JP2007217163A - Manual paper feed tray maintaining mechanism - Google Patents

Manual paper feed tray maintaining mechanism Download PDF

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JP2007217163A
JP2007217163A JP2006041937A JP2006041937A JP2007217163A JP 2007217163 A JP2007217163 A JP 2007217163A JP 2006041937 A JP2006041937 A JP 2006041937A JP 2006041937 A JP2006041937 A JP 2006041937A JP 2007217163 A JP2007217163 A JP 2007217163A
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feed tray
tray
manual feed
hole
protrusion
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Masahiko Miyazaki
昌彦 宮崎
Masuo Kawamoto
益雄 河本
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Kyocera Document Solutions Inc
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Kyocera Mita Corp
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Priority to JP2006041937A priority Critical patent/JP2007217163A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To stably maintain a manual paper feed tray openably installed on the side surface of a device body in a use state and a stored state by a simple structure without increasing the number of parts. <P>SOLUTION: A projection 12 of non-circular shape in cross section serving as the center of rotation of a tray body 11 is formed on each side lower part of the tray body 11 on which paper is placed. A hole part 22 having a round hole 22a with a diameter equal to or slightly larger than the maximum diameter of the projection 12 and an elongated hole 22b formed continuously with the upper part of the round hole 22a and having a width smaller than the maximum diameter of the projection 12 is formed in each inner wall of a storage part 21. A spring 3a always biasing the projection 12 upward is fitted to the device body 2. The projections 12 of the manual paper feed tray 1 are engaged with the hole parts 22 of the storage part 21. Then, the projections 12 are positioned at the elongated holes 22b to maintain the manual paper feed tray in the closed state, and positioned at the round holes 22a so that the manual paper feed tray can be rotated to maintain the open state. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、プリンタやファクシミリ、複写機などの画像形成装置の側面に開閉自在に取り付けられた手差しトレイの維持機構に関するものである。   The present invention relates to a maintenance mechanism for a manual feed tray that is attached to a side surface of an image forming apparatus such as a printer, a facsimile machine, and a copying machine so as to be freely opened and closed.

ハガキやＯＨＰ、シール紙などの用紙に画像を形成するために、大半の画像形成装置には手差し給紙機構が設けられている。手差し給紙機構の一つとして、装置本体の側面に手差しトレイを開閉自在に取り付けたものがある。図７に、このような手差し給紙機構を示す。   In order to form an image on a sheet such as a postcard, OHP, or sticker sheet, most image forming apparatuses are provided with a manual sheet feeding mechanism. As one of the manual sheet feeding mechanisms, there is one in which a manual tray is attached to the side surface of the apparatus main body so as to be freely opened and closed. FIG. 7 shows such a manual sheet feeding mechanism.

手差しトレイ１’は、用紙を載置する平板状のトレイ本体１１’を有し、トレイ本体１１’の両側面下部には手差しトレイ１’の回動軸となる突起１２’が形成されている。そして装置本体２の側面に手差しトレイ１’を収容可能な凹部２１が形成され、凹部２１の内側面下部に不図示の係合孔が形成されている。トレイ本体１１’の突起１２’を装置本体２の係合孔に装着することによって、手差しトレイ１’は装置本体２の側面に開閉自在に取り付けられる。   The manual feed tray 1 ′ has a flat tray main body 11 ′ on which paper is placed, and projections 12 ′ serving as a rotation axis of the manual feed tray 1 ′ are formed on the lower sides of both sides of the tray main body 11 ′. . A recess 21 capable of accommodating the manual feed tray 1 ′ is formed on the side surface of the apparatus main body 2, and an engagement hole (not shown) is formed in the lower portion of the inner side surface of the recess 21. By attaching the projection 12 ′ of the tray main body 11 ′ to the engagement hole of the apparatus main body 2, the manual feed tray 1 ′ is attached to the side surface of the apparatus main body 2 so as to be freely opened and closed.

