JP3985964B2 - A stator having detent torque generating means and an axial air gap type brushless motor having the same stator - Google Patents

A stator having detent torque generating means and an axial air gap type brushless motor having the same stator Download PDF

Info

Publication number
JP3985964B2
JP3985964B2 JP2004140616A JP2004140616A JP3985964B2 JP 3985964 B2 JP3985964 B2 JP 3985964B2 JP 2004140616 A JP2004140616 A JP 2004140616A JP 2004140616 A JP2004140616 A JP 2004140616A JP 3985964 B2 JP3985964 B2 JP 3985964B2
Authority
JP
Japan
Prior art keywords
stator
armature coil
printed wiring
core armature
air
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.)
Active
Application number
JP2004140616A
Other languages
Japanese (ja)
Other versions
JP2005323471A5 (en
JP2005323471A (en
Inventor
忠男 山口
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.)
Tokyo Parts Ind Co Ltd
Original Assignee
Tokyo Parts Ind Co Ltd
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 Tokyo Parts Ind Co Ltd filed Critical Tokyo Parts Ind Co Ltd
Priority to JP2004140616A priority Critical patent/JP3985964B2/en
Publication of JP2005323471A publication Critical patent/JP2005323471A/en
Publication of JP2005323471A5 publication Critical patent/JP2005323471A5/ja
Application granted granted Critical
Publication of JP3985964B2 publication Critical patent/JP3985964B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Description

この発明は、移動体小型通信装置の無音報知源やマッサージャの振動源として好適なディテントトルク発生手段を有するステータと同ステータを備えた軸方向空隙型ブラシレスモータに関する。   The present invention relates to a stator having detent torque generating means suitable as a silent notification source of a mobile small communication device and a vibration source of a massager, and an axial gap type brushless motor provided with the stator.

近年移動体通信装置において振動モータもサイレントアラーム手段の他に振動を利用する機能を付加したものが出始めている。このような場合は、従来の円筒型、あるいは扁平型のブラシタイプのものでは、どうしても摺動部分があるので寿命が比較的問題となってくる。
従来より、ブラシレスモータは、3相で3個のホールセンサを備えたものがあるが、フアンモータにする場合は、構成が簡単な単相型空心電機子ステータを備えたものか(特許文献1参照)、3相のセンサレス型ステータを備えたものが知られている。ところで、ブラシレスモータとして取り扱いの利便性から通常のブラシ型モータと同様に給電端子を正負の2端子、すなわち、駆動回路を内蔵したものが望まれる(特許文献2、3参照)
In recent years, in mobile communication devices, vibration motors having a function of utilizing vibration in addition to silent alarm means have started to appear. In such a case, with a conventional cylindrical or flat brush type, there is a sliding part, so the life becomes a relatively problem.
Conventionally, some brushless motors are provided with three hall sensors in three phases. However, when a fan motor is used, is it provided with a single-phase air-core armature stator with a simple configuration? (Refer to the above) One having a three-phase sensorless stator is known. By the way, from the convenience of handling as a brushless motor, it is desired that the power supply terminal has two positive and negative terminals, that is, a built-in drive circuit, as in a normal brush type motor (see Patent Documents 2 and 3).

通常は自起動ができない単相の空心電機子コイルからなるステータを備えたものでは、自起動ができるようにロータを所要の位置に停止させておく手段としてデイテントトルク発生用磁性体をステータ側に配置させる必要がある。しかも薄型で小型な軸方向空隙型ブラシレスでは、内蔵する駆動回路部材と共にこのディテントトルク発生部材の配置には格別の配慮が必要となる。このようなディテントトルク発生部材の配置実施例として先に特許第3537815号を提案している。(特許文献3参照)
特開平11−8951号 特開2002−142427号 特許第3537815号
In the case of a stator having a single-phase air-core armature coil that cannot normally be self-started, a magnetic material for generating a detent torque is used as a means for stopping the rotor at a required position so that self-start can be performed. Need to be placed in In addition, in the thin and small axial gap type brushless, special consideration is required for the arrangement of the detent torque generating member together with the built-in driving circuit member. Japanese Patent No. 3537815 has been proposed as an arrangement example of such a detent torque generating member. (See Patent Document 3)
JP 11-8951 A JP 2002-142427 Japanese Patent No. 3537815

