JP3194632B2 - Document pressure plate opening and closing device - Google Patents

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】この発明は、印刷機や複写機等の
原稿圧着板開閉装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an original cover opening / closing device for a printing machine or a copying machine.

【０００２】[0002]

【従来の技術】従来、複写機等の本体側に取付部材を取
り付け、この取付部材に原稿圧着板の開閉方向と同一方
向へ回転するようにヒンジピンを介して枢着させた支持
部材を設け、この支持部材と前記取付部材との間に該支
持部材を開方向へ付勢する圧縮コイルスプリングを設
け、前記支持部材の自由端側に該支持部材とは反対方向
へ回転するようにリフト部材をピンを介して軸着させ、
このリフト部材に原稿圧着板を取り付け、前記支持部材
とリフト部材との間に該リフト部材を前記支持部材と重
なる方向へ回動付勢させるトーションスプリングを設け
ると共に、前記圧縮コイルスプリングが座屈しないよう
に一対のスプリング保持部材を、前記取付部材と支持部
材にその一端部をかしめたりＥリングを用いるなどして
取り付けた支承ピンに軸承させて前記圧縮コイルスプリ
ングの上下に配置したものが公知である。2. Description of the Related Art Conventionally, a mounting member is attached to a main body of a copying machine or the like, and a support member pivotally attached to the mounting member via a hinge pin so as to rotate in the same direction as the opening and closing direction of the original cover is provided. A compression coil spring for urging the support member in the opening direction is provided between the support member and the mounting member, and a lift member is provided on a free end side of the support member so as to rotate in a direction opposite to the support member. Axle via pin,
A document pressing plate is attached to the lift member, and a torsion spring is provided between the support member and the lift member to bias the lift member in a direction overlapping with the support member, and the compression coil spring does not buckle. It is known that a pair of spring holding members are arranged above and below the compression coil spring by being supported on a support pin attached to the mounting member and the support member by crimping one end thereof or using an E-ring. is there.

【０００３】また、上述したような構成のリフト部材や
制御部材を省略して、複写機等の本体側へ取り付けられ
る取付部材と、この取付部材に原稿圧着板の開閉方向と
同一方向へ回転するようにヒンジピンを介してその一端
部を軸着させた支持部材と、前記取付部材のヒンジピン
とは異なる位置と前記支持部材の自由端側とに一端部を
かしめたり、或はＥリングを用いることにより、使用中
に抜け出ないように取り付けた一対の支承ピンと、この
各々の支承ピンに端部を軸承させた一対のスプリング保
持部材と、この一対のスプリング保持部材の間に弾設さ
せた圧縮コイルスプリングとで構成したものも公知であ
る。Further, the lifting member and the control member having the above-described configuration are omitted, and an attachment member attached to the main body of a copying machine or the like, and the attachment member is rotated in the same direction as the opening / closing direction of the original cover. A supporting member having one end pivotally attached thereto via a hinge pin, and one end portion caulked at a position different from the hinge pin of the mounting member and a free end side of the supporting member, or an E-ring is used. A pair of support pins attached so as not to come out during use, a pair of spring holding members having end portions supported by the respective support pins, and a compression coil elastically provided between the pair of spring holding members. A spring and a spring are also known.

【０００４】[0004]

【発明が解決すべき課題】これらの従来公知の開閉装置
のうち先のものは、原稿圧着板が重量のあるものの場合
には、強くトルクを持つトーションスプリングを必要と
し、リフト部材を反転させる際に強い操作力を必要とし
操作性に問題がある上に、構造が複雑であり、部品点数
が多く製作コストが高くつくという問題があった。ま
た、両者の開閉装置とも支承ピンを取付部材や支持部材
に取り付けるに当り、かしめたりＥリングを用いること
からその分だけ部品代や加工賃が掛かるという問題があ
った。The prior art opening and closing device of the prior art requires a torsion spring having a strong torque when the original cover is heavy. In addition to this, there is a problem in that a strong operation force is required, the operability is problematic, and the structure is complicated, the number of parts is large, and the production cost is high. In addition, both of the opening and closing devices have a problem in that when mounting the support pin to the mounting member or the support member, caulking or the use of an E-ring increase the cost of parts and processing.

【０００５】この発明の目的は、可及的に構造を簡単に
して製作コストを下げ、しかも機能を向上させた複写機
等の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 opening / closing device for a manuscript crimping plate for a copying machine or the like in which the structure is simplified as much as possible to reduce the manufacturing cost and the function is improved.

