JPH0373723A - Paper feeding structure - Google Patents

Paper feeding structure

Info

Publication number
JPH0373723A
JPH0373723A JP1205141A JP20514189A JPH0373723A JP H0373723 A JPH0373723 A JP H0373723A JP 1205141 A JP1205141 A JP 1205141A JP 20514189 A JP20514189 A JP 20514189A JP H0373723 A JPH0373723 A JP H0373723A
Authority
JP
Japan
Prior art keywords
shaft
paper feeding
edge
rotating shaft
paper feed
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
JP1205141A
Other languages
Japanese (ja)
Inventor
Shoichi Kitagawa
生一 北川
Ichiro Takahashi
一郎 高橋
Munetaka Kousai
向西 宗孝
Takashi Nagashima
高志 永島
Masayoshi Okada
岡田 正芳
Masaaki Toyoda
豊田 将哲
Toshiyuki Nakamura
敏之 中村
Naoki Nakajima
直樹 中島
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.)
Kyocera Mita Industrial Co Ltd
Original Assignee
Mita Industrial 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 Mita Industrial Co Ltd filed Critical Mita Industrial Co Ltd
Priority to JP1205141A priority Critical patent/JPH0373723A/en
Publication of JPH0373723A publication Critical patent/JPH0373723A/en
Pending legal-status Critical Current

Links

Landscapes

  • Paper Feeding For Electrophotography (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

PURPOSE:To improve the replacement work performance of a paper feeding roller by arranging an auxiliary shaft whose one edge is opposed, keeping a prescribed interval, onto one edge of a rotary shaft, on an extension line in the longitudinal direction of the rotary shaft and connecting one edge of the rotary shaft with one edge of the auxiliary shaft and arranging the paper feeding roller which revolves together with the rotary shaft in connection state. CONSTITUTION:A paper feeding roller 4 is installed so as to connect one edge of a rotary shaft 1 with one edge of an auxiliary shaft 3. When the paper feeding roller 4 is replaced, the paper feeding rooler 4 is demounted from one edge of the rotary shaft 1 and from one edge of the auxiliary shaft 3. Therefore, the need of demounting the rotary shaft 1 and the auxiliary shaft 3 from a holding member such as side plate, etc., is obviated, and the replacement working performance can be improved.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 この発明は、複写機やプリンタ等における給紙構造に関
するものであり、特に、給紙ローラ部の改良に関するも
のである。
DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a paper feeding structure in a copying machine, a printer, etc., and particularly relates to an improvement in a paper feeding roller section.

〈従来の技術〉 従来より複写機やプリンタ等の給紙構造には給紙ローラ
が採用されている。従来の給紙ローラは、■ 回転軸と
一体的になっているもの、■ 特開昭61−17833
4号公報に開示されているような回転軸から給紙ローラ
が取外し可能になっているもの、 ■ 第2図に示すような片側のみで支持された回転軸に
給紙ローラが着脱自在に取付けられているもの、 等があった。
<Prior Art> Conventionally, paper feed rollers have been employed in the paper feed structures of copiers, printers, and the like. Conventional paper feed rollers are: ■ one that is integrated with the rotating shaft;
The paper feed roller is removable from the rotating shaft as disclosed in Publication No. 4, ■ The paper feeding roller is removably attached to the rotating shaft supported on only one side as shown in Figure 2. There were things that were given, etc.

〈発明が解決しようとする課題〉 給紙ローラは、その周面がゴム等の摩擦係数の大きな材
質で形成されていて、用紙との間で生じる摩擦力によっ
て用紙を送るものである。よって、使用に伴ない給紙ロ
ーラ周面は摩耗する。
<Problems to be Solved by the Invention> The paper feed roller has its peripheral surface made of a material with a large friction coefficient, such as rubber, and feeds the paper by the frictional force generated between it and the paper. Therefore, the peripheral surface of the paper feed roller wears out with use.

このため、給紙ローラは比較的交換頻度の高い部品とな
っており、交換作業性がよくなければならない。
For this reason, the paper feed roller is a component that is replaced relatively frequently, and must be easy to replace.

