DE2059017A1 - Low power electric motor - Google Patents
Low power electric motorInfo
- Publication number
- DE2059017A1 DE2059017A1 DE19702059017 DE2059017A DE2059017A1 DE 2059017 A1 DE2059017 A1 DE 2059017A1 DE 19702059017 DE19702059017 DE 19702059017 DE 2059017 A DE2059017 A DE 2059017A DE 2059017 A1 DE2059017 A1 DE 2059017A1
- Authority
- DE
- Germany
- Prior art keywords
- spring
- electric motor
- ball bearing
- ring
- sheet metal
- 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
-
- 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
- H02K5/15—Mounting arrangements for bearing-shields or end plates
-
- 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
- F16C35/06—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
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Frames (AREA)
Description
Elektromotor geringer Leistung Die Erfindung bezieht sich auf einen Elektromotor geringer Leistung mit in Kugellagern gelagerter Läuferwelle und mindestens einem dünnwandigen, insbesondere aus Blech geringer Dicke hergestellten Lagerschild zur Aufnahme eines Kugellagers, wobei das Kugellager mittels eines Nontageringes in Form einer Feder und unter gleichzeitiger Sicherung gegen Verdrehung in die unbearbeitete, im Sonderfall kalibriefe Lageraufnahme des Lagerschildes eingesetzt ist, gemäß Patent ............. (Anm. Aktz. P 19 47 732.8).Low power electric motor The invention relates to a Low power electric motor with a rotor shaft mounted in ball bearings and at least a thin-walled end shield, in particular made of sheet metal of small thickness for receiving a ball bearing, the ball bearing by means of a mounting ring in the form of a spring and at the same time secured against twisting in the unprocessed, in the special case calibrated bearing mounting of the end shield is used, according to the patent ............. (note file number P 19 47 732.8).
Es hat sich herausgestellt, daß die im Hauptpatent als Montagering beschriebene geschlitzte Dellerfeder, welche in eine Rille des Kugellageraußenringes eingreift und sowohl die axiale Verschiebung und Verdrehung des Kugellagers verhindern als auch die Anstellung der Motorwelle bewirken soll, nicht in allen Anwendungsfällen eine optimal wirksame Konstruktion darstellt. Insbesondere in Fällen, in denen der fertig montierte, bereits mit Kugellagern versehene Läufer aus Gründen der vereinfachten Montage von einer Stirnseite her durch die Bohrung des Ständerblechpaketes geschoben werden soll, erweist sich eine Tellerfeder der vorgeschriebenen Art zumeist als im Durchmesser zu groß, wodurch bei der Nontage des Rotors ein erheblicher Hehraufwand erforderlich wird. Der Durchmesser der Tellerfeder ergibt sich aus demjenigen des Kugellagers, dessen Abmessungen auch bei Kleinstmotoren den gangigen Maßen entsprechen müssen, wenn eine wirtschaf-tliche Fertigung erreicht werden soll. Ebenso tritt häufig der Fall ein, daß die Tellerfeder bei zu großer axialer toleranz zwischen beiden Lagerschilden des No tors und bei starker Belastung in axialer Pdchtung durchgedrückt wird, uriiklappt und sich nicht mehr von selbst rückstellt. Damit ist jedoch die Feder nicht mehr wirksam und der Motor unbrauchbar.It has been found that in the main patent as a mounting ring described slotted Deller spring, which in a groove of the ball bearing outer ring engages and prevents both the axial displacement and rotation of the ball bearing as well as the adjustment of the motor shaft, not in all applications represents an optimally effective construction. Especially in cases where the fully assembled runners already provided with ball bearings for the sake of simplicity Assembly pushed through the hole in the stator core from one end should be, turns out to be a Disc spring of the prescribed Kind mostly than too big in diameter, which makes a considerable amount when assembling the rotor Additional effort is required. The diameter of the disc spring results from that of the ball bearing, the dimensions of which correspond to the usual dimensions even for miniature motors must if economical production is to be achieved. Likewise occurs It is often the case that the disc spring is too large an axial tolerance between both end shields of the No tor and pushed through in the axial Pdchtung under heavy load becomes, uriiklappen and no longer resets itself. With that, however, the The spring is no longer effective and the motor is unusable.
Der Erfindung liegt die aufgabe zugrunde, die beschriebenen Nachteile zu beseitigen und eine Feder zu entwickeln, welche zusätzlich dazu leicht montierbar und einfach herstellbar ist.The invention is based on the object of the described disadvantages to eliminate and to develop a spring, which is also easy to assemble and is easy to manufacture.
