JPH06153478A - Waterproof brushless direct-current motor - Google Patents

Waterproof brushless direct-current motor

Info

Publication number
JPH06153478A
JPH06153478A JP10835892A JP10835892A JPH06153478A JP H06153478 A JPH06153478 A JP H06153478A JP 10835892 A JP10835892 A JP 10835892A JP 10835892 A JP10835892 A JP 10835892A JP H06153478 A JPH06153478 A JP H06153478A
Authority
JP
Japan
Prior art keywords
seal
oil seal
resin
switch
oil
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.)
Pending
Application number
JP10835892A
Other languages
Japanese (ja)
Inventor
Kazunori Shinohara
一典 篠原
Masamichi Ito
正道 伊藤
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.)
HOKUTO Manufacturing
HOKUTO SEISAKUSHO KK
Original Assignee
HOKUTO Manufacturing
HOKUTO SEISAKUSHO KK
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
Application filed by HOKUTO Manufacturing, HOKUTO SEISAKUSHO KK filed Critical HOKUTO Manufacturing
Priority to JP10835892A priority Critical patent/JPH06153478A/en
Publication of JPH06153478A publication Critical patent/JPH06153478A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To provide a waterproof brushless direct-current motor which can be used in an watery environment and eliminate maintenance by making up the seal part of a tip-end output shaft into an oil seal double structure and mounting a cap of resin-covered structure in the front surface of the seal part. CONSTITUTION:The seal part of a tip-end output shaft has an oil seal double structure. A spacer 12 is fitted between oil seals 10, 11 and then the clearance is greased. A resin cover 9 is mounted in the front surface of the oil seal 10 with a very small clearance between the resin cover and a shaft 1, thereby preventing dust from entering the oil seal part. An armature coil 4 is molded with resin to form a stator unit 5 and then incorporate it into a case 3 and seal a clearance with sealing material 13 and to isolate the rotary part and the electrical part with double structure. A switch part is constituted so that the electric part is completely sealed so as to perform the change-over of a switch by an internal magnetic sensor 8 with the magnetism of two magnets incorporated into a switch ring 6 mounted on a motor handling part.

Description

【発明の詳細な説明】 【０００１】 【産業上の利用分野】この発明は、水回りで使用出来る
防水型ブラシレス直流電動機に関するものである。 【０００２】 【従来の技術】従来モータは水に対して弱く故障の原因
となる事が多く水回りの手作業は機械化が難しく又メン
テナンスが必要だった。 【０００３】 【発明が解決しようとする課題点】したがって水回りで
の作業は機械化になりにくく機械化になった場合でも水
による故障が多くメンテナンスに時間を取られていた。
本発明は、こうした水回りの作業に使え、又メンテナン
スの要らない様発明されたものである。 【０００４】 【課題を解決するための手段】今、その解決手段を図面
を追いながら説明すれば、 （イ） キャップ２に、前面より樹脂カバー９、オイル
シール１０、スペーサ−１２、オイルシール１１の順に
組み込んでいる。 （ロ） 電機子コイル４を樹脂でモールドしてステータ
ーユニット５を形成している。 （ハ） ケース３とステーターユニット５の隙間はシー
ル材１３で密封している。 （ニ） モータ手元部の内部に磁気センサ８を取り付
け、モータ外側に２つのマグネット７がついたスイッチ
リング６をつけている。 【０００５】 【作用】次に本発明の作用を述べると、先端出力軸シー
ル部の構造は図３の様にオイルシール２重構造にしてオ
イルシール１０とオイルシール１１の間にスペーサー１
２をはめてグリスを注入し、オイルシール１０の前面に
はゴミよけの為樹脂カバー９をシャフト１と僅かな隙間
で取り付けオイルシール部へのゴミの侵入を防いでい
る。これにより、ゴミでシャフト及びシールが摩耗する
のを防止し、シール効果を向上させている。又、オイル
シール１０より侵入したゴミが発生しても途中のグリス
及びオイルシール１１により防水することが出来る。可
動部シールが劣化しモータ内部まで水が侵入した場合に
おいても図２の様に電機子コイル４を樹脂でモールドし
てステーターユニット５を形成しケース３に組み込みそ
の隙間はシール材１３で密封し回転部（可動部でシー
ル）と電気部（固定部でのシール）の２重に隔離された
構造となっている。従って、電気部のシールは固定部で
シールされている為シールが完全で水の影響が無く故障
の心配が無い。スイッチ部は、図４の様にモータ手元部
に付けられたスイッチリング６に組み込まれた２つのマ
グネット７による磁気によって内部磁気センサ８でケー
スに穴を明けること無くスイッチの切り替えを行うこと
でスイッチにおいても電気部は完全にシールされている 【０００６】 【発明の効果】オイルシール及びシャフトの摩耗は樹脂
カバーを付けることによってゴミの侵入を防ぐ為摩粍し
にくくなり又、オイルシールの劣化、シャフトの摩耗に
より水が入った場合でも、電気部への水の侵入が無い構
造としている為すぐにモータが停止すること無く動作す
る。水の侵入が無いことはモータは完全に隔離されてい
ることで他の悪条件においても耐久性が有ることにな
る。これより、ほこり等の多い所、油のかかる所、引火
性ガス中、その他の悪条件条件化において使用が可能と
なる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof brushless DC electric motor which can be used around water. 2. Description of the Related Art Conventional motors are vulnerable to water and often cause failures, so that manual work around water is difficult to mechanize and requires maintenance. Therefore, work around water is difficult to mechanize, and even when it becomes mechanized, many failures due to water take time for maintenance.
The present invention has been invented so that it can be used for such work around water and does not require maintenance. Now, the means for solving the problem will be described with reference to the drawings. (A) The cap 2 has a resin cover 9, an oil seal 10, a spacer 12, and an oil seal 11 from the front side. It is incorporated in the order of. (B) The armature coil 4 is molded with resin to form the stator unit 5. (C) The gap between the case 3 and the stator unit 5 is sealed with the sealing material 13. (D) A magnetic sensor 8 is attached inside the motor base, and a switch ring 6 with two magnets 7 is attached outside the motor. Next, the operation of the present invention will be described. The structure of the tip output shaft seal portion is an oil seal double structure as shown in FIG. 3, and a spacer 1 is provided between the oil seal 10 and the oil seal 11.
To prevent dust from entering the front surface of the oil seal 10, a resin cover 9 is attached to the front surface of the oil seal 10 with a slight gap from the shaft 1 to prevent the dust from entering the oil seal portion. This prevents the shaft and the seal from being worn by dust and improves the sealing effect. Further, even if dust that has entered from the oil seal 10 is generated, it can be waterproofed by the grease in the middle and the oil seal 11. Even when the seal of the movable part deteriorates and water enters the inside of the motor, the armature coil 4 is molded with resin to form the stator unit 5 as shown in FIG. It has a structure in which the rotating portion (the movable portion is the seal) and the electric portion (the fixed portion is the seal) are doubly isolated. Therefore, since the seal of the electric part is sealed by the fixed part, the seal is perfect, there is no influence of water, and there is no fear of failure. As shown in FIG. 4, the switch portion is switched by switching the switch without making a hole in the case with the internal magnetic sensor 8 by the magnetism of the two magnets 7 incorporated in the switch ring 6 attached to the motor base portion. Even in the above, the electric part is completely sealed. [Advantage of the Invention] Wear of the oil seal and the shaft is hard to be abraded by attaching a resin cover to prevent intrusion of dust, and deterioration of the oil seal, Even if water gets in due to wear of the shaft, the motor operates without stopping immediately because the structure is such that water does not enter the electric part. The absence of water ingress means that the motor is completely isolated and will be durable under other adverse conditions. As a result, it can be used in a place where there is a lot of dust or the like, a place where oil is present, in a flammable gas, or in other adverse conditions.

