JP2006224720A - Irregular ground traveling vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an irregular ground traveling vehicle which can arbitrarily stop the power supply to an electric power steering device by an occupant, and is designed in the consideration of protection of the related apparatus and operationality. <P>SOLUTION: The irregular ground traveling vehicle 10 is equipped with the electric power steering device driven by the power of a battery, an occupant seat 44 which is openable and closable by a lever 167 at the rear part of a bar handle steering the front wheels, and a manual switch 166 which stops the power supply to the electric power steering device, in detail, an electric motor for a power assist under the seat 44. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an uneven terrain vehicle including an electric power steering device.

As a traveling means including a conventional electric power steering device, a riding type rice transplanter as a working machine provided with a steering device for steering a front wheel is known (for example, see Patent Document 1).
JP-A-8-336237

  In FIG. 1 to FIG. 3 of Patent Document 1, an electric power steering device 12 for assisting the steering of the pair of left and right front wheels 1 and 1 is provided in the rice transplanter, and the terminal voltage of the battery 23 mounted on the rice transplanter is set to the voltage. In order from the highest, A stage (13V or more), B stage (12V or more and less than 13V), C stage (11.5V or more and less than 12V) and D stage (less than 11.5V) are displayed on the display means. When the terminal voltage of the battery 23 drops to the C level, the control device 17 stops the power supply to the electric motor 16 provided in the electric power steering device 12 so that the electric motor 16 is not driven and a warning is issued. It is described.

  In the above, since the control device 17 automatically controls the power supply to the electric motor 16 in accordance with the terminal voltage of the battery 23, the amount of travel in the future and the state of the paddy field while the rice transplanter is traveling For example, when the driver wants to stop the power supply to the electric motor 16 even in the B stage in order to predict the frequency of power assist by the electric steering device 12 from the above and suppress the decrease in the terminal voltage of the battery 23. In the rice transplanter, it is difficult not to drive the electric motor 16 at the discretion of the driver.

  In addition, since the rice transplanter is easily covered with muddy water, it is desirable that the devices such as the control device 17 are protected by a cover or the like. It is desirable not to damage it.

  An object of the present invention is to provide a rough terrain vehicle that allows an occupant to arbitrarily stop power supply to an electric power steering apparatus and considers protection and operability of equipment related thereto.

  The invention according to claim 1 is an uneven terrain vehicle including an electric power steering device driven by electric power of a battery, and includes an occupant seat that can be opened and closed by a lever behind a steering wheel for steering the wheel. A manual switch for stopping power supply to the electric power steering apparatus is provided below.

  For example, in order to suppress a decrease in battery terminal voltage, the occupant stops the power supply to the electric power steering device by operating a manual switch provided under the seat by opening the seat with a lever.

The invention according to claim 2 is characterized in that a battery for supplying electric power to the electric power steering apparatus is disposed below the seat.
When the battery is maintained by opening the seat, a manual switch provided under the seat can be operated.

  According to a third aspect of the present invention, there is provided a rough terrain vehicle including an electric power steering device driven by battery power. The rough terrain vehicle includes a recoil starter operator for starting an engine inside a vehicle body cover. A manual switch for stopping power supply to the electric power steering device is provided inside the vehicle body cover and in the vicinity of the recoil starter operator.

  For example, in order to suppress a decrease in battery terminal voltage, the occupant opens the vehicle body cover and operates a manual switch in the vicinity of the recoil starter operator for starting the engine provided inside the vehicle body cover. The power supply to the power steering device is stopped.

  In the invention according to claim 1, since the manual switch for stopping the power supply to the electric power steering device is provided under the passenger seat, the passenger can arbitrarily stop the electric power steering device with the manual switch. In addition, the manual switch can be protected by the seat. Furthermore, for example, if a manual switch is provided in the vicinity of a lever that is used to open the sheet, the manual switch can be operated with the other hand while the sheet is half-opened by placing one hand on the lever. And operability can be improved.

  In the invention according to claim 2, since the battery is disposed below the seat, when the battery is maintained by opening the seat, the manual switch under the seat can be operated by a series of operations of the battery maintenance, The operability of the manual switch by the passenger can be improved.