しかしながら、最近の径方向のサイズが10mm以下のような小型なものが要求されるようになると、単相型であっても巻線型空心電機子コイルの占める面積が大となって2個の巻線型空心電機子コイルを配置したものでは、駆動回路部材を格納させることに苦労する。
そこで、この発明の目的は、巻線型空心電機子コイルを少なくしても起動が容易にできると共に、ディテントトルク発生手段として電機子コイル型にしてトルク発生に寄与しながらディテントトルク用磁性体を厚みをほとんど無視できるようなものにして空隙が犠牲にならないようにし、小型化のために主要磁界に配置しながらも巻数の少ない印刷配線型空心電機子コイルを巧みに利用することによって適度な停止トルクが得られるようにして損失の少なくするもので、すなわち、自己起動できない単相電機子コイル型に採用した場合であっても最大トルクが得られる位置に停止させることによって起動が確実にできるようにするものである。
However, when a recent small size such as a radial size of 10 mm or less is required, the area occupied by the wound air-core armature coil becomes large even if it is a single-phase type, and two windings are required. In the case where the linear air-core armature coil is arranged, it is difficult to store the drive circuit member.
Accordingly, an object of the present invention is to enable easy start-up even if the number of wire-wound air-core armature coils is reduced, and to reduce the thickness of the detent torque magnetic body while contributing to torque generation by using an armature coil type as a detent torque generating means. By making good use of a printed wiring type air-core armature coil with a small number of turns while being placed in the main magnetic field for miniaturization, an appropriate stopping torque can be obtained. Therefore, even if it is adopted for a single-phase armature coil type that cannot be self-started, it can be reliably started by stopping at a position where maximum torque can be obtained. To do.

上記課題を解決するには、請求項1に示すように軸方向空隙型マグネットが備えられたロータを駆動するステータであって、印刷配線板からなるステータベースは少なくとも1個の巻線型空心電機子コイルが配されると共に少なくとも1個の印刷配線型空心電機子コイルとが形成され、該印刷配線型空心電機子コイルの少なくとも一部に磁性薄膜を形成することによって前記ロータと組みあわせてデイテントトルクを発生させることで達成できる。
具体的には、請求項2に示すように前記巻線型空心電機子コイルは前記印刷配線板の第1面に配されると共に、該印刷配線型空心電機子コイルは少なくとも一部が第2面に形成されて前記巻線型空心電機子コイルと単相に結線されており、前記磁性薄膜は磁性メッキで形成され、さらに、該印刷配線板の前記第1面に平面視で巻線型空心電機子コイルと重畳しないように駆動回路部材が配されたものがよい。
そして、これらのステータを使用して軸方向空隙型ブラシレスモータにするには、請求項3に示すように請求項1又は2に記載のステータに組み合わせるロータは0.2mm以下で厚みがあるロータヨークと該ロータヨークに保持された前記軸方向空隙型マグネットと、該マグネットの外方で前記ロータヨークに配された偏心ウエイトからなり、軸を介してヨークブラケットとカバー部材に回転自在に格納されたものにすると達成できる。
In order to solve the above-mentioned problem, a stator for driving a rotor provided with an axial gap magnet as set forth in claim 1, wherein the stator base made of a printed wiring board has at least one wound-type air core armature. A coil is disposed and at least one printed wiring type air-core armature coil is formed, and a magnetic thin film is formed on at least a part of the printed wiring type air-core armature coil to combine with the rotor to form a detent. This can be achieved by generating torque.
Specifically, as shown in claim 2, the wound-type air-core armature coil is disposed on a first surface of the printed wiring board, and at least a part of the printed-wire-type air-core armature coil is a second surface. The magnetic thin film is formed by magnetic plating, and is formed on the first surface of the printed wiring board in a plan view. It is preferable that the drive circuit member is arranged so as not to overlap with the coil.
Then, to the axial direction gap type brushless motor uses these stator, a rotor which combine the stator according to claim 1 or 2 as shown in claim 3 is the thickness at 0.2mm below the rotor yoke And an axial gap magnet held by the rotor yoke, and an eccentric weight arranged on the rotor yoke outside the magnet, and is rotatably stored in the yoke bracket and the cover member via the shaft. This can be achieved.

請求項1の発明によれば、印刷配線型空心電機子コイルの一部に配されたディテントトルク発生手段は磁性薄膜で形成されたため、厚みがほとんど無視できることになるので、この部分の空間が活用でき、主要磁界が生ずる空隙が犠牲にならないし、停止トルクも適度になるので、磁束のロスも少なくでき、さらに印刷配線型電機子コイルによってトルク発生に寄与できる。
請求項2の発明にすれば、巻線型空心電機子コイルは1個で済むので構成が簡単で組立も容易となり、印刷配線型空心コイルも数量を増やすことによってトルクの発生に寄与でき、駆動回路も容易に搭載できる。
請求項3の発明では、極めて薄く、起動が確実で、コスト的にも有利な軸方向空隙型振動モータが得られる。
According to the first aspect of the present invention, since the detent torque generating means arranged in a part of the printed wiring type air-core armature coil is formed of a magnetic thin film, the thickness can be almost ignored. In addition, the air gap in which the main magnetic field is generated is not sacrificed, and the stop torque is also moderate. Therefore, the loss of magnetic flux can be reduced, and the printed wiring type armature coil can contribute to the generation of torque.
According to the invention of claim 2, since only one winding type air-core armature coil is required, the configuration is simple and the assembly is facilitated, and the printed wiring type air-core coil can contribute to the generation of torque by increasing the quantity, and the drive circuit Can be easily mounted.
According to the third aspect of the present invention, it is possible to obtain an axial gap type vibration motor which is extremely thin, can be started up reliably, and is advantageous in cost.

