JP5240659B2 - Motor and recording disk drive device - Google Patents

Motor and recording disk drive device Download PDF

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JP5240659B2
JP5240659B2 JP2008296157A JP2008296157A JP5240659B2 JP 5240659 B2 JP5240659 B2 JP 5240659B2 JP 2008296157 A JP2008296157 A JP 2008296157A JP 2008296157 A JP2008296157 A JP 2008296157A JP 5240659 B2 JP5240659 B2 JP 5240659B2
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stator
motor
recording disk
central axis
connector member
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JP2010124609A (en
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正 長谷川
由和 臼井
友紀 内堀
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Nidec America Corp
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Nidec Corp
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Description

本発明は、電動式のモータ、および、モータを備える記録ディスク駆動装置に関する。   The present invention relates to an electric motor and a recording disk driving device including the motor.

ハードディスク駆動装置等の記録ディスク駆動装置では、記録ディスクを回転駆動するスピンドルモータ（以下、単に「モータ」という。）がハウジング内に設けられ、モータを制御する回路基板および回路基板とモータのステータとを接続するコネクタ部材がハウジングの外部に設けられる。モータでは、ハウジングの貫通穴を介してハウジングの外部へと引き出されたステータの導線がコネクタ部材の配線に半田付けされる。   In a recording disk drive device such as a hard disk drive device, a spindle motor (hereinafter simply referred to as “motor”) that rotates the recording disk is provided in a housing, and a circuit board that controls the motor, a circuit board, a stator of the motor, Is connected to the outside of the housing. In the motor, the lead wire of the stator drawn out of the housing through the through hole of the housing is soldered to the wiring of the connector member.

ところで、特許文献１では、回路基板と電子部品とを接続するコネクタピンが開示されており、コネクタピンには、回路基板および電子部品がそれぞれ半田付けされる半田付け領域に金メッキ層が形成され、２つの半田付け領域の間の非半田付け領域にニッケルと金との混合層が形成される。非半田付け領域の濡れ性は半田付け領域の濡れ性よりも低いため、コネクタピンと電子部品との半田付けの際に、半田の広がりが非半田付け領域により制限され、半田が回路基板へと広がることによる回路基板のパターンの短絡が防止される。特許文献２に開示されるコネクタ端子においても、プリント配線板を半田付けする端子部の表面に金メッキが施されるとともに、端子部と端子部とは反対側の端部との間の部位の表面にニッケルメッキが施されることにより、端子部に付与された半田の広がりが抑えられる。
特開２００４−２７７８３７号公報 特開２００４−１５２７５０号公報 By the way, in patent document 1, the connector pin which connects a circuit board and an electronic component is disclosed, and a gold plating layer is formed in the soldering area | region where a circuit board and an electronic component are each soldered to a connector pin, A mixed layer of nickel and gold is formed in the non-soldering area between the two soldering areas. Since the wettability of the non-soldering area is lower than the wettability of the soldering area, the solder spread is limited by the non-soldering area when soldering the connector pin and the electronic component, and the solder spreads to the circuit board. This prevents short circuit of the circuit board pattern. Also in the connector terminal disclosed in Patent Document 2, the surface of the terminal portion to which the printed wiring board is soldered is plated with gold, and the surface of the portion between the terminal portion and the end opposite to the terminal portion By applying nickel plating to the solder, the spread of the solder applied to the terminal portion is suppressed.
JP 2004-277837 A JP 2004-152750 A

ところで、ハウジングの外側に形成される凹部にコネクタ部材が取り付けられる構造のモータでは、凹部内に形成された貫通穴を介して引き出された導線とコネクタ部材とが半田により接合される際に、導線の周囲の半田が盛り上がることにより接合箇所の高さ不良が発生し、導線を切断した後の端部および半田が記録ディスク駆動装置の周囲の部品に接触してしまうおそれがある。また、この問題を解決するために、例えば、導線の端部を凹部の内壁に向けて折り曲げた状態で半田付けを行うと、導線との接合箇所に濡れ性が高い金メッキが施された従来のコネクタ部材では、半田が凹部の内壁の近くまで広がり、ハウジングを傷つけることなく導線を切断することが困難となる。   By the way, in a motor having a structure in which a connector member is attached to a recess formed on the outside of the housing, when the conductor drawn out through the through hole formed in the recess and the connector member are joined by solder, the conductor When the solder around the swells up, a defective height of the joining portion occurs, and there is a possibility that the end part and the solder after cutting the lead wire come into contact with the parts around the recording disk drive device. Further, in order to solve this problem, for example, when soldering is performed in a state in which the end portion of the conducting wire is bent toward the inner wall of the recess, a conventional wet plating with high wettability is applied to the joining portion with the conducting wire. In the connector member, the solder spreads to the vicinity of the inner wall of the recess, and it is difficult to cut the conductive wire without damaging the housing.

本発明は、上記課題に鑑みなされたものであり、ステータの導線がモータの中心軸に向かう状態でコネクタ部材の配線部に半田付けされる際に、半田が配線部の先端部まで広がることを防止して半田付け後にベース部を傷つけることなく導線を容易に切断することを目的としている。   The present invention has been made in view of the above-described problems, and when the stator conductor is soldered to the wiring portion of the connector member in a state toward the central axis of the motor, the solder spreads to the tip of the wiring portion. The purpose is to prevent and easily cut the conductor without damaging the base part after soldering.