  In the invention according to claim 3, the rough terrain vehicle is provided with a manual switch for stopping power supply to the electric power steering device inside the vehicle body cover and in the vicinity of the recoil starter operation element. The power steering device can be stopped by a manual switch, and the manual switch can be protected by a vehicle body cover.

  Furthermore, when the battery terminal voltage becomes low and the recoil starter operator is operated, the operation of operating the manual switch to stop the power supply and the operation of operating the recoil starter operator can be performed almost simultaneously. The operability can be improved and the usability of the rough terrain vehicle can be improved.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a side view of a rough terrain vehicle according to the present invention. The rough terrain vehicle 10 includes front wheels 12 and 13 (only reference numeral 12 on the front side) via a suspension arm (not shown) at the front of a body frame 11. The rear wheels 14 and 15 (only the reference numeral 14 on the front side are shown) are attached to the rear portion of the vehicle body frame 11 via suspension arms (not shown), and the engine 17 and the transmission are installed at the center of the vehicle body frame 11. An electric power steering apparatus including a power assist unit (not shown) for attaching a power unit 21 comprising 18 and driving the front wheels 12 and 13 and the rear wheels 14 and 15 with the power unit 21 to reduce the steering force of the front wheels 12 and 13, respectively. And a manual switch 166 capable of stopping power supply to the electric power steering device 22. A.
The input shaft 24 that constitutes the electric power steering device 22 is a member that is rotated by an operation of a bar handle 25 attached to the upper portion of the input shaft 24.

Here, 26 is an exhaust pipe extending rearward from the front of the engine 17, 27 is a silencer connected to the rear end of the exhaust pipe 26, 31 is a carburetor connected to the rear of the engine 17 via an intake pipe 32, 33 Is an air cleaner connected to the carburetor 31 through a connecting tube 34, 36 is a front carrier, 37 is a headlamp, 38 is a radiator, 41 is a front fender, 43 is a fuel tank, 44 is a simple operation, for example, exposed from the vehicle body A seat that can be opened and closed by operating a lever (details will be described later), 46 is a rear carrier, 47 is a rear fender, and 48 is a step floor.
The electric power steering device 22 is supplied with electric power from a battery 49 disposed below the rear portion of the seat 44.

  The vehicle body frame 11 includes a pair of left and right upper main frames 55 and 56 (only the front side reference numeral 55 is shown) extending in the front-rear direction, and is disposed below these upper main frames 55 and 56 and the upper main frames 55 and 56. A pair of left and right lower main frames 57 and 58 (only front side 57 is shown) connected to the front end and rear end of the upper and lower front frames 55 and 56 for supporting an intermediate portion of the input shaft 24. A pair of left and right L-shaped frames 62 and 62 (only the reference numeral 62 on the near side is shown) and a pair of left and right standing frames 63 and 63 (only the reference numeral 63 on the near side is shown) and a front carrier. 36, a pair of left and right front frames 64, 64 (only the reference numeral 64 on the front side is shown) is provided.

  The vehicle body frame 11 is attached to the front inclined portions 66 and 66 (only the reference numeral 66 on the front side) provided at the front portions of the upper main frames 55 and 56 and the lower main frames 57 and 58, respectively. A pair of left and right inclined frames 67, 67 (only the reference numeral 67 on the front side is shown) and the lower frames of the electric power steering device 22 are mounted by being attached to the inclined frames 67, 67 and the front inclined portions 66, 66, respectively. A pair of left and right sub-inclined frames 68 and 68 (only the front side reference numeral 68 is shown), a pair of left and right attached to the rear ends of the upper main frames 55 and 56 and the rear portions of the lower main frames 57 and 58, respectively. In order to support the curved frames 71, 71 (only the reference numeral 71 on the front side is shown) and the front portion of the rear carrier 46, the upper main frame 55 is supported. 56, a pair of left and right rear first frames 72, 72 (only front side 72 is shown) and left and right attached to the curved frames 71, 71 to support the rear part of the rear carrier 46. A pair of rear second frames 73 and 73 (only the front side reference numeral 73 is shown) are provided.

