JPH0549199A - Fixing structure of spindle motor - Google Patents

Fixing structure of spindle motor

Info

Publication number
JPH0549199A
JPH0549199A JP21932791A JP21932791A JPH0549199A JP H0549199 A JPH0549199 A JP H0549199A JP 21932791 A JP21932791 A JP 21932791A JP 21932791 A JP21932791 A JP 21932791A JP H0549199 A JPH0549199 A JP H0549199A
Authority
JP
Japan
Prior art keywords
spindle motor
shaft
disc unit
flange
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP21932791A
Other languages
Japanese (ja)
Other versions
JP3122822B2 (en
Inventor
Tokukado Ogawa
徳門 小河
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NAGANO NIPPON DENSAN KK
NIHON DENSAN NAGANO KK
Original Assignee
NAGANO NIPPON DENSAN KK
NIHON DENSAN NAGANO KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NAGANO NIPPON DENSAN KK, NIHON DENSAN NAGANO KK filed Critical NAGANO NIPPON DENSAN KK
Priority to JP03219327A priority Critical patent/JP3122822B2/en
Publication of JPH0549199A publication Critical patent/JPH0549199A/en
Application granted granted Critical
Publication of JP3122822B2 publication Critical patent/JP3122822B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Rotational Drive Of Disk (AREA)
  • Motor Or Generator Frames (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

PURPOSE:To enhance the performance of spindle motor and disc unit by driving a screw into a pipe part and fixing the spindle motor to the disc unit while sandwiching the disc unit, at the mounting part thereof, by means of the step part of shaft and a flange. CONSTITUTION:A spindle motor 20 is fixed to a disc unit A by inserting a pipe part 31 into a fixing hole 34 made through the base plate (part to be fixed) of the disc unit A with no rattling and then screwing the external thread 331 of a fixing screw 33 into the internal thread 311 of the pipe part 31 thereby sandwiching the base plate P by means of the step part 211 of a shaft 21 and a flange 32. The pipe part 31 is formed thinner than the shaft 21 at the lower end of the shaft 21. Consequently, dust is blocked from flowing through the gap between the spindle motor 20 and the disc unit A and thereby the performance of the spindle motor 20 and the disc unit A can highly accurately be maintained.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、ディスク装置にスピン
ドルモータをフランジを用いないで取付けるためのスピ
ンドルモータの取付構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spindle motor mounting structure for mounting a spindle motor on a disk device without using a flange.

【０００２】[0002]

【従来の技術】従来、主としてディスク（磁気ディス
ク、光ディスク）等を回転させるために使用される一般
にスピンドルモータと呼ばれているモータがある。この
スピンドルモータは、図２に示すようにスピンドルモー
タ１０の全体を磁気ディスク装置又は光ディスク装置等
のディスク装置Ａに支持する固定フレーム１１と、ディ
スクＤが装着されたロータ１２を回転自在に支持する軸
１３とを有している。軸１３は固定フレーム１１に立設
されている。固定フレーム１１には、ディスク装置Ａに
取付けるためのフランジ１４が下部に形成されている。2. Description of the Related Art Conventionally, there is a motor generally called a spindle motor which is mainly used for rotating a disk (magnetic disk, optical disk) or the like. As shown in FIG. 2, this spindle motor rotatably supports a fixed frame 11 that supports the entire spindle motor 10 on a disk device A such as a magnetic disk device or an optical disk device, and a rotor 12 on which a disk D is mounted. And a shaft 13. The shaft 13 is erected on the fixed frame 11. The fixed frame 11 is formed with a flange 14 at the bottom for attaching to the disk device A.

【０００４】[0004]

【発明が解決しようとする課題】ところが、このような
スピンドルモータ１０は、取付け高さがフランジ１４の
厚みＴを含めた高さＨになるため、フランジの厚みＴの
分だけ薄型化を図ることができないという問題点を有し
ている。However, since the mounting height of such a spindle motor 10 becomes the height H including the thickness T of the flange 14, the thickness of the spindle motor 10 should be reduced by the thickness T of the flange. It has a problem that it can not be done.

【０００５】[0005]

【課題を解決するための手段】本発明は、ロータを回転
自在に具えた軸を有するスピンドルモータにおいて、前
記軸の一端に外径が前記軸より細く形成されディスク装
置の被取付部の取付孔に挿入されるパイプ状部と、前記
パイプ状部内にねじ込まれ一端に鍔を具え前記軸の段部
と前記鍔とで前記被取付部を挾み込む取付ねじとを有す
る構造により、前記の課題を解決したものである。According to the present invention, in a spindle motor having a shaft having a rotor rotatably mounted, one end of the shaft is formed to have an outer diameter smaller than that of the shaft. The pipe-shaped portion to be inserted into the pipe-shaped portion, the stepped portion of the shaft that is screwed into the pipe-shaped portion and has a collar at one end, and a mounting screw that sandwiches the mounted portion with the collar, Is a solution.

【０００６】[0006]

【作用】パイプ状部をディスク装置の被装着部に形成し
た孔に挿入し、パイプ状部内にねじをねじ込み、軸の段
部と鍔とで前記被装着部を挾み込んでディスク装置にス
ピンドルモータを取付ける。The pipe-shaped portion is inserted into the hole formed in the mounted portion of the disk device, a screw is screwed into the pipe-shaped portion, and the mounted portion is sandwiched by the step portion of the shaft and the collar, and the spindle is mounted on the disk device. Install the motor.

【０００７】[0007]

【実施例】以下、本発明の実施例を図面に基づいて説明
する。スピンドルモータは、図１に示すように、スピン
ドルモータ２０全体を磁気ディスク装置又は光ディスク
装置等のディスク装置Ａに支持する軸２１と、ディスク
Ｄが装着され一対のベアリング２２，２２によって軸２
１に回転自在に設けられたロータ２３とを有している。
ロータ２３の回転は、軸２１に設けられた電機子２４
と、ロータ２３の内周に設けられた磁石２５との磁気作
用によって行なわれる。Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the spindle motor includes a shaft 21 for supporting the entire spindle motor 20 on a disk device A such as a magnetic disk device or an optical disk device, and a shaft 2 with a pair of bearings 22, 22 on which a disk D is mounted.
1 has a rotor 23 rotatably provided.
Rotation of the rotor 23 is performed by the armature 24 provided on the shaft 21.
And the magnetic action of the magnet 25 provided on the inner circumference of the rotor 23.

【０００８】スピンドルモータ２０は取付構造３０によ
って、ディスク装置Ａに取付けられる。取付構造３０
は、軸２１の下端に外径を軸２１より細く形成されたパ
イプ状部３１と、パイプ状部３１にねじ込まれ一端に鍔
３２を有する取付ねじ３３とで構成されている。パイプ
状部３１の内周には雌ねじ３１１が形成され、取付ねじ
３３の外周には雄ねじ３３１が形成されている。ディス
ク装置Ａへのスピンドルモータ２０の取付は、パイプ状
部３１をディスク装置Ａのベースプレート（被取付部）
Ｐに形成された取付孔３４に「がた」無く挿入し、パイ
プ状部３１の雌ねじ３１１に取付ねじ３３の雄ねじ３３
１をねじ込み、軸２１の段部２１１と鍔３２とでベース
プレートＰを挾み込むことによって行なわれる。The spindle motor 20 is mounted on the disk device A by a mounting structure 30. Mounting structure 30
Is composed of a pipe-shaped portion 31 having an outer diameter smaller than that of the shaft 21 at the lower end of the shaft 21, and a mounting screw 33 screwed into the pipe-shaped portion 31 and having a flange 32 at one end. A female screw 311 is formed on the inner periphery of the pipe-shaped portion 31, and a male screw 331 is formed on the outer periphery of the mounting screw 33. When mounting the spindle motor 20 on the disk device A, the pipe-shaped portion 31 is attached to the base plate (mounted part) of the disk device A.
It is inserted into the mounting hole 34 formed in P without "rattle", and the male screw 33 of the mounting screw 33 is inserted into the female screw 311 of the pipe-shaped portion 31.
1 is screwed in, and the step portion 211 of the shaft 21 and the collar 32 sandwich the base plate P.

【０００９】このようにしてスピンドルモータ２０を取
付構造３０によってディスク装置Ａに取付けると次のよ
うな利点が生じる。 (1) 取付ねじ３３の鍔３２によって、スピンドルモータ
２０とディスク装置Ａとの間での塵埃の流れを阻止する
ことができ、スピンドルモータ２０とディスク装置Ａと
の性能を高度に維持することができる。 (2) 従来必要としていたフランジが不要になるため、ス
ピンドルモータ２０全体の高さＨを低くすることがで
き、スピンドルモータ２０の薄型化を図ることができ
る。具体的にスピンドルモータ２０の高さは、一例を挙
げると、フランジの厚みである約１．５ｍｍ程低くする
ことができ、約９ｍｍ弱の高さにできる。即ち、約１５
パーセント低くすることができ、これは、コンピュータ
の小型化のために薄型化が強く要求されているスピンド
ルモータ２０においては、顕著な効果である。 (3) フランジが無くなることから、スピンドルモータ２
０の軽量化と構造の簡素化を図ることができる。 (4) スピンドルモータ２０を１個の取付ねじ３３で取付
けることができるため、取付作業が短時間ですむ。又、
スピンドルモータの交換も容易且つ短時間に行なうこと
ができる。When the spindle motor 20 is mounted on the disk device A by the mounting structure 30 in this manner, the following advantages are brought about. (1) The flange 32 of the mounting screw 33 can block the flow of dust between the spindle motor 20 and the disk device A, and the performance of the spindle motor 20 and the disk device A can be maintained at a high level. it can. (2) Since the flange which has been conventionally required is not required, the height H of the entire spindle motor 20 can be reduced, and the spindle motor 20 can be thinned. Specifically, for example, the height of the spindle motor 20 can be lowered by about 1.5 mm, which is the thickness of the flange, and can be set to about 9 mm. That is, about 15
It can be made a low percentage, which is a remarkable effect in the spindle motor 20 in which the thinning is strongly demanded for the miniaturization of the computer. (3) Spindle motor 2 because there is no flange
Weight reduction of 0 and simplification of structure can be achieved. (4) Since the spindle motor 20 can be mounted with the single mounting screw 33, the mounting work can be completed in a short time. or,
The spindle motor can be replaced easily and in a short time.

