JP2883836B2 - Media transport device - Google Patents
Media transport deviceInfo
- Publication number
- JP2883836B2 JP2883836B2 JP17597095A JP17597095A JP2883836B2 JP 2883836 B2 JP2883836 B2 JP 2883836B2 JP 17597095 A JP17597095 A JP 17597095A JP 17597095 A JP17597095 A JP 17597095A JP 2883836 B2 JP2883836 B2 JP 2883836B2
- Authority
- JP
- Japan
- Prior art keywords
- transport
- roller shaft
- side plate
- path side
- medium
- 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)
- Handling Of Cut Paper (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、媒体を搬送ローラ
を駆動して搬送する媒体搬送装置に関する。[0001] 1. Field of the Invention [0002] The present invention relates to a medium transport device that transports a medium by driving a transport roller.
【０００２】[0002]
【従来の技術】この種の媒体搬送装置は、例えば通帳へ
の所定情報の読取りや書込み等を行う業務処理装置の通
帳搬送部やプリンタの用紙搬送部に備えられる。このよ
うな媒体搬送装置は、図２ないし図４に示すように、外
側フレーム１の内側に搬送ユニット２を取付けて構成さ
れる搬送路上部３と、この搬送路上部３の下方に一定の
隙間をおいて対向した搬送路下部４とから構成される。
この搬送路上部３及び搬送路下部４との間で搬送路を構
成し、この隙間に媒体が、図３に示す実線矢印方向に挿
入され、搬送される。2. Description of the Related Art This type of medium transport device is provided, for example, in a passbook transport unit of a business processing device for reading or writing predetermined information to a passbook or a paper transport unit of a printer. As shown in FIGS. 2 to 4, such a medium transport device includes a transport path upper portion 3 configured by attaching a transport unit 2 inside an outer frame 1, and a fixed gap below the transport path upper portion 3. And the lower part 4 of the conveyance path which is opposed.
A transport path is formed between the transport path upper part 3 and the transport path lower part 4, and the medium is inserted into this gap in the direction of the solid arrow shown in FIG. 3 and transported.
【０００３】搬送路上部３の外側フレーム１は、側面部
を構成する互いに対向した一対の外側板体５，６にステ
イシャフト７，８を水平に架設して構成されている。ス
テイシャフト７，８は、搬送ユニット２の側面部を構成
する搬送路側部板体９，１０を貫通して取付けられてい
る。[0003] The outer frame 1 of the upper portion 3 of the transport path is configured by horizontally extending stay shafts 7 and 8 on a pair of outer plates 5 and 6 facing each other forming side surfaces. The stay shafts 7, 8 are attached so as to penetrate through the transport path side plate bodies 9, 10 constituting the side surface of the transport unit 2.
【０００４】この搬送ユニット２の一方の搬送路側部板
体９には、外側フレーム１に対する搬送ユニット２の幅
方向の位置決めを行うためのサブフレームシャフト１
１，１２が搬送路側部板体９の外面から延長して設けら
れている。そして、このサブフレームシャフト１１，１
２の先端部は外側フレーム１の一方の外側板体５に取付
けられている。A sub-frame shaft 1 for positioning the transport unit 2 in the width direction with respect to the outer frame 1 is provided on one transport path side plate 9 of the transport unit 2.
Reference numerals 1 and 12 are provided to extend from the outer surface of the transport path side plate 9. Then, the sub-frame shafts 11, 1
2 is attached to one outer plate 5 of the outer frame 1.
【０００５】搬送ユニット２の搬送路側部板体９，１０
には、４つの搬送ローラ軸１３，１４，１５，１６が所
定の間隔をあけて搬送路に沿って架設されている。これ
ら搬送ローラ軸１３〜１６には、それぞれ一対の搬送ロ
ーラ１７，１８，１９，２０が搬送路側部板体９，１０
よりに取付けられている。これら搬送ローラ１７，１
８，１９，２０は、それぞれ搬送路下部４に設けられた
ピンチローラに対向している。これら搬送ローラとピン
チローラとは、互いに当接する方向に一定の押圧力を保
持するように付勢されている。上記媒体はこれらローラ
間に挟持され、ローラの回転により搬送される。The transport path side plates 9 and 10 of the transport unit 2
, Four transport roller shafts 13, 14, 15, 16 are provided along the transport path at predetermined intervals. A pair of transport rollers 17, 18, 19, and 20 are provided on the transport roller shafts 13 to 16, respectively.