  FIG. 2 is a plan view of the rough terrain vehicle according to the present invention. The rough terrain vehicle 10 includes an output shaft 81 disposed below the input shaft 24 at the front, and the rotation of the bar handle 25 to the front wheels 12. 13, a center arm 82 attached to the lower end of an output shaft 81 (details will be described later), one end connected to the center arm 82 via ball joints 83 and 83, and the other end Telescopic tie rods 88 and 89 connected to the knuckles 85 and 86 on the front wheels 12 and 13 side via ball joints 87 and 87, and these output shaft 81, center arm 82, ball joints 83 and 83, tie rod 88. , 89 and ball joints 87, 87 are connected to the electric power steering device 22. It is intended to be included.

  Here, 93 is a steering holder base that is passed between the L-shaped frames 62 and 62 to rotatably support the input shaft 24, 94 is a clutch lever, 95 is a brake lever for front wheels, 96 and 96 are footrests, and 97 is A gear change pedal 98 is a rear wheel brake pedal.

  FIG. 3 is a side view of the main part showing the front part of the rough terrain vehicle according to the present invention (the arrow (FRONT in the figure indicates the front of the vehicle; the same applies hereinafter)), and the electric power steering device 22 has the front wheels. A steering device 105 for steering, a torque sensor unit 106 for detecting steering torque, a power assist unit 107 for generating power for assisting steering force, and a power assist based on the steering torque detected by the torque sensor unit 106 The control unit 110 controls the unit 107.

  The steering device 105 includes a bar handle 25 (see FIG. 1), an input shaft 24, an output shaft 81 connected to the input shaft 24 via a torque sensor unit 106, and a center attached to the lower end of the output shaft 81. It consists of an arm 82, ball joints 83 and 83 (only the reference numeral 83 on the near side is shown), tie rods 88 and 89 (see FIG. 2), and ball joints 87 and 87 (see FIG. 2).

The input shaft 24 below the bar handle 25 is rotatably supported by the input shaft bearing portion 91.
The input shaft bearing portion 91 includes a steering holder base portion 93 passed to the left and right L-shaped frames 62 and 62 (only the reference numeral 62 on the near side is shown) and a holder piece 108 attached to the steering holder base portion 93 is a bush (not shown). It is a portion configured by being fastened via Reference numerals 111 and 112 denote bolts and nuts for attaching the holder piece 108 to the steering holder base 93, and a pair of left and right parts are provided.

The L-shaped frames 62 and 62 are members connected by a cross pipe 114, and the cross pipe 114 is a locking member provided with an upper protruding piece 115 substantially parallel to the input shaft 24.
The upward projecting piece 115 is a member that functions as a stopper that restricts the swing range of the arm piece 116 attached to the input shaft 24, that is, a stopper that restricts the rotation angle range of the input shaft 24.

The input shaft 24 and the output shaft 81 are members constituting the steering shaft 118.
The output shaft 81 is rotatably supported by an output shaft bearing portion 120 provided below a sensor housing 119 provided in the torque sensor portion 106.
The output shaft bearing portion 120 is supported by the bottom plate 121 attached to the left and right sub-inclined frames 68 and 68 (only the front side reference numeral 68 is shown), and the speed reducer 126 provided in the power assist portion 107 is also the bottom plate 121. Supported by Reference numeral 127 denotes a bolt (one of which is provided) for attaching the speed reducer 126 to the bottom plate 121.

  The torque sensor unit 106 is provided with a torsion bar 123 between the input shaft 24 side and the output shaft 81 side. When the input shaft 24 is rotated by operating the bar handle 25 (see FIG. 2), a relative rotation angle is generated between the input shaft 24 and the output shaft 81, and the torsion bar 123 is twisted. The steering torque is obtained by converting the amount of twist into torque.

  The power assist unit 107 includes an electric motor 125 and a clutch (not shown) and a reduction gear 126 interposed between the output shaft of the electric motor 125 and an intermediate portion of the output shaft 81. It consists of a worm gear and a worm wheel.

