US 12,088,232 B2
Short-circuiting device and robot system including the same
Haruhiko Tan, Kobe (JP); and Masahiko Sumitomo, Kakogawa (JP)
Assigned to KAWASAKI JUKOGYO KABUSHIKI KAISHA, Kobe (JP)
Appl. No. 16/982,627
Filed by KAWASAKI JUKOGYO KABUSHIKI KAISHA, Kobe (JP)
PCT Filed Mar. 18, 2019, PCT No. PCT/JP2019/011166
§ 371(c)(1), (2) Date Sep. 21, 2020,
PCT Pub. No. WO2019/181849, PCT Pub. Date Sep. 26, 2019.
Claims priority of application No. 2018-050815 (JP), filed on Mar. 19, 2018.
Prior Publication US 2021/0028727 A1, Jan. 28, 2021
Int. Cl. H02P 3/22 (2006.01); B25J 19/00 (2006.01)
CPC H02P 3/22 (2013.01) [B25J 19/0004 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A robot system, comprising:
a short-circuiting device that includes a short circuit mounting portion and a short circuit;
a robot with a robot mounting portion, a robotic arm, at least one motor and at least one non-excitation actuated electromagnetic brake provided for the respective at least one motor, the robotic arm including at least one joint shaft that is provided with the respective at least one motor; and
a robot controller that includes a robot controller mounting portion that is configured to be electrically connected to the robot mounting portion of the robot via the robot controller mounting portion, wherein:
the short circuit is electrically connected to the robot mounting portion of the robot via the short circuit mounting portion,
the short circuit is provided separately from the robot controller configured to control the robot,
the short circuit is configured to apply a dynamic brake to each motor,
the robot mounting portion is a common mounting portion that can be mounted to both of the short circuit mounting portion and the robot controller mounting portion such that the robot mounting portion can be separately electrically connected to either the short circuit mounting portion or the robot controller mounting portion but cannot be electrically connected to both the short circuit mounting portion and the robot controller mounting portion at a same time,
the short-circuiting device further comprises an auxiliary power supply configured to supply electric power to the non-excitation actuated electromagnetic brake when the non-excitation actuated electromagnetic brake is not supplied with electric power from a main power supply of the robot, and
the short-circuiting device is configured such that the auxiliary power supply supplies electric power to the non-excitation actuated electromagnetic brake in order to release the at least one non-excitation actuated electromagnetic brake while the short circuit applies the dynamic brake to each motor.