JP7599201B2 - Off-road vehicles - Google Patents

Description

This invention relates to an off-road vehicle that can be ridden standing up and is suitable for driving on rough terrain such as mountain forests.

Japan's forests are required to be cultivated, maintained, and managed as sustainable environmental resources. However, many of them are located in steep, undulating mountainous areas. There is a demand for a means of transportation on rough terrain such as these steep, undulating mountain forests.

Patent Document 1 proposes an off-road vehicle that can be ridden while standing and is suitable for traveling on off-road terrain such as forest land. The off-road vehicle disclosed in Patent Document 1 includes a vehicle body frame, left and right crawlers connected to the vehicle body frame, a riding section that can be ridden while standing, and a handle extending upward from the vehicle body frame. The vehicle body frame has a crawler support section that supports the crawler so that it can swing up and down via a first support shaft that extends in the left-right direction of the vehicle body, and an interlocking connection mechanism that interlocks and connects the left and right crawlers so that they can swing back and forth in the up-down direction. The left and right crawlers have first connection sections provided on the rear side of their track frames that are connected to the vehicle body frame via the first support shaft, and second connection sections provided on the front side of the track frame that are connected to the vehicle body frame via the interlocking connection mechanism.

According to the above configuration, for example, when one of the left and right crawlers climbs onto a raised portion of uneven ground, that crawler will oscillate upward with the first support shaft as a fulcrum relative to the vehicle frame, and the other crawler on the opposite side will oscillate downward with the first support shaft as a fulcrum relative to the vehicle frame. Also, when one of the left and right crawlers enters a sunken portion of uneven ground, that crawler will oscillate downward with the first support shaft as a fulcrum relative to the vehicle frame, and the other crawler on the opposite side will oscillate upward with the first support shaft as a fulcrum relative to the vehicle frame, depending on the entry.

In this way, when one of the left or right crawlers climbs onto a raised portion or enters a sunken portion, the left and right crawlers oscillate up and down in opposing directions relative to the vehicle frame, so that the vertical oscillation of each crawler relative to the vehicle frame can be suppressed while also suppressing left and right tilt of the vehicle body caused by one of the crawlers climbing onto a raised portion or entering a sunken portion.

The body of an off-road vehicle tilts when traveling uphill, downhill, or across a slope, and the direction of gravity changes. Regardless of the tilt of the vehicle body, the occupant tries to maintain his or her body balance on the axis of gravity.

In the off-road vehicle described in Patent Document 1, a handlebar post with a handlebar connected to its upper end is attached to the vehicle body so that it can swing back and forth, and an angle adjustment mechanism is provided on the handlebar post, making it possible to adjust the angle of the handlebar post in the fore-aft direction.

JP 2020-59416 A

The angle adjustment mechanism in the off-road vehicle described in Patent Document 1 above has multiple recesses and engaging claws that engage with the recesses. By operating the control lever, the recesses and engaging claws are disengaged, and after adjusting the angle, the control lever is released to engage the recesses and engaging claws.

In the off-road vehicle described in Patent Document 1, in order to adjust the fore-aft angle of the handle post, it is necessary to get off the vehicle and operate the control lever, which is time-consuming. For this reason, when switching from flat ground driving to uphill driving or downhill driving, the vehicle must be stopped each time to adjust the fore-aft angle of the handle post, making it impossible to drive continuously.

In addition, when riding sideways on a slope, the direction of gravity changes from side to side on the vehicle body. However, simply adjusting the angle of the handlebar post in the front-to-rear direction is not enough to accommodate the change in gravity from side to side on the vehicle body, making it difficult to adopt an appropriate riding posture.

The objective of this invention is to provide an off-road vehicle that can continuously travel on flat ground, uphill, downhill, and across slopes, and that can assume an appropriate riding posture in any driving condition.

The inventors have studied the riding posture of off-road vehicles. The basic riding posture is standing, and in order to travel on unstable, off-road slopes, the rider holds onto the handlebars to maintain that posture. They have devised a configuration that allows the rider to easily maintain the riding posture while holding onto the handlebars, without excessive effort.

The direction of gravity on the vehicle body changes significantly when it is traveling on flat ground, uphill, downhill, or traversing a slope.

When a human stands on a slope, he or she balances the body along the axis of gravity. When riding in an off-road vehicle, the occupant attempts to maintain a posture that aligns the body balance with the axis of gravity, regardless of the inclination of the vehicle body.

However, if the angle of the handlebar post is fixed perpendicular to the vehicle body, the handlebar post will stand perpendicular to the slope. This will cause the rider holding onto the handlebars attached to the handlebar post to lose balance. The inventors have therefore discovered that by keeping the handlebar post oriented along the axis of gravity, the rider can maintain balance even when the vehicle body is tilted forwards, backwards, left or right.

Taking this into consideration, the inventor discovered that by fixing the handlebars at an appropriate angle to match the riding position, the rider can adopt an appropriate riding position.

After much deliberation, the inventor came up with the following configuration:

An off-road vehicle according to one embodiment of the present invention includes a body frame, left and right crawlers connected to the body frame, a riding section on which a person can stand, a handle post extending upward from the body frame, and a handle bar provided on an upper portion of the handle post,
a support portion that supports the handle post on the body frame so as to be movable in a front-rear direction or a left-right direction or a front-rear direction and a left-right direction;
and a handle post movement control means for controlling the movement of the handle post.

According to an off-road vehicle according to one embodiment of the present invention, the handle post is supported on the body frame so as to be freely movable in the front-rear or left-right or front-rear and left-right directions, and the handle post movement control means stops the movement of the handle post after the handle post has moved a predetermined amount in the front-rear or left-right or front-rear and left-right directions. For example, the handle post can be moved in a direction along the axis of gravity and stopped in that state, allowing the occupant to maintain balance.

The handle post can be moved and stopped without stopping the off-road vehicle. This allows for continuous travel on flat ground, uphill, downhill, and across slopes.

From another perspective, it is preferable that an off-road vehicle according to an embodiment of the present invention includes the following configuration: The handle post movement control means includes an actuator unit that moves the handle post in the front-rear direction, the left-right direction, or the front-rear and left-right directions.

According to the above configuration, the handle post can be moved in the front-rear or left-right or front-rear and left-right directions by the actuator unit, enabling continuous travel such as traveling on flat ground, climbing uphill, descending downhill, and traversing a slope.

