JP2010233445A - Sealing structure of stepping motor - Google Patents

Sealing structure of stepping motor Download PDF

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Publication number
JP2010233445A
JP2010233445A JP2010039764A JP2010039764A JP2010233445A JP 2010233445 A JP2010233445 A JP 2010233445A JP 2010039764 A JP2010039764 A JP 2010039764A JP 2010039764 A JP2010039764 A JP 2010039764A JP 2010233445 A JP2010233445 A JP 2010233445A
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Prior art keywords
cover
extension
annular groove
supported
elastic ring
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JP2010039764A
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Japanese (ja)
Inventor
Dae Bin Im
任大彬
Sang Hong Yoon
尹相洪
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Moatech Co Ltd
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Moatech Co Ltd
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Publication of JP2010233445A publication Critical patent/JP2010233445A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
    • F01D25/162—Bearing supports
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/187—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to inner stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/163—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at only one end of the rotor

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealing structure of a stepping motor, which is provided between a cover and the extension of an injection object to prevent water entry in a high humidity environment. <P>SOLUTION: A case is provided on the outer periphery of a motor, the lower part of a shaft is supported by a lower bearing which is supported by a cover, and the cover abuts on the extension of an injection object. In such a stepping motor, an annular groove is formed on the upper surface of the cover or in the lower part of the extension of an injection object, an elastic ring is inserted in the annular groove, and the elastic ring is interposed between the cover and the extension of an injection object. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明はステップモータのシーリング構造に係り、より詳しくはステップモータのカバーまたはステータ固定用射出物に環状溝を形成し、この環状溝に弾性リングを挿入させたステップモータのシーリング構造に関する。   The present invention relates to a stepping motor sealing structure, and more particularly to a stepping motor sealing structure in which an annular groove is formed in a step motor cover or a stator fixing injection, and an elastic ring is inserted into the annular groove.

従来のステップモータのベアリング支持装置を図１に基づいて説明すれば、シャフト１０を支持する上部ベアリング１２は射出物１４の端部によって支持され、射出物１４の上部には上部フランジ２０が固定されることにより、モーターが所定の被付着物（図示せず）に付着されるようにする。モーターの外周にはケース２６が設けられ、ケース２６の上部は折り曲げられ、この折曲部は上部フランジ２０の下側に位置する。射出物１４は、ケース２６の方向に開いた空間にコイル３０が巻き付けられ、その反対側にはヨーク３２が装着され、ヨーク３２と対向する位置にマグネット４６が位置し、マグネット４６はマグネット支持部４８によって支持される。シャフト１０の下部は下部ベアリング４２によって支持され、下部ベアリング４２は鉄板でなるカバー４０によって支持される。前記カバー４０は射出物１４の延長部４３と当接する。   A conventional step motor bearing support device will be described with reference to FIG. 1. An upper bearing 12 that supports a shaft 10 is supported by an end of an injection 14, and an upper flange 20 is fixed to the upper portion of the injection 14. By doing so, the motor is attached to a predetermined adherend (not shown). A case 26 is provided on the outer periphery of the motor, and an upper portion of the case 26 is bent, and the bent portion is located below the upper flange 20. In the projectile 14, a coil 30 is wound around a space opened in the direction of the case 26, a yoke 32 is mounted on the opposite side, and a magnet 46 is located at a position facing the yoke 32, and the magnet 46 is a magnet support portion. 48. The lower part of the shaft 10 is supported by a lower bearing 42, and the lower bearing 42 is supported by a cover 40 made of an iron plate. The cover 40 abuts on the extension 43 of the projectile 14.

前記のような従来の構造は、カバー４０と射出物１４の延長部４３が固定される構造であるが、高湿環境で使用するとき、カバー４０と射出物１４の延長部４３の間に水分が浸透してヨーク３２にさびが発生しモーター性能を低下させる問題点があった。   The conventional structure as described above is a structure in which the cover 40 and the extension 43 of the injection 14 are fixed, but when used in a high-humidity environment, moisture is present between the cover 40 and the extension 43 of the injection 14. As a result, the yoke 32 is rusted and the motor performance is degraded.

したがって、本発明は上述した従来の問題点を解決するためになされたもので、本発明の目的は、カバーと射出物の延長部の間に設けられて、高湿環境で水分浸透を防止するステップモータのシーリング構造を提供することにある。   Accordingly, the present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide moisture between a cover and an extension of an injection product to prevent moisture penetration in a high humidity environment. To provide a sealing structure for a step motor.