このような手差し給紙機構において手差しトレイ１’を使用しないとき、装置本体２の凹部２１に手差しトレイ１’を収納した状態を維持するために、これまでから種々のトレイ維持手段が提案されている。例えば特許文献１では、手差しトレイにマグネットを取り付ける共に、装置本体に磁性片を取り付け、磁力によって手差しトレイの閉状態を維持することが提案されている。また特許文献２では、トレイ本体の両側面に突起を形成すると共に、収納部の内側壁に凹部を形成して突起と凹部との緩やかな係合によって手差しトレイの閉状態を維持することが提案されている。
実開平１−１５９６５０号公報 特開平５−９２８４６号公報 In order to maintain the state in which the manual tray 1 ′ is stored in the concave portion 21 of the apparatus body 2 when the manual feed tray 1 ′ is not used in such a manual paper feed mechanism, various tray maintaining means have been proposed so far. Yes. For example, Patent Document 1 proposes that a magnet is attached to the manual feed tray, a magnetic piece is attached to the apparatus main body, and the closed state of the manual feed tray is maintained by a magnetic force. Patent Document 2 proposes that protrusions are formed on both side surfaces of the tray main body, and a concave portion is formed on the inner wall of the storage portion so that the manual feed tray is kept closed by loose engagement between the protrusion and the concave portion. Has been.
Japanese Utility Model Publication 1-159650 Japanese Patent Laid-Open No. 5-92846

しかしながら、前者の提案技術では部品点数が多く装置の小型化が難しい。また後者の提案技術ではトレイ本体に形成した突起が、使用によって徐々に摩滅していくので、長期間にわたって安定して手差しトレイの閉状態を維持することが難しい。   However, the former proposed technique has a large number of parts and it is difficult to reduce the size of the apparatus. In the latter proposed technique, the protrusion formed on the tray body is gradually worn away by use, and it is difficult to stably maintain the manual feed tray in a closed state over a long period of time.

本発明はこのような従来の問題に鑑みてなされたものであり、その目的とするところは、部品点数を増やすことなく簡単な構造で、装置本体の側面に開閉自在に取り付けられた手差しトレイを開状態および閉状態で安定して維持できる手差しトレイ維持機構を提供することにある。   The present invention has been made in view of such a conventional problem, and an object of the present invention is to provide a manual tray mounted on the side surface of the apparatus body so as to be openable and closable with a simple structure without increasing the number of parts. An object of the present invention is to provide a manual tray maintaining mechanism that can be stably maintained in an open state and a closed state.

本発明によれば、装置本体の側面に形成された収納部に開閉自在に取り付けられた手差しトレイを、開状態及び閉状態で維持する機構であって、用紙を載置するトレイ本体の両側面下部に、トレイ本体の回動中心となる断面非円形の突起を形成すると共に、前記突起の最大径と同じか若干大きい丸孔と、この丸孔の上部に連続して形成された、前記突起の最大径よりも狭い幅の長孔とを有する孔部を、前記収納部の両内側壁に形成し、そして前記突起を上方へ常に付勢する付勢手段を装置本体に取り付け、手差しトレイの前記突起を収納部の前記孔部に係合させ、前記突起を長孔に位置させることによって手差しトレイの閉状態を維持させ、前記突起を丸孔に位置させることによって、手差しトレイの回動を可能とするとともに開状態を維持させるようにしたことを特徴とする手差しトレイ維持機構が提供される。   According to the present invention, there is provided a mechanism for maintaining the manual feed tray, which is openably and closably attached to a storage portion formed on the side surface of the apparatus main body, in an open state and a closed state, and is provided on both side surfaces of the tray main body on which paper is placed A protrusion having a non-circular cross-section serving as the center of rotation of the tray body is formed in the lower part, a round hole having the same diameter as or slightly larger than the maximum diameter of the protrusion, and the protrusion formed continuously from the upper part of the round hole. A hole having a narrow hole with a width smaller than the maximum diameter is formed on both inner side walls of the storage portion, and a biasing means for constantly biasing the protrusion upward is attached to the apparatus main body, The protrusion is engaged with the hole of the storage section, the protrusion is positioned in the long hole to maintain the closed state of the manual feed tray, and the protrusion is positioned in the round hole to rotate the manual tray. Enabled and maintained open Manual feed tray holding mechanism, characterized in that the the cause is provided.

