JP2615165B2 - Automatic document feeder opening and closing mechanism - Google Patents
Automatic document feeder opening and closing mechanismInfo
- Publication number
- JP2615165B2 JP2615165B2 JP29849588A JP29849588A JP2615165B2 JP 2615165 B2 JP2615165 B2 JP 2615165B2 JP 29849588 A JP29849588 A JP 29849588A JP 29849588 A JP29849588 A JP 29849588A JP 2615165 B2 JP2615165 B2 JP 2615165B2
- Authority
- JP
- Japan
- Prior art keywords
- support member
- mounting hole
- main body
- document feeder
- automatic 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 - Lifetime
Links
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)
- Delivering By Means Of Belts And Rollers (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、複写機、ファクシミリ装置等の画像形成装
置に配設される自動原稿送り装置の開閉機構に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing mechanism of an automatic document feeder provided in an image forming apparatus such as a copying machine and a facsimile machine.
従来から、開閉自在な自動原稿送り装置(以下、ADF
という)を備えた複写機、ファクシミリ装置等の画像形
成装置が知られている。上記ADFの開閉機構として画像
形成装置本体への着脱が簡易に行えるように構成したも
のがある。Conventionally, an automatic document feeder that can be opened and closed (hereinafter ADF)
Image forming apparatuses such as a copying machine and a facsimile machine equipped with an image forming apparatus. There is an ADF opening / closing mechanism configured to be easily attached to and detached from the image forming apparatus main body.
このADFの開閉機構の構成について第5図、第6図に
示す側断面図を用いて説明すると、上記開閉機構1は本
体側支持部2、ADF側支持部3、およびバネ部材4から
なる。The configuration of the ADF opening / closing mechanism will be described with reference to side sectional views shown in FIGS. 5 and 6. The opening / closing mechanism 1 includes a main body-side support portion 2, an ADF-side support portion 3, and a spring member 4.
本体側支持部2は基台20、支柱部材22、支持軸23およ
び位置決め部材24からなり、支柱部材22は基台20の下部
に設けられ、この支柱部材22が画像形成装置本体5の取
付穴51に挿入されることによりADF6が本体5に装着され
る。支持軸23は基台20の後方に設けられ、下記ADF側支
持部3を回動自在に支持するものである。位置決め部材
24は基台20の前端から下方向に一定長だけ突出するよう
に固定されるとともに、位置決め部材24の下端部241が
本体5の上面52に当接され、この上面52と基台20とが一
定長の間隔を有するようになされている。The main body side support portion 2 includes a base 20, a support member 22, a support shaft 23, and a positioning member 24. The support member 22 is provided below the base 20, and the support member 22 is provided in a mounting hole of the image forming apparatus main body 5. The ADF 6 is attached to the main body 5 by being inserted into the 51. The support shaft 23 is provided behind the base 20 and rotatably supports the following ADF-side support portion 3. Positioning member
24 is fixed so as to protrude downward from the front end of the base 20 by a certain length, and the lower end 241 of the positioning member 24 abuts on the upper surface 52 of the main body 5. It has a constant length interval.
ADF側支持部3は上端部をADF6のカバー61の内壁に固
定されるとともに、上記支持軸23により基台20に支持さ
れ、ADF6が支持軸23を中心にして開くようになされてい
る。また、ADF側支持部3は、一端を切込部31に係止さ
れ、他端を本体側支持部2に係止された下記バネ部材4
により斜め上方向、すなわち、ADF6を開く方向に付勢さ
れている。そして、カバー61の前端に設けられた取手62
を、例えば、ADF6の重量に比べて比較的小さな力約1.5k
gW程度の力Fで持ち上げると、ADF6を開くことができる
ようにしている。The upper end of the ADF-side support portion 3 is fixed to the inner wall of the cover 61 of the ADF 6, and is supported by the base 20 by the support shaft 23, so that the ADF 6 is opened around the support shaft 23. The ADF-side support portion 3 has a spring member 4 having one end locked to the notch portion 31 and the other end locked to the main body-side support portion 2.
