JP2511575Y2 - Electrostatic recording device photosensitive drum holding device - Google Patents
Electrostatic recording device photosensitive drum holding deviceInfo
- Publication number
- JP2511575Y2 JP2511575Y2 JP1986101387U JP10138786U JP2511575Y2 JP 2511575 Y2 JP2511575 Y2 JP 2511575Y2 JP 1986101387 U JP1986101387 U JP 1986101387U JP 10138786 U JP10138786 U JP 10138786U JP 2511575 Y2 JP2511575 Y2 JP 2511575Y2
- Authority
- JP
- Japan
- Prior art keywords
- photosensitive drum
- pair
- holding device
- support members
- conical
- 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 - Lifetime
Links
Landscapes
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
Description
【考案の詳細な説明】 技術分野 本考案は、静電記録装置の感光体ドラム保持装置に関
する。TECHNICAL FIELD The present invention relates to a photosensitive drum holding device of an electrostatic recording device.
従来技術 電子写真複写機、フアクシミリ、静電プリンタ等の静
電記録装置の感光体として広く利用されている感光体ド
ラムの交換、保守点検のための脱着は、従来一般に第４
図に示す如く、感光体ドラム１をその周辺のユニツトと
一体化した感光体回りユニツト２を、複写機等本体３よ
り感光体ドラムの軸方向に引出し、その後感光体ドラム
１を破線で示す如く、上方に持出す形で脱着していた。
又、感光体ドラム１への駆動伝達は、第５図に示す如
く、感光体ドラム１を複写機本体内の所定の位置に装着
した時に本体側駆動軸４と係合するカツプリング５で連
結する方式を採つていた。2. Description of the Related Art Replacement of a photosensitive drum, which is widely used as a photosensitive member of an electrostatic recording device such as an electrophotographic copying machine, facsimile machine, electrostatic printer, etc., and attachment / detachment for maintenance / inspection are generally performed by a conventional method.
As shown in the figure, a photosensitive member unit 2 in which the photosensitive drum 1 is integrated with a peripheral unit is pulled out in the axial direction of the photosensitive drum from a main body 3 such as a copying machine, and then the photosensitive drum 1 is indicated by a broken line. , Was detached by taking it out upwards.
Further, as shown in FIG. 5, the drive transmission to the photosensitive drum 1 is connected by a coupling 5 which engages with the drive shaft 4 on the main body side when the photosensitive drum 1 is mounted at a predetermined position in the main body of the copying machine. The method was adopted.
上記の構成では、感光体を手前に引出すために相当広
いスペースを必要とし、カツプリングを介して動力を伝
達している関係上起動時バツクラツシユが起る欠点があ
つた。The above-mentioned construction requires a considerably large space for pulling out the photoconductor to the front side, and there is a drawback that the backlash occurs at the time of starting because the power is transmitted through the coupling.
目的 本考案は、従来の複写機の感光体ドラムの脱着、動力
伝達に係る上述の欠点にかんがみ、感光体ドラムの脱着
のためのスペースが少なくて済み、起動時のバツクラツ
シユがない感光体ドラムの保持装置を提供することを目
的とする。SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks related to attachment / detachment and power transmission of a photoconductor drum of a conventional copying machine, the present invention requires a small space for attachment / detachment of the photoconductor drum, and has no backlash at startup. An object is to provide a holding device.
