JPS58182679A - Contacting and leaving mechanism of pressing member - Google Patents

Contacting and leaving mechanism of pressing member

Info

Publication number
JPS58182679A
JPS58182679A JP57065741A JP6574182A JPS58182679A JP S58182679 A JPS58182679 A JP S58182679A JP 57065741 A JP57065741 A JP 57065741A JP 6574182 A JP6574182 A JP 6574182A JP S58182679 A JPS58182679 A JP S58182679A
Authority
JP
Japan
Prior art keywords
cam
cleaning
roller
contact
photoreceptor
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
JP57065741A
Other languages
Japanese (ja)
Inventor
Tatsutoshi Hashimoto
達鋭 橋本
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.)
Olympus Corp
Original Assignee
Olympus Corp
Olympus Optical 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 Olympus Corp, Olympus Optical Co Ltd filed Critical Olympus Corp
Priority to JP57065741A priority Critical patent/JPS58182679A/en
Publication of JPS58182679A publication Critical patent/JPS58182679A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/0005Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
    • G03G21/0058Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a roller or a polygonal rotating cleaning member; Details thereof, e.g. surface structure

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To allow a pressing member such as a cleaning member and a pressed member such as a photoreceptor to contact and leave each other with constant contacting pressure without any damage by permitting both members to contact and leave each other by a cam member through a spring member. CONSTITUTION:An output shaft 16 in a noncleaning state is rotated by a specified extent to turn a lever 11 by an eccentric cam 17. Consequently, the lever 11 elevates one end 14 of a roll arm 12 through the spring member 15. Therefore, the roll arm 12 turns around a fulcrum 10 until a cleaning roll 1 supported at the other end of the arm 12 abuts on the photoreceptor 3. Since the eccentric cam 17 further rotates even after the roll arm 12 stops, the eccentric cam 17 and roll arm 12 leave each other and the spring member 15 expands to press the cleaning roll 1 against the photoreceptor 3 with constant pressure. Thus, the pressing member and pressed member are permitted to contact and leave each other with the specified pressure without being damaged.

Description

【発明の詳細な説明】 本発明は押圧部材の接lII+1A構に関し、特に電子
写真複写機のクリーニング部材、転写ローラ、定着ロー
ラ等の常時接触又は圧着の必要のない押圧部材を、任意
に接離できるようにした押圧部材の接離機構に関するも
のである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a contact lII+1A structure of a pressing member, and in particular, a pressing member that does not require constant contact or pressure bonding, such as a cleaning member of an electrophotographic copying machine, a transfer roller, a fixing roller, etc. The present invention relates to a mechanism for approaching and separating a pressing member.

例えば電子写真複写機では、帯電、露光、現像、転ず、
除電等の一連の複写工程において、感光体上に現像した
トナー像を全て転写しきれないため、この感光体を連続
して使用するにはこのような米松ず残留トナーを除去す
るクリーニング工程が必要となる。従来、このクリーニ
ング工程は、クリーニングブレード、ブラシ、−ウェブ
寺を感光体表面上に圧接させることにより、残留トナー
を掻き落していた。この場合クリーニングブレード等の
クリーニング部材は、常時感光体に接触しているとクリ
ーニング部材にクセが生じたり、時には感光体の劣化を
ひき起こす危れがあるため常時感光体と接触しないこと
が望ましい。又、感光体上に一度形成した静電潜像によ
り複数枚僕¥を行なう所謂リテンションタイプの複写機
においては、この静電潜像を劣化させないために、複数
枚複写中はクリーニング部材は感光体から離しておかな
ければならない。これらの場合、クリーニング部材を接
離する手段としてクリーニング部材又はその、支持部材
をソレノイドにより直接移蛎させるこへにより行なうも
のがある。
For example, in an electrophotographic copying machine, charging, exposure, development, transfer,
During a series of copying processes such as neutralization, not all of the developed toner image can be transferred onto the photoconductor, so a cleaning process is required to remove the remaining toner in order to use this photoconductor continuously. becomes. Conventionally, in this cleaning process, residual toner was scraped off by pressing a cleaning blade, brush, or web onto the surface of the photoreceptor. In this case, it is desirable that the cleaning member such as a cleaning blade not be in constant contact with the photoreceptor because if it is in constant contact with the photoreceptor, it may cause the cleaning member to become curly or even cause deterioration of the photoreceptor. In addition, in a so-called retention type copying machine that prints multiple sheets using an electrostatic latent image once formed on the photoreceptor, the cleaning member does not move the photoreceptor while copying multiple sheets in order to prevent the electrostatic latent image from deteriorating. must be kept away from. In these cases, the cleaning member or its support member is moved directly by a solenoid as a means for moving the cleaning member toward and away from the cleaning member.

しかし、クリーニング部材等の自重が大きfJ)つたり
、このクリーニング部材等に所定の接触圧を得るための
加圧機構がある場合、このソレノイドは相当大!管なり
、作動時に大きな振動が発生するのみならず、クリーニ
ング部材および感光体等に傷が発生する危れがあるとい
う欠点がある。このような欠点を緩和するためにはソレ
ノイドにダンパ等の衝撃吸収機構を必要とし、構成が複
雑になるという欠点がある。
However, if the cleaning member, etc. has a large weight, or if the cleaning member, etc. has a pressure mechanism to obtain a predetermined contact pressure, this solenoid will be quite large! The drawback is that not only large vibrations are generated during operation, but also there is a risk of scratches on the cleaning member, photoreceptor, etc. In order to alleviate such drawbacks, a shock absorbing mechanism such as a damper is required for the solenoid, which has the drawback of complicating the structure.