印刷配線板からなるステータベースの第1の面に1個の巻線型空心電機子コイルが配されると共に第2の面に3個の印刷配線型空心電機子コイルが形成され、該印刷配線型空心電機子コイルの少なくとも一部を磁性メッキすることによって前記ロータと組みあわせてデイテントトルクを発生させ、巻線型空心電機子コイルに重畳しないように駆動回路部材を配したものである。
図1は、この発明のステータを示し、ステータベースの第1面側からみた平面図で、図2は、図1のステータベースの第2面側からみた平面図である。(実施例1)
図3は、図1のステータを備えた扁平ブラシレス振動モータの断面図である。
図4は 図2の変形例で印刷配線型空心電機子コイルを6個形成したものでステータベースの第2面側からみた平面図である。(実施例2)
図5は、図4の結線関係の説明図である。
One winding-type air-core armature coil is arranged on the first surface of the stator base made of the printed wiring board, and three printed-wiring type air-core armature coils are formed on the second surface. A drive circuit member is arranged so that a detent torque is generated in combination with the rotor by magnetically plating at least a part of the air-core armature coil and is not superimposed on the wound-type air-core armature coil.
FIG. 1 shows a stator according to the present invention, and is a plan view seen from the first surface side of the stator base. FIG. 2 is a plan view seen from the second surface side of the stator base of FIG. Example 1
FIG. 3 is a cross-sectional view of a flat brushless vibration motor including the stator of FIG.
FIG. 4 is a plan view seen from the second surface side of the stator base in which six printed wiring type air-core armature coils are formed in the modification of FIG. (Example 2)
FIG. 5 is an explanatory diagram of the connection relationship of FIG.

図1、図2において、ステータを構成するヨークブラケット1は、非磁性もしくは弱磁性を有するステンレス板で厚みが0.1mmないし0.2mmの薄型で構成され、中央にバーリング状に突き立てた軸支承部1aがある。この軸支承部1aには0.6mm程度の細手の軸2がその基端を圧入することによって立設され、この周囲に薄い印刷配線板からなるステータベース3が接着などで載置される。ここで軸2が圧入だけで強度が確保できない場合は、基端を外側(この図1では紙面の裏側)からレーザ溶接Yするのがよい。前記ステータベース3には、第1の面(上面)に1個の巻線型空心電機子コイル4が載置される。図2の第2の面(下面)は3個の印刷配線空心電機子コイル4a、4b、4cが120°の配置開角で形成される。組み合わせるロータ側のマグネットの極数に応じてコイルの開角や数が決まるが、ここでは、組み合わせるロータ側のマグネット8は6極で構成される。
各空心電機子コイル4、4a、4b、4cは、両端の有効導体部分が組み合わせるマグネット8のNS極にそれぞれかかるように設定されてそれぞれスルーホール、巻き終わり側は巻き方向などを変えて直結されてシリーズに結線され、スルーホール等を介して第1の面側の前記巻線型空心電機子コイル4にもシリーズに結線されて単相の電機子を構成している。前記印刷配線空心電機子コイル4a‥‥の表面は、部分的に磁性薄膜M、M1として10ミクロン程度の純鉄などの磁性メッキが施される。
この磁性メッキの位置は、有効導体部の位置のMと、組み合わせるマグネットのニュートラルにかかるようにした無効導体部の位置のM1との組み合わせで構成している。(以下磁性薄膜をここでは磁性メッキという。)
これによって組み合わせる軸方向空隙型マグネット8の磁界を受けて各空心電機子コイルの有効導体部は確実にマグネットの最大磁界に停止することになる。そして、この磁性メッキ面は前記ヨークブラケット1に添設させたとき絶縁する必要があるためレジスト処理される。
なお、各印刷配線型空心電機子コイルは一組の単相の空心電機子コイルとしてシリーズに結線させるには、内径部分のスルーホールは必要であるが、ここでは詳細な説明は省略する。
1 and 2, the yoke bracket 1 constituting the stator is a non-magnetic or weak magnetic stainless steel plate having a thin thickness of 0.1 mm to 0.2 mm, and has a shaft protruding in the center in a burring shape. There is a bearing 1a. A thin shaft 2 having a thickness of about 0.6 mm is erected on the shaft support portion 1a by press-fitting a base end thereof, and a stator base 3 made of a thin printed wiring board is placed around the shaft support portion 1a by adhesion or the like. . Here, when the shaft 2 is only press-fitted and the strength cannot be secured, it is preferable to perform laser welding Y on the base end from the outside (the back side of the paper in FIG. 1). On the stator base 3, one wound air-core armature coil 4 is placed on the first surface (upper surface). The second surface (lower surface) of FIG. 2 is formed with three printed wiring air-core armature coils 4a, 4b, and 4c with an opening angle of 120 °. The opening angle and number of coils are determined according to the number of poles of the rotor-side magnet to be combined. Here, the rotor-side magnet 8 to be combined is composed of six poles.
Each air core armature coil 4, 4 a, 4 b, 4 c is set so that the effective conductor portions at both ends are placed on the NS pole of the magnet 8 to be combined. A single-phase armature is configured by connecting to the winding type air-core armature coil 4 on the first surface side through a through hole or the like and also to the winding type air-core armature coil 4 in series. The surface of the printed wiring air-core armature coils 4a... Is partially subjected to magnetic plating such as pure iron of about 10 microns as the magnetic thin films M and M1.
The position of the magnetic plating is constituted by a combination of M at the position of the effective conductor portion and M1 at the position of the ineffective conductor portion that covers the neutral of the magnet to be combined. (Hereinafter, the magnetic thin film is referred to as magnetic plating.)
As a result, the effective conductor portion of each air-core armature coil is surely stopped at the maximum magnetic field of the magnet upon receiving the magnetic field of the axial gap type magnet 8 to be combined. The magnetic plating surface is resist-treated because it needs to be insulated when attached to the yoke bracket 1.
In addition, in order to connect each printed wiring type air-core armature coil in series as a set of single-phase air-core armature coils, a through hole in the inner diameter portion is necessary, but detailed description thereof is omitted here.