More installed. These transport rollers 17, 1
Reference numerals 8, 19, and 20 respectively face pinch rollers provided in the lower portion 4 of the transport path. The transport roller and the pinch roller are urged to maintain a constant pressing force in a direction in which they contact each other. The medium is sandwiched between these rollers and transported by the rotation of the rollers.
【０００６】また、上記搬送ローラ軸１３，１４の間に
は、タイミングベルト２１が張設されている。搬送ユニ
ット２の他方の搬送路側部板体１０には、このタイミン
グベルト２１に当接して張力を持たせ、円滑に駆動させ
るためのプーリ２２が取付けられている。上記搬送ロー
ラ軸１５，１６の間にも、同様にタイミングベルト２３
が張設されている。そして、搬送ユニット２の他方の搬
送路側部板体１０には、このタイミングベルト２３に当
接するプーリ２４が取付けられている。A timing belt 21 is stretched between the transport roller shafts 13 and 14. A pulley 22 is attached to the other transport path side plate body 10 of the transport unit 2 so that the pulley 22 is brought into contact with the timing belt 21 to give tension and to smoothly drive the pulley 22. Similarly, the timing belt 23 is provided between the transport roller shafts 15 and 16.
Is stretched. A pulley 24 abutting on the timing belt 23 is attached to the other transport path side plate 10 of the transport unit 2.
【０００７】また、上記搬送ローラ軸１４，１５はそれ
ぞれ一方の搬送路側部板体９を貫通し、搬送路側部板体
９の外面から軸受３０，３１を介して少し延長してい
る。これらの延長部にはタイミングベルト２５が張設さ
れている。そして、搬送ユニット２の一方の搬送路側部
板体９には、このタイミングベルト２５に当接するプー
リ２６が取付けられている。The transport roller shafts 14 and 15 respectively penetrate one of the transport path side plate bodies 9 and slightly extend from the outer surface of the transport path side plate body 9 via bearings 30 and 31. A timing belt 25 is stretched over these extensions. A pulley 26 that abuts on the timing belt 25 is attached to one of the transport path side plate bodies 9 of the transport unit 2.
【０００８】このように搬送ローラ軸１３〜１６にタイ
ミングベルト２１，２３，２５を張設することにより、
１つの搬送ローラ軸１６が駆動すれば、その駆動力は他
の搬送ローラ軸１３〜１５に伝達される。なお、上記搬
送ユニット２の搬送路側部板体９，１０はユニット用ス
テイシャフト２７，２８，２９で幅方向に所定の間隔を
開けて位置決めされた状態で固定されている。By stretching the timing belts 21, 23, 25 on the transport roller shafts 13 to 16 as described above,
When one transport roller shaft 16 is driven, the driving force is transmitted to the other transport roller shafts 13 to 15. The transport path side plates 9 and 10 of the transport unit 2 are fixed by unit stay shafts 27, 28 and 29 in a state where they are positioned at predetermined intervals in the width direction.
【０００９】ところで、搬送ローラ軸１６は、具体的に
は図４に示すように、その一端が搬送ユニット２の他方
の搬送路側部板体１０に軸受３３で支持されており、他
端は搬送ユニット２の搬送路側部板体９を遊びを設けた
状態で貫通し、搬送路側部板体９の側面から外側へ延長
している。そして、この延長部１６ａの先端部は、外側
フレーム１の一方の外側板体５に軸受３４で支持されて
いる。As shown in FIG. 4, one end of the transport roller shaft 16 is supported by a bearing 33 on the other transport path side plate 10 of the transport unit 2, and the other end is transported. It penetrates the transport path side plate 9 of the unit 2 with play provided, and extends outward from the side surface of the transport path side plate 9. The distal end of the extension 16 a is supported by the bearing 34 on one outer plate 5 of the outer frame 1.
