Wireless quick change end effector system for use with a robot

Patent metadata

Field	Value
Publication number	US-11845180-B2
Application number	US-201916517587-A
Country	US
Kind code	B2
Filing date	Jul 20, 2019
Priority date	Feb 20, 2015
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

A quick change end effector system for use with a robot includes a quick change end effector configured for application to a task to be completed by a robot, the quick change end effector further comprising an end effector magnet, and a robotic manipulator configured to lock to the end effector, the robotic manipulator further configured to use the end effector to complete the task, the robotic manipulator comprising a manipulator magnet, the manipulator magnet being configured to magnetically attract the end effector magnet, thereby locking the manipulator in a mechanically strong connection to the quick change end effector, wherein upon disengagement of the magnetic attraction locking the manipulator to the quick change end effector, the quick change end effector can be quickly removed from the manipulator.

First claim

We claim:

1. A quick change end effector system for use with a robot, comprising:
a quick change end effector configured for application to a task to be completed by a robot, the quick change end effector further comprising an end effector magnet; and
a robotic manipulator configured to lock to the end effector, the robotic manipulator comprising a manipulator magnet, the manipulator magnet being configured to magnetically attract the end effector magnet, thereby locking the manipulator to the quick change end effector;
wherein:
the manipulator magnet is free to move relative to the manipulator along a rotational axis that is perpendicular to a longitudinal axis of the end effector magnet, and
upon disengagement of the magnetic attraction locking the manipulator to the quick change end effector, the quick change end effector can be removed from the manipulator.

2. The quick change end effector system of claim 1 , wherein the quick change end effector comprises a tool configured to perform the robotic task.

3. The quick change end effector system of claim 2 , wherein: the tool comprises one of a paint gun, a welding torch, a cutter, a pair of scissors, a glue gun, a stapler, and a gripper.

4. The quick change end effector system of claim 3 , wherein:
the gripper comprises one or more of one or more fingers, a hook, a magnet, a vacuum cup, a suction device, and a soft adaptive finger device.

5. The quick change end effector system of claim 2 , wherein:
the manipulator magnet is free to move between a locked position and an unlocked position.

6. The quick change end effector system of claim 1 , wherein:
the manipulator magnet is free to rotate between a locked position and an unlocked position.

7. The quick change end effector system of claim 6 , wherein the locked position and the unlocked position are separated by approximately ninety (90) degrees.

8. The quick change end effector system of claim 6 , wherein when the manipulator magnet is in the locked position, the end effector magnet is locked by magnetic attraction to the manipulator magnet, thereby fixing one or more of a position and an orientation of the quick change end effector relative to the manipulator.

9. The quick change end effector system of claim 6 , wherein when the manipulator magnet is in the unlocked position, the end effector magnet and the manipulator magnet have no substantial magnetic attraction, and the quick change end effector can be removed from the manipulator.

10. The quick change end effector system of claim 6 , wherein when the manipulator magnet is in the unlocked position, the manipulator magnet is facing approximately ninety (90) degrees away from the end effector magnet.

11. The quick change end effector system of claim 1 , wherein:
the manipulator further comprises an actuator configured to move the manipulator magnet.

12. The quick change end effector system of claim 11 , wherein: the actuator is configured to perform one or more of rotating the manipulator magnet and retracting the manipulator magnet.

13. The quick change end effector system of claim 1 , wherein: the quick change end effector is selectable from a plurality of candidate quick change end effectors.

14. The quick change end effector system of claim 1 , wherein:
the manipulator comprises one or more of a Cartesian manipulator and a trapezoidal manipulator.

15. The quick change end effector system of claim 1 , further comprising: a communications element configured to communicate with the end effector.

16. The quick change end effector system of claim 15 , wherein the communications element is a wireless communications element.

17. The quick change end effector system of claim 1 , wherein: the manipulator further comprises a power transmitter; and the quick change end effector further comprises a power receiver configured to receive power sent by the power transmitter.

18. The quick change end effector system of claim 17 , wherein the power transmitter is a wireless power transmitter.

19. The quick change end effector system of claim 17 , wherein the power receiver is a wireless power receiver.

Assignees

• Fetch Robotics Inc
• Zebra Tech Corp

Inventors

• Ferguson Michael
• Medonis Mark

Classifications

• B25J15/0441 Primary

  having vacuum or magnetic means · CPC title

• B25J19/0045

  Contactless power transmission, e.g. by magnetic induction · CPC title

• B25J15/0466

  with means for checking exchange completion · CPC title