JPH0235548B2

JPH0235548B2 - 2 KYOKUKUROOHOORUGATAROOTA

Info

Publication number: JPH0235548B2
Application number: JP3289882A
Authority: JP
Inventors: Takayoshi Tajima; Heihachiro Niizawa
Original assignee: Fuji Electric Co Ltd
Current assignee: Fuji Electric Co Ltd
Priority date: 1982-03-01
Filing date: 1982-03-01
Publication date: 1990-08-10
Anticipated expiration: 2002-03-01
Also published as: JPS58151851A

Description

【発明の詳細な説明】本発明は、２極クローポール形ロータの改良に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a two-pole claw-pole rotor.

一般に、ロータ軸が貫通する基部と該基部から
爪状に突出するクロー部とからなる同形の一対の
クローポールを有し、両クローポールは、クロー
部側が互いに対面しており、且つロータ軸線を含
む平面を境として、両クローポールのクロー部が
互いに反対側に位置して互いに180°の回転対称に
配置されているような２極クローポール形ロータ
は、４極、６極等のクローポール形ロータと異な
り、その構造上、偶力アンバランスが発生すると
いう問題がある。 Generally, there is a pair of claw poles of the same shape, each consisting of a base through which the rotor shaft passes and a claw portion that protrudes like a claw from the base. A two-pole claw-pole rotor, in which the claw parts of both claw-poles are located on opposite sides of each other and are arranged 180° rotationally symmetrically with respect to the containing plane, is a four-pole, six-pole, etc. claw pole rotor. Unlike a rotor type rotor, there is a problem in that couple imbalance occurs due to its structure.

また、両クローポール間に空〓があるので、風
損、風切音が大きいという問題がある。 Furthermore, since there is an air space between both claw poles, there is a problem that wind damage and wind noise are large.

本発明は、上記問題に鑑みてなされたもので、
第１の発明は、両クローポールの基部に、偶力ア
ンバランス除去のためのバランス部を形成すると
いう簡単な構成によつて偶力バランスを図るよう
にしたものである。 The present invention was made in view of the above problems, and
The first invention aims at couple balance through a simple structure in which a balance portion for removing couple imbalance is formed at the bases of both claw poles.

また、第２の発明は、第１の発明に加えて、両
クローポール間の非磁性材料のカバーまたは充填
材で閉塞するという簡単な構成によつて風損、風
切音の減少を図るようにしたものである。 Further, in addition to the first invention, the second invention aims to reduce wind damage and wind noise by a simple configuration in which both claw poles are closed with a non-magnetic material cover or filler. This is what I did.

以下、本発明の実施例を添付図面について詳細
に説明する。 Embodiments of the invention will now be described in detail with reference to the accompanying drawings.

第１図及び第２図に示すように、２極クローポ
ール形ロータ１を有する回転電機２は、磁気ボス
３，３を一体化した蓋板４，４で両端部を閉塞し
た円筒状のケーシング５を備え、該ケーシング５
内の軸心位置には、蓋板４，４の軸受６，６でロ
ータ軸７を回転自在に支承すると共に、該ロータ
軸７には、同形の一対のクローポール８，８を焼
きばめで嵌着する。 As shown in FIGS. 1 and 2, a rotating electrical machine 2 having a two-pole claw-pole rotor 1 has a cylindrical casing whose both ends are closed with cover plates 4, 4 which integrate magnetic bosses 3, 3. 5, the casing 5
A rotor shaft 7 is rotatably supported by bearings 6, 6 of the cover plates 4, 4 at the axial center position of the inside, and a pair of claw poles 8, 8 of the same shape are shrink-fitted to the rotor shaft 7. Fit into place.

該クローポール８，８に対向するケーシング５
の内周囲には、界磁コイル９，９や鉄心１０等が
取付けられている。 A casing 5 facing the claw poles 8, 8
Field coils 9, 9, an iron core 10, etc. are attached to the inner periphery.

