Rotor assembly having ball nut cartridge
AssigneeBose Corporation
InventorsDaniel Charles Haferman, Andrew Joseph LaFosse, Christopher Alan Pare
Life of this patent
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Abstract
In one arrangement, a motor assembly includes a housing defining a housing chamber, a stator disposed within the housing chamber, and a rotor assembly disposed within the housing chamber. The rotor assembly includes a spindle housing defining a spindle housing chamber extending along a longitudinal axis of the spindle housing and a set of magnets disposed about an outer periphery of the spindle housing and in proximity to the stator. The rotor assembly includes a ball nut cartridge disposed within the spindle housing chamber of the spindle housing and a securing mechanism configured to secure the ball nut cartridge to the spindle housing.
Claims21
An actuator assembly, comprising:
- at least one motor assembly;
- and
- an output shaft moveably coupled to the at least one motor, the at least one motor assembly comprising:
- a motor housing defining a housing chamber,
- a stator disposed within the motor housing chamber,
- a rotor assembly disposed within the motor housing chamber, the rotor assembly comprising:
- a spindle housing defining a spindle housing chamber extending along a longitudinal axis of the spindle housing;
- a set of magnets disposed about an outer periphery of the spindle housing and in proximity to the stator;
- a ball nut cartridge disposed within the spindle housing chamber of the spindle housing;
- and
- a securing mechanism configured to secure the ball nut cartridge to the spindle housing;
- wherein the spindle housing comprises a stop portion disposed about an inner periphery of the spindle housing within the spindle housing chamber, the ball nut cartridge captured between the securing mechanism and the stop portion;
- and
- a set of pins disposed between the stop portion and the ball nut cartridge, the set of pins configured to rotationally secure the ball nut cartridge relative to the stop portion of the spindle housing.
A motor assembly, comprising:
- a housing defining a housing chamber;
- a stator disposed within the housing chamber;
- a rotor assembly disposed within the housing chamber, the rotor assembly comprising:
- a spindle housing defining a spindle housing chamber extending along a longitudinal axis of the spindle housing;
- a set of magnets disposed about an outer periphery of the spindle housing and in proximity to the stator;
- a ball nut cartridge disposed within the spindle housing chamber of the spindle housing;
- and
- a securing mechanism configured to secure the ball nut cartridge to the spindle housing;
- and
- an isolation hushing disposed between an outer periphery of the ball nut cartridge and an inner periphery of the spindle housing chamber.
Dependencies are inferred from the claim text.