Electric-driving device for openable members
US4918360A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 2, 1988 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Aug 2, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60J7/0573
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electric driving device for openable members in which an openable member is opened and closed by rotation of driving shafts provided on right and left sides. The device includes a motor which rotates the driving shafts via a reduction mechanism, and switching relays which switch the rotational direction of the motor. Open and close command switches command the opening and closing of the openable member and a rotation synchronization sensor associated with the motor generates pulses synchronized with the rotation of the motor. A mechanical stopper limits the rotation of the driving shaft which is rotated via the reduction mechanism of the motor and a motor lock detecting means detects locking of the motor by detecting the pulse width generated by the rotation synchronization sensor. Also, an actuation stopping arrangement stops the actuation of an actuation device which supplies current to the motor if a signal is generated by the detection apparatus that detects locking of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.