Motor and transmission
AssigneeLG Innotek Co., Ltd.
InventorsHyun Shik CHO, Hye Yeong Byeon
Life of this patent
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Abstract
A motor comprises: a shaft; a rotor coupled to the shaft and including a magnet; a stator disposed outside the rotor and including a coil and a stator core; a cover disposed on an upper side of the rotor; and a magnetic sensor disposed between the cover and the rotor, wherein the magnetic sensor is disposed on an upper side of the magnet, a surface of the magnetic sensor facing the rotor is disposed below the uppermost end of the coil, and the length of the rotor in the shaft direction is longer than the length of the stator core in the shaft direction.
Claims20
A motor comprising:
- a shaft;
- a rotor coupled to the shaft and including a magnet;
- a stator disposed outside the rotor and including a coil and a stator core;
- a cover disposed on an upper side of the rotor;
- and
- a magnetic sensor disposed between the cover and the rotor,
- wherein the magnetic sensor is disposed above the magnet to sense a magnetic flux of the magnet,
- wherein a surface of the magnetic sensor facing the rotor is disposed below an uppermost end of the coil, and
- wherein an axial length of the rotor is longer than an axial length of the stator core.
A motor comprising:
- a housing;
- a stator is disposed inside the housing and has a coil wound thereon;
- a rotor rotatably disposed inside the stator and including a magnet in electromagnetic interaction with the coil;
- a shaft coupled to a central portion of the rotor and rotating together with the rotor;
- and
- a circuit board having a magnetic sensor arranged to be spaced apart from the stator and the rotor by a predetermined distance in the axial direction in an inner space of the housing and sensing a magnetic force of the magnet on one surface to detect a position of the rotor,
- wherein the axial length of the rotor is longer than the axial length of the stator.
A transmission comprising:
- a gear actuator for shifting the gear through a plurality of motors for providing a driving force;
- a clutch actuator for selectively operating any one of the plurality of clutches;
- and
- a control unit for controlling the power module and the clutch actuator,
- wherein the motor comprises:
- a shaft;
- a rotor coupled to the shaft and including a magnet;
- a stator disposed outside the rotor and including a coil and a stator core;
- a cover disposed on an upper side of the rotor;
- and
- a magnetic sensor disposed between the cover and the rotor,
- wherein the magnetic sensor is disposed above the magnet to sense a magnetic flux of the magnet,
- wherein a surface of the magnetic sensor facing the rotor is disposed below an uppermost end of the coil, and
- wherein an axial length of the rotor is longer than an axial length of the stator core.
Dependencies are inferred from the claim text.