Is biased in a diagonally upward direction, that is, a direction in which the ADF 6 is opened. A handle 62 provided at the front end of the cover 61
A relatively small force, for example, about 1.5k compared to the weight of ADF6
The ADF6 can be opened by lifting it with a force F of about gW.
バネ部材4はコイルバネ41および係止部材42,43から
なり、カバー61側の係止部材43はコイルバネ41の一端を
係止するとともに、横手方向に突出軸44を有し、この突
出軸44により上記切込部31に係止される。一方、係止部
材42はコイルバネ41の他端を係止するとともに、横手方
向に突出軸45を有し、この突出軸45により係止部材42は
本体側支持部2に係止される。そして、コイルバネ41は
係止部材42,43により圧縮された状態で係止され、この
コイルバネ41のバネ力によりADF側支持部3は斜め上方
向に付勢される。また、ADF6が、例えば、60°〜70°の
角度に開いたときにコイルバネ41のバネ力とADF6の重量
とが釣合って上記角度で停止するようにコイルバネ41の
バネ力が設定されている。The spring member 4 includes a coil spring 41 and locking members 42 and 43. The locking member 43 on the cover 61 locks one end of the coil spring 41 and has a protruding shaft 44 in the lateral direction. The notch 31 locks. On the other hand, the locking member 42 locks the other end of the coil spring 41 and has a protruding shaft 45 in the lateral direction. The protruding shaft 45 locks the locking member 42 to the main body side support portion 2. The coil spring 41 is locked in a compressed state by the locking members 42 and 43, and the ADF-side support portion 3 is biased obliquely upward by the spring force of the coil spring 41. Further, the spring force of the coil spring 41 is set such that when the ADF 6 is opened at an angle of, for example, 60 ° to 70 °, the spring force of the coil spring 41 and the weight of the ADF 6 balance and stop at the above angle. .
ところが、上記自動原稿送り装置の開閉機構にあって
は、ADF6を閉じた状態ではコイルバネ41のバネ力により
係止部材42はコイルバネ41により斜め下方向に付勢さ
れ、支持軸23を支点にして反時計方向のモーメントが支
柱部材22にかかることになる。However, in the opening and closing mechanism of the automatic document feeder, when the ADF 6 is closed, the locking member 42 is urged obliquely downward by the coil spring 41 by the spring force of the coil spring 41, and the support shaft 23 is used as a fulcrum. A counterclockwise moment is applied to the column member 22.
そのうえ、本体5への装着を容易にするために支柱部
材22の前後の幅は取付穴51の内径よりも若干、例えば約
0.1mm程度小さく形成しているので、第7図に示すよう
に、支柱部材22は下端部222を取付穴51の後壁512の下部
に、さらに上端部224を取付穴51の前壁511の上部に圧接
されるように前方に向けて傾く。In addition, the width of the front and back of the support member 22 is slightly smaller than the inner diameter of the mounting hole 51, for example, about
As shown in FIG. 7, the support member 22 has a lower end portion 222 below the rear wall 512 of the mounting hole 51 and an upper end portion 224 of the front wall 511 of the mounting hole 51, as shown in FIG. Tilt forward to be pressed against the top.
このため、支柱部材22はADFに対して、前方に微小角
だけ傾く(以下、微小傾斜角という)ことになり、それ
ゆえ、ADF6は前方に押されて本体5に対して前方にず
れ、それに伴って本体5のプラテンガラス53に搬送され
る原稿も前方にずれることになる。Therefore, the support member 22 is tilted forward by a small angle with respect to the ADF (hereinafter, referred to as a small tilt angle). Therefore, the ADF 6 is pushed forward and shifts forward with respect to the main body 5, and Accordingly, the document conveyed to the platen glass 53 of the main body 5 is also shifted forward.
また、支柱部材22が前方に傾くことにより、開閉機構
1が若干開いた状態になり、このため、コイルバネ41の
バネ力によるADF側支持部3への上方向に付勢される力
が閉じた状態よりも強くなり、ADF6のカバー61が撓むと
いったことがある。Further, when the support member 22 is tilted forward, the opening / closing mechanism 1 is slightly opened, so that the upward biasing force on the ADF-side support portion 3 due to the spring force of the coil spring 41 is closed. It may be stronger than in the state, and the cover 61 of the ADF 6 may bend.