上述の給紙ローラでは、■のように給紙ローラが回転軸
と一体的になっているものに比べて、■や■のように回
転軸から給紙ローラが取外し可能なものの方が交換作業
性がよい。
Regarding the paper feed rollers mentioned above, it is easier to replace the paper feed rollers that can be removed from the rotation shaft as shown in ■ and ■, compared to the paper feed rollers that are integrated with the rotation shaft as shown in ■. Good sex.

ところが、■の構造では、回転軸の軸長が、回転軸を支
持する側板の間隔とほぼ一致したものになっているため
・給紙ローラを回転軸から取外すには、回転軸の少なく
とも一端を側板からはずし他端側を側板からずらさなけ
ればならず、交換作業性があまりよくない。また、取外
す際に、ずらした回転軸が他部品と接触したりすること
のないように注意しなければならないとう欠点もあった
However, in the structure (■), the axial length of the rotating shaft is almost the same as the spacing between the side plates that support the rotating shaft, so in order to remove the paper feed roller from the rotating shaft, at least one end of the rotating shaft must be It is necessary to remove it from the side plate and then move the other end side from the side plate, so the replacement work is not very easy. Another drawback is that when removing it, care must be taken to ensure that the shifted rotating shaft does not come into contact with other parts.

一方、■の構造では、ガイド板の撓みゃ取付状態の具合
が給紙ローラの給紙性能を左右する。よって、安定して
用紙を供給しなければならない給紙構造としては、不安
定要素を抱えていることになり、好ましくない。また、
回転軸を保持するための強度設計において、剛性向上を
図ろうとすると、スペース的な制約が加わるという欠点
もある。
On the other hand, in the structure (2), the deflection and mounting state of the guide plate affect the paper feeding performance of the paper feeding roller. Therefore, as a paper feeding structure that must stably supply paper, it has an unstable element, which is not preferable. Also,
In strength design for holding a rotating shaft, an attempt to improve rigidity also has the disadvantage of adding space constraints.

それゆえ、この発明は、従来技術の問題を解消して、交
換作業性がよくかつ安定した給紙性能が得られる給紙構
造を提供することを目的とする。
Therefore, it is an object of the present invention to provide a paper feeding structure that solves the problems of the prior art and provides good exchange workability and stable paper feeding performance.

く課題を解決するための手段〉 この発明は、駆動力が伝達されて回転される回転軸と、
回転軸の長さ方向延長線上に配置され、その一端が回転
軸の一端と所定の間隔を開けて対向している補助軸と、
回転軸の一端および補助軸の一端同士を連結し、連結状
態において回転軸と共に回転する給紙ローラとを特徴と
する給紙構造である。
Means for Solving the Problems This invention provides a rotating shaft to which driving force is transmitted and rotated;
an auxiliary shaft disposed on the longitudinal extension of the rotating shaft, one end of which faces one end of the rotating shaft with a predetermined spacing;
This paper feeding structure is characterized by a paper feeding roller that connects one end of a rotating shaft and one end of an auxiliary shaft, and rotates together with the rotating shaft in a connected state.

く作用〉 給紙ローラは、回転軸の一端および補助軸の一端同士を
連結するように装着されている。給紙ローラを交換する
場合は、回転軸の一端および補助軸の一端から、それぞ
れ、給紙ローラを取外せばよく、回転軸や補助軸を側板
等の保持部材から取外す必要はない。
Function> The paper feed roller is mounted so as to connect one end of the rotating shaft and one end of the auxiliary shaft. When replacing the paper feed roller, it is sufficient to remove the paper feed roller from one end of the rotating shaft and one end of the auxiliary shaft, respectively, and there is no need to remove the rotating shaft or the auxiliary shaft from the holding member such as the side plate.

〈実施例〉 第1図は、この発明の一実施例の構成を示す図解的な構
造図である。
<Embodiment> FIG. 1 is a schematic structural diagram showing the configuration of an embodiment of the present invention.

