Ｌと、右前輪３Ｒと、左後輪４Ｌと、右後輪４Ｒと、を備えている。 As shown in FIG. 1, the automobile (vehicle) 1 according to the first embodiment includes a vehicle body 2, a left front wheel 3L, a right front wheel 3R, a left rear wheel 4L, and a right rear wheel 4R.
　前記車体２は、自動車１の外郭を形成し、走行駆動源である走行用モータ（図示せず）、左右前輪３Ｌ,３Ｒ及び左右後輪４Ｌ,４Ｒを個別に操舵する操舵ユニット（舵角制御手段）５（図２参照）、ドライバーＡが着座する運転席シート７ａ、同乗者Ｂが着座する助手席シート７ｂ、を装備している。 The vehicle body 2 forms an outline of the automobile 1 and is a steering unit (steering angle control) that individually steers the driving motor (not shown) that is a driving source, the left and right front wheels 3L and 3R, and the left and right rear wheels 4L and 4R. Means) 5 (see FIG. 2), a driver's seat 7a on which the driver A sits, and a passenger seat 7b on which the passenger B sits.
　また、この車体２の外側形状は、右側最大車体基準円１１及び左側最大車体基準円２１の内側に収まる形状を呈している。すなわち、車体２は、平面視における車体右側面２ａを左側最大車体基準円２１に沿ったほぼ円弧状とすると共に、平面視における車体左側面２ｂを右側最大車体基準円１１に沿ったほぼ円弧状とした。
ここで「右側最大車体基準円」とは、最小回転半径にて右方向（時計回り方向）に旋廻する際の右旋廻中心位置Ｐを中心点とし、左車体基準点１０を通る円である。なお、「左車体基準点」とは、右旋廻時の第１車体基準点であり、運転席シート（運転席）７ａの前方位置又は側方位置であって、車幅方向の車両中心軸線（車幅方向中心位置）Ｏをはさんで右旋廻中心位置Ｐと反対側の車体２上の任意の位置に設定する点である。ここでは、この左車体基準点１０を、車体左側面２ｂと車体前面２ｃとの角部に設定する。
また、「左側最大車体基準円」とは、最小回転半径にて左方向（反時計回り方向）に旋廻する際の左旋廻中心位置Ｑを中心点とし、右車体基準点２０を通る円である。なお、「右車体基準点」とは、左旋廻時の第１車体基準点であり、運転席シート（運転席）７ａの前方位置又は側方位置であって、車幅方向の車両中心軸線Ｏをはさんで左旋廻中心位置Ｑと反対側の車体２上の任意の位置に設定する点である。ここでは、この右車体基準点２０を、車体右側面２ａと車体前面２ｃとの角部に設定する。 Further, the outer shape of the vehicle body 2 has a shape that fits inside the maximum right vehicle body reference circle 11 and the maximum left vehicle body reference circle 21. That is, the vehicle body 2 has a vehicle body right side surface 2a in a plan view substantially in an arc shape along the left maximum vehicle body reference circle 21 and a vehicle body left side surface 2b in a plan view in a substantially arc shape along the right maximum vehicle body reference circle 11. It was.
Here, the “right maximum vehicle body reference circle” is a circle that passes through the left vehicle body reference point 10 with the right rotation center position P when turning right (clockwise) at the minimum turning radius as the center point. The “left vehicle body reference point” is the first vehicle body reference point when turning right, and is the front or side position of the driver's seat (driver's seat) 7a and is the vehicle center axis in the vehicle width direction ( The vehicle width direction center position) is set at an arbitrary position on the vehicle body 2 on the opposite side of the right-turn center position P with the O in between. Here, the left vehicle body reference point 10 is set at the corner between the vehicle body left side surface 2b and the vehicle body front surface 2c.
The “left-side maximum vehicle body reference circle” is a circle that passes through the right vehicle body reference point 20 with the left-turn center position Q when turning leftward (counterclockwise) with the minimum turning radius as the center point. . The “right vehicle body reference point” is the first vehicle body reference point when turning counterclockwise, and is the front or side position of the driver's seat (driver's seat) 7a and is the vehicle center axis O in the vehicle width direction. This is a point that is set to an arbitrary position on the vehicle body 2 on the opposite side of the center position Q of the counterclockwise rotation. Here, the right vehicle body reference point 20 is set at the corner between the vehicle body right side surface 2a and the vehicle body front surface 2c.
　前記左前輪３Ｌ及び前記右前輪３Ｒは、車体２の前部に左右対称に設けられ、操舵ユニット５によって操舵される。 The left front wheel 3L and the right front wheel 3R are provided symmetrically at the front of the vehicle body 2 and are steered by the steering unit 5.
　前記左後輪４Ｌ及び前記右後輪４Ｒは、車体２の後部に左右対称に設けられ、操舵ユニット５によって操舵される。ここで、左右後輪４Ｌ,４Ｒの間隔（後輪トレッド）は、左右前輪３Ｌ,３Ｒの間隔（前輪トレッド）よりも短くなっている。 The left rear wheel 4L and the right rear wheel 4R are provided symmetrically at the rear of the vehicle body 2 and are steered by the steering unit 5. Here, the distance between the left and right rear wheels 4L, 4R (rear wheel tread) is shorter than the distance between the left and right front wheels 3L, 3R (front wheel tread).
　[操舵システムの構成]
図２は、実施例１の車体構造を適用した車両の操舵システムを示すシステム構造図である。 [Configuration of steering system]
FIG. 2 is a system structure diagram illustrating a vehicle steering system to which the vehicle body structure of the first embodiment is applied.
　実施例１の車体２には、舵角制御手段として、操舵ユニット５が装備されている。
　前記操舵ユニット５は、ステアリングハンドル５１と、操舵角センサ５２と、前輪操舵モータ５３と、前輪ラックアンドピニオン機構５４と、前輪左右ロッド５５ａ,５５ｂと、後輪操舵モータ５６と、後輪ラックアンドピニオン機構５７と、後輪左右ロッド５８ａ,５８ｂと、操舵コントローラ５９と、を有している。 The vehicle body 2 of the first embodiment is equipped with a steering unit 5 as a steering angle control means.
The steering unit 5 includes a steering handle 51, a steering angle sensor 52, a front wheel steering motor 53, a front wheel rack and pinion mechanism 54, front wheel left and right rods 55a and 55b, a rear wheel steering motor 56, a rear wheel rack and A pinion mechanism 57, rear wheel left and right rods 58a and 58b, and a steering controller 59 are provided.
　前記ステアリングハンドル５１は、車室内に配置され、ドライバーＡにより回動操作される。前記操舵角センサ５２は、ステアリングハンドル５１の回動角度を検出し、検出した角度信号を操舵コントローラ５９に入力する。 The steering handle 51 is disposed in the passenger compartment and is rotated by a driver A. The steering angle sensor 52 detects the rotation angle of the steering handle 51 and inputs the detected angle signal to the steering controller 59.
　前記前輪操舵モータ５３は、操舵コントローラ５９からの制御信号に基づいて駆動し、前輪ラックアンドピニオン機構５４を駆動する。前記前輪ラックアンドピニオン機構５４は、前輪操舵モータ５３により駆動して、左右前輪３Ｌ,３Ｒを旋廻方向に転舵するよう操舵する。前記前輪左ロッド５５ａは、前輪ラックアンドピニオン機構５４に一端が接続し、他端が左前輪３Ｌに連結されている。前記前輪右ロッド５５ｂは、前輪ラックアンドピニオン機構５４に一端が接続し、他端が右前輪３Ｒに連結されている。 The front wheel steering motor 53 is driven based on a control signal from the steering controller 59 to drive the front wheel rack and pinion mechanism 54. The front wheel rack and pinion mechanism 54 is driven by a front wheel steering motor 53 to steer the left and right front wheels 3L and 3R in a turning direction. The front wheel left rod 55a has one end connected to the front wheel rack and pinion mechanism 54 and the other end connected to the left front wheel 3L. The front wheel right rod 55b has one end connected to the front wheel rack and pinion mechanism 54 and the other end connected to the right front wheel 3R.
　前記後輪操舵モータ５６は、操舵コントローラ５９からの制御信号に基づいて駆動し、後輪ラックアンドピニオン機構５７を駆動する。前記後輪ラックアンドピニオン機構５７は、後輪操舵モータ５６により駆動して、左右後輪４Ｌ,４Ｒを旋廻方向とは逆方向に転舵するよう操舵する。前記後輪左ロッド５８ａは、後輪ラックアンドピニオン機構５７に一端が接続し、他端が左後輪４Ｌに連結されている。前記後輪右ロッド５８ｂは、後輪ラックアンドピニオン機構５７に一端が接続し、他端が右後輪４Ｒに連結されている。 The rear wheel steering motor 56 is driven based on a control signal from the steering controller 59 to drive the rear wheel rack and pinion mechanism 57. The rear wheel rack and pinion mechanism 57 is driven by a rear wheel steering motor 56 to steer the left and right rear wheels 4L and 4R in a direction opposite to the turning direction. The rear wheel left rod 58a has one end connected to the rear wheel rack and pinion mechanism 57 and the other end connected to the left rear wheel 4L. The rear wheel right rod 58b has one end connected to the rear wheel rack and pinion mechanism 57 and the other end connected to the right rear wheel 4R.
