Input Shaft-Supported Gearing Torque Arm Design
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Solution Overview
Problem
Conventional gear sets face challenges in small space and low weight applications due to the need for additional structural support elements, which increase material and spatial requirements, making them too large or heavy for certain specifications.
Innovation Solution
The system uses an input motor shaft as a torque arm to support the gear set through bearing structures, eliminating the need for separate torque arms and allowing for compact designs by transferring the load directly to the input motor, utilizing high-speed bearings and disc bodies with planetary gears and roller chains for efficient speed and torque transformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional gear sets use dedicated structural support elements to support the load and torque forces, then the gear set can bear operational loads, but the material and space requirements increase, making the gear set too large or heavy for small space and low weight applications
Solution Approach 1:
The patent combines the structural support function with the input motor shaft itself, eliminating the need for separate dedicated support elements. The input shaft is designed to directly support the gear set components while serving its primary function of transmitting torque, thereby integrating multiple functions into a single component and reducing overall weight and material requirements.
Solution Approach 2:
The input motor shaft is given multiple functions: it serves as both the torque transmission element and the structural support for the gear set. This multi-functional design eliminates the need for separate support structures, reducing the gear set's overall weight and material consumption while maintaining load bearing capacity.
2Ease of manufacture
If conventional gear sets use dedicated structural support elements, then the gear set can be assembled and supported on the input motor structure, but the additional structural requirements increase the gear set's size and weight
Solution Approach 1:
The patent merges the support function into the input motor shaft, eliminating separate support elements. This integration simplifies the overall structure, reduces the spatial footprint, and maintains assembly capability by utilizing the existing motor shaft as the support structure.
Solution Approach 2:
The patent extracts and eliminates the dedicated structural support elements from the gear set design, relying instead on the input motor shaft to provide support. This removal of unnecessary components reduces the gear set's spatial requirements while maintaining assembly capability.
3Strength
If conventional gear sets are designed with strong and resilient materials using metal and metal alloy gearing structures, then the gear set can withstand operational torque and speed requirements, but certain minimum size and spatial dimension accommodations are required
Solution Approach 1:
The patent combines the torque transmission and structural support functions into the input motor shaft, eliminating the need for additional heavy support structures. This integration allows the gear set to maintain torque resistance while reducing overall volume and material usage.
Solution Approach 2:
The patent changes the design parameters by eliminating dedicated support elements and relying on the input shaft's structural integrity. This parameter change allows for a more compact gear set design that maintains sufficient torque resistance through optimized material usage and structural configuration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables efficient speed transformation with reduced material and space requirements, allowing for use in applications where prior art gear sets are not feasible, and provides cost-effective manufacturing by eliminating the need for encased lubrication systems.
Implementation Method 1
a bearing means disposed about the input motor shaft supports the plurality of gear elements upon the motor shaft
Implementation Method 2
the bearing means thereby transferring an operational load of the gear set to an input motor through the motor shaft
Implementation Method 3
an output element configured to translate a first motor shaft input gear revolution speed into an output element revolution speed slower than the first motor shaft input gear revolution speed
Data Source
AI summary
Gear sets and methods for speed transformation are provided. In one aspect, an input gear is attached to an input motor shaft and a plurality of gear elements comprising an output element cooperatively engage the input gear, wherein a bearing means disposed about the input motor shaft supports the plurality of gear elements upon the motor shaft, the input motor shaft thereby functioning as a torque arm for the plurality of gear elements, the bearing means transferring an operational load comprising a total operative torque load of the gear set to an input motor through the motor shaft. In one aspect the bearing means comprises inner and outer high-speed bearings, and inner and outer disc bodies are disposed about the high-speed bearings and supported by the high-speed bearings. Embodiments include planetary gear and harmonic gear structures, and multistage gear sets.