JPH09322497A - Molded motor - Google Patents
Molded motorInfo
- Publication number
- JPH09322497A JPH09322497A JP8141365A JP14136596A JPH09322497A JP H09322497 A JPH09322497 A JP H09322497A JP 8141365 A JP8141365 A JP 8141365A JP 14136596 A JP14136596 A JP 14136596A JP H09322497 A JPH09322497 A JP H09322497A
- Authority
- JP
- Japan
- Prior art keywords
- stator
- resin
- wiring board
- molded
- mold
- 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
Links
- 239000011347 resin Substances 0.000 claims abstract description 125
- 229920005989 resin Polymers 0.000 claims abstract description 125
- 238000000465 moulding Methods 0.000 claims abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 4
- 238000005549 size reduction Methods 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 description 21
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 238000009429 electrical wiring Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ステータおよびそ
れに給電するための配線基板を樹脂モールドしたタイプ
のモールドモータに関するものである。さらに詳しく
は、モータの小型化を妨げることなく、樹脂モールドを
安定した状態に行うことのできる構造技術に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded motor of a type in which a stator and a wiring board for supplying power to the stator are resin-molded. More specifically, the present invention relates to a structural technique capable of performing resin molding in a stable state without hindering downsizing of a motor.
【０００２】[0002]
【従来の技術】各種のモータのうち、ステータおよびそ
れに給電を行うための配線基板を樹脂でモールドしたタ
イプのモールドモータでは、図６に示すように、ステー
タ１０８Ａの両端面のうちの一方の端面を覆うように配
線基板１０２Ａが配置され、この状態で樹脂モールドさ
れている。従って、モールドモータでは、モータの振動
やメカノイズを低減することができるとともに、ステー
タ１０８Ａからの放熱性が高い。しかも、配線基板１０
２Ａを介してステータ１０８Ａの駆動コイル１０５への
配線を行うため、配線ミスが少ないという利点もある。
このような状態に、ステータ１０８Ａおよび配線基板１
０２Ａを樹脂モールドする際には、ステータ１０８Ａと
配線基板１０２Ａとを軸線方向に並べた状態で金型内に
入れ、配線基板１０２Ａの表面側（ステータ１０８Ａの
反対側）に樹脂を注入する。ここで、配線基板１０２Ａ
は単なる円板状であることから、配線基板１０２Ａの表
面側に注入した樹脂は、配線基板１０２Ａと金型の内周
面との隙間を通って裏面側（ステータ１０８Ａの側）に
回り込んで、ステータ１０８Ａを覆うことになる。2. Description of the Related Art Among various motors, in a molded motor of a type in which a stator and a wiring board for supplying electric power to the stator are molded with a resin, as shown in FIG. The wiring board 102A is arranged so as to cover and is resin-molded in this state. Therefore, in the molded motor, vibration of the motor and mechanical noise can be reduced, and heat dissipation from the stator 108A is high. Moreover, the wiring board 10
Wiring to the drive coil 105 of the stator 108A is performed via 2A, so that there is also an advantage that there are few wiring mistakes.
In this state, the stator 108A and the wiring board 1
When 02A is resin-molded, the stator 108A and the wiring board 102A are placed in the mold in a state where they are aligned in the axial direction, and the resin is injected into the front surface side (opposite side of the stator 108A) of the wiring board 102A. Here, the wiring board 102A
Is a simple disk shape, the resin injected into the front surface side of the wiring board 102A wraps around to the back surface side (side of the stator 108A) through the gap between the wiring board 102A and the inner peripheral surface of the mold. , The stator 108A will be covered.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
ように、単なる円板状の配線基板１０２Ａを用いると、
配線基板１０２Ａの表面側に注入した樹脂は、配線基板
１０２Ａと金型との狭い隙間を通って裏面側（ステータ
の側）に回り込むことになるので、安定した状態に樹脂
モールドできないという問題点がある。また、従来の構
造では、ステータ１０８Ａを覆う樹脂モールド部分１０
１ｂ，１０１ｃと配線基板１０２Ａの表面側を覆う樹脂
モールド部分１０１ａとは、配線基板１０２Ａの外周縁
と金型との隙間に相当する薄い樹脂１０１ｄだけで接続
し、この部分の樹脂１０１ｄには樹脂割れが発生しやす
いという問題点がある。However, when a simple disk-shaped wiring board 102A is used as in the conventional case,
The resin injected into the front surface side of the wiring board 102A wraps around to the back surface side (stator side) through the narrow gap between the wiring board 102A and the mold, so that there is a problem that the resin cannot be molded in a stable state. is there. Further, in the conventional structure, the resin mold portion 10 that covers the stator 108A is used.
1b and 101c and the resin mold portion 101a that covers the front surface side of the wiring board 102A are connected only by a thin resin 101d corresponding to the gap between the outer peripheral edge of the wiring board 102A and the mold. There is a problem that cracks easily occur.
【０００４】このような問題点を解消する方法として、
金型の内径寸法をさらに大きくして、配線基板１０２Ａ
の両側に位置する樹脂同士を接続する部分の樹脂１０１
ｄを厚くすることが考えられるが、このような方法で
は、樹脂１０１ｄが厚くなった分だけ、モータの外径寸
法が大きくなってしまう。[0004] As a method of solving such a problem,
Wiring board 102A by further increasing the inner diameter of the mold
Of the resin 101 for connecting the resins located on both sides of the
Although it is conceivable to make d thicker, in such a method, the outer diameter dimension of the motor becomes larger because the resin 101d becomes thicker.
