JPH0320579Y2 - - Google Patents

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Publication number
JPH0320579Y2
JPH0320579Y2 JP1983175396U JP17539683U JPH0320579Y2 JP H0320579 Y2 JPH0320579 Y2 JP H0320579Y2 JP 1983175396 U JP1983175396 U JP 1983175396U JP 17539683 U JP17539683 U JP 17539683U JP H0320579 Y2 JPH0320579 Y2 JP H0320579Y2
Authority
JP
Japan
Prior art keywords
paper ejection
roller
ejection roller
drive
shaft
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
Application number
JP1983175396U
Other languages
Japanese (ja)
Other versions
JPS6085658U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP17539683U priority Critical patent/JPS6085658U/en
Publication of JPS6085658U publication Critical patent/JPS6085658U/en
Application granted granted Critical
Publication of JPH0320579Y2 publication Critical patent/JPH0320579Y2/ja
Granted legal-status Critical Current

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  • Delivering By Means Of Belts And Rollers (AREA)
  • Gears, Cams (AREA)

Description

【考案の詳細な説明】 〔考案の技術分野〕 本考案は複写機等に用いられるローラ駆動機構
の安全装置に関する。
[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a safety device for a roller drive mechanism used in a copying machine or the like.

〔従来技術及び問題点〕[Prior art and problems]

複写機においてトナー像が定着された用紙は、
複写機本体に設けられた排紙ローラ機構により、
機外に排出されるのであるが、従来の機構は排紙
ローラの回転部分が露出していて、操作者が手を
巻き込まれたりして危険であつた。
The paper on which the toner image is fixed in the copying machine is
The paper ejection roller mechanism installed in the copying machine body allows
The paper is ejected outside the machine, but in the conventional mechanism, the rotating part of the paper ejection roller was exposed, making it dangerous for the operator to get his or her hands caught.

また、これを防止するために排紙ローラ部をカ
バーで覆つたり、機械外装より奥にローラを設け
たりするものも提案されたが、紙の排出状態や、
トレーへの重なりを良くするためには好ましくな
かつた。
In addition, in order to prevent this, it has been proposed to cover the paper ejection roller section with a cover or install the roller deeper than the machine exterior, but
This was not desirable in order to improve the overlapping on the tray.

更に、ローラ軸と駆動伝達部材とは固着されて
いるのでコピー操作中、ローラは駆動されたまま
の状態である。
Further, since the roller shaft and the drive transmission member are fixed, the roller remains driven during the copying operation.

他の従来例としてコロを駆動する一連の伝導軸
の途中に摩擦係合部を設けたものや、スリツプ機
構を設けたものが提案されている。
Other conventional examples have been proposed in which a frictional engagement portion is provided in the middle of a series of transmission shafts that drive the rollers, and in which a slip mechanism is provided.

しかし、これらの欠点として高負荷が加わつた
場合に、他の駆動系に損傷を与えたり、高負荷除
去後の復帰が容易でなかつた。
However, these disadvantages include damage to other drive systems when a high load is applied, and recovery after removal of a high load is not easy.

〔考案の目的〕[Purpose of invention]

本考案は、排紙ローラに万一手が触れてもロー
ラの駆動が停止され、安全にコピーを行えるとと
もに、復帰も容易であるローラ駆動機構を提供す
ることを目的とする。
SUMMARY OF THE INVENTION An object of the present invention is to provide a roller drive mechanism that stops the drive of the rollers even if a hand touches the paper ejection rollers, allows safe copying, and allows for easy recovery.

〔考案の要点〕[Key points of the idea]

本考案は上記目的を達成するために、装置外部
から接触可能に構成された排紙ローラを駆動する
排紙ローラ駆動機構において、磁性体よりなる排
紙ローラ軸と、該排紙ローラ軸に遊嵌される軸穴
と該軸穴内面に開口を有する凹部が形成された非
磁性材料より成る駆動ギヤと、前記凹部内に摺動
自在に収納された磁気吸着部材とを有し、該磁気
吸着部材が前記排紙ローラ軸に吸着することによ
り前記駆動ギヤより前記排紙ローラ軸に駆動力が
伝達され、前記排紙ローラを所定以上の負荷が加
わつた際、前記排紙ローラ軸に対して前記駆動ギ
ヤがスリツプし前記排紙ローラ軸への駆動力が遮
断されることを特徴とする。
In order to achieve the above object, the present invention provides a paper ejection roller drive mechanism that drives a paper ejection roller that is configured to be accessible from the outside of the apparatus. The drive gear is made of a non-magnetic material and has a shaft hole to be fitted, a recess with an opening on the inner surface of the shaft hole, and a magnetic attraction member slidably housed in the recess. When the member is attracted to the paper ejection roller shaft, driving force is transmitted from the drive gear to the paper ejection roller shaft, and when a load of more than a predetermined value is applied to the paper ejection roller, the drive force is transmitted to the paper ejection roller shaft. The present invention is characterized in that the driving gear slips and the driving force to the paper ejection roller shaft is cut off.

〔考案の実施例〕[Example of idea]

次に、図面に従つて本考案のローラ駆動機構に
ついて詳述する。
Next, the roller drive mechanism of the present invention will be described in detail with reference to the drawings.

ローラ駆動機構は、駆動ローラ21と従動ロー
ラ22とから成り、従動ローラ22は、側板23
a,23bに軸受24a,24bで回転自在に支
持されている。
The roller drive mechanism consists of a drive roller 21 and a driven roller 22, and the driven roller 22 is connected to a side plate 23.
a, 23b and rotatably supported by bearings 24a, 24b.

また従動ローラ22は、芯金25に複数個のロ
ーラ26が適宜な間〓で固定されて成り立つてい
る。
Further, the driven roller 22 is made up of a plurality of rollers 26 fixed to a core metal 25 at appropriate intervals.

駆動ローラ21は、芯金27に複数個のローラ
28が適宜な間〓で固定され、該芯金27の両端
は軸受29a,29bで側板23a,23bに回
転自在に軸支されている。そして、駆動ローラ2
1のローラ28と従動ローラ22のローラ26と
は、互いに接触して摺動回転する。
In the drive roller 21, a plurality of rollers 28 are fixed to a core metal 27 at appropriate intervals, and both ends of the core metal 27 are rotatably supported on side plates 23a and 23b by bearings 29a and 29b. And drive roller 2
The roller 28 of No. 1 and the roller 26 of the driven roller 22 contact each other and slide and rotate.

一方、駆動ローラ21の一端で側板23aの外
側には、ギア30が係止されている。
On the other hand, a gear 30 is locked at one end of the drive roller 21 and on the outside of the side plate 23a.

ギア30は第4図に示すように、歯車32とガ
イド突起33と一対の腕34とから構成されてい
る。
As shown in FIG. 4, the gear 30 is composed of a gear 32, a guide protrusion 33, and a pair of arms 34.

ガイド突起33は、腕34より長く、該腕34
を挟み込むような位置に間〓を有して立設されて
いる。
The guide projection 33 is longer than the arm 34, and the guide projection 33 is longer than the arm 34.
It is erected with a space between the two.

腕34は弾性を有し、先端に半球部34aがそ
れぞれ設けられている。
The arms 34 are elastic and each has a hemispherical portion 34a at its tip.

また、駆動ローラ21の芯金27のギア30の
係止される側には、係合穴35が穿設され、その
先にはリング溝36が刻設されている。
Further, an engagement hole 35 is formed on the side of the core metal 27 of the drive roller 21 on which the gear 30 is engaged, and a ring groove 36 is formed beyond the engagement hole 35 .

以上の構成のギア30は、駆動ローラ21の芯
金27に第2図に示すように挿貫されており、腕
34の半球部34aは、該芯金27の係合穴35
に係止して止まつている。また、ガイド突起33
はリング溝36に係止されたリング37で抜け止
めされている。
The gear 30 having the above configuration is inserted into the core metal 27 of the drive roller 21 as shown in FIG.
It is locked and stopped. In addition, the guide protrusion 33
is prevented from coming off by a ring 37 that is locked in a ring groove 36.

一方ギア30は本体の駆動源(図示せず)で駆
動されたギア31と噛合している。
On the other hand, the gear 30 meshes with a gear 31 driven by a drive source (not shown) of the main body.

次に本考案の動作について説明する。 Next, the operation of the present invention will be explained.

複写機の定着行程で画像の定着された用紙は排
紙ローラにより、機外に排出される。
A sheet of paper on which an image has been fixed in the fixing process of a copying machine is discharged from the machine by a paper discharge roller.

今、複写機の操作者が誤つて、排出ローラに指
を触れると駆動ローラ21には所定以上の負荷が
加わる。すると、歯車32の回転力は弾性を有す
る腕34を介して軸27に伝達されていたわけで
あるが、腕34の半球部34aと係合穴35の係
合が脱れて第3図に示す状態となる。
Now, if the operator of the copying machine accidentally touches the discharge roller with his finger, a load exceeding a predetermined value is applied to the drive roller 21. Then, the rotational force of the gear 32 was transmitted to the shaft 27 via the elastic arm 34, but the hemispherical portion 34a of the arm 34 and the engagement hole 35 disengaged, as shown in FIG. state.

弾性腕34は、係合穴35と係合する方向に弾
性力を有すが、所定上の負荷が加わつた場合は、
係合は脱れ、ローラは駆動されない。
The elastic arm 34 has elastic force in the direction of engagement with the engagement hole 35, but when a predetermined load is applied,
The engagement is disengaged and the roller is not driven.

更に、過大負荷が除かれれば、自動的に駆動ロ
ーラ21はギア30,31により駆動が開始す
る。
Further, when the excessive load is removed, the drive roller 21 automatically starts being driven by the gears 30 and 31.

ここで、ギア30の材質は金属で一体に形成し
てもよく、また、合成樹脂で一体に成形してもよ
い。
Here, the material of the gear 30 may be integrally formed from metal, or may be integrally formed from synthetic resin.

また、ギア30はガイド突起33をリング37
で係止されているので、腕34の先端がリングに
当接することなく円滑に回転する。
Further, the gear 30 connects the guide protrusion 33 to the ring 37.
Since the end of the arm 34 rotates smoothly without coming into contact with the ring.

本考案の他の実施例として、第5,6図に示す
ように、ギア38は非磁性体で作られ、軸穴39
に放射状のスリツト40が複数個穿設されてい
る。また、該スリツト40には磁石41が摺動可
能に埋め込まれている。
In another embodiment of the present invention, as shown in FIGS. 5 and 6, the gear 38 is made of non-magnetic material, and the shaft hole 39
A plurality of radial slits 40 are bored in the. Further, a magnet 41 is slidably embedded in the slit 40.

一方、駆動ローラの軸42は、鉄等の磁性体で
作られており、先端の溝43には、リング37が
嵌合されている。
On the other hand, the drive roller shaft 42 is made of a magnetic material such as iron, and a ring 37 is fitted into a groove 43 at the tip.

以上のように構成されたギア38は複写機本体
(図示せず)に設けられた駆動機構にて駆動され
たギア31と噛合し、回転する。
The gear 38 configured as described above meshes with the gear 31 driven by a drive mechanism provided in the main body of the copying machine (not shown) and rotates.

一方、複数個の磁石41は磁性体でできた軸4
2に磁着するとともに、該ギア38の放射状スリ
ツト40に摺動自在に埋め込まれているので、ギ
ア38が回転すると軸42も一体となつて回転す
る。
On the other hand, the plurality of magnets 41 are connected to a shaft 4 made of a magnetic material.
2 and is slidably embedded in the radial slit 40 of the gear 38, so when the gear 38 rotates, the shaft 42 also rotates together.

ここで、排紙ローラに操作者の手が触れる等し
て高負荷が加わつた場合に、ギア38と軸42は
磁石41による磁力結合であるので、磁着力以上
の負荷に対してスリツプし伝達が遮断される。
Here, when a high load is applied due to the operator's hand touching the paper ejection roller, the gear 38 and the shaft 42 are magnetically coupled by the magnet 41, so the load exceeding the magnetic force will slip and be transmitted. is blocked.

〔考案の効果〕[Effect of idea]

以上説明した本考案ローラ駆動機構によれば排
紙ローラに高負荷がかかつた場合に、駆動力が遮
断されローラが停止するので、万一、操作者が手
を触れたりしても安全である。
According to the roller drive mechanism of the present invention described above, when a high load is applied to the paper ejection roller, the driving force is cut off and the roller stops, so it is safe even if the operator touches it. be.