【０００６】[0006]

【課題を解決するための手段】上述した目的を達成する
ためにこの発明は、複写機等の装置本体側へ取り付けら
れる取付部材と、この取付部材に原稿圧着板の開閉方向
と同一方向へ回転するようにヒンジピンを介してその一
端部を軸着させた支持部材と、この支持部材の自由端側
へ前記原稿圧着板の開閉方向とは逆の方向へ回転するよ
うに支軸を介して一端部を軸着させたリフト部材と、前
記支軸の略中央部に支点を越えた一端部を当接して回動
可能に軸着されその回動支点を越えた一端部を前記リフ
ト部材に係止させた制御部材と、この制御部材を挟んで
左右に前記支軸に環巻きされつつ前記支持部材と制御部
材との間に配設された一対のトーションスプリングと、
前記取付部材及び制御部材のヒンジピンと支軸とは異な
る位置に取り付けた一対の支承ピンと、この各々の支承
ピンに端部を軸承させ互いを嵌縮自在と成した一対のス
プリング保持部材と、この一対のスプリング保持部材の
間に弾設させた圧縮コイルスプリングとで構成し、この
圧縮コイルスプリングを互いに嵌縮動作する一対のスプ
リング保持部材で保持すると共に、このスプリング保持
部材の一方を前記支軸を支点に前記リフト部材と共に旋
回する支承ピンに軸承させ、他方を前記取付部材の両側
板に前記ヒンジピンとは異なる位置に設けた一対の切欠
に軸承させ、前記支承ピンの一方或は双方を中央部に周
溝を設けた形状とし、前記スプリング保持部材に前記周
溝に嵌入する突部を設けるものである。 SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention relates to an apparatus mounted on an apparatus body such as a copying machine.
Mounting member, and the opening and closing direction of the original cover
One through the hinge pin to rotate in the same direction as
A support member having its end portion pivotally mounted, and a free end side of the support member
To rotate in the direction opposite to the opening and closing direction of the original cover.
A lift member having one end pivotally mounted via a support shaft,
Rotate by contacting one end beyond the fulcrum to the approximate center of the support shaft
At one end, the shaft is mounted so that it can be
Control member locked to the
The support member and the control unit are wound around the support shaft to the left and right.
A pair of torsion springs arranged between the material and
The hinge pin and the support shaft of the mounting member and the control member are different.
And a pair of bearing pins
A pair of swivels, each of which has its end supported by a pin and
A spring holding member and a pair of spring holding members.
It is composed of a compression coil spring
A pair of spurs that compress and compress the compression coil spring
While holding with the ring holding member, this spring holding
One of the members is pivoted with the lift member around the support shaft.
Rotate the bearing pin to the bearing, the other side of the mounting member
A pair of notches provided on the plate at positions different from the hinge pins
And one or both of the bearing pins are wrapped around the center.
The spring holding member has a circumferential shape.
A projection that fits into the groove is provided.

【０００７】その際にこの発明は、前記一対の支承ピン
の一方或は双方を両端部に小径部を設けた形状とし、こ
の小径部を前記取付部材或は支持部材に軸支させること
ができる。 At this time, the present invention provides the above-mentioned pair of bearing pins.
Either or both of them have a shape with small diameter portions at both ends.
The small diameter portion of the above is supported by the mounting member or the supporting member.
Can be.

【０００８】[0008]

【作用】原稿圧着板を開くと、取付部材と支持部材との
間に弾設した圧縮コイルスプリングの弾力によりその重
量を減殺された状態で軽く開かれ、スプリングの弾力と
原稿圧着板の重量がバランスしたところで手を離すと原
稿圧着板はその位置で停止する。その際に、リフト部材
はトーションスプリングと圧縮コイルスプリングの各弾
力の合力によって支持部材と重なり合う方向へ回動を付
勢されているので、開いた原稿圧着板の重量によって反
転してしまうことはない。原稿が本のように厚い立体原
稿の場合には、開いた原稿圧着板を閉じて立体原稿の端
部へ当接させ、さらに若干力を加えて閉じると、リフト
部材がトーションスプリングと圧縮コイルスプリングの
付勢力に抗して支軸を支点に回転し、原稿圧着板でもっ
て立体原稿の上面を水平方向に覆うことができるもので
ある。When the original cover is opened, it is opened lightly with its weight reduced by the elasticity of the compression coil spring elastically provided between the mounting member and the support member, and the elasticity of the spring and the weight of the original cover are reduced. When the hand is released when the balance is reached, the original cover stops at that position. At this time, since the lift member is urged to rotate in a direction overlapping with the support member by the combined force of the respective elastic forces of the torsion spring and the compression coil spring, the lift member does not reverse due to the weight of the opened original cover. . When the original is a thick three-dimensional original such as a book, close the open original cover and bring it into contact with the end of the three-dimensional original, and apply a slight force to close the original. The support shaft rotates about the support shaft against the urging force of the above, and the upper surface of the three-dimensional original can be covered in the horizontal direction by the original cover.

