JPH0581523U - Double-row angular contact ball bearing and hard disk drive using the same - Google Patents

Double-row angular contact ball bearing and hard disk drive using the same

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Publication number
JPH0581523U
JPH0581523U JP2927692U JP2927692U JPH0581523U JP H0581523 U JPH0581523 U JP H0581523U JP 2927692 U JP2927692 U JP 2927692U JP 2927692 U JP2927692 U JP 2927692U JP H0581523 U JPH0581523 U JP H0581523U
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JP
Japan
Prior art keywords
ball
outer ring
inner ring
row
double
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
JP2927692U
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Japanese (ja)
Other versions
JP2566504Y2 (en
Inventor
俊男 飯山
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.)
Origin Electric Co Ltd
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Origin Electric Co Ltd
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Publication date
Application filed by Origin Electric Co Ltd filed Critical Origin Electric Co Ltd
Priority to JP1992029276U priority Critical patent/JP2566504Y2/en
Publication of JPH0581523U publication Critical patent/JPH0581523U/en
Application granted granted Critical
Publication of JP2566504Y2 publication Critical patent/JP2566504Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/50—Other types of ball or roller bearings
    • F16C19/505—Other types of ball or roller bearings with the diameter of the rolling elements of one row differing from the diameter of those of another row
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/70—Diameters; Radii
    • F16C2240/80—Pitch circle diameters [PCD]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2370/00—Apparatus relating to physics, e.g. instruments
    • F16C2370/12—Hard disk drives or the like

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

(57)【要約】 （修正有） 【目的】 製作し易い安価な複列アンギュラ玉軸受を得
ること。 【構成】 内輪１と外輪２間に配列された複数のボール
３，４列とこれらを保持するリティーナ５，６とを備え
てなる複列アンギュラ玉軸受において，一方のボール列
が位置する内輪１の外壁と外輪２の内壁間の間隔に比べ
て，他方のボール列が位置する内輪１の外壁と外輪２の
内壁間の間隔を大きく形成し，その間隔の大きい側の内
輪外面又は外輪内面に部材９を付加し固着して，他方の
ボール列が外輪２または内輪１と部材９間で転動するよ
うになっている。 (57) [Summary] (Modified) [Purpose] To obtain an inexpensive double-row angular contact ball bearing that is easy to manufacture. [Structure] In a double-row angular contact ball bearing comprising a plurality of rows of balls 3 and 4 arranged between an inner ring 1 and an outer ring 2 and retainers 5 and 6 holding these, an inner ring 1 in which one ball row is located The outer wall of the inner ring 1 where the other ball row is located and the inner wall of the outer ring 2 are formed to have a larger space than the space between the outer wall of the outer ring and the inner wall of the outer ring 2. The member 9 is added and fixed so that the other ball row rolls between the outer ring 2 or the inner ring 1 and the member 9.

Description

【考案の詳細な説明】[Detailed description of the device] 【産業上の利用分野】[Industrial applications]

本考案は，ハードディスクドライブ装置におけるアーム軸受，スピンドル軸受 などに用いるのに好適な複列アンギュラ玉軸受に関する。 The present invention relates to a double-row angular contact ball bearing suitable for use as an arm bearing, a spindle bearing, etc. in a hard disk drive device.

【従来の技術】[Prior Art]