請求項１に記載の発明は、電動式のモータであって、ステータ部と、中心軸を中心として前記ステータ部に対して回転可能に支持されるロータ部とを備え、前記ステータ部が、ステータと、前記ステータが取り付けられるベース部と、前記ベース部の前記ステータとは反対側に取り付けられ、前記ステータの導線と回路基板とを接続するとともに互いに略平行に伸びる複数の配線部を有するコネクタ部材とを備え、前記ベース部が、前記中心軸が中央に位置する中央領域と、前記中央領域の周囲において前記中央領域よりも前記ステータ側に位置する周辺領域と、前記中央領域内から少なくとも前記中央領域と前記周辺領域との間の境界まで形成され、前記コネクタ部材の少なくとも一部が配置される凹部とを備え、前記凹部内に前記中心軸に平行な方向に貫通する貫通穴が設けられ、前記複数の配線部のそれぞれが、前記凹部の側壁に近接または当接する先端部であり、ニッケルメッキが施されたニッケルメッキ部と、前記ニッケルメッキ部から連続する金メッキが施された金メッキ部とを備え、前記金メッキ部が、前記貫通穴と前記中心軸に平行な方向において重なる穴状または切欠状であって前記貫通穴から引き出された前記導線の端部が挿入される挿入部を有し、前記挿入部に挿入された前記導線の前記端部が前記中心軸に向かう状態で前記金メッキ部に半田付けされている。   The invention according to claim 1 is an electric motor including a stator portion and a rotor portion that is rotatably supported with respect to the stator portion about a central axis, and the stator portion is a stator. And a base member to which the stator is attached, and a connector member that is attached to the opposite side of the base to the stator and that connects the lead wires of the stator and the circuit board, and has a plurality of wiring portions that extend substantially parallel to each other. And the base portion includes a central region in which the central axis is located in the center, a peripheral region located on the stator side with respect to the central region around the central region, and at least the center from within the central region A recess formed in a region between the region and the peripheral region, wherein at least a part of the connector member is disposed, and the central axis in the recess A through-hole penetrating in a parallel direction is provided, and each of the plurality of wiring portions is a tip portion that is close to or in contact with a side wall of the recess, and a nickel-plated nickel-plated portion and the nickel-plated portion A gold-plated portion provided with a continuous gold-plating, and the gold-plated portion is a hole shape or a notch shape that overlaps in the direction parallel to the through hole and the central axis, and the lead wire is drawn from the through hole. An end portion is inserted, and the end portion of the conducting wire inserted into the insertion portion is soldered to the gold plating portion in a state toward the central axis.

請求項２に記載の発明は、請求項１に記載のモータであって、前記導線の前記端部および前記端部を前記複数の配線部に固定する半田が、前記凹部内に位置する。   A second aspect of the present invention is the motor according to the first aspect, wherein the end portions of the conductive wires and the solder for fixing the end portions to the plurality of wiring portions are located in the recesses.

請求項３に記載の発明は、請求項１または２に記載のモータであって、前記導線の前記端部の先端が前記ニッケルメッキ部のエッジと前記側壁との間に位置する、または、前記エッジ上に位置する。   Invention of Claim 3 is a motor of Claim 1 or 2, Comprising: The front-end | tip of the said edge part of the said conducting wire is located between the edge of the said nickel plating part, and the said side wall, or the said Located on the edge.

請求項４に記載の発明は、記録ディスク駆動装置であって、記録ディスクを回転する請求項１ないし３のいずれかに記載のモータと、前記記録ディスクに対する情報の読み出しまたは書き込みを行うアクセス部と、前記モータおよび前記アクセス部を収容するハウジングとを備える。   The invention according to claim 4 is a recording disk drive device, wherein the motor according to any one of claims 1 to 3 that rotates the recording disk, and an access unit that reads or writes information on the recording disk; And a housing for housing the motor and the access portion.

本発明によれば、ステータの導線がコネクタ部材の配線部に半田付けされる際に、半田が配線部の先端部まで広がることが防止され、半田付け後にベース部を傷付けることなく導線を容易に切断することができる。   According to the present invention, when the conductor wire of the stator is soldered to the wiring portion of the connector member, it is possible to prevent the solder from spreading to the tip portion of the wiring portion, and to easily conduct the wire without damaging the base portion after soldering. Can be cut.

図１は本発明の一の実施の形態に係る電動式のスピンドルモータ１（以下、「モータ１」という。）を備える記録ディスク駆動装置６０の内部構成を示す縦断面図であり、中心軸Ｊ１の左右は互いに異なる方向からの断面を示している。記録ディスク駆動装置６０はいわゆるハードディスク駆動装置であり、情報を記録する円板状の記録ディスク６２、記録ディスク６２に対する情報の読み出しおよび書き込みを行うアクセス部６３、記録ディスク６２を保持して回転するモータ１、並びに、モータ１、記録ディスク６２およびアクセス部６３を内部空間６１０に収容するハウジング６１を備える。   FIG. 1 is a longitudinal sectional view showing an internal configuration of a recording disk drive device 60 including an electric spindle motor 1 (hereinafter referred to as “motor 1”) according to an embodiment of the present invention, and shows a central axis J1. The right and left of FIG. 2 indicate cross sections from different directions. The recording disk drive 60 is a so-called hard disk drive, and is a disk-shaped recording disk 62 for recording information, an access unit 63 for reading and writing information to the recording disk 62, and a motor that holds and rotates the recording disk 62. 1, and a housing 61 that accommodates the motor 1, the recording disk 62, and the access unit 63 in the internal space 610.

ハウジング６１は上部に開口を有するとともにモータ１およびアクセス部６３が内部の底部に取り付けられる無蓋箱状の第１ハウジング部材６１１、並びに、第１ハウジング部材６１１の開口を覆うことにより内部空間６１０を形成する板状の第２ハウジング部材６１２を備える。記録ディスク駆動装置６０では、第１ハウジング部材６１１に第２ハウジング部材６１２が接合されてハウジング６１が形成され、内部空間６１０は塵や埃が極度に少ない清浄な空間とされる。   The housing 61 has an opening at the top, and a cover-less box-shaped first housing member 611 to which the motor 1 and the access unit 63 are attached at the bottom, and an internal space 610 by covering the opening of the first housing member 611. A plate-shaped second housing member 612 is provided. In the recording disk driving device 60, the second housing member 612 is joined to the first housing member 611 to form the housing 61, and the internal space 610 is a clean space with extremely little dust and dirt.

