JP2017229169A - Insulator, electric motor, and blower - Google Patents
Insulator, electric motor, and blower Download PDFInfo
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- JP2017229169A JP2017229169A JP2016124130A JP2016124130A JP2017229169A JP 2017229169 A JP2017229169 A JP 2017229169A JP 2016124130 A JP2016124130 A JP 2016124130A JP 2016124130 A JP2016124130 A JP 2016124130A JP 2017229169 A JP2017229169 A JP 2017229169A
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- insulator
- rib
- iron core
- tooth base
- peripheral side
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
Description
本発明は、インシュレータ、電動機、及び送風装置に関するものである。 The present invention relates to an insulator, an electric motor, and a blower.
従来、ステータコア、即ち鉄心と巻回される巻線との絶縁のため、ステータコア内径と巻線間の絶縁距離確保にはインシュレータにリブを形成とすることが知られている。 Conventionally, in order to insulate a stator core, that is, an iron core and a wound winding, it has been known that ribs are formed on an insulator to secure an insulation distance between the stator core inner diameter and the winding.
以下、その構成について図７を参照しながら説明する。 The configuration will be described below with reference to FIG.
図７に示すように、ステータコア内径側から突出する内周側リブ１１１を備えることで、ステータコアの一部である鍔部１１２の端部と、巻回される巻線１１３との絶縁距離１１５を確保し、さらに巻線１１３の巻回時における内周側壁１１４の倒れを防止している。 As shown in FIG. 7, by providing the inner peripheral side rib 111 protruding from the stator core inner diameter side, an insulation distance 115 between the end portion of the flange portion 112 which is a part of the stator core and the wound winding 113 is provided. In addition, the inner peripheral side wall 114 is prevented from falling when the winding 113 is wound.
このような従来のインシュレータでは、鉄心外周が連続的に樹脂で覆われているため、鉄心の内周と巻線のみの絶縁距離を考慮すれば良かった。しかしながら鉄心のサイズが大きくなると、嵌め込みの作業性や強度を考慮した場合、インシュレータを一体として樹脂成形することが困難となる場合がある。また、分割鉄心を採用した場合には、外周樹脂が非連続となり空隙が発生するため、絶縁距離の制約を満足できず、一般に追加部材などにより絶縁距離の延長を図っているが、部品管理工数増加や部品点数増加によるコスト増加が課題であった。 In such a conventional insulator, since the outer periphery of the iron core is continuously covered with resin, it is only necessary to consider the insulation distance between the inner periphery of the iron core and only the winding. However, when the size of the iron core is increased, it may be difficult to resin-mold the insulator as a unit when considering the workability and strength of fitting. In addition, when a split iron core is used, the outer peripheral resin becomes discontinuous and voids are generated, so the insulation distance constraint cannot be satisfied. Generally, the insulation distance is extended by additional members, but the number of parts management man-hours The increase in cost due to the increase and the number of parts was an issue.
そして、この目的を達成するために、本発明に係るインシュレータは、鍔部の周方向両端から外周側に膨出する内側リブと、継鉄部の周方向両端から内周側に膨出する外側リブとを備え、これにより所期の目的を達成するものである。 In order to achieve this object, the insulator according to the present invention includes an inner rib that bulges from the circumferential ends of the flange portion toward the outer periphery, and an outer portion that bulges from the circumferential ends of the yoke portion toward the inner periphery. Ribs, thereby achieving the intended purpose.
本発明によれば、単一材料により部品点数を低減でき、樹脂成形性の向上が図れるため低コストで、高品質な電動機を提供することができる。 According to the present invention, the number of parts can be reduced by a single material and the resin moldability can be improved, so that a high-quality electric motor can be provided at low cost.
以下、本発明の実施の形態について図面を参照しながら説明する。なお、以下の実施の形態は、本発明を具体化した一例であって、本発明の技術的範囲を限定するものではない。また、全図面を通して、同一の部位については同一の符号を付して二度目以降の説明を省略している。さらに、各図面において、本発明に直接には関係しない各部の詳細については説明を省略している。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments are examples embodying the present invention, and do not limit the technical scope of the present invention. In addition, throughout the drawings, the same portions are denoted by the same reference numerals, and the second and subsequent descriptions are omitted. Furthermore, in each drawing, the description of the details of each part not directly related to the present invention is omitted.
（実施の形態１）
本発明の第１の実施の形態について、図面を参照しながら説明する。
(Embodiment 1)
A first embodiment of the present invention will be described with reference to the drawings.
まず、図１および図２を用いて本実施の形態に係る電動機１５について説明する。なお図１は、本実施の形態に係る電動機１５の天面側から見た平面図である。 First, the electric motor 15 according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a plan view seen from the top surface side of the electric motor 15 according to the present embodiment.
電動機１５は、回転軸１７を軸中心として回転するロータと、ロータの外周側に設けられたステータ１４とを備えている。なお、図１は、電動機１５の概略構造を示すものであり、電動機１５の外郭やロータ等は便宜上省略している。 The electric motor 15 includes a rotor that rotates around a rotation shaft 17 and a stator 14 that is provided on the outer peripheral side of the rotor. FIG. 1 shows a schematic structure of the electric motor 15, and an outer shell and a rotor of the electric motor 15 are omitted for convenience.
