Steer drive wheel mechanism
AssigneeRINUC Inc.
InventorWhang Cho
Life of this patent
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Abstract
The disclosed invention introduces a steer-drive wheel mechanism, suitable for applications like mobile platforms, featuring two motors mounted on the platform. This design enables an unrestricted steering angle for the wheel without encountering challenges in delivering power and control signals to the motors. The two motors collaborate through two coaxially arranged axes in driving and steering the wheel, ensuring optimal power utilization and minimizing unnecessary mechanical stresses. Continuous cooperation of the two motors in driving and steering the wheel can be achieved using a ‘motion synthesizer.’ This device accepts two rotational motions from the motors and, depending on the required operation of the wheel mechanism, produces appropriate rotational motions for driving and steering the wheel.
Claims16
A steer drive wheel mechanism for a mobile platform, where driving and steering of the wheel are controlled by two motors comprising:
- a fixed frame that remains stationary relative to the mobile platform;
- wheel bracket that is rotatably mounted on the fixed frame such that it can be steered about steer axis relative to the fixed frame;
- at least one wheel that is rotatably mounted on the wheel bracket through a wheel axis;
- a first motor and a second motor rigidly installed on the fixed frame to collaborate in driving and steering the wheel;
- an inner input shaft and an outer input shaft configured coaxially along steer axis to transmit two rotational motions generated by the first and the second motors, respectively;
- a motion synthesizer that accepts two rotational motions from the inner and the outer input shaft and produces rolling or driving motion of the wheel relative the wheel bracket and steering motion of the wheel bracket relative to the fixed frame;
- a vertical output shaft extended from inner input shaft and at least one horizontal output shaft;
- and
- a gear unit disposed within the motion synthesizer, the gear unit coupled to the inner input shaft, the outer input shaft, the horizontal output shaft.
A steer drive wheel mechanism for a mobile platform, where driving and steering of the wheel are controlled by two motors comprising:
- a fixed frame that remains stationary relative to the mobile platform;
- wheel bracket that is rotatably mounted on the fixed frame such that it can be steered about steer axis relative to the fixed frame;
- at least one wheel that is rotatably mounted on the wheel bracket through a horizontal wheel axis;
- a first motor and a second motor rigidly installed on the fixed frame to collaborate in driving and steering the wheel;
- an inner input shaft and an outer input shaft configured coaxially along steer axis to transmit two rotational motions generated by the first and the second motors, respectively;
- a motion synthesizer that accepts two rotational motions from the inner and the outer input shaft and produces two rotational motions of a first and a second vertical shafts;
- and
- a gear unit disposed within the motion synthesizer, the gear unit coupled to the inner input shaft, the outer input shaft, the first and the second vertical shafts.
Dependencies are inferred from the claim text.