JP2003032958A - Motor - Google Patents

Motor

Info

Publication number
JP2003032958A
JP2003032958A JP2001221113A JP2001221113A JP2003032958A JP 2003032958 A JP2003032958 A JP 2003032958A JP 2001221113 A JP2001221113 A JP 2001221113A JP 2001221113 A JP2001221113 A JP 2001221113A JP 2003032958 A JP2003032958 A JP 2003032958A
Authority
JP
Japan
Prior art keywords
bearing holder
bearing
electric motor
fixed
outer ring
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
Application number
JP2001221113A
Other languages
Japanese (ja)
Other versions
JP3879451B2 (en
Inventor
Shinji Yamaguchi
伸二 山口
Yasushi Echizen
安司 越前
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2001221113A priority Critical patent/JP3879451B2/en
Publication of JP2003032958A publication Critical patent/JP2003032958A/en
Application granted granted Critical
Publication of JP3879451B2 publication Critical patent/JP3879451B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • 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
    • F16C35/042—Housings for rolling element bearings for rotary movement
    • F16C35/045—Housings for rolling element bearings for rotary movement with a radial flange to mount the housing
    • 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
    • F16C35/07—Fixing them on the shaft or housing with interposition of an element
    • F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/60—Positive connections with threaded parts, e.g. bolt and nut connections
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Reciprocating Pumps (AREA)
  • Support Of The Bearing (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a motor which can avoid creeping of its ball bearings, while a preload is applied to them. SOLUTION: An inner ring of ball bearings 12 is pushed into a rotary shaft 23, and an outer ring of the ball bearings is fixed to a bearing holder 11 with set screws 14 via a pressing plate 13. The bearing holder 11 is fixed to a bracket 21 with screws 26 via spacers 24 and spring washers 25, to apply a preload to the ball bearings 12.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、機器の駆動源とな
る電動機、特に回転軸にラジアル方向の負荷がかかる玉
軸受のクリープ防止に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to prevention of creep of an electric motor, which is a drive source of equipment, in particular, a ball bearing in which a rotating shaft is radially loaded.

【０００２】[0002]

【従来の技術】従来、玉軸受を用いた電動機には、玉軸
受の寿命を確保するため軸方向に適正な与圧をかけてい
る。このため、外輪と軸受ハウジング（または内輪と回
転軸）との間にわずかな隙間を設けてルーズにしてい
た。2. Description of the Related Art Conventionally, in an electric motor using a ball bearing, an appropriate pressure is applied in the axial direction in order to secure the life of the ball bearing. For this reason, a slight gap is provided between the outer ring and the bearing housing (or the inner ring and the rotating shaft) to make them loose.

【０００３】そして、電動機の駆動時に出力軸にラジア
ル方向の負荷がかかると、外輪外径と軸受ハウジング内
径（または内輪内径と回転軸外径）の寸法差からすべり
現象が発生して摩耗が生じるためクリープ対策がとられ
ていた。When a load is applied to the output shaft in the radial direction when the electric motor is driven, a slip phenomenon occurs due to a dimensional difference between the outer diameter of the outer ring and the inner diameter of the bearing housing (or the inner diameter of the inner ring and the outer diameter of the rotating shaft), causing wear. Therefore, measures against creep were taken.

【０００４】一般的には、玉軸受の内輪と回転軸とを圧
入嵌合、一方の玉軸受の外輪とハウジングとにわずかな
隙間を設けて外輪をルーズにし、その外輪にバネで軸方
向に与圧をかけていた。Generally, an inner ring of a ball bearing and a rotary shaft are press-fitted to each other, a slight gap is provided between an outer ring of one ball bearing and a housing to loosen the outer ring, and the outer ring is axially moved by a spring. I was under pressure.

【０００５】[0005]

【発明が解決しようとする課題】しかしながら、従来の
ように内輪を回転軸に圧入または接着、片方の外輪をル
ーズにしたバネによる与圧構造では、玉軸受外輪を確実
に固定するのが困難であり、完全にクリープを防止する
ことができなかった。However, it is difficult to surely fix the ball bearing outer ring in the conventional pressurizing structure using a spring in which the inner ring is press-fitted or adhered to the rotating shaft and one outer ring is loose as in the prior art. Yes, it was not possible to completely prevent creep.

