JPH10153929A - Abnormal torque detection device for image forming device - Google Patents

Abnormal torque detection device for image forming device

Info

Publication number
JPH10153929A
JPH10153929A JP8311573A JP31157396A JPH10153929A JP H10153929 A JPH10153929 A JP H10153929A JP 8311573 A JP8311573 A JP 8311573A JP 31157396 A JP31157396 A JP 31157396A JP H10153929 A JPH10153929 A JP H10153929A
Authority
JP
Japan
Prior art keywords
gear
load
image forming
torque
abnormal
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
Application number
JP8311573A
Other languages
Japanese (ja)
Inventor
Yukitomo Shigemori
幸友 重森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox Co Ltd
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 by Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP8311573A priority Critical patent/JPH10153929A/en
Publication of JPH10153929A publication Critical patent/JPH10153929A/en
Pending legal-status Critical Current

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  • Control Or Security For Electrophotography (AREA)
  • Electrophotography Configuration And Component (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a device detecting abnormal torque imposed on the driving gear train of an image forming device such as a copying machine and informing it to a user. SOLUTION: By the output gear 12 of a motor 12, plural gears 14 and 16 are driven. By the respective gear trains, the loads of a paper feeding device L1 , a process unit L2 and a fixing device L3 constituting the image forming device are driven. The respective gear trains are provided with a torque limiter 100 and the limiters 100 are actuated when the respective loads L1 , L2 and L3 become abnormal and the torque thereof becomes equal to or over a regulated value so as to cut off the transmission of power. By sensors 40 and 80, the stop of the gear is detected and transmitted to a CPU 200. By the CPU 200, the abnormal load is displayed on a display device 210 so as to be informed to the user.

Description

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

【0001】[0001]

【発明の属する技術分野】本発明の複写機、複合機、プ
リンター等の画像形成装置における負荷装置に作用する
異常トルクを検知する装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for detecting an abnormal torque acting on a load device in an image forming apparatus such as a copying machine, a multifunction peripheral, and a printer according to the present invention.

【0002】[0002]

【従来の技術】複写機等の画像形成装置は、感光体ドラ
ムや現像器を含むプロセスカートリッジや定着器、紙送
り装置等の回転負荷装置を備え、これらの負荷装置をモ
ータとギヤトレインにより駆動している。ギヤトレイン
は、1個のモータの出力ギヤに数10個のギヤが噛合さ
れる複雑な駆動機構であり、また、各回転負荷装置にか
かる負荷もかなり大きなトルクとなる。
2. Description of the Related Art An image forming apparatus such as a copying machine is provided with a rotational load device such as a process cartridge including a photosensitive drum and a developing device, a fixing device, and a paper feed device. These load devices are driven by a motor and a gear train. doing. The gear train is a complicated drive mechanism in which several tens of gears are meshed with the output gear of one motor, and the load applied to each rotary load device also has a considerably large torque.

【0003】また、各負荷装置には紙づまり等の異常な
負荷がかかる場合がある。例えば、実開昭63−188
658号公報は駆動モータの負荷電流を検出し、負荷電
流が所定の値を超えたときに、異常を検出する技術を開
示する。同様に、特開平5−304718号公報は駆動
電流を電圧のデジタル値に交換し、定格値と比較して過
負荷を表示する技術を開示している。また、特開平7−
243511号公報は、駆動力伝達用の部材に過負荷が
かかったときには、シャフト等を変形又は破断すること
によって駆動伝達を断つものが開示されている。
[0003] In addition, an abnormal load such as a paper jam may be applied to each load device. For example, Japanese Utility Model Laid-Open No. 63-188
Japanese Patent Application Publication No. 658 discloses a technique for detecting a load current of a drive motor and detecting an abnormality when the load current exceeds a predetermined value. Similarly, Japanese Patent Laying-Open No. 5-304718 discloses a technique in which a drive current is exchanged for a digital value of a voltage and compared with a rated value to indicate an overload. In addition, Japanese Patent Application Laid-Open
Japanese Patent Publication No. 243511 discloses a configuration in which, when an overload is applied to a driving force transmitting member, a shaft or the like is deformed or broken to cut off the driving transmission.