複列アンギュラ玉軸受は，２個の単列アンギュラ玉軸受を背面組合わせ，又は 正面組合わせにしておいて，内輪と外輪それぞれを一体化したものと同じ構造で あり，スラスト荷重とラジアル荷重との合成荷重を受けるのに適している。２個 の単列アンギュラ玉軸受を組み合わせた組合わせアンギュラ玉軸受よりも軸受幅 を小さくできるが，一般的に単列アンギュラ玉軸受よりも精度が低いので使用範 囲は限られている。 図７により従来の複列アンギュラ玉軸受について具体的に説明すると，内輪１ はその外周に２列の軌道溝１Ａ，１Ｂを有し，外輪２はその内周に２列の軌道溝 ２Ａ，２Ｂを有する。これら内輪１と外輪２との間には一方のボール列を構成す る複数のボール３，他方のボール列を構成する複数のボール４，およびこれらボ ール列をそれぞれ保持するクラウン型リティーナ５，６が備えられ，それら双方 の側面にはシールド体７，８が設けられている。そしてこれら軌道溝１Ａと１Ｂ ，軌道溝２Ａと２Ｂは，組み立てられるとき内，外輪１，２とボール３，４との 間に予圧を掛けた状態に置かれ，所望の接触角θが形成されるように設計され， 形成されている。 このような複列アンギュラ玉軸受は，組上がり後にラジアルすきま，アキシア ルすきまを無くし，また回転を円滑にするために０．５〜２μｍ（型式により異 なる）のマイナスすきま状態にする必要がある。そのためには，内輪と外輪の軌 道溝の径と間隔をサブミクロンで測定し，組み合わせて組立を行う必要がある。 しかし，このような複列アンギュラ玉軸受で高精度で比較的安価のものがあれ ば，ハードディスクドライブ装置におけるアーム軸受，スピンドル軸受などに用 いるのに好適である。 The double-row angular contact ball bearing has the same structure as two single-row angular contact ball bearings with either the rear or front combination and the inner ring and outer ring integrated together. Suitable for receiving the combined load of. Although the bearing width can be made smaller than the combination of two single-row angular contact ball bearings, it is generally less accurate than single-row angular contact ball bearings, so its range of use is limited. The conventional double-row angular contact ball bearing will be described in detail with reference to FIG. 7. The inner ring 1 has two rows of raceway grooves 1A and 1B on its outer circumference, and the outer ring 2 has two rows of raceway grooves 2A and 2B on its inner circumference. Have. Between the inner ring 1 and the outer ring 2, a plurality of balls forming one ball row 3, a plurality of balls 4 forming the other ball row, and a crown type retainer 5 respectively holding these ball rows. , 6 are provided, and shield bodies 7, 8 are provided on the sides of both of them. When these raceway grooves 1A and 1B and raceway grooves 2A and 2B are assembled, they are placed under a preload between the inner and outer races 1 and 2 and balls 3 and 4 to form a desired contact angle θ. Designed and formed to Such double-row angular contact ball bearings need to have a radial clearance of 0.5 to 2 μm (depending on the model) in order to eliminate radial and axial clearances after assembly and to ensure smooth rotation. . For that purpose, it is necessary to measure the diameter and spacing of the track grooves of the inner ring and the outer ring in submicron, and assemble them in combination. However, if such a double-row angular contact ball bearing has high accuracy and is relatively inexpensive, it is suitable for use in arm bearings, spindle bearings, etc. in hard disk drive devices.

【考案が解決しようとする課題】[Problems to be solved by the device]

しかしながら，このような従来の複列アンギュラ玉軸受にあっては，それぞれ 単体の内輪と外輪に各々２列の軌道溝１Ａと１Ｂ，軌道溝２Ａと２Ｂを加工し， 各軌道溝１Ａと１Ｂ，軌道溝２Ａと２Ｂの寸法測定し，最初からボール３，４と 十分にマッチングさせて組み立てる構造になっていたため，それぞれのボール列 に所定の予圧を加えた状態に維持して組み立てるには，内輪１の２列の軌道溝１ Ａ，１Ｂの溝径と深さ，および外輪２の２列の軌道溝２Ａ，２Ｂの溝径と深さと ２列の軌道溝１Ａ，１Ｂとの位置関係など総合的にサブミクロンオーダーの精度 が要求されるため，極めて高い測定精度とマッチング精度と組立精度が必要であ り，コストが非常に高いものとなる。 このような非常に高価な複列アンギュラ玉軸受では，幾ら精度が高くてもハー ドディスクドライブ装置におけるアーム軸受，スピンドル軸受などに採用し難い という問題があった。 本考案は，製作し易い安価な複列アンギュラ玉軸受を得ることを目的としてい る。 However, in such a conventional double-row angular contact ball bearing, two rows of raceway grooves 1A and 1B and two raceway grooves 2A and 2B are machined in a single inner ring and outer ring, respectively, and each raceway groove 1A and 1B, The dimensions of the raceway grooves 2A and 2B were measured, and from the beginning, the structure was such that the balls 3 and 4 were sufficiently matched and assembled, so in order to assemble while maintaining a prescribed preload on each ball row, the inner ring The groove diameters and depths of the two rows of raceway grooves 1A and 1B, the groove diameters and depths of the two rows of raceway grooves 2A and 2B of the outer ring 2, and the positional relationship between the two rows of raceway grooves 1A and 1B Since submicron-order accuracy is required, extremely high measurement accuracy, matching accuracy, and assembly accuracy are required, resulting in extremely high costs. Such an extremely expensive double-row angular contact ball bearing has the problem that it is difficult to use it for arm bearings, spindle bearings, etc. in hard disk drive devices, no matter how accurate it is. The purpose of the present invention is to obtain an inexpensive double-row angular contact ball bearing that is easy to manufacture.