  The control unit 110 determines the steering torque detected by the torque sensor unit 106, the steering angle of the bar handle 25 (see FIG. 1), the vehicle speed of the rough terrain vehicle 10 (see FIG. 1), and the like based on process data during vehicle travel. The power assist unit 107 is controlled. Reference numeral 128 denotes a bracket attached to the L-shaped frame 62 in order to support the control unit 110.

  FIG. 4 is a cross-sectional view of the output shaft lower end support portion according to the present invention. The output shaft bearing portion 120 is configured to rotatably support the shaft support member 132 attached to the center portion of the bottom plate 121 and the output shaft 81. And a bearing 133 attached to the shaft support member 132 and seal members 134 and 135 for protecting the bearing 133 from dust and the like. Reference numeral 137 denotes a retaining ring for preventing the bearing 133 from coming off from the shaft support member 132, and 138 is a collar.

The shaft support member 132 is formed with a downward projecting portion 132a projecting downward substantially along the output shaft 81 on the front side of the vehicle.
The center arm 82 is a member in which a female spline 82 a is formed, and this female spline 82 a is spline-coupled with a male spline 81 a formed at the lower end portion of the output shaft 81.
The ball joint 83 is a member in which a bolt portion 83 a provided at an end portion is attached to the rear portion of the center arm 82 with a nut 141.

  5 is a cross-sectional view taken along line 5-5 of FIG. 4. The center arm 82 has ball joints respectively connected to side protrusions 82b and 82c provided on the left and right sides of the female spline 82a and tie rods 88 and 89, respectively. The tie rod coupling parts 82d and 82e coupled via 83 and 83 are integrally molded members.

When the center arm 82 rotates with the rotation of the output shaft 81, the lateral protrusions 82b and 82c abut on the downward protrusion 132a of the shaft support member 132 (see FIG. 4) and the rotation range is restricted. The position of the center arm 82 shown in the figure is that when the bar handle 25 (see FIG. 2) is at the straight traveling position of the vehicle, and θ1 is clockwise and counterclockwise of the center arm 82 from the straight traveling position of the vehicle. This is a rotation angle range of the rotation, and a rotation angle range of the output shaft 81.
The side protrusions 82b and 82c and the downward protrusion 132a described above are parts constituting the output shaft stopper mechanism 143.

  6 is a cross-sectional view taken along line 6-6 of FIG. 3, and the side protrusions 116a and 116b of the arm piece 116 are arranged on the cross pipe 114 side when the arm piece 116 swings as the input shaft 24 rotates. The swinging range is restricted by hitting the upper protruding piece 115 of the upper part. The position of the arm piece 116 shown in the figure is the position when the bar handle 25 (see FIG. 2) is at the straight traveling position of the vehicle, and θ2 is the clockwise and counterclockwise rotation of the arm piece 116 from the straight traveling position of the vehicle. This is a rotation angle range around and a rotation angle range of the input shaft 24. The side protrusions 116 a and 116 b and the upper protrusion 115 described above are parts constituting the input shaft stopper mechanism 145.

7 (a) and 7 (b) are side views showing the main part of another embodiment of the input shaft stopper mechanism according to the present invention. The same components as those in the embodiment shown in FIG. 3 and FIG. Detailed description is omitted.
(A) The lower protruding piece 151 is provided on the cross pipe 114, and the arm piece 116 is attached below the holder piece 108 of the input shaft 24, whereby the swinging range of the arm piece 116 is regulated by the lower protruding piece 151. The structure is shown.

  The side protrusions 116 a and 116 b of the arm piece 116 (only the front side reference numeral 116 a is shown) and the downward protrusion piece 151 are parts constituting the input shaft stopper mechanism 153.

FIG. 7B shows a structure in which an upper protruding piece 155 is provided on the upper portion of the steering holder base 93 and the swing range of the arm piece 116 is regulated by the upper protruding piece 155.
The side protrusions 116a and 116b (only the reference numeral 116a on the front side) of the arm piece 116 and the upper protrusion piece 155 are parts constituting the input shaft stopper mechanism 156. In addition, a bracket (not shown) may be provided in front of the input shaft 24 of the L-shaped frame 62, a protruding piece may be provided on the bracket, and the protruding piece and the arm piece 116 may constitute an input shaft stopper mechanism. .