記録ディスク６２は、モータ１の上側に載置されてクランパ６２１によりモータ１に固定される。アクセス部６３は、記録ディスク６２に近接して情報の読み出しおよび書き込みを磁気的に行うヘッド６３１、ヘッド６３１を支持するアーム６３２、並びに、アーム６３２を移動することによりヘッド６３１を記録ディスク６２およびモータ１に対して相対的に移動するヘッド移動機構６３３を有する。これらの構成により、ヘッド６３１は回転する記録ディスク６２に近接した状態で記録ディスク６２の所要の位置にアクセスし、情報の読み出しおよび書き込みを行う。   The recording disk 62 is placed on the upper side of the motor 1 and is fixed to the motor 1 by the clamper 621. The access unit 63 includes a head 631 that magnetically reads and writes information in the vicinity of the recording disk 62, an arm 632 that supports the head 631, and moves the arm 632 to move the head 631 to the recording disk 62 and the motor. 1 has a head moving mechanism 633 that moves relative to 1. With these configurations, the head 631 accesses a required position of the recording disk 62 in the state of being close to the rotating recording disk 62, and reads and writes information.

図２はモータ１の縦断面図である。モータ１はアウタロータ型のモータであり、固定組立体であるステータ部２および回転組立体であるロータ部３を備える。以下の説明では、モータ１の中心軸Ｊ１に沿ってロータ部３側を上側、ステータ部２側を下側として説明するが、中心軸Ｊ１は必ずしも重力方向と一致する必要はない。   FIG. 2 is a longitudinal sectional view of the motor 1. The motor 1 is an outer rotor type motor, and includes a stator portion 2 that is a fixed assembly and a rotor portion 3 that is a rotary assembly. In the following description, the rotor unit 3 side is described as the upper side and the stator unit 2 side is defined as the lower side along the central axis J1 of the motor 1, but the central axis J1 does not necessarily coincide with the direction of gravity.

ロータ部３は記録ディスク６２（図１参照）が固定される略円板状のロータハブ３１、ロータハブ３１の外周縁から下側（すなわち、ステータ部２側）に突出する略円筒状のヨーク３２、ヨーク３２の内周面に固定される多極着磁された界磁用磁石３３、中心軸Ｊ１を中心とする略円柱状であってロータハブ３１の中央から下側に突出するシャフト３４、および、シャフト３４の下端に取り付けられた略円板状のスラストプレート３５を備える。   The rotor unit 3 includes a substantially disc-shaped rotor hub 31 to which a recording disk 62 (see FIG. 1) is fixed, a substantially cylindrical yoke 32 protruding downward from the outer peripheral edge of the rotor hub 31 (that is, the stator unit 2 side), A multi-pole magnetized field magnet 33 fixed to the inner peripheral surface of the yoke 32, a substantially cylindrical shape centering on the central axis J1 and projecting downward from the center of the rotor hub 31, and A substantially disc-shaped thrust plate 35 attached to the lower end of the shaft 34 is provided.

ステータ部２は第１ハウジング部材６１１（図１参照）の一部であるベース部２１、ベース部２１の円筒状のホルダ２１１の内側に配置される有底略円筒状のスリーブユニット２２、ホルダ２１１の周囲に取り付けられたステータ２３、および、ベース部２１のステータ２３が取り付けられる面とは反対側の面（以下、「ベース面２１２」という。）に取り付けられたコネクタ部材４を備える。図２中に二点鎖線にて示すようにベース面２１２にはモータ１の制御を行う回路基板２４が取り付けられ、コネクタ部材４により回路基板２４とステータ２３とが電気的に接続される。   The stator portion 2 includes a base portion 21 which is a part of a first housing member 611 (see FIG. 1), a substantially cylindrical bottomed sleeve unit 22 disposed inside a cylindrical holder 211 of the base portion 21, and a holder 211. And a connector member 4 attached to a surface of the base portion 21 opposite to the surface to which the stator 23 is attached (hereinafter referred to as “base surface 212”). As shown by a two-dot chain line in FIG. 2, a circuit board 24 for controlling the motor 1 is attached to the base surface 212, and the circuit board 24 and the stator 23 are electrically connected by the connector member 4.

スリーブユニット２２は、ロータ部３のシャフト３４が挿入される略円筒状のスリーブ本体２２１、スリーブ本体２２１の外周面に固定された有底円筒状のスリーブハウジング２２２、および、スリーブ本体２２１の上側に配置される環状のシール部材２２３を備える。スリーブ本体２２１は多孔質部材であり、スリーブハウジング２２２およびシール部材２２３はスリーブ本体２２１に含浸された潤滑油を保持する役割を果たす。スリーブハウジング２２２の下部は、ベース部２１のホルダ２１１の内側に圧入にて固定される。   The sleeve unit 22 includes a substantially cylindrical sleeve body 221 into which the shaft 34 of the rotor unit 3 is inserted, a bottomed cylindrical sleeve housing 222 fixed to the outer peripheral surface of the sleeve body 221, and an upper side of the sleeve body 221. An annular seal member 223 is provided. The sleeve body 221 is a porous member, and the sleeve housing 222 and the seal member 223 serve to hold the lubricating oil impregnated in the sleeve body 221. The lower portion of the sleeve housing 222 is fixed by press fitting inside the holder 211 of the base portion 21.