本発明の目的は、上述した欠点を除去し、押圧部材であ
るクリーニング部材等および被抑圧部材である感光体等
が損傷することなく簡単かつ確実に、さらに−宇の接触
圧をもって内省を接離できる押圧部材の接離機構を提供
しようとするものである。
An object of the present invention is to eliminate the above-mentioned drawbacks, and to easily and reliably contact the cleaning member, which is a pressing member, and the photoreceptor, which is a suppressed member, with a contact pressure of - The present invention aims to provide a mechanism for bringing a pressing member into and out of contact with each other.

本発明は被押圧部材に対して選択的に押圧すべき抑圧部
材を支持する揺動自在の第1の部材と、この第1の部材
と平行な平3面内で揺動自在に枢支された第2の部材と
、これら第1および第2の部材の間に回転自在に設けら
れたカム部材と、前記第1および第2の部材間に張架さ
れ、これら第1および第2の部材を前記カム部材に向け
て弾性的に偏倚するばね部材とを具え、前記カム部材が
第1の位置を占めるときは第1および第2の部材がカム
部材に当接して前記抑圧部材を被押圧部材から離間させ
、前記カム部材が第2の位置を占めるときは前記第2の
部材のみがカム部材に当接して押圧部材を被押圧部材に
ばね部材による一定のばね力によって弾性的に押圧させ
るよう構成したことを特徴とすφものである。
The present invention includes a swingable first member that supports a suppressing member to selectively press against a pressed member, and a swingable first member that is swingably supported within three planes parallel to the first member. a cam member rotatably provided between the first and second members; a cam member stretched between the first and second members; a spring member elastically biased toward the cam member, and when the cam member is in a first position, the first and second members abut against the cam member and press the suppressing member. When the cam member is separated from the member and the cam member occupies a second position, only the second member contacts the cam member to elastically press the pressing member against the pressed member by a constant spring force of the spring member. It is characterized by being configured as follows.

以下図面を参照して本発明を詳述する。The present invention will be described in detail below with reference to the drawings.

第1図・は本発明による押圧部材の接離機構を適用する
複写機のクリーナユニットを示す断面図である。基体(
紙管)表面に短毛繊維を設けたりIJ−ニングローラ1
を具えるクリーナユニット2を、複写機本体に対して着
脱自在に設ける。複写機本体に装着した状態で、クリー
ニングローラ1がドラム状感光体8と所定の圧力を以っ
て当接するように配置する。クリーナユニット2は感光
体8側に窓4を、反対側には二重のフィルタ5を具える
FIG. 1 is a sectional view showing a cleaner unit of a copying machine to which a pressing member approaching and separating mechanism according to the present invention is applied. Substrate (
paper tube) with short hair fibers on the surface or IJ-ning roller 1
A cleaner unit 2 is provided to be detachably attached to the main body of the copying machine. When mounted on the main body of the copying machine, the cleaning roller 1 is arranged so as to come into contact with the drum-shaped photoreceptor 8 with a predetermined pressure. The cleaner unit 2 has a window 4 on the photoreceptor 8 side and a double filter 5 on the opposite side.

クリーナユニット2にはさらに長毛の繊維より成るブラ
シローラ6を、その毛先がクリーニングローラ1に当た
るように配置すると共に、はたき板7もブラシローラ6
の毛先に当たるよう配置し、感光体δ上の残留トナーを
クリーニングローラlで払拭除去し、このトナーをブラ
シローラ6、はたき板7により取り除くようにする0ク
リーナユニツト2の側部に図示しない吸引装置を設け、
フィルタ5を通してはたき板7によりはたき落されたト
ナーを吸引する。後述するように、これらクリーニング
ローラ1、゛ブラシローラ6およばはたき板7は相互に
連結され、感光体8のクリーニングを行なう際(クリー
ニング時という)には実線位置に、クリーニング時以外
のとき(非クリーニング時という)には一点鎖線で示さ
れる位置Gこ、接離機構により移動できφよう構成する
The cleaner unit 2 is further provided with a brush roller 6 made of long-haired fibers so that its bristles touch the cleaning roller 1.
A suction unit (not shown) is placed on the side of the cleaner unit 2 so that the remaining toner on the photoreceptor δ is wiped away by a cleaning roller l, and this toner is removed by a brush roller 6 and a duster plate 7. equipment,
The toner dusted off by the dusting plate 7 through the filter 5 is sucked. As will be described later, these cleaning roller 1, brush roller 6, and duster plate 7 are connected to each other, and are at the solid line position when cleaning the photoreceptor 8 (referred to as cleaning time), and at the solid line position at other times than cleaning time (non-cleaning time). During cleaning (referred to as cleaning), it is configured such that it can be moved to a position φ shown by a dashed line by a contact/separation mechanism.

第2図(A)および(B ’)は第1図に示すクリーニ
ングローラ1を感光体8に対して接離させる本発明の接
離機構の一例の構成を示す線図である。
FIGS. 2(A) and 2(B') are diagrams showing the configuration of an example of the approach/separate mechanism of the present invention for bringing the cleaning roller 1 shown in FIG. 1 into and away from the photoreceptor 8. FIG.

