JPH06199432A - Paper feeding roller - Google Patents
Paper feeding rollerInfo
- Publication number
- JPH06199432A JPH06199432A JP5001173A JP117393A JPH06199432A JP H06199432 A JPH06199432 A JP H06199432A JP 5001173 A JP5001173 A JP 5001173A JP 117393 A JP117393 A JP 117393A JP H06199432 A JPH06199432 A JP H06199432A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- shaft
- rubber belt
- paper feed
- feed roller
- 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.)
- Granted
Links
- 241001272720 Medialuna californiensis Species 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 abstract description 10
- 238000003780 insertion Methods 0.000 description 7
- 230000037431 insertion Effects 0.000 description 7
- 238000007689 inspection Methods 0.000 description 1
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、給紙コロ、詳しく
は、画像形成装置等の給紙機構に用いられている給紙コ
ロに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feed roller, and more particularly to a paper feed roller used in a paper feed mechanism of an image forming apparatus or the like.
【０００２】[0002]
【従来の技術】一般に、画像形成装置等の給紙機構に
は、用紙に摩擦コロ等を圧接することにより用紙を捌
く、いわゆる摩擦コロ方式を採用している。この摩擦コ
ロの代表的なものを図４に示す。図４を参照してこの給
紙コロＡは、給紙コロＡを駆動する軸１０と一体回転す
るコロ本体２０に、無端リング状のゴムベルト３０が固
定されている。2. Description of the Related Art Generally, a paper feed mechanism of an image forming apparatus or the like employs a so-called friction roller system in which a paper is separated by pressing a friction roller or the like against the paper. A typical example of this friction roller is shown in FIG. Referring to FIG. 4, the paper feed roller A has an endless ring-shaped rubber belt 30 fixed to a roller body 20 that rotates integrally with a shaft 10 that drives the paper feed roller A.
【０００３】コロ本体２０は、上記軸１０が挿入される
軸挿入部１０ａと、この軸挿入部１０ａの両端に一体に
形成された円筒状のゴムベルト取付部１０ｂとを有して
いる。そして、ゴムベルト３０は、上記ゴムベルト取付
部１０ｂの側面１０ｃに圧入されて固定されている。上
記ゴムベルト３０は用紙Ｐに当接されており、上記軸１
０が回転すれば、ゴムベルト３０と用紙Ｐとの摩擦力に
より、用紙Ｐが上記ゴムベルト３０の回転方向へ送られ
るものである。The roller body 20 has a shaft inserting portion 10a into which the shaft 10 is inserted, and a cylindrical rubber belt attaching portion 10b integrally formed at both ends of the shaft inserting portion 10a. The rubber belt 30 is press-fitted and fixed to the side surface 10c of the rubber belt mounting portion 10b. The rubber belt 30 is in contact with the paper P, and the shaft 1
When 0 rotates, the paper P is fed in the rotation direction of the rubber belt 30 by the frictional force between the rubber belt 30 and the paper P.
【０００４】[0004]
【発明が解決しようとする課題】しかし、従来の給紙コ
ロでは、給紙コロのメンテナンス時に不都合がある。例
えば、上記ゴムベルト３０が摩耗した場合には交換が必
要であるが、上記給紙コロＡの構成では、ゴムベルト３
０は無端のリング状であり、軸１０がこのリング内に位
置しているため、ゴムベルト３０の交換作業において
は、当該給紙コロＡが使用されている画像形成装置等の
機械本体に支持されている軸１０を取外してから、さら
に、給紙コロＡを引き抜かなければゴムベルト３０を取
り外すことができない。しかも、上記給紙コロＡにおい
ては、ゴムベルト３０がコロ本体２０に圧入固定されて
いるので、給紙コロＡ全体を交換しなければならない。
従って、給紙コロのメンテナンス時に手間がかかると共
に、維持コストが高くつくと言う問題がある。However, the conventional paper feed roller has a problem during maintenance of the paper feed roller. For example, when the rubber belt 30 is worn, it needs to be replaced, but in the configuration of the paper feed roller A, the rubber belt 3 is used.
0 is an endless ring shape, and since the shaft 10 is located in this ring, in the replacement work of the rubber belt 30, the paper feed roller A is supported by a machine body such as an image forming apparatus in which it is used. The rubber belt 30 cannot be removed unless the paper feed roller A is further pulled out after removing the shaft 10 that is attached. Moreover, in the paper feed roller A, since the rubber belt 30 is press-fitted and fixed to the roller main body 20, the entire paper feed roller A must be replaced.