前記ステータベース3の第1の面側の巻線型空心電機子コイル4に重畳しない位置で、1個のホールセンサhと、このホールセンサhの出力を受ける集積化された駆動回路部材Drが配置され、前記空心電機子コイル4と共に紫外線硬化型樹脂5で固着される。この樹脂5は、後記図3に示すように空隙を決める最大の載置部材、ここでは駆動回路部材Drの上面には出ないようになっている。また、これらの各部材は一般的な射出成形樹脂で一体成型しても良い。
ここでホールセンサhと駆動回路部材Drは対向して配置させているが、このように限定する必要はなく、このようなステータSは、ヨークブラケット1の外周の一部が側方に突き出されて給電端子載置部1bとして形成され、ステータベース3のやはり外周の一部に突き出したほぼ同寸の給電端子3aを保護している。
ホールセンサhは出力アップのために平面視で裏側(第2の面側)の前記印刷配線型空心電機子コイルの磁性メッキMされた位置に配されるのが良い。このようにするとホールセンサhの出力は十分に得られ、ディテントトルク発生部としての磁性メッキの位置、巻線型空心電機子コイルの位置及び印刷配線空心電機子コイルの形成位置関係は、各空心電機子コイルの有効導体部は想像線で示すような組み合わせるマグネット8の磁極の磁界中に位置されるように設定される。磁性メッキM、M1は前記マグネット8の磁力によって停止させておくに当たって全姿勢で最小の起動トルクが得られるようにその位置が設定される。すなわち、最大磁界である磁極のほぼ中心が各空心電機子コイル4、4a、4b、4cの有効導体部上に停止することになるので起動トルクが大きく得られ、起動が容易となる。このようにすると、デイテントトルク発生部材は印刷配線空心電機子コイルに部分的に形成した磁性メッキMによるので厚みがほとんど無視されるので薄型に構成できる。 なお、磁性メッキの厚みが少ないことによるディテントトルクが少ない場合は、メッキする位置を多くすることもでき、組み合わせるマグネットのニュートラル部が跨るように複数の無効導体部に磁性薄膜M1として形成しても良い。
One hall sensor h and an integrated drive circuit member Dr that receives the output of the hall sensor h are arranged at a position that does not overlap with the wound type air-core armature coil 4 on the first surface side of the stator base 3. Then, it is fixed together with the air-core armature coil 4 with an ultraviolet curable resin 5. As shown in FIG. 3 to be described later, the resin 5 does not appear on the upper surface of the maximum mounting member that determines the gap, here, the drive circuit member Dr. Each of these members may be integrally molded with a general injection molding resin.
Here, the Hall sensor h and the drive circuit member Dr are arranged to face each other, but it is not necessary to limit the position of the Hall sensor h and the drive circuit member Dr. In such a stator S, a part of the outer periphery of the yoke bracket 1 protrudes sideways. The power supply terminal mounting portion 1b is formed to protect the power supply terminal 3a of substantially the same size protruding from a part of the outer periphery of the stator base 3 as well.
The Hall sensor h is preferably arranged at a position where the magnetic plating M of the printed wiring type air-core armature coil on the back side (second surface side) in a plan view is used for increasing the output. In this way, the output of the Hall sensor h can be sufficiently obtained, and the position of the magnetic plating as the detent torque generating portion, the position of the wound-type air core armature coil, and the formation position relationship of the printed wiring air core armature coil are as follows. The effective conductor portion of the child coil is set so as to be positioned in the magnetic field of the magnetic pole of the magnet 8 to be combined as shown by the imaginary line. When the magnetic plating M and M1 are stopped by the magnetic force of the magnet 8, their positions are set so that the minimum starting torque can be obtained in all positions. That is, almost the center of the magnetic pole, which is the maximum magnetic field, stops on the effective conductor portion of each air-core armature coil 4, 4a, 4b, 4c, so that a large starting torque can be obtained and the starting becomes easy. In this case, the detent torque generating member is made of the magnetic plating M partially formed on the printed wiring air-core armature coil, so that the thickness is almost neglected and can be made thin. When the detent torque due to the small thickness of the magnetic plating is small, the number of plating positions can be increased, and the magnetic thin film M1 can be formed on a plurality of invalid conductor portions so that the neutral portion of the magnet to be combined is straddled. good.

