WO2004036718A1 - Moteur electrique muni d'un element de fixation pour le palier de l'arbre et outil utilise pour le montage dudit element de fixation - Google Patents

Moteur electrique muni d'un element de fixation pour le palier de l'arbre et outil utilise pour le montage dudit element de fixation Download PDF

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Publication number
WO2004036718A1
WO2004036718A1 PCT/EP2003/011009 EP0311009W WO2004036718A1 WO 2004036718 A1 WO2004036718 A1 WO 2004036718A1 EP 0311009 W EP0311009 W EP 0311009W WO 2004036718 A1 WO2004036718 A1 WO 2004036718A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
housing
electric motor
clamping
ring
Prior art date
Application number
PCT/EP2003/011009
Other languages
German (de)
English (en)
Inventor
Akram Ben Helal
Harald Schmidt
Ronald Frey
Werner Baeskow
Original Assignee
Valeo Motoren Und Aktuatoren Gmbh
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 Valeo Motoren Und Aktuatoren Gmbh filed Critical Valeo Motoren Und Aktuatoren Gmbh
Priority to AU2003267432A priority Critical patent/AU2003267432A1/en
Publication of WO2004036718A1 publication Critical patent/WO2004036718A1/fr

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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

Definitions

  • the invention relates to an electric motor with a motor shaft and a pot-like housing, in which the motor shaft is fixed to the housing base via a bearing.
  • the invention also relates to a tool for mounting such an electric motor.
  • Such electric motors have a housing in the form of a housing pot, which has a cylindrical basic shape and is provided on one side with a mounting opening for inserting the motor shaft and further motor components.
  • the housing base of this pot-like motor housing is regularly provided with means to fix a bearing for the motor shaft there.
  • FIG. 1 Such a structure, known from the prior art, of a housing with a shaft bearing is shown in FIG. 1.
  • the housing 1 of the electric motor is provided on its housing base 2 opposite to the mounting opening with a bearing 2.
  • the housing base 2 is formed on the outside, so that a bearing seat 4 for a plain bearing 3 is formed.
  • a retaining ring 7 is fastened after inserting the bearing 3 into the bearing seat 4 by caulking between the bearing 3 and the wall of the housing 1.
  • the bearing 3 is held centered with respect to a central axis M of the electric motor.
  • the motor shaft and the other components can then be inserted into the housing 1 and the latter can be closed.
  • a disadvantage of this known type of fixing the bearing 3 to the housing base 2 is, on the one hand, that the bearing is firmly and non-detachably connected to the housing by caulking or non-positively jamming the retaining ring 7 between the bearing 3 and the wall of the housing 1.
  • the operation of caulking the retaining ring 7 is also complex.
  • Another disadvantage is that the bearing seat 4 increases the overall depth of the motor and thus the required installation space by shaping the housing base 2 to the outside.
  • the invention has for its object to provide an electric motor with fasteners for the motor shaft bearing and a tool for assembling an electric motor, which are simpler in terms of assembly and enable releasable fixation of a shaft bearing.
  • the overall depth of such motors is to be reduced.
  • the electric motor according to the invention according to claim 1 has a pot-like housing, in which the motor shaft is rotatably fixed via a bearing on the housing base, the bearing being centered with respect to a central axis of the housing and fastened to the inside thereof by means of a bearing seat and a fastening element.
  • the fastening element is a clamping ring which can be releasably clamped to the housing base for centering and fixing the bearing via an annular clamping section centered with respect to the central axis.
  • the clamping section can be provided as a separate prong ring or the like or can be formed in one piece with the clamping ring.
  • the attachment according to the invention by means of a clamping ring and an annular, centered clamping section also ensures that the bearing is mounted centered with respect to the motor housing or the electric motor, regardless of the angle of rotation and without further design measures.
  • the provision of a clamping section on the inside of the housing base also has the advantage that the required overall length of the motor is reduced, since the motor base does not have to be shaped outwards to form lateral holding areas for caulking the clamping ring in a receptacle shaped in this way after insertion of the camp, as was previously required.
  • the bearing seat is formed by deforming the housing base inwards.
