JPH0370061U

JPH0370061U -

Info

Publication number: JPH0370061U
Application number: JP13031089U
Authority: JP
Priority date: 1989-11-08
Filing date: 1989-11-08
Publication date: 1991-07-12

Description

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

第１図は本考案にかかるエンコーダ付きモータ
の一実施例を示す断面側面図、第２図は本考案に
かかるエンコーダ付きモータの別の実施例を示す
断面側面図、第３図は上記各実施例中のエンコー
ダの例を示す斜視図、第４図は同上エンコーダ中
の磁気センサの例を示す斜視図、第５図は同上磁
気センサの検出回路の例を示す回路図、第６図は
上記磁気センサの出力を磁気ノイズの影響を受け
た場合と受けない場合とに分けて示す線図、第７
図は上記エンコーダの出力を磁気ノイズの影響を
受けた場合と受けない場合とに分けて示す波形図
、第８図は従来のエンコーダ付きモータの例を示
す断面側面図である。１……モータ、２……モータケース、３……端
板、４……回転軸、５……磁気エンコーダ、６…
…磁気ドラム、７……磁気センサ、９……エンコ
ーダケース、１５……磁気抵抗素子。 FIG. 1 is a cross-sectional side view showing one embodiment of a motor with an encoder according to the present invention, FIG. 2 is a cross-sectional side view showing another embodiment of the motor with an encoder according to the present invention, and FIG. 3 is a cross-sectional side view showing each of the above embodiments. FIG. 4 is a perspective view showing an example of the magnetic sensor in the above encoder, FIG. 5 is a circuit diagram showing an example of the detection circuit of the above magnetic sensor, and FIG. 6 is the above example. Diagram 7 showing the output of the magnetic sensor divided into cases where it is affected by magnetic noise and cases where it is not affected by magnetic noise.
The figure is a waveform diagram showing the output of the encoder when it is affected by magnetic noise and when it is not affected by magnetic noise, and FIG. 8 is a cross-sectional side view showing an example of a conventional motor with an encoder. 1... Motor, 2... Motor case, 3... End plate, 4... Rotating shaft, 5... Magnetic encoder, 6...
...Magnetic drum, 7...Magnetic sensor, 9...Encoder case, 15...Magnetic resistance element.

Claims

【実用新案登録請求の範囲】磁気ドラムと、この磁気ドラムに対向配置され
た磁気センサとを有する磁気エンコーダがモータ
に組み付けられてなるエンコーダ付きモータにお
いて、上記モータは、少なくとも回転軸方向一端側が
磁性材の端板で形成されたモータケースを有し、上記磁気エンコーダは、モータケースの上記磁
性材の端板側に固定された磁性材のエンコーダケ
ースを有し、上記磁気ドラムは、周面に磁気信号が着磁記録
されると共にモータによつて回転駆動されるもの
であり、上記磁気センサは、上記回転軸方向に形成され
た磁気抵抗素子を有してなるエンコーダ付きモー
タ。[Claims for Utility Model Registration] An encoder-equipped motor in which a magnetic encoder having a magnetic drum and a magnetic sensor disposed opposite to the magnetic drum is assembled into the motor, wherein at least one end in the direction of the rotational axis of the motor is magnetic. The magnetic encoder has an encoder case made of a magnetic material fixed to the end plate of the magnetic material of the motor case, and the magnetic drum has a motor case formed of an end plate of the magnetic material. A motor with an encoder, wherein a magnetic signal is magnetized and recorded and is rotationally driven by a motor, wherein the magnetic sensor has a magnetoresistive element formed in the direction of the rotation axis.