ステータ２３は中心軸Ｊ１を中心とする環状であり、放射状に配置された複数のティース２３３を有するステータコア２３１、および、複数のティース２３３に導線を巻回することにより形成された複数のコイル２３２を備える。ステータ２３はロータ部３の界磁用磁石３３と中心軸Ｊ１に垂直な方向に対向し、ステータ２３と界磁用磁石３３との間にて中心軸Ｊ１を中心とする回転力（トルク）が発生する。   The stator 23 has an annular shape centered on the central axis J1, and includes a stator core 231 having a plurality of radially arranged teeth 233, and a plurality of coils 232 formed by winding conductive wires around the plurality of teeth 233. Prepare. The stator 23 opposes the field magnet 33 of the rotor unit 3 in a direction perpendicular to the central axis J1, and a rotational force (torque) centered on the central axis J1 is between the stator 23 and the field magnet 33. Occur.

モータ１では、スリーブユニット２２、シャフト３４および潤滑油により流体動圧軸受機構が形成され、ロータ部３（および記録ディスク６２（図１参照））は流体動圧軸受機構を介して中心軸Ｊ１を中心としてステータ部２に対して回転可能に支持される。   In the motor 1, a fluid dynamic pressure bearing mechanism is formed by the sleeve unit 22, the shaft 34, and the lubricating oil, and the rotor unit 3 (and the recording disk 62 (see FIG. 1)) moves the central axis J <b> 1 through the fluid dynamic pressure bearing mechanism. It is rotatably supported with respect to the stator part 2 as a center.

図３はベース部２１の底面図であり、コネクタ部材４を二点鎖線にて示している。図２および図３に示すように、ベース面２１２は中心軸Ｊ１が中央に位置する略円環状の中央領域２１２１、中央領域２１２１の周囲において中央領域２１２１よりも図２のステータ２３側に位置する周辺領域２１２２、および、ホルダ２１１（図２参照）の下端近傍から中央領域２１２１と周辺領域２１２２との境界まで中心軸Ｊ１を中心とする径方向に伸びる凹部２１２３を有する。凹部２１２３には中心軸Ｊ１に平行な方向に貫通する貫通穴２１３が設けられる。また、凹部２１２３にはコネクタ部材４の中心軸Ｊ１側の端部が配置され、図２に示すように、モータ１では、コネクタ部材４の全体がベース部２１の中央領域２１２１の表面よりも上側（すなわち、ステータ２３側）に位置する。   FIG. 3 is a bottom view of the base portion 21 and shows the connector member 4 with a two-dot chain line. As shown in FIGS. 2 and 3, the base surface 212 has a substantially annular central region 2121 in which the central axis J <b> 1 is located in the center, and is positioned closer to the stator 23 in FIG. 2 than the central region 2121 around the central region 2121. The peripheral region 2122 and a recess 2123 extending in the radial direction centering on the central axis J1 from the vicinity of the lower end of the holder 211 (see FIG. 2) to the boundary between the central region 2121 and the peripheral region 2122 are provided. The recess 2123 is provided with a through hole 213 penetrating in a direction parallel to the central axis J1. Further, the end portion of the connector member 4 on the central axis J1 side is disposed in the concave portion 2123. As shown in FIG. 2, in the motor 1, the entire connector member 4 is above the surface of the central region 2121 of the base portion 21. (Ie, on the stator 23 side).

図３に示すように、貫通穴２１３の中心軸Ｊ１を中心とする径方向（以下、単に「径方向」という。）における外方には径方向に対して垂直な方向に伸びる溝２１２３ａが設けられ、溝２１２３ａはコネクタ部材４をベース面２１２上に取り付ける際に用いられる接着剤の保持に利用される。なお、図２では溝２１２３ａの図示を省略している。   As shown in FIG. 3, a groove 2123a extending in a direction perpendicular to the radial direction is provided on the outer side in the radial direction (hereinafter simply referred to as “radial direction”) centering on the central axis J1 of the through hole 213. The groove 2123a is used for holding an adhesive used when the connector member 4 is mounted on the base surface 212. In FIG. 2, the groove 2123a is not shown.

図４および図５はコネクタ部材４の底面図および側面図である。図４および図５に示すように、コネクタ部材４は互いに略平行に伸びる３つの配線部４１、および、インサート成形により配線部４１の周囲に形成された樹脂成形部４２を有する。図４に示すように、樹脂成形部４２は図４における左側に位置する略板状の第１板状部４２１、および、第１板状部４２１よりも配線部４１の伸びる方向に垂直な方向の幅が小さい略板状の第２板状部４２２を有し、図５に示すように、第１板状部４２１と第２板状部４２２との間の部位は第２板状部４２２が第１板状部４２１よりも上方に位置する段差部とされる。   4 and 5 are a bottom view and a side view of the connector member 4. As shown in FIGS. 4 and 5, the connector member 4 has three wiring parts 41 extending substantially in parallel to each other, and a resin molding part 42 formed around the wiring part 41 by insert molding. As shown in FIG. 4, the resin molding portion 42 has a substantially plate-like first plate-like portion 421 located on the left side in FIG. 4 and a direction perpendicular to the direction in which the wiring portion 41 extends from the first plate-like portion 421. The second plate-like portion 422 having a substantially plate shape with a small width is provided. As shown in FIG. 5, the portion between the first plate-like portion 421 and the second plate-like portion 422 is the second plate-like portion 422. Is a step portion located above the first plate-like portion 421.

第１板状部４２１では先端が薄くされており、配線部４１の図５における左側の端部である第１接続端子４１１が下方に露出している。また、第１板状部４２１は上方に向かって突出する突出部４２１１を有し、図４および図５に示すように、突出部４２１１には突出部４２１１の伸びる方向に突出部４２１１を貫通する３つの穴部４２１１ａが設けられる。   The first plate-like portion 421 has a thin tip, and the first connection terminal 411 that is the left end of the wiring portion 41 in FIG. 5 is exposed downward. Further, the first plate-like portion 421 has a protruding portion 4211 protruding upward, and as shown in FIGS. 4 and 5, the protruding portion 4211 penetrates the protruding portion 4211 in the direction in which the protruding portion 4211 extends. Three holes 4211a are provided.

