US 11,911,898 B2
Robot
Yusuke Kitayama, Toyama (JP)
Assigned to NACHI-FUJIKOSHI CORP., Tokyo (JP)
Filed by NACHI-FUJIKOSHI CORP., Tokyo (JP)
Filed on Apr. 4, 2023, as Appl. No. 18/295,421.
Claims priority of application No. 2022-063572 (JP), filed on Apr. 6, 2022.
Prior Publication US 2023/0321816 A1, Oct. 12, 2023
Int. Cl. B25J 9/10 (2006.01)
CPC B25J 9/106 (2013.01) 6 Claims
OG exemplary drawing
 
1. A robot, comprising:
a first arm member;
a first joint member connected to one end of the first arm member;
a second arm member having one end connected to the first joint member, so as to rotate relative to the first arm member through the first joint member;
a second joint member connected to another end of the second arm member;
a third arm member having one end connected to the second joint member, so as to rotate relative to the second arm member through the second joint member;
a third joint member connected to another end of the third arm member;
a flange connected to the third joint member, and configuring to perform a predetermined work on a workpiece;
a first link having one end connected to the second joint member, and another end connected to the third joint member;
a second link having one end connected to the second joint member;
a counter weight connected to another end of the second link and the first joint member, and including a motor on a side opposite to the first joint member with the other end of the second link in between, the motor rotating the third arm member relative to the second arm member; and
a transmission member configuring to transmit rotating force generated by the motor to the third arm member through the first joint member, the second arm member, and the second joint member.