The handlebar post is supported on the body frame so that it can move freely in the front-rear and left-right directions, and the handlebar post can be moved in the front-rear and left-right directions by an actuator unit, allowing the rider to take an appropriate riding posture in any riding condition.

From another perspective, it is preferable that an off-road vehicle according to an embodiment of the present invention includes the following configuration: The support unit has a universal joint that rotates and tilts in the front, rear, left and right directions, and supports the handle post so that it can move freely in the front, rear, left and right directions, and the actuator unit includes a front-rear actuator that moves the handle post in the front-rear direction, a left-right actuator that moves the handle post in the left-right direction, and a control device that controls the drive of the front-rear actuator and the left-right actuator.

According to the above configuration, by controlling the drive of the front and rear actuators and the left and right actuators, it is possible to adopt an appropriate riding posture in any driving condition.

From another perspective, it is preferable that an off-road vehicle according to an embodiment of the present invention includes the following configuration: A switch means is provided on the handlebar and provides an instruction signal to the control device, and the control device controls the drive of the front and rear actuators and the left and right actuators in response to an instruction input by the switch means.

According to the above configuration, the handlebar post can be moved to an appropriate angle by a switch means provided on the handlebar, and the handlebar held by the rider can be kept in an appropriate position. This allows the rider to take an appropriate riding posture in any riding condition.

From another perspective, it is preferable that an off-road vehicle according to an embodiment of the present invention includes the following configuration: The switch means is a joystick, and when the joystick is moved in the front-rear direction of the vehicle, the control device controls the drive of the front-rear actuator, causing the handle post to move in the front-rear direction, and when the joystick is moved in the left-right direction of the vehicle, the control device controls the drive of the left-right actuator, causing the handle post to move in the left-right direction.

As described above, by configuring the switch means as a joystick, the rider can easily instruct the handlebar post to move in the desired forward/backward/left/right direction.

From another perspective, it is preferable that an off-road vehicle according to an embodiment of the present invention includes the following configuration: An inclination sensor is provided on the handle post, and the control device controls the driving of the front/rear actuator and the left/right actuator so that the handle post is aligned with the gravity axis direction.

With the above configuration, the tilt sensor allows the handlebar post to be moved forward, backward, left and right to the optimal angle. This allows the rider to take an appropriate riding posture in any riding condition.

From another perspective, it is preferable that an off-road vehicle according to an embodiment of the present invention includes the following configuration: The control device controls the driving of the front/rear actuator and the left/right actuator so as to maintain the handle post in a state in which it overshoots the direction of gravity by a predetermined angle toward the mountain side.

With the above configuration, the handlebar post is maintained in a state where it overshoots the direction of gravity by a certain angle toward the mountain side, creating room for maneuvering. This makes driving easier for the occupant.

This specification describes an embodiment of an off-road vehicle according to the present invention.

In the following description, numerous specific examples are provided to provide a thorough understanding of the invention. However, it will be apparent to one skilled in the art that the invention can be practiced without these specific examples.

The following disclosure should therefore be considered as illustrative of the invention and is not intended to limit the invention to the specific embodiments illustrated in the drawings or description below.

[Handle post movement control means]
In this specification, the handle post movement control means controls the movement of the handle post in the front-rear direction, left-right direction, or front-rear and left-right direction, which is supported on the vehicle frame by a support part so as to be movable in the front-rear direction, left-right direction, or front-rear and left-right direction. The handle post movement control means includes a means for mechanically controlling the movement of the handle post, and a means for electrically controlling the movement of the handle post. For example, the handle post movement control means for mechanically controlling the movement of the handle post can be composed of a brake or the like that stops the expansion and contraction of the expandable and contractible member that expands and contracts due to the movement of the handle post in the front-rear direction, left-right direction, or front-rear and left-right direction, which is attached between the handle post and the vehicle frame. For example, the handle post movement control means for electrically controlling the movement of the handle post can be composed of a load resistance component of the actuator unit in a state where the movement operation of the actuator unit that moves the handle post in the front-rear direction, left-right direction, or front-rear and left-right direction is stopped.

According to the off-road vehicle of this invention, the handle post is supported on the body frame so as to be freely movable in the front-rear or left-right or front-rear and left-right directions, and the handle post movement control means stops the movement of the handle post when the handle post has moved a specified amount in the front-rear or left-right or front-rear and left-right directions, allowing the rider to maintain balance. The handle post can be moved and stopped without stopping the off-road vehicle. This makes it possible to continuously travel on flat ground, uphill, downhill, and across slopes. In addition, the rider can assume an appropriate riding posture in any driving condition.

FIG. 1 is a side view of an all-terrain vehicle according to an embodiment of the present invention with a crawler cover removed. FIG. 2 is a front view of the off-road vehicle according to the embodiment of the present invention. FIG. 3 is an enlarged perspective view showing a handlebar portion of the off-road vehicle according to the embodiment of the present invention. FIG. 4 is a perspective view showing the rough terrain vehicle according to the embodiment of the present invention from the rear side with one of the crawlers removed. FIG. 5 is a perspective view showing the rough terrain vehicle according to the embodiment of the present invention from the front side with one of the crawlers removed. FIG. 6 is a front view of an off-road vehicle according to one embodiment of the present invention, with the left and right swing links visible. FIG. 7 is a rear view of the rough terrain vehicle according to the embodiment of the present invention with the crawlers removed. FIG. 8 is a perspective view showing an all-terrain vehicle according to one embodiment of the present invention, with the handle post tilted forward. FIG. 9 is an enlarged perspective view of a portion A enclosed by a dashed line in FIG. FIG. 10 is an enlarged perspective view of a portion A enclosed by a dashed line in FIG. 8, as viewed from the rear side of the vehicle body. FIG. 11 is a perspective view showing a running state of an off-road vehicle according to one embodiment of the present invention, in which the vehicle is running on flat ground. FIG. 12 is a side view showing a running state of the off-road vehicle according to the embodiment of the present invention, in which the vehicle is running on flat ground. FIG. 13 shows a running state of the off-road vehicle according to the embodiment of the present invention, and is a front view showing a running state on flat ground. FIG. 14 is a side view showing a running state of the off-road vehicle according to the embodiment of the present invention, in which the vehicle is traveling uphill. FIG. 15 is a side view showing a running state of the off-road vehicle according to the embodiment of the present invention, and showing a state of running downhill. FIG. 16 is a front view showing a running state of the off-road vehicle according to one embodiment of the present invention, in which the vehicle is traveling lateral on a slope. FIG. 17 is a perspective view showing a traveling state of an all-terrain vehicle according to one embodiment of the present invention, and showing a state in which the vehicle is climbing obliquely up a slope. FIG. 18 is a front view of an all-terrain vehicle according to the second embodiment of the present invention. FIG. 19 is an enlarged perspective view showing a handlebar portion of an all-terrain vehicle according to a third embodiment of the present invention. FIG. 20 is a top view of an all-terrain vehicle according to a third embodiment of the present invention. FIG. 21 is a front view of an all-terrain vehicle according to a third embodiment of the present invention.

Each embodiment will be described below with reference to the drawings. Note that the dimensions of the components in each drawing do not faithfully represent the actual dimensions of the components or the dimensional ratios of each component.

In the following, arrow F in the figures indicates the forward direction of the off-road vehicle. Arrow RR in the figures indicates the rearward direction of the off-road vehicle. Arrow U in the figures indicates the upward direction of the off-road vehicle. Additionally, the forward, backward, left and right directions respectively refer to the forward, backward, left and right directions as seen by the driver of the off-road vehicle.

1 is a side view of an off-road vehicle according to one embodiment of the present invention with the crawler cover removed, FIG. 2 is a front view of the off-road vehicle according to one embodiment of the present invention, and FIG. 3 is an enlarged perspective view of the handlebar portion of the off-road vehicle according to one embodiment of the present invention. FIG. 4 is a perspective view showing the off-road vehicle according to one embodiment of the present invention from the rear side with one crawler removed, FIG. 5 is a perspective view showing the off-road vehicle according to one embodiment of the present invention with one crawler removed from the front side, and FIG. 6 is a front view of the off-road vehicle according to one embodiment of the present invention, with the front member removed to expose the left and right swing links. FIG. 7 is a rear view of the off-road vehicle according to one embodiment of the present invention with the crawler removed.

As shown in Figures 1 to 7, the off-road vehicle 100 in this embodiment has a vehicle body 1, a left crawler 2a, a right crawler 2b, and a handle unit 4. The handle unit 4 includes a handle post 43 and a handle bar 44.

The left crawler 2a and the right crawler 2b are driven independently by a drive sprocket 22. The left and right drive sprockets 22 are driven by their respective electric motors 21. In this embodiment, the drive sprockets 22 are directly attached to the electric motors 21. The left crawler 2a and right crawler 2b, including the drive mechanism, are housed about 30 cm above the ground, realizing a drive mechanism with an ultra-low center of gravity.

The vehicle body 1 has a vehicle body frame 10. The left crawler 2a and the right crawler 2b are rotatably supported at the rear of the vehicle body 1 relative to the vehicle body frame 10 via crawler supports 18a and 18b, respectively. The left crawler 2a and the right crawler 2b are suspended via a left-right swing link 17 attached to the vehicle body frame 10 at the front of the vehicle body 1. This improves the vehicle's ability to overcome steps and its ability to contact rough ground, ensuring the vehicle's ability to travel on rough ground with severe bumps.

In this embodiment, a handle post 43 is attached to the vehicle body frame 10 by a support portion 50 so that the angle can be freely adjusted in the front-rear and left-right directions. The handle post 43 can be fixed in a direction along the gravity axis by a handle post movement control means 60 so that the angle can be freely adjusted. This makes it possible to assist the weight balance of the occupant D who grips the handle bar 44 attached to the handle post 43. As a result, the occupant D can ride the rough terrain vehicle 100 without feeling anxious about falling over while satisfying the necessary requirements for driving on an incline. The rough terrain vehicle according to this embodiment will be further described below with reference to the drawings.

As shown in Figures 1 to 7, the off-road vehicle 100 according to this embodiment includes a body frame 10 that forms the framework of the vehicle body 1, a left crawler 2a and a right crawler 2b that are connected to the body frame 10, a riding section 3 that can be stood on, and a handle section 4 that is attached to the body frame 10.

The handlebar section 4 includes a handlebar post 43 that extends above the body frame 10, and a handlebar 44 that is attached to the upper part of the handlebar post 43. The handlebar post 43 is supported on the body frame 10 via a support part 50 so that it can move freely back and forth and left and right. The support part 50 and the handlebar post 43 will be described later.

As shown in Figures 4 and 5, the body frame 10 is formed into a substantially rectangular shape in a plan view by welding together left and right side members 11 that extend in the fore-and-aft direction of the body 1, a first cross member 12 that spans the front sides of the left and right side members 11, and a second cross member 13 that spans the rear ends of the left and right side members 11. A central member 14 is fixed to the top surface of the first cross member 12, extending forward from the center of the left and right sides.

A handle support base 15 is provided at the front end of the upper surface of the central member 14, and is fixed perpendicular to the central member 14. A lower member 16 is provided at the front end of the lower surface of the central member 14, and is fixed perpendicular to the central member 14.

The handle support base 15 is fitted with a support section 50 that supports the handle post 43 from the front, rear, left and right, and a left and right actuator 61 and a front and rear actuator 62 that constitute the handle post movement control means 60.

As shown in Figures 1, 2, and 4 to 7, the vehicle body frame 10 has a support shaft 5a extending laterally to the left of the vehicle body 1 and a support shaft 5b extending to the right of the vehicle body 1. The vehicle body frame 10 has crawler support parts 18a, 18b that support the left crawler 2a and the right crawler 2b via the support shafts 5a, 5b so that they can swing up and down, respectively, and a left-right swing link 17 that interlocks and connects the left crawler 2a and the right crawler 2b so that they can swing back and forth in the vertical direction.

The left crawler support 18a has a left bracket 180a that projects outward to the left from the rear of the left side member 11, a support shaft 5a attached to the left bracket 180a, and a bearing 19a that rotatably supports the support shaft 5a provided on the left crawler frame 20.

The right crawler support 18b has a right bracket 180b that projects outward to the right from the rear of the right side member 11, a support shaft 5b attached to the right bracket 180b, and a bearing 19b that rotatably supports the support shaft 5b provided on the right crawler frame 20.

As shown in Figures 1, 2, and 4 to 7, the left crawler 2a and the right crawler 2b each have a crawler frame 20 extending in the fore-and-aft direction of the vehicle body 1, a drive sprocket 22 supported via an electric motor 21 at the rear end of the crawler frame 20, a tension-type idler wheel 23 supported via a tension mechanism (not shown) at the front end of the crawler frame 20, front and rear wheels 25, 26 supported via an equalizer arm 24 at the midpoint between the front and rear of the crawler frame 20, and a crawler belt 27 stretched across the drive sprocket 22, the idler wheel 23, and the front and rear wheels 25, 26. Each electric motor 21 is an in-wheel motor attached to the drive sprocket 22, and is equipped with an inverter (not shown) and a reduction mechanism (not shown) inside.

In addition, the crawler cover 29 is not shown in Figures 1, 4, and 5. As shown in Figure 8, the left crawler 2a and the right crawler 2b are fitted with crawler covers 29, which are configured to cover the drive sprocket 22, the idler wheel 23, and the wheels 25 and 26 from the outside.

The left crawler 2a and the right crawler 2b are configured to be electrically driven, independently driven by the left and right electric motors 21, respectively. As described below, the driving of the electric motors 21 is controlled by instructions from a joystick 66, which serves as a driving operation unit attached to the handlebar 44. As a result, the rough terrain vehicle 100 moves straight forward when the left crawler 2a and the right crawler 2b are driven at a constant speed in the forward rotation direction, and moves straight backward when the left crawler 2a and the right crawler 2b are driven at a constant speed in the reverse rotation direction.

The rough terrain vehicle 100 turns to the left or right in the forward direction by driving the left crawler 2a and the right crawler 2b at unequal speeds in the forward rotation direction. The left crawler 2a and the right crawler 2b are driven at unequal speeds in the reverse rotation direction, so that the vehicle turns to the left or right in the reverse direction. The rough terrain vehicle 100 pivots by driving one of the left crawler 2a and the right crawler 2b while the other crawler 2 is stopped, and spins by driving the left crawler 2a and the right crawler 2b at equal speeds in the forward and reverse rotation directions.

In addition, the off-road vehicle 100 can brake and stop the left crawler 2a and the right crawler 2b using left and right disc brakes (not shown), so that the vehicle can be reliably maintained in a braked stopped state even when used on rough terrain such as steep forested areas.

As shown in Figures 1, 2 and 8, the riding section 3 is formed by a floor panel 30 supported by the vehicle body frame 10. The floor panel 30 is bent so that it has step sections 30a on both left and right ends and a base section 30b on the left and right central side. A seat 8 is removably attached to the rear side of the base section 30b via a number of springs 7 that function as shock-absorbing members. Left and right fenders 31 are attached to the floor panel 30, extending from both left and right ends toward above the left crawler 2a and right crawler 2b.

As shown in Figures 1 to 7, the left crawler 2a and the right crawler 2b are connected to the vehicle body frame 10 via bearings 19a, 19b and support shafts 5a, 5b provided on the rear side of the crawler frame 20, and the connecting part 20b provided on the front side of the crawler frame 20 is connected to the vehicle body frame 10 via a left/right swing link 17. Bearings that allow relative rotation between the bearings 19a, 19b and the support shafts 5a, 5b are provided.

As shown in Figures 4 and 6, the left-right swing link 17 has a support shaft 70 extending in the front-rear direction of the vehicle body 1, a balance arm 71 supported on the first cross member 12 of the vehicle body frame 10 via the support shaft 70 so as to be able to swing up and down, and left and right dampers 72 extending from the left and right free ends of the balance arm 71 to the connecting parts 20a, 20b of the crawler frame 20. Universal joints 73 are provided on the left and right free ends of the balance arm 71, and the balance arm 71 is connected to the left and right side members 11 of the vehicle body frame 10.

With the above-mentioned configuration, the rough terrain vehicle 100 has the crawler support parts 18a, 18b and the left/right swing link 17 on its body frame 10, so that, for example, when the left crawler 2a on the left side of the vehicle body runs over a bump on the rough terrain, the left crawler 2a on the left side of the vehicle body swings upward relative to the body frame 10 around the support shaft 5a, and the right crawler 2b on the right side of the vehicle body swings downward relative to the body frame 10 around the support shaft 5b (see Figure 4).

For example, when the left crawler 2a on the left side of the vehicle body enters a sunken section on uneven ground, the left crawler 2a on the left side of the vehicle body swings downward relative to the vehicle body frame 10 on the support shaft 5a, and the right crawler 2b on the right side of the vehicle body swings upward relative to the vehicle body frame 10 on the support shaft 5b.

In this way, when either the left crawler 2a or the right crawler 2b rides over a raised portion or enters a sunken portion, the left crawler 2a or the right crawler 2b swings up and down in an opposing manner relative to the vehicle body frame 10, so that it is possible to suppress the left and right tilt of the vehicle body 1 caused by either the left crawler 2a or the right crawler 2b riding over a raised portion or entering a sunken portion while suppressing the up and down swing of the left crawler 2a or the right crawler 2b relative to the vehicle body frame 10. As a result, it is possible to improve the drivability on uneven ground such as mountain forests with many undulating areas, and to provide a sense of security to the occupant D in the riding section 3.

Next, the support portion 50 and the handle post 43 will be described with reference to Figs. 8 to 10. Fig. 8 is a perspective view showing an off-road vehicle according to one embodiment of the present invention, with the handle post 43 tilted forward. Fig. 9 is an enlarged perspective view of part A surrounded by a dashed line in Fig. 8, and Fig. 10 is an enlarged perspective view of part A surrounded by a dashed line in Fig. 8, as viewed from the rear of the vehicle body 1.

As shown in Figures 8 to 10, the lower end of the handle post 43 is supported on the front side of the body frame 10 via a support part 50 so that it can move freely back and forth and left and right. A handle bar 44 is attached to the upper end of the handle post 43.

The support part 50 has a first support part 50a and a second support part 50b that constitute a universal joint. The first support part 50a is fixed to the handle support base 15, and the second support part 50b is attached to the first support part 50a so as to be movable in the left-right direction. The second support part 50b is attached to the handle support base 15 so as to be movable in the left-right direction of the vehicle frame 10.

The lower end of the handle post 43 is fixed to the second support part 50b. The second support part 50b supports the fixed handle post 43 so that it can move freely in the front-rear direction relative to the body frame 10. Since the second support part 50b is attached to the handle support base 15 so that it can move freely in the left-right direction of the body frame 10, the handle post 43 fixed to the second support part 50b is supported so that it can move freely in the left-right direction relative to the body frame 10 via the second support part 50b.

In this way, the handle post 43 is supported so as to be movable forward, backward, left and right relative to the body frame 10 via the first support part 50a and the second support part 50b that constitute the support part 50.

The movement of the handle post 43 in the forward/backward and left/right directions is controlled by the handle post movement control means 60. The handle post movement control means 60 stops the movement of the handle post 43 when the handle post 43 has moved a predetermined amount in the forward/backward or left/right direction.

In this embodiment, the handle post movement control means 60 is composed of a left-right actuator 61 that moves the handle post 43 left-right, and a front-rear actuator 62 that moves the handle post 43 forward-rear.

The left and right actuators 61 have a main body 61d, a rod 61a that enters and exits the main body 61d, and an actuator driver 61b that moves the rod 61a in the direction extending from or retracting to the main body 61d. The actuator driver 61b and the main body 61d are attached to a base 61c. For example, the left and right actuators 61 have an actuator made of a trapezoidal screw in the main body 61d, and by driving the actuator driver 61b made of a motor, the trapezoidal screw is rotated and the rod 61a connected to the trapezoidal screw is moved in the direction extending from or retracting to the main body 61d.

The base 61c is attached so as to be freely swingable to the handle support base 15. The tip of the rod portion 61a is attached so as to be freely swingable to the handle post 43.

When the actuator drive unit 61b is driven to extend or retract the rod portion 61a from the main body portion 61d, the handle post 43 moves left and right. When the rod portion 61a extends from the length of the rod portion 61a at a position perpendicular to the left and right direction of the vehicle body 1, the handle post 43 moves so as to tilt leftward relative to the vehicle body 1. Conversely, when the rod portion 61a moves in a retracting direction, the handle post 43 moves so as to tilt rightward relative to the vehicle body 1. In other words, when the rod portion 61a extends, the handle post 43 moves leftward relative to the vehicle body 1, and when the rod portion 61a retracts, the handle post 43 moves rightward.

The front-rear actuator 62 has a main body 62d, a rod 62a that enters and exits the main body 62d, and an actuator drive 62b that moves the rod 62a in the direction extending or retracting from the main body 62d. The actuator drive 62b and the main body 62d are attached to a base 62c. For example, like the left-right actuator 61, the front-rear actuator 62 also has an actuator unit with a trapezoidal screw or the like inside the main body 62d.

The base 62c is attached so as to be freely swingable to the handle support base 15. The tip of the rod portion 62a is attached so as to be freely swingable to the handle post 43.

When the actuator drive unit 62b is driven to extend or retract the rod portion 62a from the main body portion 62d, the handle post 43 moves forward and backward. When the rod portion 62a extends from the length of the rod portion 62a at a position perpendicular to the front-to-rear direction of the vehicle body 1, the handle post 43 moves so as to tilt forward relative to the vehicle body 1. Conversely, when the rod portion 62a moves in a retracting direction, the handle post 43 moves so as to tilt backward relative to the vehicle body 1. In other words, when the rod portion 62a extends, the handle post 43 moves forward relative to the vehicle body 1, and when the rod portion 62a retracts, the handle post 43 moves backward.

In this embodiment, a switch means attached to the handlebar 44 issues a command to move the handle post 43 forward/backward or left/right. In this embodiment, the switch means is composed of a joystick 67. The joystick 66 is attached near the brake lever 69 on the left side of the handlebar 44, and is operated, for example, by the thumb or index finger of the left hand of the occupant D. When the joystick 66 is operated, a signal is sent to a control device 63 (described later), and based on this command signal, the control device 63 controls the drive of the actuator drivers 61b, 62b, causing the rod parts 61a, 62a to protrude and retract from the main body parts 61d, 62d by a predetermined length, thereby stopping the drive of the actuator drivers 61b, 62b.

The movement of the handle post 43 stops when the handle post 43 has moved a predetermined amount in the front-back or left-right direction. For example, by moving the handle post 43 in a direction along the gravity axis and stopping the handle post 43 in that state, the occupant D can maintain balance. When the drive of the actuator drivers 61b, 62b is stopped, the stopped state of the handle post 43 is maintained by the load resistance component of the actuator drivers 61b, 62b, for example, the load resistance that rotates the trapezoidal screw.

The handlebar 44 only guides the inclination of the occupant D's body, so it is sufficient if the drive force of the left/right actuator 61 and the front/rear actuator 62 that move the handle post 43 can be locked (not reverse-driven) when not driven, even if only slightly. This allows the actuator drive units 61b, 62b to be implemented using motors with small output.

As described above, in this embodiment, the joystick 67 attached near the left brake lever 69 is used as the switch means. When the joystick 67 is configured as the switch means, the handle post 43 can be stopped in a state where it has moved a predetermined amount forward/backward or left/right when the joystick 67 is moved forward/backward or left/right when the joystick 67 is moved diagonally.

In this way, by operating the joystick 67, the handle post 43 can be stopped after moving a predetermined amount in the forward/backward or left/right direction. As a result, the rider D, who is standing and gripping the handle bar 44 with his/her feet on the step portion 30a, stands on the step portion 30a with his/her body aligned with the axis of gravity. This allows the rider D to maintain balance regardless of the inclination of the vehicle body 1. In addition, the handle post 43 can be moved and stopped without stopping the off-road vehicle 100 by operating the joystick 67. This allows continuous driving, such as driving on flat ground, climbing uphill, descending downhill, and traversing a slope. In addition, the rider can take an appropriate riding posture in any driving condition.

As shown in Figures 4 and 5, the vehicle body frame 10 has a battery mounting section 80 on which a battery (not shown) that supplies power to each electric motor 21 is mounted. The battery mounting section 80 is provided at a midpoint between the left crawler 2a and the right crawler 2b on the vehicle body frame 10.

This allows the relatively heavy battery to be mounted midway between the left crawler 2a and the right crawler 2b on the vehicle frame 10, that is, in the left-right center of the rough terrain vehicle 100. As a result, the left-right balance of the rough terrain vehicle 100 can be improved, and the stability of the vehicle body 1 can be improved.

As shown in FIG. 1, a control device 63 that controls the operation of each electric motor 21, the left and right actuators 61, and the front and rear actuators 62 is disposed at the rear end of the battery mounting section 80. The control device 63 is composed of an electronic control unit equipped with a microprocessor and a memory that stores various control programs. The control device 63 is provided at the left and right center position of the vehicle body frame 10 together with the battery mounting section 80 and the battery. The battery and control device 63 are covered by the base portion 30b of the floor panel 30 located above them.

As shown in FIG. 3, the handlebar 44 is equipped with a display device 65 that displays the remaining battery power, a joystick 66 as an operating unit that commands the operation of the crawler, a joystick 67 as a switch means that issues commands to move the handle post 43 forward/backward or left/right, and left and right brake levers 69, 69.

The joystick 66 that commands the steering operation and the joystick 67 that commands the movement control of the handle post 43 are each connected to the control device 63 via a communication cable (not shown).

The control device 63 controls the rotation direction and rotation speed of each electric motor 21 in response to an operation command based on the operation of the joystick 66, thereby performing vehicle speed control, forward/reverse switching control, steering control, and the like of the off-road vehicle 100. Furthermore, the control device 63 controls the operation of the left/right actuator 61 and the front/rear actuator 62 based on an operation command from the joystick 67, and moves the handle post 43 in the front/rear or left/right or front/rear/left/right directions.

The left and right brake levers 69, 69 are connected to the left and right disc brakes via cables (not shown), and when the occupant D grasps the left and right brake levers 69, 69, the disc brakes are activated and the off-road vehicle 100 is braked.

As shown in Figures 1 to 7, each crawler belt 27 is formed into an endless shape with a predetermined circumference by connecting a predetermined number of belt components 27a with a predetermined number of connecting pins 27b. Five protrusions for preventing slipping are formed on the ground contact side of each belt component 27a. This improves the traversal ability of each crawler 2 on steep forested areas and soft, uneven ground.

Next, the traveling state of the off-road vehicle 100 according to one embodiment of the present invention and the posture of the handle post 43 and the occupant D will be described with reference to Figures 11 to 18. Note that in Figures 11 to 18, the display device 65 provided on the handle bar portion for displaying the remaining battery level, the joystick 66 as an operating unit for instructing the crawler operation, and the joystick 67 as a switch means for instructing the movement of the handle post 43 are not shown.

Figures 11 to 13 show an off-road vehicle 100 according to one embodiment of the present invention traveling on flat ground, with Figure 11 being a perspective view, Figure 12 being a side view, and Figure 13 being a front view.

As shown in Figures 11 to 13, rider D places his/her feet on the step section 30a and grips the grip of the handlebar 44 with both hands while standing. When riding on flat ground, the handlebar post 43 is perpendicular to the vehicle body 1 and aligned with the axis of gravity. Rider D places the joystick 67 in a neutral position. When the joystick 67 is in a neutral position, the handlebar post 43 remains perpendicular to the vehicle body 1. Since the left/right actuators 61 and the front/rear actuators 62 as the handlebar post movement control means 60 are not driven, the handlebar post 43 remains fixed in an upright position, and by gripping the handlebar 44, rider D can maintain a riding position aligned with the axis of gravity, allowing riding on flat ground while maintaining balance.

Next, we will explain the uphill travel of the off-road vehicle 100 according to one embodiment of the present invention. Figure 14 is a side view showing the uphill travel of the off-road vehicle 100 according to one embodiment of the present invention.

When transitioning from flat ground travel or downhill travel to uphill travel, rider D moves the joystick 67 forward, drives the front-rear actuator 62, and tilts the handle post 43 forward. Rider D moves the handle post 43 forward and drives the front-rear actuator 62 until the handle post 43 is aligned with the axis of gravity. When the handle post 43 is aligned with the axis of gravity, rider D releases his finger from the joystick 67. Releasing his finger from the joystick 67 stops the drive of the front-rear actuator 62.

Since the left/right actuator 61 and the front/rear actuator 62 serving as the handle post movement control means 60 are deactivated, the handle post 43 is fixed in a state aligned with the center of gravity axis, and the rider D can maintain a riding posture aligned with the gravity axis by gripping the handle bar 44 when traveling uphill. As a result, the rider D is guided to an appropriate posture according to the inclination of the slope S by gripping the handle bar 44, and can travel uphill while maintaining balance.

Next, we will explain how the off-road vehicle 100 according to one embodiment of the present invention travels downhill. Figure 15 is a side view showing the off-road vehicle 100 according to one embodiment of the present invention traveling downhill.

When transitioning from flat ground travel or uphill travel to downhill travel, rider D moves the joystick 67 rearward, drives the front-rear actuator 62, and tilts the handle post 43 rearward. Rider D drives the front-rear actuator 62 until the handle post 43 is aligned with the axis of gravity. When the handle post 43 moves rearward and is aligned with the axis of gravity due to the drive of the front-rear actuator 62, rider D releases his finger from the joystick 67. Releasing his finger from the joystick 67 stops the drive of the front-rear actuator 62.

The left and right actuators 61 and the front and rear actuators 62 serving as the handle post movement control means 60 are deactivated, so the handle post 43 is fixed in a state aligned with the center of gravity axis, and by gripping the handle bar 44 when traveling downhill, the rider D can maintain a riding position aligned with the axis of gravity, allowing the rider to travel downhill while maintaining balance.

Next, a description will be given of the state in which the off-road vehicle 100 according to one embodiment of the present invention travels traversely on a slope. FIG. 16 is a side view showing the state in which the off-road vehicle 100 according to one embodiment of the present invention travels traversely on a slope.

When transitioning from flat ground travel, uphill travel, or downhill travel to lateral travel on a slope, rider D moves the joystick 67 sideways, or to the left in the state shown in FIG. 16, to drive the left and right actuators 61 and tilt the handle post 43 to the left. Rider D drives the left and right actuators 61 until the handle post 43 is aligned with the axis of gravity. When the handle post 43 is aligned with the axis of gravity, rider D releases his finger from the joystick 67. Releasing his finger from the joystick 67 stops the drive of the left and right actuators 61.

The left and right actuators 61 and the front and rear actuators 62 serving as the handle post movement control means 60 are deactivated, so the handle post 43 is fixed in a state aligned with the center of gravity axis, and by gripping the handle bar 44, the rider D can maintain a riding position aligned with the gravity axis when traversing a slope S, and can traverse the slope S while maintaining balance.

Next, a description will be given of the traveling of the off-road vehicle 100 according to one embodiment of the present invention, as it ascends a slope S in an oblique direction. FIG. 17 is a perspective view showing the traveling of the off-road vehicle 100 according to one embodiment of the present invention, as it ascends a slope S in an oblique direction.

When transitioning from flat ground travel or uphill or downhill travel to travel diagonally up a slope, rider D moves the joystick 67 diagonally forward, driving the left/right actuator 61 and the front/rear actuator 62 to tilt the handle post 43 diagonally forward. Rider D drives the left/right actuator 61 and the front/rear actuator 62 until the handle post 43 is aligned with the axis of gravity. When the handle post 43 has moved diagonally forward and is aligned with the axis of gravity, rider D releases his finger from the joystick 67. Releasing his finger from the joystick 67 stops the drive of the left/right actuator 61 and the front/rear actuator 62.

The left and right actuators 61 and the front and rear actuators 62 serving as the handle post movement control means 60 are deactivated, so the handle post 43 is fixed in a state aligned with the axis of gravity, and by gripping the handle bar 44, the rider D can maintain a riding position aligned with the axis of gravity when climbing an incline at an angle, allowing the rider to ride in a balanced state.

As mentioned above, when a person stands on a slope, they balance their body along the axis of gravity. A passenger in an off-road vehicle 100 attempts to maintain a posture that aligns their body balance with the axis of gravity, regardless of the inclination of the vehicle body.

As described above, in the off-road vehicle 100 of this embodiment, the rider D can use the joystick 67 to move the handle post 43 in the desired direction, thereby keeping the handle post 43 aligned with the axis of gravity. This allows the rider D to maintain balance even when the vehicle body 1 is tilted forward, backward, left, or right.

The angle of the handle post 43 does not need to be perfectly aligned with the axis of gravity, and rider D can simply release his/her fingers from the joystick 67 when he/she is confident that he/she can maintain balance. Therefore, the angle of the handle post 43 relative to the vehicle body 1 can be stopped at an angle that rider D prefers.

Figure 18 is a front view of an off-road vehicle 100 according to a second embodiment of the present invention. Note that the same parts as those in the first embodiment are given the same reference numerals and will not be described.

In this second embodiment, an inclination sensor 91 is provided on the handle post 43. Also, an inclination sensor 92 is provided on the vehicle body 1. The outputs of these inclination sensors 91 and 92 are provided to the control device 63.

The control device 63 determines the driving state of the off-road vehicle 100 from the inclination of the vehicle body 1 using an inclination sensor 92 provided on the vehicle body 1. The control device 63 determines whether the driving state is flat ground driving, climbing, descending a slope, traversing a slope, etc., calculates the front-rear and left-right angles of the handle post 43 according to the state, controls the drive of the left-right actuator 61 and the front-rear actuator 62 according to the calculated angles, moves the angle of the handle post 43 to a specified angle, and then stops the drive of the left-right actuator 61 and the front-rear actuator 62. The handle post 43 is maintained at the specified angle.

This configuration allows the rider D to ride at the optimal handlebar 44 position without operating the joystick 67.

Furthermore, the control device 63 may be configured to control the driving of the left/right actuator 61 and the front/rear actuator 62 so as to maintain the handle post 43 in a state where it overshoots the direction of gravity P by a predetermined angle (α) toward the mountain side.

By maintaining the handlebar post 46 in a state where it overshoots the direction of gravity by a certain angle toward the mountain, it creates room for maneuvering. This makes it easier for the occupant D to drive. The handlebars are fixed vertically, so there are no problems with balance. However, when standing on a slope, people feel fear when leaning toward the valley. The inventor has discovered that leaning toward the mountain creates a sense of security. Therefore, by tilting the handlebar post 43 toward the mountain rather than vertically, the sense of stability and security of the occupant D when driving on a slope is increased, and room for maneuvering is created. In this embodiment, the handlebar post 43 is overshooting the mountain by an angle of, for example, 15 degrees, to create a sense of security and room for maneuvering.

The offset angle is calculated by the control device 63 based on the inclination angle of the slope S, and the control device 63 controls the drive of the left/right actuator 61 and the front/rear actuator 62 according to the output of the inclination sensor 91 provided on the handle post 43 so that the angle corresponds to the calculated angle.

When the handle post 43 is automatically controlled to a position along the gravity axis, an inclination sensor 91 can be provided on the handle post 43, and the inclination sensor 92 on the vehicle body 1 can be omitted.

Next, a third embodiment of the present invention will be described with reference to Figures 19 to 21. Figure 19 is an enlarged perspective view showing a handlebar portion of an all-terrain vehicle according to a third embodiment of the present invention, Figure 20 is a top view of the all-terrain vehicle according to the third embodiment of the present invention, and Figure 21 is a front view of the all-terrain vehicle according to the third embodiment of the present invention. Note that the same parts as in the first embodiment are given the same reference numerals and their description will be omitted.

In the above-described embodiment, the left crawler 2a and the right crawler 2b are commanded to drive by operating the joystick 66. In contrast, in the third embodiment, instead of the joystick 66, a left switch 66L and a right switch 66R are provided near the left and right grips of the handlebar 44.

The left switch 66L and the right switch 66R each have a lever 66LD, 66RD that can move forward and backward. The left switch 66L and the right switch 66R control the drive of the left crawler 2a and the right crawler 2b.

Occupant D grasps the left and right grips of the handlebar 44 with his/her right and left hands, respectively, and operates the lever 66LD of the left switch 66L with the index finger or thumb of his/her left hand. Similarly, he/she operates the lever 66RD of the right switch 66R with the index finger or thumb of his/her right hand.

When the lever 66LD of the left switch 66L is pulled back with a finger, the electric motor 21 rotates so that the left crawler 2a moves forward. When the lever 66LD of the left switch 66L is pushed forward with a finger, the electric motor 21 rotates so that the left crawler 2a moves backward.

Similarly, when the lever 66RD of the right switch 66R is pulled back with a finger, the electric motor 21 rotates so that the right crawler 2b moves forward. When the lever 66RD of the right switch 66R is pushed forward with a finger, the electric motor 21 rotates so that the right crawler 2b moves backward.

The rotation speed of each electric motor 21 that drives the left crawler 2a and the right crawler 2b is controlled by the amount that the levers 66LD, 66RD are pulled in or pushed out. By adjusting the amount that the levers 66LD, 66RD are pulled in or pushed out with a finger, the running speed, forward, reverse, left turn, right turn, etc. of the rough terrain vehicle 100 are controlled.

When the levers 66LD and 66RD are released, the electric motor 21 stops, and the left crawler 2a and right crawler 2b stop rotating. In other words, if the levers 66LD and 66RD are not pushed forward or pulled backward, the left crawler 2a and right crawler 2b stop and remain in the same state as when the brakes are applied. For this reason, in this third embodiment, there are no disc brakes or brake levers for operating the disc brakes.

