Multi-Part Housing Sealing for Electric Motor Liquid Pump
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric motor driven liquid pumps for manual transmission lubrication in vehicles are complex to assemble and seal, leading to increased costs and reliability issues due to the need for multiple seal inserts and potential leakage risks.
Innovation Solution
A multi-part housing design with a single, multifunctional sealing element that seals the pump to the liquid container, separates the liquid chamber from the electronics chamber, and protects against environmental contamination, reducing assembly complexity and enhancing reliability by eliminating the need for multiple seals and minimizing leakage risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple seal inserts and O-rings are used to seal the motor/pump unit, then sealing reliability is improved, but assembly complexity and cost increase
Solution Approach 1:
The patent combines multiple separate sealing functions into a single integrated sealing element. This sealing element simultaneously seals the flange surface relative to the liquid container, separates the liquid chamber from the electronics chamber, and seals the electronics chamber relative to the environment, replacing what would traditionally require multiple separate seal inserts and O-rings.
Solution Approach 2:
The sealing element is designed with multi-functionality to perform three distinct sealing tasks at once: external flange sealing, internal chamber separation, and environmental protection. This universal sealing component eliminates the need for multiple specialized seals while maintaining comprehensive sealing coverage.
2Reliability
If multiple seal inserts and O-rings are used to seal the motor/pump unit, then sealing coverage is improved, but manufacturing cost increases
Solution Approach 1:
The patent combines multiple separate sealing functions into a single integrated sealing element. This sealing element simultaneously seals the flange surface relative to the liquid container, separates the liquid chamber from the electronics chamber, and seals the electronics chamber relative to the environment, replacing what would traditionally require multiple separate seal inserts and O-rings.
Solution Approach 2:
The sealing element is designed with multi-functionality to perform three distinct sealing tasks at once: external flange sealing, internal chamber separation, and environmental protection. This universal sealing component eliminates the need for multiple specialized seals while maintaining comprehensive sealing coverage.
3Reliability
If multiple seal inserts are used in the motor/pump unit, then sealing completeness is improved, but assembly effort increases
Solution Approach 1:
The patent combines multiple separate sealing functions into a single integrated sealing element. This sealing element simultaneously seals the flange surface relative to the liquid container, separates the liquid chamber from the electronics chamber, and seals the electronics chamber relative to the environment, replacing what would traditionally require multiple separate seal inserts and O-rings.
Solution Approach 2:
The sealing element is designed with multi-functionality to perform three distinct sealing tasks at once: external flange sealing, internal chamber separation, and environmental protection. This universal sealing component eliminates the need for multiple specialized seals while maintaining comprehensive sealing coverage.
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 solution simplifies assembly, reduces costs, and enhances the reliability of the pump's sealing mechanism, providing a more robust and contamination-resistant design that is easier to mount and maintain.
Implementation Method 1
an electric motor (26) and a pump (10) driven by it
Implementation Method 2
a centrifugal pump (10) by which the lubricant is merely conveyed to a distributor
Data Source
AI summary
An electric motor driven liquid pump, which can be used for forced lubrication of a motor vehicle manual transmission, has a housing flange-mountable on a fluid container via a flange surface. A stator including a motor winding and a magnetic rotor are incorporated in the housing for conveying liquid. The housing is formed of multiple parts including a pump housing section which has fluid inlets and outlets, a stator housing section which holds the stator and together with the pump housing section, delimits an electronics chamber in which the rotor is arranged, and a motor housing section which together with the stator housing section delimits an electronic chamber in which at least the stator is located. A sealing element seals the flange surface to the fluid container, separates the fluid chamber and the electronic chamber, and seals the latter from the environment.