ステータ１４は、ステータコアすなわち鉄心１６と、インシュレータ１と、巻線１３とを備える。 The stator 14 includes a stator core, that is, an iron core 16, an insulator 1, and a winding 13.
鉄心１６は、円筒形状を有し、円筒形状における中心軸である回転軸１７に垂直な断面を規定した際に、断面視にして中空円形、すなわちドーナツ形状を有する。鉄心１６は、複数のＴ字形状部（後述のＴ字形状部１８）を周方向に連結して構成されるが、詳細は後述する。 The iron core 16 has a cylindrical shape, and has a hollow circular shape, that is, a donut shape in a cross-sectional view when a cross section perpendicular to the rotation shaft 17 that is the central axis in the cylindrical shape is defined. The iron core 16 is configured by connecting a plurality of T-shaped portions (T-shaped portions 18 described later) in the circumferential direction, which will be described in detail later.
インシュレータ１は、円筒形状を有する鉄心１６に対して、回転軸１７の軸方向における上下から鉄心１６に被せて当該鉄心１６を覆う構成を有する。つまりインシュレータ１は、インシュレータ部材Ａとインシュレータ部材Ｂとから構成される。インシュレータ１は、内側リブ２と外側リブ３を備えているが詳細は後述する。 The insulator 1 has a configuration in which an iron core 16 having a cylindrical shape is covered with the iron core 16 from above and below in the axial direction of the rotary shaft 17. That is, the insulator 1 includes an insulator member A and an insulator member B. The insulator 1 includes an inner rib 2 and an outer rib 3, which will be described in detail later.
巻線１３は、銅やアルミニウムの合金を主な素材とする導電線であり、インシュレータ１を介して複数のＴ字形状部１８に対して巻装され、すなわちインシュレータ１に巻回される。巻線１３は、図示しない交流電源、或いはインバータ回路等を介して直流電源に接続されて通電されることで、回転軸１７を中心にロータを回動させる。 The winding 13 is a conductive wire whose main material is an alloy of copper or aluminum, and is wound around the plurality of T-shaped portions 18 via the insulator 1, that is, wound around the insulator 1. The winding 13 is connected to a DC power source via an AC power source or an inverter circuit (not shown) and energized to rotate the rotor about the rotating shaft 17.
続いて、図２を用いてステータ１４の詳細構造について説明する。なお図２は、ステータ１４の平面図である。図２については、ステータ１４を構成する巻線１３は便宜上省略している。 Next, the detailed structure of the stator 14 will be described with reference to FIG. FIG. 2 is a plan view of the stator 14. In FIG. 2, the winding 13 constituting the stator 14 is omitted for convenience.
図２においては、鉄心１６全周にわたって当該鉄心１６とほぼ同一形状のインシュレータ１が覆っており、インシュレータ１が鉄心１６と図示しない巻線１３との絶縁材として機能する。 In FIG. 2, an insulator 1 having substantially the same shape as the iron core 16 is covered over the entire circumference of the iron core 16, and the insulator 1 functions as an insulating material between the iron core 16 and a winding 13 (not shown).
鉄心１６は、図２に示すようにＴ字形状部１８を、回転軸１７を中心に周方向に複数個（図２においては８個）連結して構成される。但し、鉄心１６は、必ずしも個々に分解可能なＴ字形状部１８を複数個連結する必要は無く、複数のＴ字形状部１８を円形に連結した形状として一体に構成してもよい。これはインシュレータ１についても同様である。 As shown in FIG. 2, the iron core 16 is formed by connecting a plurality of T-shaped portions 18 in the circumferential direction around the rotating shaft 17 (eight in FIG. 2). However, the iron core 16 does not necessarily have to be connected to a plurality of T-shaped portions 18 that can be individually disassembled, and may be integrally formed as a shape in which a plurality of T-shaped portions 18 are connected in a circular shape. The same applies to the insulator 1.
Ｔ字形状部１８は、継鉄部１２と、歯基部１０と、鍔部１１とを備える。 The T-shaped portion 18 includes a yoke portion 12, a tooth base portion 10, and a flange portion 11.
継鉄部１２は、鉄心１６の外周に設けられ、鉄心１６の外周面を構成する。 The yoke portion 12 is provided on the outer periphery of the iron core 16 and constitutes the outer peripheral surface of the iron core 16.
歯基部１０は、継鉄部１２から内周側に向けて延設され、回転軸１７に垂直な断面における断面視にして矩形の部位として設けられる。 The tooth base portion 10 extends from the yoke portion 12 toward the inner peripheral side, and is provided as a rectangular portion in a cross-sectional view in a cross section perpendicular to the rotation shaft 17.
鍔部１１は、歯基部１０の内周側先端部から周方向両側に延設された部位として設けられる。鍔部１１は、歯基部１０の内周先端部から遠ざかるに従い、漸次径方向の厚みが薄く構成されている。鍔部１１は、隣接する鍔部１１とは接触していないが、鉄心１６の内周面を構成する。 The collar part 11 is provided as a part extended from the inner peripheral side tip part of the tooth base part 10 to both sides in the circumferential direction. The flange portion 11 is configured so that the thickness in the radial direction gradually decreases as the distance from the distal end portion of the inner periphery of the tooth base portion 10 increases. The flange portion 11 is not in contact with the adjacent flange portion 11 but constitutes the inner peripheral surface of the iron core 16.
