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US 12,653,095 B1Granted
Electric motor with integrated self-supporting spindle for a mower
AssigneeParker-Hannifin Corporation
InventorsJason S. Richardson, Kenneth Daryl Edwards
Life of this patent
Estimating the term…
Abstract
An example assembly includes a housing having a motor housing portion and a spindle housing portion, wherein the spindle housing portion comprises a central tube; an electric motor disposed within the motor housing portion of the housing, wherein the electric motor has a rotor; a spindle coupled to the rotor of the electric motor, wherein the spindle is disposed within the central tube of the spindle housing portion; one or more bearings disposed within the central tube and supporting the spindle.
Claims17
An assembly comprising:
- a housing having a motor housing portion and a spindle housing portion, wherein the spindle housing portion comprises a central tube;
- an electric motor disposed within the motor housing portion of the housing, wherein the electric motor has a rotor;
- a spindle coupled to the rotor of the electric motor, wherein the spindle is disposed within the central tube of the spindle housing portion;
- one or more bearings disposed within the central tube and supporting the spindle;
- and
- an inverter board, wherein the inverter board is:
- mounted within the housing, wherein the inverter board comprises a plurality of transistors mounted to a first surface of the inverter board, and a plurality of capacitors mounted to a second surface of the inverter board opposite the first surface, or attached to a housing cover mounted to the housing to form an enclosure in which the electric motor is disposed.
4 more elements
An assembly comprising:
- a housing having a motor housing portion and a spindle housing portion, wherein the spindle housing portion comprises a central tube;
- an electric motor disposed within the motor housing portion of the housing, wherein the electric motor has a rotor disposed inside a stator;
- a spindle coupled to the rotor of the electric motor, wherein the spindle is disposed within the central tube of the spindle housing portion;
- and
- one or more bearings disposed within the central tube and supporting the spindle, wherein the one or more bearings comprise:
- a first bearing mounted at a first end of the spindle within the central tube under the electric motor, and a second bearing mounted at a second end of the spindle within the central tube.
3 more elements
An assembly comprising:
- a housing having a motor housing portion and a spindle housing portion, wherein the spindle housing portion comprises a central tube;
- an electric motor disposed within the motor housing portion of the housing, wherein the electric motor has a rotor, wherein the rotor of the electric motor comprises (i) a rotor lamination stack comprising a plurality of laminations, each lamination comprising a central ring and a plurality of petals emanating radially outward from the central ring, and (ii) a plurality of magnets disposed in a spoke arrangement between respective petals of the plurality of petals;
- a rotor clamping plate interfacing with the rotor lamination stack;
- a plurality of screws coupling the rotor clamping plate to the rotor lamination stack, wherein a screw of the plurality of screws is disposed at a magnetically-neutral position equidistant from two adjacent magnets of the plurality of magnets;
- and
- a spindle coupled to the rotor of the electric motor, wherein the spindle is disposed within the central tube of the spindle housing portion.
3 more elements
A mower comprising:
- a source of electric power;
- a mower deck;
- and
- one or more assemblies mounted to the mower deck and coupled to respective blades, wherein an assembly of the one or more assemblies comprises:
- a housing having a motor housing portion and a spindle housing portion, wherein the spindle housing portion comprises a central tube,
- an electric motor disposed within the motor housing portion of the housing, wherein the electric motor has a stator and a rotor, wherein the source of electric power is configured to provide electric power to wire windings of the stator,
- a spindle coupled to the rotor of the electric motor, wherein the spindle is disposed within the central tube of the spindle housing portion, wherein the spindle is configured to drive a blade of the respective blades,
- one or more bearings disposed within the central tube and supporting the spindle, and
- a breakaway configuration comprising:
- (i) a blade adapter driver configured to rotate with the spindle, wherein the blade adapter driver comprises a plurality of teeth;
- and
- (ii) a blade adapter having a plurality of holes respectively receiving the plurality of teeth of the blade adapter driver, thereby causing the blade adapter driver to rotate the blade adapter, wherein the blade adapter further comprises one or more receptacles configured to receive the blade, such that the one or more receptacles cause the blade to rotate with the blade adapter, and wherein the one or more receptacles are configured to break or bend to allow the spindle to continue rotating as the blade is forced into a sudden stop.
9 more elements
Dependencies are inferred from the claim text.