Terminal Fitting Caulking Structure for Multi-Wire Grounding
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Solution Overview
Problem
Existing connection structures for terminal fittings require significant space and weight as the number of grounding wires increases, and they often suffer from reliability issues due to loose bolts and unstable crimping, which complicates the fastening process and increases costs.
Innovation Solution
A connection structure and method using terminal fittings with caulking pieces that enfold the outsides of caulked pieces on terminal connection parts, forming a holding space to securely connect multiple electric wires, reducing weight and space requirements while enhancing connection reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminal fittings are stacked and fastened with bolts to connect multiple grounding wires, then connection reliability is improved, but weight increases and space requirements increase
Solution Approach 1:
Multiple terminal fittings are integrated into a single terminal fitting body with multiple terminal connection parts extending from it. This merging eliminates the need to stack multiple separate terminal fittings, thereby reducing weight while maintaining the ability to connect multiple grounding wires simultaneously through each terminal connection part.
2Reliability
If terminal fittings are stacked to connect multiple grounding wires, then connection reliability is improved, but the thickness and space required above the grounding face increase
Solution Approach 1:
The invention combines multiple terminal fittings into one integrated structure where multiple terminal connection parts extend from a single terminal body. This eliminates the need to stack multiple terminal fittings in the thickness direction, thereby reducing the overall thickness and space requirement above the grounding face while still enabling connection of multiple grounding wires.
3Reliability
If terminal fittings are stacked and fastened with bolts, then collective connection of multiple grounding wires is achieved, but fastening work time increases due to bolt/nut length adjustment
Solution Approach 1:
Multiple terminal connection parts are integrated into a single terminal fitting body, allowing multiple grounding wires to be connected simultaneously to one grounding face without requiring sequential stacking and fastening of multiple separate terminal fittings. This eliminates the need for repeated bolt/nut length adjustments and significantly reduces fastening work time.
4Reliability
If joint connector with holding mechanisms is used to collectively connect multiple grounding wires, then connection capability is improved, but housing size increases and cost increases
Solution Approach 1:
The invention integrates multiple terminal connection parts directly into the terminal fitting body, eliminating the need for a separate joint connector with housing and holding mechanisms. This merging approach achieves collective connection capability while simplifying the structure, reducing size, and lowering cost.
Solution Approach 2:
The invention extracts and eliminates the unnecessary joint connector housing and holding mechanisms from the system. By directly providing multiple terminal connection parts on the terminal fitting body, it removes the complex intermediate structure while retaining the essential function of collectively connecting multiple grounding wires.
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 allows for high-reliability collective connection of multiple electric wires with reduced weight and space, eliminating the need for special holding mechanisms and stabilizing the crimping process, resulting in a more efficient and cost-effective terminal fitting system.
Implementation Method 1
the connection terminal is caulked to the terminal connection part so that the pair of caulking pieces of the connection terminal enfold outsides of a pair of caulked pieces provided on the terminal connection part
Data Source
AI summary
A terminal fitting includes a terminal body and terminal connection parts extended from the terminal body. Connection terminals each has a pair of caulking pieces, and each of the connection terminals configured to be connected to an end part of an electric wire. In each of the terminal connection parts, the connection terminal is caulked to the terminal connection part so that the pair of caulking pieces enfold outsides of a pair of caulked pieces provided on the terminal connection part in a state that a bottom face between the pair of caulking pieces faces an opening between ends portions of the pair of caulked pieces. The terminal fitting is connected to the electric wires through the connection terminals.