第2図(’A)は非クリーニング時、第2図(B)はク
リーニング時の接離機構を示す。クリーナユニット2の
外匣に設けた支点10にし/< −11を回動自在に支
承すると共に、同じく支点10にローラアーム12の中
央部も回動自在に支持する。
FIG. 2('A) shows the contact/separation mechanism during non-cleaning, and FIG. 2(B) shows the contact/separation mechanism during cleaning. A fulcrum 10 provided on the outer casing of the cleaner unit 2 rotatably supports /< -11, and the center portion of a roller arm 12 is also rotatably supported on the fulcrum 10.

又、レバー11の先端18とローラアーム12の一端1
4との間に予しめ張力を与えた状態で引張りばね15を
介挿すると共に、これらレノクー11の下面とロー)ア
ーム12の上面との間に出力軸16を配置し、出力軸に
固定される偏心カム17のカム面に夫々レバー11の下
面およびローラアーム12の上面とが当接するよ)うに
する。この出力軸16の駆動源は後述するよう複T機本
体側に設ける。この際、偏心カム17は、出力軸16の
軸線位置よりカム面までの距Wa<動径という)が最も
大きい位置がローラアーム12側に向き、動径の最も小
さい位置がレバーll側に向くように位置している。又
、この状態ではクリーニングローラ1は、クリーニング
ユニット2の窓4から突出せず、従って感光体8と当接
していない。一方、ローラアーム12の他端18にクリ
ーニングローラ1を軸19により回転自在に支承し、こ
の軸19をp−ラアーム12のさらに外側で連結部材2
0とも回転自在に支承する。又、支点21を中心にブラ
シアーム22を回動自在に支持し、このブラシアーム8
2の支点z1と反対側の先端部で、軸28によりブラシ
ローラ6を回転自在に支承する。さらに、この軸28は
ブラシアーム22の外側で連結部材20にも回転自在に
支承する。又、連結部材20の一端に、はたき板7を、
その先端がブラシローラ6の紙面に垂直な方向の幅に亘
って一様に当接するよう配置する。軸19と軸28との
中心間距゛嶋は、クリーニングローラ1とブラシローラ
6の夫^の毛先が互いに当接するような距mとする。ク
リーニングローラ11ブラシローラ6およびはたき板7
は夫々連結部材20に連結するため、連結部材の移動に
際しても相対的な位置関係は変化しない。
Also, the tip 18 of the lever 11 and the one end 1 of the roller arm 12
4, a tension spring 15 is inserted in a state where tension is applied in advance, and an output shaft 16 is arranged between the lower surface of these renocouples 11 and the upper surface of the low arm 12, and the output shaft 16 is fixed to the output shaft. The lower surface of the lever 11 and the upper surface of the roller arm 12 are brought into contact with the cam surface of the eccentric cam 17, respectively. A drive source for this output shaft 16 is provided on the multi-T machine main body side, as will be described later. At this time, in the eccentric cam 17, the position where the distance Wa from the axial line position of the output shaft 16 to the cam surface is the largest (referred to as vector radius) faces the roller arm 12 side, and the position where the smallest vector radius faces the lever ll side. It's located like that. Further, in this state, the cleaning roller 1 does not protrude from the window 4 of the cleaning unit 2, and therefore does not come into contact with the photoreceptor 8. On the other hand, the cleaning roller 1 is rotatably supported on the other end 18 of the roller arm 12 by a shaft 19, and this shaft 19 is connected to a connecting member 2 on the outside of the p-ra arm 12.
0 and is rotatably supported. Further, a brush arm 22 is rotatably supported around a fulcrum 21, and this brush arm 8
The brush roller 6 is rotatably supported by a shaft 28 at the tip opposite to the fulcrum z1 of the brush roller 2. Furthermore, this shaft 28 is also rotatably supported on the connecting member 20 on the outside of the brush arm 22. Also, a duster plate 7 is attached to one end of the connecting member 20,
It is arranged so that its tip abuts uniformly over the width of the brush roller 6 in the direction perpendicular to the paper surface. The distance between the centers of the shafts 19 and 28 is set to a distance m such that the ends of the cleaning roller 1 and the brush roller 6 come into contact with each other. Cleaning roller 11 brush roller 6 and duster plate 7
are connected to the connecting member 20, so the relative positional relationship does not change even when the connecting members are moved.

第2図(B)に示すクリーニング時の状態では偏心カム
17は、動径の最1も大きな位置がレバー11@に向く
と共にレバー11と当接し、動径の最も小さな位置はロ
ーラアーム12側を向くと共に、カム面とローラアーム
12との間は離れて隙間が生じている。これは、レバー
11に対する偏心カム17のリフト斂が増大したためレ
バー11が時計方向に回動するが、ローラアーム12は
、その一端に設けたクリーニングローラ1が感光体8と
当接するため、時計方向の回動が制限されるためである
。従ってばね部材15はその分だけさらに引張られた状
態となり、このばね力によってクリーニングローラ1の
感光体8への接触圧を生じる。すなわち、予じめ引張ら
れた状態で張架されたばね部材15はさらに引張られる
ことになるので、このときの変位量が僅かであっても最
適の十分大きなばね力が得ら”れることになる。
In the cleaning state shown in FIG. 2(B), the eccentric cam 17 has its largest radius vector facing the lever 11@ and comes into contact with the lever 11, and its smallest radius vector side faces the roller arm 12. The cam surface and the roller arm 12 are separated from each other and a gap is created between the cam surface and the roller arm 12. This is because the lever 11 rotates clockwise because the lift angle of the eccentric cam 17 with respect to the lever 11 increases, but the roller arm 12 rotates clockwise because the cleaning roller 1 provided at one end of the roller arm 12 comes into contact with the photoreceptor 8. This is because the rotation of is restricted. Therefore, the spring member 15 is further tensioned by that amount, and this spring force generates a contact pressure of the cleaning roller 1 against the photoreceptor 8. In other words, the spring member 15, which is stretched in a pre-tensioned state, is further tensioned, so that even if the amount of displacement at this time is small, an optimal and sufficiently large spring force can be obtained. .