上記クローポール８，８は、ロータ軸７が貫通
する基部１１，１１と、該基部１１，１１から爪
状に突出するクロー部１２，１２とからなり、両
クローポール８，８は、クロー部１２，１２側が
互いに対面しており、且つロータ軸線Ａを含む平
面を境として、両クローポール８，８のクロー部
１２，１２が互いに反対側に位置して互いに180°
の回転対称に配置されている。 The claw poles 8, 8 are made up of base parts 11, 11 through which the rotor shaft 7 passes, and claw parts 12, 12 that protrude like claws from the base parts 11, 11. 12, 12 sides face each other, and the claw parts 12, 12 of both claw poles 8, 8 are located on opposite sides of each other with the plane containing the rotor axis A as the boundary, and are oriented at 180 degrees to each other.
are arranged rotationally symmetrically.

上記クローポール８，８の基部１１，１１に
は、第４図ａにも示すように、上記ロータ軸線Ａ
を含む平面を境としたクロー部１２，１２側の半
分部に属する部分１１ａ，１１ａに対して、その
反対側の半分部に属する部分１１ｂ，１１ｂに、
軸直交方向に偏心するバランス部（偏心部）１
３，１３を形成する。 At the bases 11, 11 of the claw poles 8, 8, as shown in FIG.
To the parts 11a, 11a belonging to the half part on the side of the claw parts 12, 12 bordering on the plane containing the plane, to the parts 11b, 11b belonging to the half part on the opposite side,
Balance part (eccentric part) 1 that is eccentric in the direction perpendicular to the axis
3, 13 is formed.

しかして、上記のように２極クローポール形ロ
ータ１を構成すれば、バランス部１３，１３によ
り偶力バランスが改善される。また、ロータ１単
体でバランスを取ることができる。 Therefore, if the two-pole claw-pole rotor 1 is configured as described above, the couple balance is improved by the balance portions 13, 13. Further, the rotor 1 alone can be balanced.

上記ロータ１は、ロータ軸７にクローポール
８，８を嵌着した構成であつたが、第３図に示す
ように、各クローポール８′，８′にロータ軸７′，
７′を一体形成すると共に、各クローポール８′，
８′に非磁性継手軸１４を焼きばめして連結する
構成のロータ１′であつてもよい。 The rotor 1 has a structure in which the claw poles 8, 8 are fitted onto the rotor shaft 7, and as shown in FIG.
7', and each claw pole 8',
The rotor 1' may have a structure in which the non-magnetic joint shaft 14 is shrink-fitted to the rotor 8'.

また、上記バランス部１３，１３は、正円で偏
心加工したものであつて加工が容易であるが、第
４図ｂに示すような四半円で偏心加工したバラン
ス部１３、あるいは第４図ｃ及び第４図ｂに示す
ような切欠部１５を形成したバランス部１３″で
あつてもよい。 In addition, the balance parts 13, 13 are made into a perfect circle and eccentrically machined, and are easy to process. Alternatively, the balance part 13'' may have a notch 15 as shown in FIG. 4b.

一方、第５図ａ及び第５図ｂに示すように、上
記クローポール８，８，８′，８′の外周にまたが
つて、薄肉（１〜２mm以内）で非磁性の円筒状閉
塞カバー１６を嵌合固定し、クローポール８，
８，８′，８′間の空〓１７をカバーすると共に、
クローポール８，８，８′，８′に空〓１７と外部
とを連通する空気孔１８，１８を形成する。 On the other hand, as shown in FIGS. 5a and 5b, a thin (within 1 to 2 mm) non-magnetic cylindrical closing cover is placed over the outer periphery of the claw poles 8, 8, 8', 8'. 16 is fitted and fixed, and the claw pole 8,
Covering the space between 8, 8', 8' = 17,
Air holes 18, 18 are formed in the claw poles 8, 8, 8', 8' to communicate the air hole 17 with the outside.

このように、空〓１７を閉塞すれば、クローポ
ール８，８，８′，８′による風損、風切音が減少
するようになる。 By closing the air hole 17 in this manner, wind damage and wind noise caused by the claw poles 8, 8, 8', and 8' are reduced.

また、第６図ａ及び第６図ｂに示すように、上
記閉塞カバー１６に代えて、空〓１７に非磁性の
合成樹脂１９を充填する構成としてもよい。 Furthermore, as shown in FIGS. 6a and 6b, instead of the closing cover 16, the cavity 17 may be filled with a non-magnetic synthetic resin 19.

以上の説明からも明らかなように、本発明に係
る第１の発明は、両クローポールにバランス部を
形成したものであるから、偶力バランスが改善さ
れるようになる。 As is clear from the above description, in the first aspect of the present invention, balance portions are formed on both claw poles, so that the couple balance is improved.

また、第２の発明は、両クローポール間の空〓
を非磁性材料のカバーまたは充填材で閉塞したも
のであるから、風損、風切音が減少するようにな
る。 In addition, the second invention is a space between both claw poles.
Since it is closed with a non-magnetic cover or filler, wind loss and wind noise are reduced.

さらに、第１、第２の発明とも構造はきわめて
簡単で、コスト安に製作できる利点がある。 Furthermore, both the first and second inventions have the advantage of being extremely simple in structure and can be manufactured at low cost.

[Brief explanation of drawings]

第１図は回転電機の断面図、第２図はロータの
断面図、第３図は変形例のロータの断面図、第４
図ａ、第４図ｂ及び第４図ｃはバランス部の正面
図、第４図ｄは第４図ｃの側面図、第５図ａ及び
第５図ｂは閉塞カバーを有するロータの断面図、
第６図ａ及び第６図ｂは合成樹脂を充填したロー
タの断面図である。１，１′……２極クローポール形ロータ、２…
…回転電機、５……ケーシング、７，７′……ロ
ータ軸、８，８′……クローポール、１１……基
部、１２……クロー部、１３，１３′，１３″……
バランス部、１６……閉塞カバー、１７……空
〓、１９……合成樹脂。 Figure 1 is a sectional view of the rotating electric machine, Figure 2 is a sectional view of the rotor, Figure 3 is a sectional view of a modified rotor, and Figure 4 is a sectional view of the rotor.
Figures a, 4b and 4c are front views of the balance section, Figure 4d is a side view of Figure 4c, and Figures 5a and 5b are cross-sectional views of the rotor with a closing cover. ,
Figures 6a and 6b are cross-sectional views of a rotor filled with synthetic resin. 1, 1'...2 pole claw pole rotor, 2...
... Rotating electric machine, 5 ... Casing, 7, 7' ... Rotor shaft, 8, 8' ... Claw pole, 11 ... Base, 12 ... Claw part, 13, 13', 13'' ...
Balance part, 16...Closing cover, 17...Empty, 19...Synthetic resin.

Claims

[Claims] 1. A pair of claw poles having the same shape, each consisting of a base portion through which the rotor shaft passes and a claw portion protruding from the base portion in the form of a claw, the claw portion sides of both claw poles facing each other. , and in a two-pole claw pole rotor in which the claw parts of both claw poles are located on opposite sides of each other and are arranged 180° rotationally symmetrically with respect to a plane containing the rotor axis, each claw pole At least a part of the base is formed as a balance part for removing couple unbalance, and the balance part is a part belonging to a half part on the claw part side bordering the plane, and a half part on the opposite side thereof. A two-pole claw-pole rotor characterized by having thick walls in the parts that belong to it. 2 It has a pair of claw poles of the same shape, each consisting of a base through which the rotor shaft passes and a claw portion that protrudes like a claw from the base, the claw portion sides of both claw poles facing each other, and including the rotor axis. In a two-pole claw pole rotor in which the claw parts of both claw poles are located on opposite sides of each other with a plane as the boundary and are arranged in rotational symmetry of 180°, at least a part of the base of each claw pole is The balance part is formed as a balance part for removing couple unbalance, and the balance part has a wall thickness of a part belonging to the half part on the opposite side of the claw part side bordering the plane. 1. A two-pole claw pole rotor, characterized in that the space between both claw poles is closed with a cover or filler made of a non-magnetic material.