JP2013025846A5

JP2013025846A5 -

Info

Publication number: JP2013025846A5
Application number: JP2011160458A
Authority: JP
Filing date: 2011-07-22
Publication date: 2014-07-10
Anticipated expiration: 2031-07-22

Description

請求項３に記載の発明は、請求項２に記載の発明において、前記複数の係合部は、軸中心に向かう方向から見た断面の形状が先端の部分が周方向に延在した略Ｌ字形状を有し、
前記調芯リングを前記ロータフレームに接触させながら周方向に回転させることで、前記略Ｌ字形状の部分が周方向において前記複数の孔部に固定されることを特徴とする。請求項３に記載の発明によれば、ロータフレームに対して調芯リングを軸方向において押し付け、その後に回転させることで、調芯リングをロータフレームから軸方向に引き離すことができない構造が得られる。この構造によれば、組み立て作業が簡単でありながら、より確実な係合状態が得られる。 According to a third aspect of the present invention, in the second aspect of the present invention, the plurality of engaging portions are substantially L in which a shape of a cross section viewed from a direction toward the axial center extends in a circumferential direction. Has a shape,
The substantially L-shaped portion is fixed to the plurality of holes in the circumferential direction by rotating the alignment ring in the circumferential direction while being in contact with the rotor frame. According to the third aspect of the present invention, a structure is obtained in which the alignment ring cannot be pulled away from the rotor frame in the axial direction by pressing the alignment ring in the axial direction against the rotor frame and then rotating the alignment ring. . According to this structure, a more reliable engagement state can be obtained while the assembling work is simple.

請求項４に記載の発明は、請求項２または３に記載の発明において、前記シャフトを回転自在な状態で保持するハウジングと、前記ハウジングに設けられたフランジ部と、前記ロータフレームの一部を折り曲げることで形成された複数の爪部とを備え、前記ロータフレームの一部を折り曲げることで前記複数の孔部が設けられており、前記複数の爪部が前記フランジ部に非接触な状態で係合することで、前記ロータフレームの抜け落ちが防止されていることを特徴とする。請求項４に記載の発明によれば、調芯リングの係合部に係合するロータフレーム側の孔部が、ロータフレームの抜け落ちを防止する爪部を構成するために形成された孔（切り欠いた部分）を用いて構成されるので、作業工数の増加が抑えられ、またシンプルな構造とできる。 According to a fourth aspect of the present invention, in the second or third aspect of the present invention, a housing that holds the shaft in a rotatable state, a flange portion provided in the housing, and a part of the rotor frame are provided. A plurality of claw portions formed by bending, the plurality of hole portions are provided by bending a part of the rotor frame, and the plurality of claw portions are in contact with the flange portion. By engaging, the rotor frame is prevented from falling off. According to the fourth aspect of the present invention, the hole on the rotor frame side that engages with the engaging portion of the alignment ring is formed so as to constitute a claw portion that prevents the rotor frame from falling off. Since it is configured using a lacking part), the increase in work man-hours can be suppressed, and a simple structure can be achieved.

Claims

A rotating shaft,
A rotor frame that rotates with the shaft and is provided with a plurality of holes;
An alignment ring fixed to the rotor frame for holding a disk storage medium,
The spindle motor is characterized in that a plurality of engaging portions are provided on the bottom surface of the alignment ring.

2. The spindle motor according to claim 1, wherein the plurality of engaging portions have a shape that is caught in a plurality of holes in the rotor frame in a circumferential direction.

The plurality of engaging portions have a substantially L shape in which a shape of a cross section viewed from the direction toward the axial center extends in a circumferential direction at a tip portion .
3. The substantially L-shaped portion is fixed to the plurality of holes in the circumferential direction by rotating the alignment ring in the circumferential direction while contacting the rotor frame. Spindle motor.

A housing for holding the shaft in a rotatable state;
A flange portion provided in the housing;
A plurality of claw portions formed by bending a part of the rotor frame ,
The plurality of hole portions are provided by bending a part of the rotor frame, and the plurality of claw portions engage with the flange portion in a non-contact state, thereby preventing the rotor frame from falling off. the spindle motor according to claim 2 or 3, characterized in that is.