JPH051740U - Automatic paper feed mechanism - Google Patents
Automatic paper feed mechanismInfo
- Publication number
- JPH051740U JPH051740U JP4866991U JP4866991U JPH051740U JP H051740 U JPH051740 U JP H051740U JP 4866991 U JP4866991 U JP 4866991U JP 4866991 U JP4866991 U JP 4866991U JP H051740 U JPH051740 U JP H051740U
- Authority
- JP
- Japan
- Prior art keywords
- paper
- friction plate
- paper feed
- feed roller
- leaf spring
- 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.)
- Pending
Links
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- Facsimiles In General (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
(57)【要約】
【構成】摩擦板３は用紙１を紙送り方向に繰り込む給紙
ローラ２に接する最下部の用紙１を介して給紙ローラ２
を押圧するゴム等の弾性材からなり、板ばね４の圧力で
押圧される。板ばね５は給紙ローラ２を押圧して用紙１
を摩擦板３まで繰り込む。板ばね６は摩擦板３の給紙ロ
ーラ押圧面側に設けられ、給紙ローラ２を押圧して用紙
１を摩擦板３まで繰り込む。また板ばね５の給紙ローラ
押圧点を摩擦板３の給紙ローラ開始点に極めて近く設定
する。
【効果】摩擦板の真中に設けた板ばねと、摩擦板両翼の
板ばねの給紙ローラ押圧点を摩擦板の給紙ローラ押圧開
始点に近づけることにより、用紙のばたつきを抑制し、
用紙繰り込み時の障害を防止する。
(57) [Summary] [Structure] The friction plate 3 feeds the paper 1 through the paper feed roller 2 through which the paper 1 is fed in the paper feed direction.
It is made of an elastic material such as rubber that presses against, and is pressed by the pressure of the leaf spring 4. The leaf spring 5 presses the paper feed roller 2 to press the paper 1
To the friction plate 3. The leaf spring 6 is provided on the paper feed roller pressing surface side of the friction plate 3 and presses the paper feed roller 2 to retract the paper 1 to the friction plate 3. Further, the feeding roller pressing point of the leaf spring 5 is set very close to the feeding roller starting point of the friction plate 3. [Effect] By suppressing the leaf spring provided in the center of the friction plate and the feed roller pressing points of the leaf springs of both blades of the friction plate close to the feed roller pressing start point of the friction plate, the fluttering of the paper is suppressed,
Prevents obstacles when picking up paper.
Description
【０００１】[0001]
本考案は自動給紙機構に関し、特にフアクシミリ装置及びその類似装置におけ る自動給紙機構に関する。 The present invention relates to an automatic paper feeding mechanism, and more particularly to a fax machine and similar devices. Automatic feed mechanism.
【０００２】[0002]
従来、この種の自動給紙機構は、図４に示すように、積重ねた用紙（原稿）１ を紙送り方向に繰り込む給紙ローラ２と、この給紙ローラ２に接する最下部の用 紙１を介して給紙ローラ２を押圧するゴム等の弾性材による摩擦板９と、この摩 擦板９を所定の圧力で押圧する板ばね４と、用紙１を介して給紙ローラ２を押圧 し、用紙１を摩擦板９まで繰り込む板ばね５によって構成され、給紙ローラ２及 び用紙１間と用紙１相互間と用紙１及び摩擦板９との摩擦力の差によって、最下 部から１枚ずつ用紙１を紙送り方向に繰り出している。 Conventionally, as shown in FIG. 4, an automatic paper feed mechanism of this type has stacked sheets (original) 1 The paper feed roller 2 for feeding the paper in the paper feed direction, and the lowermost one that contacts the paper feed roller 2. A friction plate 9 made of an elastic material such as rubber for pressing the paper feed roller 2 via the paper 1 and the friction plate 9 The leaf spring 4 that presses the friction plate 9 with a predetermined pressure and the paper feed roller 2 that presses the paper 1 Then, it is constituted by the leaf spring 5 that retracts the sheet 1 to the friction plate 9, and the sheet feeding roller 2 and And the difference between the paper 1 and the paper 1 and the frictional force between the paper 1 and the friction plate 9 Sheets 1 are fed out one by one from the set in the paper feeding direction.