図６は配線部４１の第１接続端子４１１を拡大して示す図である。第１接続端子４１１は、第１接続端子４１１の先端部であってニッケルメッキが施されたニッケルメッキ部５１、および、ニッケルメッキ部５１から連続する金メッキが施された金メッキ部５２を有し、金メッキ部５２には穴状の部位（以下、「穴部４１１１」という。）が設けられる。なお、図６では、ニッケルメッキ部５１および金メッキ部５２にそれぞれ異なる平行斜線を付し、金メッキ部５２とニッケルメッキ部５１との境界を破線にて示している。図４および図５に示すように、３つの穴部４１１１はそれぞれ、突出部４２１１の穴部４２１１ａに対して突出部４２１１の伸びる方向（すなわち、図５における上下方向）に重なる。   FIG. 6 is an enlarged view showing the first connection terminal 411 of the wiring portion 41. The first connection terminal 411 includes a nickel plating part 51 which is a tip part of the first connection terminal 411 and which is plated with nickel, and a gold plating part 52 which is plated with gold continuously from the nickel plating part 51. The gold plating portion 52 is provided with a hole-like portion (hereinafter referred to as “hole portion 4111”). In FIG. 6, the nickel plating part 51 and the gold plating part 52 are given different parallel oblique lines, and the boundary between the gold plating part 52 and the nickel plating part 51 is indicated by a broken line. As shown in FIGS. 4 and 5, each of the three holes 4111 overlaps with the hole 4211a of the protrusion 4211 in the direction in which the protrusion 4211 extends (that is, the vertical direction in FIG. 5).

図２に示すように、第１接続端子４１１を含むコネクタ部材４の一方の端部はベース部２１の凹部２１２３内に配置され、突出部４２１１がベース部２１の貫通穴２１３内に位置する。このため、貫通穴２１３、並びに、第１接続端子４１１の穴部４１１１および突出部４２１１の穴部４２１１ａ（図４および図５参照）は中心軸Ｊ１に平行な方向において重なる。   As shown in FIG. 2, one end of the connector member 4 including the first connection terminal 411 is disposed in the recess 2123 of the base portion 21, and the protruding portion 4211 is located in the through hole 213 of the base portion 21. For this reason, the through-hole 213, the hole part 4111 of the 1st connection terminal 411, and the hole part 4211a (refer FIG. 4 and FIG. 5) of the protrusion part 4211 overlap in the direction parallel to the central axis J1.

コネクタ部材４では、第１接続端子４１１とステータ２３の導線２３２１とが半田２５を介して接合されるとともに、第１接続端子４１１とは反対側の第２接続端子４１２の図２における下方に突出する折曲部４１２１と回路基板２４とが当接し、これにより、ステータ２３と回路基板２４とが電気的に接続される。さらに、第１接続端子４１１および半田２５は樹脂材料２６により覆われて絶縁性が確保される。   In the connector member 4, the first connection terminal 411 and the conductor 2321 of the stator 23 are joined via the solder 25, and the second connection terminal 412 opposite to the first connection terminal 411 protrudes downward in FIG. 2. The bent portion 4121 and the circuit board 24 come into contact with each other, whereby the stator 23 and the circuit board 24 are electrically connected. Further, the first connection terminal 411 and the solder 25 are covered with the resin material 26 to ensure insulation.

図７は図２におけるコネクタ部材４近傍を拡大して示すモータ１の底面図であり、ベース部２１の凹部２１２３に設けられた樹脂材料２６の図示を省略している。コネクタ部材４がベース部２１に取り付けられた状態では、コネクタ部材４の３つの配線部４１がそれぞれ中心軸Ｊ１を中心とする略径方向に伸びており、ニッケルメッキ部５１（すなわち、配線部４１の先端部）は凹部２１２３の側壁２１２３ｂに対して径方向において近接する。   FIG. 7 is a bottom view of the motor 1 in which the vicinity of the connector member 4 in FIG. 2 is enlarged, and illustration of the resin material 26 provided in the recess 2123 of the base portion 21 is omitted. In a state in which the connector member 4 is attached to the base portion 21, the three wiring portions 41 of the connector member 4 extend in a substantially radial direction centered on the central axis J1, and the nickel plating portion 51 (that is, the wiring portion 41). The tip end portion of the concave portion 2123 is close to the side wall 2123b of the recess 2123 in the radial direction.

図８は図２におけるコネクタ部材４の第１接続端子４１１の先端近傍を拡大して示す断面図である。図８では、図６と同様に第１接続端子４１１のニッケルメッキ部５１および金メッキ部５２に互いに異なる平行斜線を付し、ニッケルメッキ部５１と金メッキ部５２との境界を破線にて示している（以下の図においても同様）。図７および図８に示すように、金メッキ部５２上には、ステータ２３の導線２３２１の端部が中心軸Ｊ１（図７参照）に向けられた状態（すなわち、コネクタ部材４の先端に向けられた状態）で半田付けされ、導線２３２１の端部の先端はニッケルメッキ部５１上に位置する。コネクタ部材４では、ニッケルメッキ部５１の濡れ性が金メッキ部５２の濡れ性よりも低いことから、導線２３２１の端部を金メッキ部５２上に固定する半田２５（図７では半田２５を平行斜線にて示している。）が金メッキ部５２よりも径方向内方に広がることが防止される。また、導線２３２１の端部、半田２５および樹脂材料２６（図８参照）はベース部２１の凹部２１２３内に位置し、これらが中央領域２１２１上に配置される他の部品に接触することが防止される。   8 is an enlarged cross-sectional view showing the vicinity of the tip of the first connection terminal 411 of the connector member 4 in FIG. In FIG. 8, similar to FIG. 6, the nickel plating portion 51 and the gold plating portion 52 of the first connection terminal 411 are given different parallel oblique lines, and the boundary between the nickel plating portion 51 and the gold plating portion 52 is indicated by a broken line. (The same applies to the following figures). As shown in FIGS. 7 and 8, on the gold plating portion 52, the end portion of the conducting wire 2321 of the stator 23 is directed to the central axis J1 (see FIG. 7) (that is, directed to the tip end of the connector member 4). The tip of the end portion of the conductive wire 2321 is located on the nickel plating portion 51. In the connector member 4, since the wettability of the nickel plating part 51 is lower than the wettability of the gold plating part 52, the solder 25 for fixing the end of the conductive wire 2321 on the gold plating part 52 (in FIG. Is prevented from spreading radially inward from the gold-plated portion 52. Further, the end portion of the conductive wire 2321, the solder 25 and the resin material 26 (see FIG. 8) are located in the recess 2123 of the base portion 21, and prevent them from coming into contact with other components arranged on the central region 2121. Is done.

