JPS63118060U

JPS63118060U -

Info

Publication number: JPS63118060U
Application number: JP748287U
Authority: JP
Priority date: 1987-01-23
Filing date: 1987-01-23
Publication date: 1988-07-30

Description

[Brief explanation of drawings]

第１図〜第３図は本考案の一実施例を説明する
ためのもので、このうち第１図はヒートロールの
回転停止時の安全装置の配置状態を示す側面図、
第２図はヒートロールの回転中における安全装置
の配置状態の要部を示す側面図、第３図は安全装
置の回路構成の要部を示す回路図、第４図は従来
の定着装置およびその安全装置の要部を示す斜視
図、第５図は安全装置を取り付けた定着装置の一
例を示す回路図である。１……ヒートロール（電熱装置）、１Ｂ……ヒ
ータ、４……サーモスタツト（温度検出器）、２
２……棒状部材、２４……ソレノイド、２７……
引つ張りばね、３３……ソレノイド駆動回路、３
１……タイミング制御回路。 Figures 1 to 3 are for explaining one embodiment of the present invention, of which Figure 1 is a side view showing the arrangement of the safety device when the rotation of the heat roll is stopped;
Fig. 2 is a side view showing the main parts of the arrangement of the safety device during rotation of the heat roll, Fig. 3 is a circuit diagram showing the main parts of the circuit configuration of the safety device, and Fig. 4 is a conventional fixing device and its FIG. 5 is a perspective view showing essential parts of the safety device, and FIG. 5 is a circuit diagram showing an example of a fixing device to which the safety device is attached. 1...Heat roll (electric heating device), 1B...Heater, 4...Thermostat (temperature detector), 2
2... Rod-shaped member, 24... Solenoid, 27...
Tension spring, 33...Solenoid drive circuit, 3
1...Timing control circuit.

補正昭６２．４．９実用新案登録請求の範囲を次のように補正する
。Amendment April 9, 1982 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】１可動部分を有する電熱装置と、この電熱装置
の異常温度を検出するための温度検出器と、前記
電熱装置の可動部分の停止時と動作時とで前記温
度検出器の前記可動部分に対する位置を変化させ
る位置変更機構とを具備することを特徴とする安
全装置。２可動部分を有する電熱装置が複写機のヒート
ロールであり、温度検出器がサーモスタツトある
いはサーモヒユーズであることを特徴とする実用
新案登録請求の範囲第１項記載の安全装置。３位置変更機構はヒートロールが停止している
状態で温度検出器をヒートロール表面に接触させ
、ヒートロールが回転している状態でヒートロー
ル表面から所定の距離だけ離れた位置に配置させ
ることを特徴とする実用新案登録請求の範囲第２
項記載の安全装置。 [Claims for Utility Model Registration] 1. An electric heating device having a movable part, a temperature detector for detecting an abnormal temperature of the electric heating device, and a temperature detector for detecting the temperature when the movable part of the electric heating device is stopped and in operation. A safety device comprising: a position changing mechanism that changes the position of the device with respect to the movable part. 2. The safety device according to claim 1, wherein the electric heating device having movable parts is a heat roll of a copying machine, and the temperature detector is a thermostat or a thermofuse. 3. The position change mechanism allows the temperature sensor to be placed in contact with the heat roll surface when the heat roll is stopped, and placed a predetermined distance away from the heat roll surface while the heat roll is rotating. Featured utility model registration claim No. 2
Safety devices listed in section.

Claims

[Claims for Utility Model Registration] 1. An electric heating device having a movable part, a temperature detector for detecting an abnormal temperature of the electric heating device, and a temperature detector for detecting the temperature when the movable part of the electric heating device is stopped and in operation. A safety device comprising: a position changing mechanism that changes the position of the device with respect to the movable part. 2. The safety device according to claim 1, wherein the electric heating device having a movable part is a heat roll of a copying machine, and the temperature detector is a thermostat or a thermofuse. 3. The position change mechanism allows the temperature sensor to be placed in contact with the heat roll surface when the heat roll is stopped, and placed a predetermined distance away from the heat roll surface while the heat roll is rotating. A safety device according to claim 2, characterized in that: