JPH0529897B2 - - Google Patents
Info
- Publication number
- JPH0529897B2 JPH0529897B2 JP2340728A JP34072890A JPH0529897B2 JP H0529897 B2 JPH0529897 B2 JP H0529897B2 JP 2340728 A JP2340728 A JP 2340728A JP 34072890 A JP34072890 A JP 34072890A JP H0529897 B2 JPH0529897 B2 JP H0529897B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- support member
- pressure bonding
- mounting member
- document
- 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.)
- Expired - Fee Related
Links
- 230000006835 compression Effects 0.000 claims description 16
- 238000007906 compression Methods 0.000 claims description 16
- 238000003825 pressing Methods 0.000 description 10
- 239000011521 glass Substances 0.000 description 5
- 238000002788 crimping Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 2
- 230000002301 combined effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
- Holders For Sensitive Materials And Originals (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Closures For Containers (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は印刷機や複写機等における原稿圧着
板開閉装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a document pressure plate opening/closing device in a printing machine, a copying machine, or the like.
（従来の技術）
従来、この種の原稿圧着板開閉装置は、原稿圧
着板を中間開成角度で安定的に停止保持させて原
稿裁置台上で原稿の載置及び交換を容易にするた
めに、装置本体上に取り付けた取付部材と、原稿
圧着板を支持するために取付部材に回動自在にヒ
ンジピンを介して軸着した支持部材との間に、該
支持部材を原稿圧着板の開成方向へ附勢させる圧
縮コイルスプリングを弾設したものが公知であ
り、これらの技術は、例えば特開昭53−30324号
公報や米国特許第3187374号、及び特開昭57−
12779号等の各公報に開示されている。(Prior Art) Conventionally, this type of document pressure plate opening/closing device stably stops and holds the document pressure plate at an intermediate opening angle to facilitate placing and replacing the document on the document placement table. Between the mounting member attached to the main body of the apparatus and the support member rotatably attached to the mounting member via a hinge pin to support the document pressure plate, the support member is moved in the opening direction of the document pressure plate. A device in which a compressed coil spring is elastically installed is known, and these techniques are disclosed in, for example, Japanese Patent Application Laid-Open No. 53-30324, US Pat.
It is disclosed in various publications such as No. 12779.
（発明が解決すべき課題）
上述した従来の開閉装置は、原稿圧着板が通常
のものでさほどの重量のないものの場合には、こ
れで充分であつたが、原稿圧着板に例えば原稿送
り装置等が附設されて重量が増した場合には、原
稿圧着板の重量が圧縮コイルスプリングの弾力よ
り勝り始める閉成角度から急激に落下し、手を挟
んだり、機械に衝撃を与えたりするという問題が
生じた。(Problem to be Solved by the Invention) The conventional opening/closing device described above is sufficient when the original pressing plate is a normal one and does not have much weight. etc., the weight of the document crimping plate increases, the weight of the document crimping plate begins to overcome the elasticity of the compression coil spring, and the plate suddenly falls from the closing angle, causing the problem of hands being caught or shocks being applied to the machine. occurred.
そこで、開閉装置にフリクシヨンを強く作用さ
せることが考えられたが、そうすると原稿圧着板
を開閉する際の操作力が増大し、操作者に力の負
担をかけるという問題が生じた。 Therefore, it has been considered to apply a strong force of friction to the opening/closing device, but this increases the operating force required to open and close the document pressure plate, resulting in a problem of placing a burden on the operator.
この発明の目的は、簡単な構造を有し、重い原
稿圧着板の開閉操作に支障を来たすことなく、そ
の急激な落下を防止できるように構成した、原稿
圧着板開閉装置を提供せんとするにある。 SUMMARY OF THE INVENTION An object of the present invention is to provide an original pressing plate opening/closing device which has a simple structure and is configured to prevent the sudden fall of a heavy original pressing plate without interfering with the opening/closing operation of the heavy original pressing plate. be.
