FR2639160A1 - Device for adjusting axial play for electric motor - Google Patents
Device for adjusting axial play for electric motor Download PDFInfo
- Publication number
- FR2639160A1 FR2639160A1 FR8814912A FR8814912A FR2639160A1 FR 2639160 A1 FR2639160 A1 FR 2639160A1 FR 8814912 A FR8814912 A FR 8814912A FR 8814912 A FR8814912 A FR 8814912A FR 2639160 A1 FR2639160 A1 FR 2639160A1
- Authority
- FR
- France
- Prior art keywords
- rotor
- axis
- electric motor
- stack
- 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
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
- H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
- H02K5/1672—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at both ends of the rotor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
L'invention concerne le domaine des moteurs électriques du type asynchrone et plus particulièrement de ceux dont le stator et le rotor sont obtenus par un empilage de tôles magnétiques.The invention relates to the field of electric motors of the asynchronous type and more particularly of those whose stator and rotor are obtained by a stack of magnetic sheets.
Dans ce type de moteur électrique les tolérances de fabrication des tôles constituant d'une part le rotor.In this type of electric motor the manufacturing tolerances of the sheets constituting on the one hand the rotor.
d'autre part le stator sont telles que les valeurs du jeu axial résultant, de l'axe entre le rotor et les coussinets peuvent varier dans d'importantes proportions ; pour un bon fonctionnement mécanique le jeu en question doit etre réduit à une faible valeur prédéterminée.on the other hand the stator are such that the values of the resulting axial clearance, of the axis between the rotor and the bearings can vary in significant proportions; for proper mechanical operation, the clearance in question must be reduced to a low predetermined value.
De manière traditionnelle cet ajustage est réalisé en montant sur l'axe des rondelles de compensation en épaisseur et nombre convenable pour obtenir la valeur du jeu nécessaire mais cette manière d'opérer oblige à réaliser des montages et démontages successifs des composants du moteur pour ajouter ou retirer des rondelles ou encore en changer l'épaisseur, opérations qui augmentent les temps de fabrication. nuisent à l'automatisation du processus et renchérissent les couts.Traditionally, this adjustment is carried out by mounting on the axis of the compensating washers in thickness and suitable number to obtain the value of the clearance required, but this manner of operating requires successive mounting and dismounting of the engine components to add or remove washers or change their thickness, operations which increase manufacturing times. undermine the automation of the process and increase costs.
L'invention vient apporter une solution intéressante à ce problème et présente à cet effet un moteur électrique du type asynchrone comprenant un bâti formé de deux ponts enserrant un stator composé d'un empilage de tôles, un rotor également composé d'un empilage de tôles assemblé à un axe monté rotatif sur deux coussinets coopérant avec le bâti, un moyen de réglage du jeu axial du rotor par rapport aux coussinets et caractérisé par le fait que ce moyen de réglage comprend au moins un élément déformable.The invention provides an interesting solution to this problem and presents for this purpose an electric motor of the asynchronous type comprising a frame formed by two bridges enclosing a stator composed of a stack of sheets, a rotor also composed of a stack of sheets assembled to an axis rotatably mounted on two bearings cooperating with the frame, a means for adjusting the axial clearance of the rotor relative to the bearings and characterized in that this adjustment means comprises at least one deformable element.
Avantageusement cet élément déformable est une pièce sensiblement en forme de diabolo. Advantageously, this deformable element is a part substantially in the form of a diabolo.
Avantageusement encore cet élément déformable est rendu solidaire de l'axe du rotor.Advantageously, this deformable element is made integral with the axis of the rotor.
L'invention sera mieux comprise à l'aide de la description suivante de l'exemple préféré du dispositif de l'invention en liaison avec le dessin dans lequel:
- La figure 1 représente en coupe un moteur
électrique équipé du dispositif selon l'invention.The invention will be better understood using the following description of the preferred example of the device of the invention in conjunction with the drawing in which:
- Figure 1 shows in section a motor
electric fitted with the device according to the invention.
- La figure Z illustre l'opération de réglage du jeu
axial du rotor.- Figure Z illustrates the clearance adjustment operation
axial of the rotor.
- La figure 3 représente en coupe un exemple du
dispositif selon l'invention.- Figure 3 shows in section an example of
device according to the invention.
