JPH06153446A - Bearing device for motor - Google Patents
Bearing device for motorInfo
- Publication number
- JPH06153446A JPH06153446A JP4319255A JP31925592A JPH06153446A JP H06153446 A JPH06153446 A JP H06153446A JP 4319255 A JP4319255 A JP 4319255A JP 31925592 A JP31925592 A JP 31925592A JP H06153446 A JPH06153446 A JP H06153446A
- Authority
- JP
- Japan
- Prior art keywords
- recess
- bearing
- preload spring
- ball bearing
- electric motor
- 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.)
- Granted
Links
- 230000036316 preload Effects 0.000 claims abstract description 20
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 1
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
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/06—Ball or roller bearings
- F16C25/08—Ball or roller bearings self-adjusting
- F16C25/083—Ball or roller bearings self-adjusting with resilient means acting axially on a race ring to preload the bearing
-
- 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
- F16C19/06—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 a single row or 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電動機の軸受装置、特に
予圧バネの破壊を防止できる電動機の軸受装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing device for an electric motor, and more particularly to a bearing device for an electric motor capable of preventing the preload spring from breaking.
【０００２】[0002]
【従来の技術】図３は従来の電動機を示し、１は回転子
軸、２はこの回転子軸１を支持するボールベアリング、
３は電動機カバー、２ａ，２ｂは夫々ボールベアリング
２を構成する外輪及び内輪であって、この内輪２ｂは上
記回転子軸１に固定され、上記外輪２ａは上記電動機カ
バー３に形成されたくぼみ３ａ内に軸方向に若干移動自
在なるよう配置され、このくぼみ３ａの側面とこれに対
向する上記ボールベアリング２の外輪２ａの側面間には
予圧バネ４が介挿され、これによって上記回転子軸１の
軸方向の振動が抑制されるように構成されている。2. Description of the Related Art FIG. 3 shows a conventional electric motor, 1 is a rotor shaft, 2 is a ball bearing for supporting the rotor shaft 1,
Reference numeral 3 is an electric motor cover, and 2a and 2b are an outer ring and an inner ring respectively constituting a ball bearing 2. The inner ring 2b is fixed to the rotor shaft 1 and the outer ring 2a is a recess 3a formed in the electric motor cover 3. A preload spring 4 is interposed between the side surface of the recess 3a and the side surface of the outer ring 2a of the ball bearing 2 which faces the recess 3a so as to be movable in the axial direction. Is configured to suppress vibration in the axial direction.
【０００３】[0003]
【発明が解決しようとする課題】然しながら、上記従来
の電動機の構成では、大きな軸方向の荷重が回転子軸１
に加わると予圧バネ４がその応力限界を越えた全圧縮に
近い状態まで圧縮され予圧バネが破壊されるようになる
欠点があった。However, in the configuration of the conventional electric motor described above, a large axial load is applied to the rotor shaft 1.
However, there is a drawback that the preload spring 4 is compressed to a state close to the full compression exceeding its stress limit and the preload spring is broken.
【０００４】本発明は上記の欠点を除くようにしたもの
である。The present invention is designed to eliminate the above drawbacks.
【０００５】[0005]
【課題を解決するための手段】本発明の電動機の軸受装
置は、電動機の回転子軸を支承するボールベアリングの
外輪を支持するため電動機カバーに形成したくぼみと、
このくぼみの側面とこれに対向する上記外輪の側面間に
介挿した予圧バネと、上記くぼみの側面からこれに対向
する上記ボールベアリングの内輪の側面に向かって延び
る突起とより成り、上記予圧バネが応力限界以上に圧縮
される前に上記突起の端面と上記内輪の側面が接するよ
うになることを特徴とする。SUMMARY OF THE INVENTION A motor bearing device according to the present invention includes a recess formed in a motor cover for supporting an outer ring of a ball bearing that supports a rotor shaft of the motor.
