JPH03266871A - Fixing device - Google Patents

Fixing device

Info

Publication number
JPH03266871A
JPH03266871A JP2066385A JP6638590A JPH03266871A JP H03266871 A JPH03266871 A JP H03266871A JP 2066385 A JP2066385 A JP 2066385A JP 6638590 A JP6638590 A JP 6638590A JP H03266871 A JPH03266871 A JP H03266871A
Authority
JP
Japan
Prior art keywords
roll
heating roller
side plate
heating
pin
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
JP2066385A
Other languages
Japanese (ja)
Inventor
Shozo Yamamoto
山本 省三
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.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox 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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP2066385A priority Critical patent/JPH03266871A/en
Publication of JPH03266871A publication Critical patent/JPH03266871A/en
Pending legal-status Critical Current

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  • Fixing For Electrophotography (AREA)
  • Paper Feeding For Electrophotography (AREA)

Abstract

PURPOSE:To attach/detach heating and pressing rolls without any tools or any cooling period by supporting both edges of the heating roll rotatably with an upper and a lower side plates which can be separated respectively and attaching a cover consisting of insulating material in its periphery. CONSTITUTION:When a frame 26 is rotated to a lower direction, a hook 25 is removed, and a link 17 is pushed to the inside while pushing a lever 18 up, the engagement of its hook part and a pin 15 of a supporting plate 8 is released and a pressing roll supporting unit is made to fall down to the lower direction with a connection member 9 as the center. Then, the state of pressurized contact of the heating roll 1 and the pressing roll 6 is released and the roll 1 can be easily extracted by putting up the upper side plate 3. Furthermore, by attaching an edge part supporting means 40 of the insulating resin on both edges of the roll 1 by inserting it to a bearing outer race 2 of the roll 1 with the elasticity of an attachment part 32, the separating operation can be carried out without waiting for the roll 1 to become a low temperature.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、定着装置、詳しくは脱着容易な定着装置に関
する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fixing device, and more particularly to a fixing device that is easily attached and detached.

〔従来の技術〕[Conventional technology]

複写機、プリンター等の定着装置は、加熱o −ラ、加
圧ローラの交換、用紙の詰まりゃ巻きつきの除去等のた
めに、しばしば脱着される。
2. Description of the Related Art Fixing devices of copying machines, printers, and the like are often removed for purposes such as replacing heating rollers and pressure rollers, and removing paper jams and curls.

しかし、従来の定着装置にあっては、例えば特開昭58
−42078号公報に示されるように、箱体内に加熱ロ
ーラを回転可能に設け、これに当接する加圧ローラを、
箱体に軸支された加圧レバーで支持する構造となってい
る。この箱体と本体との分離は容易に行えるが、加熱ロ
ーラと加圧ローラとは、その分離の際同時に加圧レバー
を回動させて両ローラの圧接を解除するだけの構成とな
っている。そのため、加熱ローラ及び加圧ローラの脱着
は、両ローラの各部の取りつけネジを外してほとんど定
着装置を解体する形でしか行うことができなかった。
However, in conventional fixing devices, for example,
As shown in Japanese Patent No. 42078, a heating roller is rotatably provided inside the box, and a pressure roller that comes into contact with the heating roller is
It is supported by a pressure lever that is pivoted on the box body. The box and main body can be easily separated, but the heating roller and pressure roller are configured so that when they are separated, the only thing to do is rotate the pressure lever at the same time to release the pressure between the two rollers. . Therefore, the heating roller and the pressure roller can only be attached and detached by removing the mounting screws of each part of both rollers and disassembling the fixing device.

特に加熱ローラは、支持側板に設けた軸受用の孔から引
き出さなければならず、脱着が非常にやりにくかった。
In particular, the heating roller had to be pulled out from a bearing hole provided in the support side plate, making it extremely difficult to attach and detach.

而も加熱ローラは200度以上の高温となるたt1温度
が低下するまで待たなければならないという不具合もあ
った。
Moreover, there was a problem in that the heating roller reached a high temperature of 200 degrees or more and had to wait until the t1 temperature decreased.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

本発明の目的は、これらの不具合を解消して、工具がな
くても、また加熱ローラの冷却期間を置かなくても、加
熱ローラ、加圧ローラを脱着できるようにすることであ
る。
An object of the present invention is to eliminate these problems and to enable the heating roller and pressure roller to be attached and detached without tools or without a cooling period for the heating roller.

