JP3990690B2 - motor - Google Patents

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Publication number
JP3990690B2
JP3990690B2 JP2004208078A JP2004208078A JP3990690B2 JP 3990690 B2 JP3990690 B2 JP 3990690B2 JP 2004208078 A JP2004208078 A JP 2004208078A JP 2004208078 A JP2004208078 A JP 2004208078A JP 3990690 B2 JP3990690 B2 JP 3990690B2
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Prior art keywords
frame member
cap
ring
frame
cover member
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JP2006033979A (en
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英也 西川
晋介 逸見
誠樹 児玉
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Description

この発明は、モータ、特に、DCブラシレスモータにおける防水構造に関するものである。   The present invention relates to a waterproof structure in a motor, in particular, a DC brushless motor.

従来のDCブラシレスモータは、フレームのリアベアリングボックス部に空いた穴に、ゴム製のキャップを嵌め込むことで防水性を確保していた。
DCブラシレスモータには、フレームのリアベアリングボックス部に生産性の必要から穴があいている。この穴にゴム製のキャップを嵌め込むことで、防水性および防塵性を確保していたのである。
しかしながら、このようなゴム製のキャップは、防水のための封塞作用を行うキャップ自体の反力のみで固定されているため、熱等の劣化の影響を大きく受けやすく、防水性を確保するのは難しかった。
A conventional DC brushless motor has secured waterproofness by fitting a rubber cap into a hole formed in a rear bearing box portion of the frame.
The DC brushless motor has a hole in the rear bearing box portion of the frame because of the necessity of productivity. By fitting a rubber cap into this hole, waterproofness and dustproofness were ensured.
However, since such a rubber cap is fixed only by the reaction force of the cap itself that performs the sealing action for waterproofing, it is easily affected by deterioration such as heat and the waterproofing is ensured. Was difficult.

また、防水構造一般としては、樹脂成形品を用い、弾性変形により水や埃の進入を防止する構成も提案されている(例えば、特許文献1参照)。
しかし、このような構成では、防水構造が複雑となり、防水のための取付作業も煩雑となる。
Further, as a general waterproof structure, a configuration in which a resin molded product is used and water or dust is prevented from entering by elastic deformation has been proposed (for example, see Patent Document 1).
However, with such a configuration, the waterproof structure is complicated, and the mounting work for waterproofing becomes complicated.

特開平7−326205号公報JP 7-326205 A

この発明は、簡潔な構成で的確に防水性を確保でき、防水のための取付作業も簡単に行えるモータを得ようとするものである。   An object of the present invention is to obtain a motor that can accurately ensure waterproofness with a simple configuration and can easily perform mounting work for waterproofing.

この発明に係るモータでは、回転軸を支承するベアリングを保持し前記回転軸の端面に対向する開口部を有するフレーム部材、前記フレーム部材の開口部の外側周縁に当接し、軸方向に挟み込まれて、該開口部を密封状態で閉塞するためのOリングからなる封塞部材、前記Oリングからなる封塞部材を被包するカバー部材を備え、前記カバー部材に前記回転軸の軸方向への前記カバー部材の移動により前記フレーム部材と係合する係合部を設け、前記係合部の前記フレーム部材への係合により前記封塞部材を被包して前記カバー部材を前記フレーム部材に装着するようにしたものである。 In the motor according to the present invention, the frame member that holds the bearing that supports the rotating shaft and has an opening facing the end surface of the rotating shaft, abuts on the outer periphery of the opening of the frame member, and is sandwiched in the axial direction. A sealing member made of an O-ring for closing the opening in a sealed state, and a cover member enclosing the sealing member made of the O-ring, and the cover member in the axial direction of the rotary shaft An engagement portion that engages with the frame member is provided by movement of the cover member, and the sealing member is encapsulated by the engagement of the engagement portion with the frame member, and the cover member is attached to the frame member. It is what I did.

