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WO1992001325A1 - Cylindre d'alimentation en retour pour petits moteurs electriques - Google Patents

Cylindre d'alimentation en retour pour petits moteurs electriques Download PDF

Info

Publication number
WO1992001325A1
WO1992001325A1 PCT/DE1991/000540 DE9100540W WO9201325A1 WO 1992001325 A1 WO1992001325 A1 WO 1992001325A1 DE 9100540 W DE9100540 W DE 9100540W WO 9201325 A1 WO9201325 A1 WO 9201325A1
Authority
WO
WIPO (PCT)
Prior art keywords
segments
small motor
motor according
stator
small
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.)
Ceased
Application number
PCT/DE1991/000540
Other languages
German (de)
English (en)
Inventor
Richard Gerber
Bernd Taubitz
Karl-Heinz Haegele
Claus Kramer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO1992001325A1 publication Critical patent/WO1992001325A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings

Definitions

  • the invention relates to a small electric motor, in particular an electronically commutated small motor (EC motor) with an externally wound stator.
  • EC motor electronically commutated small motor
  • DE-GM 72 45 861 describes a small electric motor in which the stator is bent from two sheet metal parts which measure different circumferential areas, the two sheet metal parts having angled flanges at their ends for connection, by means of which they are held together. Furthermore, from DE-GM 76 08 871 a small electric motor with an annular permanent magnet as a stator emerges, in which the return cylinder consists of an axially slotted ring at at least one circumferential point.
  • the yoke cylinder is surrounded by a housing, axially extending webs being arranged in the housing, which engage in the axial slots and thus lock the yoke cylinder in the housing.
  • the yoke cylinder is made of solid material and is primarily only suitable for DC motors in which the problem of eddy current losses in the yoke cylinder does not occur. Therefore, these versions are not suitable for EC motors, because their Application increased eddy current losses occur.
  • EC motors are often manufactured with internal rotor permanent magnet rotors. Normally, therefore, the stator winding must be inserted into the stator slots that are open from the inside. This results in manufacturing difficulties, particularly in the case of small EC motors. Stators are therefore used that can be wound directly from the outside. This type of stators additionally require an outer yoke cylinder.
  • the small motor according to the invention with the characterizing features of the main claim has the advantage of greatly reduced eddy current losses with simple assembly of the laminated yoke cylinder.
  • the magnetic yoke it is particularly favorable if the radial division of the at least two segments of the yoke cylinder lies on the center of a stator pole. Both the positive and the non-positive connection of the segments of the return cylinder allow the tolerances of the assembly parts to be interpreted less closely.
  • FIG. 1 shows a perspective view of a stator that can be wound from the outside with a yoke cylinder according to the invention in a first exemplary embodiment
  • FIG. 2 shows a front view of the yoke cylinder of the first embodiment with a further variant of the stamping technology
  • FIG. 3 shows a front view of a stator that can be wound from the outside with the inventive Inference cylinder in a second embodiment.
  • FIG. 1 shows a stator 10 which has grooves 12 which are open to the outside for the winding.
  • the stator 10 is enclosed by a yoke cylinder 14.
  • the yoke cylinder 14 is composed of sheet metal lamellae 11 and consists of two half-shells 13.
  • the pitch of the return cylinder is arranged on the center of a stator pole 20.
  • the connection of the two half-shells 13 of the yoke cylinder 14 takes place in the present exemplary embodiment by means of mortise-and-tenon joints 15 of the individual electrical sheet lamellae.
  • each half-shell 13 has mutually overlapping and undercutting tongues 22 on the connection.
  • the interlocking of the mutually overlapping and undercut tongues 22 creates a positive connection between the two half-shells 13.
  • the positive connection can only be released after the elastic tensioning forces of the tongues 22 have been overcome.
  • stamping tap 15 of the two half-shells 13, as shown in FIG. 2 is that the tongue 22 of one half-shell 13 has a projection 23 and the tongue 22 of the other half-shell 13 has a notch 24, the projection 23 of the one tongue in the notch 24 engages the other tongue.
  • the tenons 15 can also have other suitable shapes. Together they all have the advantage that they can be produced on the individual electrical sheet lamella by punching in almost any shape.
  • the two half-shells 13 are produced in the usual way.
  • the electrical sheet metal lamellae are punched out as half segments and the individual sheet metal lamellae are joined to form a sheet metal package, so that the two half-shells 13 are formed.
  • this lacquer layer can be designed as an adhesive layer (baking lacquer).
  • the laminations are 11 in
  • the stator 10 After the stator 10 is provided with the winding, the winding taking place through the grooves 12 which are open from the outside and the
  • Winding head diameter can be greater than the mounting diameter of the yoke cylinder 14, the two half-shells 13 of the yoke cylinder 14 by side assembly on the Stator attached. It is advantageous to attach an additional anti-rotation device between the stator and yoke cylinder by pinning both components.
  • the yoke cylinder 14 also consists of two half-shells 13 which, as in the first exemplary embodiment, are likewise composed of electrical sheet metal lamellae.
  • the two half-shells 13 are butted against one another in their parting plane 21.
  • the division plane 21 is also placed in the middle of a stator pole as in the first embodiment.
  • the yoke cylinder 14 is fastened on the stator 10 by a force-locking tensioning of the two half-shells 13 by means of the motor housing 16.
  • the motor housing 16 is constructed from two radially divided housing halves 17, which enclose the half-shells 13. In the division plane 21, the two housing halves 17 each have an outwardly directed flange 18 on each side. The flanges 18 can be screwed together by means of the screws 19. By screwing the two housing halves 17, the two inner half-shells 13 of the yoke cylinder 14 are clamped non-positively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