この対策として、第8図に示すように、支柱部材22の
後面223と取付穴51の後壁512とをビス54等を用いて固定
することが考えられるが、ビス54等を固定するための手
間および時間がかかりADF6の着脱を容易に行うことがで
きないとともに、ビス54等の部品点数が増えてコストが
かかるといった問題がある。As a countermeasure for this, as shown in FIG. 8, it is conceivable to fix the rear surface 223 of the support member 22 and the rear wall 512 of the mounting hole 51 using screws 54 or the like. Attaching and detaching the ADF 6 is difficult and time-consuming, and there is a problem that the number of parts such as the screws 54 increases and costs increase.
本発明は、上記問題を解消するもので、原稿をプラテ
ンガラスに正確に搬送することができる低コストの自動
原稿送り装置の開閉機構を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to solve the above problem and to provide a low-cost automatic document feeder opening / closing mechanism capable of accurately transporting a document to a platen glass.
上記目的を達成するために、本発明の請求項1では、
本体に対して垂直に形成された取付穴に支柱部材が挿入
されることにより該本体に装着されるとともに、コイル
バネにより上方向に付勢されつつ開閉される自動原稿送
り装置の開閉機構において、上記支柱部材と上記取付穴
との間に上記支柱部材の後面と上記取付穴の後壁、ある
いは上記支柱部材の前面と上記取付穴の前壁を圧接させ
る弾性部材を介在させたものである。In order to achieve the above object, in claim 1 of the present invention,
In the opening / closing mechanism of the automatic document feeder, which is mounted on the main body by inserting a support member into a mounting hole formed perpendicularly to the main body and opened and closed while being urged upward by a coil spring, An elastic member is interposed between the support member and the mounting hole to press the rear surface of the support member and the rear wall of the mounting hole, or the front surface of the support member and the front wall of the mounting hole.
また、請求項2では、本体の取付穴に支柱部材が挿入
されることにより該本体に装着されるとともに、コイル
バネにより上方向に付勢されつつ開閉される自動原稿送
り装置の開閉機構において、上記支柱部材の後面が上記
自動原稿送り装置に対して予め定めた勾配を有して形成
されるとともに、上記取付穴の後壁が上記本体に対して
上記予め定めた勾配より微小傾斜角だけ後方に傾けて形
成されたものである。According to a second aspect of the present invention, in the opening / closing mechanism of the automatic document feeder, which is mounted on the main body by inserting a support member into the mounting hole of the main body and opened and closed while being urged upward by a coil spring, The rear surface of the support member is formed with a predetermined gradient with respect to the automatic document feeder, and the rear wall of the mounting hole is rearward with respect to the main body by a slight tilt angle from the predetermined gradient. It is formed by tilting.
上記請求項1の構成よれば、支柱部材が本体の取付穴
に挿入されたときに、支柱部材の後面と上記取付穴の後
壁、あるいは上記支柱部材の前面と上記取付穴の前壁が
弾性部材により圧接され、支柱部材が本体に対して垂直
になる。According to the configuration of the first aspect, when the support member is inserted into the mounting hole of the main body, the rear surface of the support member and the rear wall of the mounting hole, or the front surface of the support member and the front wall of the mounting hole are elastic. The support members are pressed against each other so that the support members are perpendicular to the main body.
また、上記請求項2の構成によれば、支柱部材を後方
に微小傾斜角だけ傾けて取付穴に挿入すると、支柱部材
はコイルバネにより前方に微小傾斜角傾いて元の角度に
戻る。Further, according to the configuration of the second aspect, when the support member is inclined backward by a small inclination angle and inserted into the mounting hole, the support member is inclined forward by a small inclination angle by the coil spring and returns to the original angle.
第1図は本発明に係るADFの開閉機構の第1実施例を
示す側断面図である。なお、図中、第5図、第6図と同
一符号は同一物を示す。FIG. 1 is a side sectional view showing a first embodiment of an ADF opening / closing mechanism according to the present invention. In the drawings, the same reference numerals as those in FIGS. 5 and 6 denote the same components.