図９はモータ１の組立途上におけるステータ２３およびコネクタ部材４が取り付けられたベース部２１の一部を示す断面図であり、図９では図２と上下が反転している。ステータ部２が組み立てられる際には、まず、ベース部２１の上下が反転された状態でステータ２３の導線２３２１がベース部２１の貫通穴２１３を経由してベース部２１の外部へと引き出され、ステータ２３がベース部２１のホルダ２１１に圧入等により固定される。   FIG. 9 is a cross-sectional view showing a part of the base portion 21 to which the stator 23 and the connector member 4 are attached in the course of assembling the motor 1, and FIG. 9 is upside down with respect to FIG. When the stator portion 2 is assembled, first, the conductive wire 2321 of the stator 23 is pulled out to the outside of the base portion 21 through the through hole 213 of the base portion 21 with the base portion 21 being turned upside down. The stator 23 is fixed to the holder 211 of the base portion 21 by press fitting or the like.

次に、導線２３２１がコネクタ部材４の図９における下側から上方（すなわち、図２における下方）に向かって突出部４２１１の穴部４２１１ａおよび第１接続端子４１１の穴部４１１１に挿入されるとともに、突出部４２１１がベース部２１の貫通穴２１３に圧入される。また、ベース部２１には予め図３に示す凹部２１２３の溝２１２３ａに接着剤が保持されており、コネクタ部材４はベース部２１に接着される。このように、コネクタ部材４は圧入および接着によりベース部２１に固定され、第１接続端子４１１を含む一方の端部はベース部２１の凹部２１２３内に配置された状態とされる。   Next, the conductive wire 2321 is inserted into the hole 4211a of the protruding portion 4211 and the hole 4111 of the first connection terminal 411 from the lower side of the connector member 4 in FIG. 9 toward the upper side (that is, the lower side in FIG. 2). The protruding portion 4211 is press-fitted into the through hole 213 of the base portion 21. Further, an adhesive is held in advance in the groove 2123 a of the recess 2123 shown in FIG. 3 in the base portion 21, and the connector member 4 is bonded to the base portion 21. As described above, the connector member 4 is fixed to the base portion 21 by press-fitting and bonding, and one end portion including the first connection terminal 411 is disposed in the recess 2123 of the base portion 21.

その後、導線２３２１が中心軸Ｊ１側（図９における左側）に向けて折り曲げられ、図１０に示すように、導線２３２１が配線部４１の金メッキ部５２上にて中心軸Ｊ１に向かう状態で半田付けされる。このとき、金メッキ部５２よりも濡れ性が低いニッケルメッキ部５１には半田が広がらず、ベース部２１の凹部２１２３の側壁２１２３ｂの中心軸Ｊ１側の部位と半田２５との間に隙間が設けられ、作業者がニッパの先端を当該隙間内に挿入してニッケルメッキ部５１上にて導線２３２１が切断される。   Thereafter, the conductive wire 2321 is bent toward the central axis J1 side (left side in FIG. 9), and soldered in a state where the conductive wire 2321 is directed to the central axis J1 on the gold plating portion 52 of the wiring portion 41 as shown in FIG. Is done. At this time, the solder does not spread in the nickel plating part 51, which has lower wettability than the gold plating part 52, and a gap is provided between the part on the side of the central axis J 1 of the side wall 2123 b of the recess 2123 of the base part 21 and the solder 25. Then, the operator inserts the tip of the nipper into the gap, and the conductive wire 2321 is cut on the nickel plating portion 51.

モータ１では、凹部２１２３内にて導線２３２１が切断されることにより、導線２３２１およびその周囲の半田が凹部２１２３から中央領域２１２１の図１０における上方へとはみ出ることが防止される。   In the motor 1, the lead wire 2321 is cut in the recess 2123, thereby preventing the lead wire 2321 and the surrounding solder from protruding from the recess 2123 upward in FIG. 10 in the central region 2121.

導線２３２１とコネクタ部材４との接合作業が完了すると、凹部２１２３には熱硬化性の樹脂材料が付与されて導線２３２１の端部および半田２５が覆われ、樹脂材料が加熱されて硬化される。そして、ベース部２１の上下が反転され、図２に示すように、スリーブユニット２２がホルダ２１１の内側に固定されてステータ部２の組み立てが完了する。   When the joining operation between the conductive wire 2321 and the connector member 4 is completed, a thermosetting resin material is applied to the recess 2123 to cover the end portion of the conductive wire 2321 and the solder 25, and the resin material is heated and cured. Then, the upper and lower sides of the base portion 21 are inverted, and the sleeve unit 22 is fixed inside the holder 211 as shown in FIG.