Un petit moteur électrique, notamment un petit moteur à commutation électronique, comprend un stator à bobinage extérieur dont le circuit magnétique est fermé par un cylindre (14) d'alimentation en retour et qui contient au moins deux segments (13) radialement subdivisés (13), stratifiés en tôle magnétique.
PCT/DE1991/000540 1990-07-07 1991-06-29 Cylindre d'alimentation en retour pour petits moteurs electriques Ceased WO1992001325A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9010318U DE9010318U1 (de) 1990-07-07 1990-07-07 Rückschlußzylinder für elektrische Kleinmotoren
DEG9010318.1 1990-07-07

Publications (1)

Publication Number Publication Date
WO1992001325A1 true WO1992001325A1 (fr) 1992-01-23

Family

ID=6855407

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1991/000540 Ceased WO1992001325A1 (fr) 1990-07-07 1991-06-29 Cylindre d'alimentation en retour pour petits moteurs electriques

Country Status (3)

Country Link
DE (1) DE9010318U1 (fr)
PL (1) PL290905A1 (fr)
WO (1) WO1992001325A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997019506A1 (fr) * 1995-11-21 1997-05-29 Itt Automotive Electrical Systems, Inc. Stator a enroulement externe avec transition magnetique amrlioree
KR100602041B1 (ko) * 2002-08-09 2006-07-19 주식회사 원진 단열방진 경량콘크리트 조성물

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19853500A1 (de) * 1998-11-19 2000-05-25 Blocher Motor Gmbh Wicklungskörper für eine drehende elektrische Maschine
DE10152499A1 (de) 2001-10-24 2003-05-08 Pierburg Gmbh Elektromotor
DE102007033076A1 (de) 2007-07-13 2009-01-15 Dr. Fritz Faulhaber Gmbh & Co. Kg Elektrischer Kleinstantrieb sowie Rückschlusselement und Verfahren zu dessen Herstellung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1538196A (en) * 1921-12-06 1925-05-19 Safety Car Heating & Lighting Construction for dynamo-electric machines
FR955078A (fr) * 1950-01-07
BE694510A (fr) * 1966-03-16 1967-07-31
US3827141A (en) * 1972-05-17 1974-08-06 Skf Ind Trading & Dev Method of manufacturing an electric rotary machine
US3912955A (en) * 1973-11-19 1975-10-14 John R Simpson Electric dynamo
DE3906368A1 (de) * 1988-03-02 1989-09-14 Emiliane Trancerie Spa Verfahren zur herstellung eines statormagnetkreises von rotierenden elektrischen maschinen oder eines magnetkreises von transformatoren und ein so erhaltener magnetkreis
JPH0646745A (ja) * 1992-07-23 1994-02-22 Shimahisa Yakuhin Kk エビの品質保持法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR955078A (fr) * 1950-01-07
US1538196A (en) * 1921-12-06 1925-05-19 Safety Car Heating & Lighting Construction for dynamo-electric machines
BE694510A (fr) * 1966-03-16 1967-07-31
US3827141A (en) * 1972-05-17 1974-08-06 Skf Ind Trading & Dev Method of manufacturing an electric rotary machine
US3912955A (en) * 1973-11-19 1975-10-14 John R Simpson Electric dynamo
DE3906368A1 (de) * 1988-03-02 1989-09-14 Emiliane Trancerie Spa Verfahren zur herstellung eines statormagnetkreises von rotierenden elektrischen maschinen oder eines magnetkreises von transformatoren und ein so erhaltener magnetkreis
JPH0646745A (ja) * 1992-07-23 1994-02-22 Shimahisa Yakuhin Kk エビの品質保持法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Patent Abstracts of Japan, Band 9, Nr. 173 (E-329)[1896], 18. Juli 1985, & JP, A, 6046745 (YASUKAWA DENKI SEISAKUSHO K.K.) 13. März 1985, siehe die Zusammenfassung *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997019506A1 (fr) * 1995-11-21 1997-05-29 Itt Automotive Electrical Systems, Inc. Stator a enroulement externe avec transition magnetique amrlioree
US6304018B1 (en) 1995-11-21 2001-10-16 Valeo Electrical Systems, Inc. Externally-wound stator with improved magnetic transition
KR100602041B1 (ko) * 2002-08-09 2006-07-19 주식회사 원진 단열방진 경량콘크리트 조성물

Also Published As

Publication number Publication date
DE9010318U1 (de) 1991-11-07
PL290905A1 (en) 1992-03-23

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