JPS60170433A - Rotor for rotary electric machine - Google Patents

Rotor for rotary electric machine

Info

Publication number
JPS60170433A
JPS60170433A JP59023292A JP2329284A JPS60170433A JP S60170433 A JPS60170433 A JP S60170433A JP 59023292 A JP59023292 A JP 59023292A JP 2329284 A JP2329284 A JP 2329284A JP S60170433 A JPS60170433 A JP S60170433A
Authority
JP
Japan
Prior art keywords
permanent magnet
rotor
permanent
electric machine
boss
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP59023292A
Other languages
Japanese (ja)
Inventor
Norio Kanai
金井　紀夫
Fumio Kozai
香西　文男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP59023292A priority Critical patent/JPS60170433A/en
Publication of JPS60170433A publication Critical patent/JPS60170433A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2726—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
    • H02K1/2733—Annular magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

PURPOSE:To prevent a permanent magnet from being put under radiant outward force when an axis of rotation is pressed into the retaining material for the permanent magnet, by setting a space between the permanent magnet inside and the retaining material for the permanent magnet. CONSTITUTION:The retaining material 2, 3 for a permanent magnet includes the flange portions 21, 31 in contact with the sides 11, 12 in the axial direction of a ring-formed permanent magnet 1, and the boss portions 22, 32 projected into the space inside the permanent magnet 1. The dimension of the boss portions 22, 32 in the radial direction is determined so that a space 5 can be formed between the outer surface 24, 34 of each boss portion and the inner surface 13 of the permanent magnet 1. An axis 4 of rotation is pressed into an axis slot 23, 33 formed in the middle of the boss portions 22, 32 of the retaining material 2, 3 for the permanent magnet. Because of the space 5, a radiant outward force is not applied to the permanent magnet when the axis of rotation is pressed into the retaining material for the permanent magnet. Thus, the permanent magnet is prevented from being damaged.

Description

【発明の詳細な説明】 〔発明の技術分野〕 この発明はリング状の永久磁石を、それぞれ前記永久磁
石の軸方向−側面に対接する７ラング部と前記永久磁石
の内方空間内に突出するボス部とを有する一対の永久磁
石保持部材により、前記永久１θ石を挾持するようにし
た、ステップモータ、同曲電動４１，３３等の回転電機
の回転子において、回転軸を永久磁石保持部４４の回転
軸孔に圧入する時に前記永久磁石が回転軸の圧入力によ
り破壊されることのないようにした回転電機の回転子、
特に小形回転機の回転子に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention includes a ring-shaped permanent magnet that protrudes into seven rung portions that are in contact with the axial direction and the side surface of the permanent magnet, respectively, and into the inner space of the permanent magnet. In a rotor of a rotating electric machine such as a step motor or a similar electric motor 41, 33, in which the permanent 1θ stone is held between a pair of permanent magnet holding members having a boss portion, the rotating shaft is connected to the permanent magnet holding portion 44. A rotor for a rotating electric machine, wherein the permanent magnet is not destroyed by the pressing force of the rotating shaft when press-fitting into the rotating shaft hole.
In particular, it relates to the rotor of a small rotating machine.

〔従来技術〕[Prior art]

