JPS6380744A - Permanent magnet rotor - Google Patents
Permanent magnet rotorInfo
- Publication number
- JPS6380744A JPS6380744A JP61224378A JP22437886A JPS6380744A JP S6380744 A JPS6380744 A JP S6380744A JP 61224378 A JP61224378 A JP 61224378A JP 22437886 A JP22437886 A JP 22437886A JP S6380744 A JPS6380744 A JP S6380744A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- yoke
- casing
- deformable member
- 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
- 238000004512 die casting Methods 0.000 claims abstract description 18
- 238000000465 moulding Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052725 zinc Inorganic materials 0.000 abstract description 4
- 239000011701 zinc Substances 0.000 abstract description 4
- 239000012768 molten material Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 238000005266 casting Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
この発明は、例えば密閉形電動圧縮機の同期電動機など
に用いられる永久磁石回転子に関するものである。The present invention relates to a permanent magnet rotor used, for example, in a synchronous motor of a hermetic electric compressor.
第８図は例えば特開昭５８−１５１８５５号公報に示さ
れた従来の永久磁石回転子の縦断面図、第９図は同横断
面図、第１０図は第９図の部分拡大図である。第８図乃
至第１０図において、１は回転軸（図示しない）が内周
に嵌挿固定される円筒状のヨーク、２はヨーク１の外周
側に配置され、円周方向に分割された複数の磁石片２ａ
からなる永久磁石、３はヨーク１および永久磁石２の外
周側に嵌合された円筒状ケーシング、４はエンドリング
、５はヨーク１に設けられたダイキャスト材の溶湯通し
孔である。
この永久磁石回転子では、ヨーク１は環状の電磁鋼板を
多数積層して構成され、フェライトなどからなる永久磁
石２の内径側磁路としての機能を果たす。エンドリング
４は、アルミニウム、亜鉛などのダイキャストによって
形成され、回転子の軸方向両端部に位置し、両端部のエ
ンドリング４がヨーク１に設けた通し孔５中のダイキャ
スト材によって連結され、ヨーク１を構成する積Ｎ鋼板
を固定する役割を持つと共に、永久磁石２の軸方向ずれ
を防止する機能を有している。さらに、円筒状ケーシン
グ３は、永久磁石２が回転子使用時に遠心力によって飛
散するのを防止する機能を持っている。
従来の永久磁石回転子を製造するには、まず、溶湯通し
孔５を有する回転子鉄板を図示しない固定子と同じ電磁
鋼板の内周側部分を打ち抜いて積層し、ヨーク１を構成
する。次に、円筒状ケーシング３の内周に永久磁石２を
接着剤によって固着し、その後、永久磁石２の内周に上
記ヨーク１を挿入し、通常、篭形誘導電動機の製造に用
いられるダイキャスト法によって、回転子を構成する。
この場合に、上記ケーシング３と永久磁石２の間に導電
性材料のアルミニウムや亜鉛が侵入すると、電動機の運
転時に渦電流損などが発生し、効率が低下する。これを
防止するために、上記のように、ダイキャスト前に永久
磁石２をケーシング３内周に装着するなどして、永久磁
石２内径部とヨーク１の間に積極的にダイキャスト材を
流し込み、その溶湯の圧力によって永久磁石２をケーシ
ング３側に押付けることが行われている。FIG. 8 is a vertical sectional view of a conventional permanent magnet rotor disclosed in, for example, Japanese Patent Application Laid-Open No. 58-151855, FIG. 9 is a cross-sectional view of the same, and FIG. 10 is a partially enlarged view of FIG. 9. . 8 to 10, 1 is a cylindrical yoke into which a rotating shaft (not shown) is fitted and fixed, and 2 is a plurality of cylindrical yokes arranged on the outer periphery of the yoke 1 and divided in the circumferential direction. magnet piece 2a
3 is a cylindrical casing fitted to the outer circumferential sides of the yoke 1 and the permanent magnet 2; 4 is an end ring; and 5 is a die-casting hole provided in the yoke 1. In this permanent magnet rotor, a yoke 1 is constructed by laminating a large number of annular electromagnetic steel plates, and functions as an inner magnetic path for a permanent magnet 2 made of ferrite or the like. The end rings 4 are formed by die casting of aluminum, zinc, etc., and are located at both ends of the rotor in the axial direction, and the end rings 4 at both ends are connected by a die cast material in a through hole 5 provided in the yoke 1. , has the role of fixing the N steel plate that constitutes the yoke 1, and also has the function of preventing the permanent magnet 2 from shifting in the axial direction. Furthermore, the cylindrical casing 3 has a function of preventing the permanent magnets 2 from scattering due to centrifugal force when the rotor is used. To manufacture a conventional permanent magnet rotor, first, a rotor iron plate having molten metal through holes 5 is punched out from the inner peripheral side of the same electromagnetic steel plate as a stator (not shown) and laminated to form the yoke 1. Next, the permanent magnet 2 is fixed to the inner periphery of the cylindrical casing 3 with adhesive, and then the yoke 1 is inserted into the inner periphery of the permanent magnet 2. The rotor is constructed by the method. In this case, if the conductive material such as aluminum or zinc enters between the casing 3 and the permanent magnet 2, eddy current loss etc. will occur during operation of the motor, reducing efficiency. In order to prevent this, as mentioned above, the permanent magnet 2 is attached to the inner circumference of the casing 3 before die casting, and the die casting material is actively poured between the inner diameter part of the permanent magnet 2 and the yoke 1. The permanent magnet 2 is pressed against the casing 3 by the pressure of the molten metal.
