この従来公知の原稿圧着板開閉装置Ｉは、図１３に示したように、装置本体ａ側へその取付ベース３０ａを取り付ける取付部材３０と、この取付部材３０の両側板３０ｂへその両側板３１ｂをヒンジピン３２を介して回転可能に連結した支持部材３１と、この支持部材３１の両側板３１ｂの自由端側へその両側板３４ｂを連結ピン３７を介して、支持部材３１とは異なる方向へ回転可能となるように軸着したところの、原稿圧着板Ｋを取り付けるリフト部材３４と、取付部材３０の両側板３０ｂ間に差し渡して設けた受圧部材４０と、この受圧部材４０にカム部４１ａを当接させて前記支持部材３１内部に摺動可能に収装されたカムスライダー４１と、リフト部材３４の両側板３４ｂ間に設けた作動部材３８と、この作動部材３８に当接させて支持部材３１内部に摺動可能に収装されたスプリング受け部材３９と、支持部材３１内部に収装され、カムスライダー４１とスプリング受け部材３９との間に弾設させることにより、前記リフト部材３４を支持部材３１と重なり合う方向へ回転付勢させつつ、支持部材３１を少なくとも原稿圧着板Ｋの開成方向へ付勢させる弾性手段３３とで構成されており、取付部材の後板３０ｃには一対のストッパー片３５ａを有するストッパープレート３５が取付ネジ３６で取り付けられている。
このように構成することによって、弾性手段３３の弾力により、原稿圧着板Ｋを開閉操作する際に当該原稿圧着板Ｋの本来の重さを感じることなく軽く開閉操作することができ、さらに原稿が本のように厚い厚物原稿の場合には、リフト部材３４が弾性手段３３の弾力に抗して支持部材３１に対して反転することにより、厚物原稿の上面を水平に覆うことができるようになっている。
この従来公知構成の原稿圧着板開閉装置Ｉは、原稿圧着板Ｋを最大角度まで開いたときに、支持部材３１の背板３１ａに設けた当接部３１ｃが、ストッパープレート３５のストッパー片３５ａに設けたストッパー部３５ｂへ当接するように構成されている。その際に当接部３１ｃによるストッパープレート３５に対する押圧方向が、（ａ）に矢印Ｒで示した部分の拡大図（ｂ）に矢印Ｌで示したように、斜め下方方向になることから、ストッパープレート３５に対し、これを取付ネジ３６で取り付けた取付部材３０の後板３０ｃから剥がれる方向へ力が加わることになることから、ストッパープレート３５が変形し易いという欠点があった。
As shown in FIG. 13, the known document crimping plate opening / closing device I has a mounting member 30 for mounting the mounting base 30 a on the side of the apparatus main body a, and both side plates 31 b on both side plates 30 b of the mounting member 30. A support member 31 rotatably connected via a hinge pin 32, and both side plates 34b of the support member 31 can be rotated in a direction different from that of the support member 31 via a connection pin 37 toward the free ends of both side plates 31b. The lift member 34 to which the original cover K is attached, the pressure receiving member 40 provided between both side plates 30b of the mounting member 30, and the cam 41a abut against the pressure receiving member 40. a cam slider 41 which is slidably accommodated within the support member 31 by a operating member 38 provided between the both side plates 34b of the lift member 34, is brought into contact with the actuating member 38 The lift member 34 is housed inside the support member 31 so as to be slidable, and is housed inside the support member 31 and is elastically provided between the cam slider 41 and the spring receiver member 39. The elastic member 33 is configured to urge the support member 31 in at least the opening direction of the original pressure plate K while rotating and biasing the support member 31 in a direction overlapping with the support member 31. A stopper plate 35 having a stopper piece 35 a is attached with an attachment screw 36.
With this configuration, when the original cover K is opened and closed by the elasticity of the elastic means 33, the original press plate K can be opened and closed lightly without feeling the original weight of the original cover. In the case of a thick original such as a book, the lift member 34 is reversed with respect to the support member 31 against the elasticity of the elastic means 33 so that the upper surface of the thick original can be covered horizontally. It has become.
In the document crimping plate opening / closing device I having a conventionally known configuration, when the document crimping plate K is opened to the maximum angle, the contact portion 31c provided on the back plate 31a of the support member 31 is brought into contact with the stopper piece 35a of the stopper plate 35. It is comprised so that it may contact | abut to the provided stopper part 35b. At this time, the pressing direction of the contact portion 31c against the stopper plate 35 is obliquely downward as shown by the arrow L in the enlarged view (b) of the portion indicated by the arrow R in (a). Since a force is applied to the plate 35 in a direction in which the plate 35 is peeled off from the rear plate 30c of the attachment member 30 to which the attachment member 30 is attached, there is a drawback that the stopper plate 35 is easily deformed.
支持部材２は、背板２ａと、この背板２ａの両端部から下方へ折り曲げた両側板２ｂ、２ｂと、この両側板２ｂ、２ｂの下端側から共に内側へ折り曲げて形成した抱持板２ｃ、２ｃから構成されており、両側板２ｂ、２ｂは、上述したように、ヒンジピン３によって取付部材１の両側板１ｂ、１ｂへ回転可能に連結されている。両側板２ｂ、２ｂの自由端側には、連結ピン４を介してリフト部材６が回転可能に軸着されると共に、作動部材９の両端側が入り込むガイド溝２ｄ、２ｄが設けられている。その他、指示記号２ｅ、２ｅはヒンジピン挿通孔、指示記号２ｆ、２ｆのものは連結ピン挿通孔、指示記号２ｇ、２ｇは組立時に用いるストッパー孔である。さらに、背板２ａの後端部に設けた指示記号２ｈ、２ｈのものは、原稿圧着板Ｃを開いたときにストッパープレート８のストッパー片８ｆ、８ｆを逃がす逃がし溝である。
The support member 2, a back plate 2a, side plates 2b formed by bending from both ends of the back plate 2a downwards, 2b and this side plates 2b, the retaining plate 2c formed together bent inward from the lower end side of the 2b The two side plates 2b and 2b are rotatably connected to the side plates 1b and 1b of the mounting member 1 by the hinge pins 3, as described above. On the free ends of the side plates 2b and 2b, there are provided guide grooves 2d and 2d into which the lift member 6 is rotatably mounted via the connecting pins 4 and into which both ends of the operating member 9 enter. In addition, the indication symbols 2e and 2e are hinge pin insertion holes, the indication symbols 2f and 2f are connection pin insertion holes, and the indication symbols 2g and 2g are stopper holes used during assembly. Further, the indication symbols 2h and 2h provided at the rear end portion of the back plate 2a are escape grooves for allowing the stopper pieces 8f and 8f of the stopper plate 8 to escape when the original cover C is opened.
次に、上記実施例１に係る原稿圧着板開閉装置Ｂの動作について説明する。今、図５と図７に示したように、原稿圧着板Ｃを閉じた状態においては、主として当該原稿圧着板Ｃの重量により、弾性手段１２の弾力に抗して原稿圧着板Ｃは閉じられ、安定した閉成状態を保っている。尚、ここのところは、弾性手段１２の作用線を受圧部材５の上方へずらすことにより、原稿圧着板Ｃを閉成方向へ回転付勢させるように構成することもできる。閉成状態において、とくに図７に示したように、受圧部材５のスライドローラ５ｂはその長径部側の摺接部５ｃをカムスライダー１０のカム部１０ａと面接触させており、最も圧縮された状態の弾性手段１２の弾力を面で受けている。
Next, the operation of the document crimping plate opening / closing device B according to the first embodiment will be described. As shown in FIGS. 5 and 7, when the original cover C is closed, the original cover C is closed against the elasticity of the elastic means 12 mainly by the weight of the original cover C. , Keeps stable closed state. Here, it is also possible to configure so that the original cover C is rotated and biased in the closing direction by shifting the line of action of the elastic means 12 above the pressure receiving member 5. In the closed state, particularly as shown in FIG. 7, the slide roller 5b of the pressure receiving member 5 has the sliding contact portion 5c on the long diameter side thereof in surface contact with the cam portion 10a of the cam slider 10, and is most compressed. The elasticity of the elastic means 12 in the state is received by the surface.
Ａ 複合機
ａ 装置本体
Ｂ、Ｂ’、Ｇ、Ｉ 原稿圧着板開閉装置
Ｃ、Ｋ 原稿圧着板
Ｄ 回転制御手段
Ｅ フリクション・ストッパー手段
Ｆ ストッパー手段
１ 取付部材
１ａ 取付ベース
１ｂ 両側板
１ｃ 後板
２ 支持部材
２ａ 背板
２ｂ 両側板
３ ヒンジピン
４ 連結ピン
５ 受圧部材
６ リフト部材
６ａ 背板
６ｂ 両側板
８ ストッパープレート
９ 作動部材
１０ カムスライダー
１０ａ カム部
１１ スプリング受け部材
１２ 弾性手段
１６ クリック・フリクションプレート
１７ 当接シャフト（当接部材）
２０ ストッパープレート
２１ 当接シャフト（当接部材）
３０ 取付部材
３０ａ 取付ベース
３０ｂ 両側板
３０ｃ 後板
３１ 支持部材
３１ａ 背板
３１ｂ 両側板
３２ ヒンジピン
３３ 弾性手段
３４ リフト部材
３４ａ 背板
３４ｂ 両側板
３５ ストッパープレート
３７ 連結ピン
３８ 作動部材
３９ スプリング受け部材
４０ 受圧部材
４１ カムスライダー
A Multi-function device a Device body B, B ′, G, I Document pressure plate opening / closing device C, K Document pressure plate D Rotation control means E Friction / stopper means F Stopper means 1 Mounting member 1a Mounting base 1b Both side plates 1c Rear plate 2 Support member 2a Back plate 2b Both side plates 3 Hinge pin 4 Connecting pin 5 Pressure receiving member 6 Lift member 6a Back plate 6b Both side plates 8 Stopper plate 9 Actuating member 10 Cam slider 10a Cam portion 11 Spring receiving member 12 Elastic means 16 Click / friction plate 17 Contact shaft (contact member)
20 Stopper plate 21 Contact shaft (contact member)
DESCRIPTION OF SYMBOLS 30 Mounting member 30a Mounting base 30b Both side plate 30c Rear plate 31 Support member 31a Back plate 31b Both side plate 32 Hinge pin 33 Elastic means 34 Lift member 34a Back plate 34b Both side plate 35 Stopper plate 37 Connecting pin 38 Actuating member 39 Spring receiving member 40 Pressure receiving Member 41 Cam slider
