JPH0736683B2 - Eccentric type vacuum pump generator - Google Patents

Eccentric type vacuum pump generator

Info

Publication number
JPH0736683B2
JPH0736683B2 JP59092114A JP9211484A JPH0736683B2 JP H0736683 B2 JPH0736683 B2 JP H0736683B2 JP 59092114 A JP59092114 A JP 59092114A JP 9211484 A JP9211484 A JP 9211484A JP H0736683 B2 JPH0736683 B2 JP H0736683B2
Authority
JP
Japan
Prior art keywords
vacuum pump
seal
rotary shaft
oil
spline
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
JP59092114A
Other languages
Japanese (ja)
Other versions
JPS60237830A (en
Inventor
一彦 山室
中人 村田
Original Assignee
日本電装株式会社
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 日本電装株式会社 filed Critical 日本電装株式会社
Priority to JP59092114A priority Critical patent/JPH0736683B2/en
Publication of JPS60237830A publication Critical patent/JPS60237830A/en
Publication of JPH0736683B2 publication Critical patent/JPH0736683B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、偏心型眞空ポンプ付発電機に関し、特に自動
車において制動倍力装置などに必要な眞空を供与する回
転式眞空ポンプと交流発電機とを同軸線上に結合し、共
通して駆動するもののシール構造に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a generator with an eccentric type vacuum pump, and more particularly, to a rotary vacuum pump and an AC generator for supplying a vacuum required for a braking booster or the like in an automobile. The present invention relates to a seal structure in which and are coupled on a coaxial line and commonly driven.

(従来技術) 従来の偏心型眞空ポンプ付発電機の構造は、第1図にそ
の部分縦断面図を示す如くで、給油された潤滑油をポン
プ内に導く油圧制御部8d、及びこの油制御部8dに隣接す
るオイルシール10がはめ合わされている部分の回転軸径
がほぼ等しいため、油が前記油制御部8dからオイルシー
ル10に流入しやすく、このオイルシール部の圧力が使用
限界0.3kg/cm2以下を上回ったり汚れた油(一般にエン
ジンオイルを使用しているためスラッジ,カーボン粉が
多量に含まれている)を直接運んだりしてオイルシール
10のシール面(シールリップ)の摩耗促進、異常摩耗を
起こし油洩れに至らしめる恐れがあるという問題があ
る。また、前記オイルシール10の回転軸径と回転軸のス
プライン部8c径が同様にほぼ等しいため、組付時、この
スプライン部8cにてオイルシール10のリップを傷付けて
しまうことがあるという問題もある。
(Prior Art) The structure of a conventional generator with an eccentric type vacuum pump is as shown in the partial longitudinal sectional view of FIG. 1, in which a hydraulic control unit 8d for guiding the supplied lubricating oil into the pump, and this oil control. Since the rotating shaft diameter of the portion where the oil seal 10 adjacent to the portion 8d is fitted is almost equal, oil easily flows into the oil seal 10 from the oil control portion 8d, and the pressure of this oil seal portion is 0.3 kg. / cm 2 or less, or directly carry dirty oil (generally contains a large amount of sludge and carbon powder because engine oil is used), and oil seal
There is a problem that 10 seal surfaces (seal lips) may be accelerated and abnormally worn, leading to oil leakage. Further, since the diameter of the rotary shaft of the oil seal 10 and the diameter of the spline portion 8c of the rotary shaft are substantially equal to each other, there is a problem that the lip of the oil seal 10 may be damaged by the spline portion 8c during assembly. is there.

(本発明の目的) 本発明は、上記の問題点に鑑み、回転軸にはめ合わされ
たオイルシールのシール面(シールリップ)を異常摩耗
させたり損傷する恐れのないシール構造を有する偏心型
眞空ポンプ付発電機を提供することを目的とするもので
ある。
(Object of the Invention) In view of the above problems, the present invention has an eccentric type vacuum pump having a seal structure that does not cause abnormal wear or damage to the seal surface (seal lip) of an oil seal fitted to a rotary shaft. The purpose is to provide an attached generator.