尚このような構成のクリーニングローラの接離機構は、
クリーニングユニットの側方の一方にのみ設けても良い
が、両側に設けることにより動作をより確実にすること
ができる。
The cleaning roller approach and separation mechanism with this configuration is as follows:
Although it may be provided only on one side of the cleaning unit, the operation can be made more reliable by providing it on both sides.

第8図は第1および第2図のクリーニングローラとブラ
シローラとの駆動機構を示す線図である。
FIG. 8 is a diagram showing a drive mechanism for the cleaning roller and brush roller of FIGS. 1 and 2. FIG.

この駆動機構は、クリーニングユニット2の側部のうち
、第8図で示した側と反対側にある。クリーニングロー
ラlの側方に同軸にギア25を固定すると共に、ブラシ
ローラ6の側方にも同軸にギア26を固定する。これら
のキア25,26と噛合するように、夫々ローラアーム
1zとブラシアーム22の内側に、夫々支点10.21
を中心としてギア27.28を回転自在に支承する一方
複写機本体@には、これらギア27.28を駆動するた
めの動力源を設ける。即ちギア27の下方に互いに噛合
するようにクリーニングローラ駆動用人力ギア29を配
置し、ギア28の上方にも、互いに一合するようにブラ
シローラ駆紬用人力ギアδ0を配置する。クリーニング
ローラlに付着したトナーを有効に除去するため、ブラ
シローラはクリーニングローラより高速で回転するよう
にする。
This drive mechanism is located on the side of the cleaning unit 2 opposite to the side shown in FIG. A gear 25 is coaxially fixed to the side of the cleaning roller l, and a gear 26 is also coaxially fixed to the side of the brush roller 6. Support points 10 and 21 are provided inside the roller arm 1z and the brush arm 22, respectively, so as to mesh with these wheels 25 and 26.
The main body of the copying machine, which rotatably supports gears 27 and 28, is provided with a power source for driving these gears 27 and 28. That is, the cleaning roller driving manual gear 29 is arranged below the gear 27 so as to mesh with each other, and the brush roller driving manual gear δ0 is also arranged above the gear 28 so as to mesh with each other. In order to effectively remove the toner adhering to the cleaning roller l, the brush roller is made to rotate at a higher speed than the cleaning roller.

このような構成のクリーニングローラの接離機檎の動作
を説明する。非クリーニング時の状態より、出力軸を所
定量だけ回転させ、偏心カム17によりレバー11を回
動する。このためレバー11はばね部材15を介してロ
ーラアーム12の一端14を上方に引き上げる。従って
ローラアーム1gはその他端に支持するクリーニングロ
ーラlが感光体8と当接するまで支点IOを中心に回動
する。ここまでは、偏心カムとローラアームIgとは当
接している。クリーニングローラが感光体8に当たり、
ローラアーム12が止まっても、偏心カムはさらに回動
しレバー11はなおも回動してと昇するように構成した
ため、偏心カム17とローラアーム12とは離れて隙間
を生ずると共に、ばね部材はざらに引紐られるため伸び
てクリーニングローラlの感光体への接触力を増加する
The operation of the cleaning roller approaching/separating machine having such a configuration will be explained. The output shaft is rotated by a predetermined amount from the non-cleaning state, and the lever 11 is rotated by the eccentric cam 17. Therefore, lever 11 pulls up one end 14 of roller arm 12 via spring member 15. Therefore, the roller arm 1g rotates about the fulcrum IO until the cleaning roller 1 supported at the other end comes into contact with the photoreceptor 8. Up to this point, the eccentric cam and roller arm Ig are in contact with each other. The cleaning roller hits the photoreceptor 8,
Even if the roller arm 12 stops, the eccentric cam is configured to rotate further and the lever 11 continues to rotate and rise, so the eccentric cam 17 and the roller arm 12 are separated, creating a gap, and the spring member Since the string is loosely drawn, it stretches and increases the contact force of the cleaning roller l against the photoreceptor.

この際、クリーニングローラおよびブラシローラは、夫
々クリーニングローラ駆動用人カギア29およびブラシ
ローラ駆動用入力ギア80により回転駆動されるため、
感光体δ上の残留トナーを除去できる。除去されたトナ
ーは、ブラシローラ6およびはたき板7によりクリーナ
ユニット内に飛散するが、吸引装置によりフィルタ5に
捕獲される。
At this time, the cleaning roller and the brush roller are rotationally driven by the cleaning roller driving input gear 29 and the brush roller driving input gear 80, respectively.
Residual toner on the photoreceptor δ can be removed. The removed toner is scattered into the cleaner unit by the brush roller 6 and the duster plate 7, but is captured by the filter 5 by the suction device.

又、上述の構成のクリーナユニットは、その駆動のため
に駆動用ギアと噛合する以外は、複写機本体と何らの連
結はない。従って、これら駆動ギア29.80とクリー
ナユニット2とが離れられる方向、即ち第8図矢印A方
回に、このクリーナユニット2を引き抜くことができる
し、差し込むこともできる。
Further, the cleaner unit configured as described above is not connected to the main body of the copying machine in any way except that it meshes with a driving gear for driving the cleaner unit. Therefore, the cleaner unit 2 can be pulled out or inserted in the direction in which the driving gears 29, 80 and the cleaner unit 2 are separated, that is, in the direction of arrow A in FIG.

第4図は第2図のクリーナユニットの平面図であり、第
5図は第2図の出力軸を間欠的に駆動する間欠的動力伝
達WA檎の一例のim成を示す側面図であり、第6図は
第5図をVI4I線で切断して示す断面図である。クリ
ーナユニット2のクリーニングローラのギアz5の反対
側の@部をくぼませて、この凹部8!!に第2図におけ
るクリーニングローラの接離機構の出力軸の間欠的動力
伝達m&を配置する。又、クリーニングローラのギア2
6もクリ−ガニニット2の凹部85に配置し、これらギ
ア25および間欠的動力伝達Ii!A檎34が、クリー
ナユニット2の両側部より突出しないように構成する。
4 is a plan view of the cleaner unit shown in FIG. 2, and FIG. 5 is a side view showing the configuration of an example of the intermittent power transmission WA which intermittently drives the output shaft of FIG. FIG. 6 is a cross-sectional view of FIG. 5 taken along line VI4I. Make a recess in the @ part on the opposite side of the gear z5 of the cleaning roller of the cleaner unit 2 to form this recessed part 8! ! The intermittent power transmission m& of the output shaft of the cleaning roller approaching/separating mechanism shown in FIG. 2 is arranged in FIG. Also, gear 2 of the cleaning roller
6 is also arranged in the recess 85 of the crease unit 2, and these gears 25 and the intermittent power transmission Ii! The A cypress 34 is configured so as not to protrude from both sides of the cleaner unit 2.

従ってクリーナユニット2は複写機本体側から両矢印に
方向に抜き差しすることができる。
Therefore, the cleaner unit 2 can be inserted and removed from the copying machine main body side in the directions of both arrows.

第5図および第6ri!Jに示すようにクリーナユニッ
ト2の側方の凹部82内に、前述した接離機構のカム1
7を固着した出力軸16を突出させ、これに制御カム8
7およびカムギア88を固定する。
Figures 5 and 6ri! As shown in J, the cam 1 of the above-mentioned contact/separation mechanism is installed in the recess 82 on the side of the cleaner unit 2.
7 is fixed to the output shaft 16, and the control cam 8 is connected to it.
7 and cam gear 88 are fixed.

制御カム37とカムギア88とは一体となっているが、
別々でもよい。このカムの形状はカム面に。
Although the control cam 37 and the cam gear 88 are integrated,
May be separate. The shape of this cam is on the cam surface.

溝39を形成する他は、出力軸16と同心円状の円周面
会0を有する。出力軸16の下方に、図示しない複写機
本体側に支持される入力軸41を、互いの軸線示平行と
なるように配置する。この入力軸は常時回転するように
する。この入力軸には、カムギア88と互いに噛合する
ように入力ギア42を回転自在に遊嵌すると共に、この
入力ギア42の外側に入力軸41との間の動力の接続又
は遮断を行なう爪$48を有するクラッチ機構44も設
ける。従って制御カム37と型車43とは同じ鉛直平面
に位置する。この平面内に4つの爪s45゜46.47
.48を一体に有する制御部材49を配置し、複写機本
体側の支点50に対してこの平面内で(ロ)動自在に支
承する。又、支点50に対してこの制御部材49の鳴つ
の爪部を有する側と反対側の端部を戻しばね51により
本体側の一方B方向に付勢すると共に、この端部にソレ
ノイド52を連結しこのソレノ・イド52が作動すると
きにはこの付勢方向と反対側即ちC方向に戻しばね51
に抗して制御1部材49が回動するよう構成する。
Other than forming the groove 39, it has a circumferential surface 0 concentric with the output shaft 16. An input shaft 41 supported by the main body of the copying machine (not shown) is arranged below the output shaft 16 so that their axes are parallel to each other. This input shaft should always rotate. The input gear 42 is rotatably loosely fitted onto the input shaft so as to mesh with the cam gear 88, and a pawl 48 is provided on the outside of the input gear 42 for connecting or disconnecting power to the input shaft 41. A clutch mechanism 44 is also provided. Therefore, the control cam 37 and the model wheel 43 are located on the same vertical plane. Four claws s45°46.47 in this plane
.. A control member 49 integrally having a control member 48 is disposed and supported so as to be movable within this plane with respect to a fulcrum 50 on the side of the main body of the copying machine. Further, the end of the control member 49 opposite to the side having the ringing claw portion is biased toward the main body side by a return spring 51 with respect to the fulcrum 50, and a solenoid 52 is connected to this end. When the solenoid 52 is activated, the spring 51 returns to the opposite side of the biasing direction, that is, in the C direction.
The first control member 49 is configured to rotate against the

従ってソレノイド52の不作動時には制御部材49は、
その動きつる範Hにおいて戻しはね51によりB方向に
回動することとなる。制御部材の4つの爪部のうち、爪
部45.46は制御カム37の溝39および円周面40
に係合するための退部であり、爪部47,4’8は型車
傷8の各爪歯と係合してクラッチ機構44を遮断状態に
するための爪部々ある。
Therefore, when the solenoid 52 is inactive, the control member 49
In the movement range H, the return spring 51 causes it to rotate in the B direction. Among the four pawls of the control member, the pawls 45 and 46 are connected to the groove 39 of the control cam 37 and the circumferential surface 40.
The claw portions 47, 4'8 are claw portions for engaging with respective claw teeth of the mold wheel scratch 8 to bring the clutch mechanism 44 into a disconnected state.