〔課題を解決するた袷の手段〕[A means to solve problems]

本発明によれば、加熱ローラの両端を、それぞれ分割可
能な上側板と下側板とから成る側板の下側板上に載置し
且つ上側板を当接して回動可能に支持し、この支持され
た加熱ローラ両端部の周囲に断熱材から成るカバーを取
りつけたことを特徴とする定着装置が提供される。
According to the present invention, both ends of the heating roller are placed on the lower side plates of the side plates each consisting of an upper side plate and a lower side plate that are separable, and are rotatably supported by abutting the upper side plate. There is provided a fixing device characterized in that a cover made of a heat insulating material is attached around both ends of a heating roller.

〔実施例〕〔Example〕

本発明の定着装置の使用時における構造を第1図に示す
FIG. 1 shows the structure of the fixing device of the present invention when in use.

加熱ローラ1の両端にはベアリング2が取りつけてあり
、このベアリング2がそれぞれ上側板と下側板4の間に
挟持されている。上側板3と下側板4は、ピン5を中心
に上下に分割可能である。
Bearings 2 are attached to both ends of the heating roller 1, and the bearings 2 are sandwiched between an upper plate and a lower plate 4, respectively. The upper side plate 3 and the lower side plate 4 can be divided into upper and lower parts centering on the pin 5.

加圧ローラ6の両端にもベアリング7が取りつけてあり
、このベアリング7が支持板8のU溝りa内に載置され
ている。両側の支持板8は結合部材9.10で一体に形
成されており、加圧口〜う支持ユニットを構成している
Bearings 7 are also attached to both ends of the pressure roller 6, and these bearings 7 are placed in the U groove a of the support plate 8. The supporting plates 8 on both sides are integrally formed with connecting members 9, 10, and constitute a pressurizing port support unit.

方の結合部材9は、下側板4上に設けた支持部材11上
に載置されている。支持部材11は、下側板の一部を折
り曲げて形成したブラケット12に回動自在に取りつけ
られており、切欠部13を有する回転シャフト14によ
りその回転が規制されている。
The other coupling member 9 is placed on a support member 11 provided on the lower plate 4. The support member 11 is rotatably attached to a bracket 12 formed by bending a part of a lower plate, and its rotation is regulated by a rotating shaft 14 having a notch 13.

他方の結合部材10は単に板状のものである。The other coupling member 10 is simply plate-shaped.

加圧ローラ6を挟んで結合部材9の反対側にはピン15
が設けられており、このピン15は、加圧レバー16を
構成するリンク17のフック部と係合している。
A pin 15 is provided on the opposite side of the coupling member 9 with the pressure roller 6 in between.
is provided, and this pin 15 engages with a hook portion of a link 17 that constitutes a pressure lever 16.

加圧レバー16は、ピン16aによりリンク17に回転
可能に連結されたレバー18を有する。
The pressure lever 16 has a lever 18 rotatably connected to a link 17 by a pin 16a.

このレバー18は、ピン19により前記上側板3上に回
動可能に取りつけられ、その一端には、弓張バネ20が
取りつけられている。この引張バネ20は、支持板8の
ピン15を上方に押し上げて、加熱ローラ1に加圧ロー
ラ6を圧接するようになっている。
This lever 18 is rotatably attached to the upper plate 3 by a pin 19, and a bow tension spring 20 is attached to one end thereof. This tension spring 20 pushes up the pin 15 of the support plate 8 and presses the pressure roller 6 against the heating roller 1 .

両側の上側板3は、ステー21.22により一体にされ
ており、また両側の下側板4は、ステー23.24によ
り一体にされている。さらに、このステー23.24は
、装置本体に設けた引き出しレール(図示せず)上をス
ライドするようになっており、定着装置を装置本体から
外部に引き出せるようになっている。
The upper plates 3 on both sides are joined together by stays 21.22, and the lower plates 4 on both sides are joined together by stays 23.24. Further, the stays 23 and 24 are adapted to slide on pull-out rails (not shown) provided on the apparatus main body, so that the fixing device can be pulled out from the apparatus main body.

