JPS63202249A - Rotor for motor - Google Patents
Rotor for motorInfo
- Publication number
- JPS63202249A JPS63202249A JP62031444A JP3144487A JPS63202249A JP S63202249 A JPS63202249 A JP S63202249A JP 62031444 A JP62031444 A JP 62031444A JP 3144487 A JP3144487 A JP 3144487A JP S63202249 A JPS63202249 A JP S63202249A
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- magnet
- cylindrical
- yoke
- rotor
- 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
Links
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 9
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 7
- 239000000696 magnetic material Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000004512 die casting Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910000576 Laminated steel Inorganic materials 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、特に重量の軽減構造を改良した永久磁石形の
電動機用回転子に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention particularly relates to a permanent magnet rotor for an electric motor, which has an improved structure for reducing weight.
従来、永久磁石形電動機の回転子構造として、実開昭５
９−０９７５８８号公報が提案されている。この提案に
よると、回転軸外周と筒状の永久磁石内周との間に形成
された積層鋼板からなるヨークと、永久磁石、表面補強
材をアルミダイカストにより結合させたものが用いられ
ている。この構造においては、永久磁石に多少の寸法の
ばらつきがあっても、アルミダイカストで吸収できるこ
と、バランスウェイト部をダイカスト形状により同時に
成形できることなどの利点がある。しかし、この回転子
は重量が大きい程、回転子の速度応答性が悪くなる（慣
性力の作用）と云う問題があり、かつ、軸受部分の摩擦
摩耗も軸の回転速度の増加に伴なって増加すると云う問
題もある。軸受部の摩耗摩擦は、荷重と滑り速度との相
乗作用（一般にＰｖ値と呼ばれる）で起こるため、高速
運転される軸受においては逆に荷重を軽減しないと異常
摩耗や焼付き等を生じる原因となる０回転子の重量も運
転時の負荷荷重の一部となるので、この重量の大小も極
めて重要な問題である。Conventionally, as a rotor structure of a permanent magnet type electric motor,
No. 9-097588 has been proposed. According to this proposal, a yoke made of laminated steel plates formed between the outer periphery of the rotating shaft and the inner periphery of a cylindrical permanent magnet, a permanent magnet, and a surface reinforcing material are combined by aluminum die-casting. This structure has the advantage that even if there is some dimensional variation in the permanent magnets, it can be absorbed by the aluminum die-casting, and that the balance weight part can be simultaneously molded into the die-cast shape. However, this rotor has the problem that the greater the weight, the worse the speed response of the rotor (effect of inertia), and the friction wear of the bearing increases as the rotational speed of the shaft increases. There is also the problem of increasing numbers. Wear friction in bearings occurs due to the synergistic effect of load and sliding speed (generally referred to as Pv value), so in bearings operated at high speeds, unless the load is reduced, abnormal wear or seizure may occur. Since the weight of the zero rotor also becomes part of the load during operation, the size of this weight is also an extremely important issue.
上記したように従来の回転子構造においては、回転軸外
周と磁石部内周との間が積層鋼板からなるヨークにより
中実状に形成されてこの部分の占める重量比率が大きい
ため回転子の重量を増大させ、速度応答性を低減し軸受
部の摩擦摩耗を生じると云う問題があり、磁石部内周と
回転軸外周に筒状の中空部を設は重量軽減を図ることに
ついての配慮がなされていなかった。As mentioned above, in the conventional rotor structure, the space between the outer circumference of the rotating shaft and the inner circumference of the magnet part is formed into a solid shape by a yoke made of laminated steel plates, and this portion accounts for a large weight ratio, increasing the weight of the rotor. This has the problem of reducing speed response and causing friction and wear on the bearing part, and no consideration was given to reducing weight by providing cylindrical hollow parts on the inner periphery of the magnet part and the outer periphery of the rotating shaft. .
本発明は上記の状況に鑑みなされたものであり、重量を
大幅に軽減できる電動機用回転子を提供することを目的
としたものである。The present invention was made in view of the above situation, and an object of the present invention is to provide a rotor for an electric motor whose weight can be significantly reduced.