開閉機構1は本体側支持部2、ADF側支持部3および
バネ部材4からなる。The opening / closing mechanism 1 includes a main body side support part 2, an ADF side support part 3, and a spring member 4.
本体側支持部2は基台20、弾性部材としての板バネ21
を備えた支柱部材22、支持軸23および位置決め部材24か
らなり、支柱部材22は断面コの字状に形成され、その開
放部が前面221に向けられるとともに、挿入を容易にす
るために支柱部材22の前後の幅は取付穴51の内径よりも
若干、例えば約0.1mm程度小さく形成されている。板バ
ネ21は、例えば、断面U字状に形成されるとともに、凸
部が下方に向くように形成される。また、板バネ21の固
定部211が支柱部材22内の上部に固定される。板バネ21
の先端部には支柱部材22を取付穴51に円滑に着脱するた
めに円弧状に曲げて形成された端部212を有し、支柱部
材22が本体5の取付穴51に挿入されたときに端部212が
取付穴51の前壁511に圧接されるようになされている。The main body side supporting portion 2 includes a base 20, a leaf spring 21 as an elastic member.
The support member 22 includes a support member 23, a support shaft 23, and a positioning member 24.The support member 22 is formed in a U-shape in cross section, and the open portion thereof is directed to the front surface 221. The width before and after 22 is slightly smaller than the inner diameter of the mounting hole 51, for example, about 0.1 mm. The leaf spring 21 is formed, for example, in a U-shaped cross-section, and is formed such that the convex portion faces downward. Further, the fixing portion 211 of the leaf spring 21 is fixed to an upper portion inside the column member 22. Leaf spring 21
The end of the main body 5 has an end portion 212 formed by bending the support member 22 into an arc shape in order to smoothly attach and detach the support member 22 to and from the mounting hole 51. When the support member 22 is inserted into the mounting hole 51 of the main body 5, The end 212 is pressed against the front wall 511 of the mounting hole 51.
そして、板バネ21のバネ力が端部212を支点にして固
定部211に加わり、この固定部211を介して支柱部材22の
上部が後方に付勢され、さらに上述した反時計方向のモ
ーメントにより支柱部材22の下端部222が取付穴51の後
壁512の下部に圧接されるので、支柱部材22の後面223は
上記後壁512に沿うように圧接される。また、支柱部材2
2が挿入される取付穴51の前壁511および後壁512は本体
5の上面52に対して垂直に形成される。Then, the spring force of the leaf spring 21 is applied to the fixed portion 211 with the end portion 212 as a fulcrum, and the upper portion of the support member 22 is urged rearward through the fixed portion 211, and furthermore, the counterclockwise moment described above causes Since the lower end 222 of the support member 22 is pressed against the lower part of the rear wall 512 of the mounting hole 51, the rear surface 223 of the support member 22 is pressed along the rear wall 512. In addition, support member 2
The front wall 511 and the rear wall 512 of the mounting hole 51 into which 2 is inserted are formed perpendicular to the upper surface 52 of the main body 5.
したがって、支柱部材22は取付穴51に対して着脱容易
でありながら、コイルバネ41のバネ力によっても前方に
傾かないので、ADF6が前方にずれることはなく、さら
に、ADF6のカバー61の撓みが発生することもない。Therefore, while the support member 22 is easily detachable from the mounting hole 51, it does not tilt forward due to the spring force of the coil spring 41, so that the ADF 6 does not shift forward, and the cover 61 of the ADF 6 is bent. Nothing to do.
なお、板バネ21を取付穴51の前壁511に固定し、支柱
部材22が本体5の取付穴51に挿入されたときに支柱部材
22の前面221を圧接して後面223が後壁512に圧接される
ようにしてもよく、あるいは板バネ21を支柱部材22の後
面223もしくは取付穴51の後壁512に固定し、支柱部材22
の前面221が取付穴51の前壁511に圧接されるようにして
もよい。The leaf spring 21 is fixed to the front wall 511 of the mounting hole 51, and the support member 22 is inserted into the mounting hole 51 of the main body 5 when the support member 22 is inserted into the mounting hole 51.
