JP2010032291A - Resolver stator structure - Google Patents

Resolver stator structure Download PDF

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JP2010032291A
JP2010032291A JP2008193220A JP2008193220A JP2010032291A JP 2010032291 A JP2010032291 A JP 2010032291A JP 2008193220 A JP2008193220 A JP 2008193220A JP 2008193220 A JP2008193220 A JP 2008193220A JP 2010032291 A JP2010032291 A JP 2010032291A
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thermistor
detection terminal
stator structure
temperature detection
resolver stator
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JP5150840B2 (en
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Masafumi Fujimoto
雅文 藤本
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Tamagawa Seiki Co Ltd
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Tamagawa Seiki Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a conventional resolver stator structure has required a separate temperature sensor provided in the vicinity of an object to be detected to increase the number of operations since the conventional resolver stator structure has not had a function as a temperature sensor. <P>SOLUTION: In a resolver stator structure, a terminal holding part 31 is provided with a pair of terminal pins 10 for temperature detection, and a thermistor 11 is connected between the terminal pins 10 for temperature detection. A voltage is applied between the terminal pins 10 for temperature detection to measure a resistance value of the thermistor 11. The temperature of the thermistor 11 is detected on the basis of the measured resistance value of the thermistor 11. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、レゾルバステータ構造に関し、特に、端子保持部に設けられた一対の温度検出用端子ピン間にサーミスタを接続し、前記サーミスタの抵抗値に基づいてサーミスタの温度を検出可能とすることで、温度センサとしての機能をレゾルバに付加でき、温度センサを別個に設ける必要性をなくすことができるようにするための新規な改良に関するものである。   The present invention relates to a resolver stator structure, and in particular, by connecting a thermistor between a pair of temperature detection terminal pins provided in a terminal holding portion, and making it possible to detect the temperature of the thermistor based on the resistance value of the thermistor. The present invention relates to a novel improvement for adding a function as a temperature sensor to a resolver and eliminating the need for a separate temperature sensor.

従来用いられていたこの種のレゾルバステータ構造としては、例えば特許文献１等に示されているレゾルバステータ構造が用いられている。図６は、従来のレゾルバステータ構造を示す正面図である。図において、輪状ステータ鉄心１には、周方向Ａに互いに間隔をおいて複数の磁極２が設けられており、これらの磁極２には、輪状絶縁カバー３を介してステータ巻線４が巻回されている。前記輪状絶縁カバー３は、前記輪状ステータ鉄心１に沿って設けられた輪状基部３０と、この輪状基部３０の一端から径方向Ｂに突出した端子保持部３１とを有している。前記端子保持部３１には、インサート成型により複数の角度検出用端子ピン５が一体に設けられている。図示はしないが、各角度検出用端子ピン５には、前記ステータ巻線４の一端が接続されている。そして、外部からの励磁信号（ｓｉｎωｔ）が前記角度検出用端子ピン５を介して前記ステータ巻線４に入力され、ロータ６の回転角度に応じた回転角度信号（ｓｉｎ相信号：ｓｉｎθ・ｓｉｎωｔ、及びｃｏｓ相信号：ｃｏｓθ・ｓｉｎωｔ）が前記角度検出用端子ピン５を介して外部に出力される。   As this type of resolver stator structure conventionally used, for example, a resolver stator structure shown in Patent Document 1 is used. FIG. 6 is a front view showing a conventional resolver stator structure. In the figure, a ring-shaped stator core 1 is provided with a plurality of magnetic poles 2 spaced apart from each other in the circumferential direction A, and a stator winding 4 is wound around these magnetic poles 2 via a ring-shaped insulating cover 3. Has been. The ring-shaped insulating cover 3 includes a ring-shaped base portion 30 provided along the ring-shaped stator core 1 and a terminal holding portion 31 protruding in the radial direction B from one end of the ring-shaped base portion 30. The terminal holding part 31 is integrally provided with a plurality of angle detection terminal pins 5 by insert molding. Although not shown, one end of the stator winding 4 is connected to each angle detection terminal pin 5. Then, an external excitation signal (sin ωt) is input to the stator winding 4 via the angle detection terminal pin 5 and a rotation angle signal (sin phase signal: sin θ · sin ωt, And the cos phase signal: cos θ · sin ωt) are output to the outside via the angle detection terminal pin 5.

