JPS55117158A - Opening and closing mechanism of opening and closing object - Google Patents

Opening and closing mechanism of opening and closing object

Info

Publication number
JPS55117158A
JPS55117158A JP2488379A JP2488379A JPS55117158A JP S55117158 A JPS55117158 A JP S55117158A JP 2488379 A JP2488379 A JP 2488379A JP 2488379 A JP2488379 A JP 2488379A JP S55117158 A JPS55117158 A JP S55117158A
Authority
JP
Japan
Prior art keywords
opening
springs
closing mechanism
pieces
side plate
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
JP2488379A
Other languages
Japanese (ja)
Inventor
Kimiaki Hayakawa
Shigeru Yoshimura
Kiyomichi Ichikawa
Akihiro Nomura
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP2488379A priority Critical patent/JPS55117158A/en
Publication of JPS55117158A publication Critical patent/JPS55117158A/en
Pending legal-status Critical Current

Links

Landscapes

  • Holders For Sensitive Materials And Originals (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

PURPOSE: To obtain the opening and closing mechanism which is high in safety and is easy to operate by using (N+1) pieces of springs for the opening and closing mechanism which are balanced by N pieces of springs and letting the values of N satisfy formula (I).
CONSTITUTION: The opening and closing mechanism of the automatic original original feeder is constituted by a stationary angle 28, movable angle 26, oscillating plate 29 and springs 25 spanned between the front side plate 23 and rear side plate 24. Now, when the automatic feeder is lifted, the shaft 30 fixed to the movable angle 26 moves up to the top end of the oblong hole 30a provided to the stationary angle 28. At this time, the movable angle and rear side plate 24 are balanced in the state where they are held pushed upward by the reaction of the springs 25. Here, when the weight of the automatic feeder is let Wkg and the force required for the operation Vkg, N is obtained by N>W/2V and if (N+1) pieces of springs are used, the operation is light andthe safety may be enhanced as well.
COPYRIGHT: (C)1980,JPO&Japio
JP2488379A 1979-03-02 1979-03-02 Opening and closing mechanism of opening and closing object Pending JPS55117158A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2488379A JPS55117158A (en) 1979-03-02 1979-03-02 Opening and closing mechanism of opening and closing object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2488379A JPS55117158A (en) 1979-03-02 1979-03-02 Opening and closing mechanism of opening and closing object

Publications (1)

Publication Number Publication Date
JPS55117158A true JPS55117158A (en) 1980-09-09

Family

ID=12150577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2488379A Pending JPS55117158A (en) 1979-03-02 1979-03-02 Opening and closing mechanism of opening and closing object

Country Status (1)

Country Link
JP (1) JPS55117158A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62174734A (en) * 1985-12-28 1987-07-31 Nippon Seimitsu Kogyo Kk Automatic original feeder
JPH02108945U (en) * 1989-02-17 1990-08-30
JP2015004982A (en) * 2013-05-20 2015-01-08 トヨフレックス株式会社 Original placing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62174734A (en) * 1985-12-28 1987-07-31 Nippon Seimitsu Kogyo Kk Automatic original feeder
JPH0526178B2 (en) * 1985-12-28 1993-04-15 Nisuka Kk
JPH02108945U (en) * 1989-02-17 1990-08-30
JP2015004982A (en) * 2013-05-20 2015-01-08 トヨフレックス株式会社 Original placing device

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