【課題を解決するための手段】[Means for Solving the Problems]

本考案に係る複列アンギュラ玉軸受は，内輪と外輪間に複数のボール列を備え た複列アンギュラ玉軸受において，一方のボール列が位置する内輪の外壁と外輪 の内壁間に内輪部材又は外輪部材を付加し固着して，その一方のボール列が前記 外輪又は内輪と，前記内輪部材又は外輪部材間で転動するようにしたものである 。 The double-row angular ball bearing according to the present invention is a double-row angular ball bearing having a plurality of ball rows between an inner ring and an outer ring. A member is added and fixed so that one of the ball rows rolls between the outer ring or the inner ring and the inner ring member or the outer ring member.

【実施例】【Example】

図１に従って本考案に係る複列アンギュラ玉軸受の一実施例について説明を行 う。 図７に示した参照記号と同一の記号は対応する部材を示すものとする。 内輪１，外輪２は従来のものと同様に一方のボール列を構成するボール３を転 動させるための軌道溝１Ａ，２Ａを備えるが，内輪１は従来の軌道溝１Ｂに相当 する軌道溝は持っておらず，またボール３と同一直径をもつボール４が位置する 外輪２の内面は削られてボール３の位置する部分に対し内径の大きな大内径面２ Ｘが形成されており，外輪２のその大内径面２Ｘと内輪１の外面間の間隔は広く なっている。この実施例ではその間隔はボール４の直径より大きい。そして外輪 ２のその部分の内面には従来の軌道溝２Ｂに対応する軌道溝２Ｂ’を備える。内 輪部材９は内輪１の外径より若干大きな内径を有する円筒状のものであり，その 一方の外面は軌道溝９Ｂを与えるように欠削，研磨されている。軌道溝９Ｂは従 来例の軌道溝１Ｂに対応するものである。 この内輪部材９は，ボール４などが図示のとおり配置された状態で内輪１の外 面に装着され，さらに内輪部材９を押し込んで予圧した状態で接着される。この とき接着材は内輪部材９の内面または内輪１の外面に予め塗布しておけば良い。 内輪部材９の位置は，接触角θがボール３側の接触角と等しくなる箇所で固定さ れる。 このように内輪部材９を後から押し込むので，ガタが全く無い，つまり皆無で あり，かつ内輪部材９を替えるだけで接触角θを容易に調整できる複列アンギュ ラ玉軸受を得ることができる。 次に図２は本考案に係る複列アンギュラ玉軸受の他の実施例を示す図であって ，外輪２におけるボール４側の大内径面２Ｘに環状の外輪部材１０が固着されて いる。外輪部材１０は，外輪２の大内径面２Ｘの径より若干小さな外径をもつ環 状のものであり，好ましくは外輪２と同一の材質からなる。外輪部材１０のボー ル４と接触する箇所には，前記実施例における外輪２の軌道溝２Ｂ’に対応する 軌道溝１０Ｂが備えられる。 また，ボール３と４間にはこれらに接触することがないよう，板バネのような バネ体１１が備えられ，内輪１と外輪２間に予圧を与える。したがって，外輪部 材１０は，内輪１と外輪２間に定圧予圧を与えた状態で，外輪２の大内径面２Ｘ に接着剤で固着されることになる。 次に図３に示す本考案の他の実施例に係る複列アンギュラ玉軸受は，内輪１に おけるボール４の位置する内輪１の外周面側を欠削・除去して外径を小さくした 小外径面１Ｙに内輪部材９を固着させ，このときバネ体１１を内輪１と内輪部材 ９とに係合させて，内輪１に予圧を与える。つまり，内輪１に予圧を与えながら ，内輪部材９は内輪１の小外径面１Ｙに接着され，固着される。 以上の各実施例では複数のボール列のボール３，４が等しかったが，次にボー ル３，４の径が異なる場合の実施例について述べる。 図４において，一方のボール列の各ボール３の直径は他方のボール列の各ボー ル４の直径よりも小さい。内輪１の外面にはボール３，４にそれぞれ適した軌道 溝１Ａ，１Ｂが形成されており，外輪２の内面にはボール４に適した軌道溝２Ｂ が形成されている。小径のボール３が位置する箇所の外輪２の内面に外輪部材１ ０が後から押し込まれ，固着される。外輪部材１０は図２で説明したものと同様 なものであり，その内面にボール３に適した軌道溝１０Ａを備える。 次に図５に示す本考案の他の実施例に係る複列アンギュラ玉軸受は，小径のボ ール３が位置する側の内輪１の外面に内輪部材９を固着したものである。内輪１ の外面にはボール３に適した軌道溝９Ａが形成されている。 次に図６は，以上説明したような複列アンギュラ玉軸受を用いたハードディス ク駆動装置の一部分を示している。 同図において，２０は以上説明したような複列アンギュラ玉軸受のいずれかで あり，これはその内輪を通してネジ２１によって基板２２に固定される。複列ア ンギュラ玉軸受の２０の外輪には，先端にヘッド２３を備えたスイングアーム２ ４が固定されており，スイングアーム２４の反対側，つまりヘッド２３と反対の 側にコイル２５が備えられている。そのコイル２５と対向する基板２２の位置に 磁石２６が取り付けられている。なお，２７はディスクである。 このような複列アンギュラ玉軸受を用いたハードディスク駆動装置は，精密な 駆動が行えると共に，経済面で有利である。 以上述べた複列アンギュラ玉軸受の実施例において，一方のボール列について は単列アンギュラ玉軸受を組み立てる方法と同様に組立て，他方のボール列につ いてはボールの入ったリティーナを組み込むため，構造上，回転に与える影響の 少ないリボン型のリティーナを用いることが出来る。 An embodiment of a double-row angular contact ball bearing according to the present invention will be described with reference to FIG. The same symbols as the reference symbols shown in FIG. 7 indicate corresponding members. The inner ring 1 and the outer ring 2 are provided with raceway grooves 1A and 2A for rolling the balls 3 forming one ball row, similarly to the conventional one, but the inner race 1 has a raceway groove corresponding to the conventional raceway groove 1B. The inner surface of the outer ring 2 on which the ball 4 having the same diameter as that of the ball 3 does not have is scraped to form a large inner diameter surface 2 X having a large inner diameter with respect to the portion where the ball 3 is located. The distance between the large inner diameter surface 2X of the inner ring 1 and the outer surface of the inner ring 1 is wide. In this embodiment the spacing is larger than the diameter of the balls 4. A raceway groove 2B 'corresponding to the conventional raceway groove 2B is provided on the inner surface of that portion of the outer ring 2. The inner ring member 9 is a cylindrical member having an inner diameter slightly larger than the outer diameter of the inner ring 1, and one outer surface of the inner ring member 9 is cut and polished to provide a raceway groove 9B. The raceway groove 9B corresponds to the conventional raceway groove 1B. The inner ring member 9 is attached to the outer surface of the inner ring 1 with the balls 4 and the like arranged as shown in the figure, and is further bonded by pushing the inner ring member 9 and pre-pressing it. At this time, the adhesive may be applied to the inner surface of the inner ring member 9 or the outer surface of the inner ring 1 in advance. The position of the inner ring member 9 