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公开(公告)号：US20240097585A1
公开(公告)日：2024-03-21
申请号：US18463546
申请日：2023-09-08
Applicant: ZF Automotive UK Limited
Inventor： Russell Wilson-Jones , Mark Anthony Wilkes , Aleksejs Semjonovs
CPC classification number: H02P5/753 , B62D5/006 , B62D5/0409 , H02K7/1166
Abstract: A dual motor drive assembly comprising a housing, a shaft rotatably mounted with respect to the housing, a first gear connected to and configured to rotate with the shaft, first and second motor circuits, each motor circuit including a motor having an output driving a respective output gear, the output gears being engaged with the first gear, a control circuit adapted to allocate independent torque demands to each of the first and second motors to cause a net torque to be applied to the shaft comprising the sum of the torques applied by the two motors, and a processing circuit adapted to estimate the level of load independent mechanical friction of the system by applying torque demands to the two motors.
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公开(公告)号：US20230406400A1
公开(公告)日：2023-12-21
申请号：US18334647
申请日：2023-06-14
Applicant: ZF Automotive UK Limited
Inventor： Russell Wilson-Jones , Mark Anthony Wilkes
CPC classification number: B62D5/001 , B62D5/0421 , B62D3/04
Abstract: A steering column assembly for a vehicle comprises: a steering column rotatably mounted about a longitudinal axis and configured for attachment of a steering wheel at one end; a first gear configured to rotate with the steering column; first and second, each having an output driving a respective output gear, the output gears being engaged with the first gear; and an ECU configured to operate the motors to apply torque to the first gear. The output gears are worm gears and the output gears are offset with respect to one another in the direction of the longitudinal axis of the steering column to produce a partial overlap of the contact areas of the first and second output gears with the teeth of the first gear, which reduces wear of the first gear and prolongs its useful life.
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公开(公告)号：US20250002072A1
公开(公告)日：2025-01-02
申请号：US18755863
申请日：2024-06-27
Applicant: ZF Automotive UK Limited
Inventor： Mark Wilkes , Russell Wilson-Jones
IPC: B62D5/00
Abstract: A steering column assembly for a vehicle includes an elongate steering shaft mounted for rotation about its longitudinal axis and configured for attachment of a steering member at one end. The steering shaft is rotatable in both directions from a position corresponding to a straight ahead position. A cam member has a cam surface. The cam member is constrained to rotate with the steering shaft. A cam follower is in contact with the cam surface. A lever is connected to a lever pivot and arranged to support the cam follower. A spring means is connected to the lever and biases the cam follower into contact with the cam surface via the lever. The spring means urges the cam follower to displace the cam member in a direction which returns the elongate steering shaft towards the straight ahead position.
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公开(公告)号：US20240083492A1
公开(公告)日：2024-03-14
申请号：US18461072
申请日：2023-09-05
Applicant: ZF Automotive UK Limited
Inventor： Russell Wilson-Jones , Mark Anthony Wilkes
CPC classification number: B62D5/0403 , B62D5/0409 , B62D5/046 , B62D15/0235
Abstract: A dual-motor drive assembly, comprising a housing, a shaft rotatably mounted to the housing, a first gear connected to the shaft, first and second motors, each driving a respective output gear which are engaged with the first gear, a motor controller allocating torque demands to the first and second motors to apply a torque to the first gear, a determination unit for an angular position signal of the first and second motors, and a processing unit receiving the angular position signals when the motor controller allocates a torque demand that produces a differential torque at the shaft having a first sense; the differential torque taking up any free-play between the two output gears and the first gear, receiving the angular position signals—when the motor controller allocates a torque demand that produces a differential torque at the shaft having a second sense, the differential torque taking up any free-play between the two output gears and the first gear, and the processing arrangement estimates the level of backlash in the gearbox as a function of the values of the angular position signals at first and second times.
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公开(公告)号：US20240051599A1
公开(公告)日：2024-02-15
申请号：US18362450
申请日：2023-07-31
Applicant: ZF Automotive UK Limited
Inventor： Russell Wilson-Jones , Mark Anthony Wilkes , Aleksejs Semjonovs
CPC classification number: B62D5/0463 , B62D1/20 , B62D6/008
Abstract: A dual motor drive assembly can include a housing, a shaft rotatably mounted with respect to the housing, a first gear connected to and configured to rotate with the shaft, first and second motors, each having an output driving a respective output gear, the output gears being engaged with the first gear. The dual motor drive assembly can also include a control circuit which is adapted to allocate independent torque demands to each of the first and second motors to cause a net torque to be applied to the shaft.
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Patent Agency Ranking
公开(公告)号：US20240051595A1
公开(公告)日：2024-02-15
申请号：US18364832
申请日：2023-08-03
Applicant: ZF Automotive UK Limited
Inventor： Russell Wilson-Jones , Aleksejs Semjonovs , Cristos Prevezianos , David Julian Moule
IPC: B62D5/00
CPC classification number: B62D5/006
Abstract: A dual motor drive assembly comprising a housing, a shaft rotatably mounted to the housing, a first gear rotatably connected to the shaft, first and second motors, each having an output driving a respective output gear, the output gears being engaged with the first gear, a torque allocation arrangement for allocating torque demands to each of the first and second motors, a measurement arrangement for measuring first and second temperature relating to the first and second motors respectively, a torque limit allocation arrangement for allocating a maximum torque limit based on the first and second temperature respectively, wherein a maximum total torque is equal to the sum of maximum torque limits of the first and second motors, wherein in a first mode the allocated torque demand to each of the motors is to provide opposing torques to the shaft, and in a second mode to provide torques in the same direction to the shaft, wherein the torque demand allocations change from the first mode to the second mode at a threshold total torque value, and the threshold total torque value is adjustable based on the maximum total torque.
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公开(公告)号：US20240270302A1
公开(公告)日：2024-08-15
申请号：US18441593
申请日：2024-02-14
Applicant: ZF Automotive UK Limited
Inventor： Russell Wilson-Jones , Mark Anthony Wilkes
Abstract: A steering assembly for a steer-by-wire vehicle comprises a rotatably mounted elongate steering column configured for attachment of a steering member at one end, the steering column being rotatable about its longitudinal axis in either direction from a straight-ahead position. The steering assembly further comprises a damper having a housing defining a volume for receipt of a damping fluid; a stator within the housing and rotatably fixed relative to the housing; and a rotor within the housing, the rotor being coupled with the steering column and rotatable therewith. Each of the stator and rotor comprises a shear surface, the shear surfaces of the stator and the rotor being positioned adjacent one another to generate a resistance to rotation of the rotor when the housing contains damping fluid; and the total surface area of the shear surfaces of the stator and the rotor positioned adjacent one another which generates the resistance to rotation of the rotor varies as the steering column is rotated from the straight-ahead position.
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公开(公告)号：US20240055942A1
公开(公告)日：2024-02-15
申请号：US18363248
申请日：2023-08-01
Applicant: ZF Automotive UK Limited
Inventor： Russell Wilson-Jones , Christos Prevezianos , Ari Akbar Hassan Al-Jaf
Abstract: A dual motor drive assembly comprises a housing, a shaft rotatably mounted with respect to the housing, a first gear connected to and configured to rotate with the shaft, and first and second motors, each having an output driving a respective output gear, the output gears being engaged with the first gear, in which each motor comprises a permanent magnet motor that has the same number of poles and stators such that each motor produces the same pattern of cogging torque over a complete mechanical revolution of the motor.
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公开(公告)号：US11498615B2
公开(公告)日：2022-11-15
申请号：US17069891
申请日：2020-10-14
Applicant: ZF AUTOMOTIVE UK LIMITED
Inventor： Russell Wilson-Jones , Mark Anthony Wilkes
Abstract: A steering torque feedback assembly for a vehicle steering column includes a housing, a first gear rotatably mounted within the housing about a first rotatable axis and being configured to rotate with, or being connected to, a vehicle steering column, first and second electric motors mounted within the housing, each having a rotatable output shaft, second and third gears rotatably mounted within the housing and engaged with the first gear, and first and second reduction gearing connecting the output of the first and second motors and a respective one of the second and third gears.
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公开(公告)号：US20220185359A1
公开(公告)日：2022-06-16
申请号：US17534910
申请日：2021-11-24
Applicant: ZF Automotive UK Limited
Inventor： Russell Wilson-Jones , Timothy Buttery , Mark Anthony Wilkes , Sebastian Granville-Edmunds
Abstract: A steering column assembly is disclosed that comprises: an elongate rotatable steering column, a displacement motor, a torque feedback motor; an engagement mechanism and a control. The steering column is configured at one end for attachment of a steering member and is displaceable along its longitudinal axis between a withdrawn, stowed position in which the steering function of the steering column is inhibited and an extended, deployed position in which the steering function of the steering column can be enabled. The displacement motor displaces the steering column between the stowed and deployed positions. The torque feedback motor is connected to the steering column and by which the steering column is rotatable. The engagement mechanism is engaged when the steering column is in the stowed position and limits the angular displacement of the steering column to a predetermined value. A control is configured to control the operation of the displacement motor and torque feedback motor and to inhibit and enable the steering function of the steering column.
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