特開２００８−９９５１９号公報JP 2008-99519 A

上記のような従来のレゾルバステータ構造では、前記回転角度信号に基づいて検出対象の回転角度を検出できるが、前記検出対象の温度を検出することはできない。従って、前記検出対象の温度を監視するためには、前記検出対象の近傍に温度センサを別個に設ける必要があり、作業数が増えてしまう。   In the conventional resolver stator structure as described above, the rotation angle of the detection target can be detected based on the rotation angle signal, but the temperature of the detection target cannot be detected. Therefore, in order to monitor the temperature of the detection target, it is necessary to separately provide a temperature sensor near the detection target, which increases the number of operations.

本発明は、上記のような課題を解決するためになされたものであり、その目的は、温度センサとしての機能をレゾルバに付加でき、温度センサを別個に設ける必要性をなくすことができるレゾルバステータ構造を提供することである。   The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide a resolver stator in which a function as a temperature sensor can be added to the resolver, and the need to separately provide the temperature sensor can be eliminated. Is to provide a structure.

本発明に係るレゾルバステータ構造は、輪状ステータ鉄心の各磁極に輪状絶縁カバーを介してステータ巻線が巻回され、前記輪状絶縁カバーの一端に設けられた端子保持部の各角度検出用端子ピンに前記ステータ巻線の一端が接続されるレゾルバステータ構造であって、前記端子保持部に設けられた一対の温度検出用端子ピンと、前記温度検出用端子ピン間に接続されたサーミスタとを備え、前記温度検出用端子ピン間に電圧が印加されることで前記サーミスタの抵抗値が計測され、前記サーミスタの前記抵抗値に基づいて前記サーミスタの温度が検出される。
また、前記温度検出用端子ピン及び前記サーミスタを一体に保持するサーミスタホルダをさらに備え、前記温度検出用端子ピン及び前記サーミスタが、前記端子保持部に設けられた取付け開口部に対して、前記サーミスタホルダによって着脱可能とされている。
また、前記サーミスタホルダの両側の側面から突出された一対の突部と、前記取付け開口部の両側の側面に設けられた一対のガイド溝とをさらに備え、前記取付け開口部に対する前記サーミスタホルダの挿入が前記突部及び前記ガイド溝によって案内され、前記突部が前記ガイド溝に融着されることで前記サーミスタホルダが前記端子保持部に固定される。 In the resolver stator structure according to the present invention, a stator winding is wound around each magnetic pole of a ring-shaped stator core via a ring-shaped insulating cover, and each angle detecting terminal pin of a terminal holding portion provided at one end of the ring-shaped insulating cover. A resolver stator structure to which one end of the stator winding is connected, comprising a pair of temperature detection terminal pins provided in the terminal holding portion, and a thermistor connected between the temperature detection terminal pins, The resistance value of the thermistor is measured by applying a voltage between the temperature detection terminal pins, and the temperature of the thermistor is detected based on the resistance value of the thermistor.
The temperature detection terminal pin and the thermistor may further comprise a thermistor holder that integrally holds the temperature detection terminal pin and the thermistor with respect to the mounting opening provided in the terminal holding portion. The holder can be attached and detached.
The thermistor holder further includes a pair of protrusions protruding from both side surfaces of the thermistor holder, and a pair of guide grooves provided on both side surfaces of the mounting opening, and inserting the thermistor holder into the mounting opening. Is guided by the projection and the guide groove, and the projection is fused to the guide groove, whereby the thermistor holder is fixed to the terminal holding portion.

本発明のレゾルバステータ構造によれば、前記温度検出用端子ピン間に電圧が印加されることで前記サーミスタの抵抗値が計測され、前記サーミスタの前記抵抗値に基づいて前記サーミスタの温度が検出されるので、温度センサとしての機能をレゾルバに付加でき、温度センサを別個に設ける必要性をなくすことができる。
また、前記温度検出用端子ピン及び前記サーミスタが、前記端子保持部に設けられた取付け開口部に対して、前記サーミスタホルダによって着脱可能とされているので、温度センサとしての機能が必要か否かに応じてサーミスタホルダを取り付けるか否かを任意に選択でき、利用者のニーズに柔軟に対応できる。
また、前記取付け開口部に対する前記サーミスタホルダの挿入が前記突部及び前記ガイド溝によって案内され、前記突部が前記ガイド溝に融着されることで前記サーミスタホルダが前記端子保持部に固定されるので、温度センサとしての機能の付加を容易に行うことができ、利便性を向上できる。 According to the resolver stator structure of the present invention, the resistance value of the thermistor is measured by applying a voltage between the temperature detection terminal pins, and the temperature of the thermistor is detected based on the resistance value of the thermistor. Therefore, the function as a temperature sensor can be added to the resolver, and the necessity of providing a temperature sensor separately can be eliminated.
In addition, since the temperature detection terminal pin and the thermistor can be attached to and detached from the mounting opening provided in the terminal holding portion by the thermistor holder, whether or not a function as a temperature sensor is necessary. Whether or not the thermistor holder is attached can be arbitrarily selected according to the user's needs, and the user's needs can be flexibly dealt with.
The insertion of the thermistor holder into the mounting opening is guided by the protrusion and the guide groove, and the protrusion is fused to the guide groove, whereby the thermistor holder is fixed to the terminal holding part. Therefore, a function as a temperature sensor can be easily added, and convenience can be improved.

以下、本発明を実施するための最良の形態について、図面を参照して説明する。
実施の形態１．
図１は本発明の実施の形態１によるレゾルバステータ構造を示す正面図であり、図２は図１のレゾルバステータ構造を示す背面図であり、図３は図２のレゾルバステータ構造を示す上面図である。なお、従来のレゾルバステータ構造と同一又は同等部分については同一の符号を用いて説明する。図１及び図２に示すように、輪状ステータ鉄心１には、周方向Ａに互いに間隔をおいて複数の磁極２が設けられており、これらの磁極２には、輪状絶縁カバー３を介してステータ巻線４が巻回されている。前記輪状絶縁カバー３には、前記輪状ステータ鉄心１に沿う輪状基部３０と、この輪状基部３０の一端から径方向Ｂに突出した端子保持部３１とが設けられている。 The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a front view showing a resolver stator structure according to Embodiment 1 of the present invention, FIG. 2 is a rear view showing the resolver stator structure of FIG. 1, and FIG. 3 is a top view showing the resolver stator structure of FIG. It is. The same or equivalent parts as those of the conventional resolver stator structure will be described using the same reference numerals. As shown in FIGS. 1 and 2, the annular stator core 1 is provided with a plurality of magnetic poles 2 spaced apart from each other in the circumferential direction A, and these magnetic poles 2 are interposed via an annular insulating cover 3. The stator winding 4 is wound. The ring-shaped insulating cover 3 is provided with a ring-shaped base 30 that extends along the ring-shaped stator core 1 and a terminal holding portion 31 that protrudes in the radial direction B from one end of the ring-shaped base 30.

図３に示すように、前記端子保持部３１には、複数の角度検出用端子ピン５と、一対の温度検出用端子ピン１０とが設けられている。各角度検出用端子ピン５は、インサート成形により前記端子保持部３１に一体に設けられており、前記輪状ステータ鉄心１の軸方向Ｃに沿って前記端子保持部３１の第１及び第２端面３１ａ，３１ｂから突出されている。具体的には図示しないが、前記第１端面３１ａ側（正面側）において、前記ステータ巻線４の一端が各角度検出用端子ピン５に接続されている。各角度検出用端子ピン５の一端には、前記ステータ巻線４の一端が各角度検出用端子ピン５に絡げられて溶接されることで形成された球状の溶接部５ａが設けられている。また、各角度検出用端子ピン５には、前記第２端面３１ｂ側（背面側）において、図示しない入出力配線が接続される。すなわち、前記入出力配線と前記角度検出用端子ピン５とを介して、外部からの励磁信号（ｓｉｎωｔ）が前記ステータ巻線４に入力されるとともに、ロータ６（図１参照）の回転角度に応じた回転角度信号（ｓｉｎ相信号：ｓｉｎθ・ｓｉｎωｔ、及びｃｏｓ相信号：ｃｏｓθ・ｓｉｎωｔ）が外部に出力される。   As shown in FIG. 3, the terminal holding portion 31 is provided with a plurality of angle detection terminal pins 5 and a pair of temperature detection terminal pins 10. Each angle detection terminal pin 5 is provided integrally with the terminal holding portion 31 by insert molding, and the first and second end faces 31a of the terminal holding portion 31 along the axial direction C of the annular stator core 1 are provided. , 31b. Although not specifically shown, one end of the stator winding 4 is connected to each angle detection terminal pin 5 on the first end face 31a side (front side). One end of each angle detection terminal pin 5 is provided with a spherical welded portion 5a formed by welding one end of the stator winding 4 entangled with each angle detection terminal pin 5. . Further, an input / output wiring (not shown) is connected to each angle detection terminal pin 5 on the second end face 31b side (back side). That is, an external excitation signal (sin ωt) is input to the stator winding 4 via the input / output wiring and the angle detection terminal pin 5, and at the rotational angle of the rotor 6 (see FIG. 1). The corresponding rotation angle signals (sin phase signal: sin θ · sin ωt and cos phase signal: cos θ · sin ωt) are output to the outside.

