JP2018113787A - Rotary electric machine, manufacturing method of rotary electric machine, and exhaust fan - Google Patents

Rotary electric machine, manufacturing method of rotary electric machine, and exhaust fan Download PDF

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JP2018113787A
JP2018113787A JP2017002976A JP2017002976A JP2018113787A JP 2018113787 A JP2018113787 A JP 2018113787A JP 2017002976 A JP2017002976 A JP 2017002976A JP 2017002976 A JP2017002976 A JP 2017002976A JP 2018113787 A JP2018113787 A JP 2018113787A
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circuit board
shaft
straight line
electrical machine
rotating electrical
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拓也 中村
Takuya Nakamura
拓也 中村
岡田　順二
Junji Okada
順二 岡田
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a rotary electric machine capable of being easily assembled.MEANS FOR SOLVING THE PROBLEM: A rotary electric machine comprises: a cylindrical stator 19; a rotator 16 that is arranged in an inner side of the stator 19, and rotates as an axis of a shaft 15; and a circuit substrate 12 that forms a part of an outer shell, of which a width in a direction vertical to the direction toward the outer side from a rotational axis is larger than a radial of the shaft 15 in a plane surface vertical to the rotational axis of the rotor 16, and which includes a concave part 12A to which the shaft 15 is penetrated.SELECTED DRAWING: Figure 1

Description

本発明は、回転電機及び回転電機の製造方法並びに換気扇に関するものである。   The present invention relates to a rotating electrical machine, a method for manufacturing the rotating electrical machine, and a ventilation fan.

回転電機は、鉄心と巻き線とを有するステーターと、ステーターの内側に配置されるローターと、ローターを貫通するシャフトと、シャフトが貫通し、シャフトのローターよりも上方に配置されたベアリングと、駆動回路を構成する電子部品が搭載され、ローターとベアリングとの間に配置され、シャフトが貫通する回路基板とを、板金やモールド樹脂を材料とする筐体内に備える。   The rotating electrical machine includes a stator having an iron core and windings, a rotor disposed inside the stator, a shaft passing through the rotor, a bearing penetrating the shaft and disposed above the rotor of the shaft, and driving. An electronic component that constitutes a circuit is mounted, and a circuit board that is disposed between the rotor and the bearing and through which the shaft passes is provided in a housing made of sheet metal or mold resin.

回路基板は、ベアリングより大きい直径を有する円形孔を回路基板の内側に有し、回転電機を組み立てる際には、シャフト及びベアリングが回路基板の円形孔に挿入される（例えば、特許文献１）。   The circuit board has a circular hole having a diameter larger than that of the bearing on the inside of the circuit board. When the rotating electrical machine is assembled, the shaft and the bearing are inserted into the circular hole of the circuit board (for example, Patent Document 1).

特開２００２−３３０５７１号公報JP 2002-330571 A

このような回転電機にあっては、回転電機の組み立て工程において、回路基板に設けられた円形孔にシャフトを挿入する際に、回路基板の円形孔に対するシャフトの位置決めが難しく、回転電機の組み立てが困難であるという課題があった。   In such a rotating electrical machine, when the shaft is inserted into the circular hole provided in the circuit board in the assembly process of the rotating electrical machine, it is difficult to position the shaft with respect to the circular hole in the circuit board. There was a problem that it was difficult.

本発明は、上述のような問題を解決するためになされたものであり、容易に組み立てることのできる回転電機を提供することを目的とする。   The present invention has been made to solve the above-described problems, and an object thereof is to provide a rotating electrical machine that can be easily assembled.

本発明にかかる回転電機は、筒状のステーターと、ステーターの内側に配置され、シャフトを軸として回転するローターと、外殻の一部を形成し、ローターの回転軸に垂直な平面において、回転軸から外側に向かう方向に垂直な方向の幅がシャフトの径以上であり、シャフトが貫通する凹部を有する回路基板とを備えたことを特徴とする。   The rotating electrical machine according to the present invention is a cylindrical stator, a rotor that is arranged inside the stator, rotates around a shaft, forms a part of an outer shell, and rotates on a plane perpendicular to the rotation axis of the rotor. A width of a direction perpendicular to the direction from the shaft to the outside is equal to or greater than the diameter of the shaft, and a circuit board having a recess through which the shaft passes is provided.

本発明にかかる回転電機によれば、シャフトが貫通する凹部が回路基板の外郭の一部を形成しているので、シャフトに対して回路基板を組み付ける際に、回路基板の凹部に対するシャフトの位置決めが容易になる。そのため、容易に回転電機を組み立てることができる。   According to the rotating electrical machine according to the present invention, since the concave portion through which the shaft passes forms a part of the outline of the circuit board, the positioning of the shaft with respect to the concave portion of the circuit board is performed when the circuit board is assembled to the shaft. It becomes easy. Therefore, the rotating electrical machine can be easily assembled.

本発明の実施の形態１にかかる回転電機を示す分解斜視図である。It is a disassembled perspective view which shows the rotary electric machine concerning Embodiment 1 of this invention. 本発明の実施の形態１にかかる回転電機が備える基板ケースを示す平面図である。It is a top view which shows the board | substrate case with which the rotary electric machine concerning Embodiment 1 of this invention is provided. 本発明の実施の形態１にかかる回転電機が備える回路基板を示す平面図である。It is a top view which shows the circuit board with which the rotary electric machine concerning Embodiment 1 of this invention is provided. 本発明の実施の形態１にかかる回転電機を備えた換気扇を示す断面図である。It is sectional drawing which shows the ventilation fan provided with the rotary electric machine concerning Embodiment 1 of this invention. 本発明の実施の形態２にかかる回転電機が備える回路基板を示す平面図である。It is a top view which shows the circuit board with which the rotary electric machine concerning Embodiment 2 of this invention is provided. 本発明の実施の形態３にかかる回転電機が備える回路基板を示す平面図である。It is a top view which shows the circuit board with which the rotary electric machine concerning Embodiment 3 of this invention is provided.

以下、図を用いて本発明の実施の形態について説明する。なお、各図中、同一又は相当する部分には、同一符号を付して、その説明を適宜省略又は簡略化する。また、実施の形態の説明において、「上」、「下」、「左」、「右」、「前」、「後」、「表」、「裏」といった向きは、説明の便宜上、そのように記しているだけであって、装置、器具、部品等の配置や向き等を限定するものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof is omitted or simplified as appropriate. In the description of the embodiment, the directions such as “top”, “bottom”, “left”, “right”, “front”, “back”, “front”, “back” are as such for convenience of explanation. However, it is not intended to limit the arrangement or orientation of devices, instruments, parts, or the like.

実施の形態１．
図１は、本発明の実施の形態１にかかる回転電機１を示す分解斜視図である。本実施の形態にかかる回転電機１は、ＤＣ（Ｄｉｒｅｃｔ Ｃｕｒｒｅｎｔ）ブラシレスモーターである。 Embodiment 1 FIG.
FIG. 1 is an exploded perspective view showing a rotating electrical machine 1 according to a first embodiment of the present invention. The rotating electrical machine 1 according to the present embodiment is a DC (Direct Current) brushless motor.

本発明の実施の形態１にかかる回転電機１の構成について説明する。図１に示すように、本実施の形態にかかる回転電機１は、ブラケット１１とフレーム２４とを主体とする筐体の内部に各要素が納められる。フレーム２４は、底面を有する円筒形状であり、金属製である。本実施の形態にかかる回転電機１は、筒状のステーター１９と、ステーター１９の内側に配置され、シャフト１５を軸として回転するローター１６と、外殻の一部を形成し、ローター１６の回転軸に垂直な平面において、回転軸から外側に向かう方向に垂直な方向の幅がシャフト１５の径以上であり、シャフト１４が貫通する凹部１２Ａを有する回路基板１２とを備える   A configuration of the rotating electrical machine 1 according to the first embodiment of the present invention will be described. As shown in FIG. 1, in the rotating electrical machine 1 according to the present embodiment, each element is housed in a housing mainly composed of a bracket 11 and a frame 24. The frame 24 has a cylindrical shape having a bottom surface and is made of metal. The rotating electrical machine 1 according to the present embodiment includes a cylindrical stator 19, a rotor 16 that is disposed inside the stator 19, rotates around a shaft 15, and forms a part of an outer shell. And a circuit board 12 having a recess 12 </ b> A through which the shaft 14 penetrates in a plane perpendicular to the axis and having a width in a direction perpendicular to the direction from the rotation axis to the outside.

本実施の形態にかかる回転電機１は、ステーター１９の上方に配置され、回路基板１２が固定される基板ケース１３と、ステーター１９と回路基板１２とを電気的に接続する端子１８とをさらに備える。また、本実施の形態にかかる回転電機１は、ローター１６よりもブラケット１１側に第１のベアリング１４を備え、ローター１６よりもフレーム２４側に第２のベアリング１７をさらに備える。   The rotating electrical machine 1 according to the present embodiment further includes a substrate case 13 that is disposed above the stator 19 and to which the circuit board 12 is fixed, and a terminal 18 that electrically connects the stator 19 and the circuit board 12. . The rotating electrical machine 1 according to the present embodiment further includes a first bearing 14 on the bracket 11 side with respect to the rotor 16 and further includes a second bearing 17 on the frame 24 side with respect to the rotor 16.

ステーター１９は、フレーム２４に圧入される。ステーター１９は、鉄心２０と、鉄心２０に巻き回された導線を主とするコイル２１と、基板ケース１３の軸方向（図１における上下方向）の位置決めを行い、基板ケース１３と鉄心２０又はコイル２１との電気的接続を遮断する絶縁体２２とを有する。本実施の形態においてステーター１９は、上下に開口を有する筒状である。   The stator 19 is press-fitted into the frame 24. The stator 19 performs positioning in the axial direction (vertical direction in FIG. 1) of the substrate case 13 and the substrate case 13 and the iron core 20 or the coil. And an insulator 22 that cuts off the electrical connection with 21. In the present embodiment, the stator 19 has a cylindrical shape having openings on the top and bottom.