ここで、手差しトレイの閉状態を一層安定して維持する観点から、収納部の周縁から収納部の内方へ延び出るようにロック片を設け、手差しトレイを閉状態としたとき、手差しトレイ上部の外側をロック片で覆って手差しトレイの回動を阻止する一方、手差しトレイの突起を丸孔に位置させたとき、ロック片による手差しトレイ上部の覆いが外れて手差しトレイの回動が可能となるようにするのが好ましい。装置の小型化の観点からは、トレイ本体に段部を形成し、この段部にロック片を係合させるようにするのが望ましい。   Here, from the viewpoint of maintaining the closed state of the manual feed tray more stably, when the lock tray is provided so as to extend from the periphery of the storage unit to the inside of the storage unit, and the manual feed tray is closed, the upper part of the manual feed tray The manual feed tray is prevented from rotating by covering the outside of the manual feed tray with the lock piece. It is preferable to do so. From the viewpoint of reducing the size of the apparatus, it is desirable to form a step portion on the tray body and engage a lock piece with the step portion.

本発明の手差しトレイ維持機構では、装置本体の収納部に開閉自在に取り付けられる手差しトレイに、回動中心となる断面非円形の突起を形成するとともに、装置本体の収納部の両内側壁に、突起の最大径と同じか若干大きい丸孔と、この丸孔の上部に連続して形成された、突起の最大径よりも狭い幅の長孔とを有する孔部を形成する。そして前記突起を上方へ常に付勢する付勢手段を装置本体に取り付け、手差しトレイの突起を収納部の孔部に係合させ、突起を長孔に位置させることによって手差しトレイの閉状態を維持させ、突起を丸孔に位置させることによって、手差しトレイの回動を可能とするとともに開状態を維持させるようにするので、部品点数を増やすことなく簡単な構造で、手差しトレイを開状態および閉状態で安定して維持できる。   In the manual feed tray maintaining mechanism of the present invention, the manual feed tray that is openably and closably attached to the storage portion of the apparatus main body is formed with a non-circular cross-sectional protrusion serving as a rotation center, and on both inner side walls of the storage portion of the apparatus main body, A hole having a round hole that is the same as or slightly larger than the maximum diameter of the protrusion and a long hole having a width narrower than the maximum diameter of the protrusion is formed continuously above the circular hole. A biasing means for constantly biasing the protrusion upward is attached to the apparatus main body, the protrusion of the manual feed tray is engaged with the hole of the storage portion, and the protrusion is positioned in the long hole to maintain the closed state of the manual feed tray. By positioning the protrusion in the round hole, the manual feed tray can be rotated and maintained in the open state, so that the manual feed tray can be opened and closed with a simple structure without increasing the number of parts. Can be stably maintained in the state.

収納部の周縁から収納部の内方へ延び出るようにロック片を設け、手差しトレイを閉状態としたとき、手差しトレイの外側をロック片で覆って手差しトレイの回動を阻止する一方、手差しトレイの突起を丸孔に位置させたとき、ロック片による手差しトレイ上部の覆いが外れて手差しトレイの回動が可能となるようにすると、手差しトレイの閉状態を一層安定して維持できるようになる。加えて、トレイ本体に段部を形成し、この段部にロック片を係合させるようにすると装置の薄型化が図れる。   When a lock piece is provided so as to extend from the periphery of the storage unit to the inside of the storage unit and the manual feed tray is closed, the outside of the manual feed tray is covered with the lock piece to prevent the manual feed tray from rotating. When the protrusion of the tray is positioned in the round hole, the manual feed tray can be rotated by removing the cover of the manual feed tray by the lock piece so that the closed state of the manual feed tray can be maintained more stably. Become. In addition, the apparatus can be thinned by forming a step portion in the tray body and engaging the lock piece with the step portion.