構成 上記目的を達成するために、本考案にしたがい、装置
本体への感光体ドラムの保持装置は、機枠両側板に同一
軸線上に軸支され、互いに向かい合った端部には感光体
ドラムの両端部に形成された円錐形凹面に摩擦力により
相互回転しないように係合する円錐面を有する１対の支
持部材と、該１対の支持部材の一方を前記円錐形凹面に
押圧するための弾性部材と、前記１対の支持部材の円錐
面が前記感光体ドラム両端部の円錐形凹面へ圧接する位
置と該円錐形凹面への圧力を解除する位置とをとりうる
ように、前記弾性部材の押圧力を調整するように螺合位
置可変に螺合する１対のねじリングを有する付勢調節手
段とを有してなり、一方の支持部材は駆動源により回転
駆動可能とされており、かつ少なくとも一方の支持部材
は軸方向に所定の範囲摺動可能とされ、上記付勢調節手
段の付勢力を解除することにより、１対の支持部材の互
いに向かい合った端面間の距離を、感光体ドラムの長さ
以上とすることが可能であることを特徴とする。In order to achieve the above-mentioned object, according to the present invention, a device for holding the photosensitive drum on the main body of the apparatus is coaxially supported by both side plates of the machine frame, and the photosensitive drum is provided at opposite ends. A pair of support members having conical surfaces that engage with conical concave surfaces formed at both ends by frictional force so that they do not rotate relative to each other, and one of the pair of support members is pressed against the conical concave surfaces The elastic member, and the elastic member so that the conical surfaces of the pair of supporting members can be positioned so as to come into pressure contact with the conical concave surfaces at both ends of the photosensitive drum and to release the pressure on the conical concave surfaces. And a biasing adjusting means having a pair of screw rings that are screwed in such a manner that the screwing position is variable so as to adjust the pressing force of, and one of the supporting members can be rotationally driven by a driving source. And at least one support member is axially predetermined Is slidable within the above range, and by releasing the biasing force of the bias adjusting means, the distance between the end faces of the pair of supporting members facing each other can be made equal to or longer than the length of the photosensitive drum. It is characterized by being.
以下に、本考案の実施例を図面に基いて詳細に説明す
る。Embodiments of the present invention will be described below in detail with reference to the drawings.
第１図及び第２図は、本考案による感光体ドラム保持
装置の実施例を示す図で、複写機本体10は、上部ユニツ
ト11と下部ユニツト12とに分割され、これら両ユニツト
は第１図において右端部に設けられた軸13により互いに
枢着されており、感光体ドラム１は上部ユニツト11の機
枠側板14,15に軸支された支持部材16,17を介して機枠側
板14,15に回転可能に取付けられている。1 and 2 are views showing an embodiment of a photosensitive drum holding device according to the present invention, in which a copying machine main body 10 is divided into an upper unit 11 and a lower unit 12, both units of which are shown in FIG. , The photosensitive drum 1 is pivotally attached to each other by a shaft 13 provided at the right end portion thereof, and the photoconductor drum 1 is supported by supporting members 16 and 17 pivotally supported by the machine frame side plates 14 and 15 of the upper unit 11, It is rotatably mounted on 15.
感光体ドラム１を支持部材16,17でこれらと一体的に
回転できるように保持し、かつ交換、保守点検のため着
脱するための保持装置は、丁度、写真のフイルムをカメ
ラに装填するのと同様、一方の支持部材16は軸方向に摺
動不能にかつ駆動源により回転可能に機枠側板14に軸支
され、他方の支持部材17は機枠側板15に軸方向に所定量
摺動可能にかつ回転自在に軸支され、機枠の外面に固定
された押え板18との間に圧縮スプリング19を介在させ、
支持部材16の方に近接する如く付勢され、この両支持部
材16,17で弾発的に挾持して一体に回転するように支持
しており、感光体ドラム１の取外し時には、支持部材17
を圧縮スプリング19の力を解除して、又はそれに抗して
側板15の外方に引き、他方の支持部材16との間隔を感光
体ドラム１の全長よりも広くすることによつて感光体ド
ラム１の拘束を解除し、第１図に矢印20で示す方向に抜
き出す。感光体ドラム１の端部と両支持部材16,17とが
一体的に回転するように確実に係合するように、感光体
ドラム１の両端は円錐内面に加工されており、一方、両
側の支持部材16,17の向い合つた端部には、感光体ドラ
ム１の上記円錐内面に密接する円錐面を持つた係合部材
21,22が一体的に固着されており、圧縮スプリング19の
バネ力により係合部材21,22の円錐面を感光体ドラム１
の両端の円錐内面に圧接させることにより、摩擦力によ
り係合部材21,22と感光体ドラム１との相互回転を防止
するようにしている。支持部材16の側板14の外側の端部
にはギヤ23が固着され、複写機本体の駆動源により駆動
される図示せぬ駆動ギヤと噛合つている。これによりコ
ピー信号により駆動ギヤが回転すると、ギヤ23、支持部
材16を介して感光体ドラム１はスリツプ及びバツクラツ
シユを生ずることなく回転駆動される。The holding device for holding the photosensitive drum 1 by the supporting members 16 and 17 so as to rotate integrally therewith, and for attaching / detaching for replacement and maintenance / inspection, is exactly the same as when a photo film is loaded into a camera. Similarly, one support member 16 is axially supported on the machine frame side plate 14 so as not to be slidable in the axial direction and rotatably by a drive source, and the other support member 17 is slidable on the machine frame side plate 15 by a predetermined amount in the axial direction. And rotatably rotatably supported, and a compression spring 19 is interposed between the pressing plate 18 fixed to the outer surface of the machine frame,
The support member 16 is biased so as to be closer to the support member 16, and both support members 16 and 17 elastically clamp and support the support member 16 so as to rotate integrally. When the photosensitive drum 1 is detached, the support member 17 is removed.