上側板3と下側板4とは、回動支点であるピン5の反対
側において、下側板の外側に設けたフック25により互
いに係止する。
The upper side plate 3 and the lower side plate 4 are locked to each other by a hook 25 provided on the outside of the lower side plate on the opposite side of the pin 5 which is a pivot point.

26は用紙排8手段を支持するフレームであり、この用
紙排出手段は、ガイド板27、搬送ローラ対28、加熱
ローラ1、加圧ローラ6の周面と接触する用紙剥離爪(
図示せず)を有する。この用紙排出手段は、下側板4に
ピン又は軸29により回動自在に支持されており、下方
位置に退避させることにより、定着装置の用紙排出側を
開放できるようになっている(第2図)。なお、フレー
ム26は、第1図の閉鎖位置では、ステー21にスナッ
プ止約されるようになっている。30は、下側板4に設
けた上下の人口シュート (ガイド板)である。
Reference numeral 26 denotes a frame that supports the paper ejecting means 8, and this paper ejecting means includes a paper peeling claw (
(not shown). This paper ejection means is rotatably supported by a pin or shaft 29 on the lower plate 4, and by retracting it to a lower position, the paper ejection side of the fixing device can be opened (see Fig. 2). ). The frame 26 is snap-locked to the stay 21 in the closed position shown in FIG. 30 is an upper and lower artificial chute (guide plate) provided on the lower plate 4.

第2図に示すように、フレーム26を下方に回動し、フ
ック25を外し、更にレバー18を上方に押圧しながら
、リンク17を内方に押すと、リンク17のフック部と
支持板8のピン15の係合が外れ、加圧ローラ支持ユニ
ットは、結合部材9を中心にして下方に落ち込む。この
結果、加熱ローラ1と加圧ローラ6とは、圧接状態が解
除され、離間する。なお、回転シャツ)14は圧接力を
弱とるためのものであり、上記動作に先立ち作動させれ
ば、リンク17のフック部とピン15との係合を外し易
くなる。
As shown in FIG. 2, when the frame 26 is rotated downward, the hook 25 is removed, and the link 17 is pushed inward while pressing the lever 18 upward, the hook part of the link 17 and the support plate 8 The pin 15 is disengaged, and the pressure roller support unit falls downward around the coupling member 9. As a result, the heating roller 1 and the pressure roller 6 are released from the pressed state and are separated. Note that the rotary shirt 14 is for weakening the pressing force, and if activated prior to the above operation, the hook portion of the link 17 and the pin 15 can be easily disengaged.

更に第2図に示すように、上側板3を上方に回動すれば
、加熱ローラ1も上方から容易に取り出せる。側方から
引き抜くものに比べれば、非常に取り出し易い。
Furthermore, as shown in FIG. 2, by rotating the upper plate 3 upward, the heating roller 1 can also be easily taken out from above. It's much easier to take out than pulling it out from the side.

更に本発明では、加熱ローラ1の両端に、第3図に示す
ような端部支持手段40が取りつけられている。この端
部支持手段40は、断熱性の樹脂でできており、カバ一
部分31.加熱ローラ1への取りつけ部分32、ヒータ
ー取りつけ部分33、加熱ローラ1を外して床等に置く
場合にころがりを防止する部分34、駆動ギヤ用切欠部
35及び断熱カラー36を有する。
Furthermore, in the present invention, end support means 40 as shown in FIG. 3 are attached to both ends of the heating roller 1. This end support means 40 is made of a heat insulating resin, and the cover portion 31. It has a part 32 for attaching to the heating roller 1, a part for attaching the heater 33, a part 34 for preventing rolling when the heating roller 1 is removed and placed on the floor, etc., a cutout part 35 for the drive gear, and a heat insulating collar 36.

そして、第4図のように加熱ローラ1のベアリング2の
外輪に、取りつけ部分32の弾性を利用して嵌めこまれ
る。
Then, as shown in FIG. 4, it is fitted into the outer ring of the bearing 2 of the heating roller 1 by utilizing the elasticity of the mounting portion 32.

