JP3484676B2 - Paper transport device - Google Patents
Paper transport deviceInfo
- Publication number
- JP3484676B2 JP3484676B2 JP23134795A JP23134795A JP3484676B2 JP 3484676 B2 JP3484676 B2 JP 3484676B2 JP 23134795 A JP23134795 A JP 23134795A JP 23134795 A JP23134795 A JP 23134795A JP 3484676 B2 JP3484676 B2 JP 3484676B2
- Authority
- JP
- Japan
- Prior art keywords
- drive transmission
- transmission gear
- roller
- outer flange
- gear
- 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
- Delivering By Means Of Belts And Rollers (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Gear Transmission (AREA)
- Facsimiles In General (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ファクシミリ，レ
ーザプリンタ，複写機，スキャナ等の画像形成／読取部
に適用され、原稿等を搬送するための用紙搬送装置に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper transporting device which is applied to an image forming / reading unit such as a facsimile, a laser printer, a copying machine, a scanner, etc. and which transports a document or the like.
【０００２】[0002]
【従来の技術】従来、ファクシミリ等の自動原稿搬送装
置(ＡＤＦ)あるいはスキャナ部の組立は、左右一対の側
板を装置本体の底カバーまたは底板部分に予め組み込ん
だ状態にして、軸受をセットした後、搬送ローラ等を取
り付け、最後に駆動／従動歯車を組み付けるようにして
いた。2. Description of the Related Art Conventionally, in the assembly of an automatic document feeder (ADF) such as a facsimile or a scanner unit, after a pair of left and right side plates are assembled in advance in a bottom cover or a bottom plate portion of the apparatus body, a bearing is set. , A conveying roller and the like are attached, and finally a drive / driven gear is assembled.
【０００３】また従来では、モータあるいは搬送ローラ
等を交換するメンテナンスに際し、歯車類を装置本体に
セットされている状態からスラスト方向に引き抜いた
り、歯車類をセットされたままの状態にして、搬送ロー
ラの支持軸を歯車類のセット箇所から反対側に引き抜い
ていた。Further, conventionally, at the time of maintenance for replacing the motor or the conveyance roller, the gears are pulled out in the thrust direction from the state where they are set in the main body of the apparatus, or the gears are left set and the conveyance rollers are set. The support shaft of was pulled out to the opposite side from the place where the gears were set.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前記従
来の技術では、軸受や歯車等を狭い空間で組み立てなけ
ればならず、その組立時に軸受や歯車等をセット中に脱
落させることがしばしばあり、作業性に問題があった。However, in the above-mentioned conventional technique, the bearings, gears, etc. must be assembled in a narrow space, and the bearings, gears, etc. are often dropped during the assembly, which is a problem. There was a problem with sex.
【０００５】また前記交換時において搬送ローラの支持
軸を引き抜く際に、歯車類が脱落してしまうことがあ
り、再度組み立てるときには、上述したように狭い空間
で組み立てなければならず、作業性がよくなかった。Further, when the support shaft of the conveying roller is pulled out at the time of the replacement, gears may drop out, and when reassembling, it is necessary to assemble in a narrow space as described above, and workability is good. There wasn't.
【０００６】そこで、本発明は、前記従来の問題を解決
し、用紙の搬送を行うローラおよびその関連部材の取り
付け、取り外しの作業性を向上させることができる用紙
搬送装置を提供することを目的とする。Therefore, an object of the present invention is to solve the above-mentioned conventional problems and to provide a sheet conveying apparatus capable of improving the workability of attaching and detaching a roller for conveying a sheet and its related members. To do.