前記課題を達成するために、本発明の一面によれば、モーターの外周にケースが設けられ、シャフトの下部は下部ベアリングによって支持され、下部ベアリングはカバーによって支持され、前記カバーは射出物の延長部と当接するステップモータであって、前記カバーの上面には環状溝が形成され、前記環状溝には弾性リングが挿着され、弾性リングがカバーと射出物の延長部の間に介在される。   In order to achieve the above object, according to one aspect of the present invention, a case is provided on the outer periphery of the motor, a lower portion of the shaft is supported by a lower bearing, a lower bearing is supported by a cover, and the cover is an extension of an injection. A step motor abutting on the portion, wherein an annular groove is formed on the upper surface of the cover, an elastic ring is inserted into the annular groove, and the elastic ring is interposed between the cover and the extension of the projectile .

前記課題を達成するために、本発明の他の面によれば、モーターの外周にはケースが設けられ、シャフトの下部は下部ベアリングによって支持され、下部ベアリングはカバーによって支持され、前記カバーは射出物の延長部と当接するステップモータであって、前記射出物の延長部の下部に環状溝が形成され、前記環状溝に弾性リングが挿着され、弾性リングがカバーと射出物の延長部の間に介在される。   In order to achieve the above object, according to another aspect of the present invention, a case is provided on the outer periphery of the motor, a lower portion of the shaft is supported by a lower bearing, a lower bearing is supported by a cover, and the cover is injected. A step motor that abuts an extension of the object, wherein an annular groove is formed at a lower portion of the extension of the injection object, an elastic ring is inserted into the annular groove, and the elastic ring is formed between the cover and the extension of the injection object. Intervening in between.

本発明によるステップモータのシーリング構造は、カバーの上面にまたは射出物の延長部の下部に環状溝が形成され、前記環状溝には弾性リングが挿着され、弾性リングがカバーと射出物の延長部の間に介在されることにより、カバーと射出物の延長部の間への水分浸透を防止する効果がある。   In the sealing structure of the step motor according to the present invention, an annular groove is formed on the upper surface of the cover or at the lower part of the extension of the projectile, an elastic ring is inserted into the annular groove, and the elastic ring is an extension of the cover and the projectile. By being interposed between the parts, there is an effect of preventing moisture permeation between the cover and the extended part of the injection.

従来のステップモータの断面図である。It is sectional drawing of the conventional step motor. 本発明の一実施例によるステップモータの断面図である。It is sectional drawing of the step motor by one Example of this invention. 本発明によるカバーの断面図である。FIG. 3 is a cross-sectional view of a cover according to the present invention. 本発明によるカバーの断面図である。FIG. 3 is a cross-sectional view of a cover according to the present invention. 本発明の他の実施例によるステップモータの断面図である。It is sectional drawing of the step motor by the other Example of this invention.

以下、本発明の実施例を添付図面に基づいて説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図２〜図４は本発明の一実施例を示す。図２〜図４に示すように、シャフト１０を支持する上部ベアリング１２は射出物１４の端部によって支持され、射出物１４の上部には上部フランジ２０が固定されることにより、モーターが所定の被付着物（図示せず）に付着されるようにする。モーターの外周にはケース２６が設けられ、ケース２６の上部は折り曲げられ、この折曲部は上部フランジ２０の下側に位置する。射出物１４はケース２６の方向に開いた空間にコイル３０が巻き付けられ、その反対側にはヨーク３２が装着され、ヨーク３２と対向する位置にマグネット４６が位置し、マグネット４６はマグネット支持部４８によって支持される。シャフト１０の下部は下部ベアリング４２によって支持され、下部ベアリング４２は鉄板でなるカバー４０によって支持される。前記カバー４０は射出物１４の延長部４３と当接する。前記カバー４０の上面には環状溝６０が形成され、前記環状溝６０には弾性リング６４が挿着される。   2 to 4 show an embodiment of the present invention. As shown in FIGS. 2 to 4, the upper bearing 12 that supports the shaft 10 is supported by the end portion of the projectile 14, and the upper flange 20 is fixed to the upper portion of the projectile 14, so that the motor is set in a predetermined manner. It is made to adhere to an adherend (not shown). A case 26 is provided on the outer periphery of the motor, and an upper portion of the case 26 is bent, and the bent portion is located below the upper flange 20. The projectile 14 has a coil 30 wound around a space opened in the direction of the case 26, a yoke 32 is mounted on the opposite side, and a magnet 46 is located at a position facing the yoke 32, and the magnet 46 is a magnet support 48. Supported by. The lower part of the shaft 10 is supported by a lower bearing 42, and the lower bearing 42 is supported by a cover 40 made of an iron plate. The cover 40 abuts on the extension 43 of the projectile 14. An annular groove 60 is formed on the upper surface of the cover 40, and an elastic ring 64 is inserted into the annular groove 60.

前記のような構造によって、弾性リング６４がカバー４０と射出物１４の延長部４３の間に介在されることにより、カバー４０と射出物１４の延長部４３の間への水分浸透を防止することになる。   With the structure as described above, the elastic ring 64 is interposed between the cover 40 and the extension 43 of the injection 14 to prevent moisture permeation between the cover 40 and the extension 43 of the injection 14. become.

