EP0282671A1 - Methode zur Verbindung einer Ankerwicklung an einen Kummutatorsteg - Google Patents

Methode zur Verbindung einer Ankerwicklung an einen Kummutatorsteg Download PDF

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Publication number
EP0282671A1
EP0282671A1 EP87306148A EP87306148A EP0282671A1 EP 0282671 A1 EP0282671 A1 EP 0282671A1 EP 87306148 A EP87306148 A EP 87306148A EP 87306148 A EP87306148 A EP 87306148A EP 0282671 A1 EP0282671 A1 EP 0282671A1
Authority
EP
European Patent Office
Prior art keywords
terminal
winding
winding portion
armature
housing
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.)
Withdrawn
Application number
EP87306148A
Other languages
English (en)
French (fr)
Inventor
Patrick Shui-Chung Wang
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.)
Johnson Electric SA
Original Assignee
Johnson Electric SA
Johnson Electric Industrial Manufactory Ltd
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 Johnson Electric SA, Johnson Electric Industrial Manufactory Ltd filed Critical Johnson Electric SA
Publication of EP0282671A1 publication Critical patent/EP0282671A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K13/00—Lamps having an incandescent body which is substantially non-conductive until heated, e.g. Nernst lamp
    • H01K13/02—Heating arrangements
    • H01K13/04—Heating arrangements using electric discharge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/32—Connections of conductor to commutator segment