【０００７】[0007]
【課題を解決するための手段】前記目的を達成するた
め、本発明は、相対向して設置された側板間に用紙の搬
送を行うローラを配置し、このローラの支持軸の両端を
前記各側板にそれぞれ軸受を介して保持し、前記支持軸
の端部に駆動伝達歯車を固定し、この駆動伝達歯車に回
転力を伝達するため減速用歯車を噛合させてなる用紙搬
送装置において、駆動伝達歯車を軸受の外側フランジと
減速用歯車に設けた大径部の内側とで挾持して、さらに
前記駆動伝達歯車に内径が前記外側フランジの外径より
僅かに大きい係合部を同心円状に形成し、この係合部を
前記外側フランジに嵌合させたことを特徴とする。In order to achieve the above object, according to the present invention, a roller for conveying a sheet is arranged between side plates installed opposite to each other, and both ends of a support shaft of the roller are arranged at the above-mentioned respective ends. In a sheet conveying device in which a side plate is held via bearings, respectively, a drive transmission gear is fixed to an end of the support shaft, and a reduction gear is meshed to transmit a rotational force to the drive transmission gear. The gear is sandwiched between the outer flange of the bearing and the inner side of the large diameter portion provided in the reduction gear, and further, the drive transmission gear is formed with concentric engagement portions with an inner diameter slightly larger than the outer diameter of the outer flange. The engaging portion is fitted to the outer flange.
【０００８】 また相対向して設置された側板間に用紙
の搬送を行うローラを配置し、このローラの支持軸の両
端を前記各側板にそれぞれ軸受を介して保持し、前記支
持軸の端部に駆動伝達歯車を固定し、この駆動伝達歯車
に回転力を伝達するため減速用歯車を噛合させてなる用
紙搬送装置において、前記駆動伝達歯車に内径が前記軸
受の外側フランジの径より僅かに大きい係合部を同心円
状に形成し、しかもこの係合部を前記外側フランジに嵌
合させた際に、前記外側フランジに設けられた係止段部
と係合する爪部を前記係合部に設けたことを特徴とす
る。In addition , the paper is placed between the side plates installed opposite to each other.
A roller for transporting the
The ends are held on the side plates via bearings, respectively, and
Fix the drive transmission gear to the end of the holding shaft.
For engaging a reduction gear to transmit rotational force to
In the paper conveying apparatus, an inner diameter in the drive transmission gear the shaft
An engaging portion slightly larger than the diameter of the outer flange of the receiver is formed concentrically, and when the engaging portion is fitted to the outer flange, it engages with a locking step provided on the outer flange. The engaging portion is provided with a matching claw portion.
【０００９】また前記ローラが原稿の分離搬送を行うロ
ーラ、あるいは原稿を原稿読取部に搬送するローラであ
ることを特徴とする。Further, the roller is a roller for separating and conveying the original document, or a roller for conveying the original document to the original reading section.
【００１０】また前記係合部が前記駆動伝達歯車に同心
円状に形成したリブ、あるいは駆動伝達歯車に同心状に
形成した凹部であることを特徴とする。Further, the engaging portion is a rib formed concentrically on the drive transmission gear or a recess formed concentrically on the drive transmission gear.
【００１１】[0011]
【発明の実施の形態】以下、本発明の好適な実施の形態
を図面に基づいて説明する。BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to the drawings.
【００１２】図１は本発明の第１実施形態である原稿搬
送／読取装置の構成を示す平面断面図、図２は第１実施
形態の正面断面図、図３は第１実施形態の斜視図であ
り、１は装置本体２の上面に設置された原稿セット部、
３は原稿分離搬送ローラ、４は原稿分離搬送ローラ３に
スプリング５の弾性力を受けて弾接する分離パッド、６
は原稿スキャナ、７は原稿スキャナ６に接するスキャナ
ローラ、８，８は原稿分離搬送ローラ３と原稿スキャナ
６との間に設けられた一対の搬送ローラ、９は原稿排紙
口、10，10は装置本体２内に設けられた底板11に相対向
して設置された側板である。FIG. 1 is a plan sectional view showing the structure of a document feeding / reading apparatus according to a first embodiment of the present invention, FIG. 2 is a front sectional view of the first embodiment, and FIG. 3 is a perspective view of the first embodiment. 1 is a document setting section installed on the upper surface of the apparatus main body 2,
Reference numeral 3 is a document separating / conveying roller, 4 is a separating pad which elastically contacts the document separating / conveying roller 3 by the elastic force of a spring 5, and 6
Is a document scanner, 7 is a scanner roller in contact with the document scanner 6, 8 and 8 are a pair of transport rollers provided between the document separating and transporting roller 3 and the document scanner 6, 9 is a document discharge port, and 10 and 10 are It is a side plate installed opposite to a bottom plate 11 provided in the apparatus main body 2.