取りつけ部分32は、実施例の場合は、周囲の2ケ所に
設けられている。これは、上側板と下側板の合せ部50
.51の空間に挿入するた於てある。また、ベアリング
2の脱落防止のために、2個の取りつけ部分32の中間
部(大きい側)に、突起32aが設けられている。
In the case of the embodiment, the mounting portions 32 are provided at two locations around the periphery. This is the joining part 50 of the upper side plate and the lower side plate.
.. It is intended to be inserted into the space of 51. Further, in order to prevent the bearing 2 from falling off, a protrusion 32a is provided at the middle portion (larger side) of the two mounting portions 32.

上記端部支持手段40は、加熱ローラ1を取り出すとき
の取手として使われるものであり、加熱ローラ1が低温
になるまで待つ必要はなく、非常に作業性を向上させる
ことができる。
The end support means 40 is used as a handle when taking out the heating roller 1, and there is no need to wait until the heating roller 1 becomes low temperature, which can greatly improve work efficiency.

更に、本発明においては、加熱ローラ1の両端を持った
とき、ベアリング2が内方向に脱落し、加熱ローラ2の
周面に損傷を与えないようになっている。
Furthermore, in the present invention, when the heating roller 1 is held by both ends, the bearing 2 will fall inward and the circumferential surface of the heating roller 2 will not be damaged.

即ち、第5図に示すように断熱カラー36の端部周囲に
は、微小な突条37(高さ0.2 mm位)が形成され
ているとともに、第6図に示すように、一部に切除部3
8 (1〜2■位)が形成されている。なお、断熱カラ
ー36は樹脂性である。
That is, as shown in FIG. 5, a minute protrusion 37 (about 0.2 mm in height) is formed around the end of the heat insulating collar 36, and as shown in FIG. Excision part 3
8 (1 to 2 ■) is formed. Note that the heat insulating collar 36 is made of resin.

ベアリング2の内輪に断熱カラー36を取りつける場合
は、断熱カラー36を押すことにより、外径を小さくし
て挿入する。この状態で断熱カラー36を加熱ローラ1
に挿入すれば、断熱カラー36は縮むことができないの
で、ベアリング1の内輪は前記突条37により脱落を阻
止される。
When attaching the heat insulating collar 36 to the inner ring of the bearing 2, the heat insulating collar 36 is pushed to reduce its outer diameter and inserted. In this state, the heat insulating collar 36 is attached to the heating roller 1.
Since the heat insulating collar 36 cannot be compressed when inserted into the bearing 1, the inner ring of the bearing 1 is prevented from falling off by the protrusion 37.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、定着装置を解体することなく、工具を
必要とすることもなく、さらに加熱ローラの冷却期間を
置くことなく、加圧ローラのみを容易に脱着できる。
According to the present invention, only the pressure roller can be easily attached and detached without disassembling the fixing device, without requiring any tools, and without requiring a cooling period for the heating roller.

