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US 9,960,560 B2Granted
Contact-commutated electric motor
AssigneeMahle International GmbH
InventorsMarcel Froebel, Martin Helmis, Bernd Mack, Peter Wieske
Life of this patent
Estimating the term…
Abstract
An electric motor with contact commutation may include an external stator and an internal, rotatably mounted rotor. A magnet arrangement including at least one permanent magnet may be arranged fixedly on the rotor. A coil arrangement including at least one electric coil may be arranged fixedly on the stator. A contact commutation assembly may be in communication with the coil arrangement.
Claims30
An electric motor with contact commutation, comprising:
- an external stator and an internal, rotatably mounted rotor;
- a magnet arrangement including at least one permanent magnet arranged fixedly on the rotor;
- a coil arrangement including at least one electric coil arranged fixedly on the stator;
- a contact commutation assembly in communication with the coil arrangement, the contact commutation assembly including a contact element arrangement that is driven rotatably by the rotor and includes at least one contact element, and a slip ring arrangement that is arranged rotationally fixed relative to the stator and electrically connected to the coil arrangement;
- wherein the slip ring arrangement includes a plurality of slip rings, and at least two slip rings of the plurality of slip rings define a slip ring group and are electrically connected to one another via the at least one contact element;
- and
- wherein the slip ring group has two slip rings that define a slip ring pair;
- the slip ring pair includes a first slip ring and a second slip ring;
- the first slip ring being electrically connected to at least one of the coil arrangement and a coil strand associated with the coil arrangement;
- the second slip ring being segmented in a circumferential direction and including (i) at least one plus-pole segment, the at least one plus-pole segment electrically connected to a plus-pole terminal, the plus-pole terminal being connected to a plus pole of a power supply;
- (ii) at least one minus pole segment electrically connected to a minus-pole terminal, the minus-pole terminal connected to a minus pole of the power supply;
- and (iii) at least two insulator segments, the at least two insulator segments being arranged in each case between the at least one plus-pole segment and the at least one minus-pole segment in the circumferential direction.
9 more elements
An electric motor with contact commutation, comprising:
- an external stator and an internal, rotatably mounted rotor;
- a magnet arrangement including at least one permanent magnet arranged fixedly on the rotor;
- a coil arrangement including at least one electric coil arranged fixedly on the stator;
- a contact commutation assembly in communication with the coil arrangement, the contact commutation assembly including a contact element arrangement and a slip ring arrangement;
- the contact element arrangement driven rotatably by the rotor and including at least one contact element;
- the slip ring arrangement arranged rotationally fixed relative to the stator and electrically connected to the coil arrangement, wherein the slip ring arrangement includes at least one slip ring;
- and
- wherein the contact element arrangement is arranged fixedly on a contact element shaft, the contact element shaft being drive-connected via a gearbox to the rotor.
5 more elements
An electric motor with contact commutation, comprising:
- an external stator and an internal, rotatably mounted rotor;
- a magnet arrangement including at least one permanent magnet arranged fixedly on the rotor;
- a coil arrangement including at least one electric coil arranged fixedly on the stator;
- a contact commutation assembly in communication with the coil arrangement, the contact commutation assembly including a contact element arrangement and a slip ring arrangement;
- the contact element arrangement driven rotatably by the rotor and including at least one contact element;
- the slip ring arrangement arranged rotationally fixed relative to the stator and electrically connected to the coil arrangement;
- wherein the slip ring arrangement has a single slip ring segmented in a circumferential direction, the single slip ring including:
- at least one plus-pole segment electrically connected to a plus-pole terminal, the plus-pole terminal connected to a plus pole of a power supply;
- at least one minus-pole segment electrically connected to a minus-pole terminal, the minus-pole terminal connected to a minus pole of the power supply;
- at least one coil segment electrically connected to the coil arrangement;
- and
- at least one electrically insulating insulator segment;
- wherein the at least one plus-pole segment, the at least one minus-pole segment, the at least one coil segment and the at least one insulator segment follow one another in the circumferential direction such that the at least one coil segment is arranged between the at least one plus-pole segment and the at least one minus-pole segment, and the at least one insulator segment is arranged between the at least one plus-pole segment and the at least one minus-pole segment.
10 more elements
Dependencies are inferred from the claim text.