【００１３】前記側板10間には、前記原稿分離搬送ロー
ラ３と、スキャナローラ７と、一対の搬送ローラ８とが
配置されており、各ローラ３，７，８は、各側板10に固
定された軸受12によって支承された支持軸13，14，15に
てそれぞれ支持されている。一方の側板10には、内壁に
駆動モータ16が固定されており、さらに外壁に前記駆動
モータ16の出力歯車17に噛合する大径歯車部18aと、こ
の大径歯車部18aの内側に小径歯車部18bとが形成された
減速用歯車18が支軸18cに回転可能に支持されている。The document separating / conveying roller 3, the scanner roller 7, and the pair of conveying rollers 8 are arranged between the side plates 10, and the rollers 3, 7, 8 are fixed to the side plates 10. Are supported by supporting shafts 13, 14, 15 supported by bearings 12, respectively. A drive motor 16 is fixed to the inner wall of one of the side plates 10, and a large-diameter gear portion 18a meshing with the output gear 17 of the drive motor 16 is further provided on the outer wall, and a small-diameter gear portion inside the large-diameter gear portion 18a. A reduction gear 18 having a portion 18b is rotatably supported by a support shaft 18c.
【００１４】前記原稿分離搬送ローラ３を支持する支持
軸13における一方の側板10より突出した端部には、前記
減速用歯車18の小径歯車部18bと噛合する第１の駆動伝
達歯車19が固定されており、また、前記搬送ローラ８の
一方を支持する支持軸15における一方の側板10より突出
した端部には、前記減速用歯車18の小径歯車部18bと噛
合する第２の駆動伝達歯車20が固定されている。さら
に、前記スキャナローラ７を支持する支持軸14における
一方の側板10より突出した端部には、前記搬送ローラ８
の駆動伝達歯車20と噛合する第３の駆動伝達歯車21が固
定されている。A first drive transmission gear 19 that meshes with a small diameter gear portion 18b of the reduction gear 18 is fixed to an end portion of the support shaft 13 that supports the document separating / conveying roller 3 protruding from one side plate 10. A second drive transmission gear that meshes with a small-diameter gear portion 18b of the reduction gear 18 is provided at an end portion of the support shaft 15 that supports one of the transport rollers 8 and projects from one side plate 10. Twenty is fixed. Further, at the end of the support shaft 14 supporting the scanner roller 7 protruding from the one side plate 10, the carrying roller 8 is provided.
The third drive transmission gear 21 that meshes with the drive transmission gear 20 is fixed.
【００１５】前記第１の駆動伝達歯車19と第２の駆動伝
達歯車20とは、それぞれ支持軸13の軸受12の外側フラン
ジ12aと、前記減速用歯車18の大径歯車部18aの内側とに
よって挾持されるように、軸受12の外側フランジ12aと
大径歯車部18aとの間に介在しており、さらに図４の拡
大断面図に示すように、第１の駆動伝達歯車19と第２の
駆動伝達歯車20とには、前記外側フランジ12aの外径よ
りも内径が僅かに大きい係合部としてのリブ22が同心円
状に突設され、このリブ22内に前記外側フランジ12aを
嵌合させている。The first drive transmission gear 19 and the second drive transmission gear 20 are formed by the outer flange 12a of the bearing 12 of the support shaft 13 and the inner side of the large-diameter gear portion 18a of the reduction gear 18, respectively. It is interposed between the outer flange 12a of the bearing 12 and the large-diameter gear portion 18a so as to be held, and further, as shown in the enlarged sectional view of FIG. The drive transmission gear 20 and a rib 22 as an engaging portion having an inner diameter slightly larger than the outer diameter of the outer flange 12a are concentrically projected, and the outer flange 12a is fitted in the rib 22. ing.