このようなステータを使用して軸方向空隙型ブラシレスモータ、特に、ここではロータを偏心させたブラシレス振動モータにするには、図3に示すようなものとなる。すなわち、この偏心ロータRを構成する一部材である薄いヨーク板6には、希土類磁石粉末を焼成した軸方向空隙型マグネット8が接着される。この薄いヨーク板6は、前記軸方向空隙型マグネット8の磁界を受ける平坦部6hとこの平坦部6hに一体の外径側垂下部6aと内径側垂下部6bを有し、前記軸方向空隙型マグネット8を囲うようになっているので、このマグネット8は強い接着力を得ている。弧状の偏心ウエイト9を固着する外径側垂下部6aには、2個の舌片6cが前記外径側垂下部6aに一体に水平に法線方向外方に突き出されると共に、フランジ6dが前記内径側垂下部6bから水平に内方に突き出され、前記舌片6cに合致する凹所9aをはめ込んで受け止めするように偏心ウエイト9を配着し、前記マグネットの内径側で前記内径側垂下部6bから内方に一体に突き出されたフランジ6dに鍔付き焼結含油軸受7が鍔部をカシメKによって取り付けられる。   FIG. 3 shows an axial gap type brushless motor using such a stator, in particular, a brushless vibration motor in which the rotor is eccentric in this case. That is, to the thin yoke plate 6 which is a member constituting the eccentric rotor R, the axial gap type magnet 8 obtained by firing rare earth magnet powder is bonded. The thin yoke plate 6 has a flat portion 6h that receives the magnetic field of the axial gap type magnet 8, an outer diameter side hanging portion 6a and an inner diameter side hanging portion 6b that are integral with the flat portion 6h, and the axial gap type. Since the magnet 8 is enclosed, the magnet 8 has a strong adhesive force. On the outer diameter side hanging portion 6a to which the arc-shaped eccentric weight 9 is fixed, two tongue pieces 6c are integrally projected to the outer diameter side hanging portion 6a horizontally and outward in the normal direction, and a flange 6d is provided. An eccentric weight 9 is disposed so as to be fitted in and received by a recess 9a that protrudes horizontally inward from the inner diameter side hanging portion 6b and matches the tongue piece 6c, and the inner diameter side drooping is performed on the inner diameter side of the magnet. A flanged sintered oil-impregnated bearing 7 is attached to the flange 6d integrally projecting inward from the portion 6b by caulking K.

