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

Landscapes

  • Power-Operated Mechanisms For Wings (AREA)
  • Stopping Of Electric Motors (AREA)

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 TABLE AND MOBILE CONTROL DEVICE USED FOR THE SAME
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 (6)

* 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 TABLE AND MOBILE CONTROL DEVICE USED FOR THE SAME
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

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