以上に説明したように、モータ１では、導線２３２１がコネクタ部材４の第１接続端子４１１に半田付けされる際に、金メッキ部５２上の半田２５が先端部（すなわち、ニッケルメッキ部５１）まで広がることが防止される。このように、コネクタ部材４では、ニッケルメッキ部５１および金メッキ部５２により半田２５の広がりが調整されるため、作業者が半田付け後にベース部２１を傷付けることなく導線２３２１を容易に切断することができ、導線２３２１とコネクタ部材４との接合の作業性が向上される。   As described above, in the motor 1, when the conductive wire 2321 is soldered to the first connection terminal 411 of the connector member 4, the solder 25 on the gold plating portion 52 extends to the tip portion (that is, the nickel plating portion 51). Spreading is prevented. Thus, in the connector member 4, since the spread of the solder 25 is adjusted by the nickel plating part 51 and the gold plating part 52, the operator can easily cut the conductive wire 2321 without damaging the base part 21 after soldering. Thus, the workability of joining the conductive wire 2321 and the connector member 4 is improved.

図１１は、導線２３２１の切断位置の他の好ましい例を示す図であり、半田および樹脂材料の図示を省略している。図１１に示す例では、導線２３２１とコネクタ部材４との接合の際に、導線２３２１の端部の先端がコネクタ部材４のニッケルメッキ部５１のエッジ４１１１ａ（すなわち、先端）とベース部２１の凹部２１２３の側壁２１２３ｂとの間に位置するように導線２３２１が切断される。切断工具の先端の大きさに対してエッジ４１１１ａと側壁２１２３ｂとの間の間隙が十分い大きい場合は、工具の先端を当該間隙に入れつつ図１１に示すように容易に導線２３２１を切断することができる。なお、工具の先端形状によっては、導線２３２１の端部の先端はニッケルメッキ部５１のエッジ４１１１ａ上に位置するように切断される場合もある。   FIG. 11 is a diagram showing another preferred example of the cutting position of the conductive wire 2321, and illustration of solder and resin material is omitted. In the example shown in FIG. 11, when joining the conductive wire 2321 and the connector member 4, the tip of the end of the conductive wire 2321 is the edge 4111 a (that is, the tip) of the nickel-plated portion 51 of the connector member 4 and the concave portion of the base portion 21. Conductive wire 2321 is cut so as to be positioned between side wall 2123b of 2123. When the gap between the edge 4111a and the side wall 2123b is sufficiently large with respect to the size of the tip of the cutting tool, the conductor 2321 can be easily cut as shown in FIG. 11 while the tip of the tool is placed in the gap. Can do. Depending on the shape of the tip of the tool, the tip of the end of the conductive wire 2321 may be cut so as to be positioned on the edge 4111a of the nickel plating portion 51.

以上、本発明の実施の形態について説明したが、本発明は上記実施の形態に限定されるものではなく、様々な変更が可能である。例えば、上記実施の形態では、コネクタ部材４のニッケルメッキ部５１はベース部２１の凹部２１２３の（絶縁膜が形成された）側壁２１２３ｂに当接してもよい。また、第１接続端子４１１には導線２３２１の端部が挿入される挿入部として穴部４１１１に代えて切欠状の部位が設けられてもよい。   Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made. For example, in the above embodiment, the nickel plating part 51 of the connector member 4 may abut on the side wall 2123b (where the insulating film is formed) of the recess 2123 of the base part 21. Further, the first connection terminal 411 may be provided with a notch-shaped portion as an insertion portion into which the end portion of the conducting wire 2321 is inserted instead of the hole portion 4111.

上記実施の形態では、ベース部２１の凹部２１２３は、中央領域２１２１と周辺領域２１２２との境界よりも径方向外方に伸びるように形成されてもよい。すなわち、凹部２１２３は中央領域２１２１内から少なくとも中央領域２１２１と周辺領域２１２２との境界まで形成され、コネクタ部材４の第１接続端子４１１を含む少なくとも一部が凹部２１２３内に配置される。   In the above embodiment, the concave portion 2123 of the base portion 21 may be formed to extend outward in the radial direction from the boundary between the central region 2121 and the peripheral region 2122. That is, the recess 2123 is formed from the center region 2121 to at least the boundary between the center region 2121 and the peripheral region 2122, and at least a part including the first connection terminal 411 of the connector member 4 is disposed in the recess 2123.

ベース部２１はハウジング６１の一部ではなく、例えば、ハウジングに取り付けられるブラケットであってもよい。記録ディスク駆動装置６０は、ハードディスク駆動装置に限定されず、光ディスク駆動装置、光磁気ディスク駆動装置等、記録ディスクに対する情報の読み出しおよび書き込みの一方または両方、すなわち、読み出しまたは書き込みを行う他の装置であってもよい。また、モータ１は記録ディスク駆動装置以外の装置の駆動源として用いられてもよい。   The base portion 21 is not a part of the housing 61 but may be a bracket attached to the housing, for example. The recording disk drive device 60 is not limited to a hard disk drive device, but is an optical disk drive device, a magneto-optical disk drive device, or the like, which is one or both of reading and writing information on a recording disk, that is, another device that performs reading or writing. There may be. The motor 1 may be used as a drive source for devices other than the recording disk drive device.

記録ディスク駆動装置の断面図である。It is sectional drawing of a recording disk drive device. モータの断面図である。It is sectional drawing of a motor. ベース部の底面図である。It is a bottom view of a base part. コネクタ部材の底面図である。It is a bottom view of a connector member. コネクタ部材の側面図である。It is a side view of a connector member. コネクタ部材の底面図である。It is a bottom view of a connector member. モータの底面図である。It is a bottom view of a motor. コネクタ部材の第１接続端子を拡大して示すモータの断面図である。It is sectional drawing of the motor which expands and shows the 1st connection terminal of a connector member. ベース部、コネクタ部材およびステータの一部を拡大して示す図である。It is a figure which expands and shows a part of base part, a connector member, and a stator. ベース部、コネクタ部材およびステータの一部を拡大して示す図である。It is a figure which expands and shows a part of base part, a connector member, and a stator. ベース部およびコネクタ部材の一部を拡大して示す図である。It is a figure which expands and shows a part of base part and a connector member.

符号の説明Explanation of symbols

１ モータ
２ ステータ部
３ ロータ部
４ コネクタ部材
２１ ベース部
２３ ステータ
２４ 回路基板
４１ 配線部
５１ ニッケルメッキ部
５２ 金メッキ部
６０ 記録ディスク駆動装置
６１ ハウジング
６２ 記録ディスク
６３ アクセス部
２１３ 貫通穴
２１２１ 中央領域
２１２２ 周辺領域
２１２３ 凹部
２３２１ 導線
４１１１ 穴部
Ｊ１ 中心軸 DESCRIPTION OF SYMBOLS 1 Motor 2 Stator part 3 Rotor part 4 Connector member 21 Base part 23 Stator 24 Circuit board 41 Wiring part 51 Nickel plating part 52 Gold plating part 60 Recording disk drive device 61 Housing 62 Recording disk 63 Access part 213 Through-hole 2121 Central area 2122 Around Region 2123 Recessed portion 2321 Conductor 4111 Hole portion J1 Central axis

Claims (4)

電動式のモータであって、
ステータ部と、
中心軸を中心として前記ステータ部に対して回転可能に支持されるロータ部と、
を備え、
前記ステータ部が、
ステータと、
前記ステータが取り付けられるベース部と、
前記ベース部の前記ステータとは反対側に取り付けられ、前記ステータの導線と回路基板とを接続するとともに互いに略平行に伸びる複数の配線部を有するコネクタ部材と、
を備え、
前記ベース部が、
前記中心軸が中央に位置する中央領域と、
前記中央領域の周囲において前記中央領域よりも前記ステータ側に位置する周辺領域と、
前記中央領域内から少なくとも前記中央領域と前記周辺領域との間の境界まで形成され、前記コネクタ部材の少なくとも一部が配置される凹部と、
を備え、
前記凹部内に前記中心軸に平行な方向に貫通する貫通穴が設けられ、
前記複数の配線部のそれぞれが、
前記凹部の側壁に近接または当接する先端部であり、ニッケルメッキが施されたニッケルメッキ部と、
前記ニッケルメッキ部から連続する金メッキが施された金メッキ部と、
を備え、
前記金メッキ部が、前記貫通穴と前記中心軸に平行な方向において重なる穴状または切欠状であって前記貫通穴から引き出された前記導線の端部が挿入される挿入部を有し、
前記挿入部に挿入された前記導線の前記端部が前記中心軸に向かう状態で前記金メッキ部に半田付けされていることを特徴とするモータ。 An electric motor,
A stator portion;
A rotor portion rotatably supported with respect to the stator portion around a central axis;
With
The stator portion is
A stator,
A base portion to which the stator is attached;
A connector member that is attached to the opposite side of the base portion from the stator and has a plurality of wiring portions that connect the stator wires and the circuit board and extend substantially parallel to each other;
With
The base portion is
A central region in which the central axis is located in the center;
A peripheral region located on the stator side of the central region around the central region;
A recess formed in the central region to at least a boundary between the central region and the peripheral region, wherein at least a part of the connector member is disposed;
With
A through-hole penetrating in a direction parallel to the central axis is provided in the recess,
Each of the plurality of wiring portions is
A tip portion that approaches or abuts the side wall of the recess, and a nickel-plated portion that is nickel-plated;
A gold-plated portion subjected to continuous gold-plating from the nickel-plated portion;
With
The gold-plated portion has a hole shape or a notch shape that overlaps with the through hole in a direction parallel to the central axis, and an insertion portion into which an end portion of the conducting wire drawn out from the through hole is inserted;
The motor according to claim 1, wherein the end portion of the conducting wire inserted into the insertion portion is soldered to the gold plating portion in a state toward the central axis. 請求項１に記載のモータであって、
前記導線の前記端部および前記端部を前記複数の配線部に固定する半田が、前記凹部内に位置することを特徴とするモータ。 The motor according to claim 1,
The motor according to claim 1, wherein the end portion of the conducting wire and solder for fixing the end portion to the plurality of wiring portions are located in the recess. 請求項１または２に記載のモータであって、
前記導線の前記端部の先端が前記ニッケルメッキ部のエッジと前記側壁との間に位置する、または、前記エッジ上に位置することを特徴とするモータ。 The motor according to claim 1 or 2,
The motor is characterized in that the end of the end portion of the conducting wire is located between the edge of the nickel plating portion and the side wall or on the edge. 記録ディスク駆動装置であって、
記録ディスクを回転する請求項１ないし３のいずれかに記載のモータと、
前記記録ディスクに対する情報の読み出しまたは書き込みを行うアクセス部と、
前記モータおよび前記アクセス部を収容するハウジングと、
を備えることを特徴とする記録ディスク駆動装置。 A recording disk drive device comprising:
The motor according to any one of claims 1 to 3, which rotates a recording disk;
An access unit for reading or writing information on the recording disk;
A housing for housing the motor and the access unit;
A recording disk drive device comprising:
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WO2018025990A1 (en) * 2016-08-05 2018-02-08 日本電産株式会社 Motor

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KR101130628B1 (en) 2010-04-07 2012-04-02 니혼 덴산 가부시키가이샤 Spindle motor and storage disk drive having the same
CN109565213B (en) * 2016-08-05 2020-12-08 日本电产株式会社 Motor with a stator having a stator core

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018025990A1 (en) * 2016-08-05 2018-02-08 日本電産株式会社 Motor

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