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

第1図は、本発明による定着装置の正常時における構造
を示す横断面図、 第2図は、本発明による定着装置の上側板と下側板とを
分離した状態を示す横断面図、第3図は、本発明の定着
装置における加熱ローラの一端部の斜視図、 第4図は、第3図の加熱ローラの端部に取りつけられた
端部支持手段の横断面図 第5図は、第4図の端部支持手段の一部を拡大して示し
た横断面図、及び 第6図は、第5図に示した断熱カラーの右側面図である
。 1・・・・・・加熱ローラ、2.7・・・・・・ベアリ
ング、3・・・・・・上側板、4・・・・・・下側板、
5・・・・・・ピン、6・・・・・・加圧ローラ、8・
・・・・・支持板、8a・・・・・・U溝、9.10・
・・・・・結合部材、11・・・・・・支持部材、12
・・・・・・ブラケット、13・・・・・・切欠部、1
4・・・・・・シャフト、15・・・・・・ピン、16
−・・・・・加圧レバー16a・・・・・・ピン、17
・・・・・・リンク、18・・・・・・レバー19・・
・・・・ピン、20・・・・・・引張ハネ、21.22
.23.24・・・・・・ステー、25・・・・・・フ
ック、26・・・・・・用紙搬送部材、27・・・・・
・ガイド板、28・・・・・・搬送ローラ対、29・・
・・・・軸、30・・・・・・人口シュート、31・・
・・・・カバ一部分、32・・・・・・取りつけ部分。 32a・・・・・・突起、33・・・・・・ヒーター取
りっけ部分、34・・・−・・ころがりを防止する部分
、35・・・・・・駆動ギヤ用切欠部、36・・・・・
・断熱カバー37・・・・・・突条、38・・・−・・
切除部、40・・・・・・端部支持手段。 第 図 4 第 図 4
FIG. 1 is a cross-sectional view showing the structure of the fixing device according to the present invention in normal operation; FIG. 4 is a perspective view of one end of the heating roller in the fixing device of the present invention. FIG. 4 is a cross-sectional view of the end support means attached to the end of the heating roller of FIG. FIG. 4 is an enlarged cross-sectional view of a part of the end support means, and FIG. 6 is a right side view of the heat insulating collar shown in FIG. 5. 1...Heating roller, 2.7...Bearing, 3...Upper side plate, 4...Lower side plate,
5... Pin, 6... Pressure roller, 8...
...Support plate, 8a...U groove, 9.10.
...Connecting member, 11... Supporting member, 12
...Bracket, 13...Notch, 1
4...Shaft, 15...Pin, 16
-... Pressure lever 16a... Pin, 17
...Link, 18...Lever 19...
...Pin, 20...Tension spring, 21.22
.. 23.24...Stay, 25...Hook, 26...Paper conveying member, 27...
・Guide plate, 28... Conveyance roller pair, 29...
...Axis, 30...Population chute, 31...
...Part of the cover, 32...Mounting part. 32a... Protrusion, 33... Heater mounting portion, 34... Rolling prevention portion, 35... Drive gear notch, 36.・・・・・・
・Insulation cover 37...Protrusion, 38...-...
Cutout portion, 40... end support means. Figure 4 Figure 4

Claims (1)

【特許請求の範囲】[Claims] 加熱ローラの両端を、それぞれ分割可能な上側板と下側
板とから成る側板の下側板上に載置し且つ上側板を当接
して回動可能に支持し、この支持された加熱ローラ両端
部の周囲に断熱材から成るカバーを取りつけたことを特
徴とする定着装置。
Both ends of the heating roller are placed on the lower side plate of a side plate consisting of an upper side plate and a lower side plate that can be separated respectively, and are rotatably supported by abutting the upper side plate, and both ends of the heated roller are supported. A fixing device characterized in that a cover made of a heat insulating material is attached around the periphery.
JP2066385A 1990-03-16 1990-03-16 Fixing device Pending JPH03266871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2066385A JPH03266871A (en) 1990-03-16 1990-03-16 Fixing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2066385A JPH03266871A (en) 1990-03-16 1990-03-16 Fixing device

Publications (1)

Publication Number Publication Date
JPH03266871A true JPH03266871A (en) 1991-11-27

Family

ID=13314307

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2066385A Pending JPH03266871A (en) 1990-03-16 1990-03-16 Fixing device

Country Status (1)

Country Link
JP (1) JPH03266871A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004039502A (en) * 2002-07-04 2004-02-05 Fuji Xerox Co Ltd Heating roll unit and image forming device
JP2011158597A (en) * 2010-01-29 2011-08-18 Ricoh Co Ltd Roller replacement auxiliary tool of fixing unit
US8249486B2 (en) 2009-01-08 2012-08-21 Ricoh Company, Ltd. Fixing unit, roller replacement auxiliary tool of fixing unit, and image forming apparatus
EP2363760A3 (en) * 2010-01-27 2017-04-26 Ricoh Company, Limited Fixing device and image forming apparatus with fixing device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004039502A (en) * 2002-07-04 2004-02-05 Fuji Xerox Co Ltd Heating roll unit and image forming device
US8249486B2 (en) 2009-01-08 2012-08-21 Ricoh Company, Ltd. Fixing unit, roller replacement auxiliary tool of fixing unit, and image forming apparatus
EP2363760A3 (en) * 2010-01-27 2017-04-26 Ricoh Company, Limited Fixing device and image forming apparatus with fixing device
JP2011158597A (en) * 2010-01-29 2011-08-18 Ricoh Co Ltd Roller replacement auxiliary tool of fixing unit
US8611791B2 (en) 2010-01-29 2013-12-17 Ricoh Company, Ltd. Roller replacement auxiliary tool of a fixing unit that protects a roller

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