第1図を参照してこの実施例を説明すると、回転軸1は
、図示しない側板によって回転自在に保持されており、
図において右側部分には図示しない駆動源が連結されて
いる。そして、駆動源から伝達される駆動力によって回
転軸1は回転されるようになっている。
This embodiment will be described with reference to FIG. 1. A rotating shaft 1 is rotatably held by a side plate (not shown).
In the figure, a drive source (not shown) is connected to the right side portion. The rotating shaft 1 is rotated by the driving force transmitted from the driving source.

回転軸1の図において左端にはねじ軸2が形成されてい
る。
A screw shaft 2 is formed at the left end of the rotating shaft 1 in the drawing.

回転軸1の延長線上左側には補助軸3が配置されている
。補助軸3は回転軸1とほぼ等しい軸径をしており、そ
の左端側は図示しない側板によって回転自在に保持され
ている。補助軸3の右端には比較的軸長のあるねじ軸5
が形成されている。
An auxiliary shaft 3 is arranged on the left side of the rotation shaft 1 as an extension thereof. The auxiliary shaft 3 has approximately the same shaft diameter as the rotating shaft 1, and its left end side is rotatably held by a side plate (not shown). At the right end of the auxiliary shaft 3 is a screw shaft 5 with a relatively long shaft.
is formed.

ねじ軸5の先端面は回転軸1のねじ軸2の左端面と所定
の間隔を開けて対向している。
The tip end surface of the screw shaft 5 faces the left end surface of the screw shaft 2 of the rotary shaft 1 with a predetermined distance therebetween.

給紙ローラ4は、回転軸1のねじ軸2および補助軸3の
ねじ軸5を連結するように取付けられている。より具体
的に説明すると、給紙ローラ4は、その中心部にローラ
軸41を有しており、ローラ軸41の周面は樹脂製のロ
ーラパイプ42で覆われており、ローラパイプ42の周
面にはパイプ状のローラゴム43が貼着された構造にな
っている。
The paper feed roller 4 is attached to connect the threaded shaft 2 of the rotating shaft 1 and the threaded shaft 5 of the auxiliary shaft 3. To explain more specifically, the paper feed roller 4 has a roller shaft 41 at its center, the peripheral surface of the roller shaft 41 is covered with a roller pipe 42 made of resin, and the peripheral surface of the roller pipe 42 is covered with a roller pipe 42 made of resin. It has a structure in which a pipe-shaped roller rubber 43 is adhered to the surface.

そして、ローラ軸41の両端面から軸線に沿って内方向
へ向って、それぞれ、係合孔6および係合孔7が形成さ
れている。
Engagement holes 6 and 7 are formed from both end surfaces of the roller shaft 41 inwardly along the axis, respectively.

図においてローラ軸41の右側に形成された係合孔6は
、回転軸1めねじ軸2とねじ係合するもので、その内周
面にはねじが形成されている。この係合孔6の深さは、
ねじ軸2の軸長よりも少し深くされている。
In the figure, the engagement hole 6 formed on the right side of the roller shaft 41 is threadedly engaged with the rotating shaft 1 and the female threaded shaft 2, and a thread is formed on the inner peripheral surface thereof. The depth of this engagement hole 6 is
It is slightly deeper than the axial length of the screw shaft 2.

一方、図においてローラ軸41の左側に形成された係合
孔7は、十分に深い孔にされていて、また、この係合孔
7にはねじは形成されていない。
On the other hand, the engagement hole 7 formed on the left side of the roller shaft 41 in the figure is a sufficiently deep hole, and no screw is formed in this engagement hole 7.

回転軸1と補助軸3とが給紙ローラ4で連結された状態
において、保合孔7とねじ軸5との係合は、図示のよう
に比較的浅い状態になるようにされている。つまり、係
合孔7に十分な余裕が残るように、係合孔7は十分に深
くされている。
When the rotating shaft 1 and the auxiliary shaft 3 are connected by the paper feed roller 4, the engagement between the retaining hole 7 and the screw shaft 5 is relatively shallow as shown in the figure. In other words, the engagement hole 7 is made sufficiently deep so that a sufficient margin remains in the engagement hole 7.