  FIG. 8 is a perspective view showing the right side surface of the rough terrain vehicle according to the present invention. Between the front fender 41 and the rear fender 47 and below the side portion of the seat 44, an opening 161 is provided for maintenance. This shows that a detachable vehicle body side cover 162 that forms the rear end of the opening 161 is provided.

  FIG. 9 is a perspective view of a main part showing the arrangement of a manual switch for stopping power supply to the electric motor of the electric power steering apparatus according to the present invention, and shows a state where the seat 44 of the rough terrain vehicle 10 is removed. In FIG. 9, the electric power steering device 22 (see FIG. 3) is attached to a cross pipe 165 attached to the left and right upper main frames 55 and 56 of the vehicle body frame 11 below the seat 44 when the seat 44 is mounted. The manual switch 166 (here, the manual switch 166 is indicated by a black circle) capable of stopping the power supply from the battery 49 (see FIG. 1) to the electric motor 125 (see FIG. 3) is provided.

  The seat 44 is attached to the vehicle body side by engaging a hook (not shown) provided at the rear of the bottom portion with the hook (not shown) provided at the rear portion of the seat after inserting and locking a protruding portion (not shown) provided at the front portion of the bottom portion to the vehicle body side. Is.

  When opening the seat 44, the hook hooked on the vehicle body side is swung by the operation of a lever 167 provided at the rear portion of the seat 44 to release the hook and the vehicle body side, and the rear portion of the seat 44 is opened. In this state, the protruding portion locked on the vehicle body side is pulled out, and the locking of the front portion of the seat 44 is released. Reference numerals 171 and 172 denote cushion rubbers provided on the vehicle body frame 11 side in order to support the bottom of the rear portion of the seat 44.

  In this way, by arranging the manual switch 166 that can stop the power supply to the electric motor 125 below the seat 44, the occupant (driver or passenger) can arbitrarily turn off the manual switch 166 to The power supply to the motor 125 can be stopped. Further, the manual switch 166 is protected by the seat 44, the manual switch 166 is not exposed to rainwater, mud, and the like, and malfunction due to interference from the outside of the manual switch 166 can be prevented.

  Further, by placing the battery 49 (see FIG. 1) at a position where the seat 44 is opened to perform maintenance work (see also FIG. 2), for example, when the battery 49 is maintained by charging or the like, it is manually operated in a series of operations. The switch 166 can be operated, and the operability by the passenger can be improved.

  As shown in FIGS. 1, 8, and 9, the present invention relates to the front wheels 12 and 13 as wheels in the rough terrain vehicle 10 including the electric power steering device 22 driven by the electric power of the battery 49. An occupant seat 44 that can be opened and closed by a lever 167 is provided behind the bar handle 25 that steers the vehicle. Under this seat 44, electric power is supplied to the electric power steering device 22, more specifically, the electric motor 125 (see FIG. 3). A manual switch 166 for stopping the operation is provided.

  More specifically, the manual switch 166 is disposed on the cross pipe 165 that connects the left and right upper main frames 55 and 56, offset from the center of the vehicle body to one side. The manual switch 166 is disposed behind the cylinder portion 17 a provided in the engine 17 and in front of and above the rear fender 47.

  Since the manual switch 166 for stopping the power supply to the electric motor 125 is provided under the occupant seat 44, the occupant can arbitrarily stop the electric motor 125 with the manual switch 166. The manual switch 166 can be protected from rain water, mud, dirt and the like. Further, for example, if the manual switch 166 is provided in the vicinity of the lever 167 to be put on when the seat 44 is opened, the manual switch is operated with the other hand while the seat 44 is half-opened by placing one hand on the lever 167. 166 can be operated, and the operability can be improved.

By disposing the manual switch 166 on one side from the center of the vehicle body, it becomes easier for the occupant to wire the manual switch 166 and to operate the manual switch 166 from the side of the vehicle.
In addition, the manual switch 166 can be prevented from being covered with mud, dust and the like by being disposed forward and above the rear fender 47.

