DE1575609B2 - BALL BEARING USED AS A FIXED BEARING FOR THE SHAFT OF AN ELECTRIC MOTOR - Google Patents

BALL BEARING USED AS A FIXED BEARING FOR THE SHAFT OF AN ELECTRIC MOTOR

Info

Publication number
DE1575609B2
DE1575609B2 DE1966S0103861 DES0103861A DE1575609B2 DE 1575609 B2 DE1575609 B2 DE 1575609B2 DE 1966S0103861 DE1966S0103861 DE 1966S0103861 DE S0103861 A DES0103861 A DE S0103861A DE 1575609 B2 DE1575609 B2 DE 1575609B2
Authority
DE
Germany
Prior art keywords
bearing
shaft
ball bearing
cap
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
Application number
DE1966S0103861
Other languages
German (de)
Other versions
DE1575609C3 (en
DE1575609A1 (en
Inventor
Helmut 8701 Reichenberg 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

Die Erfindung bezieht sich auf ein Kugellager der im Oberbegriff des Hauptanspruchs angegebenen Art, das z. B. aus der CH-PS 3 78 601 (Fig. 2, rechte Hälfte) bekannt ist.The invention relates to a ball bearing of the type specified in the preamble of the main claim, which z. B. from CH-PS 3 78 601 (Fig. 2, right half) is known.

In der DT-PS 8 65 693 wird ein einstellbares und somit in seiner Halterung verstellbares Kalottenlager einem Kugellager-Festlager gegenübergestellt. In dieser vergleichenden Gegenübersteilung wird das einstellbare Kalottenlager durch einen federnden Lagerdeckel, dagegen das Kugellager-Festlager ausdrücklich durch einen starren Lagerdeckel gegenüber dem Lagergehäuse gesichert.In the DT-PS 8 65 693 an adjustable and thus adjustable in its holder is a spherical bearing juxtaposed with a ball bearing fixed bearing. In this comparative confrontation, the adjustable Spherical bearing by a resilient bearing cover, on the other hand the ball bearing fixed bearing expressly through a rigid bearing cap secured against the bearing housing.

Aufgabe der Erfindung ist es, die feste Halterung des Kugellagers im Lagerschild so zu gestalten, daß keine Verformung der Lagerschildbohrung und damit des Lageraußenlaufringes auftreten kann, die Ursache für Lagergeräusche und für den Ausfall des Lagers sein kann.The object of the invention is to make the fixed mounting of the ball bearing in the end shield so that none Deformation of the end shield bore and thus of the bearing outer race can occur, the cause of Bearing noise and for the failure of the bearing can be.

Diese Aufgabe wird erfindungsgemäß durch das kennzeichnende Merkmal des Hauptanspruchs gelöst. Dadurch treten beim Anziehen der Befestigungsschrauben der am Lagerschild anzubringenden Lagerkappe im Vergleich zu bekannten Festlagern um ein mehrfaches verminderte Biegespannungen auf. Solche Biegespannungen werden dadurch verursacht, daß die der Lagerkappe zugewandte Stirnfläche des Kugellagers (Außenring) um ein geringes Maß aus der zylindrischen Bohrungsaufnahme des Lagerschildes hervorsteht und durch die Lagerkappe bei deren Anschrauben an das Lagerschild in die Lageraufnahme gedruckt wird. Die bei zu starkem Biegemoment hervorgerufene ovale ίο Verformung der zylindrischen Bohrung wird auch auf den Außenring des Kugellagers übertragen, so daß je nach dem Verformungsgrad mehr oder weniger starke Kugellagergeräusche auftreten können. Durch die erfindungsgemäße Ausgestaltung der in sich selbst elastisch federnden Lagerkappe wird mit einfachen Mitteln ohne zusätzliche elastische Teile wie Gummiringe usw. einerseits eine feste Halterung des Kugellagers gewährleistet und andererseits eine unerwünschte Verformung mit den dadurch verbundenen Kugellagergeräuschen vermieden.According to the invention, this object is achieved by the characterizing feature of the main claim. As a result, when the fastening screws are tightened, the bearing cap to be attached to the end shield occurs in the Compared to known fixed bearings, bending stresses are several times lower. Such bending stresses are caused by the end face of the ball bearing facing the bearing cap (Outer ring) protrudes by a small amount from the cylindrical bore receptacle of the end shield and is printed by the bearing cap when it is screwed onto the bearing plate into the bearing receptacle. the Oval ίο deformation of the cylindrical bore caused by too strong a bending moment also occurs the outer ring of the ball bearing transferred so that depending on the degree of deformation more or less strong Ball bearing noises can occur. Due to the inventive design of the in itself The elastic spring bearing cap is made with simple means without additional elastic parts such as rubber rings etc. on the one hand ensures a firm mounting of the ball bearing and on the other hand an undesirable one Deformation with the associated ball bearing noise avoided.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous refinements of the invention are specified in the subclaims.

