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Arm structure of human-type robot

  • US 6,580,970 B2
  • Filed: 11/16/2001
  • Issued: 06/17/2003
  • Est. Priority Date: 11/17/2000
  • Status: Expired due to Term
First Claim
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1. An arm structure of a human-type robot in which an upper arm portion and a lower arm portion are connected to each other by a substantially cylindrical elbow joint so that they can be bent, said upper and lower arm portions each having a width larger than the diameter of said elbow joint as viewed in a direction of an axis of the elbow joint, and being bendable in a limited range between an extended position in which they are extended into a substantially straight line and a bent position in which they are bent in one direction from said extended position,wherein the position of the axis of said elbow joint is offset in said one direction from the center of the width of said upper and lower arm portions, and a lower end of said upper arm portion and an upper end of said lower arm portion, which are connected to the elbow joint, are decreased in width toward said elbow joint on a side opposite from said one direction.

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