従来の永久磁石回転子は、以上のように構成され、ダイ
キャスト前に、ダイキャスト材の溶湯が永久磁石の外周
部に入り込まないようにするため、ケーシング内周に永
久磁石を接着剤などで接着し、その後グイキャストを行
わなければならず、製造工程に接着剤の塗布、永久磁石
の固定のような煩雑な前組立作業を必要とし、高価にな
るという問題点があった。
この発明は、上記のような問題点を解決するためになさ
れたもので、ダイキャスト前の組立作業を簡略化するこ
とによって、安価に永久磁石回転子を提供することを目
的としている。Conventional permanent magnet rotors are constructed as described above. Before die casting, permanent magnets are attached to the inner circumference of the casing with adhesive to prevent the molten metal of the die casting material from entering the outer circumference of the permanent magnets. It is necessary to adhere the product and then perform a cast process, and the manufacturing process requires complicated pre-assembly work such as applying adhesive and fixing the permanent magnet, resulting in an increase in cost. This invention was made to solve the above-mentioned problems, and aims to provide a permanent magnet rotor at low cost by simplifying the assembly work before die casting.
この発明に係る永久磁石回転子は、ヨークと永久磁石の
間に、円筒状ケーシングの嵌合によって弾性変形する部
分または部材を設けたものである。A permanent magnet rotor according to the present invention is provided with a portion or member that is elastically deformed by fitting a cylindrical casing between a yoke and a permanent magnet.
この考案における永久磁石回転子は、円筒状ケーシング
を永久磁石の外周に嵌合させることで、ヨークと永久磁
石の間に設けた部分または部材が弾性変形し、ヨーク永
久磁石および上記ケーシングが固着し、ケーシングの内
周に永久磁石の外周が上記部分または部材の弾性復元力
によって圧着し、ケーシングと永久磁石を接着剤で接着
しなくても、これらの間にグイキャスト時にダイキャス
ト材の溶湯が進入することを防止でき、ダイキャスト前
の組立作業を簡略化できる。In the permanent magnet rotor of this invention, by fitting the cylindrical casing to the outer periphery of the permanent magnet, the part or member provided between the yoke and the permanent magnet is elastically deformed, and the yoke permanent magnet and the casing are fixed together. The outer periphery of the permanent magnet is pressed against the inner periphery of the casing by the elastic restoring force of the above-mentioned part or member, and even if the casing and permanent magnet are not bonded with adhesive, the molten metal of the die-casting material will not leak between them during casting. It is possible to prevent this from entering and simplify the assembly work before die-casting.
以下、この発明の実施例を図について説明する。
第１図は一実施例による永久磁石回転子の横断面図、第
２図は第１図の部分拡大図である。
第１図、第２図において、第８図乃至第１０図と同一符
号は同一または相当部分を示し、６はヨーク１の外周と
永久磁石２の内周の間に設けた弾性変形する部分であり
、ヨーク１の円周方向の複数個所に、上記円周方向に長
軸が位置するほぼ楕円形の空間部６ｂを介して円弧状に
径方向外側に突出する凸部６ａを形成したものである。
そして、永久磁石２の分割された磁石片１個に対しそれ
ぞれ複数の凸部６ａが、円筒状ケーシング３をヨーク１
と永久磁石２を組付けたものに被嵌させることにより、
弾性変形して永久磁石２の内周に圧着される。
この実施例の永久磁石回転子を製造するには、ヨーク１
の凸部６ａに内周が接するように永久磁石２を配置し、
その後、円筒状ケーシング３を圧入または焼嵌めによっ
て永久磁石２の外周に嵌める。これによって、ヨークエ
の凸部６ａはこれらの径方向内側に位置する空間部６ｂ
を圧縮して弾性変形し、ヨーク１、永久磁石２および上
記ケーシング３を一体に固着させる。なお、空間部６ｂ
は凸部６ａの弾性変形を容易にするためにヨーク１の円
周方向に長軸を有するほぼ楕円形に形成しである。上記
のようにして、ヨーク１、永久磁石２およびケーシング
３が一体に固着された後、従来例と同様にアルミニウム
、亜鉛などのダイキャストによって回転子が構成される
。この場合に、ヨーク１の外周に設けた凸部６ａの弾性
復元力によって永久磁石２の外周とケーシング３の内周
とが圧着されているので、ダイキャスト材の溶湯が永久
磁石２とケーシング３の間に入り込まず、ヨークｌの空
間部６ｂ、溶湯通し孔５内に入り込んで、回転子が構成
される。
以上説明したように、一実施例では、円筒状ケーシング
３の嵌合によってヨーク１外周部に設けられた凸部６ａ
の弾性変形により、ヨーク１、永久磁石２およびケーシ
ング３をグイキャスト前に固着することができ、永久磁
石とケーシングを固着するための接着剤が不要となり、
また、グイキャスト時に、ヨークｌと永久磁石２が接触
状態にあるので、従来のものに比べ、ヨークと永久磁石
の同軸性を向上させることができ、電動機の固定子と回
転子の空隙の不拘による半径方向磁気吸引力の増大に伴
う信軌性の低下を防止することができる。
第３図は他の実施例による永久磁石回転子の縦断面図、
第４図は同横断面図、第５図は第４図の部分拡大図であ
る。
第３図乃至第５図において、第８図乃至第１０図と同一
符号は同一または相当部分を示し、７はヨーク１の外周
と永久磁石２の内周の間に挿入された弾性変形する部材
、すなわち可変形部材であり、この部材７は、薄鋼板の
ような磁性材料の帯状体から構成され、板厚方向に凸部
７ａが形成され、ヨークｌの外周部を囲むようにヨーク
１と永久磁石２の間に配置されている。また、可変形部
材７はケーシング３内に組込んだ際に、凸部７ａが永久
磁石２の分割された磁石片２ａにそれぞれ弾性変形して
圧接され、軸方向と直角な任意断面において、ヨーク１
と可変形部材７で囲まれる部分の面積Ａ＋ と、永久磁
石２と可変形部材７でて囲まれる部分の面積Ａｘの関係
が、Ａ ＋ ＞ Ａ ｚになるように形成、組立されて
いる。
この実施例の永久磁石回転子を製造するには、まず、従
来例と同様に図示しない固定子と同じ電磁鋼板の内周側
部分を打ち抜いて積層し、ヨークｌを構成する０次に、
ヨーク１の外周に帯状体からなる上記可変形部材７を巻
付け、この部材７の外周に永久磁石２のほぼ弓形横断面
の磁石片２ａを押し付け、永久磁石２の外径寸法を円筒
状ケーシング３の内径寸法より小径に弾性変形させてお
き、この状態でケーシング３内にヨーク１、可変形部材
７および永久磁石２を収納する。この際、可変形部材７
は外周側から永久磁石２を介して力を加え、弾性変形ま
たは弾塑性変形させた状態でケーシング３内に収納し、
その後、上記力を解除し、ケーシング３の内径寸法に永
久磁石２の外径寸法がなるまで、可変形部材７の変形を
戻す。さらに、永久磁石２の外周を可変形部材７の弾性
復元力でケーシング３の内周に押し付けた状態で、次工
程のダイキャストを行う、ダイキャストによって、永久
磁石２の内周側では、可変形部材の面積Ａ＋の部分に面
積Ａ！の部分よりも優先的にダイキャスト材の溶湯が流
れ込み、この溶湯の圧力で永久磁石２がさらに大きな力
でケーシング３の内周に押し付けられてダイキャスト成
形される。
また、上述のように、予め永久磁石２がケーシング３の
内周に押し付けられているので、永久磁石２とケーシン
グ３の間には溶湯が流れ込みにくい。
以上説明したように、他の実施例では、可変形部材７の
弾性変形により、一実施例のものと同様に、永久磁石２
とケーシング３とを接着剤なしにグイキャスト前に固着
でき、また磁性体からなる可変形部材７を用いたので、
永久磁石２とヨーク１の間の磁路が形成されやすくなり
、電動機の効率が向上する。
なお、上記実施例では、可変形部材７を帯状体としたが
、この発明は第６図に示すように、線状体からなる可変
形部材７をヨーク１の外周に巻付けてもよく、また、第
７図に示すように外周に弾性変形する凸部７ａを軸方向
に沿って設けた筒状の可変形部材７をヨークの外周に嵌