The front surface 221 of the support 22 may be pressed against the rear surface 223 so that the rear surface 223 is pressed against the rear wall 512.
May be pressed against the front wall 511 of the mounting hole 51.
次に、本発明の第2実施例を第2図(a),(b),
(c)の側断面図を用いて説明する。本実施例は支柱部
材22の後面223を自動原稿送り装置に対して、例えば、
垂直に形成するとともに、取付穴51の後壁512を本体5
に対して、微小傾斜角だけ後方に傾けて形成したもので
ある。なお、以下の実施例では、支柱部材22の前後の幅
を取付穴51の内径よりも0.1mm程度小さく形成したとき
の微小傾斜角が1°になる場合について説明する。Next, a second embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to the side sectional view of FIG. In the present embodiment, the rear surface 223 of the support member 22 is attached to the automatic document feeder, for example,
It is formed vertically, and the rear wall 512 of the mounting hole 51 is
Is inclined backward by a small angle of inclination. In the following embodiment, a description will be given of a case where the minute inclination angle is 1 ° when the front and rear widths of the support member 22 are formed to be smaller than the inner diameter of the mounting hole 51 by about 0.1 mm.
すなわち、第2図(a)に示すように、支柱部材22の
後面223が本体側支持部2の基台20の底面201に対して垂
直に形成され、前面221は上記後面223に対して前方に傾
けられるとともに、その勾配が、例えば、2°に形成さ
れる。That is, as shown in FIG. 2 (a), the rear surface 223 of the support member 22 is formed perpendicular to the bottom surface 201 of the base 20 of the main body side support portion 2, and the front surface 221 is located forward with respect to the rear surface 223. And the gradient is formed, for example, at 2 °.
一方、第2図(b)に示すように、取付穴51の前壁51
1が前方に傾けられるとともに、本体5の上面52の垂直
方向に対して、例えば、1°の勾配が形成される。ま
た、後壁512は後方に傾けられるとともに、上面52の垂
直方向に対して1°の勾配が形成される。On the other hand, as shown in FIG.
1 is inclined forward, and a gradient of, for example, 1 ° is formed with respect to the vertical direction of the upper surface 52 of the main body 5. The rear wall 512 is tilted rearward, and forms a gradient of 1 ° with respect to the vertical direction of the upper surface 52.
すなわち、上記構成では、第2図(c)に示すよう
に、支柱部材22が取付穴51に挿入されると、本体側支持
部2の基台20は後方に1°傾いた状態になる。そして、
この状態でADF6を閉じると、支持軸23を支点とする反時
計方向のモーメントにより、支柱部材22は前方に1°傾
いて元の角度に戻る。このため、ADF6は前方にずれるこ
とはなく、さらに、ADF6のカバー61の撓みが発生するこ
ともない。That is, in the above configuration, as shown in FIG. 2 (c), when the support member 22 is inserted into the mounting hole 51, the base 20 of the main body side support 2 is inclined backward by 1 °. And
When the ADF 6 is closed in this state, a counterclockwise moment about the support shaft 23 causes the support member 22 to lean forward by 1 ° and return to the original angle. Therefore, the ADF 6 does not shift forward, and the cover 61 of the ADF 6 does not bend.
なお、上記支柱部材22の前面221および取付穴51の壁5
11,512の各勾配は支柱部材22の幅を取付穴51の内径より
も約0.1mm程度小さく形成したときの角度であり、取付
穴51と支柱部材22との間隙およびその長さに応じて適
宜、変更される。The front surface 221 of the support member 22 and the wall 5 of the mounting hole 51
Each slope of 11,512 is an angle when the width of the support member 22 is formed about 0.1 mm smaller than the inner diameter of the mounting hole 51, and appropriately according to the gap between the mounting hole 51 and the support member 22 and the length thereof, Be changed.