（課題を解決するための手段）
上述し目的を達成するためにこの発明は、装置
本体上に取り付けた取付部材と、この取付部材に
ヒンジピンを介して回動自在に軸着された原稿圧
着板の支持部材と、この支持部材と前記取付部材
との間に弾設された該支持部材を原稿圧着板の開
成方向へ附勢させる圧縮コイルスプリングと、前
記ヒンジピンに環巻きされつつ前記取付部材と支
持部材との間に弾設された同じく前記原稿圧着板
を開成方向へ附勢させる捩じりコイルスプリング
と含んで原稿圧着板開閉装置を構成したものであ
る。(Means for Solving the Problems) In order to achieve the above-mentioned objects, the present invention includes a mounting member attached to the main body of the apparatus, and a document pressure plate rotatably attached to the mounting member via a hinge pin. a compression coil spring that is elastically installed between the support member and the mounting member and biases the support member in the opening direction of the document pressure bonding plate; and a compression coil spring that is wound around the hinge pin and attached to the mounting member The original pressing plate opening/closing device includes a torsion coil spring elastically installed between the original pressing plate and the support member and biasing the original pressing plate in the opening direction.
（作用）
圧縮コイルスプリングの弾力が原稿圧着板の重
量を下回る領域において、捩じりコイルスプリン
グの弾力が強く作用することになる他、互いにモ
ーメント曲線の異なるスプリングの弾力の合成に
よつて、原稿圧着板のトルク曲線に近い合成モー
メント曲線を創出できるものである。(Function) In the region where the elasticity of the compression coil spring is less than the weight of the document crimping plate, the elasticity of the torsion coil spring acts strongly, and by combining the elasticities of springs with different moment curves, It is possible to create a composite moment curve that is close to the torque curve of the crimp plate.
（実施例）
以下にこの発明を図面に示した一実施例に基づ
いて詳細に説明すると、例えば複写機の装置本体
Ａの後部アツパープレートａ上には、両側板１
ａ，１ａを有する取付部材１が取付ビス２ａ，２
ｂによつて固着されている。尚、この取付部材１
は取付釦その他の公知の手段によつて脱着自在に
取り付けられても良い。また、この取付部材１は
アツパープレートａと一体に構成されても良い。
この取付部材１の一側上面には、同じく両側板３
ａ，３ａを有するスプリング受部材３がリベツト
４によつて固着されると共に、その両側板１ａ，
１ａの一側に設けた取付穴１ｂ，１ｂに回転しな
いように固定させた軸受部材５，５には、ヒンジ
ピン６を介して支持部材７がその両側板７ａ，７
ａを枢着させている。ヒンジピン６は筒体８に嵌
挿されており、この筒体８に捲装した一対の捩じ
りコイルスプリング９，９が、その各々の端部９
ａ，９ｂ・９ａ，９ｂを取付部材１と支持部材７
の両側板７ａ，７ａ間に軸架させたストツパーピ
ン１０との間に当接させることによつて、取付部
材１と支持部材７との間に弾設され、該支持部材
７を常に時計方向へ回動附勢させている。(Embodiment) The present invention will be described in detail below based on an embodiment shown in the drawings. For example, on the rear upper plate a of the apparatus main body A of a copying machine, there are side plates 1
The mounting member 1 having the mounting screws 2a and 2a has the mounting screws 2a and 2a.
It is fixed by b. In addition, this mounting member 1
may be detachably attached using a mounting button or other known means. Moreover, this mounting member 1 may be constructed integrally with the upper plate a.
On the upper surface of one side of this mounting member 1, there are also both side plates 3.
A spring receiving member 3 having rivets 4a and 3a is fixed by rivets 4, and its side plates 1a,
A support member 7 is attached to both side plates 7a, 7 via a hinge pin 6 to bearing members 5, 5 which are fixed so as not to rotate in mounting holes 1b, 1b provided on one side of 1a.
A is pivoted. The hinge pin 6 is fitted into a cylindrical body 8, and a pair of torsion coil springs 9, 9 wound around the cylindrical body 8 are attached to each end 9.
a, 9b and 9a, 9b are the mounting member 1 and the support member 7
By abutting the stopper pin 10 which is axially mounted between the side plates 7a, 7a, the support member 7 is elastically installed between the mounting member 1 and the support member 7, and the support member 7 is always moved clockwise. The rotation is energized.