Anhand der Zeichnung, in der ein Ausführungsbeispiel dargestellt ist, wird die Erfindung erläutert.
F i g. 1 zeigt eine Ansicht der Lagerkappe und
F i g. 2 einen Schnitt nach der Linie H-II in F i g. 1.
Mit 1 ist ein Lagerschild eines Motors bezeichnet, der eine zylindrische Bohrung 2 zur Aufnahme eines Kugellagers 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 verformen kann, sind konzentrisch verlaufende Schlitze 6 im Bereich der Befestigungsschrauben 7 der Lagerkappe 5 vorgesehen. Wie das Momentendiagramm rechts von F i g. 2 zeigt, hat das Biegemoment m bei elastischer Lagerkappe einen wesentlich geringeren Wert als das Biegemoment M bei unelastischer Lagerkappe, wie durch gestrichelt gezeichnete Linien zu ersehen ist. Durch die erfindungsgemäße Maßnahme können daher die Kugellagergeräusche und damit der Ausfall praktisch beseitigt werden. Ferner ergeben sich fertigungstechnische Vorteile, da keine engen Fertigungstoleranzen eingehalten zu werden brauchen.The invention is explained with the aid of the drawing, in which an exemplary embodiment is shown.
F i g. 1 shows a view of the bearing cap and
F i g. 2 shows a section along the line H-II in FIG. 1.
1 with a bearing plate of a motor is referred to, which has a cylindrical bore 2 for receiving 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, concentrically running slots 6 are provided in the area of the fastening screws 7 of the bearing cap 5. Like the moment diagram to the right of FIG. 2 shows, the bending moment m in the case of an elastic bearing cap has a significantly lower value than the bending moment M in the case of an inelastic 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 therefore be practically eliminated. Furthermore, there are advantages in terms of manufacturing technology, since no tight manufacturing tolerances need to be adhered to.

In F i g. 1 sind nur zwei Befestigungsschrauben dargestellt. Bei drei und mehr Schrauben können entsprechend mehr Schlitze verwendet sein.In Fig. 1 only two fastening screws are shown. With three or more screws you can accordingly more slots can be used.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (4)

Patentansprüche:Patent claims: 1. Als Festlager für die Lagerung der Welle eines Elektromotors dienendes Kugellager, das in eine Bohrung eines Lagerschilds eingepaßt ist und dessen Außenlaufring von einer am Lagerschild festgeschraubten Lagerkappe gegen eine Schulter im Lagerschild gedruckt wird, dadurch gekennzeichnet, daß die Lagerkappe (5) im Bereich des Außenlaufrings des Kugellagers (3), elastisch ausgebildet ist.1. As a fixed bearing for the storage of the shaft of an electric motor serving ball bearing, which is in a Bore of a bearing plate is fitted and the outer race of one screwed to the bearing plate Bearing cap is printed against a shoulder in the bearing plate, characterized in that that the bearing cap (5) is elastic in the area of the outer race of the ball bearing (3) is. 2. Lager nach Anspruch 1, dadurch gekennzeichnet, daß in der Lagerkappe (5) konzentrisch zur Welle (4) verlaufende Schlitze (6) vorgesehen sind.2. Bearing according to claim 1, characterized in that in the bearing cap (5) concentrically to Shaft (4) extending slots (6) are provided. 3. Lager nach Anspruch 2, dadurch gekennzeichnet, daß jedem Schlitz (6) eine Schraube (7) zum Befestigen der Lagerkappe (5) an dem Lagerschild (1) zugeordnet ist.3. Bearing according to claim 2, characterized in that each slot (6) has a screw (7) for Attaching the bearing cap (5) to the bearing plate (1) is assigned. 4. Lager nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Schlitze (6) auf Kreisen mit unterschiedlichem Radius angeordnet sind und sich teilweise überlappen.4. Bearing according to claim 2 or 3, characterized in that the slots (6) on circles with are arranged with different radius and partially overlap.
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 DE1575609A1 (en) 1970-01-29
DE1575609B2 true 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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2939560A1 (en) * 1979-09-29 1981-04-23 Siemens AG, 1000 Berlin und 8000 München Bearing cap for small machine ball race - giving firm location without requiring close dimensional tolerances for bearing housing
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

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113326A (en) * 1976-07-19 1978-09-12 Motorola, Inc. Alternator bearing retainer plate
FR2617934B1 (en) * 1987-04-08 1992-01-17 Valeo SHOCK ABSORBER FOR A TORQUE TRANSMISSION DEVICE INCORPORATING A BEARING WITH TWO ROWS OF BEARING ELEMENTS
DE19934000A1 (en) * 1999-07-20 2001-01-25 Mannesmann Vdo Ag 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
WO2003069765A1 (en) * 2002-02-18 2003-08-21 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
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
DE102008054850A1 (en) * 2008-12-18 2010-07-01 Robert Bosch Gmbh Machine with storage device
DE102008054848A1 (en) * 2008-12-18 2010-07-01 Robert Bosch Gmbh Machine with storage device
DE102013222050B4 (en) * 2013-10-30 2015-05-13 Aktiebolaget Skf bearing arrangement
JP6515565B2 (en) 2014-05-27 2019-05-22 日本精工株式会社 Bearing device and fixing plate for bearing device
FR3056843B1 (en) * 2016-09-28 2019-11-15 Valeo Equipements Electriques Moteur ROTATING ELECTRICAL MACHINE WITH IMPROVED SHAFT MOUNTING CONFIGURATION
JP6766902B2 (en) * 2019-01-28 2020-10-14 株式会社明電舎 Bearing holding plate and rotary electric machine using it
DE102019115292A1 (en) * 2019-06-06 2020-12-10 Schaeffler Technologies AG & Co. KG Bearing plate with recessed end face and adjacent flange

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2939560A1 (en) * 1979-09-29 1981-04-23 Siemens AG, 1000 Berlin und 8000 München Bearing cap for small machine ball race - giving firm location without requiring close dimensional tolerances for bearing housing
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

Also Published As

Publication number Publication date
DE1575609C3 (en) 1980-09-04
DE1575609A1 (en) 1970-01-29

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Legal Events

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