上記目的は、電動機の回転軸に嵌合同着されたスリーブ
と、該スリーブ外周に円筒状の中空部を形成し配設され
た筒状のヨークと、筒状に形成され該ヨーク外周に嵌合
配設された永久磁石及び該磁石外周に嵌合固定された補
強部材管とを設けた電動機用回転子により達成される。The above purpose is to provide a sleeve that is fitted and attached to a rotating shaft of an electric motor, a cylindrical yoke that is disposed with a cylindrical hollow part formed on the outer periphery of the sleeve, and a cylindrical yoke that is formed in a cylindrical shape and that is fitted on the outer periphery of the yoke. This is achieved by a rotor for an electric motor that is provided with a permanent magnet and a reinforcing member tube that is fitted and fixed to the outer periphery of the magnet.
後述の実施例の説明中にも記載されているように、回転
軸に嵌合固定されるスリーブ１の外周には円筒状の中空
部８を形成し筒状のヨーク２が配設され、スリーブ１及
びヨーク２の両端部はフランジ４．４ａにより保持固定
されている。従って、中空部８の体積分に相当する回転
子の重量が軽減される。As will be described later in the description of the embodiment, a cylindrical hollow part 8 is formed on the outer periphery of the sleeve 1 which is fitted and fixed to the rotating shaft, and a cylindrical yoke 2 is disposed therein. Both ends of yoke 1 and yoke 2 are held and fixed by flanges 4.4a. Therefore, the weight of the rotor corresponding to the volume of the hollow portion 8 is reduced.
以下本発明の電動機用回転子を実施例を用い第１図ない
し第６図により説明する。第１図は縦断面図、第２図は
第１図のＡ−Ａ矢視断面図、第３図ないし第５図はそれ
ぞれ第１図のスリーブ、フランジ及び円筒状磁石の斜視
図、第６図は同じく留め金の断面図である。図において
、１は鋼材層のスリーブ、２は円筒状の磁性材料製ヨー
ク、３は円筒状のフェライト磁石、４．４ａは金属製の
フランジ、５．５ａは軟質金属製の留め金、６は非磁性
材料の補強部材管である。スリーブ１は軸心側に回転軸
（図示せず）を貫通固定する結合部７を有し結合部７に
回転軸を圧入等によって結合されるようになっている。DESCRIPTION OF THE PREFERRED EMBODIMENTS The rotor for an electric motor according to the present invention will be explained below using embodiments with reference to FIGS. 1 to 6. 1 is a longitudinal sectional view, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, FIGS. 3 to 5 are perspective views of the sleeve, flange, and cylindrical magnet in FIG. The figure is also a sectional view of the clasp. In the figure, 1 is a sleeve made of a steel layer, 2 is a cylindrical yoke made of magnetic material, 3 is a cylindrical ferrite magnet, 4.4a is a metal flange, 5.5a is a soft metal clasp, and 6 is a cylindrical yoke made of magnetic material. This is a reinforcing member tube made of non-magnetic material. The sleeve 1 has a coupling part 7 on the axial center side through which a rotating shaft (not shown) is inserted and fixed, and the rotating shaft is coupled to the coupling part 7 by press-fitting or the like.
そして、スリーブ１の外周とヨーク２の内周との間に円
筒状の中空部８がフランジ４．４ａを介在し形成され、
ヨーク２の外周にフェライト磁石３、フェライト磁石３
の外周に補強部材管６が配設されている。A cylindrical hollow part 8 is formed between the outer periphery of the sleeve 1 and the inner periphery of the yoke 2 with a flange 4.4a interposed therebetween.
A ferrite magnet 3 is placed on the outer circumference of the yoke 2.
A reinforcing member tube 6 is disposed around the outer periphery of the reinforcing member tube 6.