従来のこの柚の回転子として第１図に示すものがあった
。第１図において、（１）はリング状の永久磁石でその
円周方向にＮ楡・ｓｍが交ｎ：に形成されている。（２
）　、　（３）は一対の水久磁石保持部材であって、そ
れぞれ永久磁石（１）の軸方向−側面（１１）、（１２
）に対接するフランジ：）ｌ（（２１）、（３１）と永
久１６石（１）の内方空間内に突出するボス部（２２）
、（３２）とを有する。（４）は回転１ｌｉｌｌｌ′？
：あって、永久磁石保持部材のボス部の中心ｔ’ｉｌｓ
に形成されたｌＩＩ孔（２３Ｌ（３：３）に圧入された
ものである。第１図の回転子を動盾するには・永久磁石
保持部材副（＃Ａ（２）　、　（３）を永久（ｍ１石（
１）に嵌め込んで々ニいに接着し、回臥軸（４）を軸孔
（２３）、（３３）Ｋ圧入する。しかして、ボス部（２
２）、（２３）が永久磁石（１）の内１＋ｆｆｌ而（１
３）に′活着して歌合されているため、回転ｉｌｌ　（
４）を軸孔（２３）　、　（３３）に圧入する時に永久
イ磁石（１）に放射方向外向きの力が加わり、永久磁石
（１）が破損する欠点かあった。符に、Ａ（久（み石（
１）が、圧縮１ノ６力には強いが引す１（応力には弱い
成形加工されたフェライト１庭石（この池稀土仁糸々１
の睨結磁石は一般にこの″１侘′員を有する）である場
ひ、前記の放射方向外向きの力を受けて円周方向のＩ辰
力を生じ、これによりｆ反損される危１次往が大きい欠
点があった。A conventional rotor for this type of yuzu is shown in Fig. 1. In FIG. 1, (1) is a ring-shaped permanent magnet, and N elms/sm are formed in an intersection n: in the circumferential direction. (2
) and (3) are a pair of hydraulic magnet holding members, which are attached to the axial direction of the permanent magnet (1) and the side surfaces (11) and (12), respectively.
) Opposing flange: ) l ((21), (31) and the boss part (22) protruding into the inner space of the permanent 16 stones (1)
, (32). (4) is rotation 1lill'?
:The center t'ils of the boss part of the permanent magnet holding member
It is press-fitted into the lII hole (23L (3:3)) formed in Eternal (m1 stone (
1) and glue them one by one, and then press-fit the rotating shaft (4) into the shaft holes (23) and (33)K. However, the boss part (2
2), (23) are 1+ffl of the permanent magnet (1) and (1
3) because it is attached and sung together, the rotation ill (
4) into the shaft holes (23) and (33), a radially outward force is applied to the permanent magnet (1), which may cause damage to the permanent magnet (1). On the mark, A
1) is strong against compression 1 no 6 force but weak against tension 1 (molded ferrite 1 garden stone
In general, when a fixed magnet has this "1 side member", it receives the above-mentioned outward force in the radial direction and generates a circumferential direction I force, which causes the risk of freversal damage. There were major drawbacks.

〔発明の楯、安〕[A shield of invention, security]

この発明は従来の回転子のかかる欠点を除去するために
なされたもので、永久磁石の内周＋ｆＩｉと永久磁石保
持部材とのｒｆ＋ｌに間隙を戎りて回１１ム釧を永久磁
石保持部材に圧入する時に永久磁石に放射方向外向きの
力が加わらないようにすると共に、ＭｆＩ記間隙が仔仕
するために永久磁石の回転軸に対する同心度が狂うのを
防止するために永久磁石の軸方向両側面に永久磁石保持
部材のフランジ部をｍ層させるようにした回転上帆の回
転子を提供することを目的とするものである。This invention was made to eliminate this drawback of the conventional rotor, and by creating a gap between the inner periphery of the permanent magnet +fIi and rf+l of the permanent magnet holding member, the rotor can be attached to the permanent magnet holding member. In order to prevent outward force in the radial direction from being applied to the permanent magnet during press-fitting, and to prevent the concentricity of the permanent magnet with respect to the rotation axis from being lost due to the MfI gap, the axial direction of the permanent magnet is It is an object of the present invention to provide a rotor for a rotating upper sail having m layers of flange portions of permanent magnet holding members on both sides.

〔発明の実施例〕[Embodiments of the invention]

以下この弁明の一実施例を４２図について説明する。（
２４）、（３４）はそれぞれ永久磁石保持部材（２）　
、　（３）のボス部（２２）、（３２）の外ｒｆｉＪ　
ｕｒｉであって、ボスｒｆｌ＜（２２）　、　（３２）
はそれぞれその外周ｉ１ｎ　（２４）　、　（３４）と
永久（６石（１）の内周１ｆｆｌ（１３）との間にＩＩ
−ｊｌ　１原（５）かりｔ／成されるように放射方向の
寸法か決められている。永久磁石保持部材（２）　、　
（３）はそれぞれ超行波浴着酊能な材料、例えば熱可塑
性樹脂からなり永久磁石保持部材（２）　、　（３）の
フランジｍ（２１）。An example of this defense will be described below with reference to FIG. (
24) and (34) are respectively permanent magnet holding members (2)
, outside rfiJ of boss parts (22) and (32) of (3)
uri, boss rfl<(22), (32)
are II
The radial dimension is determined so that -jl 1 element (5) t/. Permanent magnet holding member (2),
(3) are flanges m (21) of the permanent magnet holding members (2) and (3), which are each made of a material capable of being attached to an ultraviolet bath, such as a thermoplastic resin.