軸受部材５，５と支持部材７の両側板７ａ，７
ａとの間には、例えばフアイバー等の摩擦部材１
１，１１がその中心部にヒンジピン６を挿通させ
つつ介在させられると共に、このヒンジピン６の
頭部６ａと一方の側板７ａとの間には、スプリン
グワツシヤー１２がその中心に該ヒンジピン６を
挿通させつつ介在させられており、ヒンジピン６
の尾部６ｂをかしめることによつて、摩擦部材１
１，１１の両側面に所定の摩擦力が生ずるように
なつている。 Bearing members 5, 5 and supporting member 7 side plates 7a, 7
A friction member 1 such as a fiber is provided between the
1 and 11 are interposed with the hinge pin 6 inserted through the center thereof, and a spring washer 12 is inserted between the head 6a of the hinge pin 6 and one side plate 7a through the center of which the hinge pin 6 is inserted. The hinge pin 6
By caulking the tail portion 6b of the friction member 1
A predetermined frictional force is generated on both sides of 1 and 11.
支持部材７の一側略中央部には、一対の翼片１
３，１３が所定間隔を空けて垂設され、この翼片
１３，１３に設けた長穴１３ａ，１３ａに軸着さ
せた支持ピン１４と、スプリング受部材３の両側
板３ａ，３ａに設けた長穴３ｂ，３ｂに軸着させ
た支持ピン１５との間には、交互にシリンダー部
１６ａ，１６ａと、このシリンダー部１６ａ，１
６ａ内に挿入される支持棒１６ｂ，１６ｂとを設
けたスプリング制御部材１６，１６が凹部１６
ｃ，１６ｃを突き合わせて介在させられると共
に、このスプリング制御部材１６，１６の間に
は、このシリンダー部１６ａ，１６ａと支持棒１
６ｂ，１６ｂを中心部軸方向へ挿通させつつ圧縮
コイルスプリング１７，１７が弾設されている。 A pair of wing pieces 1 are provided approximately at the center of one side of the support member 7.
3 and 13 are vertically installed at a predetermined interval, and support pins 14 are pivoted in elongated holes 13a, 13a provided in the wing pieces 13, 13, and support pins 14 are provided in both side plates 3a, 3a of the spring receiving member 3. Cylinder portions 16a, 16a are arranged alternately between the support pins 15 which are pivoted in the elongated holes 3b, 3b, and the cylinder portions 16a, 1
The spring control members 16, 16 provided with support rods 16b, 16b inserted into the recess 16
c, 16c are interposed against each other, and between the spring control members 16, 16, the cylinder portions 16a, 16a and the support rod 1 are interposed.
Compression coil springs 17, 17 are elastically installed while 6b, 16b are inserted in the central axial direction.
支持部材７の両側板７ａ，７ａへ、ヒンジピン
６による軸支側とは反対側に位置して回転しない
ように軸受部材１８，１８が取りつけられてお
り、この軸受部材１８，１８には、ピン１９を介
して制御部材２０の両側板２０ａ，２０ａが軸着
されると共に、このピン１９はその頭部１９ａを
一方向の側板２０ａにより突設した突起２０ｂへ
当接することにより、該制御部材２０と共に回転
するように構成されている。尚、この制御部材２
０は原稿圧着板Ｂと一体に構成されても良い。そ
して、この原稿圧着板Ｂには例えば現高送り装置
のようなものが装備されており重量がある。 Bearing members 18, 18 are attached to both side plates 7a, 7a of the support member 7 so as to be located on the opposite side to the side supported by the hinge pin 6 so as not to rotate. Both side plates 20a, 20a of the control member 20 are pivoted through the pin 19, and the head 19a of the pin 19 abuts against a protrusion 20b protruding from the side plate 20a in one direction. It is configured to rotate with the Furthermore, this control member 2
0 may be configured integrally with the document pressure bonding plate B. The document pressure bonding plate B is equipped with, for example, a high-speed feed device and is therefore heavy.