スリーブ１の上下両端部には、第３図に示すように外周
に環状溝９．９ａが設けられており、また、フランジ４
の内周部には第４図に示す如く段差部１０が設けられて
いる。そして、スリーブ１の外周にヨーク２及びフェラ
イト磁石３が差し込まれ、さらに、磁石３の上下部に留
め金５．５ａが差し込まれた後、ヨーク２．磁石３及び
留め金５．５ａを挟持する形にフランジ４．４ａが上下
から差し込まれる。そして、スリーブ１の上下端部外周
とフランジ４．４ａの内周の段差部１ｏとの間に生じる
隙間部１１、ｌｌａに押刃（図示せず）が挿入され第１
図の矢印方向に上下から加圧されることによりフランジ
４．４ａの肉の一部が環状溝９．９ａ内に塑性変形流入
し、スリーブ１とフランジ４．４ａが強固に加締め結合
される。At both upper and lower ends of the sleeve 1, an annular groove 9.9a is provided on the outer periphery as shown in FIG.
As shown in FIG. 4, a stepped portion 10 is provided on the inner peripheral portion of the holder. Then, the yoke 2 and the ferrite magnet 3 are inserted into the outer circumference of the sleeve 1, and the clasps 5.5a are inserted into the upper and lower parts of the magnet 3, and then the yoke 2. The flange 4.4a is inserted from above and below to sandwich the magnet 3 and the clasp 5.5a. Then, a push blade (not shown) is inserted into the gap 11, lla created between the outer periphery of the upper and lower ends of the sleeve 1 and the stepped portion 1o of the inner periphery of the flange 4.4a.
By being pressurized from above and below in the direction of the arrow in the figure, a part of the flesh of the flange 4.4a is plastically deformed and flows into the annular groove 9.9a, and the sleeve 1 and the flange 4.4a are firmly crimped and connected. .
しかる後に、磁石３の外周に補強部材管６が嵌入されて
第１図の如き回転子が完成される。Thereafter, the reinforcing member tube 6 is fitted around the outer periphery of the magnet 3, and the rotor as shown in FIG. 1 is completed.
上記のスリーブ１とフランジ４．４ａとの結合において
は、原則的にスリーブ１の材質よりフランジ４．４ａの
材質をより軟材とすることにより良好な結合が得られる
。本実施例の如くスリーブ１の材質が鋼材の場合は、フ
ランジ４，４ａの材質としてアルミニウム及びアルミニ
ウム合金、亜鉛及び亜鉛合金、銅及び銅合金のいずれを
用いても良好な結合が得られている。また、スリーブ１
に硬鋼を用いた場合にフランジ４．４ａ材に軟鋼を組み
合わせても良好な結合が得られる。そして、環状溝９．
９ａは、流入した金属の楔効果と圧縮残留応力が生じる
形状であれば任意の形状が使用でき、本実施例ではねじ
状の溝を用いているが角形溝、円形溝等でも同様の加締
め効果が得られる。溝の条数も、単−条、複数条等の任
意の条数を加締めの必要強度に応じて選定すればよい。In the above-described connection between the sleeve 1 and the flange 4.4a, good connection can be obtained by, in principle, making the material of the flange 4.4a softer than the material of the sleeve 1. When the sleeve 1 is made of steel as in this embodiment, a good bond can be obtained regardless of whether the flanges 4, 4a are made of aluminum and aluminum alloys, zinc and zinc alloys, copper and copper alloys. . Also, sleeve 1
When hard steel is used for the flange 4.4a, a good bond can be obtained even if mild steel is used for the flange 4.4a material. and an annular groove 9.
Any shape can be used for 9a as long as it produces a wedge effect and compressive residual stress of the inflowing metal, and although a screw-shaped groove is used in this example, a square groove, a circular groove, etc. can also be crimped in the same way. Effects can be obtained. The number of grooves may be selected from a single groove, multiple grooves, etc. depending on the required strength of crimping.
