JPH06258971A - Thermal fixing device - Google Patents

Thermal fixing device

Info

Publication number
JPH06258971A
JPH06258971A JP4420393A JP4420393A JPH06258971A JP H06258971 A JPH06258971 A JP H06258971A JP 4420393 A JP4420393 A JP 4420393A JP 4420393 A JP4420393 A JP 4420393A JP H06258971 A JPH06258971 A JP H06258971A
Authority
JP
Japan
Prior art keywords
frame
cover
heater
terminals
terminal
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
Application number
JP4420393A
Other languages
Japanese (ja)
Other versions
JP3155386B2 (en
Inventor
Toshitsugu Ishiguro
敏継 石黒
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.)
Toshiba TEC Corp
Original Assignee
Tokyo Electric 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 Tokyo Electric Co Ltd filed Critical Tokyo Electric Co Ltd
Priority to JP04420393A priority Critical patent/JP3155386B2/en
Publication of JPH06258971A publication Critical patent/JPH06258971A/en
Application granted granted Critical
Publication of JP3155386B2 publication Critical patent/JP3155386B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To facilitate the exchange work of a heater without requiring the disconnection/connection work of a cable by removing a cover from a frame so as to open the circumference of a terminal. CONSTITUTION:The thermal fixing device is composed of the frame 20 having side plates 21 facing each other, a cylindrical heating roller 1 whose both ends are supported by bearings 5 provided on the peripheries of opening parts 22 formed on the cside plates 21 and open, a pressing roller 2, a bar-like heater 3 inserted into the heating roller 1, a pair of terminals 31 and 32 elastically brought into contact with both ends of the heater 3, a cover 23 having a covering part 24 covering the heating roller 1 and freely attachably/detachably coupled to the frame 20, plural connection plates 25 and 26 connected with a power source and fixed on both end parts of the cover 23, connection parts 33 connecting the connection plates 25 and 26 with the terminal 31 and 32 and terminal holding parts 29 and 30 disposed on both sides of the frame 20 and holding the terminals 31 and 32, respectively.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、電子写真法により感光
体上に形成された画像を転写紙に転写し、その転写画像
を定着する熱定着装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat fixing device for transferring an image formed on a photoreceptor by an electrophotographic method onto a transfer paper and fixing the transferred image.

【0002】[0002]

【従来の技術】まず、従来例を図5に基づいて説明す
る。1は両端開口の筒状のヒートローラ、2はプレスロ
ーラ、3はヒートローラ1に挿入された棒状のヒータで
ある。そして、相対向する側板4には、ヒートローラ1
の両端外周を回転自在に支承する軸受5が固定されてい
るとともに、プレスローラ2の両端を回転自在に支承す
る軸受6が上方に付勢されて上下動自在に保持されてい
る。また、ヒートローラ1の一端外周にはモータの回転
を受けるギヤ7が固定されている。ヒートローラ1の周
囲を覆うカバー8と左右の側板4とは螺子9により結合
されている。さらに、このカバー8の内面には、接続板
10と温度ヒューズ11とサーモスタット12とサーミ
スタ14とが設けられている。さらに、ヒータ3の一端
に弾発的に接触された端子15が螺子16により接続板
10に接続されてカバー8に固定されている。すなわ
ち、ヒータ3の一端は、端子15と接続板10と温度ヒ
ューズ11とサーモスタット12とケーブル17とコネ
クタ(図示せず)とを介して電源(図示せず)の一極に
接続され、ヒータ3の他端はケーブル18とコネクタ
(図示せず)とを介して電源の他極に接続されている。
さらに、ヒータ3の他端を保持する金具19がカバー8
の端部に取り付けられている。なお、電源はヒートロー
ラ1の温度を検出するサーミスタ14によりオン、オフ
動作が制御される。
2. Description of the Related Art First, a conventional example will be described with reference to FIG. Reference numeral 1 is a cylindrical heat roller having openings at both ends, 2 is a press roller, and 3 is a rod-shaped heater inserted in the heat roller 1. The heat roller 1 is attached to the side plates 4 facing each other.
A bearing 5 that rotatably supports the outer circumferences of both ends is fixed, and a bearing 6 that rotatably supports both ends of the press roller 2 is urged upward and is held so as to be vertically movable. A gear 7 that receives the rotation of the motor is fixed to the outer periphery of one end of the heat roller 1. The cover 8 that covers the periphery of the heat roller 1 and the left and right side plates 4 are joined by screws 9. Further, a connection plate 10, a temperature fuse 11, a thermostat 12, and a thermistor 14 are provided on the inner surface of the cover 8. Further, the terminal 15 elastically contacted with one end of the heater 3 is connected to the connection plate 10 by the screw 16 and fixed to the cover 8. That is, one end of the heater 3 is connected to one pole of a power source (not shown) through the terminal 15, the connecting plate 10, the temperature fuse 11, the thermostat 12, the cable 17 and the connector (not shown), and the heater 3 The other end of is connected to the other pole of the power supply via a cable 18 and a connector (not shown).
Further, the metal fitting 19 that holds the other end of the heater 3 is covered by the cover 8.
Attached to the end of. The power is controlled to be turned on and off by the thermistor 14 which detects the temperature of the heat roller 1.