又、各爪部相互間の位f&lr!A係は、爪部46が溝
89と係合するときには同時に爪s47が型取と係合し
く図において実線で示す)、爪部46が溝89と係合す
るときには、爪部48が型車48と係合する(図におい
て一点鎖線で示す)ようにする。尚、制御カムは爪部条
5と満89とが係合するとき、偏心カム17の最大動径
を有する部分が鉛直上方を向くようにし、この際クリー
ニングローラlがクリーナユニット2より突出して感光
体8に圧接するようにする。制御カムのこれ以外の位置
ではクリーニングローラは常に非クリーニング状態とな
る。
Also, the distance between each claw part f&lr! In relation to A, when the pawl 46 engages with the groove 89, the pawl s47 simultaneously engages with the mold (shown by a solid line in the figure), and when the pawl 46 engages with the groove 89, the pawl 48 engages with the mold. 48 (indicated by a dashed line in the figure). In addition, when the control cam engages the claw portion strip 5 and the full length 89, the portion of the eccentric cam 17 having the maximum radius is directed vertically upward, and at this time, the cleaning roller l protrudes from the cleaner unit 2 and It is made to come into pressure contact with the body 8. At any other position of the control cam, the cleaning roller is always in the non-cleaning state.

爪部45.46が制御カム87の円周面40kに当接し
ている際には1、爪部47,48tま共に重水48と係
合せず、従ってクラッチ機構44は接続状態となる。こ
のようなりラッチ機構44は第6図に示すようにはねク
ラッチを構成する。出力軸16に夫々偏心カム1フおよ
び一体の制御カム87、カムギア88を夫々止めねじ5
4.65i1:より固定する。又入力軸41にカムギア
8εと噛合する入力ギア42を、夫々入力軸41の溝に
嵌めたEリング56と止めねじ571.:より入力軸に
固定したクラッチ部材58との間に回転自在に支承する
。従って入力ギア42は入力軸41の軸方向に移動する
ことはない。入力ギア42とクラッチ部材58との互い
に対向する部分に同一径の円周部を形成しこの円周部の
外周にスプリングクラッチ69を介挿する。このスプリ
ングクラッチ59は、入力ギアとクラッチ部材との間で
適切な摩擦を生じるようにする、このスプリングクラッ
チ59のトに重重48を介挿する。これらの間でも適切
な摩擦力が生じるようにする。
When the claws 45, 46 are in contact with the circumferential surface 40k of the control cam 87, neither the claws 47, 48t engage with the heavy water 48, and therefore the clutch mechanism 44 is in a connected state. The latch mechanism 44 thus constitutes a spring clutch as shown in FIG. An eccentric cam 1f, an integrated control cam 87, and a cam gear 88 are attached to the output shaft 16 by respective set screws 5.
4.65i1: More fixed. Furthermore, the input gear 42 that meshes with the cam gear 8ε is connected to the input shaft 41 by an E ring 56 and a set screw 571, which are fitted into the grooves of the input shaft 41, respectively. : Rotatably supported between the clutch member 58 fixed to the input shaft. Therefore, the input gear 42 does not move in the axial direction of the input shaft 41. A circumferential portion having the same diameter is formed at mutually opposing portions of the input gear 42 and the clutch member 58, and a spring clutch 69 is inserted on the outer periphery of this circumferential portion. A heavy weight 48 is inserted into the spring clutch 59 to create appropriate friction between the input gear and the clutch member. Appropriate frictional force should be generated between these as well.

このような構成の間欠的動力伝達機構の動作を1明する
、。クリーナユニット2を複写機に装着した状態でツレ
/イド52に通電すると、制御部材49 j:i C方
向に回動して爪部46と溝89との係合が外れ爪部45
゛が溝89と係合するまでの所定の間クラッチ機構44
は接続状態となり、入力軸41の回転は順次クラッチ部
材58、スプリングクラッチ59、入力ギア42、カム
ギア88、出力軸16を介して偏心カム17に伝逓する
。この間制御カム87が回転するため爪部45は制御カ
ムの溝89以外の部材と当接し、この状態では爪部47
,48はいずれも型車48とは係合しない。
The operation of the intermittent power transmission mechanism having such a configuration will be explained below. When power is applied to the slide/id 52 with the cleaner unit 2 installed in the copying machine, the control member 49 rotates in the j:iC direction, and the claw portion 46 disengages from the groove 89, causing the claw portion 45 to disengage.
Clutch mechanism 44 for a predetermined period until it engages with groove 89
is in a connected state, and the rotation of the input shaft 41 is sequentially transmitted to the eccentric cam 17 via the clutch member 58, spring clutch 59, input gear 42, cam gear 88, and output shaft 16. During this time, since the control cam 87 rotates, the claw portion 45 comes into contact with a member other than the groove 89 of the control cam, and in this state, the claw portion 45
, 48 do not engage with the model wheel 48.

したがって制御カムがさらに回動し、その1liI89
に爪部45篭が落込むと制御部材49はざらにC方向に
回動し、爪部47が型車と係合してその回転を止めるた
め、入力軸41とスプリングクラッチ59との間では摩
擦を生じて両者が空回りすると共に、スプリングクラッ
チ69と入力ギア4gとは共に停止して回転を止める。
Therefore, the control cam rotates further and its 1liI89
When the claw portion 45 falls down, the control member 49 roughly rotates in the C direction, and the claw portion 47 engages with the mold wheel to stop its rotation. Friction is generated and both rotate idly, and both the spring clutch 69 and the input gear 4g stop and stop rotating.