めてもよい。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a permanent magnet rotor according to one embodiment, and FIG. 2 is a partially enlarged view of FIG. 1. 1 and 2, the same reference numerals as in FIGS. 8 to 10 indicate the same or corresponding parts, and 6 is an elastically deformable part provided between the outer periphery of the yoke 1 and the inner periphery of the permanent magnet 2. A convex portion 6a is formed at a plurality of locations in the circumferential direction of the yoke 1 to protrude outward in the radial direction in an arc shape through a substantially elliptical space portion 6b whose long axis is located in the circumferential direction. be. A plurality of protrusions 6a for each divided magnet piece of the permanent magnet 2 connect the cylindrical casing 3 to the yoke 1.
By fitting it into the assembled permanent magnet 2,
It is elastically deformed and pressed onto the inner periphery of the permanent magnet 2. To manufacture the permanent magnet rotor of this example, the yoke 1
The permanent magnet 2 is arranged so that the inner circumference is in contact with the convex part 6a,
Thereafter, the cylindrical casing 3 is fitted onto the outer periphery of the permanent magnet 2 by press fitting or shrink fitting. As a result, the convex portion 6a of the yoke is located inside the space 6b in the radial direction.
is compressed and elastically deformed, and the yoke 1, permanent magnet 2, and the casing 3 are fixed together. In addition, the space part 6b
In order to facilitate elastic deformation of the convex portion 6a, the convex portion 6a is formed into a substantially elliptical shape having a long axis in the circumferential direction of the yoke 1. After the yoke 1, permanent magnet 2, and casing 3 are fixed together as described above, the rotor is constructed by die-casting of aluminum, zinc, or the like, as in the conventional example. In this case, the outer periphery of the permanent magnet 2 and the inner periphery of the casing 3 are pressed together by the elastic restoring force of the convex portion 6a provided on the outer periphery of the yoke 1, so that the molten metal of the die-casting material flows between the permanent magnet 2 and the casing 3. The rotor is formed by entering the space 6b of the yoke l and the melt through hole 5 without entering between them. As explained above, in one embodiment, the convex portion 6a provided on the outer circumference of the yoke 1 by fitting the cylindrical casing 3
Due to the elastic deformation of , the yoke 1, permanent magnet 2, and casing 3 can be fixed together before casting, eliminating the need for adhesive to fix the permanent magnet and casing.