The joystick 67a, which controls the drive of the left-right actuator 61 and the front-rear actuator 62 for moving the handle post 43 forward, backward, left and right, is provided above the right switch 66R.

Using the joystick 67a, the occupant D controls the movement of the handle post 43.

By operating the lever 66LD of the left switch 66L, the lever 666RD of the right switch 66R, and the joystick 67a, the off-road vehicle 100 can be continuously driven on flat ground, uphill, downhill, and across slopes without stopping. In addition, the driver can take an appropriate riding position in any driving condition.

[Another embodiment]
Another embodiment of the present invention will now be described.
The configurations of the respective alternative embodiments described below are not limited to being applied alone, but may also be applied in combination with the configurations of other alternative embodiments.

The above-mentioned off-road vehicle 100 has a seat 8 in the passenger section 3, but it may be configured for standing use only, without a seat 8.

A bogie may also be attached to the off-road vehicle 100.

In the above embodiment, the handle post 43 is supported by the support part 50 so that it can move freely in all directions relative to the vehicle body 1, but the handle post 43 may be supported so that it can move only forward and backward or only left and right relative to the vehicle body 1. If it moves only forward and backward, the optimal riding position can be easily adopted when traveling uphill or downhill, and if it moves only left and right, the optimal riding position can be easily adopted when traveling lateral on a slope.

In the above embodiment, the handle post movement control means 60 is composed of a load resistance component when the left-right actuator 61 and the front-rear actuator 62, which electrically move the handle post 43 in the front-rear or left-right or front-rear or left-right directions, are stopped, but the handle post movement control means 60 is not limited to electrical means. For example, the handle post movement control means 60, which mechanically controls the movement of the handle post, can be composed of a freely expandable and contractible member attached between the handle post and the vehicle frame, and a brake that stops the expansion and contraction of the expandable member that expands and contracts due to the movement of the handle post in the front-rear or left-right or front-rear or left-right directions.

In the third embodiment described above, a left switch 66L and a right switch 66R are provided near the left and right grips of the handlebar 44, and the left switch 66L controls the drive of the left crawler 2a and the right switch 66R controls the drive of the right crawler 2b. The left switch 66L and the right switch 66R can also be used to perform drive control of the rough terrain vehicle 100 different from that of the third embodiment. For example, the right switch 66R can be used as an accelerator switch and the left switch 66L can be used as a steering switch.

When the right switch 66R is used as an access switch, for example, pulling the lever 66RD back with a finger causes the electric motor 21 to rotate in the forward direction, and the left crawler 2a and right crawler 2b are driven at a constant speed in the forward direction, causing the vehicle to move straight forward. When the lever 66RD is pushed forward with a finger, the electric motor 21 rotates in the reverse direction, and the left crawler 2a and right crawler 2b are driven at a constant speed in the reverse direction, causing the vehicle to move straight backward.

The rotational speed of each electric motor 21 that drives the left crawler 2a and the right crawler 2b is controlled by the amount that the lever 66RD is pulled in or pushed out. The traveling speed, forward and reverse of the rough terrain vehicle 100 are controlled by adjusting the amount that the lever 66RD is pulled in or pushed out with a finger.

When the left switch 66L is used as a steering switch, for example, by pulling the lever 66LD backward or pushing it forward with a finger, the left crawler 2a and the right crawler 2b of the rough terrain vehicle 100 are driven at unequal speeds in the forward rotation direction. For example, by pulling the lever 66LD backward with a finger, the left crawler 2a rotates faster than the right crawler 2b, and the rough terrain vehicle 100 turns left. Conversely, by pushing the lever 66LD forward with a finger, the right crawler 2b rotates faster than the left crawler 2a, and the rough terrain vehicle 100 turns right. The speed difference between the left crawler 2a and the right crawler 2b is controlled by the amount by which the lever 66LD is pulled in or pushed out. The turning angle of the rough terrain vehicle 100 can be controlled by adjusting the amount by which the lever 66LD is pulled in or pushed out with a finger.

When the levers 66LD and 66RD are released, the electric motor 21 stops, and the left crawler 2a and right crawler 2b stop rotating.

1: Vehicle body 2a: Left crawler 2b: Right crawler 3: Riding section 4: Handle section 5a: Support shaft 5b: Support shaft 10: Vehicle body frame 15: Handle support base 17: Left/right swing link 18a: Crawler support section 18b: Crawler support section 20: Crawler frame 21: Electric motor 22: Drive sprocket 23: Idle wheel 43: Handle post 44: Handle bar 50: Support section 50a: First support section 50b: Second support section 60: Handle post movement control means 61: Left/right actuator 62: Front/rear actuator 63: Control device 66: Joystick 66L: Left switch 66LD: Lever 66R: Right switch 66RD: Lever 67: Joystick 67a: Joystick

Claims (4)

a vehicle body frame; left and right crawlers connected to the vehicle body frame; a riding section supported by the vehicle body frame and capable of being ridden by a user; a handle post extending upward from the vehicle body frame; and a handle bar provided on an upper portion of the handle post;
a support portion that is attached to the body frame and supports the handle post so as to be movable in front-rear and left-right directions relative to the body frame;
and a handle post movement control means for controlling the movement of the handle post .
The handle post movement control means includes an actuator unit that moves the handle post in forward/backward and left/right directions ,
the support portion has a universal joint which can rotate and tilt in all directions and supports the handle post so as to be movable in all directions;
the actuator unit includes a front-rear actuator that moves the handle post in a front-rear direction, a left-right actuator that moves the handle post in a left-right direction, and a control device that controls driving of the front-rear actuator and the left-right actuator ,
a switch means provided on the handlebar for giving an instruction signal to the control device, the control device controlling the drive of the front and rear actuators and the left and right actuators in response to an instruction input by the switch means . The switch means comprises a joystick,
When the joystick is moved in the front-rear direction of the vehicle, the control device controls the drive of the front-rear actuator to move the handle post in the front-rear direction,
When the joystick is moved in the left-right direction of the vehicle, the control device controls the driving of the left-right actuators to move the handle post in the left-right direction.
2. An off-road vehicle according to claim 1 . A tilt sensor is provided on the handle post,
The control device controls the driving of the front-rear actuator and the left-right actuator so that the handle post is aligned with the direction of gravity.
2. An off-road vehicle according to claim 1 . the control device controls the driving of the front-rear actuator and the left-right actuator so as to maintain the handle post in a state where it overshoots the gravity direction by a predetermined angle toward the mountain side.
4. An off-road vehicle according to claim 3 .

Images