Is released to the outside of the side plate 15 by releasing the force of the compression spring 19 or against it, and the distance to the other supporting member 16 is made wider than the entire length of the photosensitive drum 1, thereby Release the constraint of No. 1 and pull out in the direction shown by arrow 20 in FIG. Both ends of the photoconductor drum 1 are machined into a conical inner surface so that the end portions of the photoconductor drum 1 and the support members 16 and 17 are securely engaged so as to rotate integrally. Engagement members having conical surfaces that are in close contact with the inner surface of the cone of the photoconductor drum 1 at opposite ends of the support members 16 and 17.
21 and 22 are integrally fixed, and the conical surfaces of the engaging members 21 and 22 are made to contact with the photosensitive drum 1 by the spring force of the compression spring 19.
By making pressure contact with the inner surfaces of the cones at both ends, mutual rotation between the engagement members 21 and 22 and the photosensitive drum 1 is prevented by a frictional force. A gear 23 is fixed to the outer end of the side plate 14 of the support member 16 and meshes with a drive gear (not shown) driven by the drive source of the copying machine body. As a result, when the drive gear is rotated by the copy signal, the photosensitive drum 1 is rotationally driven via the gear 23 and the support member 16 without causing slipping and backlash.
感光体ドラム１の脱着のため支持部材17を外方に引い
て自由にした時、感光体ドラム１が複写機下部ユニツト
内に落下して破損することを防止するため、両側板14,1
5の内面の感光体ドラム１の端部のすぐ下方には、夫々
２本のピン24が植設されており、感光体ドラム１を自由
にしたときは、感光体ドラム１はこのピン24の上に安全
に受けられるようになつている。支持部材16,17が円滑
に回転するように、支持部材は軸受け25により軸支され
ている。In order to prevent the photosensitive drum 1 from falling into the lower unit of the copying machine and being damaged when the supporting member 17 is pulled outward to make the photosensitive drum 1 detachable, the side plates 14, 1
Two pins 24 are planted immediately below the end of the photoconductor drum 1 on the inner surface of the photoconductor 5. When the photoconductor drum 1 is released, the photoconductor drum 1 is It is supposed to be safely received above. The support members are pivotally supported by bearings 25 so that the support members 16 and 17 rotate smoothly.