このようにすれば、弧状の偏心ウエイト9を凹所9aと前記舌片6cをろう付あるいは接着で固定して偏心ロータRとして容易に構成できる。ここでは、強度を確保するために前記ヨークブラケット1の中央の軸支承部に圧入して基端をレーザ溶接Yされた軸2に、前記偏心ロータRを回転自在に装着するのであるが、格納するに当たっては、ブレーキ損失を軽減させるために2枚〜3枚に積層したスラストワッシャS1を介して前記軸2に回転自在に装着される。その後、薄い非磁性ステンレス材からなる浅いキャップ状のカバー部材10が被せられ、前記軸の先端が前記カバー部材10の中央に形成された軸装着孔10aにはめ込まれる。ここで、この軸装着孔10aは先端が軸径よりさらに細くなっており、軸2の先端が突き出ないようになっていてこの先端部分は衝撃時の変形予防のために前記カバー部材10にレーザスポット溶接Yされると共に、カバー部材10の開口縁は前記ヨークブラケット1の外周部1cにレーザスポット溶接Lで組み付けられる。
したがって、このように軸の端部を含めて溶接によってモノコック構造に組み立てられるので、薄手、細手の部材を使用しても強度が十分得られることになる。
In this way, the arcuate eccentric weight 9 can be easily configured as the eccentric rotor R by fixing the recess 9a and the tongue piece 6c by brazing or bonding. Here, in order to ensure strength, the eccentric rotor R is rotatably mounted on a shaft 2 whose base end is laser welded Y by being press-fitted into the central shaft support portion of the yoke bracket 1. In doing so, in order to reduce brake loss, it is rotatably mounted on the shaft 2 via a thrust washer S1 laminated in two to three sheets. Thereafter, a shallow cap-shaped cover member 10 made of a thin nonmagnetic stainless material is covered, and the tip of the shaft is fitted into a shaft mounting hole 10 a formed in the center of the cover member 10. Here, the tip of the shaft mounting hole 10a is further narrower than the shaft diameter so that the tip of the shaft 2 does not protrude, and this tip portion is provided with a laser on the cover member 10 to prevent deformation upon impact. In addition to spot welding Y, the opening edge of the cover member 10 is assembled to the outer peripheral portion 1 c of the yoke bracket 1 by laser spot welding L.
Accordingly, since the monocoque structure is assembled by welding including the end portion of the shaft in this way, sufficient strength can be obtained even if thin and thin members are used.

このようにステータベース3上に設けた巻線型空心電機子コイル4、ホールセンサhおよび駆動回路部材DrなどからなるステータSは、偏心ロータRと共にハウジングを構成するカバー部材10の内部に格納することによってモータ外部へは給電端子載置部1bから一対の電源端子3aを導出するだけでよいので、ブラシレスモータでありながら通常のモータと同様に取り扱うことができる。
カバー部材10は非磁性オーステナイト系ステンレスにすれば、断熱効果があるので、リフローに耐えられる。
Thus, the stator S composed of the wound air-core armature coil 4, the hall sensor h, the drive circuit member Dr, and the like provided on the stator base 3 is housed in the cover member 10 constituting the housing together with the eccentric rotor R. Therefore, it is only necessary to lead out the pair of power supply terminals 3a from the power supply terminal mounting portion 1b to the outside of the motor, so that it can be handled in the same manner as a normal motor although it is a brushless motor.
If the cover member 10 is made of nonmagnetic austenitic stainless steel, it has a heat insulating effect and can withstand reflow.

図4はステータベースに形成される前記印刷配線型電機子コイルとして単相ながら巻数を確保するために6個で形成したものを示している。各印刷配線型電機子コイル4d〜4iは、内径部巻始めはスルーホールを介して、外径部同士は巻き方向を変えたりして直接結線されるが、図示すると複雑となるので省略し、図5のイメージで示すように結線状態となるようにしてある。ここでも、磁性薄膜としての磁性メッキMは、想像線で示すような組み合わせるマグネット8のニュートラルの位置を避けるように設定され、無効導体部の磁性メッキM1は、ニュートラル部になるように設定される。これによって6個の印刷配線型電機子コイル4d〜4iの有効導体部と、第1面側の巻線型空心電機子コイル4の有効導体部はマグネット8の最大磁界中に停止することになるので、電流の方向を矢印の向きに与えれば全コイルにマグネットを同一方向に駆動する起磁力が発生して起動が容易となる。   FIG. 4 shows the printed wiring type armature coil formed on the stator base that is formed of 6 pieces in order to ensure the number of turns in a single phase. Each printed wiring type armature coil 4d-4i is directly connected by changing the winding direction between the outer diameter portions through the through holes at the beginning of the inner diameter portion winding. As shown in the image of FIG. 5, the connection state is established. Also here, the magnetic plating M as the magnetic thin film is set so as to avoid the neutral position of the magnet 8 to be combined as shown by the imaginary line, and the magnetic plating M1 of the invalid conductor portion is set to be the neutral portion. . As a result, the effective conductor portions of the six printed wiring type armature coils 4 d to 4 i and the effective conductor portion of the winding-type air-core armature coil 4 on the first surface side are stopped in the maximum magnetic field of the magnet 8. If the direction of the current is given in the direction of the arrow, a magnetomotive force that drives the magnets in the same direction is generated in all the coils, and the activation becomes easy.

