Asymmetrical Geared Motor Housing for Compact Bidirectional Mounting
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Solution Overview
Problem
Conventional geared motors have inefficiencies in space utilization and symmetry, leading to larger volumes and less compact designs, which can result in increased material and oil usage, as well as less effective torque support and vibration behavior due to asymmetrical configurations.
Innovation Solution
A compact geared motor design featuring an asymmetrical housing part with a bevel gear unit driven by an electric motor, utilizing a channel with a non-vanishing angle for the ring gear meshing, and symmetrical connection surfaces for centering devices, allowing for a compact configuration and symmetrical mechanical interfaces, reducing material and oil volume, and enhancing torque support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a symmetrical housing configuration is used, then the device can be connected on both sides in the same manner, but the interior volume space is larger and the design is less compact
Solution Approach 1:
The housing is designed with an asymmetrical configuration where the plane containing the input shaft axis and parallel to the intermediate shaft axis is not a plane of symmetry for the housing outer surface. This allows the housing to be compact on one side while maintaining symmetrical connection surfaces for bidirectional mounting capability
Solution Approach 2:
The housing is designed with two connection surfaces that have identical drilling patterns and symmetrical centering devices, enabling the same device to be connected on both sides in the same manner. This universal interface design allows bidirectional mounting without requiring different connection configurations
2Quantity of substance
If a compact gear unit configuration is used, then material and oil volume are reduced, but the housing configuration becomes more complex
Solution Approach 1:
The asymmetrical housing configuration allows the housing wall to be positioned closer to the toothed parts on one side, reducing the interior volume space and thus the amount of lubricating oil required, while maintaining functional symmetry for connection surfaces
3Volume of stationary object
If an asymmetrical housing configuration is used, then the interior volume is reduced, but the connection interfaces on both sides may differ
Solution Approach 1:
The housing outer surface is asymmetrical to reduce interior volume, while the connection surfaces are specifically designed to be symmetrical with identical drilling patterns and centering devices, maintaining consistent connection interfaces on both sides
Data Source
AI summary
A geared motor includes a gear unit having a first intermediate shaft, an input shaft and an output shaft. The gear unit has two connection surfaces set apart from each other to which a device to be driven by the gear unit is connectable to the gear unit, each connection surface having a drilling pattern. The housing part is asymmetrical such that the plane whose normal direction is aligned in parallel with the axis of rotation of the first intermediate shaft and includes the axis of rotation of the input shaft, is no plane of symmetry in relation to the entire outer surface of the housing part and also no plane of symmetry in relation to the housing wall of the housing part. The plane is a plane of symmetry with regard to the two connection surfaces together with their drilling patterns.