Title:
OBSTACLE SENSING DEVICE OF SHUTTER
Document Type and Number:
Japanese Patent JP3628436
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To surely transmit a decrease of residual capacity of a battery by setting a residual capacity flag when the battery voltage of a sensor for sensing an obstacle drops, and opening and closing a shutter under conditions different from normal conditions during the time while the flag is being set.
SOLUTION: A sensor 2 outputs a sensing signal when a shutter makes contact with an obstacle. A transmitting part 2a of the sensor 2 is driven by a battery being a drive electric source and a voltage sensing part 2aa sends a residual capacity signal to a receiving part 2b when a battery exhibits a voltage lower than a reference value, while the sensing signal is transmitted. A voltage monitoring part 4c of a sensing control means 4 extracts the residual capacity signal to set a residual capacity flag and at the same time, the means 4 actuates a reporting part 5 to display an alarm and abnormality and an open/closure control means 3 stops the shutter. During the time while the flag is being set, the means 3 opens or closes the shutter under conditions different from abnormal conditions even if an operation part PBS is opened or closed.
Inventors:
Kazuo Kikutani
Ayumi Kikuta
Yoshikawa Tadami
Ayumi Kikuta
Yoshikawa Tadami
Application Number:
JP13338296A
Publication Date:
March 09, 2005
Filing Date:
May 28, 1996
Export Citation:
Assignee:
Bunka Shutter Co., Ltd.
Mori Electric Co., Ltd.
Mori Electric Co., Ltd.
International Classes:
E06B9/80; E06B9/84; H02J7/00; (IPC1-7): E06B9/80; E06B9/84
Domestic Patent References:
| JP7074577B2 | ||||
| JP8068280A | ||||
| JP8028166A | ||||
| JP3025795U |
Attorney, Agent or Firm:
Norimitsu Nishimura
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