JP2922634B2 - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JP2922634B2 JP2922634B2 JP2332287A JP33228790A JP2922634B2 JP 2922634 B2 JP2922634 B2 JP 2922634B2 JP 2332287 A JP2332287 A JP 2332287A JP 33228790 A JP33228790 A JP 33228790A JP 2922634 B2 JP2922634 B2 JP 2922634B2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- developing device
- case
- side plate
- separator
- 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 - Fee Related
Links
Landscapes
- Dry Development In Electrophotography (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は複写機等画像形成装置の二成分現像装置に関
するものである。Description: TECHNICAL FIELD The present invention relates to a two-component developing device for an image forming apparatus such as a copying machine.
従来、複写機等の画像形成装置においては、第５図及
び第６図に示すように、感光体117に形成された潜像を
現像する現像装置は、下ケース101と前側板102及び後側
板103を有するケースを備え、前側板102及び後板側103
は下ケース101と分割可能に形成される。下ケース101に
取付けられる前側板102と後側板103に現像ローラ104、
パドル105、混合ローラ106が回転可能に支持され、下ケ
ース101の上に現像ローラ104、パドル105、混合ローラ1
06をカバーするように上ケース107を取付ける。上ケー
ス107の下にはセパレータ108が配置され、該セパレータ
108は前側板102に取付ネジ109で取り付けられ、後側板1
03から突出しているピン103aにセパレータ取付穴を引掛
ける様にする。上ケース107とセパレータ108の間に配置
される現像ドクタ110は前側板102と後側板103に取付ね
じ111（４ケ）で取り付けられる。セパレータ108内に入
る搬送スクリュ112は後側板103に設けられている軸受11
3用取付穴103bに外側から挿入して前側板102の軸受用穴
102bに挿入し、Ｅリング114により止められ、その際搬
送スクリュ112の駆動側は軸受113に装着されギヤ115が
取付けられ、Ｅリング116により止められる。Conventionally, in an image forming apparatus such as a copying machine, as shown in FIGS. 5 and 6, a developing device for developing a latent image formed on the photosensitive member 117 includes a lower case 101, a front plate 102, and a rear plate. A case having a front plate 102 and a rear plate 103
Is formed so as to be separable from the lower case 101. Developing roller 104 on front plate 102 and rear plate 103 attached to lower case 101,
A paddle 105 and a mixing roller 106 are rotatably supported, and a developing roller 104, a paddle 105, and a mixing roller 1 are provided on a lower case 101.
Attach upper case 107 to cover 06. A separator 108 is disposed below the upper case 107,
108 is attached to the front plate 102 with mounting screws 109, and the rear plate 1
The separator mounting hole should be hooked on the pin 103a protruding from 03. The developing doctor 110 arranged between the upper case 107 and the separator 108 is attached to the front plate 102 and the rear plate 103 with four mounting screws 111. The conveying screw 112 that enters the separator 108 has a bearing 11 provided on the rear plate 103.
Insert from the outside into the mounting hole 103b for 3 and the bearing hole of the front side plate 102
The conveying screw 112 is mounted on a bearing 113, a gear 115 is mounted, and stopped by an E-ring 116.
従来の複写機に於ける現像装置では、搬送スクリュは
ケースの両側板間にセパレータを取付けた後、側板の搬
送スクリュ外径より大きな径をもつ穴に通し、反対側の
側板側に搬送スクリュ軸の先端をＥリングによって止め
ている。このような構成の場合、組立上部品点数も多
く、組立工数もかかるという欠点がある。また、搬送ス
クリュの外径もそれ程大きくすることが出来ない。更
に、搬送スクリュの軸受１部への剤進入等により、現像
ケースからの剤のもれや、異音の発生等種々の問題点が
生じる。In the developing device of a conventional copier, the transfer screw has a separator between both side plates of the case, and then passes through a hole with a diameter larger than the outer diameter of the transfer screw on the side plate, and the transfer screw shaft on the opposite side plate side. Is stopped by an E-ring. In the case of such a configuration, there are disadvantages in that the number of parts is large in assembling and the number of assembling steps is increased. Further, the outer diameter of the transfer screw cannot be so large. Further, various problems, such as leakage of the developer from the developing case and generation of abnormal noise, occur due to the penetration of the developer into the bearing 1 of the transport screw.
本発明は、上記の従来の問題点を解消し、数少ない部
品で簡単に組付可能である現像装置を提供することを課
題とする。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems and to provide a developing device which can be easily assembled with a small number of components.
本発明は、上記の課題を、現像剤を搬送する搬送スク
リュを備え、該搬送スクリュのための軸受を有する現像
装置において、前記搬送スクリュの軸受に対する挿入・
取り抜きの際に撓み可能なように、搬送スクリュの軸端
部が二股に分かれて形成され、この二股に分かれて形成
された軸端部の先端に爪部が形成され、かつ該軸端部の
根元部にフランジ部が形成されていることを特徴とする
現像装置により解決した。The present invention solves the above-mentioned problem by providing a conveying screw for conveying a developer, and a developing device having a bearing for the conveying screw, wherein the insertion and insertion of the conveying screw into the bearing is performed.
In order to be able to bend at the time of removal, the shaft end of the conveying screw is formed in two forks, and a claw portion is formed at the tip of the shaft end formed in two forks, and the shaft end is formed. The problem has been solved by a developing device characterized in that a flange portion is formed at the root of.
本発明により、搬送スクリュの軸端部が撓んで現像装
置の軸受に該軸端部先端の爪部が挿入され、挿入された
位置で該爪部が軸受に係合して、軸端部の根元にあるフ
ランジ部によって搬送スクリュのスラスト方向の規制が
行われる。その結果、一定以上の力を作用しないと、軸
受から搬送スクリュを簡単に抜き取ることができないこ
ととなり、少ない部品点数で確実に搬送スクリュを装着
することが可能で、組立操作が簡単になった。According to the present invention, the shaft end of the conveying screw is bent, and the claw at the tip of the shaft end is inserted into the bearing of the developing device, and the claw engages with the bearing at the inserted position, thereby forming the shaft end. The thrust direction of the transfer screw is regulated by the flange at the base. As a result, the transfer screw cannot be easily removed from the bearing unless a certain force is applied, and the transfer screw can be securely mounted with a small number of parts, thereby simplifying the assembling operation.
本発明の詳細を図に示す実施例に基づいて説明する。 The details of the present invention will be described based on an embodiment shown in the drawings.
第１図〜第４図において、現像ケース１は下ケース２
と両側板3a、3bとが一体となって構成されている。セパ
レータ４の一端（例えば奥側側板3aに対向する端部）に
２個の突起５が、例えば第１突起5aと第２突起5bが設け
られ、現像ケース１の対応する側板３（例えば奥側側板
3a）に設けた２個のリブ６の間に形成される溝部に第１
突起5aが差し込まれ、同側板3aに設けた溝７に第２突起
5bが差し込まれる。セパレータ４の他端（例えば手前側
側板3bに対向する端部）に２個の突起８が、例えば第１
突起8aと第２突起8bが設けられ、現像ケース１の対応す
る側板３（例えば手前側側板3b）に設けた２個のリブ９
の間に形成される溝部に第１突起8aが差し込まれ、同側
板3bに設けた溝10に第２突起8bが差し込まれる。この
時、ケース１の両側板3aと3bの距離l1とセパレータ４の
両端の突起５と８の先端間の距離l2がl1＜l2の関係を満
足するように設定する。図の実施例では例えばl1＝310m
m、l2＝313mmとしている。1 to 4, a developing case 1 is a lower case 2
And both side plates 3a and 3b are integrally formed. Two protrusions 5, for example, a first protrusion 5a and a second protrusion 5b are provided at one end of the separator 4 (for example, an end facing the back side plate 3a), and the corresponding side plate 3 (for example, the back side Side plate
A first groove is formed between two ribs 6 provided in 3a).
The protrusion 5a is inserted, and the second protrusion is inserted into the groove 7 provided in the side plate 3a.
5b is inserted. At the other end of the separator 4 (for example, the end facing the front side plate 3b), two protrusions 8
A protrusion 8a and a second protrusion 8b are provided, and two ribs 9 provided on the corresponding side plate 3 (for example, the front side plate 3b) of the developing case 1 are provided.
The first protrusion 8a is inserted into a groove formed between the first and second grooves, and the second protrusion 8b is inserted into a groove 10 provided in the same side plate 3b. The distance l 2 between the tip ends of the projections 5 and 8 of the distance both side plates 3a and 3b of the case 1 l 1 and the separator 4 is set to satisfy the relationship of l 1 <l 2. In the illustrated embodiment, for example, l 1 = 310 m
m, l 2 = 313 mm.
セパレータ４をケース１の両側板3aと3bに組付ける
際、最初に矢印Ａで示すようにセパレータ４の第１突起
5aと第２突起5bをケース１の奥側側板3aのリブ６の間に
形成される溝部と溝７に差込み、次いでセパレータ４の
第１突起8aと第２突起8bをケース１の手前側側板3bのリ
ブ９の間に形成される溝部と溝10に落とし込む。When assembling the separator 4 to both side plates 3 a and 3 b of the case 1, first, as shown by an arrow A,
5a and the second protrusion 5b are inserted into the groove and the groove 7 formed between the ribs 6 of the rear side plate 3a of the case 1, and then the first protrusion 8a and the second protrusion 8b of the separator 4 are connected to the front side plate of the case 1. It is dropped into the groove formed between the ribs 9 of 3b and the groove 10.
セパレータ４には、搬送スクリュ11用の軸受12が設け
られており、一方、手前側端部にシール部材13を装着し
た搬送スクリュ11は現像ケース１の奥側開口部14から挿
入され、搬送スクリュ11の手前側端部15が軸受12に挿入
され、軸受12から突出するようにセットする。搬送スク
リュ11の端部には第３図、第４図に示すように、シール
部材13（図２）等を当接するフランジ部17が設けられ、
更にフランジ部17の外側の軸部18に爪部19が形成され、
該爪部19を設けた部分には溝16を形成して爪部19を設け
た部分が撓むことを可能にし、爪部19の軸受12に対する
挿入並びに軸受12からの抜取りを可能にする。The separator 4 is provided with a bearing 12 for the transport screw 11. On the other hand, the transport screw 11 having the seal member 13 attached to the front end is inserted through the rear opening 14 of the developing case 1, 11 is set so that the front end 15 is inserted into the bearing 12 and protrudes from the bearing 12. As shown in FIGS. 3 and 4, a flange portion 17 is provided at an end of the transfer screw 11 for contacting the seal member 13 (FIG. 2) and the like.
Further, a claw portion 19 is formed on a shaft portion 18 outside the flange portion 17,
A groove 16 is formed in the portion where the claw portion 19 is provided to allow the portion where the claw portion 19 is provided to bend, so that the claw portion 19 can be inserted into and removed from the bearing 12.
ケース１の両側板3aと3b間の距離l1と搬送スクリュ11
の長さl3との関係はl1＞l3となるように設定する。本実
施例ではl1＝310mm、l3＝309.4mmとする。Distance l 1 between both side plates 3 a and 3 b of case 1 and transfer screw 11
Relationship between the length l 3 of the is set to be l 1> l 3. In this embodiment, l 1 = 310 mm and l 3 = 309.4 mm.
現像ローラ21は一端が一方の側板3bに装着され、他端
は軸受20に支持され、該軸受20は他方の側板3aに固定さ
れる。One end of the developing roller 21 is mounted on one side plate 3b, and the other end is supported by a bearing 20, and the bearing 20 is fixed to the other side plate 3a.
