JP6439624B2 - vehicle - Google Patents

Description

  The present invention relates to a vehicle.

  Patent Document 1 listed below discloses an invention related to a tiltable vehicle stabilizer. In this tiltable vehicle stabilizer, a cabin on which an occupant is boarded is connected to the vehicle body via a parallel link mechanism and a rotation increasing system, and the cabin is attached to the vehicle body by operating the parallel link mechanism and the rotation increasing system, respectively. It is possible to tilt it. For this reason, during traveling of the vehicle, the cabin can be tilted with respect to the road surface in accordance with the weight shift of the occupant.

Japanese Patent Laid-Open No. 2-182528

  However, in the case of the prior art described in Patent Document 1, the tilting axis of the cabin when the parallel link mechanism operates is set on the lower side of the cabin, more specifically in the vicinity of the road surface. For this reason, when the cabin is tilted, the instantaneous center of rotation of the cabin, that is, the instantaneous center of rotation is on the lower side of the occupant's vehicle, and the occupant's head is positioned away from the instantaneous center of rotation of the cabin. Become. As a result, it is conceivable that the amount of movement of the occupant's head when the cabin tilts increases.

  In view of the above facts, the present invention can provide a vehicle that can tilt a seating portion on which a passenger sits and can reduce the amount of movement of the head of the passenger when the seating portion tilts. Is the purpose.

According to a first aspect of the present invention, there is provided a vehicle according to the present invention, comprising: a seating portion on which an occupant sits; An upper frame that extends over the other side is configured to support a steering wheel that is separate from the vehicle body that supports the seating portion and the vehicle body and that is disposed on one side in the vehicle longitudinal direction on one side. And the other side is a steering wheel support portion supported on one side in the vehicle longitudinal direction of the vehicle body on the vehicle longitudinal direction side of the seating portion and on the vehicle upper side, and the vehicle body is separated from the vehicle body on the one side. A driving wheel disposed on the other side in the direction, and the other side is supported by a supporting portion provided on the other side in the vehicle front-rear direction of the seating portion of the vehicle body and on the upper side of the vehicle. It is possible to change the distance between Has a pair of driving wheels supporting portion disposed on opposite sides of the upper frame.

  According to the first aspect of the present invention, the steering wheel disposed on one side of the vehicle longitudinal direction is supported on one side of the steering wheel support portion, and the other side of the steering wheel support portion is the vehicle longitudinal direction of the vehicle body. Supported on one side. In addition, the driving wheel disposed on the other side in the vehicle front-rear direction is supported on one side of the driving wheel support portion, and the other side of the driving wheel support portion is supported on the vehicle front and rear via the support portion provided on the vehicle body. It is supported on the other side in the direction. Therefore, when the vehicle is running, the vehicle is steered on one side of the vehicle front-rear direction and a driving force is applied to the vehicle from the other side of the vehicle front-rear direction.

  Further, in the present invention, the drive wheel support portion is provided as a pair, and the drive wheel support portion constitutes a vehicle body and from the vehicle longitudinal direction one side of the seating portion to the vehicle longitudinal direction other side of the seating portion. It is arranged to face each other with an upper frame extending over the area. Moreover, the distance between the support part provided in the vehicle body and the drive wheel can be changed by these drive wheel support parts. For this reason, by changing the distance between one support part and the drive wheel and the distance between the other support part and the drive wheel to different lengths by the respective drive wheel support parts, Can be tilted. Further, the moment generated when the vehicle body is tilted by the drive wheel support portion is transmitted from the vehicle longitudinal direction other side of the vehicle body to the vehicle longitudinal direction one side of the vehicle body via the upper frame. The behavior can be stabilized. When the vehicle body tilts as described above, the seating portion supported by the vehicle body also tilts with respect to the road surface as the vehicle body tilts.

  By the way, when the seating portion is tilted, if the instant rotation center of the seating portion is separated from the head of the occupant seated on the seating portion, the amount of movement of the occupant's head when the seating portion is tilted may increase. It is done.

  Here, in the present invention, the upper frame is disposed on the vehicle upper side of the seating portion. Further, the other side of the steering wheel support part is supported on one side in the vehicle front-rear direction and on the vehicle upper side than the seating part, and the other side of the drive wheel support part is on the other side in the vehicle front-rear direction of the seating part in the vehicle body and on the vehicle upper side. It is supported by a support portion provided on the side. For this reason, when the seating portion is tilted, the rotation axis of the seating portion is formed along the upper frame, and as a result, the instantaneous rotation center of the seating portion and the head of the occupant can be brought close to each other.