In addition, since the yoke l and the permanent magnet 2 are in contact when casting, the coaxiality of the yoke and the permanent magnet can be improved compared to conventional ones, and the air gap between the stator and rotor of the electric motor can be maintained. It is possible to prevent a decrease in reliability due to an increase in radial magnetic attraction force due to the increase in radial magnetic attraction force. FIG. 3 is a longitudinal sectional view of a permanent magnet rotor according to another embodiment,
FIG. 4 is a cross-sectional view of the same, and FIG. 5 is a partially enlarged view of FIG. 4. 3 to 5, the same reference numerals as in FIGS. 8 to 10 indicate the same or corresponding parts, and 7 is an elastically deformable member inserted between the outer periphery of the yoke 1 and the inner periphery of the permanent magnet 2. That is, it is a deformable member, and this member 7 is made of a strip of magnetic material such as a thin steel plate, and has a convex portion 7a formed in the thickness direction, and is connected to the yoke 1 so as to surround the outer circumference of the yoke l. It is arranged between the permanent magnets 2. When the deformable member 7 is assembled into the casing 3, the convex portions 7a are elastically deformed and pressed into contact with the divided magnet pieces 2a of the permanent magnet 2, so that the yoke 1
The magnet is formed and assembled so that the relationship between the area A+ of the portion surrounded by the permanent magnet 2 and the deformable member 7, and the area Ax of the portion surrounded by the permanent magnet 2 and the deformable member 7 is such that A+>Az. In order to manufacture the permanent magnet rotor of this embodiment, first, as in the conventional example, the inner peripheral side portions of the same electromagnetic steel plates as the stator (not shown) are punched and laminated, and the
The variable shape member 7 made of a band-shaped body is wound around the outer periphery of the yoke 1, and the magnet piece 2a of the permanent magnet 2 having a substantially arcuate cross section is pressed onto the outer periphery of the member 7, so that the outer diameter of the permanent magnet 2 is adjusted to a cylindrical casing. The yoke 1, the deformable member 7, and the permanent magnet 2 are stored in the casing 3 in this state. At this time, the deformable member 7
is housed in the casing 3 in an elastically or elastoplastically deformed state by applying force from the outer circumferential side via the permanent magnet 2,
Thereafter, the force is released, and the deformation of the deformable member 7 is restored until the inner diameter of the casing 3 equals the outer diameter of the permanent magnet 2. Furthermore, with the outer circumference of the permanent magnet 2 pressed against the inner circumference of the casing 3 by the elastic restoring force of the deformable member 7, die casting is performed in the next step. Area A in the area A+ of the deformable member! The molten metal of the die-casting material flows in preferentially over the part, and the pressure of this molten metal presses the permanent magnet 2 against the inner periphery of the casing 3 with even greater force, thereby forming the part by die-casting. Further, as described above, since the permanent magnet 2 is pressed against the inner circumference of the casing 3 in advance, molten metal is difficult to flow between the permanent magnet 2 and the casing 3. As explained above, in the other embodiments, the permanent magnet 2
and the casing 3 can be fixed together without adhesive before casting, and since the deformable member 7 made of magnetic material is used,
A magnetic path between the permanent magnet 2 and the yoke 1 is easily formed, and the efficiency of the motor is improved. In the above embodiment, the deformable member 7 is a band-shaped member, but in the present invention, as shown in FIG. Further, as shown in FIG. 7, a cylindrical deformable member 7 having an elastically deformable convex portion 7a provided along the axial direction on the outer periphery may be fitted onto the outer periphery of the yoke.
以上説明したように、この発明によれば、ヨークと永久
磁石との間に設けた弾性変形する部分または部材を円筒
状ケーシングの嵌合によって弾性変形させて、グイキャ
スト前に永久磁石をケーシングに圧着させるようにした
ので、接着剤を用いることなく、ヨーク、永久磁石およ
びケーシングを固着でき、グイキャスト時にダイキャス
ト材の溶湯が永久磁石とケーシングの間に進入すること
を防止でき、グイキャスト前の組立作業を簡略化でき、
安価に永久磁石回転子を提供できるという効果がある。As explained above, according to the present invention, the elastically deformable portion or member provided between the yoke and the permanent magnet is elastically deformed by fitting the cylindrical casing, and the permanent magnet is attached to the casing before casting. Because they are crimped, the yoke, permanent magnet, and casing can be fixed without using adhesives, and the molten die-casting material can be prevented from entering between the permanent magnet and the casing during gui-casting. The assembly work can be simplified,
This has the effect of being able to provide a permanent magnet rotor at a low cost.