（３１）は永久磁石（１）の軸方向両側面（１１）。(31) are both axial side surfaces (11) of the permanent magnet (1).

（１２）に超音波浴層により溶着せしめられる。(12) by an ultrasonic bath layer.

永久＆に１石保持部材（２）　、　（３）の接合部（６
）は同様に超音波浴層により、あるいは嵌着剤等の他の
適当持する治具であって・この治具によりこれら各要素
の同１ＩｉＩ１１度が゛確保される。Joint part (6) of permanent & one stone retaining member (2), (3)
) is similarly provided by an ultrasonic bath layer or by other suitable holding tools such as a bonding agent.This jig ensures the same 1IiI11 degree of each of these elements.

次に、かかる回転子の製造方法を説明する。Next, a method for manufacturing such a rotor will be explained.

まず永久（６石（１）を永久磁石保持部材（２）　、　
（３）で挟持固定し、回転軸を永久磁石保持部材（２）
　、　（３）の軸孔（２３’）、（３３）に圧太し、治
具（７）内に挿入して永久磁石（１）、永久磁石保持部
材（２）　、　（３）当な手段で接着する。接着剤を使
用する場合には永久磁石（１）を永久磁イイ保持ｆ’ｆ
ｆｌ倒（２）　、　＜３）−ｃ挟持する以前にホ゛スｔ
￥ｌ５（２２）、（３２）の１汝合（１ｉ１に予め接着
剤を施しておく。更に、接合ＨＨｓ　（６）の接合と同
時またはそれとあい阿り借して永久磁石（１）の軸方向
両側面（ＩＩ）、（１２）に永久磁石保持部材（２）　
、　（３）のフランジｉ７：り（２１）、（３］）を相
酋波溶着により帛鴻さぜる。この時、永久磁石（１）の
軸方向両側面（ＩＦ）、（１２）を粗面（これは自然に
あるもので゛も、意脈闇にル成したものでも良い）にし
ておけは永久磁石保持部材（２）　、　（３）の何科が
ｆｐｉ記祖而の面画に従ってプレ収りされて１１１面、
に強ｌｉ！ｉＩに接合して永久磁石（１）をよりｍ実に
所定の同心位置に保持する。First, attach the permanent (6 stones (1) to the permanent magnet holding member (2),
(3) clamp and fix the rotating shaft with the permanent magnet holding member (2).
, (3) into the shaft holes (23') and (33), and insert it into the jig (7) to attach the permanent magnet (1), permanent magnet holding member (2), and (3) appropriate means. Glue with. When using adhesive, hold the permanent magnet (1) in place f'f
fl (2), <3)-c Before holding the host t
￥15 (22), (32) 1. Apply adhesive in advance to 1i1.Furthermore, at the same time as or in conjunction with joining HHs (6), attach the shaft of permanent magnet (1). Permanent magnet holding member (2) on both sides (II) and (12)
, (3) Flange i7: ri (21), (3)) are welded together by mutual wave welding. At this time, if both axial sides (IF) and (12) of the permanent magnet (1) are made rough (this may be a natural surface or a surface created intentionally), it will be permanent. The classes of magnet holding members (2) and (3) are pre-assembled according to the picture of the founder of FPI, and there are 111 pages.
ni strong li! iI to hold the permanent magnet (1) more precisely in a predetermined concentric position.

なお、上記夷ＴｊＩＪＬ例では永久磁石保持部材（２）
。In addition, in the above TjIJL example, the permanent magnet holding member (2)
.

（３）を超音波浴層ｉＪ’　ｍじな材料で形成して、銅
祈波により永久磁石保持部材（２）　、　（３）のフラ
ンジ都（２１）。(3) is made of the same material as the ultrasonic bath layer iJ', and the permanent magnet holding members (2) and (3) are made of flange caps (21) using copper waves.

（３１）を永久磁石（１）の軸方向両側面（１］、　）
。(31) on both axial sides of the permanent magnet (1) (1], )
.

