| CPC B60L 15/2009 (2013.01) [B60L 3/0007 (2013.01); B60L 15/30 (2013.01); B62B 5/0033 (2013.01); B62B 5/0404 (2013.01); B62D 5/046 (2013.01)] | 17 Claims |
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1. A cart comprising:
a driving wheel;
a motor configured to rotate the driving wheel;
a motor drive circuit configured to control supply of electric power to the motor;
a motor control device configured to control the motor via the motor drive circuit;
a switching element arranged on an electric power supply path to the motor drive circuit;
a switch circuit arranged separately from the motor control device and configured to switch the switching element between a conduction state and a non-conduction state; and
an operation member arranged on the cart and configured to be operated by a user, wherein
the cart is configured to operate in a manual mode and an automatic mode,
in the manual mode:
the motor is driven when the operation member is on and the motor is stopped when the operation member is off;
the motor control device is configured to drive the motor via the motor drive circuit when the operation member is on and is configured to stop the motor via the motor drive circuit when the operation member is off; and
the switch circuit is configured to put the switching element in the conduction state when the operation member is on and is configured to put the switching element in the non-conduction state when the operation member is off, and
in the automatic mode:
the motor is driven regardless of whether the operation member is on or off;
the motor control device is configured to drive the motor via the motor drive circuit regardless of whether the operation member is on or off; and
the switch circuit is configured to put the switching element in the conduction state regardless of whether the operation member is on or off.
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