【0004】[0004]

【発明が解決しようとする課題】本発明は、駆動モータ
の電流値等によりオーバーロードを検知することにかえ
て、モータの出力軸と負荷装置との間のギヤトレインに
トルクリミッタを備えて、オーバーロード状態の負荷装
置への駆動力の伝達を断つことにより、ユーザが対応で
きるようにしたものである。
According to the present invention, a torque limiter is provided in a gear train between an output shaft of a motor and a load device, instead of detecting overload based on a current value or the like of a drive motor. The transmission of the driving force to the load device in the overloaded state is cut off so that the user can respond.

【0005】[0005]

【課題を解決するための手段】本発明の画像形成装置の
異常トルク検知装置は、1個のモータと、該モータの出
力軸の噛合する複数の歯車列と、各歯車列により駆動さ
れる画像形成装置の負荷装置とを有し、各歯車列の途中
に設けられるトルクリミッタと、トルクリミッタと負荷
装置の間に配設されてギヤの停止を検知するセンサと、
センサの情報を受ける処理手段と、表示手段とを備え、
処理手段は、トルクリミッタが作動した歯車列の異常に
関するデータを表示装置に表示する機能を有する。
An abnormal torque detecting device for an image forming apparatus according to the present invention comprises a motor, a plurality of gear trains meshing with an output shaft of the motor, and an image driven by each gear train. Having a load device of the forming device, a torque limiter provided in the middle of each gear train, a sensor disposed between the torque limiter and the load device to detect the stop of the gear,
A processing unit for receiving information from the sensor, and a display unit,
The processing means has a function of displaying data on an abnormality of the gear train on which the torque limiter has operated on the display device.

【0006】[0006]

【発明の実施の形態】図1は本発明の画像形成装置の異
常トルク検知装置の概要を示す説明図である。モータ1
0は、電源Pからライン2を介して電力の供給を受け、
ライン2の途中にモータのスイッチ4が設けられる。モ
ータ10の出力軸ギヤ12は、2個のギヤ14,16を
駆動する。第1のギヤ14は、第1の負荷L1のギヤ列
を駆動する。第1のギヤ14はギヤ22を駆動し、ギヤ
22のシャフト20にとりつけられたギヤ24はギヤ2
6を駆動する。
FIG. 1 is an explanatory view showing an outline of an abnormal torque detecting device for an image forming apparatus according to the present invention. Motor 1
0 receives power from the power supply P via line 2;
A motor switch 4 is provided in the middle of the line 2. The output shaft gear 12 of the motor 10 drives two gears 14 and 16. The first gear 14 drives a gear train with a first load L1. The first gear 14 drives the gear 22, and the gear 24 attached to the shaft 20 of the gear 22 is the gear 2.
6 is driven.

【0007】第1の負荷L1は、例えばプロセスカート
リッジは紙送り装置である。プロセスカートリッジはカ
ートリッジ内のトナーの固化による負荷を有し、紙送り
装置は複数のロール、ベルト等の負荷を有する。ギヤ2
2のシャフト20に、トルクリミッタ100を装備し、
負荷L1に負荷が作用したときには、このトルクリミッ
タ100がスリップし、負荷L1への動力伝達を断つ。
The first load L 1 is, for example, a process cartridge is a paper feeder. The process cartridge has a load due to solidification of the toner in the cartridge, and the paper feeder has a load of a plurality of rolls, belts and the like. Gear 2
The second shaft 20 is equipped with a torque limiter 100,
When the load is applied to the load L 1, the torque limiter 100 slips, cut off the power transmission to the load L 1.