Therefore, there is a problem that the maintenance of the paper feed roller is troublesome and the maintenance cost is high.
【０００５】そこで、この発明の目的は、メンテナンス
時に手間がかからず、維持コストが安価な給紙コロを提
供することである。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a paper feed roller which requires less labor during maintenance and has a low maintenance cost.
【０００６】[0006]
【課題を解決するための手段】請求項１に係る給紙コロ
は、用紙に当接されるゴム製ベルトを有し、軸と一体回
転される断面略半月形形状の給紙コロにおいて、上記ベ
ルトを無端ループ状のものにより構成し、当該ベルト
を、ループの外に上記軸が位置する状態で着脱自在に取
付けるベルト取付部を設けたことを特徴とするものであ
る。According to a first aspect of the present invention, there is provided a paper feed roller having a rubber belt which is in contact with a paper sheet and which has a substantially half-moon shape in cross section and is integrally rotated with a shaft. It is characterized in that the belt is configured by an endless loop, and a belt attaching portion for attaching the belt detachably with the shaft positioned outside the loop is provided.
【０００７】また、請求項２に係る給紙コロは、用紙に
当接されるゴム製ベルトを有し、軸と一体回転される断
面略半月形形状の給紙コロにおいて、上記ベルトを有端
状のものにより構成し、当該ベルトの両端部を着脱自在
に取付けるベルト取付部を設けたことを特徴とするもの
である。Further, according to a second aspect of the present invention, there is provided a paper feed roller having a rubber belt which is brought into contact with the paper, and which has a substantially half-moon shape in section and is integrally rotated with a shaft. It is characterized in that it is configured by a belt-shaped member, and is provided with a belt attaching portion for detachably attaching both end portions of the belt.
【０００８】[0008]
【作用】請求項１に係る給紙コロによれば、無端ループ
状のベルトの当該ループの外に軸が位置するようにベル
ト取付部が設けられているので、軸を取外すことなくベ
ルトを外すことができる。また、請求項２に係る給紙コ
ロによれば、ベルトが有端であり、その両端部をベルト
取付部に取付けたので、軸を取外すことなく上記両端部
をベルト取付部から外すだけで、ベルトを外すことがで
きる。According to the paper feeding roller of the first aspect, since the belt mounting portion is provided so that the shaft is located outside the loop of the endless loop belt, the belt can be removed without removing the shaft. be able to. Further, according to the sheet feeding roller of the second aspect, the belt has the ends and both ends thereof are attached to the belt mounting portion. Therefore, it is possible to remove the both ends from the belt mounting portion without removing the shaft. The belt can be removed.
【０００９】[0009]
【実施例】以下実施例を示す添付図面によって詳細に説
明する。図２はこの発明の一実施例の、給紙コロＢが駆
動軸Ｓに取付けられている状態を示している。また図３
は、給紙コロＢのＩ−Ｉ断面図であり、さらに図１は、
給紙コロＢの分解斜視図である。Embodiments will be described in detail below with reference to the accompanying drawings showing embodiments. FIG. 2 shows a state in which the paper feed roller B is attached to the drive shaft S according to the embodiment of the present invention. See also FIG.
Is a sectional view of the paper feed roller B taken along line I-I, and FIG.
6 is an exploded perspective view of the paper feed roller B. FIG.
【００１０】図１乃至図３を参照して、この給紙コロＢ
は、軸Ｓによって駆動されるコロ本体１に、無端ループ
状のゴムベルト２が巻かれた状態で取付けられて構成さ
れており、その形状は、断面略半月形形状である。この
本体１に巻き付けられたゴムベルト２の表面は、給紙コ
ロＢが軸Ｓによって駆動されることにより用紙Ｐに当接
して用紙Ｐを送る作用面となる。Referring to FIGS. 1 to 3, the paper feed roller B
Is configured such that an endless loop rubber belt 2 is attached to a roller body 1 driven by a shaft S in a wound state, and its shape is a substantially half-moon shape in cross section. The surface of the rubber belt 2 wound around the main body 1 serves as an action surface that feeds the paper P by abutting the paper P when the paper feed roller B is driven by the shaft S.
【００１１】コロ本体１は、基部１２と、この基部１２
に一体に形成されている上記軸Ｓが挿入される軸挿通部
１１と、上記基部１２の軸方向の両端面に一体に形成さ
れている一対の対向するゴムベルト取付板１３，１４と
を有してなる。上記基部１２は、巻付けられたゴムベル
ト２の表面に上記作用面を形成させる円弧状面１２ａ
と、この円弧状面１２ａに連続する平面部１２ｂとを有
する略扇形形状をしている。また、上記軸挿通部１１
は、断面円形のパイプ形形状をしており、上記基部１２
の軸方向に沿って形成されている。この軸挿通部１１の
中心は、上記円弧状面１２ａの曲率中心と一致してい
る。さらに、上記ゴムベルト取付板１３，１４は、半円
形形状であって、その所定位置には、ベルト取付部とし
ての係合溝１３ｃ，１４ｃがそれぞれ一対設けられてい
る。これら係合溝１３ｃ，１４ｃに後述するベルト固定
部材２２が係合するものである。また、一対の係合溝１
３ｃは、上記軸挿通部１１を挟んで当該軸挿通部１１の
両側に位置するように設けられており、一方の係合溝１
４ｃについても同様である。The roller body 1 includes a base 12 and the base 12
Has a shaft insertion portion 11 into which the shaft S is inserted, and a pair of opposing rubber belt mounting plates 13 and 14 integrally formed on both axial end surfaces of the base portion 12. It becomes. The base portion 12 has an arcuate surface 12a that forms the working surface on the surface of the wound rubber belt 2.
And a flat surface portion 12b continuous with the arcuate surface 12a, and has a substantially fan shape. In addition, the shaft insertion portion 11
Has a pipe-like shape with a circular cross section,
Is formed along the axial direction of. The center of the shaft insertion portion 11 coincides with the center of curvature of the arcuate surface 12a. Further, the rubber belt mounting plates 13 and 14 have a semicircular shape, and a pair of engaging grooves 13c and 14c as belt mounting portions are provided at predetermined positions thereof. A belt fixing member 22 described later is engaged with these engaging grooves 13c and 14c. In addition, the pair of engagement grooves 1
3 c are provided so as to be located on both sides of the shaft insertion portion 11 with the shaft insertion portion 11 interposed therebetween, and the one engagement groove 1 is provided.
The same applies to 4c.
【００１２】ゴムベルト２のループの内部には、上記係
合溝１３ｃ，１４ｃと係合する一対のベルト固定部材２
２が通される。このベルト固定部材２２は、上記一対の
対向するゴムベルト取付板１３，１４の間隔に対応した
長さと、上記係合溝１３ｃ，１４ｃの幅に係合可能な軸
径を有する棒状部材であって、その両端には円形の鍔２
２ａが一体に形成されている。Inside the loop of the rubber belt 2, a pair of belt fixing members 2 that engage with the engaging grooves 13c and 14c.
2 is passed. The belt fixing member 22 is a bar-shaped member having a length corresponding to the distance between the pair of rubber belt mounting plates 13 and 14 facing each other and a shaft diameter that can be engaged with the width of the engaging grooves 13c and 14c. Round collars 2 on both ends
2a is integrally formed.
【００１３】次に、上記ゴムベルト２のコロ本体１への
取付けを説明する。一対のベルト固定部材２２をゴムベ
ルト２の内部に通す。この状態でゴムベルト２をコロ本
体１の円弧状面１２ａに沿って巻き付けるようにあてが
い、上記一対のベルト固定部材２２をコロ本体１の係合
溝１３ｃ，１４ｃにそれぞれ係合させる。Next, the attachment of the rubber belt 2 to the roller body 1 will be described. The pair of belt fixing members 22 are passed inside the rubber belt 2. In this state, the rubber belt 2 is applied so as to be wound around the arcuate surface 12a of the roller body 1, and the pair of belt fixing members 22 are engaged with the engagement grooves 13c and 14c of the roller body 1, respectively.
【００１４】この実施例によれば、上記ベルト固定部材
２２が上記軸挿通部１１の両側に位置するように設けら
れている係合溝１３ｃ，１４ｃに係合するので、ゴムベ
ルト２は、ループの外に軸Ｓが位置するようにコロ本体
１に簡単に取付けられる。従って、ゴムベルト２を交
換，点検等する場合に、軸Ｓを取外すことなく、上記ベ
ルト固定部材２２を係合溝１３ｃ，１４ｃから外すだけ
で簡単にゴムベルト２を取外すことができる。According to this embodiment, since the belt fixing member 22 engages with the engaging grooves 13c and 14c provided on both sides of the shaft insertion portion 11, the rubber belt 2 is formed into a loop. It is easily attached to the roller body 1 so that the shaft S is located outside. Therefore, when replacing or inspecting the rubber belt 2, the rubber belt 2 can be easily removed by removing the belt fixing member 22 from the engaging grooves 13c and 14c without removing the shaft S.