【０００５】以上の問題点に鑑みて、本発明の課題は、
モータの小型化を妨げることなく、かつ、安定した状態
で樹脂モールドの行うことのできるモールドモータを提
供することにある。[0005] In view of the above problems, an object of the present invention is to provide:
It is an object of the present invention to provide a molded motor that can perform resin molding in a stable state without hindering miniaturization of the motor.
【０００６】[0006]
【課題を解決するための手段】上記の問題を解決するた
めに、本発明は、ロータマグネットを備えたロータと、
該ロータを回転駆動する駆動コイルを備えるステータ
と、該ステータの軸線方向に位置する両端面のうちの一
方の端面を覆うように配置した駆動コイル給電用の配線
基板とを有し、該配線基板および前記ステータが樹脂モ
ールドされたモールドモータにおいて、前記配線基板に
は、前記ステータとは反対側に流入したモールド用の樹
脂を前記ステータの側に通すための樹脂流通部が形成さ
れていることを特徴とする。To solve the above problems, the present invention provides a rotor having a rotor magnet,
The wiring board includes a stator including a drive coil that rotationally drives the rotor, and a drive coil power supply wiring board arranged to cover one end surface of both end surfaces located in the axial direction of the stator. Further, in the molded motor in which the stator is resin-molded, the wiring board is provided with a resin flow portion for passing the molding resin that has flowed into the side opposite to the stator to the stator side. Characterize.
【０００７】本発明において、金型内に配線基板とステ
ータとを軸線方向に並べて配置した後、配線基板の表面
側（ステータとは反対側）に樹脂を注入すると、そこに
注入された樹脂は、金型と配線基板との隙間が狭くて
も、配線基板の樹脂流通部を通ってステータの側にスム
ーズに流れ込むので、ステータおよび配線基板を安定し
た状態に樹脂モールドできる。また、樹脂は樹脂流通部
に充填され、そこに充填された樹脂は、ステータを覆う
樹脂モールド部分と配線基板の表面を覆う樹脂モールド
部分とを連結することになるので、ステータを覆う樹脂
モールド部分と配線基板の表面側を覆う樹脂モールド部
分との接続強度が向上する。ここで、樹脂流通部は、あ
くまで配線基板自身に形成した穴や切り欠きであるた
め、前記のとおり、ステータの側に樹脂をスムーズに回
り込ませ、かつ、ステータを覆う樹脂モールド部分と配
線基板の表面側を覆う樹脂モールド部分との接続強度を
高めるのに、金型の内周面と配線基板との隙間を拡張す
る必要がない。それ故、モータの小型化にも適してい
る。In the present invention, after the wiring board and the stator are arranged side by side in the axial direction in the mold, resin is injected into the surface side of the wiring board (the side opposite to the stator), and the injected resin is Even if the gap between the mold and the wiring board is narrow, the resin smoothly flows into the stator through the resin flow portion of the wiring board, so that the stator and the wiring board can be resin-molded in a stable state. Further, the resin is filled in the resin flow portion, and the resin filled therein connects the resin mold portion covering the stator and the resin mold portion covering the surface of the wiring board, so that the resin mold portion covering the stator is connected. And the connection strength between the resin mold portion covering the front surface side of the wiring board is improved. Here, since the resin flow portion is only a hole or a notch formed in the wiring board itself, as described above, the resin smoothly wraps around the stator side, and the resin mold portion covering the stator and the wiring board It is not necessary to expand the gap between the inner peripheral surface of the mold and the wiring board in order to enhance the connection strength with the resin mold portion covering the front surface side. Therefore, it is also suitable for downsizing the motor.
【０００８】本発明において、前記ステータに対する樹
脂モールド部分の外径寸法と前記ステータの外径寸法と
を略等しくして、モータの小型化を図ることが好まし
い。すなわち、ステータの外周部分を覆う樹脂を薄くし
て、モータの小型化を図ることが好ましい。In the present invention, it is preferable that the outer diameter dimension of the resin mold portion with respect to the stator and the outer diameter dimension of the stator are made substantially equal to each other to reduce the size of the motor. That is, it is preferable to reduce the size of the motor by thinning the resin that covers the outer peripheral portion of the stator.
【０００９】本発明において、前記ステータは、固定鉄
心と、この鉄心に巻かれた駆動コイルと、該駆動コイル
と前記固定鉄心との間でそれらの絶縁を確保する絶縁部
材とを備え、該絶縁部材は、前記配線基板側の端部に該
配線基板が当接する鍔部を具備していることが好まし
い。このように構成すると、金型内で配線基板の表面側
に樹脂を注入したときに配線基板が大きな圧力を受けて
も、配線基板は裏面側からステータの絶縁部材の鍔部で
支持されているので、配線基板は位置ずれせず、変形す
ることもない。In the present invention, the stator comprises a fixed iron core, a drive coil wound around the iron core, and an insulating member for ensuring insulation between the drive coil and the fixed iron core. It is preferable that the member has a flange portion at the end portion on the wiring board side, with which the wiring board abuts. With this configuration, even if the wiring board receives a large pressure when the resin is injected into the front surface side of the wiring board in the mold, the wiring board is supported from the back surface side by the collar portion of the insulating member of the stator. Therefore, the wiring board is not displaced and is not deformed.
【００１０】本発明において、前記ステータは前記絶縁
部材も含めて全体として円柱形状を有し、前記配線基板
は前記ステータの円柱端面と同じ外径寸法を有する円板
状であることが好ましい。すなわち、配線基板は、ステ
ータの端面と完全に重なり合う形状になっているので、
形状的にはモータの小型化に最も適している。In the present invention, it is preferable that the stator including the insulating member has a columnar shape as a whole, and the wiring board has a disk shape having the same outer diameter dimension as the columnar end surface of the stator. That is, since the wiring board has a shape that completely overlaps the end surface of the stator,
In terms of shape, it is most suitable for downsizing motors.
【００１１】[0011]
【発明の実施の形態】図面を参照して本発明の実施の形
態を説明する。Embodiments of the present invention will be described with reference to the drawings.
【００１２】図１は、本発明のモールドモータを示す図
である。FIG. 1 is a diagram showing a molded motor of the present invention.
【００１３】図１に示すように、本発明のモールドモー
タ１は、円筒状に樹脂モールドされたステータ１０８お
よび配線基板１０２からなるステータ組１０と、ステー
タ組１０の軸線方向の一方の端部に固定された第１のブ
ラケット４０と、ステータ組の他方の端部に固定された
第２のブラケット４１と、ステータ組１０の内側に配置
されたロータ２０とから概ね構成されている。As shown in FIG. 1, a molded motor 1 of the present invention includes a stator set 10 including a stator 108 and a wiring board 102 which are resin-molded in a cylindrical shape, and one end portion of the stator set 10 in the axial direction. The first bracket 40 is fixed, the second bracket 41 is fixed to the other end of the stator set, and the rotor 20 is arranged inside the stator set 10.
【００１４】第１のブラケット４０、および第２のブラ
ケット４１は、それぞれ中央部分に回転軸受け３０１、
３０２を保持している。また、第２のブラケット４１の
外側の面にはエンコーダケース４２が固定され、このエ
ンコーダケース４２内には、周方向に磁気信号が着磁記
録された磁気ドラムと、この磁気ドラムの周面に対し所
定の間隙をおいて対向配置された磁気センサとを有して
なる磁気式エンコーダ（図示せず）が配置されている。The first bracket 40 and the second bracket 41 are provided with a rotary bearing 301 and
Holds 302. An encoder case 42 is fixed to the outer surface of the second bracket 41. Inside the encoder case 42, a magnetic drum on which a magnetic signal is magnetically recorded in the circumferential direction and a peripheral surface of the magnetic drum are provided. On the other hand, a magnetic encoder (not shown) including a magnetic sensor arranged to face each other with a predetermined gap is arranged.
【００１５】ロータ２０は、回転軸受け３０１、３０２
に支持された回転軸２０１と、この回転軸２０１の外周
部分に構成されたロータマグネット２０２とから構成さ
れている。回転軸２０１の出力軸側２０１ａは、回転軸
受け３０１を通って第１のブラケット４０から突出して
いる。また、回転軸２０１の基端側２０１ｂは、回転軸
受け３０２を通って第２のフレーム４１からエンコーダ
ケース４２内に突出しており、この基端部２０１ｂに、
磁気式エンコーダの磁気ドラムが固定されることにな
る。The rotor 20 includes rotary bearings 301 and 302.
The rotary shaft 201 is supported by the rotary shaft 201, and the rotor magnet 202 is formed on the outer peripheral portion of the rotary shaft 201. The output shaft side 201 a of the rotary shaft 201 passes through the rotary bearing 301 and projects from the first bracket 40. Further, the base end side 201b of the rotary shaft 201 passes through the rotary bearing 302 and projects from the second frame 41 into the encoder case 42.
The magnetic drum of the magnetic encoder will be fixed.
【００１６】ステータ１０８は、配線基板１０２ととも
に樹脂１０１でモールドされたステータ組１０として搭
載されている。ステータ１０８は、円筒部分の内周面か
ら等角度間隔で中心に向かって複数の突極が延びた固定
鉄心１０３を有し、その先端側にはステータ１０８の軸
線方向に貫通する軸穴１０３ａを構成している。固定鉄
心１０３には絶縁部材１０４が被され、この絶縁部材１
０４の上から駆動コイル１０５が巻かれている。絶縁部
材１０４は、その内周側で軸線方向に沿って円筒状に延
びる鍔部１０４ａと、外周側で軸線方向に沿って円筒状
に延びる鍔部１０４ｂとを備え、これらの鍔部１０４
ａ、１０４ｂの間に駆動コイル１０５が巻回されてい
る。ここで、ステータ１０８は、絶縁部材１０４も含め
て全体として円柱形状を有し、その両端面からは鍔部１
０４ａ、１０４ｂの両端部が突出している状態にある。The stator 108 is mounted together with the wiring board 102 as a stator set 10 molded with resin 101. The stator 108 has a fixed iron core 103 having a plurality of salient poles extending from the inner peripheral surface of the cylindrical portion toward the center at equal angular intervals, and has a shaft hole 103a penetrating in the axial direction of the stator 108 at the tip end side thereof. I am configuring. The fixed iron core 103 is covered with an insulating member 104.