【０００６】そして、ダイアフラムポンプのように電動
機にラジアル方向のアンバランス荷重が加わる用途に使
用すると特にクリープが発生しやすかった。When used in an application such as a diaphragm pump in which an unbalanced load in the radial direction is applied to an electric motor, creep is particularly likely to occur.

【０００７】また、両出力軸タイプの電動機において、
両方の玉軸受外輪を軸受ハウジングに固定する構造にす
ると、玉軸受に与圧をかけることが困難であった。In addition, in the both output shaft type electric motor,
If both ball bearing outer rings are fixed to the bearing housing, it is difficult to apply pressure to the ball bearings.

【０００８】そこで、内輪と回転軸との間に隙間を設け
れば与圧をかけることは可能になるが、今度は玉軸受内
輪と回転軸の間でクリープが発生することになり、玉軸
受に与圧をかけるとクリープを避けることができなかっ
た。Therefore, it is possible to apply pressure by providing a gap between the inner ring and the rotating shaft, but this time, creep occurs between the inner ring of the ball bearing and the rotating shaft, and the ball bearing Creep could not be avoided by applying pressure to the.

【０００９】本発明は、上記従来の課題を解決するもの
であり、与圧をかけながら玉軸受のクリープを防止でき
る電動機を提供することを目的とする。The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide an electric motor capable of preventing creep of a ball bearing while applying pressure.

【００１０】[0010]

【課題を解決するための手段】上記の課題を解決するた
めに本発明の電動機は、回転軸を玉軸受で両持ち支承す
る電動機において、与圧をかけながら玉軸受の外輪と軸
受ホルダをネジ固定するもので、玉軸受の外輪を挿入係
止する軸受ホルダと、この軸受ホルダを取り付けるブラ
ケットと、前記軸受ホルダの外周ツバ部の肉厚より厚い
スペーサと、前記軸受ホルダとスペーサとの段差間に押
圧配設するバネワッシャとを備え、玉軸受の内輪を回転
軸に圧入、外輪はビスを介して軸受ホルダに固定、この
軸受ホルダをブラケットに対して前記スペーサとバネワ
ッシャとで軸方向に移動可能となるようにネジ固定した
もので、玉軸受のクリープを防止できる。In order to solve the above-mentioned problems, an electric motor of the present invention is an electric motor in which a rotary shaft is supported by ball bearings at both ends, and the outer ring of the ball bearing and the bearing holder are screwed while applying pressure. A bearing holder for fixing and inserting and locking the outer ring of the ball bearing, a bracket for mounting the bearing holder, a spacer thicker than the outer peripheral flange of the bearing holder, and a step between the bearing holder and the spacer. The inner ring of the ball bearing is press-fitted into the rotating shaft, the outer ring is fixed to the bearing holder via screws, and this bearing holder can be moved in the axial direction with the spacer and spring washer with respect to the bracket. It is fixed with screws so that the creep of the ball bearing can be prevented.

【００１１】[0011]

【発明の実施の形態】上記の課題を解決するために請求
項１記載の電動機は、回転軸を玉軸受で両持ち支承する
電動機において、与圧をかけながら玉軸受の外輪と軸受
ホルダをネジ固定したもので、クリープを防止できる。In order to solve the above problems, an electric motor according to a first aspect of the present invention is an electric motor in which a rotating shaft is supported by ball bearings at both ends, and the outer ring of the ball bearing and the bearing holder are screwed while applying pressure. It is fixed and can prevent creep.