【０００９】他方、支承ピンの相方或は一方を中央部に
周溝を設けたり、両端部を小径にしたりする形状にし、
周溝には突部を嵌入させたり、小径部の部分を軸承させ
るようにすると、支承ピンの端部をかしめたり、或はＥ
リングを用いずとも支承ピンが取付部材や支持部材より
抜け出て来てしまうことはない。On the other hand, either or one of the bearing pins is provided with a circumferential groove at the center, or both ends are reduced in diameter.
When a protrusion is fitted into the circumferential groove or a small diameter portion is supported, the end of the support pin is swaged or E
Even without using the ring, the bearing pin does not come out of the mounting member or the support member.

【００１０】[0010]

【実施例】図面はこの発明の一実施例を示し、図１乃至
図６において複写機の装置本体Ａの後部アッパープレー
トａ上には、両側板１ａ、１ａを有する取付部材１が取
り付けられている。尚、この取付部材１は後部アッパー
プレートａ上にビス等により固着されても良いが、後部
アッパープレートａと一体に構成されても良い。この取
付部材１の両側板１ａ、１ａの一側には、ヒンジピン２
を介して支持部材３がその両側板３ａ、３ａの一端部を
回動自在に軸着させている。この支持部材３の両側板３
ａ、３ａの自由端側にはリフト部材４が両側板４ａ、４
ａを支軸５によって回動自在に軸着させており、このリ
フト部材４に原稿圧着板Ｂの後端部が固着されている。
尚、このリフト部材４は原稿圧着板Ｂと一体に構成され
ても良い。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a copying machine according to an embodiment of the present invention; FIG. I have. The mounting member 1 may be fixed on the rear upper plate a with screws or the like, or may be integrally formed with the rear upper plate a. A hinge pin 2 is provided on one side of both side plates 1a, 1a of the mounting member 1.
The support member 3 rotatably pivotally attaches one end of the both side plates 3a, 3a. Both side plates 3 of this support member 3
A lift member 4 is provided on both sides 4a, 4a
a is rotatably mounted on a support shaft 5, and the rear end of the original cover B is fixed to the lift member 4.
The lift member 4 may be formed integrally with the original cover B.

【００１１】支軸５の略中央部には制御部材６がその両
側板６ａ、６ａに設けた挿通孔６ｃ、６ｃを軸着させて
回動自在に取り付られており、両側板６ａ、６ａの上部
はとくに図２に示したようにリフト部材４の頂板４ｂに
設けた切欠４ｃ、４ｃに係止されている。この制御部材
６の両側には該制御部材６を挟んで一対のトーションス
プリング７、７が支軸５に環巻きされつつ配置され、支
持部材３と制御部材６の間に弾設されている。このトー
ションスプリング７、７によって制御部材６はリフト部
材４と共に常に時計方向へ回動付勢されている。取付部
材１と制御部材６の各両側板１ａ、１ａ・６ａ、６ａに
は、図１と図５に示したように、ヒンジピン３と支軸５
の取付位置とは異なる位置より切り込みがつけられて切
欠１ｂ、１ｂ（一方のみ表示）・６ｂ、６ｂが形成され
ている。このうち切欠１ｂ、１ｂには、とくに図４に示
したように中央部に周溝９ａを設けた支承ピン９が軸架
され、切欠６ｂ、６ｂには支承ピン１０が両端部の小径
部１０ａ、１０ａを軸架させている。A control member 6 is rotatably attached to a substantially central portion of the support shaft 5 by pivotally inserting through holes 6c, 6c provided in both side plates 6a, 6a. The upper part is locked by notches 4c, 4c provided on the top plate 4b of the lift member 4, as shown in FIG. A pair of torsion springs 7 are arranged on both sides of the control member 6 while being wound around the support shaft 5 with the control member 6 interposed therebetween, and are elastically provided between the support member 3 and the control member 6. The control member 6 is always urged to rotate clockwise together with the lift member 4 by the torsion springs 7. As shown in FIGS. 1 and 5, hinge pins 3 and support shafts 5 are provided on both side plates 1a, 1a, 6a and 6a of the mounting member 1 and the control member 6, respectively.
The notches 1b, 1b (only one is displayed) and 6b, 6b are formed by making cuts from positions different from the mounting positions. A support pin 9 provided with a peripheral groove 9a at the center as shown in FIG. 4 is mounted on the notches 1b and 1b, and a support pin 10 is provided with small diameter portions 10a at both ends in the notches 6b and 6b. , 10a.