第１図はこの発明の一実施例による永久磁石回転子を示
す横断面図、第２図は第１図の部分拡大図、第３図はこ
の発明の他の実施例による永久磁石回転子を示す縦断面
図、第４図は第３図の■−■線に沿う横断面図、第５図
は第４図の部分拡大図、第６図はこの発明による可変形
部材の変形例をヨークおよび永久磁石と共に示す一部分
解斜視図、第７図は可変形部材の他の変形例を示す斜視
図、第８図は従来の永久磁石回転子を示す縦断面図、第
９図は同横断面図、第１０図は第９図の部分拡大図であ
る。
１・・・ヨーク、２・・・永久磁石、２ａ・・・磁石片
、３・・・円筒状ケーシング、６・・・弾性変形する部
分、６ａ・・・凸部、６ｂ・・・空間部、７・・・可変
形部材、７ａ・・・凸部。
なお、図中同一符号は同−又は相当部分を示す。
代理人 大君 増ｍ（ほか ２名）
第１図
第２図
第３図
第６図
第７図
ｑ）1 is a cross-sectional view showing a permanent magnet rotor according to an embodiment of the present invention, FIG. 2 is a partially enlarged view of FIG. 1, and FIG. 3 is a cross-sectional view showing a permanent magnet rotor according to another embodiment of the invention. FIG. 4 is a cross-sectional view taken along the line ■-■ in FIG. 3, FIG. 5 is a partially enlarged view of FIG. 4, and FIG. FIG. 7 is a perspective view showing another modified example of the deformable member, FIG. 8 is a vertical cross-sectional view showing a conventional permanent magnet rotor, and FIG. 9 is a cross-sectional view of the same. 10 are partially enlarged views of FIG. 9. DESCRIPTION OF SYMBOLS 1... Yoke, 2... Permanent magnet, 2a... Magnet piece, 3... Cylindrical casing, 6... Elastically deformable part, 6a... Convex part, 6b... Space part , 7... Deformable member, 7a... Convex portion. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Masum Ookimi (and 2 others) Figure 1 Figure 2 Figure 3 Figure 6 Figure 7 q)
Claims (9)
割して配置した永久磁石とに、円筒状ケーシングを被嵌
し、上記ヨーク、永久磁石およびケーシングをダイキャ
ストによって固着する永久磁石回転子において、ヨーク
と永久磁石との間に、上記ケーシングの嵌合によって弾
性変形する部分又は部材を設けたことを特徴とする永久
磁石回転子。(1) A permanent magnet in which a cylindrical casing is fitted onto a yoke and a permanent magnet arranged circumferentially in plural parts on the outer circumferential side of the yoke, and the yoke, permanent magnet, and casing are fixed by die-casting. A permanent magnet rotor, characterized in that the rotor includes a portion or member that is elastically deformed by fitting the casing between the yoke and the permanent magnet.
複数個所に空間部を介して回転子径方向外側に突出させ
た凸部材である特許請求の範囲第１項記載の永久磁石回
転子。(2) Permanent magnet rotation according to claim 1, wherein the elastically deformable portion is a convex member that protrudes outward in the rotor radial direction through a space at a plurality of locations in the circumferential direction of the outer periphery of the yoke. Child.
置するほぼ楕円形である特許請求の範囲第２項記載の永
久磁石回転子。(3) The permanent magnet rotor according to claim 2, wherein the space has a substantially elliptical planar shape with its long axis located in the circumferential direction of the yoke.
内周の間に介挿したヨークおよび永久磁石と別の弾性体
からなる可変形部材である特許請求の範囲第１項記載の
永久磁石介挿。(4) The permanent member according to claim 1, wherein the elastically deformable member is a deformable member consisting of a yoke and a permanent magnet inserted between the outer periphery of the yoke and the inner periphery of the permanent magnet, and another elastic body. Insert magnet.
の凸部を形成した円周方向に連続するものである特許請
求の範囲第４項記載の永久磁石回転子。(5) The permanent magnet rotor according to claim 4, wherein the deformable member is continuous in the circumferential direction and has a plurality of convex portions that protrude outward in the radial direction of the rotor.
状体を成形、組立してなる特許請求の範囲第４項記載の
永久磁石回転子。(6) The permanent magnet rotor according to claim 4, wherein the deformable member is formed by molding and assembling a band-shaped body having a plurality of convex portions in the thickness direction.
線状体である特許請求の範囲第４項記載の永久磁石回転
子。(7) The permanent magnet rotor according to claim 4, wherein the deformable member is a linear body that is assembled and wound around the outer periphery of the yoke.
同数だけ突出させ、上記凸部を永久磁石の内周に圧接さ
せてなる特許請求の範囲第４項記載の永久磁石回転子。(8) A rotating permanent magnet according to claim 4, wherein the deformable member has convex portions protruding from the outer periphery in the same number as the number of divisions of the permanent magnet, and the convex portions are brought into pressure contact with the inner periphery of the permanent magnet. Child.
シング内に嵌めた際の軸方向と直角な任意断面において
可変形部材の凸部によって区切られて生ずる部分の面積
に関し、ヨークの外周と可変形部材によって囲まれる部
分の断面積Ａ＿１と、永久磁石の内周と可変形部材によ
って囲まれる部分の断面積Ａ＿２とが、Ａ＿１＞Ａ＿２
になるようにしてある特許請求の範囲第４項記載の永久
磁石回転子。(9) When the deformable member is fitted into the casing together with the yoke and the permanent magnet, the area of the portion separated by the convex portion of the deformable member in an arbitrary cross section perpendicular to the axial direction is determined by the outer circumference of the yoke and the deformable shape. The cross-sectional area A_1 of the part surrounded by the member and the cross-sectional area A_2 of the part surrounded by the inner periphery of the permanent magnet and the deformable member are A_1>A_2.
