DE1575609A1 - Motor with ball bearings - Google Patents

Motor with ball bearings

Info

Publication number
DE1575609A1
DE1575609A1 DE1966S0103861 DES0103861A DE1575609A1 DE 1575609 A1 DE1575609 A1 DE 1575609A1 DE 1966S0103861 DE1966S0103861 DE 1966S0103861 DE S0103861 A DES0103861 A DE S0103861A DE 1575609 A1 DE1575609 A1 DE 1575609A1
Authority
DE
Germany
Prior art keywords
bearing
bearing cap
motor
ball
ball bearings
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
DE1966S0103861
Other languages
German (de)
Other versions
DE1575609C3 (en
DE1575609B2 (en
Inventor
Helmut Schmidt
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE1575609A priority Critical patent/DE1575609C3/en
Publication of DE1575609A1 publication Critical patent/DE1575609A1/en
Publication of DE1575609B2 publication Critical patent/DE1575609B2/en
Application granted granted Critical
Publication of DE1575609C3 publication Critical patent/DE1575609C3/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • 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
    • F16C35/067—Fixing them in a 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
    • 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
    • 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

Description

Motor mit Kugellagerung Die Erfindung bezieht sich auf einen Motor mir Kugellagerung, bei dem die Kugellager in eine zylindrische Bohrung der Lagerschilde eingesetzt und durch eine Lagerkappe gehalten sind. Die zylindrische Bohrung im Lagerschild darf nur so tief sein, daß sich beim Anziehen der Lagerkappe ein fester Sitz des Kugellagers . ergibt; d.h. die Stirnfläche des Kugellagers muß etwas aus der Anlagefläche des Lagerschildes für die Lagerkappe hervorstehen. Beim Anziehen der Befestigungsschrauben der Lagerkappe tritt so-mit ein erhebliches.Biegemoment auf, welches die zylindrische Bohrung im Lagerschild oval verformt. Diese Verformung wird auch auf den Außenring des Kugellagers übertragen, so daß je nach dem Verformungsgrad mehr oder weniger starke Kugellagergeräusche auftreten. Es hat sich gezeigt, daß trotz Einhaltung engster Fertigungstoleranzen es. nicht möglich ist, wirxsame.Abhilfe gegen Kugellagergeräusche bzw. -susfall zu schaffen. Mot or with K l UGE storage The invention relates to a motor me ball bearing, wherein the ball bearings are inserted into a cylindrical bore of the bearing plates and held by a bearing cap. The cylindrical bore in the end shield may only be deep enough to ensure that the ball bearing is firmly seated when the bearing cap is tightened. results; ie the end face of the ball bearing must protrude somewhat from the contact surface of the bearing plate for the bearing cap. When the fastening screws of the bearing cap are tightened , a considerable bending moment occurs, which deforms the cylindrical bore in the end shield into an oval shape. This deformation is also transmitted to the outer ring of the ball bearing, so that depending on the degree of deformation, more or less strong ball bearing noises occur. It has been shown that despite the strictest manufacturing tolerances it. it is not possible to create an effective remedy against ball bearing noise or failure.

Der Erfindung liegt die Aufgabe zugrunde, diesen Mangel der Mo- toren mit Kugellagerung auf einfache Weise zu beheben. Das wird gemäß der Erfindung dadurch erreicht, daß die Lagerkappe elastisch ausgebildet ist. Vorzugsweise sind in der Lagerkappe im wesent- lichen konzentrisch angeordnete Schlitze vorgesehen. Hierbei kann jeder Befestigungsschraube ein Schlitz zugeordnet sein. Es ist vorteilhaft, daß die Schlitze auf verschiedenen konzentrischen Kreisen angeordnet sind und sich zumindest teilweise überlappen. Durch die elastische Ausführung der Lagerkappe tritt eine wesent- liche Herabsetzung der Kugellagergeräusche ein, da die Biege-spannung im Lagerschild um ein mehrfaches herabgesetzt werden kann. Ferner können die Fertigungstoleranzen gröber sein und es können auch normale Kugellager verwendet werden: Außerdem kann eine. stirnseitige Bearbeitung der Lagerkappe sowie der Anlageflächen am Lagerschild entfallen. The invention is based on the object of remedying this deficiency in motors with ball bearings in a simple manner. This is achieved according to the invention in that the bearing cap is designed to be elastic . Preferably concentrically arranged slots are provided in the bearing cap. A slot can be assigned to each fastening screw. It is advantageous that the slots are arranged on different concentric circles and at least partially overlap. The elastic design of the bearing cap results in a significant reduction in the ball bearing noise, since the bending stress in the bearing shield can be reduced many times over. Furthermore, the manufacturing tolerances can be coarser and normal ball bearings can also be used: In addition, a. There is no need for end-face machining of the bearing cap and the contact surfaces on the bearing shield.

