Integrated Motor Housing with Built-in Ring Gear
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Motor-transmission units with separate housings and internal ring gears require multiple assembly steps, increasing production complexity and cost, while also being less compact than desired for miniaturization goals.
Innovation Solution
A housing for motor-transmission units is designed with integrated housing sections that include accommodation segments for the motor and internal ring gear segments, allowing for a single-piece assembly that eliminates the need for a separate internal ring gear, reducing assembly steps and enabling a compact design through positive-locking connections and shared materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate internal ring gear is used in addition to the housing, then the planetary gear unit can function properly, but the number of assembly steps increases and production complexity increases
Solution Approach 1:
The internal ring gear is integrated directly into the housing structure, merging two previously separate components (housing and internal ring gear) into a single unified component. This eliminates the need for separate manufacturing and assembly of the internal ring gear, reducing assembly steps while maintaining the planetary gear unit's functionality
Solution Approach 2:
The housing is designed to serve multiple functions simultaneously: it provides structural enclosure and also forms the internal ring gear for the planetary gear unit. This multi-functionality approach allows the housing to fulfill both protective and mechanical transmission roles, reducing the overall component count
2Ease of manufacture
If multiple separate components are used for the housing and internal ring gear, then each component can be optimized independently, but the overall size and volume of the motor-transmission unit increases
Solution Approach 1:
By combining the housing and internal ring gear into a single integrated component, the overall volume of the motor-transmission unit is reduced. The merged structure eliminates gaps and interface regions between separate components, achieving compactness while maintaining manufacturability through optimized monolithic or multi-part housing design
3Manufacturing precision
If traditional assembly methods are used with separate housing and internal ring gear, then quality control can be applied to each component, but production time and cost increase
Solution Approach 1:
The integration of the internal ring gear into the housing reduces the total number of components that need to be manufactured, inspected, and assembled. This streamlining of the manufacturing process reduces production time and cost, while quality control can still be applied to the housing as a critical component with built-in ring gear features
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 simplifies assembly, reduces production costs, and enhances compactness, allowing for a wider range of applications by integrating the internal ring gear into the housing, thereby reducing the number of components and assembly efforts while ensuring leak tightness and durability.
Implementation Method 1
the housing sections being positively joined together, in particular, tongue-and-groove connection
Implementation Method 2
internal ring gear segments with internal toothing for working with toothed gears of a planetary gear unit
Data Source
AI summary
A housing for a motor-transmission unit with at least two housing sections which have in each case at least one accommodation segment for receiving a motor and an internally-toothed, internal ring gear segment for receiving a gear of a planetary gear unit, wherein the housing sections can be or are connected with each other and wherein, in the assembled state, the accommodation segments of the housing sections together form at least one accommodation compartment for holding the motor, and the internal ring gear segments of the housing sections together form an internal ring gear for mating with a gear on the planetary gear unit.