DRIVE ASSEMBLY FOR ELECTRIC DEVICE

• US 20130181582A1
• Filed: 10/12/2012
• Published: 07/18/2013
• Est. Priority Date: 10/12/2011
• Status: Abandoned Application

• Current Assignee: Gogoro Inc.
• Original Assignee: Gogoro Inc.
• Inventors: LUKE, Hok-Sum Horace, TAYLOR, Matthew Whiting, HUNG, Huang-Cheng
• Application Number:
  US13/650,392
• Publication Number:
  US 20130181582A1
• Time in Patent Office: Days
• US Class Current: 310/75.R
• CPC Class Codes: H02K 16/04 Machines with one rotor and two stators
• CPC Class Codes: H02K 21/22 with magnets rotating around the armatures, e.g. flywheel magnetos
• CPC Class Codes: H02K 7/10 Structural association with clutches, brakes, gears, pulleys or mechanical starters

Abstract

Drive assemblies for electric devices, such as vehicles, include an electric motor that includes a rotor assembly and a stator assembly positioned within the rotor assembly. The stator assembly is fixed to a stationary axle and includes a pole and a coil around the pole. The rotor assembly is supported on the fixed stationary axle by bearings. The rotor assembly includes a housing to which a plurality of magnets are attached. A drive mechanism, such as a sprocket, pulley or gear is provided on the housing of the rotor assembly and rotates with the housing.

Claims

1. A drive assembly for an electric device, the drive assembly comprising:

a static axle;

a stator assembly fixed to the static axle, the stator assembly having a pole and a coil around the pole; and

a rotor assembly having a housing and a plurality of magnets coupled to the housing;

wherein the stator assembly is positioned within the rotor assembly, and

the housing includes a drive mechanism.

2. The drive assembly of claim 1, wherein the rotor assembly is supported on the static axle for rotation about the static axle.

3. The drive assembly of claim 2, further comprising a bearing supporting the rotor assembly on the static axle.

4. The drive assembly of claim 2, wherein the bearing includes an inner race coupled to the static axle and an outer race coupled to the rotor assembly.

5. The drive assembly of claim 1, the rotor assembly further comprising a first end and a second end opposite the first end, wherein the drive mechanism is coupled to the housing between the first end and the second end.

6. The drive assembly of claim 1, the static axle including a first end configured to be coupled to the device and a second end opposite the first end configured to be coupled to the device.

7. The drive assembly of claim 1, wherein the drive mechanism is fixedly attached to the housing.

8. The drive assembly of claim 1, wherein the drive mechanism is a sprocket, a pulley, or a gear.

18. The drive assembly of claim 1 wherein the housing of the rotor assembly includes a rotor housing neck and the drive mechanism is positioned on the rotor housing neck.

9. An electrically powered device driven by a drive assembly comprising:

a static axle;

a stator assembly fixed to the static axle, the stator assembly having a pole and a coil around the pole; and

a rotor assembly having a housing and a plurality of magnets coupled to the housing;

wherein the stator assembly is positioned within the rotor assembly, and the housing includes a drive mechanism.

10. The electrically powered device of claim 9, wherein the rotor assembly is supported on the static axle for rotation about the static axle.

11. The electrically powered device of claim 10, further comprising a bearing supporting the rotor assembly on the static axle.

12. The electrically powered device of claim 11, wherein the bearing includes an inner race coupled to the static axle and an outer race coupled to the rotor assembly.

13. The electrically powered device of claim 9, the rotor assembly further comprising a first end and a second end opposite the first end, wherein the drive assembly is coupled to the housing between the first end and the second end.

14. The electrically powered device of claim 9, the static axle comprising a first end configured to be coupled to the vehicle and a second end opposite the first end, the second end configured to be coupled to the vehicle.

15. The electrically powered device of claim 9, wherein the drive assembly is fixedly attached to the housing.

16. The electrically powered device of claim 9, wherein the drive assembly is a sprocket, a pulley, or a gear.

17. The electrically powered device of claim 9, wherein the electrically powered device is an electric vehicle.

19. The electrically powered device of claim 9, wherein the housing of the rotor assembly includes a rotor housing neck and the drive mechanism is positioned on the rotor housing neck.