  As described above, the vehicle according to the first aspect of the present invention can tilt the seating portion on which the occupant is seated with respect to the road surface, and the amount of movement of the occupant's head when the seating portion is tilted. It has an excellent effect that it can be reduced.

It is a perspective view which shows the structure of the vehicle body of the vehicle which concerns on this embodiment. It is a perspective view which shows the structure of the vehicle which concerns on this embodiment.

  Hereinafter, an example of an embodiment of a vehicle according to the present invention will be described with reference to FIGS. 1 and 2. In addition, the arrow FR shown appropriately in each figure indicates the vehicle front side, the arrow UP indicates the vehicle upper side, and the arrow R indicates the vehicle width direction right side.

  First, the whole structure of the vehicle 10 which concerns on embodiment of this invention is demonstrated using FIG. As shown in FIG. 2, in the vehicle 10, one steering wheel 14 is disposed on the vehicle front side of the vehicle body 12, and a driving wheel 16 is illustrated on the vehicle rear left side of the vehicle body 12. It has a three-wheel structure in which non-driven drive wheels are arranged.

  The steered wheel 14 is configured by attaching a tire 20 to a rim 18, and the tread portion of the tire 20 has a center of curvature at the inside in the tire radial direction when viewed in the tire circumferential direction like a tire for a motorcycle. It is comprised by the circular arc shape which has. Further, a brake rotor 22 is attached to the rim 18, and a braking force is applied to the steered wheels 14 by the brake rotor 22 being sandwiched between brake calipers 38 described later. The steering wheel 14 is supported on the vehicle front side of the vehicle body 12 via members such as a swing arm 24 and a fork 26 as a steering wheel support portion.

  The swing arm 24 includes a support plate 30 that supports a steering drive unit 28 that applies a steering force to the steering wheel 14, a gear box 32 connected to the steering drive unit 28, and a pair of arm units 34. ing. As a drive source for the steering drive unit 28, a servo motor, a stepping motor, or the like can be employed.

  The arm portion 34 is configured in a plate shape that extends along an arc centered on the center portion of the steering wheel 14 in a side view of the vehicle and has a plate thickness direction as a vehicle width direction. One end 34A is pivotally supported on a front frame 72B of a main frame 72 described later. Moreover, the rectangular plate-like part extended as it is from the other end part 34B side of the arm part 34 constitutes a side wall part 36A facing the vehicle width direction of the casing 36 of the gear box 32, in other words, The arm part 34 and the housing 36 are integrally formed.

  On the other hand, a support plate 30 is arranged on the vehicle upper side of an upper wall (not shown) facing the vehicle upper side of the housing 36. The support plate 30 is formed in a rectangular plate shape, and a portion on the rear side of the vehicle is attached to the upper wall portion of the housing 36 by attachment means such as a bolt (not shown). A shock absorber 78 is attached to the upper surface of the support plate 30 as will be described later, and a mounting means such as a bolt (not shown) is provided on the rear side of the lower surface of the support plate 30 on the vehicle. The steering drive part 28 is attached by this.

  In addition, a plurality of gears (not shown) are arranged inside the housing 36, and the rotation speed and torque of the steering drive unit 28 are converted into magnitudes suitable for steering the steered wheels 14 by the plurality of gears. It has become so. The output of the steering drive unit 28 converted by these gears is transmitted from the gear box 32 to the fork 26.

  The fork 26 includes a pair of plate-like blade portions 26A whose plate thickness direction is the vehicle width direction, and a rectangular tube-shaped crown portion 26B spanned over the base end portion 26A1 of the blade portion 26A. Has been. The fork 26 rotatably supports the steering wheel 14 at the tip portion 26A2 of the blade portion 26A, and the longitudinal direction of the blade portion 26A from the center portion of the steering wheel 14 to the vehicle rear upper side when viewed in the vehicle width direction. It is arranged with the posture that becomes the direction to go. The fork 26 is provided with a shaft portion (not shown) that extends from the crown portion 26B to the opposite side of the blade portion 26A and in the same direction as the longitudinal direction of the blade portion 26A and to which a pinion gear is attached. The shaft portion is pivotally supported by the gear box 32 of the swing arm 24. A brake caliper 38 is disposed on the blade portion 26A, and the brake caliper 38 constitutes the front brake 40 together with the brake rotor 22 as described above.