  • the bearing seat is simply formed by an annular shape of the housing base towards the inside in accordance with the outer dimensions of the respective bearing.
  • the bearing itself and the fastening element in the form of a clamping ring only protrude inward into the housing, so that the axial length of the housing and thus the motor as a whole is reduced.
  • the clamping ring has S-shaped sections when viewed in cross section. This shape of the clamping ring facilitates compression for insertion into or clamping behind the corresponding ring-shaped clamping sections on the housing base.
  • the S-shape also provides contact surfaces on which the clamping ring over appropriate tool or a pair of pliers can be gripped and pressed together.
  • the clamping ring can have radial interruptions.
  • the clamping ring has a plurality of protruding clamping fingers on its outer circumference. This ensures that the mounting of the bearing in the housing is centered with respect to its central axis.
  • the protruding clamping fingers facilitate the assembly of the clamping ring, since its peripheral clamping area can be deformed more easily.
  • the projecting clamping fingers also offer an additional spring action when they are clamped behind the clamping section, as a result of which the mounting and centering of the bearing are pretensioned.
  • the clamping ring has an essentially plate-like shape with a bulged central section and a flat circumferential region to form lateral engagement surfaces for compression for assembly and disassembly in the housing of the motor.
  • a “plate-like” shape is understood to mean a bulge in the central region of the ring, so that a shaping or deformation of the ring is formed between the outer, essentially flat peripheral section and the inner fastening recess for the bearing.
  • the depth of this shape preferably corresponds essentially to the width of the bearing, so that the latter is arranged as close as possible to the bottom of the pot of the housing.
  • the annular clamping section is an undercut that is circumferential and continuous.
  • This has the advantage that, in the case of a clamping ring with protruding fingers or sections on the outer circumference, assembly is independent of the angle of rotation with respect to the Housing can be carried out easily.
  • the protruding clamping fingers can be clamped behind the ring-shaped undercut on the housing base in any rotational position.
  • the undercut on the housing base has interruptions, that is to say only undercuts are formed in sections in the housing base. This has the advantage that the production of the undercut is simplified.
  • the clamping section is an annular undercut, which is formed by a deformation of the housing base itself. Compared to fastening a separate element, this has the advantage that fewer parts are required to manufacture the motor and the undercut for fastening the clamping ring according to the invention can be produced by a simple shaping operation.
  • the tool for mounting a clamping element for fixing a bearing in a pot housing of an electric motor with the features according to claim 9 is characterized in that it has ring-shaped grippers that are adapted to grip and compress the clamping element on the outer circumference.
  • the assembly and possibly also the disassembly of the bearing can be done by simply compressing the ring on the outer circumference and then inserting and . Clamp by loosening.
  • a complex processing, such as caulking the known retaining rings in the housing, is therefore not necessary to fix the bearing.
  • the tool is advantageously provided with a pliers mechanism which can be operated manually or by an automatic assembly machine.
  • Figure 1 is a sectional side view of a
  • Figure 2 is a sectional side view of a
  • 3a and 3b show a side view and a top view of a
  • Embodiment of a one-piece clamping ring for fastening a bearing in the housing of the electric motor according to an embodiment of the invention.
  • a housing 1 of an electric motor according to the prior art is shown in a side sectional view.
  • the housing 1 has a pot-like basic shape with a housing base 2 and an opposite opening, which is closed by means of (not shown) closure means after insertion of the motor shaft and other components.
  • a bearing 3 is provided on the housing base 2, in this exemplary embodiment a plain bearing, which in the assembled state serves to support a motor shaft.
  • the bearing 3 is received in a bearing seat 4 provided in the base 2 of the housing 1 and centered and fixed via a retaining ring 7.
  • the retaining ring 7 is fastened by caulking between the bearing 3 and lateral wall sections of the housing base 2, so that the bearing 3 is securely fixed. This type of fastening known from the prior art is not solvable.