なお、補助軸を図示しない保持部から簡単にずらせられ
るのであれば、係合孔7を深くする必要はないし、また
、ねじ軸5の軸径も短くてもよい。
It should be noted that if the auxiliary shaft can be easily shifted from a holding portion (not shown), the engagement hole 7 does not need to be deep, and the shaft diameter of the screw shaft 5 may also be short.

さらに、係合孔7に補助軸3のねじ軸5が挿入されたと
きに、給紙ローラ4とねじ軸5との位置関係を固定する
ための六角ナツト8が設けられている。
Further, a hexagonal nut 8 is provided for fixing the positional relationship between the paper feed roller 4 and the screw shaft 5 when the screw shaft 5 of the auxiliary shaft 3 is inserted into the engagement hole 7.

給紙ローラ4を交換する場合には、六角ナツト8を緩め
て左方へ十分に移動させ、給紙ローラ4を回転させなが
ら、ねじ軸2と係合孔6とのねじ係合を解除する。
When replacing the paper feed roller 4, loosen the hexagonal nut 8, move it sufficiently to the left, and release the threaded engagement between the screw shaft 2 and the engagement hole 6 while rotating the paper feed roller 4. .

回転軸1と給紙ローラ4とのねじ係合・を解除した後は
、補助軸3をその保持部を中心に右端部を少しねじり、
給紙ローラ4を引き抜けばよい。
After releasing the threaded engagement between the rotating shaft 1 and the paper feed roller 4, slightly twist the right end of the auxiliary shaft 3 around its holding part.
All you have to do is pull out the paper feed roller 4.

新しい給紙ローラ4を装着する場合には、上述と逆の手
順を行えばよい。給紙ローラ4が装着された状態におい
て、給紙ローラ4の係合孔6に回転軸1のねじ軸2が根
元までねじ込まれた状態を基本の位置とし、その位置で
給紙ローラ4ががたつかないように、六角ナツト8をし
っかりと締付ける。
When installing a new paper feed roller 4, the procedure described above may be reversed. With the paper feed roller 4 installed, the basic position is a state in which the threaded shaft 2 of the rotary shaft 1 is screwed into the engagement hole 6 of the paper feed roller 4 all the way to its root, and the paper feed roller 4 is in this position. Tighten the hexagonal nut 8 firmly so that it does not become loose.

なお、回転軸1が回転される際に、ねじ軸2のねじは給
紙ローラ4にねじ込まれる方向に切られているのが好ま
しい。
Note that it is preferable that the thread of the screw shaft 2 be cut in a direction such that it is screwed into the paper feed roller 4 when the rotation shaft 1 is rotated.

また、第1図において、9は、給紙ローラ4の着脱時に
回転軸1または補助軸3が回転しないようにプランジャ
等ではさみやすくした平坦部である。
Further, in FIG. 1, reference numeral 9 denotes a flat portion that can be easily held by a plunger or the like so that the rotating shaft 1 or the auxiliary shaft 3 does not rotate when the paper feed roller 4 is attached or detached.

この実施例では、係合孔7にはねじは形成せず、六角ナ
ツト8を用いて、補助軸3のねじ軸5に対して給紙ロー
ラ4の位置決をするようにしたが、保合孔7にねじを形
成し、係合孔7と補助軸3のねじ軸5とをねじ係合させ
てもよい。係る場合、回転軸1のねじ軸2と補助軸3の
ねじ軸5とは同方向にねじが切られている必要がある。
In this embodiment, no thread is formed in the engagement hole 7, and a hexagonal nut 8 is used to position the paper feed roller 4 with respect to the threaded shaft 5 of the auxiliary shaft 3. A thread may be formed in the hole 7, and the engagement hole 7 and the threaded shaft 5 of the auxiliary shaft 3 may be threadedly engaged. In this case, the threaded shaft 2 of the rotating shaft 1 and the threaded shaft 5 of the auxiliary shaft 3 must be threaded in the same direction.