  On the other hand, the drive wheel 16 is composed of a rim 42 and a tire 44 having a smaller diameter than that constituting the steering wheel 14, and the tread portion of the tire 44 is the same as the tread portion of the tire 20 constituting the steering wheel 14. It is configured. An in-wheel motor 46 is attached to the rim 42, and a driving force is applied to the drive wheels 16 by the in-wheel motor 46. The rim 42 is provided with a brake rotor and a brake caliper 38 (not shown) similarly to the steering wheel 14, and the rear brake 50 is configured by the brake rotor and the brake caliper 38. The drive wheel 16 is supported by a support portion 76 of the vehicle body 12 to be described later via a drive wheel support portion 52 that includes a variable arm 54 and an actuator 56. Since the vehicle 10 is basically configured to be bilaterally symmetric, the description of the configuration of the drive wheel (not shown) disposed on the right side in the vehicle width direction and the drive wheel support portion 58 that supports the drive wheel is provided. It will be omitted.

  The variable arm 54 includes a front upper arm 60, a rear upper arm 62, and a lower arm 64. The front upper arm 60 includes boss portions 60A and 60B provided at both ends in the longitudinal direction and a pair of side wall portions 60C in which the vehicle width direction is the plate thickness direction, and is rectangular when viewed in the vehicle width direction. And it is comprised in the box shape open | released in the vehicle front-back direction. A boss portion 60A on the vehicle upper side of the front upper arm 60 is pivotally supported on the vehicle front side of the support portion 76 of the vehicle body 12 as described later, and a boss portion 60B on the vehicle lower side of the front upper arm 60 is a lower arm 64. It is connected to.

The rear upper arm 62 includes bosses 62A and 62B provided at both ends in the longitudinal direction, a pair of side walls 62C having a vehicle width direction as a plate thickness direction, and a rear wall 62D facing the vehicle rear side. Are formed in a box shape that is rectangular when viewed in the vehicle width direction and is open on the vehicle front side. A boss portion 62A on the vehicle upper side of the rear upper arm 62 is pivotally supported on the vehicle rear side of the support portion 76 as will be described later, and a boss portion 62B on the vehicle lower side of the rear upper arm 62 is connected to the lower arm 64. ing. In the following, referred to connection portions between the front upper arm 60 and the support portion 76 and the connecting portion P _1, it referred to connection portion between the rear upper arm 62 and the support portion 76 and the connecting portion P _2.

  On the other hand, the lower arm 64 includes a side wall portion 64A constituting the outer side in the vehicle width direction, a side wall portion 64B constituting the inner side in the vehicle width direction, and a bottom wall portion 64C constituting the lower side of the vehicle. It is configured as an open box. The side wall 64A has a triangular plate shape whose longest side is the vehicle front upper side when viewed in the vehicle width direction, and the bottom wall 64C extends along the periphery of the side wall 64A on the vehicle lower side. ing. As described above, the boss portion 60B of the front upper arm 60 and the boss portion 62B of the rear upper arm 62 are connected to the side wall portion 64A of the lower arm 64.

More specifically, the boss portion 60B of the front upper arm 60 is attached to the center portion in the vehicle front-rear direction in the peripheral portion on the vehicle upper side of the side wall portion 64A. In a state the front upper arm 60 is assembled, as seen in the vehicle width direction, the longitudinal direction is arranged in a posture in which the direction from the connecting portion P ₁ on the vehicle rear lower side. On the other hand, the boss portion 62B of the rear upper arm 62 is attached to the vehicle rear side portion of the side wall portion 64A on the vehicle upper side peripheral portion. In a state rear upper arm 62 is assembled, similarly to the front upper arm 60, as viewed in the vehicle width direction, the longitudinal direction is arranged in a posture in which the direction from the connecting portion P ₂ in the vehicle rear lower side . That is, the front upper arm 60 and the rear upper arm 62 are arranged so as to maintain a substantially parallel positional relationship even if they rotate about their respective end portions. In the following, referred to connection portions between the front upper arm 60 and lower arm 64 and the connecting portion P _3, it referred to connection portion between the rear upper arm 62 and lower arm 64 and the connecting portion P _4.