支持部材７には、ピン１９側ではあるが軸支個
所を異にしてさらに制御ピン２１が、頭部２１ａ
を側板２０ａより突設させた突起２０ｃへ当接さ
せることによりそれ自身は回転し−いように取り
つけられている。この制御ピン２１には、第１ア
ーム部材２２，２２が枢着され、この第１アーム
部材２２，２２の自由端側には、一端部を取付部
材１の両側板へピン２３，２３によつて枢着させ
た第２アーム部材２４，２４の自由端側がピン２
４ａ，２４ａによつて枢着されており、所謂クラ
ンク手段２５，２５を構成している。そして、ピ
ン１９には捩じりコイルスプリング２６，２６が
捲装されつつ制御ピン２１と支持ピン１４との間
に弾設されると共に、制御部材２０には原稿圧着
板Ｂの後部が固着されている。 The support member 7 further includes a control pin 21 on the pin 19 side but at a different pivot point.
It is mounted so that it cannot rotate itself by abutting against a protrusion 20c protruding from the side plate 20a. First arm members 22, 22 are pivotally attached to the control pin 21, and one end of the first arm members 22, 22 is connected to both side plates of the mounting member 1 by pins 23, 23 on the free end sides of the first arm members 22, 22. The free end side of the second arm members 24, 24 which are pivotally connected together is connected to the pin 2.
4a, 24a, and constitute so-called crank means 25, 25. A torsion coil spring 26, 26 is wound around the pin 19 and elastically installed between the control pin 21 and the support pin 14, and the rear part of the original pressure bonding plate B is fixed to the control member 20. ing.
今、原稿圧着板Ｂを閉じた状態において、支持
部材７と制御部材２０は取付部材１に対して互い
に折り畳まれた状態にある。 Now, when the document pressure bonding plate B is closed, the support member 7 and the control member 20 are in a mutually folded state relative to the mounting member 1.
この状態において捩じりコイルスプリング９，
９の弾力と、圧縮コイルスプリング１７，１７の
弾力の合成弾力は原稿圧着板Ｂの重量を下回つて
いるので、原稿圧着板Ｂは安定した閉成状態を維
持し、自重で原稿をコンタクトガラス２７上へ押
圧させている。勿論、ここのところは、圧縮コイ
ルスプリング１７，１７の弾力の作用方向を下向
きにさせることにより、原稿圧着板Ｂをコンタク
トガラス２７上へ押圧させるように構成しても良
い。さらに、クランク手段２５，２５（一方のみ
表示）は制御部材２０の制御ピン２１を時計方向
へ引張り、さらに、捩じりコイルスプリング２
６，２６（一方のみ表示）も同じく制御ピン２１
を時計方向へ回動附勢させている。上記した状態
において圧縮コイルスプリング１７，１７は最大
に圧縮された状態にあるが、その弾力は原稿圧着
板Ｂを開く方向へはほとんど作用していない。 In this state, the torsion coil spring 9,
Since the combined elasticity of the elasticity of the compression coil spring 9 and the elasticity of the compression coil springs 17 and 17 is less than the weight of the original pressure bonding plate B, the document pressure bonding plate B maintains a stable closed state and presses the document with its own weight onto the contact glass. 27 is pressed upward. Of course, at this point, the original pressing plate B may be pressed onto the contact glass 27 by directing the elasticity of the compression coil springs 17, 17 downward. Furthermore, the crank means 25, 25 (only one shown) pulls the control pin 21 of the control member 20 clockwise, and furthermore, the torsion coil spring 2
6 and 26 (only one shown) are also control pins 21
is rotated clockwise. In the above-mentioned state, the compression coil springs 17, 17 are in the maximum compression state, but their elasticity hardly acts in the direction to open the document pressure bonding plate B.
