JP5474493B2

JP5474493B2 - Magnet generator rotor

Info

Publication number: JP5474493B2
Application number: JP2009254223A
Authority: JP
Inventors: 則和竹内
Original assignee: DensoTrim Co Ltd
Current assignee: DensoTrim Co Ltd
Priority date: 2009-11-05
Filing date: 2009-11-05
Publication date: 2014-04-16
Anticipated expiration: 2029-11-05
Also published as: JP2011101495A

Description

本発明は、オートバイ、バギー、雪上車などのエンジンに装着され、バッテリの充電及び電気負荷への給電を行うフェライト磁石など磁石を使用した磁石発電機の回転子に関する。 The present invention relates to a rotor for a magnet generator that is mounted on an engine such as a motorcycle, buggy, or snow vehicle and uses a magnet such as a ferrite magnet that charges a battery and supplies power to an electric load.

従来、磁石発電機の回転子として、ロータの円筒部の内周面に複数分割されて円周状に配設される磁石と、隣り合う磁石間に形成される磁石間平行隙間部に圧入される小凸部を有する底部側スペーサと、磁石のロータ開口側に配される非磁性の開口先端側スペーサとを備える回転子が知られている（例えば特許文献１参照）。 Conventionally, as a rotor of a magnet generator, it is press-fitted into a parallel gap between magnets formed between a magnet that is divided into a plurality of inner circumferential surfaces of a cylindrical portion of a rotor and arranged circumferentially, and an adjacent magnet. There is known a rotor including a bottom side spacer having a small convex portion and a nonmagnetic opening tip side spacer arranged on the rotor opening side of the magnet (see, for example, Patent Document 1).

特開２００５−１３０５４８公報JP-A-2005-130548

しかし、上記従来技術によると、底部側スペーサの小凸部を磁石間平行隙間部に圧入する際、小凸部の削りカス又は変形部が底部側スペーサと磁石との間に入り込み、磁石が底部側スペーサから浮き上がるという問題がある。 However, according to the above prior art, when the small convex portion of the bottom side spacer is press-fitted into the parallel gap portion between the magnets, the scrap or deformed portion of the small convex portion enters between the bottom side spacer and the magnet, and the magnet is There is a problem of floating from the side spacer.

また、上記従来技術によると、底部側スペーサの小凸部が磁石間平行隙間部に圧入されるとき、磁石がロータの円筒部の内周面に押し付けられる反動で小凸部に内径側に押し出される力が作用し、この力が底部側スペーサの剛性を上回ると、底部側スペーサが変形して内径側にはみ出るという問題がある。この場合、底部側スペーサの内径側への縮径を伴い、固定子とのエアギャップが非所望に小さくなるという問題もある。 Further, according to the above prior art, when the small convex portion of the bottom spacer is press-fitted into the parallel gap portion between the magnets, the magnet is pushed against the inner peripheral surface of the cylindrical portion of the rotor and pushed out to the small convex portion on the inner diameter side. When the force to be applied acts and this force exceeds the rigidity of the bottom side spacer, there is a problem that the bottom side spacer is deformed and protrudes to the inner diameter side. In this case, there is also a problem that the air gap with the stator is undesirably reduced with a reduction in diameter toward the inner diameter side of the bottom side spacer.

また、上記従来技術によると、特許文献１の図１及び図３に示すように、開口先端側スペーサが厚肉でしかも円環状押さえ板とかしめ部によって、磁石軸方向端面からかしめ頂部までが長くなり、回転子の軸長が長いという問題がある。また、かしめ部の切削時間が長いという問題もある。更に、かしめ部がコアに接近しているため、固定子からかしめ部への磁気漏れが多くなり、性能が低下する問題もある。 Further, according to the above prior art, as shown in FIG. 1 and FIG. 3 of Patent Document 1, the opening tip side spacer is thick, and the length from the end surface in the magnet axial direction to the top of the caulking is long due to the annular pressing plate and the caulking portion. Therefore, there is a problem that the axial length of the rotor is long. There is also a problem that the cutting time of the caulking portion is long. Furthermore, since the caulking portion is close to the core, there is a problem that the magnetic leakage from the stator to the caulking portion increases and the performance is deteriorated.

本発明は、上記のような従来技術の問題点を解決し、底部側スペーサの小凸部を磁石間平行隙間部に圧入する際、磁石の底部側スペーサからの浮き上がりを防止することを第１の主目的的とする。また、本発明は、回転子の軸長の短縮化を図ることを第２の主目的とする。 The present invention solves the problems of the prior art as described above, and prevents the floating of the magnet from the bottom side spacer when the small convex portion of the bottom side spacer is press-fitted into the parallel gap portion between the magnets. The main purpose of The second main object of the present invention is to shorten the axial length of the rotor.

上記目的を達成するために、本発明の請求項１の磁石式発電機の回転子は、ロータの円筒部の内周面に複数分割されて円周状に配設される磁石と、隣り合う磁石間に形成される磁石間平行隙間部に圧入される小凸部を有する底部側スペーサとを備えた磁石発電機の回転子において、前記各磁石の円周方向両端面に、前記磁石間平行隙間部を生成する小凸部圧入面が形成され、該磁石の外径側円周方向両端面と該磁石の軸方向両端面とで囲まれた四辺形の四隅に、該小凸部圧入面まで達する面取部を設けて、該小凸部圧入時の前記小凸部の削りカス又は変形部を収容する逃がし空間が形成され、前記底部側スペーサは磁石受面を有する磁石受部を備え、前記磁石受部の内周において前記小凸部と対向する部位に、内周凹部が設けられたことを特徴とする。 In order to achieve the above object, the rotor of the magnet generator according to claim 1 of the present invention is adjacent to a magnet that is divided into a plurality of portions and arranged circumferentially on the inner peripheral surface of the cylindrical portion of the rotor. In a rotor of a magnet generator provided with a bottom side spacer having a small convex portion that is press-fitted into a parallel gap between magnets formed between magnets, the magnets are parallel to both circumferential ends of each magnet. small protrusions press-fitting surface to produce a gap portion is formed, the outer diameter side in the circumferential direction both end faces and four corners of the quadrilateral surrounded by the axial end surfaces of the magnet, the small protrusions press-fitting surface of the magnet provided chamfered portion reaching said at the small protrusions press-relief space for accommodating the shavings or deformation of the small protrusions are formed, the bottom side spacer comprises a magnet receiving portion having a magnet receiving surface , at a site opposed to the small protrusions on the inner circumference of said magnet receiving portion, that the inner circumferential recess provided especially To.

また、請求項２の磁石式発電機の回転子は、ロータの円筒部の内周面に複数分割されて円周状に配設される磁石と、隣り合う磁石間に形成される磁石間平行隙間部に圧入される小凸部を有する底部側スペーサとを備えた磁石発電機の回転子において、前記各磁石は、前記磁石間平行隙間部を形成する小凸部圧入面を有し、前記底部側スペーサは、前記小凸部の根元に、前記小凸部圧入時の前記小凸部の削りカス又は変形部を収容する逃がし空間を有し、前記底部側スペーサは磁石受面を有する磁石受部を備え、前記磁石受部の内周において前記小凸部と対向する部位に、内周凹部が設けられたことを特徴とする。 According to a second aspect of the present invention , the rotor of the magnet generator is parallel to the magnet formed between the magnets that are divided into a plurality of portions on the inner peripheral surface of the cylindrical portion of the rotor and arranged circumferentially. In the rotor of the magnet generator having a bottom side spacer having a small convex part that is press-fitted into the gap part, each of the magnets has a small convex part press-fitting surface that forms the parallel gap part between the magnets, magnet bottom side spacer, the base of the small protrusions, said having a relief space for accommodating the shavings or deformed portion of the small protrusions at small protrusions press-fitted, the bottom side spacer having a magnet receiving surface A receiving portion is provided, and an inner peripheral concave portion is provided at a portion facing the small convex portion on the inner periphery of the magnet receiving portion .

また、前記ロータの底板部に固定溝又は固定凸部を設けるとともに前記底部側スペーサに前記固定溝又は前記固定凸部と嵌合する固定凸部又は固定溝を設ける。 Further, a fixed groove or a fixed groove is provided in the bottom plate portion of the rotor, and a fixed convex portion or a fixed groove that fits the fixed groove or the fixed convex portion is provided in the bottom side spacer.

また、記底部側スペーサの前記磁石受面に、前記内周凹部に結合して接着剤逃がし溝を設ける。 In addition, an adhesive relief groove is provided on the magnet receiving surface of the bottom side spacer so as to be coupled to the inner peripheral recess.

本発明の請求項５の磁石式発電機の回転子は、ロータの円筒部の内周面に円周状に配設される磁石と、該磁石のロータ開口側に配される非磁性の開口先端側スペーサとを備えた磁石発電機の回転子において、前記開口先端側スペーサは、前記磁石の開口側端面に当接する円板部と、該円板部の外周側に延び、前記ロータの前記円筒部の前記内周面に接する外周円筒鍔部とを有し、前記ロータの前記円筒部の先端の内周寄りに、前記開口先端側スペーサの前記外周円筒鍔部の先端を部分的に内径側に変形させる分割凹かしめ部を形成したことを特徴とする。 The rotor of the magnet generator according to claim 5 of the present invention includes a magnet arranged circumferentially on the inner circumferential surface of the cylindrical portion of the rotor, and a non-magnetic opening arranged on the rotor opening side of the magnet. In the rotor of the magnet generator provided with the front end side spacer, the opening front end side spacer extends to the outer peripheral side of the disc portion that contacts the opening end surface of the magnet, and the rotor of the rotor An outer peripheral cylindrical flange portion that contacts the inner peripheral surface of the cylindrical portion, and the tip of the outer peripheral cylindrical flange portion of the opening distal end side spacer is partially inner diameter closer to the inner periphery of the distal end of the cylindrical portion of the rotor A split concave caulking portion that is deformed to the side is formed.

ここで、前記開口先端側スぺーサは、前記外周円筒鍔部と前記円板部との角部に複数のリブを有する。 Here, the opening distal end side spacer has a plurality of ribs at corners of the outer peripheral cylindrical collar portion and the disc portion.

また、前記開口先端側スペーサは、前記円板部の内周側に延び、ロータ開口側に立ち上がる堤防部と、該堤防部の先端を内側に折り曲げた磁石保護部とを有する。ここで、前記磁石保護部は、前記磁石の内周面からはみ出さないよう磁石側に折り曲げて構成される。 Further, the opening tip side spacer includes an embankment portion that extends to the inner peripheral side of the disk portion and rises toward the rotor opening side, and a magnet protection portion that is bent inwardly at the tip of the embankment portion. Here, the magnet protection part is configured to be bent toward the magnet side so as not to protrude from the inner peripheral surface of the magnet.

また、前記磁石保護部は、前記分割凹かしめ部と対向する部位にＲ状凹部を有する。 Moreover, the said magnet protection part has a R-shaped recessed part in the site | part facing the said division | segmentation concave crimping part.

また、前記開口先端側スペーサは、前記円板部の内周側に延び、ロータ開口側に立ち上がる堤防部と、該堤防部の先端を前記磁石の内周面側に折り曲げ、ステータの開口側ボビンの鍔部と対向する磁石内周保護部とを有し、前記磁石内周保護部の先端は前記ステータのコアまで達しない。 The opening front end side spacer extends to the inner peripheral side of the disk portion, rises to the rotor opening side, and the front end of the dike portion is bent to the inner peripheral surface side of the magnet to open the opening side bobbin of the stator. And a magnet inner periphery protection portion facing the flange portion, and the tip of the magnet inner periphery protection portion does not reach the core of the stator.

請求項１に記載の磁石発電機の回転子によると、磁石の面取部が、小凸部圧入時の小凸部の削りカス又は変形部を収容する逃がし空間を形成するようにしたため、小凸部の削りカス又は変形部が底部側スペーサと磁石との間に入り込まなくなり、磁石の底部側スペーサからの浮き上がりを防止することができる。 According to the rotor of the magnet generator according to claim 1, the chamfered portion of the magnet forms an escape space that accommodates the shaving or deformed portion of the small convex portion when the small convex portion is press-fitted. The shavings or deformed portion of the convex portion do not enter between the bottom side spacer and the magnet, and the lifting of the magnet from the bottom side spacer can be prevented.

また、請求項２に記載の磁石発電機の回転子によると、小凸部圧入時の小凸部の削りカス又は変形部を収容する逃がし空間を底部側スペーサの根元に設けたため、小凸部の削りカス又は変形部が底部側スペーサと磁石との間に入り込まなくなり、磁石の底部側スペーサからの浮き上がりを防止することができる。 Further, according to the rotor of the magnet generator according to claim 2, since the relief space for accommodating the shavings or the deformed portion of the small convex portion at the time of press fitting the small convex portion is provided at the base of the bottom side spacer, the small convex portion This prevents the scrap or deformed portion from entering between the bottom side spacer and the magnet, and prevents the magnet from lifting from the bottom side spacer.

また、請求項５の磁石式発電機の回転子によれば、ロータの円筒部の先端の内周寄りに、開口先端側スペーサの外周円筒鍔部の先端を部分的に内径側に変形させる分割凹かしめ部を形成したため、回転子の軸長の短縮化を図ることができる。 Further, by the rotor magnet generator according to claim 5 lever, the inner peripheral side of the tip of the cylindrical portion of the rotor, causing the tip of the outer peripheral cylindrical collar portion of the opening tip side spacer partially deformed radially inward Since the divided concave caulking portion is formed, the axial length of the rotor can be shortened.

本発明の第１実施形態に係る磁石発電機の断面図であって、図２図示I-I線による断面図である。It is sectional drawing of the magnet generator which concerns on 1st Embodiment of this invention, Comprising: It is sectional drawing by II line illustration shown in FIG. 同磁石発電機の回転子の平面図である。It is a top view of the rotor of the same magnet generator. 図２図示の回転子から開口先端側スペーサを除外した平面図である。FIG. 3 is a plan view in which an opening front end side spacer is excluded from the rotor illustrated in FIG. 2. 底部側スペーサの平面図である。It is a top view of a bottom part side spacer. 磁石の形状の説明図であり、（Ａ）は平面図、（Ｂ）は正面図である。It is explanatory drawing of the shape of a magnet, (A) is a top view, (B) is a front view. 磁石の部分平面図、Ａ矢視図及びＢ矢視図である。It is a partial top view of a magnet, A arrow view, and B arrow view. 磁石の円周方向端面の斜視図である。It is a perspective view of the circumferential direction end surface of a magnet. 図３図示VIII部の拡大図である。It is an enlarged view of the VIII part shown in FIG. 底部側スペーサを磁石間に圧入前の状態を示す斜視図である。It is a perspective view which shows the state before press-fitting a bottom part side spacer between magnets. 底部側スペーサの小凸部に磁石が接した状態を示す斜視図である。It is a perspective view which shows the state which the magnet contact | connected to the small convex part of the bottom part side spacer. 底部側スペーサの圧入により変形した小凸部が磁石Ｒ部空間に収まった状態を示す斜視図である。It is a perspective view which shows the state which the small convex part deform | transformed by the press injection of the bottom part side spacer was settled in the magnet R part space. 図８図示XII-XII線による断面図である。It is sectional drawing by the XII-XII line | wire shown in FIG. 本実施形態との比較のための図であり、従来の磁石間に底部側スペーサを圧入した状態を示す斜視図である。It is a figure for the comparison with this embodiment, and is a perspective view which shows the state which press-fit the bottom part side spacer between the conventional magnets. 図２図示XIV部の拡大図である。It is an enlarged view of the XIV part shown in FIG. 図１図示XV部の拡大図である。It is an enlarged view of the XV part shown in FIG. 図１図示XVI部の拡大図である。It is an enlarged view of the XVI part shown in FIG. 回転子の組付工程を説明するための図２図示XVII-XVII線による断面図に対応する断面図であり、（Ａ）は、組付治具のセット状態を示す断面図、（Ｂ）は、組付完了時の断面図である。It is sectional drawing corresponding to sectional drawing by the XVII-XVII line shown in FIG. 2 for demonstrating the assembly | attachment process of a rotor, (A) is sectional drawing which shows the set state of an assembly jig, (B) is It is sectional drawing at the time of assembly completion. 図１７図示XVIII部の拡大図である。It is an enlarged view of the XVIII part shown in FIG. 図１７図示XIX-XIX線による断面図である。It is sectional drawing by the XIX-XIX line shown in FIG. 本発明の第２実施形態に係る磁石発電機における底部側スペーサの斜視図である。It is a perspective view of the bottom side spacer in the magnet generator concerning a 2nd embodiment of the present invention. 同底部側スペーサの断面図であって、第１実施形態における図８図示XII-XII線による断面図に対応する断面図である。It is sectional drawing of the bottom part side spacer, Comprising: It is sectional drawing corresponding to sectional drawing by XII-XII line shown in FIG. 8 in 1st Embodiment. 本発明の第３実施形態に係る磁石発電機における底部側スペーサの斜視図である。It is a perspective view of the bottom part side spacer in the magnet generator concerning a 3rd embodiment of the present invention. 同底部側スペーサの断面図であって、第１実施形態における図８図示XII-XII線による断面図に対応する断面図である。It is sectional drawing of the bottom part side spacer, Comprising: It is sectional drawing corresponding to sectional drawing by XII-XII line shown in FIG. 8 in 1st Embodiment. 本発明の第４実施形態に係る磁石発電機における底部側スペーサ及びロータの円筒部の断面図であって、第１実施形態における図１８に対応する図である。It is sectional drawing of the cylindrical part of the bottom part side spacer and rotor in a magnet generator which concerns on 4th Embodiment of this invention, Comprising: It is a figure corresponding to FIG. 18 in 1st Embodiment. 本発明の第５実施形態に係る磁石発電機における回転子の平面図であって、第１実施形態における図３に対応する平面図である。It is a top view of the rotor in the magnet generator concerning a 5th embodiment of the present invention, and is a top view corresponding to Drawing 3 in a 1st embodiment. 本発明の第６実施形態に係る磁石発電機の断面図であって、第１実施形態における図１に対応する断面図である。It is sectional drawing of the magnet generator which concerns on 6th Embodiment of this invention, Comprising: It is sectional drawing corresponding to FIG. 1 in 1st Embodiment. 図２６図示XXVII部の拡大図である。It is an enlarged view of the XXVII part shown in FIG. 本発明の第７実施形態に係る磁石発電機における開口先端側スペーサを示す断面図であって、図１６に対応する断面図である。It is sectional drawing which shows the opening front end side spacer in the magnet generator which concerns on 7th Embodiment of this invention, Comprising: It is sectional drawing corresponding to FIG.

＜第１実施形態＞
図１〜図１９において、磁石発電機１００は、図１に示すように、回転子１と固定子２とを備える。 <First Embodiment>
1-19, the magnet generator 100 is provided with the rotor 1 and the stator 2 as shown in FIG.

回転子１は、ボス１１とロータ１２と磁石１３と底部側スペーサ１４と開口先端側スペーサ１５とリベット１６とを備える。 The rotor 1 includes a boss 11, a rotor 12, a magnet 13, a bottom side spacer 14, an opening tip side spacer 15, and a rivet 16.