  • the bearing seat 4 is formed by shaping or bulging the housing base 2 to the outside, as a result of which a projecting, outer section with a length X projects from the underside of the housing base 2.
  • the shape of the bearing seat 4 here has two stages, so that on the one hand a fixed fixing of the bearing 3 and on the other hand a lateral caulking of the retaining ring 7 is made possible. This results in an overall length of the housing pot 1 corresponding to A.
  • the housing pot 1 of the electric motor has a bearing seat 4 on the housing base 2, which is formed by bulges of the housing base 2 towards the inside. Furthermore, undercuts 8 are provided on the housing base 2 for clamping a clamping ring 6 according to the invention.
  • the clamping ring 6 has such a shape that it can be inserted into the position shown in FIG. 2 by pressing together on its outer circumference and then released again.
  • the clamping ring 6 has an S-shaped cross-section with a central holding opening on the inner circumference for the bearing 3 and clamping sections on the outer circumference for insertion and clamping holding behind the undercut 8 on the housing base 2.
  • the bearing 3 which in the present example is a plain bearing, can be inserted and clamped in a simple manner centered with respect to the central axis M of the housing 1.
  • the attachment is therefore releasable.
  • the total length B of the housing 1 is not increased by the provision of the bearing seat 4 and the fastening element 5 and is therefore reduced by the amount x compared to the length A according to the prior art (see FIG. 1). This reduces the overall length of the electric motor.
  • FIGS. 3a and 3b show the clamping ring 6 according to the exemplary embodiment from FIG. 2 in a side view and shown a top view.
  • the clamping ring 6 of this exemplary embodiment of the invention has on its outer circumference a plurality of projecting clamping fingers 9 which can be clamped in the annular undercut 8 shown in FIG. 2.
  • the clamping fingers 9 have a curvature, whereby a slight spring effect can be achieved.
  • the middle section of the clamping ring 6 has a bulbous, curved shape, so that lateral engagement surfaces 10 are formed, on which a clamping tool (not shown) can grip the clamping ring 6.
  • the ring can then be compressed in order to be clamped with its clamping fingers 9 on the outer circumference, independent of the angle of rotation, in the interior of the housing behind the undercut 8.
  • the clamping ring 6 has an opening with radially inwardly projecting holding sections 11 which, in the installed state, abut the outer circumference of the bearing 3 and likewise, by a certain spring action, the bearing 3 on its seat 4 in a centered position with respect to the central axis M of Hold housing.
  • the shape of the clamping ring is therefore matched to the shape of the corresponding bearing 3 and the undercut 8.
  • the invention is of course not limited to the form shown in FIGS. 3a and 3b and encompasses any configuration falling within the scope of claim 1.
  • the material of the clamping ring 6 is preferably metal and in particular spring steel.
  • the clamping ring is inserted and removed according to the invention using an adapted special tool, by means of which the clamping ring 6 can be pressed together on the outer circumference and which has a shape so that it can be inserted into the housing pot 1 of the electric motor.
  • FIG. 4a to 4c show further design variants of a clamping ring in the installed state in respective partial side views.
  • the clamping ring 6 is one one-piece clamping glasses formed with straight-shaped clamping fingers 9. After inserting the bearing 3 and the clamping glasses 6, the projecting clamping section 8 on the housing base 2 can be deformed or caulked. This creates a kind of undercut and the clamping glasses 6 are secured against loosening.
  • FIG. 4b shows a variant in this regard, in which a pair of clamping glasses 6 is combined with a toothed ring 12.
  • the latter has curved, finger-like, radial peripheral sections which can be inserted into the clamping section 8 with clamping.
  • the clamping section 8 can thus be provided straight (without an undercut) and can be formed by simply pressing or pressing the material of the housing base 2.
  • the clamping ring 6 is formed in one piece with a prong ring 12 which has S-shaped curved clamping fingers 9 on the circumference, which can be used as a clamping section in a simple projection on the housing base 2.
  • the number of parts required is reduced, and likewise a complex machining of the housing base 2 to produce an undercut.
  • a Housing length according to the state of the art x additional length of bearing seat / mounting