【００１２】各支承ピン９、１０には互いに嵌合してい
るスプリング保持部材１１、１２が各軸受部１１ａ、１
２ａを軸受けさせており、このスプリング保持部材１
１、１２内部には一対の圧縮コイルスプリング１３、１
３が弾設されている。スプリング保持部材のうち指示記
号１２の方は鉄板製でありその軸受部１２ａはとくに図
６に示したように合成樹脂製である。この軸受部１２ａ
は一対の脚部１２ｂ、１２ｂと軸受溝１２ｃを有し、脚
部１２ｂ、１２ｂをスプリング保持部材１２へ係止させ
る構成になっている。スプリング保持部材１１は合成樹
脂製であり、とくに図４に示したように、軸受溝１１ｄ
を有する軸受部１１ａの中央部に突部１１ｂが設けられ
ており、この突部１１ｂは支承ピン９の周溝９ａへ嵌入
し、支承ピン９の左右への摺動を阻止している。A spring holding member 11, 12 fitted to each bearing pin 9, 10 has a bearing 11a, 1
2a, and the spring holding member 1
A pair of compression coil springs 13, 1
3 are provided. The indication symbol 12 of the spring holding member is made of an iron plate, and its bearing portion 12a is made of a synthetic resin as shown in FIG. This bearing portion 12a
Has a pair of legs 12b, 12b and a bearing groove 12c, and is configured to lock the legs 12b, 12b to the spring holding member 12. The spring holding member 11 is made of a synthetic resin, and particularly, as shown in FIG.
A projection 11b is provided at the center of the bearing portion 11a having a protrusion. The projection 11b fits into the peripheral groove 9a of the support pin 9 to prevent the support pin 9 from sliding left and right.

【００１３】図７はこの発明に係る原稿圧着板開閉装置
の使用例を示し、原稿が本のような厚い立体原稿１４の
場合には、原稿圧着板Ｂを閉じて立体原稿１４の端部に
当接したところでさらに原稿圧着板Ｂを下押しすると、
該原稿圧着板Ｂは立体原稿１４の端部を支点に制御部材
６及びリフト部材４を介して時計方向へ回動付勢させて
いる捩じりコイルスプリング７、７と圧縮コイルスプリ
ング１３、１３の弾力に抗して反時計方向へ回転し、立
体原稿１４上面を水平状態で覆うことができるものであ
る。FIG. 7 shows an example of use of the original cover opening / closing apparatus according to the present invention. When the original is a thick three-dimensional original 14 such as a book, the original cover B is closed and the end of the three-dimensional original 14 is closed. When the original pressure plate B is further pressed down when it touches,
The original cover B is torsion coil springs 7, 7 and compression coil springs 13, 13 which are urged clockwise through the control member 6 and the lift member 4 about the end of the three-dimensional original 14 as a fulcrum. Is rotated in the counterclockwise direction against the elasticity of the solid document 14 so that the upper surface of the three-dimensional document 14 can be covered in a horizontal state.

【００１４】この発明に係る支承ピンは、以上のように
説明した原稿圧着板開閉装置以外の公知構成のものにも
実施できる。この公知構成の原稿圧着板開閉装置とは図
示は省略するが例えば次のような構成のものである。The bearing pin according to the present invention can be implemented in a known configuration other than the original cover opening / closing device described above. Although not shown in the drawings, the known document pressing plate opening / closing device has the following configuration, for example.

【００１５】複写機等の本体側へ取り付けられる取付部
材と、この取付部材に原稿圧着板の開閉方向と同一方向
へ回転するようにヒンジピンを介してその一端部を軸着
させた支持部材と、前記取付部材のヒンジピンとは異な
る位置と前記支持部材の自由端側とに取り付けた一対の
支承ピンと、この各々の支承ピンに端部を軸承させた一
対のスプリング保持部材と、この一対のスプリング保持
部材の間に弾設させた圧縮コイルスプリングとで構成し
たものである。An attachment member attached to the main body of a copying machine or the like, a support member having one end pivotally attached to the attachment member via a hinge pin so as to rotate in the same direction as the opening / closing direction of the original cover; A pair of support pins mounted on a position different from the hinge pin of the mounting member and on a free end side of the support member, a pair of spring holding members having their respective ends supported by the respective support pins, and a pair of spring holding members The compression coil spring is provided between the members.

【００１６】この発明はこの公知構成の装置において、
前記一対の支承ピンの一方或は双方を中央部に周溝を設
けた形状とし、前記スプリング保持部材に前記周溝に嵌
入する突部を設けたり、或は前記一対の支承ピンの一方
或は双方を両端部に小径部を設けた形状とし、この小径
部を前記取付部材或は支持部材に軸支させるものであ
る。The present invention relates to an apparatus of this known construction,
One or both of the pair of support pins have a shape in which a peripheral groove is provided at a central portion, and a projection that fits into the peripheral groove is provided on the spring holding member, or one or both of the pair of support pins are provided. Both have a shape in which a small diameter portion is provided at both ends, and this small diameter portion is pivotally supported by the mounting member or the support member.

【００１７】[0017]

【発明の効果】この発明は以上のように構成したので次
のような効果を奏し得る。As described above, the present invention has the following advantages.

【００１８】請求項１のように構成すると、原稿圧着板
の反転、自動復帰を制御する付勢手段として圧縮コイル
スプリングとトーションスプリングとの合成弾力を用い
ることから、原稿圧着板の反転、自動復帰動作がスムー
ズとなり操作性が著しく向上させることができる上に、
立体原稿に対してその上面を原稿圧着板で水平に覆わし
めるための構成が簡単となり、さらにとくに支承ピンの
取り付けが簡単となることから、製作コストを大幅に下
げることができ、故障も少なく歩止まりも高くなるもの
である。According to the first aspect of the present invention, since the combined elasticity of the compression coil spring and the torsion spring is used as the biasing means for controlling the inversion and automatic return of the original cover, the original cover is inverted and automatically returned. In addition to smooth operation, operability can be significantly improved,
The structure for covering the top surface of the three-dimensional original horizontally with the original pressure plate is simplified, and in particular, the support pin
Since the installation is simple, the production cost can be greatly reduced, and the number of failures is small and the yield is high.

【００１９】請求項２のように構成すると、請求項１と
同じ効果を奏した上で、かしめやＥリングの使用を省略
できて各支承ピンの取り付けが容易となり、部品点数や
工賃を省略できることから、さらに製作コストを下げる
ことができるものである。According to a second aspect of the present invention, the first and second aspects are provided.
With the same effect, the use of caulking and the use of E-rings can be omitted, and the mounting of each bearing pin becomes easy, and the number of parts and labor can be reduced, further reducing the manufacturing cost.
Is what you can do .

【図面の簡単な説明】[Brief description of the drawings]

【図１】この発明に係る原稿圧着板開閉装置の側面図で
ある。FIG. 1 is a side view of an original cover opening / closing device according to the present invention.

【図２】図１に係る原稿圧着板開閉装置の平面図であ
る。FIG. 2 is a plan view of the original cover pressing device according to FIG. 1;

【図３】図１に係る原稿圧着板開閉装置の側断面図であ
る。FIG. 3 is a side sectional view of the original cover pressing device according to FIG. 1;

【図４】図１に係る原稿圧着板開閉装置の平面断面図で
ある。FIG. 4 is a plan sectional view of the document pressing plate opening / closing device according to FIG. 1;

【図５】制御部材の斜視図である。FIG. 5 is a perspective view of a control member.

【図６】スプリング保持部材の軸受部の斜視図である。FIG. 6 is a perspective view of a bearing portion of the spring holding member.