【００１５】また、図５は、ゴムベルト５のコロ本体６
への取付けにおける別実施例を示す分解斜視図である。
本実施例の特徴は、ゴムベルト５を有端状のものにより
構成し、このゴムベルト５の両端部を、コロ本体６に形
成された丸棒状のベルト取付部６２に係合させて取付け
たことである。Further, FIG. 5 shows the roller body 6 of the rubber belt 5.
FIG. 9 is an exploded perspective view showing another embodiment of attachment to the device.
The feature of this embodiment is that the rubber belt 5 is constituted by an end-shaped one, and both ends of the rubber belt 5 are engaged with and attached to a round bar-shaped belt attachment portion 62 formed on the roller body 6. is there.
【００１６】図５を参照して、ゴムベルト５は、有端の
帯状であって、その両端部には筒状の係合筒５１，５２
が一体に形成されている。コロ本体６について、上記一
実施例で示したコロ本体１と構成の異なる点は、上記一
実施例では、基部１２の軸方向の両端面に一対のゴムベ
ルト取付板１３，１４を一体に形成したが、本実施例で
は、基部１２の軸方向の一端面のみにゴムベルト取付板
１４を一体に形成し、このゴムベルト取付板１４の内側
の面６３にベルト取付部としての丸棒状のベルト係合片
６２を一体に形成している点である。なお、本実施例の
場合も、ゴムベルト５の両端部は軸Ｓの両側に位置して
いる。Referring to FIG. 5, the rubber belt 5 is in the form of an endless belt, and both ends of the rubber belt 5 are cylindrical engaging cylinders 51 and 52.
Are integrally formed. The roller main body 6 is different from the roller main body 1 shown in the above-described embodiment in the configuration. In the above-mentioned embodiment, a pair of rubber belt mounting plates 13 and 14 are integrally formed on both axial end surfaces of the base portion 12. However, in this embodiment, the rubber belt mounting plate 14 is integrally formed only on one axial end surface of the base portion 12, and the inner surface 63 of the rubber belt mounting plate 14 has a round bar-shaped belt engaging piece as a belt mounting portion. The point is that 62 is integrally formed. Also in the case of this embodiment, both ends of the rubber belt 5 are located on both sides of the shaft S.
【００１７】本実施例によれば、ゴムベルト５は、有端
状のものであり、その両端は、給紙コロの軸Ｓの両側に
位置するので、給紙コロの軸方向にコロ本体６のベルト
係合片６２をゴムベルト５の係合筒５１，５２に挿入さ
せるだけで、または、抜くだけでゴムベルト５を簡単に
脱着することができる。従って、上記一実施例で示した
と同様の効果、すなわち、ゴムベルト５を交換，点検等
する場合に、軸Ｓを取外すことなく、簡単にベルトを取
外すことができる。なお、この発明は上記実施例に限定
されるものではなく、コロ本体１，６は、一体成形する
他に、基部１２や軸挿通部１１等を別部材として組み立
てても良い。また、ゴムベルトのコロ本体への取付け
は、コロ本体に針状の引っ掛け部材を形成し、この引っ
掛け部材にゴムベルトを引っ掛ける方法を採っても良
い。According to the present embodiment, the rubber belt 5 has an end shape, and both ends thereof are located on both sides of the axis S of the paper feed roller, so that the roller main body 6 extends in the axial direction of the paper feed roller. The rubber belt 5 can be easily attached and detached only by inserting the belt engagement piece 62 into the engagement cylinders 51 and 52 of the rubber belt 5 or by pulling it out. Therefore, the same effect as that shown in the above-described embodiment, that is, when replacing or inspecting the rubber belt 5, the belt can be easily removed without removing the shaft S. The present invention is not limited to the above-described embodiment, and the roller bodies 1 and 6 may be integrally molded, or may be assembled with the base portion 12, the shaft insertion portion 11 and the like as separate members. The rubber belt may be attached to the roller body by forming a needle-shaped hooking member on the roller body and hooking the rubber belt on the hooking member.
【００１８】その他、この発明の要旨を変更しない範囲
で種々の設計変更を施すことができる。In addition, various design changes can be made within the scope of the present invention.
【００１９】[0019]
【発明の効果】この発明によれば、画像形成装置等の機
械本体に支持されている軸を取外すことなく給紙コロの
ベルトを外すことができるので、当該ベルトの交換，点
検等のメンテナンスの際に手間がかからず、維持コスト
が安価な給紙コロを提供することができる。According to the present invention, the belt of the paper feed roller can be removed without removing the shaft supported by the main body of the machine such as the image forming apparatus. Therefore, maintenance such as replacement and inspection of the belt can be performed. In this case, it is possible to provide a paper feed roller that does not require any trouble and has low maintenance cost.
【００２０】また、請求項２に係る給紙コロによれば、
ベルトが有端であり、その両端部をベルト取付部に取付
けたので、軸を取外すことなく上記両端部をベルト取付
部から外すだけで、ベルトを外すことができる。According to the paper feed roller of the second aspect,
Since the belt has an end and both ends thereof are attached to the belt attaching portion, the belt can be detached only by removing the both ends from the belt attaching portion without removing the shaft.
【図１】本発明の一実施例の給紙コロの分解斜視図であ
る。FIG. 1 is an exploded perspective view of a sheet feeding roller according to an embodiment of the present invention.
【図２】給紙コロが用紙に当接している状態を示す概略
図である。FIG. 2 is a schematic view showing a state where a paper feed roller is in contact with a paper.
【図３】給紙コロの断面図である。FIG. 3 is a sectional view of a paper feed roller.
【図４】従来の給紙コロが用紙を送る状態を示す概略図
である。FIG. 4 is a schematic view showing a state in which a conventional paper feed roller feeds a paper.
【図５】本発明の別実施例の給紙コロの分解斜視図であ
る。FIG. 5 is an exploded perspective view of a sheet feeding roller according to another embodiment of the present invention.
Ｂ 給紙コロ Ｓ 軸 Ｐ 用紙 ２ ゴムベルト １３ｃ 係合溝（ベルト取付部） １４ｃ 係合溝（ベルト取付部） ５ ゴムベルト ６２ ベルト係合片（ベルト取付部） B Paper feed roller S Axis P Paper 2 Rubber belt 13c Engagement groove (belt attachment part) 14c Engagement groove (belt attachment part) 5 Rubber belt 62 Belt engagement piece (belt attachment part)
Claims (2)
と一体回転される断面略半月形形状の給紙コロにおい
て、 上記ベルトを無端ループ状のものにより構成し、 当該ベルトを、ループの外に上記軸が位置する状態で着
脱自在に取付けるベルト取付部を設けたことを特徴とす
る給紙コロ。1. A paper feed roller having a rubber belt that is in contact with a paper and having a substantially half-moon shape in cross section, which rotates integrally with a shaft, wherein the belt is formed by an endless loop. A sheet feeding roller provided with a belt attaching portion detachably attached to the outside of the loop with the shaft positioned.
と一体回転される断面略半月形形状の給紙コロにおい
て、 上記ベルトを有端状のものにより構成し、 当該ベルトの両端部を着脱自在に取付けるベルト取付部
を設けたことを特徴とする給紙コロ。2. A paper feeding roller having a rubber belt that abuts against a paper and having a substantially half-moon shape in cross section, which is integrally rotated with a shaft. A paper feed roller characterized by having a belt attachment portion for detachably attaching both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00117393A JP3327605B2 (en) | 1993-01-07 | 1993-01-07 | Feed roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00117393A JP3327605B2 (en) | 1993-01-07 | 1993-01-07 | Feed roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06199432A true JPH06199432A (en) | 1994-07-19 |
| JP3327605B2 JP3327605B2 (en) | 2002-09-24 |
Family
ID=11494049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00117393A Expired - Fee Related JP3327605B2 (en) | 1993-01-07 | 1993-01-07 | Feed roller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3327605B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992056A (en) * | 2011-09-14 | 2013-03-27 | 住友橡胶工业株式会社 | Sheet feed roller |
| US8511672B2 (en) * | 2011-08-22 | 2013-08-20 | Canon Kabushiki Kaisha | Sheet feeding apparatus and image forming apparatus |
-
1993
- 1993-01-07 JP JP00117393A patent/JP3327605B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8511672B2 (en) * | 2011-08-22 | 2013-08-20 | Canon Kabushiki Kaisha | Sheet feeding apparatus and image forming apparatus |
| CN102992056A (en) * | 2011-09-14 | 2013-03-27 | 住友橡胶工业株式会社 | Sheet feed roller |
| JP2013060288A (en) * | 2011-09-14 | 2013-04-04 | Sumitomo Rubber Ind Ltd | Paper feeding roller |
| US8746679B2 (en) * | 2011-09-14 | 2014-06-10 | Sumitomo Rubber Industries, Ltd. | Sheet feed roller |
| CN102992056B (en) * | 2011-09-14 | 2016-05-18 | 住友橡胶工业株式会社 | Paper feed roller |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3327605B2 (en) | 2002-09-24 |
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