【００１２】また、請求項２記載の電動機は、玉軸受の
外輪を挿入係止する軸受ホルダと、この軸受ホルダを取
り付けるブラケットと、前記軸受ホルダの外周ツバ部の
肉厚より厚いスペーサと、前記軸受ホルダとスペーサと
の段差間に押圧配設するバネワッシャとを備え、玉軸受
の内輪を回転軸に圧入、外輪はビスを介して軸受ホルダ
に固定、この軸受ホルダをブラケットに対して前記スペ
ーサとバネワッシャとを介してビスで固定して与圧をか
けるもので、与圧をかけながら玉軸受の外輪を固定でき
る。According to another aspect of the electric motor of the present invention, a bearing holder into which an outer ring of a ball bearing is inserted and locked, a bracket for mounting the bearing holder, a spacer thicker than a wall thickness of an outer peripheral brim of the bearing holder, The bearing holder and the spacer are provided with a spring washer that is pressed between the steps, and the inner ring of the ball bearing is press-fitted into the rotating shaft, and the outer ring is fixed to the bearing holder via a screw. The outer ring of the ball bearing can be fixed while applying pressure by fixing it with screws via spring washers.

【００１３】また、請求項３記載の電動機は、内輪の圧
入位置決めに回転軸の段部を利用したもので、玉軸受を
軸方向に精度よく位置決めできる。Further, in the electric motor according to the third aspect of the invention, the step portion of the rotary shaft is used for press-fit positioning of the inner ring, so that the ball bearing can be accurately positioned in the axial direction.

【００１４】また、請求項４記載の電動機は、軸受ホル
ダを両側に設け、片方の軸受ホルダはスペーサとバネワ
ッシャを用いずにブラケットにビスで固定したもので、
軸受構造を共用でき、両方の玉軸受外輪をビスで固定で
きる。According to a fourth aspect of the present invention, bearing holders are provided on both sides, and one bearing holder is fixed to the bracket with screws without using spacers and spring washers.
The bearing structure can be shared, and both ball bearing outer rings can be fixed with screws.

【００１５】また、請求項５記載の電動機は、両出力軸
タイプであっても、与圧をかけながら両方の玉軸受の外
輪をビスで固定することでクリープを防止できる。Further, even if the electric motor of the fifth aspect is a double output shaft type, creep can be prevented by fixing the outer rings of both ball bearings with screws while applying pressure.

【００１６】さらに、請求項６記載の電動機は、上記の
電動機を用いたダイアフラムポンプであり、常時ダイア
フラムを往復運動させることで玉軸受にラジアル方向の
アンバランス負荷がかかる用途に用いてもクリープを防
止できる。Further, an electric motor according to a sixth aspect of the present invention is a diaphragm pump using the above-mentioned electric motor, and even when it is used in an application where a radial unbalance load is applied to a ball bearing by constantly reciprocating the diaphragm, creeping occurs. It can be prevented.

【００１７】[0017]

【実施例】以下、本発明の実施例について図面を参照し
て説明する。Embodiments of the present invention will be described below with reference to the drawings.

【００１８】（実施例１）図１は玉軸受外輪の固定構造
を示すものである。(Embodiment 1) FIG. 1 shows a fixing structure of an outer ring of a ball bearing.

【００１９】図１（ａ）（ｂ）において、１１は軸受ホ
ルダ、１２は玉軸受、１３は押え板、１４は止めネジ、
１５はツバ部で、軸受ホルダ１１の外周に３ヶ所設けて
いる。1A and 1B, 11 is a bearing holder, 12 is a ball bearing, 13 is a holding plate, 14 is a set screw,
Denoted at 15 is a brim portion, which is provided at three locations on the outer circumference of the bearing holder 11.

【００２０】そして、軸受ホルダ１１の内周にルーズな
状態で玉軸受１２の外輪が挿入され、その外輪端面は押
え板１３と接触するように軸受ホルダ１１端面より少し
突出するように反対側の外輪端面を受けており、押え板
１３を軸受ホルダ１１に止めネジ１４で固定して軸受ホ
ルダ完成品となる。The outer ring of the ball bearing 12 is inserted in the inner periphery of the bearing holder 11 in a loose state, and the outer ring end surface of the ball bearing 12 is slightly protruded from the end surface of the bearing holder 11 so as to come into contact with the holding plate 13. Having received the outer ring end surface, the pressing plate 13 is fixed to the bearing holder 11 with the setscrew 14 to complete the bearing holder.