【図７】この発明に係る原稿圧着板開閉装置の使用例を
示す説明図である。FIG. 7 is an explanatory view showing an example of use of the original cover pressing device according to the present invention.

【符号の説明】[Explanation of symbols]

Ａ 複写機等の本体 Ｂ 原稿圧着板 １ 取付部材 １ｂ 切欠 ２ ヒンジピン ３ 支持部材 ４ リフト部材 ５ 支軸 ６ 制御部材 ６ｂ 切欠 ７ トーションスプリング ９ 支承ピン ９ａ 周溝 １０ 支承ピン １０ａ 小径部 １１ スプリング保持部材 １１ｂ 突部 １２ スプリング保持部材 １３ 圧縮コイルスプリング A Body of Copying Machine, etc. B Original Crimping Plate 1 Attachment Member 1b Notch 2 Hinge Pin 3 Support Member 4 Lift Member 5 Support Shaft 6 Control Member 6b Notch 7 Torsion Spring 9 Support Pin 9a Peripheral Groove 10 Support Pin 10a Small Diameter Section 11 Spring Holding Member 11b Projection 12 Spring holding member 13 Compression coil spring

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 複写機等の装置本体側へ取り付けられる
取付部材と、この取付部材に原稿圧着板の開閉方向と同
一方向へ回転するようにヒンジピンを介してその一端部
を軸着させた支持部材と、この支持部材の自由端側へ前
記原稿圧着板の開閉方向とは逆の方向へ回転するように
支軸を介して一端部を軸着させたリフト部材と、前記支
軸の略中央部に支点を越えた一端部を当接して回動可能
に軸着されその回動支点を越えた一端部を前記リフト部
材に係止させた制御部材と、この制御部材を挟んで左右
に前記支軸に環巻きされつつ前記支持部材と制御部材と
の間に配設された一対のトーションスプリングと、前記
取付部材及び制御部材のヒンジピンと支軸とは異なる位
置に取り付けた一対の支承ピンと、この各々の支承ピン
に端部を軸承させ互いを嵌縮自在と成した一対のスプリ
ング保持部材と、この一対のスプリング保持部材の間に
弾設させた圧縮コイルスプリングとで構成し、この圧縮
コイルスプリングを互いに嵌縮動作する一対のスプリン
グ保持部材で保持すると共に、このスプリング保持部材
の一方を前記支軸を支点に前記リフト部材と共に旋回す
る支承ピンに軸承させ、他方を前記取付部材の両側板に
前記ヒンジピンとは異なる位置に設けた一対の切欠に軸
承させ、前記支承ピンの一方或は双方を中央部に周溝を
設けた形状とし、前記スプリング保持部材に前記周溝に
嵌入する突部を設けたことを特徴とする、原稿圧着板開
閉装置。 1. An apparatus which is attached to an apparatus body such as a copying machine.
The mounting member and the mounting member
Its one end through hinge pin to rotate in one direction
A support member having a shaft attached thereto, and a front end toward a free end side of the support member.
Rotate the cover in the opposite direction to the opening and closing direction of the original cover.
A lift member having one end pivotally mounted via a support shaft;
Rotation is possible by contacting one end beyond the fulcrum with the approximate center of the shaft
And one end beyond its pivot point is attached to the lift
A control member locked to the material and left and right
The support member and the control member while being wound around the support shaft.
A pair of torsion springs disposed between
The hinge pin and the support shaft of the mounting member and the control member are at different positions.
And a pair of bearing pins attached to the
A pair of splices whose ends are supported on each other
Between the spring holding member and the pair of spring holding members.
It is composed of a compression coil spring
A pair of springs that are fitted and retracted by coil springs
And a spring holding member.
Is pivoted together with the lift member about the support shaft as a fulcrum.
Bearing on the other side of the mounting member.
A pair of notches provided at positions different from the hinge pins
And one or both of the bearing pins have a circumferential groove in the center.
And the peripheral groove in the spring holding member.
An original cover is provided with a projection to be fitted.
Closing device. 【請求項２】 前記一対の支承ピンの一方或は双方を両
端部に小径部を設けた形状とし、この小径部を前記取付
部材或は支持部材に軸支させたことを特徴とする請求項
１に記載の原稿圧着板開閉装置。 2. One or both of said pair of bearing pins are both
The small diameter part is provided at the end, and this small diameter part is
A member or a supporting member is pivotally supported.
2. The document pressing plate opening and closing device according to 1.