この発明によれば、フレーム部材の開口部の外側周縁に当接し、軸方向に挟み込まれて、該開口部を密封状態で閉塞するためのOリングからなる封塞部材を設けるとともに、カバー部材に軸方向へのカバー部材の移動によりフレーム部材と係合する係合部を設け、係合部のフレーム部材への係合により封塞部材を被包してカバー部材をフレーム部材に装着することによって、簡潔な構成で的確に防水性を確保でき、防水のための取付作業も簡単に行えるモータを得ることができる。 According to the present invention , the cover member is provided with the sealing member that is in contact with the outer peripheral edge of the opening portion of the frame member and is sandwiched in the axial direction, and includes an O-ring for closing the opening portion in a sealed state. By providing an engaging portion that engages with the frame member by moving the cover member in the axial direction, enclosing the sealing member by engaging the engaging portion with the frame member, and attaching the cover member to the frame member Thus, it is possible to obtain a motor that can accurately ensure waterproofness with a simple configuration and can easily perform mounting work for waterproofing.

実施の形態1.
この発明による実施の形態1を図1から図5までについて説明する。図1は実施の形態1における構成を示す縦断面図である。図2は実施の形態1における構成を示す正面図である。図3は実施の形態1における部分構成を示す分解図である。図4は実施の形態1における樹脂製キャップの構成を示すものである。図4(a)は樹脂製キャップの正面図を示し、図4(b)は樹脂製キャップの縦断面図を示している。図5は実施の形態1におけるOリングの構成を示すものである。図5(a)はOリングの正面図を示し、図4(b)はOリングの縦断面図を示している。
Embodiment 1 FIG.
A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a longitudinal sectional view showing the configuration of the first embodiment. FIG. 2 is a front view showing the configuration of the first embodiment. FIG. 3 is an exploded view showing a partial configuration in the first embodiment. FIG. 4 shows the configuration of the resin cap in the first embodiment. 4A shows a front view of the resin cap, and FIG. 4B shows a longitudinal sectional view of the resin cap. FIG. 5 shows the configuration of the O-ring in the first embodiment. FIG. 5A shows a front view of the O-ring, and FIG. 4B shows a longitudinal sectional view of the O-ring.

図1から図3までにおいて、モータ1はハウジング2とフレーム部材3が嵌合された構造となっており、フレーム部材3にはステータ4が固定されている。ステータ4には絶縁用のインシュレータ5を介してコイル6が巻かれており、コイル6はターミナル部7を介してモータ用リード線8に接続されている。
回転軸Sを有するロータ9はフレーム部材3端部のリアベアリング10と、コーキングによってハウジング2に固定されたフロントベアリング11で保持されており、ロータ9にはリング磁石12が接着されている。
フレーム部材3端部のリアベアリングボックス部13には組付け性向上のため作業用穴Hがあけられており、作業用穴Hにはスナップフィットで固定できる形状の樹脂製キャップ14を挿入し、フレームとキャップとの間にOリング15を挟み込むことで閉塞されている。樹脂製キャップ14にはスナップフィット用の爪部材14aが設けられる。
1 to 3, the motor 1 has a structure in which a housing 2 and a frame member 3 are fitted, and a stator 4 is fixed to the frame member 3. A coil 6 is wound around the stator 4 via an insulating insulator 5, and the coil 6 is connected to a motor lead wire 8 via a terminal portion 7.
The rotor 9 having the rotation axis S is held by a rear bearing 10 at the end of the frame member 3 and a front bearing 11 fixed to the housing 2 by caulking, and a ring magnet 12 is bonded to the rotor 9.
The rear bearing box 13 at the end of the frame member 3 is provided with a work hole H for improved assembly, and a plastic cap 14 having a shape that can be fixed with a snap fit is inserted into the work hole H. It is blocked by inserting an O-ring 15 between the frame and the cap. The resin cap 14 is provided with a claw member 14a for snap fitting.

図4に示すように、樹脂製キャップ14にはOリング15を位置決めする溝14bがあり、アニール処理されている。Oリング15のバリ15aは図5に示す通り気密には影響のない部分である側面に位置している。   As shown in FIG. 4, the resin cap 14 has a groove 14b for positioning the O-ring 15 and is annealed. As shown in FIG. 5, the burr 15a of the O-ring 15 is located on a side surface that is a portion that does not affect the airtightness.

