US 12,263,581 B2
Robot
Kanji Sugimori, Kitakyushu (JP); Yuto Tanaka, Kitakyushu (JP); Nobuhiko Mihara, Kitakyushu (JP); and Hidenori Matsuura, Kitakyushu (JP)
Assigned to KABUSHIKI KAISHA YASKAWA DENKI, Kitakyushu (JP)
Filed by KABUSHIKI KAISHA YASKAWA DENKI, Kitakyushu (JP)
Filed on Aug. 17, 2023, as Appl. No. 18/451,827.
Claims priority of application No. 2022-142315 (JP), filed on Sep. 7, 2022.
Prior Publication US 2024/0075639 A1, Mar. 7, 2024
Int. Cl. B25J 18/00 (2006.01)
CPC B25J 18/00 (2013.01) 9 Claims
OG exemplary drawing
 
1. A robot comprising:
a base fixed to an installation surface;
a pivot base having a pivot base proximal end and a pivot base distal end opposite to the pivot base proximal end which is connected to the base such that the pivot base is rotatable around a first axis along a vertical direction;
an upper arm; and
a lower arm comprising:
a first extending portion having a first arm proximal end and a first arm distal end opposite to the first arm proximal end, a second axis perpendicular to the first axis passing through the first arm proximal end, a third axis parallel to the second axis passing through the first arm distal end, the first extending portion including a first connecting portion which protrudes along the second axis between the first arm proximal end and the first arm distal end and which has an outer wall to form a hollow structure;
a second extending portion having a second arm proximal end and a second arm distal end opposite to the second arm proximal end, the second axis passing through the second arm proximal end, the third axis passing through the second arm distal end, the second extending portion including a second connecting portion which protrudes along the second axis between the second arm proximal end and the second arm distal end and which has a hollow structure;
the first connecting portion and the second connecting portion being connected to form a connecting portion such that the first arm proximal end faces the second arm proximal end and such that the first arm distal end faces the second arm distal end;
a reinforcing portion provided in the first connecting portion, not in the second connecting portion, to connect one portion on an inner surface of the outer wall and another portion on the inner surface of the outer wall facing toward the one portion;
the pivot base distal end being provided between the first arm proximal end and the second arm proximal end to be connected to the first arm proximal end and the second arm proximal end such that the lower arm is rotatable around the second axis; and
the upper arm being provided between the first arm distal end and the second arm distal end to be connected to the first arm distal end and the second arm distal end such that the upper arm is rotatable around the third axis.