Robot hand

Patent metadata

Field	Value
Publication number	US-12420433-B2
Application number	US-202117561160-A
Country	US
Kind code	B2
Filing date	Dec 23, 2021
Priority date	Dec 24, 2020
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

A robot hand is provided. The robot hand includes a first and second drive gears rotated by first actuator and second actuators; a first interlocked gear interlocked with the second drive gear to rotate in opposite directions; a second interlocked gear interlocked with the first drive gear to rotate in opposite directions; a first inner link engaged with rotation of the first drive gear; a first outer link engaged with rotation of the first interlocked gear; a first end link connected to the first inner link and the first outer link opposite the first actuator; a second inner link engaged with rotation of the second interlocked gear; a second outer link engaged with rotation of the second drive gear; and a second end link connected to the second inner link and the second outer link opposite the second actuator.

First claim

What is claimed is:

1. A robot hand comprising:
a first drive gear on a first side configured to be rotated by a first actuator on the first side;
a second drive gear on a second side configured to be rotated by a second actuator on the second side;
a first interlocked gear on the first side interlocked with the second drive gear so that the first interlocked gear and the second drive gear rotate in opposite directions;
a second interlocked gear on the second side interlocked with the first drive gear so that the second interlocked gear and the first drive gear rotate in opposite directions;
a first inner link on the first side engaged with rotation of the first drive gear;
a first outer link on the first side engaged with rotation of the first interlocked gear;
a first end link on the first side connected to the first inner link and the first outer link opposite the first actuator;
a second inner link on the second side engaged with rotation of the second interlocked gear;
a second outer link on the second side engaged with rotation of the second drive gear; and
a second end link on the second side connected to the second inner link and the second outer link opposite the second actuator.

2. The robot hand of claim 1 , further comprising a controller configured to:
control the first inner link, the second inner link, the first outer link and the second outer link to perform an opening or closing operation by simultaneously operating the first actuator and the second actuator; and
control the first outer link, the second outer link, the first end link and the second end link to be synchronously operated by deactivating the first actuator and actuating the second actuator.

3. The robot hand of claim 1 , further comprising a first finger portion on the first side connected to the first end link.

4. The robot hand of claim 3 , wherein the first finger portion extends away from the first inner link and the first outer link and are configured to bend inward toward the first inner link.

5. The robot hand of claim 3 , wherein the first finger portion comprises a stopper configured to grip an object.

6. The robot hand of claim 3 , further comprising a second finger portion on the second side connected to the second end link.

7. The robot hand of claim 6 , wherein the second finger portion comprises a blower configured to blow air towards an object fastened by the first finger portion.

8. The robot hand of claim 6 , further comprising a clipper arranged between the first finger portion and the second finger portion.

9. The robot hand of claim 6 , wherein the second finger portion is shorter than the first finger portion.

10. The robot hand of claim 6 , further comprising:
a first adsorption portion on the first side arranged on the first finger portion; and
a second adsorption portion on the second side arranged on the second finger portion.

11. The robot hand of claim 10 , further comprising a third adsorption portion arranged between the first finger portion and the second finger portion.

12. The robot hand of claim 1 , further comprising:
any one or any combination of a first finger portion on the first side connected to the first end link or a second finger portion on the second side connected to the second end link; and
any one or any combination of a first adsorption portion arranged on the first finger portion, a second adsorption portion arranged on the second finger portion, and a third adsorption portion arranged between the first finger portion and the second finger portion.

13. The robot hand of claim 12 , further comprising a controller configured to:
recognize an object;
identify whether a finger gripping method is stored in a memory in association with the object;
control the first finger portion to grip the object when the finger gripping method is stored in the memory in association with the object;
identify whether an adsorption gripping method is stored in the memory in association with the object; and
control the first adsorption portion to grip the object when the adsorption gripping method is stored in the memory in association with the object.

14. The robot hand of claim 13 , wherein the controller is configured to:
identify whether a combination gripping method is stored in the memory in association with the object; and
control any one or any combination of the first finger portion or the second finger portion to grip the object in combination with any one or any combination of the first adsorption portion or the second adsorption portion when the combination gripping method is stored in the memory in association with the object.

15. The robot hand of claim 13 , wherein the controller is configured to:
identify a gripping method is not stored in the memory in association with the object;
control any one or any combination of an operation to grip the object with the first finger portion or an operation to grip the object with the first adsorption portion based on no method of gripping the object being stored in the memory in association with the object;
register the finger gripping method in association with the object in the memory based on the operation to grip the object with the first finger portion being successful; and
register the adsorption gripping method in association with the object in the memory based on the operation to grip the object with the first adsorption portion being successful.

16. A method of controlling a robot hand that includes a first actuator coupled to a first drive gear, a second actuator coupled to a second drive gear, a first interlocked gear interlocked with the second drive gear, and a second interlocked gear interlocked with the first drive gear, the method comprising:
identifying a first object;
positioning the robot hand with respect to the first object;
controlling a first inner link coupled to the first drive gear, a second inner link coupled to the second drive gear, a first outer link coupled to the first interlocked gear and a second outer link coupled to the second interlocked gear to perform a closing operation with respect to the first object by simultaneously operating the first actuator and the second actuator; and
controlling a first end link connected to the first inner link and the first outer link, and a second end link connected to the second inner link and the second outer link, to be synchronously operated to grip the first object by deactivating the first actuator and actuating the second actuator.

17. The method of claim 16 , wherein a first adsorption portion is provided on a first finger portion connected to the first inner link and the first outer link, and a second adsorption portion is provided on a second finger portion connected to the second inner link and the second outer link, and
wherein the method further comprises:
identifying a second object;
positioning the robot hand with respect to the second object;
identifying a finger gripping method is not associated with the second object;
identifying an adsorption gripping method is associated with the second object; and
controlling the first adsorption portion and the second adsorption portion to grip the second object based on the adsorption gripping method being associated with the second object.

18. The method of claim 17 , further comprising:
identifying a third object;
positioning the robot hand with respect to the third object;
identifying the finger gripping method is not associated with the third object;
identifying the adsorption gripping method is not associated

Assignees

• Samsung Electronics Co Ltd

Inventors

• Abe Yuki
• Kang Sungchul
• Yamagishi Takeshi

Classifications

• B25J15/086

  with means for synchronizing the movements of the fingers · CPC title

• B25J15/0028

  with movable, e.g. pivoting gripping jaw surfaces · CPC title

• B25J15/10

  with three or more finger members {(B25J15/0009 takes precedence)} · CPC title

• B25J15/08

  having finger members (B25J15/02, B25J15/04 take precedence) · CPC title

• B25J15/06

  with vacuum or magnetic holding means · CPC title