フレーム部材3端部のリアベアリングボックス部13に設けられた組付け性向上のための作業用穴Hを閉塞するには、図3に示すように、樹脂製キャップ14の溝14bにOリング15を嵌合し、樹脂製キャップ14を回転軸Sの軸方向に移動してOリング15をリアベアリングボックス部13に設けられた作業用穴Hの外側周縁に当接した状態で爪部材14aを作業用穴Hに挿入し爪部材14aを作業用穴Hの内側周縁に相当するリアベアリングボックス部13に係合する。
この爪部材14aの係合により樹脂製キャップ14はリアベアリングボックス部13に装着される。作業用穴HはOリング15により封塞され、樹脂製キャップ14の取り付けは容易に行える。
In order to close the work hole H provided in the rear bearing box portion 13 at the end of the frame member 3 for improving the assemblability, an O-ring 15 is formed in the groove 14b of the resin cap 14 as shown in FIG. And the claw member 14a is moved with the O-ring 15 in contact with the outer peripheral edge of the work hole H provided in the rear bearing box 13 by moving the resin cap 14 in the axial direction of the rotary shaft S. The claw member 14 a is inserted into the work hole H and engaged with the rear bearing box portion 13 corresponding to the inner periphery of the work hole H.
The resin cap 14 is attached to the rear bearing box portion 13 by the engagement of the claw member 14a. The working hole H is sealed with an O-ring 15 so that the resin cap 14 can be easily attached.

この発明による実施の形態1によれば、回転軸Sを支承するベアリング10を保持し前記回転軸Sの端面に対向する作業用穴Hからなる開口部を有するフレーム部材3、前記フレーム部材3の開口部を密封状態で閉塞するためのOリング15からなる封塞部材、前記Oリング15からなる封塞部材を被包するキャップ14からなるカバー部材を備え、前記キャップ14からなるカバー部材に前記回転軸Sの軸方向への前記キャップ14からなるカバー部材の移動により前記フレーム部材3と係合する爪部材14aからなる係合部を設け、前記爪部材14aからなる係合部の前記フレーム部材3への係合により前記Oリング15からなる封塞部材を被包して前記キャップ14からなるカバー部材を前記フレーム部材3に装着するようにしたので、封塞部材およびカバー部材による簡潔な構成で的確に防水性を確保でき、密封機能の信頼性向上が図れるとともに、防水のための取付作業も簡単に行えるモータを得ることができる。   According to the first embodiment of the present invention, the frame member 3 that holds the bearing 10 that supports the rotary shaft S and has an opening made of a working hole H that faces the end surface of the rotary shaft S, and the frame member 3. A sealing member comprising an O-ring 15 for closing the opening in a sealed state; a cover member comprising a cap 14 enclosing the sealing member comprising the O-ring 15; An engagement portion made of a claw member 14a that engages with the frame member 3 by the movement of the cover member made of the cap 14 in the axial direction of the rotation shaft S is provided, and the frame member of the engagement portion made of the claw member 14a Since the sealing member made up of the O-ring 15 is encapsulated by the engagement with the cover member 3 and the cover member made up of the cap 14 is attached to the frame member 3. Can be secured accurately waterproof simple construction by sealing covering section member and the cover member, together with the attained reliability improvement of the sealing function, it is possible to obtain a motor that allows the easy mounting operation for waterproofing.

参考例
この発明と類似の構成を有する参考例を図6および図7について説明する。図6は参考例における構成を示す縦断面図である。図7は参考例における部分構成を示す分解図である。
この参考例において、ここで説明する特有の構成以外の構成については、先に説明した実施の形態1における構成と同一の構成内容を具備し、同様の作用を奏するものである。図中、同一符号は同一または相当部分を示す。
Reference Example A reference example having a configuration similar to that of the present invention will be described with reference to FIGS. FIG. 6 is a longitudinal sectional view showing the configuration of the reference example . FIG. 7 is an exploded view showing a partial configuration in the reference example .
In this reference example , the configuration other than the specific configuration described here has the same configuration as the configuration in the first embodiment described above, and has the same effect. In the drawings, the same reference numerals indicate the same or corresponding parts.