【0003】[0003]

【発明が解決しようとする課題】図5に示す従来の構造
では、ヒータ3の端部を保持する端子15及び金具19
がカバー8に固定されているため、ヒータ3の交換に際
してカバー8を側板4に結合した状態でヒータ3を着脱
する必要がある。すなわち、ケーブル18が接続された
コネクタを分離し、金具19をカバー8から外した後
に、ヒータ3を右方向に引き抜き、新しいヒータ3を右
方からヒートローラ1の中心部に挿入してその先端を端
子15に当接させる作業を行うものである。しかし、端
子15の周辺がカバー8により覆われているため、ヒー
タ3の端部中心に形成した凹部に端子15の先端を係合
させることが困難である。
In the conventional structure shown in FIG. 5, the terminal 15 for holding the end of the heater 3 and the metal fitting 19 are provided.
Is fixed to the cover 8, it is necessary to attach and detach the heater 3 with the cover 8 coupled to the side plate 4 when replacing the heater 3. That is, the connector to which the cable 18 is connected is separated, the metal fitting 19 is removed from the cover 8, the heater 3 is pulled out to the right, the new heater 3 is inserted from the right into the center of the heat roller 1, and the tip thereof is inserted. Is to be brought into contact with the terminal 15. However, since the periphery of the terminal 15 is covered by the cover 8, it is difficult to engage the tip of the terminal 15 with the recess formed in the center of the end of the heater 3.

【0004】[0004]

【課題を解決するための手段】本発明は、相対向する側
板を有するフレームと、前記側板に形成された開口部の
周縁に設けられた軸受に両端が回転自在に支承された両
端開口の筒状のヒートローラと、このヒートローラに圧
接された回転自在のプレスローラと、前記ヒートローラ
の中心部に挿入された棒状のヒータと、このヒータの両
端に弾発的に接触された一対の端子と、前記ヒートロー
ラを覆う覆い部を有して前記フレームに着脱自在に結合
されるカバーと、電源に接続されて前記カバーの両端部
に固定された複数の接続板と、これらの接続板と前記端
子とを接続する接続部と、前記フレームの両側に配設さ
れて前記端子のそれぞれを保持する端子保持部とにより
構成する。
DISCLOSURE OF THE INVENTION The present invention is directed to a frame having opposite side plates, and a cylinder having both end openings rotatably supported by bearings provided at the periphery of the opening formed in the side plates. -Shaped heat roller, a rotatable press roller pressed against the heat roller, a rod-shaped heater inserted in the center of the heat roller, and a pair of terminals elastically contacting both ends of the heater. A cover that has a cover portion that covers the heat roller and is detachably coupled to the frame; a plurality of connection plates that are connected to a power source and fixed to both ends of the cover; and these connection plates. It is configured by a connecting portion that connects the terminal and a terminal holding portion that is disposed on both sides of the frame and holds each of the terminals.

【0005】[0005]

【作用】本発明は、接続部と接続板とを介して電源に接
続される対の端子がフレームの端子保持部に保持される
ため、接続部の接続を断ちカバーをフレームから外した
ときに、フレームの両側に対の端子を開放させた状態で
安定させることができ、したがって、ケーブルの断接作
業を伴うことなくヒータの取り付け及び交換作業を容易
に行うことができる。
According to the present invention, since the pair of terminals connected to the power source through the connecting portion and the connecting plate are held by the terminal holding portion of the frame, the connection of the connecting portion is cut off and the cover is removed from the frame. It is possible to stabilize the pair of terminals on both sides of the frame in an open state, and therefore, it is possible to easily attach and replace the heater without connecting and disconnecting the cable.