更に、高負荷が取り除かれた場合にも、駆動機
構の復帰が容易であり、他の駆動系に損傷を与え
ることもない。
Furthermore, even when a high load is removed, the drive mechanism can be easily returned to its original state without damaging other drive systems.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本考案の一実施例を示す斜視図、第
2図はその要部断面図、第3図は作動状態を示す
一部切欠図、第4図は第一実施例を示す一部切欠
斜視図、第5図は本考案の他の実施例を示す断面
図、第6図はその側面図である。 21……駆動ローラ、22……従動ローラ、2
3a,23b……側板、24a,24b,29
a,29b……軸受、25,27……芯金、2
6,28……ローラ、30,31,38……ギ
ア、32……歯車、33……ガイド突起、34…
…腕、34a……半球部、35……係合穴、36
……溝、37……リング、39……軸穴、40…
…スリツト、41……磁石、42……軸。
Fig. 1 is a perspective view showing one embodiment of the present invention, Fig. 2 is a sectional view of the main part thereof, Fig. 3 is a partially cutaway view showing the operating state, and Fig. 4 is a diagram showing the first embodiment. FIG. 5 is a sectional view showing another embodiment of the present invention, and FIG. 6 is a side view thereof. 21... Drive roller, 22... Followed roller, 2
3a, 23b...Side plate, 24a, 24b, 29
a, 29b... Bearing, 25, 27... Core metal, 2
6, 28...Roller, 30, 31, 38...Gear, 32...Gear, 33...Guide protrusion, 34...
...Arm, 34a... Hemispherical part, 35... Engagement hole, 36
...Groove, 37...Ring, 39...Shaft hole, 40...
...Slit, 41...Magnet, 42...Axis.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 装置外部から接触可能に構成された排紙ローラ
を駆動する排紙ローラ駆動機構において、磁性体
よりなる排紙ローラ軸と、該排紙ローラ軸に遊嵌
される軸穴と該軸穴内面に開口を有する凹部が形
成された非磁性材料より成る駆動ギヤと、前記凹
部内に摺動自在に収納された磁気吸着部材とを有
し、該磁気吸着部材が前記排紙ローラ軸に吸着す
ることにより前記駆動ギヤより前記排紙ローラ軸
に駆動力が伝達され、前記排紙ローラを所定以上
の負荷が加わつた際、前記排紙ローラ軸に対して
前記駆動ギヤがスリツプし前記排紙ローラ軸への
駆動力が遮断されることを特徴とするローラ駆動
機構。
In a paper ejection roller drive mechanism that drives a paper ejection roller configured to be accessible from the outside of the device, a paper ejection roller shaft made of a magnetic material, a shaft hole that is loosely fitted to the paper ejection roller shaft, and an inner surface of the shaft hole are provided. A drive gear made of a non-magnetic material in which a recessed portion having an opening is formed, and a magnetic attraction member slidably housed in the recessed portion, and the magnetic attraction member is attracted to the paper ejection roller shaft. The drive force is transmitted from the drive gear to the paper ejection roller shaft, and when a load of more than a predetermined value is applied to the paper ejection roller, the drive gear slips with respect to the paper ejection roller shaft, causing the paper ejection roller shaft to slip. A roller drive mechanism characterized in that the driving force to the roller is cut off.
JP17539683U 1983-11-15 1983-11-15 Paper ejection roller drive mechanism Granted JPS6085658U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17539683U JPS6085658U (en) 1983-11-15 1983-11-15 Paper ejection roller drive mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17539683U JPS6085658U (en) 1983-11-15 1983-11-15 Paper ejection roller drive mechanism

Publications (2)

Publication Number Publication Date
JPS6085658U JPS6085658U (en) 1985-06-13
JPH0320579Y2 true JPH0320579Y2 (en) 1991-05-02

Family

ID=30381606

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17539683U Granted JPS6085658U (en) 1983-11-15 1983-11-15 Paper ejection roller drive mechanism

Country Status (1)

Country Link
JP (1) JPS6085658U (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2515441B2 (en) * 1991-04-25 1996-07-10 三田工業株式会社 Image forming device
JP6282077B2 (en) * 2013-10-04 2018-02-21 キヤノン株式会社 CONNECTION DEVICE, SHEET CONVEYING DEVICE, AND DRIVE TRANSMISSION DEVICE

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5548111A (en) * 1978-09-28 1980-04-05 Matsushita Electric Works Ltd Driver for belt conveyor
JPS57167059A (en) * 1981-04-07 1982-10-14 Minolta Camera Co Ltd Original feeder

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55119317U (en) * 1979-02-15 1980-08-23

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5548111A (en) * 1978-09-28 1980-04-05 Matsushita Electric Works Ltd Driver for belt conveyor
JPS57167059A (en) * 1981-04-07 1982-10-14 Minolta Camera Co Ltd Original feeder

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Publication number Publication date
JPS6085658U (en) 1985-06-13

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