(本発明の構成) 本発明は、偏心型回転式眞空ポンプの回転軸と交流発電
機の回転軸とを同軸線上に結合し、共通して駆動する偏
心型眞空ポンプ付発電機において、 前記偏心型眞空ポンプの回転軸は、一端側に設けられた
スプライン部,他端側に設けられた支持部,この支持部
と前記スプライン部との間に設けられた油圧制御部及び
この油圧制御部と前記支持部との設けられたシール部を
有し、前記スプライン部によって前記交流発電機の回転
軸に対して結合されると共に、前記支持部によって軸受
を介してケーシングに付して回転自在に支持されてお
り、かつ前記シール部によってオイルシールを介して前
記ケーシングとの機密性が保たれており、 前記シール部の外径は、前記スプライン部及び前記油圧
制御部の外径より大径に形成されており、 前記シール部の軸方向端部に当接して前記偏心型眞空ポ
ンプの回転軸の軸方向の移動を規制する規制部がケーシ
ングに対して固定されているように構成したものであ
る。
(Structure of the present invention) The present invention relates to a generator with an eccentric type vacuum pump, in which a rotary shaft of an eccentric rotary vacuum pump and a rotary shaft of an AC generator are coaxially coupled and commonly driven. The rotary shaft of the mold vacuum pump includes a spline portion provided at one end side, a support portion provided at the other end side, a hydraulic control portion provided between the support portion and the spline portion, and the hydraulic control portion. It has a seal portion provided with the support portion, is coupled to the rotating shaft of the AC generator by the spline portion, and is rotatably supported by the support portion by being attached to a casing through a bearing. And the airtightness with the casing is maintained by the seal portion via an oil seal, and the outer diameter of the seal portion is formed to be larger than the outer diameters of the spline portion and the hydraulic pressure control portion. Done Cage, regulating portion for regulating the movement in the axial direction of the rotation axis of the eccentric Makotosora pump in contact with the axial end of the seal portion is obtained by construction as fixed relative to the casing.

(実施例) 以下、本発明を図に示す実施例について説明する。第2
図は本発明になる偏心型眞空ポンプ付発電機の一実施例
の構成を示す縦断面図で、眞空ポンプ1は発電機2とプ
ーリ3との間に配置されており、眞空ポンプ1のケーシ
ング4と発電機2のフレーム17にはそれぞれインロー部
4a,17aが設けられていて、ボルト21によりプレート7を
挟んで結合されている。眞空ポンプ1の回転軸8は前記
ケーシング4に設けられた軸受9にて支持され、潤滑油
のオイル穴8a,8bが設けられているとともに先端にはス
プライン部8cが形成されていて眞空ポンプ1のロータ5
がはめ合わされている。また、中心部にブッシングシャ
フト13と回転軸18を有した発電機2の回転子19は発電機
の両フレーム17,18に設けられた各々の軸受14,15にて支
持されており、このブッシングシャフト13には眞空ポン
プ1側の回転軸8に設けたスプライン部8cに対応する雌
側スプライン部13aが成形されており、両スプライン部
が嵌合している。また、回転軸8は油制御部8d及びスプ
ライン部8cに対し軸径を大きくしたシール部8eを有し、
このシール部8eとケーシング4に設けられたオイルシー
ル10とでシール面を回転軸8は、シール部8eの端部8fが
ケーシング端部(規制部)4c及び軸受の端部(規制部)
9aに当接して軸方向の移動が規制されることにより、軸
方向に位置決めされる。なお、前記オイルシール10以外
にも眞空ポンプ用潤滑油の漏れ防止、シール性確保のた
め、オイルシール16、Oリング11,20がそれぞれ設けら
れている。
(Example) Hereinafter, the Example which shows this invention in a figure is demonstrated. Second
FIG. 1 is a vertical cross-sectional view showing a configuration of an embodiment of an eccentric type vacuum pump generator according to the present invention, in which a vacuum pump 1 is arranged between a generator 2 and a pulley 3, and a casing of the vacuum pump 1 is provided. 4 and the frame 17 of the generator 2 have spigot parts respectively
4a and 17a are provided, and they are connected to each other with the plate 7 sandwiched by bolts 21. The rotary shaft 8 of the vacuum pump 1 is supported by a bearing 9 provided in the casing 4, oil holes 8a and 8b for lubricating oil are provided, and a spline portion 8c is formed at the tip thereof. The rotor 5
Are fitted together. Further, the rotor 19 of the generator 2 having the bushing shaft 13 and the rotating shaft 18 at the center is supported by bearings 14 and 15 provided on both frames 17 and 18 of the generator. A female side spline portion 13a corresponding to the spline portion 8c provided on the rotary shaft 8 on the side of the vacuum pump 1 is formed on the shaft 13, and both spline portions are fitted to each other. Further, the rotary shaft 8 has a seal portion 8e having a larger shaft diameter than the oil control portion 8d and the spline portion 8c,
The rotary shaft 8 has a sealing surface formed by the seal portion 8e and the oil seal 10 provided in the casing 4, and the end portion 8f of the seal portion 8e has a casing end portion (regulating portion) 4c and a bearing end portion (regulating portion).
By abutting against 9a and restricting movement in the axial direction, positioning is performed in the axial direction. In addition to the oil seal 10, an oil seal 16 and O-rings 11 and 20 are provided to prevent leakage of the lubricating oil for the vacuum pump and to secure the sealing property.