図１に示すように、ローター１６は円環形状であり、シャフト１５はローター１６を上下方向に貫通する。本実施の形態において、シャフト１５の一端（図１において下側）は、フレーム２４の底面を貫通し、フレーム２４の外部に突出する。フレーム２４の外部に突出したシャフト１５の一端には、負荷が接続される。シャフト１５は、ローター１６に連結し、ローター１６の回転と共に回転するので、ローター１６の回転軸はシャフト１５の回転軸と一致する。また、ローター１６の回転軸及びシャフト１５の回転軸は、本実施の形態にかかる回転電機１の回転軸とも一致する。シャフト１５の回転は、シャフト１５の一端に接続された負荷に伝わる。   As shown in FIG. 1, the rotor 16 has an annular shape, and the shaft 15 penetrates the rotor 16 in the vertical direction. In the present embodiment, one end (lower side in FIG. 1) of the shaft 15 penetrates the bottom surface of the frame 24 and protrudes to the outside of the frame 24. A load is connected to one end of the shaft 15 protruding to the outside of the frame 24. Since the shaft 15 is connected to the rotor 16 and rotates with the rotation of the rotor 16, the rotation axis of the rotor 16 coincides with the rotation axis of the shaft 15. Further, the rotation axis of the rotor 16 and the rotation axis of the shaft 15 coincide with the rotation axis of the rotating electrical machine 1 according to the present embodiment. The rotation of the shaft 15 is transmitted to a load connected to one end of the shaft 15.

第１のベアリング１４及び第２のベアリング１７の中心にはシャフト１５が貫通し、第１のベアリング１４及び第２のベアリング１７は、シャフト１５を回転可能に保持する。第１のベアリング１４はブラケット１１に形成された第１のハウジング１０に保持され、第２のベアリング１７はフレーム２４に形成された第２のハウジング２３に保持される。   A shaft 15 passes through the center of the first bearing 14 and the second bearing 17, and the first bearing 14 and the second bearing 17 hold the shaft 15 rotatably. The first bearing 14 is held by a first housing 10 formed on the bracket 11, and the second bearing 17 is held by a second housing 23 formed on a frame 24.

図１において、第１のベアリング１４は基板ケース１３の下方に図示されているが、組み立てられた回転電機１において、第１のベアリング１４は、回路基板１２よりも上方に配置される。また、図１において、第２のベアリング１７はステーター１９の上方に図示されているが、組み立てられた回転電機１において、第２のベアリング１７は、ステーター１９よりも下方に配置される。   In FIG. 1, the first bearing 14 is illustrated below the board case 13, but in the assembled rotating electrical machine 1, the first bearing 14 is disposed above the circuit board 12. In FIG. 1, the second bearing 17 is illustrated above the stator 19, but in the assembled rotating electrical machine 1, the second bearing 17 is disposed below the stator 19.

基板ケース１３には、回路基板１２を位置決めして固定するための構造が設けられている。詳細は後述する。端子１８は、基板ケース１３を貫通し、回路基板１２とはんだ付け等により導電接続される。基板ケース１３は孔１３Ａを有し、孔１３Ａの直径は第１のベアリング１４の直径よりも大きい。   The board case 13 is provided with a structure for positioning and fixing the circuit board 12. Details will be described later. The terminal 18 penetrates the board case 13 and is conductively connected to the circuit board 12 by soldering or the like. The substrate case 13 has a hole 13 </ b> A, and the diameter of the hole 13 </ b> A is larger than the diameter of the first bearing 14.

次に、本実施の形態にかかる回転電機１が備える基板ケース１３について説明する。図２は、本発明の実施の形態１にかかる回転電機１が備える基板ケース１３を示す平面図である。本実施の形態にかかる回転電機１が備える基板ケース１３は、回路基板１２を固定するために用いられる複数の突起１３Ｂ及びねじ穴１３Ｃと、端子１８が貫通する貫通孔１３Ｄを有する。突起１３Ｂ、ねじ穴１３Ｃ及び貫通孔１３Ｄの数は、特に限定されない。   Next, the substrate case 13 provided in the rotating electrical machine 1 according to the present embodiment will be described. FIG. 2 is a plan view showing the substrate case 13 provided in the rotating electrical machine 1 according to the first embodiment of the present invention. The substrate case 13 provided in the rotating electrical machine 1 according to the present embodiment has a plurality of protrusions 13B and screw holes 13C used for fixing the circuit board 12, and a through hole 13D through which the terminal 18 passes. The numbers of the protrusions 13B, the screw holes 13C, and the through holes 13D are not particularly limited.

次に、本実施の形態にかかる回転電機１が備える回路基板１２について説明する。図３は、本発明の実施の形態１にかかる回転電機１が備える回路基板１２を示す平面図である。本実施の形態にかかる回転電機１が備える回路基板１２は、外殻の一部を形成し、ローター１６の回転軸に垂直な平面において、ローター１６の回転軸から外側に向かう方向に垂直な方向の幅がシャフト１５の径以上である凹部１２Ａと、基板ケース１３への固定に使用される複数の固定用切欠き１２Ｂ及びねじ穴１２Ｃと、端子１８が貫通する貫通孔１２Ｄを有する。固定用切欠き１２Ｂ、ねじ穴１２Ｃ及び貫通孔１２Ｄの数は、特に限定されない。   Next, the circuit board 12 with which the rotary electric machine 1 concerning this Embodiment is provided is demonstrated. FIG. 3 is a plan view showing the circuit board 12 included in the rotating electrical machine 1 according to the first embodiment of the present invention. The circuit board 12 included in the rotating electrical machine 1 according to the present embodiment forms a part of the outer shell, and is a direction perpendicular to the direction from the rotation axis of the rotor 16 to the outside in a plane perpendicular to the rotation axis of the rotor 16. Has a recess 12A whose width is equal to or larger than the diameter of the shaft 15, a plurality of fixing notches 12B and screw holes 12C used for fixing to the substrate case 13, and a through hole 12D through which the terminal 18 passes. The numbers of the fixing notches 12B, the screw holes 12C, and the through holes 12D are not particularly limited.

固定用切欠き１２Ｂは、ねじ穴１２Ｃと一体となっており、図３において、一点鎖線で囲まれた部分を示す。固定用切欠き１２Ｂと一体となっているねじ穴１２Ｃは、図３において点線で囲まれた部分である。   The fixing notch 12B is integrated with the screw hole 12C, and shows a portion surrounded by a one-dot chain line in FIG. The screw hole 12C integrated with the fixing notch 12B is a portion surrounded by a dotted line in FIG.

基板ケース１３に回路基板１２を固定する方法について説明する。本実施の形態では、まず、回路基板１２の固定用切り欠き１２Ｂに基板ケース１３の突起１３Ｂを嵌め合わせる。これにより、回路基板１２は、基板ケース１３に対する周方向及び径方向の位置決めが行われる。次に、ねじ穴１２Ｃ及びねじ穴１３Ｃにねじを挿入して、回路基板１２を基板ケース１３にねじ止めする。これにより、回路基板１２は基板ケース１３に固定される。   A method for fixing the circuit board 12 to the board case 13 will be described. In the present embodiment, first, the protrusion 13 </ b> B of the substrate case 13 is fitted into the fixing notch 12 </ b> B of the circuit board 12. Thereby, the circuit board 12 is positioned in the circumferential direction and the radial direction with respect to the board case 13. Next, screws are inserted into the screw holes 12 </ b> C and the screw holes 13 </ b> C, and the circuit board 12 is screwed to the board case 13. Thereby, the circuit board 12 is fixed to the board case 13.

本実施の形態にかかる回転電機１が備える回路基板１２には、コイル２１へ電流を流す駆動部、コイル２１へ流す電流を制御する制御部、コイル２１へ流す電流の供給源である電源部等の機能を構成する電子部品が搭載される。回路基板１２の電源部に外部電源を接続して電力を供給すると、駆動部は、制御部からの制御指令に基づいてコイル２１へ電流を流し、ローター１６を回転させるための駆動トルクを発生させる。   The circuit board 12 included in the rotating electrical machine 1 according to the present embodiment includes a drive unit that supplies current to the coil 21, a control unit that controls current that flows to the coil 21, a power supply unit that is a supply source of current that flows to the coil 21, and the like. The electronic components constituting the functions are mounted. When power is supplied by connecting an external power supply to the power supply unit of the circuit board 12, the drive unit causes a current to flow to the coil 21 based on a control command from the control unit, and generates a drive torque for rotating the rotor 16. .

駆動部としては、例えば、ワンチップインバータＩＣ（Ｉｎｔｅｇｒａｔｅｄ Ｃｉｒｃｕｉｔ）又はＩＧＢＴ（Ｉｎｓｕｌａｔｅｄ Ｇａｔｅ Ｂｉｐｏｌａｒ Ｔｒａｎｓｉｓｔｏｒ）等のディスクリート素子を６つと、モータードライバーＩＣとを組み合わせた三相ブリッジドライバを用いた構成がある。また、制御部としては、例えば、マイコンやプログラマブル・ロジック・コントローラ（ＰＬＣ：Ｐｒｏｇｒａｍｍａｂｌｅ Ｌｏｇｏｃ Ｃｏｎｔｒｏｌｌｅｒ）等を用いた構成がある。さらに、本実施の形態にかかる回転電機１が備える回路基板１２には、ローター１６の位置検出手段として、ホールＩＣが搭載される。   As the drive unit, for example, there is a configuration using a three-phase bridge driver in which six discrete elements such as a one-chip inverter IC (Integrated Circuit) or IGBT (Insulated Gate Bipolar Transistor) are combined with a motor driver IC. Moreover, as a control part, there exists a structure using a microcomputer, a programmable logic controller (PLC: Programmable Logic Controller), etc., for example. Further, a Hall IC is mounted as a position detection unit of the rotor 16 on the circuit board 12 provided in the rotating electrical machine 1 according to the present embodiment.

本実施の形態において、回路基板１２は基板ケース１３に対する周方向及び径方向の位置決めがされており、基板ケース１３は絶縁体２２によって軸方向の位置決めがされているので、回路基板１２に搭載されたホールＩＣはステーター１９に対して周方向、径方向及び軸方向の位置決めされている。そのため、本実施の形態にかかる回転電機１は、ローター１６の位置検出精度を向上させることができ、駆動制御性能を向上させることができる。   In this embodiment, the circuit board 12 is positioned in the circumferential direction and the radial direction with respect to the board case 13, and the board case 13 is positioned in the axial direction by the insulator 22, so that it is mounted on the circuit board 12. The Hall IC is positioned with respect to the stator 19 in the circumferential direction, radial direction and axial direction. Therefore, the rotating electrical machine 1 according to the present embodiment can improve the position detection accuracy of the rotor 16 and can improve the drive control performance.

