JPS55117158A - Opening and closing mechanism of opening and closing object - Google Patents
Opening and closing mechanism of opening and closing objectInfo
- 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
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
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)
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 |
-
1979
- 1979-03-02 JP JP2488379A patent/JPS55117158A/en active Pending
Cited By (4)
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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