以下、本発明に係る手差しトレイの維持機構について図に基づいて説明するが、本発明はこれらの実施形態に何ら限定されるものではない。   Hereinafter, although the manual feed tray maintaining mechanism according to the present invention will be described with reference to the drawings, the present invention is not limited to these embodiments.

図１は、本発明に係る手差しトレイ維持機構の一例を示す概説図である。同図（ａ）は手差しトレイ１が閉状態、同図（ｂ）は手差しトレイ１が開状態のときの概説図である。手差しトレイ１は、用紙が載置される平板状のトレイ本体１１と、トレイ本体１１の両側面下部に形成された突起１２を有する。一方、装置本体２はその側面に、手差しトレイ１を収納する収納部２１を有し、収納２１部の内側壁には孔部（不図示）が形成されている。この不図示の孔部にトレイ本体１１の突起１２を係合することによって、手差しトレイ１は装置本体２に対して開閉自在且つ上下方向に移動可能に取り付けられている。なお突起１２と孔部の具体的形状については後述する。そして、収納部２１の上部にはロック片２３が下方へ延出している一方、トレイ本体１１の自由端側の裏面側には段部１３が形成されている。これにより、手差しトレイ１が閉状態とされたとき、すなわち、手差しトレイ１が収納部２１に収納され、不図示のバネ（付勢部材）によって上方へ移動したとき、トレイ本体１１の段部１３がロック片２３と係合し、手差しトレイ１の回動が確実に阻止される。また、トレイ本体１１に段部１３を形成していない場合に比べて、段部１３を形成している分だけ収納部２１の奥行きを浅くすることができる。   FIG. 1 is a schematic view showing an example of a manual feed tray maintaining mechanism according to the present invention. FIG. 4A is a schematic diagram when the manual feed tray 1 is in a closed state, and FIG. 4B is a schematic view when the manual feed tray 1 is in an open state. The manual feed tray 1 has a flat tray main body 11 on which paper is placed, and protrusions 12 formed at lower portions on both side surfaces of the tray main body 11. On the other hand, the apparatus main body 2 has a storage portion 21 for storing the manual feed tray 1 on its side surface, and a hole (not shown) is formed in the inner wall of the storage 21 portion. By engaging the projection 12 of the tray main body 11 with this hole (not shown), the manual feed tray 1 is attached to the apparatus main body 2 so as to be openable and closable and movable in the vertical direction. The specific shapes of the protrusion 12 and the hole will be described later. A lock piece 23 extends downward from the upper portion of the storage portion 21, while a step portion 13 is formed on the back side of the free end side of the tray body 11. Thereby, when the manual feed tray 1 is closed, that is, when the manual feed tray 1 is stored in the storage portion 21 and moved upward by a spring (biasing member) (not shown), the step portion 13 of the tray main body 11 is stored. Engages with the lock piece 23 and the manual feed tray 1 is reliably prevented from rotating. Further, as compared with the case where the stepped portion 13 is not formed on the tray body 11, the depth of the storage portion 21 can be reduced by the amount of the formed stepped portion 13.

図２に、手差しトレイ１の斜視図を示す。平板状のトレイ本体１１の両側面下部には手差しトレイ１の回動軸となる突起１２が形成されている。突起１２の断面形状は、四角形の対向する辺に、当該辺が直径となる半円をそれぞれ付加した形状とされている（図３を参照）。そして、トレイ本体１１の長手方向（図の上下方向）と突起断面の最大径の方向とが同方向となるように、トレイ本体１１に突起１２が形成されている。また、トレイ本体１１の自由端側（図の上側）の裏面側には段部１３が形成されている。この段部１３の深さは収納部２１に形成されたロック片２３の厚みと略同じとされれている。これにより、手差しトレイ１を収納部２１に収納し閉状態としたときに、装置本体２の側面とトレイ本体１１の裏面が同一面上となり優れた外観が得られると同時に、収納部２１の奥行きを浅くでき装置の薄型化が図れる（図１（ａ）参照）。   FIG. 2 is a perspective view of the manual feed tray 1. Protrusions 12 serving as a rotation shaft of the manual feed tray 1 are formed at lower portions on both side surfaces of the flat tray body 11. The cross-sectional shape of the protrusion 12 is a shape in which a semicircle having a diameter of the side is added to the opposite sides of the quadrangle (see FIG. 3). And the protrusion 12 is formed in the tray main body 11 so that the longitudinal direction (up-down direction of a figure) of the tray main body 11 and the direction of the largest diameter of a protrusion cross section may become the same direction. Further, a step portion 13 is formed on the back side of the free end side (upper side in the figure) of the tray body 11. The depth of the step portion 13 is substantially the same as the thickness of the lock piece 23 formed in the storage portion 21. As a result, when the manual feed tray 1 is stored in the storage unit 21 and closed, the side surface of the apparatus main body 2 and the back surface of the tray main body 11 are flush with each other, and an excellent appearance can be obtained. As a result, the device can be made thinner (see FIG. 1A).

一方、図３に示すように、収納部２１の内側壁には、突起１２の最大径と略同じ丸孔２２ａと、この丸孔２２ａの上部に連続して形成された、突起１２の最小径と略同じ幅の長孔２２ｂとからなる孔部２２が形成されている。この孔部２２に突起１２を挿着することによって、装置本体２に手差しトレイ１が取り付けられる。そして、同図（ａ）に示すように、孔部２２から突出した突起１２の下側部には、装置本体１に両端が固定され張架された線状のゴムやバネなどの弾性部材３ａの中間部分が接触し、突起１２を上方へ常に付勢している。突起１２を上方へ付勢する手段としては、この他にも例えば同図（ｂ）に示すように、バネなどの弾性部材３ｂの上端を装置本体２に固定し、弾性部材３ｂの下端を突起１２に取り付け、突起１２を上方へ常に付勢するようにしてもよい。もちろん、本発明で使用する付勢手段はこれらに限定されるものではなく、従来公知のものを使用できる。   On the other hand, as shown in FIG. 3, the inner wall of the storage portion 21 has a round hole 22a substantially the same as the maximum diameter of the protrusion 12, and the minimum diameter of the protrusion 12 formed continuously above the round hole 22a. Are formed with a long hole 22b having substantially the same width. The manual feed tray 1 is attached to the apparatus main body 2 by inserting the protrusions 12 into the hole portions 22. Then, as shown in FIG. 6A, an elastic member 3a such as a linear rubber or a spring that is fixed and stretched at both ends of the apparatus main body 1 is provided on the lower side of the projection 12 protruding from the hole 22. The middle part of the contact is in contact, and the protrusion 12 is constantly urged upward. As another means for urging the protrusion 12 upward, for example, as shown in FIG. 4B, the upper end of the elastic member 3b such as a spring is fixed to the apparatus body 2, and the lower end of the elastic member 3b is protruded. The projection 12 may be always urged upward. Of course, the biasing means used in the present invention is not limited to these, and conventionally known biasing means can be used.

次に、手差しトレイの開閉操作時の、収納部２１の孔部２２とトレイ本体１１の突起１２との係合状態について説明する。図４に、収納部２１の孔部２２にトレイ本体１１の突起１２を係合させたときの状態図を示す。同図（ａ）は手差しトレイ１が閉状態のときであって、突起１２は長孔２２ｂの上端に位置している。なお、突起１２が長孔２２ｂの上端に位置しているのは、図３で示した付勢手段３ａによって突起１２が上方に常に付勢されているからである。前述のように、長孔２２ｂの幅は突起１２の最小径と略同じであるから、長孔２２ｂの領域では突起１２は回動できない。したがって突起１２が長孔２２ｂに位置している間は、手差しトレイ１は回動できず閉状態が安定して維持される。手差しトレイ１を閉状態から開状態にするには、同図（ｂ）に示すように、手差しトレイ１を付勢手段３ａ（図３に図示）に抗して下方に下げ、突起１２を丸孔２２ａに位置させる。丸孔２２ａは突起１２の最大径と略同じであるから、丸孔２２ａの位置では突起１２は回動可能となる。これによって、同図（ｃ）に示すように、手差しトレイ１を回動させて開状態にできる。付勢手段３ａ（図３に図示）によって突起１２は上方へ常に付勢されているが、手差しトレイ１が開状態のときは、突起１２の水平方向の長さが長孔２２ｂの幅よりも大きくなっているため、長孔２２ｂに突起１２が進入することができない。これにより、手差しトレイ１が開状態のままで上方へ移動することが防止され、手差しトレイ１の開状態が安定して維持されるようになる。   Next, the engagement state between the hole portion 22 of the storage portion 21 and the protrusion 12 of the tray main body 11 when the manual tray is opened and closed will be described. FIG. 4 shows a state diagram when the projection 12 of the tray body 11 is engaged with the hole 22 of the storage unit 21. FIG. 4A shows the state in which the manual feed tray 1 is closed, and the protrusion 12 is located at the upper end of the long hole 22b. The reason why the protrusion 12 is positioned at the upper end of the long hole 22b is that the protrusion 12 is always urged upward by the urging means 3a shown in FIG. As described above, since the width of the long hole 22b is substantially the same as the minimum diameter of the protrusion 12, the protrusion 12 cannot rotate in the region of the long hole 22b. Therefore, while the protrusion 12 is positioned in the long hole 22b, the manual feed tray 1 cannot rotate and the closed state is stably maintained. In order to change the manual feed tray 1 from the closed state to the open state, the manual feed tray 1 is lowered downward against the urging means 3a (shown in FIG. 3) as shown in FIG. It is located in the hole 22a. Since the round hole 22a is substantially the same as the maximum diameter of the protrusion 12, the protrusion 12 is rotatable at the position of the round hole 22a. As a result, as shown in FIG. 3C, the manual feed tray 1 can be rotated to be opened. The protrusion 12 is always urged upward by the urging means 3a (shown in FIG. 3). However, when the manual feed tray 1 is in the open state, the horizontal length of the protrusion 12 is larger than the width of the long hole 22b. Since it is large, the protrusion 12 cannot enter the long hole 22b. As a result, the manual feed tray 1 is prevented from moving upward in the open state, and the open state of the manual feed tray 1 is stably maintained.

図５に、閉状態にある手差しトレイ１の回動を確実に防止するために、収納部２１の周縁にロック片２３を設けた場合の図を示す。なお、図５は、図１に示した装置の側面図である。手差しトレイ１を回動させて開状態から収納部２１へ収納した状態とすると（同図（ａ））、付勢手段３ａ（図３に図示）によって手差しトレイ１は上方へ移動し閉状態となる（同図（ｂ））。トレイ本体１１の自由端側の裏面には段部１３が形成されており、手差しトレイ１が閉状態になると、収納部２１の上部から垂下したロック片２３によってトレイ本体１１の段部１３の一部が覆われる。これによって、閉状態にある手差しトレイ１の回動が確実に防止されるようになる。手差しトレイ１を開状態にする場合には、ロック片２３によって覆われていない段部１３の段差部分に下向きの力を加えて、手差しトレイ１を下方に移動させた後回動させて開状態とする。   FIG. 5 shows a view in which a lock piece 23 is provided on the periphery of the storage portion 21 in order to reliably prevent the manual feed tray 1 in the closed state from rotating. 5 is a side view of the apparatus shown in FIG. When the manual feed tray 1 is rotated to be stored in the storage unit 21 from the open state (FIG. 3A), the manual feed tray 1 is moved upward by the urging means 3a (shown in FIG. 3) to be in the closed state. ((B) in the figure). A step portion 13 is formed on the back surface on the free end side of the tray main body 11, and when the manual feed tray 1 is in a closed state, one of the step portions 13 of the tray main body 11 is formed by a lock piece 23 hanging from the upper portion of the storage portion 21. Part is covered. As a result, the rotation of the manual feed tray 1 in the closed state is reliably prevented. When the manual feed tray 1 is opened, a downward force is applied to the stepped portion of the stepped portion 13 that is not covered by the lock piece 23, and the manual feed tray 1 is moved downward and then rotated to be opened. And

収納部２１の周縁に形成するロック片２３は、閉状態の手差しトレイ１の一部を覆うものであればよい。例えば図６（ａ）では、収納部２１の上辺の離隔した位置に２つの長方形状のロック片２３を形成し、トレイ本体１１の段部１３の一部を覆うようにしている。また同図（ｂ）では、収納部２１の対向する側辺の上部に長方形状のロック片２３をそれぞれ形成し、トレイ本体１１の段部１３の一部を覆うようにしている。ロック片２３の形成位置に特に限定はないが、手差しトレイ１の回動を小さな強度で防止するには、回動軸である突起１２から離れた位置に形成するのが望ましい。またロック片２３は装置本体２と一体に形成してもよいし、装置本体２と別に成形した後装置本体２に取り付けてもよい。   The lock piece 23 formed on the peripheral edge of the storage portion 21 may be anything that covers a part of the closed manual feed tray 1. For example, in FIG. 6A, two rectangular lock pieces 23 are formed at spaced positions on the upper side of the storage portion 21 so as to cover a part of the step portion 13 of the tray body 11. In FIG. 2B, rectangular lock pieces 23 are respectively formed on the upper sides of the opposing sides of the storage portion 21 so as to cover a part of the step portion 13 of the tray main body 11. The position where the lock piece 23 is formed is not particularly limited. However, in order to prevent the manual feed tray 1 from rotating with a small strength, it is desirable to form the lock piece 23 at a position away from the protrusion 12 that is the rotation shaft. The lock piece 23 may be formed integrally with the apparatus main body 2 or may be formed separately from the apparatus main body 2 and then attached to the apparatus main body 2.

本発明に係る手差しトレイの維持機構の一例を示す概説図である。It is a schematic diagram showing an example of a manual feed tray maintenance mechanism according to the present invention. 本発明で使用する手差しトレイの一例を示す斜視図である。It is a perspective view which shows an example of the manual feed tray used by this invention. トレイ本体の突起が付勢手段によって上方に付勢されているのを説明する図である。It is a figure explaining that the protrusion of a tray main body is urged | biased upwards by the urging | biasing means. トレイ本体の突起と収納部の孔部との係合状態を示す図である。It is a figure which shows the engagement state of the protrusion of a tray main body, and the hole of a storage part. トレイ本体の段部とロック片の係合状態を示す図である。It is a figure which shows the engagement state of the step part of a tray main body, and a lock piece. 収納部に形成するロック片の他の例を示す図である。It is a figure which shows the other example of the lock piece formed in a accommodating part. 従来の手差しトレイの構成を示す概説図である。It is a schematic diagram which shows the structure of the conventional manual feed tray.

符号の説明Explanation of symbols

１ 手差しトレイ
２ 装置本体
３ａ，３ｂ バネ（付勢手段）
１１ トレイ本体
１２ 突起
１３ 段部
２１ 収納部
２２ 孔部
２２ａ 丸孔
２２ｂ 長孔
２３ ロック片 DESCRIPTION OF SYMBOLS 1 Manual feed tray 2 Apparatus main body 3a, 3b Spring (biasing means)
11 Tray body 12 Projection 13 Step part 21 Storage part 22 Hole part 22a Round hole 22b Long hole 23 Lock piece

Claims (3)

装置本体の側面に形成された収納部に開閉自在に取り付けられた手差しトレイを、開状態及び閉状態で維持する機構であって、
用紙を載置するトレイ本体の両側面下部に、トレイ本体の回動中心となる断面非円形の突起を形成すると共に、前記突起の最大径と同じか若干大きい丸孔と、この丸孔の上部に連続して形成された、前記突起の最大径よりも狭い幅の長孔とを有する孔部を、前記収納部の両内側壁に形成し、そして前記突起を上方へ常に付勢する付勢手段を装置本体に取り付け、
手差しトレイの前記突起を収納部の前記孔部に係合させ、前記突起を長孔に位置させることによって手差しトレイの閉状態を維持させ、前記突起を丸孔に位置させることによって、手差しトレイの回動を可能とするとともに開状態を維持させるようにしたことを特徴とする手差しトレイ維持機構。 A mechanism for maintaining a manual feed tray, which is openably and closably attached to a storage portion formed on a side surface of the apparatus main body, in an open state and a closed state,
Protrusions with a non-circular cross-section serving as the center of rotation of the tray body are formed at the lower portions of both side surfaces of the tray body on which the paper is placed, and a round hole having the same or slightly larger diameter than the maximum diameter of the projection, And a hole having a narrow hole having a width narrower than the maximum diameter of the protrusion is formed on both inner side walls of the storage portion, and the protrusion is always biased upward. Attach means to the device body,
By engaging the projection of the manual feed tray with the hole of the storage unit, and positioning the projection in the long hole, the closed state of the manual feed tray is maintained, and by positioning the projection in the round hole, A manual feed tray maintaining mechanism characterized in that it can be rotated and maintained in an open state. 収納部の周縁から収納部の内方へ延び出るロック片を設け、手差しトレイを閉状態としたとき、手差しトレイ上部の外側をロック片で覆って手差しトレイの回動を阻止する一方、手差しトレイの突起を丸孔に位置させたとき、ロック片による手差しトレイ上部の覆いが外れて手差しトレイの回動が可能となるようにした請求項１記載の手差しトレイ維持機構。   When a lock piece extending from the periphery of the storage section to the inside of the storage section is provided and the manual feed tray is closed, the outer side of the upper portion of the manual feed tray is covered with the lock piece to prevent the manual feed tray from rotating. 2. The manual tray maintaining mechanism according to claim 1, wherein when the protrusion is positioned in the round hole, the cover of the upper portion of the manual tray is removed by the lock piece so that the manual tray can be rotated. トレイ本体に段部を形成し、この段部にロック片を係合させる請求項２記載の手差しトレイ維持機構。   The manual feed tray maintaining mechanism according to claim 2, wherein a step portion is formed in the tray body, and a lock piece is engaged with the step portion.
JP2006041937A 2006-02-20 2006-02-20 Manual paper feed tray maintaining mechanism Pending JP2007217163A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014091616A1 (en) * 2012-12-14 2014-06-19 キヤノン株式会社 Sheet-holding device and image-forming device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014091616A1 (en) * 2012-12-14 2014-06-19 キヤノン株式会社 Sheet-holding device and image-forming device
CN104854007A (en) * 2012-12-14 2015-08-19 佳能株式会社 Sheet stacking device and image forming apparatus
US9242827B2 (en) 2012-12-14 2016-01-26 Canon Kabushiki Kaisha Sheet stacking device and image forming apparatus
JPWO2014091616A1 (en) * 2012-12-14 2017-01-05 キヤノン株式会社 Sheet stacking apparatus and image forming apparatus

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