The drive coil 105 is wound from above 04. The insulating member 104 is provided with a flange portion 104a that extends in a cylindrical shape along the axial direction on the inner peripheral side and a flange portion 104b that extends in a cylindrical shape along the axial direction on the outer peripheral side.
The drive coil 105 is wound between a and 104b. Here, the stator 108 has a columnar shape as a whole including the insulating member 104, and the flange portion 1 is provided from both end surfaces thereof.
Both ends of 04a and 104b are in a protruding state.
【００１７】本発明では、ステータ１０８の一方の端面
を覆うように配線基板１０２が配置され、配線基板１０
２は、鍔部１０４ａ、１０４ｂの端部に当接する状態に
ある。配線基板１０２の表面では、その配線パターン上
に電源の側から電気配線１０６がはんだ付けされ、か
つ、配線パターンにはステータ１０８の駆動コイル１０
５から引き出された電気配線（図示せず。）がはんだ付
けされている。従って、配線基板１０２を介して駆動コ
イル１０５への配線が行われているので、配線ミスが発
生しにくい構造になっている。また、配線基板１０２
は、ステータ１０４の円柱端面と同じ外径寸法を有する
円板状である。なお、配線基板１０２の中央部分にはロ
ータの回転軸を通すための穴１０２ｄが形成されてい
る。In the present invention, the wiring board 102 is arranged so as to cover one end surface of the stator 108, and the wiring board 10 is provided.
2 is in a state of contacting the end portions of the collar portions 104a and 104b. On the surface of the wiring board 102, the electric wiring 106 is soldered onto the wiring pattern from the power source side, and the drive coil 10 of the stator 108 is mounted on the wiring pattern.
The electrical wiring (not shown) drawn from 5 is soldered. Therefore, since the wiring to the drive coil 105 is performed via the wiring board 102, the structure is such that wiring mistakes are less likely to occur. In addition, the wiring board 102
Is a disk shape having the same outer diameter dimension as the cylindrical end surface of the stator 104. A hole 102d is formed in the central portion of the wiring board 102 for allowing the rotation shaft of the rotor to pass therethrough.
【００１８】このように構成したステータ１０８と配線
基板１０２とを樹脂モールドする際は、図２（ａ）、
（ｂ）に示すように、ステータ１０８と配線基板１０２
とを軸線方向に並べた状態で金型Ｋ内に入れ、配線基板
１０２の表面側（ステータ１０８の反対側）に樹脂１０
１を注入する。このとき、配線基板１０２の表面側に注
入した樹脂１０１をステータ１０８の側に流れ込ませる
必要がある。When the stator 108 and the wiring board 102 thus constructed are resin-molded, as shown in FIG.
As shown in (b), the stator 108 and the wiring board 102.
Are placed in the mold K in a state where they are arranged in the axial direction, and the resin 10
Inject 1. At this time, it is necessary to cause the resin 101 injected on the front surface side of the wiring board 102 to flow into the stator 108 side.
【００１９】そこで、本発明では、配線基板１０２に
は、モールド用の樹脂１０１をステータ１０８の側に通
すために３つの樹脂流通穴１０２ａ（樹脂流通部）が１
２０度間隔で開けてある。Therefore, in the present invention, the wiring board 102 has three resin passage holes 102a (resin passage portions) for passing the molding resin 101 to the stator 108 side.
It is opened at 20 degree intervals.
【００２０】このような構造の配線基板１０２を用いて
樹脂モールドを行うと、配線基板１０２の表面側に注入
した樹脂１０１は、金型Ｋと配線基板１０２との隙間Ｄ
が狭くても、矢印Ａで示すように、配線基板１０２の樹
脂流通穴１０２ａを通ってステータ１０８の側にスムー
ズに流れ込む。また、樹脂１０１は、金型Ｋと配線基板
１０２との隙間Ｄからも、矢印Ｃで示すように、ステー
タ１０８の側にスムーズに流れ込む。なお、配線基板１
０２はステータ１０８の円柱端面と同じ外径寸法を有す
る円板状であるため、金型Ｋと配線基板１０２との隙間
Ｄが狭いのと同様、ステータ１０８の外周側面部と金型
Ｋとの隙間Ｅも狭いが、ステータ１０８の側に流れ込ん
だ樹脂１０１は、矢印Ｂに示すように、ステータ１０８
自身の隙間を通って反対側に流れ込む。すなわち、図３
に図１のＡ−Ａ’線におけるステータ組の部分断面を示
すように、ステータ１０８の各突極間には隙間Ｇがある
ため、この隙間Ｇを通って樹脂１０１は、図２（ｂ）に
矢印Ｂで示したように、ステータ１０８自身の隙間を通
って反対側に流れ込む。その結果、配線基板１０２はそ
の表面側が樹脂モールド部分１０１ａで覆われ、ステー
タ１０８の側は、樹脂モールド部分１０１ｂ、１０１ｃ
で覆われる。When resin molding is performed using the wiring board 102 having such a structure, the resin 101 injected on the front surface side of the wiring board 102 has a gap D between the mold K and the wiring board 102.