鉄心１６は、言い換えると、外周を構成する円筒形の継鉄部１２と、内周を構成する円筒形の鍔部１１とを歯基部１０が連結して構成される。なお、１つの歯基部１０の周方向の幅は、１つの継鉄部１２における周方向の長さよりも短く、かつ１つの鍔部１１における周方向の長さよりも短い。 In other words, the iron core 16 is configured by connecting the cylindrical yoke portion 12 constituting the outer periphery and the cylindrical flange portion 11 constituting the inner periphery to the tooth base portion 10. The circumferential width of one tooth base portion 10 is shorter than the circumferential length of one yoke portion 12 and shorter than the circumferential length of one collar portion 11.
続いて、インシュレータ１を構成するインシュレータ部材Ａ及びインシュレータ部材Ｂについて図３、図４、図５を用いて詳しく説明する。なお図３はインシュレータ部材と鉄心１６の斜視図である。図４は、本実施の形態に係るインシュレータ部材Ａ１ａの背面図とＡ−Ａにおける断面図である。また、図５は、本実施の形態に係るインシュレータ部材Ｂ１ｂの背面図とＢ−Ｂにおける断面図である。 Subsequently, the insulator member A and the insulator member B constituting the insulator 1 will be described in detail with reference to FIGS. 3, 4, and 5. FIG. 3 is a perspective view of the insulator member and the iron core 16. FIG. 4 is a rear view of the insulator member A1a according to the present embodiment and a cross-sectional view taken along AA. FIG. 5 is a rear view of the insulator member B1b according to the present embodiment and a sectional view taken along line BB.
インシュレータ１は、鉄心１６を構成するＴ字形状部１８のＴ字形状を有する前面１９側から鉄心１６に向かって嵌入するインシュレータ部材Ａ１ａと、前面１９の背面である背面２０側から嵌入するインシュレータ部材Ｂ１ｂとから構成される。 The insulator 1 includes an insulator member A1a that is fitted toward the iron core 16 from the T-shaped front surface 19 side of the T-shaped portion 18 that constitutes the iron core 16, and an insulator member that is fitted from the back surface 20 side that is the back surface of the front surface 19. B1b.
インシュレータ部材Ａ１ａは、外周側で継鉄部１２の内周面に当接する外周壁２１ａと、内周側で鍔部１１の外周面に当接する内周壁２２ａと、外周壁２１ａと内周壁２２ａとを連結して歯基部１０を覆う連結部２３ａと、オーバーラップ部９ａとを備える。 The insulator member A1a includes an outer peripheral wall 21a that contacts the inner peripheral surface of the yoke portion 12 on the outer peripheral side, an inner peripheral wall 22a that contacts the outer peripheral surface of the flange portion 11 on the inner peripheral side, an outer peripheral wall 21a, and an inner peripheral wall 22a. Are connected to cover the tooth base 10, and an overlap portion 9a is provided.
外周壁２１ａは、矩形の板状で一辺２４ａから当該一辺に対向する他辺２５ａ方向に向けて切り欠き２６ａが設けられており、全体としてＵ字形状を有する。外周壁２１ａは、一辺２４ａと他辺２５ａとに隣接する２つの側辺２７ａには、当該側辺２７ａ全体（図３における上端から下端まで）にわたって外側リブ３ａが設けられている。 The outer peripheral wall 21a has a rectangular plate shape and is provided with a notch 26a from one side 24a toward the other side 25a facing the one side, and has a U-shape as a whole. In the outer peripheral wall 21a, outer ribs 3a are provided on two side edges 27a adjacent to one side 24a and the other side 25a over the entire side edge 27a (from the upper end to the lower end in FIG. 3).
内周壁２２ａは、矩形の板状で一辺２８ａから当該一辺に対向する他辺２９ａ方向に向けて切り欠き３０ａが設けられており、全体としてＵ字形状を有する。内周壁２２ａは、一辺２８ａと他辺２９ａとに隣接する２つの側辺３１ａには、当該側辺３１ａ全体にわたって内側リブ２ａが設けられている。 The inner peripheral wall 22a has a rectangular plate shape and is provided with a notch 30a from one side 28a toward the other side 29a facing the one side, and has a U-shape as a whole. The inner peripheral wall 22a is provided with inner ribs 2a on the two side sides 31a adjacent to the one side 28a and the other side 29a over the entire side side 31a.
連結部２３ａは、外周壁２１ａにおける切り欠き２６ａの縁部と内周壁２２ａにおける切り欠き３０ａの縁部とを、切り欠き方向を揃えてかつ一定の距離を空けて接続している。ここで一定の距離とは、継鉄部１２の内周面と鍔部１１の外周面との距離であり、歯基部１０の径方向の長さと一致する。つまり連結部２３ａは、径方向に一定の距離を備えたトンネル形状を成す。連結部２３ａのトンネル形状における内周を歯基部１０と接触させることにより、鉄心１６に嵌入させることができる。 The connecting portion 23a connects the edge portion of the notch 26a in the outer peripheral wall 21a and the edge portion of the notch 30a in the inner peripheral wall 22a with the notch direction aligned and with a certain distance. Here, the constant distance is a distance between the inner peripheral surface of the yoke portion 12 and the outer peripheral surface of the flange portion 11 and coincides with the radial length of the tooth base portion 10. That is, the connecting portion 23a has a tunnel shape having a certain distance in the radial direction. The inner periphery of the connecting portion 23 a in the tunnel shape can be fitted into the iron core 16 by making contact with the tooth base portion 10.