図6および図7において、フレーム部材3端部のリアベアリングボックス部13に設けられた組付け性向上のための作業用穴Hにシール19が貼り付けられており、その周りに接着剤を塗布しゴム製キャップ20を固定することで閉塞される。
キャップ20の材質はゴムの他に樹脂や金属でもかまわない。その他の構成は実施の形態1と同じである。
6 and 7, a seal 19 is attached to a work hole H provided in the rear bearing box portion 13 at the end of the frame member 3 for improving assemblability, and an adhesive is applied around the seal hole 19. The rubber cap 20 is closed by fixing it.
The material of the cap 20 may be resin or metal in addition to rubber. Other configurations are the same as those of the first embodiment.

フレーム部材3端部のリアベアリングボックス部13に設けられた組付け性向上のための作業用穴Hを閉塞するには、図7に示すように、シール19を作業用穴Hに貼り付け、その周りに接着剤を塗布する。キャップ20は回転軸Sの軸方向に移動してフレーム部材3の端面から突出するリアベアリングボックス部13にキャップ20の周縁部に設けられた係合筒部20aを嵌合させる。シール19の外面およびシール19周辺のリアベアリングボックス部13の表面とキャップ20に内面とは接着剤で固着され、キャップ20はフレーム部材3端部のリアベアリングボックス部13に装着される。シール19の貼り付けや接着剤の塗布およびキャップ20の装着は容易に行われる。   In order to close the work hole H for improving assemblability provided in the rear bearing box part 13 at the end of the frame member 3, as shown in FIG. Apply adhesive around it. The cap 20 moves in the axial direction of the rotating shaft S and engages an engagement cylinder portion 20 a provided on the peripheral edge portion of the cap 20 with the rear bearing box portion 13 protruding from the end surface of the frame member 3. The outer surface of the seal 19 and the surface of the rear bearing box portion 13 around the seal 19 and the inner surface of the cap 20 are fixed with an adhesive, and the cap 20 is attached to the rear bearing box portion 13 at the end of the frame member 3. The sticking of the seal 19 and the application of the adhesive and the mounting of the cap 20 are easily performed.

この参考例によれば、回転軸Sを支承するベアリングを保持し前記回転軸Sの端面に対向する作業用穴Hからなる開口部を有するフレーム部材3、前記フレーム部材3の作業用穴Hからなる開口部を密封状態で閉塞するためのフレーム部材3に貼り付けられたシール19からなる封塞部材、前記シール19からなる封塞部材を被包するキャップ20からなるカバー部材を備え、前記キャップ20からなるカバー部材に前記回転軸Sの軸方向への前記キャップ20からなるカバー部材の移動により前記フレーム部材3と係合する係合筒部20aからなる係合部を設け、前記係合筒部20aからなる係合部の前記フレーム部材3への係合により前記シール19からなる封塞部材を被包して前記キャップ20からなるカバー部材を前記フレーム部材3に装着するようにしたので、シールからなる封塞部材およびカバー部材による簡潔な構成で的確に防水性を確保でき、密封機能の信頼性向上が図れるとともに、防水のための取付作業も簡単に行えるモータを得ることができる。 According to this reference example , the frame member 3 having an opening made of a work hole H that holds the bearing that supports the rotary shaft S and faces the end surface of the rotary shaft S, and the work hole H of the frame member 3 A sealing member comprising a seal 19 affixed to the frame member 3 for closing the opening to be sealed in a sealed state, and a cover member comprising a cap 20 enclosing the sealing member comprising the seal 19. The cover member made of 20 is provided with an engagement portion made of an engagement tube portion 20a that engages with the frame member 3 by the movement of the cover member made of the cap 20 in the axial direction of the rotating shaft S, and the engagement tube The cover member made of the cap 20 is covered with the cover member made of the cap 19 by enclosing the sealing member made of the seal 19 by the engagement of the engaging portion made of the portion 20a with the frame member 3. As a result, it is possible to secure the waterproof property accurately with a simple structure by the sealing member and the cover member made of the seal, improve the reliability of the sealing function, and easily perform the mounting work for waterproofing. A motor can be obtained.