第３図は、摺動可能な支持部材17のスプリング19によ
る加圧部近傍の構造を示す図である。支持部材17は側板
15に取付けられたベアリングケース26にベアリング25を
介して回動及びある範囲内で摺動自在に取付けられてい
る。ベアリングケース26の外周には、外側にねじを切つ
たねじリング27が圧入等の方法で固定して被せられ、こ
のねじリングのネジに螺合するねじリング28を内面に固
着した加圧ブラケツト29がねじリング28をねじリング27
に螺合させることにより取付けられている。加圧ブラケ
ツト29の図において左端には押え板30がねじにより取付
けられており、これとスプリング保持部材31の段部との
間に圧縮スプリング19を介在させ、スプリング保持部材
31がスラストベアリング32を介して支持部材17の段部33
を押圧し、通常時はスラストベアリング32がベアリング
25に近接する位置に保持される。この状態で感光体ドラ
ム１は両側の支持部材16,17で押圧挾持される。FIG. 3 is a view showing the structure of the slidable support member 17 in the vicinity of the pressing portion by the spring 19. Support member 17 is a side plate
A bearing case 26 attached to 15 is mounted via a bearing 25 so as to be rotatable and slidable within a certain range. The outer circumference of the bearing case 26 is covered with a screw ring 27 that is threaded to the outside by being fixed by a method such as press fitting, and a pressure bracket 29 with a screw ring 28 that is screwed into the screw of this screw ring is fixed on the inner surface. Screw ring 28 screw ring 27
It is attached by screwing on. A pressing plate 30 is attached to the left end of the pressurizing bracket 29 by a screw, and a compression spring 19 is interposed between the pressing plate 30 and the step portion of the spring holding member 31.
31 is a step portion 33 of the support member 17 via a thrust bearing 32.
Press the thrust bearing 32 normally
Held in a position close to 25. In this state, the photosensitive drum 1 is pressed and held by the support members 16 and 17 on both sides.
感光体ドラム１を取外す場合は加圧ブラケツト29を、
ネジリング27,28の螺合位置を変えることによつて左方
に移動させるとスプリング19の加圧力が弱くなる。さら
に左方に移動させることによりスプリングの力が解除さ
れ、支持部材17を容易に左方に引くことができる。な
お、加圧ブラケツト29が不必要に左方に移動されること
のないように、支持部材の左側端面にはストツパ33が固
着されている。When removing the photoconductor drum 1, the pressure bracket 29
When the screw rings 27 and 28 are moved to the left by changing the screwing positions, the pressure of the spring 19 is weakened. By further moving it to the left, the force of the spring is released, and the support member 17 can be easily pulled to the left. A stopper 33 is fixed to the left end surface of the support member so that the pressure bracket 29 is not unnecessarily moved to the left.
効果 以上の如く、本考案によれば、感光体ドラム脱着のた
め装置の手前側に広いスペースを必要とせず、又駆動の
伝達が駆動軸より感光体へ摩擦接触により行なわれるの
で、バツクラツシユがおこることがない。Effects As described above, according to the present invention, a large space is not required on the front side of the device for attaching and detaching the photoconductor drum, and the transmission of drive is performed by frictional contact from the drive shaft to the photoconductor, which causes backlash. Never.
しかも感光体の装着・取外しにあたって、感光体の組
み付け力を段階的に調整できるので、装置破損を回避す
ることもできる。In addition, since the force for assembling the photoconductor can be adjusted in stages when the photoconductor is attached or detached, damage to the device can be avoided.
第１図は本考案の実施例の外観を示す斜視図、第２図は
その断面図、第３図はその一方の支持部材近傍の構成を
詳細に示す断面図、第４図及び第５図は従来の感光体ド
ラムの脱着装置を示す斜視図である。 １……感光体ドラム、14,15……側板 16,17……支持部材、18……押え板 19……圧縮スプリング 21,22……円錐形係合部材 23……ギヤ、24……ピン 25……ベアリングFIG. 1 is a perspective view showing the appearance of an embodiment of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a sectional view showing in detail the structure in the vicinity of one of the supporting members, FIGS. 4 and 5. FIG. 6 is a perspective view showing a conventional photosensitive drum attaching / detaching device. 1 ... photosensitive drum, 14,15 ... side plate 16,17 …… supporting member, 18 …… pressing plate 19 …… compression spring 21,22 …… conical engaging member 23 …… gear, 24 …… pin 25 …… Bearing
Claims (2)
心の回りに回転可能に保持する静電記録装置の感光体ド
ラム保持装置において、 該保持装置は、 機枠両側板に同一軸線上に軸支され、互いに向かい合っ
た端部には感光体ドラムの両端部に形成された円錐形凹
面に摩擦力により相互回転しないように係合する円錐面
を有する１対の支持部材と、該１対の支持部材の一方を
前記円錐形凹面に押圧するための弾性部材と、 前記１対の支持部材の円錐面が前記感光体ドラム両端部
の円錐形凹面へ圧接する位置と該円錐形凹面への圧力を
解除する位置とをとりうるように、前記弾性部材の押圧
力を調整するように螺合位置可変に螺合する１対のねじ
リングを有する付勢調節手段と を有してなり、 一方の支持部材は駆動源により回転駆動可能とされてお
り、かつ少なくとも一方の支持部材は軸方向に所定の範
囲摺動可能とされ、 上記付勢調節手段の付勢力を解除することにより、１対
の支持部材の互いに向かい合った端面間の距離を、感光
体ドラムの長さ以上とすることが可能であること を特徴とする感光体ドラム保持装置。1. A photoconductor drum holding device for an electrostatic recording device, which holds a photoconductor drum rotatably around its axis on both side plates of the machine frame, wherein the holding device is the same on both side plates of the machine frame. A pair of support members that are axially supported and that have conical surfaces that face each other and that engage with conical concave surfaces formed at both ends of the photosensitive drum so as not to rotate due to frictional force; An elastic member for pressing one of the pair of supporting members against the conical concave surfaces; a position where the conical surfaces of the pair of supporting members are in pressure contact with the conical concave surfaces of both ends of the photosensitive drum; And a biasing adjusting means having a pair of screw rings that are screwed in a variable screwing position so as to adjust the pressing force of the elastic member so as to take a position for releasing the pressure on the concave surface. One of the support members can be driven to rotate by the drive source. And at least one of the support members is slidable in a predetermined range in the axial direction, and by releasing the biasing force of the bias adjusting means, the distance between the end faces of the pair of support members facing each other. Is longer than the length of the photosensitive drum, the photosensitive drum holding device.
りに互いに枢着された上部ユニットと下部ユニットとよ
り成る静電記録装置の一方のユニットの機枠側板に、上
記枢着軸と平行な軸線上に配設されていることを特徴と
する実用新案登録請求の範囲第１項に記載の感光体ドラ
ム保持装置。2. A pair of supporting members are attached to a machine frame side plate of one unit of an electrostatic recording apparatus, which comprises an upper unit and a lower unit pivotally connected to each other at one end about a pivot shaft. The photoconductor drum holding device according to claim 1, wherein the photoconductor drum holding device is arranged on an axis parallel to the attachment axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986101387U JP2511575Y2 (en) | 1986-07-03 | 1986-07-03 | Electrostatic recording device photosensitive drum holding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986101387U JP2511575Y2 (en) | 1986-07-03 | 1986-07-03 | Electrostatic recording device photosensitive drum holding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS638765U JPS638765U (en) | 1988-01-21 |
| JP2511575Y2 true JP2511575Y2 (en) | 1996-09-25 |
Family
ID=30972073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986101387U Expired - Lifetime JP2511575Y2 (en) | 1986-07-03 | 1986-07-03 | Electrostatic recording device photosensitive drum holding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2511575Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2526867Y2 (en) * | 1990-04-26 | 1997-02-26 | 株式会社リコー | Image forming device |
| JP2526866Y2 (en) * | 1990-04-26 | 1997-02-26 | 株式会社リコー | Image forming device |
| JP4998453B2 (en) * | 2008-12-18 | 2012-08-15 | 富士ゼロックス株式会社 | Photoconductor support structure and image forming apparatus |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56122047A (en) * | 1980-02-29 | 1981-09-25 | Toshiba Corp | Electronic copier |
| JPS5813559U (en) * | 1981-07-17 | 1983-01-27 | 株式会社リコー | Mounting structure of cylindrical photoreceptor |
| JPS5877356U (en) * | 1981-11-18 | 1983-05-25 | 株式会社リコー | electronic copy machine |
| JPS5888667U (en) * | 1981-12-10 | 1983-06-16 | 株式会社リコー | electronic copy machine |
-
1986
- 1986-07-03 JP JP1986101387U patent/JP2511575Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS638765U (en) | 1988-01-21 |
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