is fixed at a position where the contact angle θ becomes equal to the contact angle on the ball 3 side. Since the inner ring member 9 is pushed in from the rear in this way, there is no play, that is, there is no backlash, and it is possible to obtain a double-row angular contact ball bearing in which the contact angle θ can be easily adjusted simply by changing the inner ring member 9. Next, FIG. 2 is a view showing another embodiment of the double-row angular contact ball bearing according to the present invention. An annular outer ring member 10 is fixed to a large inner diameter surface 2X of the outer ring 2 on the ball 4 side. The outer ring member 10 is an annular member having an outer diameter slightly smaller than the diameter of the large inner diameter surface 2X of the outer ring 2, and is preferably made of the same material as the outer ring 2. A portion of the outer ring member 10 that contacts the ball 4 is provided with a raceway groove 10B corresponding to the raceway groove 2B 'of the outer ring 2 in the above embodiment. A spring body 11 such as a leaf spring is provided between the balls 3 and 4 so as not to come into contact with them, and a preload is applied between the inner ring 1 and the outer ring 2. Therefore, the outer ring member 10 is fixed to the large inner diameter surface 2X of the outer ring 2 with an adhesive while a constant preload is applied between the inner ring 1 and the outer ring 2. Next, a double-row angular contact ball bearing according to another embodiment of the present invention shown in FIG. 3 has a small outer diameter by cutting and removing the outer peripheral surface side of the inner ring 1 where the balls 4 of the inner ring 1 are located. The inner ring member 9 is fixed to the outer diameter surface 1Y, and the spring body 11 is engaged with the inner ring 1 and the inner ring member 9 at this time to apply a preload to the inner ring 1. That is, the inner ring member 9 is adhered and fixed to the small outer diameter surface 1Y of the inner ring 1 while preloading the inner ring 1. In each of the above embodiments, the balls 3 and 4 of the plurality of ball rows are equal, but next, an embodiment in which the diameters of the balls 3 and 4 are different will be described. In FIG. 4, the diameter of each ball 3 in one ball row is smaller than the diameter of each ball 4 in the other ball row. Track grooves 1A and 1B suitable for the balls 3 and 4 are formed on the outer surface of the inner ring 1, and track grooves 2B suitable to the ball 4 are formed on the inner surface of the outer ring 2. The outer ring member 10 is pushed in and fixed to the inner surface of the outer ring 2 where the small-diameter balls 3 are located from the rear. The outer ring member 10 is similar to that described with reference to FIG. 2, and has raceway grooves 10A suitable for the balls 3 on its inner surface. Next, a double row angular contact ball bearing according to another embodiment of the present invention shown in FIG. 5 has an inner ring member 9 fixed to the outer surface of the inner ring 1 on the side where the small diameter ball 3 is located. A raceway groove 9A suitable for the ball 3 is formed on the outer surface of the inner ring 1. Next, FIG. 6 shows a part of a hard disk drive device using the double-row angular contact ball bearing as described above. In the figure, 20 is one of the double-row angular contact ball bearings described above, which is fixed to the base plate 22 by screws 21 through its inner ring. A swing arm 24 having a head 23 at the tip is fixed to 20 outer rings of the double-row angular contact ball bearing, and a coil 25 is provided at the opposite side of the swing arm 24, that is, at the side opposite to the head 23. ing. A magnet 26 is attached to the substrate 22 at a position facing the coil 25. In addition, 27 is a disk. A hard disk drive that uses such double-row angular contact ball bearings can drive precisely and is economically advantageous. In the above-described embodiment of the double row angular contact ball bearing, one ball row is assembled in the same manner as the single row angular contact ball bearing is assembled, and the other ball row is equipped with a retainer containing balls. In addition, a ribbon-type retainer that has little effect on rotation can be used.

