JP3699929B2 - Stator structure for rotation detector - Google Patents

Stator structure for rotation detector Download PDF

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Publication number
JP3699929B2
JP3699929B2 JP2001373035A JP2001373035A JP3699929B2 JP 3699929 B2 JP3699929 B2 JP 3699929B2 JP 2001373035 A JP2001373035 A JP 2001373035A JP 2001373035 A JP2001373035 A JP 2001373035A JP 3699929 B2 JP3699929 B2 JP 3699929B2
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JP
Japan
Prior art keywords
stator
stator body
resin
rotation detector
shape
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.)
Expired - Fee Related
Application number
JP2001373035A
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Japanese (ja)
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JP2003174750A (en
Inventor
尚史 三村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tamagawa Seiki Co Ltd
Original Assignee
Tamagawa Seiki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority to JP2001373035A priority Critical patent/JP3699929B2/en
Publication of JP2003174750A publication Critical patent/JP2003174750A/en
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Publication of JP3699929B2 publication Critical patent/JP3699929B2/en
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Expired - Fee Related legal-status Critical Current

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Description

【0001】
【発明の属する技術分野】
本発明は、回転検出器用ステータ構造に関し、特に、磁極を含むステータ体の全面を樹脂で一体モールドすることにより、従来、行っていた一対の絶縁カバーによるステータ巻線に対する絶縁及びステータ体に対する防錆塗装をやめ、防錆効果の向上及び量産性の向上を得るための新規な改良に関する。
【0002】
【従来の技術】
従来、用いられていたこの種の回転検出器用ステータ構造としては、一般に、図6から図8で示される構成が採用されていた。
すなわち、図6において符号1で示されるものは、全体形状が輪状をなし積層型のステータ体であり、このステータ体1の両面には、全体形状が輪状をなし内方に突出する複数の磁極2を覆う形状を有する第1、第2絶縁カバー3、4が嵌め込まれ、第1絶縁カバー3の一端にはコネクタ端子5を一体に有するコネクタ部6が一体に形成されている。
前記ステータ体1は、予め、カチオン塗装、接着剤等の塗布による防錆処理が行われている。
【0003】
のステータ体1、第1、第2絶縁カバー3、4を一体状に重合させて組立てた組立後の状態は、図7に示される通りであり、絶縁カバー3、4の外周側にはこの絶縁カバー3、4で覆いつくせないむき出し部分10が形成されている。
また、図7の状態において各磁極2にステータ巻線11を巻回して設けた後の状態は、図8で示される通りである。
【0004】
【発明が解決しようとする課題】
従来の回転検出器用ステータ構造は、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、各絶縁カバーは、ステータ体の両面に嵌め込むだけであるため、ステータ体自体に対する防錆効果は得ることができず、そのために、ステータ体自体には、カチオン塗装や接着剤の塗布を行わなくてはならず、コストアップとなっていた。
また、ステータに絶縁カバーを嵌め込むため、組立費用が発生し、この絶縁カバーの成形精度が十分でない場合には、その形状歪などによって、組立作業に障害が発生したり、組立後に絶縁カバーが脱落することがあった。
【0005】
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、磁極を含むステータ体の全面を樹脂で一体モールドすることにより、従来、行っていた一対の絶縁カバーによるステータ巻線に対する絶縁及びステータ体に対する防錆塗装をやめ、防錆効果の向上及び量産性の向上を得るようにした回転検出器用ステータ構造を提供することを目的とする。
【0006】
【課題を解決するための手段】
本発明による回転検出器用ステータ構造は、全体形状が輪状をなし内方へ向けて突出する複数の磁極を有するステータ体と、前記磁極に絶縁部材を介して設けられたステータ巻線とからなり、前記磁極を含むステータ体は、樹脂一体モールドによって一体成形された前記絶縁部材によって覆われている回転検出器用ステータ構造において、前記樹脂一体モールドの一端には、前記樹脂一体モールドと一体でかつコネクタ端子をインサート成形してなると共に前記ステータ体の径方向に沿う長手方向を有して延設されたコネクタ部が形成され、前記コネクタ部には前記長手方向に沿って延設されたコネクタ端子を有し、前記ステータ体の周縁のU字型をなす複数の取付用凹部には、前記取付用凹部の形状に沿ってU字状に形成され前記樹脂一体モールドが形成されず前記ステータ体の一部が露出するU字状露出部が形成されている構成である。
【0007】
【発明の実施の形態】
以下、図面と共に本発明による回転検出器用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ついては同一符号を付して説明する。
図1から図3は、本発明による回転検出器用ステータ構造の形態を示すものであり、符号1で示されるものは全体形状が輪状をなす積層型のステータ体であり、このステータ体1の内面には内方へ向かって突出する複数の磁極2が形成されている。
【0008】
前記各磁極2を含む前記ステータ体1の全面(すなわち、従来露出していた周面1a及び周縁端面1b等含む)には、図示しない型を用いて樹脂による一体モールドで形成された樹脂一体モールド20が形成され、この樹脂一体モールド20によって従来の絶縁カバーに相当する第1、第2絶縁部材3、4も同時に一体成形されている。
【0009】
前記樹脂一体モールド20の一端には、コネクタ端子5をインサート成形で有するコネクタ部6が一体に成形されており、図2は図1の右側面図であり、図3は図2の磁極2にステータ巻線11を巻回した状態を示している。前記コネクタ部6は、ステータ体1の径方向に沿う長手方向Lを有して延設され、前記コネクタ端子5は前記長手方向Lに沿って延設されている。
従って、前述の図1から図3の形態においては、磁極2を含むステータ体1が全て樹脂一体モールド20による樹脂によって覆われており、この樹脂により防錆作用が達成されているため、従来のようなカチオン塗装等による防錆処理は不要となる。
【0010】
図4及び図5は、本発明による回転検出器用のステータ構造の図1から図3の構成の一部を加工した形態を示している。
すなわち、図5の右側面図に示されているように、ステータ体1の周縁にはU字型をなす複数の取付用凹部21が形成されており、前記樹脂一体モールド20が取付用凹部21のみを覆わないようにむき出し状態とし他は全て図1と同様とした構成である。すなわち、前記各取付用凹部21には、前記取付用凹部21の形状に沿ってU字状に形成され、前記樹脂一体モールド20が形成されず、前記ステータ体1の一部が露出するU字状露出部21Aが形成されている。
【0011】
【発明の効果】
本発明による回転検出器用ステータ構造は、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、ステータ体の取付用凹部の一部のU字状露出部のみを除外して樹脂一体モールドを形成しているため、絶縁カバーを別体として用いる必要がなく、かつ、ステータ体に対して塗料等による防錆処理をする必要がなく、組立工数低減、塗装工程削除、防錆効果の向上、複雑な回転検出器形状の実現、量産性の向上等を達成することができる。
【図面の簡単な説明】
【図1】 本発明による回転検出器用ステータ構造を示す断面図である。
【図2】 図1の右側面図である。
【図3】 図2の構成にステータ巻線を施した状態を示す構成図である。
【図4】 図1の他の形態を示す断面図である。
