Shape compliant electroadhesive gripper

Patent metadata

Field	Value
Publication number	US-10875191-B2
Application number	US-201816023019-A
Country	US
Kind code	B2
Filing date	Jun 29, 2018
Priority date	Nov 8, 2017
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

A present disclosure relates to a shape compliant electroadhesive gripper for picking up atypical objects having various shapes, sizes, and materials, and a shape compliant electroadhesive gripper according to one embodiment of the present disclosure includes a body, a shape compliant module disposed on the body, rigidity of the shape compliant modules being variably controllable, and an electroadhesive module disposed on the shape compliant module.

First claim

What is claimed is:

1. A shape compliant electroadhesive gripper for picking up an atypical object, the gripper comprising:
a single body having a seamless flat side;
a single shape compliant module disposed on the seamless flat side of the body, rigidity of the shape compliant module being variably controllable; and
an electroadhesive module disposed on the shape compliant module,
wherein the shape compliant module includes a magnetorheological elastomer and a magnetic field controller, and
when a magnetic field is not applied, a shape of the shape compliant module is changed according to a shape of an external object which is brought into contact with the shape compliant electroadhesive gripper, and when the magnetic field is applied by the magnetic field controller, rigidity of the magnetorheological elastomer is increased to maintain the shape of the shape compliant module and wrap and support the external object, and
the shape compliant module continuously covers the seamless flat side of the body and the electroadhesive module continuously covers a surface of the shape compliant module such that an entire of the shape compliant module is surrounded by the body and the electroadhesive module.

2. The gripper of claim 1 , wherein:
the electroadhesive module includes an insulator and a conductor disposed on the insulator, and
the shape compliant electroadhesive gripper is able to adhere to an external object by an electrostatic force generated when a voltage is applied to the conductor.

3. The gripper of claim 2 , wherein:
the conductor includes a first conductor and a second conductor,
the first conductor and the second conductor are disposed and spaced apart from each other on the insulator, and
the shape compliant electroadhesive gripper is able to adhere to the external object by an electrostatic force generated when first and second voltages which are different from each other are applied to the first and the second conductors, respectively.

4. The gripper of claim 1 , wherein the body is connected to a gripper driver and is rotatable in two directions.

Assignees

• Dawoo Fa Co Ltd
• Daegu Gyeongbuk Inst Science & Tech
• Korea Univ Of Technology And Education Industry—Univ Cooperation Foundation
• Dawoofa Co Ltd
• Univ Korea Ind Univ Coop Found

Inventors

• Hwang Hae Sook
• Kim Hyung Chul
• Yun Dong Won
• Kim Sang Youn
• Jin Kyoung Bok

Classifications

• B65G47/92 Primary

  incorporating electrostatic or magnetic grippers · CPC title

• B25J15/12

  with flexible finger members · CPC title

• B25J15/0009

  comprising multi-articulated fingers, e.g. resembling a human hand · CPC title

• B25J15/0061

  mounted on a modular gripping structure · CPC title

• H02N13/00

  Clutches or holding devices using electrostatic attraction, e.g. using Johnson-Rahbek effect · CPC title