ボス１１は、鉄材を鍛造で成形した後、切削で仕上げ加工されて構成される。ボス１１の内周面１１ａは、図示しないエンジンのクランクシャフトのテーパ部に嵌合されるテーパ部により構成される。ボス１１の外周面１１ｂには、回転子１をクランクシャフトから外すための抜きねじ１１ｃが形成されている。また、ボス１１の円環状フランジ部１１ｄには、ボス１１とロータ１２とを結合するリベット１６が挿通されるリベット孔１１ｅが形成されている。 The boss 11 is formed by forging an iron material and then finishing it by cutting. The inner peripheral surface 11a of the boss 11 is constituted by a tapered portion fitted to a tapered portion of a crankshaft of an engine (not shown). On the outer peripheral surface 11b of the boss 11, a screw 11c for removing the rotor 1 from the crankshaft is formed. A rivet hole 11 e through which a rivet 16 that connects the boss 11 and the rotor 12 is inserted is formed in the annular flange portion 11 d of the boss 11.

ロータ１２は、鉄板をプレス加工して椀状に形成され、円板状の底板部２１と、底板部２１の外周端から垂直に延びる円筒部２２とにより構成される。底板部２１には、ボス１１が嵌合するボス孔２１ａ、リベット１６が挿通されるリベット孔２１ｂ、及び、ロータ１２の内側の空気を外部に逃がすとともに回転子１の組付作業時に位置決め孔として利用される窓孔２１ｃが形成されている。また、底板部２１の内面には、図１、図１７及び図１８に示すように、底部側スペーサ１４の固定凸部４２が挿入される固定溝２１ｄが形成されている。固定溝２１ｄは、完全リング状に形成され、あるいは、円周上に複数に分割されて形成される。固定溝２１ｄは、図１８に示すように、外径側に傾斜溝部（外径側傾斜溝部）２１ｅ、内径側に傾斜溝部（内径側傾斜溝部）２１ｆを有する。さらに、円筒部２２の先端面２２ａの内径側には、周方向に沿って、図１４及び図１５に示すような分割凹かしめ部２２ｂが複数形成されている。 The rotor 12 is formed into a bowl shape by pressing an iron plate, and includes a disk-shaped bottom plate portion 21 and a cylindrical portion 22 that extends vertically from the outer peripheral end of the bottom plate portion 21. The bottom plate portion 21 has a boss hole 21a into which the boss 11 is fitted, a rivet hole 21b through which the rivet 16 is inserted, and escapes air inside the rotor 12 to the outside and serves as a positioning hole when the rotor 1 is assembled. A window hole 21c to be used is formed. Further, as shown in FIGS. 1, 17, and 18, a fixing groove 21 d into which the fixing convex portion 42 of the bottom side spacer 14 is inserted is formed on the inner surface of the bottom plate portion 21. The fixing groove 21d is formed in a complete ring shape or divided into a plurality of parts on the circumference. As shown in FIG. 18, the fixed groove 21d has an inclined groove portion (outer diameter side inclined groove portion) 21e on the outer diameter side and an inclined groove portion (inner diameter side inclined groove portion) 21f on the inner diameter side. Furthermore, a plurality of divided concave caulking portions 22b as shown in FIGS. 14 and 15 are formed along the circumferential direction on the inner diameter side of the distal end surface 22a of the cylindrical portion 22.

磁石１３は、円筒を周方向に均等に４分割した１／４円筒状のフェライト磁石３１を４個用いて構成される。各磁石３１の円周方向両端には、図５（Ｂ）に図示する内角が約９０度で、４個の磁石３１をロータ１２の円筒部２２の内径面２２ｃに均等に配置したとき、図１２に示すように隙間幅Ｇが５ｍｍ以下の平行な磁石間平行隙間部３２を構成する小凸部圧入面３１ｄが形成されている。 The magnet 13 is configured by using four 1/4 cylindrical ferrite magnets 31 in which a cylinder is equally divided into four in the circumferential direction. When the inner angles shown in FIG. 5B are about 90 degrees at both circumferential ends of each magnet 31 and four magnets 31 are evenly arranged on the inner diameter surface 22c of the cylindrical portion 22 of the rotor 12, FIG. As shown in FIG. 12, a small convex portion press-fitting surface 31d forming a parallel inter-magnet parallel gap portion 32 having a gap width G of 5 mm or less is formed.

図５（Ａ）の平面視に示す外径側円周方向両端面３１ｃと磁石軸方向両端面３１ｂとで囲まれた四辺形の四隅は略Ｒ面取りされ、小凸部圧入面３１ｄまで達する面取部３１ａを形成する。 The four corners of the quadrilateral surrounded by the outer circumferential side end surface 31c and the magnet axial direction both end surface 31b shown in a plan view of FIG. 5A are substantially R chamfered and reach the small convex portion press-fitting surface 31d. The take part 31a is formed.

図５（Ｂ）及び図６に示す外径側円周方向両端面３１ｃは、図示のように面を形成していても、図示しない角部を形成していてもよい。角部で形成した場合は、小凸部圧入面３１ｄは磁石の外径まで達する。面取形状は略Ｃ面取りにしてもよい。 The outer diameter side circumferential end surfaces 31c shown in FIGS. 5B and 6 may form surfaces as shown or may form corners (not shown). When formed by the corner, the small convex portion press-fitting surface 31d reaches the outer diameter of the magnet. The chamfered shape may be substantially C chamfered.

さらに、磁石３１の小凸部圧入面３１ｄと磁石３１の内周面３１ｅとの角部３１ｆは、欠けが生じないよう面取部により構成されている。 Further, the corner portion 31f between the small convex portion press-fitting surface 31d of the magnet 31 and the inner peripheral surface 31e of the magnet 31 is constituted by a chamfered portion so as not to be chipped.

底部側スペーサ１４は樹脂成形されたものであり、図４に示すように、リング状の磁石受部４１、磁石受部４１の磁石受面４１ａに４つ周方向に均等に立設された、磁石間平行隙間部３２より若干幅狭な板状凸部４１ｂ、各板状凸部４１ｂの両面に、磁石間平行隙間部３２より若干幅広になるよう形成された一対の小凸部４１ｃ、磁石間平行隙間部３２に小凸部４１ｃが圧入されたときに、磁石受部４１の内周面４１ｄの縮径を吸収する内周凹部４１ｅ、及び、内周凹部４１ｅに外接して形成された接着剤逃がし溝４１ｆを有する。磁石受面４１ａは、ロータ１２の底板部２１と平行な平面により構成される。ここで、図１２に示すように、板状凸部４１ｂの高さＨは、組付作業を容易にするため、磁石３１の軸方向の長さＭの半分に満たない長さに設定してあり、また、小凸部４１ｃの高さＰは、板状凸部４１ｂの高さＨより低く、磁石受部４１の厚さＳより小さく、小凸部圧入部における面取部３１ａの高さＲｈより高く設定してある。また、底部側スペーサ１４は、ロータ１２の固定溝２１ｄに挿入される固定凸部４２を有する。固定凸部４２は、完全リング状に形成され、あるいは、円周上に複数に分割されて形成される。固定凸部４２は、図１８に示すように、外径側にロータ１２の固定溝２１ｄの外径側傾斜溝部２１ｅに対向する傾斜凸部（外径側傾斜凸部）４２ａ、内径側にロータ１２の固定溝２１ｄの内径側傾斜溝部２１ｆに対向する傾斜凸部（内径側傾斜凸部）４２ｂを有する。 The bottom side spacer 14 is resin-molded, and as shown in FIG. 4, the ring-shaped magnet receiving portion 41 and the magnet receiving surface 41 a of the magnet receiving portion 41 are equally erected in the circumferential direction. A pair of small convex portions 41c formed so as to be slightly wider than the parallel gap portions 32 between magnets on both surfaces of the plate-like convex portions 41b, which are slightly narrower than the parallel gap portions 32 between magnets. When the small convex portion 41c is press-fitted into the inter-parallel gap portion 32, the inner peripheral concave portion 41e that absorbs the reduced diameter of the inner peripheral surface 41d of the magnet receiving portion 41 and the inner peripheral concave portion 41e are circumscribed. An adhesive escape groove 41f is provided. The magnet receiving surface 41 a is configured by a plane parallel to the bottom plate portion 21 of the rotor 12. Here, as shown in FIG. 12, the height H of the plate-like convex portion 41b is set to a length less than half of the axial length M of the magnet 31 in order to facilitate the assembling work. In addition, the height P of the small convex portion 41c is lower than the height H of the plate-like convex portion 41b and smaller than the thickness S of the magnet receiving portion 41, and the height of the chamfered portion 31a in the small convex portion press-fitting portion. It is set higher than Rh. The bottom side spacer 14 has a fixed convex portion 42 that is inserted into the fixed groove 21 d of the rotor 12. The fixed convex portion 42 is formed in a complete ring shape, or is divided into a plurality of parts on the circumference. As shown in FIG. 18, the fixed convex portion 42 has an inclined convex portion (outer diameter side inclined convex portion) 42a facing the outer diameter side inclined groove portion 21e of the fixed groove 21d of the rotor 12 on the outer diameter side, and a rotor on the inner diameter side. There are inclined convex portions (inner diameter side inclined convex portions) 42b facing the inner diameter side inclined groove portions 21f of the twelve fixed grooves 21d.