尚、スリーブ１の胴体部に設けられた穴１２（第３図参
照）は、ガス抜き用の孔で本実施例の回転子が焼成めに
よって固定される場合、万一、中空部８内に水滴等が残
留していたとき発生する水蒸気等の高圧を大気中に解放
し、スリーブ１、ヨーク２の変形、あるいはフランジ４
．４ａの抜は等を防止するためのものである。従って、
回転軸が圧入により固着の場合には穴１２は不要である
。Note that the hole 12 (see FIG. 3) provided in the body of the sleeve 1 is a hole for venting gas, and if the rotor of this embodiment is fixed by firing, it should be noted that the hole 12 (see FIG. 3) is a hole for venting gas. The high pressure of water vapor generated when water droplets remain is released into the atmosphere, and the sleeve 1, yoke 2 is deformed, or the flange 4
．． The omission of 4a is to prevent such problems. Therefore,
If the rotating shaft is fixed by press-fitting, the hole 12 is not necessary.
円筒状永久磁石３には、上下両端に第５図に示した如き
半径方向に切欠部１３．１３ａが設けられており、一方
、フランジ４．４ａの磁石３側には第４図に示すように
切欠部１４が設けられ、かつ、留め金５．５ａには第６
図のように上下方向（厚み方向）に突起部１５ａ、１５
ｂが設けられている。そして、フランジ４．４ａにて留
め金５．５ａを介在し磁石３を軸方向から挟持したとき
、留め金５，５ａの突起部１５ａがフランジ４．４ａの
切欠部１４と係合し、突起部１５ｂが磁石３の切欠部１
３．１３ａと係合し回転時の磁石３の回り止め作用を行
なうようになっている。第６図の例では、留金５．５ａ
の突起部１５ａ、１５ｂを９０度ずらした角度位置に配
置したが、板厚方向の対象位置を含む任意の位置に配置
することができる。また、留め金５，５ａの材質は、そ
の使用目的からフランジ４．４ａ及び磁石３の材質より
軟質で、かつ、磁気漏洩を防止するために非磁性の材質
とすることが好ましく１本実施例では軟質のアルミニウ
ム合金を使用した。The cylindrical permanent magnet 3 is provided with cutouts 13.13a in the radial direction as shown in FIG. A notch 14 is provided in the clasp 5.5a, and a sixth
Protrusions 15a, 15 in the vertical direction (thickness direction) as shown in the figure.
b is provided. When the magnet 3 is axially clamped between the flange 4.4a and the clasp 5.5a, the protrusion 15a of the clasp 5, 5a engages with the notch 14 of the flange 4.4a, and the protrusion The portion 15b is the cutout portion 1 of the magnet 3
3.13a to prevent the magnet 3 from rotating during rotation. In the example of Figure 6, the clasp 5.5a
Although the protrusions 15a and 15b are arranged at angular positions shifted by 90 degrees, they can be arranged at any position including symmetrical positions in the thickness direction. Further, the material of the clasps 5, 5a is preferably softer than the material of the flange 4.4a and the magnet 3 due to their purpose of use, and is preferably non-magnetic in order to prevent magnetic leakage. Soft aluminum alloy was used.
フランジ４．４ａに設けた円筒部１６．１６ａ（第１図
参照）は組立時においてスリーブ１とヨーク２との間に
一定間隔の中空部８を形成させるための位置決めガイド
として作用する。また、ヨーク２の軸方向長さは、フラ
ンジ４，４ａに加締め結合を行なうための押圧力を加え
たとき、この押圧力によってフランジ４．４ａと磁石３
との間に挟まれた留め金５．５ａが適度な圧縮力を受け
た後はヨーク２の上下端がフランジ４．４ａの鍔部に当
接し、それ以上の圧縮力が留め金５．５ａに発生しない
長さに設定することが望ましく、これによりフェライト
磁石３の破損が防止される。A cylindrical portion 16.16a (see FIG. 1) provided on the flange 4.4a acts as a positioning guide for forming a hollow portion 8 at a constant distance between the sleeve 1 and the yoke 2 during assembly. Further, the axial length of the yoke 2 is such that when a pressing force is applied to the flanges 4, 4a for caulking the joint, the flange 4.4a and the magnet 3 are connected by this pressing force.
After the clasp 5.5a, which is sandwiched between the It is desirable to set the length to a length that does not cause damage to the ferrite magnet 3, thereby preventing damage to the ferrite magnet 3.
フランジ４．４ａには第１図に示した如く、一体にバラ
ンスウェイト部２０．２０ａを設けることもでき、部品
点数の削減と組立性の向上を図ることができる。フラン
ジ４．４ａの加工方法としては、機械加工、鋳造、ダイ
カスト等の任意の方法を用いることができるが、バラン
スウェイト部２０．２０ａを一体に設けるような場合は
形状が複数となるのでダイカスト法によるのが経済的で
ある。補強部材管６は、万一、フェライト磁石３が破損
したとき、破片の飛散防止を図るのがその使用目的であ
り非磁性体の薄肉管を用いる。非磁性体材料を使用する
のは磁気漏洩を防止するためであり、本実施例ではステ
ンレス鋼の薄肉管を圧入固定している。As shown in FIG. 1, the flange 4.4a can be integrally provided with a balance weight portion 20.20a, thereby reducing the number of parts and improving ease of assembly. Any method such as machining, casting, die-casting, etc. can be used to process the flange 4.4a, but if the balance weight part 20.20a is provided in one piece, there will be multiple shapes, so a die-casting method may be used. It is economical to do so. The purpose of the reinforcing member tube 6 is to prevent fragments from scattering in the event that the ferrite magnet 3 is damaged, and a thin walled tube made of a non-magnetic material is used. The purpose of using non-magnetic material is to prevent magnetic leakage, and in this embodiment, a thin stainless steel tube is press-fitted and fixed.
このように本実施例の電動機用回転子は、スリーブとヨ
ークとの間に円筒状の中空部分が形成されるのでこの中
空部分の体積分だけ回転子の重量軽減が図れる。従って
、回転子の速度応答性がよくなると共に軸受部の摩耗を
減少できる。As described above, in the electric motor rotor of this embodiment, since the cylindrical hollow part is formed between the sleeve and the yoke, the weight of the rotor can be reduced by the volume of this hollow part. Therefore, the speed response of the rotor is improved and wear of the bearing portion can be reduced.
第７図ないし第９図は他の実施例を示し、第７図は分割
磁石の斜面図、第８図は第７図の磁石を結合した結合部
の説明図、第９図は第７図の磁石を用いた回転子の横断
面図である０本実施例の上記実施例と異なるところは、
上記実施例は磁石３が一体の円筒状であるのに対し、本
実施例は４分割された分割磁石１７を用いて円筒状に形
成している点である。分割磁石１７には４隅に面取り部
１８を有し組立時には第８図の如く分割磁石１７の合せ
目の面取り部１８．１８間に形成されるＶ字溝１９に留
め金５．５ａの突起部１５ｂを係合させ、一方、フラン
ジ４．４ａの切欠部１４に突起部１５ａを係合させて分
割磁石１７の廻り止めを行なうようになっており、円筒
用磁石と同様に組み立てる。本実施例も上記実施例と同
様の作用効果を有する。7 to 9 show other embodiments, FIG. 7 is an oblique view of the divided magnet, FIG. 8 is an explanatory diagram of a connecting part where the magnets shown in FIG. 7 are combined, and FIG. This embodiment is a cross-sectional view of a rotor using magnets, and the differences from the above embodiment are as follows.
In the above embodiment, the magnet 3 is integrally cylindrical, whereas in this embodiment, the magnet 3 is formed into a cylindrical shape using four divided magnets 17. The divided magnet 17 has chamfered portions 18 at the four corners, and when assembled, the protrusion of the clasp 5.5a is inserted into the V-shaped groove 19 formed between the chamfered portions 18 and 18 at the seams of the divided magnet 17, as shown in FIG. The split magnet 17 is prevented from rotating by engaging the protrusion 15a with the notch 14 of the flange 4.4a, and is assembled in the same manner as the cylindrical magnet. This example also has the same effects as the above example.
以上記述した如く本発明の電動機用回転子は、回転子の
重量軽減ができる効果を有するものである。As described above, the electric motor rotor of the present invention has the effect of reducing the weight of the rotor.
第１図は本発明の電動機用回転子の実施例の縦断面図、
第２図は第１図のＡ−Ａ矢視断面図、第３図は第１図の
スリーブの斜視図、第４図は同じくフランジの斜視図、
第５図は同じく円筒状磁石の斜視図、第６図は同じく留
め金の断面図、第７図は本発明の電動機用回転子の他の
実施例の分割磁石の斜視図、第８図は第７図の磁石を結
合した結合部の説明図、第９図は第７図の磁石を用いた
回転子の横断面図である。
１・・・スリーブ、２・・・ヨーク、３・・・磁石、６
・・・補強部材管、８・・・中空部、１７・・・分割磁
石。
寥１ 口
＄３ 因
６・精゛棺揶、材管
δ、中空部分
′Ｊｌ：５ 図
茎８図
￥、６ 目
ｆ５α
Ｖ、７ の
￥、９ 口
Ｉ７− 会ジ；リス−ｋｌｃＩFIG. 1 is a longitudinal cross-sectional view of an embodiment of a rotor for an electric motor according to the present invention;
2 is a sectional view taken along the line A-A in FIG. 1, FIG. 3 is a perspective view of the sleeve in FIG. 1, and FIG. 4 is a perspective view of the flange.
FIG. 5 is a perspective view of the cylindrical magnet, FIG. 6 is a sectional view of the clasp, FIG. 7 is a perspective view of a divided magnet of another embodiment of the motor rotor of the present invention, and FIG. FIG. 7 is an explanatory view of a coupling portion in which the magnets shown in FIG. 7 are coupled, and FIG. 9 is a cross-sectional view of a rotor using the magnets shown in FIG. 1...Sleeve, 2...Yoke, 3...Magnet, 6
. . . Reinforcing member tube, 8 . . Hollow portion, 17 . . . Division magnet. 1 mouth $3 cause 6, fine coffin, wood pipe δ, hollow part 'Jl: 5 figure stem 8 figure ¥, 6th f5α V, 7 no ¥, 9 mouth I7- meeting; squirrel-klcI
Claims (1)
リーブ外周に円筒状の中空部を形成し配設された筒状の
ヨークと、筒状に形成され該ヨーク外周に嵌合配設され
た永久磁石及び該磁石外周に嵌合固定された補強部材管
とを設けたことを特徴とする電動機用回転子。1. A sleeve fitted and fixed to the rotating shaft of the electric motor, a cylindrical yoke formed in a cylindrical hollow part on the outer periphery of the sleeve, and a cylindrical yoke formed in a cylindrical shape and fitted on the outer periphery of the yoke. 1. A rotor for an electric motor, comprising a permanent magnet and a reinforcing member tube fitted and fixed to the outer periphery of the magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62031444A JPS63202249A (en) | 1987-02-16 | 1987-02-16 | Rotor for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62031444A JPS63202249A (en) | 1987-02-16 | 1987-02-16 | Rotor for motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63202249A true JPS63202249A (en) | 1988-08-22 |
Family
ID=12331417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62031444A Pending JPS63202249A (en) | 1987-02-16 | 1987-02-16 | Rotor for motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63202249A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006333627A (en) * | 2005-05-26 | 2006-12-07 | Hitachi Ltd | Self-starting synchronous motor and its manufacturing method, and compressor |
-
1987
- 1987-02-16 JP JP62031444A patent/JPS63202249A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006333627A (en) * | 2005-05-26 | 2006-12-07 | Hitachi Ltd | Self-starting synchronous motor and its manufacturing method, and compressor |
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