【００１６】したがって、前記第１の駆動伝達歯車19と
第２の駆動伝達歯車20とは、スラスト方向において、前
記外側フランジ12aと大径歯車部18aの内側とによって動
きが規制され、またラジアル方向において、外側フラン
ジ12aとリブ22との当接によって動きが規制されて、位
置決めされることになる。Therefore, the movements of the first drive transmission gear 19 and the second drive transmission gear 20 are restricted in the thrust direction by the outer flange 12a and the inner side of the large diameter gear portion 18a, and also in the radial direction. In, the movement is regulated by the contact between the outer flange 12a and the rib 22, and the outer flange 12a and the rib 22 are positioned.
【００１７】また前記第３の駆動伝達歯車21は、その側
板10側に拡径部21aが設けられ、拡径部21aが前記第２の
駆動伝達歯車20の内側と当接するようになっており、さ
らに軸受12の外側フランジ12aの外径よりも内径が僅か
に大きい係合部としての凹部23が同心円状に形成され、
この凹部23内に前記外側フランジ12aを嵌合させてい
る。Further, the third drive transmission gear 21 is provided with an enlarged diameter portion 21a on the side plate 10 side thereof, and the enlarged diameter portion 21a is brought into contact with the inner side of the second drive transmission gear 20. Further, the concave portion 23 as an engaging portion having an inner diameter slightly larger than the outer diameter of the outer flange 12a of the bearing 12 is formed concentrically,
The outer flange 12a is fitted in the recess 23.
【００１８】したがって、前記第３の駆動伝達歯車21
は、スラスト方向において、前記外側フランジ12aと大
径歯車部18aの内側とによって動きが規制され、またラ
ジアル方向において、外側フランジ12aと凹部23との当
接によって動きが規制されて、位置決めされることにな
る。Therefore, the third drive transmission gear 21
The movement is regulated in the thrust direction by the outer flange 12a and the inner side of the large-diameter gear portion 18a, and in the radial direction, the movement is regulated by the contact between the outer flange 12a and the recessed portion 23 and is positioned. It will be.
【００１９】各支持軸13，14，15における歯車設置側と
反対側は、その端部における軸受12内側部分にＥ字状の
係止リング25を嵌着することによって、スラスト方向の
位置決めが行われる。Positioning in the thrust direction is performed by fitting an E-shaped locking ring 25 on the inner side of the bearing 12 at the end of each of the support shafts 13, 14 and 15 on the side opposite to the gear installation side. Be seen.
【００２０】図５に示した本発明の第２実施形態におけ
る要部の拡大断面図のように、第１の駆動伝達歯車19と
第２の駆動伝達歯車20とにおける係合部として、前記第
３の駆動伝達歯車21の係合部と同様に、前記外側フラン
ジ12aの外径よりも内径が僅かに大きい凹部26を同心円
状に設け、この凹部26内に前記外側フランジ12aを嵌合
させることも考えられる。As shown in the enlarged cross-sectional view of the main part of the second embodiment of the present invention shown in FIG. 5, the first drive transmission gear 19 and the second drive transmission gear 20 serve as the engaging portions, and Similarly to the engagement portion of the drive transmission gear 21 of No. 3, the recess 26 having an inner diameter slightly larger than the outer diameter of the outer flange 12a is concentrically provided, and the outer flange 12a is fitted in the recess 26. Can also be considered.
【００２１】このように第１，第２実施形態において
は、特に、駆動伝達歯車19，20を、組立時には、上述し
たスラスト方向とラジアル方向との規制によって、予め
所定の位置に設置した状態に保持しておくことができる
ので、脱落することがない状態にて組立が容易に行え
る。また支持軸13，15を取り外ずしても、上述したスラ
スト方向とラジアル方向との規制によって脱落すること
がなく、分解および支持軸の再取り付け作業が簡単に行
える。As described above, in the first and second embodiments, in particular, the drive transmission gears 19 and 20 are preliminarily installed at predetermined positions at the time of assembly by the above-described regulation in the thrust direction and the radial direction. Since it can be held, it can be easily assembled without falling off. Further, even if the support shafts 13 and 15 are not removed, the support shafts 13 and 15 do not fall off due to the regulation in the thrust direction and the radial direction, and the disassembling work and the reattachment work of the support shafts can be easily performed.