Definitions

  • This invention relates to a method of connecting an armature winding to a commutator segment.
  • the terminals described in the aforesaid patent are provided with cutters to sever the insulation on the wire as the wire is moved into the slot.
  • the present invention seeks to provide a method of connecting an armature to a commutator segment without the need to provide the terminals with cutters.
  • a method of connecting an armature winding to a commutator segment comprising the steps of:-
  • the armature comprises a housing for said terminal.
  • said winding portion may be located in said housing prior to step (b) and in performing step (b) the terminal is inserted into said housing such that the slot straddles and grips said bared part of said winding portion.
  • step (a) is performed after the winding portion is located in said housing.
  • the armature has a plurality of housings and insulation is removed from winding portions in each of said housings simultaneously.
  • the invention also resides in an armature made according to the aforesaid method.
  • Figures 1 to 4 illustrate one embodiment of the invention in which the commutator has five segments. Five connections to the armature winding are required.
  • Figure 1 shows a moulded plastics body 10.
  • the body 10 has three sections, 12, 14 and 16, and is essentially a hollow cylinder with additional structures provided on its external surface, in its middle section 14.
  • the shaft of an armature passes through the body 10 and the portion 16 is a spacer which spaces the middle section 14 of the body 10 from the base of the armature stacks (not shown).
  • the middle portion 14 of the body 10 has five housings 18 equally spaced around the circumference of the body 10. Each of the housings 18 is used in effecting connection between a respective portion of the armature winding and one of the commutator segments.
  • Section 12 of the body 10 provides support for the commutator segments.
  • the housing 18 has side walls 20, an end wall 22 and a cover 24.
  • the end wall 22 is adjacent the spacer 16 and an opening 26 which faces the commutator support 12 is provided by the walls 20, 22 and cover 24.
  • the side walls are parallel with the longitudinal axis of the body 10.
  • a boss 28 projects centrally from the internal surface of the end wall 22 and extends within the housing 18 for approximately half the length of the side walls 20.
  • the boss 28 extends parallel with the longitudinal axis of the body 10 and is only connected to the body 10 by the end wall 22.
  • Each side wall 20 of the housing 18 has a slot 30 which extends parallel to the longitudinal axis of the body 10, from the commutator end of the housing 18 for a length which terminates at the level of the free end of the boss 28.
  • a portion 32 of the armature winding is passed through the slots 30 of one of the housings 18 and the winding portion 32 rests on the end of the boss 28.
  • the external surfaces of the side walls 20 are bevelled so as to facilitate entry of the winding portion 32 into the slots 30.
  • the combined commutator segment 34 and terminal 36 are illustrated in Figures 2 and 3.
  • Figure 2 shows the combination in the form of a blank and Figure 3 is an end elevation of the combination when formed into its operational configuration.
  • the commutator segment 34 has a base 38 which carries a copper overlay 40.
  • the base 38 can be of spring quality brass or steel providing the terminal with some degree of give should it be necessary to make the body 10 of a thermosetting plastics.
  • a lug 42 of reduced width is provided at the front end of the base 38 and the lug 42 has a central struck-up tag 44.
  • the base 38 of the commutator segment 34 is connected to the terminal 36.
  • the terminal 36 is rectangular with its minor axis coincident with the longitudinal axis of the commutator segment 34.
  • the terminal 36 has a central cut out portion 46 which is symmetrical with respect to both the major and minor axis of the terminal 36.
  • the cut out 46 reduces from its largest width at the centre of the terminal to two key hole shaped portions 48 which terminate either end of the cut out 46.
  • a triangular barb 50 is provided on either side of the minor axis of the terminal 36 along the edge furthest from the commutator segment 34.
  • the base 38 and the overlay 40 of the commutator segment 34 are of arcuate form which conforms to the external radius of the commutator support section 12 of the body 10.
  • the lug 42 extends below the base 38 and back along the length of the commutator section 34 with the tag 44 projecting below the lug 42.
  • Terminal 36 is bent upright from the commutator segment 34 and the arms 52 of the terminal 36, which include the respective key hole formations 48, are bent at 90 degrees to the central portion 54 of the terminal.
  • the arms 52 therefore extend parallel to each other and to the longitudinal axis of the commutator segment 44, and forward along the length thereof.
  • the free ends 56 of the terminal 36 are bent so as to be inclined towards each other when the arms 52 have been bent parallel to each other.
  • the front end of the body 10 is provided with five longitudinal recesses 70 which are cut away at the forward ends so as to meet the curved external surface of the commutator supporting section 12.
  • the armature is assembled in the following manner.
  • the body 10 is placed on the armature shaft with the spacer 16 against the base of the lamination stack.
  • the lead wire of the armature winding is inserted into the housing 18 by laying the end of the wire 32 in the slots 30 provided in the side wall 20 of the housing 18.
  • the wire 32 is drawn back into the housing 18 until it rests against the boss 28. From this start, the first armature coil is wound. At the end of the first coil winding the armature is indexed and the wire 32 is layed in the same manner in the next housing 18 without breaking the continuity of the wire 32.
  • the body 10 now has a winding portion 32 comprising insulated wire (e.g. enamel coated wire) laying in each of the housings 18.
  • insulated wire e.g. enamel coated wire
  • Each of the winding portions 32 is under tension and is pulled tight against the respective boss 28.
  • a tool then removes insulation from the winding portions at least in the regions where the arms 52 of the terminals 36 are to make contact with the winding portions.
  • the tool removes the insulation from all winding portions simultaneously. Whilst it is envisaged that the tool will remove the insulation by severing and displacing the insulation other methods of removing the insulation may be considered and are included within the scope of the invention.
  • the commutator segments 34 are then placed on the supporting section 12 of body 10 and are slid along the sections 12 so that the terminals 36 enter respective housings 18 and the lugs 42 enter the respective recesses 70.
  • the slots provided by cut outs 48 move over bared parts of the wire 32 whilst the central portion 54 of the terminal 36 passes over the boss 28.
  • the slots are narrower than the wire diameter and intimate metal to metal contact is therefore provided between the wire 32 and the terminal 36.
  • the barbs 50 grip the cover 24 of the housing and therefore retain the terminal in the housing. Additional retention may be provided by contact between the central portion 54 of the terminal and the boss 28.
  • the arms 52 of the terminal 36 act as double canterlever springs and exert a continuous pressure on the wire 32.
  • lug 42 of commutator segment 34 enters the recess 70 and tag 44 is forced into the material of the body 10 so as to rigidly restrain the lug 42 within the recess 70.
  • the commutator segment is thus held rigidly against section 12 of the body 10.
  • the commutator could be a face plate commutator similar to that described in our co-pending British Patent Application No.8629625.
  • the insulation could be removed from the winding portion just prior to laying the latter in a housing.
  • the open end of the slot could face away from the armature stack so that the winding portion could be drawn into the slot during winding of armature, although in this case the winding operation will need to be suspended each time it is necessary to remove insulation.
  • the invention is particularly but not exclusively applicable to armature windings of fractional horsepower electric motors.

Landscapes

  • Motor Or Generator Current Collectors (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Dc Machiner (AREA)
EP87306148A 1987-03-16 1987-07-10 Methode zur Verbindung einer Ankerwicklung an einen Kummutatorsteg Withdrawn EP0282671A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8706166 1987-03-16
GB08706166A GB2202998A (en) 1987-03-16 1987-03-16 A method of connecting an armature winding to a commutator

Publications (1)

Publication Number Publication Date
EP0282671A1 true EP0282671A1 (de) 1988-09-21

Family

ID=10614016

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87306148A Withdrawn EP0282671A1 (de) 1987-03-16 1987-07-10 Methode zur Verbindung einer Ankerwicklung an einen Kummutatorsteg

Country Status (6)

Country Link
EP (1) EP0282671A1 (de)
JP (1) JPS63228943A (de)
CN (1) CN1030853A (de)
AU (1) AU7764287A (de)
DE (1) DE282671T1 (de)
GB (1) GB2202998A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2280066B (en) * 1991-03-01 1995-06-21 Mabuchi Motor Co Securement of commutator segment to the commutator body of a miniature motor
US5272404A (en) * 1991-03-01 1993-12-21 Mabuchi Motor, Co., Ltd. Miniature motor having a built-up commutator
JPH083178Y2 (ja) * 1991-03-26 1996-01-29 マブチモーター株式会社 小型モータ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914632A (en) * 1973-04-06 1975-10-21 Electrolux Ab Commutator for electric machines and method of making such a commutator
EP0106444A1 (de) * 1982-10-11 1984-04-25 Johnson Electric Industrial Manufactory Limited Abschluss für elektrische Läuferwicklung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1459029A (en) * 1973-05-30 1976-12-22 Amp Inc Electrical terminal assembly
US4281886A (en) * 1979-08-16 1981-08-04 Polaroid Corporation Electric wire terminal connecting structure
CA1115796A (en) * 1980-07-03 1982-01-05 Northern Telecom Limited Retainer member with dual action cantilever beams
FR2490029A1 (fr) * 1980-09-11 1982-03-12 Wago Verwaltungs Gmbh Borne de jonction ou de connexion pour conducteurs electriques
CA1211175A (en) * 1983-04-18 1986-09-09 Charles E. Reynolds Wire-slot type electrical terminal intended for mating with a terminal tab

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914632A (en) * 1973-04-06 1975-10-21 Electrolux Ab Commutator for electric machines and method of making such a commutator
EP0106444A1 (de) * 1982-10-11 1984-04-25 Johnson Electric Industrial Manufactory Limited Abschluss für elektrische Läuferwicklung

Also Published As

Publication number Publication date
AU7764287A (en) 1988-09-15
GB2202998A (en) 1988-10-05
DE282671T1 (de) 1989-01-05
JPS63228943A (ja) 1988-09-22
CN1030853A (zh) 1989-02-01
GB8706166D0 (en) 1987-04-23

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Designated state(s): DE FR GB IT

EL Fr: translation of claims filed
17P Request for examination filed

Effective date: 19881017

DET De: translation of patent claims
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: JOHNSON ELECTRIC S.A.

17Q First examination report despatched

Effective date: 19910709

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19910720

R18D Application deemed to be withdrawn (corrected)

Effective date: 19911120

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WANG, PATRICK SHUI-CHUNG