オーバーラップ部９ａは、外周壁２１ａにおける他辺２５ａの両端部から、連結部２３ａのトンネル形状における脚部（底部）を介して内周壁２２ａにおける他辺２９ａの両端部に至る２本の薄肉部であるが詳細は後述する。 The overlap portion 9a has two thin portions extending from both end portions of the other side 25a of the outer peripheral wall 21a to both end portions of the other side 29a of the inner peripheral wall 22a via the tunnel-shaped legs (bottom portions) of the connecting portion 23a. However, details will be described later.
インシュレータ部材Ｂ１ｂは、基本的にインシュレータ部材Ａ１ａと同一形状であるが、側辺が側辺２７ａ、側辺３１ａよりも短い。 The insulator member B1b has basically the same shape as the insulator member A1a, but the side is shorter than the side 27a and the side 31a.
インシュレータ部材Ｂ１ｂは、外周側で継鉄部１２の内周面に当接する外周壁２１ｂと、内周側で鍔部１１の外周面に当接する内周壁２２ｂと、外周壁２１ａと内周壁２２ｂとを連結して歯基部１０を覆う連結部２３ｂと、オーバーラップ部９ｂとを備える。 The insulator member B1b includes an outer peripheral wall 21b that contacts the inner peripheral surface of the yoke portion 12 on the outer peripheral side, an inner peripheral wall 22b that contacts the outer peripheral surface of the flange 11 on the inner peripheral side, an outer peripheral wall 21a, and an inner peripheral wall 22b. Are connected to each other so as to cover the tooth base 10 and an overlap portion 9b.
外周壁２１ｂは、矩形の板状で一辺２４ｂから当該一辺に対向する他辺２５ｂ方向に向けて切り欠き２６ｂが設けられており、全体としてＵ字形状を有する。なお、図３上ではＵ字形状を上下反転して示している。外周壁２１ｂは、一辺２４ｂと他辺２５ｂとに隣接する２つの側辺２７ｂには、当該側辺２７ｂ全体（図３における上端から下端まで）にわたって外側リブ３ｂが設けられている。 The outer peripheral wall 21b has a rectangular plate shape and is provided with a notch 26b from one side 24b toward the other side 25b facing the one side, and has a U-shape as a whole. In FIG. 3, the U shape is shown upside down. In the outer peripheral wall 21b, outer ribs 3b are provided on the two side edges 27b adjacent to the one side 24b and the other side 25b over the entire side edge 27b (from the upper end to the lower end in FIG. 3).
内周壁２２ｂは、矩形の板状で一辺２８ｂから当該一辺に対向する他辺２９ｂ方向に向けて切り欠き３０ｂが設けられており、全体としてＵ字形状を有する。内周壁２２ｂは、一辺２８ｂと他辺２９ｂとに隣接する２つの側辺３１ｂには、当該側辺３１ｂ全体にわたって内側リブ２ｂが設けられている。 The inner peripheral wall 22b has a rectangular plate shape and is provided with a notch 30b from one side 28b toward the other side 29b facing the one side, and has a U-shape as a whole. The inner peripheral wall 22b is provided with inner ribs 2b on the two side sides 31b adjacent to the one side 28b and the other side 29b over the entire side side 31b.
連結部２３ｂは、外周壁２１ｂにおける切り欠き２６ｂの縁部と内周壁２２ｂにおける切り欠き３０ｂの縁部とを、切り欠き方向を揃えてかつ一定の距離を空けて接続している。つまり連結部２３ｂは、径方向に一定の距離を備えたトンネル形状を成す。連結部２３ｂのトンネル形状における内周を歯基部１０と接触させることにより、鉄心１６に嵌入させることができる。 The connecting part 23b connects the edge part of the notch 26b in the outer peripheral wall 21b and the edge part of the notch 30b in the inner peripheral wall 22b with the notch direction aligned and spaced apart by a certain distance. In other words, the connecting portion 23b has a tunnel shape having a certain distance in the radial direction. By bringing the inner periphery of the connecting portion 23 b in the tunnel shape into contact with the tooth base 10, it can be fitted into the iron core 16.
オーバーラップ部９ｂは、外周壁２１ｂにおける他辺２５ｂの両端部から、連結部２３ｂのトンネル形状における脚部を介して内周壁２２ｂにおける他辺２９ｂの両端部に至る２本の薄肉部であるが詳細は後述する。 The overlap portion 9b is two thin-walled portions extending from both end portions of the other side 25b of the outer peripheral wall 21b to both end portions of the other side 29b of the inner peripheral wall 22b through the leg portions in the tunnel shape of the connecting portion 23b. Details will be described later.
インシュレータ部材Ａ１ａ及びインシュレータ部材Ｂ１ｂは、図４、図５に示すように、それぞれ樹脂肉厚部６を備えている。 Insulator member A1a and insulator member B1b are each provided with the resin thick part 6, as shown in FIG. 4, FIG.
樹脂肉厚部６は、０．６ｍｍ程度の肉厚を有し、鉄心１６と巻線１３の絶縁距離を確保するため、継鉄部１２の内径側面から、歯基部１０の側面を介して鍔部１１の外径側面まで連続して、鉄心１６に面する（接触する）部分に設けられている。言い換えると、鉄心１６と、外周壁２１ａ、内周壁２２ａ、連結部２３ａ、との接触面は、後述の薄肉部を除いて、樹脂肉厚部６で構成される。また、鉄心１６と、外周壁２１ｂ、内周壁２２ｂ、連結部２３ｂとの接触面は、同じく後述の薄肉部を除いて、樹脂肉厚部６で構成される。 The resin thick portion 6 has a thickness of about 0.6 mm, and in order to secure an insulation distance between the iron core 16 and the winding wire 13, the resin thick portion 6 is formed from the inner diameter side surface of the yoke portion 12 through the side surface of the tooth base portion 10. It is provided in the part which faces (contacts) the iron core 16 continuously to the outer diameter side surface of the part 11. In other words, the contact surfaces of the iron core 16, the outer peripheral wall 21a, the inner peripheral wall 22a, and the connecting portion 23a are configured by the resin thick portion 6 except for a thin portion described later. Moreover, the contact surface of the iron core 16 and the outer peripheral wall 21b, the inner peripheral wall 22b, and the connection part 23b is comprised with the resin thick part 6 except the thin part mentioned later.
オーバーラップ部９は、インシュレータ部材Ａ１ａとインシュレータ部材Ｂ１ｂが互いに接する部分において、それぞれ薄肉部７ａと薄肉部７ｂとにより係合する。 The overlap portion 9 is engaged by the thin portion 7a and the thin portion 7b, respectively, at the portion where the insulator member A1a and the insulator member B1b are in contact with each other.
すなわち、オーバーラップ部９ａを構成する薄肉部７ａは、例えば図４（ｂ）に示すように、切り欠き２６ａの入り口近傍に設けられた、インシュレータ部材Ａ１ａとインシュレータ部材Ｂ１ｂが互いに接する接面３２から他辺２５ａに向けて延設されている。薄肉部７ａは、オーバーラップ部９ａ全周にわたって軸方向に樹脂肉厚部６の半分程度の厚み０．３ｍｍを有している。 That is, the thin-walled portion 7a constituting the overlap portion 9a is, for example, as shown in FIG. 4B, from a contact surface 32 provided in the vicinity of the entrance of the notch 26a where the insulator member A1a and the insulator member B1b are in contact with each other. It extends toward the other side 25a. The thin part 7a has a thickness of 0.3 mm, which is about half of the resin thick part 6 in the axial direction over the entire circumference of the overlap part 9a.
また、オーバーラップ部９ｂを構成する薄肉部７ｂは、例えば図５（ｂ）に示すように、切り欠き２６ｂの入り口近傍に設けられた接面３２から他辺２５ｂに向けて延設されている。薄肉部７ｂは、オーバーラップ部９ｂ全周にわたって軸方向に樹脂肉厚部６の半分程度の厚み０．３ｍｍを有している。 Moreover, the thin part 7b which comprises the overlap part 9b is extended toward the other side 25b from the contact surface 32 provided in the entrance vicinity of the notch 26b, for example, as shown in FIG.5 (b). . The thin portion 7b has a thickness of 0.3 mm, which is about half that of the resin thick portion 6, in the axial direction over the entire circumference of the overlap portion 9b.
インシュレータ部材Ａ１ａとインシュレータ部材Ｂ１ｂを鉄心１６に嵌め込む際には、オーバーラップ部９ａとオーバーラップ部９ｂとを対向させて、切り欠き２６ａと切り欠き２６ｂとを歯基部１０に接触させながら挿入する。その後、互いに対向するインシュレータ部材Ａ１ａの薄肉部７ａとインシュレータ部材Ｂ１ｂの薄肉部７ｂとを、オーバーラップ部９の全周にわたって重ねることで、インシュレータ部材Ａ１ａとインシュレータ部材Ｂ１ｂが係合する。なお、オーバーラップ部９は、薄肉部７ａが巻線１３側に、薄肉部７ｂが鉄心１６側にそれぞれ寄せられており、薄肉部７ａと薄肉部７ｂとが重なることで、段差無く、かつ樹脂肉厚部６と略同一の厚みとなる。このオーバーラップ構造により、インシュレータ部材Ａ１ａとインシュレータ部材Ｂ１ｂとは重なりをもってＴ字形状部１８を空隙なく覆うことができる。 When the insulator member A1a and the insulator member B1b are fitted into the iron core 16, the overlap portion 9a and the overlap portion 9b are opposed to each other, and the notch 26a and the notch 26b are inserted while being in contact with the tooth base portion 10. . Then, the insulator member A1a and the insulator member B1b are engaged by overlapping the thin portion 7a of the insulator member A1a and the thin portion 7b of the insulator member B1b facing each other over the entire circumference of the overlap portion 9. The overlap portion 9 has a thin portion 7a on the winding 13 side and a thin portion 7b on the iron core 16 side, and the thin portion 7a and the thin portion 7b are overlapped with each other, so that there is no step. The thickness is substantially the same as the thick portion 6. With this overlap structure, the insulator member A1a and the insulator member B1b can overlap and cover the T-shaped portion 18 with no gap.
また、インシュレータ部材Ａ１ａとインシュレータ部材Ｂ１ｂは、鍔部１１の周方向両端から外周側に膨出する内側リブ２ａ、内側リブ２ｂと、継鉄部の周方向両端から内周側に膨出する外側リブ３ａ、外側リブ３ｂとをそれぞれ備えている。 Moreover, the insulator member A1a and the insulator member B1b are an inner rib 2a and an inner rib 2b that bulge from the circumferential ends of the flange portion 11 to the outer peripheral side, and an outer portion that bulges from the circumferential ends of the yoke portion to the inner peripheral side. A rib 3a and an outer rib 3b are provided.
内側リブ２ａと内側リブ２ｂとは、共に側辺３１ａ、側辺３１ｂ全体にわたって設けられているため、図３（ｂ）に示すインシュレータ１形成時には、Ｔ字形状部１８の前面１９から背面２０にわたって連続して形成される。 Since both the inner rib 2a and the inner rib 2b are provided over the entire side 31a and the entire side 31b, when the insulator 1 shown in FIG. 3B is formed, the inner rib 2a and the inner rib 2b extend from the front surface 19 to the rear surface 20 of the T-shaped portion 18. It is formed continuously.
外側リブ３ａと外側リブ３ｂは、共に側辺２７ａ、側辺２７ｂ全体にわたって設けられているため、図３（ｂ）に示すインシュレータ１形成時には、Ｔ字形状部１８の前面１９から背面２０にわたって連続して形成される。 Since both the outer rib 3a and the outer rib 3b are provided over the entire side 27a and side 27b, when the insulator 1 shown in FIG. 3B is formed, the outer rib 3a and the outer rib 3b are continuous from the front surface 19 to the rear surface 20 of the T-shaped portion 18. Formed.
内側リブ２や外側リブ３は、接触面、すなわち樹脂肉厚部６よりも厚く構成されている。例えば、内側リブ２及び外側リブ３においては、巻回される巻線１３を支える強度の観点から樹脂肉厚部６のよりも厚く、内側リブ２は１ｍｍ程度、外側リブ３は２．５ｍｍ程度の厚みを有する。 The inner rib 2 and the outer rib 3 are configured to be thicker than the contact surface, that is, the resin thick portion 6. For example, the inner rib 2 and the outer rib 3 are thicker than the resin thick portion 6 from the viewpoint of strength to support the wound winding wire 13, the inner rib 2 is about 1 mm, and the outer rib 3 is about 2.5 mm. Having a thickness of
内側リブ２ａ、外側リブ３ａは、図４（ａ）に示すように、内側リブ２ａの先端から外側リブ３ａの先端にわたって薄肉部が設けられている。そして内側リブ２ａ、外側リブ３ａに対応する薄肉部は、他の薄肉部よりも厚みが厚いため先端薄肉部３３として区別する。先端薄肉部３３もオーバーラップ部９同様、対応する先端薄肉部同士が係合し、段差無く、内側リブ２や外側リブ３を構成する。 As shown in FIG. 4A, the inner rib 2a and the outer rib 3a are provided with thin portions from the tip of the inner rib 2a to the tip of the outer rib 3a. And the thin part corresponding to the inner side rib 2a and the outer side rib 3a is distinguished as the front end thin part 33 since it is thicker than the other thin parts. Similarly to the overlap portion 9, the distal thin portion 33 also engages with the corresponding distal thin portion to form the inner rib 2 and the outer rib 3 without a step.
内側リブ２や外側リブ３は、先端薄肉部３３の係合により係合後においても空隙を生じることなく絶縁距離を確保できる。そして、一般的に薄肉部の末端部で多発する成形課題の引け反りの抑制が可能となる。これにより引け反り要因によるインシュレータ部材Ａ１ａ、インシュレータ部材Ｂ１ｂの係合時の段差防止に繋がるため、巻線１３巻回時の断線を防止することができる。 The inner rib 2 and the outer rib 3 can ensure an insulation distance without causing a gap even after the engagement due to the engagement of the tip thin portion 33. In addition, it is possible to suppress the warpage of the forming problem that is frequently generated at the end portion of the thin portion. This leads to prevention of a step when the insulator member A1a and the insulator member B1b are engaged due to the cause of the warp, so that it is possible to prevent disconnection when the winding 13 is wound.
内側リブ２は、図４（ａ）、図５（ａ）の矢印３６に示すように、鍔部１１の周方向端部から対向する継鉄部１２の周方向端部に向けて膨出している。なお、継鉄部１２が連続した一体形状を成す場合においては、継鉄部１２上であって、隣接する歯基部１０から等距離の位置を周方向端部と規定する。 As shown by arrows 36 in FIGS. 4A and 5A, the inner rib 2 bulges from the circumferential end of the flange portion 11 toward the circumferential end of the yoke portion 12 facing the inner rib 2. Yes. In addition, when the yoke part 12 comprises the continuous integral shape, it is on the yoke part 12, Comprising: The position of equidistant from the adjacent tooth base 10 is prescribed | regulated as a circumferential direction edge part.
外側リブ３は、図４（ａ）、図５（ａ）の矢印３７に示すように、継鉄部１２の周方向端部から対向する鍔部１１の周方向端部よりもさらに外側に向けて膨出している。なお外側とは、例えば隣接するＴ字形状部１８における歯基部１０の内周側先端３５が含まれる。なお都合上、図４（ａ）、図５（ａ）における内周側先端３５は、Ｔ字形状部１８自身のものを示している。 As shown by arrows 37 in FIGS. 4A and 5A, the outer rib 3 is directed further outward than the circumferential end of the flange 11 facing the circumferential end of the yoke portion 12. Bulge out. Note that the outside includes, for example, the inner peripheral side tip 35 of the tooth base 10 in the adjacent T-shaped portion 18. For convenience, the inner peripheral side tip 35 in FIGS. 4A and 5A shows that of the T-shaped portion 18 itself.
このように、内側リブ２と外側リブ３とを全てのインシュレータ１について設けることにより、図６のステータ１４の一部径方向断面図に示すように、巻線１３を巻回後においても追加部材なく非充電部である継鉄部１２側の鉄心１６および、鍔部１１側の鉄心１６と充電部である巻線１３に対し必要な絶縁距離を確保することができる。 Thus, by providing the inner rib 2 and the outer rib 3 for all the insulators 1, as shown in the partial radial cross-sectional view of the stator 14 in FIG. In addition, it is possible to secure a necessary insulation distance for the iron core 16 on the yoke part 12 side which is a non-charging part and the iron core 16 on the flange part 11 side and the winding 13 which is a charging part.
本発明にかかる電動機は、絶縁材であるインシュレータの内周側及び外周側にリブを設けることで絶縁距離を確保でき、インシュレータの組立性向上、およびインシュレータへの巻線巻回時の断線不良を大幅に低減することが可能とするものなので、家電機器等に使用される電動機として有用である。 The electric motor according to the present invention can secure an insulation distance by providing ribs on the inner peripheral side and outer peripheral side of an insulator, which is an insulating material, and improves the assembly of the insulator, and disconnection failure when winding the insulator around the insulator. Since it can be greatly reduced, it is useful as an electric motor used in home appliances and the like.
１ インシュレータ
１ａ インシュレータ部材Ａ
１ｂ インシュレータ部材Ｂ
２，２ａ，２ｂ 内側リブ
３，３ａ，３ｂ 外側リブ
６ 樹脂肉厚部
７ａ，７ｂ 薄肉部
９，９ａ，９ｂ オーバーラップ部
１０ 歯基部
１１ 鍔部
１２ 継鉄部
１３ 巻線
１４ ステータ
１５ 電動機
１６ 鉄心
１７ 回転軸
１８ Ｔ字形状部
１９ 前面
２０ 背面
２１ａ，２１ｂ 外周壁
２２ａ，２２ｂ 内周壁
２３ａ，２３ｂ 連結部
２４ａ，２４ｂ，２８ａ，２８ｂ 一辺
２５ａ，２５ｂ，２９ａ，２９ｂ 他辺
２６ａ，２６ｂ，３０ａ，３０ｂ 切り欠き
２７ａ，２７ｂ，３１ａ，３１ｂ 側辺
３２ 接面
３３ 先端薄肉部
1 Insulator 1a Insulator member A
1b Insulator member B
2, 2a, 2b Inner rib 3, 3a, 3b Outer rib 6 Resin thick part 7a, 7b Thin part 9, 9a, 9b Overlap part 10 Tooth base part 11 Gutter part 12 Relay part 13 Winding 14 Stator 15 Electric motor 16 Iron core 17 Rotating shaft 18 T-shaped part 19 Front face 20 Rear face 21a, 21b Outer peripheral wall 22a, 22b Inner peripheral wall 23a, 23b Connecting part 24a, 24b, 28a, 28b One side 25a, 25b, 29a, 29b Other side 26a, 26b, 30a 30b Notch 27a, 27b, 31a, 31b Side 32 Contact surface 33 Thin tip portion
Claims (9)
前記鍔部の周方向両端から外周側に膨出する内側リブと、
前記継鉄部の周方向両端から内周側に膨出する外側リブとを備えたインシュレータ。 A yoke portion provided on the outer peripheral side, a tooth base portion extending from the yoke portion toward the inner peripheral side, and a flange portion extending from the inner peripheral side tip portion of the tooth base portion to both sides in the circumferential direction. An insulator as an insulating material covering an iron core having a plurality of T-shaped portions provided,
An inner rib that bulges from the circumferential ends of the flange to the outer peripheral side;
The insulator provided with the outer side rib which bulges to the inner peripheral side from the circumferential direction both ends of the said yoke part.
前記鉄心の前記Ｔ字形状部を構成する前面側から当該前面に対向する背面側にわたって連続して設けられた請求項１記載のインシュレータ。 The inner rib and the outer rib are
The insulator according to claim 1, wherein the insulator is continuously provided from a front surface side constituting the T-shaped portion of the iron core to a back surface side facing the front surface.
前記Ｔ字形状部において前記鍔部の周方向端部から対向する継鉄部の周方向端部方向に向けて膨出し、
前記外側リブは、
前記Ｔ字形状部において前記継鉄部の周方向端部から対向する鍔部の周方向端部よりもさらに外側に向けて膨出する請求項１または２に記載のインシュレータ。 The inner rib is
In the T-shaped part, it bulges from the circumferential end of the flange toward the circumferential end of the yoke part facing the
The outer rib is
The insulator according to claim 1 or 2, wherein the T-shaped portion bulges further outward than the circumferential end of the flange facing from the circumferential end of the yoke portion.
前記鉄心の前記Ｔ字形状部を構成する前面側から嵌入するインシュレータ部材Ａと、
前記前面に対向する背面側から嵌入するインシュレータ部材Ｂと、
前記インシュレータ部材Ａのインシュレータ部材Ｂに対向する先端部に前記鉄心の歯基部と接触する接触面の厚みよりも薄い薄肉部と、
前記インシュレータ部材Ｂのインシュレータ部材Ａに対向する先端部に前記鉄心の歯基部と接触する接触面の厚みよりも薄い薄肉部とを備え、
前記薄肉部を互いに係合させて前記インシュレータ部材Ａと前記インシュレータＢとを結合するオーバーラップ構造を有する請求項１から４のいずれかに記載のインシュレータ。 The insulator is
An insulator member A fitted from the front side constituting the T-shaped portion of the iron core;
An insulator member B fitted from the back side facing the front surface;
A thin portion thinner than the thickness of the contact surface that contacts the tooth base of the iron core at the tip of the insulator member A facing the insulator member B;
A thin-walled portion thinner than the thickness of the contact surface in contact with the tooth base portion of the iron core at the tip portion of the insulator member B facing the insulator member A,
The insulator according to any one of claims 1 to 4, further comprising an overlap structure in which the thin-walled portions are engaged with each other to couple the insulator member A and the insulator B together.
前記鉄心の回転軸に垂直な断面における断面視にして前記内側リブの先端から前記外側リブの先端にわたって設けられる請求項５記載のインシュレータ。 The thin portion is
The insulator according to claim 5, wherein the insulator is provided from a tip of the inner rib to a tip of the outer rib as viewed in a cross section perpendicular to the rotation axis of the iron core.
前記鉄心の歯基部と接触する接触面の厚みよりも厚く、
前記内側リブ及び外側リブに対応する先端薄肉部は、
前記薄肉部の厚みより厚い請求項６記載のインシュレータ。 The inner and outer ribs are
Thicker than the thickness of the contact surface that contacts the tooth base of the iron core,
The thin tip portion corresponding to the inner rib and the outer rib is:
The insulator according to claim 6, wherein the insulator is thicker than the thin portion.
前記鉄心の全周にわたって設けられた請求項１から７のいずれかに記載のインシュレータと、
前記インシュレータに巻回される巻線とを備えた電動機。 A yoke portion provided on the outer peripheral side, a tooth base portion extending from the yoke portion toward the inner peripheral side, and a flange portion extending from the inner peripheral side tip portion of the tooth base portion to both sides in the circumferential direction. An iron core having a plurality of T-shaped portions,
The insulator according to any one of claims 1 to 7, provided over the entire circumference of the iron core,
An electric motor comprising a winding wound around the insulator.
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| JP2016124130A JP6719052B2 (en) | 2016-06-23 | 2016-06-23 | Insulator, electric motor, and blower |
| CN201780037824.8A CN109314426A (en) | 2016-06-23 | 2017-06-21 | Insulating part, motor and air supply device |
| PCT/JP2017/022776 WO2017221951A1 (en) | 2016-06-23 | 2017-06-21 | Insulator, electric motor, and blower device |
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| WO2019188494A1 (en) * | 2018-03-28 | 2019-10-03 | ダイキン工業株式会社 | Stator core and compressor |
| DE102022123145A1 (en) | 2021-09-17 | 2023-03-23 | Nidec Corporation | ENGINE AND ELECTRIC VEHICLE |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019188494A1 (en) * | 2018-03-28 | 2019-10-03 | ダイキン工業株式会社 | Stator core and compressor |
| JPWO2019188494A1 (en) * | 2018-03-28 | 2021-02-25 | ダイキン工業株式会社 | Stator core and compressor |
| JP7054028B2 (en) | 2018-03-28 | 2022-04-13 | ダイキン工業株式会社 | Stator core and compressor |
| US11770032B2 (en) | 2018-03-28 | 2023-09-26 | Daikin Industries, Ltd. | Stator core insulating member with non-contact portions |
| CN109951000A (en) * | 2019-04-01 | 2019-06-28 | 神通科技集团股份有限公司 | New-type electric machine skeleton |
| DE102022123145A1 (en) | 2021-09-17 | 2023-03-23 | Nidec Corporation | ENGINE AND ELECTRIC VEHICLE |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6719052B2 (en) | 2020-07-08 |
| WO2017221951A1 (en) | 2017-12-28 |
| CN109314426A (en) | 2019-02-05 |
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