Robot joint and robot including the same
AssigneeABB Schweiz AG
InventorsKaiyuan Cao, Xiaodong Cao, Yun Ha, Zhu Zhu, Jiajie Sha
Life of this patent
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Abstract
A robot joint and a robot using the robot joint is provided. The robot joint includes a first part and a second part configured to be rotatable with each other around a joint axis. A flexible printed circuit board is further included with a first fixing point and a second fixing point respectively fastened to the first part and the second part. The flexible printed circuit board is spiral-shaped prior to bending. With the relative rotation of the first part and the second part, the flexible printed circuit board is bent at various bending portions. This makes the robot joint more compact with a larger rotation range and a long lifetime in a cost effective way.
Claims20
A robot joint, comprising:
- a first part and a second part configured to be rotatable with each other around a joint axis;
- and
- a flexible printed circuit board including a first fixing point and a second fixing point respectively fastened to the first part and the second part, the flexible printed circuit board comprising an extension portion arranged to radially extend from a curve portion of the flexible printed circuit board between the first fixing point and the second fixing point prior to the bending, the extension portion being in the shape of arc and arranged to extend toward or away from a center point of the printed circuit board prior to the bending;
- wherein:
- the flexible printed circuit board prior to bending is spiral-shaped;
- and
- with the relative rotation of the first part and the second part, the flexible printed circuit board is bent at various bending portions.
Dependencies are inferred from the claim text.