この発明による実施の形態1における構成を示す縦断面図である。It is a longitudinal cross-sectional view which shows the structure in Embodiment 1 by this invention. この発明による実施の形態1における構成を示す正面図である。It is a front view which shows the structure in Embodiment 1 by this invention. この発明による実施の形態1における部分構成を示す分解図である。It is an exploded view which shows the partial structure in Embodiment 1 by this invention. この発明による実施の形態1における樹脂製キャップの構成を示す正面図および縦断面図である。It is the front view and longitudinal cross-sectional view which show the structure of the resin caps in Embodiment 1 by this invention. この発明による実施の形態1におけるOリングの構成を示す正面図および縦断面図である。It is the front view and longitudinal cross-sectional view which show the structure of the O-ring in Embodiment 1 by this invention. 参考例における構成を示す縦断面図である。It is a longitudinal cross-sectional view which shows the structure in a reference example . 参考例における部分構成を示す分解図である。It is an exploded view which shows the partial structure in a reference example .

符号の説明Explanation of symbols

1 モータ、2 ハウジング、3 フレーム部材、4 ステータ、5 インシュレータ、6 コイル、7 ターミナル部、8 モータ用リード線、9 ロータ、10 リアベアリング、11 フロントベアリング、12 リング磁石、13 リアベアリング部、14 樹脂製キャップ、14a スナップフィット用爪部材、15 Oリング、16 Oリング溝、18 バリ、19 シール、20 ゴム製キャップ、21 キャップ。   DESCRIPTION OF SYMBOLS 1 Motor, 2 Housing, 3 Frame member, 4 Stator, 5 Insulator, 6 Coil, 7 Terminal part, 8 Motor lead wire, 9 Rotor, 10 Rear bearing, 11 Front bearing, 12 Ring magnet, 13 Rear bearing part, 14 Resin cap, 14a Claw member for snap fit, 15 O-ring, 16 O-ring groove, 18 burr, 19 seal, 20 rubber cap, 21 cap.

Claims (1)

回転軸を支承するベアリングを保持し前記回転軸の端面に対向する開口部を有するフレーム部材、前記フレーム部材の開口部の外側周縁に当接し、軸方向に挟み込まれて、該開口部を密封状態で閉塞するためのOリングからなる封塞部材、前記Oリングからなる封塞部材を被包するカバー部材を備え、前記カバー部材に前記回転軸の軸方向への前記カバー部材の移動により前記フレーム部材と係合する係合部を設け、前記係合部の前記フレーム部材への係合により前記封塞部材を被包して前記カバー部材を前記フレーム部材に装着するようにしたことを特徴とするモータ。 A frame member that holds a bearing that supports the rotating shaft and has an opening facing the end surface of the rotating shaft, abuts against the outer peripheral edge of the opening of the frame member, and is sandwiched in the axial direction to seal the opening A sealing member made of an O-ring for closing the sealing member, and a cover member enclosing the sealing member made of the O-ring. The frame is moved by moving the cover member in the axial direction of the rotating shaft. An engagement portion that engages with a member is provided, the sealing member is encapsulated by engagement of the engagement portion with the frame member, and the cover member is attached to the frame member. Motor.
JP2004208078A 2004-07-15 2004-07-15 motor Expired - Fee Related JP3990690B2 (en)

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JP4564982B2 (en) * 2007-05-11 2010-10-20 三菱電機株式会社 Rotating electric machine
JP5042707B2 (en) * 2007-05-17 2012-10-03 アスモ株式会社 Seal structure and rotating electric machine
DE112012006971T5 (en) 2012-10-30 2015-07-09 Mitsubishi Electric Corporation Electric engine
JP6541442B2 (en) * 2015-05-29 2019-07-10 株式会社ミツバ Cover sealing structure and controller having the sealing structure
JP2021058010A (en) * 2019-09-30 2021-04-08 日本電産株式会社 motor

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