US 12,330,510 B2
Cart
Ryo Umemoto, Anjo (JP); Hirokatsu Yamamoto, Anjo (JP); and Shingo Kaminokado, Anjo (JP)
Assigned to MAKITA CORPORATION, Anjo (JP)
Filed by MAKITA CORPORATION, Anjo (JP)
Filed on Jun. 30, 2022, as Appl. No. 17/855,410.
Claims priority of application No. 2021-117081 (JP), filed on Jul. 15, 2021.
Prior Publication US 2023/0013915 A1, Jan. 19, 2023
Int. Cl. B60L 15/30 (2006.01); B60L 3/00 (2019.01); B62B 5/00 (2006.01)
CPC B60L 15/30 (2013.01) [B60L 3/0015 (2013.01); B62B 5/0033 (2013.01); B62B 5/0076 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A cart comprising:
a driving wheel;
a motor configured to rotate the driving wheel;
a motor drive circuit configured to drive the motor;
a control device configured to control the motor via the motor drive circuit so that a travelling speed of the cart becomes equal to or lower than an upper limit travelling speed;
an operation member arranged on the cart and configured to receive an operation by a user; and
an overload detection sensor configured to detect an overload,
wherein the cart is configured to operate in a first mode, wherein in the first mode, the motor is driven when the operation member is on, and the motor is stopped when the operation member is off,
in the first mode, when the overload is detected by the overload detection sensor, the cart is allowed to travel at a state where the upper limit travelling speed is lowered, compared to a case where the overload is not detected,
the cart is configured to operate in a second mode, wherein in the second mode, the motor is driven regardless of whether the operation member is on or off,
the upper limit travelling speed in the second mode is set lower than the upper limit travelling speed in the first mode, and
in the second mode, when the overload is detected by the overload detection sensor, the cart is prohibited from travelling.