Even if is narrow, as shown by the arrow A, it smoothly flows into the side of the stator 108 through the resin flow hole 102a of the wiring board 102. Further, the resin 101 smoothly flows into the side of the stator 108 from the gap D between the mold K and the wiring board 102 as shown by an arrow C. The wiring board 1
Since 02 is a disk shape having the same outer diameter dimension as the cylindrical end surface of the stator 108, the outer peripheral side surface portion of the stator 108 and the mold K are the same as the gap D between the mold K and the wiring substrate 102 is narrow. Although the gap E is also narrow, the resin 101 that has flowed into the side of the stator 108 is
It flows into the other side through its own gap. That is, FIG.
As shown in the partial cross section of the stator set along the line AA ′ in FIG. 1, since there is a gap G between each salient pole of the stator 108, the resin 101 passes through this gap G and is shown in FIG. As indicated by the arrow B in FIG. As a result, the wiring board 102 is covered with the resin mold portion 101a on the front surface side, and the resin mold portions 101b and 101c on the stator 108 side.
Covered with.
【００２１】このように、本発明では、配線基板１０２
には、モールド用の樹脂１０１をステータ１０８の側に
通すために３つの樹脂流通穴１０２ａが開けてあるた
め、この配線基板１０２を用いて樹脂モールドを行う
と、配線基板１０２の表面側に注入した樹脂１０１は、
金型Ｋと配線基板１０２との隙間Ｄが狭くても、配線基
板１０２の樹脂流通穴１０２ａを通ってステータ１０８
の側にスムーズに流れ込む。従って、ステータ１０８お
よび配線基板１０２を安定した状態に樹脂モールドでき
る。また、樹脂１０１は樹脂流通穴１０２ａに充填さ
れ、そこに充填された樹脂１０１ｅは、ステータ１０８
を覆う樹脂モールド部分１０１ｂ，１０１ｃと配線基板
１０２を覆う樹脂モールド部分１０１ａとを連結するこ
とになるので、これらの樹脂モールド部分１０１ａ，１
０１ｂ，１０１ｃの接続強度が高い。As described above, according to the present invention, the wiring board 102 is provided.
Since three resin through holes 102a are formed in the wiring board 102 in order to pass the molding resin 101 to the side of the stator 108, when resin molding is performed using this wiring board 102, the resin is injected into the front surface side of the wiring board 102. The resin 101
Even if the gap D between the mold K and the wiring board 102 is narrow, the stator 108 passes through the resin flow hole 102a of the wiring board 102.
It flows smoothly into the side of. Therefore, the stator 108 and the wiring board 102 can be resin-molded in a stable state. Further, the resin 101 is filled in the resin flow hole 102a, and the resin 101e filled therein is the stator 108.
Since the resin mold portions 101b and 101c covering the resin mold portion 101a and the resin mold portion 101a covering the wiring board 102 are connected to each other, these resin mold portions 101a and 101c
The connection strength of 01b and 101c is high.
【００２２】しかも、樹脂流通穴１０２ａは、あくまで
配線基板１０２自身に形成した穴であるため、ステータ
１０８の側に樹脂１０１をスムーズに回り込ませ、か
つ、樹脂モールド部分１０１ａ，１０１ｂ，１０１ｃ同
士の接続強度を高めるのに金型Ｋの内周面Ｋ１と配線基
板１０２との隙間Ｄを拡張した場合と違って、モータの
小型化に有利である。Moreover, since the resin flow hole 102a is a hole formed in the wiring board 102 itself, the resin 101 can be smoothly wrapped around the stator 108 side, and the resin mold portions 101a, 101b, 101c can be connected to each other. Unlike the case where the gap D between the inner peripheral surface K1 of the mold K and the wiring board 102 is expanded to increase the strength, it is advantageous for downsizing the motor.
【００２３】さらに、本発明では、配線基板１０２の裏
面には絶縁部材１０４の鍔部１０４ａ、１０４ｂが当接
しているため、樹脂１０１の圧力がかかっても配線基板
１０２が位置ずれせず、また変形もしない。Further, according to the present invention, since the collar portions 104a and 104b of the insulating member 104 are in contact with the back surface of the wiring board 102, the wiring board 102 does not move even if pressure of the resin 101 is applied, and Does not transform.
【００２４】また、ステータ１０８に対する樹脂モール
ド部分１０１ｃの外径寸法とステータ１０８の外径寸法
とを略等しくしてある。すなわち、ステータ１０８の外
周部分を覆う樹脂（樹脂モールド部分１０１ｃ）を薄く
してあるので、モータの小型化を図ることができる。し
かも、ステータ１０８は絶縁部材１０４も含めて全体と
して円柱形状を有し、配線基板１０２はステータ１０８
の円柱端面と同じ外径寸法を有する円板状である。すな
わち、配線基板１０２は、ステータ１０８の端面と略重
なり合う形状になっているので、余計なはみ出し部分が
ないので、形状的にはモータの小型化に最も適してい
る。Further, the outer diameter dimension of the resin mold portion 101c with respect to the stator 108 and the outer diameter dimension of the stator 108 are made substantially equal. That is, since the resin (the resin mold portion 101c) covering the outer peripheral portion of the stator 108 is thin, the motor can be downsized. Moreover, the stator 108 has a columnar shape as a whole including the insulating member 104, and the wiring board 102 has the stator 108.
It is a disk shape having the same outer diameter dimension as the end face of the cylinder. That is, since the wiring board 102 has a shape that substantially overlaps with the end surface of the stator 108 and has no extra protruding portion, the shape is most suitable for downsizing the motor.
【００２５】［その他の実施の形態］配線基板１０２に
形成する樹脂流通部については、上記形態のように、円
形の穴でなくても、図４（ａ）に示すように、ロータの
回転軸を通すための穴１０２ｄから形成された半円状の
切欠きからなる樹脂流通穴１０２ｅでもよい。逆に、図
４（ｂ）に示すように外周縁から形成された半円状の切
欠きからなる樹脂流通穴１０２ｆであってもよい。ま
た、穴や切欠きの他にも、図４（ｃ）に示すように、配
線基板１０２の穴１０２ｄから外周縁にまで届く溝状の
樹脂流通部１０２ｇであってもよい。なお、図４（ｄ）
に示すように、樹脂モールド部分１０１ａ、１０１ｂ、
１０１ｃの外周形状が略四角形であってもよい。[Other Embodiments] As for the resin circulation portion formed on the wiring board 102, even if the resin circulation portion is not a circular hole as in the above embodiment, as shown in FIG. The resin flow hole 102e may be a semicircular cutout formed by the hole 102d for passing through. Conversely, as shown in FIG. 4B, the resin flow hole 102f may be a semicircular cutout formed from the outer peripheral edge. In addition to the holes and the notches, as shown in FIG. 4C, a groove-shaped resin flow portion 102g that reaches the outer peripheral edge from the hole 102d of the wiring board 102 may be used. FIG. 4 (d)
, The resin mold portions 101a, 101b,
The outer peripheral shape of 101c may be substantially square.
【００２６】さらに、図５（ａ）に示す配線基板のよう
に、図４（ａ）に示したような樹脂流通穴、および図４
（ｂ）に示したような樹脂流通穴の双方を有するものを
用いてもよい。Further, like the wiring board shown in FIG. 5A, the resin flow hole as shown in FIG. 4A, and FIG.
You may use what has both resin flow holes as shown in (b).
【００２７】すなわち、図５（ａ）に示すように、配線
基板１０２の外周縁には等角度間隔で配置された９個の
位置決め部１０２ｂと、各位置決め部１０２ｂの両側に
配置された駆動コイル挿通部１０２ｃとが外周縁からの
切欠きとして形成されている。更に、これらの切欠きの
間には、６個の樹脂流通穴１０２ｆが外周縁からの半円
形の切欠きとして形成されている。また、配線基板１０
２の外周縁だけでなく、配線基板１０２の中心穴１０２
ｄの縁にも２個の樹脂流通穴１０２ｅが半円形の切欠き
として形成されている。That is, as shown in FIG. 5A, nine positioning portions 102b arranged at equal angular intervals on the outer peripheral edge of the wiring board 102, and drive coils arranged on both sides of each positioning portion 102b. The insertion portion 102c is formed as a notch from the outer peripheral edge. Further, between these notches, six resin flow holes 102f are formed as semicircular notches from the outer peripheral edge. Also, the wiring board 10
2 as well as the outer peripheral edge of the wiring board 102 and the central hole 102 of the wiring board 102.
Two resin circulation holes 102e are also formed in the edge of d as semicircular notches.
【００２８】このような配線基板１０２をモータに搭載
する場合には、図５（ｂ）に示すように、配線基板１０
２をステータ１０８の軸方向の一方の端面に配置する際
に、ステータ１０８（絶縁部材１０４）の位置決め用突
起１０４ｅを配線基板１０２の位置決め部１０２ｂに嵌
合させ、配線基板１０２を位置決めする。また、駆動コ
イル１０５からの電気配線は、駆動コイル挿通部１０２
ｃを通して配線基板１０２の表面にまで引き出し、配線
パターンにはんだ付けする。また、電源からの電気配線
１０６も、配線基板１０２上の配線パターンにはんだ付
けする。When such a wiring board 102 is mounted on a motor, as shown in FIG.
When 2 is arranged on one end surface of the stator 108 in the axial direction, the positioning protrusion 104e of the stator 108 (insulating member 104) is fitted into the positioning portion 102b of the wiring board 102 to position the wiring board 102. Further, the electrical wiring from the drive coil 105 is connected to the drive coil insertion portion 102.
It is pulled out to the surface of the wiring board 102 through c and is soldered to the wiring pattern. The electric wiring 106 from the power source is also soldered to the wiring pattern on the wiring board 102.
【００２９】このように構成した配線基板１０２を用い
た場合も、配線基板１０２には、モールド用の樹脂１０
１をステータ１０８の側に通すための樹脂流通穴１０２
ｅ、１０２ｆが開けてあるため、この配線基板１０２を
用いて樹脂モールドを行うと、配線基板１０２の表面側
に注入した樹脂は、金型と配線基板１０２との隙間が狭
くても、配線基板１０２の樹脂流通穴１０２ｅ、１０２
ｆを通ってステータ１０８の側にスムーズに流れ込む。
従って、ステータ１０８および配線基板１０２を安定し
た状態に樹脂モールドできる。また、樹脂は樹脂流通穴
１０２ｅ、１０２ｆに充填され、そこに充填された樹脂
は、ステータ１０８を覆う樹脂モールド部分と配線基板
１０２を覆う樹脂モールド部分とを連結することになる
ので、これらの樹脂モールド部分同士の接続強度が高
い。Even when the wiring board 102 having the above-mentioned structure is used, the wiring board 102 has a resin 10 for molding.
1. Resin passage hole 102 for passing 1 to the stator 108 side
Since e and 102f are opened, when resin molding is performed using this wiring board 102, the resin injected to the front surface side of the wiring board 102 has a small gap between the mold and the wiring board 102 even if the wiring board 102 has a narrow gap. 102 resin flow holes 102e, 102
Smoothly flows into the stator 108 side through f.
Therefore, the stator 108 and the wiring board 102 can be resin-molded in a stable state. Further, the resin is filled in the resin flow holes 102e and 102f, and the resin filled therein connects the resin mold portion covering the stator 108 and the resin mold portion covering the wiring board 102. The connection strength between mold parts is high.
【００３０】しかも、樹脂流通穴１０２ｅ、１０２ｆ
は、あくまで配線基板１０２自身に形成した穴であるた
め、ステータ１０８の側に樹脂をスムーズに回り込ま
せ、かつ、樹脂モールド部分同士の接続強度を高めるの
に金型の内周面と配線基板１０２との隙間を拡張した場
合と違って、モータの小型化に有利である。Moreover, the resin flow holes 102e, 102f
Is a hole formed in the wiring board 102 itself, so that the resin smoothly wraps around the stator 108 side and the connection strength between the resin mold portions is increased, the inner peripheral surface of the mold and the wiring board 102 are improved. Unlike the case where the gap between and is expanded, it is advantageous for downsizing the motor.
【００３１】[0031]
【発明の効果】以上に説明したように、本発明によれ
ば、配線基板に樹脂流通部を形成してあるため、配線基
板の表面側に注入された樹脂は、金型と配線基板との隙
間が狭くても、配線基板の樹脂流通部を通ってステータ
の側にスムーズに流れ込む。従って、ステータおよび配
線基板を安定した状態に樹脂モールドできる。また、樹
脂流通部に充填された樹脂は、ステータを覆う樹脂モー
ルド部分と配線基板を覆う樹脂モールド部分とを連結す
ることになるので、ステータを覆う樹脂モールド部分と
配線基板の表面側を覆う樹脂モールド部分との接続強度
が向上する。それ故、ステータの側に樹脂をスムーズに
回り込ませ、かつ、ステータを覆う樹脂モールド部分と
配線基板の表面側を覆う樹脂モールド部分との接続強度
を高めるのに、金型の内周面と配線基板との隙間を拡張
する必要がないので、モータの小型化に適している。As described above, according to the present invention, since the resin circulating portion is formed in the wiring board, the resin injected into the front surface side of the wiring board is not separated between the mold and the wiring board. Even if the gap is narrow, it smoothly flows into the stator side through the resin flow portion of the wiring board. Therefore, the stator and the wiring board can be resin-molded in a stable state. Further, since the resin filled in the resin circulation portion connects the resin mold portion covering the stator and the resin mold portion covering the wiring board, the resin molding portion covering the stator and the resin covering the front surface side of the wiring board. The connection strength with the mold part is improved. Therefore, in order to make the resin smoothly wrap around the stator side and to increase the connection strength between the resin mold part covering the stator and the resin mold part covering the surface side of the wiring board, the inner peripheral surface of the mold and the wiring Since it is not necessary to expand the gap with the substrate, it is suitable for downsizing the motor.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明のモールドモータを示す図である。FIG. 1 is a diagram showing a molded motor of the present invention.
【図２】ステータ組を示す図である。FIG. 2 is a diagram showing a stator assembly.
【図３】図１のＡ−Ａ’線におけるステータ組の部分断
面図である。FIG. 3 is a partial cross-sectional view of the stator set taken along the line AA ′ in FIG.
【図４】（ａ）、（ｂ）、（ｃ）は配線基板の変形例を
示す図、（ｄ）は樹脂モールド部分の外形形状を変形し
た例を示す図である。4A, 4B, and 4C are diagrams showing modified examples of the wiring board, and FIG. 4D is a diagram showing a modified example of the outer shape of the resin mold portion.
【図５】（ａ）は配線基板の変形例を示す図、（ｂ）は
この配線基板をステータに取り付けた様子を示す図であ
る。5A is a diagram showing a modification of the wiring board, and FIG. 5B is a diagram showing a state in which the wiring board is attached to a stator.
【図６】従来のモールドモータを示す図である。FIG. 6 is a diagram showing a conventional molded motor.
１ モールドモータ １０ ステータ組 １０１ 樹脂 １０１ａ 配線基板の表面側の樹脂モールド部 １０１ｂ、１０１ｃ ステータの側の樹脂モールド部 １０１ｄ 配線基板の外周縁を覆う樹脂 １０１ｅ 樹脂流通穴に充填された樹脂 １０２ 配線基板 １０２ａ、１０２ｅ、１０２ｆ 樹脂流通穴（樹脂流通
部） １０２ｇ 樹脂流通部 １０３ 固定子鉄心 １０４ 絶縁部材 １０４ａ、１０４ｂ 絶縁部材の鍔部 １０５ 駆動コイル １０６ 電気配線 ２０ ロータ ３０１、３０２ 回転軸受け ４０ 第１のブラケット ４１ 第２のブラケット1 Molded Motor 10 Stator Set 101 Resin 101a Resin Molded Part on Front Side of Wiring Board 101b, 101c Resin Molded Part on Stator Side 101d Resin Covering Outer Edge of Wiring Board 101e Resin Filled in Resin Flow Hole 102 Wiring Board 102a , 102e, 102f Resin distribution hole (resin distribution part) 102g Resin distribution part 103 Stator core 104 Insulation member 104a, 104b Insulation member collar 105 Drive coil 106 Electric wiring 20 Rotor 301, 302 Rotation bearing 40 First bracket 41 Second bracket
Claims (4)
ロータを回転駆動する駆動コイルを備えるステータと、
該ステータの軸線方向に位置する両端面のうちの一方の
端面を覆うように配置した駆動コイル給電用の配線基板
とを有し、該配線基板および前記ステータが樹脂モール
ドされたモールドモータにおいて、 前記配線基板には、前記ステータとは反対側に流入した
モールド用の樹脂を前記ステータの側に通すための樹脂
流通部が形成されていることを特徴としたモールドモー
タ。1. A rotor including a rotor magnet, and a stator including a drive coil for rotationally driving the rotor,
A molded motor in which the wiring board and the stator are resin-molded, wherein the wiring board and the stator are arranged so as to cover one end surface of both end surfaces located in the axial direction of the stator. A molded motor, wherein the wiring board is formed with a resin circulating portion for passing a molding resin that has flowed into the side opposite to the stator to the side of the stator.
る樹脂モールド部分の外径寸法は、前記ステータの外径
寸法と略等しいことを特徴とするモールドモータ。2. The molded motor according to claim 1, wherein an outer diameter dimension of the resin molded portion with respect to the stator is substantially equal to an outer diameter dimension of the stator.
タは、固定鉄心と、この鉄心に巻かれた駆動コイルと、
該駆動コイルと前記固定鉄心との間でそれらの絶縁を確
保する絶縁部材とを備え、該絶縁部材は、前記配線基板
側の端部に該配線基板が当接する鍔部を具備しているこ
とを特徴とするモールドモータ。3. The stator according to claim 1, wherein the stator is a fixed iron core, and a drive coil is wound around the iron core.
An insulating member for ensuring insulation between the drive coil and the fixed iron core is provided, and the insulating member has a flange portion with which the wiring board abuts at an end portion on the wiring board side. Molded motor characterized by.
絶縁部材も含めて全体として円柱形状を有し、前記配線
基板は前記ステータの円柱端面と略同じ外径寸法を有す
る円板状であることを特徴とするモールドモータ。4. The stator according to claim 3, wherein the stator, including the insulating member, has a cylindrical shape as a whole, and the wiring board has a disk shape having an outer diameter dimension substantially the same as the cylindrical end surface of the stator. Molded motor characterized by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14136596A JP3316380B2 (en) | 1996-06-04 | 1996-06-04 | Mold motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14136596A JP3316380B2 (en) | 1996-06-04 | 1996-06-04 | Mold motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09322497A true JPH09322497A (en) | 1997-12-12 |
| JP3316380B2 JP3316380B2 (en) | 2002-08-19 |
Family
ID=15290297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14136596A Expired - Fee Related JP3316380B2 (en) | 1996-06-04 | 1996-06-04 | Mold motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3316380B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003134755A (en) * | 2001-10-26 | 2003-05-09 | Sumitomo Wiring Syst Ltd | Centralized distribution member of thin brushless motor for vehicle |
| JP2018050361A (en) * | 2016-09-20 | 2018-03-29 | アイシン精機株式会社 | Stator and stator manufacturing method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117639346A (en) * | 2022-08-18 | 2024-03-01 | 罗伯特·博世有限公司 | Motor stator, motor and vehicle-mounted compressor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04295258A (en) * | 1991-03-22 | 1992-10-20 | Mitsubishi Electric Corp | Molded motor |
| JPH07107724A (en) * | 1993-10-04 | 1995-04-21 | Matsushita Electric Ind Co Ltd | Stator for brushless motor |
| JPH07213030A (en) * | 1994-01-13 | 1995-08-11 | Shibaura Eng Works Co Ltd | Assembly method of molded motor |
-
1996
- 1996-06-04 JP JP14136596A patent/JP3316380B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04295258A (en) * | 1991-03-22 | 1992-10-20 | Mitsubishi Electric Corp | Molded motor |
| JPH07107724A (en) * | 1993-10-04 | 1995-04-21 | Matsushita Electric Ind Co Ltd | Stator for brushless motor |
| JPH07213030A (en) * | 1994-01-13 | 1995-08-11 | Shibaura Eng Works Co Ltd | Assembly method of molded motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003134755A (en) * | 2001-10-26 | 2003-05-09 | Sumitomo Wiring Syst Ltd | Centralized distribution member of thin brushless motor for vehicle |
| JP2018050361A (en) * | 2016-09-20 | 2018-03-29 | アイシン精機株式会社 | Stator and stator manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3316380B2 (en) | 2002-08-19 |
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