開口先端側スペーサ１５は、板厚０．３ｍｍ程度の非磁性ステンレス鋼板をプレス加工して形成される。開口先端側スペーサ１５は、磁石３１の開口側端面３１ｇに接する円環状板部５１、円環状板部５１の外周端を開口側に折り曲げて形成され、ロータ１２の円筒部２２の内周に挿入される外周円筒鍔部５２、円環状板部５１と外周円筒鍔部５２の角部に複数分割して形成されたリブ５４、円環状板部５１の内径側を開口側に立ち上げた堤防部５５、及び、堤防部５５の先端を内側に折り曲げて形成された磁石保護部５６を有する。円環状板部５１には、磁石間平行隙間部３２と同じ位置角度で同数位置決めピン通し孔５１ａが形成されるとともに、外周円筒鍔部５２寄りに接着剤通し孔５１ｂが複数形成されている。磁石保護部５６の内周には、固定子２のコア２ａの先端幅（図１には現れていない。）より狭い幅Ｗｒに設定したＲ状凹部５６ａが、分割凹かしめ部２２ｂと同じ角度位置に同数形成されている。磁石保護部５６の内径は、磁石３１の内径と略同じ値に設定される。 The opening tip side spacer 15 is formed by pressing a nonmagnetic stainless steel plate having a thickness of about 0.3 mm. The opening tip side spacer 15 is formed by bending the annular plate portion 51 in contact with the opening side end surface 31 g of the magnet 31 and the outer peripheral end of the annular plate portion 51 to the opening side, and is inserted into the inner periphery of the cylindrical portion 22 of the rotor 12. The outer peripheral cylindrical flange 52, the rib 54 formed by dividing into a plurality of corners of the annular plate 51 and the outer peripheral cylindrical flange 52, and the levee portion where the inner diameter side of the annular plate 51 is raised to the opening side 55 and a magnet protection part 56 formed by bending the tip of the dike part 55 inward. In the annular plate portion 51, the same number of positioning pin through holes 51a are formed at the same position angle as the inter-magnet parallel gap portion 32, and a plurality of adhesive through holes 51b are formed near the outer peripheral cylindrical collar portion 52. On the inner periphery of the magnet protection part 56, an R-shaped recess 56a set to a width Wr narrower than the tip width of the core 2a of the stator 2 (not shown in FIG. 1) has the same angle as the split caulking part 22b. The same number is formed at the position. The inner diameter of the magnet protection part 56 is set to be approximately the same value as the inner diameter of the magnet 31.

固定子２は、鉄板をプレス加工により打ち抜いたコアシート２ｂを積層し、リベット２ｃをかしめて一体に構成される。コアシート２ｂの巻枠部の両側から樹脂成形されたボビン２ｄを挿入して絶縁部を形成し、ボビン２ｄの上から巻線用銅線を巻き付けて発電コイル２ｅを形成する。発電コイル２ｅには図示しないリード線が結線され、発電出力が外部に取り出される。コアシート２ｂには、固定子２をエンジンにねじ締め固定するための締付孔２ｆが形成されている。 The stator 2 is integrally formed by laminating core sheets 2b obtained by punching an iron plate by pressing and caulking rivets 2c. A resin-molded bobbin 2d is inserted from both sides of the core frame 2b to form an insulating portion, and a winding copper wire is wound on the bobbin 2d to form a power generating coil 2e. A lead wire (not shown) is connected to the power generation coil 2e, and the power generation output is taken out to the outside. The core sheet 2b is formed with a fastening hole 2f for screwing and fixing the stator 2 to the engine.

次に、回転子１の組付作業を図１７に基づいて説明する。 Next, the assembly work of the rotor 1 will be described with reference to FIG.

回転子１の組付作業には、圧入治具３を用いる。圧入治具３は、各磁石３１がロータ１２の円筒部２２の内周面２２ｃに密着したときの全体としての磁石１３の内径よりも若干小さい外径を有する位置決め円筒部６１、位置決め円筒部６１の根元に設けられ、開口先端側スペーサ１５の磁石保護部５６が嵌合して位置決めを行い、各磁石３１がロータ１２の円筒部２２の内周面２２ｃに密着したときの全体としての磁石１３の内径と略同じ外径を有する位置決め根元円筒部６２、及び、位置決め根元円筒部６２の外側に設けられ、開口先端側スペーサ１５の円環状板部５１を受けるスペーサ受部６３を備える。 A press-fitting jig 3 is used for the assembly work of the rotor 1. The press-fitting jig 3 includes a positioning cylindrical portion 61 and a positioning cylindrical portion 61 having an outer diameter slightly smaller than the inner diameter of the magnet 13 as a whole when the magnets 31 are in close contact with the inner peripheral surface 22c of the cylindrical portion 22 of the rotor 12. The magnet 13 as a whole when the magnet protection part 56 of the opening end side spacer 15 is fitted and positioned, and each magnet 31 is in close contact with the inner peripheral surface 22c of the cylindrical part 22 of the rotor 12. And a spacer receiving portion 63 that is provided outside the positioning root cylindrical portion 62 and receives the annular plate portion 51 of the opening distal end side spacer 15.

スペーサ受部６３には、磁石１３の磁石間平行隙間部３２に対応する位置に、円形状のピン圧入凹部６３ａが形成されている。ピン圧入凹部６３ａには、位置決めピン６４が圧入される。位置決めピン６４は、ピン圧入凹部６３ａに圧入される断面円形状のピン圧入部６４ａ、ピン圧入凹部６３ａから突出し、開口先端側スペーサ１５の位置決めピン通し孔５１ａに嵌合する位置決め半丸部６４ｂ、及び、磁石１３の磁石間平行隙間部３２に挿入される位置決め平面部６４ｃを有し、磁石１３と開口先端側スペーサ１５を同時に位置決めする。 In the spacer receiving portion 63, a circular pin press-fit recess 63a is formed at a position corresponding to the inter-magnet parallel gap portion 32 of the magnet 13. A positioning pin 64 is press-fitted into the pin press-fit recess 63a. The positioning pin 64 has a circular cross-sectional pin press-fit portion 64a that is press-fitted into the pin press-fit recess 63a, a positioning half-round portion 64b that protrudes from the pin press-fit recess 63a and fits into the positioning pin through hole 51a of the opening tip side spacer 15. And it has the positioning plane part 64c inserted in the parallel gap part 32 between magnets of the magnet 13, and positions the magnet 13 and the opening front end side spacer 15 simultaneously.

位置決め円筒部６１の上面には、ロータ１２の窓孔２１ｃに対応する位置に、ピン圧入凹部６１ａが形成されている。ピン圧入凹部６１ａには、ロータ位置決めピン６５が圧入される。ロータ位置決めピン６５は、ロータ１２の窓孔２１ｃに挿入され、ロータ１２を位置決めする。 A pin press-fit recess 61 a is formed on the upper surface of the positioning cylindrical portion 61 at a position corresponding to the window hole 21 c of the rotor 12. The rotor positioning pin 65 is press-fitted into the pin press-fit recess 61a. The rotor positioning pin 65 is inserted into the window hole 21 c of the rotor 12 to position the rotor 12.

スペーサ受部６３の外側に、かしめパンチ４が配される。かしめパンチ４は、軸方向に移動可能とされ、上面にかしめ凸部４ａが形成されている。 The caulking punch 4 is disposed outside the spacer receiving portion 63. The caulking punch 4 is movable in the axial direction, and a caulking convex portion 4a is formed on the upper surface.

また、位置決め円筒部６１の上方には、上下方向へ移動可能な加圧部５が配されている。 In addition, a pressurizing unit 5 that is movable in the vertical direction is disposed above the positioning cylindrical unit 61.

回転子１の組付作業は次の順序で行われる。 The assembly work of the rotor 1 is performed in the following order.

1) 開口先端側スペーサ１５のセット工程
スペーサ受部６３の位置決めピン６４に開口先端側スペーサ１５の位置決めピン通し孔５１ａを通し、位置決め根元円筒部６２により芯出ししながらスペーサ受部６３の上に開口先端側スペーサ１５をセットする。 1) Setting process of the opening distal end side spacer 15 The positioning pin through hole 51a of the opening distal end side spacer 15 is passed through the positioning pin 64 of the spacer receiving portion 63, and the positioning root cylindrical portion 62 is centered on the spacer receiving portion 63. The opening tip side spacer 15 is set.

2) 磁石１３のセット工程
開口先端側スペーサ１５の上に、位置決めピン６４で磁石１３の磁石間平行隙間部３２を確保しながら、位置決め円筒部６１の外周に密着させて各磁石３１をセットする。 2) Magnet 13 setting step Each magnet 31 is set on the outer periphery of the positioning cylindrical portion 61 while securing the inter-magnet parallel gap portion 32 of the magnet 13 with the positioning pin 64 on the opening tip side spacer 15. .

3) 底部側スペーサ１４の凸部挿入工程
磁石１３の上から、底部側スペーサ１４の小凸部４１ｃが磁石３１のＲ部３１ａに当たって止まるまで、底部側スペーサ１４の板状凸部４１ｂを磁石間平行隙間部３２に挿入する（図９、１０参照）。この挿入作業により、図１７（Ａ）に示すように、位置決め円筒部６１が磁石３１の底部側端面３１ｈから寸法Ｗだけ飛び出た状態で底部側スペーサ１４の位置決めが行われる。寸法Ｗは、底部側スペーサ１４の磁石受部４１の厚さＳより若干小さく設定されており、図１７（Ｂ）に示すように加圧部５を下降したとき、位置決め円筒部６１にロータ１２の底板部２１が当たらないようにしている。また、底部側スペーサ１４の小凸部４１ｃの高さＰは、磁石受部４１の厚さＳより小さく設定されているため、底部側スペーサ１４の磁石受部４１の内周面４１ｄが位置決め円筒部６１に嵌合可能とされ、底部側スペーサ１４の芯出しが行われる。 3) Step of inserting the convex portion of the bottom side spacer 14 From the top of the magnet 13, the plate-like convex portion 41b of the bottom side spacer 14 is moved between the magnets until the small convex portion 41c of the bottom side spacer 14 hits the R portion 31a of the magnet 31 and stops. It inserts in the parallel gap part 32 (refer FIG. 9, 10). As shown in FIG. 17A, this insertion operation positions the bottom-side spacer 14 in a state where the positioning cylindrical portion 61 protrudes from the bottom-side end surface 31h of the magnet 31 by the dimension W. The dimension W is set to be slightly smaller than the thickness S of the magnet receiving portion 41 of the bottom side spacer 14. When the pressurizing portion 5 is lowered as shown in FIG. The bottom plate portion 21 is not touched. Further, since the height P of the small convex portion 41c of the bottom side spacer 14 is set to be smaller than the thickness S of the magnet receiving portion 41, the inner peripheral surface 41d of the magnet receiving portion 41 of the bottom side spacer 14 is positioned cylinder. The fitting to the portion 61 is possible, and the bottom side spacer 14 is centered.

4) ロータ１２の下降工程
ロータ１２の開口側を下にして、ロータ１２の窓孔２１ｃにロータ位置決めピン６５を挿入させながらロータ１２の底板部２１と底部側スペーサ１４が接触するまでロータ１２を下降させる。なお、位置決め円筒部６１の外径は組付後の磁石１３の内径よりも若干小さく設定してあるため、図１７（Ａ）に示すように、位置決め円筒部６１に密着された各磁石３１の外周面３１ｉとロータ１２の円筒部２２の内周面２２ｃとの間に若干隙間が発生する。また、底部側スペーサ１４の外径はロータ１２の円筒部２２の内径より若干小さく設定したあるため、ロータ１２の下降は円滑に行われる。このロータ１２の下降工程において、上記底部側スペーサ１４の凸部挿入工程において底部側スペーサ１４が偏芯しないで正しい姿勢で圧入治具３にセットされている場合には、底部側スペーサ１４の固定凸部４２は、ロータ１２の底板部２１の固定溝２１ｄに正確に挿入されるようになる。 4) Lowering process of the rotor 12 With the opening side of the rotor 12 facing down, the rotor positioning pin 65 is inserted into the window hole 21c of the rotor 12 and the rotor 12 is moved until the bottom plate portion 21 of the rotor 12 and the bottom side spacer 14 come into contact with each other. Lower. Since the outer diameter of the positioning cylindrical portion 61 is set slightly smaller than the inner diameter of the magnet 13 after assembling, as shown in FIG. A slight gap is generated between the outer peripheral surface 31 i and the inner peripheral surface 22 c of the cylindrical portion 22 of the rotor 12. Moreover, since the outer diameter of the bottom side spacer 14 is set slightly smaller than the inner diameter of the cylindrical portion 22 of the rotor 12, the rotor 12 is smoothly lowered. In the lowering process of the rotor 12, when the bottom side spacer 14 is set in the press-fitting jig 3 in a correct posture without being eccentric in the convex part insertion process of the bottom side spacer 14, the bottom side spacer 14 is fixed. The convex portion 42 is accurately inserted into the fixed groove 21 d of the bottom plate portion 21 of the rotor 12.

5) ロータ加圧工程
加圧部５によりロータ１２を下方へ加圧する。この加圧時、上記底部側スペーサ１４の凸部挿入工程において底部側スペーサ１４が図１８に示すようにδだけ偏芯して圧入治具３にセットされている場合、底部側スペーサ１４の固定凸部４２の内径側傾斜凸部４２ｂがロータ１２の固定溝２１ｄの内径側傾斜溝部２１ｆにより加圧され、固定凸部４２は図１８図示矢印ａの方向へ矯正移動され、固定凸部４２と固定溝２１ｄの中心が一致するように組み付けられる。一方、図１８に示した固定凸部４２及び固定溝２１ｄとは１８０度反対側においては、固定凸部４２が外径側にずれて偏芯しているため、加圧時、固定凸部４２の外径側傾斜凸部４２ａが固定溝２１ｄの外径側傾斜溝部２１ｅにより加圧され、固定凸部４２は図１２図示矢印ａとは反対の方向へ矯正移動され、固定凸部４２と固定溝２１ｄの中心が一致するように組み付けられる。 5) Rotor pressurizing step The pressurizing unit 5 pressurizes the rotor 12 downward. At the time of this pressurization, when the bottom side spacer 14 is eccentrically set by δ and set in the press-fitting jig 3 as shown in FIG. The inner diameter side inclined convex part 42b of the convex part 42 is pressurized by the inner diameter side inclined groove part 21f of the fixed groove 21d of the rotor 12, and the fixed convex part 42 is corrected and moved in the direction of the arrow a shown in FIG. The fixing grooves 21d are assembled so that the centers thereof coincide. On the other hand, on the opposite side of the fixed convex portion 42 and the fixed groove 21d shown in FIG. 18 at 180 degrees, the fixed convex portion 42 is deviated to the outer diameter side and is eccentric. The outer diameter side inclined convex portion 42a is pressurized by the outer diameter side inclined groove portion 21e of the fixed groove 21d, and the fixed convex portion 42 is corrected and moved in the direction opposite to the arrow a shown in FIG. It is assembled so that the centers of the grooves 21d coincide.

また、加圧時、底部側スペーサ１４の小凸部４１ｃは、磁石間平行隙間部３２に圧入代だけ削られながら又は変形しながら圧入されるようになり、各磁石３１は位置決め円筒部６１の外周から離れ、ロータ１２の円筒部２２の内周面２２ｃに４個等間隔に押し付けられて固定される。この時に発生する小凸部４１ｃの削りカス又は変形部は、図１１及び図１２に示す逃がし空間４１ｇに収容されるようになり、図１３に示す従来技術のように、削りカス又は変形部が磁石３１と底部側スペーサ１４の当たり面に入り込むことはない。ここで、磁石３１の外径側円周方向両端面３１ｃと磁石軸方向両端面３１ｂとで囲まれた四辺形の四隅に小凸部圧入面３１ｄまで達する略Ｒ面取部３１ａを設け、更に、内角θの小凸部圧入面３１ｄを設けたため、図５，６，７に示すように外径側の面取が大きく、内径側になるにつれて面取が小さくなり、小凸部４１ｃが圧入される位置まで達する面取により逃がし空間４１ｇが形成される。略Ｃ面取にしても同様な逃がし空間４１ｇは形成される。 Further, at the time of pressurization, the small convex portion 41 c of the bottom side spacer 14 is pressed into the inter-magnet parallel gap portion 32 while being cut or deformed by a press-fitting allowance, and each magnet 31 is inserted into the positioning cylindrical portion 61. It is separated from the outer periphery, and is pressed against the inner peripheral surface 22c of the cylindrical portion 22 of the rotor 12 at an equal interval to be fixed. The scrap or deformed portion of the small convex portion 41c generated at this time is accommodated in the escape space 41g shown in FIGS. 11 and 12, and the scrap or deformed portion is stored in the escape space 41g shown in FIG. It does not enter the contact surface between the magnet 31 and the bottom side spacer 14. Here, substantially R chamfered portions 31a reaching the small convex press-fitting surfaces 31d are provided at the four corners of the quadrangle surrounded by the outer circumferential side end surfaces 31c and the magnet axial direction both end surfaces 31b of the magnet 31, Since the small convex portion press-fitting surface 31d having the inner angle θ is provided, the chamfer on the outer diameter side is large as shown in FIGS. An escape space 41g is formed by chamfering to reach the position. A similar escape space 41g is formed even if the chamfering is substantially C.

ロータ加圧時、各磁石３１がロータ１２の円筒部２２に押し付けられると、その反力が底部側スペーサ１４の小凸部４１ｃを介して磁石受部４１に作用し、磁石受部４１を内径側に縮径、変形させて磁石受部４１が磁石１３の内径側から内側にはみ出ようとするが、小凸部４１cの内側の磁石受部４１の内周面４１ｄには内周凹部４１ｅを設けてあるため、小凸部４１cのある磁石受部４１の内周部位が部分的に縮径しても、磁石受部４１と固定子２との間のギャップを確保することができる。また、ロータ１２の固定溝２１ｄと底部側スペーサ１４の固定凸部４２が嵌合しているので、磁石受部４１が変形して磁石１３の内径側から内側にはみ出ることを防止することができる。 When each magnet 31 is pressed against the cylindrical portion 22 of the rotor 12 when the rotor is pressed, the reaction force acts on the magnet receiving portion 41 via the small convex portion 41c of the bottom side spacer 14 so that the magnet receiving portion 41 has an inner diameter. The magnet receiving portion 41 tends to protrude inward from the inner diameter side of the magnet 13 by being reduced in diameter and deformed, but an inner peripheral concave portion 41e is formed on the inner peripheral surface 41d of the magnet receiving portion 41 inside the small convex portion 41c. Therefore, even when the inner peripheral portion of the magnet receiving portion 41 having the small convex portion 41c is partially reduced in diameter, a gap between the magnet receiving portion 41 and the stator 2 can be secured. Further, since the fixing groove 21d of the rotor 12 and the fixing convex portion 42 of the bottom side spacer 14 are fitted, it is possible to prevent the magnet receiving portion 41 from being deformed and protruding from the inner diameter side of the magnet 13 to the inside. .

6) かしめ工程
圧入治具３のかしめパンチ４を上昇させ、かしめパンチ４のかしめ凸部４ａによりロータ１２の円筒部２２の先端面２２ａを加圧する。この加圧により、かしめ凸部４ａが先端面２２ａに食い込み、図１５に示すように、食い込まれた部分が内径側に押し出されて分割凹かしめ部２２ｂが形成される。分割凹かしめ部２２ｂは、開口先端側スペーサ１５の外周円筒鍔部５２を磁石３１側に押し付けて固定するとともに、図１４に示すように開口先端側スペーサ１５の外周円筒鍔部５２の先端側を部分的に内径側に変形させるため、外周円筒鍔部５２は分割凹かしめされる部分（分割凹かしめ部２２ｂ）と、されない部分とが交互に波打つようにロータ１２の円筒部２２の内周面２２ｃに嵌合されるようになり、開口先端側スペーサ１５の回転方向への回動を防止することができる。また、外周円筒鍔部５２の根元にリブ５４を設けてあるため、かしめにより外周円筒鍔部５２が内径側に逃げるのを阻止することができ、かしめ強度を向上させることができる。 6) Caulking step The caulking punch 4 of the press-fitting jig 3 is raised, and the front end surface 22 a of the cylindrical portion 22 of the rotor 12 is pressurized by the caulking convex portion 4 a of the caulking punch 4. By this pressurization, the caulking convex portion 4a bites into the distal end surface 22a, and as shown in FIG. 15, the bited portion is pushed out toward the inner diameter side to form the divided concave caulking portion 22b. The divided concave caulking portion 22b presses and fixes the outer peripheral cylindrical flange portion 52 of the opening distal end side spacer 15 to the magnet 31 side, and also fixes the outer peripheral cylindrical flange portion 52 of the opening distal end side spacer 15 as shown in FIG. In order to be partially deformed to the inner diameter side, the outer peripheral cylindrical flange portion 52 has an inner peripheral surface of the cylindrical portion 22 of the rotor 12 such that a portion that is divided and caulked (divided concave caulking portion 22b) and a portion that is not alternately wavy. 22c can be fitted, and rotation of the opening distal end side spacer 15 in the rotation direction can be prevented. In addition, since the rib 54 is provided at the base of the outer peripheral cylindrical flange portion 52, the outer peripheral cylindrical flange portion 52 can be prevented from escaping to the inner diameter side by caulking, and the caulking strength can be improved.

7) 接着工程
圧入治具からロータ１２を外し、ロータ１２の開口側を上にして接着剤を開口先端側スペーサ１５の接着剤通し孔５１ｂに滴下し、加熱する。滴下した接着剤は加熱により磁石３１と開口先端側スペーサ１５との当たり面に毛細管現象により浸透してゆく。接着剤が堤防部５５に達すると、広い空間になり毛細管現象がなくなるため、接着剤は浸透を止め、磁石３１と磁石保護部５６とで形成される空間に溜まり、磁石３１の内径側まで垂れてくることはない。一方、接着剤は接着剤通し孔５１ｂから磁石３１の外周面３１ｉとロータ１２の円筒部２２の内周面２２ｃとの間にも浸透し、磁石受面４１ａと磁石軸方向端面３１ｂ間を浸透して、接着剤逃がし溝４１ｆに達すると、その溝４１ｆに沿って円周方向に流れ、それ以上内側に浸透しなくなる。接着剤逃がし溝４１ｆを伝わった接着剤が内周凹部４１ｅに達すると、内周凹部４１ｅからロータ１２の底板部２１に流れ落ちるため、接着剤が磁石３１と底部側スペーサ１４との当たり面の隙間から磁石３１の内径側に垂れて、固定子２とのギャップが小さくなることを防止することができる。 7) Adhesion process The rotor 12 is removed from the press-fitting jig, and the adhesive is dropped into the adhesive through hole 51b of the opening tip side spacer 15 with the opening side of the rotor 12 facing upward, and heated. The dropped adhesive permeates into the contact surface between the magnet 31 and the opening tip side spacer 15 by heating due to capillary action. When the adhesive reaches the embankment 55, it becomes a wide space and the capillary phenomenon is eliminated. Therefore, the adhesive stops permeation and accumulates in the space formed by the magnet 31 and the magnet protection part 56 and hangs down to the inner diameter side of the magnet 31. Never come. On the other hand, the adhesive permeates between the outer peripheral surface 31i of the magnet 31 and the inner peripheral surface 22c of the cylindrical portion 22 of the rotor 12 through the adhesive through hole 51b, and permeates between the magnet receiving surface 41a and the magnet axial end surface 31b. When the adhesive escape groove 41f is reached, it flows in the circumferential direction along the groove 41f and does not penetrate further inside. When the adhesive transmitted through the adhesive escape groove 41f reaches the inner peripheral recess 41e, the adhesive flows down from the inner peripheral recess 41e to the bottom plate portion 21 of the rotor 12, so that the adhesive is separated from the contact surface between the magnet 31 and the bottom side spacer 14. It is possible to prevent the gap between the magnet 31 and the stator 2 from becoming smaller due to the inner diameter side of the magnet 31.

以上説明したように、第１実施形態に係る磁石発電機の回転子１は、ロータ１２の円筒部２２の内周面２２cに複数分割されて円周状に配設される磁石１３と、隣り合う磁石３１間に形成される磁石間平行隙間部３２に圧入される小凸部４１cを有する底部側スペーサ１４とを備え、各磁石３１の円周方向両端面に、磁石間平行隙間部３２を生成する小凸部圧入面３１ｄを形成し、磁石３１の外径側円周方向両端面３１ｃと磁石３１の軸方向両端面３１ｂとで囲まれた四辺形の四隅に、小凸部圧入面３１ｄまで達する面取部３１ａを設けて、小凸部圧入時の小凸部４１ｃの削りカス又は変形部を収容する逃がし空間を形成する。 As described above, the rotor 1 of the magnet generator according to the first embodiment is adjacent to the magnet 13 that is divided into a plurality of inner peripheral surfaces 22c of the cylindrical portion 22 of the rotor 12 and arranged circumferentially. And a bottom side spacer 14 having a small convex portion 41c that is press-fitted into the inter-magnet parallel gap portion 32 formed between the magnets 31 to be fitted, and the inter-magnet parallel gap portion 32 is provided on both circumferential ends of each magnet 31. The small convex portion press-fitting surface 31d to be generated is formed, and the small convex portion press-fitting surface 31d is formed at the four corners of the quadrilateral surrounded by the outer circumferential side end surface 31c of the magnet 31 and the both axial end surfaces 31b of the magnet 31. The chamfered portion 31a is provided so as to form a relief space for accommodating the scrap or deformed portion of the small convex portion 41c when the small convex portion is press-fitted.

第１実施形態の回転子１によると、磁石３１のＲ部３１aが、小凸部４１c圧入時の小凸部４１cの削りカス又は変形部を収容する逃がし空間４１gを形成するようにしたため、回転子１の組付作業のロータ加圧工程において、小凸部４１cの削りカス又は変形部が底部側スペーサ４１と磁石３１との間に入り込まなくなり、磁石３１の底部側スペーサ４１からの浮き上がりを防止することができる。 According to the rotor 1 of the first embodiment, the R portion 31a of the magnet 31 forms an escape space 41g that accommodates the scrap or deformed portion of the small convex portion 41c when the small convex portion 41c is press-fitted. In the rotor pressurization process of the assembly operation of the child 1, the scraped or deformed portion of the small convex portion 41c does not enter between the bottom side spacer 41 and the magnet 31, and the floating of the magnet 31 from the bottom side spacer 41 is prevented. can do.

また、底部側スペーサ１４は磁石受面４１aを有する磁石受部４１を備え、磁石受部４１の内周において小凸部４１cと対向する部位に、内周凹部４１eを設けたため、回転子１の組付作業のロータ加圧工程において、小凸部４１cのある磁石受部４１の内周部位が部分的に縮径しても、磁石受部４１と固定子２との間のギャップを確保することができる。 In addition, the bottom side spacer 14 includes a magnet receiving portion 41 having a magnet receiving surface 41a, and an inner peripheral concave portion 41e is provided in a portion facing the small convex portion 41c in the inner periphery of the magnet receiving portion 41. In the rotor pressurization process of the assembling work, even if the inner peripheral portion of the magnet receiving portion 41 having the small convex portion 41c is partially reduced in diameter, a gap between the magnet receiving portion 41 and the stator 2 is secured. be able to.

また、ロータ１２の底板部２１に固定溝２１dを設けるとともに底部側スペーサ１４に固定溝２１dと嵌合する固定凸部４２を設けたため、回転子１の組付作業のロータ加圧工程において、磁石受部４１が変形して磁石１３の内径側から内側にはみ出ることを防止することができる。 In addition, since the fixed groove 21d is provided in the bottom plate portion 21 of the rotor 12 and the fixed convex portion 42 that is fitted to the fixed groove 21d is provided in the bottom side spacer 14, a magnet is used in the rotor pressurization process of the assembly work of the rotor 1. It is possible to prevent the receiving portion 41 from being deformed and protruding from the inner diameter side of the magnet 13 to the inner side.

また、底部側スペーサ１４の磁石受面４１aに、内周凹部４１eに結合して接着剤逃がし溝４１fを設けたため、回転子１の組付作業の接着工程において、接着剤が磁石３１と開口先端側スペーサ１５との当たり面の隙間から磁石３１の内径側に垂れて、固定子２とのギャップが小さくなることを防止することができる。 In addition, since the adhesive receiving groove 41f is provided on the magnet receiving surface 41a of the bottom spacer 14 so as to be coupled to the inner peripheral recess 41e, the adhesive is attached to the magnet 31 and the tip of the opening in the bonding process of the assembly work of the rotor 1. It is possible to prevent the gap with the stator 2 from becoming smaller due to the gap between the contact surface with the side spacer 15 and the inner diameter side of the magnet 31.

また、第１実施形態の回転子１は、ロータ１２の円筒部２２の内周面２２ｃに円周状に配設される磁石１３（３１）と、磁石１３のロータ開口側に配される非磁性の開口先端側スペーサ１５とを備え、開口先端側スペーサ１５は、磁石３１の開口側端面３１gに当接する円板部５１と、円板部５１の外周側に延び、ロータ１２の円筒部２２の内周面２２ｃに接する外周円筒鍔部５２とを有し、ロータ１２の円筒部２２の先端の内周寄りに、開口先端側スペーサ１５の外周円筒鍔部５２の先端を部分的に内径側に変形させる分割凹かしめ部２２bを形成したため、回転子１の軸長の短縮化を図ることができる。 In addition, the rotor 1 of the first embodiment includes a magnet 13 (31) arranged circumferentially on the inner peripheral surface 22c of the cylindrical portion 22 of the rotor 12, and a non-circular arrangement on the rotor opening side of the magnet 13. The opening end side spacer 15 is provided with a magnetic opening front end side spacer 15, the opening end side spacer 15 is in contact with the opening side end face 31 g of the magnet 31, and extends to the outer peripheral side of the disc part 51. An outer peripheral cylindrical flange portion 52 in contact with the inner peripheral surface 22c of the rotor 12, and the tip of the outer peripheral cylindrical flange portion 52 of the opening distal end side spacer 15 is partially located on the inner diameter side near the inner periphery of the cylindrical portion 22 of the rotor 12. Since the divided concave caulking portion 22b to be deformed is formed, the axial length of the rotor 1 can be shortened.

また、開口先端側スぺーサ１５は、外周円筒鍔部５２と円板部５１との角部に複数のリブ５４を有するため、回転子１の組付作業のかしめ工程において、外周円筒鍔部５２が中心側に倒れ過ぎるのを防止でき、かしめ固定力が向上する。 In addition, since the opening distal end side spacer 15 has a plurality of ribs 54 at the corners of the outer peripheral cylindrical flange portion 52 and the disc portion 51, the outer peripheral cylindrical flange portion in the caulking process of the assembly work of the rotor 1. 52 can be prevented from falling too far toward the center, and the caulking fixing force is improved.

また、開口先端側スペーサ１５は、円板部５１の内周側に延び、ロータ開口側に立ち上がる堤防部５５と、堤防部５５の先端を内側に折り曲げた磁石保護部５６とを有する。磁石３１の開口側端面３１gと磁石保護部５６との間に空間が形成されるため、磁石３１に軸方向の衝撃が加わってもそれを和らげることができ、また、回転子１の組付作業の接着工程において、毛細管現象により磁石３１の開口側端面３１gと円板部５１との間を浸透してきた接着剤を受け止め磁石３１の内径側に垂れるのを防止できるなどの効果を発揮する。 Moreover, the opening front end side spacer 15 has an embankment portion 55 that extends to the inner peripheral side of the disc portion 51 and rises to the rotor opening side, and a magnet protection portion 56 that is bent at the front end of the embankment portion 55 inward. Since a space is formed between the opening-side end face 31g of the magnet 31 and the magnet protection portion 56, it can be relieved even if an axial impact is applied to the magnet 31, and the assembly work of the rotor 1 is also possible. In this bonding step, the adhesive that has permeated between the opening-side end surface 31g of the magnet 31 and the disk portion 51 due to the capillary phenomenon can be received to prevent the magnet 31 from drooping to the inner diameter side.

また、磁石保護部５６は、分割凹かしめ部２２bと対向する部位にＲ状凹部５６aを有するため、回転子１の組付作業のかしめ工程において、Ｒ状凹部５６aが磁石保護部５６の縮径を吸収し、固定子２とのギャップが確保される。また、Ｒ状凹部５６aの幅Ｗｒを固定子２のコア２ａの先端幅より狭く設定したため、回転子１内に固定子２を組み込む時、固定子２のコア先端がＲ状凹部５６aをすり抜けて磁石３１に当たり、磁石３１が欠ける不具合を防止できる。 Moreover, since the magnet protection part 56 has the R-shaped recessed part 56a in the site | part facing the division | segmentation recessed crimping part 22b, in the caulking process of the assembly | attachment operation | work of the rotor 1, the R-shaped recessed part 56a reduces the diameter of the magnet protection part 56. And a gap with the stator 2 is secured. Further, since the width Wr of the R-shaped recess 56a is set narrower than the tip width of the core 2a of the stator 2, when the stator 2 is assembled into the rotor 1, the core tip of the stator 2 passes through the R-shaped recess 56a. The problem that the magnet 31 hits the magnet 31 can be prevented.

＜第２実施形態＞
図２０及び図２１は、第２実施形態に係る回転子１の底部側スぺーサ１４を示す。 Second Embodiment
20 and 21 show the spacer 14 on the bottom side of the rotor 1 according to the second embodiment.

図２０及び図２１において、底部側スぺーサ１４は、磁石受部４１の磁石受面４１ａに小凸部根元溝４１hを設けたことを特徴とする。小凸部根元溝４１hを設けたことにより、逃がし空間４１gの増大を図ることができる。更に、小凸部根元溝４１ｈは大きくすることが可能なため、磁石３１の面取部３１ａを廃止することも可能になる。 20 and 21, the bottom spacer 14 is characterized in that a small convex root groove 41 h is provided on the magnet receiving surface 41 a of the magnet receiving portion 41. By providing the small convex root groove 41h, it is possible to increase the escape space 41g. Furthermore, since the small convex root groove 41h can be enlarged, the chamfered portion 31a of the magnet 31 can be eliminated.

＜第３実施形態＞
図２２及び図２３は、第３実施形態に係る回転子１の底部側スぺーサ１４を示す。 <Third Embodiment>
22 and 23 show the spacer 14 on the bottom side of the rotor 1 according to the third embodiment.

図２２及び図２３において、底部側スぺーサ１４は、磁石受部４１の磁石受面４１ａに小凸部逃がし部４１iを設けたことを特徴とする。小凸部逃がし部４１iを設けたことにより、逃がし空間４１gの増大を図ることができる。更に、小凸部逃がし部４１ｉと小凸部根元溝４１ｈと磁石３１の面取部３１ａのうち、任意の２つ又は全てを組み合わせて逃がし空間４１ｇを増大させてもよい。 22 and 23, the bottom side spacer 14 is characterized in that a small convex portion relief portion 41 i is provided on the magnet receiving surface 41 a of the magnet receiving portion 41. By providing the small convex portion relief portion 41i, it is possible to increase the relief space 41g. Furthermore, the escape space 41g may be increased by combining any two or all of the small convex portion relief portion 41i, the small convex portion root groove 41h, and the chamfered portion 31a of the magnet 31.

＜第４実施形態＞
図２４は、第４実施形態に係る回転子１の底部側スぺーサ１４及びロータ１２の要部の断面を示す。 <Fourth embodiment>
FIG. 24 shows a cross section of the main part of the bottom side spacer 14 and the rotor 12 of the rotor 1 according to the fourth embodiment.

図２４において、底部側スぺーサ１４は、ロータ１２の固定凸部２１ｇに挿入される固定溝４３を有する。固定溝４３は、完全リング状に形成され、あるいは、円周上に複数に分割されて形成される。固定溝４３は、外径側にロータ１２の固定凸部２１ｇの外径側傾斜凸部２１ｈに対向する傾斜溝部（外径側傾斜溝部）４３ａ、内径側にロータ１２の固定凸部２１gの内径側傾斜凸部２１iに対向する傾斜溝部（内径側傾斜溝部）４３ｂを有する。このような構成によっても、第１実施形態と同様に、回転子１の組付作業のロータ加圧工程において、ロータ１２の固定凸部２１ｇと底部側スペーサ１４の固定溝４３が嵌合し、磁石受部４１が変形して磁石１３の内径側から内側にはみ出ることを防止することができる。 In FIG. 24, the bottom side spacer 14 has a fixing groove 43 to be inserted into the fixing convex portion 21 g of the rotor 12. The fixing groove 43 is formed in a complete ring shape or divided into a plurality of parts on the circumference. The fixed groove 43 has an inclined groove part (outer diameter side inclined groove part) 43a facing the outer diameter side inclined convex part 21h of the fixed convex part 21g of the rotor 12 on the outer diameter side, and an inner diameter of the fixed convex part 21g of the rotor 12 on the inner diameter side. It has an inclined groove part (inner diameter side inclined groove part) 43b facing the side inclined convex part 21i. Even with such a configuration, similarly to the first embodiment, in the rotor pressurization step of the assembly work of the rotor 1, the fixed convex portion 21g of the rotor 12 and the fixed groove 43 of the bottom side spacer 14 are fitted, It is possible to prevent the magnet receiving portion 41 from being deformed and protruding from the inner diameter side of the magnet 13 to the inside.

＜第５実施形態＞
図２５は、第５実施形態に係る回転子１の磁石１３を示す。この磁石１３は、４分割された磁石３１からなり、磁石３１を２個ずつ接触させて隙間を無くし、磁石間平行隙間部３２を１８０度対向させて２ヶ所に減少させている。この実施形態によると、磁石１３の体積が増大し、発電性能が向上する。 <Fifth Embodiment>
FIG. 25 shows the magnet 13 of the rotor 1 according to the fifth embodiment. The magnet 13 is composed of four divided magnets 31. Two magnets 31 are brought into contact with each other to eliminate a gap, and the inter-magnet parallel gap portions 32 are opposed to each other by 180 degrees to be reduced to two locations. According to this embodiment, the volume of the magnet 13 increases and the power generation performance is improved.

＜第６実施形態＞
図２６及び図２７は、第６実施形態に係る回転子１の開口先端側スぺーサ１５を示す。この開口先端側スぺーサ１５は、磁石保護部５６を磁石３１の内周面３１eに沿って折り曲げ、固定子２の開口側ボビン鍔部２gと対向させ、コア２aまで達しない長さに設定している。この開口先端側スぺーサ１５によると、コア２aとのエアギャップを増大させることなく磁石保護範囲の拡大を図ることができる。 <Sixth Embodiment>
FIG.26 and FIG.27 shows the opening front end side spacer 15 of the rotor 1 which concerns on 6th Embodiment. The opening tip side spacer 15 is set to a length that does not reach the core 2a by bending the magnet protection part 56 along the inner peripheral surface 31e of the magnet 31 and facing the opening side bobbin collar 2g of the stator 2. doing. According to the opening tip side spacer 15, the magnet protection range can be expanded without increasing the air gap with the core 2a.

＜第７実施形態＞
図２８は、第７実施形態に係る開口先端側スペーサ１５を示す。この開口先端側スペーサ１５は、磁石保護部５６を、磁石３１の内周面３１ｅからはみ出さないよう磁石３１側に折り曲げて構成される。図１６図示の開口先端側スペーサ１５の場合、磁石保護部１５に外力が加わると、磁石３１の端面３１ｇに向かって変形するおそれが生じるが、図２８図示の構成にすると、磁石保護部５６の変形を防止することができる。 <Seventh embodiment>
FIG. 28 shows the opening distal end side spacer 15 according to the seventh embodiment. The opening distal end side spacer 15 is configured by bending the magnet protection part 56 toward the magnet 31 so as not to protrude from the inner peripheral surface 31 e of the magnet 31. In the case of the opening front end side spacer 15 shown in FIG. 16, when an external force is applied to the magnet protection unit 15, there is a risk of deformation toward the end surface 31 g of the magnet 31. Deformation can be prevented.