On the other hand, the in-wheel motor 46 is supported at the vehicle front side end portion (one side of the drive wheel support portion 52) in the side wall portion 64 </ b> A of the lower arm 64. Then, as seen in the vehicle width direction, connecting the central portion O of the drive wheel 16, the connecting portion P ₃ and connecting portion P ₁ and the line connecting in this order, the central portion O, the coupling portion P ₄ and the connecting portion P ₂ in this order The line has a V-shape that protrudes toward the rear side of the vehicle. This can also be understood that the entire variable arm 54 is configured in a V-shape that protrudes toward the vehicle rear side.

  The actuator 56 is an electric cylinder including a drive unit 66, a cylinder unit 68, and a rod unit 70, and is configured such that the rod unit 70 moves relative to the cylinder unit 68 when the drive unit 66 is driven. The base end portion 56A on the cylinder portion 68 side of the actuator 56 is pivotally supported by the support portion 76 of the vehicle body 12, and the tip end portion 56B on the rod portion 70 side is on the vehicle front side of the side wall portion 64A of the lower arm 64. It is pivotally supported by a portion on the vehicle rear side with respect to the end portion.

  Here, the present embodiment is characterized in the configuration of the vehicle body 12 that supports the swing arm 24 and the drive wheel support portion 52. Hereinafter, the vehicle body 12 and the peripheral structure of the vehicle body 12 constituting the main part of the present embodiment will be described in detail.

  As shown in FIG. 1, the vehicle body 12 includes a main frame 72 that constitutes the skeleton of the vehicle body 12, a floor frame 74 that constitutes the vehicle lower side of the vehicle body 12, and a pair of support portions 76. Yes. The main frame 72 is configured by joining a plurality of plate members. The main frame 72 has a semicircular frame shape in which the diameter side is the vehicle upper side when viewed in the vehicle width direction, and is a cross-sectional view as viewed in the circumferential direction thereof. It has a closed cross-sectional structure having a rectangular frame shape. The main frame 72 constitutes an upper frame 72A constituting the vehicle upper side, a front frame 72B constituting the vehicle front side, a rear frame 72C constituting the vehicle rear side, and the vehicle lower side. And a lower frame 72D.

  More specifically, the upper frame 72A extends in the vehicle front-rear direction, and as shown in FIG. 2, shock absorbers 78 are disposed along the surfaces on one side and the other side in the vehicle width direction. . The upper frame 72A is provided with locking portions 80 on both sides in the vehicle width direction at the front side of the vehicle. One end of a shock absorber 78 is connected to the locking portion 80 via a free bearing (not shown). Are locked. Further, the other end portion (not shown) of the shock absorber 78 is locked to the vehicle rear side portion of the support plate 30 constituting the swing arm 24 through a free bearing in the same manner as the one end portion. That is, the swing arm 24 and the main frame 72 are connected by the shock absorber 78. A coil spring 82 is attached to the outer peripheral side of the outer cylinder of the shock absorber 78.

  The front frame 72B extends from the vehicle front side portion of the upper frame 72A toward the vehicle lower side, and the arm portion 34 constituting the swing arm 24 is provided on both sides of the front frame 72B in the vehicle width direction. Is arranged. In other words, the arm part 34 is disposed with the front frame 72B interposed therebetween. Further, as shown in FIG. 2, one end 34 </ b> A of the arm 34 is pivotally supported on the vehicle lower side portion of the front frame 72 </ b> B, and the swing arm 24 rotates with respect to the main frame 72. It is possible.

  The rear frame 72C extends from the vehicle rear side portion of the upper frame 72A toward the vehicle lower side, and support portions 76 are provided on both sides in the vehicle width direction of the rear frame 72C. Since the support portion 76 has the same configuration on the right and left sides in the vehicle width direction, only the configuration of the support portion 76 on the left side in the vehicle width direction will be described. The support portion 76 includes a box-shaped support frame 84, a pair of front attachment wall portions 86 extending from the support frame 84 toward the vehicle front side, and a pair extending from the support frame 84 toward the vehicle rear side. And a rear mounting wall portion 88.

