Arm operation mechanism and industrial robot incorporating the same
AssigneeDAIHEN Corporation
InventorTakafumi Uratani
Life of this patent
Estimating the term…
Abstract
An arm operation mechanism for an industrial robot includes a support, a first arm, a second arm, a link base, a parallel link and a conversion mechanism. The first arm has a base end pivotally connected to the support for rotation relative to the support. The second arm has a base end pivotally connected to a tip end of the first arm for rotation relative to the first arm. The link base is pivotally connected to the first arm for rotation relative to the first arm. The parallel link keeps a constant posture of the link base upon the rotation of the first arm. The conversion mechanism converts the rotation of the link base relative to the first arm into the rotation of the second arm relative to the link base.
Claims15
An arm operation mechanism comprising:
- a support;
- a first arm having a tip end and a base end, the base end of the first arm being pivotally connected to the support for rotation relative to the support;
- a second arm having a base end pivotally connected to the tip end of the first arm for rotation relative to the first arm;
- a link base pivotally connected to the first arm for rotation relative to the first arm;
- a parallel link for keeping a constant posture of the link base upon the rotation of the first arm;
- and
- a conversion mechanism for converting the rotation of the link base relative to the first arm into the rotation of the second arm relative to the link base;
- wherein the conversion mechanism comprises a first gear fixedly mounted to the link base, and a second gear rotatably mounted to the first arm in mesh with the first gear, the second gear being operatively connected to the base end of the second arm.
An industrial robot comprising a holder and an arm operation mechanism for movably supporting the holder, the arm operation mechanism comprising:
- a support;
- a first arm having a tip end and a base end, the base end of the first arm being pivotally connected to the support for rotation relative to the support;
- a second arm having a tip end and a base end, the tip end of the second arm being connected to the holder, the base end of the second arm pivotally connected to the tip end of the first arm for rotation relative to the first arm;
- a link base pivotally connected to the first arm for rotation relative to the first arm;
- a parallel link for keeping a constant posture of the link base upon the rotation of the first arm;
- and
- a conversion mechanism for converting the rotation of the link base relative to the first arm into the rotation of the second arm relative to the link base;
- wherein the conversion mechanism comprises a first gear fixedly mounted to the link base, and a second gear rotatably mounted to the first arm in mesh with the first gear, the second gear being operatively connected to the base end of the second arm.
Dependencies are inferred from the claim text.