【００１０】上記搬送ローラ軸１６の延長部１６ａの先
端部には、外側板体５よりも内側に各搬送ローラへの駆
動力を伝達させるためのギア３５が取付けられている。
このギア３５には駆動プーリギア３６が噛合っている。
この駆動プーリギア３６には、搬送モータ（図示しな
い）からの駆動力が駆動ベルト３７を介して伝達される
ようになっている。A gear 35 for transmitting a driving force to each of the transport rollers is mounted inside the outer plate 5 at an end of the extension 16a of the transport roller shaft 16.
A drive pulley gear 36 meshes with the gear 35.
A driving force from a transport motor (not shown) is transmitted to the driving pulley gear 36 via a driving belt 37.
【００１１】すなわち、搬送モータが駆動すると、駆動
ベルト３７を介して駆動プーリギア３６が駆動し、搬送
ローラ軸１６が駆動する。これにより、他の搬送ローラ
軸１３〜１５が連動して、各搬送ローラ１７〜２０は駆
動するようになる。That is, when the transport motor is driven, the drive pulley gear 36 is driven via the drive belt 37, and the transport roller shaft 16 is driven. As a result, the other transport roller shafts 13 to 15 are linked, and the respective transport rollers 17 to 20 are driven.
【００１２】このように、搬送ローラ軸１６を搬送ユニ
ット２の他方の搬送路側部板体１０及び外側フレーム１
の一方の外側板体５だけで支持（２点支持）するように
していたのは、以下のような理由からである。すなわ
ち、仮にこの搬送ローラ軸１６を搬送路側部板体９にも
支持させて３点支持とすれば、これら３点の通し孔の位
置を正確に合わせることは困難であり、ある程度の組立
て誤差が生じる。As described above, the transport roller shaft 16 is connected to the other transport path side plate 10 of the transport unit 2 and the outer frame 1.
The support (two-point support) is made only by one of the outer plates 5 for the following reason. That is, if the transport roller shaft 16 is also supported by the transport path side plate 9 to support three points, it is difficult to accurately adjust the positions of the three through holes, and a certain amount of assembly error may occur. Occurs.
【００１３】このため、搬送ローラ軸１６には組立によ
る応力が生じ、回転に無理がかかったり、回転が重くな
る等の欠点が生じる。従って、従来は、これを防ぐため
に搬送ローラ軸１６を２点で支持していた。For this reason, stress is generated in the transport roller shaft 16 due to assembly, and disadvantages such as excessive rotation and heavy rotation occur. Therefore, conventionally, the transport roller shaft 16 is supported at two points to prevent this.
【００１４】このように搬送ローラ軸１６を２点支持す
るものとして、上述した媒体搬送装置の他に、図５に示
すようなものもある。すなわち、この場合の搬送ローラ
軸１６は、搬送ユニット２の両方の搬送路側部板体９，
１０にそれぞれ軸受３３，４１で支持することにより２
点で支持し、かつ延長部の先端を自由端とする。そし
て、この自由端にギア３５を取付けて構成される。As shown in FIG. 5, there is another type of supporting the transport roller shaft 16 at two points in addition to the above-described medium transport device. In other words, the transport roller shaft 16 in this case is connected to both the transport path side plate members 9 of the transport unit 2,
10 supported by bearings 33 and 41, respectively.
At the point and the free end is the tip of the extension. A gear 35 is attached to this free end.
【００１５】[0015]
【発明が解決しようとする課題】しかし、図４に示すよ
うな媒体搬送装置においては、搬送ローラ軸１６が搬送
ユニット２の他方の搬送路側部板体１０及び外側フレー
ム１の一方の外側板体５だけで支持（２点支持）されて
おり、中間部の搬送ユニット２の搬送路側部板体９では
支持されていないため、搬送時に各搬送ローラを回転駆
動すれば、搬送ローラ軸１６に撓みが生じてしまう。However, in the medium transport device as shown in FIG. 4, the transport roller shaft 16 is provided with the other transport path side plate 10 of the transport unit 2 and one outer plate of the outer frame 1. 5 (not supported at two points) and not supported by the transport path side plate 9 of the transport unit 2 in the intermediate portion. Will occur.