  More specifically, the support frame 84 passes through a boundary portion of the rear frame 72C with the upper frame 72A and extends in the vehicle width direction, and a cross-sectional view viewed in the vehicle width direction has a longitudinal direction in the vehicle vertical direction. It has a rectangular frame shape. That is, the support portion 76 on the right side in the vehicle width direction and the support portion 76 on the left side in the vehicle width direction are provided continuously.

  Each of the front side mounting wall portion 86 and the rear side mounting wall portion 88 has a rectangular plate shape in which the tip end side is formed in an arc shape, and the plate thickness direction is a vehicle width direction, and the base end portion is a support frame. 84 is joined. Of the front mounting wall portion 86, the outer one in the vehicle width direction is disposed at the outer end portion of the support frame 84 in the vehicle width direction, and the inner one in the vehicle width direction is between the outer one in the vehicle width direction. The front upper arm 60 is disposed at an interval at which the front upper arm 60 can be disposed. And the insertion part 87 is provided in the front-end | tip part of the front side attachment wall part 86, and the pin 90 (connection member) is penetrated by the boss | hub part 60A of the said insertion part 87 and the front upper arm 60, A front upper arm 60 is pivotally supported at the tip.

  Further, the rear side mounting wall portion 88 of the outer side in the vehicle width direction is disposed at the end of the support frame 84 on the outer side of the vehicle width direction, and the inner side in the vehicle width direction is the outer side of the vehicle width direction. The rear upper arm 62 is arranged with a space between them. And the to-be-inserted part 89 is provided in the front-end | tip part of the rear side attachment wall part 88, and the pin 92 (connection member) is penetrated by the boss | hub part 62A of the said to-be-inserted part 89 and the rear upper arm 62. A rear upper arm 62 is pivotally supported at the tip. That is, the support portion 76 supports the other side of the drive wheel support portion 52. The base end portion 56 </ b> A of the actuator 56 is attached to the rear side of the vehicle with respect to the inserted portion 89 of the rear side attachment wall portion 88.

  The lower frame 72D is bridged between a vehicle lower side portion of the front frame 72B and a vehicle lower side portion of the rear frame 72C, and is curved so as to protrude downward in the vehicle rear direction when viewed in the vehicle width direction. ing. The lower frame 72D is provided with a floor frame 74 mainly composed of a pipe material. The lower frame 72D and the floor frame 74 support a seat 96 as a seating portion on which an occupant 94 is seated. Yes.

  The floor frame 74 includes a pair of main pipes 98 disposed in the vehicle width direction outside of the lower frame 72D with the longitudinal direction of the vehicle as a longitudinal direction, and a plurality of sub pipes 100 spanned between the main pipes 98 at a predetermined interval. It is comprised including. More specifically, the main pipe 98 is formed of a round pipe, and is arranged at a predetermined interval from the lower frame 72D in the vehicle width direction and extends along the lower frame 72D when viewed in the vehicle width direction. Exist. On the other hand, the sub-pipe 100 is formed of a round pipe shorter than the main pipe 98, and its longitudinal center is joined to the lower frame 72D while passing through the lower frame 72D, and both ends thereof are the main pipes. 98 is joined.

  A support pipe 102 bent in a V shape that protrudes upward in the vehicle when viewed in the vehicle width direction is provided at a portion of each main pipe 98 on the vehicle front side. The seat cushion 104 that constitutes the seat 96 and supports the buttocks and thighs of the occupant 94 is tilted from the upper front side of the vehicle toward the lower rear side of the vehicle at a portion of the support pipe 102 on the rear side of the vehicle. It is supported by. The seat cushion 104 is connected to a seat back 108 that supports the back portion of the occupant 94, and the seat back 108 is disposed obliquely from the lower front side of the vehicle toward the upper rear side of the vehicle at the initial position. A headrest 106 that supports the head of the passenger 94 is attached to the seat back 108. Therefore, in the state where the occupant 94 is seated on the seat 96, the position of the knee is higher than the position of the waist and the posture is close to the back. Further, the seat 96 is arranged so that the center line along the vehicle longitudinal direction overlaps the main frame 72 when viewed in the vehicle vertical direction, and the upper frame 72A is arranged above the seat 96 in the vehicle. It has become. In other words, the upper frame 72A extends from the vehicle front side to the vehicle rear side of the seat 96 on the vehicle upper side of the seat 96. That is, in a state where the occupant 94 is seated on the seat 96, the upper frame 72A is positioned on the vehicle upper side of the head of the occupant 94.

