Electric hand with cushioning mechanism
US6331758A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2000 |
| Grant date | Dec 18, 2001 |
| Priority date | — |
| Expiry date | Sep 5, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25J15/028
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An inertial force applied to a motor drive shaft when jaw members stop at opening and closing ends, grasping positions of a workpiece, and the like is absorbed and damage to motor parts such as gears due to impact is prevented. For this purpose, in an electric hand in which a pair of cam grooves 15, 15 are provided to a cam member 12 mounted to the drive shaft 3a of an electric motor 3, drive pins 13 fitted into the cam grooves 15, 15 are respectively provided to the pair of jaw members 2, 2 for grasping the workpiece, and a reciprocating rotating motion of the drive shaft 3a is converted to opening/closing motions of the jaw members 2, 2 by the cam member 12 and the drive pins 13, an inner cylinder member 18 mounted to the drive shaft 3a and an outer cylinder member 19 provided to the cam member 12 and fitted with the inner cylinder member 18 such that the outer cylinder member 19 can rotate with respect to the inner cylinder member 18 are connected through a plurality of elastic bodies 20 and impact that acts on the drive shaft 3a when the cam member 12 stops at swinging ends is absorbed by elastic deformation of the elastic bodies 20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.