JP2011205860A - Pressure sheet of rotational body, and method of manufacturing pressure sheet thereof - Google Patents

Pressure sheet of rotational body, and method of manufacturing pressure sheet thereof Download PDF

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JP2011205860A
JP2011205860A JP2010073280A JP2010073280A JP2011205860A JP 2011205860 A JP2011205860 A JP 2011205860A JP 2010073280 A JP2010073280 A JP 2010073280A JP 2010073280 A JP2010073280 A JP 2010073280A JP 2011205860 A JP2011205860 A JP 2011205860A
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rotating body
plate
mounting hole
rotating
restraining
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JP5469498B2 (en
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Masatoshi Yoshida
正敏 吉田
Shigenobu Yasunaga
繁信 安永
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Kobe Steel Ltd
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Kobe Steel Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a pressure sheet of a rotational body which can be laminated without generating warpage at lamination and without wasting space, and to provide a method of manufacturing the pressure sheet of the rotational body, in which correction of the warpage can be reliably and easily performed in manufacture.SOLUTION: The pressure sheet is constituted of concentric circle shaped circular disk 2 having projections and recesses in cross section including a peripheral part 3 of a fitting hole, an intermediate part 4 and an outer edge part 5. The projected surface 4a of the intermediate part 4 formed on the surface opposite to the side where the rotational body 8 is disposed is formed within a range contained in the radial direction of the circular disk 2 having a recess shaped surface 4b formed on the surface opposite to the side where the projected surface 4a is formed.

Description

本発明は、モータの両端に設けられ、積層されたロータコアを、拘束力を加えることで支持するモータのエンドプレートなどに代表される回転体の抑え板と、その抑え板の製造方法に関するものである。   The present invention relates to a rotating plate holding plate represented by an end plate of a motor that is provided at both ends of a motor and supports laminated rotor cores by applying a restraining force, and a method of manufacturing the holding plate. is there.

モータを代表とする回転駆動物では、その回転駆動時に回転体が回転軸方向へ変位することを拘束する目的で、回転軸の両端部に抑え板が設けられていることが多い。特に、その代表であるモータにおいては、回転体である積層されたロータコアが、その回転軸方向へ変位する現象を拘束することを目的に、回転軸の両端部に抑え板としてエンドプレートが設けられている。   In a rotationally driven object typified by a motor, a restraining plate is often provided at both ends of the rotational shaft for the purpose of restraining the rotating body from being displaced in the direction of the rotational axis during the rotational driving. In particular, in a typical motor, end plates are provided as restraining plates at both ends of the rotating shaft for the purpose of restraining the phenomenon that the laminated rotor core, which is a rotating body, is displaced in the direction of the rotating shaft. ing.

このようなモータのエンドプレートは、特許文献1や特許文献2に開示されているように、平板状の厚板部品で形成された円板であることが多く、そのエンドプレートを回転体と面接触させることで、その回転体である積層されたロータコアに拘束力を加えていた。   As disclosed in Patent Document 1 and Patent Document 2, the end plate of such a motor is often a circular plate formed of flat plate-like parts, and the end plate is placed on the surface of the rotating body. By bringing them into contact with each other, a binding force was applied to the laminated rotor core that is the rotating body.

これら平板状のエンドプレートは、シート状の圧延板をプレス加工によって打抜くことで製造されることが一般的であった。しかしながら、プレス加工によってエンドプレートを製造すると、そのエンドプレートに残留応力などに起因する反りなどが発生することが頻繁にあり、その結果、エンドプレートが回転体である積層されたロータコアに確実に面接触しないことがあって、このような単なる平板状のエンドプレートを用いた場合は、確実に回転体に拘束力を加えることができないことがしばしばあるという問題があった。   These flat end plates are generally manufactured by punching a sheet-like rolled plate by press working. However, when an end plate is manufactured by press working, warping or the like due to residual stress often occurs in the end plate, and as a result, the end plate is reliably faced to the laminated rotor core that is a rotating body. When such a simple flat end plate is used, there is a problem that a restraining force cannot be reliably applied to the rotating body.

また、エンドプレートを平板状ではなく、テーパー面を備えたプレート状にした技術が、特許文献3や特許文献4で提案されている。これらのエンドプレートはその外周縁のみで、積層されたロータコアに拘束力を加えるものである。   Further, Patent Document 3 and Patent Document 4 propose a technique in which the end plate is not shaped like a flat plate but a plate having a tapered surface. These end plates are only the outer peripheral edge, and apply a restraining force to the laminated rotor cores.

特に近年においては、自動車等の高性能化のため、モータを代表とする回転駆動物への軽量化要求が高くなってきており、エンドプレートをはじめとする抑え板にも軽量化ひいては薄肉化が求められるようになってきており、特許文献3や特許文献4で提案のエンドプレートではその要求に対応することは困難である。   In recent years, in particular, in order to improve the performance of automobiles and the like, there has been an increasing demand for weight reduction of rotationally driven objects such as motors. The end plate proposed in Patent Documents 3 and 4 is difficult to meet the demand.

また、単に抑え板を薄肉化しただけでは剛性を十分に確保することができなくなるため、抑え板を断面凹凸状の同心円形状に形成することで剛性を確保しようという技術も最近開発されつつある。更には、小型化に対する要求もあり、スペース制約の観点からその凹凸深さをできるだけ浅くしようと方向性もある。   Further, since the rigidity cannot be sufficiently ensured simply by reducing the thickness of the holding plate, a technique for securing the rigidity by forming the holding plate in a concentric circular shape having a concavo-convex cross section has recently been developed. Furthermore, there is a demand for miniaturization, and there is a direction to make the depth of the unevenness as shallow as possible from the viewpoint of space restriction.