【0006】[0006]

【実施例】本発明の一実施例を図1ないし図4に基づい
て説明する。図5において説明した部分と同一部分は同
一符号を用いて説明する。図1は断面図で、図中、20
はフレームである。このフレーム20の両側に形成され
た側板21には、筒状のヒートローラ1を突出させる開
口部22が形成され、この開口部22の周縁にはヒート
ローラ1の端部外周を回転自在に支承する環状の軸受5
が固定されている。また、側板21の下方にはプレスロ
ーラ2を回転自在に支承する軸受6が上方に付勢されて
上下動自在に保持されている。さらに、ヒートローラ1
の一端外周にはモータの回転力を受けるギヤ7が固定さ
れている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The same parts as those described in FIG. 5 will be described using the same reference numerals. FIG. 1 is a sectional view, in which 20
Is a frame. The side plates 21 formed on both sides of the frame 20 are formed with openings 22 through which the cylindrical heat roller 1 is projected. Annular bearing 5
Is fixed. A bearing 6 for rotatably supporting the press roller 2 is urged upward and held vertically below the side plate 21. Furthermore, heat roller 1
A gear 7 that receives the rotational force of the motor is fixed to the outer periphery of one end of the.

【0007】23はヒートローラ1の周囲を覆う覆い部
24を有するカバーで、その覆い部24の内面には、両
側に位置する接続板25,26と、中央部に位置する金
属板27,28とが固定的に設けられ、接続板25と金
属板27とは温度ヒューズ11により接続され、接続板
26と金属板28とはサーモスタット12により接続さ
れ、金属板28にはヒートローラ1の温度を検出して電
源(図示せず)のオン、オフ動作を制御するサーミスタ
14が保持されている。また、金属板27,28は極毎
に電源に接続されている。さらに、フレーム20の両側
の側板21には端子保持部29,30が一体に形成さ
れ、これらの端子保持部29,30にはヒータ3の端部
に弾発的に接触された端子31,32が保持されてい
る。これらの端子31,32は接続板25,26のそれ
ぞれに接続部としての螺子33により接続されている。
Reference numeral 23 is a cover having a cover portion 24 for covering the periphery of the heat roller 1. On the inner surface of the cover portion 24, connecting plates 25 and 26 located on both sides and metal plates 27 and 28 located in the central portion are provided. Are fixedly provided, the connection plate 25 and the metal plate 27 are connected by the thermal fuse 11, the connection plate 26 and the metal plate 28 are connected by the thermostat 12, and the temperature of the heat roller 1 is set on the metal plate 28. A thermistor 14 for detecting and controlling the on / off operation of a power supply (not shown) is held. The metal plates 27 and 28 are connected to a power source for each pole. Further, terminal holding portions 29, 30 are integrally formed on the side plates 21 on both sides of the frame 20, and the terminal holding portions 29, 30 are elastically contacted with the end portions of the heater 3 by the terminals 31, 32. Is held. These terminals 31 and 32 are connected to the connection plates 25 and 26, respectively, by screws 33 as connecting portions.

【0008】次に、図4に基づいて右側の端子32の支
持構造について詳しく説明する。端子保持部30はカバ
ー23の覆い部24側に突出する突片状の形状を呈し、
この突片状の端子保持部30を挾持する弾性片34が端
子32に形成されている。左方の端子31の支持構造
は、右方の端子32の支持構造と対称の形状をしている
他は変わらないので説明を省略する。
Next, the support structure for the right terminal 32 will be described in detail with reference to FIG. The terminal holding portion 30 has a projecting piece shape protruding toward the cover portion 24 side of the cover 23,
An elastic piece 34 that holds the projecting piece-shaped terminal holding portion 30 is formed on the terminal 32. The supporting structure of the terminal 31 on the left side is the same as that of the supporting structure of the terminal 32 on the right side, and the description thereof is omitted.

【0009】また、図3に示すように、フレーム20に
は、排紙ローラ35と、下方に付勢されて排紙ローラ3
5に弾性的に接触する押えローラ36とが回転自在に保
持されている。なお、図示しないが、フレーム20とカ
バー23との対向面には、互いに係脱自在に係合する係
止孔と係止爪とが形成されているものである。
Further, as shown in FIG. 3, the frame 20 has a paper discharge roller 35 and a paper discharge roller 3 which is urged downward.
A pressing roller 36 elastically contacting the roller 5 is rotatably held. Although not shown, a locking hole and a locking claw that are releasably engaged with each other are formed on the facing surfaces of the frame 20 and the cover 23.