【図面の簡単な説明】 【図１】本発明のモータ構造図 【図２】本発明のステーターユニット部断面図 【図３】本発明のキャップ部断面図 【図４】本発明のスイッチ部断面図 【符号の説明】 １…シャフト ２…キャップ ３…ケース ４…電機子コイル ５…ステーターユニット ６…スイッチリング ７…マグネット ８…磁気センサ ９…樹脂カバー １０、１１…オイルシール １２…スペーサー １３…シール材[Brief description of drawings] FIG. 1 is a motor structure diagram of the present invention. FIG. 2 is a sectional view of a stator unit portion of the present invention. FIG. 3 is a sectional view of the cap portion of the present invention. FIG. 4 is a sectional view of a switch portion of the present invention. [Explanation of symbols] 1 ... Shaft 2 ... Cap 3 ... Case 4 ... Armature coil 5 ... Stator unit 6 ... Switch ring 7 ... Magnet 8 ... Magnetic sensor 9 ... Resin cover 10, 11 ... Oil seal 12 ... Spacer 13 ... Sealing material

Claims (1)

【特許請求の範囲】 （イ） 先端出力軸のシール部は、オイルシール２重構
造とし、シール前面に樹脂カバー９を付けた構造のキヤ
ップ２をつける。 （ロ） 電機子コイル４を樹脂でモールドして形成され
たステーターユニット５をケース３で覆い回転部と電気
部を固定構造部において隔離する。 （ハ） スイッチは、モータの手元に付け、その構造
は、磁気センサ８とスイッリング６に取り付けられた２
つのマグネット７によって切り替えし、動作部と電気部
に隔離する。 以上の構成を兼ね備えた防水型ブラシレス直流電動機(A) A seal portion of the tip output shaft has an oil seal double structure, and a cap 2 having a structure in which a resin cover 9 is attached to the front surface of the seal is attached. (B) The stator unit 5 formed by molding the armature coil 4 with resin is covered with the case 3 to separate the rotating part and the electric part in the fixed structure part. (C) The switch is attached to the hand of the motor, and its structure is 2 attached to the magnetic sensor 8 and the switching 6.
Switching is performed by two magnets 7 to separate the operating part and the electric part. Waterproof brushless DC motor with the above configuration
JP10835892A 1992-03-16 1992-03-16 Waterproof brushless direct-current motor Pending JPH06153478A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10835892A JPH06153478A (en) 1992-03-16 1992-03-16 Waterproof brushless direct-current motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10835892A JPH06153478A (en) 1992-03-16 1992-03-16 Waterproof brushless direct-current motor

Publications (1)

Publication Number Publication Date
JPH06153478A true JPH06153478A (en) 1994-05-31

Family

ID=14482708

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10835892A Pending JPH06153478A (en) 1992-03-16 1992-03-16 Waterproof brushless direct-current motor

Country Status (1)

Country Link
JP (1) JPH06153478A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021516323A (en) * 2018-03-26 2021-07-01 ジン−ジン エレクトリック テクノロジーズ カンパニー リミテッド Seal structure of motor shaft extension end

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021516323A (en) * 2018-03-26 2021-07-01 ジン−ジン エレクトリック テクノロジーズ カンパニー リミテッド Seal structure of motor shaft extension end
US11444505B2 (en) 2018-03-26 2022-09-13 Jing-Jin Electric Technologies Co., Ltd. Sealing structure of electric-machine-shaft extension end

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