Erfindungsgemäß wird bei einem Elektromotor geringer Leistung der eingangs beschriebenen Art vorgeschlagen, daß die Feder als flacher, gewellter Federring ausgebildet ist, an dessen Innenumfang mehrere Vorsprünge angeordnet sind, welchen eine Rille im Umfang des Außenringes des Kugellagers eingreifen und dessen Außenumfang mindestens eine Nase aufweist.According to the invention, in the case of an electric motor with low power, the Proposed type described above that the spring as a flat, corrugated spring ring is formed, on the inner circumference of which a plurality of projections are arranged, which engage a groove in the circumference of the outer ring of the ball bearing and its outer circumference has at least one nose.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigen: Fig. 1 die Draufsicht auf den Federring, Fig. 2 die Seitenansicht des Federringes und Fig. 3 ein eingebautes Kugellager mit aufgesetztem Federring.An embodiment of the invention is shown in the drawing and is described in more detail below. They show: FIG. 1 the top view of the Circlip, FIG. 2 shows the side view of the circlip and FIG. 3 shows a built-in ball bearing with attached spring ring.
In der Fig. 1 ist der Federring 1 in der Draufsicht dargestellt. Auf seiner Innenseite befinden sich drei Vorsprünge 2 und an seinem Außenumfang eine Nase 3.In Fig. 1, the spring ring 1 is shown in plan view. on its inside there are three projections 2 and one on its outer circumference Nose 3.
In der Fig. 2 ist die Seitenansicht des Federringes dargestellt, aus welcher zu erkennen ist, daß der Federring beispielsweise eine dL'eifache, umje 120° versetzte Wellung besitzt.In Fig. 2, the side view of the spring ring is shown, from which can be seen that the spring ring, for example, a dL'efache, umje Has 120 ° offset corrugation.
In der Fig. 3 ist der Federring 1 im Zusammenhang mit dem in den Lagerschild 4 eingesetzten FXugellager 5 dargestellt. In den Außenring des Kugellagers 5 ist eine Rille 6 eingearbeitet, in welche die Vorsprünge 2 des Federring 1 gerade über den Kugellageraußenring geschoben werden kann. Beim Zurückfedern in die gewellte Form verringert sich der Innendurchmesser des Federringes soweit, daß die Vorsprünge 2 fest und nahezu verdrehsicher auf dem Boden der Rille 6 aufsitzen. Wird der Federring weiter in Motorachsrichtung zusammengedrückt, wie dies üblicher Weise bei der Montage des llotors geschieht, so graben sich die Vorsprünge 2 tiefer in die Rille 6 ein, eine Verdrehung des Federringes ist dann nicht mehr möglich.In Fig. 3, the spring ring 1 is in connection with that in the end shield 4 used F-ball bearings 5 shown. In the outer ring of the ball bearing 5 is a groove 6 incorporated into which the projections 2 of the spring ring 1 just about the ball bearing outer ring can be pushed. When springing back into the corrugated Shape, the inner diameter of the spring washer is reduced to such an extent that the projections 2 sit firmly and almost twist-proof on the bottom of the groove 6. Will the spring ring further compressed in the direction of the motor axis, as is usually the case during assembly of the motor happens, the projections 2 dig deeper into the groove 6, a twisting of the spring washer is then no longer possible.
Das Kugellagen 5 ist im Preßsitz auf der Rotorwelle 7 befestigt und in die vorzugsweise durch einfaches Ausstanzen ohne weitere Bearbeitung hergestellte, allenfalls kalibrierte Lageraufnahme 8 des Lagerschildes 4 eingesetzt. Um eine Verdrehsicherung des Kugellageraußenringes gegenüber dem Lagerschild zu erreichen, ist beispielsweise aus diesem ein Lappen 9 ausgeklinkt, an welchem die Nase 3 des Federringes 1 anstößt. Der Federring 1 wirkt gleichzeitig als toleranzausgleichende anstellfeaer bei der Montage des Motors. Durch die vorgesehene Wellung entsteht ein relativ großer Federweg, durch welchen auch größere ,röPere Toleranzenbei der Montage einwandfrei ausgeglichen werden können.The ball bearings 5 is fastened in a press fit on the rotor shaft 7 and in the preferably produced by simply punching out without further processing, if necessary, calibrated bearing receptacle 8 of the end shield 4 is used. To prevent rotation to achieve the ball bearing outer ring with respect to the bearing plate is, for example from this a tab 9 notched, on which the nose 3 of the spring ring 1 abuts. The spring ring 1 also acts as a tolerance-compensating adjustment fiber in the Assembling the engine. The intended corrugation creates a relatively large spring deflection, which also perfectly compensates for larger, larger tolerances during assembly can be.