Comme il apparait sur l'exemple illustré par la figure 1.As it appears on the example illustrated by figure 1.
le moteur comprend un stator 1 formé d'un empilage de tôles magnétiques comportant un évidement interne cylindrique à l'intérieur duquel est monté mobile en rotation un rotor 2 comprenant lui-même un empilage de tôles magnétiques solidaire d'un axe 3 maintenu radialement par deux coussinets 4a, 4b chacun deux coopèrant respectivement avec les ponts 5, 6, montés chacun respectivement de part et d'autre des faces planes du stator 1 ; le pont 5, le stator 1, le pont 6 étant maintenus solidaires ici par des rivets 7.the motor comprises a stator 1 formed of a stack of magnetic sheets comprising a cylindrical internal recess inside which is rotatably mounted a rotor 2 itself comprising a stack of magnetic sheets secured to an axis 3 held radially by two bearings 4a, 4b each two respectively cooperating with the bridges 5, 6, each mounted respectively on either side of the planar faces of the stator 1; the bridge 5, the stator 1, the bridge 6 being held together here by rivets 7.
Pour compenser le jeu axial du rotor et selon l'invention.To compensate for the axial play of the rotor and according to the invention.
on intercale entre les faces sensiblement planes du rotor 2 et chacun des coussinets 4a, 4b, une pièce 8, 9 en matériau ductile, ici en laiton : sensiblement en forme de diabolo ou encore de manchon évasé à ses deux extrémités, de diamètre intérieur sensiblement égal au diamètre extérieur de l'axe 3 et dont les extrêmités évasées prennent appui. l'une contre une face du rotor 1. l'autre au jeu nécessaire et prédéterminé prés contre le coussinet en regard. interposed between the substantially flat faces of the rotor 2 and each of the bearings 4a, 4b, a part 8, 9 made of ductile material, here made of brass: substantially in the form of a diabolo or else of a flared sleeve at its two ends, of substantially internal diameter equal to the outside diameter of axis 3 and whose flared ends are supported. one against one face of the rotor 1. the other at the necessary and predetermined clearance near against the opposite bearing.
La figure 2 illustre de manière claire l'opération permettant de déformer les manchons 8. 9 et obtenir le jeu axial désiré du rotor
Sur un bâti d'assemblage comprenant une partie fixe 10 et au moins deux colonnettes 11, on enfile au travers de ces colonnettes 11 le premier pont 6. le premier coussinet 4b.Figure 2 clearly illustrates the operation to deform the sleeves 8. 9 and obtain the desired axial clearance of the rotor
On an assembly frame comprising a fixed part 10 and at least two posts 11, the first bridge 6 is threaded through these posts 11. The first pad 4b.
le stator 1, le rotor 2 avec son axe 3 équipé du premier manchon 9 et le second manchon 8 ; puis en dernier lieu une pièce 12 du bâti d'assemblage montée coulissante le long de l'axe 3 et des colonnettes 11 et comprenant deux faces d'appui en forme de couronnes circulaires, l'une 120 pour coopèrer par contact avec le stator 1, l'autre 121 pour coopèrer par contact avec le manchon 8.L'opérateur ou l'automatisme de montage applique alors une force F sur la pièce mobile 12 selon l'axe de l'assemblage jusqu'à ce que l'appui 120 vienne en contact du stator 1 ; dans ces conditions l'appui 121 provoque deux déformations permanentes des manchons 8. 9 : l'une radiale permettant de les solidariser à l'axe 3, l'autre axiale pour assurer le jeu axial recherché du rotor 2 ; les côtes de la pièce mobile 12 sont déterminées pour que son remplacement par le second pont 5 muni de son coussinet 4a permette de terminer le montage du moteur par vissage ou rivetage (7 de la figure 1)tout en assurant un jeu axial de l'axe du rotor d'une valeur constante définie à l'avance pour le bon fonctionnement de l'ensemble.the stator 1, the rotor 2 with its axis 3 equipped with the first sleeve 9 and the second sleeve 8; then lastly a part 12 of the assembly frame slidably mounted along the axis 3 and the balusters 11 and comprising two bearing faces in the form of circular crowns, one 120 for cooperating by contact with the stator 1 , the other 121 to cooperate by contact with the sleeve 8. The operator or the automatic assembly then applies a force F on the moving part 12 along the axis of the assembly until the support 120 come into contact with stator 1; under these conditions, the support 121 causes two permanent deformations of the sleeves 8. 9: one radial enabling them to be secured to the axis 3, the other axial to ensure the desired axial play of the rotor 2; the ribs of the moving part 12 are determined so that its replacement by the second bridge 5 provided with its bearing 4a allows the assembly of the motor to be completed by screwing or riveting (7 in FIG. 1) while ensuring axial play of the rotor axis of a constant value defined in advance for the proper functioning of the assembly.
