JP2021035282A - Ring-shaped stator structure - Google Patents

Ring-shaped stator structure Download PDF

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JP2021035282A
JP2021035282A JP2019156475A JP2019156475A JP2021035282A JP 2021035282 A JP2021035282 A JP 2021035282A JP 2019156475 A JP2019156475 A JP 2019156475A JP 2019156475 A JP2019156475 A JP 2019156475A JP 2021035282 A JP2021035282 A JP 2021035282A
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Prior art keywords
ring
shaped stator
shaped
outer diameter
recess
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JP2019156475A
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優希 本宮
Yuki Motomiya
優希 本宮
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Tamagawa Seiki Co Ltd
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Tamagawa Seiki Co Ltd
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Abstract

To provide a ring-shaped stator structure that allows a ring-shaped stator to be smoothly fitted inside a ring-shaped housing.SOLUTION: A ring-shaped stator structure according to the present invention includes a ring-shaped stator (11), a plurality of elongated holes (10) formed on an outer edge (11A) of the ring-shaped stator (11), and a recess (20) formed in an outer diameter portion (14) of the ring-shaped stator (11) outside the elongated hole (10). A bulge (15) of the outer diameter portion (14) corresponding to the elongated hole (10) when the elongated hole (10) is formed is configured to be housed in the recess (20).SELECTED DRAWING: Figure 7

Description

本発明は、輪状ステータ構造に関し、特に、輪状ステータの外縁に長孔を形成した場合の外径部からの膨らみを凹部で吸収することにより、輪状ステータを輪状ハウジングの内周面に装着できるようにすることに関する。 The present invention relates to a ring-shaped stator structure, and in particular, the ring-shaped stator can be mounted on the inner peripheral surface of the ring-shaped housing by absorbing the bulge from the outer diameter portion when an elongated hole is formed on the outer edge of the ring-shaped stator. Regarding to do.

従来、用いられていたこの種の穴部を用いた輪状ロータあるいは輪状ステータとしては、図５から図７に示される構成を挙げることができる。
すなわち、参考として、図５のロータ構造は、特許文献１に開示された構成であり、ロータ軸１の外周２に対して、輪状ロータ４の内周面４ａが嵌合されている。
前記内周面４ａには、複数の凸部５が形成され、各凸部５に対応する外側には、長孔１０が形成されている。 Examples of the ring-shaped rotor or ring-shaped stator using this type of hole, which has been conventionally used, include the configurations shown in FIGS. 5 to 7.
That is, as a reference, the rotor structure of FIG. 5 has the configuration disclosed in Patent Document 1, and the inner peripheral surface 4a of the ring-shaped rotor 4 is fitted to the outer circumference 2 of the rotor shaft 1.
A plurality of convex portions 5 are formed on the inner peripheral surface 4a, and an elongated hole 10 is formed on the outer side corresponding to each convex portion 5.

また、文献には示されていないが、図６及び図７で部分的に示される輪状ステータの場合には、輪状ステータ１１に複数の長孔１０が形成された後に、輪状ステータ１１が輪状ハウジング１２の内周面１２Ａに嵌め込まれている。 Further, although not shown in the literature, in the case of the ring-shaped stator partially shown in FIGS. 6 and 7, after a plurality of elongated holes 10 are formed in the ring-shaped stator 11, the ring-shaped stator 11 is formed in the ring-shaped housing. It is fitted on the inner peripheral surface 12A of 12.

特開２０１６−３５４１５号公報Japanese Unexamined Patent Publication No. 2016-35415

従来の輪状ロータ及び輪状ステータは、以上のように構成されていたため、次のような課題が存在していた。
すなわち、図５で示される輪状ロータ４に長孔１０を形成した従来構成の場合、輪状ロータ４をロータ軸１に嵌合させる時に、凸部５が穴部１０に向けて外側に押されて変形することによって、輪状ロータ４の軸中心Ｐとロータ軸１の軸中心Ｐとが一致するように設けられているが、凸部５及び穴部１０の変形の状態にバラツキがあるため、輪状ロータ４とロータ軸１の軸中心Ｐを高精度に一致させることは困難であった。 Since the conventional ring-shaped rotor and ring-shaped stator are configured as described above, the following problems exist.
That is, in the case of the conventional configuration in which the elongated hole 10 is formed in the annular rotor 4 shown in FIG. 5, when the annular rotor 4 is fitted to the rotor shaft 1, the convex portion 5 is pushed outward toward the hole portion 10. By deforming, the shaft center P of the ring-shaped rotor 4 and the shaft center P of the rotor shaft 1 are provided so as to coincide with each other. It was difficult to match the shaft center P of the rotor 4 and the rotor shaft 1 with high accuracy.