また、上述の実施例においては、回転軸1と給紙ローラ
4とはねじ係合する構成にしたが、回転軸1の左端部に
スプラインまたはキー溝を形成し、給紙ローラ4と回転
軸1とをスプライン結合またはキー結合させてもよい。
Further, in the above-described embodiment, the rotary shaft 1 and the paper feed roller 4 were configured to be threadedly engaged, but a spline or a key groove is formed at the left end of the rotary shaft 1, and the paper feed roller 4 and the rotary shaft are formed with a spline or a key groove. 1 may be spline-coupled or key-coupled.

さらに、この発明においては、回転軸1と給紙ローラ4
とは一体的に回転する必要があるが、給紙ローラ4と補
助軸3との間は空回りする構造であってもよいし、給紙
ローラ4の回転に伴なって補助軸3も一緒に回転する構
造であってもよい。
Furthermore, in this invention, the rotating shaft 1 and the paper feed roller 4
The paper feed roller 4 and the auxiliary shaft 3 need to rotate together, but the structure may be such that the paper feed roller 4 and the auxiliary shaft 3 rotate idly, or as the paper feed roller 4 rotates, the auxiliary shaft 3 also rotates. It may also be a rotating structure.

〈発明の効果〉 この発明は、以上のように構成されているので、給紙ロ
ーラの交換作業性が良く、かつ給紙性能の安定した給紙
構造とすることができる。
<Effects of the Invention> Since the present invention is configured as described above, it is possible to provide a paper feeding structure with good paper feeding roller replacement workability and stable paper feeding performance.

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

第1図は、この発明の一実施例に係る給紙構造を表わす
図である。 第2図は、従来の片持ち支持給紙ローラの構造を表わす
図である。 図において、1・・・回転軸、2,5・・・ねじ軸、3
・・・補助軸、4・・・給紙ローラ、41・・・ローラ
軸、42・・−ローラリング、43・・・ローラゴム、
6,7・・・係合孔、を示す。 第1図 1:回転軸 2.5:ねじ軸 3:補助軸 4:給紙ローラ 5.6:係合孔 第2図(従来例) (ほか2名)
FIG. 1 is a diagram showing a paper feeding structure according to an embodiment of the present invention. FIG. 2 is a diagram showing the structure of a conventional cantilever supported paper feed roller. In the figure, 1... rotating shaft, 2, 5... screw shaft, 3
...Auxiliary shaft, 4...Paper feed roller, 41...Roller shaft, 42...-Roller ring, 43...Roller rubber,
6, 7... Engagement holes are shown. Fig. 1 1: Rotating shaft 2.5: Screw shaft 3: Auxiliary shaft 4: Paper feed roller 5.6: Engagement hole Fig. 2 (conventional example) (2 other people)

Claims (1)

【特許請求の範囲】 1、駆動力が伝達されて回転される回転軸と、 回転軸の長さ方向延長線上に配置され、 その一端が回転軸の一端と所定の間隔を開けて対向して
いる補助軸と、 回転軸の一端および補助軸の一端同士を連結し、連結状
態において回転軸と共に回転する給紙ローラと、 を含むことを特徴とする給紙構造。
[Scope of Claims] 1. A rotating shaft to which driving force is transmitted and rotated; and a rotating shaft disposed on the longitudinal extension of the rotating shaft, one end of which faces one end of the rotating shaft with a predetermined distance therebetween. A paper feeding structure comprising: an auxiliary shaft; and a paper feeding roller that connects one end of the rotating shaft and one end of the auxiliary shaft to each other and rotates together with the rotating shaft in the connected state.
JP1205141A 1989-08-08 1989-08-08 Paper feeding structure Pending JPH0373723A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1205141A JPH0373723A (en) 1989-08-08 1989-08-08 Paper feeding structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1205141A JPH0373723A (en) 1989-08-08 1989-08-08 Paper feeding structure

Publications (1)

Publication Number Publication Date
JPH0373723A true JPH0373723A (en) 1991-03-28

Family

ID=16502103

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1205141A Pending JPH0373723A (en) 1989-08-08 1989-08-08 Paper feeding structure

Country Status (1)

Country Link
JP (1) JPH0373723A (en)

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