従って出力軸16、偏心カム17も、爪部45が溝に入
る位置で停止し、クリーニングローラを感光体に押しつ
けてクリーニングを行ない得る状態となる。このように
ソレノイド52(が通電されている場合は、制御カムは
爪部45が溝89に係合するまで回動した後停止して制
御カムの溝により定めた所定の時間だけ動力伝達を行な
う。
Therefore, the output shaft 16 and the eccentric cam 17 also stop at the position where the claw portion 45 enters the groove, and the cleaning roller is pressed against the photoreceptor to perform cleaning. In this way, when the solenoid 52 (is energized), the control cam rotates until the pawl 45 engages with the groove 89, then stops, and transmits power for a predetermined time determined by the groove of the control cam. .

このクリ−52フ時に停電が起こったり、メインスイッ
チが切れた場合、ソレノイド52は不作動となり戻しは
ね51の力により制御部材49はB方向に回動して爪部
会6が制御カム87の円周面に当接すると同時に、爪M
)47は爪11f4aより離れるため、クラッチ機11
44は接続状態となる。
If a power outage occurs or the main switch is turned off during this crease 52, the solenoid 52 will be inactive and the control member 49 will rotate in the direction B due to the force of the return spring 51, causing the pawl member 6 to engage the control cam 87. At the same time as it comes into contact with the circumferential surface, the claw M
) 47 is separated from the pawl 11f4a, so the clutch device 11
44 is in a connected state.

停止等により、当然入力軸4】の駆動系のモータも停止
するか、この駆動系は、ある程度慣性を有するため、す
ぐには入力軸の回転は止まらない。
Due to the stoppage, etc., the motor of the drive system of the input shaft 4 will naturally stop, or since this drive system has some degree of inertia, the rotation of the input shaft will not stop immediately.

従って1!1IIIiIlカム87は、爪部46が溝8
9に入り込むまで回動する。同時に爪1748が型車4
3と係合してクラッチ機l11144を遮断状態にする
。このZ Uta t+’、・カム17も回動するため
クリーニングローラ1はクリーニングローラト2より引
っ込み非クリーニング状態となる。従って1!源が切れ
たとき出力軸16は常に爪部46と*39とにより定ま
る所定の回転位置に停止することになる。又、入力軸4
1の駆動系は慣性のなくなるまで回転して停止する。そ
の後停電等が直っても、入力軸41およびクラッチ部材
58が回転するだけでクラッチ機4111は遮断状態即
ち非クリーニング状態のままとなる。
Therefore, in the 1!1IIIiIl cam 87, the claw portion 46 is
Rotate until it reaches 9. At the same time, the claw 1748 is the model wheel 4.
3 and puts the clutch device l11144 in the disconnected state. Since the cam 17 also rotates, the cleaning roller 1 is retracted from the cleaning roller 2 and is in a non-cleaning state. Therefore 1! When the power is turned off, the output shaft 16 always stops at a predetermined rotational position determined by the claw portion 46 and *39. Also, input shaft 4
The drive system No. 1 rotates until it loses inertia and then stops. Even if the power outage or the like is repaired thereafter, the input shaft 41 and the clutch member 58 only rotate, and the clutch device 4111 remains in the disconnected state, that is, in the non-cleaning state.

一方第4図に示すようにクリーナユニットの側方に突起
部分を形成しないと共に1、押圧部材であるクリーニン
グローラの′lI!離機構の駆動機構は、クリーナユニ
ット側と本体側との連結がカムギアと入力ギアの噛合お
よび制御部材の爪部45又は46と制御カムの溝89と
の保合だけであるうので、非クリーニング時に両矢印直
方向にクリーナユニット2を抜き差しすることができる
On the other hand, as shown in FIG. 4, no protrusions are formed on the sides of the cleaner unit, and the cleaning roller, which is a pressing member, has no protrusions. The drive mechanism of the release mechanism is connected between the cleaner unit side and the main body side only by the engagement of the cam gear and the input gear and the engagement of the claw portion 45 or 46 of the control member with the groove 89 of the control cam, so that it is not used for cleaning. At times, the cleaner unit 2 can be inserted and removed in the direction perpendicular to both arrows.

尚、本発明は上述した例にのみ限定されることなく幾多
の変形又は変更が可能である。例えば抑圧部材としては
、複写機ではクリーニングローラの他に、定着器のヒー
トローラ(圧力定着ローラ)、転写ローラでもよく、又
回転体でないクリーニングプレートでもよい。さらに、
複写機以外での押圧部材であってもよい。又上述した実
施例では、変位部材であるレバー11とローラアームを
同一の支点10により支持しているが、異なる支点で支
持してもよい。
Note that the present invention is not limited to the above-mentioned examples, and can be modified or changed in many ways. For example, in addition to the cleaning roller in a copying machine, the suppressing member may be a heat roller (pressure fixing roller) of a fixing device, a transfer roller, or a cleaning plate that is not a rotating body. moreover,
A pressing member other than a copying machine may be used. Further, in the embodiment described above, the lever 11 and the roller arm, which are the displacement members, are supported by the same fulcrum 10, but they may be supported by different fulcrums.

以上の説明から明らかなように、本発明による押圧部材
の接離機構によれば、押圧部材と被押圧部材との接離、
をカム部材によりばね部材を介して行なうため以下の効
果がある。
As is clear from the above description, according to the mechanism for bringing the pressing member into contact with and separating from the pressing member according to the present invention, the pressing member and the pressed member can come into contact and separate from each other.
Since this is performed by the cam member via the spring member, the following effects can be obtained.