The preload spring comprises a preload spring interposed between a side surface of the recess and a side surface of the outer ring facing the recess, and a protrusion extending from a side surface of the recess toward a side surface of the inner ring of the ball bearing opposed thereto. The end surface of the protrusion and the side surface of the inner ring come into contact with each other before being compressed above the stress limit.
【０００６】[0006]
【実施例】以下図面によって本発明の実施例を説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【０００７】本発明においては図１，図２に示すように
ボールベアリング２を収納する電動機カバー３のくぼみ
３ａの側面に突起５を形成し、この突起５の先端を上記
ボールベアリング２の内輪２ｂの側面に対向せしめ、こ
の突起５の突出長さは、電動機が静止している状態では
上記突起５の先端はボールベアリング２の内輪２ｂの側
面とは接触ないが、電動機が回転して回転子軸１に軸方
向の力が加わり、上記予圧バネ４が圧縮されたとき、上
記予圧バネ４がその応力限界を越えて圧縮される前に接
触する大きさとする。In the present invention, as shown in FIGS. 1 and 2, a protrusion 5 is formed on the side surface of the recess 3a of the motor cover 3 for accommodating the ball bearing 2, and the tip of the protrusion 5 is the inner ring 2b of the ball bearing 2. The protrusion length of the protrusion 5 is such that the tip of the protrusion 5 does not come into contact with the side face of the inner ring 2b of the ball bearing 2 when the electric motor is stationary, but the electric motor rotates to rotate the rotor. When an axial force is applied to the shaft 1 and the preload spring 4 is compressed, the preload spring 4 contacts the shaft 1 before exceeding its stress limit and before being compressed.
【０００８】本発明の電動機の軸受装置は上記のような
構成であるから、回転子軸１に軸方向の荷重が加わって
予圧バネ４が圧縮されるようになっても、その全圧縮さ
れる状態の前にボールベアリング２の内輪２ｂの側面に
上記突起５が接触するから、予圧バネ４はそれ以上圧縮
されることがなく、従って予圧バネ４の破壊が防止され
るようになる。Since the bearing device for an electric motor according to the present invention has the above-described structure, even if the preload spring 4 is compressed by the axial load applied to the rotor shaft 1, the preload spring 4 is fully compressed. Since the protrusion 5 contacts the side surface of the inner ring 2b of the ball bearing 2 before the state, the preload spring 4 is not compressed any more, and therefore the preload spring 4 is prevented from being broken.
【０００９】[0009]
【発明の効果】上記のように本発明の電動機の軸受装置
におれば軸受部のボールベアングに適切な予圧を加える
ことが出来るとともに過大な軸方向交番荷重による予圧
バネの破壊を未然に防ぐことができる大きな利益があ
る。As described above, according to the bearing device for an electric motor of the present invention, it is possible to apply an appropriate preload to the ball bearing of the bearing portion and prevent the preload spring from being broken due to an excessive alternating load in the axial direction. There are great benefits you can make.
【図１】本発明の電動機の軸受装置の説明用断面図であ
る。FIG. 1 is a cross-sectional view for explaining a bearing device for an electric motor according to the present invention.
【図２】図１の軸受部の拡大図である。FIG. 2 is an enlarged view of the bearing portion of FIG.
【図３】従来の電動機の軸受装置の説明図である。FIG. 3 is an explanatory diagram of a conventional bearing device for an electric motor.
