IP Library Granted Patent US 8,035,263
Granted Patent B2
US 8,035,263 · App. 11/718,800 · Granted Oct 11, 2011

Electric motor

Assignee: EBM-PAPST St. Georgen GmbH & Co. KG
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Quick Facts
Patent No.
US 8,035,263
App. No.
11/718,800
Granted
Oct 11, 2011
Kind
B2
Abstract

An electric motor has a rotor ( 52 ) rotatable around a rotation axis ( 56 ) and has a stator ( 60 ) arranged around said rotor ( 52 ), which stator is equipped with poles ( 11′ to 16′ ). Each pole has an individual winding ( 11 to 16 ), and the latter together form a winding arrangement ( 30 ) that serves to generate a rotating field. Arranged approximately concentrically with the rotation axis ( 56 ) is an arrangement having electrical connection elements (U, V, W, U′, V′, W′). The latter are equipped with mounting elements ( 34, V 1, W 1 , U′ 1 , V′ 1, 32, 36 ) to each of which an associated end of an individual winding is mechanically and electrically connected. A connection arrangement ( 40 ) has a plurality of conductors ( 42, 44, 46 ) each of which is connected, by means of a welded connection ( 155 ), to the connection elements of the stator in order to electrically interconnect them in a predetermined fashion.

Claims (39)

1. An electric motor comprising

a rotor ( 52 ) rotatable around a rotation axis ( 56 );

a stator ( 60 ) arranged around said rotor ( 52 ), which stator is equipped with poles ( 11 ′ to 16 ′) on each of which is implemented an individual winding ( 11 to 16 ), which individual windings are wound from wire and together form

a winding arrangement ( 30 ) that serves to generate a rotating field, the wire having at least one connecting wire section between one individual winding and another individual winding, in the manner of a continuous winding arrangement, furthermore comprising

at least one arrangement, arranged approximately concentrically with the rotation axis ( 56 ), having electrical connection elements (U, V, W, U′, V′, W′) that are equipped with mounting elements ( 34 , V 1 , W 1 , U′ 1 , V′ 1 , 32 , 36 )

to each of which connection elements (U,V,W, U′, V′, W′)

two associated individual windings are mechanically and electrically connected,

at least some of the connections being between a mounting element ( 34 , V 1 , W 1 , U′ 1 , V′ 1 ) and a connecting wire section; and

a connection arrangement ( 40 ) including a ring ( 100 , 140 ) of insulating material into which conductors ( 42 , 44 , 46 ) are embedded, and in which conductive elements project outward from the conductors ( 42 , 44 , 46 ), which conductive elements are configured at their free ends ( 102 , 106 , 108 , 110 , 112 , 116 ) for a welded connection to an associated connection element (U, V, W, U′, V′, W′),

a free end of each of which is connected, by means of a welded connection ( 155 ), to connection elements of the stator that are associated with said conductive elements, in order to electrically interconnect said connection elements, associated with said conductors, in a predetermined fashion; and wherein

the outwardly projecting conductive elements are each bent over adjacent their respective free ends, the bent-over part extending substantially parallel to the portion of the associated connection element to which said bent-over part is welded.

2. The electric motor according to claim 1 , wherein the individual windings ( 11 to 16 ) are wound from wire, and the mounting elements of the connection elements are so arranged that a placement of the winding wire ( 30 ) into at least some of said connection elements, during the winding operation of the relevant individual winding, is possible.

3. The electric motor according to claim 2 , wherein

a connection element is provided in a region against a mounting element having a connection surface ( 82 ; 88 ; 98 ) for welded connection to an element of the connection arrangement ( 40 ).

4. The electric motor according to claim 2 , wherein the connection elements are provided on an insulating part ( 40 ), which part is arranged on the stator ( 60 ).

5. The electric motor according to claim 1 , wherein

a connection element is provided in a region against a mounting element having a connection surface ( 82 ; 88 ; 98 ) for welded connection to an element of the connection arrangement ( 40 ).

6. The electric motor according to claim 5 , wherein the connection elements are provided on an insulating part ( 40 ), which part is arranged on the stator ( 60 ).

7. The electric motor according to claim 1 , wherein

the connection elements are provided on an insulating part ( 40 ), which part is arranged on the stator ( 60 ).

8. The electric motor according to claim 7 , wherein parts of coil formers for the individual windings of the stator are provided on the insulating part.

9. The electric motor according to claim 8 , wherein, adjacent a welded connection, at least one of

an associated connection element and

a conductor of the connection arrangement ( 40 ) is equipped with a welding button ( 155 ).

10. The electric motor according to claim 7 , wherein, adjacent a welded connection, at least one of

an associated connection element and

a conductor of the connection arrangement ( 40 ) is equipped with a welding button ( 155 ).

11. The electric motor according to claim 1 , wherein,

adjacent a welded connection, at least one of

an associated connection element and

a conductor of the connection arrangement ( 40 )

is equipped with a welding button ( 155 ).

12. The electric motor according to claim 1 , wherein the conductive elements are each equipped at their respective free end with a welding button ( 155 ), in order to facilitate a resistance-welded connection to

the associated portion of the relevant connection element.

13. The electric motor according to claim 12 , wherein, at the points at which they are embedded into the ring ( 40 ; 140 ), the conductors ( 42 , 44 , 46 ; 142 , 144 , 146 , 148 ) are surrounded in insulating fashion by said ring.

14. The electric motor according to claim 1 , wherein, at the points at which they are embedded into the ring ( 40 ; 140 ), the conductors ( 42 , 44 , 46 ; 142 , 144 , 146 , 148 ) are surrounded in insulating fashion by said ring.

15. The electric motor according to claim 1 , wherein, at the points at which they are embedded into the ring ( 40 ; 140 ), the conductors ( 42 , 44 , 46 ; 142 , 144 , 146 , 148 ) are surrounded in insulating fashion by said ring.

16. The electric motor according

to claim 1 , wherein said connection elements project outward from the conductors ( 42 , 44 , 46 ) and from the ring ( 100 , 140 ).

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 8, 2007
From: KIENZLER, ROLAND; ALTINDIS, ISMAIL; WEISSER, REIMUND; MAIER, JURGEN
To: EBM-PAPST ST. GEORGEN GMBH & CO. KG
Reel/Frame 019262/0068 →
Priority Claims (1)
DE 20 2004 017 721 U · Nov 10, 2004 · national
Continuity (1)
Related Publication 20070296292A1 · Dec 27, 2007