本実施の形態にかかる回転電機１が備える回路基板１２の凹部１２Ａについて説明する。図３に示すように、凹部１２Ａの外郭は、円弧Ｃと直線Ｌ１と直線Ｌ２とを有する。本実施の形態において円弧Ｃは、直径が長さａである円の円周の半分である。本実施の形態において、直線Ｌ１の一端は、円弧Ｃの両端のうち一端に接続し、直線Ｌ２の一端は、円弧Ｃの両端のうち他端に接続する。直線Ｌ１の一端と直線Ｌ２の一端との間の距離は、長さａであり、直線Ｌ１の他端と直線Ｌ２の他端との間の距離も、長さａである。すなわち、直線Ｌ１と直線Ｌ２との間の距離は一定である。   The recessed part 12A of the circuit board 12 with which the rotary electric machine 1 concerning this Embodiment is provided is demonstrated. As shown in FIG. 3, the outline of the recess 12A has an arc C, a straight line L1, and a straight line L2. In the present embodiment, the arc C is half the circumference of a circle having a diameter a. In the present embodiment, one end of the straight line L1 is connected to one end of both ends of the arc C, and one end of the straight line L2 is connected to the other end of both ends of the arc C. The distance between one end of the straight line L1 and one end of the straight line L2 is the length a, and the distance between the other end of the straight line L1 and the other end of the straight line L2 is also the length a. That is, the distance between the straight line L1 and the straight line L2 is constant.

長さａは、シャフト１５の回転軸に垂直な方向における断面の直径、すなわちシャフト１５の太さ（径）以上であり、好ましくは、シャフト１５の回転軸に垂直な方向における断面の直径と同じである。図３における長さａは、シャフト１５の回転軸に垂直な方向における断面の直径と同じである。本実施の形態において、直線Ｌ１と直線Ｌ２とは同じ長さを有する。直線Ｌ１及び直線Ｌ２は、回路基板１２の半径である長さｂ以上の長さを有し、好ましくは、回路基板１２の半径と同じ長さである。図３に示すように、回路基板１２の角は面取りされるので、図３における直線Ｌ１及び直線Ｌ２の長さは、厳密には回路基板１２の半径よりも短いが、誤差の範囲内の差において回路基板１２の半径である長さｂと同じである。   The length a is not less than the diameter of the cross section in the direction perpendicular to the rotation axis of the shaft 15, that is, the thickness (diameter) of the shaft 15, and preferably the same as the diameter of the cross section in the direction perpendicular to the rotation axis of the shaft 15. It is. The length a in FIG. 3 is the same as the diameter of the cross section in the direction perpendicular to the rotation axis of the shaft 15. In the present embodiment, the straight line L1 and the straight line L2 have the same length. The straight line L1 and the straight line L2 have a length equal to or longer than the length b which is the radius of the circuit board 12, and preferably have the same length as the radius of the circuit board 12. As shown in FIG. 3, since the corners of the circuit board 12 are chamfered, the lengths of the straight line L1 and the straight line L2 in FIG. 3 are strictly shorter than the radius of the circuit board 12, but the difference within the error range. Is the same as the length b which is the radius of the circuit board 12.

本実施の形態にかかる回転電機１が備える回路基板１２の凹部１２Ａは、図３において、破線で囲まれた領域Ｘと、二点鎖線で囲まれた領域Ｙとで主に構成される。破線で囲まれた領域Ｘは、一部を円弧Ｃが形成し、直径が長さａである円の半分を示す。二点鎖線で囲まれた領域Ｙは、一部を直線Ｌ１と直線Ｌ２とが形成し、縦が長さａであり横が長さｂである長方形を示す。すなわち、本実施の形態において、回路基板１２の凹部１２Ａは、半円（領域Ｘ）と、幅がシャフト１５の回転軸から外側に向かう方向に向って一定である部分（領域Ｙ）とで主に構成される。   The recess 12A of the circuit board 12 included in the rotating electrical machine 1 according to the present embodiment is mainly composed of a region X surrounded by a broken line and a region Y surrounded by a two-dot chain line in FIG. A region X surrounded by a broken line indicates a half of a circle having a part formed by an arc C and having a diameter a. A region Y surrounded by an alternate long and two short dashes line is partly formed by a straight line L1 and a straight line L2, and indicates a rectangle having a length a and a width b. That is, in the present embodiment, the recess 12A of the circuit board 12 is mainly composed of a semicircle (region X) and a portion (region Y) whose width is constant in the direction from the rotation axis of the shaft 15 toward the outside. Configured.

円弧Ｃと直線Ｌ１と直線Ｌ２は、回路基板１２の外殻の一部でもあるので、凹部１２Ａは回路基板１２の外郭に接する。すなわち、回路基板１２の外郭のうち凹部１２Ａの外郭と共通する部分には、円弧Ｃと直線Ｌ１と直線Ｌ２とを有する。本実施の形態にかかる回転電機１が備える回路基板１２は、凹部１２Ａを有することによってＣ字型形状となっている。つまり、本実施の形態にかかる回転電機１が備える回路基板１２は、凹部１２Ａを形成するように円盤状の回路基板の外周を含む部分を切り欠いた形状となっている。   Since the arc C, the straight line L1, and the straight line L2 are also part of the outer shell of the circuit board 12, the recess 12A is in contact with the outline of the circuit board 12. In other words, the outer portion of the circuit board 12 has a circular arc C, a straight line L1, and a straight line L2 at a portion common to the outer portion of the recess 12A. The circuit board 12 provided in the rotating electrical machine 1 according to the present embodiment has a C-shaped shape by having a recess 12A. That is, the circuit board 12 included in the rotating electrical machine 1 according to the present embodiment has a shape in which a portion including the outer periphery of the disk-shaped circuit board is cut out so as to form the recess 12A.

次に、本実施の形態にかかる回転電機１の製造方法について説明する。本実施の形態にかかる回転電機１の製造方法は、ローター１６に連結されたシャフト１５に対して回路基板１２を組み付ける工程を備える。本実施の形態において、シャフト１５に対して回路基板１２を組み付ける際は、シャフト１５の回転軸に垂直な方向から、回路基板１２の凹部１２Ａにシャフト１５が挿入されるように、シャフト１５に対して回路基板１２を組み付ける。すなわち、シャフト１５の回転軸に垂直な方向に回路基板１２を移動させて、回路基板１２の凹部１２Ａにシャフト１５をはめ込む。   Next, the manufacturing method of the rotary electric machine 1 concerning this Embodiment is demonstrated. The manufacturing method of the rotating electrical machine 1 according to the present embodiment includes a step of assembling the circuit board 12 to the shaft 15 connected to the rotor 16. In the present embodiment, when the circuit board 12 is assembled to the shaft 15, the shaft 15 is inserted into the recess 12 </ b> A of the circuit board 12 from the direction perpendicular to the rotation axis of the shaft 15. Then, the circuit board 12 is assembled. That is, the circuit board 12 is moved in a direction perpendicular to the rotation axis of the shaft 15, and the shaft 15 is fitted into the recess 12 </ b> A of the circuit board 12.

このとき、凹部１２Ａの直線Ｌ１及び直線Ｌ２に沿って、本実施の形態にかかる回転電機１の回転軸に向かうようにシャフト１５が凹部１２Ａに挿入され、円弧Ｃにシャフト１５が接触することで、シャフト１５に対して回路基板１２を組み付ける作業が終了する。以上で、シャフト１５が回路基板１２の凹部１２Ａを貫通した状態となる。   At this time, the shaft 15 is inserted into the recessed portion 12A along the straight line L1 and the straight line L2 of the recessed portion 12A so as to go to the rotating shaft of the rotating electrical machine 1 according to the present embodiment, and the shaft 15 comes into contact with the arc C. The operation of assembling the circuit board 12 to the shaft 15 is completed. Thus, the shaft 15 is in a state of penetrating the recess 12A of the circuit board 12.

本実施の形態では、ローター１６に連結されたシャフト１５に対して回路基板１２を組み付ける工程において、シャフト１５の回転軸に垂直な方向から、回路基板１２の凹部１２Ａにシャフト１５が挿入されるように、シャフト１５に対して回路基板１２を組み付けるとしたが、シャフト１５の回転軸に平行な方向から、回路基板１２の凹部１２Ａにシャフト１５が挿入されるように、シャフト１５に対して回路基板１２を組み付けてもよい。すなわち、シャフト１５の回転軸に平行な方向に回路基板１２を移動させて、回路基板１２の凹部１２Ａにシャフト１５をはめ込んでもよい。もちろん、シャフト１５の回転軸に垂直な方向に回路基板１２を移動させる動作とシャフト１５の回転軸に平行な方向に回路基板１２を移動させる動作を組み合わせて、回路基板１２の凹部１２Ａにシャフト１５が挿入されるように、シャフト１５に対して回路基板１２を組み付けてもよい。   In the present embodiment, in the process of assembling the circuit board 12 to the shaft 15 connected to the rotor 16, the shaft 15 is inserted into the recess 12 </ b> A of the circuit board 12 from the direction perpendicular to the rotation axis of the shaft 15. In addition, the circuit board 12 is assembled to the shaft 15, but the circuit board is attached to the shaft 15 so that the shaft 15 is inserted into the recess 12 </ b> A of the circuit board 12 from the direction parallel to the rotation axis of the shaft 15. 12 may be assembled. That is, the circuit board 12 may be moved in a direction parallel to the rotation axis of the shaft 15, and the shaft 15 may be fitted into the recess 12 </ b> A of the circuit board 12. Of course, the operation of moving the circuit board 12 in the direction perpendicular to the rotation axis of the shaft 15 and the operation of moving the circuit board 12 in the direction parallel to the rotation axis of the shaft 15 are combined, and the shaft 15 is inserted into the recess 12A of the circuit board 12. The circuit board 12 may be assembled to the shaft 15 so that is inserted.

本実施の形態にかかる回転電機１の製造方法では、ローター１６に連結されたシャフト１５に対して回路基板１２を組み付ける前に、シャフト１５に第１のベアリング１４及び第２のベアリング１７を挿入することができる。そのため、本実施の形態において、シャフト１５に対して回路基板１２を組み付ける工程以外の工程を、従来と同様に行うことができるので、本実施の形態にかかる回転電機１の組み立て時の作業性が悪化することはない。   In the method of manufacturing the rotating electrical machine 1 according to the present embodiment, the first bearing 14 and the second bearing 17 are inserted into the shaft 15 before the circuit board 12 is assembled to the shaft 15 connected to the rotor 16. be able to. Therefore, in the present embodiment, steps other than the step of assembling the circuit board 12 with respect to the shaft 15 can be performed in the same manner as in the past, so that the workability at the time of assembling the rotating electrical machine 1 according to the present embodiment is improved. There is no deterioration.

本実施の形態にかかる回転電機１は、シャフト１５が貫通する凹部１２Ａが回路基板１２の外殻の一部を形成しているので、シャフト１５に対して回路基板１２を組み付ける際に、回路基板１２の凹部１２Ａに対するシャフト１５の位置決めが容易になる。そのため、本実施の形態では、容易に回転電機１を組み立てることができる。   In the rotating electrical machine 1 according to the present embodiment, the recess 12A through which the shaft 15 penetrates forms a part of the outer shell of the circuit board 12. Therefore, when the circuit board 12 is assembled to the shaft 15, the circuit board Positioning of the shaft 15 with respect to the twelve recesses 12A is facilitated. Therefore, in this embodiment, rotating electric machine 1 can be easily assembled.

本実施の形態にかかる回転電機１が奏する効果について、図３を用いて詳細に説明する。図３において、回路基板１２の凹部１２Ａは回路基板１２の外周を含む部分を切り欠いて形成されている。そのため、シャフト１５に対して回路基板１２を組み付ける工程において、シャフト１５は、本実施の形態にかかる回転電機１の回転軸よりも右側の領域への配置と、凹部１２Ａに合わせた図３における上下方向の位置決めとが行われる。   The effect which the rotary electric machine 1 concerning this Embodiment show | plays is demonstrated in detail using FIG. In FIG. 3, the recess 12 </ b> A of the circuit board 12 is formed by cutting out a portion including the outer periphery of the circuit board 12. Therefore, in the process of assembling the circuit board 12 to the shaft 15, the shaft 15 is arranged in the region on the right side of the rotating shaft of the rotating electrical machine 1 according to the present embodiment, and the top and bottom in FIG. Directional positioning is performed.

これは、シャフト１５に対して回路基板１２を組み付ける工程において、シャフト１５の回転軸に垂直な方向から、回路基板１２の凹部１２Ａにシャフト１５が挿入されるように、シャフト１５に対して回路基板１２を組み付ける場合であっても、シャフト１５の回転軸に平行な方向から、回路基板１２の凹部１２Ａにシャフト１５が挿入されるように、シャフト１５に対して回路基板１２を組み付ける場合であっても同じである。もちろん、シャフト１５の回転軸に垂直な方向に回路基板１２を移動させる動作とシャフト１５の回転軸に平行な方向に回路基板１２を移動させる動作を組み合わせて、回路基板１２の凹部１２Ａにシャフト１５が挿入されるように、シャフト１５に対して回路基板１２を組み付ける場合も同様である。   This is because, in the process of assembling the circuit board 12 with respect to the shaft 15, the circuit board with respect to the shaft 15 is inserted into the recess 12 </ b> A of the circuit board 12 from the direction perpendicular to the rotation axis of the shaft 15. 12 is a case where the circuit board 12 is assembled to the shaft 15 so that the shaft 15 is inserted into the recess 12A of the circuit board 12 from a direction parallel to the rotation axis of the shaft 15. Is the same. Of course, the operation of moving the circuit board 12 in the direction perpendicular to the rotation axis of the shaft 15 and the operation of moving the circuit board 12 in the direction parallel to the rotation axis of the shaft 15 are combined, and the shaft 15 is inserted into the recess 12A of the circuit board 12. The same applies to the case where the circuit board 12 is assembled to the shaft 15 so that is inserted.

一方、従来のように、シャフト１５が挿入される開口が回路基板の内側に形成された円形孔である場合（すなわち、回路基板が環形状であり、円形孔の外周が回路基板の内周に相当する場合）、シャフト１５に対して回路基板を組み付ける工程において、シャフト１５は、円形孔に合わせて、図３における上下方向及び左右方向の位置決めが行われる。本実施の形態においては左右方向の位置決めを行うが、本実施の形態では、シャフト１５を、本実施の形態にかかる回転電機１の回転軸よりも右側へ配置するだけでよく、円形孔に合わせた左右方向の位置決めよりも、シャフト１５の位置決めが容易である。したがって、本実施の形態にかかる回転電機１は、従来よりも、回路基板１２の凹部１２Ａに対するシャフト１５の位置決めが容易である。   On the other hand, when the opening into which the shaft 15 is inserted is a circular hole formed inside the circuit board as in the conventional case (that is, the circuit board is ring-shaped, and the outer periphery of the circular hole is the inner periphery of the circuit board). In a case where the circuit board is assembled to the shaft 15, the shaft 15 is positioned in the vertical direction and the horizontal direction in FIG. 3 in accordance with the circular hole. In this embodiment, positioning in the left-right direction is performed, but in this embodiment, the shaft 15 only needs to be arranged on the right side of the rotating shaft of the rotating electrical machine 1 according to this embodiment, and is aligned with the circular hole. The positioning of the shaft 15 is easier than the positioning in the left-right direction. Therefore, in the rotating electrical machine 1 according to the present embodiment, it is easier to position the shaft 15 with respect to the recess 12A of the circuit board 12 than in the related art.

また、従来のように、シャフト１５が挿入される開口が回路基板の内側に形成された円形孔である場合は、シャフト１５の回転軸に平行な方向から、回路基板の開口にシャフト１５が挿入されるように、シャフト１５に対して回路基板を組み付けることしかできなかった。一方、本実施の形態では、シャフト１５の回転軸に平行な方向からだけでなく垂直な方向から、回路基板１２の凹部１２Ａにシャフト１５が挿入されるように、シャフト１５に対して回路基板１２を組み付けることができる。すなわち、本実施の形態にかかる回転電機１は、組み立て方法の自由度も従来よりも高くなっている。したがって、本実施の形態にかかる回転電機１は、従来よりも容易に組み立てることができる。   Further, when the opening into which the shaft 15 is inserted is a circular hole formed inside the circuit board as in the prior art, the shaft 15 is inserted into the opening of the circuit board from a direction parallel to the rotation axis of the shaft 15. As can be seen, the circuit board could only be assembled to the shaft 15. On the other hand, in the present embodiment, the circuit board 12 is inserted into the shaft 15 so that the shaft 15 is inserted into the recess 12A of the circuit board 12 not only from a direction parallel to the rotation axis of the shaft 15 but also from a direction perpendicular thereto. Can be assembled. That is, in the rotating electrical machine 1 according to the present embodiment, the degree of freedom in the assembling method is higher than that in the related art. Therefore, the rotating electrical machine 1 according to the present embodiment can be assembled more easily than in the past.

さらに、本実施の形態にかかる回転電機１が備える回路基板１２の面積、すなわち回路基板１２上に電子部品を搭載できる面積は、従来の回路基板よりも広い。従来は、シャフト１５が挿入される開口は第１のベアリング１４の直径ｃよりも大きい直径を有する円形孔であったので、シャフト１５が挿入される従来の開口は、ｃ２π／４以上の面積を有する。 Furthermore, the area of the circuit board 12 included in the rotating electrical machine 1 according to the present embodiment, that is, the area where electronic components can be mounted on the circuit board 12, is wider than that of the conventional circuit board. Conventionally, since the opening into which the shaft 15 is inserted is a circular hole having a diameter larger than the diameter c of the first bearing 14, the conventional opening into which the shaft 15 is inserted has c 2 π / 4 or more. Has an area.

一方、本実施の形態にかかる回転電機１が備える回路基板１２の凹部１２Ａは、図３より、ａ２π／８と、ａ×ｂとを足し合わせた面積を有する。ａ２π／８は、図３において破線で囲まれた領域Ｘの面積を示す。ａ×ｂは、図３において二点鎖線で囲まれた領域Ｙの面積を示す。 On the other hand, the recess 12A of the circuit board 12 to the rotary electric machine 1 according to the present embodiment comprises has from 3, and a 2 π / 8, the area corresponding to the sum and a × b. a 2 π / 8 indicates the area of the region X surrounded by a broken line in FIG. a × b indicates the area of a region Y surrounded by a two-dot chain line in FIG.

ここで、一般に、第１のベアリング１４の直径ｃは、シャフト１５の直径よりも３倍大きいので、ｃ＝３ａである。また、一般的に、回路基板１２の直径は、シャフト１５の直径よりも９倍大きいので、ｂ＝９ａ／２である。なお、第１のベアリング１４の直径ｃ、回路基板１２の直径及びシャフト１５の直径ａは、回転電機１の出力に比例するため、それぞれの寸法比が著しく崩れることはない。   Here, in general, since the diameter c of the first bearing 14 is three times larger than the diameter of the shaft 15, c = 3a. In general, the diameter of the circuit board 12 is 9 times larger than the diameter of the shaft 15, so b = 9a / 2. In addition, since the diameter c of the first bearing 14, the diameter of the circuit board 12, and the diameter a of the shaft 15 are proportional to the output of the rotating electrical machine 1, their dimensional ratios do not significantly collapse.