【００２１】次に、上述した軸受ホルダ完成品を用いた
電動機の与圧構造を中心に説明する。Next, the pressurizing structure of the electric motor using the above-mentioned finished bearing holder will be mainly described.

【００２２】図２において、２１はブラケット、２２は
巻線を備えたステータ、２３は回転軸でロータを備えて
いる。２４はスペーサ、２５は波形のバネワッシャ、２
６はネジである。また、図３は与圧構造の要部を説明す
る拡大図であり、３１はクリアランス、３２は隙間、３
３は段差である。In FIG. 2, reference numeral 21 is a bracket, 22 is a stator having windings, and 23 is a rotating shaft having a rotor. 24 is a spacer, 25 is a corrugated spring washer, 2
6 is a screw. Further, FIG. 3 is an enlarged view for explaining a main part of the pressurizing structure, in which 31 is a clearance, 32 is a gap, and 3 is a clearance.
3 is a step.

【００２３】まず、ステータ２２外周に両側からブラケ
ット２１を取り付けておく。そして図１で説明した軸受
ホルダ完成品の玉軸受１２内輪を回転軸２３の段部まで
圧入、軸受ホルダ完成品のツバ部１５を一方のブラケッ
ト２１にネジ２６で３ヶ所固定する。さらに、もう一方
の軸受ホルダ完成品の玉軸受１２内輪を回転軸２３の反
対側の段部まで圧入する。First, the brackets 21 are attached to the outer circumference of the stator 22 from both sides. Then, the inner ring of the ball bearing 12 of the completed bearing holder described with reference to FIG. 1 is press-fitted to the step portion of the rotary shaft 23, and the flange portion 15 of the completed bearing holder is fixed to one bracket 21 at three positions with screws 26. Further, the inner ring of the ball bearing 12 of the other finished product of the bearing holder is press-fitted to the step portion on the opposite side of the rotary shaft 23.

【００２４】そして、取り付けた軸受ホルダ完成品を介
して与圧をかけるために、軸受ホルダのツバ部１５の肉
厚よりも厚いスペーサ２４とバネワッシャ２５を用い
る。Then, in order to apply pressure through the mounted bearing holder finished product, a spacer 24 and a spring washer 25 thicker than the wall thickness of the flange portion 15 of the bearing holder are used.

【００２５】ところで、軸受ホルダ１１とブラケット２
１との挿入部にはラジアル方向にわずかなクリアランス
３１を設けておく。また、内輪圧入後に軸受ホルダとブ
ラケット２１には軸線方向に確実に隙間３２が得られる
ようにそれぞれ寸法設定している。By the way, the bearing holder 11 and the bracket 2
A slight clearance 31 is provided in the radial direction at the insertion part with 1. The bearing holder and the bracket 21 are dimensioned so that a gap 32 can be reliably obtained in the axial direction after the inner ring is press-fitted.

【００２６】そして、ツバ部１５とスペーサ２４間の段
差３３にバネワッシャ２５を配設、ネジ２６でツバ部１
５をブラケット２１に固定する。Then, a spring washer 25 is provided at a step 33 between the brim portion 15 and the spacer 24, and the brim portion 1 is secured by a screw 26.
5 is fixed to the bracket 21.

【００２７】このバネワッシャ２５は押圧しないフリー
の状態で段差３３よりも高く設定、ネジ２６はスペーサ
２４の高さで制限された分だけしか締め付けられないの
で玉軸受に過度の与圧をかけることはない。また、この
押圧状態で適正与圧になるようにバネ圧を設定してい
る。The spring washer 25 is set higher than the step 33 in a free state where it is not pressed, and the screw 26 can be tightened only by the amount limited by the height of the spacer 24. Therefore, excessive pressure is not applied to the ball bearing. Absent. Further, the spring pressure is set so that the proper pressure is applied in this pressed state.