【0008】トルクリミッタ100は、図2に示す構造
を有し、ハブ110上にニードルベアリング112を介
して2枚の摩擦板120,122を対向して配設し、一
方の摩擦板120をハブ110側に他方の摩擦板122
をプレート側に対応させる。プレート130の摩擦板1
22への押圧力は皿バネ132で発生させ、調整ナット
140でバネ力を調整する。一方の部材をハブ110に
連結し、他方の部材をプレート130にとりつけること
で、ハブ110とプレート130の間に過大なトルクが
作用したときには、摩擦板120,122の間がスリッ
プしてトルク伝達を断つ。
The torque limiter 100 has a structure shown in FIG. 2, and two friction plates 120 and 122 are disposed on a hub 110 via a needle bearing 112 so as to face each other. The other friction plate 122 on the 110 side
Correspond to the plate side. Friction plate 1 of plate 130
The pressing force on 22 is generated by a disc spring 132, and the adjusting nut 140 adjusts the spring force. By connecting one member to the hub 110 and attaching the other member to the plate 130, when an excessive torque acts between the hub 110 and the plate 130, the friction plates 120 and 122 slip to cause torque transmission. Sever.

【0009】リミッタ100が作用して、その下流側の
ギヤの回転が停止すると、センサ40がこれを検知して
CPU200に報告する。CPU200は、この情報に
より、負荷L1に異常トルクが発生して駆動が停止した
旨を表示装置210に表示する。ユーザはこの表示によ
り負荷L1を点検し、紙づまり等の異常トルクの原因を
排除することができる。
When the limiter 100 operates to stop the rotation of the downstream gear, the sensor 40 detects this and reports it to the CPU 200. CPU200 is this information, driving the abnormal torque occurs in the load L 1 is displayed on the display device 210 that it has stopped. The user check the load L 1 by the display, it is possible to eliminate the cause of the abnormal torque, such as paper jams.

【0010】同様に第2のギヤ16が駆動するギヤ列
は、第2の負荷L2と第3の負荷L3を駆動する。第2の
負荷L2は例えば定着器であり、第3の負荷L3は例えば
感光体ドラムや現像器をユニット化したプロセスカート
リッジである。
Similarly, the gear train driven by the second gear 16 drives the second load L 2 and the third load L 3 . Second load L 2 is, for example, fuser, third load L 3 is a process cartridge unitized example, a photosensitive drum and a developing unit.

【0011】定着器の負荷やプロセスカートリッジの負
荷は紙送り装置の負荷に比べては小さい。しかしなが
ら、異常トルクが作用することを考慮して、ギヤ16に
噛み合うギヤ52の軸50にトルクリミッタ100を介
在させてある。負荷L2,L3にオーバーロードが作用し
てトルクリミッタ100が動力伝達を断つと、下流側の
ギヤ60は回転を停止する。
The load on the fixing device and the load on the process cartridge are smaller than the load on the paper feeder. However, the torque limiter 100 is interposed on the shaft 50 of the gear 52 that meshes with the gear 16 in consideration of the abnormal torque acting. When overloads act on the loads L 2 and L 3 and the torque limiter 100 cuts off the power transmission, the downstream gear 60 stops rotating.

【0012】センサ80は、ギヤ60の停止を検知し、
CPU200に報告する。CPU200はこれを受け
て、負荷L2、又はL3にオーバーロードが発生している
旨を表示装置210に表示し、ユーザの対処を待つ。ユ
ーザが機械の運転開始時等にスイッチ4を投入すると、
負荷に異常があれば、上述した機能によりすぐに異常の
ある負荷を知ることができる。
The sensor 80 detects the stop of the gear 60,
Report to CPU 200. In response to this, the CPU 200 displays on the display device 210 that an overload has occurred in the load L 2 or L 3 , and waits for a user action. When the user turns on the switch 4 at the start of the operation of the machine, etc.,
If there is an abnormality in the load, the abnormal load can be immediately known by the above-described function.