したがって、シャフト１５が挿入される従来の開口は、９ａ２π／４以上の面積を有する。本実施の形態にかかる回転電機１が備える回路基板１２の凹部１２Ａは、ａ２（３６＋π）／８の面積を有する。ここで、π＝３．１４として計算すると、シャフト１５が挿入される従来の開口は、７．０６５ａ２以上の面積を有し、本実施の形態にかかる回転電機１が備える回路基板１２の凹部１２Ａは、４．８９２５ａ２の面積を有する。つまり、シャフト１５が挿入される従来の開口は、本実施の形態にかかる回転電機１が備える回路基板１２の凹部１２Ａよりも面積が広い。すなわち、従来の回路基板は、本実施の形態にかかる回転電機１が備える回路基板１２よりも面積が狭い。 Therefore, the conventional opening into which the shaft 15 is inserted has an area of 9a 2 π / 4 or more. Recess 12A of circuit board 12 included in rotating electrical machine 1 according to the present embodiment has an area of a 2 (36 + π) / 8. Here, when calculated as π = 3.14, the conventional opening into which the shaft 15 is inserted has an area of 7.065a 2 or more, and the concave portion of the circuit board 12 included in the rotating electrical machine 1 according to the present embodiment. 12A has an area of 4.8925a 2. That is, the conventional opening into which the shaft 15 is inserted has a larger area than the recess 12A of the circuit board 12 provided in the rotating electrical machine 1 according to the present embodiment. That is, the conventional circuit board has a smaller area than the circuit board 12 included in the rotating electrical machine 1 according to the present embodiment.

つまり、本実施の形態にかかる回転電機１が備える回路基板１２の面積、すなわち回路基板１２上に電子部品を搭載できる面積は、従来の回路基板よりも広い。そのため、本実施の形態では、回路基板１２上に電子部品を実装する際に、電子部品間の距離を十分に離すことができる。そのため、本実施の形態にかかる回転電機１は、従来よりも、回路基板１２上に電子部品を実装し易くなる他、水分や塵埃による回路基板１２上での電気的ショートを防ぐことができる。また、回路基板１２上の電子部品間の距離を十分に離すことができるので、従来よりも、回路基板１２の放熱性を向上させることができる。   That is, the area of the circuit board 12 included in the rotating electrical machine 1 according to the present embodiment, that is, the area where electronic components can be mounted on the circuit board 12, is wider than that of the conventional circuit board. Therefore, in the present embodiment, when electronic components are mounted on the circuit board 12, the distance between the electronic components can be sufficiently separated. Therefore, the rotating electrical machine 1 according to the present embodiment can more easily mount electronic components on the circuit board 12 than before, and can prevent an electrical short circuit on the circuit board 12 due to moisture and dust. Moreover, since the distance between the electronic components on the circuit board 12 can be sufficiently separated, the heat dissipation of the circuit board 12 can be improved as compared with the conventional art.

ここで、従来の回路基板よりも面積を広げるために、シャフト１５が挿入される開口を、シャフト１５の直径と同じ直径を有し、回路基板の内側に形成された円形孔とする場合を考える。この場合、ローター１６に連結されたシャフト１５に回路基板を取り付けた後に、第１のベアリング１４をシャフト１５に挿入することとなる。しかしながら、シャフト１５に回路基板を取り付けた後に、第１のベアリング１４を挿入するのは、作業性が悪い。なぜなら、シャフト１５に回路基板を取り付けてしまった後では、スペースが狭いために、シャフト１５を治具等で受けることが困難だからである。   Here, in order to expand the area as compared with the conventional circuit board, consider a case where the opening into which the shaft 15 is inserted is a circular hole having the same diameter as the shaft 15 and formed inside the circuit board. . In this case, after the circuit board is attached to the shaft 15 connected to the rotor 16, the first bearing 14 is inserted into the shaft 15. However, it is not easy to insert the first bearing 14 after the circuit board is attached to the shaft 15. This is because it is difficult to receive the shaft 15 with a jig or the like because the space is narrow after the circuit board is attached to the shaft 15.

一方、本実施の形態では、第１のベアリング１４をシャフト１５に挿入してから、シャフト１５に回路基板１２を取り付けることができる。なぜなら、シャフト１５に対して回路基板１２を組み付ける工程において、シャフト１５の回転軸に垂直な方向から、回路基板１２の凹部１２Ａにシャフト１５が挿入されるように、シャフト１５に対して回路基板１２を組み付けることができるからである。そのため、シャフト１５に対して回路基板１２を組み付ける工程以外の工程を、従来と同様に行うことができるので、本実施の形態にかかる回転電機１の組み立て時の作業性が従来よりも悪化することはない。   On the other hand, in the present embodiment, the circuit board 12 can be attached to the shaft 15 after the first bearing 14 is inserted into the shaft 15. This is because, in the process of assembling the circuit board 12 to the shaft 15, the circuit board 12 is inserted into the shaft 15 so that the shaft 15 is inserted into the recess 12 </ b> A of the circuit board 12 from the direction perpendicular to the rotation axis of the shaft 15. This is because it can be assembled. Therefore, since steps other than the step of assembling the circuit board 12 to the shaft 15 can be performed in the same manner as in the past, workability at the time of assembling the rotating electrical machine 1 according to the present embodiment is worse than in the past. There is no.

さらに、従来の回路基板よりも面積を広げるために、回路基板にシャフト１５や第１のベアリング１４を挿入する開口を設けずに、回転電機を組み立てることを考える。この場合、回路基板にシャフト１５や第１のベアリング１４を挿入する開口がないので、回路基板、シャフト１５、第１のベアリング１４の機能を保つために、回転電機全体の構成を変える必要があり、回転電機の部品数が多くなる。そのため、回路基板の外形のサイズが変わらなくても、回転電機全体のサイズが大きくなる。一方、本実施の形態にかかる回転電機１は、回路基板１２が有する凹部１２Ａの形状が従来と異なるが、部品数は変わらないので、本実施の形態にかかる回転電機１全体のサイズが大きくなることはない。   Further, in order to expand the area as compared with the conventional circuit board, it is considered that the rotating electric machine is assembled without providing an opening for inserting the shaft 15 and the first bearing 14 in the circuit board. In this case, since there is no opening for inserting the shaft 15 and the first bearing 14 in the circuit board, it is necessary to change the configuration of the entire rotating electric machine in order to maintain the functions of the circuit board, the shaft 15 and the first bearing 14. The number of parts of the rotating electrical machine increases. For this reason, even if the size of the outer shape of the circuit board does not change, the size of the entire rotating electrical machine increases. On the other hand, in the rotating electrical machine 1 according to the present embodiment, the shape of the recess 12A of the circuit board 12 is different from the conventional one, but the number of parts is not changed, so the size of the entire rotating electrical machine 1 according to the present embodiment is increased. There is nothing.

また、従来は、リード線引き回し用の開口を、シャフト１５が挿入される開口とは別に回路基板に形成していたが、本実施の形態にかかる回転電機１が備える回路基板１２の凹部１２Ａは、リード線引き回し用としても使用できる。そのため、本実施の形態にかかる回転電機１が備える回路基板１２の面積は、リード線引き回し用の開口を別に形成しない分、従来の回路基板よりも広い。   Conventionally, the lead wire routing opening is formed in the circuit board separately from the opening into which the shaft 15 is inserted. However, the recess 12A of the circuit board 12 included in the rotating electrical machine 1 according to the present embodiment is It can also be used for lead wire routing. Therefore, the area of the circuit board 12 provided in the rotating electrical machine 1 according to the present embodiment is wider than that of the conventional circuit board because the lead wire routing opening is not separately formed.

図４は、本実施の形態にかかる回転電機１を備えた換気扇４０を示す断面図である。図４に示すように、換気扇４０の筐体内には、図１に示した本実施の形態にかかる回転電機１であるＤＣブラシレスモーターが搭載される。本実施の形態にかかる回転電機１の一端には送風機４１が接続され、送風機４１は本実施の形態にかかる回転電機１によって駆動される。上述したように、本実施の形態にかかる回転電機１のフレーム２４に外部に突出したシャフト１５の一端には、負荷が接続される。送風機４１は、本実施の形態にかかる回転電機１のフレーム２４の外部に突出したシャフト１５の一端に接続した負荷である。   FIG. 4 is a cross-sectional view showing a ventilation fan 40 including the rotating electrical machine 1 according to the present embodiment. As shown in FIG. 4, a DC brushless motor that is the rotating electrical machine 1 according to the present embodiment shown in FIG. 1 is mounted in the housing of the ventilation fan 40. A blower 41 is connected to one end of the rotating electrical machine 1 according to the present embodiment, and the blower 41 is driven by the rotating electrical machine 1 according to the present embodiment. As described above, a load is connected to one end of the shaft 15 that protrudes to the outside of the frame 24 of the rotating electrical machine 1 according to the present embodiment. The blower 41 is a load connected to one end of the shaft 15 protruding to the outside of the frame 24 of the rotating electrical machine 1 according to the present embodiment.

本実施の形態にかかる回転電機１を備えた換気扇４０の筐体は、天井板４３に埋込設置された後、グリル４２が下から取り付けられる。本実施の形態にかかる回転電機１を通電駆動すると、駆動トルクが回転電機１に発生し、回転電機１は送風機４１を回転させる。送風機４１が回転すると、図４において矢印で示した空気の流れＷが発生する。   The casing of the ventilation fan 40 provided with the rotary electric machine 1 according to the present embodiment is embedded in the ceiling plate 43, and then the grill 42 is attached from below. When the rotating electrical machine 1 according to the present embodiment is energized and driven, a driving torque is generated in the rotating electrical machine 1 and the rotating electrical machine 1 rotates the blower 41. When the blower 41 rotates, an air flow W indicated by an arrow in FIG. 4 is generated.

本実施の形態では、本実施の形態にかかる回転電機１の例として、ＤＣブラシレスモーターを説明したが、これに限ることはない。本実施の形態にかかる回転電機１は、回路基板１２を内蔵するようなモーター、発電機であればよい。本実施の形態にかかる回転電機１は、ローター１６に電流を流すことによってローター１６が回転すればモーターになり、ローター１６を回転させることでローターに電流が流れ、その電流を取り出すようにすれば発電機になる。モーターの種類としては例えば、ブラシ付きモーターやステッピングモーター、誘導電動機、同期電動機等が考えられ、発電機の種類としては例えば、誘導発電機、同期発電機等が考えられる。   In the present embodiment, a DC brushless motor has been described as an example of the rotating electrical machine 1 according to the present embodiment, but the present invention is not limited to this. The rotating electrical machine 1 according to the present embodiment may be a motor or a generator that incorporates the circuit board 12. The rotating electrical machine 1 according to the present embodiment becomes a motor when the rotor 16 rotates by passing an electric current through the rotor 16, and an electric current flows through the rotor by rotating the rotor 16, and the current is taken out. Become a generator. Examples of the motor type include a brushed motor, a stepping motor, an induction motor, and a synchronous motor. Examples of the generator type include an induction generator and a synchronous generator.