図５は本発明の他の実施例を示す。同図に示すように、射出物１４の延長部４３の下部に環状溝８０が形成され、前記環状溝８０に弾性リング６４が挿入されることもできる。結果として、カバー４０と射出物１４の延長部４３の間への水分浸透を防止することになる。   FIG. 5 shows another embodiment of the present invention. As shown in the figure, an annular groove 80 may be formed in the lower part of the extension 43 of the projectile 14, and an elastic ring 64 may be inserted into the annular groove 80. As a result, moisture permeation between the cover 40 and the extension 43 of the injection 14 is prevented.

以上説明したものは本発明によるステップモータのシーリング構造を実施するための一実施例に過ぎないもので、本発明は本実施例に限定せず、特許請求の範囲に請求するような本発明の要旨を逸脱することなしに、当該発明が属する分野で通常の知識を持った者であれば誰でも多様な変更が可能であり、そのような変形も本発明の範疇に属するものであろう。   What has been described above is merely an example for carrying out the sealing structure of the step motor according to the present invention. The present invention is not limited to this example, and the present invention as claimed in the claims is not limited thereto. Without departing from the gist, any person having ordinary knowledge in the field to which the invention belongs can make various modifications, and such modifications are also within the scope of the present invention.

本発明は、高湿環境でカバーと射出物の延長部の間への水分浸透を防止するステップモータに適用可能である。   The present invention is applicable to a step motor that prevents moisture permeation between the cover and the extension of the injection in a high humidity environment.

１０ シャフト
１２ 上部ベアリング
１４ 射出物
２０ 上部フランジ
２６ ケース
３０ コイル
３２ ヨーク
４０ カバー
４２ 下部ベアリング
４３ 延長部
４６ マグネット
６０ 環状溝
６４ 弾性リング
８０ 環状溝 10 shaft 12 upper bearing 14 projectile 20 upper flange 26 case 30 coil 32 yoke 40 cover 42 lower bearing 43 extension 46 magnet 60 annular groove 64 elastic ring 80 annular groove

Claims (2)

モーターの外周にケースが設けられ、シャフトの下部は下部ベアリングによって支持され、下部ベアリングはカバーによって支持され、前記カバーは射出物の延長部と当接するステップモータにおいて、
前記カバーの上面には環状溝が形成され、前記環状溝には弾性リングが挿着され、弾性リングがカバーと射出物の延長部の間に介在されることを特徴とする、ステップモータのシーリング構造。 In a step motor in which a case is provided on the outer periphery of the motor, the lower part of the shaft is supported by a lower bearing, the lower bearing is supported by a cover, and the cover abuts against an extension of the injection product.
An annular groove is formed on the upper surface of the cover, and an elastic ring is inserted into the annular groove, and the elastic ring is interposed between the cover and the extension of the projectile. Construction. モーターの外周にはケースが設けられ、シャフトの下部は下部ベアリングによって支持され、下部ベアリングはカバーによって支持され、前記カバーは射出物の延長部と当接するステップモータにおいて、
前記射出物の延長部の下部に環状溝が形成され、前記環状溝に弾性リングが挿着され、弾性リングがカバーと射出物の延長部の間に介在されることを特徴とする、ステップモータのシーリング構造。 In the step motor in which a case is provided on the outer periphery of the motor, the lower part of the shaft is supported by a lower bearing, the lower bearing is supported by a cover, and the cover is in contact with the extension of the injection,
A step motor, wherein an annular groove is formed in a lower part of the extension of the projectile, an elastic ring is inserted into the annular groove, and the elastic ring is interposed between the cover and the extension of the projectile. Sealing structure.
JP2010039764A 2009-03-27 2010-02-25 Sealing structure of stepping motor Pending JP2010233445A (en)

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KR1020090026200A KR101025686B1 (en) 2009-03-27 2009-03-27 Sealing apparatus of stepping motor

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111987837A (en) * 2019-05-23 2020-11-24 日本电产三协株式会社 Electric motor
JP2020191749A (en) * 2019-05-23 2020-11-26 日本電産サンキョー株式会社 motor

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JP2001280501A (en) * 2000-03-31 2001-10-10 Sanyo Denki Co Ltd Sealing structure and dynamo-electric machine
JP2009050149A (en) * 2007-07-26 2009-03-05 Nidec Sankyo Corp Electric motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111987837A (en) * 2019-05-23 2020-11-24 日本电产三协株式会社 Electric motor
JP2020191750A (en) * 2019-05-23 2020-11-26 日本電産サンキョー株式会社 motor
JP2020191749A (en) * 2019-05-23 2020-11-26 日本電産サンキョー株式会社 motor

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KR20100107871A (en) 2010-10-06
KR101025686B1 (en) 2011-03-30
CN101847923A (en) 2010-09-29

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