Geared Motor Housing Layout for Compact Symmetric 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 requirements, 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, where the housing part is produced using a die casting method with sliders moved during demolding, allowing for a channel at an angle that accommodates the ring gear, reducing interior space and enabling symmetrical connection surfaces and centering devices for efficient assembly and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the housing part is designed with an asymmetrical configuration to accommodate the bevel gear unit, then the gear unit can have a compact configuration with reduced interior volume space, but the connection surfaces and mechanical interfaces must be carefully arranged to maintain symmetry for device connection
Solution Approach 1:
The housing part is designed with an asymmetrical configuration where the plane containing the input shaft axis and parallel to the first intermediate shaft axis is not a plane of symmetry for the outer surface or housing wall. This asymmetry allows the housing to fit tightly around the bevel gear unit, accommodating the 90-degree gear arrangement and reducing the interior volume space required.
Solution Approach 2:
Despite the asymmetrical housing configuration, the design provides symmetrical connection surfaces and identical drilling patterns on both sides of the housing part. This allows the same device to be connected to both connection surfaces in the same manner, providing versatility and ease of installation while maintaining the compact asymmetrical internal structure.
2Quantity of substance
If the housing part is made compact with reduced interior volume, then material and oil requirements are reduced, but the die casting process requires careful consideration of slider movement directions for demolding
Solution Approach 1:
The die casting process utilizes multiple slider movement directions (first drawing direction and second drawing direction) to demold the compact housing part. By moving sliders in different dimensional directions, the process accommodates the complex asymmetrical geometry while enabling production of the compact design that reduces material and oil requirements.
3Volume of moving object
If the housing part has an asymmetrical configuration, then compactness is achieved, but symmetrical connection surfaces must be provided to allow device connection on both sides
Solution Approach 1:
The housing part features an asymmetrical outer configuration that tightly accommodates the bevel gear unit, reducing overall volume. The asymmetry is maintained in the housing wall and internal structure while allowing for symmetrical connection interfaces.
Solution Approach 2:
The housing part provides two symmetrical connection surfaces with identical drilling patterns and centering devices, enabling the same type of device to be connected to either side. This universal connection capability maintains adaptability despite the asymmetrical internal configuration.
4Volume of moving object
If the channel is arranged at an angle to the input shaft axis, then the ring gear can be accommodated in the interior space, but the die casting slider must move in a non-vanishing angle direction
Solution Approach 1:
The channel is arranged extending through the housing wall at an angle (non-vanishing angle) to the input shaft axis, allowing the ring gear to be accommodated in the interior space. The die casting slider moves in this angled direction to form the channel, utilizing multi-dimensional slider movement to achieve the optimal gear arrangement.
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.