JPS6417417U

JPS6417417U -

Info

Publication number: JPS6417417U
Application number: JP11247587U
Authority: JP
Priority date: 1987-07-22
Filing date: 1987-07-22
Publication date: 1989-01-27

Description

[Brief explanation of the drawing]

第１図は本考案にかかる速度検出器固定装置の
説明図、第２図は従来のスピンドルモータの構成
図、第３図は提案されている速度検出器の組み付
け位置説明図、第４図は提案されている速度検出
器の組み付け方式説明図である。２ａ……スピンドル、２ｅ……ベアリングケー
ス、３……速度検出器、３ａ……速度検出リング
、３ｂ……センサユニツトケース、１１……ホル
ダー、１１ａ……円筒部、１１ｂ……ツバ部、１
２ａ……外側にテーパが形成された第１リング、
１２ｂ……内側にテーパが形成された第２リング
、１３……リング押え、ＳＤ……小径部分、ＢＤ
……大径部分。 Fig. 1 is an explanatory diagram of the speed detector fixing device according to the present invention, Fig. 2 is a configuration diagram of a conventional spindle motor, Fig. 3 is an explanatory diagram of the assembly position of the proposed speed detector, and Fig. 4 is an explanatory diagram of the speed detector fixing device according to the present invention. FIG. 2 is an explanatory diagram of a proposed speed detector assembly method. 2a...Spindle, 2e...Bearing case, 3...Speed detector, 3a...Speed detection ring, 3b...Sensor unit case, 11...Holder, 11a...Cylindrical part, 11b...Brim part, 1
2a... a first ring tapered on the outside;
12b...Second ring tapered on the inside, 13...Ring holder, SD...Small diameter portion, BD
...Large diameter part.

Claims

[Scope of Claim for Utility Model Registration] In a speed detector fixing device that fixes a speed detector for detecting the rotational speed of a spindle to a bearing unit that rotatably supports the spindle, the speed detector is combined with a speed detection ring and a sensor unit. and a holder integrally formed with a cylindrical part and a collar part having a small diameter part with a small inner diameter and a large diameter part with a large diameter, and a case in which a sensor unit is housed in the small diameter part of the holder. , insert the first ring tapered on the outside from one side of the sensor unit case to the end of the small diameter portion, and insert the second ring tapered on the inside until the taper reaches the second ring. Fix the holder and sensor unit case by pushing it with a ring holder so that it makes surface contact with the taper of the first ring, and then press the holder's collar so that the sensor unit faces the speed detection ring fixed to the spindle outer periphery via a gap. A speed detector fixing device characterized by screwing the bearing unit to the case of the bearing unit.