実施の形態２．
次に、本発明の実施の形態２にかかる回転電機について説明する。本発明の実施の形態２では、本発明の実施の形態１と相違する部分について説明し、同一又は対応する部分についての説明は省略する。本発明の実施の形態２にかかる回転電機は、本発明の実施の形態１にかかる回転電機１とは、回路基板が有する開口の形状が異なる。本発明の実施の形態２では、回路基板３２が有する凹部３２Ａに逃げ部が設けられる。 Embodiment 2. FIG.
Next, a rotating electrical machine according to the second embodiment of the present invention will be described. In the second embodiment of the present invention, portions that are different from the first embodiment of the present invention will be described, and descriptions of the same or corresponding portions will be omitted. The rotating electrical machine according to the second embodiment of the present invention differs from the rotating electrical machine 1 according to the first embodiment of the present invention in the shape of the opening of the circuit board. In the second embodiment of the present invention, a relief portion is provided in the recess 32A of the circuit board 32.

図５は、本発明の実施の形態２にかかる回転電機が備える回路基板３２を示す平面図である。本実施の形態にかかる回転電機が備える回路基板３２は、外殻の一部を形成し、ローター１６の回転軸に垂直な平面において、ローター１６の回転軸から外側に向かう方向に垂直な方向の幅がシャフト１５の径以上であり、シャフト１５が貫通する凹部３２Ａを有する。図５に示すように、凹部３２Ａの外郭は、円弧Ｃと直線Ｌ３１と直線Ｌ３２と直線Ｌ３３と直線Ｌ３４とを含む。本実施の形態にかかる回転電機が備える回路基板３２の凹部３２Ａは、破線で囲まれた領域Ｘと、二点鎖線で囲まれた領域Ｙと、点線で囲まれた２つの領域Ｚとで主に構成される。   FIG. 5 is a plan view showing a circuit board 32 provided in the rotating electrical machine according to the second embodiment of the present invention. The circuit board 32 provided in the rotating electrical machine according to the present embodiment forms a part of the outer shell, and in a plane perpendicular to the rotation axis of the rotor 16, a direction perpendicular to the direction from the rotation axis of the rotor 16 to the outside. The width is equal to or larger than the diameter of the shaft 15, and a recess 32 </ b> A through which the shaft 15 passes is provided. As shown in FIG. 5, the outline of the recess 32A includes an arc C, a straight line L31, a straight line L32, a straight line L33, and a straight line L34. The recess 32A of the circuit board 32 included in the rotating electrical machine according to the present embodiment is mainly composed of a region X surrounded by a broken line, a region Y surrounded by a two-dot chain line, and two regions Z surrounded by a dotted line. Configured.

円弧Ｃと直線Ｌ３１と直線Ｌ３２と直線Ｌ３３と直線Ｌ３４は、回路基板３２の外殻の一部でもあるので、凹部３２Ａは回路基板３２の外郭に接する。すなわち、回路基板３２の外郭のうち凹部３２Ａの外郭と共通する部分には、円弧Ｃと直線Ｌ３１と直線Ｌ３２と直線Ｌ３３と直線Ｌ３４とを有する。本実施の形態にかかる回転電機が備える回路基板３２は、凹部３２Ａを有することによってＣ字型形状となっている。つまり、本実施の形態にかかる回転電機が備える回路基板３２は、凹部３２Ａを形成するように円盤状の回路基板を切り欠いた形状となっている。   Since the arc C, the straight line L31, the straight line L32, the straight line L33, and the straight line L34 are also part of the outer shell of the circuit board 32, the concave portion 32A is in contact with the outline of the circuit board 32. That is, a portion of the outline of the circuit board 32 that is common to the outline of the recess 32A has an arc C, a straight line L31, a straight line L32, a straight line L33, and a straight line L34. The circuit board 32 provided in the rotating electrical machine according to the present embodiment has a C-shaped shape by having a recess 32A. That is, the circuit board 32 included in the rotating electrical machine according to the present embodiment has a shape in which a disk-shaped circuit board is cut out so as to form the recess 32A.

本実施の形態において円弧Ｃは、直径が長さａである円の円周の半分である。本実施の形態において、直線Ｌ３１の一端は、円弧Ｃの両端のうち一端に接続し、直線Ｌ３２の一端は、円弧Ｃの両端のうち他端に接続する。直線Ｌ３１の他端は、直線Ｌ３３の一端に接続し、直線Ｌ３３の他端は、直線Ｌ３４の一端に接続する。直線Ｌ３１の一端と直線Ｌ３２の一端との間の距離は、長さａであり、直線Ｌ３１の他端と直線Ｌ３２の他端との間の距離も長さａである。本実施の形態において、直線Ｌ３３の一端と直線Ｌ３４の一端との間の距離は、長さａであるが、直線Ｌ３３の他端と直線Ｌ３４の他端との間の距離は、長さａよりも長い。すなわち、直線Ｌ３３と直線Ｌ３４との間の距離は、直線Ｌ３１と直線Ｌ３２との間の距離以上である。   In the present embodiment, the arc C is half the circumference of a circle having a diameter a. In the present embodiment, one end of the straight line L31 is connected to one end of both ends of the arc C, and one end of the straight line L32 is connected to the other end of both ends of the arc C. The other end of the straight line L31 is connected to one end of the straight line L33, and the other end of the straight line L33 is connected to one end of the straight line L34. The distance between one end of the straight line L31 and one end of the straight line L32 is the length a, and the distance between the other end of the straight line L31 and the other end of the straight line L32 is also the length a. In the present embodiment, the distance between one end of the straight line L33 and one end of the straight line L34 is the length a, but the distance between the other end of the straight line L33 and the other end of the straight line L34 is the length a. Longer than. That is, the distance between the straight line L33 and the straight line L34 is not less than the distance between the straight line L31 and the straight line L32.

つまり、本実施の形態において、回路基板３２の凹部３２Ａは、半円（領域Ｘ）と、幅がシャフト１５の回転軸から外側に向かう方向に一定である部分（領域Ｙ）と、幅がシャフト１５の回転軸から外側に向かうに従って広くなる部分（領域Ｚ）とで主に構成される。   That is, in the present embodiment, the recess 32A of the circuit board 32 has a semicircle (region X), a portion (region Y) whose width is constant in the direction from the rotation axis of the shaft 15, and a width of the shaft 32. It is comprised mainly by the part (area | region Z) which becomes large as it goes outside from the 15 rotating shaft.

本実施の形態にかかる回転電機の製造方法は、本発明の実施の形態１と同様である。本実施の形態にかかる回転電機の製造方法は、ローター１６に連結されたシャフト１５に対して回路基板３２を組み付ける工程を備える。本実施の形態において、シャフト１５に対して回路基板３２を組み付ける際は、シャフト１５の回転軸に垂直な方向から、回路基板３２の凹部３２Ａにシャフト１５が挿入されるように、シャフト１５に対して回路基板３２を組み付ける。すなわち、シャフト１５の回転軸に垂直な方向に回路基板３２を移動させて、回路基板３２の凹部３２Ａにシャフト１５をはめ込む。   The manufacturing method of the rotating electrical machine according to the present embodiment is the same as that of the first embodiment of the present invention. The manufacturing method of the rotating electrical machine according to the present embodiment includes a step of assembling the circuit board 32 to the shaft 15 connected to the rotor 16. In the present embodiment, when the circuit board 32 is assembled to the shaft 15, the shaft 15 is inserted into the recess 32 </ b> A of the circuit board 32 from the direction perpendicular to the rotation axis of the shaft 15. Then, the circuit board 32 is assembled. That is, the circuit board 32 is moved in a direction perpendicular to the rotation axis of the shaft 15, and the shaft 15 is fitted into the recess 32 </ b> A of the circuit board 32.

このとき、凹部３２Ａの直線Ｌ３１及び直線Ｌ３２に沿って、本実施の形態にかかる回転電機の回転軸及び円弧Ｃに向かうようにシャフト１５が凹部３２Ａに挿入され、円弧Ｃにシャフト１５が接触することで、シャフト１５に対して回路基板１２を組み付ける作業が終了する。以上で、シャフト１５が回路基板３２の凹部３２Ａを貫通した状態となる。凹部３２Ａの直線Ｌ３３及び直線Ｌ３４は、直線Ｌ３１及び直線Ｌ３２に沿って、シャフト１５が本実施の形態にかかる回転電機の回転軸及び円弧Ｃに向かうように、ガイドの役割を果たす。   At this time, along the straight line L31 and straight line L32 of the concave portion 32A, the shaft 15 is inserted into the concave portion 32A so as to go to the rotation axis and the circular arc C of the rotating electrical machine according to the present embodiment, and the shaft 15 contacts the circular arc C. Thus, the work of assembling the circuit board 12 to the shaft 15 is completed. Thus, the shaft 15 is in a state of penetrating the recess 32A of the circuit board 32. The straight line L33 and the straight line L34 of the recess 32A serve as a guide so that the shaft 15 is directed to the rotation axis and the arc C of the rotating electrical machine according to the present embodiment along the straight line L31 and the straight line L32.

本実施の形態にかかる回転電機が備える回路基板３２の凹部３２Ａは、本発明の実施の形態１にかかる回転電機１が備える回路基板１２の凹部１２Ａよりも、２つの領域Ｚの面積分広い。２つの領域Ｚは逃げ部であり、シャフト１５に対して回路基板３２を組み付ける際において、シャフト１５の図５における上下方向の位置決めを本発明の実施の形態１よりも容易にする。凹部３２Ａに２つの領域Ｚを設けることによって、回路基板３２の凹部３２Ａにおいて、本実施の形態にかかる回転電機の回転軸から遠い方の端部の幅が、シャフト１５の直径よりも広くなるからである。   The recess 32A of the circuit board 32 included in the rotating electrical machine according to the present embodiment is wider by the area of the two regions Z than the recess 12A of the circuit board 12 included in the rotating electrical machine 1 according to the first embodiment of the present invention. The two regions Z are escape portions, and when the circuit board 32 is assembled to the shaft 15, the vertical positioning of the shaft 15 in FIG. 5 is made easier than in the first embodiment of the present invention. By providing the two regions Z in the recess 32A, the width of the end portion far from the rotating shaft of the rotating electrical machine according to the present embodiment is wider than the diameter of the shaft 15 in the recess 32A of the circuit board 32. It is.

したがって、本実施の形態では、回路基板３２の凹部３２Ａに対するシャフト１５の位置決めが容易であるので、本実施の形態にかかる回転電機は、容易に組み立てることができる。もちろん、本実施の形態でも、本発明の実施の形態１と同様に、回転電機の組み立て方法の自由度が従来よりも高くなっていることは言うまでもない。また、本実施の形態では、第１のベアリング１４をシャフト１５に挿入してから、シャフト１５に回路基板３２を取り付けることができるので、シャフト１５に対して回路基板３２を組み付ける工程以外の工程を、従来と同様に行うことができ、本実施の形態にかかる回転電機１の組み立て時の作業性が従来よりも悪化することはない。   Therefore, in the present embodiment, since the positioning of the shaft 15 with respect to the recess 32A of the circuit board 32 is easy, the rotating electrical machine according to the present embodiment can be easily assembled. Of course, in this embodiment as well, as in the first embodiment of the present invention, it is needless to say that the degree of freedom of the method of assembling the rotating electrical machine is higher than that of the conventional one. In the present embodiment, since the circuit board 32 can be attached to the shaft 15 after the first bearing 14 is inserted into the shaft 15, processes other than the process of assembling the circuit board 32 to the shaft 15 are performed. This can be performed in the same manner as in the prior art, and the workability at the time of assembling the rotating electrical machine 1 according to the present embodiment does not deteriorate as compared with the prior art.

本実施の形態にかかる回転電機が備える回路基板３２の凹部３２Ａは、本発明の実施の形態１にかかる回転電機１が備える回路基板１２の凹部１２Ａよりも、２つの領域Ｚの面積分広くなっている。しかしながら、本実施の形態にかかる回転電機が備える回路基板３２の面積も、２つの領域Ｚの設計次第で、従来の回路基板より広く設計することは可能である。また、本実施の形態にかかる回転電機は、回路基板３２が有する凹部３２Ａの形状が従来と異なるが、部品数は変わらないので、本実施の形態にかかる回転電機全体のサイズが大きくなることはない。   The recess 32A of the circuit board 32 included in the rotating electrical machine according to the present embodiment is wider by the area of the two regions Z than the recess 12A of the circuit board 12 included in the rotating electrical machine 1 according to the first embodiment of the present invention. ing. However, the area of the circuit board 32 provided in the rotating electrical machine according to the present embodiment can also be designed wider than the conventional circuit board depending on the design of the two regions Z. Further, in the rotating electrical machine according to the present embodiment, the shape of the recess 32A of the circuit board 32 is different from the conventional one, but the number of parts is not changed, so that the size of the entire rotating electrical machine according to the present embodiment is increased. Absent.

実施の形態３．
次に、本発明の実施の形態３にかかる回転電機について説明する。本発明の実施の形態３では、本発明の実施の形態１及び本発明の実施の形態２と相違する部分について説明し、同一又は対応する部分についての説明は省略する。本発明の実施の形態３にかかる回転電機は、本発明の実施の形態１にかかる回転電機１及び本発明の実施の形態２にかかる回転電機とは、回路基板が有する開口の形状が異なる。本発明の実施の形態３において、回路基板５２が有する凹部５２Ａは、半円と、幅がシャフト１５の回転軸から外側に向かうに従って広くなる部分とで主に構成される。 Embodiment 3 FIG.
Next, a rotating electrical machine according to the third embodiment of the present invention will be described. In the third embodiment of the present invention, portions that are different from the first embodiment of the present invention and the second embodiment of the present invention will be described, and description of the same or corresponding portions will be omitted. The rotating electrical machine according to the third embodiment of the present invention differs from the rotating electrical machine 1 according to the first embodiment of the present invention and the rotating electrical machine according to the second embodiment of the present invention in the shape of the opening of the circuit board. In the third embodiment of the present invention, the recess 52 </ b> A included in the circuit board 52 is mainly configured by a semicircle and a portion whose width becomes wider from the rotation axis of the shaft 15 toward the outside.

図６は、本発明の実施の形態３にかかる回転電機が備える回路基板５２を示す平面図である。本実施の形態にかかる回転電機が備える回路基板５２は、外殻の一部を形成し、ローター１６の回転軸に垂直な平面において、ローター１６の回転軸から外側に向かう方向に垂直な方向の幅がシャフト１５の径以上であり、シャフト１５が貫通する凹部５２Ａを有する。図６に示すように、凹部５２Ａの外郭は、円弧Ｃと直線Ｌ５１と直線Ｌ５２とを有する。本実施の形態にかかる回転電機が備える回路基板５２の凹部５２Ａは、破線で囲まれた領域Ｘと、二点鎖線で囲まれた領域Ｓとで主に構成される。   FIG. 6 is a plan view showing a circuit board 52 provided in the rotating electrical machine according to the third embodiment of the present invention. The circuit board 52 included in the rotating electrical machine according to the present embodiment forms a part of the outer shell, and in a plane perpendicular to the rotation axis of the rotor 16, a direction perpendicular to the direction from the rotation axis of the rotor 16 to the outside. The width is equal to or larger than the diameter of the shaft 15, and a recess 52 </ b> A through which the shaft 15 passes is provided. As shown in FIG. 6, the outline of the recess 52A includes an arc C, a straight line L51, and a straight line L52. The recess 52A of the circuit board 52 provided in the rotating electrical machine according to the present embodiment is mainly configured by a region X surrounded by a broken line and a region S surrounded by a two-dot chain line.

円弧Ｃと直線Ｌ３１と直線Ｌ３２は、回路基板５２の外殻の一部でもあるので、凹部５２Ａは回路基板５２の外郭に接する。すなわち、回路基板５２の外郭のうち凹部５２Ａの外郭と共通する部分には、円弧Ｃと直線Ｌ５１と直線Ｌ５２とを有する。本実施の形態にかかる回転電機が備える回路基板５２は、凹部５２Ａを有することによってＣ字型形状となっている。つまり、本実施の形態にかかる回転電機が備える回路基板５２は、凹部５２Ａを形成するように円盤状の回路基板を切り欠いた形状となっている。   Since the arc C, the straight line L31, and the straight line L32 are also part of the outer shell of the circuit board 52, the recess 52A is in contact with the outline of the circuit board 52. That is, a portion of the outline of the circuit board 52 that is common to the outline of the recess 52A has an arc C, a straight line L51, and a straight line L52. The circuit board 52 provided in the rotating electrical machine according to the present embodiment has a C-shaped shape by having a recess 52A. That is, the circuit board 52 provided in the rotating electrical machine according to the present embodiment has a shape in which a disk-shaped circuit board is cut out so as to form the recess 52A.

本実施の形態において円弧Ｃは、直径が長さａである円の円周の半分である。本実施の形態において、直線Ｌ５１の一端は、円弧Ｃの両端のうち一端に接続し、直線Ｌ５２の一端は、円弧Ｃの両端のうち他端に接続する。本実施の形態において、直線Ｌ５１の一端と直線Ｌ５２の一端との間の距離は、長さａであるが、直線Ｌ５１の他端と直線Ｌ５２の他端との間の距離は、長さａよりも長い。すなわち、直線Ｌ５１と直線Ｌ５２との間の距離は、シャフト１５の回転軸から外側に向かうに従って広くなる。つまり、本実施の形態において、回路基板５２の凹部５２Ａは、半円（領域Ｘ）と、幅がシャフト１５の回転軸から外側に向かうに従って広くなる部分（領域Ｓ）とで主に構成される。   In the present embodiment, the arc C is half the circumference of a circle having a diameter a. In the present embodiment, one end of the straight line L51 is connected to one end of both ends of the arc C, and one end of the straight line L52 is connected to the other end of both ends of the arc C. In the present embodiment, the distance between one end of the straight line L51 and one end of the straight line L52 is the length a, but the distance between the other end of the straight line L51 and the other end of the straight line L52 is the length a. Longer than. That is, the distance between the straight line L51 and the straight line L52 becomes wider from the rotation axis of the shaft 15 toward the outside. That is, in the present embodiment, the recess 52A of the circuit board 52 is mainly configured by a semicircle (region X) and a portion (region S) whose width becomes wider from the rotation axis of the shaft 15 toward the outside. .

本実施の形態にかかる回転電機の製造方法は、本発明の実施の形態１及び本発明の実施の形態２と同様である。本実施の形態にかかる回転電機の製造方法は、ローター１６に連結されたシャフト１５に対して回路基板５２を組み付ける工程を備える。本実施の形態において、シャフト１５に対して回路基板５２を組み付ける際は、シャフト１５の回転軸に垂直な方向から、回路基板５２の凹部５２Ａにシャフト１５が挿入されるように、シャフト１５に対して回路基板５２を組み付ける。すなわち、シャフト１５の回転軸に垂直な方向に回路基板５２を移動させて、回路基板５２の凹部５２Ａにシャフト１５をはめ込む。   The manufacturing method of the rotating electrical machine according to the present embodiment is the same as that of the first embodiment and the second embodiment of the present invention. The method of manufacturing the rotating electrical machine according to the present embodiment includes a step of assembling the circuit board 52 to the shaft 15 connected to the rotor 16. In the present embodiment, when the circuit board 52 is assembled to the shaft 15, the shaft 15 is inserted into the recess 52 </ b> A of the circuit board 52 from the direction perpendicular to the rotation axis of the shaft 15. Then, the circuit board 52 is assembled. That is, the circuit board 52 is moved in a direction perpendicular to the rotation axis of the shaft 15, and the shaft 15 is fitted into the recess 52 </ b> A of the circuit board 52.

このとき、凹部５２Ａの直線Ｌ５１及び直線Ｌ５２は、本実施の形態にかかる回転電機の回転軸及び円弧Ｃに向かうように、ガイドの役割を果たす。シャフト１５が円弧Ｃに接触することで、シャフト１５に対して回路基板５２を組み付ける作業が終了する。以上で、シャフト１５が回路基板５２の凹部５２Ａを貫通した状態となる。   At this time, the straight line L51 and the straight line L52 of the recess 52A serve as a guide so as to be directed to the rotating shaft and the arc C of the rotating electrical machine according to the present embodiment. When the shaft 15 is in contact with the arc C, the work of assembling the circuit board 52 to the shaft 15 is completed. Thus, the shaft 15 is in a state of penetrating the recess 52A of the circuit board 52.