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

L'invention concerne un moteur électrique comportant un arbre et un carter (1) en forme de pot, dans lequel l'arbre est fixé rotatif sur le fond du carter (2), par l'intermédiaire d'un palier (3). Ledit palier est fixé à l'aide d'un siège de palier (4) et d'un élément de fixation (5), par rapport à un axe médian. L'élément de fixation (5) présente une bague de serrage (6) pouvant être montée par serrage sur le fond du carter, pour fixer et centrer le palier (3), par l'intermédiaire d'une section de serrage (8) annulaire et centrée par rapport à l'axe médian.
PCT/EP2003/011009 2002-10-09 2003-10-06 Moteur electrique muni d'un element de fixation pour le palier de l'arbre et outil utilise pour le montage dudit element de fixation WO2004036718A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003267432A AU2003267432A1 (en) 2002-10-09 2003-10-06 Electric motor comprising a fastening element for the shaft bearing, and tool for mounting this fastening element

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002147052 DE10247052A1 (de) 2002-10-09 2002-10-09 Elektromotor mit Befestigungselement für das Wellenlager sowie Werkzeug zur Montage eines derartigen Elektromotors
DE10247052.9 2002-10-09

Publications (1)

Publication Number Publication Date
WO2004036718A1 true WO2004036718A1 (fr) 2004-04-29

Family

ID=32038382

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/011009 WO2004036718A1 (fr) 2002-10-09 2003-10-06 Moteur electrique muni d'un element de fixation pour le palier de l'arbre et outil utilise pour le montage dudit element de fixation

Country Status (3)

Country Link
AU (1) AU2003267432A1 (fr)
DE (1) DE10247052A1 (fr)
WO (1) WO2004036718A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005030871A1 (de) * 2005-07-01 2007-01-11 Robert Bosch Gmbh Lagervorrichtung, Verfahren zur Befestigung einer Lagervorrichtung und elektrische Maschine mit einer Lagervorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088946A2 (fr) * 1982-03-16 1983-09-21 Siemens Aktiengesellschaft Petit moteur électrique avec dispositif pour la régulation du jeu axial
US5090273A (en) * 1989-07-28 1992-02-25 Gregory Fossella Adjustable ratchet wrench
US5838081A (en) * 1995-11-28 1998-11-17 Itt Automotive Electrical Systems, Inc. Motor having recessed area in motor case for retaining motor shaft bearing therein
US20020003911A1 (en) * 2000-07-10 2002-01-10 Smith Michael D. Electric motor bearing system and journal

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1844057U (de) * 1961-04-13 1961-12-28 Standard Elektrik Lorenz Ag Kalottenlagerbefestigung fuer elektromotoren.
DE7018428U (de) * 1970-05-16 1971-11-04 Licentia Gmbh Kleiner elektromotor mit topffoermigem gehaeuse.
DE7904209U1 (de) * 1979-02-15 1979-05-23 Ing. Lang & Menke Gmbh, 5870 Hemer Klemmvorrichtung fuer eine in pendelgleitlagern gehaltene welle
FR2639161A1 (fr) * 1988-11-14 1990-05-18 Valeo Rotule de palier, notamment de moteur electrique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088946A2 (fr) * 1982-03-16 1983-09-21 Siemens Aktiengesellschaft Petit moteur électrique avec dispositif pour la régulation du jeu axial
US5090273A (en) * 1989-07-28 1992-02-25 Gregory Fossella Adjustable ratchet wrench
US5838081A (en) * 1995-11-28 1998-11-17 Itt Automotive Electrical Systems, Inc. Motor having recessed area in motor case for retaining motor shaft bearing therein
US20020003911A1 (en) * 2000-07-10 2002-01-10 Smith Michael D. Electric motor bearing system and journal

Also Published As

Publication number Publication date
DE10247052A1 (de) 2004-04-22
AU2003267432A1 (en) 2004-05-04

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