  As shown in FIG. 2, when the seat 96 is taken as a reference, the fork 26 is located on the gear box 32 of the swing arm 24 on the vehicle front upper side of the seat 96, more specifically on the vehicle upper side of the headrest 106. It is in a supported state. Further, when viewed with the seat 96 as a reference, the driving wheel support portions 52 and 58 are supported by the support portion 76 on the vehicle rear upper side of the seat 96, more specifically on the vehicle upper side of the headrest 106. Yes.

  On the other hand, the vehicle rear side of the main pipe 98 is connected to the support frame 84 via a sub pipe 100 joined to the end of the main pipe 98 on the vehicle rear side and a pair of connection pipes 103 attached to the sub pipe 100. ing. The connecting pipe 103 is arranged with the vehicle vertical direction as the longitudinal direction, and the vehicle lower end is joined to the sub pipe 100 and the vehicle upper end is joined to the support frame 84. ing.

  In addition, a pair of armrest frames 110 on which the arms of the occupant 94 are placed are attached to the main pipe 98 and the support pipe 102. Among these armrest frames 110, a joystick 112 is attached to the left side in the vehicle width direction, and a joystick 114 is attached to the right side in the vehicle width direction. Then, a control unit (not shown) controls the steering angle of the steering wheel 14 and the driving force of the driving wheel 16 based on the operation amount of the pedal 116 provided on the vehicle front side portion of the joysticks 112 and 114 and the floor frame 74. It is like that. The steering drive unit 28 and the in-wheel motor 46 are supplied with electric power from a battery 118 disposed on the vehicle rear side of the floor frame 74.

  Further, the control unit is configured to include a triaxial acceleration sensor, and the control unit operates the actuator 56 based on a signal from the triaxial acceleration sensor while the vehicle 10 is traveling, and the rod unit 70 in the actuator 56. The amount of extension from the cylindrical portion 68 is controlled. The actuator 56 is supplied with electric power from the battery 118 in the same manner as the electrical components described above. Further, the extension amount of the rod portion 70 of the actuator 56 can be adjusted to an arbitrary amount by operating it with an operation unit (not shown).

  Here, as described above, the actuator 56 is pivotally supported by the lower arm 64 and the support portion 76 that support the drive wheel 16, and therefore, by operating the actuator 56, the drive wheel 16 and the support portion 76 are connected. The distance can be changed. For example, when the vehicle 10 turns to the left side in the vehicle width direction, the control unit controls the actuator 56 on the left side in the vehicle width direction with respect to the actuator 56 on the left side in the vehicle width direction. Actuate to be pulled into. At this time, the variable arm 54 on the left side in the vehicle width direction is deformed in accordance with the operation of the actuator 56, and displaces the drive wheels 16 to the vehicle rear upper side with respect to the original position. That is, the vehicle 10 can tilt the vehicle body 12 leftward in the vehicle width direction by deforming the variable arm 54 when turning leftward in the vehicle width direction. Moreover, when the vehicle 10 is turning, the driving wheel 16 on the turning center side moves to the vehicle rear side with respect to the driving wheel on the opposite side to the turning center, so that the driving wheel 16 on the turning center side and the drive on the opposite side to the turning center are driven. It is possible to mitigate the difference in rotational speed from the wheel.

(Operation and effect of this embodiment)
Next, the operation and effect of this embodiment will be described.

  In this embodiment, as shown in FIGS. 1 and 2, the steering wheel 14 disposed on one side in the vehicle front-rear direction is supported on one side of the fork 26, and the other side of the fork 26 is the vehicle of the vehicle body 12. It is supported on one side in the front-rear direction. Further, the drive wheel 16 disposed on the other side in the vehicle front-rear direction is supported on one side of the drive wheel support portion 52, and the other side of the drive wheel support portion 52 is provided via a support portion 76 provided on the vehicle body 12. The vehicle body 12 is supported on the other side in the vehicle longitudinal direction. Therefore, when the vehicle 10 is traveling, the vehicle 10 is steered on one side of the vehicle body 12 in the vehicle longitudinal direction, and driving force is applied to the vehicle 10 from the vehicle longitudinal direction other side of the vehicle body 12.