上記各実施例はブラシレス振動モータを例示したが、ステータとしては通常回転型ブラシレスモータ、例えば、ロータにフアンを取り付けたフアンモータとして使用することもできる。また磁性薄膜として磁性メッキからなるものを示したが、磁性粉末を溶解した塗料を印刷しても良い。さらに、巻線型空心電機子コイルはサイズ、コストが供されれば2個以上使用したものでも良い。
この発明は、その技術的思想、特徴から逸脱することなく、他のいろいろな実施の形態をとることができる。そのため、前述の実施の形態は単なる例示に過ぎず限定的に解釈してはならない。この発明の技術的範囲は特許請求の範囲によって示すものであって明細書本文には拘束されない。
Although each of the above embodiments has exemplified a brushless vibration motor, the stator can also be used as a normal rotary brushless motor, for example, a fan motor having a fan attached to a rotor. Moreover, although what consists of magnetic plating was shown as a magnetic thin film, you may print the coating material which melt | dissolved magnetic powder. Furthermore, two or more wire-wound air-core armature coils may be used if size and cost are provided.
The present invention can take various other embodiments without departing from the technical idea and characteristics thereof. Therefore, the above-described embodiment is merely an example and should not be interpreted in a limited manner. The technical scope of the present invention is indicated by the claims, and is not restricted by the text of the specification.

この発明のステータとしてステータベースの第1面側からみた平面図である。It is the top view seen from the 1st surface side of the stator base as a stator of this invention. 図1のステータベースの第2面側からみた平面図である。(実施例1)It is the top view seen from the 2nd surface side of the stator base of FIG. Example 1 図1、図2のステータを備えた扁平ブラシレス振動モータの断面図である。It is sectional drawing of the flat brushless vibration motor provided with the stator of FIG. 1, FIG. 図2の変形例で印刷配線型空心電機子コイルを6個形成したものでステータベースの第2面側からみた平面図である。(実施例2)FIG. 6 is a plan view of a stator base as viewed from the second surface side in which six printed wiring type air-core armature coils are formed in the modification of FIG. 2. (Example 2) 図4の結線関係の説明図である。It is explanatory drawing of the connection relation of FIG.

符号の説明Explanation of symbols

1 ヨークブラケット
2 軸
3 ステータベース
4 巻線型空心電機子コイル
4a〜4i 印刷配線型空心電機子コイル
5 樹脂
6 薄いヨーク板
7 軸受
8 軸方向空隙型マグネット
9 偏心ウエイト
10 カバー部材
M、M1 磁性薄膜
h ホールセンサ
Dr 駆動回路部材
DESCRIPTION OF SYMBOLS 1 Yoke bracket 2 axis | shaft 3 Stator base 4 Winding type | mold air-core armature coil 4a-4i Printed wiring type | formula air-core armature coil 5 Resin 6 Thin yoke plate 7 Bearing 8 Axial direction gap type magnet 9 Eccentric weight 10 Cover member M, M1 Magnetic thin film h Hall sensor Dr Drive circuit member

Claims (3)

