JPH02303337A - Permanent magnet type rotor - Google Patents
Permanent magnet type rotorInfo
- Publication number
- JPH02303337A JPH02303337A JP1125328A JP12532889A JPH02303337A JP H02303337 A JPH02303337 A JP H02303337A JP 1125328 A JP1125328 A JP 1125328A JP 12532889 A JP12532889 A JP 12532889A JP H02303337 A JPH02303337 A JP H02303337A
- Authority
- JP
- Japan
- Prior art keywords
- end plate
- protective end
- sections
- rotor
- permanent magnet
- 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.)
- Granted
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910052742 iron Inorganic materials 0.000 claims abstract description 23
- 238000004512 die casting Methods 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 abstract description 43
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 229910052725 zinc Inorganic materials 0.000 abstract description 8
- 239000011701 zinc Substances 0.000 abstract description 8
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 239000003507 refrigerant Substances 0.000 description 7
- 230000037431 insertion Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Compressor (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は電動機の回転子に関し、特に密閉型電動圧縮機
等に好適な永久磁石型回転子に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rotor for an electric motor, and particularly to a permanent magnet rotor suitable for a hermetic electric compressor or the like.
密閉型電動圧縮機に使用される永久磁石型回転子は、冷
媒中への異物の混入や抽出がなく、且つ耐遠心力に優れ
た構造が要求されるため、一般に永久磁石の外周部を筒
状の保護管によって、また軸方向両端部を円板状の保護
端板によってそれぞれ覆って構成される。Permanent magnet rotors used in hermetic electric compressors are required to have a structure that prevents foreign matter from entering or being extracted into the refrigerant and has excellent centrifugal force resistance. It is constituted by a protective tube having a shape of a shape, and both ends in the axial direction are covered by a protective end plate having a disc shape.
上記保護端板の形成及び取り付けに関しては、特開昭５
゛８−１５１８５５号公報に開示されるように、回転子
全体をダイキャストにより鋳ぐるみすることによって形
成する構造と、実開昭５９−１６７４５９号公報に開示
されるように、ダイキャスト等により別途形成したもの
をカシメビンによって固定する構造とに大別される。Regarding the formation and attachment of the above-mentioned protective end plate,
As disclosed in Japanese Utility Model Application Publication No. 8-151855, there is a structure in which the entire rotor is formed by die casting, and as disclosed in Japanese Utility Model Application Publication No. 59-167459, there is a structure in which the entire rotor is formed by die casting, etc. It is roughly divided into two types: a structure in which the formed part is fixed with a rivet.
後者の構造は、電動機特性に優れる反面、かしめ構造に
起因するコスト面並びに品質面での問題が存在したが、
本出願人が先に出願した特願昭６３−１９６３６６号に
示す構造の採用により、これら問題点の改善がなされた
。この構造は、鉄板を鋳ぐるみして保護端板を形成し、
前記鉄板上でカシメビンをかしめて構成するものであり
、これにより、かしめ時の荷重やかしめ後の応力を鉄材
に負担させｔ、ダイキャスト材よりなる保護端板本体に
はかしめによる荷重や応力が加わらないように構成する
ものである。Although the latter structure has excellent motor characteristics, there were problems in terms of cost and quality due to the caulking structure.
These problems have been improved by adopting the structure shown in Japanese Patent Application No. 196366/1983, which was previously filed by the present applicant. This structure is made by casting iron plates to form protective end plates.
This is constructed by caulking the caulking pin on the iron plate, so that the iron material bears the load during caulking and the stress after caulking, and the load and stress due to caulking is not applied to the protective end plate body made of die-cast material. It is configured so that it does not participate.