【００２２】図６は本発明の第３実施形態における要部
を示す断面図であり、この第３実施形態は、基本構成が
前記第１実施形態と同様であって、図１〜図４にて説明
した部材と同一部材には同一符号を付して詳しい説明は
省略するが、係合部の構成が異なる。FIG. 6 is a cross-sectional view showing the main part of the third embodiment of the present invention. This third embodiment has the same basic structure as that of the first embodiment, and FIGS. The same members as those described above are designated by the same reference numerals and detailed description thereof is omitted, but the configuration of the engaging portion is different.
【００２３】図６において、第１の駆動伝達歯車19と第
２の駆動伝達歯車20とは、それぞれ支持軸13の軸受12の
外側フランジ12aと、前記減速用歯車18の大径歯車部18a
の内側とによって挾持されるように、軸受12の外側フラ
ンジ12aと大径歯車部18aとの間に介在している。軸受12
は、側板10側に設けられた小径スリーブ12bが側板10に
カシメ固定(Ｋ部分)され、軸受12は側板10に固定されて
いる。さらに、図７の拡大断面図に示すように、第１の
駆動伝達歯車19と第２の駆動伝達歯車20とには、前記外
側フランジ12aの外径よりも内径が僅かに大きい係合部
としてのリブ22が同心円状に突設され、このリブ22の先
端部に前記外側フランジ12aの係止段部12cと係合する爪
部22aが設けられている。In FIG. 6, the first drive transmission gear 19 and the second drive transmission gear 20 are an outer flange 12a of the bearing 12 of the support shaft 13 and a large-diameter gear portion 18a of the reduction gear 18, respectively.
It is interposed between the outer flange 12a of the bearing 12 and the large-diameter gear portion 18a so as to be held by the inside of the bearing. Bearing 12
The small-diameter sleeve 12b provided on the side plate 10 side is caulked to the side plate 10 (K portion), and the bearing 12 is fixed to the side plate 10. Further, as shown in the enlarged cross-sectional view of FIG. 7, the first drive transmission gear 19 and the second drive transmission gear 20 are provided with engaging portions having an inner diameter slightly larger than the outer diameter of the outer flange 12a. The rib 22 is concentrically formed so as to project, and a claw portion 22a that engages with the locking step portion 12c of the outer flange 12a is provided at the tip of the rib 22.
【００２４】したがって、前記第１の駆動伝達歯車19と
第２の駆動伝達歯車20とは、スラスト方向において、前
記外側フランジ12aと大径歯車部18aの内側とによって動
きが規制され、またラジアル方向において、外側フラン
ジ12aの係止段部12cにリブ22の爪部22aが包むようにし
て係合することによって動きが規制されて、位置決めさ
れることになる。Therefore, the movements of the first drive transmission gear 19 and the second drive transmission gear 20 are restricted in the thrust direction by the outer flange 12a and the inner side of the large diameter gear portion 18a, and also in the radial direction. In the above, the claw portion 22a of the rib 22 engages with the locking step portion 12c of the outer flange 12a so as to wrap it, so that the movement is restricted and the positioning is performed.
【００２５】図８に示した本発明の第４実施形態におけ
る要部の拡大断面図のように、第１の駆動伝達歯車19と
第２の駆動伝達歯車20とにおける係合部として、前記外
側フランジ12aの外径よりも内径が僅かに大きい凹部26
を同心円状に設け、この凹部26の外角周端に前記外側フ
ランジ12aの係止段部12cと係合する爪部26aを設けるこ
とも考えられる。As shown in FIG. 8 which is an enlarged cross-sectional view of an essential part of the fourth embodiment of the present invention, the outer side serves as an engaging portion between the first drive transmission gear 19 and the second drive transmission gear 20. Recess 26 with an inner diameter slightly larger than the outer diameter of the flange 12a
It is also conceivable to provide the concentric circles and to provide the claw portion 26a that engages with the locking step 12c of the outer flange 12a at the outer peripheral edge of the recess 26.