次に、本発明の第3実施例を第3図(a),(b),
(c)の側断面図を用いて説明する。本実施例は支柱部
材22の後面223を自動原稿送り装置に対して、例えば、
1°だけ後方に傾けて形成するとともに、取付穴51の後
壁512を本体5に対して、例えば、2°だけ後方に傾け
て形成したものである。Next, a third embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to the side sectional view of FIG. In the present embodiment, the rear surface 223 of the support member 22 is attached to the automatic document feeder, for example,
The rear wall 512 of the mounting hole 51 is formed to be inclined backward by, for example, 2 ° with respect to the main body 5 while being formed to be inclined backward by 1 °.
すなわち、第3図(a)に示すように、支柱部材22の
前面221は基台20の底面201の垂直方向に対して前方に傾
けられるとともに、上記垂直方向に対して、例えば、1
°の勾配が形成される。また、後面223も上記垂直方向
に対して後方に傾けられるとともに、その勾配が1°に
形成される。That is, as shown in FIG. 3 (a), the front surface 221 of the support member 22 is inclined forward with respect to the vertical direction of the bottom surface 201 of the base 20, and at the same time, for example,
A gradient of ° is formed. The rear surface 223 is also inclined backward with respect to the vertical direction, and the inclination is formed at 1 °.
一方、第3図(b)に示すように、取付穴51の前壁51
1は本体5の上面52に対して、例えば、垂直に形成され
る。また、後壁512は後方に傾けられるとともに、上面5
2の垂直方向に対して2°の勾配が形成される。On the other hand, as shown in FIG.
1 is formed, for example, perpendicular to the upper surface 52 of the main body 5. Also, the rear wall 512 is tilted rearward, and the upper surface 5
A gradient of 2 ° is formed with respect to two vertical directions.
すなわち、上記構成でも、第3図(c)に示すよう
に、支柱部材22は取付穴51に挿入されると後方に1°傾
く。この状態でADF6を閉じると、コイルバネ41のバネ力
により支柱部材22は前方に1°傾いて元の角度に戻る。
したがって、ADF6は前方にずれることはなく、さらに、
ADF6のカバー61の撓みが発生することもない。That is, even in the above configuration, as shown in FIG. 3 (c), when the support member 22 is inserted into the mounting hole 51, it tilts backward by 1 °. When the ADF 6 is closed in this state, the support member 22 is inclined forward by 1 ° and returns to the original angle by the spring force of the coil spring 41.
Therefore, ADF6 does not shift forward,
The bending of the cover 61 of the ADF 6 does not occur.
なお、上記各勾配も取付穴51と支柱部材22との間隙お
よびその長さに応じて適宜、変更される。In addition, each of the above-mentioned gradients is appropriately changed according to the gap between the mounting hole 51 and the support member 22 and the length thereof.
次に、本発明の第4実施例を第4図(a),(b),
(c)の側断面図を用いて説明する。本実施例は支柱部
材22の後面223を自動原稿送り装置に対して、例えば、
1°だけ前方に傾けて形成するとともに、取付穴51の後
壁512を本体5に対して、例えば、垂直に形成したもの
である。Next, a fourth embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to the side sectional view of FIG. In the present embodiment, the rear surface 223 of the support member 22 is attached to the automatic document feeder, for example,
It is formed to be inclined forward by 1 °, and the rear wall 512 of the mounting hole 51 is formed, for example, perpendicular to the main body 5.
すなわち、第4図(a)に示すように、例えば、支柱
部材22の前面221は基台20の底面201の垂直方向に対して
前方に傾けられるとともに、上記垂直方向に対して、例
えば、3°の勾配が形成される。また、後面223も上記
垂直方向に対して前方に傾けられるとともに、その勾配
が1°に形成される。That is, as shown in FIG. 4A, for example, the front surface 221 of the support member 22 is inclined forward with respect to the vertical direction of the bottom surface 201 of the base 20, and at the same time, for example, A gradient of ° is formed. The rear surface 223 is also inclined forward with respect to the vertical direction, and has a gradient of 1 °.
一方、第4図(b)に示すように、取付穴51の前壁51
1は前方に傾けられるとともに、上面52の垂直方向に対
して、例えば、2°の勾配が形成される。また、後壁51
2は上面52に垂直に形成される。On the other hand, as shown in FIG.