La figure 3 illustre en détail un exemple de dispositif de l'invention adapté à un rotor de 4 mm.FIG. 3 illustrates in detail an example of a device of the invention adapted to a 4 mm rotor.
Le manchon en laiton est un cylindre de diamètre intérieur 4.1 mm, d'épaisseur 0.25 mm de longueur 5,6 mm évasé en collerette à ses deux extrémités, l'une d'un diamètre de 6 mm, l'autre d'un diamètre de 7 mm. The brass sleeve is a cylinder with an internal diameter of 4.1 mm, a thickness of 0.25 mm, a length of 5.6 mm, flared with a flange at its two ends, one with a diameter of 6 mm, the other with a diameter 7 mm.
Le dispositif selon l'invention permet de reduire trés considérablement les coûts d'assemblage des moteurs électriques assurant le respect d'un jeu axial constant et répétitif du rotor The device according to the invention makes it possible to very considerably reduce the costs of assembling electric motors ensuring compliance with a constant and repetitive axial clearance of the rotor
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8814912A FR2639160B1 (en) | 1988-11-15 | 1988-11-15 | AXIAL GAME ADJUSTING DEVICE FOR ELECTRIC MOTOR |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8814912A FR2639160B1 (en) | 1988-11-15 | 1988-11-15 | AXIAL GAME ADJUSTING DEVICE FOR ELECTRIC MOTOR |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2639160A1 true FR2639160A1 (en) | 1990-05-18 |
| FR2639160B1 FR2639160B1 (en) | 1995-08-25 |
Family
ID=9371913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8814912A Expired - Fee Related FR2639160B1 (en) | 1988-11-15 | 1988-11-15 | AXIAL GAME ADJUSTING DEVICE FOR ELECTRIC MOTOR |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2639160B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013220049A1 (en) * | 2013-10-02 | 2015-04-02 | Robert Bosch Gmbh | Electric machine and method for adjusting the axial bearing clearance |
| IT201800010733A1 (en) * | 2018-11-30 | 2020-05-30 | Nidec Sole Motor Corp S R L | ELECTRIC MOTOR PERFECTED FOR LAUNDRY MACHINES |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1178934B (en) * | 1963-08-03 | 1964-10-01 | Heidolph Elektro K G | Adjustment of the axial play between the bearings in small electric motors |
| DE1613278A1 (en) * | 1967-10-11 | 1971-04-15 | Licentia Gmbh | Motor with reduced axial play |
| DE6608870U (en) * | 1966-06-07 | 1971-12-02 | Licentia Gmbh | DEVICE FOR REPORTING AXIAL VIBRATIONS IN ELECTRIC MOTORS. |
-
1988
- 1988-11-15 FR FR8814912A patent/FR2639160B1/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1178934B (en) * | 1963-08-03 | 1964-10-01 | Heidolph Elektro K G | Adjustment of the axial play between the bearings in small electric motors |
| DE6608870U (en) * | 1966-06-07 | 1971-12-02 | Licentia Gmbh | DEVICE FOR REPORTING AXIAL VIBRATIONS IN ELECTRIC MOTORS. |
| DE1613278A1 (en) * | 1967-10-11 | 1971-04-15 | Licentia Gmbh | Motor with reduced axial play |
Non-Patent Citations (1)
| Title |
|---|
| SOVIET INVENTIONS ILLUSTRATED * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013220049A1 (en) * | 2013-10-02 | 2015-04-02 | Robert Bosch Gmbh | Electric machine and method for adjusting the axial bearing clearance |
| IT201800010733A1 (en) * | 2018-11-30 | 2020-05-30 | Nidec Sole Motor Corp S R L | ELECTRIC MOTOR PERFECTED FOR LAUNDRY MACHINES |
| EP3661031A1 (en) * | 2018-11-30 | 2020-06-03 | Nidec Sole Motor Corporation S.r.l. | Improved electric motor for washing machines |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2639160B1 (en) | 1995-08-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CA | Change of address | ||
| CD | Change of name or company name | ||
| TP | Transmission of property | ||
| ST | Notification of lapse |