(1)  カムにより押圧部材を変位させるものである
から押圧部材が被押圧部材昏こ当接する際に大きな衝撃
力が生じないため、これら抑圧針、材と被抑圧部材とが
損傷するおそt」かないと共に衝撃による振動や騒音も
発生しない。
(1) Since the pressing member is displaced by a cam, no large impact force is generated when the pressing member comes into contact with the pressed member, so there is a risk of damage to the pressing needle, the material, and the pressed member. In addition to being durable, there is no vibration or noise caused by impact.

(2)  押圧F!AS材を被押圧部材からll1lI
’、jlさせるとき警まカムにより変位させるので動作
が確実になる0(8)押圧部材と被抑圧部材との間の接
触圧はばねのばね力により決まるため、押圧部材の状態
によらず接触圧が変化しない0 (4)予じめ引張った状態でばねを張架し、これをさら
に備かに引張って押圧力を発生させるようにしたため、
ばねの変位−を少なくすることによりはねの劣化を防止
することができ5ると共に、僅かな変位量で所望の大き
な押圧力を発生させることができる。
(2) Pressure F! Remove the AS material from the pressed member
', jl is displaced by the alarm cam, so the operation is reliable.0(8) The contact pressure between the pressing member and the suppressed member is determined by the spring force of the spring, so the contact does not depend on the state of the pressing member. Pressure does not change 0 (4) The spring is stretched in a pre-tensioned state, and then the spring is further stretched to generate a pressing force.
By reducing the displacement of the spring, deterioration of the spring can be prevented, and a desired large pressing force can be generated with a small amount of displacement.

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

−第1図は本発明による抑圧部材の接離機構を適用する
複写機のクリーナユニットを示す断面図、第2図(A)
およびの)は91図の押圧部材の接離機構の一例を示す
線図、 第8図は第1図および第2図のり1ノーニングローラと
ブラシローラとの駆動@*を示す線図、第4図は第2図
のクリーナユニットの平面図、第5図は第2図の出力軸
を間欠的に駆動する間欠的動力伝達機構の一例の構成を
示す側面図、第6図は給5図を五−VI線で切断して示
す断面図である。
- Fig. 1 is a sectional view showing a cleaner unit of a copying machine to which the suppressing member approaching and separating mechanism according to the present invention is applied, and Fig. 2 (A)
and ) are line diagrams showing an example of the contact and separation mechanism of the pressing member in Figure 91. 4 is a plan view of the cleaner unit shown in FIG. 2, FIG. 5 is a side view showing the configuration of an example of an intermittent power transmission mechanism that intermittently drives the output shaft of FIG. 2, and FIG. 6 is a plan view of the cleaner unit shown in FIG. FIG. 2 is a cross-sectional view taken along line 5-VI.

Claims (1)

【特許請求の範囲】[Claims] L 被押圧部材に対して選択的に押圧すべき押圧部材を
支持する揺動自在の第1の部材と、この第1の部材と平
行な平面内で揺動自在に枢支された第2の部材と、これ
ら第1および第2の部材の間に回転自在に設けられたカ
ム部材と、前記第1および第2の部材間に張架され、こ
れら第1および第2の部材を前記カム部材に向けて弾性
的に偏倚するばね部材とを具え、前記カム部材が第1の
位置を占めるときは第1および第2の部材がカム部材に
当接して前記押圧部材を被押圧部材から離間させ、前記
カム部材が第2の位置を占めるときは前記第2の部材の
みがカム部材に当接して押圧部材を被押圧部材にばね部
材による一定のばね力によって弾性的に押圧させるよう
構成したことを特徴とする押圧部材の接離機構。
L A swingable first member supporting a pressing member to selectively press against a pressed member, and a second swingably supported member in a plane parallel to the first member. a cam member rotatably provided between the first and second members, and a cam member that is stretched between the first and second members, and the first and second members are a spring member elastically biased toward the cam member, and when the cam member is in the first position, the first and second members abut the cam member to separate the pressing member from the pressed member. , when the cam member occupies the second position, only the second member comes into contact with the cam member, and the pressing member is elastically pressed against the pressed member by a constant spring force of the spring member. A mechanism for approaching and separating a pressing member.
JP57065741A 1982-04-20 1982-04-20 Contacting and leaving mechanism of pressing member Pending JPS58182679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57065741A JPS58182679A (en) 1982-04-20 1982-04-20 Contacting and leaving mechanism of pressing member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57065741A JPS58182679A (en) 1982-04-20 1982-04-20 Contacting and leaving mechanism of pressing member

Publications (1)

Publication Number Publication Date
JPS58182679A true JPS58182679A (en) 1983-10-25

Family

ID=13295740

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57065741A Pending JPS58182679A (en) 1982-04-20 1982-04-20 Contacting and leaving mechanism of pressing member

Country Status (1)

Country Link
JP (1) JPS58182679A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58121042U (en) * 1982-02-09 1983-08-17 コニカ株式会社 Copy machine paper feed member control device
CN109946939A (en) * 2017-11-21 2019-06-28 夏普株式会社 Roller arrangement, fixing device and image forming apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58121042U (en) * 1982-02-09 1983-08-17 コニカ株式会社 Copy machine paper feed member control device
CN109946939A (en) * 2017-11-21 2019-06-28 夏普株式会社 Roller arrangement, fixing device and image forming apparatus

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