A permanent magnet rotor according to claim 4, wherein the permanent magnet rotor has the following characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61224378A JPS6380744A (en) | 1986-09-22 | 1986-09-22 | Permanent magnet rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61224378A JPS6380744A (en) | 1986-09-22 | 1986-09-22 | Permanent magnet rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6380744A true JPS6380744A (en) | 1988-04-11 |
Family
ID=16812816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61224378A Pending JPS6380744A (en) | 1986-09-22 | 1986-09-22 | Permanent magnet rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6380744A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5258678A (en) * | 1991-07-05 | 1993-11-02 | Kabushiki Kaisha Toshiba | Rotator element for electric motor |
| WO1997013311A1 (en) * | 1995-10-04 | 1997-04-10 | Empresa Brasileira De Compressores | A rotor with permanent magnets for an electric motor |
| CN1038170C (en) * | 1992-09-02 | 1998-04-22 | 东芝株式会社 | Rotator of permanent ferromagnet |
| WO1999038242A1 (en) * | 1998-01-20 | 1999-07-29 | Zanussi Elettromeccanica S.P.A. | Rotor for an electronically commutated motor and improved method for the mass production thereof |
| KR101245135B1 (en) * | 2006-07-10 | 2013-03-19 | 삼성전자주식회사 | A rotor for compressor |
| CN108599422A (en) * | 2018-07-16 | 2018-09-28 | 珠海凌达压缩机有限公司 | Rotor core structure and compressor |
| FR3080719A1 (en) * | 2018-04-26 | 2019-11-01 | Valeo Equipements Electriques Moteur | ROTOR OF ELECTRIC ROTATING MACHINE WITH PERMANENT SURFACE MAGNETS |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5181908A (en) * | 1975-01-14 | 1976-07-17 | Citizen Watch Co Ltd | |
| JPS5797354A (en) * | 1980-12-08 | 1982-06-17 | Hitachi Ltd | Magnet rotor |
| JPS58151855A (en) * | 1982-03-05 | 1983-09-09 | Hitachi Ltd | Manufacture of permanent magnet rotor |
-
1986
- 1986-09-22 JP JP61224378A patent/JPS6380744A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5181908A (en) * | 1975-01-14 | 1976-07-17 | Citizen Watch Co Ltd | |
| JPS5797354A (en) * | 1980-12-08 | 1982-06-17 | Hitachi Ltd | Magnet rotor |
| JPS58151855A (en) * | 1982-03-05 | 1983-09-09 | Hitachi Ltd | Manufacture of permanent magnet rotor |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5258678A (en) * | 1991-07-05 | 1993-11-02 | Kabushiki Kaisha Toshiba | Rotator element for electric motor |
| CN1038170C (en) * | 1992-09-02 | 1998-04-22 | 东芝株式会社 | Rotator of permanent ferromagnet |
| WO1997013311A1 (en) * | 1995-10-04 | 1997-04-10 | Empresa Brasileira De Compressores | A rotor with permanent magnets for an electric motor |
| US5939809A (en) * | 1995-10-04 | 1999-08-17 | Empresa Brasileira De Compressores S/A Embraco | Rotor with permanent magnets for an electric motor |
| WO1999038242A1 (en) * | 1998-01-20 | 1999-07-29 | Zanussi Elettromeccanica S.P.A. | Rotor for an electronically commutated motor and improved method for the mass production thereof |
| KR101245135B1 (en) * | 2006-07-10 | 2013-03-19 | 삼성전자주식회사 | A rotor for compressor |
| FR3080719A1 (en) * | 2018-04-26 | 2019-11-01 | Valeo Equipements Electriques Moteur | ROTOR OF ELECTRIC ROTATING MACHINE WITH PERMANENT SURFACE MAGNETS |
| CN108599422A (en) * | 2018-07-16 | 2018-09-28 | 珠海凌达压缩机有限公司 | Rotor core structure and compressor |
| CN108599422B (en) * | 2018-07-16 | 2020-04-10 | 珠海凌达压缩机有限公司 | Rotor core structure and compressor |
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