【０００３】[0003]
上述した従来の自動給紙機構は、板ばね５の押圧力によって用紙を摩擦板９ま で繰り出し、板ばね４の押圧力によって発生する摩擦板９と用紙間の摩擦力に依 存して、２枚目以降が１枚目と同時に繰り出されるのを防止している。板ばね４ 及び板ばね５を適正値に設定すれば、用紙の２枚送りや送らず等の障害を防止で きるが、薄紙を通紙した場合には先端しわ及び先端めくれ等の障害が発生する。 また薄紙の通紙により発生する障害を防止する為、板ばね４及び板ばね５の押圧 力を下げると、２枚送り或いは送らず等の障害を招くという欠点がある。 In the above-described conventional automatic paper feeding mechanism, the pressing force of the leaf spring 5 pushes the paper to the friction plate 9. And it depends on the frictional force between the friction plate 9 and the paper generated by the pressing force of the leaf spring 4. Therefore, the second and subsequent sheets are prevented from being fed out at the same time as the first sheet. Leaf spring 4 By setting the leaf springs 5 and leaf springs to appropriate values, it is possible to prevent problems such as feeding two sheets or not feeding them. However, when thin paper is passed through, problems such as wrinkles at the tip and curl at the tip occur. Further, in order to prevent an obstacle caused by the passage of thin paper, the leaf springs 4 and 5 are pressed. If the force is lowered, there is a drawback that it causes troubles such as feeding two sheets or not feeding them.
【０００４】 本考案の目的は、使用の予測されうるすべての厚さの用紙を、安定して１枚ず つ繰り出しができる自動給紙機構を提供することにある。[0004] The purpose of the present invention is to provide a stable, stable sheet of paper of all thicknesses that can be predicted for use. An object of the present invention is to provide an automatic paper feed mechanism that can feed the paper.
【０００５】[0005]
本考案は積重ねた用紙に圧接してこの用紙を送り方向に繰り出す給紙ローラと 、この給紙ローラに接する最下部の前記用紙を介して前記給紙ローラを押圧する ゴム等の弾性材の摩擦板と、この摩擦板を所定の圧力で押圧する第１の板ばねと 、前記摩擦板の両翼に位置し前記用紙を介して前記給紙ローラを押圧し、前記用 紙を前記摩擦板まで繰り込む第２の板ばねを有する自動給紙機構において、前記 摩擦板の給紙ローラ押圧面側のほぼ中央に設けられ前記用紙を介して前記給紙ロ ーラを押圧し前記用紙を前記摩擦板まで繰り込む第３の板ばねを備えている。 The present invention is a paper feed roller that presses stacked sheets of paper and feeds the sheets in the feeding direction. , Presses the paper feed roller via the lowermost paper that contacts the paper feed roller A friction plate made of an elastic material such as rubber, and a first leaf spring that presses the friction plate with a predetermined pressure. , Located on both sides of the friction plate and pressing the paper feed roller through the paper, In an automatic paper feed mechanism having a second leaf spring that rolls paper up to the friction plate, The paper feed roller is provided approximately in the center of the friction plate on the paper feed roller pressing surface side, and the paper feed roller A third leaf spring is provided for pressing the roller to retract the sheet to the friction plate.
【０００６】[0006]
次に、本考案について図面を参照して説明する。 Next, the present invention will be described with reference to the drawings.
【０００７】 図１は本考案の一実施例を示し、同図（ａ）は斜視図、同図（ｂ）は同図（ａ ）のＡ矢視における側面図、同図（ｃ）は同図（ａ）のＢ−Ｂ線断面図、図２は 本実施例における用紙にたわみ状況を（ａ）ないし（ｃ）に順次に示す図、図３ は本考案の他の実施例を示す側面図である。[0007] 1A and 1B show an embodiment of the present invention. FIG. 1A is a perspective view and FIG. ) Side view in the direction of arrow A, FIG. 2C is a sectional view taken along line BB in FIG. 2A, and FIG. 3A to 3C are diagrams sequentially showing the deflection state of the paper in the present embodiment in FIGS. FIG. 6 is a side view showing another embodiment of the present invention.
【０００８】 本実施例は積重ねた用紙（原稿）１を紙送り方向に繰り込む給紙ローラ２と、 この給紙ローラ２に接する最下部の用紙１を介して給紙ローラ２を押圧するゴム 等の弾性材による摩擦板３と、摩擦板３を所定の圧力で押圧する板ばね４と、用 紙１を介して給紙ローラ２を押圧し、用紙１を摩擦板３まで繰り込む板ばね５と 、摩擦板３の真中の切欠き部３ａにおいて給紙ローラ押圧面側の中央に設けられ 、用紙１を介して給紙ローラ２を押圧し、用紙１を摩擦板３まで繰り込む板ばね ６とを有してなる。[0008] In this embodiment, a paper feed roller 2 for feeding the stacked paper (original) 1 in the paper feed direction, Rubber that presses the paper feed roller 2 via the lowermost paper 1 that contacts the paper feed roller 2. A friction plate 3 made of an elastic material such as, and a leaf spring 4 for pressing the friction plate 3 with a predetermined pressure. A leaf spring 5 that pushes the paper feed roller 2 through the paper 1 and retracts the paper 1 to the friction plate 3; Provided in the center of the notch 3a in the middle of the friction plate 3 on the paper feed roller pressing surface side. , A leaf spring that presses the paper feed roller 2 through the paper 1 and retracts the paper 1 to the friction plate 3 6 and.
【０００９】 このような本実施例において、給紙ローラ２は軸７の回転方向Ｃの方向に回転 し、板ばね５及び板ばね６の押圧力により用紙１が矢印Ｄ方向に繰り込まれる。 繰り込まれた用紙１の１枚目は摩擦板３を介した板ばね４の押圧力により繰り出 され、用紙１の２枚目以降は、板ばね４の押圧により発生する摩擦板３の摩擦力 と用紙相互間のすべりにより繰り込みを停止する。[0009] In this embodiment, the paper feed roller 2 rotates in the rotation direction C of the shaft 7. Then, the sheet 1 is rewound in the direction of arrow D by the pressing force of the leaf springs 5 and 6. The first sheet of paper 1 that has been taken in is taken out by the pressing force of the leaf spring 4 through the friction plate 3. After the second sheet of paper 1, the frictional force of the friction plate 3 generated by the pressing of the leaf spring 4 is generated. The feeding is stopped by the slip between the paper and the paper.
【００１０】 次に図２（ａ），（ｂ），（ｃ）によって、板ばね５及び板ばね６による押圧 力の用紙１に対する影響を説明する。[0010] Next, as shown in FIGS. 2 (a), (b), and (c), pressing by the leaf spring 5 and the leaf spring 6 is performed. The influence of the force on the sheet 1 will be described.
【００１１】 図２（ａ）は板ばね６による用紙のたわみ状況を示す。板ばね６の押圧力Ｇ６ が大きいとたわみｙ1 が増加する。たわみｙ1 が増加するとたわみ幅Ｘがせまい 為、用紙１がしわになる。押圧力Ｇ６が小さい場合は、送らずの現象が発生する 。FIG. 2A shows how the leaf spring 6 deflects the paper. Y 1 and deflection pressing force G6 of the leaf spring 6 is larger increases. If the flexure y 1 increases, the flexure width X becomes narrower, so that the paper 1 becomes wrinkled. When the pressing force G6 is small, the phenomenon of not sending occurs.
【００１２】 図２（ｂ）は板ばね５による用紙のたわみ状況を示す。板ばね５の押圧力Ｇ５ は２ケ所で押圧する為、たわみｙ1 は２ケ所に発生する。たわみ幅Ｘは広いが、 押圧力Ｇ５が強いと用紙１の真中に負のたわみｙ2 が発生する。この負のたわみ ｙ2 によって用紙１のしわやめくれが発生する。押圧力Ｇ５が小さいと負のたわ みｙ2 は小さくなるが、送らずの現象が発生する。FIG. 2B shows how the leaf spring 5 bends the paper. Since the pressing force G5 of the leaf spring 5 for pressing in two positions, the deflection y 1 occurs in two places. Although the deflection width X is wide, a negative deflection y 2 occurs in the center of the sheet 1 when the pressing force G5 is strong. This negative deflection y 2 causes wrinkles and curling of the sheet 1. If the pressing force G5 is small, the negative deflection y 2 is small, but the phenomenon of no feeding occurs.
【００１３】 図２（ｃ）は板ばね５と板ばね６による用紙のたわみ状況を示す。用紙１を３ ケ所で押圧し、板ばね６の押圧力Ｇ６を板ばね５の押圧力Ｇ５より強くすること により、たわみ幅Ｘを広くでき、かつ負のたわみが発生しない。よって用紙１の しわやめくれ等の障害は発生しない。また、３ケ所で押圧することにより繰り込 み力が増加する為、送らず現象は発生しない。[0013] FIG. 2 (c) shows how the leaf springs 5 and 6 bend the sheet. Paper 1 to 3 Press at a certain point to make the pressing force G6 of the leaf spring 6 stronger than the pressing force G5 of the leaf spring 5. As a result, the deflection width X can be widened and negative deflection does not occur. Therefore, of paper 1 No obstacles such as wrinkles and curls occur. In addition, it is rolled in by pressing in 3 places Since the apparent force increases, the phenomenon does not occur without sending.
【００１４】 本考案の他の実施例は、図３に示すようであり、板ばね５の押圧力を板ばね６ の押圧力に比して極めて低く設定するとともに、板ばね５の給紙ローラ押圧点を 摩擦板３の給紙ローラ押圧開始点に極めて近く設定して構成したものである。[0014] Another embodiment of the present invention is shown in FIG. 3, in which the pressing force of the leaf spring 5 is applied to the leaf spring 6. The pressure is set to be extremely lower than the pressing force of, and the feed roller pressing point of the leaf spring 5 is set. The friction plate 3 is set so as to be extremely close to the starting point of pressing the paper feed roller.
【００１５】 図３に示す角度αは、板ばね５が給紙ローラ２を押圧する点から摩擦板３が給 紙ローラ２の押圧を開始する点までの角度である。この角度αを小さくすること により、図２（ｂ）に示したような用紙１の負のたわみｙ2 が大きくなる前に、 摩擦板３による押圧力で用紙１を繰り込むことができる。即ち、板ばね５の押圧 力Ｇ５を極めて小さくし、また角度αを小さくすることによって用紙１のしわや めくれの発生を防止する。The angle α shown in FIG. 3 is the angle from the point where the leaf spring 5 presses the paper feed roller 2 to the point where the friction plate 3 starts pressing the paper feed roller 2. By reducing the angle α, the sheet 1 can be retracted by the pressing force of the friction plate 3 before the negative deflection y 2 of the sheet 1 as shown in FIG. 2B becomes large. That is, the pressing force G5 of the leaf spring 5 is made extremely small and the angle α is made small to prevent the occurrence of wrinkles and curling of the sheet 1.
【００１６】 なお、摩擦板３の真中に位置し、用紙１を介して給紙ローラ２を押圧する板ば ね６は、板ばね５の押圧力を下げたことによる用紙の繰り込み力の低下を補助し 、送らず現象の発生を防止している。この板ばね６の押圧力は、負のたわみｙ2 が小さいので、図２（ｃ）に示すＧ６のように大きくする必要はない。The leaf spring 6 located in the center of the friction plate 3 and pressing the sheet feeding roller 2 via the sheet 1 assists the reduction of the sheet retraction force by reducing the pressing force of the sheet spring 5. However, the phenomenon is prevented from occurring without sending. Since the negative deflection y 2 is small, the pressing force of the leaf spring 6 does not need to be increased as in G6 shown in FIG. 2C.
【００１７】[0017]
以上説明したよに本考案は、摩擦板の真中に板ばねを設けることにより、用紙 にかかる押圧力を給紙ローラの真中に集中し、かつ摩擦板両翼の板ばねの給紙ロ ーラ押圧点を摩擦板の給紙ローラ押圧点に近づけることにより、用紙のばたつき を制御して用紙繰り込み時のさまざまな障害を防止し、使用が予測されるすべて の厚さの用紙を安定して１枚ずつ繰出しできる効果がある。 As described above, according to the present invention, by providing a leaf spring in the center of the friction plate, The pressing force on the paper feed roller is concentrated in the center of the paper feed roller, The paper flutter by bringing the roller press point closer to the paper feed roller press point of the friction plate. Control to prevent various obstacles when picking up paper, and all that is expected to be used There is an effect that it is possible to stably feed out a sheet having a thickness of one by one.
【図１】本考案の一実施例を示し、同図（ａ）は斜視
図、同図（ｂ）は同図（ａ）のＡ矢視における側面図、
同図（ｃ）は同図（ａ）のＢ−Ｂ線断面図である。1 shows an embodiment of the present invention, in which FIG. 1 (a) is a perspective view, FIG. 1 (b) is a side view in the direction of arrow A in FIG. 1 (a),
FIG. 13C is a sectional view taken along line BB of FIG.
【図２】本実施例における用紙のたわみ状況を（ａ）な
いし（ｃ）に順次に示す図である。FIGS. 2A to 2C are diagrams sequentially showing the deflection state of the sheet in the present embodiment, as shown in FIGS.
【図３】本考案の他の実施例を示す側面図である。FIG. 3 is a side view showing another embodiment of the present invention.
【図４】従来の自動給紙機構の一例を示す側面図であ
る。FIG. 4 is a side view showing an example of a conventional automatic sheet feeding mechanism.
１ 用紙 ２ 給紙ローラ ３，９ 摩擦板 ４，５，６ 板ばね ７ 軸 ８ 用紙台 Ｘ 用紙たわみ幅 ｙ1 用紙たわみ量 ｙ2 負のたわみ量 Ｇ５ 板ばね５の押圧力 Ｇ６ 板ばね６の押圧力 α 角度1 Paper 2 Feeding Rollers 3, 9 Friction Plates 4, 5, 6 Leaf Spring 7 Axis 8 Paper Stand X Paper Deflection Width y 1 Deflection of Paper y 2 Negative Deflection G5 Pressing Force of Leaf Spring 5 G6 Leaf Spring 6 Pressing force α angle
Claims (2)
方向に繰り出す給紙ローラと、この給紙ローラに接する
最下部の前記用紙を介して前記給紙ローラを押圧するゴ
ム等の弾性材の摩擦板と、この摩擦板を所定の圧力で押
圧する第１の板ばねと、前記摩擦板の両翼に位置し前記
用紙を介して前記給紙ローラを押圧し、前記用紙を前記
摩擦板まで繰り込む第２の板ばねを有する自動給紙機構
において、前記摩擦板の給紙ローラ押圧面側のほぼ中央
に設けられ前記用紙を介して前記給紙ローラを押圧し前
記用紙を前記摩擦板まで繰り込む第３の板ばねを有する
ことを特徴とする自動給紙機構。1. A paper feed roller that presses stacked sheets of paper to feed the paper in a feed direction, and an elastic material such as rubber that presses the paper feed roller via the lowermost sheet of paper in contact with the paper feed roller. Friction plate, a first leaf spring that presses the friction plate with a predetermined pressure, and the paper feed roller that is located on both wings of the friction plate and presses the paper to the friction plate. In an automatic paper feed mechanism having a second leaf spring that retracts, the paper feed roller is provided substantially at the center of the friction plate on the paper feed roller pressing surface side and presses the paper feed roller through the paper to bring the paper to the friction plate. An automatic paper feed mechanism having a third leaf spring that retracts.
板ばねの押圧力に比して低く設定し、且つ前記第２の板
ばねの給紙ローラ押圧点を前記摩擦板の給紙ローラ押圧
開始点に極めて近く設定したことを特徴とする請求項１
記載の自動給紙機構。2. The pressing force of the second plate spring is set lower than the pressing force of the third plate spring, and the feed roller pressing point of the second plate spring is set to the friction plate. 2. The sheet feeding roller pressing start point is set very close to the starting point.
The automatic paper feed mechanism described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4866991U JPH051740U (en) | 1991-06-27 | 1991-06-27 | Automatic paper feed mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4866991U JPH051740U (en) | 1991-06-27 | 1991-06-27 | Automatic paper feed mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH051740U true JPH051740U (en) | 1993-01-14 |
Family
ID=12809740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4866991U Pending JPH051740U (en) | 1991-06-27 | 1991-06-27 | Automatic paper feed mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH051740U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008239299A (en) * | 2007-03-27 | 2008-10-09 | Brother Ind Ltd | Paper feeder and image recording device having same |
-
1991
- 1991-06-27 JP JP4866991U patent/JPH051740U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008239299A (en) * | 2007-03-27 | 2008-10-09 | Brother Ind Ltd | Paper feeder and image recording device having same |
| JP4650641B2 (en) * | 2007-03-27 | 2011-03-16 | ブラザー工業株式会社 | Paper feeding device and image recording apparatus having the same |
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