1 is tilted forward, and a gradient of, for example, 2 ° is formed with respect to the vertical direction of the upper surface 52. Also, the back wall 51
2 is formed perpendicular to the upper surface 52.
すなわち、上記構成でも、第4図(c)に示すよう
に、支柱部材22は取付穴51に挿入されると後方に1°傾
く。この状態でADF6を閉じると、コイルバネ41のバネ力
により支柱部材22は前方に1°傾いて元の角度に戻る。
したがって、ADF6は前方にずれることはなく、さらに、
ADF6のカバー61の撓みが発生することもない。That is, even in the above configuration, as shown in FIG. 4 (c), when the support member 22 is inserted into the mounting hole 51, it tilts backward by 1 °. When the ADF 6 is closed in this state, the support member 22 is inclined forward by 1 ° and returns to the original angle by the spring force of the coil spring 41.
Therefore, ADF6 does not shift forward,
The bending of the cover 61 of the ADF 6 does not occur.
なお、上記各勾配も取付穴51と支柱部材22との間隙お
よびその長さに応じて適宜、変更される。In addition, each of the above-mentioned gradients is appropriately changed according to the gap between the mounting hole 51 and the support member 22 and the length thereof.
本発明の請求項1によれば、支柱部材が本体の取付穴
に挿入されたときに、支柱部材の後面と上記取付穴の後
壁、あるいは上記支柱部材の前面と上記取付穴の前壁を
圧接することにより、支柱部材がコイルバネのバネ力に
より前方に傾くのを防止することができるので、自動原
稿送り装置が取付穴に対して着脱容易でありながら、自
動原稿送り装置を閉じたときに該自動原稿送り装置が本
体に対してずれることを防止することができ、原稿をプ
ラテンガラスに正確に搬送することができる。また、自
動原稿送り装置を着実に閉じることができるので、コイ
ルバネのバネ力による自動原稿送り装置の撓みの発生を
防止することができる。According to the first aspect of the present invention, when the support member is inserted into the mounting hole of the main body, the rear surface of the support member and the rear wall of the mounting hole, or the front surface of the support member and the front wall of the mounting hole are connected. By pressing, the support member can be prevented from tilting forward due to the spring force of the coil spring, so that the automatic document feeder can be easily attached to and detached from the mounting hole, but when the automatic document feeder is closed. The automatic document feeder can be prevented from being shifted from the main body, and the document can be accurately conveyed to the platen glass. Further, since the automatic document feeder can be closed steadily, it is possible to prevent the automatic document feeder from being bent by the spring force of the coil spring.
また、請求項2によれば、本体の取付穴に支柱部材が
後方に微小傾斜角だけ傾けて挿入されたのち、コイルバ
ネのバネ力により支柱部材が前方に微小傾斜角だけ傾い
て元の角度に戻り、原稿をプラテンガラスに正確に搬送
することができる。また、コイルバネのバネ力による自
動原稿送り装置の撓みの発生を防止することができる。
さらに、支柱部材の面の勾配および取付穴の壁の勾配は
支柱部材もしくは取付穴の製造用の金型を適宜に設計す
ることで形成できるので、部品点数を増加させることが
ない。According to the second aspect, after the support member is inserted backward into the mounting hole of the main body at a slight inclination angle, the support member is inclined forward by a small inclination angle by the spring force of the coil spring to return to the original angle. Returning, the original can be accurately conveyed to the platen glass. Further, it is possible to prevent the automatic document feeder from being bent by the spring force of the coil spring.
Furthermore, since the slope of the surface of the support member and the slope of the wall of the mounting hole can be formed by appropriately designing a mold for manufacturing the support member or the mounting hole, the number of parts is not increased.