次に、この状態から原稿圧着板Ｂを開くと、制
御部材２０は支持部材７の背部に当接しているの
で、該原稿圧着板Ｂは支持部材７のヒンジピンに
よる軸支位置を支点に該支持部材７及び制御部材
２０と共に時計方向へ回転して第５図乃至第６図
に示したように開かれる。この原稿圧着板Ｂが開
かれるにつれてスプリング制御部材１６，１６と
共に時計方向へ回動する圧縮コイルスプリング１
７，１７の作用方向は、支持部材７を開方向へ押
すように変化し、かつ、この弾力が捩じりコイル
スプリング９，９の弾力と合わさつて原稿圧着板
Ｂの重量を減殺させる方向へ作用するので、該原
稿圧着板Ｂはその重量を余り感ぜしむることなく
開かれ、かつ、原稿圧着板Ｂの重量、即ち、開角
度によつて刻々と変化するトルクと、これを打ち
消す方向に作用する弾力とがバランスしたところ
で該原稿圧着板Ｂより手を離しても、後述したよ
うに若干反転した状態で停止し自然落下すること
がない。 Next, when the original pressure bonding plate B is opened from this state, since the control member 20 is in contact with the back of the support member 7, the document pressure bonding plate B supports the document pressure bonding plate B using the pivot position of the hinge pin of the support member 7 as a fulcrum. Together with the member 7 and the control member 20, it is rotated clockwise and opened as shown in FIGS. 5-6. The compression coil spring 1 rotates clockwise together with the spring control members 16, 16 as the original pressure bonding plate B is opened.
The direction of action of 7 and 17 changes so as to push the support member 7 in the opening direction, and this elasticity is combined with the elasticity of the torsion coil springs 9 and 9 to reduce the weight of the document pressure bonding plate B. Therefore, the original pressure bonding plate B can be opened without feeling the weight too much, and the weight of the document pressure bonding plate B, that is, the torque that changes moment by moment depending on the opening angle, and the direction to cancel this torque. Even if you release your hand from the document pressure bonding plate B when the elasticity acting on the document pressure plate B is balanced, the document will stop in a slightly inverted state as described later and will not fall naturally.
そして、この停止許容範囲は、摩擦部材１１，
１１とスプリングワツシヤー１２を、取付部材１
と支持部材７の軸支個所、即ち、ヒンジピン６の
位置に介在させ、かつヒンジピン６の尾部６ｂを
かしめたことによつて生じた摩擦力によつて増大
している。 This stop tolerance range is defined by the friction members 11,
11 and spring washer 12, and attaching member 1.
This is increased by the frictional force generated by interposing the shaft at the pivot point of the support member 7, that is, the position of the hinge pin 6, and caulking the tail portion 6b of the hinge pin 6.
原稿圧着板Ｂをさらに開くと、捩じりコイルス
プリング９，９の弾力と圧縮コイルスプリング１
７，１７の弾力による合成弾力は原稿圧着板Ｂの
トルクを越えることになるので、原稿圧着板Ｂは
自然に開かれ、第７図乃至第８図に示したように
約75°の開角度でストツパーピン１０が取付部材
１の両側板１ａ，１ａの縁部に当接することによ
つて停止する。 When the original pressure bonding plate B is further opened, the elasticity of the torsion coil springs 9 and the compression coil spring 1 are
Since the combined elasticity of the elasticities 7 and 17 exceeds the torque of the original pressure bonding plate B, the document pressure bonding plate B is naturally opened and has an opening angle of approximately 75° as shown in FIGS. 7 and 8. The stopper pin 10 comes into contact with the edges of the side plates 1a, 1a of the mounting member 1, and stops.
この最大開角度まで開かなくとも、使用に支障
はなく、約35°〜60°の開成角度範囲で手を離す
と、原稿圧着板Ｂは上述したように捩じりコイル
スプリング２６，２６の弾力に抗して制御部材２
０毎反転した状態で停止し、この反転角度は原稿
圧着板Ｂの開角度における各クランク手段２５，
２５を構成する第１及び第２アーム部材２２，２
２・２４，２４を各々軸支する制御ピン２１とピ
ン２３，２３間の距離によつて定まる。 Even if it does not open to this maximum opening angle, there is no problem in using it, and when you release your hand within the opening angle range of approximately 35° to 60°, the original pressure bonding plate B will be torsionally elasticized by the coil springs 26 and 26 as described above. control member 2 against
It stops in a reversed state every 0, and this reversal angle is determined by each crank means 25,
The first and second arm members 22, 2 constituting 25
It is determined by the distance between the control pin 21 and the pins 23, 23 that pivotally support the pins 2, 24, and 24, respectively.