【００１６】具体的には、この搬送ローラ軸１６を両端
支持梁と考えた場合、軸と直角方向に力がかかっていな
ければ、その撓みが最も大きくなるのは中間部である
が、この中間部近傍に搬送ローラ２０があるため、回転
すればこの部分で軸と直角方向にさらに力が加わるた
め、搬送ローラ軸１６の撓みは搬送ローラ２０の近傍で
大きくなる。また、搬送ローラ２０に力が加わったとき
やタイミングベルト２３の張力によっても、搬送ローラ
軸１６の撓みが生じる。このため、搬送ローラ２０の搬
送媒体への押圧力を一定に保持することができず、精度
の良い搬送を行うことができないという問題があった。More specifically, when the conveying roller shaft 16 is considered as a support beam at both ends, the bending is greatest at the intermediate portion unless a force is applied in a direction perpendicular to the shaft. Since the conveying roller 20 is located near the portion, if the roller is rotated, a force is further applied in a direction perpendicular to the axis at this portion, so that the bending of the conveying roller shaft 16 increases near the conveying roller 20. Further, when a force is applied to the transport roller 20 or the tension of the timing belt 23, the transport roller shaft 16 is bent. For this reason, the pressing force of the transport roller 20 on the transport medium cannot be kept constant, and there has been a problem that accurate transport cannot be performed.
【００１７】また、図５に示すような媒体搬送装置にお
いては、搬送ローラ軸１６が搬送ユニット２の両方の搬
送路側部板体９，１０にそれぞれ軸受３３，４１で支持
されるため、支持点近傍の搬送ローラ２０では撓みが生
じ難く、図４に示すような媒体搬送装置の問題は生じな
い。ところが、搬送ローラ軸１６の延長部の先端を自由
端とするため、この搬送ローラ軸１６を搬送ユニット２
の搬送路側部板体９に一端を固定された一端固定支持梁
と考えれば、搬送ローラ軸１６の延長部１６ａすなわち
梁の長さが長いと、回転したときに自由端で大きく撓む
ことになる。In the medium transport device shown in FIG. 5, the transport roller shaft 16 is supported by both the transport path side plates 9 and 10 of the transport unit 2 by bearings 33 and 41, respectively. The transport roller 20 in the vicinity is unlikely to be bent, and the problem of the medium transport device as shown in FIG. 4 does not occur. However, in order to make the distal end of the extension of the transport roller shaft 16 a free end, the transport roller shaft 16 is connected to the transport unit 2.
Considering the one end fixed support beam having one end fixed to the conveyance path side plate body 9, if the extension 16 a of the conveyance roller shaft 16, that is, the length of the beam is long, it is largely bent at the free end when rotated. Become.
【００１８】さらに、この自由端にはギア３５が取付け
られているため、駆動ベルト３７の張力等により力が加
わることによってさらに撓みが大きくなる。このため、
搬送ローラ軸１６へ精度よく駆動力を伝達することがで
きないという問題があった。Further, since the gear 35 is attached to the free end, the bending is further increased when a force is applied by the tension of the drive belt 37 or the like. For this reason,
There is a problem that the driving force cannot be transmitted to the transport roller shaft 16 with high accuracy.
【００１９】そこで、本発明は、撓みを許容できる部分
に可撓小径部を設けることにより、搬送ローラ軸を３点
で支持しても回転を滑らかにすることができ、しかも動
力の伝達や搬送の精度を向上することができる媒体搬送
装置を提供しようとするものである。Therefore, according to the present invention, by providing a flexible small-diameter portion at a portion where bending can be allowed, rotation can be made smooth even if the transport roller shaft is supported at three points, and power transmission and transport can be performed. It is an object of the present invention to provide a medium transport device capable of improving the precision of the medium.
【００２０】[0020]
【課題を解決するための手段】請求項１記載の本発明
は、対向した一対の搬送路側部板体の間に搬送ローラを
設けた複数の搬送ローラ軸を並べて掛渡した状態で各搬
送路側部板体に回転自在に軸支し、搬送ローラを回転さ
せて媒体を一方向に搬送する搬送路を構成してなる媒体
搬送装置において、搬送路側部板体の外側に対向して外
側板体を設け、搬送ローラ軸のうちの少なくとも１つ
は、搬送路側部板体から外側板体へ向けてその軸を延長
して動力伝達の授受を行う延長ローラ軸とし、この延長
ローラ軸の延長端部を外側板体で回転自在に支持し、そ
の延長ローラ軸の搬送路側部板体と外側板体との間に、
この延長ローラ軸の軸径より小さい可撓小径部を形成し
たものである。According to the first aspect of the present invention, a plurality of transport roller shafts each having a transport roller provided between a pair of opposed transport path side plate members are arranged side by side on each transport path. In a medium transport apparatus rotatably supported by a part plate body and forming a transport path for transporting a medium in one direction by rotating a transport roller, an outer plate body opposing the outer side of the transport path side plate body. And at least one of the transport roller shafts is an extended roller shaft that extends and extends the shaft from the transport path side plate to the outer plate to transmit and receive power transmission, and an extended end of the extended roller shaft. The part is rotatably supported by the outer plate, and between the outer plate and the transport path side plate of the extended roller shaft.