軸方向空隙型マグネットが備えられたロータを駆動するステータであって、印刷配線板からなるステータベースは少なくとも1個の巻線型空心電機子コイルが配されると共に少なくとも1個の印刷配線型空心電機子コイルとが形成され、該印刷配線型空心電機子コイルの少なくとも一部に磁性薄膜を形成することによって前記ロータと組みあわせてデイテントトルクを発生させることを特徴とするディテントトルク発生手段を有するステータ。   A stator for driving a rotor provided with an axial air gap type magnet, wherein a stator base made of a printed wiring board is provided with at least one winding type air core armature coil and at least one printed wiring type air core electric machine. And a detent torque generating means for generating detent torque in combination with the rotor by forming a magnetic thin film on at least a part of the printed wiring type air-core armature coil. Stator. 前記巻線型空心電機子コイルは前記印刷配線板の第1面に配されると共に、該印刷配線型空心電機子コイルは少なくとも一部が第2面に形成されて前記巻線型空心電機子コイルと単相に結線されており、前記磁性薄膜は磁性メッキで形成され、さらに、該印刷配線板の前記第1面に平面視で巻線型空心電機子コイルと重畳しないように駆動回路部材が配された請求項1に記載のディテントトルク発生手段を有するステータ。   The wound type air-core armature coil is disposed on the first surface of the printed wiring board, and the printed-wire type air core armature coil is at least partially formed on the second surface, The magnetic thin film is formed by magnetic plating, and a drive circuit member is arranged on the first surface of the printed wiring board so as not to overlap with the wound air-core armature coil in plan view. A stator having the detent torque generating means according to claim 1. 請求項1又は2に記載のステータに組み合わせるロータは0.2mm以下で厚みがあるロータヨークと該ロータヨークに保持された前記軸方向空隙型マグネットと、該マグネットの外方で前記ロータヨークに配された偏心ウエイトからなり、軸を介してヨークブラケットとカバー部材に回転自在に格納されたことを特徴とする軸方向空隙型ブラシレスモータ。 Rotor and the axial air-gap type magnet which is held in a certain thickness rotor yoke and said rotor yoke in 0.2mm below to combine the stator according to claim 1 or 2, disposed on the rotor yoke at the outside of the magnet An axial gap type brushless motor comprising an eccentric weight and rotatably stored in a yoke bracket and a cover member via a shaft.
JP2004140616A 2004-05-11 2004-05-11 A stator having detent torque generating means and an axial air gap type brushless motor having the same stator Active JP3985964B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004140616A JP3985964B2 (en) 2004-05-11 2004-05-11 A stator having detent torque generating means and an axial air gap type brushless motor having the same stator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004140616A JP3985964B2 (en) 2004-05-11 2004-05-11 A stator having detent torque generating means and an axial air gap type brushless motor having the same stator

Publications (3)

Publication Number Publication Date
JP2005323471A JP2005323471A (en) 2005-11-17
JP2005323471A5 JP2005323471A5 (en) 2007-07-05
JP3985964B2 true JP3985964B2 (en) 2007-10-03

Family

ID=35470322

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004140616A Active JP3985964B2 (en) 2004-05-11 2004-05-11 A stator having detent torque generating means and an axial air gap type brushless motor having the same stator

Country Status (1)

Country Link
JP (1) JP3985964B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008023779A2 (en) 2006-08-21 2008-02-28 Seiko Epson Corporation Single-phase brushless motor
EP2284979A1 (en) * 2009-08-13 2011-02-16 Sunonwealth Electric Machine Industry Co., Ltd. Miniature motor with axial air gap and printed windings

Also Published As

Publication number Publication date
JP2005323471A (en) 2005-11-17

Similar Documents

Publication Publication Date Title
JP3560606B1 (en) A stator with a built-in drive circuit and an axial gap type brushless motor having the stator
JP4187773B1 (en) An axial gap type brushless vibration motor equipped with a thin stator and the same stator
JP4728765B2 (en) Rotating machine
US20020125842A1 (en) DC brushless vibration motor
JP3537815B1 (en) Axial air gap type brushless motor having the stator and the stator
JP3985964B2 (en) A stator having detent torque generating means and an axial air gap type brushless motor having the same stator
JP3894368B2 (en) Motor armature, axial gap motor with the same armature
JP2004297903A (en) Axial gap type brushless motor
KR100839354B1 (en) Axial direction gap type brushless motor
KR100527814B1 (en) Eccentric rotor and flat type vibrating motor with the rotor
JP5363001B2 (en) Permanent magnet motor
JP3568521B2 (en) Axial gap type brushless vibration motor with built-in drive circuit
JP3472761B2 (en) Small brushless vibration motor
JP3616085B2 (en) Eccentric rotor and axial gap type brushless vibration motor having the same eccentric rotor
JP3938397B2 (en) Axial gap type brushless motor having the same stator
JP3706016B2 (en) Flat small brushless vibration motor
JP2005312240A (en) Eccentric rotor equipped with detent torque generator and flat coreless vibration motor equipped with same rotor
JP2019187132A (en) Motor and brushless wiper motor
JP2008199856A (en) Stator core, rotary electric machine and rotary electric machine unit
JP2004336837A (en) Eccentric rotor and axial air gap type brushless vibration motor comprising the same
JP3537816B1 (en) A stator with a built-in Hall sensor and drive circuit, and an axial gap type brushless motor having the same stator
JP2004174296A (en) Axial gap type brushless vibration motor having sensor-less drive circuit built therein
JP3252140B1 (en) Eccentric rotor and flat type vibration motor provided with the rotor
JP2006094643A (en) Single-phase brushless motor
JP3759092B2 (en) Flat coreless vibration motor equipped with an eccentric rotor and the same rotor

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070510

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070517

A871 Explanation of circumstances concerning accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A871

Effective date: 20070517

TRDD Decision of grant or rejection written
A975 Report on accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A971005

Effective date: 20070703

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20070705

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070705

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100720

Year of fee payment: 3