　前記操舵コントローラ５９は、操舵角センサ５２により検出されたステアリングハンドル５１の操舵角（回動角度）に応じて、左右前輪３Ｌ,３Ｒ及び左右後輪４Ｌ,４Ｒの転舵方向及び転舵角度を演算し、前輪操舵モータ５３及び後輪操舵モータ５６に制御信号を出力する。
このとき、操舵コントローラ５９は、左右前輪３Ｌ,３Ｒの転舵方向を旋廻方向に合わせ、左右後輪４Ｌ,４Ｒの転舵方向を逆位相、つまり旋廻方向と逆方向に合わせる。また、左右前輪３Ｌ,３Ｒの舵角よりも左右後輪４Ｌ,４Ｒの舵角の方が相対的に大舵角となるように、左右前輪３Ｌ,３Ｒ及び左右後輪４Ｌ,４Ｒの舵角制御を行う。すなわち、左右後輪４Ｌ,４Ｒは、前輪舵角よりも大きい舵角で、旋廻方向と逆方向に転舵する。 The steering controller 59 determines the turning direction and turning angle of the left and right front wheels 3L, 3R and the left and right rear wheels 4L, 4R according to the steering angle (turning angle) of the steering handle 51 detected by the steering angle sensor 52. The control signal is output to the front wheel steering motor 53 and the rear wheel steering motor 56.
At this time, the steering controller 59 adjusts the turning direction of the left and right front wheels 3L, 3R to the turning direction, and adjusts the turning direction of the left and right rear wheels 4L, 4R to the opposite phase, that is, the direction opposite to the turning direction. Further, the steering angles of the left and right front wheels 3L, 3R and the left and right rear wheels 4L, 4R are set such that the steering angles of the left and right rear wheels 4L, 4R are relatively larger than the steering angles of the left and right front wheels 3L, 3R. Take control. That is, the left and right rear wheels 4L, 4R are steered in a direction opposite to the turning direction at a rudder angle larger than the front wheel rudder angle.
　次に、作用を説明する。
実施例１の車両の車体構造における作用を、「右旋廻時走行作用」、「左旋廻時走行作用」に分けて説明する。 Next, the operation will be described.
The operation of the vehicle body structure of the vehicle according to the first embodiment will be described by dividing it into “running operation when turning right” and “running operation when turning left”.
　［右旋廻時走行作用］
　図３は、実施例１の車両における右旋廻時を示す平面模式図である。 [Running action when turning right]
FIG. 3 is a schematic plan view illustrating the right-turning of the vehicle according to the first embodiment.
　自動車１を最小回転半径にて右方向（時計回り方向）に旋廻させるには、ステアリングハンドル５１を右方向に最大に回動する。このとき、ステアリングハンドル５１の操舵角を操舵角センサ５２により検出し、操舵コントローラ５９は、この検出角度に応じて所定の制御信号を出力する。これにより、左右前輪３Ｌ,３Ｒは、旋廻方向に転舵するように操舵される。また、左右後輪４Ｌ,４Ｒは、左右前輪３Ｌ,３Ｒの転舵方向と逆位相に転舵すると共に、左右後輪４Ｌ,４Ｒの舵角（転舵角）θ１の方が左右前輪３Ｌ,３Ｒの舵角（転舵角）θ２よりも相対的に大舵角となるように操舵される。 In order to turn the automobile 1 to the right (clockwise direction) with the minimum turning radius, the steering handle 51 is rotated to the maximum in the right direction. At this time, the steering angle of the steering handle 51 is detected by the steering angle sensor 52, and the steering controller 59 outputs a predetermined control signal according to the detected angle. Thereby, the left and right front wheels 3L and 3R are steered so as to be steered in the turning direction. The left and right rear wheels 4L and 4R are steered in the opposite phase to the steering direction of the left and right front wheels 3L and 3R, and the steering angle (steering angle) θ1 of the left and right rear wheels 4L and 4R is the left and right front wheels 3L and 4R. Steering is performed such that the steering angle is relatively larger than the steering angle (steering angle) θ2 of 3R.
　すなわち、図３に示すように、左右前輪３Ｌ,３Ｒは旋廻方向である右方向に最大舵角になる。また、左右後輪４Ｌ,４Ｒは旋廻方向と逆方向の左方向に最大舵角となる。そして、自動車１は最小回転半径に沿って右方向に旋廻走行を行う。
ここで、車体２の旋廻外側に臨む車体左側面２ｂは、右側最大車体基準円１１の内側に収まる形状となっている。そのため、車体２の旋廻外側に臨む車体左側面２ｂは、旋廻中、この右側最大車体基準円１１の外側、つまり旋廻外側にはみ出ることはない。 That is, as shown in FIG. 3, the left and right front wheels 3L, 3R have a maximum steering angle in the right direction, which is the turning direction. The left and right rear wheels 4L, 4R have a maximum steering angle in the left direction opposite to the turning direction. Then, the automobile 1 turns in the right direction along the minimum turning radius.
Here, the left side surface 2b of the vehicle body facing the outer turning side of the vehicle body 2 has a shape that fits inside the maximum right vehicle body reference circle 11. Therefore, the left side surface 2b of the vehicle body facing the outside of the vehicle body 2 does not protrude outside the maximum vehicle body reference circle 11 on the right side, that is, outside the rotation during the rotation.
　つまり、最大舵角にて車体２を右方向に旋廻する間、最小回転半径の中心位置である右旋廻中心位置Ｐから最も遠い車体位置（車体２において旋廻中心から最も外側を通る部分）が左車体基準点１０となる。
これにより、ドライバーＡはこの左車体基準点１０が旋廻外側に位置する障害物等に接触しないことを確認すれば、この左車体基準点１０よりも車両後方にある車体後部は、障害物等に接触しないことになる。 In other words, while turning the vehicle body 2 to the right at the maximum steering angle, the vehicle body position farthest from the right rotation center position P, which is the center position of the minimum turning radius (the portion that passes through the outermost side from the rotation center in the vehicle body 2) is left. It becomes the vehicle body reference point 10.
As a result, if the driver A confirms that the left vehicle body reference point 10 does not contact an obstacle or the like located on the outer side of the turning, the rear part of the vehicle behind the left vehicle body reference point 10 becomes an obstacle or the like. There will be no contact.
　一方、自動車１が最小回転半径に沿って旋廻走行を行う際、左右前輪３Ｌ,３Ｒの舵角θ２よりも左右後輪４Ｌ,４Ｒの舵角θ１が逆位相で相対的に大舵角となるように操舵される。このため、旋廻外側に位置する左後輪４Ｌの走行軌跡αよりも、旋廻外側に位置する左前輪３Ｌの走行軌跡βが旋廻方向内側（右旋廻中心位置Ｐに近い位置）になる。そのため、最小回転半径を小さくでき、いわゆる旋廻時の小回り性能を向上することができる。 On the other hand, when the automobile 1 makes a turn along the minimum turning radius, the steering angle θ1 of the left and right rear wheels 4L, 4R becomes a relatively large steering angle in an opposite phase to the steering angle θ2 of the left and right front wheels 3L, 3R. It is steered as follows. For this reason, the traveling locus β of the left front wheel 3L located on the outer side of the turning is on the inner side in the turning direction (position close to the right turning center position P) than the traveling locus α of the left rear wheel 4L located on the outer side of the turning. Therefore, the minimum turning radius can be reduced, and so-called turning performance during turning can be improved.
　この結果、左右前輪３Ｌ,３Ｒ及び左右後輪４Ｌ,４Ｒを最大舵角にて右方向に旋廻し、自動車１が最小回転半径に沿って右方向に旋廻する際、小回り性能を向上させると共に、車両後部が車両前部よりも旋廻外側に張り出すことを防止し、外輪差を気にすることなく運転することができる。 As a result, when the left and right front wheels 3L and 3R and the left and right rear wheels 4L and 4R are turned to the right at the maximum steering angle and the automobile 1 is turned to the right along the minimum turning radius, the turning performance is improved. It is possible to prevent the rear portion of the vehicle from projecting outward from the front portion of the vehicle and to drive without worrying about the difference between the outer wheels.
　特に、実施例１の自動車１では、旋廻中、右旋廻中心位置Ｐから最も遠い位置である左車体基準点１０を、ドライバーＡからの視認性が優れる車体左側面２ｂと車体前面２ｃとの角部に設定している。そのため、ドライバーＡからの視認性の優れる位置を基準とするため、車幅間隔がつかみやすくなり、より運転しやすくすることができる。 In particular, in the automobile 1 of the first embodiment, during turning, the left vehicle body reference point 10 that is farthest from the right turning center position P is an angle between the vehicle body left side surface 2b and the vehicle body front surface 2c that are highly visible from the driver A. Set in the department. Therefore, since the position with excellent visibility from the driver A is used as a reference, the vehicle width interval can be easily grasped, and the driving can be facilitated.
