Electric Compressor Connecting Pin Segmentation
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Solution Overview
Problem
Conventional electric compressors require significant force to disassemble due to the elastic deformation of the insertion member, making maintenance difficult.
Innovation Solution
The electric compressor design includes a housing with a first and second housing portion, a connecting pin with press-fitting and insertion portions, and gaskets for insulation, allowing for easy disassembly while maintaining the same electric potential across the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the insertion member is inserted into the first insertion hole and the second insertion hole while being elastically deformed to ensure electrical connection, then the first housing portion and the second housing portion have the same electric potential, but a large force is required to remove the housing portions making disassembly difficult
Solution Approach 1:
The connecting pin is divided into three distinct portions: a press-fitting portion (first portion) that is press-fitted into the first housing portion, a bridge portion (second portion) that connects the two housing portions, and an insertion portion (third portion) that is inserted into the second housing portion. This segmentation allows the press-fitting portion to provide reliable electrical connection while the insertion portion allows easy removal, resolving the contradiction between connection reliability and disassembly ease.
2Reliability
If the insertion member is made with large elastic force to ensure certain electrical connection, then the electrical connection is reliable, but the removing work becomes difficult
Solution Approach 1:
The connecting pin is segmented into a press-fitting portion that provides strong electrical connection through press-fitting, and an insertion portion that allows easy removal. The bridge portion connects these two functional sections. This segmentation enables the press-fitting portion to ensure reliable electrical connection while the insertion portion facilitates easy maintenance and removal.
Solution Approach 2:
Different portions of the connecting pin have different properties: the press-fitting portion has high elastic force for reliable connection, while the insertion portion has reduced elastic force for easy removal. This local differentiation of properties resolves the contradiction between connection reliability and maintenance ease.
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 facilitates easy disassembly and assembly of the compressor components while ensuring they remain electrically connected, enhancing maintenance efficiency and assembly accuracy.
Implementation Method 1
the one end portion is elastically deformed to reduce the outer diameter of the one end portion
Data Source
AI summary
An electric compressor includes a housing including a first housing portion made of metal, the first housing portion having a first joint surface and a first pin hole, a second housing portion made of metal, the second housing portion having a second joint surface and a second pin hole, a connecting pin made of metal, the connecting pin having a press-fitting portion and a first insertion portion having a first contact portion and removably inserted into the second pin hole, and a first gasket having an insulation property, the first gasket having a first pin insertion hole, the first gasket being interposed between the first joint surface and the second joint surface.