  FIG. 10 is a perspective view showing a main part of another embodiment of the arrangement of the manual switch for stopping the power supply to the electric motor of the electric power steering apparatus according to the present invention, and the vehicle body side cover 162 of the rough terrain vehicle 10 is removed. Shows the state. In FIG. 10, a recoil starter 175 provided at the rear of the engine 17 is provided inside the vehicle body side cover 162 when the vehicle body side cover 162 is attached, in order to start the engine 17 manually, and the recoil starter 175 is wound around the recoil starter 175. An electric motor 125 (see FIG. 3) of the electric power steering device 22 (see FIG. 3) is provided in the vicinity of the knob 176, specifically, a bracket 177 attached to the body frame 11 side. 3) is provided with a manual switch 178 (here, the manual switch 178 is indicated by a black circle) capable of stopping power supply from the battery 49 (see FIG. 1). Reference numerals 181 to 183 denote cover attachment portions provided on the vehicle body frame 11 side in order to detachably attach the vehicle body side cover 162.

When it becomes difficult to start the engine 17 (see FIG. 1) by the cell motor and the occupant (driver or passenger) determines that the terminal voltage of the battery 49 (see FIG. 1) has decreased, the vehicle body side cover 162 First, the manual switch 178 is turned off, and then the knob 176 is grasped and pulled, and the recoil starter 175 is operated to start the engine 17.
As described above, the operation of operating the manual switch 178 and the operation of operating the knob 176 can be performed continuously and with almost no space between them, so that the operability is good and the usability is good.

  As shown in FIGS. 1, 8, and 10, the present invention relates to the rough terrain vehicle 10 including the electric power steering device 22 that is driven by the electric power of the battery 49. Further, a knob 176 as an operator of the engine start recoil starter 175 is provided inside the vehicle body side cover 162, and is located inside the vehicle body side cover 162 and in the vicinity of the knob 176 of the recoil starter 175, that is, from the fuel tank 43. Electric power steering downward, ahead of the rear end of the seat 44, above the step floor 48, on the side of the vehicle, on the side where the knob 176 of the recoil starter 175 is located, and on the vehicle body inside and above the knob 176 A manual switch 178 for stopping the power supply to the device 22, more specifically, the electric motor 125 (see FIG. 3) is provided. And wherein the Rukoto.

  The rough terrain vehicle 10 includes a manual switch 178 for stopping the power supply to the electric motor 125 inside the vehicle body side cover 162 and in the vicinity of the knob 176 of the recoil starter 175. It is possible to stop by the manual switch 178, and the manual switch 178 can be protected by the vehicle body side cover 162.

  Further, when the terminal voltage of the battery 49 is lowered and the knob 176 of the recoil starter 175 is operated, the operation of operating the manual switch 178 to stop the power supply and the operation of operating the knob 176 of the recoil starter 175 are performed. Therefore, the operability can be improved and the usability of the rough terrain vehicle 10 can be improved.

  FIG. 11 is a perspective view showing a main part of another embodiment of the manual switch for stopping the power supply to the electric motor of the electric power steering apparatus according to the present invention. A switch mounting portion 47a is formed in the upper portion of the rear fender 47, and power supply to the electric motor 125 (see FIG. 3) of the power steering device 22 (see FIG. 3) can be stopped via the rubber 185 in the switch mounting portion 47a. The manual switch 186 (here, the manual switch 186 is indicated by a black circle) is provided.

Since the manual switch 186 is provided in the vicinity of the lever 167 for opening and closing the seat 44, the manual switch 186 can be easily operated when the seat 44 is opened, and the manual switch 186 is provided below the seat 44. Since it is arranged, the manual switch 186 can be protected by the seat 44.
Further, the rubber 185 makes it difficult for the manual switch 186 to transmit vibrations of the vehicle body, and the life of the manual switch 186 can be extended.