【0010】このような構成において、ヒータ3の取り
付け又は交換に際しては、図1に示す状態において螺子
33を外して接続板25,26と端子31,32との間
の接続を断ち、カバー23をフレーム20から外す。こ
の状態では、図2及び図3に示すように、端子31,3
2は周囲が開放された状態でフレーム20側の端子保持
部29,30により保持される。したがって、ヒータ3
の交換を容易に行うことができる。ヒータ3の取り付け
に際しては、端子31,32が端子保持部29,30に
より保持されているので、そのままの状態で端子31,
32を外側に弾性的に屈撓させてヒータ3をヒートロー
ラ1に挿入することもでき、また、端子31,32は弾
性片34をもって端子保持部29,30を挾持している
だけであるため、端子31,32を端子保持部29,3
0から外してヒートローラ1に挿入することもできる。
これにより、ヒータ3の着脱操作を極めて容易に行うこ
とができる。
In such a structure, when mounting or replacing the heater 3, the screw 33 is removed in the state shown in FIG. 1 to disconnect the connection between the connection plates 25 and 26 and the terminals 31 and 32, and the cover 23 is removed. Remove from frame 20. In this state, as shown in FIGS. 2 and 3, the terminals 31, 3 are
2 is held by the terminal holding portions 29 and 30 on the frame 20 side in a state where the periphery is open. Therefore, the heater 3
Can be easily replaced. When the heater 3 is attached, since the terminals 31 and 32 are held by the terminal holding portions 29 and 30, the terminals 31 and 32 are kept as they are.
The heater 3 can be inserted into the heat roller 1 by elastically flexing 32 outward, and the terminals 31 and 32 only hold the terminal holding portions 29 and 30 with the elastic pieces 34. , The terminals 31, 32 to the terminal holding portions 29, 3
It can be removed from 0 and inserted into the heat roller 1.
As a result, the attachment / detachment operation of the heater 3 can be performed extremely easily.

【0011】ヒータ3の取り付けの後は、カバー23を
フレーム20に係合する。この場合、フレーム20とカ
バー23との寸法関係を定めることにより、端子31,
32を覆い部24により押えることもできるが、螺子3
3で端子31,32を接続板25,26に接続すること
により、端子31,32はより強固に固定される。
After mounting the heater 3, the cover 23 is engaged with the frame 20. In this case, by determining the dimensional relationship between the frame 20 and the cover 23, the terminals 31,
32 can be pressed by the cover 24, but the screw 3
By connecting the terminals 31 and 32 to the connection plates 25 and 26 at 3, the terminals 31 and 32 are more firmly fixed.

【0012】[0012]

【発明の効果】本発明は上述のように、カバーが着脱自
在に結合されるフレームの両側に、ヒータの両端に接触
される端子を保持する端子保持部を設けたので、カバー
側の接続板とフレーム側の端子との間の接続を断ちカバ
ーをフレームから外したときに、フレームの両側に対の
端子を開放させた状態で安定させることができ、したが
って、ケーブルの断接作業を伴うことなくヒータの取り
付け及び交換作業を容易に行うことができるとの効果を
有する。
As described above, according to the present invention, since the terminal holding portions for holding the terminals contacting both ends of the heater are provided on both sides of the frame to which the cover is detachably coupled, the connection plate on the cover side is provided. When the cover is removed from the frame by disconnecting the connection between the terminal on the side of the frame and the terminal on the side of the frame, it is possible to stabilize with the pair of terminals open on both sides of the frame, and therefore, work to connect and disconnect the cable Without this, it is possible to easily attach and replace the heater.

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

【図1】本発明の一実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.

【図2】フレームからカバーを外した状態を示す断面図
である。
FIG. 2 is a cross-sectional view showing a state where a cover is removed from the frame.

【図3】フレームからカバーを外した状態を示す斜視図
である。
FIG. 3 is a perspective view showing a state in which a cover is removed from the frame.

【図4】端子の支持構造を示す一部の分解斜視図であ
る。
FIG. 4 is a partial exploded perspective view showing a terminal support structure.

【図5】従来例を示す断面図である。FIG. 5 is a cross-sectional view showing a conventional example.

