JPH0522897A - Vehicle alternator - Google Patents
Vehicle alternatorInfo
- Publication number
- JPH0522897A JPH0522897A JP3172150A JP17215091A JPH0522897A JP H0522897 A JPH0522897 A JP H0522897A JP 3172150 A JP3172150 A JP 3172150A JP 17215091 A JP17215091 A JP 17215091A JP H0522897 A JPH0522897 A JP H0522897A
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- pulley
- generator
- load
- rotor
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/08—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with two or more rows of balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/063—Fixing them on the shaft
Landscapes
- Synchronous Machinery (AREA)
- Rolling Contact Bearings (AREA)
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
(57)【要約】
【目的】本発明は、プーリの高荷重に対して耐久性を有
する発電機を提供するものであり、基本構造を変えずに
現用技術である複式軸受を使用してより高い耐久性を確
保するものである。
【構成】回転子両端を軸受で保持しブラケットにより固
定子とともに保持される発電機において、プーリ側軸受
を複式軸受としプーリ開口部を回転子側に向けプーリの
荷重位置の軸方向中心とプーリ側軸受の軸方向中心を一
致させた構成とする。
【効果】現行発電機の基本構造を変えないでより高い軸
受の耐久性を確保できる。
(57) [Summary] [Object] The present invention provides a generator having durability against a high load of a pulley, and it is more advantageous to use a dual bearing which is an existing technology without changing the basic structure. It ensures high durability. [Structure] In a generator in which both ends of a rotor are held by bearings and are held together with a stator by brackets, the pulley side bearing is a double-sided bearing with the pulley opening facing the rotor and the axial center of the pulley load position and the pulley side. The bearings have the same axial center. [Effect] Higher durability of the bearing can be secured without changing the basic structure of the current generator.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、車両用交流発電機（以
下発電機と称す）に係り、特に複式軸受を採用する発電
機を構成することに好適な構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle AC generator (hereinafter referred to as a generator), and more particularly to a structure suitable for constructing a generator that employs a double bearing.
【０００２】[0002]
【従来の技術】従来の発電機は特開昭63−121455号に記
載の様に、プーリ側軸受は単式玉軸受を使用し、更にプ
ーリはプーリ側軸受よりシャフト前方に位置していたた
め、プーリの荷重位置の軸方向中心はプーリ側軸受の軸
方向中心よりシャフト前方に位置していた。2. Description of the Related Art A conventional generator uses a single ball bearing as a pulley side bearing as described in JP-A-63-121455, and the pulley is located in front of the pulley side bearing. The axial center of the load position was located in front of the shaft with respect to the axial center of the pulley-side bearing.
【０００３】[0003]
【発明が解決しようとする課題】軸受寿命を支配する軸
受荷重は数１により求められる。The bearing load, which governs the life of the bearing, is calculated by the equation (1).
【０００４】 ＦＢ＝（Ｌ１＋Ｌ２）ＦＰ／Ｌ２ …（数１） ＦＢ：プーリ側軸受荷重 ＦＰ：プーリ荷重 Ｌ１：プーリ荷重位置中心からプーリ側軸受中心までの
距離 Ｌ２：プーリ側軸受中心からリアエンド側軸受中心まで
の距離 軸受荷重は数１より、プーリ荷重とプーリからリアエン
ド側軸受までの距離に比例し軸受間の距離に反比例す
る。FB = (L1 + L2) FP / L2 (Equation 1) FB: Bearing load on pulley side FP: Pulley load L1: Distance from center of pulley load position to center of pulley side bearing L2: Bearing from pulley side bearing to rear end side bearing Distance to the center Since the bearing load is from Equation 1, it is proportional to the pulley load and the distance from the pulley to the rear end side bearing, and inversely proportional to the distance between the bearings.
【０００５】現在車両用エンジンの補機駆動用ベルトは
従来のＶ型ベルトからポリＶベルトに変わってきており
従来に比べプーリに加わる荷重は高くなる傾向にある。At present, the auxiliary drive belt of the vehicle engine has been changed from the conventional V-shaped belt to the poly V belt, and the load applied to the pulley tends to be higher than that of the conventional belt.
【０００６】加えて、エンジンに装着される数個の補機
の駆動を一本のベルトで行うサーペンタインシステムが
近年採用される方向にあり発電機の軸受に対する耐荷重
性を向上する必要性が増してきた。In addition, a serpentine system for driving several accessories mounted on an engine with a single belt is being adopted in recent years, and it is necessary to improve load bearing capacity of a bearing of a generator. Came.
【０００７】発電機の軸受寿命を延長するために従来よ
り軸受のサイズＵＰや軸受の材質の変更を行ってきた
が、軸受サイズは外径及び内径に発電機構造からの制約
を受け、軸受の材質も特殊な材質になると価格上の問題
がありおのずと限界が有った。そこで外径及び内径が同
一の場合において許容荷重が単式軸受より高い複式軸受
の採用が考えられるが、プーリの荷重位置がプーリ側軸
受より前方に位置すると複式軸受の転動体や内輪外輪の
軌道面への荷重が不均一になり最悪片側の転動体や軌道
面に荷重が集中するため高荷重に対し軸受寿命を比較す
ると単式軸受を使用した場合より不利になり複式軸受を
使用する効果が無いという問題が有った。Conventionally, in order to extend the bearing life of the generator, the bearing size UP and the bearing material have been changed. However, the bearing size is restricted by the generator structure in the outer diameter and the inner diameter, and As for the material, there was a price problem when it came to a special material, and naturally there was a limit. Therefore, if the outer diameter and inner diameter are the same, it is possible to use a double bearing with a higher allowable load than a single bearing.However, if the load position of the pulley is located in front of the pulley side bearing, the rolling elements of the double bearing and the raceway of the inner and outer rings Since the load on the bearing is uneven and the load concentrates on the rolling element or raceway on one side in the worst case, comparing the bearing life with a high load is more disadvantageous than using a single bearing and there is no effect of using a double bearing. There was a problem.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、従来シャフト前方に向けられていたプーリの開口部
を回転子側に向けてプーリの荷重位置とプーリ側軸受位
置の関係を変えた。In order to achieve the above object, the relationship between the load position of the pulley and the bearing position on the pulley side was changed by directing the opening of the pulley, which was conventionally directed toward the front of the shaft, toward the rotor. ..
【０００９】[0009]
【作用】プーリ荷重の軸方向中心位置とプーリ側軸受の
軸方向中心位置を一致させることで軸受へ加わる荷重を
減らせる為軸受の耐久性が向上する。[Function] By matching the axial center position of the pulley load with the axial center position of the pulley side bearing, the load applied to the bearing is reduced and the durability of the bearing is improved.
【００１０】[0010]
【実施例】以下、本発明の実施例を図１，図２により説
明する。Embodiments of the present invention will be described below with reference to FIGS.
【００１１】図１は、本発明による発電機を、図２は本
発明による軸受部とプーリ部の詳細を示す。FIG. 1 shows a generator according to the present invention, and FIG. 2 shows details of a bearing portion and a pulley portion according to the present invention.
【００１２】回転子４はシャフト５両端を軸受１，６に
より保持され該軸受１，６はブラケット２，７により固
定子８とともに保持されている。The rotor 4 has both ends of the shaft 5 held by bearings 1 and 6, and the bearings 1 and 6 are held together with a stator 8 by brackets 2 and 7.
【００１３】プーリ側軸受１は２個の転動体１−２（本
図では玉軸受を例にしているため鋼球である）と内輪１
−３，外輪１−４，シール１−５により構成されてい
る。The pulley-side bearing 1 is composed of two rolling elements 1-2 (which are steel balls because a ball bearing is used as an example in this figure) and an inner ring 1.
-3, outer ring 1-4, seal 1-5.
【００１４】前記プーリ側軸受１はプーリ側ブラケット
２に圧入保持されリテーナ３により軸受外輪部を軸方向
に固定されている。プーリ９の端面９−１はプーリ側軸
受１の内輪１−３に接触し端面９−２側をナット１０，
ワッシャ１１により締め付けられており回転子シャフト
５に固定されている。The pulley-side bearing 1 is press-fitted and held in a pulley-side bracket 2 and a bearing outer ring portion is axially fixed by a retainer 3. The end surface 9-1 of the pulley 9 comes into contact with the inner ring 1-3 of the pulley side bearing 1, and the end surface 9-2 side is fitted with the nut 10,
It is fastened by a washer 11 and fixed to the rotor shaft 5.
【００１５】前記プーリ９は椀状になっており開口部９
−３は回転子４側を向いている。The pulley 9 is bowl-shaped and has an opening 9
-3 faces the rotor 4 side.
【００１６】組み合わせられるプーリ側ブラケット２の
軸受保持部２−１はプーリ９の開口部９−３の内径部９
−４と間隔を保持しプーリ回転時は接触しない構造とな
っている。又、プーリ部寸法Ｌ３と軸受部寸法Ｌ４は同
一とする。The bearing holding portion 2-1 of the pulley side bracket 2 to be assembled is the inner diameter portion 9 of the opening 9-3 of the pulley 9.
It has a structure that keeps a distance from -4 and does not contact when the pulley rotates. The pulley size L3 and the bearing size L4 are the same.
【００１７】以上により、プーリの荷重位置軸方向中心
とプーリ側軸受軸方向中心は一致する発電機を構成す
る。As described above, the generator in which the axial center of the load position of the pulley and the axial center of the pulley side bearing constitute the generator.
【００１８】[0018]
【発明の効果】本発明に依れば、現在の発電機の基本構
造を変えずに高荷重に対し余裕を持った発電機を構成で
きる為、軸受の耐久性が好転する効果が有る。According to the present invention, it is possible to construct a generator having a margin for a high load without changing the basic structure of the current generator, so that the durability of the bearing is improved.
【図１】本発明の実施例を示す図である。FIG. 1 is a diagram showing an embodiment of the present invention.
【図２】本発明による軸受とプーリの詳細図である。FIG. 2 is a detailed view of a bearing and pulley according to the present invention.
１…プーリ側軸受、２…プーリ側ブラケット、４…回転
子、９…プーリ。1 ... pulley side bearing, 2 ... pulley side bracket, 4 ... rotor, 9 ... pulley.
Claims (1)
に締結されたプーリによりエンジンで駆動される車両用
交流発電機において、転動体が２個よりなる軸受（以下
複式軸受と称す）を回転子のプーリ側に設け、さらにプ
ーリの荷重位置の軸方向中心と前記軸受の軸方向中心を
合わせたことを特徴とする車両用交流発電機。Claim: What is claimed is: 1. A vehicle alternator in which both ends of a rotor are held by a pair of bearings and which is driven by an engine by a pulley fastened to the rotor. A bearing having two rolling elements. An alternating current generator for a vehicle, characterized in that (hereinafter referred to as a double bearing) is provided on the pulley side of the rotor, and the axial center of the load position of the pulley is aligned with the axial center of the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3172150A JPH0522897A (en) | 1991-07-12 | 1991-07-12 | Vehicle alternator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3172150A JPH0522897A (en) | 1991-07-12 | 1991-07-12 | Vehicle alternator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0522897A true JPH0522897A (en) | 1993-01-29 |
Family
ID=15936496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3172150A Pending JPH0522897A (en) | 1991-07-12 | 1991-07-12 | Vehicle alternator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0522897A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0671801A3 (en) * | 1994-03-11 | 1995-10-25 | Nippon Denso Co | |
| US5726511A (en) * | 1995-05-29 | 1998-03-10 | Nippondenso Co., Ltd. | Rotary machine having water-resistant structure |
| CN1045850C (en) * | 1992-07-09 | 1999-10-20 | 精工爱普生株式会社 | Brushless electric machine |
| EP1199785A1 (en) * | 2000-10-17 | 2002-04-24 | Mitsubishi Denki Kabushiki Kaisha | Automotive alternator bearing |
| JP2008048501A (en) * | 2006-08-11 | 2008-02-28 | Denso Corp | Brushless AC generator for vehicles |
| US20190252943A1 (en) * | 2016-09-09 | 2019-08-15 | Jing-Jin Electric Technologies Co., Ltd. | Input shaft structure having connected motor and speed reducer |
-
1991
- 1991-07-12 JP JP3172150A patent/JPH0522897A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045850C (en) * | 1992-07-09 | 1999-10-20 | 精工爱普生株式会社 | Brushless electric machine |
| EP0671801A3 (en) * | 1994-03-11 | 1995-10-25 | Nippon Denso Co | |
| US5726511A (en) * | 1995-05-29 | 1998-03-10 | Nippondenso Co., Ltd. | Rotary machine having water-resistant structure |
| CN1044181C (en) * | 1995-05-29 | 1999-07-14 | 日本电装株式会社 | Rotating machinery with waterproof structure |
| EP1199785A1 (en) * | 2000-10-17 | 2002-04-24 | Mitsubishi Denki Kabushiki Kaisha | Automotive alternator bearing |
| US6573631B2 (en) | 2000-10-17 | 2003-06-03 | Mitsubishi Denki Kabushiki Kaisha | Automotive alternator |
| JP2008048501A (en) * | 2006-08-11 | 2008-02-28 | Denso Corp | Brushless AC generator for vehicles |
| US20190252943A1 (en) * | 2016-09-09 | 2019-08-15 | Jing-Jin Electric Technologies Co., Ltd. | Input shaft structure having connected motor and speed reducer |
| US10886818B2 (en) * | 2016-09-09 | 2021-01-05 | Jing-Jin Electric Technologies Co., Ltd. | Input shaft structure having connected motor and speed reducer |
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