【００２８】これにより、両玉軸受の内輪は回転軸に圧
入固定、両玉軸受の外輪はネジ固定されるのでクリープ
が発生することはない。また、バネワッシャで適正な与
圧をかけることができるので玉軸受の寿命を確保でき
る。As a result, the inner races of both ball bearings are press-fitted and fixed to the rotating shaft, and the outer races of both ball bearings are fixed by screw, so that creep does not occur. Further, since the spring washer can apply an appropriate pressure, the life of the ball bearing can be secured.

【００２９】なお、軸受ホルダ完成品はバネワッシャ側
の片方だけでもよく、その場合、反対側は軸受ホルダを
一体化したブラケットにして、その玉軸受外輪を固着す
ればよい。It should be noted that the finished product of the bearing holder may be only one on the spring washer side. In that case, the other side may be a bracket in which the bearing holder is integrated and the outer ring of the ball bearing may be fixed.

【００３０】（実施例２）実施例２は実施例１の電動機
をダイアフラムポンプ駆動に応用した実施例である。(Embodiment 2) Embodiment 2 is an embodiment in which the electric motor of Embodiment 1 is applied to drive a diaphragm pump.

【００３１】図４（ａ）（ｂ）において、４１はクラン
ク支持体、４２はクランク軸、４３は軸受、４４はゴム
製のダイアフラム、４５は吸気口、４６は排気口で、そ
の先には逆流を防止する弁（図示せず）がある。4 (a) and 4 (b), 41 is a crank support, 42 is a crank shaft, 43 is a bearing, 44 is a rubber diaphragm, 45 is an intake port, 46 is an exhaust port, and beyond that. There is a valve (not shown) to prevent backflow.

【００３２】電動機の回転軸に固定されたクランク支持
体４１は、クランク軸４２に固定された軸受４３の中心
に対して偏芯した状態で取り付けており、電動機の回転
軸が回転するとクランク軸４２は往復運動する。これに
よりクランク軸４２に取り付けたダイアフラム４４が往
復運動して気体を吸気口４５から吸入して排気口４６か
ら排出する。The crank support 41 fixed to the rotating shaft of the electric motor is attached in an eccentric state with respect to the center of the bearing 43 fixed to the crank shaft 42. When the rotating shaft of the electric motor rotates, the crank shaft 42 is rotated. Reciprocates. As a result, the diaphragm 44 attached to the crankshaft 42 reciprocates to suck gas from the intake port 45 and discharge it from the exhaust port 46.

【００３３】このように、電動機は両玉軸受の内外輪を
固定した状態で適正与圧をかけているので、回転軸に常
時ラジアル方向のアンバランス荷重が加わるダイアフラ
ムポンプに使用してもクリープを防止できる。As described above, since the electric motor is properly pressurized with the inner and outer races of both ball bearings fixed, even if it is used in a diaphragm pump in which an unbalanced load in the radial direction is constantly applied to the rotary shaft, creep is prevented. It can be prevented.

【００３４】[0034]

【発明の効果】上記の実施例から明らかなように、請求
項１、２記載の発明によれば、与圧をかけながら玉軸受
の内輪および外輪を固定しているのでクリープを防止で
きる。As is apparent from the above embodiments, according to the inventions of claims 1 and 2, creep can be prevented because the inner ring and the outer ring of the ball bearing are fixed while applying pressure.

【００３５】また、請求項３記載の発明によれば、上記
請求項に加えて、玉軸受の位置決め精度確保が容易にで
きるため、適正与圧を確保しやすくなる。According to the invention of claim 3, in addition to the above claims, it is possible to easily secure the positioning accuracy of the ball bearings, so that it becomes easy to secure the proper pressurization.

【００３６】また、請求項４、５記載の発明によれば、
両出力軸タイプの軸受構造を共用でき、両玉軸受の外輪
をビスで確実に固定できるのでクリープを防止できる。According to the inventions of claims 4 and 5,
Both output shaft type bearing structures can be shared, and the outer rings of both ball bearings can be securely fixed with screws to prevent creep.