【図5】 図4の右側面図である。
【図6】 従来構成を示す分解断面図である。
【図7】 図6の組立後の状態を示す右側面図である。
【図8】 図7の状態にステータ巻線を施した状態を示す構成図である。
【符号の説明】
1 ステータ体
2 磁極
3、4 絶縁部材
5 コネクタ端子
6 コネクタ部
11 ステータ巻線
20 樹脂一体モールド
21 取付用凹部
L 長手方向
21A U字状露出部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotation detector stator structure, and in particular, by integrally molding a whole surface of a stator body including magnetic poles with a resin, insulation against a stator winding and a rust prevention for a stator body by a pair of insulation covers that have been conventionally performed. The present invention relates to a new improvement in order to stop painting and obtain an improvement in rust prevention effect and mass productivity.
[0002]
[Prior art]
Conventionally, the structure shown in FIGS. 6 to 8 is generally adopted as this type of stator structure for a rotation detector.
That is, what is indicated by reference numeral 1 in FIG. 6 is a laminated stator body having an annular shape as a whole, and a plurality of magnetic poles that are annular in shape and project inward on both surfaces of the stator body 1. First and second insulating covers 3 and 4 having a shape covering 2 are fitted, and a connector portion 6 having a connector terminal 5 integrally formed at one end of the first insulating cover 3 is integrally formed.
The stator body 1 is preliminarily subjected to rust prevention treatment by application of cationic coating or adhesive.
[0003]
FIG. 7 shows an assembled state in which the stator body 1, the first and second insulating covers 3, 4 of FIG. 6 are integrally assembled and assembled as shown in FIG. An exposed portion 10 that cannot be covered with the insulating covers 3 and 4 is formed.
Further, the state after the stator winding 11 is wound around each magnetic pole 2 in the state of FIG. 7 is as shown in FIG.
[0004]
[Problems to be solved by the invention]
Since the conventional stator structure for a rotation detector is configured as described above, the following problems exist.
That is, since each insulating cover is only fitted on both sides of the stator body, it is not possible to obtain a rust prevention effect on the stator body itself. For this reason, the stator body itself is not coated with a cation coating or an adhesive. It had to be done and it was costly.
In addition, since the insulation cover is fitted into the stator, assembly costs are incurred. If the insulation cover has insufficient molding accuracy, the assembly work may be hindered due to shape distortion or the like. It sometimes dropped out.
[0005]
The present invention has been made to solve the above-described problems, and in particular, by integrally molding the entire surface of a stator body including magnetic poles with a resin, a stator winding with a pair of insulating covers that has been conventionally performed is provided. An object of the present invention is to provide a stator structure for a rotation detector in which the insulation against rust and the antirust coating on the stator body are stopped, and the rust prevention effect is improved and the mass productivity is improved.
[0006]
[Means for Solving the Problems]
Rotation detector stator structure according to the present invention, Ri Do from a stator body having a plurality of magnetic poles overall shape protrudes toward the inside without a ring, and stator windings which are provided via an insulating member to said pole the stator body including a front Symbol poles in the that covered by the insulating member rotation detector stator structure that is integrally molded by resin integral molding, to one end of the resin integrally mold from the resin integrally molded integrally A connector portion is formed by insert molding of the connector terminal, and a connector portion extending in the longitudinal direction along the radial direction of the stator body is formed, and the connector portion is extended along the longitudinal direction. has a terminal, wherein the plurality of mounting recesses that form a U-shaped peripheral edge of the stator body, said resin integrally formed in a U-shape along the shape of the mounting recess Rudo is a configuration in which a U-shaped exposed portion partially exposed of the stator body is not formed are formed.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of a stator structure for a rotation detector according to the present invention will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected and demonstrated about the same or equivalent part as a prior art example.
Figures 1 to 3, which shows the form status of the rotation detector stator structure according to the present invention, those represented by the reference numeral 1 denotes a stator body of the multilayer entire shape forms an annular, of the stator body 1 A plurality of magnetic poles 2 projecting inward are formed on the inner surface.
[0008]
A resin integrated mold formed on the entire surface of the stator body 1 including the magnetic poles 2 (that is, including the peripheral surface 1a and the peripheral end surface 1b that have been exposed in the past) by using an unillustrated mold. 20 is formed, and the first and second insulating members 3 and 4 corresponding to the conventional insulating cover are also integrally formed by the resin integrated mold 20 at the same time.
[0009]
A connector portion 6 having a connector terminal 5 by insert molding is integrally formed at one end of the resin integrated mold 20, FIG. 2 is a right side view of FIG. 1, and FIG. The state which wound the stator coil | winding 11 is shown. The connector portion 6 extends in the longitudinal direction L along the radial direction of the stator body 1, and the connector terminal 5 extends along the longitudinal direction L.
Thus, in the shape condition of FIGS. 1-3 described above, all the stator body 1 comprising a magnetic pole 2 is covered with a resin by resin integral molding 20, since the anticorrosive effect is achieved by this resin, prior Rust prevention treatment such as cationic coating is not required.
[0010]
4 and 5 show a form obtained by processing a part of the structure of FIGS. 1 to 3 of the stator structure for a rotation detector according to the present invention .
That is, as shown in the right side view of FIG. 5, a plurality of U-shaped mounting recesses 21 are formed on the periphery of the stator body 1, and the resin integrated mold 20 is attached to the mounting recesses 21. The structure is the same as that shown in FIG. That is, each of the mounting recesses 21 is formed in a U shape along the shape of the mounting recess 21, the resin integrated mold 20 is not formed, and a U-shape in which a part of the stator body 1 is exposed. A shaped exposed portion 21A is formed.
[0011]
【The invention's effect】
Since the stator structure for a rotation detector according to the present invention is configured as described above, the following effects can be obtained.
That is, since the resin integrated mold is formed excluding only a part of the U-shaped exposed portion of the mounting recess of the stator body, it is not necessary to use an insulating cover as a separate body, and There is no need to carry out rust prevention treatment with paint or the like, and it is possible to achieve reduction in assembly man-hours, elimination of the coating process, improvement in rust prevention effect, realization of a complicated rotation detector shape, improvement in mass productivity, and the like.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a stator structure for a rotation detector according to the present invention.
FIG. 2 is a right side view of FIG.
3 is a configuration diagram showing a state where stator windings are applied to the configuration of FIG. 2; FIG.
4 is a cross-sectional view showing another embodiment of FIG.
FIG. 5 is a right side view of FIG. 4;
FIG. 6 is an exploded sectional view showing a conventional configuration.
7 is a right side view showing a state after the assembly shown in FIG. 6;
8 is a configuration diagram showing a state in which stator winding is applied to the state of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Stator body 2 Magnetic pole 3, 4 Insulation member 5 Connector terminal 6 Connector part 11 Stator winding 20 Resin integral mold 21 Recess for mounting
L Longitudinal direction
21A U-shaped exposed part

Claims (1)

全体形状が輪状をなし内方へ向けて突出する複数の磁極(2)を有するステータ体(1)と、前記磁極(2)に絶縁部材(3、4)を介して設けられたステータ巻線(11)とからなり、前記磁極(2)を含むステータ体(1)は、樹脂一体モールド(20)によって一体成形された前記絶縁部材(3、4)によって覆われている回転検出器用ステータ構造において、前記樹脂一体モールド(20)の一端には、前記樹脂一体モールド(20)と一体でかつコネクタ端子(5)をインサート成形してなると共に前記ステータ体 (1) の径方向に沿う長手方向 (L) を有して延設されたコネクタ部(6)が形成され、前記コネクタ部 (6) には前記長手方向 (L) に沿って延設されたコネクタ端子 (5) を有し、前記ステータ体(1)の周縁のU字型をなす複数の取付用凹部(21)には、前記取付用凹部 (21) の形状に沿ってU字状に形成され前記樹脂一体モールド (20) が形成されず前記ステータ体 (1) の一部が露出するU字状露出部 (21A) が形成されていることを特徴とする回転検出器用ステータ構造。A stator body (1) having a plurality of magnetic poles (2) projecting inward in a ring shape as a whole, and a stator winding provided on the magnetic pole (2) via insulating members (3, 4) (11) Do from the Ri, before Symbol pole (2) a stator comprising a (1) is a resin integrally molded (20) by integrally molded the insulating member (3, 4) by covered have that rotation detection In the device stator structure , at one end of the resin integrated mold (20), the resin integrated mold (20) and the connector terminal (5) are insert-molded, and at the radial direction of the stator body (1). It is a longitudinal (L) extending a connector portion along (6) is formed, on the connector portion (6) the longitudinal direction (L) extending along a connector pin (5) has, in the recess (21) for a plurality of attachment to form a U-shaped peripheral edge of the stator body (1) is formed in a U-shape along the shape of the mounting recess (21) Rotation detector stator structure, characterized in that the U-shaped exposed portion partially exposed of the serial resin integrally molded (20) is not formed said stator body (1) (21A) is formed.
JP2001373035A 2001-12-06 2001-12-06 Stator structure for rotation detector Expired - Fee Related JP3699929B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001373035A JP3699929B2 (en) 2001-12-06 2001-12-06 Stator structure for rotation detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001373035A JP3699929B2 (en) 2001-12-06 2001-12-06 Stator structure for rotation detector

Publications (2)

Publication Number Publication Date
JP2003174750A JP2003174750A (en) 2003-06-20
JP3699929B2 true JP3699929B2 (en) 2005-09-28

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5274780B2 (en) * 2007-03-16 2013-08-28 株式会社ケーヒン Rotary actuator
US8513843B2 (en) 2008-06-23 2013-08-20 Mitsubishi Electric Corporation Insulating housing for motor terminal
JP5902466B2 (en) * 2011-12-21 2016-04-13 ミネベア株式会社 Resolver insulator, VR resolver, and VR twin resolver

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