【００２６】なお、第３，４実施形態における爪部22
a，26aは、第１の駆動伝達歯車19と第２の駆動伝達歯車
20の成形時、一体にモールド成形するようにし、爪部22
a，26aに弾性を持たせ、爪部22a，26aを外側フランジ12
aの係止段部12c方向に挿入していくと、爪部22a，26aが
外方へ撓んで係止段部12c部分において元に戻り、係止
段部12cを包むようにして係合し、容易には外れないよ
うになる。Incidentally, the claw portion 22 in the third and fourth embodiments.
a and 26a are the first drive transmission gear 19 and the second drive transmission gear
When molding 20, make sure that the claws 22
The a and 26a are made to have elasticity, and the claw portions 22a and 26a are attached to the outer flange 12
When it is inserted in the direction of the locking step portion 12c of a, the claw portions 22a and 26a bend outward and return to the original state at the locking step portion 12c portion, and the locking step portion 12c is wrapped and engaged, so that it is easy. Will not come off.
【００２７】このように第３，４実施形態においても、
組立時には、上述したスラスト方向とラジアル方向との
規制によって、予め所定の位置に設置した状態に保持し
ておくことができるので、脱落することがない状態にて
組立が容易に行える。また支持軸13，15を取り外ずして
も、上述したスラスト方向とラジアル方向との規制によ
って脱落することがなく、分解および支持軸の再取り付
け作業が簡単に行える。さらに、第３，４実施形態で
は、爪部22a，26aを設けたことによってより確実に脱落
防止がなされることになり、支持軸再取り付け等の作業
が簡単になる。Thus, also in the third and fourth embodiments,
At the time of assembling, it can be held in a predetermined position in advance by the above-mentioned regulation in the thrust direction and the radial direction, so that the assembly can be easily performed in a state where it does not fall off. Further, even if the support shafts 13 and 15 are not removed, the support shafts 13 and 15 do not fall off due to the regulation in the thrust direction and the radial direction, and the disassembling work and the reattachment work of the support shafts can be easily performed. Further, in the third and fourth embodiments, the provision of the claw portions 22a and 26a makes it possible to more reliably prevent the fallout, and the work of reattaching the support shaft and the like becomes simple.
【００２８】[0028]
【発明の効果】以上説明したように、本発明の用紙搬送
装置は、各請求項に記載した構成によれば、用紙を搬送
するローラ類へ駆動力を伝達する歯車に対して、簡単な
構成によってスラスト方向およびラジアル方向の動きを
規制することができ、歯車の位置決めがなされるため、
歯車およびその関連部材の組立，分解，分解後の再組み
付けの際に、歯車が不用意に脱落してしまうことを防止
できる等、その作業性が向上する。As described above, according to the structure of each of the claims, the paper conveying apparatus of the present invention has a simple structure with respect to the gears for transmitting the driving force to the rollers for conveying the paper. The thrust and radial movements can be regulated by and the gears are positioned by
The workability is improved by preventing the gear from accidentally falling off during assembly, disassembly, and reassembly after disassembly of the gear and its related members.
【図１】本発明の用紙搬送装置の第１実施形態である原
稿搬送／読取装置の構成を示す平面断面図である。FIG. 1 is a cross-sectional plan view showing a configuration of a document feeding / reading device which is a first embodiment of a sheet feeding device of the present invention.
【図２】本発明の用紙搬送装置の第１実施形態の正面断
面図である。FIG. 2 is a front cross-sectional view of the first embodiment of the sheet transport device of the present invention.
【図３】本発明の用紙搬送装置の第１実施形態の斜視図
である。FIG. 3 is a perspective view of a first exemplary embodiment of a sheet conveying device of the present invention.
【図４】本発明の用紙搬送装置の第１実施形態の要部の
拡大断面図である。FIG. 4 is an enlarged cross-sectional view of the essential parts of the first embodiment of the sheet transporting device of the present invention.
