Back to results
US 2003/0111919 A1Published application
Electric motor
AssigneeJohnson Electric S.A.
InventorJames Ching Sik Lau
Life of this patent
Estimating the term…
Abstract
A PMDC motor 10 with a speed sensor 20 has a cup-like deep drawn rear housing 18 and an end cap 16. The speed sensor 20 is located on an inner surface of the end cap 16 and has a coil connected to two terminals of a connector 23 mounted on a brush plate 21 of the end cap 16. The connector 23 is aligned with a window 26 in the rear housing 18.
Claims9
A PMDC motor comprising:
- a shaft;
- a rotor core mounted on the shaft;
- a commutator mounted on the shaft adjacent the rotor core;
- windings wound about the rotor core and terminated on the commutator;
- a permanent magnet stator having at least one magnet confronting the rotor core;
- a housing supporting the stator;
- an end cap fixed to the housing and supporting:
- motor terminals;
- brush gear in sliding contact with the commutator for transferring electrical power from the motor terminals to the windings;
- and
- a speed sensor,
- wherein
- the speed sensor comprises a sensor coil and sensor terminals fixed to the end cap for connecting the sensor coil to external lead wires.
10 more elements
Dependencies are inferred from the claim text.