A flexible small diameter portion smaller than the shaft diameter of the extension roller shaft is formed.
【００２１】請求項２記載の本発明は、延長ローラ軸
は、その延長部の外側板体近傍に動力伝達体を設けると
ともに、この動力伝達体から離間し、かつ搬送路側部板
体近傍に可撓小径部を形成した請求項１記載の媒体搬送
装置。According to a second aspect of the present invention, in the extension roller shaft, a power transmission body is provided near the outer plate body of the extension portion, and the extension roller shaft is separated from the power transmission body and is disposed near the conveyance path side plate body. The medium transport device according to claim 1, wherein the flexible small diameter portion is formed.
【００２２】請求項１記載の本発明においては、各搬送
路側部板体及び外側板体に支持された搬送ローラ軸に対
して動力伝達を行い回転駆動させると、搬送ローラ軸は
撓むが、その撓みは可撓小径部に集中し、可撓小径部以
外の部分はほとんど撓むことはない。このため、搬送ロ
ーラ軸の搬送ローラが取付けられた搬送路側部板体間の
撓みや、動力伝達が行われる部分の撓みも抑制される。According to the first aspect of the present invention, when the power is transmitted to the transport roller shafts supported by the respective transport path side plate members and the outer plate members and driven to rotate, the transport roller shafts are bent. The bending concentrates on the flexible small-diameter portion, and portions other than the flexible small-diameter portion hardly bend. For this reason, the bending between the transport path side plate bodies to which the transport roller of the transport roller shaft is attached and the flexure of the portion where power is transmitted are also suppressed.
【００２３】請求項２記載の本発明においては、可撓小
径部が動力伝達体から離間しており、しかも動力伝達体
は外側板体近傍に取付けられているため、可撓小径部で
撓みが生じても、動力伝達体に影響することはほとんど
なく、動力伝達体による動力伝達が滑らかに行われる。According to the second aspect of the present invention, the flexible small-diameter portion is separated from the power transmission body, and the power transmission body is mounted near the outer plate, so that the flexible small-diameter portion is not bent. Even if it occurs, the power transmission is hardly affected, and the power transmission by the power transmission is performed smoothly.
【００２４】[0024]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照して説明する。なお、本実施の形態において図４
に示す部分と同一部分については、同一符号を付して詳
細な説明を省略する。Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, FIG.
The same parts as those shown in FIG.
【００２５】図１は、本実施の形態における上部搬送部
の搬送ローラ軸１６近傍の構成を示す上面図で、図４と
異なるのは、搬送ローラ軸１６を搬送ユニット２の両方
の搬送路側部板体９，１０にそれぞれ軸受３３，４１で
支持するとともに、搬送ローラ軸１６の延長部１６ａの
先端部を外側フレーム１の一方の外側板体５に軸受３４
で支持する点、及び延長部１６ａの一部（撓みを許容で
きる部分）に搬送ローラ軸１６の軸径より小さい可撓小
径部４２が形成されている点である。FIG. 1 is a top view showing the configuration near the transport roller shaft 16 of the upper transport section in the present embodiment. The difference from FIG. 4 is that the transport roller shaft 16 is connected to both transport path sides of the transport unit 2. Each of the plate members 9 and 10 is supported by bearings 33 and 41, respectively, and the distal end of the extension 16a of the transport roller shaft 16 is mounted on one outer plate member 5 of the outer frame 1 by a bearing 34.
And that a small-diameter flexible portion 42 smaller than the shaft diameter of the transport roller shaft 16 is formed in a part of the extension portion 16a (a portion where bending can be allowed).