各温度検出用端子ピン１０間には、前記第１端面３１ａ側においてサーミスタ１１が接続されており、このサーミスタ１１は、モールド樹脂１２により覆われている。また、各温度検出用端子ピン１０には、前記第２端面３１ｂ側において、図示しない入出力配線が接続される。ここで、サーミスタ１１は、温度に応じて抵抗値が変化する抵抗体である。従って、前記温度検出用端子ピン１０間に電圧を印加することで前記サーミスタ１１の抵抗値を計測し、この計測されたサーミスタ１１の前記抵抗値に基づいて前記サーミスタ１１の温度を検出できる。これにより、例えばモータ等のレゾルバが取り付けられた検出対象の温度を前記サーミスタ１１の温度に基づいて検出でき、温度センサを別個に設ける必要性を無くすことができる。すなわち、温度センサとしての機能がレゾルバに付加される。   A thermistor 11 is connected between the temperature detection terminal pins 10 on the first end face 31 a side, and the thermistor 11 is covered with a mold resin 12. Further, an input / output wiring (not shown) is connected to each temperature detection terminal pin 10 on the second end face 31b side. Here, the thermistor 11 is a resistor whose resistance value changes according to temperature. Accordingly, the resistance value of the thermistor 11 is measured by applying a voltage between the temperature detection terminal pins 10, and the temperature of the thermistor 11 can be detected based on the measured resistance value of the thermistor 11. Thereby, for example, the temperature of the detection target to which a resolver such as a motor is attached can be detected based on the temperature of the thermistor 11, and the need for providing a temperature sensor separately can be eliminated. That is, a function as a temperature sensor is added to the resolver.

次に、図４は、図１の線ＩＶ−ＩＶに沿う断面図であり、図５は、図４のサーミスタホルダ１３を示す正面図である。図４に示すように、前記端子保持部３１には、第１端面３１ａから第２端面３１ｂまで貫通された取付け開口部３２が設けられており、この取付け開口部３２には、断面Ｌ字状の樹脂で形成されたサーミスタホルダ１３が挿通されている。このサーミスタホルダ１３は、図５に示すように、前記温度検出用端子ピン１０及び前記サーミスタ１１を一体に保持するものであり、これら温度検出用端子ピン１０及びサーミスタ１１を前記取付け開口部３２に対して着脱可能とするものである。これにより、温度センサとしての機能が必要か否かに応じてサーミスタホルダ１３を取り付けるか否かを任意に選択でき、利用者のニーズに柔軟に対応できる。   4 is a sectional view taken along line IV-IV in FIG. 1, and FIG. 5 is a front view showing the thermistor holder 13 in FIG. As shown in FIG. 4, the terminal holding part 31 is provided with an attachment opening 32 penetrating from the first end face 31a to the second end face 31b. The attachment opening 32 has an L-shaped cross section. A thermistor holder 13 made of the above resin is inserted. As shown in FIG. 5, the thermistor holder 13 integrally holds the temperature detection terminal pin 10 and the thermistor 11. The temperature detection terminal pin 10 and the thermistor 11 are attached to the mounting opening 32. On the other hand, it is detachable. Accordingly, whether or not the thermistor holder 13 is attached can be arbitrarily selected according to whether or not a function as a temperature sensor is necessary, and the user's needs can be flexibly handled.