第1図は本発明に係る自動原稿送り装置の開閉機構の第
1実施例を示す側断面図、第2図(a),(b),
(c)は本発明の第2実施例を示す側断面図、第3図
(a),(b),(c)は本発明の第3実施例を示す側
断面図、第4図(a),(b),(c)は本発明の第4
実施例を示す側断面図、第5図,第6図は従来の自動原
稿送り装置の開閉機構の構成を示す側断面図、第7図,
第8図は従来の自動原稿送り装置の開閉機構の課題を説
明するための側断面図である。 1……開閉機構、2……本体側支持部、5……本体、20
……基台、21……板バネ、22……支柱部材、24……位置
決め部材、51……取付穴、52……上面、201……底面、2
21……前面、223……後面、511……前壁、512……後
壁。FIG. 1 is a sectional side view showing a first embodiment of an opening / closing mechanism of an automatic document feeder according to the present invention, and FIGS.
(C) is a side sectional view showing a second embodiment of the present invention, FIGS. 3 (a), (b) and (c) are side sectional views showing a third embodiment of the present invention, and FIG. ), (B) and (c) correspond to the fourth embodiment of the present invention.
5 and 6 are side sectional views showing the structure of an opening / closing mechanism of a conventional automatic document feeder, and FIGS.
FIG. 8 is a side sectional view for explaining the problem of the opening / closing mechanism of the conventional automatic document feeder. 1 Opening / closing mechanism, 2 Main body side support, 5 Main body, 20
... Base, 21 ... leaf spring, 22 ... support member, 24 ... positioning member, 51 ... mounting hole, 52 ... top surface, 201 ... bottom surface, 2
21 ... front, 223 ... rear, 511 ... front wall, 512 ... rear wall.
Claims (2)
柱部材が挿入されることにより該本体に装着されるとと
もに、コイルバネにより上方向に付勢されつつ開閉され
る自動原稿送り装置の開閉機構において、上記支柱部材
と上記取付穴との間に上記支柱部材の後面と上記取付穴
の後壁、あるいは上記支柱部材の前面と上記取付穴の前
壁を圧接させる弾性部材を介在させたことを特徴とする
自動原稿送り装置の開閉機構。An automatic document feeder is mounted on a main body by inserting a support member into a mounting hole formed perpendicular to the main body, and is opened and closed while being urged upward by a coil spring. In the opening / closing mechanism, an elastic member that presses the rear surface of the support member and the rear wall of the mount hole or the front surface of the support member and the front wall of the mount hole is interposed between the support member and the mounting hole. An opening / closing mechanism for an automatic document feeder.
により該本体に装着されるとともに、コイルバネにより
上方向に付勢されつつ開閉される自動原稿送り装置の開
閉機構において、上記支柱部材の後面が上記自動原稿送
り装置に対して予め定めた勾配を有して形成されるとと
もに、上記取付穴の後壁が上記本体に対して上記予め定
めた勾配より微小傾斜角だけ後方に傾けて形成されたこ
とを特徴とする自動原稿送り装置の開閉機構。2. An opening / closing mechanism of an automatic document feeder which is mounted on a main body by being inserted into a mounting hole of the main body and is opened / closed while being urged upward by a coil spring. The rear surface is formed with a predetermined gradient with respect to the automatic document feeder, and the rear wall of the mounting hole is tilted rearward by a small tilt angle with respect to the main body with respect to the predetermined gradient. An opening and closing mechanism for an automatic document feeder, wherein the opening and closing mechanism is formed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29849588A JP2615165B2 (en) | 1988-11-26 | 1988-11-26 | Automatic document feeder opening and closing mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29849588A JP2615165B2 (en) | 1988-11-26 | 1988-11-26 | Automatic document feeder opening and closing mechanism |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02144529A JPH02144529A (en) | 1990-06-04 |
JP2615165B2 true JP2615165B2 (en) | 1997-05-28 |
Family
ID=17860451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP29849588A Expired - Lifetime JP2615165B2 (en) | 1988-11-26 | 1988-11-26 | Automatic document feeder opening and closing mechanism |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2615165B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3623464B2 (en) * | 2001-06-08 | 2005-02-23 | シャープ株式会社 | Document reading apparatus and image forming apparatus incorporating the same |
-
1988
- 1988-11-26 JP JP29849588A patent/JP2615165B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH02144529A (en) | 1990-06-04 |
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