【図５】本発明の第２実施形態の要部の拡大断面図であ
る。FIG. 5 is an enlarged cross-sectional view of the essential parts of the second embodiment of the present invention.
【図６】本発明の第３実施形態の要部の断面図である。FIG. 6 is a sectional view of an essential part of a third embodiment of the present invention.
【図７】本発明の第３実施形態の要部の拡大断面図であ
る。FIG. 7 is an enlarged cross-sectional view of the essential parts of the third embodiment of the present invention.
【図８】本発明の第４実施形態の要部の拡大断面図であ
る。FIG. 8 is an enlarged cross-sectional view of the essential parts of the fourth embodiment of the present invention.
３…原稿分離搬送ローラ、 ７…スキャナローラ、 ８
…搬送ローラ、 10…側板、 12…軸受、 12a…外側
フランジ、 12c…係止段部、 13，14，15…支持軸、
16…駆動モータ、 17…出力歯車、 18…減速用歯
車、 18a…大径歯車部、 18b…小径歯車部、 18c…
支軸、 19，20，21…駆動伝達歯車、 21a…拡径部、
22…リブ、 22a，26a…爪部、 23，26…凹部、 25
…Ｅ字状の係止リング。3 ... Original separating / conveying roller, 7 ... Scanner roller, 8
… Conveying rollers, 10… Side plates, 12… Bearings, 12a… Outside flanges, 12c… Lock steps, 13, 14, 15… Support shafts,
16 ... Drive motor, 17 ... Output gear, 18 ... Reduction gear, 18a ... Large diameter gear section, 18b ... Small diameter gear section, 18c ...
Support shaft, 19, 20, 21 ... Drive transmission gear, 21a ... Expanded portion,
22 ... Ribs, 22a, 26a ... Claws, 23, 26 ... Recesses, 25
... E-shaped locking ring.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｈ０４Ｎ 1/00 １０８ Ｈ０４Ｎ 1/00 １０８Ｑ ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI H04N 1/00 108 H04N 1/00 108Q
Claims (6)
送を行うローラを配置し、このローラの支持軸の両端を
前記各側板にそれぞれ軸受を介して保持し、前記支持軸
の端部に駆動伝達歯車を固定し、この駆動伝達歯車に回
転力を伝達するため減速用歯車を噛合させてなる用紙搬
送装置において、前記駆動伝達歯車を前記軸受の外側フ
ランジと前記減速用歯車に設けた大径部の内側との間に
介在させ、さらに前記駆動伝達歯車に内径が前記外側フ
ランジの外径より僅かに大きい係合部を同心円状に形成
し、この係合部を前記外側フランジに嵌合させたことを
特徴とする用紙搬送装置。1. A roller for transporting a sheet is arranged between side plates installed opposite to each other, and both ends of a support shaft of the roller are held by the side plates via bearings, respectively, and the end of the support shaft is held. In a sheet conveying device in which a drive transmission gear is fixed to a portion and a reduction gear is meshed to transmit a rotational force to the drive transmission gear, the drive transmission gear is provided on the outer flange of the bearing and the reduction gear. And an engaging portion concentrically formed on the drive transmission gear, the inner diameter of which is slightly larger than the outer diameter of the outer flange, and the engaging portion is formed on the outer flange. A paper conveyance device characterized by being fitted together.
送を行うローラを配置し、このローラの支持軸の両端を
前記各側板にそれぞれ軸受を介して保持し、前記支持軸
の端部に駆動伝達歯車を固定し、この駆動伝達歯車に回
転力を伝達するため減速用歯車を噛合させてなる用紙搬
送装置において、前記駆動伝達歯車に内径が前記軸受の
外側フランジの径より僅かに大きい係合部を同心円状に
形成し、しかもこの係合部を前記外側フランジに嵌合さ
せた際に、前記外側フランジに設けられた係止段部と係
合する爪部を前記係合部に設けたことを特徴とする用紙
搬送装置。2. A roller for carrying a sheet is disposed between side plates installed opposite to each other, and both ends of a support shaft of the roller are held by the side plates through bearings, respectively, and the end of the support shaft is held. In a sheet conveying device in which a drive transmission gear is fixed to a portion and a reduction gear is meshed to transmit a rotational force to the drive transmission gear, the drive transmission gear has an inner diameter of the outer flange of the bearing. An engaging portion slightly larger than the diameter is formed concentrically, and when the engaging portion is fitted to the outer flange, a claw portion that engages with a locking step portion provided on the outer flange is formed. A sheet conveying device provided in the engaging portion.
