Connection Terminal Mounting Structure for Non-Rotational Replacement
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Solution Overview
Problem
Conventional mounting structures for connection terminals in turbo compressors require extensive disassembly and heavy machinery for replacement, making the process cumbersome and time-consuming, especially for large motors.
Innovation Solution
A mounting structure that allows the connection terminal to be easily replaced by inserting one end into the housing and exposing the other end, with a flange portion that can be removed without rotating the terminal, and includes an orientation adjusting member and slack in the lead wire for secure insulation and visible replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the conventional mounting structure with terminal blocks and nuts is used, then the connection terminal can be securely mounted, but the replacement process requires extensive disassembly and heavy machinery
Solution Approach 1:
The connection terminal is divided into a modular structure with a separate flange portion that can be independently removed. This segmentation allows the terminal to be replaced without disassembling the entire motor housing or bearing supports, resolving the contradiction by enabling easy repair while maintaining secure mounting through the flange-bolt interface.
Solution Approach 2:
The flange portion is extracted as a separate removable component from the connection terminal. This extraction allows the terminal to be taken out through the mounting hole without removing the heavy motor end cover or disassembling the bearing supports, thereby improving repair ease while reducing operational complexity.
2Adaptability or versatility
If the connection terminal is mounted with rotation capability, then installation flexibility is improved, but the lead wire orientation and insulation distance cannot be controlled
Solution Approach 1:
The flange portion incorporates asymmetric features including a positioning protrusion and corresponding positioning groove, along with non-uniform bolt hole distribution. This asymmetric design eliminates rotational freedom while maintaining precise lead wire orientation and insulation distances, resolving the contradiction by providing deterministic positioning rather than flexible rotation.
Solution Approach 2:
The positioning protrusion and groove are pre-configured on the flange portion to automatically establish the correct orientation during installation. This preliminary action ensures that the lead wire orientation and insulation distances are controlled from the outset, eliminating the need for post-installation adjustment while maintaining precision.
3Ease of repair
If the mounting structure allows terminal extraction, then replacement is simplified, but the terminal may become loose or misaligned
Solution Approach 1:
The connection terminal is segmented into a removable flange portion and a fixed mounting portion. The flange can be extracted for replacement while the mounting hole and positioning features remain intact in the housing, ensuring that reinstallation maintains proper alignment and reliability without requiring full disassembly.
Solution Approach 2:
The asymmetric positioning protrusion and groove create a unique fit that prevents misalignment during reinstallation. This asymmetric configuration ensures that when the flange is reattached, it can only be mounted in the correct orientation, thereby maintaining mounting reliability while allowing for easy replacement.
Data Source
AI summary
A mounting structure for a main terminal for mounting the main terminal to a housing in the state of one end portion to which a lead wire can be affixed being inserted into the housing, and the other end portion being exposed to the outside of the housing, in which the housing has a mounting hole for inserting and extracting the one end portion together with the lead wire; and the main terminal has a flange portion that can mount the main terminal about the mounting hole from the outside of the housing without involving rotation of the main terminal.