本発明により、搬送スクリュの軸端部を撓ませること
で、現像装置の軸受に該軸端部先端の爪部をワンタッチ
式に挿入でき、挿入位置で該爪部を軸受に係合装着させ
ることができるので、搬送スクリュに対する抜け止め防
止部品や締結部品を特に必要とせず、部品点数の削減及
び組立工程の削減を可能とし、コストを低減することが
可能になった。According to the present invention, by bending the shaft end of the conveying screw, the claw at the end of the shaft end can be inserted into the bearing of the developing device in a one-touch manner, and the claw is engaged with the bearing at the insertion position. Therefore, it is possible to reduce the number of parts and the number of assembling steps, and to reduce the cost, without particularly needing a retaining part or a fastening part for the transfer screw.
軸端部の根元にフランジ部が形成されているので、搬
送スクリュのスラスト方向における規制を行うことがで
き、また軸受部への剤の侵入や異音の発生を防ぐことも
できる。該フランジ部を有する箇所にシール部材を挿入
すれば、上記効果を一層効果的に奏することが可能であ
る。Since the flange portion is formed at the root of the shaft end, regulation in the thrust direction of the conveying screw can be performed, and intrusion of the agent into the bearing portion and generation of abnormal noise can be prevented. If the seal member is inserted into the location having the flange portion, the above effect can be more effectively achieved.
第１図は本発明に係る現像装置の主要部の分解斜視図、
第２図は別の方向からみた分解斜視図、第３図は搬送ス
クリュの端部の拡大図、第４図は第３図の左側面図、第
５図は従来の現像装置の断面図、第６図は従来の現像装
置の分解斜視図である。 １……ケース、２……下ケース ３……側板、４……セパレータ 11……搬送スクリュ、12……軸受 13……シール部材、16……溝 19……爪部FIG. 1 is an exploded perspective view of a main part of a developing device according to the present invention,
FIG. 2 is an exploded perspective view seen from another direction, FIG. 3 is an enlarged view of an end of the conveying screw, FIG. 4 is a left side view of FIG. 3, FIG. 5 is a sectional view of a conventional developing device, FIG. 6 is an exploded perspective view of a conventional developing device. DESCRIPTION OF SYMBOLS 1 ... Case, 2 ... Lower case 3 ... Side plate, 4 ... Separator 11 ... Conveying screw, 12 ... Bearing 13 ... Seal member, 16 ... Groove 19 ... Claw
Claims (1)
搬送スクリュのための軸受を有する現像装置において、 前記搬送スクリュの軸受に対する挿入・取り抜きの際に
撓み可能なように、搬送スクリュの軸端部が二股に分か
れて形成され、この二股に分かれて形成された軸端部の
先端に爪部が形成され、かつ該軸端部の根元部にフラン
ジ部が形成されていることを特徴とする現像装置。1. A developing device comprising a transport screw for transporting a developer, the bearing having a bearing for the transport screw, wherein the transport screw is bent so as to be able to bend when the transport screw is inserted into or removed from the bearing. The shaft end is formed in two forks, a claw is formed at the tip of the shaft end formed in two forks, and a flange is formed at the root of the shaft end. Developing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2332287A JP2922634B2 (en) | 1990-11-29 | 1990-11-29 | Developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2332287A JP2922634B2 (en) | 1990-11-29 | 1990-11-29 | Developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04199077A JPH04199077A (en) | 1992-07-20 |
| JP2922634B2 true JP2922634B2 (en) | 1999-07-26 |
Family
ID=18253267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2332287A Expired - Fee Related JP2922634B2 (en) | 1990-11-29 | 1990-11-29 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2922634B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005338616A (en) * | 2004-05-28 | 2005-12-08 | Kyocera Mita Corp | Toner cartridge |
| US7526237B2 (en) | 2005-10-26 | 2009-04-28 | Kyocera Mita Corporation | Rotary mounting structure for toner cartridge |
-
1990
- 1990-11-29 JP JP2332287A patent/JP2922634B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04199077A (en) | 1992-07-20 |
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