Anhand der Zeichnung, in der ein Ausführungsbeispiel dargestellt ist, wird die Erfindung in Prinzip erläutert. The invention is explained in principle with the aid of the drawing, in which an exemplary embodiment is shown.

Figur 1 zeigt eine Ansicht auf die erfindungsgemäße Lagerkappe und Figur 2 einen Schnitt nach der Linie II-II der Fig. 1. FIG. 1 shows a view of the bearing cap according to the invention and FIG. 2 shows a section along the line II-II in FIG. 1.

Mit 1 ist ein Lagerbügel einen Motors bezeichnet, der eine zylin- drische Bohrung 2 für ein Kugellager 3 aufweist, welches zur Lagerung einer Welle 4 dient. Die Tiefe, der Bohrung 2 kann ohne' besondere Toleranzvorschrift gefertigt werden, da zum Befestigen des Außenringes des Kugellagers 3 eine elastisch ausgebildete Lagerkappe@5 dient. Damit sich die Lagerkappe 5 elastisch ver- formen kann, sind im wesentlichen konzentrisch verlaufende Schlit- ze 6 vorgesehen, die im Bereich der Befestigungsschraube 7 der Lagerkappe angeordnet sind. 1 designates a bearing bracket of a motor which has a cylindrical bore 2 for a ball bearing 3 which is used to support a shaft 4. The depth of the bore 2 can be manufactured without any special tolerance specification, since an elastic bearing cap @ 5 is used to fasten the outer ring of the ball bearing 3. So that the bearing cap 5 can be elastically deformed, slots 6 running essentially concentrically are provided, which are arranged in the area of the fastening screw 7 of the bearing cap.

Wie das Nomentendiagramn rechts von Figur 2 zeigt, hat das Biege- moment m bei geschlitzter Lagerkappe einen wesentlich geringeren Wert als das Biegemoment M bei ungeschlitzter Lagerkappe, wie durch gestrichelt gezeichnete Linien zu ersehen ist. Durch die erfindungegemäße Maßnahme können daher die Kugellagergeräusche und damit der Ausfall praktisch beseitigt werden. Ferner erge- ben sich fertigungstechnische Vorteile, da keine engen Fertigungs- toleranzen eingehalten zu werden brauchen. As the moment diagram on the right of FIG. 2 shows, the bending moment m with a slotted bearing cap has a significantly lower value than the bending moment M with an unslotted bearing cap , as can be seen from the dashed lines. By means of the measure according to the invention, the ball bearing noise and thus the failure can be practically eliminated. There are also advantages in terms of manufacturing technology, since tight manufacturing tolerances do not need to be observed.

In Figur 1 sind nur zwei Befestigungsschrauben dargestellt. Bei drei und mehr Schrauben können entsprechend mehr Schlitze verwendet sein. Der.erfindungsgemäße Vorteil tritt auch auf, wenn anstelle eines Lagerbügels ein Lagerschild verwendet wird. In Figure 1, only two fastening screws are shown. With three or more screws, more slots can be used accordingly . The advantage according to the invention also occurs when a bearing plate is used instead of a bearing bracket.