（１２）　Ｋ溶着させているが・安するに永久磁石保持
部材（２）　、　（３）のフランジ都（２１）、（３１
）を永久磁石（１）の軸万同両Ｍ（ｌ１１川（１１）、
（１２）に浴着させイ１．は艮いの−Ｃあって、他の自
当な溶第１手坂をハｊいることも℃゛きるものである。(12) Although K is welded, the flange capitals (21) and (31) of the permanent magnet holding members (2) and (3) are cheaper.
) is the axis of the permanent magnet (1).
(12) Put on a bathing suit.1. Since it is a -C, it is also possible to break other legitimate first moves.

永久磁石抹持部材（２）　、　（３）の材料は浴着手段
に応じてｉｍ当なものを選足すれは良い。また、永久磁
石保Ｎ　＋７Ｂ拐（２）　、　（３）　ｆｊ合成値脂を
モールドすることによりに良長く形成することか−Ｃ′
さ、永久磁石（１）自材もセンターレス加工により稍良
良く仕上けることかできるので・このように尚粘度仕上
げをする場合には治具（７）は使用しなくとも、単に永
久磁石（１）を永久磁石保持部利（２）　、　（３）の
周糾・に対して同心状に配置するたけで、永久磁石（１
）、保持部材（２）　、　（３）との固着が十分であれ
は、接合面（６）のｗ着は必ずしも必要ではない。The materials for the permanent magnet retaining members (2) and (3) may be appropriately selected depending on the bath attachment means. In addition, it is possible to form a long permanent magnet by molding a permanent magnet with N +7B length (2), (3) fj composite value -C'
Now, since the permanent magnet (1) itself can be finished with a slightly better finish by centerless processing, you can simply use the permanent magnet ( Permanent magnet (1) is simply arranged concentrically with respect to the permanent magnet holding parts (2) and (3).
), holding members (2), and (3) are sufficiently secured, it is not necessarily necessary to bond the joint surface (6) with w.

（発明の効果〕 以上のようにこの発明は永久磁石の内ｍ　ｆＧＩｓと永
久（μ石保持部材との間に間隙を設けたので、回転軸を
永久磁石保青部材に圧入する際に永久磁石に放射方間外
向きの力が加わることがなくなり、従って永久磁石の破
損を防止することができる。従ってまた、永久磁石の放
射方向の厚さを小さくすることかでき、１ｌｌｆｆｉで
慣性の小さい回転子を得ることかできる等の種々な作用
効果が奏される。(Effects of the Invention) As described above, this invention provides a gap between mfGIs in the permanent magnet and the permanent (μ) stone holding member, so when the rotating shaft is press-fitted into the permanent magnet retaining member, the permanent magnet radially outward force is no longer applied to the permanent magnet, and damage to the permanent magnet can therefore be prevented.Therefore, the thickness of the permanent magnet in the radial direction can also be reduced, and rotation with small inertia at 1llffi can be achieved. Various effects are achieved, such as being able to have children.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の回転子の軸方向断面図、第２図はこの発
明の一実施例を示す縦断面図であり１図中向−ね号は同
一部または相当部を示す。図中（１）はリング状永久磁
石、（１１）、、（１２）は永久磁石（１）の軸方向側
面、（１３）は内周面、（２）　、　（３）は永久、磁
石保持部拐、（２］）、（３１）はそのフランジｆｄｓ
、（２２）、（３３）はボス部、（２３）、（３２）は
軸孔、（４）は回転軸、（５）は間隙である。 代理人　弁理士　大　岩　増　雄 第１図 第２図 手続補正書（自発） ９６７ 昭和　年　月　日 特許庁長官殿　曵 １、事件の表示　特願昭５９−２３２９２号２、発明の
名称 回転電機の回転子 ３、補正をする者 代表者片由仁へ部 ４、代理人 ５、補正の対象 明細書の「発明の詳細な説明」の欄 ６補正の内容 （１）明細書の第４頁第９行および第７頁第１２行〜第
１３行の「同心度」をいずれも「同軸度」と訂正する０ 以　上 （２）FIG. 1 is an axial cross-sectional view of a conventional rotor, and FIG. 2 is a vertical cross-sectional view showing an embodiment of the present invention, and the double numerals in FIG. 1 indicate the same or equivalent parts. In the figure, (1) is a ring-shaped permanent magnet, (11), (12) are the axial side surfaces of permanent magnet (1), (13) is the inner peripheral surface, (2) and (3) are permanent magnet holding (2), (31) are the flange fds
, (22) and (33) are boss parts, (23) and (32) are shaft holes, (4) is a rotating shaft, and (5) is a gap. Agent: Masuo Oiwa, Patent Attorney: Written amendment to Figure 1, Figure 2, Procedural Amendment (spontaneous) 967 To the Commissioner of the Japan Patent Office, Month, Showa 1, Indication of the case, Japanese Patent Application No. 59-23292, 2, Name of the invention: Rotating electric machine Rotor 3, Person making the amendment Representative Kata Yuhito Department 4, Agent 5, Column 6 “Detailed Description of the Invention” of the specification to be amended Contents of the amendment (1) Page 4, No. 9 of the specification Correct both "Concentricity" in line and Page 7, Lines 12-13 to "Coaxiality" 0 Above (2)

Claims (3)

【特許請求の範囲】[Claims] （１）　ＩＪング状水久磁石、それぞれ前記永久磁石の
軸方向−側面に対接する７ラング部と前記永久磁石の内
方空間内に突出するボス部とを有する一対の永久（６石
床持部材および前記ボス部の中心ｔ′ｆｓ軸孔を貫通す
る回転軸とを備え、前記の一対の永久磁石保持部材の間
に前記永久磁石を保持してなる回転電機の回転子におい
て、ｌＩａ記ボス部の外周寸法を面記永久磁石の内周寸
法より小さくして前記ボス部の外周１１］１と永久磁石
の内周面との間に間隙を設け、前記の一対の永久磁石保
持部材の７ラング部を永久磁石の軸方内向側聞に溶層さ
せたことを特徴とする回転電機の回転子。(1) An IJ ring-shaped water magnet, a pair of permanent (6-stone floor holding) each having 7 rung parts facing the axial side of the permanent magnet and a boss part protruding into the inner space of the permanent magnet. A rotor for a rotating electrical machine comprising a member and a rotating shaft passing through a center t'fs shaft hole of the boss portion, and holding the permanent magnet between the pair of permanent magnet holding members, 7 of the pair of permanent magnet holding members by making the outer circumferential dimension of the part smaller than the inner circumferential dimension of the permanent magnet and providing a gap between the outer circumference 11 of the boss part and the inner circumferential surface of the permanent magnet. A rotor for a rotating electric machine, characterized in that a rung portion is formed as a melt layer on the axially inward side of a permanent magnet. （２）永久磁石の軸方向向側曲を粗面とした特許請求の
範囲第１Ｊ′！４記載の回転君１機の回り入子。(2) Claim 1 J' where the axial side curve of the permanent magnet is a rough surface! A rotary insert for one machine described in 4. （３）　永久磁石保持部材を超音波溶層可能な材料から
形成して前記永久磁石保持部材を超音波により永久＋ｄ
石に溶層した特許請求の範囲第１項記載の回転電機の回
転ｆ０(3) The permanent magnet holding member is made of a material that can be ultrasonically melted, and the permanent magnet holding member is permanently heated by ultrasonic waves.
Rotation f0 of the rotating electric machine according to claim 1, which is formed in a stone.
JP59023292A 1984-02-10 1984-02-10 Rotor for rotary electric machine Pending JPS60170433A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59023292A JPS60170433A (en) 1984-02-10 1984-02-10 Rotor for rotary electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59023292A JPS60170433A (en) 1984-02-10 1984-02-10 Rotor for rotary electric machine

Publications (1)

Publication Number Publication Date
JPS60170433A true JPS60170433A (en) 1985-09-03

Family

ID=12106528

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59023292A Pending JPS60170433A (en) 1984-02-10 1984-02-10 Rotor for rotary electric machine

Country Status (1)

Country Link
JP (1) JPS60170433A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4946512A (en) * 1988-03-28 1990-08-07 Yoshida Kogyo K. K. Solar energy collector device
WO2005099065A1 (en) * 2004-04-10 2005-10-20 Robert Bosch Gmbh Rotor for an electric motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4946512A (en) * 1988-03-28 1990-08-07 Yoshida Kogyo K. K. Solar energy collector device
WO2005099065A1 (en) * 2004-04-10 2005-10-20 Robert Bosch Gmbh Rotor for an electric motor
US7649293B2 (en) 2004-04-10 2010-01-19 Robert Bosch Gmbh Rotor of an electrical machine

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