また、前述の図６及び図７で示される他の従来構成の場合、前もって輪状ステータ１１に長孔１０をプレスで形成した後に、輪状ステータ１１を輪状ハウジング１２の内周面１２Ａに嵌め込む工程となるが、図７で示されるように、前述のように前もって、プレスで長孔１０を形成した時に、輪状ステータ１１の外径部１４に、点線で示されるような膨らみ１５が形成されることがある。
この場合には、長孔１０を形成後の輪状ステータ１１を輪状ハウジング１２の内周面１３内に嵌め込むことができず、不良品となるため、歩留りの向上が困難となっていた。 Further, in the case of the other conventional configurations shown in FIGS. 6 and 7 described above, a step of forming the elongated holes 10 in the ring-shaped stator 11 by pressing in advance and then fitting the ring-shaped stator 11 into the inner peripheral surface 12A of the ring-shaped housing 12. However, as shown in FIG. 7, when the elongated holes 10 are formed in advance by pressing as described above, the bulge 15 as shown by the dotted line is formed on the outer diameter portion 14 of the ring-shaped stator 11. Sometimes.
In this case, the ring-shaped stator 11 after forming the elongated hole 10 cannot be fitted into the inner peripheral surface 13 of the ring-shaped housing 12, resulting in a defective product, and thus it is difficult to improve the yield.

本発明は、以上のような課題を解決するためになされたもので、特に、輪状ステータの外縁に長孔を形成した場合の外径部からの膨らみを凹部で吸収することにより、輪状ステータを輪状ハウジングの内周面に確実かつ容易に装着できるようにすることを目的とする。 The present invention has been made to solve the above problems, and in particular, the ring-shaped stator can be formed by absorbing the bulge from the outer diameter portion when an elongated hole is formed on the outer edge of the ring-shaped stator in the recess. The purpose is to ensure that the ring-shaped housing can be securely and easily mounted on the inner peripheral surface.

本発明による輪状ステータ構造は、輪状ステータと、前記輪状ステータの外縁に複数個形成された長孔と、前記長孔の外側である前記輪状ステータの外径部に形成された凹部と、からなり、前記長孔を形成する時の前記長孔に対応する前記外径部の膨らみは、前記凹部内でおさめられているようにした構成であり、また、前記外径部に沿う前記凹部の凹部長さは、前記長孔の長孔長さよりも長く形成されている構成である。 The ring-shaped stator structure according to the present invention comprises a ring-shaped stator, a plurality of elongated holes formed on the outer edge of the ring-shaped stator, and recesses formed on the outer diameter portion of the ring-shaped stator outside the elongated holes. The bulge of the outer diameter portion corresponding to the elongated hole when the elongated hole is formed is configured to be contained in the concave portion, and the concave portion of the concave portion along the outer diameter portion. The portion length is configured to be longer than the elongated hole length of the elongated hole.

本発明による輪状ステータ構造は、以上のように構成されているため、次のような効果を得ることができる。すなわち、輪状ステータと、前記輪状ステータの外縁に複数個形成された長孔と、前記長孔の外側である前記輪状ステータの外径部に形成された凹部と、からなり、前記長孔を形成する時の前記長孔に対応する前記外径部の膨らみは、前記凹部内でおさめられているようにした構成からなることにより、前記膨らみは前記凹部内で吸収されるため、従来のように、膨らみが外径部から外側に膨らむことはなく、長孔形成後も、輪状ステータを輪状ハウジングの内周面の内側に嵌め込むことができる。
また、前記外径部に沿う前記凹部の凹部長さは、前記長孔の長孔長さよりも長く形成されていることにより、前記長孔を形成する時の膨らみは凹部内に完全に吸収され、外径部から外側に膨らむことはない。 Since the ring-shaped stator structure according to the present invention is configured as described above, the following effects can be obtained. That is, the elongated holes are formed of a ring-shaped stator, a plurality of elongated holes formed on the outer edge of the annular stator, and recesses formed on the outer diameter portion of the annular stator outside the elongated holes. Since the bulge of the outer diameter portion corresponding to the elongated hole is configured to be contained in the recess, the bulge is absorbed in the recess, as in the conventional case. The bulge does not bulge outward from the outer diameter portion, and the ring-shaped stator can be fitted inside the inner peripheral surface of the ring-shaped housing even after the elongated hole is formed.
Further, since the concave length of the concave portion along the outer diameter portion is formed longer than the elongated hole length of the elongated hole, the bulge when forming the elongated hole is completely absorbed in the concave portion. , It does not bulge outward from the outer diameter.