この原稿圧着板Ｂの反転は、最大角度に開いた
ものを閉じる際にも生ずる。 This reversal of the original pressure bonding plate B also occurs when closing the one opened to the maximum angle.
開いた原稿圧着板Ｂを閉じると、該原稿圧着板
Ｂは上述したように若干反転した状態でその反転
角度を刻々と変化させつつ捩じりコイルスプリン
グ９，９と圧縮コイルスプリング１７，１７の弾
力に抗して閉じられ、該原稿圧着板Ｂがコンタク
トガラス２７上に対して略平行となつた位置で、
クランク手段２５，２５と捩じりコイルスプリン
グ２６，２６の弾力の相剰効果によつて、原稿圧
着板Ｂはコンタクドガラス２７に対して平行状態
を維持したまま閉じられる。 When the opened document pressure bonding plate B is closed, the document pressure bonding plate B is slightly inverted as described above, and the torsion coil springs 9, 9 and the compression coil springs 17, 17 are rotated while changing the inversion angle moment by moment. At a position where the document pressure bonding plate B is closed against elasticity and is approximately parallel to the contact glass 27,
Due to the combined effect of the elasticity of the crank means 25, 25 and the torsion coil springs 26, 26, the original pressure bonding plate B is closed while maintaining a state parallel to the contact glass 27.
したがつて、コンタクトガラス２７上の原稿は
上下方向から水平に面圧を受けることになるの
で、従来のもののように原稿がづれたり、しわが
よつたりする心配が全くないものである。 Therefore, since the original on the contact glass 27 is subjected to surface pressure horizontally from above and below, there is no need to worry about the original being shifted or wrinkled as in the conventional case.
さらに、原稿が本２８のように厚いものであつ
ても、反転した原稿圧着板Ｂが本２８上面を第９
図に示したように略水平に覆うことができるの
で、露光が外部へ漏れ、或は外光が機械内部へ侵
入するのを可及的に防止できるものである。 Furthermore, even if the original is thick like the book 28, the reversed original pressing plate B will cover the upper surface of the book 28 in the ninth position.
As shown in the figure, since it can be covered approximately horizontally, leakage of exposure light to the outside or intrusion of outside light into the inside of the machine can be prevented as much as possible.
（効果）
以上詳細に説明したようにこの発明に依れば、
簡単な構造を有し、原稿圧着板が重い場合でも急
激に落下することがないので安全である上に、機
械に衝撃を与えることがなく、開いた原稿圧着板
を安定的に停止できる範囲を増大でき、さらに開
閉操作を軽く行うことができるという効果を奏し
得る。(Effects) As explained in detail above, according to this invention,
It has a simple structure and is safe because it will not fall suddenly even when the document pressure plate is heavy.It also has a range that allows the opened document pressure plate to be stably stopped without giving a shock to the machine. In addition, the opening and closing operations can be performed easily.
図面のこの発明の一実施例を示し、第１図はこ
の発明に係る開閉装置の一部断面平面図、第２図
は第１図におけるＡ−Ａ線断面図、第３図は第１
図におけるＢ−Ｂ線断面図、第４図は原稿圧着板
を中間開角度に開いた状態において切断個所を第
２図に対応させて見た側断面図、第５図は第４図
において切断個所を第４図に対応させて見た側面
図、第６図は原稿圧着板を全開した状態において
切断個所を第２図に対応させて見た側断面図、第
７図は第６図において切断個所を第３図に対応さ
せて見た側断面図、第８図は原稿が本のように厚
いものの場合の側断面図、第９図は本願発明に係
る原稿圧着板開閉装置の分解斜視図である。
Ａ……装置本体、Ｂ……原稿圧着板、１……取
付部材、６……ヒンジピン、７……支持部材、
９，９……捩じりコイルスプリング、１０……ス
トツパーピン、１６……スプリング制御部材、１
７，１７……圧縮コイルスプリング、１９……ピ
ン、２０……制御部材、２１……制御ピン、２
５，２５……クランク手段。
The drawings show one embodiment of the present invention, and FIG. 1 is a partially sectional plan view of a switchgear according to the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG.
