Commutator motor, method for producing a commutator motor, and windscreen-wiper motor

Patent metadata

Field	Value
Publication number	US-10374501-B2
Application number	US-201515529563-A
Country	US
Kind code	B2
Filing date	Dec 9, 2015
Priority date	Dec 9, 2014
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

Abstract

The invention relates to a commutator motor ( 10 ), particularly as part of a windscreen-wiper motor ( 100 ), having at least four magnet elements ( 11 to 14 ) which are arranged on a reference-circle diameter around an axis of rotation of an armature shaft ( 2 ) with polarity that alternates in the circumferential direction, and having an armature ( 15 ) with armature slots (N 1 to N 18 ) and armature teeth (Z 1 to Z 18 ), wherein winding wires ( 20 ) having a multiplicity of windings ( 27, 28 ) in each case for constructing coils (C 1 to C 9 ) are arranged in the armature slots (N 1 to N 18 ), wherein a start ( 21 ) and an end ( 22 ) of a winding wire ( 20 ) is electrically conductively connected to a commutator hook (H 1 to H 18 ) in each case, wherein a winding wire ( 20 ) has two winding-wire sections ( 25, 26 ), which are arranged in the region of different magnet elements ( 11 to 14 ) in such a manner that a first winding-wire section ( 25 ) with a first number of windings ( 27 ) in a first winding direction is assigned to a first magnet element ( 11 to 14 ) and is located in two armature slots (N 1 to N 18 ), and that a second winding-wire section ( 26 ) with a second number of windings ( 28 ) in a second winding direction, opposite to the first winding direction, is assigned to a second magnet element ( 11 to 14 ) and is located in two armature slots (N 1 to N 18 ), and wherein the two magnet elements ( 11 to 14 ) have different polarities.

First claim

The invention claimed is:

1. A commutator motor that is part of a windscreen-wiper motor, the commutator motor comprising:
at least four magnet elements which are arranged on a reference-circle diameter around an axis of rotation of an armature shaft with polarity that alternates in the circumferential direction; and
an armature with armature slots and armature teeth,
wherein winding wires having a multiplicity of windings in each case for constructing coils are arranged in the armature slots,
wherein a start and an end of a winding wire is electrically conductively connected to a commutator hook in each case,
wherein a winding wire has two winding wire sections, which are arranged in the region of different magnet elements s that a first winding wire section with a first number of windings in a first winding direction is assigned to a first magnet element and is located in a first set of two armature slots, and that a second winding wire section with a second number of windings in a second winding direction, opposite to the first winding direction, is assigned to a second magnet element and is located in a second set of two armature slots,
wherein the first and second magnet elements have different polarities, and
wherein the windings of the two winding wire sections intersect so that the windings of the first winding-wire section are located in an armature slot, which is located between the second set of two armature slots of the windings of the second winding-wire section.

2. The commutator motor according to claim 1 , wherein the armature slot of the first winding-wire section is located directly beside an armature slot of the second winding-wire section.

3. The commutator motor according to claim 2 , wherein between the armature slot of the first winding-wire section and the armature slot of the second winding-wire section at least one additional armature slot is arranged.

4. The commutator motor according to claim 1 , wherein the number of the armature slots of the two winding-wire sections is different.

5. The commutator motor according to claim 4 , wherein the armature has eighteen armature teeth, and the first winding-wire section is arranged in the first set of two armature slots, which are separated from one another by three armature slots, as viewed in the circumferential direction of the armature, and wherein the second winding-wire section is arranged in the second set of two armature slots, which are separated from one another by four armature slots, as viewed in the circumferential direction of the armature.

6. The commutator motor according to claim 1 , wherein the number of windings of the two winding-wire sections is at least substantially the same.

7. A method for producing a commutator motor according to claim 1 , comprising:
arranging a winding-wire section of a winding wire in a first winding direction in the first set of two armature slots of an armature in a first winding step; and
subsequently, arranging another winding-wire section of the winding wire in a reverse direction compared to the first winding direction in the second set of two armature slots of the armature in a second winding step,
wherein the windings of the two winding-wire sections intersect as viewed in the circumferential direction of the first and second sets of armature slots in such a manner that after carrying out the first winding step the winding wire is introduced into a third armature slot to carry out the second winding step, wherein the armature slot is arranged between the first set of two armature slots of the first winding-wire section.

8. The method according to claim 7 , wherein between the one armature slot of the first set of armature slots of the one winding-wire section and the one armature slot of the second set of armature slots of the other winding-wire section at least one further armature slot is arranged, wherein the number of the armature slots of the two winding-wire sections is different, and wherein in the first winding step, the winding-wire section is formed with a smaller number of separating armature slots.

9. A windscreen-wiper motor comprising a commutator motor according to claim 1 .

Assignees

• Valeo Systemes Dessuyage

Inventors

• Schoendeling Matthias
• Stubbe Markus

Classifications

• H02K23/30 Primary

  having lap or loop windings · CPC title

• H02K3/28

  Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32) · CPC title

• H02K23/26 Primary

  characterised by the armature windings · CPC title

• H02K15/085

  by laying conductors into slotted stators · CPC title

• H02K23/40

  characterised by the arrangement of the magnet circuits · CPC title