１ 回転子軸 ２ ボールベアリング ２ａ 外輪 ２ｂ 内輪 ３ 電動機カバー ３ａ くぼみ ４ 予圧バネ ５ 突起 1 rotor shaft 2 ball bearing 2a outer ring 2b inner ring 3 motor cover 3a recess 4 preload spring 5 protrusion
Claims (1)
リングの外輪を支持するため電動機カバーに形成したく
ぼみと、このくぼみの側面とこれに対向する上記外輪の
側面間に介挿した予圧バネと、上記くぼみの側面からこ
れに対向する上記ボールベアリングの内輪の側面に向か
って延びる突起とより成り、上記予圧バネが応力限界以
上に圧縮される前に上記突起の端面と上記内輪の側面が
接するようになることを特徴とする電動機の軸受装置。1. A recess formed in a motor cover for supporting an outer ring of a ball bearing that supports a rotor shaft of an electric motor, and a preload spring interposed between a side surface of the recess and a side surface of the outer ring facing the side surface of the recess. A projection extending from the side surface of the recess toward the side surface of the inner ring of the ball bearing facing the recess, and the end surface of the projection contacts the side surface of the inner ring before the preload spring is compressed to a stress limit or more. A bearing device for an electric motor, characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4319255A JP2558581B2 (en) | 1992-11-05 | 1992-11-05 | Electric motor bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4319255A JP2558581B2 (en) | 1992-11-05 | 1992-11-05 | Electric motor bearing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06153446A true JPH06153446A (en) | 1994-05-31 |
| JP2558581B2 JP2558581B2 (en) | 1996-11-27 |
Family
ID=18108156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4319255A Expired - Fee Related JP2558581B2 (en) | 1992-11-05 | 1992-11-05 | Electric motor bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2558581B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012219680A (en) * | 2011-04-06 | 2012-11-12 | Denso Corp | Valve timing adjustment device |
| TWI611863B (en) * | 2012-02-01 | 2018-01-21 | 蓋威有限公司 | Spindle assembly |
| CN113710909A (en) * | 2020-04-21 | 2021-11-26 | 华为数字能源技术有限公司 | Power assembly and vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4985502U (en) * | 1973-09-25 | 1974-07-24 | ||
| JPS63105451U (en) * | 1986-12-22 | 1988-07-08 |
-
1992
- 1992-11-05 JP JP4319255A patent/JP2558581B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4985502U (en) * | 1973-09-25 | 1974-07-24 | ||
| JPS63105451U (en) * | 1986-12-22 | 1988-07-08 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012219680A (en) * | 2011-04-06 | 2012-11-12 | Denso Corp | Valve timing adjustment device |
| TWI611863B (en) * | 2012-02-01 | 2018-01-21 | 蓋威有限公司 | Spindle assembly |
| CN113710909A (en) * | 2020-04-21 | 2021-11-26 | 华为数字能源技术有限公司 | Power assembly and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2558581B2 (en) | 1996-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0535213Y2 (en) | ||
| US4545627A (en) | Creep preventing device of an annular member | |
| JPH06153446A (en) | Bearing device for motor | |
| JPH06200950A (en) | Bearing device of rotating machine | |
| JP6289712B1 (en) | Fan motor device and manufacturing method thereof | |
| JPH0339617Y2 (en) | ||
| JPH02179239A (en) | Ball bearing holder | |
| JPH083709Y2 (en) | Lubricant-sealed bearing unit for rolling mill | |
| JPH08251856A (en) | Bearing mechanism of motor | |
| JPH10299785A (en) | Creep preventing bearing device and machine device provided with creep preventing bearing | |
| JPS631352A (en) | Squirrel-cage rotor | |
| JPH07180727A (en) | Fixing device for bearing | |
| KR100578993B1 (en) | Rotor of vibration motor | |
| JPS5925942U (en) | Rotating machine shaft sealing device | |
| JPS62283217A (en) | Bearing for electric motor | |
| JPS6321170Y2 (en) | ||
| JPS636509Y2 (en) | ||
| JPS6216769Y2 (en) | ||
| JPH02202332A (en) | Ball bearing fixing device | |
| JPS6014616A (en) | Bearing device | |
| JPS62296757A (en) | Motor | |
| JPH04337116A (en) | Bearing retainer for electric motor | |
| JPS59155859U (en) | Rotating electric machine bearing device | |
| JPH0526232A (en) | Ceramics spherical sliding bearing | |
| JP2002005182A (en) | Sealing device for rolling bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |