Title:
CRIME PREVENTION DEVICE AND METHOD FOR MOTOR-DRIVEN DOOR
Document Type and Number:
Japanese Patent JP3458301
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent an opener for a motor-driven door from being driven to close the door when the door, even if opened without an input from a control switch or the like, is opened only slightly, in providing a crime-prevention con trol mode to output a closure drive command in the event that the door is opened without such an input.
SOLUTION: The control part 6 of an opener 4 is set to receive the inputs of pulse signals from an encoder type sensor 9 and a complete closure detection signal from a limit switch 8 and is designed to shift to a crime-prevention control mode after a predetermined timer period has elapsed since the input of the complete closure detection signal. After the shift to the crime prevention control mode, a closure drive command is input to the opener 4 when the control part 6 judges that it has received the pulse signals from the sensor 9 in excess of a predetermined number of pulses (received an open detection signal).
Inventors:
Akira Furuyano
Hiroshi Okuzumi
Hiroshi Okuzumi
Application Number:
JP28013496A
Publication Date:
October 20, 2003
Filing Date:
October 01, 1996
Export Citation:
Assignee:
Sanwa Shutter Co., Ltd.
International Classes:
E06B9/56; E06B9/68; E06B9/82; E06B9/86; G08B13/08; (IPC1-7): E06B9/82; E06B9/86; G08B13/08
Domestic Patent References:
| JP8254087A | ||||
| JP63164791A | ||||
| JP63130891A | ||||
| JP2183081A | ||||
| JP417744Y2 |
Attorney, Agent or Firm:
Tetsuo Hirose