【００２６】具体的には、この可撓小径部４２は、搬送
ユニット２の一方の搬送路側部板体９と外側フレーム１
の一方の外側板体５との間に形成すればよいが、搬送ロ
ーラ軸１６の延長部１６ａの先端部に搬送モータからの
駆動力を伝達するためのギア３５が取付けられているこ
とから、駆動力の伝達の精度を良くするため、ギア３５
からなるべく離間した方が好ましい。More specifically, the flexible small-diameter portion 42 is provided between the transport unit side plate 9 of the transport unit 2 and the outer frame 1.
However, since a gear 35 for transmitting the driving force from the transport motor is attached to the tip of the extension 16a of the transport roller shaft 16, In order to improve the accuracy of transmission of the driving force, the gear 35
It is preferable to be as far away as possible.
【００２７】すなわち、可撓小径部４２を形成する位置
として最も好ましいのは、搬送ユニット２の一方の搬送
路側部板体９と外側フレーム１の一方の外側板体５との
間であって、その搬送路側部板体９の外側近傍である。That is, the most preferable position for forming the flexible small-diameter portion 42 is between one of the transport path side plate members 9 of the transport unit 2 and one of the outer plate members 5 of the outer frame 1. It is near the outside of the transport path side plate 9.
【００２８】ところで、搬送ローラ軸１６の撓みが一定
の場合、この撓みを生じさせる軸に直角方向の力とこの
軸の断面２次モーメントＩは比例する。また、断面２次
モーメントＩは円周率をπ、軸径をｄとすると、（１）
式のように表せる。 Ｉ＝πｄ4 ／６４ …（１） 従って、搬送ローラ軸１６にかかる力は、搬送ローラ軸
１６の軸径ｄの４乗に比例する。When the deflection of the transport roller shaft 16 is constant, the force perpendicular to the axis causing the deflection is proportional to the second moment of area I of the axis. Also, assuming that the circular moment of inertia I is pi and the shaft diameter is d, (1)
It can be expressed like an expression. I = πd 4/64 ... ( 1) Consequently, the force exerted on the conveying roller shaft 16 is proportional to the fourth power of the shaft diameter d of the conveyance roller shaft 16.
【００２９】これにより、例えば１００％の力をかける
ことにより生じる撓みは、搬送ローラ軸１６の軸径ｄを
７０％にすれば、略２４％の力がかかれば生じることと
なる。同様にして、１００％の力をかけることにより生
じる撓みは、搬送ローラ軸１６の軸径ｄを６０％にすれ
ば、略１３％の力がかかれば生じることになる。このよ
うに、軸径ｄが小さいほうが撓み易くなることから明ら
かなように、可撓小径部４２は他の部分に比して非常に
撓み易くなる。As a result, for example, if the shaft diameter d of the transport roller shaft 16 is set to 70%, the bending caused by applying a force of 100% occurs when approximately 24% of the force is applied. Similarly, the bending caused by applying a force of 100% occurs when the shaft diameter d of the transport roller shaft 16 is set to 60% and a force of approximately 13% is applied. As is apparent from the above, the smaller the shaft diameter d is, the more easily the flexible small-diameter portion 42 bends compared to other portions.
【００３０】このような構成の本実施の形態において
は、例えば搬送ユニット２の両方の搬送路側部板体９，
１０、及び外側フレーム１の一方の外側板体５に形成す
る軸受孔が微小にずれた状態で搬送ローラ軸１６が支持
されている場合でも、可撓小径部４２で撓みが生じる。
これにより、回転駆動しても可撓小径部４２以外の部分
では撓みをほとんど生じなくさせることができる。In the present embodiment having such a configuration, for example, both the transport path side plate members 9 of the transport unit 2,
Even when the transport roller shaft 16 is supported in a state where the bearing holes formed in the outer plate body 10 and the one outer plate body 5 of the outer frame 1 are slightly shifted, the flexible small diameter portion bends.
This makes it possible to cause almost no bending in portions other than the flexible small-diameter portion 42 even when driven to rotate.
【００３１】すなわち、搬送ユニット２の両方の搬送路
側部板体９，１０の間には、ほとんど撓みは生じないた
め、搬送ローラ２０による搬送媒体への押圧力を一定に
保持することができ、精度の良い搬送を行うことができ
る。That is, since there is almost no bending between the two conveying path side plates 9 and 10 of the conveying unit 2, the pressing force of the conveying roller 20 against the conveying medium can be kept constant. Accurate conveyance can be performed.
【００３２】しかも、搬送ローラ軸１６へ搬送モータの
駆動力を伝達するギア３５は、外側フレーム１の一方の
外側板体５の近傍に取付けられているため、駆動ベルト
の張力等が生じていても、このギア３５近傍の撓みは、
ほとんど生じることはない。これにより、搬送ローラ軸
１６へ精度よく駆動力を伝達することができる。Further, since the gear 35 for transmitting the driving force of the transport motor to the transport roller shaft 16 is mounted near one of the outer plates 5 of the outer frame 1, tension of the drive belt is generated. The deflection near the gear 35 is
It rarely occurs. As a result, the driving force can be accurately transmitted to the transport roller shaft 16.
【００３３】さらに、軸受孔が微小にずれた状態で搬送
ローラ軸１６が支持されていても、可撓小径部４２で撓
みが生じるため、搬送ローラ軸１６を回転したときに、
可撓小径部４２を形成しないで３点支持する場合に生じ
る回転の無理や回転に荷重がかかる等の欠点が生じるこ
とはなく、滑らかに回転させることができる。Further, even if the transport roller shaft 16 is supported with the bearing holes slightly displaced, the flexible small diameter portion 42 bends, so that when the transport roller shaft 16 is rotated,
There is no disadvantage such as excessive rotation or a load applied to the rotation that occurs when the three-point support is performed without forming the flexible small diameter portion 42, and the rotation can be performed smoothly.
【００３４】なお、本実施の形態においては、可撓小径
部４２を形成する延長ローラ軸として搬送ローラ軸１６
を例に挙げて述べたが、必ずしもこれに限定されるもの
ではなく、３点で支持するような駆動軸であれば、他の
駆動軸に適用してもよい。また、この場合に延長ローラ
軸に取付けるギアは、搬送ローラ軸１６から受けた動力
を他の搬送ローラ軸や他の機構部へ伝達させるものであ
ってもよい。In this embodiment, the transport roller shaft 16 is used as an extension roller shaft for forming the flexible small-diameter portion 42.
However, the present invention is not necessarily limited to this, and may be applied to other drive shafts as long as the drive shaft is supported at three points. In this case, the gear attached to the extension roller shaft may transmit the power received from the conveyance roller shaft 16 to another conveyance roller shaft or another mechanism.
【００３５】[0035]
【発明の効果】以上詳述したように本発明によれば、撓
みを許容できる部分に可撓小径部を設けることにより、
搬送ローラ軸を３点で支持しても回転を滑らかにするこ
とができ、しかも動力の伝達や搬送の精度を向上するこ
とができる媒体搬送装置を提供できるものである。As described above in detail, according to the present invention, by providing a flexible small-diameter portion at a portion where bending can be permitted,
It is an object of the present invention to provide a medium transport apparatus that can smoothly rotate even if the transport roller shaft is supported at three points, and can improve power transmission and transport accuracy.
【図１】本発明の実施の形態の外観構成を示す部分上面
図。FIG. 1 is a partial top view showing an external configuration of an embodiment of the present invention.
【図２】従来の媒体搬送装置の上部搬送部の外観構成を
示す組立斜視図。FIG. 2 is an assembled perspective view showing an external configuration of an upper transport section of a conventional medium transport apparatus.
【図３】従来の媒体搬送装置の構成を説明する図。FIG. 3 is a diagram illustrating a configuration of a conventional medium transport device.
【図４】図２に示す媒体搬送装置の上面図。FIG. 4 is a top view of the medium transport device shown in FIG.
【図５】従来の媒体搬送装置の構成を説明する図。FIG. 5 is a diagram illustrating a configuration of a conventional medium transport device.