  In the present embodiment, the driving wheel support portions 52 and 58 are provided as a pair. These drive wheel support portions 52 and 58 are opposed to each other with an upper frame 72A constituting the vehicle body 12 and extending from one side of the seat 96 in the vehicle longitudinal direction to the other side of the seat 96 in the vehicle longitudinal direction. Is arranged. Further, the distance between the support portion 76 provided on the vehicle body 12 and the drive wheel 16 can be changed by the drive wheel support portions 52 and 58. For this reason, by changing the distance between the one support portion 76 and the drive wheel 16 and the distance between the other support portion 76 and the drive wheel to different lengths by the drive wheel support portions 52 and 58, the vehicle The vehicle body 12 can be tilted when, for example, 10 turns. The moment generated when the vehicle body 12 is tilted by the drive wheel support portions 52 and 58 is transmitted from the vehicle longitudinal direction other side of the vehicle body 12 to the vehicle longitudinal direction one side of the vehicle body 12 via the upper frame 72A. The behavior of the vehicle body 12 when tilting can be stabilized. When the vehicle body 12 tilts as described above, the seat 96 supported by the vehicle body 12 also tilts with respect to the road surface as the vehicle body 12 tilts.

  By the way, when the seat 96 is tilted, if the center of instantaneous rotation of the seat 96 is separated from the head of the occupant 94 seated on the seat 96, the amount of movement of the occupant 94's head when the seat 96 is tilted increases. Can be considered. The instantaneous center of rotation referred to here is defined by the geometric restriction of the link members such as the drive wheel support portions 52 and 58 when the seat 96 tilts in the vehicle 10 that is displaced momentarily by traveling. It means a virtual axis of rotation that is temporarily determined.

  Here, in the present embodiment, the upper frame 72A is arranged on the vehicle upper side of the seat 96. The other side of the fork 26 is supported on one side in the vehicle front-rear direction and on the vehicle upper side of the seat 96, and the other side of the drive wheel support portions 52, 58 is on the other side in the vehicle front-rear direction of the seat 96 in the vehicle body It is supported by a support portion 76 provided on the upper side of the vehicle. Therefore, when the seat 96 is tilted, the rotational axis of the seat 96 is formed along the upper frame 72A, and as a result, the instantaneous center of rotation of the seat 96 and the head of the occupant 94 can be brought close to each other. Therefore, in the present embodiment, the seat 96 on which the occupant 94 is seated can be tilted with respect to the road surface, and the amount of movement of the head of the occupant 94 can be reduced when the seat 96 is tilted. Thereby, for example, during traveling of the vehicle, the influence on the semicircular canal of the occupant 94 due to the tilting of the seat 96 can be suppressed.

  The vehicle 10 is not limited to the above configuration, and the driving wheel 16 and the driving wheel support portions 52 and 58 are disposed on the front side of the vehicle, and the steering wheel 14, the swing arm 24, and the fork 26 are disposed on the rear side of the vehicle. Also good.

DESCRIPTION OF SYMBOLS 10 Vehicle 12 Car body 14 Steering wheel 16 Drive wheel 26 Fork (steering wheel support part)
52 Drive Wheel Support 58 Drive Wheel Support 72A Upper Frame 76 Support 94 Passenger 96 Seat (Sitting)

Claims (1)

A seating section on which an occupant sits;
An upper frame that is disposed on the vehicle upper side of the seating portion and extends from one side of the seating portion in the vehicle front-rear direction to the other side of the seating portion in the vehicle front-rear direction and supports the seating portion. The vehicle body
The vehicle body is separated from the vehicle body , supports a steering wheel disposed on one side of the vehicle longitudinal direction on one side, and the other side is on the vehicle longitudinal direction side of the seating portion and on the vehicle upper side of the vehicle longitudinal direction of the vehicle body. A steering wheel support supported on one side;
The vehicle body is separated from the vehicle body and supports driving wheels disposed on the other side in the vehicle longitudinal direction on one side and the other side is provided on the vehicle longitudinal direction other side of the seating portion in the vehicle body and on the vehicle upper side. A pair of drive wheel support portions disposed opposite to each other with the upper frame interposed therebetween, and the distance between the support portion and the drive wheel can be changed.
Vehicle with.

Images