Electronically commutated collectorless direct-current motor
AssigneeStandard Elektrik Lorenz Aktiengesellshaft
InventorsJosef Feigel, Klaus Pfendler
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Abstract
An electrically commutated, collectorless direct-current motor is disclosed whose stator has a self-supporting drum winding and a cylindrical plastic body which is located concentrically with the drum winding in a winding head. The cylindrical plastic body has recesses which contain eyehooks. The ends of the drum winding are connected with the eyehooks, which are welded to a circuit board. The invention makes it possible to automate the connection of the winding ends to the circuit board.
Claims10
Electronically commutated, collectorless direct-current motor having a predetermined number of poles, comprising:
- a rotor having a multipolar body of permanent-magnet material;
- a multipolar stator coil surrounding said rotor, said stator coil having a plurality of electrical ends;
- an internal magnetic yoke surrounded by said multipolar stator coil;
- said stator coil having a plurality of phase windings equal in number to a multiple of said predetermined number of poles;
- a cylindrical body having a rim and a portion which is concentrically disposed within said stator coil;
- a plurality of eyehooks connected to a front portion of said rim of said cylindrical body;
- each of said plurality of electrical ends of said stator coil being respectively secured to said rim by corresponding ones of said plurality of eyehooks, said rim having a plurality of circumferential recesses which are equal to the number of said plurality of phase windings, each of said plurality of circumferential recesses containing a corresponding one of said eyehooks.
An electrically commutated, collectorless direct-current motor comprising:
- a stator having a self-supporting drum winding with a winding head and a cylindrical plastic body, said cylindrical plastic body being mounted concentrically with said drum winding in said winding head and having a plurality of recesses disposed in spaced relationship about said cylindrical plastic body;
- said stator having a plurality of electrical ends;
- a plurality of U-shaped eyehooks, each of said plurality of U-shaped eyehooks being mounted in respective ones of said plurality of recesses, for receiving said electrical ends of said stator;
- and
- a circuit board electrically connected to said drum winding by electrical connection with ones of said plurality of U-shaped eyehooks.
An electronically commutated, collectorless direct-current motor having a predetermined number of poles, comprising:
- a rotor having a multipolar body of permanent magnetic material;
- a stator coil surrounding said rotor, said stator coil being surrounded by a number of phase windings equal to a multiple of said predetermined number of poles of said motor;
- said stator coil having a plurality of electrical ends;
- a cylindrical plastic body having a front end, said front end having a rim which has a plurality of spaced recesses disposed on an end face of said rim of said plastic body, wherein said plurality of recesses equals the number of phase windings;
- and
- a plurality of eyehooks mounted in each of said plurality of recesses, each of said eyehooks receiving corresponding ones of said plurality of electrical ends for electrically connecting said electrical ends to the corresponding ones of said plurality of eyehooks.
Dependencies are inferred from the claim text.