次に、上記構成の本発明偏心型眞空ポンプ付発電機の作
動について説明すると、図示しないエンジンよりの回転
トルクは、プーリ3を介して軸受9にて支持された眞空
ポンプ1内の回転軸より、この回転軸8及び発電機2の
回転子19に設けられたスプライン部8c,13aを通して回転
子19の回転軸12に伝達される。その際、眞空ポンプ1内
のケーシング4,ロータ5,ブレード6で仕切られた室にて
周知の空気の吸入,排出作用が行なわれる。また、眞空
ポンプ用潤滑油はケーシング4に設けられた給油口4bか
ら回転軸8のオイル穴8a,8bを通り、眞空ポンプ内及び
回転軸8,ブッシングシャフト13のスプライン部8c,13aに
流入し、両部分の潤滑を行う。一方前記油は回転軸8と
オイルシール10とで形成されるシール面を潤滑するため
油制御部8dからシール部8eを介しオイルシール10内に流
入する。
Next, the operation of the eccentric type pneumatic pump-equipped generator of the present invention having the above-described structure will be described. Rotational torque from the engine (not shown) is generated from the rotating shaft in the pneumatic pump 1 supported by the bearing 9 via the pulley 3. Is transmitted to the rotary shaft 12 of the rotor 19 through the spline portions 8c and 13a provided on the rotary shaft 8 and the rotor 19 of the generator 2. At that time, a well-known air intake / exhaust action is performed in a chamber partitioned by the casing 4, the rotor 5, and the blade 6 in the vacuum pump 1. Further, the lubricating oil for the vacuum pump flows from the oil supply port 4b provided in the casing 4 through the oil holes 8a, 8b of the rotary shaft 8 into the vacuum pump and the rotary shaft 8, and the spline portions 8c, 13a of the bushing shaft 13. , Lubricate both parts. On the other hand, the oil flows into the oil seal 10 from the oil control portion 8d through the seal portion 8e in order to lubricate the sealing surface formed by the rotary shaft 8 and the oil seal 10.

(本発明の効果) 本発明は、回転軸の油制御部及びスプライン部に対しシ
ール部の軸径を大きくしてあるため、汚れた油をオイル
シールに運ぶことがなく、オイルシールの摩耗を防止
し、流入する油もシール面の潤滑に必要な量まで低減す
ることができるという効果が大である。
(Effect of the present invention) In the present invention, since the shaft diameter of the seal part is larger than that of the oil control part and the spline part of the rotary shaft, dirty oil is not carried to the oil seal, and wear of the oil seal is prevented. It has a great effect that the oil can be prevented and the inflowing oil can be reduced to an amount necessary for lubricating the sealing surface.

また、オイルシールの組付け時、スプライン部によりオ
イルシールのリップが傷付けられることもないという効
果があり、さらにオイルシールを挿入する回転軸のシー
ル部の段付き部にて該回転軸の軸方向の位置決めを行う
ため眞空ポンプ付発電機を特に軸方向において小型化す
ることができるという効果がある。
In addition, the lip of the oil seal is not damaged by the spline part when the oil seal is assembled, and the stepped part of the seal part of the rotary shaft into which the oil seal is inserted causes the axial direction of the rotary shaft. Since the positioning is performed, there is an effect that the generator with a vacuum pump can be downsized particularly in the axial direction.

【図面の簡単な説明】[Brief description of drawings]

第1図は従来の偏心型眞空ポンプ付発電機の部分縦断面
図、第2図は本発明になる偏心型眞空ポンプ付発電機の
一実施例の構成を示す縦断面図で、図中同一符号は同一
又は均等部分を示す。 1……偏心型眞空ポンプ、2……発電機、3……プー
リ、8,12……回転軸、10……オイルシール、8e……回転
軸8のシール部、8f……段付部、4b……給油口、8d……
油制御部、8c,13a……スプライン部。
FIG. 1 is a partial vertical cross-sectional view of a conventional generator with an eccentric type vacuum pump, and FIG. 2 is a vertical cross-sectional view showing a configuration of an embodiment of an eccentric type vacuum pump-equipped generator according to the present invention. The reference numerals indicate the same or equivalent parts. 1 ... eccentric type vacuum pump, 2 ... generator, 3 ... pulley, 8,12 ... rotary shaft, 10 ... oil seal, 8e ... seal part of rotary shaft 8, 8f ... stepped part, 4b …… Refueling port, 8d ……
Oil control section, 8c, 13a ... Spline section.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】偏心型眞空ポンプ(1)の回転軸(8)と
交流発電機(2)の回転軸(12)とを同軸線上に結合
し、共通して駆動する偏心型眞空ポンプ付発電機におい
て、 前記偏心型眞空ポンプ(1)の回転軸(8)は、一端に
設けられたスプライン部(8c),他端側に設けられた支
持部(8g),この支持部(8g)と前記スプライン部(8
c)との間に設けられた油圧制御部(8d)及びこの油圧
制御部(8d)と前記支持部(8g)との間に設けられたシ
ール部(8e)を有し、前記スプライン部(8c)によって
前記交流発電機(2)の回転軸(12)に対して結合され
ると共に、前記支持部(8g)によって軸受(9)を介し
てケーシング(4)に対して回転自在に支持されてお
り、かつ前記シール部(8e)によってオイルシール(1
0)を介して前記ケーシング(4)との機密性が保たれ
ており、 前記シール部(8e)の外径は、前記スプライン部(8c)
及び前記油圧制御部(8d)の外径より大径に形成されて
おり、 前記シール部(8e)の軸方向端部(8f)に当接して前記
偏心型眞空ポンプ(1)の回転軸(8)の軸方向の移動
を規制する規制部(4c,9a)がケーシング(4)に対し
て固定されていることを特徴とする偏心型眞空プンプ付
発電機。
1. A power generation system with an eccentric vacuum pump (1), wherein a rotary shaft (8) of an eccentric vacuum pump (1) and a rotary shaft (12) of an AC generator (2) are coaxially coupled and driven in common. In the machine, the rotating shaft (8) of the eccentric type vacuum pump (1) has a spline portion (8c) provided at one end, a support portion (8g) provided at the other end side, and a support portion (8g). The spline part (8
c) has a hydraulic control section (8d) provided between the hydraulic control section (8d) and the support section (8g) and a seal section (8e) provided between the spline section (8e). 8c) is coupled to the rotating shaft (12) of the alternator (2) and is rotatably supported by the supporting portion (8g) with respect to the casing (4) via a bearing (9). And the oil seal (1
0) and the casing (4) is kept airtight, and the outer diameter of the seal portion (8e) is the spline portion (8c).
And a larger diameter than the outer diameter of the hydraulic control section (8d), and is in contact with the axial end (8f) of the seal section (8e) to rotate the rotary shaft of the eccentric vacuum pump (1) ( An eccentric type generator with a pneumatic pump, characterized in that a regulating portion (4c, 9a) for regulating axial movement of 8) is fixed to the casing (4).
JP59092114A 1984-05-08 1984-05-08 Eccentric type vacuum pump generator Expired - Fee Related JPH0736683B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59092114A JPH0736683B2 (en) 1984-05-08 1984-05-08 Eccentric type vacuum pump generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59092114A JPH0736683B2 (en) 1984-05-08 1984-05-08 Eccentric type vacuum pump generator

Publications (2)

Publication Number Publication Date
JPS60237830A JPS60237830A (en) 1985-11-26
JPH0736683B2 true JPH0736683B2 (en) 1995-04-19

Family

ID=14045403

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59092114A Expired - Fee Related JPH0736683B2 (en) 1984-05-08 1984-05-08 Eccentric type vacuum pump generator

Country Status (1)

Country Link
JP (1) JPH0736683B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001235035A (en) * 2000-02-22 2001-08-31 Nec Kansai Ltd Shaft sealing device
KR100401074B1 (en) * 2001-11-16 2003-10-10 발레오만도전장시스템스코리아 주식회사 Alternator equipped vacuum pump

Also Published As

Publication number Publication date
JPS60237830A (en) 1985-11-26

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