Claims (1)

P a t e n t a n $ p r ü c h e 1. Motor sit Kugellagerung, bei den die Kugellager in eine 1 1 zylindrische Bohrunj# der Lagerschilde eingesetzt und durch eine Lagerkappe gehalten sind, dadurch gekennzeichnet, daB die Lagerkappe elastisch ausgebildet ist. 2. Motor nach Anspruch 1, dadurch gekennzeichnet, daß in der Lagerkappe in wesentlichen konzentrisch ang¢ordnete Schlitze vor- geseh¢n Bind. j. Motor nach Anspruch 2, dadurch gekennzeichnet, daß jeder Be-1 ' feetigungesahraube ein Schlitz zugeordnet ist. 4. Motor nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß dielohlitse auf verschiedenen kon$entriächen Kreisen ange- ordnet a@nd und sich teilweise überlappen. 5. »tor nach einen der Ansprüche 1 bis 4, dadurch gekennzeichnet, . *aß die Ausnehnungen außerhalb der Kugellagerbohrung angeordnet sind. P atentan $ pr ü che 1. Motor sit ball bearing, wherein the ball bearings in a 1 1 # cylindrical Bohrunj used the bearing plates and are held by a bearing cap, characterized in DAB, the bearing cap is elastic. 2. Motor according to claim 1, characterized in that in the bearing cap essentially concentrically ang ¢ arranged slots provided ¢ n bind. j. Motor according to Claim 2, characterized in that a slot is assigned to each mounting bracket. 4. Motor according to any one of claims 1 to 3, characterized in that dielohlitse overlap on different kon $ entriächen circles reasonable assigns a @ nd and partially. 5. »gate according to one of claims 1 to 4, characterized in that. * ate the recesses are arranged outside of the ball bearing bore.
DE1575609A 1966-05-18 1966-05-18 From the fixed bearing, the ball bearing serves to support the shaft of an electric motor Expired DE1575609C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1575609A DE1575609C3 (en) 1966-05-18 1966-05-18 From the fixed bearing, the ball bearing serves to support the shaft of an electric motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1575609A DE1575609C3 (en) 1966-05-18 1966-05-18 From the fixed bearing, the ball bearing serves to support the shaft of an electric motor

Publications (3)

Publication Number Publication Date
DE1575609A1 true DE1575609A1 (en) 1970-01-29
DE1575609B2 DE1575609B2 (en) 1978-01-05
DE1575609C3 DE1575609C3 (en) 1980-09-04

Family

ID=7525486

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1575609A Expired DE1575609C3 (en) 1966-05-18 1966-05-18 From the fixed bearing, the ball bearing serves to support the shaft of an electric motor

Country Status (1)

Country Link
DE (1) DE1575609C3 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2359317A1 (en) * 1976-07-19 1978-02-17 Motorola Inc ALTERNATOR BEARING MOUNTING PLATE
FR2617934A1 (en) * 1987-04-08 1989-01-13 Valeo Damping flywheel for a torque-transmission device, incorporating a rolling-contact bearing with two rows of rolling elements
EP1071188A2 (en) * 1999-07-20 2001-01-24 Mannesmann VDO Aktiengesellschaft Electric motor
EP1417744B1 (en) * 2002-02-18 2005-10-12 ebm-papst St. Georgen GmbH & Co. KG Electronically commutated internal rotor motor
DE102004049186A1 (en) * 2004-10-08 2006-04-13 Volkswagen Ag Bearing system for intermediate shafts comprises ball bearing mounted in bearing block and locked into it by bolt with rectangular head passing though it which is fastened in place by nut
EP2199634A2 (en) * 2008-12-18 2010-06-23 Robert Bosch GmbH Machine with bearing device
WO2010069715A2 (en) * 2008-12-18 2010-06-24 Robert Bosch Gmbh Machine with a bearing device
CN106460938A (en) * 2014-05-27 2017-02-22 日本精工株式会社 Bearing device and beading device fixing plate
FR3056843A1 (en) * 2016-09-28 2018-03-30 Valeo Equipements Electriques Moteur ROTATING ELECTRICAL MACHINE WITH IMPROVED SHAFT MOUNTING CONFIGURATION
US9939023B2 (en) * 2013-10-30 2018-04-10 Aktiebolaget Skf Bearing assembly having a roller bearing connected to a bearing support by affixing plates and a spring element disposed between an affixing plate and bearing support
EP3916966A4 (en) * 2019-01-28 2022-03-16 Meidensha Corporation Bearing pressure plate and rotating electric machine using same