１回転子
２固定子
２a コア
２g 開口側ボビン鍔部
１２ロータ
１３磁石（全体としての磁石）
１４底部側スぺーサ
１５開口先端側スぺーサ
２１底板部
２１d 固定溝
２１g 固定凸部
２２円筒部
２２b 分割凹かしめ部
２２c 内周面
３１磁石（個々の磁石）
３１a 面取部
３１ｂ磁石軸方向端面
３１c 外径側円周方向端面
３１d 小凸部圧入面
３１e 内周面
３１g 開口側端面
３２磁石間平行隙間部
４１a 磁石受面
４１c 小凸部
４１ｄ内周面
４１e 内周凹部
４１f 接着剤逃がし溝
４１g 逃がし空間
４１h 小凸部根元溝（逃がし空間）
４１i 小凸部逃がし部（逃がし空間）
４２固定凸部
４３固定溝
５１円板部
５２外周円筒鍔部
５４リブ
５５堤防部
５６磁石保護部
５６a Ｒ状凹部 DESCRIPTION OF SYMBOLS 1 Rotor 2 Stator 2a Core 2g Opening side bobbin collar 12 Rotor 13 Magnet (magnet as a whole)
14 bottom side spacer 15 opening tip side spacer 21 bottom plate part 21d fixing groove 21g fixing convex part 22 cylindrical part 22b divided concave caulking part 22c inner peripheral surface 31 magnet (individual magnet)
31a Chamfered portion 31b Magnet axial end surface 31c Outer diameter side circumferential end surface 31d Small convex portion press-fit surface 31e Inner peripheral surface 31g Open side end surface 32 Inter-magnet parallel gap portion 41a Magnet receiving surface 41c Small convex portion 41d Inner peripheral surface 41e Inner peripheral recess 41f Adhesive relief groove 41g Escape space 41h Small convex root groove (Escape space)
41i Small convex relief (relief space)
42 fixed convex part 43 fixed groove 51 disc part 52 outer peripheral cylindrical collar part 54 rib 55 dike part 56 magnet protection part 56a R-shaped concave part

Claims

ロータの円筒部の内周面に複数分割されて円周状に配設される磁石と、隣り合う磁石間に形成される磁石間平行隙間部に圧入される小凸部を有する底部側スペーサとを備えた磁石発電機の回転子において、
前記各磁石の円周方向両端面に、前記磁石間平行隙間部を生成する小凸部圧入面が形成され、該磁石の外径側円周方向両端面と該磁石の軸方向両端面とで囲まれた四辺形の四隅に、該小凸部圧入面まで達する面取部を設けて、該小凸部圧入時の前記小凸部の削りカス又は変形部を収容する逃がし空間が形成され、
前記底部側スペーサは磁石受面を有する磁石受部を備え、前記磁石受部の内周において前記小凸部と対向する部位に、内周凹部が設けられたことを特徴とする磁石発電機の回転子。 A magnet which is divided into a plurality of portions on the inner peripheral surface of the cylindrical portion of the rotor and arranged circumferentially; a bottom side spacer having a small convex portion which is press-fitted into a parallel gap between magnets formed between adjacent magnets; In the rotor of a magnet generator with
The circumferentially opposite end faces of each magnet, small protrusions press-fitting surface to generate a parallel gap portions between said magnet is formed in an outer diameter side circumferential end surfaces and both axial end faces of said magnets of said magnet the four corners of the enclosed quadrilateral, provided a chamfer reaching the small protrusions press-fitting surface, spatial relief to accommodate the shavings or deformed portion of the small protrusions at the small protrusions press-fitted is formed,
The bottom side spacer includes a magnet receiving portion having a magnet receiving surface, and an inner peripheral concave portion is provided at a portion facing the small convex portion on the inner periphery of the magnet receiving portion . Rotor.

ロータの円筒部の内周面に複数分割されて円周状に配設される磁石と、隣り合う磁石間に形成される磁石間平行隙間部に圧入される小凸部を有する底部側スペーサとを備えた磁石発電機の回転子において、
前記各磁石は、前記磁石間平行隙間部を形成する小凸部圧入面を有し、前記底部側スペーサは、前記小凸部の根元に、前記小凸部圧入時の前記小凸部の削りカス又は変形部を収容する逃がし空間を有し、
前記底部側スペーサは磁石受面を有する磁石受部を備え、前記磁石受部の内周において前記小凸部と対向する部位に、内周凹部が設けられたことを特徴とする磁石発電機の回転子。 A magnet which is divided into a plurality of portions on the inner peripheral surface of the cylindrical portion of the rotor and arranged circumferentially; a bottom side spacer having a small convex portion which is press-fitted into a parallel gap between magnets formed between adjacent magnets; In the rotor of a magnet generator with
Wherein each magnet has a small protrusions press-fitting surface to form a parallel gap portions between said magnets, said bottom side spacer, the base of the small protrusions, cutting of the small protrusions at the small protrusions press fit It has an escape space to accommodate the residue or deformed part ,
The bottom side spacer includes a magnet receiving portion having a magnet receiving surface, and an inner peripheral concave portion is provided at a portion facing the small convex portion on the inner periphery of the magnet receiving portion . Rotor.

前記ロータの底板部に固定溝又は固定凸部を設けるとともに前記底部側スペーサに前記固定溝又は前記固定凸部と嵌合する固定凸部又は固定溝を設けた請求項１または２に記載の磁石発電機の回転子。 The magnet according to claim 1, wherein a fixed groove or a fixed groove is provided in the bottom plate portion of the rotor, and a fixed convex portion or a fixed groove that fits the fixed groove or the fixed convex portion is provided in the bottom side spacer. Generator rotor.

前記底部側スペーサの前記磁石受面に、前記内周凹部に結合して接着剤逃がし溝を設けた請求項３に記載の磁石発電機の回転子。 The rotor for a magnet generator according to claim 3 , wherein an adhesive relief groove is provided on the magnet receiving surface of the bottom side spacer so as to be coupled to the inner peripheral recess.

ロータの円筒部の内周面に円周状に配設される磁石と、該磁石のロータ開口側に配される非磁性の開口先端側スペーサとを備えた磁石発電機の回転子において、
前記開口先端側スペーサは、前記磁石の開口側端面に当接する円板部と、該円板部の外周側に延び、前記ロータの前記円筒部の前記内周面に接する外周円筒鍔部とを有し、
前記ロータの前記円筒部の先端の内周寄りに、前記開口先端側スペーサの前記外周円筒鍔部の先端を部分的に内径側に変形させる分割凹かしめ部を形成したことを特徴とする磁石発電機の回転子。 In a rotor of a magnet generator provided with a magnet arranged circumferentially on the inner peripheral surface of the cylindrical portion of the rotor, and a nonmagnetic opening tip side spacer disposed on the rotor opening side of the magnet ,
The opening tip side spacer includes a disc portion that contacts the opening side end surface of the magnet, and an outer peripheral cylindrical collar portion that extends to the outer peripheral side of the disc portion and contacts the inner peripheral surface of the cylindrical portion of the rotor. Have
A magnet power generation characterized in that a split caulking portion is formed near the inner circumference of the tip of the cylindrical portion of the rotor, and the tip of the outer peripheral cylindrical collar portion of the opening tip side spacer is partially deformed to the inner diameter side. Machine rotor.

前記開口先端側スぺーサは、前記外周円筒鍔部と前記円板部との角部に複数のリブを有する請求項５に記載の磁石発電機の回転子。 The rotor of a magnet generator according to claim 5 , wherein the opening tip side spacer has a plurality of ribs at corners of the outer peripheral cylindrical collar portion and the disc portion.

前記開口先端側スペーサは、前記円板部の内周側に延び、ロータ開口側に立ち上がる堤防部と、該堤防部の先端を内側に折り曲げた磁石保護部とを有する請求項５又は６に記載の磁石発電機の回転子。 The opening tip side spacer extends on the inner peripheral side of the disc portion, wherein the bank portion rising rotor opening side, to claim 5 or 6 and a magnet protection portion by bending the tip of該堤proof portion on the inner side Magnet generator rotor.

前記磁石保護部は、前記磁石の内周面からはみ出さないよう磁石側に折り曲げて構成されることを特徴とする請求項７に記載の磁石発電機の回転子。 The rotor of a magnet generator according to claim 7 , wherein the magnet protection part is configured to be bent toward the magnet so as not to protrude from the inner peripheral surface of the magnet.

前記磁石保護部は、前記分割凹かしめ部と対向する部位にＲ状凹部を有する請求項７又は８に記載の磁石発電機の回転子。 The rotor of a magnet generator according to claim 7 or 8 , wherein the magnet protection part has an R-shaped concave part at a part facing the divided concave caulking part.

前記開口先端側スペーサは、前記円板部の内周側に延び、ロータ開口側に立ち上がる堤防部と、該堤防部の先端を前記磁石の内周面側に折り曲げ、ステータの開口側ボビンの鍔部と対向する磁石内周保護部とを有し、前記磁石内周保護部の先端は前記ステータのコアまで達しない請求項５又は６に記載の磁石発電機の回転子。 The opening front end side spacer extends to the inner peripheral side of the disk portion, rises to the rotor opening side, bends the front end of the dike portion to the inner peripheral surface side of the magnet, The rotor of a magnet generator according to claim 5 , further comprising: a magnet inner periphery protection portion facing the portion, wherein a tip of the magnet inner periphery protection portion does not reach the stator core.