【符号の説明】[Explanation of symbols]

1 ヒートローラ 2 プレスローラ 3 ヒータ 5 軸受 20 フレーム 21 側板 22 開口部 23 カバー 24 覆い部 25,26 接続板 29,30 端子保持部 31,32 端子 33 接続部 1 Heat Roller 2 Press Roller 3 Heater 5 Bearing 20 Frame 21 Side Plate 22 Opening 23 Cover 24 Cover 25, 26 Connection Plate 29, 30 Terminal Holding 31, 32 Terminal 33 Connection

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 相対向する側板を有するフレームと、前
記側板に形成された開口部の周縁に設けられた軸受に両
端が回転自在に支承された両端開口の筒状のヒートロー
ラと、このヒートローラに圧接された回転自在のプレス
ローラと、前記ヒートローラの中心部に挿入された棒状
のヒータと、このヒータの両端に弾発的に接触された一
対の端子と、前記ヒートローラを覆う覆い部を有して前
記フレームに着脱自在に結合されるカバーと、電源に接
続されて前記カバーの両端部に固定された複数の接続板
と、これらの接続板と前記端子とを接続する接続部と、
前記フレームの両側に配設されて前記端子のそれぞれを
保持する端子保持部とよりなることを特徴とする熱定着
装置。
1. A frame having opposed side plates, a cylindrical heat roller having both ends open and having both ends rotatably supported by bearings provided at the periphery of an opening formed in the side plate, and the heat roller. A rotatable press roller pressed against the roller, a rod-shaped heater inserted in the center of the heat roller, a pair of terminals elastically contacting both ends of the heater, and a cover for covering the heat roller. A cover that is detachably coupled to the frame, a plurality of connecting plates that are connected to a power source and fixed to both ends of the cover, and a connecting part that connects these connecting plates to the terminals. When,
A thermal fixing device comprising terminal holding portions which are arranged on both sides of the frame and hold each of the terminals.
JP04420393A 1993-03-05 1993-03-05 Thermal fixing device Expired - Fee Related JP3155386B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04420393A JP3155386B2 (en) 1993-03-05 1993-03-05 Thermal fixing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04420393A JP3155386B2 (en) 1993-03-05 1993-03-05 Thermal fixing device

Publications (2)

Publication Number Publication Date
JPH06258971A true JPH06258971A (en) 1994-09-16
JP3155386B2 JP3155386B2 (en) 2001-04-09

Family

ID=12685011

Family Applications (1)

Application Number Title Priority Date Filing Date
JP04420393A Expired - Fee Related JP3155386B2 (en) 1993-03-05 1993-03-05 Thermal fixing device

Country Status (1)

Country Link
JP (1) JP3155386B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6522846B2 (en) * 1999-12-28 2003-02-18 Toshiba Tec Kabushiki Kaisha Fixing device having connection member for supplying AC current to an electromagnetic induction coil
KR100465243B1 (en) * 2002-08-23 2005-01-13 삼성전자주식회사 Electrophotographic printer having power supply apparatus for pre transfer lamp unit
JP2008233886A (en) * 2007-02-19 2008-10-02 Ricoh Co Ltd Fixing device and image forming apparatus
JP2012521653A (en) * 2009-03-23 2012-09-13 株式会社テラセミコン In-line heat treatment equipment
JP2015129833A (en) * 2014-01-07 2015-07-16 ブラザー工業株式会社 Fixing apparatus and image forming apparatus
JP2018169528A (en) * 2017-03-30 2018-11-01 ブラザー工業株式会社 Image forming apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6522846B2 (en) * 1999-12-28 2003-02-18 Toshiba Tec Kabushiki Kaisha Fixing device having connection member for supplying AC current to an electromagnetic induction coil
US6813456B2 (en) 1999-12-28 2004-11-02 Kabushiki Kaisha Toshiba Fixing device
US7062193B2 (en) 1999-12-28 2006-06-13 Kabushiki Kaisha Toshiba Fixing device that is detachable from an image forming apparatus
KR100465243B1 (en) * 2002-08-23 2005-01-13 삼성전자주식회사 Electrophotographic printer having power supply apparatus for pre transfer lamp unit
JP2008233886A (en) * 2007-02-19 2008-10-02 Ricoh Co Ltd Fixing device and image forming apparatus
US8428498B2 (en) 2007-02-19 2013-04-23 Ricoh Company, Ltd. Fixing device and image forming apparatus including same
JP2012521653A (en) * 2009-03-23 2012-09-13 株式会社テラセミコン In-line heat treatment equipment
JP2015129833A (en) * 2014-01-07 2015-07-16 ブラザー工業株式会社 Fixing apparatus and image forming apparatus
JP2018169528A (en) * 2017-03-30 2018-11-01 ブラザー工業株式会社 Image forming apparatus

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