【0013】[0013]

【発明の効果】本発明は以上のように、画像形成装置の
駆動系にあって1個のモータにより複数のギヤ列を介し
て、紙送り装置、プロセスカートリッジ、定着装置等の
複数の負荷を駆動する装置のギヤ列の途中に機械的なト
ルクリミッタを備えたものである。そして、トルクリミ
ッタと負荷との間のギヤを停止するセンサを備えて、こ
のセンサの信号をCPUに送り、表示装置に異常トルク
が作用した負荷を表示する。ユーザはこの表示をみて、
異常トルクが作用した装置を点検し、修復することが可
能となり、異常発生毎に機械を停止してサービスマンを
待つ必要はなくなる。
As described above, according to the present invention, a plurality of loads such as a paper feeder, a process cartridge, and a fixing device are provided by a single motor through a plurality of gear trains in a drive system of an image forming apparatus. A mechanical torque limiter is provided in the middle of the gear train of the driving device. A sensor for stopping a gear between the torque limiter and the load is provided, and a signal from the sensor is sent to the CPU to display a load on which abnormal torque is applied on a display device. The user sees this display,
It is possible to inspect and repair the device subjected to the abnormal torque, and it is not necessary to stop the machine and wait for a service person every time an abnormality occurs.

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

【図1】 本発明の構成を示す説明図。FIG. 1 is an explanatory diagram showing a configuration of the present invention.

【図2】 トルクリミッタの構造を示す断面図。FIG. 2 is a sectional view showing the structure of a torque limiter.

【符号の説明】[Explanation of symbols]

4 モータスイッチ、 10 駆動モータ、 12 モ
ータ出力ギヤ、 14第1の駆動ギヤ、 16 第2の
駆動ギヤ、 40,80 センサ、 100トルクリミ
ッタ、 200 CPU、 210 表示装置。
Reference Signs List 4 motor switch, 10 drive motor, 12 motor output gear, 14 first drive gear, 16 second drive gear, 40,80 sensor, 100 torque limiter, 200 CPU, 210 display device.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 画像形成装置の駆動装置にかかる異常ト
ルクの検知装置であって、1個のモータと、該モータの
出力軸と噛合する複数の歯車列と、各歯車列により駆動
される画像形成装置の負荷装置とを有し、各歯車列の途
中に設けられるトルクリミッタと、トルクリミッタと負
荷装置の間に配設されてギヤの停止を検知するセンサ
と、センサの情報を受ける処理手段と、表示手段とを備
え、 処理手段は、トルクリミッタが作動した歯車列の異常に
関するデータを表示装置に表示する画像形成装置の異常
トルク検知装置。
An apparatus for detecting abnormal torque applied to a driving device of an image forming apparatus, comprising: a motor; a plurality of gear trains meshing with an output shaft of the motor; and an image driven by each gear train. A torque limiter provided in the middle of each gear train, a sensor provided between the torque limiter and the load device for detecting a gear stop, and a processing means for receiving information from the sensor. And a display unit. The processing unit is an abnormal torque detection device of the image forming apparatus that displays data on an abnormality of the gear train on which the torque limiter is operated on the display device.
JP8311573A 1996-11-22 1996-11-22 Abnormal torque detection device for image forming device Pending JPH10153929A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8311573A JPH10153929A (en) 1996-11-22 1996-11-22 Abnormal torque detection device for image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8311573A JPH10153929A (en) 1996-11-22 1996-11-22 Abnormal torque detection device for image forming device

Publications (1)

Publication Number Publication Date
JPH10153929A true JPH10153929A (en) 1998-06-09

Family

ID=18018863

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8311573A Pending JPH10153929A (en) 1996-11-22 1996-11-22 Abnormal torque detection device for image forming device

Country Status (1)

Country Link
JP (1) JPH10153929A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002127581A (en) * 2000-10-24 2002-05-08 Tohoku Ricoh Co Ltd Stencil printing apparatus
JP2014095747A (en) * 2012-11-07 2014-05-22 Konica Minolta Inc Sheet conveying device, image forming apparatus, and push-in amount adjustment method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002127581A (en) * 2000-10-24 2002-05-08 Tohoku Ricoh Co Ltd Stencil printing apparatus
JP2014095747A (en) * 2012-11-07 2014-05-22 Konica Minolta Inc Sheet conveying device, image forming apparatus, and push-in amount adjustment method
US8913933B2 (en) 2012-11-07 2014-12-16 Konica Minolta, Inc. Paper conveying device, image forming apparatus, and push-in amount adjusting method

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