Integrated Pump-Motor Housing Cover for Low-Complexity Sealing
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Solution Overview
Problem
Existing pump-motor units for motor vehicles require complex and costly sealing to protect against environmental influences, leading to increased weight, space consumption, and development costs due to their integration into the consumer's mounting shaft, especially in designs like sump pumps and external units with multi-part housings.
Innovation Solution
A pump-motor unit design featuring a housing with a housing cover, intermediate structure, and motor cover that defines a conveying chamber, utilizing a rotatable conveying element driven by a drive shaft, with a mounting structure for external attachment, and incorporating seals and bearings to ensure protection and efficient fluid conveyance without the need for a consumer's mounting shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pump-motor unit is integrated into the consumer's mounting shaft (sump pump design), then protection from environmental influences is improved, but the device complexity and manufacturing costs increase due to complex sealing requirements and precise surface treatment
Solution Approach 1:
The housing is divided into multiple separable parts (first housing part, second housing part, third housing part) that can be assembled together to form the complete pump-motor unit housing. This segmentation allows each part to be manufactured and sealed independently, reducing the overall sealing complexity compared to a single integrated mounting shaft design.
2Reliability
If the pump-motor unit is integrated into the consumer's mounting shaft, then protection from environmental influences is improved, but the weight and space requirements increase
Solution Approach 1:
The housing is divided into multiple separable parts (first housing part, second housing part, third housing part) that can be assembled together to form the complete pump-motor unit housing. This segmentation allows each part to be manufactured and sealed independently, reducing the overall sealing complexity compared to a single integrated mounting shaft design.
3Adaptability or versatility
If external pump-motor units use multi-part housings to protect from environmental influences, then the mounting flexibility is improved, but the device complexity and space consumption increase due to additional surrounding housing
Solution Approach 1:
The mounting structure is integrated directly into the housing parts themselves rather than being separate components. The first housing part includes a mounting flange with mounting shaft, and the second housing part includes a mounting structure with opening, allowing the housing to serve both protective and mounting functions simultaneously.
Solution Approach 2:
The housing parts serve multiple functions: they provide structural enclosure, environmental protection through integrated seals, and mounting attachment through integrated mounting flanges and structures. This multi-functionality eliminates the need for separate surrounding housings required in traditional external pump designs.
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
The design allows for cost-effective, space-saving, and lightweight pump-motor units that are protected from environmental influences, reducing manufacturing complexity and costs while maintaining efficient fluid conveyance and cooling capabilities.
Implementation Method 1
the seal (15) arranged between the first housing part (1) and the second housing part (2)
Implementation Method 2
a conveying device (10) with a conveying element (13, 14) rotatable in the conveying chamber (11) for conveying a fluid
Implementation Method 3
a drive motor (20), which is connected to the conveying device (10) via a drive shaft (4)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Pump-motor unit for conveying a fluid, for example for conveying gear oil and/or lubricating oil in motor vehicles, comprising: a housing comprising a housing cover (1), a housing intermediate structure (12) and a motor cover (2), wherein the housing cover (1) and the housing intermediate structure (12) define a conveying chamber axially at both end faces and radially circumferentially, a conveying device (10) with a conveying element (13, 14) rotatable in the conveying chamber for conveying the fluid, and a drive motor (20) connected to the conveying device (10) via a drive shaft (4), wherein the housing cover (1) forms a receiving shaft (11), and the drive motor (20) and the housing intermediate structure (12) are arranged in the receiving shaft (11).