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US 12,570,347 B2Granted
Hub motor with integrated brake
AssigneeRehrig Pacific Company
InventorsDane Gin Mun Kalinowski, Travis James Englert
Life of this patent
Estimating the term…
Abstract
A hub motor includes a hub motor body, an axle extending into the hub motor body, a rotor coupled to the outer housing, a stator within the rotor and coupled to the axle, and a brake within the hub motor body. The brake may include a brake pad spring-biased into braking engagement and moved out of braking engagement by an electromagnetic coil, such that the brake will fail into a braked state.
Claims38
A hub motor comprising:
- a hub motor body;
- a rotor connected to a sun gear of a planetary gearset, wherein the sun gear is coupled to a ring gear by a plurality of planet gears, and the ring gear is coupled to the hub motor body such that the rotor and the hub motor body are rotatable about an axis;
- a stator within the rotor and the hub motor body, wherein the rotor and the hub motor body are rotatable relative to the stator;
- and
- a brake within the hub motor body, the brake including a friction disk coupled to the sun gear.
2 more elements
A hub motor comprising:
- a hub motor body;
- a rotor coupled to the hub motor body such that the rotor and the hub motor body are rotatable about an axis;
- a stator within the rotor and the hub motor body, wherein the rotor and the hub motor body are rotatable relative to the stator;
- a brake within the hub motor body, wherein the brake includes at least one brake shoe, wherein the at least one brake shoe is within the hub motor body;
- at least one spring biasing the at least one brake shoe toward braking engagement to inhibit rotation of the hub motor body relative to the stator;
- and
- an actuator configured to move the at least one brake shoe away from braking engagement when activated, wherein the actuator is within the hub motor body.
4 more elements
A hub motor comprising:
- a hub motor body;
- an axle extending into the hub motor body;
- a rotor coupled to the hub motor body;
- a stator within the rotor and coupled to the axle;
- and
- a brake within the hub motor body, wherein the brake includes at least one pawl selectively engaging teeth to inhibit rotation of the hub motor body relative to the axle.
3 more elements
A pallet sled comprising:
- a base;
- a pair of tines extending forward of the base;
- and
- a wheel supporting the pallet sled below each of the pair of tines, wherein each wheel includes a hub motor therein, the hub motor including a hub motor body, a rotor, and a stator, wherein the rotor is coupled to rotate with the hub motor body relative to the stator, wherein the stator is within the rotor, the rotor connected to a sun gear of a planetary gearset, wherein the sun gear is coupled to a ring gear by a plurality of planet gears, and the ring gear is coupled to the hub motor body such that the rotor and the hub motor body are rotatable about an axis, wherein the hub motor further includes a brake within the hub motor body for selectively inhibiting relative rotation between the hub motor body and the stator.
1 more element
A pallet sled comprising:
- a base;
- at least one tine extending forward of the base;
- a wheel supporting the pallet sled, wherein the wheel includes a hub motor therein, the hub motor including a hub motor body, a rotor and a stator, wherein the rotor is coupled to the hub motor body, wherein the stator is within the rotor and the hub motor body, wherein the hub motor further includes a planetary gearset coupling the rotor to the hub motor body, wherein the planetary gearset includes a sun gear coupled to the rotor and a ring gear fixed to the hub motor body, the planetary gearset further including planet gears engaging the ring gear and the sun gear;
- and
- a brake assembly configured to brake the hub motor body.
2 more elements
A pallet sled comprising:
- a base;
- at least one tine extending forward of the base;
- a wheel supporting the pallet sled, wherein the wheel includes a hub motor therein, the hub motor including a hub motor body, an axle extending into the hub motor body, a rotor coupled to the hub motor body, a stator within the rotor and coupled to the axle;
- and
- a brake assembly configured to brake the hub motor body, wherein the brake assembly includes a pawl.
2 more elements
A hub motor comprising:
- a hub motor body, a tread on an outer surface of the hub motor body;
- a rotor connected to a sun gear of a planetary gearset, wherein the sun gear is coupled to a ring gear by a plurality of planet gears, and the ring gear is coupled to the hub motor body such that the rotor and the hub motor body are rotatable about an axis;
- a stator within the rotor, within the hub motor body and within the tread, wherein the rotor and the hub motor body are rotatable relative to the stator;
- and
- a brake positioned within the hub motor body and within the tread and configured to prevent or inhibit relative rotation between the hub motor body and the stator.
2 more elements
Dependencies are inferred from the claim text.