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2939560C2 (en) * 1979-09-29 1983-08-25 Siemens AG, 1000 Berlin und 8000 München Fixed bearing with a roller bearing, especially for mounting the rotor shaft of a smaller electric motor
DE10137296B4 (en) * 2001-08-01 2007-01-04 Ab Skf Retaining element for fixing a machine part
DE10153441B4 (en) * 2001-10-30 2004-01-29 Ab Skf Holding element for fixing a machine part
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
DE102008053568B3 (en) * 2008-10-15 2010-04-08 Bühler Motor GmbH Bearing holder in a bearing plate
DE102008053569B3 (en) * 2008-10-15 2010-06-17 Bühler Motor GmbH Bearing support for control drive, has shaft supported in bearing plate for bearings with cylindrical outer contour, where bearing is held at face with help of mounting unit in bearing support of bearing plate
DE102019115292A1 (en) * 2019-06-06 2020-12-10 Schaeffler Technologies AG & Co. KG Bearing plate with recessed end face and adjacent flange

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2359317A1 (en) * 1976-07-19 1978-02-17 Motorola Inc ALTERNATOR BEARING MOUNTING PLATE
FR2617934A1 (en) * 1987-04-08 1989-01-13 Valeo Damping flywheel for a torque-transmission device, incorporating a rolling-contact bearing with two rows of rolling elements
EP1071188A2 (en) * 1999-07-20 2001-01-24 Mannesmann VDO Aktiengesellschaft Electric motor
EP1071188A3 (en) * 1999-07-20 2003-06-04 Siemens Aktiengesellschaft Electric motor
EP1417744B1 (en) * 2002-02-18 2005-10-12 ebm-papst St. Georgen GmbH & Co. KG Electronically commutated internal rotor motor
DE102004049186A1 (en) * 2004-10-08 2006-04-13 Volkswagen Ag Bearing system for intermediate shafts comprises ball bearing mounted in bearing block and locked into it by bolt with rectangular head passing though it which is fastened in place by nut
DE102008054850A1 (en) 2008-12-18 2010-07-01 Robert Bosch Gmbh Machine with storage device
WO2010069715A2 (en) * 2008-12-18 2010-06-24 Robert Bosch Gmbh Machine with a bearing device
EP2199634A2 (en) * 2008-12-18 2010-06-23 Robert Bosch GmbH Machine with bearing device
WO2010069715A3 (en) * 2008-12-18 2011-03-03 Robert Bosch Gmbh Machine with a bearing device
EP2199634A3 (en) * 2008-12-18 2012-08-01 Robert Bosch GmbH Machine with bearing device
US9939023B2 (en) * 2013-10-30 2018-04-10 Aktiebolaget Skf Bearing assembly having a roller bearing connected to a bearing support by affixing plates and a spring element disposed between an affixing plate and bearing support
CN106460938A (en) * 2014-05-27 2017-02-22 日本精工株式会社 Bearing device and beading device fixing plate
EP3150874A4 (en) * 2014-05-27 2017-04-05 NSK Ltd. Bearing device and beading device fixing plate
EP3150874A1 (en) * 2014-05-27 2017-04-05 NSK Ltd. Bearing device and beading device fixing plate
US10001174B2 (en) 2014-05-27 2018-06-19 Nsk Ltd. Bearing device and beading device fixing plate
CN106460938B (en) * 2014-05-27 2019-06-18 日本精工株式会社 Bearing arrangement and bearing arrangement fixed plate
FR3056843A1 (en) * 2016-09-28 2018-03-30 Valeo Equipements Electriques Moteur ROTATING ELECTRICAL MACHINE WITH IMPROVED SHAFT MOUNTING CONFIGURATION
EP3916966A4 (en) * 2019-01-28 2022-03-16 Meidensha Corporation Bearing pressure plate and rotating electric machine using same

Also Published As

Publication number Publication date
DE1575609C3 (en) 1980-09-04
DE1575609B2 (en) 1978-01-05

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Legal Events

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C3 Grant after two publication steps (3rd publication)
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee