Multi-bar linkage electric drive system
First Claim
1. An electric drive system comprising:
- a rotary motor system comprising a hub assembly, a magnetic rotor assembly, a first coil stator assembly, and a second coil stator assembly, wherein the hub assembly defines a rotational axis and wherein each of the magnetic rotor assembly, the first coil stator assembly, and the second coil stator assembly is coaxially aligned with the rotational axis and is capable of rotational movement about the rotational axis; and
a multi-bar linkage mechanism connected to each of the first and second coil stator assemblies and connected to the hub assembly, said multi-bar linkage mechanism constraining movement of the hub assembly so that the rotational axis of the hub assembly moves along a defined path that is in a transverse direction relative to the rotational axis and wherein the multi-bar linkage mechanism causes the rotational axis of the hub assembly to translate along the defined path in response to relative rotation of the first coil stator assembly and the second coil stator assembly with respect to each other,wherein the multi-bar linkage comprises a first swing arm rotatably coupled to the first stator assembly on a first side of the magnetic rotor assembly, a second swing arm rotatably coupled to the second stator assembly on a second side of the magnetic rotor assembly, and a member parallel to the rotational axis and rotatably coupled to the first swing arm and rotatably coupled to the second swing arm.
2 Assignments
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Accused Products
Abstract
An electric drive system including: a rotary motor system including a hub assembly, a first rotating assembly, a second rotating assembly, and a third rotating assembly, wherein the hub assembly defines a rotational axis about which the first rotating assembly, the second rotating assembly, and the third rotating assembly are coaxially aligned and are capable of independent rotational movement independent of each other; a multi-bar linkage mechanism connected to each of the first and third rotating assemblies and connected to the hub assembly and constraining movement of the hub assembly so that the rotational axis of the hub assembly moves along a defined path that is in a transverse direction relative to the rotational axis and wherein the multi-bar linkage mechanism causes the rotational axis of the hub assembly to translate along the defined path in response to relative rotation of the first rotating assembly and the third rotating assembly with respect to each other.
273 Citations
22 Claims
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1. An electric drive system comprising:
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a rotary motor system comprising a hub assembly, a magnetic rotor assembly, a first coil stator assembly, and a second coil stator assembly, wherein the hub assembly defines a rotational axis and wherein each of the magnetic rotor assembly, the first coil stator assembly, and the second coil stator assembly is coaxially aligned with the rotational axis and is capable of rotational movement about the rotational axis; and a multi-bar linkage mechanism connected to each of the first and second coil stator assemblies and connected to the hub assembly, said multi-bar linkage mechanism constraining movement of the hub assembly so that the rotational axis of the hub assembly moves along a defined path that is in a transverse direction relative to the rotational axis and wherein the multi-bar linkage mechanism causes the rotational axis of the hub assembly to translate along the defined path in response to relative rotation of the first coil stator assembly and the second coil stator assembly with respect to each other, wherein the multi-bar linkage comprises a first swing arm rotatably coupled to the first stator assembly on a first side of the magnetic rotor assembly, a second swing arm rotatably coupled to the second stator assembly on a second side of the magnetic rotor assembly, and a member parallel to the rotational axis and rotatably coupled to the first swing arm and rotatably coupled to the second swing arm.
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2. An electric drive system comprising:
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a rotary motor system comprising a hub assembly, a magnetic rotor assembly, a first coil stator assembly, and a second coil stator assembly, wherein the hub assembly defines a rotational axis and wherein each of the magnetic rotor assembly, the first coil stator assembly, and the second coil stator assembly is coaxially aligned with the rotational axis and is capable of rotational movement about the rotational axis; a multi-bar linkage mechanism connected to each of the first and second coil stator assemblies and connected to the hub assembly, said multi-bar linkage mechanism constraining movement of the hub assembly so that the rotational axis of the hub assembly moves along a defined path that is in a transverse direction relative to the rotational axis and wherein the multi-bar linkage mechanism causes the rotational axis of the hub assembly to translate along the defined path in response to relative rotation of the first coil stator assembly and the second coil stator assembly with respect to each other; and a first torque link connecting the first coil stator assembly to the multi-bar linkage mechanism and a second torque link connecting the second coil stator assembly to the multi-bar linkage mechanism, the first and second torque links limiting rotation of the first and second coil stator assemblies to within a range of permitted rotations. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A vehicle comprising:
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a chassis; and a plurality of wheel assemblies at least one of which comprises; a rotary motor system comprising a hub assembly, a magnetic rotor assembly, a first coil stator assembly, and a second coil stator assembly, wherein the hub assembly defines a rotational axis and wherein each of the magnetic rotor assembly, the first coil stator assembly, and the second coil stator assembly is coaxially aligned with the rotational axis and is capable of rotational movement about the rotational axis independent of each other; and a multi-bar linkage mechanism connected to each of the first and second coil stator assemblies and connected to the hub assembly, said multi-bar linkage mechanism constraining movement of the hub assembly so that the rotational axis of the hub assembly moves along a defined path that is in a transverse direction relative to the rotational axis and wherein the multi-bar linkage mechanism causes the rotational axis of the hub assembly to translate along the defined path in response to relative rotation of the first coil stator assembly and second coil stator assembly with respect to each other; a wheel rim circumscribing the rotational axis and wherein the magnetic rotor assembly is coupled to the wheel rim so that the wheel rim rotates about the rotational axis along with the magnetic rotor assembly; and a first torque link connecting the first coil stator assembly to the multi-bar linkage mechanism and a second torque link connecting the second coil stator assembly to the multi-bar linkage mechanism, the first and second torque links limiting rotation of the first and second coil stator assemblies to within a range of permitted rotations. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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Specification