ラであることを特徴とする請求項１または２記載の用紙
搬送装置。3. The sheet conveying apparatus according to claim 1, wherein the roller is a roller for separating and conveying a document.
るローラであることを特徴とする請求項１または２記載
の用紙搬送装置。4. The sheet conveying apparatus according to claim 1, wherein the roller is a roller that conveys a document to a document reading unit.
状に形成したリブであることを特徴とする請求項１また
は２記載の用紙搬送装置。5. The sheet conveying apparatus according to claim 1, wherein the engagement portion is a rib formed concentrically on the drive transmission gear.
状に形成した凹部であることを特徴とする請求項１また
は２記載の用紙搬送装置。6. The sheet conveying apparatus according to claim 1, wherein the engagement portion is a concentric recess formed in the drive transmission gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23134795A JP3484676B2 (en) | 1995-09-08 | 1995-09-08 | Paper transport device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23134795A JP3484676B2 (en) | 1995-09-08 | 1995-09-08 | Paper transport device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0977293A JPH0977293A (en) | 1997-03-25 |
| JP3484676B2 true JP3484676B2 (en) | 2004-01-06 |
Family
ID=16922211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23134795A Expired - Fee Related JP3484676B2 (en) | 1995-09-08 | 1995-09-08 | Paper transport device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3484676B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4612172B2 (en) * | 2000-11-08 | 2011-01-12 | ニスカ株式会社 | Automatic document feeder |
-
1995
- 1995-09-08 JP JP23134795A patent/JP3484676B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0977293A (en) | 1997-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3484676B2 (en) | Paper transport device | |
| US6778796B2 (en) | Driving mechanism for use in image forming apparatus | |
| JP7389962B2 (en) | Drive device and image forming device | |
| JPH09127749A (en) | Driving mechanism for image forming device | |
| JP2002372069A (en) | Torque limiter, and paper separating mechanism for image forming device | |
| JPH11227963A (en) | Image forming device | |
| JPH11133767A (en) | Roller member and image forming device | |
| JP3513303B2 (en) | Rotating member, process cartridge, and image forming apparatus | |
| EP1223475B1 (en) | Driving force transmitting apparatus and image formation apparatus having the same | |
| JP2677780B2 (en) | Conveyor rollers for facsimile machines | |
| JP3451227B2 (en) | Image forming device | |
| JP3283707B2 (en) | Transfer belt device | |
| JP3315528B2 (en) | Document feeder in image forming apparatus | |
| US20060001210A1 (en) | Automatic document feeder having a replaceable friction roller assembly | |
| JP2007302379A (en) | Image forming device | |
| US6188858B1 (en) | Roller driving apparatus of printer | |
| JPH05183691A (en) | Original picture reader and picture information processing unit with the same reader mounted thereon | |
| JP2002070981A (en) | Torque transmission device and sheet conveyance device equipped with the device and image forming device | |
| US20230236541A1 (en) | Drive transmission device, drive unit, and image forming apparatus | |
| JP2001082587A (en) | Driving device and image forming device | |
| JP2021095931A (en) | Bearing member, carrying device and image formation device | |
| JP3700366B2 (en) | Image forming apparatus | |
| JPH1077129A (en) | Paper feeder | |
| JPH07232838A (en) | Sheet carrier device and image forming device | |
| JP3715717B2 (en) | Drive transmission device and sheet material feeding device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071024 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081024 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081024 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091024 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101024 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111024 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121024 Year of fee payment: 9 |
|
| LAPS | Cancellation because of no payment of annual fees |