Figure 4 is a cross-sectional view taken along line B-B in the figure, Figure 4 is a side cross-sectional view of the document pressure plate opened at an intermediate opening angle, and the cut point is shown in Figure 2, and Figure 5 is a cut taken in Figure 4. FIG. 6 is a side sectional view of the cut points shown in FIG. 2 with the original pressure bonding plate fully opened, and FIG. 7 is a side view of the cut points shown in FIG. FIG. 8 is a side sectional view showing the cutting location corresponding to FIG. 3, FIG. 8 is a side sectional view when the original is thick like a book, and FIG. 9 is an exploded perspective view of the original pressing plate opening/closing device according to the present invention. It is a diagram. A...Device body, B...Document pressure bonding plate, 1...Mounting member, 6...Hinge pin, 7...Supporting member,
9, 9...Torsion coil spring, 10...Stopper pin, 16...Spring control member, 1
7, 17... Compression coil spring, 19... Pin, 20... Control member, 21... Control pin, 2
5, 25...Crank means.
Claims (1)
付部材にヒンジピンを介して回動自在に軸着され
た原稿圧着板の支持部材と、この支持部材と前記
取付部材との間に弾設された該支持部材の原稿圧
着板の開成方向へ附勢させる圧縮コイルスプリン
グと、前記ヒンジピンに環巻きされつつ前記取付
部材と支持部材との間に弾設された同じく前記原
稿圧着板を開成方向へ附勢させる捩じりコイルス
プングとを含むことを特徴とする、原稿圧着板開
閉装置。1. A mounting member mounted on the main body of the apparatus, a support member for a document pressure plate rotatably attached to this mounting member via a hinge pin, and a mounting member elastically installed between this support member and the mounting member. a compression coil spring that biases the original pressure bonding plate of the support member in the opening direction; and a compression coil spring that urges the document pressure bonding plate of the support member in the opening direction that is wound around the hinge pin and resiliently provided between the mounting member and the support member. 1. A document pressure plate opening/closing device comprising: a torsion coil spring for applying force;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2340728A JPH03184059A (en) | 1990-11-30 | 1990-11-30 | Original press-contacting plate switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2340728A JPH03184059A (en) | 1990-11-30 | 1990-11-30 | Original press-contacting plate switching device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12099084A Division JPS60263935A (en) | 1984-06-13 | 1984-06-13 | Opening and closing device for original press-contacting plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03184059A JPH03184059A (en) | 1991-08-12 |
| JPH0529897B2 true JPH0529897B2 (en) | 1993-05-06 |
Family
ID=18339745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2340728A Granted JPH03184059A (en) | 1990-11-30 | 1990-11-30 | Original press-contacting plate switching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03184059A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9100521B2 (en) | 2013-06-13 | 2015-08-04 | Canon Kabushiki Kaisha | Image reading apparatus and image forming apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6184392B2 (en) | 2014-11-08 | 2017-08-23 | キヤノン株式会社 | Image reading apparatus and image forming apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60263935A (en) * | 1984-06-13 | 1985-12-27 | Kato Denki Kk | Opening and closing device for original press-contacting plate |
-
1990
- 1990-11-30 JP JP2340728A patent/JPH03184059A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60263935A (en) * | 1984-06-13 | 1985-12-27 | Kato Denki Kk | Opening and closing device for original press-contacting plate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9100521B2 (en) | 2013-06-13 | 2015-08-04 | Canon Kabushiki Kaisha | Image reading apparatus and image forming apparatus |
| US9432534B2 (en) | 2013-06-13 | 2016-08-30 | Canon Kabushiki Kaisha | Image reading apparatus and image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03184059A (en) | 1991-08-12 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |