JPS62111614U

JPS62111614U -

Info

Publication number: JPS62111614U
Application number: JP53186U
Authority: JP
Priority date: 1986-01-07
Filing date: 1986-01-07
Publication date: 1987-07-16

Description

[Brief explanation of the drawing]

第１，２図は公知のロータリーエンコーダー。１：モーターフレーム、２：モーター駆動軸、
３：ロータリーエンコーダーの回転軸、４：ハウ
ジング、５：軸受、６：磁気デイスク、８：保護
カバー、１２：フレキシブルカツプリング。第３図も公知のロータリーエンコーダーで、１：モーターフレーム、２：モーター駆動軸、
３：インロー部、４：磁気メモリデイスク、５：
フレーム、６：磁気再生ヘツド、７：再生信号の
増巾、整回路。第４図は本考案の一実施例で、１：モーターフレーム、２：モーターの駆動軸
、３：座板、４：無給油軸受、６：磁気メモリデ
イスク、９：磁気再生ヘツド、１０：保護カバー
、３_２：ザグリ穴。第５図は第４図のＡ―Ａ矢視図で、３_１は３_２：座板のザグリ穴、３_４：空気の流出入口
。 Figures 1 and 2 show a known rotary encoder. 1: Motor frame, 2: Motor drive shaft,
3: rotary encoder rotation axis, 4: housing, 5: bearing, 6: magnetic disk, 8: protective cover, 12: flexible coupling. Figure 3 also shows a known rotary encoder, 1: motor frame, 2: motor drive shaft,
3: Pilot part, 4: Magnetic memory disk, 5:
Frame, 6: Magnetic reproducing head, 7: Reproducing signal amplification, conditioning circuit. Figure 4 shows an embodiment of the present invention, 1: motor frame, 2: motor drive shaft, 3: seat plate, 4: oil-free bearing, 6: magnetic memory disk, 9: magnetic reproducing head, 10: protection. Cover, 3 ₂ : Countersunk hole. Fig. 5 is a view taken along arrow A-A in Fig. 4, where 3 ₁ is 3 ₂ : counterbore hole in the seat plate, 3 ₄ : air inlet/outlet.

Claims

[Scope of Claim for Utility Model Registration] (1) A magnetic disk provided with a fitting hole and a fixing screw so that it can be fitted and fixed to a drive shaft, and having a magnetic scale on a circumferential surface or plane formed of a magnetic material; A seat plate is provided with an oil-free bearing or ball bearing that fits on the drive shaft, has a mounting hole in the drive shaft support, faces the magnetic scale surface, and has a magnetic sensor fixed thereon so as to maintain appropriate spacing. A magnetic rotary encoder. (2) A counterbore hole and at least two or more grooves leading from the seat plate to the side surface of the seat plate on the mounting surface of the seat plate to the drive shaft support, and a surface opposite to the mounting surface of the seat plate to the drive shaft support. A magnetic rotary encoder according to claim (1) for utility model registration, which is provided with at least two or more holes that communicate with counterbore holes. (3) The magnetic rotary encoder according to the registered claim (1), wherein a substrate on which a magnetic recording/reproducing signal amplification and waveform shaping circuit is mounted is supported and fixed on the seat plate.