　また、実施例１の車体２では、左右前輪３Ｌ,３Ｒの舵角θ２よりも左右後輪４Ｌ,４Ｒの舵角θ１が逆位相で相対的に大舵角とするため、右旋廻中心位置Ｐは、車両前後方向中央位置よりも車両前方に位置することとなる。このため、車室空間を犠牲にすることなく右方向の旋廻時運転性を向上することができる。 Further, in the vehicle body 2 of the first embodiment, the steering angle θ1 of the left and right rear wheels 4L, 4R is opposite in phase to the steering angle θ2 of the left and right front wheels 3L, 3R. Is positioned in front of the vehicle with respect to the center position in the longitudinal direction of the vehicle. For this reason, it is possible to improve the drivability during turning in the right direction without sacrificing the passenger compartment space.
　さらに、実施例１の車体２では、平面視における車体左側面２ｂが右側最大車体基準円１１に沿ったほぼ円弧状となっている。そのため、車体左側面２ｂの前後方向中央部分が車両中心軸線Ｏ側にへこむことがなくなり、車室空間を広く確保することができると共に、いわゆる卵型の美しい造形ラインを得ることができる。 Furthermore, in the vehicle body 2 of the first embodiment, the vehicle body left side surface 2b in a plan view has a substantially arc shape along the right maximum vehicle body reference circle 11. Therefore, the center part in the front-rear direction of the left side surface 2b of the vehicle body does not dent toward the vehicle center axis O, so that a large cabin space can be secured and a so-called egg-shaped beautiful modeling line can be obtained.
　［左旋廻時走行作用］
　図４は、実施例１の車両における左旋廻時を示す平面模式図である。 [Running action when turning counterclockwise]
FIG. 4 is a schematic plan view illustrating the left-turning in the vehicle of the first embodiment.
　自動車１を最小回転半径にて左方向（反時計回り方向）に旋廻させるには、ステアリングハンドル５１を左方向に最大に回動する。このとき、ステアリングハンドル５１の操舵角を操舵角センサ５２により検出し、操舵コントローラ５９は、この検出角度に応じて所定の制御信号を出力する。これにより、左右前輪３Ｌ,３Ｒは、旋廻方向に転舵するように操舵される。また、左右後輪４Ｌ,４Ｒは、左右前輪３Ｌ,３Ｒの転舵方向と逆位相に転舵すると共に、左右後輪４Ｌ,４Ｒの舵角（転舵角）θ１の方が左右前輪３Ｌ,３Ｒの舵角（転舵角）θ２よりも相対的に大舵角となるように操舵される。 In order to turn the automobile 1 to the left (counterclockwise direction) with the minimum turning radius, the steering handle 51 is rotated to the left in the maximum. At this time, the steering angle of the steering handle 51 is detected by the steering angle sensor 52, and the steering controller 59 outputs a predetermined control signal according to the detected angle. Thereby, the left and right front wheels 3L and 3R are steered so as to be steered in the turning direction. The left and right rear wheels 4L and 4R are steered in the opposite phase to the steering direction of the left and right front wheels 3L and 3R, and the steering angle (steering angle) θ1 of the left and right rear wheels 4L and 4R is the left and right front wheels 3L and 4R. Steering is performed such that the steering angle is relatively larger than the steering angle (steering angle) θ2 of 3R.
　すなわち、図４に示すように、左右前輪３Ｌ,３Ｒは旋廻方向である左方向に最大舵角になる。また、左右後輪４Ｌ,４Ｒは旋廻方向と逆方向の右方向に最大舵角となる。そして、自動車１は最小回転半径に沿って左方向に旋廻走行を行う。
ここで、車体２の旋廻外側に臨む車体右側面２ａは、左側最大車体基準円２１の内側に収まる形状となっている。そのため、車体２の旋廻外側に臨む車体右側面２ａは、旋廻中、この左側最大車体基準円２１の外側、つまり旋廻外側にはみ出ることはない。 That is, as shown in FIG. 4, the left and right front wheels 3L, 3R have the maximum steering angle in the left direction, which is the turning direction. Further, the left and right rear wheels 4L, 4R have a maximum steering angle in the right direction opposite to the turning direction. Then, the automobile 1 turns in the left direction along the minimum turning radius.
Here, the right side surface 2a of the vehicle body facing the outside of the vehicle body 2 has a shape that fits inside the left maximum vehicle body reference circle 21. Therefore, the right side surface 2a of the vehicle body facing the outside of the turning of the vehicle body 2 does not protrude outside the left maximum vehicle body reference circle 21, that is, outside of the turning during turning.
　つまり、最大舵角にて車体２を左方向に旋廻する間、最小回転半径の中心位置である左旋廻中心位置Ｑから最も遠い車体位置（車体２において旋廻中心から最も外側を通る部分）が右車体基準点２０となる。
これにより、ドライバーＡはこの右車体基準点２０が旋廻外側に位置する障害物等に接触しないことを確認すれば、この右車体基準点２０よりも車両後方にある車体後部は、障害物等に接触しないことになる。 In other words, while turning the vehicle body 2 to the left at the maximum steering angle, the vehicle body position farthest from the left turning center position Q, which is the center position of the minimum turning radius (the portion that passes through the outermost side from the turning center in the vehicle body 2) is right. It becomes the vehicle body reference point 20.
As a result, if the driver A confirms that the right vehicle body reference point 20 does not contact an obstacle or the like located on the outer side of the turning, the vehicle body rear portion behind the right vehicle body reference point 20 becomes an obstacle or the like. There will be no contact.
　一方、自動車１が最小回転半径に沿って旋廻走行を行う際、左右前輪３Ｌ,３Ｒの舵角θ２よりも左右後輪４Ｌ,４Ｒの舵角θ１が逆位相で相対的に大舵角となるように操舵される。このため、旋廻外側に位置する右後輪４Ｒの走行軌跡γよりも、旋廻外側に位置する右前輪３Ｒの走行軌跡δが旋廻方向内側（左旋廻中心位置Ｑに近い位置）になる。そのため、最小回転半径を小さくでき、いわゆる旋廻時の小回り性能を向上することができる。 On the other hand, when the automobile 1 makes a turn along the minimum turning radius, the steering angle θ1 of the left and right rear wheels 4L, 4R becomes a relatively large steering angle in an opposite phase to the steering angle θ2 of the left and right front wheels 3L, 3R. It is steered as follows. For this reason, the traveling locus δ of the right front wheel 3R located on the outer side of the turning is on the inner side in the turning direction (position close to the left turning center position Q) than the traveling locus γ of the right rear wheel 4R located on the outer side of the turning. Therefore, the minimum turning radius can be reduced, and so-called turning performance during turning can be improved.
　この結果、左右前輪３Ｌ,３Ｒ及び左右後輪４Ｌ,４Ｒを最大舵角にて左方向に旋廻し、自動車１が最小回転半径に沿って左方向に旋廻する際も、小回り性能を向上させると共に、車両後部が車両前部よりも旋廻外側に張り出すことを防止し、外輪差を気にすることなく運転することができる。 As a result, when the left and right front wheels 3L and 3R and the left and right rear wheels 4L and 4R are turned leftward at the maximum steering angle, and the vehicle 1 is turned leftward along the minimum turning radius, the turning performance is improved. Thus, it is possible to prevent the rear portion of the vehicle from projecting outward from the front portion of the vehicle and to drive without worrying about the difference between the outer wheels.
　そして、実施例１の自動車１では、旋廻中、左旋廻中心位置Ｑから最も遠い位置である右車体基準点２０を、ドライバーＡからの視認性が優れる車体右側面２ａと車体前面２ｃとの角部に設定している。そのため、ドライバーＡからの視認性の優れる位置を基準とするため、車幅間隔がつかみやすくなり、より運転しやすくすることができる。 In the automobile 1 of the first embodiment, during turning, the right vehicle body reference point 20 that is the farthest from the left turning center position Q is an angle between the vehicle body right side surface 2a and the vehicle body front surface 2c that are highly visible from the driver A. Set in the department. Therefore, since the position with excellent visibility from the driver A is used as a reference, the vehicle width interval can be easily grasped, and the driving can be facilitated.
　また、実施例１の車体２では、左右前輪３Ｌ,３Ｒの舵角θ２よりも左右後輪４Ｌ,４Ｒの舵角θ１が逆位相で相対的に大舵角とするため、左旋廻中心位置Ｑは、車両前後方向中央位置よりも車両前方に位置することとなる。このため、車室空間を犠牲にすることなく左方向の旋廻時運転性を向上することができる。 Further, in the vehicle body 2 of the first embodiment, the steering angle θ1 of the left and right rear wheels 4L, 4R is a reverse steering phase and a relatively large steering angle than the steering angle θ2 of the left and right front wheels 3L, 3R. Is positioned in front of the vehicle with respect to the center position in the longitudinal direction of the vehicle. For this reason, it is possible to improve the drivability during turning in the left direction without sacrificing the passenger compartment space.
　さらに、実施例１の車体２では、平面視における車体右側面２ａが左側最大車体基準円２１に沿ったほぼ円弧状となっている。そのため、車体右側面２ａの前後方向中央部分が車両中心軸線Ｏ側にへこむことがなくなり、車室空間を広く確保することができると共に、いわゆる卵型の美しい造形ラインを得ることができる。 Furthermore, in the vehicle body 2 of the first embodiment, the vehicle body right side surface 2a in a plan view is substantially arcuate along the left maximum vehicle body reference circle 21. Therefore, the center part in the front-rear direction of the right side surface 2a of the vehicle body does not dent toward the vehicle center axis O, so that a large cabin space can be secured and a so-called egg-shaped beautiful modeling line can be obtained.
　次に、効果を説明する。
実施例１の車両の車体構造にあっては、下記に列挙する効果を得ることができる。 Next, the effect will be described.
In the vehicle body structure of the vehicle according to the first embodiment, the following effects can be obtained.
　(1) 左右前輪３Ｌ,３Ｒの舵角θ２よりも左右後輪４Ｌ,４Ｒの舵角θ１が逆位相で相対的に大舵角となるように操舵する操舵ユニット５（舵角制御手段）と、
　右旋廻時の最小回転半径の中心位置（右旋廻中心位置Ｐ）を中心点とし、且つ、運転席シート７ａ側方又は運転席シート７ａ前方であって、車両中心軸線Ｏをはさんで前記右旋廻中心位置Ｐと反対側の車体２上の任意の位置に設定する左車体基準点１０を通る右側最大車体基準円１１の内側に収まると共に、
　左旋廻時の最小回転半径の中心位置（左旋廻中心位置Ｑ）を中心点とし、且つ、運転席シート７ａ側方又は運転席シート７ａ前方であって、車両中心軸線Ｏをはさんで前記左旋廻中心位置Ｑと反対側の車体２上の任意の位置に設定する右車体基準点２０を通る左側最大車体基準円２１の内側に収まる外側形状を有する車体２と、
　を備える構成とした。
　このため、車両旋廻時、車両後部が車両前部よりも旋廻外側に張り出すことを防止し、外輪差を気にすることなく運転することができる。 (1) Steering unit 5 (steering angle control means) for steering so that the steering angle θ1 of the left and right rear wheels 4L, 4R has a relatively large steering angle in reverse phase with respect to the steering angle θ2 of the left and right front wheels 3L, 3R. ,
Centered at the center position of the minimum turning radius when turning right (right turning center position P) and on the side of the driver's seat 7a or in front of the driver's seat 7a, with the vehicle center axis O interposed therebetween It fits inside the right maximum vehicle body reference circle 11 passing through the left vehicle body reference point 10 set at an arbitrary position on the vehicle body 2 on the side opposite to the turning center position P, and
Centering on the center position (left-turn center position Q) of the minimum turning radius when turning counterclockwise and on the side of the driver's seat 7a or in front of the driver's seat 7a, with the vehicle center axis O interposed, A vehicle body 2 having an outer shape that fits inside a left-side maximum vehicle body reference circle 21 passing through a right vehicle body reference point 20 set at an arbitrary position on the vehicle body 2 on the side opposite to the rotation center position Q;
It was set as the structure provided with.
For this reason, at the time of turning of the vehicle, it is possible to prevent the rear portion of the vehicle from projecting outward from the front portion of the vehicle and to drive without worrying about the difference between the outer wheels.
　(2) 前記車体２は、平面視における車体側面（車体右側面２ａ,車体左側面２ｂ）がほぼ円弧状に沿った形状とする構成とした。
　このため、車室空間を広く確保することができると共に、美しい造形ラインを得ることができる。 (2) The vehicle body 2 has a configuration in which the side surfaces of the vehicle body (the vehicle body right side surface 2a and the vehicle body left side surface 2b) in a plan view are substantially arcuate.
For this reason, while being able to ensure vehicle interior space widely, a beautiful modeling line can be obtained.
　実施例２は、車体の外径形状を、最大車体基準円の内側に収まると共に、最小車体基準円の外側に収まるようにした例である。 Example 2 is an example in which the outer diameter shape of the vehicle body is set inside the maximum vehicle body reference circle and within the minimum vehicle body reference circle.
　まず、構成を説明する。
　[車体外側構造の構成]
　図５は、実施例２の車体構造を適用した車両を示す平面模式図である。 First, the configuration will be described.
[Configuration of the vehicle body outer structure]
FIG. 5 is a schematic plan view showing a vehicle to which the vehicle body structure of the second embodiment is applied.
　実施例２における自動車（車両）１Ａの車体２Ａは、右側最大車体基準円１１及び左側最大車体基準円２１の内側に収まり、且つ、右側最小車体基準円１２及び左側最小車体基準円２２の外側に収まる外側形状を呈している。すなわち、車体２Ａは、車体右側面２ａと車体左側面２ｂとの間隔寸法を実施例１の場合よりも小さくすることで、右側最小車体基準円１２及び左側最小車体基準円２２の内側に張り出さない形状とした。
ここで「右側最大車体基準円」及び「左側最大車体基準円」については、実施例１と同様であるので説明を省略する。また、左右車体基準点１０,２０は、それぞれ車幅最大位置に設定する。 The vehicle body 2A of the automobile (vehicle) 1A according to the second embodiment fits inside the right maximum vehicle body reference circle 11 and the left maximum vehicle body reference circle 21 and outside the right minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22. It has an outer shape that fits. That is, the vehicle body 2A protrudes inside the right minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22 by making the distance between the vehicle body right side surface 2a and the vehicle body left side surface 2b smaller than that in the first embodiment. No shape.
Here, the “right-side maximum vehicle body reference circle” and the “left-side maximum vehicle body reference circle” are the same as those in the first embodiment, and thus the description thereof is omitted. Further, the left and right vehicle body reference points 10 and 20 are respectively set at the vehicle width maximum position.
　そして、「右側最小車体基準円」とは、最小回転半径にて右方向（時計回り方向）に旋廻する際の右旋廻中心位置Ｐを中心点とし、右車体基準点２０を通る円である。なお、ここで「右車体基準点」は、右旋廻時の第２車体基準点となり、車幅方向の車両中心軸線（車幅方向中心位置）Ｏをはさんで、右旋廻時の第１車体基準点となる左車体基準点１０と反対側の車幅最大位置に設定する点である。
なお、ここでは、この右車体基準点２０を、車体右側面２ａ上であって、左側最大車体基準円２１と右側最小車体基準円１２との交差位置に設定する。このため、右車体基準点２０は、左旋廻時の第１車体基準点になると同時に、右旋廻時の第２車体基準点となる。また、この実施例２では、左側最大車体基準円２１と右側最小車体基準円１２が一部重複するように、右車体基準点２０を車体前面２ｃ近傍に設定している。 The “right minimum vehicle body reference circle” is a circle that passes through the right vehicle body reference point 20 with the right rotation center position P when turning right (clockwise) with the minimum turning radius as the center point. Here, the “right vehicle body reference point” is the second vehicle body reference point when turning right, and the first vehicle body when turning right across the vehicle center axis (vehicle width direction center position) O in the vehicle width direction. This is a point set at the vehicle width maximum position on the opposite side to the left vehicle body reference point 10 as the reference point.
Here, the right vehicle body reference point 20 is set on the right side surface 2a of the vehicle body at the intersection of the left maximum vehicle body reference circle 21 and the right minimum vehicle body reference circle 12. For this reason, the right vehicle body reference point 20 becomes the first vehicle body reference point when turning left and at the same time the second vehicle body reference point when turning right. In the second embodiment, the right vehicle body reference point 20 is set near the vehicle body front surface 2c so that the left largest vehicle body reference circle 21 and the right smallest vehicle body reference circle 12 partially overlap.
　そして、「左側最小車体基準円」とは、最小回転半径にて左方向（反時計回り方向）に旋廻する際の左旋廻中心位置Ｑを中心点とし、左車体基準点１０を通る円である。なお、ここで「左車体基準点」は、左旋廻時の第２車体基準点となり、車幅方向の車両中心軸線（車幅方向中心位置）Ｏをはさんで、左旋廻時の第１車体基準点となる右車体基準点２０と反対側の車幅最大位置に設定する点である。
なお、ここでは、この左車体基準点１０を、車体左側面２ｂ上であって、右側最大車体基準円１１と左側最小車体基準円２２との交差位置に設定する。このため、左車体基準点１０は、右旋廻時の第１車体基準点になると同時に、左旋廻時の第２車体基準点となる。また、この実施例２では、右側最大車体基準円１１と左側最小車体基準円２２が一部重複するように、左車体基準点１０を車体前面２ｃ近傍に設定している。 The “left minimum vehicle body reference circle” is a circle that passes through the left vehicle body reference point 10 with the left rotation center position Q when turning left (counterclockwise) with the minimum turning radius as the center point. . Here, the “left vehicle body reference point” is the second vehicle body reference point when turning counterclockwise, and the first vehicle body when turning counterclockwise across the vehicle center axis (vehicle width direction center position) O in the vehicle width direction. This is a point set at the vehicle width maximum position on the opposite side of the right vehicle body reference point 20 as the reference point.
Here, the left vehicle body reference point 10 is set on the left side surface 2b of the vehicle body at the intersection of the right maximum vehicle body reference circle 11 and the left minimum vehicle body reference circle 22. For this reason, the left vehicle body reference point 10 becomes the first vehicle body reference point when turning right and at the same time the second vehicle body reference point when turning left. Further, in the second embodiment, the left vehicle body reference point 10 is set near the vehicle body front surface 2c so that the right maximum vehicle body reference circle 11 and the left minimum vehicle body reference circle 22 partially overlap.
　次に、作用を説明する。
実施例２の車両の車体構造における作用を、「右旋廻時走行作用」、「左旋廻時走行作用」に分けて説明する。 Next, the operation will be described.
The operation of the vehicle body structure of the vehicle according to the second embodiment will be described by dividing it into “running operation when turning right” and “running operation when turning left”.
　［右旋廻時走行作用］
　図６は、実施例２の車両における右旋廻時を示す平面模式図である。 [Running action when turning right]
FIG. 6 is a schematic plan view showing the right turn of the vehicle according to the second embodiment.
　自動車１Ａを最小回転半径にて右方向（時計回り方向）に旋廻させるには、ステアリングハンドル５１を右方向に最大に回動する。これにより、左右前輪３Ｌ,３Ｒは旋廻方向である右方向に最大舵角になる。また、左右後輪４Ｌ,４Ｒは旋廻方向と逆方向である左方向に最大舵角となる。さらにこのとき、左右前輪３Ｌ,３Ｒの舵角θ２よりも左右後輪４Ｌ,４Ｒの舵角θ１の方が相対的に大舵角となる。 In order to turn the automobile 1A to the right (clockwise direction) with the minimum turning radius, the steering handle 51 is rotated to the maximum in the right direction. Thereby, the left and right front wheels 3L and 3R have the maximum steering angle in the right direction which is the turning direction. Further, the left and right rear wheels 4L, 4R have a maximum steering angle in the left direction which is opposite to the turning direction. Further, at this time, the steering angle θ1 of the left and right rear wheels 4L, 4R is relatively larger than the steering angle θ2 of the left and right front wheels 3L, 3R.
　これにより、図６に示すように、自動車１Ａは最小回転半径に沿って右方向に旋廻走行を行う。ここで、車体２Ａの旋廻内側に臨む車体右側面２ａは、右側最小車体基準円１２の外側に収まる形状となっている。そのため、車体２Ａの旋廻内側に臨む車体右側面２ａは、旋廻中、この右側最小車体基準円１２の内側、つまり旋廻内側にはみ出ることはない。 Thereby, as shown in FIG. 6, the automobile 1A turns in the right direction along the minimum turning radius. Here, the right side surface 2a of the vehicle body facing the inside of the turning of the vehicle body 2A has a shape that fits outside the minimum right vehicle body reference circle 12. Therefore, the right side surface 2a of the vehicle body that faces the inside of the turning of the vehicle body 2A does not protrude inside the right minimum vehicle body reference circle 12, that is, inside the turning during turning.
　すなわち、最大舵角にて車体２Ａを右方向に旋廻する間、最小回転半径の中心位置である右旋廻中心位置Ｐから最も近い車体位置（車体２Ａにおいて旋廻中心から最も内側を通る部分）が右車体基準点２０となる。
これにより、ドライバーＡはこの右車体基準点２０が旋廻内側に位置する障害物等に接触しないことを確認すれば、この右車体基準点２０よりも車両後方にある車体後部は、障害物等に接触しないことになる。 That is, while turning the vehicle body 2A to the right at the maximum steering angle, the vehicle body position closest to the right rotation center position P, which is the center position of the minimum turning radius (the portion that passes the innermost from the rotation center in the vehicle body 2A) is It becomes the vehicle body reference point 20.
As a result, if the driver A confirms that the right vehicle body reference point 20 does not contact an obstacle or the like located on the inside of the turning, the vehicle body rear portion behind the right vehicle body reference point 20 becomes an obstacle or the like. There will be no contact.
　一方、自動車１Ａが最小回転半径に沿って旋廻走行を行う際、左右前輪３Ｌ,３Ｒの舵角θ２よりも左右後輪４Ｌ,４Ｒの舵角θ１が逆位相で相対的に大舵角となるように操舵される。このため、旋廻内側に位置する右後輪４Ｒの走行軌跡γよりも、旋廻内側に位置する右前輪３Ｒの走行軌跡δが旋廻方向内側（右旋廻中心位置Ｐに近い位置）になる。そのため、最小回転半径を小さくでき、いわゆる旋廻時の小回り性能を向上することができる。 On the other hand, when the automobile 1A turns around the minimum turning radius, the steering angle θ1 of the left and right rear wheels 4L, 4R becomes a relatively large steering angle with an opposite phase to the steering angle θ2 of the left and right front wheels 3L, 3R. It is steered as follows. For this reason, the traveling locus δ of the right front wheel 3R located inside the turning is on the inside in the turning direction (position close to the right turning center position P) than the traveling locus γ of the right rear wheel 4R located inside the turning. Therefore, the minimum turning radius can be reduced, and so-called turning performance during turning can be improved.
　この結果、左右前輪３Ｌ,３Ｒ及び左右後輪４Ｌ,４Ｒを最大舵角にて右方向に旋廻し、自動車１Ａが最小回転半径に沿って右方向に旋廻する際、小回り性能を向上させると共に、車両後部が車両前部よりも旋廻内側に張り出すことを防止し、内輪差を気にすることなく運転することができる。 As a result, when the left and right front wheels 3L and 3R and the left and right rear wheels 4L and 4R are turned to the right at the maximum steering angle and the automobile 1A is turned to the right along the minimum turning radius, the turning performance is improved. It is possible to prevent the rear portion of the vehicle from projecting to the inside of the turn from the front portion of the vehicle and to drive without worrying about the difference between the inner wheels.
　なお、実施例２の車体２Ａは、右方向に旋廻時、旋廻外側に臨む車体左側面２ｂが、右側最大車体基準円１１の内側に収まる形状となっている。このため、自動車１Ａが最小回転半径に沿って右方向に旋廻する際、車両後部が車両前部よりも旋廻外側に張り出すことを防止し、外輪差を気にすることなく運転することができる。 In addition, the vehicle body 2A of the second embodiment has a shape in which the vehicle body left side surface 2b facing the outside of the rotation fits inside the maximum vehicle body reference circle 11 on the right side when turning rightward. Therefore, when the automobile 1A turns rightward along the minimum turning radius, it is possible to prevent the rear portion of the vehicle from projecting outward from the front portion of the vehicle and to drive without worrying about the difference between the outer wheels. .
　［左旋廻時走行作用］
　図７は、実施例２の車両における左旋廻時を示す平面模式図である。 [Running action when turning counterclockwise]
FIG. 7 is a schematic plan view illustrating the left-turning in the vehicle of the second embodiment.
　自動車１Ａを最小回転半径にて左方向（反時計回り方向）に旋廻させるには、ステアリングハンドル５１を左方向に最大に回動する。これにより、左右前輪３Ｌ,３Ｒは旋廻方向である左方向に最大舵角になる。また、左右後輪４Ｌ,４Ｒは旋廻方向と逆方向である右方向に最大舵角になる、さらにこのとき、左右前輪３Ｌ,３Ｒの舵角θ２よりも左右後輪４Ｌ,４Ｒの舵角θ１の方が相対的に大舵角となる。 In order to turn the automobile 1A to the left (counterclockwise) with the minimum turning radius, the steering handle 51 is rotated to the left in the maximum. As a result, the left and right front wheels 3L, 3R have the maximum steering angle in the left direction, which is the turning direction. Further, the left and right rear wheels 4L and 4R have a maximum steering angle in the right direction opposite to the turning direction. Further, at this time, the steering angle θ1 of the left and right rear wheels 4L and 4R is larger than the steering angle θ2 of the left and right front wheels 3L and 3R. Is a relatively large steering angle.
　これにより、図７に示すように、自動車１Ａは最小回転半径に沿って左方向に旋廻走行を行う。ここで、車体２Ａの旋廻内側に臨む車体左側面２ｂは、左側最小車体基準円２２の外側に収まる形状となっている。そのため、車体２Ａの旋廻内側に臨む車体左側面２ｂは、旋廻中、この左側最小車体基準円２２の内側、つまり旋廻内側にはみ出ることはない。 Thereby, as shown in FIG. 7, the automobile 1A turns in the left direction along the minimum turning radius. Here, the left side surface 2 b of the vehicle body facing the inside of the turning of the vehicle body 2 </ b> A has a shape that fits outside the minimum left vehicle body reference circle 22. Therefore, the left side surface 2b of the vehicle body facing the inside of the turning of the vehicle body 2A does not protrude inside the left minimum vehicle body reference circle 22, that is, inside of the turning during turning.
　すなわち、最大舵角にて車体２Ａを左方向に旋廻する間、最小回転半径の中心位置である左旋廻中心位置Ｑから最も近い車体位置（車体２Ａにおいて旋廻中心から最も内側を通る部分）が左車体基準点１０となる。
これにより、ドライバーＡはこの左車体基準点１０が旋廻内側に位置する障害物等に接触しないことを確認すれば、この左車体基準点１０よりも車両後方にある車体後部は、障害物等に接触しないことになる。 That is, while turning the vehicle body 2A to the left at the maximum steering angle, the vehicle body position closest to the left turning center position Q, which is the center position of the minimum turning radius (the portion that passes the innermost from the turning center in the vehicle body 2A) is left. It becomes the vehicle body reference point 10.
As a result, if the driver A confirms that the left vehicle body reference point 10 does not contact an obstacle or the like located inside the turning, the vehicle body rear portion behind the left vehicle body reference point 10 becomes an obstacle or the like. There will be no contact.
　一方、自動車１Ａが最小回転半径に沿って旋廻走行を行う際、左右前輪３Ｌ,３Ｒの舵角θ２よりも左右後輪４Ｌ,４Ｒの舵角θ１が逆位相で相対的に大舵角となるように操舵される。このため、旋廻内側に位置する左後輪４Ｌの走行軌跡αよりも、旋廻内側に位置する左前輪３Ｌの走行軌跡βが旋廻方向内側（左旋廻中心位置Ｑに近い位置）になる。そのため、最小回転半径を小さくでき、いわゆる旋廻時の小回り性能を向上することができる。 On the other hand, when the automobile 1A turns around the minimum turning radius, the steering angle θ1 of the left and right rear wheels 4L, 4R becomes a relatively large steering angle with an opposite phase to the steering angle θ2 of the left and right front wheels 3L, 3R. It is steered as follows. For this reason, the traveling locus β of the left front wheel 3L located on the inner side of the turning is on the inner side in the turning direction (position close to the left turning center position Q) than the traveling locus α of the left rear wheel 4L located on the inner side of the turning. Therefore, the minimum turning radius can be reduced, and so-called turning performance during turning can be improved.
　この結果、左右前輪３Ｌ,３Ｒ及び左右後輪４Ｌ,４Ｒを最大舵角にて左方向に旋廻し、自動車１Ａが最小回転半径に沿って右方向に旋廻する際、小回り性能を向上させると共に、車両後部が車両前部よりも旋廻内側に張り出すことを防止し、内輪差を気にすることなく運転することができる。 As a result, the left and right front wheels 3L, 3R and the left and right rear wheels 4L, 4R are turned to the left at the maximum steering angle, and when the automobile 1A is turned to the right along the minimum turning radius, the turning performance is improved. It is possible to prevent the rear portion of the vehicle from projecting to the inside of the turn from the front portion of the vehicle and to drive without worrying about the difference between the inner wheels.
　なお、実施例２の車体２Ａは、左方向に旋廻時、旋廻外側に臨む車体右側面２ａが、左側最大車体基準円２１の内側に収まる形状となっている。このため、自動車１Ａが最小回転半径に沿って左方向に旋廻する際、車両後部が車両前部よりも旋廻外側に張り出すことを防止し、外輪差を気にすることなく運転することができる。 The vehicle body 2A of the second embodiment has a shape in which the right side surface 2a of the vehicle body facing the outside of the rotation fits inside the left maximum vehicle body reference circle 21 when turning leftward. For this reason, when the automobile 1A turns leftward along the minimum turning radius, it is possible to prevent the rear portion of the vehicle from projecting outward from the front portion of the vehicle and to drive without worrying about the difference between the outer wheels. .
　次に、効果を説明する。
実施例２の車両の車体構造にあっては、下記に列挙する効果を得ることができる。 Next, the effect will be described.
In the vehicle body structure of the vehicle according to the second embodiment, the effects listed below can be obtained.
　(3) 前記左車体基準点１０及び前記右車体基準点２０は、車幅最大位置に設定し、
　前記車体２Ａは、右旋廻時の最小回転半径の中心位置（右旋廻中心位置Ｐ）を中心点とし、且つ、車両中心軸線Ｏをはさんで左車体基準点１０（右旋廻時の第１車体基準点）と反対側の車幅最大位置に設定する右車体基準点２０（右旋廻時の第２車体基準点）を通る右側最小車体基準円１２の外側に収まると共に、
　左旋廻時の最小回転半径の中心位置（左旋廻中心位置Ｑ）を中心点とし、且つ、車両中心軸線Ｏをはさんで右車体基準点２０（左旋廻時の第１車体基準点）と反対側の車幅最大位置に設定する左車体基準点１０（左旋廻時の第２車体基準点）を通る左側最小車体基準円２２の外側に収まる外側形状を有する構成とした。
　このため、車両旋廻時、車両後部が車両前部よりも旋廻内側に張り出すことを防止し、内輪差を気にすることなく運転することができる。 (3) The left vehicle body reference point 10 and the right vehicle body reference point 20 are set at the vehicle width maximum position,
The vehicle body 2A is centered on the center position of the minimum turning radius when turning right (right turning center position P), and the left vehicle body reference point 10 (first vehicle body when turning right) across the vehicle center axis O. The right vehicle body reference point 20 (the second vehicle body reference point when turning right) set to the vehicle width maximum position on the opposite side to the reference point) is located outside the right minimum vehicle body reference circle 12 and
Centered at the center position of the minimum turning radius when turning left (left turning center position Q) and opposite the right vehicle body reference point 20 (first vehicle body reference point when turning left) across the vehicle center axis O The vehicle body has an outer shape that fits outside the minimum left vehicle body reference circle 22 that passes through the left vehicle body reference point 10 (the second vehicle body reference point when turning counterclockwise) set at the maximum vehicle width side position.
For this reason, at the time of turning of the vehicle, it is possible to prevent the rear portion of the vehicle from projecting to the inside of the turning from the front portion of the vehicle, and it is possible to drive without worrying about the difference between the inner rings.
　実施例３は、左右車体基準点を、車体の左右に位置するフェンダーミラーの設置位置に設定した例である。
　図８は、実施例３の車体構造を適用した車両を示す平面模式図である。 The third embodiment is an example in which the left and right vehicle body reference points are set to the installation positions of the fender mirrors located on the left and right sides of the vehicle body.
FIG. 8 is a schematic plan view showing a vehicle to which the vehicle body structure of the third embodiment is applied.
　実施例３における自動車１Ｂの車体２Ｂは、右側最大車体基準円１１及び左側最大車体基準円２１の内側に収まり、且つ、右側最小車体基準円１２及び左側最小車体基準円２２の外側に収まる外側形状を呈している。 The vehicle body 2B of the automobile 1B according to the third embodiment is located outside the right maximum vehicle body reference circle 11 and the left maximum vehicle body reference circle 21 and outside the right shape minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22. Presents.
　このとき、右側最大車体基準円１１、左側最大車体基準円２１、右側最小車体基準円１２、左側最小車体基準円２２を設定する際に基準となる左右車体基準点１０,２０は、車体２Ｂの左右側部に設けたフェンダーミラーＦの設定位置に設定する。 At this time, the left and right vehicle body reference points 10 and 20 used as a reference when setting the right largest vehicle body reference circle 11, the left largest vehicle body reference circle 21, the right smallest vehicle body reference circle 12, and the left smallest vehicle body reference circle 22 are Set to the setting position of the fender mirror F provided on the left-right side.
　通常、フェンダーミラーＦはドライバーＡの視認性の高い位置に設定されるため、このフェンダーミラーＦの設定位置に左右車体基準点１０,２０を設定することで、さらに旋廻時の運転性を向上することができる。 Usually, since the fender mirror F is set at a position where the visibility of the driver A is high, by setting the left and right vehicle body reference points 10 and 20 at the setting position of the fender mirror F, the drivability at the time of turning is further improved. be able to.
　さらに、フェンダーミラーＦは、車体右側面２ａや車体左側面２ｂから車体側方に突出している。そのため、右旋廻時の最小回転半径の中心位置（右旋廻中心位置Ｐ）を中心点とする円を設定する際、左車体基準点１０を通る右側最大車体基準円１１は比較的大きくなり、右側最小車体基準円１２は比較的小さくなる。一方、左旋廻時の最小回転半径の中心位置（左旋廻中心位置Ｑ）を中心点とする円を設定する際には、右車体基準点２０を通る左側最大車体基準円２１は比較的大きくなり、左側最小車体基準円２２は比較的小さくなる。これにより、車体幅寸法が大きくなって車室空間を広く確保したり、車体形状の設計自由度を向上することができる。 Furthermore, the fender mirror F protrudes from the vehicle body right side surface 2a and the vehicle body left side surface 2b to the vehicle body side. Therefore, when setting a circle centered on the center position of the minimum turning radius when turning right (right turning center position P), the right maximum vehicle body reference circle 11 passing through the left vehicle body reference point 10 becomes relatively large, The minimum vehicle body reference circle 12 is relatively small. On the other hand, when setting a circle centered on the center position of the minimum turning radius when turning counterclockwise (left turning center position Q), the left maximum vehicle body reference circle 21 passing through the right vehicle body reference point 20 is relatively large. The left minimum vehicle body reference circle 22 is relatively small. Thereby, a vehicle body width dimension becomes large and a vehicle interior space can be ensured widely, or the design freedom of a vehicle body shape can be improved.
　すなわち、実施例３の車両の車体構造にあっては、下記に列挙する効果を得ることができる。 That is, the effects listed below can be obtained in the vehicle body structure of the vehicle of the third embodiment.
　(4) 前記第１車体基準点及び前記第２車体基準点となる左右車体基準点１０,２０は、車体２Ｂの左右に位置するフェンダーミラーＦの設置位置に設定する構成とした。
　このため、旋廻時の運転性を向上すると共に、車体幅寸法を大きく確保して車室空間を広くしたり、車体形状の設計自由度を向上することができる。 (4) The left and right vehicle body reference points 10 and 20 serving as the first vehicle body reference point and the second vehicle body reference point are set to the installation positions of the fender mirrors F positioned on the left and right of the vehicle body 2B.
For this reason, it is possible to improve the drivability during turning, secure a large vehicle body width dimension to widen the vehicle compartment space, and improve the degree of freedom in designing the vehicle body shape.
　実施例４は、右側最大車体基準円と左側最小車体基準円が重複しない位置に右車体基準点を設定し、左側最大車体基準円と右側最小車体基準円が重複しない位置に左車体基準点を設定した例である。
　図９は、実施例４の車体構造を適用した車両を示す平面模式図である。 In the fourth embodiment, the right vehicle body reference point is set at a position where the right maximum vehicle body reference circle and the left minimum vehicle body reference circle do not overlap, and the left vehicle body reference point is set at a position where the left maximum vehicle body reference circle and the right minimum vehicle body reference circle do not overlap. This is an example of setting.
FIG. 9 is a schematic plan view showing a vehicle to which the vehicle body structure of the fourth embodiment is applied.
　実施例４における自動車１Ｃの車体２Ｃは、右側最大車体基準円１１及び左側最大車体基準円２１の内側に収まり、且つ、右側最小車体基準円１２及び左側最小車体基準円２２の外側に収まる外側形状を呈している。 The vehicle body 2C of the automobile 1C according to the fourth embodiment is located outside the right maximum vehicle body reference circle 11 and the left maximum vehicle body reference circle 21 and outside the right minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22. Presents.
　このとき、右側最大車体基準円１１、左側最大車体基準円２１、右側最小車体基準円１２、左側最小車体基準円２２を設定する際に基準となる左右車体基準点１０,２０は、左右前輪３Ｌ,３Ｒを支持する前輪軸９Ａと左右後輪４Ｌ,４Ｒを支持する後輪軸９Ｂとの間に設定する。
すなわち、左車体基準点１０は、右側最大車体基準円１１と左側最小車体基準円２２との交差位置に設定されるが、このとき、右側最大車体基準円１１と左側最小車体基準円２２が重複しないように左車体基準点１０を前輪軸９Ａよりも車両後側に設定する。
また、右車体基準点２０は、左側最大車体基準円２１と右側最小車体基準円１２との交差位置に設定されるが、このとき、左側最大車体基準円２１と右側最小車体基準円１２が重複しないように右車体基準点２０を前輪軸９Ａよりも車両後側に設定する。 At this time, the left and right vehicle body reference points 10 and 20 used as a reference when setting the right largest vehicle body reference circle 11, the left largest vehicle body reference circle 21, the right smallest vehicle body reference circle 12, and the left smallest vehicle body reference circle 22 are the left and right front wheels 3L. , 3R is set between the front wheel shaft 9A and the rear wheel shaft 9B supporting the left and right rear wheels 4L, 4R.
That is, the left vehicle body reference point 10 is set at the intersection position of the right maximum vehicle body reference circle 11 and the left minimum vehicle body reference circle 22. At this time, the right maximum vehicle body reference circle 11 and the left minimum vehicle body reference circle 22 overlap. In order to avoid this, the left vehicle body reference point 10 is set on the vehicle rear side with respect to the front wheel shaft 9A.
The right vehicle body reference point 20 is set at the intersection of the left maximum vehicle body reference circle 21 and the right minimum vehicle body reference circle 12. At this time, the left maximum vehicle body reference circle 21 and the right minimum vehicle body reference circle 12 overlap. In order to avoid this, the right vehicle body reference point 20 is set on the vehicle rear side with respect to the front wheel shaft 9A.
　ここで、車体２Ｃを、右側最大車体基準円１１及び左側最大車体基準円２１の内側に収まり、且つ、右側最小車体基準円１２及び左側最小車体基準円２２の外側に収まる外側形状とする場合、左右車体基準点１０,２０を車体２Ｃの前側に設定するほど、右側最小車体基準円１２及び左側最小車体基準円２２の半径が大きくなる。このため、右側最大車体基準円１１と左側最小車体基準円２２との重複面積、及び、左側最大車体基準円２１と右側最小車体基準円１２との重複面積が拡大する。これにより、車体２Ｃの前後方向の中心部分において、確保できる車幅寸法が減少する。 Here, when the vehicle body 2C has an outer shape that fits inside the right maximum vehicle body reference circle 11 and the left maximum vehicle body reference circle 21 and that falls outside the right minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22, As the left and right vehicle body reference points 10 and 20 are set in front of the vehicle body 2C, the radii of the right minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22 are increased. For this reason, the overlapping area of the right maximum vehicle body reference circle 11 and the left minimum vehicle body reference circle 22 and the overlapping area of the left maximum vehicle body reference circle 21 and the right minimum vehicle body reference circle 12 are increased. Thereby, the vehicle width dimension which can be ensured reduces in the center part of the front-back direction of the vehicle body 2C.
　さらに、左右前輪３Ｌ,３Ｒが存在するための空間（ホイールスペース）を確保しようとすると、前輪軸９Ａよりも前側に左右車体基準点１０,２０を設定したとき、左右前輪３Ｌ,３Ｒの間隔よりも左車体基準点１０と右車体基準点２０の間隔を広く取る必要がある。その上、ドライバーＡから左右車体基準点１０,２０までの距離が大きくなり、視認性の低下が懸念される。 Further, when trying to secure a space (wheel space) for the presence of the left and right front wheels 3L and 3R, when the left and right vehicle body reference points 10 and 20 are set in front of the front wheel shaft 9A, the distance between the left and right front wheels 3L and 3R is determined. Also, it is necessary to increase the distance between the left vehicle body reference point 10 and the right vehicle body reference point 20. In addition, the distance from the driver A to the left and right vehicle body reference points 10 and 20 is increased, and there is a concern that the visibility may be lowered.
　そこで、実施例４の自動車１Ｃのように、左右車体基準点１０,２０を、左右前輪３Ｌ,３Ｒを支持する前輪軸９Ａと左右後輪４Ｌ,４Ｒを支持する後輪軸９Ｂとの間に設定することで、右側最小車体基準円１２及び左側最小車体基準円２２の半径を小さくすることができる。このため、右側最大車体基準円１１と左側最小車体基準円２２との重複面積、及び、左側最大車体基準円２１と右側最小車体基準円１２との重複面積が縮小でき、これにより、広い車室空間を確保することができて、居住性が向上する。 Therefore, like the automobile 1C of the fourth embodiment, the left and right vehicle body reference points 10, 20 are set between the front wheel shaft 9A that supports the left and right front wheels 3L, 3R and the rear wheel shaft 9B that supports the left and right rear wheels 4L, 4R. By doing so, the radii of the right minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22 can be reduced. For this reason, the overlapping area of the right maximum vehicle body reference circle 11 and the left minimum vehicle body reference circle 22 and the overlapping area of the left maximum vehicle body reference circle 21 and the right minimum vehicle body reference circle 12 can be reduced. Space can be secured and comfort is improved.
　また、左右車体基準点１０,２０がドライバーＡに近い位置に設定されるため、これら左右車体基準点１０,２０の視認性を高めることができ、旋廻時の運転性をさらに向上することができる。 Further, since the left and right vehicle body reference points 10 and 20 are set at positions close to the driver A, the visibility of the left and right vehicle body reference points 10 and 20 can be improved, and the drivability during turning can be further improved. .
　すなわち、実施例４の車両の車体構造にあっては、下記に列挙する効果を得ることができる。 That is, the effects listed below can be obtained in the vehicle body structure of the vehicle of the fourth embodiment.
　(5) 前記第１車体基準点及び前記第２車体基準点となる左右車体基準点１０,２０は、左右前輪３Ｌ,３Ｒを支持する前輪軸９Ａと左右後輪４Ｌ,４Ｒを支持する後輪軸９Ｂとの間に設定する構成とした。
　このため、広い車室空間を確保することができて、居住性が向上する。また、左右車体基準点１０,２０の視認性を高めることができ、旋廻時の運転性をさらに向上することができる。 (5) The left and right vehicle body reference points 10 and 20 serving as the first vehicle body reference point and the second vehicle body reference point are a front wheel shaft 9A that supports the left and right front wheels 3L and 3R and a rear wheel shaft that supports the left and right rear wheels 4L and 4R. It was set as the structure set between 9B.
For this reason, a large vehicle interior space can be secured and the comfortability is improved. Further, the visibility of the left and right vehicle body reference points 10 and 20 can be enhanced, and the drivability during turning can be further improved.
　実施例５は、左右車体基準点を、車体の左右に位置するドアミラーの設置位置に設定した例である。
　図１０は、実施例５の車体構造を適用した車両を示す平面模式図である。 The fifth embodiment is an example in which the left and right vehicle body reference points are set to the installation positions of the door mirrors located on the left and right sides of the vehicle body.
FIG. 10 is a schematic plan view showing a vehicle to which the vehicle body structure of the fifth embodiment is applied.
　実施例５における自動車１Ｄの車体２Ｄは、右側最大車体基準円１１及び左側最大車体基準円２１の内側に収まり、且つ、右側最小車体基準円１２及び左側最小車体基準円２２の外側に収まる外側形状を呈している。 The vehicle body 2D of the automobile 1D according to the fifth embodiment is located outside the right maximum vehicle body reference circle 11 and the left maximum vehicle body reference circle 21 and outside the right minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22. Presents.
　このとき、右側最大車体基準円１１、左側最大車体基準円２１、右側最小車体基準円１２、左側最小車体基準円２２を設定する際に基準となる左右車体基準点１０,２０は、車体２Ｄの左右側部に設けたドアミラーＤの設定位置に設定する。 At this time, the left and right vehicle body reference points 10 and 20 used as a reference when setting the right maximum vehicle body reference circle 11, the left maximum vehicle body reference circle 21, the right minimum vehicle body reference circle 12, and the left minimum vehicle body reference circle 22 are Set to the setting position of the door mirror D provided on the left-right side.
　通常、ドアミラーＤはドライバーＡの側方で、視認性の高い位置に設定される。また、ドアミラーＤは、前輪軸９Ａと後輪軸９Ｂとの間に設けられる。このため、このドアミラーＤの設定位置に左右車体基準点１０,２０を設定することで、旋廻時の運転性をさらに向上することができると共に、広い車室空間を確保することができて、居住性が向上する。 Normally, the door mirror D is set on the side of the driver A at a highly visible position. The door mirror D is provided between the front wheel shaft 9A and the rear wheel shaft 9B. For this reason, by setting the left and right vehicle body reference points 10 and 20 at the setting position of the door mirror D, it is possible to further improve the drivability during turning and to secure a wide cabin space and Improves.
　つまり、左右車体基準点１０,２０をドアミラーＤの設定位置に設定することで、フェンダーミラーにこれらを設定する場合よりも、ドライバーＡからの距離がより短くなって、目視しやすくなる。このため、更なる運転性の向上を図ることができる。また、ドライバーＡに近い位置に左右車体基準点１０,２０を設定することで、フェンダーミラーにこれらを設定する場合よりも、設定位置が車両後方側にずれる。このため、右側最小車体基準円１２及び左側最小車体基準円２２の半径を小さくすることができ、右側最大車体基準円１１と左側最小車体基準円２２との重複面積、及び、左側最大車体基準円２１と右側最小車体基準円１２との重複面積が縮小する。この結果、広い車室空間を確保することができて、居住性の向上を図ることができる。 That is, by setting the left and right vehicle body reference points 10 and 20 to the setting positions of the door mirror D, the distance from the driver A becomes shorter and easier to see than when these are set on the fender mirror. For this reason, the further improvement of drivability can be aimed at. Further, by setting the left and right vehicle body reference points 10 and 20 at a position close to the driver A, the setting position is shifted to the rear side of the vehicle as compared with the case where these are set on the fender mirror. For this reason, the radius of the right minimum vehicle body reference circle 12 and the left minimum vehicle body reference circle 22 can be reduced, the overlapping area of the right maximum vehicle body reference circle 11 and the left minimum vehicle body reference circle 22, and the left maximum vehicle body reference circle The overlapping area between 21 and the right minimum vehicle body reference circle 12 is reduced. As a result, a large vehicle compartment space can be secured and the comfortability can be improved.
　以上、本発明の車両の車体構造を実施例１～実施例５に基づき説明してきたが、具体的な構成については、これらの実施例に限られるものではなく、特許請求の範囲の各請求項に係る発明の要旨を逸脱しない限り、設計の変更や追加等は許容される。 Although the vehicle body structure of the vehicle according to the present invention has been described based on the first to fifth embodiments, the specific configuration is not limited to these embodiments, and each claim of the claims Design changes and additions are permitted without departing from the spirit of the invention.
　上記各実施例では、操舵システムとして、電子制御するいわゆるステイバイワイヤ方式となっているが、これに限らない。ステアリングハンドルと前後輪を、リンク等を介して接続し、機械的に制御するもの（リンケージタイプ）であってもよい。また、後輪の操舵は油圧を用いるものに限らない。 In each of the above embodiments, the steering system is a so-called stay-by-wire system in which electronic control is performed, but the present invention is not limited to this. A steering handle and front and rear wheels may be connected via a link or the like and mechanically controlled (linkage type). Further, the steering of the rear wheels is not limited to using hydraulic pressure.
　上記各実施例では、車両として、走行用モータを走行駆動源とする電気自動車としたが、これに限らない。エンジンを駆動源とするエンジン車や、エンジンとモータを駆動源とするハイブリッド車両等であってもよい。 In each of the above embodiments, the vehicle is an electric vehicle that uses a traveling motor as a traveling drive source, but is not limited thereto. It may be an engine vehicle using an engine as a drive source, a hybrid vehicle using an engine and a motor as drive sources, or the like.
関連出願の相互参照Cross-reference of related applications
　本出願は、２０１１年１０月１８日に日本国特許庁に出願された特願２０１１－２２８８３３に基づいて優先権を主張し、その全ての開示は完全に本明細書で参照により組み込まれる。 This application claims priority based on Japanese Patent Application No. 2011-228833 filed with the Japan Patent Office on October 18, 2011, the entire disclosure of which is fully incorporated herein by reference.

Claims (5)

  1. 　前輪の舵角よりも後輪の舵角が逆位相で相対的に大舵角となるように操舵する舵角制御手段と、
    　最小回転半径の中心位置を中心点とし、且つ、運転席側方又は運転席前方であって、車幅方向中心位置をはさんで前記中心点と反対側の車体上の任意の位置に設定する第１車体基準点を通る最大車体基準円の内側に収まる外側形状を有する車体と、
    　を備えることを特徴とする車両の車体構造。     Rudder angle control means for steering so that the rudder angle of the rear wheels is a relatively large rudder angle in reverse phase with respect to the rudder angle of the front wheels;
    The center position of the minimum turning radius is set as the center point, and is set to an arbitrary position on the vehicle body on the side of the driver seat or in front of the driver seat and on the opposite side of the center point across the center position in the vehicle width direction. A vehicle body having an outer shape that fits inside a maximum vehicle body reference circle passing through the first vehicle body reference point;
    A vehicle body structure characterized by comprising:
  2. 　請求項１に記載された車両の車体構造において、
    　前記第１車体基準点は、車幅最大位置に設定し、
    　前記車体は、最小回転半径の中心位置を中心点とすると共に、車幅方向中心位置をはさんで前記第１車体基準点と反対側の車幅最大位置に設定する第２車体基準点を通る最小車体基準円の外側に収まる外側形状を有する
    　ことを特徴とする車両の車体構造。     In the vehicle body structure according to claim 1,
    The first vehicle body reference point is set at the vehicle width maximum position,
    The vehicle body passes through a second vehicle body reference point which is set at the vehicle width maximum position opposite to the first vehicle body reference point with the center position of the minimum turning radius as the center point and across the vehicle width direction center position. A vehicle body structure characterized by having an outer shape that fits outside a minimum vehicle body reference circle.
  3. 　請求項２に記載された車両の車体構造において、
    　前記第１車体基準点又は前記第２車体基準点は、前記前輪を支持する前輪軸と前記後輪を支持する後輪軸との間に設定する
    　ことを特徴とする車両の車体構造。     In the vehicle body structure according to claim 2,
    The vehicle body structure for a vehicle, wherein the first vehicle body reference point or the second vehicle body reference point is set between a front wheel shaft that supports the front wheel and a rear wheel shaft that supports the rear wheel.
  4. 　請求項２又は請求項３に記載された車両の車体構造において、
    　前記第１車体基準点及び前記第２車体基準点は、車体の左右に位置するドアミラー又はフェンダーミラーの設置位置に設定する
    　ことを特徴とする車両の車体構造。     In the vehicle body structure according to claim 2 or claim 3,
    The vehicle body structure of a vehicle, wherein the first vehicle body reference point and the second vehicle body reference point are set at installation positions of door mirrors or fender mirrors located on the left and right sides of the vehicle body.
  5. 　請求項１から請求項４のいずれか一項に記載された車両の車体構造において、
    　前記車体は、平面視における車体側面がほぼ円弧状に沿った形状とする
    　ことを特徴とする車両の車体構造。     In the vehicle body structure according to any one of claims 1 to 4,
    The vehicle body structure according to claim 1, wherein a side surface of the vehicle body in a plan view has a substantially arcuate shape.
PCT/JP2012/073597 2011-10-18 2012-09-14 Vehicle body structure of vehicle WO2013058043A1 (en)

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JP2011228833A JP2013086653A (en) 2011-10-18 2011-10-18 Vehicle body structure of automobile

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110667704A (en) * 2018-07-03 2020-01-10 深圳富泰宏精密工业有限公司 Power vehicle steering warning method, power vehicle steering warning system and vehicle electronic device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001294177A (en) * 2001-02-23 2001-10-23 Suzuki Motor Corp Vehicle body structure of electrically powered four- wheel vehicle
JP2005186754A (en) * 2003-12-25 2005-07-14 Iseki & Co Ltd Four-wheel steering device for working vehicle
WO2011052076A1 (en) * 2009-10-30 2011-05-05 トヨタ自動車株式会社 Vehicle movement control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001294177A (en) * 2001-02-23 2001-10-23 Suzuki Motor Corp Vehicle body structure of electrically powered four- wheel vehicle
JP2005186754A (en) * 2003-12-25 2005-07-14 Iseki & Co Ltd Four-wheel steering device for working vehicle
WO2011052076A1 (en) * 2009-10-30 2011-05-05 トヨタ自動車株式会社 Vehicle movement control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110667704A (en) * 2018-07-03 2020-01-10 深圳富泰宏精密工业有限公司 Power vehicle steering warning method, power vehicle steering warning system and vehicle electronic device

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