５…外側板体 ９，１０…搬送路側部板体 １５…搬送ローラ軸 １６…搬送ローラ軸（延長ローラ軸） １６ａ…延長部 １９，２０…搬送ローラ ３５…動力伝達体 ４２…可撓小径部 5: Outer plate 9, 10: Conveyor path side plate 15: Conveyor roller shaft 16: Conveyor roller shaft (extended roller shaft) 16a: Extended portion 19, 20: Conveyor roller 35: Power transmitting member 42: Flexible small diameter portion
───────────────────────────────────────────────────── フロントページの続き (72)発明者 杉崎 芳晃 静岡県田方郡大仁町大仁570番地 株式 会社テック大仁工場内 (72)発明者 寺見 雅和 東京都港区虎ノ門１丁目７番12号 沖電 気工業株式会社内 (72)発明者 武川 達也 神奈川県横浜市港北区綱島東四丁目３番 １号 松下通信工業株式会社内 (72)発明者 高橋 芳男 岩手県花巻市城内４番３号 株式会社新 興製作所内 (58)調査した分野(Int.Cl.6，ＤＢ名) B65H 5/06 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Yoshiaki Sugizaki 570, Ohi, Oni-cho, Tata-gun, Shizuoka Prefecture Inside the Tech Ohi Plant (72) Inventor Masakazu Terami 1-7-12 Toranomon, Minato-ku, Tokyo Offshore Inside Electric Industries Co., Ltd. (72) Inventor Tatsuya Takegawa 3-1, Tsunashima Higashi, 4-chome, Kohoku-ku, Yokohama, Kanagawa Prefecture Inside Matsushita Communication Industrial Co., Ltd. (72) Yoshio Takahashi 4-3, Jonai, Hanamaki-shi, Iwate Stock (58) Field surveyed (Int.Cl. 6 , DB name) B65H 5/06
Claims (2)
送ローラを設けた複数の搬送ローラ軸を並べて掛渡した
状態で各搬送路側部板体に回転自在に軸支し、前記搬送
ローラを回転させて媒体を一方向に搬送する搬送路を構
成してなる媒体搬送装置において、前記搬送路側部板体
の外側に対向して外側板体を設け、前記搬送ローラ軸の
うちの少なくとも１つは、前記搬送路側部板体から前記
外側板体へ向けてその軸を延長して動力伝達の授受を行
う延長ローラ軸とし、この延長ローラ軸の延長端部を前
記外側板体で回転自在に支持し、その延長ローラ軸の前
記搬送路側部板体と前記外側板体との間に、この延長ロ
ーラ軸の軸径より小さい可撓小径部を形成したことを特
徴とする媒体搬送装置。A plurality of transport roller shafts each having a transport roller provided between a pair of opposed transport path side plate bodies, the transport roller shafts being rotatably supported on the respective transport path side plate bodies in a state where the plurality of transport roller shafts are arranged and bridged; In a medium transport device that constitutes a transport path that transports a medium in one direction by rotating a roller, an outer plate is provided facing the outside of the transport path side plate, and at least one of the transport roller shafts is provided. One is an extension roller shaft that extends and extends its axis from the conveyance path side plate to the outer plate to transmit and receive power transmission, and the extended end of the extension roller shaft is rotated by the outer plate. A medium transporting device which is freely supported and has a flexible small-diameter portion smaller than the axis diameter of the extension roller shaft between the transport path side plate and the outer plate of the extension roller shaft. .
外側板体近傍に動力伝達体を設けるとともに、この動力
伝達体から離間し、かつ前記搬送路側部板体近傍に可撓
小径部を形成したことを特徴とする請求項１記載の媒体
搬送装置。2. The extension roller shaft has a power transmission body provided in the vicinity of the outer plate body at an extension thereof, and a flexible small-diameter portion spaced apart from the power transmission body and near the conveyance path side plate body. The medium transport device according to claim 1, wherein the medium transport device is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17597095A JP2883836B2 (en) | 1995-07-12 | 1995-07-12 | Media transport device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17597095A JP2883836B2 (en) | 1995-07-12 | 1995-07-12 | Media transport device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0925020A JPH0925020A (en) | 1997-01-28 |
| JP2883836B2 true JP2883836B2 (en) | 1999-04-19 |
Family
ID=16005437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17597095A Expired - Fee Related JP2883836B2 (en) | 1995-07-12 | 1995-07-12 | Media transport device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2883836B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4853478B2 (en) * | 2008-01-29 | 2012-01-11 | ブラザー工業株式会社 | Image forming apparatus and duplex printing unit |
-
1995
- 1995-07-12 JP JP17597095A patent/JP2883836B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0925020A (en) | 1997-01-28 |
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