本発明の実施の形態による輪状ステータ構造の全体構成を示す平面図である。It is a top view which shows the whole structure of the ring-shaped stator structure by embodiment of this invention. 図１の裏面図である。It is a back view of FIG. 図１の左側面図である。It is a left side view of FIG. 図１及び図２のＣ部の拡大図である。It is an enlarged view of the part C of FIG. 1 and FIG. 従来の長孔である穴部を有する輪状ロータを示す平面図である。It is a top view which shows the ring-shaped rotor which has the hole part which is a conventional long hole. 従来の輪状ステータに形成された長孔と輪状ハウジングとの関係を示す要部の平面図である。It is a top view of the main part which shows the relationship between the elongated hole formed in the conventional ring-shaped stator and a ring-shaped housing. 従来の輪状ステータの長孔をプレス加工した時の膨らみを示す要部の平面図である。It is a top view of the main part which shows the bulge when the long hole of the conventional ring-shaped stator is pressed.

本発明による輪状ステータ構造は、輪状ステータの外縁に長孔を形成した場合の外径部からの膨らみを凹部で吸収することにより、輪状ステータを輪状ハウジングの内周面に装着できるようにすることである。 The ring-shaped stator structure according to the present invention makes it possible to mount the ring-shaped stator on the inner peripheral surface of the ring-shaped housing by absorbing the bulge from the outer diameter portion when an elongated hole is formed on the outer edge of the ring-shaped stator at the recess. Is.

以下、図面と共に本発明による輪状ステータ構造の好適な実施の形態について説明する。
尚、従来例と同一又は同等部分には、同一符号を付して説明する。
図１において符号１１で示されるものは、レゾルバを構成するための輪状ステータであり、この輪状ステータ１１の外縁１１Ａには、この輪状ステータ１１を図示しないモータ等の他部材にボルト止めするための複数の長孔１０がプレス加工によって前もって形成されている。 Hereinafter, preferred embodiments of the ring-shaped stator structure according to the present invention will be described with reference to the drawings.
The same or equivalent parts as those of the conventional example will be described with the same reference numerals.
Reference numeral 11 in FIG. 1 is a ring-shaped stator for forming a resolver, and the ring-shaped stator 11 is bolted to another member such as a motor (not shown) on the outer edge 11A of the ring-shaped stator 11. A plurality of elongated holes 10 are formed in advance by press working.

前記輪状ステータ１１の外径部１４には、図４で示される凹部２０が設けられることによって、従来、発生していたような前記膨らみ１５が発生しないように構成されている。
すなわち、図４は、図１又は図２のＣ部の拡大図であり、輪状ステータ１１の外縁２１の外径部１４には前記凹部２０が形成されている。
図４に示す通り、凹部２０は、外径部１４に対して点線にて示される位置に対して形成されている。 The outer diameter portion 14 of the ring-shaped stator 11 is provided with the recess 20 shown in FIG. 4 so that the bulge 15 that has conventionally occurred does not occur.
That is, FIG. 4 is an enlarged view of the C portion of FIG. 1 or 2, and the recess 20 is formed in the outer diameter portion 14 of the outer edge 21 of the ring-shaped stator 11.
As shown in FIG. 4, the recess 20 is formed at a position indicated by a dotted line with respect to the outer diameter portion 14.

従って、図４では、輪状ステータ１１に対して、すでに長孔１０が形成されている状態が示されているが、輪状ステータ１１の外径部１４には、凹部２０のみがすでに形成されていて、この状態で、プレス加工により長孔１０を形成している。
図４は、理解を容易とするために、凹部２０の形状を、見やすくするために過大に大きく表現しているが、実際には、０．１〜０．３ミリ程度の膨らみ１５（図７で示す）が凹部２０に発生するだけであるため、プレス加工時に凹部２０が点線すなわち外径部１４を越えて膨らむことはない。 Therefore, FIG. 4 shows a state in which the elongated hole 10 is already formed in the ring-shaped stator 11, but only the recess 20 is already formed in the outer diameter portion 14 of the ring-shaped stator 11. In this state, the elongated holes 10 are formed by press working.
In FIG. 4, the shape of the recess 20 is oversized to make it easier to see for easy understanding, but in reality, the bulge 15 of about 0.1 to 0.3 mm (FIG. 7). (Indicated by) only occurs in the recess 20, so that the recess 20 does not bulge beyond the dotted line, that is, the outer diameter portion 14 during press working.

外径部１４に沿う凹部２０の凹部長さＬ１は、長孔１０の長孔長さＬ２よりも長く形成されている。これにより、長孔１０を形成する時の膨らみ１５は凹部２０内に完全に吸収され、外径部１４から外側に膨らむことはない。 The recess length L 1 of the recess 20 along the outer diameter portion 14 is formed to be longer than the elongated hole length L 2 of the elongated hole 10. As a result, the bulge 15 when forming the elongated hole 10 is completely absorbed in the recess 20 and does not bulge outward from the outer diameter portion 14.

前述のように長孔１０が形成された輪状ステータ１１の外径部１４は、輪状ハウジング１２の内周面１２Ａの内側に対して、輪状ステータ１１の外径部１４を、何らの障害もなく嵌め込むことができる。
尚、図１及び図２においては、輪状ステータ１１の内側で８Ｘ（軸倍率）のロータ３０が回転自在に設けられているが、ロータ３０と輪状ステータ１１と輪状ハウジング１２の軸中心Ｐは互いに一致するように構成されている。 The outer diameter portion 14 of the ring-shaped stator 11 in which the elongated hole 10 is formed as described above has the outer diameter portion 14 of the ring-shaped stator 11 with respect to the inside of the inner peripheral surface 12A of the ring-shaped housing 12 without any obstacle. Can be fitted.
In FIGS. 1 and 2, a rotor 30 having an 8X (axial magnification) is rotatably provided inside the ring-shaped stator 11, but the rotor 30, the ring-shaped stator 11, and the shaft centers P of the ring-shaped housing 12 are mutually located. It is configured to match.

本発明による輪状ステータ構造は、輪状ステータの外径部１４に形成された凹部によって、プレス加工時に発生する膨らみを逃がすことができ、完成後の輪状ステータ１１を輪状ハウジングの内側に確実に円滑に嵌め込むことができる。
そのため、レゾルバとしての検出精度を向上させることができる。 In the ring-shaped stator structure according to the present invention, the recess formed in the outer diameter portion 14 of the ring-shaped stator allows the bulge generated during press working to escape, and the finished ring-shaped stator 11 can be reliably and smoothly placed inside the ring-shaped housing. Can be fitted.
Therefore, the detection accuracy as a resolver can be improved.

１０ 長孔
１１ 輪状ステータ
１１Ａ 外縁
１２ 輪状ハウジング
１２Ａ 内周面
１４ 外径部
１５ 膨らみ
２０ 凹部
２１ 外縁
３０ ロータ
Ｌ１ 凹部長さ
Ｌ２ 長孔長さ
Ｐ 軸中心 10 Long hole 11 Ring-shaped stator 11A Outer edge 12 Ring-shaped housing 12A Inner peripheral surface 14 Outer diameter part 15 Bulge 20 Recess 21 Outer edge 30 Rotor L 1 Recess length L 2 Long hole length P-axis center

Claims (2)

輪状ステータ(１１)と、前記輪状ステータ(１１)の外縁(１１Ａ)に複数個形成された長孔(１０)と、前記長孔(１０)の外側である前記輪状ステータ(１１)の外径部(１４)に形成された凹部(２０)と、からなり、
前記長孔(１０)を形成する時の前記長孔(１０)に対応する前記外径部(１４)の膨らみ(１５)は、前記凹部(２０)内でおさめられているようにした構成からなる輪状ステータ構造。 The ring-shaped stator (11), a plurality of elongated holes (10) formed in the outer edge (11A) of the ring-shaped stator (11), and the outer diameter of the ring-shaped stator (11) outside the elongated holes (10). It consists of a recess (20) formed in the portion (14) and
The bulge (15) of the outer diameter portion (14) corresponding to the elongated hole (10) when the elongated hole (10) is formed is configured to be contained in the recess (20). Ring-shaped stator structure. 前記外径部(１４)に沿う前記凹部(２０)の凹部長さ(Ｌ１)は、前記長孔(１０)の長孔長さ(Ｌ２)よりも長く形成されている構成からなる請求項１記載の輪状ステータ構造。 A claim having a structure in which the recess length (L 1 ) of the recess (20) along the outer diameter portion (14) is formed longer than the slot length (L 2 ) of the slot (10). Item 1. The ring-shaped stator structure according to item 1.
JP2019156475A 2019-08-29 2019-08-29 Ring-shaped stator structure Pending JP2021035282A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005176426A (en) * 2003-12-08 2005-06-30 Tamagawa Seiki Co Ltd Resolver stator structure
JP2019054561A (en) * 2017-09-12 2019-04-04 ミネベアミツミ株式会社 Stator structure and resolver

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005176426A (en) * 2003-12-08 2005-06-30 Tamagawa Seiki Co Ltd Resolver stator structure
JP2019054561A (en) * 2017-09-12 2019-04-04 ミネベアミツミ株式会社 Stator structure and resolver

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