本実施の形態にかかる回転電機が備える回路基板５２の凹部５２Ａは、本実施の形態にかかる回転電機の回転軸から遠い方の端部の幅が、シャフト１５の直径よりも広い。そのため、シャフト１５に対して回路基板３２を組み付ける際において、シャフト１５の図６における上下方向の位置決めが本発明の実施の形態１よりも容易になる。したがって、本実施の形態では、回路基板３２の凹部３２Ａに対するシャフト１５の位置決めが容易であるので、本実施の形態にかかる回転電機は、容易に組み立てることができる。もちろん、本実施の形態でも、本発明の実施の形態１及び本発明の実施の形態２と同様に、回転電機の組み立て方法の自由度が従来よりも高くなっていることは言うまでもない。   In the recess 52A of the circuit board 52 provided in the rotating electrical machine according to the present embodiment, the width of the end portion far from the rotating shaft of the rotating electrical machine according to the present embodiment is wider than the diameter of the shaft 15. Therefore, when the circuit board 32 is assembled to the shaft 15, the vertical positioning of the shaft 15 in FIG. 6 becomes easier than in the first embodiment of the present invention. Therefore, in the present embodiment, since the positioning of the shaft 15 with respect to the recess 32A of the circuit board 32 is easy, the rotating electrical machine according to the present embodiment can be easily assembled. Of course, in the present embodiment as well, as in the first embodiment of the present invention and the second embodiment of the present invention, it is needless to say that the degree of freedom in the method of assembling the rotating electrical machine is higher than that of the conventional one.

また、本実施の形態では、第１のベアリング１４をシャフト１５に挿入してから、シャフト１５に回路基板３２を取り付けることができるので、シャフト１５に対して回路基板３２を組み付ける工程以外の工程を、従来と同様に行うことができ、本実施の形態にかかる回転電機１の組み立て時の作業性が従来よりも悪化することはない。   In the present embodiment, since the circuit board 32 can be attached to the shaft 15 after the first bearing 14 is inserted into the shaft 15, processes other than the process of assembling the circuit board 32 to the shaft 15 are performed. This can be performed in the same manner as in the prior art, and the workability at the time of assembling the rotating electrical machine 1 according to the present embodiment does not deteriorate as compared with the prior art.

本発明の実施の形態１にかかる回転電機１が備える回路基板１２の凹部１２Ａよりも、領域Ｓと領域Ｙの面積差分広い。しかしながら、本実施の形態にかかる回転電機が備える回路基板５２の面積も、領域Ｓの設計次第で、従来の回路基板より広く設計することは可能である。また、本実施の形態にかかる回転電機は、回路基板５２が有する凹部５２Ａの形状が従来と異なるが、部品数は変わらないので、本実施の形態にかかる回転電機全体のサイズが大きくなることはない。る   The area difference between the region S and the region Y is wider than the recess 12A of the circuit board 12 included in the rotating electrical machine 1 according to the first embodiment of the present invention. However, the area of the circuit board 52 provided in the rotating electrical machine according to the present embodiment can also be designed wider than the conventional circuit board depending on the design of the region S. Further, in the rotating electrical machine according to the present embodiment, the shape of the recess 52A of the circuit board 52 is different from the conventional one, but the number of parts does not change, so that the size of the entire rotating electrical machine according to the present embodiment is increased. Absent. Ru

なお、本発明は、発明の範囲内において、各実施の形態を自由に組み合わせること、各実施の形態を適宜、変形、省略することが可能である。各実施の形態において例示された各構成要素の寸法、材質、形状、それらの相対配置等は、本発明が適用される装置の構成や各種条件により適宜変更されるものであり、本発明はそれらの例示に限定されるものではない。また、各図における各構成要素の寸法は、実際の寸法と異なる場合がある。   Note that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted. The dimensions, materials, shapes, relative arrangements, and the like of the constituent elements exemplified in the embodiments are appropriately changed depending on the configuration of the apparatus to which the present invention is applied and various conditions. However, the present invention is not limited to these examples. Moreover, the dimension of each component in each figure may differ from an actual dimension.

１ 回転電機、１０ 第１のハウジング、１１ ブラケット、１２，３２，５２ 回路基板、１２Ａ，３２Ａ，５２Ａ 凹部、１２Ｂ 固定用切欠き、１２Ｃ，１３Ｃ ねじ穴、１２Ｄ，１３Ｄ 貫通孔、１３ 基板ケース、１３Ａ 孔、１３Ｂ 突起、１４ 第１のベアリング、１５ シャフト、１６ ローター、１８ 端子、１９ ステーター、２０ 鉄心、２１ コイル、２２ 絶縁体、２３ 第２のハウジング、２４ フレーム、４０ 換気扇、４１ 送風機、４２ グリル、４３ 天井。   DESCRIPTION OF SYMBOLS 1 Rotating electrical machine, 10 1st housing, 11 Bracket, 12, 32, 52 Circuit board, 12A, 32A, 52A Recessed part, 12B Notch for fixation, 12C, 13C Screw hole, 12D, 13D Through hole, 13 Substrate case, 13A hole, 13B protrusion, 14 first bearing, 15 shaft, 16 rotor, 18 terminal, 19 stator, 20 iron core, 21 coil, 22 insulator, 23 second housing, 24 frame, 40 ventilation fan, 41 blower, 42 Grill, 43 ceiling.

Claims (7)

筒状のステーターと、
前記ステーターの内側に配置され、シャフトを軸として回転するローターと、
外殻の一部を形成し、前記ローターの回転軸に垂直な平面において、前記回転軸から外側に向かう方向に垂直な方向の幅が前記シャフトの径以上であり、前記シャフトが貫通する凹部を有する回路基板と、
を備えた回転電機。 A cylindrical stator,
A rotor disposed inside the stator and rotating about a shaft;
Forming a part of the outer shell, and in a plane perpendicular to the rotation axis of the rotor, a width in a direction perpendicular to the direction from the rotation axis to the outside is equal to or larger than the diameter of the shaft, and a recess through which the shaft passes is formed. A circuit board having
Rotating electric machine with 前記回路基板の外郭は、前記凹部において、円弧と、前記円弧の両端のうち一端に一端が接続した第１の直線と、前記円弧の両端のうち他端に一端が接続した第２の直線とを有し、
前記第１の直線と前記第２の直線との間の距離は、一定であること、
を特徴とする請求項１に記載の回転電機。 The outline of the circuit board includes an arc in the recess, a first straight line having one end connected to one end of both ends of the arc, and a second straight line having one end connected to the other end of both ends of the arc. Have
The distance between the first straight line and the second straight line is constant;
The rotating electrical machine according to claim 1. 前記回路基板の外郭は、前記凹部において、円弧と、前記円弧の両端のうち一端に一端が接続した第１の直線と、前記円弧の両端のうち他端に一端が接続した第２の直線と、前記第１の直線の他端と接続した第３の直線と、前記第２の直線の他端に接続した第４の直線と、を有し、
前記第３の直線と前記第４の直線との間の距離は、前記第１の直線と前記第２の直線との間の距離以上であること、
を特徴とする請求項１に記載の回転電機。 The outline of the circuit board includes an arc in the recess, a first straight line having one end connected to one end of both ends of the arc, and a second straight line having one end connected to the other end of both ends of the arc. A third straight line connected to the other end of the first straight line, and a fourth straight line connected to the other end of the second straight line,
The distance between the third straight line and the fourth straight line is not less than the distance between the first straight line and the second straight line;
The rotating electrical machine according to claim 1. 前記第１の直線と前記第２の直線との間の距離は、前記シャフトの径と同じであること、
を特徴とする請求項２又は請求項３に記載の回転電機。 The distance between the first straight line and the second straight line is the same as the diameter of the shaft;
The rotating electrical machine according to claim 2 or 3, wherein: 前記回路基板の外郭は、前記凹部において、円弧と、前記円弧の両端のうち一端に一端が接続した第５の直線と、前記円弧の両端のうち他端に一端が接続した第６の直線とを有し、
前記第５の直線と前記第６の直線との間の距離は、前記回転軸から外側に向かうに従って広くなること、
を特徴とする請求項１に記載の回転電機。 The outline of the circuit board includes, in the recess, an arc, a fifth straight line having one end connected to one end of the arc, and a sixth straight line having one end connected to the other end of the arc. Have
A distance between the fifth straight line and the sixth straight line becomes wider toward the outside from the rotation axis;
The rotating electrical machine according to claim 1. シャフトの回転軸に対して垂直な方向から、回路基板の開口に前記シャフトが挿入されるように、前記シャフトに対して前記回路基板を組み付ける工程を備えた回転電機の製造方法。   A method of manufacturing a rotating electrical machine comprising a step of assembling the circuit board with respect to the shaft so that the shaft is inserted into an opening of the circuit board from a direction perpendicular to the rotation axis of the shaft. 筒状のステーターと、
前記ステーターの内側に配置され、シャフトを軸として回転するローターと、
外殻の一部を形成し、前記ローターの回転軸に垂直な平面において、前記回転軸から外側に向かう方向に垂直な方向の幅が前記シャフトの径以上であり、前記シャフトが貫通する凹部を有する回路基板と、
を有する回転電機と、
前記回転電機の一端に接続され、前記回転電機によって駆動される送風機と、
を備えた換気扇。 A cylindrical stator,
A rotor disposed inside the stator and rotating about a shaft;
Forming a part of the outer shell, and in a plane perpendicular to the rotation axis of the rotor, a width in a direction perpendicular to the direction from the rotation axis to the outside is equal to or larger than the diameter of the shaft, and a recess through which the shaft passes is formed. A circuit board having
A rotating electrical machine having
A blower connected to one end of the rotating electrical machine and driven by the rotating electrical machine;
Ventilation fan with
JP2017002976A 2017-01-12 2017-01-12 Rotary electric machine, manufacturing method of rotary electric machine, and exhaust fan Pending JP2018113787A (en)

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CN109756087A (en) * 2018-12-26 2019-05-14 浙江省东阳市东磁诚基电子有限公司 The upper casing position rotating and mobile mechanism that multiple micro-machines for the more notches of casing assemble
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