【考案の効果】[Effect of the device]

以上述べたように本考案によれば，内輪と外輪との間に後からそれら内輪又は 外輪の一部分として機能する部材を設ける構造であるので，従来のものに比べて ，マッチング精度は１／６程度，計測の精度は従来のサブミクロンオーダーに比 べてミクロンオーダーでよく，また組立上の制限から従来はクラウン型のリティ ーナを用いざるを得なかったが，本考案では回転に与える影響の少ないリボン型 のものを用いることができるので，この面でも高精度の回転を得る上で有利であ る。したがって，本考案に係る複列アンギュラ玉軸受は従来のものに比べて製作 が非常に容易であり，コストを大幅に低減できる。 As described above, according to the present invention, since the member that functions as a part of the inner ring or the outer ring is provided between the inner ring and the outer ring later, the matching accuracy is 1/6 that of the conventional one. The degree and accuracy of measurement may be on the order of microns, compared to the conventional sub-micron order, and the crown type retainer had to be used in the past due to assembly restrictions, but this invention has an effect on rotation. Since a ribbon type with less power consumption can be used, this aspect is also advantageous in obtaining highly accurate rotation. Therefore, the double-row angular contact ball bearing according to the present invention is much easier to manufacture than the conventional one, and the cost can be greatly reduced.

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

【図１】本考案の一実施例を説明するための図である。FIG. 1 is a diagram illustrating an embodiment of the present invention.

【図２】本考案の他の実施例を説明するための図であ
る。FIG. 2 is a view for explaining another embodiment of the present invention.

【図３】本考案の他の実施例を説明するための図であ
る。FIG. 3 is a view for explaining another embodiment of the present invention.

【図４】本考案の他の実施例を説明するための図であ
る。FIG. 4 is a view for explaining another embodiment of the present invention.

【図５】本考案の他の実施例を説明するための図であ
る。FIG. 5 is a view for explaining another embodiment of the present invention.

【図６】本考案に係る複列アンギュラ玉軸受を用いたハ
ードディスク駆動装置に一例を説明するための図であ
る。FIG. 6 is a diagram for explaining an example of a hard disk drive device using a double-row angular contact ball bearing according to the present invention.

【図７】従来例を説明するための図である。FIG. 7 is a diagram for explaining a conventional example.

【符号の説明】[Explanation of symbols]

１・・・・・・・・・・内輪 １Ａ，１Ｂ・・・・・・軌道溝 ２・・・・・・・・・・外輪 ２Ａ，２Ｂ・・・・・・軌道溝 ３，４・・・・・・・・ボール ５，６・・・・・・・・リティーナ ７，８・・・・・・・・シールド体 ９・・・・・・・・・・内輪部材 １０・・・・・・・・・・外輪部材 １１・・・・・・・・・・バネ体 1 ・ ・ ・ ・ ・ ・ Inner ring 1A, 1B ・ ・ ・ ・ ・ ・ Track groove 2 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Outer ring 2A, 2B ・ ・ ・ ・ Track groove 3, 4 ・・ ・ ・ ・ ・ ・ ・ Ball 5,6 ・ ・ ・ ・ ・ ・ Retina 7,8 ・ ・ ・ ・ ・ ・ Shield 9 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Inner ring member 10 ・ ・ ・・ ・ ・ ・ ・ ・ ・ ・ ・ Outer ring member 11 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Spring body

Claims (5)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】 内輪と外輪間にボール径の等しいボール
を配列してなる複数のボール列とこれらを保持するリテ
ィーナとを備えた複列アンギュラ玉軸受において， 一方のボール列が位置する内輪の外壁と外輪の内壁間の
間隔に比べて，他方のボール列が位置する内輪の外壁と
外輪の内壁間の間隔を大きく形成し，その間隔の大きい
側の内輪外面に内輪部材を付加し固着して，前記他方の
ボール列が前記外輪と前記内輪部材間で転動するように
したことを特徴とする複列アンギュラ玉軸受。1. A double-row angular contact ball bearing comprising a plurality of ball rows formed by arranging balls having the same ball diameter between an inner ring and an outer ring and a retainer holding these balls, wherein The gap between the outer wall of the inner ring where the other ball row is located and the inner wall of the outer ring is made larger than the gap between the outer wall and the inner wall of the outer ring, and the inner ring member is added and fixed to the outer surface of the inner ring on the side with the larger gap. The double row angular contact ball bearing is characterized in that the other ball row rolls between the outer ring and the inner ring member. 【請求項２】 内輪と外輪間にボール径の等しいボール
を配列してなる複数のボール列とこれらを保持するリテ
ィーナとを備えた複列アンギュラ玉軸受において， 一方のボール列が位置する内輪の外壁と外輪の内壁間の
間隔に比べて，他方のボール列が位置する内輪の外壁と
外輪の内壁間の間隔を大きく形成し，その間隔の大きい
側の外輪内面に外輪部材を付加し固着して，前記他方の
ボール列が前記内輪と前記外輪部材間で転動するように
したことを特徴とする複列アンギュラ玉軸受。2. A double-row angular contact ball bearing comprising a plurality of ball rows in which balls having the same ball diameter are arranged between an inner ring and an outer ring, and a retainer holding these balls, and The gap between the outer wall of the inner ring where the other ball row is located and the inner wall of the outer ring is made larger than the gap between the outer wall and the inner wall of the outer ring, and the outer ring member is attached and fixed to the inner surface of the outer ring on the side with the larger gap. The double row angular contact ball bearing is characterized in that the other ball row rolls between the inner ring and the outer ring member. 【請求項３】 内輪と外輪間に複数のボール列とこれら
を保持するリティーナとを備えてなる複列アンギュラ玉
軸受において， 一方のボール列のボール径は他方のボール列のボール径
に比べて小さくなっており，そのボール径の小さいボー
ル列に対応する外輪の内壁面に外輪部材を付加し固着し
て，前記他方のボール列が前記内輪と前記外輪部材間で
転動するようにしたことを特徴とする複列アンギュラ玉
軸受。3. A double row angular contact ball bearing comprising a plurality of ball rows between an inner ring and an outer ring and a retainer for holding them, wherein the ball diameter of one ball row is larger than the ball diameter of the other ball row. The outer ring member is attached to and fixed to the inner wall surface of the outer ring corresponding to the ball train having a smaller ball diameter, and the other ball train rolls between the inner ring and the outer ring member. A double-row angular contact ball bearing. 【請求項４】 内輪と外輪間に複数のボール列とこれら
を保持するリティーナとを備えてなる複列アンギュラ玉
軸受において， 一方のボール列のボール径は他方のボール列のボール径
に比べて小さくなっており，そのボール径の小さいボー
ル列に対応する内輪の外壁面に内輪部材を付加し固着し
て，前記他方のボール列が前記外輪と前記内輪部材間で
転動するようにしたことを特徴とする複列アンギュラ玉
軸受。4. A double-row angular contact ball bearing comprising a plurality of ball rows between an inner ring and an outer ring and a retainer holding the ball rows, wherein the ball diameter of one ball row is larger than the ball diameter of the other ball row. The inner ring member is attached and fixed to the outer wall surface of the inner ring corresponding to the ball train having a smaller ball diameter, so that the other ball train rolls between the outer ring and the inner ring member. A double-row angular contact ball bearing. 【請求項５】 内輪と外輪間に複数のボール列とこれら
を保持するリティーナとを備えると共に，前記内輪と外
輪間において一方のボール列に一方の軌道溝を与えるよ
う接触する部材を備えてなるてなる複列アンギュラ玉軸
受の外輪に，先端にヘッドを備えたスイングアームを固
定したことを特徴とするハードディスク駆動装置。5. A plurality of ball rows and a retainer for holding them are provided between the inner ring and the outer ring, and a member is provided between the inner ring and the outer ring to contact one ball row so as to provide one raceway groove. A hard disk drive characterized in that a swing arm having a head at the tip is fixed to the outer ring of a double-row angular contact ball bearing.
JP1992029276U 1992-04-06 1992-04-06 Double row angular contact ball bearing and hard disk drive using the same Expired - Fee Related JP2566504Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1992029276U JP2566504Y2 (en) 1992-04-06 1992-04-06 Double row angular contact ball bearing and hard disk drive using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1992029276U JP2566504Y2 (en) 1992-04-06 1992-04-06 Double row angular contact ball bearing and hard disk drive using the same

Publications (2)

Publication Number Publication Date
JPH0581523U true JPH0581523U (en) 1993-11-05
JP2566504Y2 JP2566504Y2 (en) 1998-03-30

Family

ID=12271758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1992029276U Expired - Fee Related JP2566504Y2 (en) 1992-04-06 1992-04-06 Double row angular contact ball bearing and hard disk drive using the same

Country Status (1)

Country Link
JP (1) JP2566504Y2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002155961A (en) * 2000-11-20 2002-05-31 Nsk Ltd Method of manufacturing bearing device
WO2007138740A1 (en) * 2006-05-26 2007-12-06 Ntn Corporation Bearing device for wheel
CN114754081A (en) * 2022-05-20 2022-07-15 瓦房店轴承集团国家轴承工程技术研究中心有限公司 Double-row angular contact ball bearing assembly method and tool thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6359770U (en) * 1986-10-09 1988-04-21
JPH0297183U (en) * 1989-01-18 1990-08-02

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6359770U (en) * 1986-10-09 1988-04-21
JPH0297183U (en) * 1989-01-18 1990-08-02

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002155961A (en) * 2000-11-20 2002-05-31 Nsk Ltd Method of manufacturing bearing device
WO2007138740A1 (en) * 2006-05-26 2007-12-06 Ntn Corporation Bearing device for wheel
CN114754081A (en) * 2022-05-20 2022-07-15 瓦房店轴承集团国家轴承工程技术研究中心有限公司 Double-row angular contact ball bearing assembly method and tool thereof
CN114754081B (en) * 2022-05-20 2023-07-25 瓦房店轴承集团国家轴承工程技术研究中心有限公司 Double-row angular contact ball bearing assembly method and tooling thereof

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