JPS5451234A - Electric door apparatus - Google Patents

Electric door apparatus

Info

Publication number
JPS5451234A
JPS5451234A JP11678277A JP11678277A JPS5451234A JP S5451234 A JPS5451234 A JP S5451234A JP 11678277 A JP11678277 A JP 11678277A JP 11678277 A JP11678277 A JP 11678277A JP S5451234 A JPS5451234 A JP S5451234A
Authority
JP
Japan
Prior art keywords
door
resistance
speed
armature
deceleration
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
Application number
JP11678277A
Other languages
Japanese (ja)
Inventor
Seisuke Urata
Katsutaro Masuda
Isao Okubo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11678277A priority Critical patent/JPS5451234A/en
Publication of JPS5451234A publication Critical patent/JPS5451234A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To provide a safe electric door apparatus which ensures automatic slow closure in case of power failure, by means of a drive motor having a field system formed by an armature and a permanent magnet and a means adapted to cause the armature to be shortcircuited through a resistance against a power failure.
CONSTITUTION: When the power supply (positive and negative) is fails, contactor coils C, O and H are deenergized. Consequently, any of contacts C5, O5 and H3 is closed and an armatuae A is short circuited through a resistance PR2 in a circuit of A-H3-O5- C5-PR2-A. The resistance PR2 is set at a lower level than that at deceleration, at deceleration, while the N and S arrangement of a permanent magnet provides a constant field system. A motor 6 generates a strong power generation torque. The torque reduces to zero when the door is braked but it increases in proportion to the speed of the door when it falls by the own weight. This ckecks the closing speed of the door from increasing beyond a given speed, ensuring a safe closure
COPYRIGHT: (C)1979,JPO&Japio
JP11678277A 1977-09-30 1977-09-30 Electric door apparatus Pending JPS5451234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11678277A JPS5451234A (en) 1977-09-30 1977-09-30 Electric door apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11678277A JPS5451234A (en) 1977-09-30 1977-09-30 Electric door apparatus

Publications (1)

Publication Number Publication Date
JPS5451234A true JPS5451234A (en) 1979-04-21

Family

ID=14695568

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11678277A Pending JPS5451234A (en) 1977-09-30 1977-09-30 Electric door apparatus

Country Status (1)

Country Link
JP (1) JPS5451234A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6169481U (en) * 1984-10-13 1986-05-12
JPS6237490A (en) * 1985-08-09 1987-02-18 松下電工株式会社 Automatic switchgear for door
JPH0557277U (en) * 1992-01-13 1993-07-30 ダイハツディーゼル株式会社 Door opener
JP2006263200A (en) * 2005-03-24 2006-10-05 Daito Giken:Kk Game machine and moving body controller
CN114194666A (en) * 2021-12-16 2022-03-18 厦门芯阳科技股份有限公司 Intelligent garbage cover buffer control method, buffer device and intelligent garbage can

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6169481U (en) * 1984-10-13 1986-05-12
JPH0216066Y2 (en) * 1984-10-13 1990-05-01
JPS6237490A (en) * 1985-08-09 1987-02-18 松下電工株式会社 Automatic switchgear for door
JPH0643781B2 (en) * 1985-08-09 1994-06-08 松下電工株式会社 Door automatic opening / closing device
JPH0557277U (en) * 1992-01-13 1993-07-30 ダイハツディーゼル株式会社 Door opener
JP2006263200A (en) * 2005-03-24 2006-10-05 Daito Giken:Kk Game machine and moving body controller
CN114194666A (en) * 2021-12-16 2022-03-18 厦门芯阳科技股份有限公司 Intelligent garbage cover buffer control method, buffer device and intelligent garbage can
CN114194666B (en) * 2021-12-16 2023-03-24 厦门芯阳科技股份有限公司 Intelligent garbage cover buffer control method, buffer device and intelligent garbage can

Similar Documents

Publication Publication Date Title
JPS5743591A (en) Control method of ac motor
JPS5451234A (en) Electric door apparatus
JPS5795169A (en) Rotor for synchronous motor with permanent magnet
ES8403256A1 (en) Motor control apparatus with true RMS non sinusoidal negative sequence stator current projection mode
JPS527521A (en) Control means for electric vehicle
JPS5778385A (en) Digital control system for dc motor
JPS5343316A (en) Operation control system for electric car
JPS52109254A (en) Start control system for elevator
JPS5293046A (en) Controlling apparatus for elevator door
JPS57180356A (en) Exciter for synchronous machine
JPS5459743A (en) Controller of alternating current elevator
JPS51138816A (en) Control circuit of squirrel-cage induction motor
JPS54110415A (en) Controller for electric motor
JPS5376437A (en) Thermal control circuit
JPS5260924A (en) Control circuit in permanent magnet motor
JPS5491301A (en) Turntable drive device
JPS5513626A (en) Starting system of synchronous induction motor
JPS52131312A (en) Control device for electric motor vehicle
JPS5619303A (en) Protective device for chopper of electric rolling stock
JPS5243928A (en) Velocity control device of direct current motor
JPS5483255A (en) Safety device for elevator cage door opening and closing motor
JPS5691683A (en) Pumping-up time starting system of synchronous dynamotor at pumping-up power station
JPS56112899A (en) Method and device for starting induction generator
JPS53135001A (en) Driving system for turbo-machines
JPS5563589A (en) Emergency stopping device for variable speed induction motor