【００１０】[0010]

【発明の効果】本発明のスピンドルモータの取付構造に
よると次の効果を奏する。 (1) 取付ねじの鍔によって、スピンドルモータとディス
ク装置との間での塵埃の流れを阻止することができ、ス
ピンドルモータとディスク装置の性能を高度に維持する
ことができる。 (2) 従来必要としていたフランジが不要になるため、ス
ピンドルモータ全体の高さを低くすることができ、スピ
ンドルモータの薄型化を図ることができる。 (3) フランジが無くなることから、スピンドルモータの
軽量化と構造の簡素化を図ることができる。 (4) スピンドルモータを１個の取付ねじで取付けるた
め、取付作業時間を短縮させることができる。The spindle motor mounting structure of the present invention has the following effects. (1) The flange of the mounting screw can prevent dust from flowing between the spindle motor and the disk device, and can maintain high performance of the spindle motor and the disk device. (2) Since the flange that was required in the past is not necessary, the height of the entire spindle motor can be reduced, and the spindle motor can be made thinner. (3) Since the flange is eliminated, it is possible to reduce the weight of the spindle motor and simplify the structure. (4) Since the spindle motor is mounted with one mounting screw, the mounting work time can be shortened.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の取付構造を具えたスピンドルモータの
軸に沿った断面図である。FIG. 1 is a sectional view along a shaft of a spindle motor having a mounting structure according to the present invention.

【図２】従来のスピンドルモータの軸に沿った断面図で
ある。FIG. 2 is a sectional view taken along the axis of a conventional spindle motor.

【符号の説明】[Explanation of symbols]

Ｐ ベースプレート（被取付部） ２０ スピンドルモータ ２１ 軸 ２２ ロータ ３０ 取付構造 ３１ パイプ状部 ３２ 鍔 ３３ 取付ねじ ３４ 取付孔 ２１１ 段部 P Base plate (attached part) 20 Spindle motor 21 Shaft 22 Rotor 30 Mounting structure 31 Pipe-shaped part 32 Collar 33 Mounting screw 34 Mounting hole 211 Step

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 ロータを回転自在に具えた軸を有するス
ピンドルモータにおいて、前記軸の一端に外径が前記軸
より細く形成されディスク装置の被取付部の取付孔に挿
入されるパイプ状部と、前記パイプ状部内にねじ込まれ
一端に鍔を具え前記軸の段部と前記鍔とで前記被取付部
を挾み込む取付ねじとを有することを特徴とする、スピ
ンドルモータの取付構造。1. A spindle motor having a shaft having a rotor rotatably mounted, wherein a pipe-shaped portion formed at one end of the shaft has an outer diameter smaller than that of the shaft and is inserted into a mounting hole of a mounted portion of a disk device. A mounting structure for a spindle motor, comprising: a stepped portion of the shaft that is screwed into the pipe-shaped portion and has a flange at one end; and a mounting screw that sandwiches the mounted portion with the collar.
JP03219327A 1991-08-06 1991-08-06 Spindle motor mounting structure Expired - Fee Related JP3122822B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP03219327A JP3122822B2 (en) 1991-08-06 1991-08-06 Spindle motor mounting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP03219327A JP3122822B2 (en) 1991-08-06 1991-08-06 Spindle motor mounting structure

Publications (2)

Publication Number Publication Date
JPH0549199A true JPH0549199A (en) 1993-02-26
JP3122822B2 JP3122822B2 (en) 2001-01-09

Family

ID=16733729

Family Applications (1)

Application Number Title Priority Date Filing Date
JP03219327A Expired - Fee Related JP3122822B2 (en) 1991-08-06 1991-08-06 Spindle motor mounting structure

Country Status (1)

Country Link
JP (1) JP3122822B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0518277U (en) * 1991-08-23 1993-03-05 株式会社三協精機製作所 Magnetic disk drive

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0518277U (en) * 1991-08-23 1993-03-05 株式会社三協精機製作所 Magnetic disk drive

Also Published As

Publication number Publication date
JP3122822B2 (en) 2001-01-09

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