JPS54155551A - Safety device for elevator door - Google Patents
Safety device for elevator doorInfo
- Publication number
- JPS54155551A JPS54155551A JP6472578A JP6472578A JPS54155551A JP S54155551 A JPS54155551 A JP S54155551A JP 6472578 A JP6472578 A JP 6472578A JP 6472578 A JP6472578 A JP 6472578A JP S54155551 A JPS54155551 A JP S54155551A
- Authority
- JP
- Japan
- Prior art keywords
- door
- time
- object detecting
- detecting circuit
- elevator door
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Elevator Door Apparatuses (AREA)
Abstract
PURPOSE: To provide a safety system for elevator door, which enables to observe the state near the elevator door throughout the period from the time when the door closing motion is started to the time when the door is completely closed, through the selective use of an ultrasonic pulse radar type object detecting circuit and a light beam type object detecting circuit.
CONSTITUTION: An ultrasonic object detecting circuit 22 and a light-beam type object detecting circuit 23 are provided near the entrance of elevator door, so that door opening instruction is afforded by the output of circuit 22 in the period from the time when door closing motion is started to the time when clearance (x) of the door becomes a predetermined value, whereas door opening instruction is afforded by the output of circuit 23 in the period from the time the above door clearance (x) becomes smaller than the predetermined value to the time when the door is completely closed. With such an arrangement, it is enabled to actuate the safety system for elevator door all the time until door is completely closed, while eliminating the influence of ultrasonicwave reflection by the door.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6472578A JPS54155551A (en) | 1978-05-30 | 1978-05-30 | Safety device for elevator door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6472578A JPS54155551A (en) | 1978-05-30 | 1978-05-30 | Safety device for elevator door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54155551A true JPS54155551A (en) | 1979-12-07 |
Family
ID=13266404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6472578A Pending JPS54155551A (en) | 1978-05-30 | 1978-05-30 | Safety device for elevator door |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54155551A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009150982A1 (en) * | 2008-06-12 | 2009-12-17 | 三菱電機株式会社 | Door system |
| JP2010235284A (en) * | 2009-03-31 | 2010-10-21 | Fujitec Co Ltd | Elevator safety device |
| CN108439114A (en) * | 2018-04-13 | 2018-08-24 | 武汉万曦智能科技有限公司 | A kind of early warning detection device of elevator door abnormal opening state |
| US11274020B2 (en) | 2018-01-12 | 2022-03-15 | Otis Elevator Company | Door operation controller |
| US11745983B2 (en) | 2018-08-08 | 2023-09-05 | Otis Elevator Company | Elevator system with LIDAR and/or RADAR sensor |
-
1978
- 1978-05-30 JP JP6472578A patent/JPS54155551A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009150982A1 (en) * | 2008-06-12 | 2009-12-17 | 三菱電機株式会社 | Door system |
| JPWO2009150982A1 (en) * | 2008-06-12 | 2011-11-17 | 三菱電機株式会社 | Door system |
| JP2010235284A (en) * | 2009-03-31 | 2010-10-21 | Fujitec Co Ltd | Elevator safety device |
| US11274020B2 (en) | 2018-01-12 | 2022-03-15 | Otis Elevator Company | Door operation controller |
| CN108439114A (en) * | 2018-04-13 | 2018-08-24 | 武汉万曦智能科技有限公司 | A kind of early warning detection device of elevator door abnormal opening state |
| US11745983B2 (en) | 2018-08-08 | 2023-09-05 | Otis Elevator Company | Elevator system with LIDAR and/or RADAR sensor |
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