一般に密閉型電動圧縮機に使用される回転子の場合、圧
縮機構部により生じる動アンバランスを矯正するための
バランスウェイトを軸方向両端部に具備させるため、永
久磁石型回転子の場合は、保護端板上にバランスウェイ
トを一体形成している。このバランスウェイトは回転子
両端の保護端板上から回転子外方へ突出して設けである
ため、突出したバランスウェイトが圧縮機の密閉容器内
において冷媒をかく拌し、このかく拌による冷媒流によ
って密閉容器底部に貯溜された潤滑油の油面もかく拌さ
れ、騒音が発生したり電気的損失が増加する欠点が存在
する。また上記かく拌によって多量の潤滑油が霧状とな
って冷媒に含有されるため、潤滑油の吐出量が増加して
、圧縮機構部の潤滑油が枯渇してしまう問題も発生する
。Generally, the rotor used in a hermetic electric compressor is equipped with balance weights at both axial ends to correct the dynamic imbalance caused by the compression mechanism. A balance weight is integrally formed on the end plate. This balance weight is provided to protrude outward from the rotor from the protective end plates at both ends of the rotor, so the protruding balance weight stirs the refrigerant in the closed container of the compressor, and the refrigerant flow caused by this agitation causes the refrigerant to flow. The surface of the lubricating oil stored at the bottom of the closed container is also agitated, which has the disadvantage of generating noise and increasing electrical loss. Furthermore, because a large amount of lubricating oil is atomized and contained in the refrigerant due to the above-mentioned stirring, the amount of lubricating oil discharged increases, resulting in the problem that the lubricating oil in the compression mechanism becomes depleted.
またバランスウェイトと一体形成される保護端板の材質
としては、高比重で且つダイキャスト形成が容易なこと
から亜鉛材が使用される。しかしながら一般に亜鉛材は
熱に弱く、回転子が組み込まれる圧縮機の密閉容器内の
高温状態と、高速回転による遠心力とによって、バラン
スウェイト部分が塑性流動（クリープ）を起こして、固
定子と接触する危険が存在する。従ってバランスウェイ
ト量が大きなものや、バランスウェイトの保護端板から
の突出寸法が大きなものは、品質上の問題から製作に限
界があった。Further, as the material of the protective end plate integrally formed with the balance weight, zinc material is used because it has a high specific gravity and is easy to die-cast. However, zinc materials are generally weak against heat, and due to the high temperature inside the closed container of the compressor in which the rotor is installed and the centrifugal force caused by high-speed rotation, the balance weight part causes plastic flow (creep) and comes into contact with the stator. There is a risk of Therefore, there is a limit to the production of products with a large amount of balance weight or products with a large protrusion of the balance weight from the protective end plate due to quality problems.
そしてこれら諸問題は、圧縮機の高速回転指向に伴い、
特に深刻な問題となってきている。These problems arise as compressors tend to rotate at higher speeds.
This has become a particularly serious problem.
本発明は、予めダイキャスト形成した円板体をヨーク端
部に装着して保護端板とする永久磁石型回転子において
、前記円板体は複数の透孔を有する鉄板を鋳ぐるみする
ことにより形成され、その鋳ぐるみに際しては、前記透
孔の少なくとも２個を連結して前記鉄板の片側に突出す
る脚部を複数形成すると共に、前記各脚部のうちの１個
乃至局部的な数個の突出長を池と相違させて形成するも
のである。The present invention provides a permanent magnet rotor in which a disc body formed by die-casting in advance is attached to an end of a yoke to serve as a protective end plate, and the disc body is formed by casting an iron plate having a plurality of through holes. When molded, at least two of the through holes are connected to form a plurality of legs protruding from one side of the iron plate, and one or several of the legs are locally connected. The length of the protrusion is different from that of the pond.
上記構成の保護端板は、突出した各脚部をヨークに設け
た中空部に挿入して、ヨーク端部に装着する。The protective end plate having the above structure is attached to the end of the yoke by inserting each of the protruding legs into a hollow portion provided in the yoke.
保護端板から突出する脚部の突出長の相違により、回転
子にアンバランス重量が具備される。Due to the different lengths of the legs projecting from the protective end plate, the rotor is provided with an unbalanced weight.
本発明の実施例を図面に基いて説明する。 Embodiments of the present invention will be described based on the drawings.
第１図は保護端板１を裏側から見た斜視図であり、図中
２は鋳ぐるみ（インサート）された鉄板であり、他の部
分は亜鉛材によりダイキャスト成形されたものである。FIG. 1 is a perspective view of the protective end plate 1 seen from the back side. In the figure, 2 is an inserted iron plate, and the other parts are die-cast from zinc material.
鉄板２は、第２図に示すように、ドーナツ形薄板であり
、４等配形成されたカシメピン挿通孔３と、８個の溶湯
通し孔４と、シャフト孔５を備えて形成されている。As shown in FIG. 2, the iron plate 2 is a donut-shaped thin plate, and is formed with four equally spaced caulking pin insertion holes 3, eight molten metal penetration holes 4, and a shaft hole 5.
また第１図において、６ａ、６ｂ、６ｃ、６ｄは保護端
板ｌの裏側へ突出する脚部であり、亜鉛ダイキャストに
より鉄板２を鋳ぐるみする際、各溶湯通し孔４を埋めた
亜鉛溶湯によって、隣接する２個の溶湯通し孔４を連結
して形成されている。In addition, in FIG. 1, 6a, 6b, 6c, and 6d are legs that protrude to the back side of the protective end plate l, and when casting the iron plate 2 by zinc die casting, the molten zinc fills each molten metal through hole 4. It is formed by connecting two adjacent molten metal through holes 4.
この各脚部の突出長は、６ａが大きく、ｆＬｌの８ｂ。The protruding length of each leg is 6a, and fLl is 8b.
６ｃ、６ｄは同一て且つ６ａより小さく形成されており
、この結果、脚部６ａの部分の重量が局部的に大きく構
成されて、ｃｉｌ護端板１にアンバランス重量が付与さ
れている。上記アンバランス重量は、４個の脚部のうち
、例えば１個の突出長を他より小さくしても、あるいは
隣接する２個の突出長を他の２個と相違させることによ
っても付与し得るものであり、その構成は任意である。6c and 6d are formed to be the same and smaller than 6a, and as a result, the weight of the leg portion 6a is locally large, giving the cil guard end plate 1 an unbalanced weight. The unbalanced weight can be imparted by, for example, making the protrusion length of one of the four legs smaller than the others, or by making the protrusion lengths of two adjacent legs different from the other two legs. The structure is arbitrary.
また上記保護端板１の鉄板２の表側には、保護端板の本
体となるべき円板体が形成されており、この円板体には
、永久磁石の軸方向端部を保護するための永久磁石との
当接面７、及び永久磁石の外周部を覆う筒状の保護管の
嵌人部８、及び永久磁石各片の周方向の位置決め突起９
がそれぞれ設けられている。Further, on the front side of the iron plate 2 of the protective end plate 1, there is formed a disc body which becomes the main body of the protective end plate, and this disc body has a structure for protecting the axial end of the permanent magnet. A contact surface 7 with the permanent magnet, a fitting part 8 of a cylindrical protection tube that covers the outer periphery of the permanent magnet, and circumferential positioning protrusions 9 of each piece of the permanent magnet.
are provided for each.
第３図及び第４図は、保護端板の表側の形状のそれぞれ
異なる例を示すものである。第３図に示す保護端板１ａ
において、鉄板２の表側に形成される円板体は、強度上
必要とされる一定の厚みを有するリング状の凸部１１を
外周部に設け、材料節減のため中央部は凹状とし、この
凹部内に鉄板２の溶湯通し孔４を連結する段部１０が設
けられ、この段部１０にはカシメピン挿通孔３近傍に座
ぐりを設けて鉄板２を露出させて、カシメビンの頭が収
められるようにすると共に、かしめ時の荷重やかしめ後
の応力を鉄板２て受けるように形成されている。そして
この保護端板１ａは、第１図に示した裏側の脚部６ａに
より適正なアンバランス重量が具備されており、従って
表側にはバランスウェイトが存在せず、リング状の凸部
１１の端面はフラットに形成されている。FIGS. 3 and 4 show examples of different shapes of the front side of the protective end plate. Protective end plate 1a shown in FIG.
In this case, the disc body formed on the front side of the iron plate 2 has a ring-shaped convex part 11 having a certain thickness required for strength on the outer periphery, and has a concave shape in the center to save material. A step part 10 is provided inside the steel plate 2 to connect the molten metal through hole 4, and a counterbore is provided in the step part 10 near the caulking pin insertion hole 3 to expose the iron plate 2 so that the head of the caulking pin can be accommodated. At the same time, the iron plate 2 is formed to receive the load during caulking and the stress after caulking. This protective end plate 1a has an appropriate unbalanced weight due to the legs 6a on the back side shown in FIG. is formed flat.
第４図に示す保護端板１ｂは、リング状の凸部１１ｂの
内周壁の一部を径小に形成して、この部分にバランスウ
ェイト部１２を設けてアンバランス重量を具備させたも
のである。その他は第３図のものど略同形態であり、バ
ランスウェイト部１２０反対側の凹部内には段部１０ｂ
が設けられ、この段部ｌＯｂ及びバランスウェイト部１
２のカシメビン挿通孔３近傍には座ぐりを設けて鉄板２
を露出させである。またリング状凸部１１ｂは、圧縮機
の冷媒のかく拌を防ぐために、バランスウェイト部１２
と端面を一致させてフラットに形成されている。そして
この保護端板１ｂは、バランスウェイト部１２の位置が
第１図に示した裏側の脚部６ａと一致しており、従って
脚部６ａの存在によって、バランスウェイト部１２の軸
方向高さをさほど高くする必要がなく、この結果、リン
グ状の凸部１１ｂの軸方向高さが必要以上に高くなるの
が抑制される。The protective end plate 1b shown in FIG. 4 has an unbalanced weight by forming a part of the inner circumferential wall of a ring-shaped convex part 11b with a small diameter and providing a balance weight part 12 in this part. be. The rest of the structure is substantially the same as that in FIG.
is provided, and this step portion lOb and balance weight portion 1
A counterbore is provided near the caulking pin insertion hole 3 of No. 2, and the iron plate 2 is
It is exposed. Further, the ring-shaped convex portion 11b is provided on the balance weight portion 12 in order to prevent stirring of refrigerant in the compressor.
It is formed flat with the end faces matching. In this protective end plate 1b, the position of the balance weight part 12 coincides with the leg part 6a on the back side shown in FIG. There is no need to increase the height so much, and as a result, the axial height of the ring-shaped convex portion 11b is prevented from increasing more than necessary.
第５図及び第６図は、永久磁石型回転子のそれぞれ平面
断面図及び正面断面図を示し、第５図は回転子を軸方向
の略中央部で切断したもの、第６図はかしめ部分で切断
したものであり、第６図において回転子両端部に装着す
る保護端板の表側形状は、それぞれ第３図及び第４図に
示したものを使用した例を示している。5 and 6 show a plan sectional view and a front sectional view, respectively, of a permanent magnet type rotor. FIG. 5 shows the rotor cut at approximately the center in the axial direction, and FIG. 6 shows the caulked portion. FIG. 6 shows an example in which the front side shapes of the protective end plates attached to both ends of the rotor are those shown in FIGS. 3 and 4, respectively.
図中１３はヨークであり、通常ドーナツ形薄鉄板を軸方
向に積層して厚肉円筒状に形成されている。このヨーク
１３には、カシメビン１６の挿通孔、シャフト孔５、及
び保護端板１ａ、ｌｂのそれぞれの裏側から突出する各
脚部６ａ、６ｂ、６ｃ、６ｄが収納される中空部１７が
それぞれ軸方向に貫通して設けられている。１４は４片
よりなる瓦状の永久磁石であり、保護端板１ａ、ｌｂに
設けた位置決め突起９によって周方向位置が規制されて
、ヨーク１３の外周部に環状に配置される。In the figure, 13 is a yoke, which is usually formed into a thick cylindrical shape by laminating donut-shaped thin iron plates in the axial direction. This yoke 13 has a hollow part 17 in which the insertion hole of the caulking pin 16, the shaft hole 5, and the leg parts 6a, 6b, 6c, and 6d protruding from the back side of each of the protective end plates 1a and lb are housed. It is provided to penetrate in the direction. Reference numeral 14 designates a four-piece tile-shaped permanent magnet, which is arranged in an annular manner around the outer periphery of the yoke 13, with its circumferential position being regulated by positioning protrusions 9 provided on the protective end plates 1a and lb.
１５はステンレス等の非磁性体よりなる筒状の保護管で
あり、永久磁石】４と保護端板１ａ、ｌｂに外嵌されて
いる。カシメビン１６は、ヨーク１３及び保護端板１ａ
、Ｉｂの鉄板２，２を貫通してかしめられており、これ
により保護端板１ａ。A cylindrical protective tube 15 is made of a non-magnetic material such as stainless steel, and is fitted around the permanent magnet 4 and the protective end plates 1a and 1b. The caulking pin 16 includes the yoke 13 and the protective end plate 1a.
, Ib are crimped through the iron plates 2, 2, thereby forming the protective end plate 1a.
１ｂがヨーク１３の端部に固定され、同時に永久磁石１
４及び保護管１５も固定されて回転子が構成されている
。またカシメビン１６が鉄板２，２上でかしめられてい
るため、亜鉛材で形成された保護端板本体にはかしめ時
の荷重やかしめ後の応力が加わることはなく、そしてこ
れら鉄板２，２は、磁気的にはヨーク１３の一部として
機能するものである。1b is fixed to the end of the yoke 13, and at the same time the permanent magnet 1
4 and the protective tube 15 are also fixed to form a rotor. In addition, since the caulking pin 16 is caulked on the iron plates 2, 2, no load during caulking or stress after caulking is applied to the protective end plate body formed of zinc material, and these iron plates 2, 2 , magnetically functions as a part of the yoke 13.
上記回転子は、保護端板１ａ、Ｉｂに設けた脚部６ａ、
６ｂ、６ｃ、６ｄにより両端部のそれぞれにアンバラン
ス重量が具備されており、これにより、具備すべきバラ
ンスウェイト量が比較的小さい場合は、保護端板１ａの
ように表側にバランスウェイトを設ける必要がなく、ま
た具備すべきバランスウェイト量が比較的大きな場合は
、保護端板１ｂのように表側に設けるバランスウェイト
量が削減されて、端面をフラットに形成した保護端板の
軸方向高さを低くすることができる。一方、ヨーク１３
の中空ｇＢＩ７に収納される保護端板の各脚部６ａ、６
ｂ、６ｃ、６ｄは、回転子回転時の遠心力によって応力
を受けても、中空部１７の外周壁が存在するために、塑
性流動に関する品質上の問題は発生しない。The rotor has legs 6a provided on the protective end plates 1a and Ib,
6b, 6c, and 6d are provided with unbalanced weights at each end, and if the amount of balance weight to be provided is relatively small, it is necessary to provide a balance weight on the front side like the protective end plate 1a. If there is no balance weight and the amount of balance weight to be provided is relatively large, the amount of balance weight provided on the front side like the protective end plate 1b is reduced, and the axial height of the protective end plate with a flat end surface is reduced. It can be lowered. On the other hand, York 13
Each leg 6a, 6 of the protective end plate accommodated in the hollow gBI7
b, 6c, and 6d, even if they are subjected to stress due to centrifugal force during rotation of the rotor, no quality problem related to plastic flow occurs because of the presence of the outer peripheral wall of the hollow portion 17.
本発明によれは、ヨークの一部を形成する鋳ぐるみされ
た鉄板によって荷重や応力を負担する構成の永久磁石型
回転子において、前記鉄板の鋳ぐるみの結果形成される
保護端板の脚部によって回転子にバランスウェイトが具
備されるため、保護端板上から回転子外方へ突出するバ
ランスウェイトが不要、あるいはその突出長が削減でき
る。この結果、密閉型電動圧縮機の冷媒のかく拌が抑制
されて、騒音や電気的損失が低減できると共に、圧縮機
構部の潤滑油の枯渇が防止される。According to the present invention, in a permanent magnet type rotor having a structure in which a load or stress is borne by a cast iron plate forming a part of a yoke, a leg portion of a protective end plate formed as a result of casting of the iron plate is provided. Since the rotor is equipped with a balance weight, there is no need for the balance weight to protrude outward from the rotor from above the protective end plate, or the length of its protrusion can be reduced. As a result, stirring of refrigerant in the hermetic electric compressor is suppressed, noise and electrical loss can be reduced, and depletion of lubricating oil in the compression mechanism is prevented.
また上記バランスウェイト部及び保護端板の回転子外方
への突出高さが抑制され°ると共に、突出部の重量も削
減されることから、遠心力による塑性流動の危険が回避
できるものであり、この結果。In addition, the height of the balance weight portion and the protective end plate protruding outward from the rotor is suppressed, and the weight of the protruding portion is also reduced, so the risk of plastic flow due to centrifugal force can be avoided. ,As a result.
バランスウェイト量の比較的大きな回転子の製作が可能
になると共に、高速回転に対する品質に優れた回転子が
構成できる。It becomes possible to manufacture a rotor with a relatively large amount of balance weight, and a rotor with excellent quality for high-speed rotation can be constructed.
図面は本発明の実施例を示し、第１図は裏側からみた保
護端板の斜視図、第２図は鋳ぐるみされる鉄板の平面図
、第３図及び第４図はそれぞれ別の例を示す表側から見
た保護端板の斜視図、第５図及び第６図は永久磁石型回
転子のそれぞれ平面断面図及び正面断面図である。
１、ｌａ、ｌｂ・・・保護端板、２・・・鉄板、３・・
・カシメピン挿通孔、４・・・溶湯通し孔、５・・・シ
ャフト孔、６ ａ 、 ６ ｂ 、 ６ ｃ 、 ６
ｄ−脚部、１２−・・バランスウェイト部、１３・・・
ヨーク、１４・・・永久磁石、１５・・・保護管、１６
・・・カシメビン、１７・・・中空部。The drawings show embodiments of the present invention; FIG. 1 is a perspective view of the protective end plate seen from the back side, FIG. 2 is a plan view of the iron plate to be cast, and FIGS. 3 and 4 show different examples. FIGS. 5 and 6 are a perspective view of the protective end plate seen from the front side, and are respectively a plan sectional view and a front sectional view of the permanent magnet type rotor. 1, la, lb...protective end plate, 2...iron plate, 3...
・Caulking pin insertion hole, 4... Molten metal through hole, 5... Shaft hole, 6 a, 6 b, 6 c, 6
d-leg part, 12-...balance weight part, 13...
Yoke, 14... Permanent magnet, 15... Protection tube, 16
...Kashimebin, 17...Hollow part.
Claims (1)
して円板体を形成し、且つ前記透孔の少なくとも２個を
連結して前記鉄板の片側に突出する脚部を複数形成する
と共に、前記各脚部のうちの１個乃至局部的な数個の突
出長を他と相違させて形成し、前記円板体をヨーク端部
に装着して永久磁石の端部を保護したことを特徴とする
永久磁石型回転子。forming a disc body by die-casting an iron plate having a plurality of through holes, and connecting at least two of the through holes to form a plurality of legs protruding from one side of the iron plate; One or several localized protruding lengths of each leg are formed to be different from the others, and the disc body is attached to the end of the yoke to protect the end of the permanent magnet. Permanent magnet type rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1125328A JP2810962B2 (en) | 1989-05-18 | 1989-05-18 | Permanent magnet type rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1125328A JP2810962B2 (en) | 1989-05-18 | 1989-05-18 | Permanent magnet type rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02303337A true JPH02303337A (en) | 1990-12-17 |
| JP2810962B2 JP2810962B2 (en) | 1998-10-15 |
Family
ID=14907395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1125328A Expired - Lifetime JP2810962B2 (en) | 1989-05-18 | 1989-05-18 | Permanent magnet type rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2810962B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0888963A (en) * | 1994-07-20 | 1996-04-02 | Daikin Ind Ltd | Brushless DC motor |
| US6231317B1 (en) | 1998-09-03 | 2001-05-15 | Hitachi, Ltd. | Sealed compressor driven by a motor |
| KR20030074899A (en) * | 2002-03-14 | 2003-09-22 | 주식회사 엘지이아이 | Device of reducing noise for hermetic rotary compressor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016028191A (en) * | 2012-12-07 | 2016-02-25 | パナソニック株式会社 | Sealed compressor and air conditioner |
-
1989
- 1989-05-18 JP JP1125328A patent/JP2810962B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0888963A (en) * | 1994-07-20 | 1996-04-02 | Daikin Ind Ltd | Brushless DC motor |
| US6231317B1 (en) | 1998-09-03 | 2001-05-15 | Hitachi, Ltd. | Sealed compressor driven by a motor |
| KR20030074899A (en) * | 2002-03-14 | 2003-09-22 | 주식회사 엘지이아이 | Device of reducing noise for hermetic rotary compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2810962B2 (en) | 1998-10-15 |
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