12A to 12C are perspective views showing examples of the manual switch according to the present invention.
The manual switch 166 (or manual switch 178 (see FIG. 10) and manual switch 186 (see FIG. 11)) in (a) is turned on (OFF) by operating the operation unit 187 with a seesaw. A switchable seesaw switch.

  The manual switch 166 (or the manual switch 178 (see FIG. 10) and the manual switch 186 (see FIG. 11)) of (b) is switched between ON (ON) and OFF (OFF) by sliding the operation unit 188. This is a possible slide switch, or a snap switch that can be switched on (OFF) by turning the operation unit 188 down.

  The manual switch 166 (or manual switch 178 (see FIG. 10) and manual switch 186 (see FIG. 11)) of (c) is turned on (ON) and off (OFF) by rotating the operation unit 189 at a certain angle. ) Can be switched.

  In this embodiment, as shown in FIG. 9, the manual switch 166 is attached to the cross pipe 165, but the present invention is not limited to this, and the vehicle rear side (closer to the lever 167) than the cross pipe 165. ), For example, the vehicle body frame 11 in the vicinity of the cushion rubbers 171 and 172.

  In the present embodiment, as shown in FIGS. 3 and 9 to 11, manual switches 166, 178, and 186 for stopping the power supply to the electric power steering device 22 are provided. The controller 110 that controls the device 22 may detect the start of the engine by the recoil starter 175 and stop the power supply to the electric power steering device 22.

  Furthermore, in this embodiment, as shown in FIG. 3, the input shaft 24 and the output shaft 81 are connected via a torsion bar 123, and the steering torque is obtained based on the torsion amount of the torsion bar 123. However, the present invention is not limited to this, and the steering torque may be obtained based on a detection value of a strain sensor provided between the bar handle 25 and the center arm 82. In this case, the electric power steering device 22 can be further reduced in size.

  The present invention is suitable for rough terrain vehicles equipped with an electric power steering device.

It is a side view of the rough terrain vehicle according to the present invention. It is a top view of the rough terrain vehicle according to the present invention. It is a principal part side view which shows the front part of the rough terrain vehicle which concerns on this invention. It is sectional drawing of the output shaft lower end support part which concerns on this invention. FIG. 5 is a sectional view taken along line 5-5 of FIG. FIG. 6 is a sectional view taken along line 6-6 of FIG. It is a principal part side view which shows another embodiment of the input shaft stopper mechanism in this invention. It is a perspective view which shows the right side surface of the rough terrain vehicle which concerns on this invention. It is a principal part perspective view which shows arrangement | positioning of the manual switch which stops the electric power supply to the electric motor of the electric power steering apparatus which concerns on this invention. It is a principal part perspective view which shows another embodiment of arrangement | positioning of the manual switch which stops the electric power supply to the electric motor of the electric power steering apparatus which concerns on this invention. It is a principal part perspective view which shows further another embodiment of arrangement | positioning of the manual switch which stops the electric power supply to the electric motor of the electric power steering apparatus which concerns on this invention. It is a perspective view which shows the example of the manual switch which concerns on this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Rough terrain vehicle, 12, 13 ... Wheel (front wheel), 17 ... Engine, 22 ... Electric power steering device, 25 ... Handle (bar handle), 44 ... Seat, 49 ... Battery, 125 ... Electric motor, 162 ... Body cover (body side cover), 166, 178 ... manual switch, 167 ... lever, 175 ... recoil starter, 176 ... operator (knob).

Claims (3)

In rough terrain vehicle equipped with an electric power steering device driven by battery power,
A rough terrain vehicle comprising a passenger seat that can be opened and closed by a lever behind a steering wheel for steering a wheel, and a manual switch for stopping power supply to the electric power steering device under the seat. .   The rough terrain vehicle according to claim 1, wherein a battery for supplying electric power to the electric power steering device is disposed below the seat. In rough terrain vehicle equipped with an electric power steering device driven by battery power,
The rough terrain vehicle includes a recoil starter operator for starting an engine inside a vehicle body cover, and supplies electric power to the electric power steering device inside the vehicle body cover and in the vicinity of the recoil starter operator. A rough terrain vehicle comprising a manual switch for stopping.

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