【００３７】さらに、請求項６記載の発明によれば、ラ
ジアル方向のアンバランス負荷が電動機の玉軸受にかか
るダイアフラムポンプに用いてもクリープを防止でき
る。Further, according to the invention described in claim 6, creep can be prevented even when used in a diaphragm pump in which an unbalanced load in the radial direction is applied to a ball bearing of an electric motor.

【００３８】このように、両玉軸受の内輪および外輪を
固定した状態で与圧をかけることができるので、クリー
プを防止した長寿命の電動機が得られる。As described above, since the pressurization can be applied with the inner and outer rings of both ball bearings fixed, a long-life electric motor in which creep is prevented can be obtained.

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

【図１】（ａ）本発明の玉軸受外輪の固定構造を説明す
る断面図 （ｂ）本発明の玉軸受外輪の固定構造を説明する平面図FIG. 1A is a cross-sectional view illustrating a fixing structure of a ball bearing outer ring of the present invention, and FIG. 1B is a plan view illustrating a fixing structure of a ball bearing outer ring of the present invention.

【図２】本発明の実施例１における電動機の断面図FIG. 2 is a sectional view of the electric motor according to the first embodiment of the present invention.

【図３】本発明の実施例１における要部の拡大図FIG. 3 is an enlarged view of a main part of the first embodiment of the present invention.

【図４】（ａ）本発明の実施例２におけるダイアフラム
ポンプの説明図 （ｂ）本発明の実施例２におけるダイアフラムポンプと
電動機の断面図FIG. 4A is an explanatory diagram of a diaphragm pump according to a second embodiment of the present invention. FIG. 4B is a sectional view of a diaphragm pump and an electric motor according to a second embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１１ 軸受ホルダ １２ 玉軸受 １３ 押え板 １４ 止めネジ １５ ツバ部 ２１ ブラケット ２２ ステータ ２３ 回転軸 ２４ スペーサ ２５ バネワッシャ ２６ ネジ ３２ 隙間 ３３ 段差 ４４ ダイアフラム 11 Bearing holder 12 ball bearings 13 Presser plate 14 Set screw 15 Head part 21 bracket 22 Stator 23 rotation axis 24 spacer 25 spring washers 26 screws 32 gap 33 steps 44 diaphragm

───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3H077 AA01 AA11 CC02 CC17 DD02 DD12 EE21 EE23 EE34 FF38 FF39 3J012 AB02 AB04 BB01 CB01 CB03 FB10 GB10 HB02 3J017 AA10 CA01 DA01 DA02 DB01 DB07 DB10 5H605 AA05 CC04 DD09 EA11 EB39 FF01 GG06    ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3H077 AA01 AA11 CC02 CC17 DD02                       DD12 EE21 EE23 EE34 FF38                       FF39                 3J012 AB02 AB04 BB01 CB01 CB03                       FB10 GB10 HB02                 3J017 AA10 CA01 DA01 DA02 DB01                       DB07 DB10                 5H605 AA05 CC04 DD09 EA11 EB39                       FF01 GG06

Claims (6)