一方、自動車等に用いられるモータなどでは、高性能化を目的とし、その回転体であるロータコアを積層したロータの外形拡大や、その回転速度(回転数)の上昇も図られており、回転体に加わる遠心力も増大する傾向にある。遠心力が増加した場合、回転体をしっかりと拘束しないと、遠心力で回転体が回転軸の方向へ変位し、部品の破損などにつながるといった問題が発生することがある。このため、エンドプレートをはじめとする抑え板による回転体に対する拘束力もこれまで以上に高いものが要求されるようになってきている。   On the other hand, in motors used in automobiles, etc., the purpose of improving performance is to increase the outer shape of the rotor with the rotor core, which is the rotating body, and to increase the rotational speed (number of rotations). There is also a tendency for the centrifugal force to be increased. When the centrifugal force increases, if the rotating body is not firmly restrained, a problem may occur that the rotating body is displaced in the direction of the rotating shaft by the centrifugal force, leading to breakage of parts. For this reason, the restraining force with respect to the rotating body by the restraining plate including the end plate is required to be higher than ever.

これらの現状を踏まえ、本発明者は、剛性を十分に確保したうえで、回転体の回転速度(回転数)が上昇しても、その回転体に十分な拘束力を加えることができる回転体の抑え板に関する技術を開発するために、鋭意、実験、研究を進めた。その結果、回転体に接触する平坦面を有する取付孔周辺部と、その取付孔周辺部の外周側に段差を介して連続しその回転体には接触しない中間部と、その中間部の外周側に段差を介して連続しその回転体に接触する平坦面を有する外縁部とよりなる断面凹凸状の同心円形状の円板を、回転体の抑え板として採用することで、十分な剛性を確保することができ、また、その取付孔周辺部の外周側位置を適切な位置に配置することで、回転体の回転速度(回転数)が上昇しても、外縁部によりその回転体に十分な拘束力を加えることができることを見出した。   Based on these current conditions, the present inventor can ensure sufficient rigidity and apply a sufficient restraining force to the rotating body even if the rotational speed (number of rotations) of the rotating body increases. In order to develop the technology related to the restraining plate, we have conducted diligence, experiments and research. As a result, the peripheral part of the mounting hole having a flat surface that comes into contact with the rotating body, the intermediate part that continues to the outer peripheral side of the peripheral part of the mounting hole through a step and does not contact the rotating body, and the outer peripheral side of the intermediate part By adopting a concentric circular disk with a concave-convex cross section consisting of an outer edge having a flat surface that contacts the rotating body continuously through a step as a restraining plate for the rotating body, sufficient rigidity is ensured. In addition, even if the rotational speed (number of rotations) of the rotating body is increased by arranging the outer peripheral side position of the periphery of the mounting hole at an appropriate position, the outer edge portion sufficiently restrains the rotating body. I found out that I can apply power.

しかし、前述したように、抑え板の反りが大きい場合には、回転体に加える拘束力に、その円周方向にバラツキが発生する可能性があり、抑え板の平坦度を確保することが重要になってくる。抑え板の平坦度を確保するためには、抑え板の製造時において、コイルからシート状の部品とする際に、複数回の矯正加工を行い、できる限り平坦度を確保をしようとすることが一般的には行われる。しかしながら、この方法で平坦度を確保しても、その後に、孔開け加工などを行うと反りが発生してしまう問題がある。   However, as described above, when the warping of the pressing plate is large, there is a possibility that the restraining force applied to the rotating body may vary in the circumferential direction, and it is important to ensure the flatness of the pressing plate. It becomes. In order to ensure the flatness of the presser plate, it is necessary to perform correction processing a plurality of times and try to ensure the flatness as much as possible when making the sheet from a coil during the manufacture of the presser plate. Generally done. However, even if the flatness is ensured by this method, there is a problem that warping may occur if a drilling process is performed thereafter.

このような反りの発生を低減するための方法として、アルミ磁気ディスクなどでは、アルミニウム板を複数枚積層して、加圧焼鈍する方法が、特許文献5や特許文献6等で提案されている。   As a method for reducing the occurrence of such warp, Patent Document 5 and Patent Document 6 propose a method of laminating a plurality of aluminum plates and performing pressure annealing on an aluminum magnetic disk or the like.

しかしながら、これら特許文献5や特許文献6等に記載された提案は、凹凸が形成されてないアルミニウム板を対象とした提案であって、アルミニウム板をプレス成形により孔開けした後に、複数枚のアルミニウム板を積層し、加圧焼鈍することで、アルミニウム板の反りを矯正しようという方法に関する提案である。   However, the proposals described in Patent Document 5, Patent Document 6, and the like are proposals for an aluminum plate on which no irregularities are formed, and a plurality of aluminum sheets are formed after punching the aluminum plate by press molding. This is a proposal regarding a method of correcting warpage of an aluminum plate by laminating plates and performing pressure annealing.

図9に、従来の一般的なプレス成形により断面凹凸状の同心円形状に形成された円板2でなる抑え板1の断面形状を示す。この従来の一般的なプレス成形により成形された抑え板1は、その板厚が、段差7を含む全ての部位(取付孔周辺部3、中間部4、外縁部5)で均一であるため、斜め方向に折曲した段差7の部位では、回転軸方向の厚みが他の部位の厚みより厚くなり、その結果、この従来の一般的なプレス成形により成形された抑え板1を積層すると、図10に示すように、段差7或いはその段差7の周辺の部位のみが接触することとなり、積層された抑え板1,1の取付孔周辺部3,3間、外縁部5,5間等には隙間が形成されることになる。   In FIG. 9, the cross-sectional shape of the pressing plate 1 which consists of the disc 2 formed in the concentric circular shape of the uneven | corrugated cross section by the conventional general press molding is shown. Since the holding plate 1 formed by this conventional general press molding has a uniform plate thickness in all the parts including the step 7 (the mounting hole peripheral part 3, the intermediate part 4, the outer edge part 5), In the portion of the step 7 bent in the oblique direction, the thickness in the rotational axis direction is thicker than the thickness of the other portions. As a result, when the holding plate 1 formed by this conventional general press molding is laminated, As shown in FIG. 10, only the step 7 or a portion around the step 7 comes into contact, and between the mounting hole peripheral portions 3 and 3 of the laminated holding plates 1 and 1, between the outer edge portions 5 and 5, etc. A gap is formed.

その結果、特許文献5や特許文献6等に記載された方法を、従来の一般的なプレス成形により断面凹凸状の同心円形状に形成された抑え板1の反りの矯正に採用しようとしても、図10に示すように、複数枚の抑え板1を積層した際には、前記したように段差7或いはその段差7の周辺の部位のみが接触することとなり、最も平坦度が要求される、回転体8との接触部となる外縁部5や取付孔周辺部3には十分な加圧力を加えることができなくなる。従って、積層した複数枚の抑え板1を加圧焼鈍しても、それら抑え板1の反りの矯正はできない。このように、特許文献5や特許文献6等に記載された方法は、そのまま採用することはできないものであった。   As a result, even if it is going to employ | adopt the method described in patent document 5 or patent document 6 etc. for the correction | amendment of the curvature of the pressing board 1 formed in the concentric circle shape of the uneven | corrugated cross section by the conventional general press molding, FIG. As shown in FIG. 10, when a plurality of holding plates 1 are stacked, as described above, only the step 7 or a portion around the step 7 comes into contact, and the rotating body is required to have the highest flatness. A sufficient pressure cannot be applied to the outer edge portion 5 and the mounting hole peripheral portion 3 that are in contact with the outer peripheral portion 8. Therefore, even if the plurality of laminated holding plates 1 are subjected to pressure annealing, the warping of the holding plates 1 cannot be corrected. As described above, the methods described in Patent Document 5, Patent Document 6, and the like cannot be employed as they are.

特開2007−259583号公報JP 2007-259583 A 特開2006−67675号公報JP 2006-67675 A 特開2008−289329号公報JP 2008-289329 A 特開2008−86187号公報JP 2008-86187 A 特開平9−316614号公報JP 9-316614 A 特開2004−63028号公報JP 2004-63028 A

本発明は、上記従来の問題を解決せんとしてなされたもので、積層時に反りの発生がなく、また、スペースの無駄なく積層することができる回転体の抑え板と、それに加えて製造時に反りの矯正を確実且つ容易に行うことができる回転体の抑え板の製造方法を提供することを課題とするものである。   The present invention has been made as a solution to the above-described conventional problems, and there is no warpage during stacking, and a rotating body restraining plate that can be stacked without wasting space, and in addition, warpage during manufacturing. It is an object of the present invention to provide a method for manufacturing a rotating plate holding plate that can be reliably and easily corrected.

請求項1記載の発明は、回転軸が挿通される取付孔が中心に形成され前記回転軸と一体となって回転すると共に、その一側面側に配置される回転体に接触してその回転体に拘束力を加える円板よりなる回転体の抑え板であって、前記円板は、前記回転体に接触する平坦面を有する取付孔周辺部と、その取付孔周辺部の外周側に段差を介して連続し前記回転体には接触しない中間部と、その中間部の外周側に段差を介して連続し前記回転体に接触する平坦面を有する外縁部とよりなる断面凹凸状の同心円形状に形成されており、前記中間部の、前記回転体が配置される側とは反対側の面に形成された凸状面が、前記回転体が配置される側の面に形成された凹状面の、前記円板の径方向に収まる範囲内に形成されていることを特徴とする回転体の抑え板である。   According to the first aspect of the present invention, an attachment hole through which the rotating shaft is inserted is formed at the center and rotates integrally with the rotating shaft, and contacts with the rotating body disposed on one side surface of the rotating body. A rotating plate holding plate made of a disk that applies a restraining force to the rotating body, wherein the disk has a step on the outer peripheral side of the mounting hole peripheral portion having a flat surface that contacts the rotating body and the mounting hole peripheral portion. A concentric circular section having a concavity and convexity formed by an intermediate portion that is continuous through and not in contact with the rotating body, and an outer edge portion that has a flat surface that is in contact with the rotating body through a step on the outer peripheral side of the intermediate portion. The convex surface formed on the surface of the intermediate portion opposite to the side on which the rotating body is disposed is the concave surface formed on the surface on the side on which the rotating body is disposed. The rotating body is formed within a range that fits in the radial direction of the disk. For example a plate.

請求項2記載の発明は、前記凸状面の内側に形成された***部分と、前記凹状面で囲まれた空間の、前記円板径方向における夫々の断面が、前記回転体側を広幅とする同面積の台形状であることを特徴とする請求項1記載の回転体の抑え板である。   According to a second aspect of the present invention, the cross section in the disk radial direction of the raised portion formed inside the convex surface and the space surrounded by the concave surface makes the rotating body side wide. It is a trapezoid shape of the same area, The rotating body holding plate according to claim 1.

請求項3記載の発明は、前記円板の回転軸方向の厚みは、少なくとも前記外縁部の最外周側を除いて全て均一の厚みであることを特徴とする請求項1または2記載の回転体の抑え板である。   According to a third aspect of the present invention, the thickness of the disc in the direction of the rotation axis is uniform, except for at least the outermost peripheral side of the outer edge portion. It is a holding plate.

請求項4記載の発明は、前記円板はモータのエンドプレートであって、前記回転体は積層されたモータのロータコアであることを特徴とする請求項1乃至3のいずれかに記載の回転体の抑え板である。   According to a fourth aspect of the present invention, the disk is an end plate of a motor, and the rotating body is a rotor core of a stacked motor. The rotating body according to any one of the first to third aspects It is a holding plate.

請求項5記載の発明は、請求項1乃至4のいずれかに記載の回転体の抑え板の製造方法であって、冷間圧延材でなる素材円板に、プレス加工或いは冷間鍛造を施して、前記取付孔と、前記中間部の凸状面と凹状面を形成した後に、前記円板を複数枚積層して、それら円板の板厚方向に加圧焼鈍することで、製造されることを特徴とする回転体の抑え板の製造方法である。   The invention according to claim 5 is the method of manufacturing a rotating body restraining plate according to any one of claims 1 to 4, wherein the material disk made of cold rolled material is subjected to press working or cold forging. Then, after forming the mounting hole and the convex and concave surfaces of the intermediate portion, a plurality of the discs are stacked and manufactured by pressure annealing in the plate thickness direction of the discs. This is a method for manufacturing a retaining plate for a rotating body.

本発明の請求項1記載の回転体の抑え板によると、複数枚の抑え板を積層すると、抑え板は隙間なく積層されることとなり、積層時に反りの発生がなく、スペースの無駄なく積層することができる。また、製造時において複数枚の円板を積層して製造すれば、最も平坦度が要求される、回転体との接触部となる外縁部や取付孔周辺部に確実に加圧力を加えることができ、断面凹凸状の同心円形状に形成される抑え板であるにかかわらず、反りの矯正を確実且つ容易に行うことができる。   According to the pressing plate of the rotating body according to claim 1 of the present invention, when a plurality of pressing plates are stacked, the pressing plates are stacked without gaps, and there is no warping during stacking and stacking without waste of space. be able to. In addition, if a plurality of discs are laminated at the time of manufacturing, the pressing force can be surely applied to the outer edge portion or the mounting hole peripheral portion which is the contact portion with the rotating body, which requires the most flatness. In addition, the warp can be reliably and easily corrected regardless of the constraining plate formed in a concentric circular shape having an uneven cross section.

本発明の請求項2記載の回転体の抑え板によると、積層時に抑え板は略全面が密接することとなり、積層時の反りの発生を更に確実に防止することができ、また、スペースの無駄なく密接した状態で積層することができる。また、製造時において複数枚の円板を積層して製造すれば、最も平坦度が要求される、回転体との接触部となる外縁部や取付孔周辺部のみならず、段差を含む中間部も均一な荷重で加圧することができ、製造時の矯正をより確実に行うことができる。   According to the restraining plate for a rotating body according to claim 2 of the present invention, the restraining plate is in close contact with each other during lamination, and it is possible to more reliably prevent the occurrence of warpage during lamination, and waste of space. And can be stacked in close contact. In addition, if a plurality of discs are laminated and manufactured at the time of manufacture, not only the outer edge part and the peripheral part of the mounting hole that are the contact part with the rotating body, the intermediate part including a step is required, which is the most required flatness. Can be pressurized with a uniform load, and correction during manufacturing can be performed more reliably.

本発明の請求項3記載の回転体の抑え板によると、円板の板厚が、少なくとも外縁部の最外周側を除く全ての位置で同じ厚みであるため、製造が容易であり、また、反りが発生しにくい。   According to the restraining plate of the rotating body according to claim 3 of the present invention, the thickness of the disk is the same at all positions except at least the outermost peripheral side of the outer edge portion, so that the manufacture is easy, Less likely to warp.

本発明の請求項4記載の回転体の抑え板によると、本発明をモータのエンドプレートに適用することができる。   According to the pressing plate for a rotating body according to claim 4 of the present invention, the present invention can be applied to an end plate of a motor.

本発明の請求項5記載の回転体の抑え板の製造方法によると、最も平坦度が要求される、回転体との接触部となる外縁部や取付孔周辺部に十分な加圧力を加えることができ、断面凹凸状の同心円形状に形成される抑え板であるにかかわらず、製造時に反りの矯正を確実且つ容易に行うことができる。   According to the method for manufacturing a rotating body restraining plate according to claim 5 of the present invention, a sufficient pressurizing force is applied to the outer edge portion and the mounting hole peripheral portion which are the contact portions with the rotating body, which are required to have the highest flatness. Regardless of the constraining plate formed in a concentric circular shape with a concavo-convex cross section, it is possible to reliably and easily correct the warp during manufacturing.

断面凹凸状の同心円形状に形成された抑え板の全体形状を示す斜視図である。It is a perspective view which shows the whole shape of the pressing board formed in the concentric circle shape of a cross-sectional uneven | corrugated shape. 本発明の一実施形態に係る抑え板を用いて回転体に拘束力を加える状態を示す回転体を含めた図1のA−A線断面図である。It is the sectional view on the AA line of FIG. 1 including the rotary body which shows the state which applies a restraining force to a rotary body using the holding plate which concerns on one Embodiment of this invention. 同実施形態に係る抑え板の中間部付近を拡大して示す断面図である。It is sectional drawing which expands and shows the intermediate part vicinity of the holding plate which concerns on the same embodiment. 同実施形態に係る抑え板を積層した状態を示す断面図である。It is sectional drawing which shows the state which laminated | stacked the suppression board which concerns on the same embodiment. 本発明の異なる実施形態に係る抑え板を示す図1のA−A線断面図である。It is the sectional view on the AA line of FIG. 1 which shows the holding plate which concerns on different embodiment of this invention. 同実施形態に係る抑え板を積層した状態を示す断面図である。It is sectional drawing which shows the state which laminated | stacked the suppression board which concerns on the same embodiment. 実施例で製造した抑え板の詳細形状を示す断面図である。It is sectional drawing which shows the detailed shape of the control board manufactured in the Example. 実施例において、円板を複数枚積層してそれら円板の板厚方向に加圧焼鈍している状態を示す縦断面図である。In an Example, it is a longitudinal cross-sectional view which shows the state which laminated | stacked several discs and pressure-annealed in the plate | board thickness direction of those discs. 従来の一般的なプレス成形により製造した抑え板を示す図1のA−A線断面図である。It is the sectional view on the AA line of FIG. 1 which shows the holding board manufactured by the conventional general press molding. 従来の一般的なプレス成形により製造した抑え板を積層した状態を示す断面図である。It is sectional drawing which shows the state which laminated | stacked the suppression board manufactured by the conventional general press molding.

以下、本発明を添付図面に示す実施形態に基づいて更に詳細に説明する。   Hereinafter, the present invention will be described in more detail based on embodiments shown in the accompanying drawings.

図1〜図4は本発明の一実施形態を示し(但し、図1は本発明の異なる実施形態、従来技術も同様である。)、図1は抑え板の全体形状を示す斜視図であり、図2はその抑え板を用いて回転体に拘束力を加える状態を示す回転体を含めた図1のA−A線断面図、図3は抑え板の中間部付近を拡大して示す断面図、図4は抑え板を積層した状態を示す断面図である。   1 to 4 show an embodiment of the present invention (however, FIG. 1 is a different embodiment of the present invention, and the prior art is also the same), and FIG. 1 is a perspective view showing the overall shape of the holding plate. 2 is a cross-sectional view taken along line AA of FIG. 1 including a rotating body showing a state in which a restraining force is applied to the rotating body using the holding plate, and FIG. 3 is an enlarged cross-sectional view showing the vicinity of an intermediate portion of the holding plate. FIG. 4 and FIG. 4 are cross-sectional views showing a state in which holding plates are laminated.

例えば、本発明が適用されるモータにおいては、回転体8である電磁鋼板が積層されたロータコアが、その回転軸(図示せず)の軸方向へ変位する現象を拘束することを目的に、その回転軸の両端側に、抑え板1としてエンドプレートが設けられている。その抑え板1は、回転軸が挿通される取付孔6が中心に形成された円板2で形成されており、円板2は、その回転軸と一体となって回転すると共に、その一側面側に配置される回転体8に面接触することで回転体8に拘束力を加える働きをする。   For example, in a motor to which the present invention is applied, for the purpose of restraining a phenomenon in which a rotor core in which electromagnetic steel plates that are rotating bodies 8 are laminated is displaced in the axial direction of its rotating shaft (not shown). End plates are provided as holding plates 1 on both ends of the rotating shaft. The restraining plate 1 is formed of a disc 2 formed around a mounting hole 6 through which the rotating shaft is inserted. The disc 2 rotates integrally with the rotating shaft and has one side surface. It acts to apply a restraining force to the rotating body 8 by making surface contact with the rotating body 8 arranged on the side.

この円板2は、回転体8に面接触する平坦面3aを有する円環板状の取付孔周辺部3と、その円環板状の取付孔周辺部3の外周側に段差7を介して連続し、回転体8には接触しない円環板状の中間部4と、その円環板状の中間部4の外周側に段差7を介して連続し、回転体8に接触する平坦面5aを有する円環板状の外縁部5とよりなる断面凹凸状の同心円形状に形成されている。このように、円板2を断面凹凸状の同心円形状に形成することで、十分な剛性を確保することができる。   The circular plate 2 includes an annular plate-shaped mounting hole peripheral portion 3 having a flat surface 3 a that comes into surface contact with the rotating body 8, and a step 7 on the outer peripheral side of the circular plate-shaped mounting hole peripheral portion 3. An annular plate-shaped intermediate portion 4 that is continuous and does not contact the rotating body 8, and a flat surface 5 a that continues to the outer peripheral side of the annular plate-shaped intermediate portion 4 via a step 7 and contacts the rotating body 8. It is formed in a concentric circular shape with a concave-convex cross section consisting of an annular plate-shaped outer edge portion 5 having Thus, sufficient rigidity can be ensured by forming the disc 2 in a concentric circular shape with a concave-convex cross section.

また、図2に示すように、中間部4の、回転体8が配置される側とは反対側の面には凸状面4aが形成されており、一方、回転体8が配置される側の面には凹状面4bが形成されている。   Further, as shown in FIG. 2, a convex surface 4a is formed on the surface of the intermediate portion 4 opposite to the side on which the rotating body 8 is disposed, while the side on which the rotating body 8 is disposed. A concave surface 4b is formed on this surface.

この図2〜図4に示す実施形態においては、凸状面4aの内側に形成された***部分4cと、凹状面4bで囲まれた空間9の、円板2の径方向における夫々の断面が、回転体8側を広幅とする同面積の等脚台形状となっている。円板2の形状をこのような形状とすることで、図4に示すように、円板2を積層したときには、円板2を構成する取付孔周辺部3、中間部4、および外縁部5は全て密接することとなる。   In the embodiment shown in FIGS. 2 to 4, the cross section in the radial direction of the disk 2 of the raised portion 4 c formed inside the convex surface 4 a and the space 9 surrounded by the concave surface 4 b is shown. The shape is an isosceles trapezoid having the same area with the rotating body 8 side wide. By making the shape of the disc 2 into such a shape, as shown in FIG. 4, when the discs 2 are laminated, the mounting hole peripheral portion 3, the intermediate portion 4, and the outer edge portion 5 that constitute the disc 2. Are all closely related.

このように、***部分4cと空間9の断面形状を、回転体8側を広幅とする同面積の等脚台形状、或いは同一断面の台形状とすれば、積層した円板2の解載、剥離を容易に行うことができる。   In this way, if the cross-sectional shape of the raised portion 4c and the space 9 is an isosceles trapezoidal shape having the same area with the width of the rotating body 8 or a trapezoidal shape having the same cross-section, the stacked disk 2 can be remounted. Peeling can be easily performed.

この図2〜図4に示す実施形態では、凸状面4aの両側部に位置する段差7の凸側斜面7aと、凹状面4bの両側部に位置する段差7の凹側斜面7bは、夫々同勾配の傾斜面であり、且つ、図4に示すように、複数枚の円板2を積層した際に密接するような位置に形成されている。   In the embodiment shown in FIGS. 2 to 4, the convex side slope 7a of the step 7 located on both sides of the convex surface 4a and the concave side slope 7b of the step 7 located on both sides of the concave surface 4b are respectively shown. As shown in FIG. 4, the inclined surfaces have the same gradient, and are formed at positions that come into close contact when a plurality of discs 2 are stacked.

但し、中間部4の表裏面を構成する凸状面4aと凹状面4bは、必ずしもこの実施形態のように形成されている必要はなく、凸状面4aが、凹状面4bの、円板2の径方向に収まる範囲内に最低限形成されておれば良い。具体的には、必ずしも凸状面4aの円板2の径方向の幅と、凹状面4bの円板2の径方向の幅が、同一幅でなくても良く、凸状面4aの円板2の径方向の幅が、凹状面4bの円板2の径方向の幅より小さく、且つ、凸側斜面7aが凹側斜面7bより中間部4の中心寄りに形成されていても良い。   However, the convex surface 4a and the concave surface 4b constituting the front and back surfaces of the intermediate portion 4 are not necessarily formed as in this embodiment, and the convex surface 4a is a disc 2 having a concave surface 4b. It suffices if it is at least formed within a range that fits in the radial direction. Specifically, the radial width of the disc 2 of the convex surface 4a and the radial width of the disc 2 of the concave surface 4b do not necessarily have to be the same width, and the disc of the convex surface 4a. The radial width of 2 may be smaller than the radial width of the disc 2 of the concave surface 4b, and the convex slope 7a may be formed closer to the center of the intermediate portion 4 than the concave slope 7b.

また、凸状面4aの両側部に位置する段差7の凸側斜面7aと、凹状面4bの両側部に位置する段差7の凹側斜面7bは、必ずしも同勾配である必要はなく、円板2の積層時に、積層した円板2の取付孔周辺部3と外縁部5が夫々密接することができれば、どのような勾配であっても構わない。また同様に、凸側斜面7aと凹側斜面7bは、円板2の積層時に、積層した円板2の取付孔周辺部3と外縁部5が夫々密接することができれば、曲面等であっても構わない。   Further, the convex slope 7a of the step 7 located on both sides of the convex surface 4a and the concave slope 7b of the step 7 located on both sides of the concave surface 4b do not necessarily have the same slope. As long as the mounting hole peripheral portion 3 and the outer edge portion 5 of the stacked discs 2 can be in close contact with each other when the two layers are stacked, any gradient may be used. Similarly, the convex slope 7a and the concave slope 7b are curved surfaces or the like if the mounting hole peripheral part 3 and the outer edge part 5 of the stacked disks 2 can be brought into close contact with each other when the disks 2 are stacked. It doesn't matter.

また、この図2〜図4に示す実施形態においては、円板2の回転軸方向の厚みは、外縁部5の面取り部5bが形成された最外周側の部位を除いて全て均一の厚みである。すなわち、板厚は、段差7に該当する部位のみが、外縁部5の面取り部5bが形成された最外周側の部位を除く他の部位と比較して薄く形成されている。   Also, in the embodiment shown in FIGS. 2 to 4, the thickness of the disc 2 in the direction of the rotation axis is all uniform except for the outermost peripheral portion where the chamfered portion 5 b of the outer edge portion 5 is formed. is there. That is, the plate thickness is formed so that only the portion corresponding to the step 7 is thinner than the other portions excluding the outermost peripheral portion where the chamfered portion 5b of the outer edge portion 5 is formed.

外縁部5に設けられた面取り部5bは、組み付け時の切り傷防止、製造時の加圧焼鈍終了後など積層後の解載、剥離を容易にするために設けたものであり、必要最低限の大きさであれば良く、必ずしも外縁部5の全周に設ける必要はない。また、この実施形態に示すように、必ずしも回転体8が配置される側と反対側の面に形成されている必要もなく、回転体8が配置される側の面、或いはそれら両方の面に形成されていても良い。尚、この面取り部5bは必ずしも形成される必要はない。   The chamfered portion 5b provided on the outer edge portion 5 is provided for facilitating the removal and peeling after lamination such as prevention of cuts during assembly and after completion of pressure annealing during production. The size of the outer edge 5 is not necessarily required. Further, as shown in this embodiment, it is not always necessary to be formed on the surface opposite to the side on which the rotating body 8 is disposed, but on the surface on the side on which the rotating body 8 is disposed, or on both surfaces thereof. It may be formed. The chamfered portion 5b is not necessarily formed.

尚、図1に示す3箇所の6aは、取付孔6の周囲に設けられた係止溝であって、回転軸の周囲に設けられた係止片(図示せず)が係止されることによって、抑え板1は、回転駆動する回転軸と一体となって回転することができる。   In addition, three 6a shown in FIG. 1 are the locking grooves provided in the circumference | surroundings of the attachment hole 6, Comprising: The locking piece (not shown) provided in the circumference | surroundings of the rotating shaft is locked. Thus, the holding plate 1 can rotate integrally with the rotating shaft that is driven to rotate.

また、この抑え板1は、金属製、樹脂製等の非磁性材料で、強度を確保できる材料であればどのような材質のもので形成されていても構わないが、抑え板1をモータのエンドプレートとして用いる場合は、特に、アルミニウム板材で形成されていることが望ましい。また、回転時の塑性変形防止という観点からは、そのアルミニウム板材の0.2%耐力は高い方が望ましい。更には、プレス切断時に反りが生じにくく、平坦面3b,5bを形成しやすいことを考慮すれば、AA乃至JIS規格に規定された3000系、5000系、或いは6000系等のアルミニウム材料でなる冷間圧延材で形成されていることが最も望ましい。   Further, the holding plate 1 may be formed of any material as long as it is a non-magnetic material such as metal or resin, and can secure the strength. When used as an end plate, it is particularly desirable that the end plate be formed of an aluminum plate. Further, from the viewpoint of preventing plastic deformation during rotation, it is desirable that the aluminum plate material has a higher 0.2% proof stress. Furthermore, in consideration of the fact that warpage is unlikely to occur during press cutting and the flat surfaces 3b and 5b are easily formed, a cold made of an aluminum material such as 3000 series, 5000 series, or 6000 series defined in AA to JIS standards. Most preferably, it is formed of a hot rolled material.

抑え板1がアルミニウム合金材料でなる冷間圧延材で形成されておれば、他の金属材料で抑え板1を製造する場合と比較して軽量化を図ることができる。また、抑え板1をモータのエンドプレートとして用いる場合は、アルミニウム自体が非磁性材料であるため、磁力線の漏れを抑制できるという付加価値効果も得ることができる。   If the restraint plate 1 is formed of a cold rolled material made of an aluminum alloy material, the weight can be reduced as compared with the case where the restraint plate 1 is manufactured using another metal material. Further, when the restraining plate 1 is used as an end plate of a motor, since aluminum itself is a nonmagnetic material, an added value effect that leakage of magnetic field lines can be suppressed can be obtained.

次に、本発明の異なる実施形態を、図5および図6に基づいて説明する。この実施形態が、図2〜図4に示す実施形態と異なるのは、段差7の形状である。この図5および図6に示す実施形態において、凸状面4aの両側部に位置する段差7の凸側斜面7aと、凹状面4bの両側部に位置する段差7の凹側斜面7bは、回転軸と軸方向と平行する直立したような面となっている。また、凸状面4aの円板2の径方向の幅が、凹状面4bの円板2の径方向の幅より小さく、且つ、凸側斜面7aが凹側斜面7bより中間部4の中心寄りに形成されている。   Next, different embodiments of the present invention will be described with reference to FIGS. This embodiment differs from the embodiment shown in FIGS. 2 to 4 in the shape of the step 7. In the embodiment shown in FIGS. 5 and 6, the convex slope 7a of the step 7 located on both sides of the convex face 4a and the concave slope 7b of the step 7 located on both sides of the concave face 4b are rotated. It is an upright surface parallel to the shaft and the axial direction. Further, the radial width of the disc 2 of the convex surface 4a is smaller than the radial width of the disc 2 of the concave surface 4b, and the convex slope 7a is closer to the center of the intermediate portion 4 than the concave slope 7b. Is formed.

この実施形態は以上のように構成されているため、図6に示すように、積層時には、取付孔周辺部3、中間部4、および外縁部5は全て密接することとなる。尚、凸状面4aの両側部に位置する段差7の凸側斜面7aと、凹状面4bの両側部に位置する段差7の凹側斜面7bが、図5および図6に示すように、回転軸と軸方向と平行する直立したような面である場合は、凸状面4aの円板2の径方向の幅と、凹状面4bの円板2の径方向の幅が同一幅ではなく、凸状面4aの円板2の径方向の幅が、凹状面4bの円板2の径方向の幅より小さく、且つ、凸側斜面7aが凹側斜面7bより中間部4の中心寄りに形成されている方が、積層、解載が支障なく行われるので好ましい。   Since this embodiment is configured as described above, as shown in FIG. 6, the mounting hole peripheral portion 3, the intermediate portion 4, and the outer edge portion 5 are all in close contact when stacked. As shown in FIGS. 5 and 6, the convex slope 7a of the step 7 located on both sides of the convex surface 4a and the concave slope 7b of the step 7 located on both sides of the concave surface 4b are rotated as shown in FIGS. In the case of an upright surface parallel to the axis and the axial direction, the radial width of the disc 2 of the convex surface 4a and the radial width of the disc 2 of the concave surface 4b are not the same width, The radial width of the disc 2 of the convex surface 4a is smaller than the radial width of the disc 2 of the concave surface 4b, and the convex slope 7a is formed closer to the center of the intermediate portion 4 than the concave slope 7b. It is preferable that stacking and mounting are performed without any problem.

次に、本発明の回転体の抑え板の製造方法について説明する。   Next, the manufacturing method of the holding plate of the rotary body of this invention is demonstrated.

この抑え板1の製造に用いる材料としては、前記したアルミニウム合金材料を用いることが好ましい。まず、このアルミニウム合金材料でなるコイルを、冷間圧延で矯正加工してシート状とする。この冷間圧延材を打ち抜き加工することで素材を円板状とした後に、その素材円板に、プレス加工或いは冷間鍛造を施して、取付孔6と、中間部4の凸状面4aと凹状面4bを形成する。その円板2を複数枚積層して、それら円板2の板厚方向に加圧焼鈍すれば、抑え板1を簡単な方法で製造することができる。   As a material used for manufacturing the holding plate 1, the above-described aluminum alloy material is preferably used. First, the coil made of this aluminum alloy material is straightened by cold rolling to form a sheet. After punching the cold rolled material into a disk shape, the material disk is subjected to pressing or cold forging, and the mounting hole 6 and the convex surface 4a of the intermediate portion 4 A concave surface 4b is formed. If a plurality of the discs 2 are stacked and subjected to pressure annealing in the thickness direction of the discs 2, the restraining plate 1 can be manufactured by a simple method.

尚、この抑え板1の製造にアルミニウム合金材料を用いれば、200〜400℃程度の比較的低温で、加圧焼鈍を実施することができ、抑え板1を低コストで製造することが可能になる。   In addition, if aluminum alloy material is used for manufacture of this restraining board 1, pressure annealing can be implemented at a comparatively low temperature of about 200-400 degreeC, and the restraining board 1 can be manufactured at low cost. Become.

以下、実施例を挙げて本発明をより具体的に説明するが、本発明はもとより下記実施例によって制限を受けるものではなく、本発明の趣旨に適合し得る範囲で適宜変更を加えて実施することも可能であり、それらは何れも本発明の技術的範囲に含まれる。   EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited by the following examples, and the present invention is implemented with appropriate modifications within a range that can meet the gist of the present invention. These are all included in the technical scope of the present invention.

本実施例では、図7に示す断面形状の抑え板を製造し、その抑え板の平坦度を確認した。抑え板の製造に用いる素材としては、板厚が2.5mmのアルミニウム合金(5052−H34)を用い、加工或いは冷間鍛造を施して、取付孔と、中間部の凸状面と凹状面を形成した後に、その円板を複数枚積層して、それら円板の板厚方向に加圧焼鈍することで、抑え板を製造した。   In the present example, a pressing plate having a cross-sectional shape shown in FIG. 7 was manufactured, and the flatness of the pressing plate was confirmed. As a material used for manufacturing the restraining plate, an aluminum alloy (5052-H34) having a thickness of 2.5 mm is used, and processing or cold forging is performed, so that the mounting hole, the convex surface and the concave surface of the intermediate portion are formed. After the formation, a plurality of the discs were stacked, and a pressure plate was manufactured by pressure annealing in the thickness direction of the discs.

