Rotating Electric Machine Terminal Casing for Fire Shielding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The integration of a rotating electric machine system with an internal combustion engine in a combined power system increases the complexity and compromises flame and heat shielding abilities due to the need for a relay connector and through holes in the enclosure.
Innovation Solution
A rotating electric machine system is designed with a fire prevention member that partitions the system into regions, incorporating a terminal casing to accommodate electric terminal portions and a first insertion hole, eliminating the need for a relay connector and maintaining shielding abilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a relay connector is provided in the enclosure to electrically connect external devices to the rotating electric machine, then electrical connectivity is achieved, but the number of component parts increases and the flame shielding ability decreases
Solution Approach 1:
The patent extracts the electrical connection function from the relay connector and integrates it directly into the rotating electric machine housing. The electric terminal portions are built into the housing structure itself, eliminating the need for a separate relay connector component while maintaining electrical connectivity functionality.
Solution Approach 2:
The patent merges the electrical terminal function with the housing structure. The housing serves dual purposes: providing mechanical protection and housing the electrical terminals, thereby reducing the total number of components while achieving both structural and electrical connectivity functions.
2Ease of operation
If through holes are formed in the enclosure to pass electric terminal portions or wiring, then electrical connectivity is achieved, but the flame shielding ability and heat shielding ability decrease
Solution Approach 1:
The patent applies local quality by providing fire prevention members specifically at critical locations where electrical terminals penetrate the housing. Instead of compromising the entire enclosure's fire resistance, localized fire prevention structures are installed only at the terminal penetration points to maintain both electrical connectivity and flame shielding.
Solution Approach 2:
The fire prevention member acts as an intermediary element between the electrical terminal portions and the external environment. This intermediary component allows electrical wires to pass through while maintaining the fire barrier, mediating between the need for electrical connectivity and the requirement for flame shielding.
3Object-affected harmful factors
If the rotating electric machine system is partitioned into regions using a fire prevention member, then flame and heat shielding ability is improved, but the device complexity increases
Solution Approach 1:
The housing structure is designed to serve multiple functions simultaneously: mechanical protection, electrical terminal housing, and fire prevention. By making the housing multi-functional, the patent reduces the need for separate dedicated fire prevention structures, thereby maintaining flame shielding ability while minimizing increases in device complexity.
Data Source
AI summary
A rotating electric machine system is equipped with a fire prevention member that covers at least one end part of a rotating electric machine housing. By the fire prevention member, a fire prevention region is formed in which the rotating electric machine housing is not positioned. A first insertion hole is formed in the fire prevention member. The first insertion hole is closed by a terminal casing in which electric terminal portions are accommodated.