【特許請求の範囲】[Claims] 【請求項１】 回転軸を玉軸受で両持ち支承する構造の
電動機において、与圧をかけながら玉軸受の外輪と軸受
ホルダをネジ固定してクリープを防止したことを特徴と
する電動機。1. An electric motor having a structure in which a rotating shaft is supported by ball bearings at both ends, wherein the outer ring of the ball bearing and a bearing holder are fixed with screws while applying pressure to prevent creep. 【請求項２】 玉軸受の外輪を挿入係止する軸受ホルダ
と、この軸受ホルダを取り付けるブラケットと、前記軸
受ホルダの外周ツバ部の肉厚より厚いスペーサと、前記
軸受ホルダとスペーサとの段差間に押圧配設するバネワ
ッシャとを備え、玉軸受の内輪を回転軸に圧入、外輪は
ビスを介して軸受ホルダに固定、この軸受ホルダをブラ
ケットに対して前記スペーサとバネワッシャとを介して
ビスで固定して与圧をかける請求項１記載の電動機。2. A bearing holder into which an outer ring of a ball bearing is inserted and locked, a bracket to which the bearing holder is attached, a spacer thicker than the outer peripheral flange of the bearing holder, and a step between the bearing holder and the spacer. The inner ring of the ball bearing is press-fitted into the rotating shaft, the outer ring is fixed to the bearing holder via a screw, and this bearing holder is fixed to the bracket with a screw via the spacer and the spring washer. The electric motor according to claim 1, wherein the motor is pressurized. 【請求項３】 内輪の圧入位置決めに回転軸の段部を利
用する請求項２記載の電動機。3. The electric motor according to claim 2, wherein a step portion of the rotary shaft is used for press-fit positioning of the inner ring. 【請求項４】 軸受ホルダを両側に設け、片方の軸受ホ
ルダはスペーサとバネワッシャを用いずにブラケットに
ビスで固定する請求項２記載の電動機。4. The electric motor according to claim 2, wherein bearing holders are provided on both sides, and one bearing holder is fixed to the bracket with a screw without using a spacer and a spring washer. 【請求項５】 両出力軸タイプである請求項１から請求
項４のいずれか１項記載の電動機。5. The electric motor according to claim 1, which is a dual output shaft type. 【請求項６】 請求項１から請求項５のいずれか１項記
載の電動機を用いたダイアフラムポンプ。6. A diaphragm pump using the electric motor according to any one of claims 1 to 5.
JP2001221113A 2001-07-23 2001-07-23 Electric motor Expired - Lifetime JP3879451B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001221113A JP3879451B2 (en) 2001-07-23 2001-07-23 Electric motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001221113A JP3879451B2 (en) 2001-07-23 2001-07-23 Electric motor

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Publication Number Publication Date
JP2003032958A true JP2003032958A (en) 2003-01-31
JP3879451B2 JP3879451B2 (en) 2007-02-14

Family

ID=19054831

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Application Number Title Priority Date Filing Date
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Country Link
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004054457B3 (en) * 2004-11-11 2006-02-09 Ab Skf Multi-purpose machine and automotive roller bearing is retained concealed within a surrounding housing by a spring locking ring
WO2008041430A1 (en) * 2006-09-29 2008-04-10 Honda Motor Co., Ltd. Transmission
EP3070350A1 (en) * 2015-03-18 2016-09-21 Roller Bearing Company of America, Inc. Bearing assembly having an anti-rotation device
JP2020162245A (en) * 2019-03-26 2020-10-01 日本電産サンキョー株式会社 motor
CN111919043A (en) * 2018-02-07 2020-11-10 铁姆肯公司 Roller mounting device for tapered roller bearing
US20220389958A1 (en) * 2021-06-08 2022-12-08 Aktiebolaget Skf Non-locating bearing assembly

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004054457B3 (en) * 2004-11-11 2006-02-09 Ab Skf Multi-purpose machine and automotive roller bearing is retained concealed within a surrounding housing by a spring locking ring
WO2008041430A1 (en) * 2006-09-29 2008-04-10 Honda Motor Co., Ltd. Transmission
DE112007002312B4 (en) * 2006-09-29 2012-04-05 Honda Motor Co., Ltd. Dual clutch transmission for a motorcycle
US8234945B2 (en) 2006-09-29 2012-08-07 Honda Motor Co., Ltd. Transmission
EP3070350A1 (en) * 2015-03-18 2016-09-21 Roller Bearing Company of America, Inc. Bearing assembly having an anti-rotation device
CN111919043A (en) * 2018-02-07 2020-11-10 铁姆肯公司 Roller mounting device for tapered roller bearing
CN111919043B (en) * 2018-02-07 2022-09-20 铁姆肯公司 Assembly tool and method for positioning rolling elements of a bearing assembly during a preload operation
JP2020162245A (en) * 2019-03-26 2020-10-01 日本電産サンキョー株式会社 motor
US20220389958A1 (en) * 2021-06-08 2022-12-08 Aktiebolaget Skf Non-locating bearing assembly
US12012992B2 (en) * 2021-06-08 2024-06-18 Aktiebolaget Skf Non-locating bearing assembly

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