また、加圧焼鈍は、図8に示すように、シャフトAに、20枚ずつの円板を積層したブロックBと、厚さ25mm、平坦度3μmのスペーサーCを交互に通し、締め付け荷重19.6×10Pa(2.0kg/cm)、焼鈍温度320℃、焼鈍時間2時間の条件により実施した。 In addition, as shown in FIG. 8, the pressure annealing is performed by alternately passing a block B in which 20 discs are stacked on the shaft A and a spacer C having a thickness of 25 mm and a flatness of 3 μm. The test was performed under the conditions of 6 × 10 4 Pa (2.0 kg / cm 2 ), annealing temperature of 320 ° C., and annealing time of 2 hours.

この加圧焼鈍終了後、ブロックBから製造を終了した抑え板を、解載、剥離することで取り出し、全ての抑え板の平坦度、反りの有無を確認したところ、回転体の抑え板として用いるには問題となるような反りは全く発生しておらず、回転体の抑え板として用いるには十分な平坦度であることを確認した。   After completion of this pressure annealing, the control plate that has been manufactured from the block B is taken out by mounting and peeling, and the flatness of all the control plates and the presence or absence of warpage are confirmed. It was confirmed that there was no warping that would cause a problem, and that the flatness was sufficient for use as a holding plate for a rotating body.

1…抑え板
2…円板
3…取付孔周辺部
3a…平坦面
4…中間部
4a…凸状面
4b…凹状面
4c…***部分
5…外縁部
5a…平坦面
5b…面取り部
6…取付孔
6a…係止溝
7…段差
7a…凸側斜面
7b…凹側斜面
8…回転体
9…空間
DESCRIPTION OF SYMBOLS 1 ... Holding plate 2 ... Disc 3 ... Mounting hole peripheral part 3a ... Flat surface 4 ... Intermediate | middle part 4a ... Convex surface 4b ... Concave surface 4c ... Raised part 5 ... Outer edge part 5a ... Flat surface 5b ... Chamfering part 6 ... Installation Hole 6a ... Locking groove 7 ... Step 7a ... Convex side slope 7b ... Concave side slope 8 ... Rotating body 9 ... Space

Claims (5)

回転軸が挿通される取付孔が中心に形成され前記回転軸と一体となって回転すると共に、その一側面側に配置される回転体に接触してその回転体に拘束力を加える円板よりなる回転体の抑え板であって、
前記円板は、前記回転体に接触する平坦面を有する取付孔周辺部と、その取付孔周辺部の外周側に段差を介して連続し前記回転体には接触しない中間部と、その中間部の外周側に段差を介して連続し前記回転体に接触する平坦面を有する外縁部とよりなる断面凹凸状の同心円形状に形成されており、
前記中間部の、前記回転体が配置される側とは反対側の面に形成された凸状面が、前記回転体が配置される側の面に形成された凹状面の、前記円板の径方向に収まる範囲内に形成されていることを特徴とする回転体の抑え板。
From a disk that is formed around the mounting hole through which the rotating shaft is inserted, rotates together with the rotating shaft, and contacts the rotating body arranged on one side surface thereof and applies a restraining force to the rotating body A rotating plate holding plate,
The disc includes a peripheral part of the mounting hole having a flat surface that contacts the rotating body, an intermediate part that continues to the outer peripheral side of the peripheral part of the mounting hole via a step and does not contact the rotating body, and an intermediate part thereof Is formed in a concentric circular shape with a concavo-convex shape composed of an outer edge portion having a flat surface which is continuous on the outer peripheral side through a step and contacts the rotating body,
The convex surface formed on the surface of the intermediate portion on the side opposite to the side on which the rotating body is disposed is a concave surface formed on the surface on the side on which the rotating body is disposed. A retainer plate for a rotating body, which is formed within a range that can be accommodated in a radial direction.
前記凸状面の内側に形成された***部分と、前記凹状面で囲まれた空間の、前記円板径方向における夫々の断面が、前記回転体側を広幅とする同面積の台形状であることを特徴とする請求項1記載の回転体の抑え板。   Each of the cross sections in the radial direction of the disk of the raised portion formed inside the convex surface and the space surrounded by the concave surface has a trapezoidal shape with the same area with the rotating body side wide. The pressing plate for a rotating body according to claim 1. 前記円板の回転軸方向の厚みは、少なくとも前記外縁部の最外周側を除いて全て均一の厚みであることを特徴とする請求項1または2記載の回転体の抑え板。   3. The restraining plate for a rotating body according to claim 1, wherein the thickness of the disc in the rotation axis direction is uniform all except at least the outermost peripheral side of the outer edge portion. 前記円板はモータのエンドプレートであって、前記回転体は積層されたモータのロータコアであることを特徴とする請求項1乃至3のいずれかに記載の回転体の抑え板。   4. The rotating body restraining plate according to claim 1, wherein the disk is an end plate of a motor, and the rotating body is a rotor core of a stacked motor. 請求項1乃至4のいずれかに記載の回転体の抑え板の製造方法であって、
冷間圧延材でなる素材円板に、プレス加工或いは冷間鍛造を施して、前記取付孔と、前記中間部の凸状面と凹状面を形成した後に、
前記円板を複数枚積層して、それら円板の板厚方向に加圧焼鈍することで、製造されることを特徴とする回転体の抑え板の製造方法。
It is a manufacturing method of the control board of the rotating body according to any one of claims 1 to 4,
After subjecting the material disk made of cold rolled material to press working or cold forging, forming the mounting hole and the convex surface and concave surface of the intermediate part,
A method for manufacturing a rotating member restraining plate, wherein a plurality of the discs are stacked and subjected to pressure annealing in the thickness direction of the discs.
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