前記サーミスタホルダ１３には、図５に示すように、両側の側面１３ａから突出された一対の突部１４が設けられている。図１に戻り、前記取付け開口部３２には、両側の側面３２ａに前記輪状ステータ鉄心１の軸方向に沿って延在された一対のガイド溝３３が設けられている。前記取付け開口部３２に対する前記サーミスタホルダ１３の挿入は、これら突部１４及びガイド溝３３によって案内される。そして、前記サーミスタホルダ１３が前記取付け開口部３２に挿入された後に、例えば超音波溶融治具等により前記突部１４が前記ガイド溝３３に融着されることで、前記サーミスタホルダ１３が前記端子保持部３１に固定される。これにより、温度センサとしての機能の付加を容易に行うことができ、利便性を向上できる。   As shown in FIG. 5, the thermistor holder 13 is provided with a pair of protrusions 14 protruding from the side surfaces 13a on both sides. Returning to FIG. 1, the mounting opening 32 is provided with a pair of guide grooves 33 extending along the axial direction of the annular stator core 1 on both side surfaces 32 a. Insertion of the thermistor holder 13 into the mounting opening 32 is guided by the protrusion 14 and the guide groove 33. Then, after the thermistor holder 13 is inserted into the mounting opening 32, the projection 14 is fused to the guide groove 33 by, for example, an ultrasonic melting jig or the like, so that the thermistor holder 13 is connected to the terminal. It is fixed to the holding part 31. Thereby, the function as a temperature sensor can be easily added, and the convenience can be improved.

本発明の実施の形態１によるレゾルバステータ構造を示す正面図である。It is a front view which shows the resolver stator structure by Embodiment 1 of this invention. 図１のレゾルバステータ構造を示す背面図である。It is a rear view which shows the resolver stator structure of FIG. 図２のレゾルバステータ構造を示す上面図である。It is a top view which shows the resolver stator structure of FIG. 図１の線ＩＶ−ＩＶに沿う断面図である。It is sectional drawing which follows the line IV-IV of FIG. 図４のサーミスタホルダを示す正面図である。It is a front view which shows the thermistor holder of FIG. 従来のレゾルバステータ構造を示す正面図である。It is a front view which shows the conventional resolver stator structure.

符号の説明Explanation of symbols

１ 輪状ステータ鉄心
２ 磁極
３ 輪状絶縁カバー
４ ステータ巻線
５ 角度検出用端子ピン
１０ 温度検出用端子ピン
１１ サーミスタ
１３ サーミスタホルダ
１４ 突部
３１ 端子保持部
３２ 取付け開口部
３３ ガイド溝 DESCRIPTION OF SYMBOLS 1 Ring-shaped stator iron core 2 Magnetic pole 3 Ring-shaped insulation cover 4 Stator winding 5 Angle detection terminal pin 10 Temperature detection terminal pin 11 Thermistor 13 Thermistor holder 14 Protrusion 31 Terminal holding part 32 Mounting opening 33 Guide groove

Claims (3)