Die Formgebung des Federringes bringt es mit sich, daß seine Breite relativ schmal gehalten werden kann. Wird auch der Vorsprung 3 möglichst kurz gehalten, ist es in vorteilhafter Weise möglich, den Läufer mit auf seiner Welle aufmontierten Kugellager und daraufgesetztem Federring von einer Stirnseite her durch die Bohrung des Ständerblechpaketes zu schieben, wodurch die Montage des Motores erheblich vereinfacht wird.The shape of the spring ring means that its width can be kept relatively narrow. If the projection 3 is also kept as short as possible, it is advantageously possible to have the rotor mounted on its shaft Ball bearing and attached spring washer through the bore from one end face of the stator core, which considerably simplifies the assembly of the motor will.
Die Anordnung hat den Vorteil, daß ein einziger Federring sowohl zur Sicherung des Kugellagers gegen Verdrehung und axiale Verschiebung als auch als Anstellfeder für die Motorwelle dient. Seine Befestigung auf dem Kugellageraußenring ist einfach, er ist bei Montage und Demontage unverlierbar. Sein Federweg ist trotz geringstmöglicher äußerer Abmessungen relativ groß.The arrangement has the advantage that a single spring washer for both Securing the ball bearing against rotation and axial displacement as well as Adjustment spring for the motor shaft is used. Its fortification on the Ball bearing outer ring is simple, it cannot be lost during assembly and disassembly. Its spring travel is relatively large despite the smallest possible external dimensions.
- Patentansprüche -- patent claims -
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1947732A DE1947732B2 (en) | 1969-09-20 | 1969-09-20 | Bearing assembly for low-power electric motor - has slotted diaphragm spring linking bearing plate and ball bearing |
DE19702059017 DE2059017A1 (en) | 1969-09-20 | 1970-12-01 | Low power electric motor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1947732A DE1947732B2 (en) | 1969-09-20 | 1969-09-20 | Bearing assembly for low-power electric motor - has slotted diaphragm spring linking bearing plate and ball bearing |
DE19702059017 DE2059017A1 (en) | 1969-09-20 | 1970-12-01 | Low power electric motor |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2059017A1 true DE2059017A1 (en) | 1972-06-08 |
Family
ID=34712091
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1947732A Ceased DE1947732B2 (en) | 1969-09-20 | 1969-09-20 | Bearing assembly for low-power electric motor - has slotted diaphragm spring linking bearing plate and ball bearing |
DE19702059017 Pending DE2059017A1 (en) | 1969-09-20 | 1970-12-01 | Low power electric motor |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1947732A Ceased DE1947732B2 (en) | 1969-09-20 | 1969-09-20 | Bearing assembly for low-power electric motor - has slotted diaphragm spring linking bearing plate and ball bearing |
Country Status (1)
Country | Link |
---|---|
DE (2) | DE1947732B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4019749A1 (en) * | 1990-06-21 | 1992-01-09 | Bosch Gmbh Robert | ELECTROMAGNETIC TURNTABLE |
DE19843226A1 (en) * | 1998-09-22 | 2000-03-30 | Buhler Motor Gmbh | Bearing assembly for subfractional-horsepower electrical motor includes corrugated spire washer centering itself on shaft and assisting bearing centering and mounting at blind end of motor casing |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3149106A1 (en) * | 1981-12-11 | 1983-06-23 | Robert Bosch Gmbh, 7000 Stuttgart | ELECTRICAL SMALL MACHINE, ESPECIALLY SMALL MOTOR |
DE19805844A1 (en) * | 1998-02-13 | 1999-08-19 | Itt Mfg Enterprises Inc | Electric motor with at least one bearing |
DE102004053078B4 (en) * | 2004-11-03 | 2008-07-10 | Ab Skf | Lageranordung |
DE102006034921A1 (en) * | 2006-07-28 | 2008-01-31 | Schaeffler Kg | bearing bracket |
DE102009015025B4 (en) * | 2008-07-11 | 2010-04-15 | Ab Skf | roller bearing assembly |
-
1969
- 1969-09-20 DE DE1947732A patent/DE1947732B2/en not_active Ceased
-
1970
- 1970-12-01 DE DE19702059017 patent/DE2059017A1/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4019749A1 (en) * | 1990-06-21 | 1992-01-09 | Bosch Gmbh Robert | ELECTROMAGNETIC TURNTABLE |
DE19843226A1 (en) * | 1998-09-22 | 2000-03-30 | Buhler Motor Gmbh | Bearing assembly for subfractional-horsepower electrical motor includes corrugated spire washer centering itself on shaft and assisting bearing centering and mounting at blind end of motor casing |
Also Published As
Publication number | Publication date |
---|---|
DE1947732B2 (en) | 1979-08-09 |
DE1947732A1 (en) | 1971-04-08 |
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