輪状ステータ鉄心（１）の各磁極（２）に輪状絶縁カバー（３）を介してステータ巻線（４）が巻回され、前記輪状絶縁カバー（３）の一端に設けられた端子保持部（３１）の各角度検出用端子ピン（５）に前記ステータ巻線（４）の一端が接続されるレゾルバステータ構造であって、
前記端子保持部（３１）に設けられた一対の温度検出用端子ピン（１０）と、
前記温度検出用端子ピン（１０）間に接続されたサーミスタ（１１）と
を備え、
前記温度検出用端子ピン（１０）間に電圧が印加されることで前記サーミスタ（１１）の抵抗値が計測され、前記サーミスタ（１１）の前記抵抗値に基づいて前記サーミスタ（１１）の温度が検出されることを特徴とするレゾルバステータ構造。 A stator winding (4) is wound around each magnetic pole (2) of the annular stator iron core (1) via an annular insulating cover (3), and a terminal holding portion (provided at one end of the annular insulating cover (3) ( 31) a resolver stator structure in which one end of the stator winding (4) is connected to each angle detection terminal pin (5) of 31),
A pair of temperature detection terminal pins (10) provided in the terminal holding portion (31);
A thermistor (11) connected between the temperature detection terminal pins (10),
The resistance value of the thermistor (11) is measured by applying a voltage between the temperature detection terminal pins (10), and the temperature of the thermistor (11) is determined based on the resistance value of the thermistor (11). A resolver stator structure that is detected. 前記温度検出用端子ピン（１０）及び前記サーミスタ（１１）を一体に保持するサーミスタホルダ（１３）をさらに備え、
前記温度検出用端子ピン（１０）及び前記サーミスタ（１１）が、前記端子保持部（３１）に設けられた取付け開口部（３２）に対して、前記サーミスタホルダ（１３）によって着脱可能とされていることを特徴とする請求項１記載のレゾルバステータ構造。 The temperature detection terminal pin (10) and the thermistor (11) further comprising a thermistor holder (13) for holding together,
The temperature detection terminal pin (10) and the thermistor (11) can be attached to and detached from the attachment opening (32) provided in the terminal holding part (31) by the thermistor holder (13). The resolver stator structure according to claim 1, wherein: 前記サーミスタホルダ（１３）の両側の側面（１３ａ）から突出された一対の突部（１４）と、
前記取付け開口部（３２）の両側の側面（３２ａ）に設けられた一対のガイド溝（３３）と
をさらに備え、
前記取付け開口部（３２）に対する前記サーミスタホルダ（１３）の挿入が前記突部（１４）及び前記ガイド溝（３３）によって案内され、前記突部（１４）が前記ガイド溝（３３）に融着されることで前記サーミスタホルダ（１３）が前記端子保持部（３１）に固定されることを特徴とする請求項２記載のレゾルバステータ構造。 A pair of protrusions (14) protruding from side surfaces (13a) on both sides of the thermistor holder (13);
A pair of guide grooves (33) provided on the side surfaces (32a) on both sides of the mounting opening (32);
Insertion of the thermistor holder (13) into the mounting opening (32) is guided by the protrusion (14) and the guide groove (33), and the protrusion (14) is fused to the guide groove (33). 3. The resolver stator structure according to claim 2, wherein the thermistor holder (13) is fixed to the terminal holding part (31).
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010127834A (en) * 2008-11-28 2010-06-10 Minebea Co Ltd Stator structure of resolver
JP2011239529A (en) * 2010-05-07 2011-11-24 Tamagawa Seiki Co Ltd Stator structure for rotation angle detector or rotation synchronizer, and manufacturing method for the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021126356A1 (en) 2021-10-12 2023-04-13 Schaeffler Technologies AG & Co. KG Sensor device for detecting a rotational position of a rotor with an integrated temperature signal line

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JPS62148814A (en) * 1985-12-24 1987-07-02 Yaskawa Electric Mfg Co Ltd Temperature compensating method for resolver
JPH04242775A (en) * 1990-12-29 1992-08-31 Ricoh Co Ltd Fixing device for electrophotographic device
JPH06250563A (en) * 1993-02-22 1994-09-09 Canon Inc Image forming device
JPH09312948A (en) * 1996-03-19 1997-12-02 Toshiba Corp Stator of dynamo-electric machine
JP2003307437A (en) * 2002-04-16 2003-10-31 Honda Motor Co Ltd Structure and method for connecting winding

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JPS62148814A (en) * 1985-12-24 1987-07-02 Yaskawa Electric Mfg Co Ltd Temperature compensating method for resolver
JPH04242775A (en) * 1990-12-29 1992-08-31 Ricoh Co Ltd Fixing device for electrophotographic device
JPH06250563A (en) * 1993-02-22 1994-09-09 Canon Inc Image forming device
JPH09312948A (en) * 1996-03-19 1997-12-02 Toshiba Corp Stator of dynamo-electric machine
JP2003307437A (en) * 2002-04-16 2003-10-31 Honda Motor Co Ltd Structure and method for connecting winding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010127834A (en) * 2008-11-28 2010-06-10 Minebea Co Ltd Stator structure of resolver
JP2011239529A (en) * 2010-05-07 2011-11-24 Tamagawa Seiki Co Ltd Stator structure for rotation angle detector or rotation synchronizer, and manufacturing method for the same

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