Terminal Fitting Fixing Structure for Braided Shield
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Solution Overview
Problem
Existing terminal fitting fixing structures for unshielded cables in vehicles allow relative movement between terminal fittings and braided members until crimping, leading to reduced workability during mounting.
Innovation Solution
A terminal fitting fixing structure that includes a braided member, a spacer with a first cylindrical portion and flange, a terminal fitting with a second cylindrical portion and flange, and a sleeve, where the spacer and sleeve are deformed to form crimped states, restricting movement between the terminal fitting and braided member, with the second flange contacting the first flange to secure the braided member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the terminal fitting is fitted around the cable and braided member without preliminary positioning structures, then the assembly process is simpler, but the terminal fitting may shift in position relative to the braided member during mounting, lowering workability
Solution Approach 1:
The spacer is fitted around the cable and braided member before the terminal fitting is installed. This preliminary positioning structure prevents the terminal fitting from shifting during the mounting process, thereby improving workability without significantly complicating the assembly process
Solution Approach 2:
The spacer acts as an intermediary component between the cable/braided member assembly and the terminal fitting. It provides a stable positioning interface that ensures the terminal fitting maintains its intended position relative to the braided member during installation
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 structure effectively suppresses relative movements between the terminal fitting and braided member, improving workability by ensuring secure fixation and preventing shifting during mounting, enhancing electrical connectivity and fixing strength.
Implementation Method 1
the first cylindrical portion of the spacer is deformed radially inward to form a crimped state of the braided member between the spacer and the cable, and the sleeve is deformed radially inward and forms a crimped state of the braided member at least between the sleeve and the terminal fitting
Implementation Method 2
the first cylindrical portion of the spacer is deformed radially inward to form a crimped state of the braided member between the spacer and the cable, and the sleeve is deformed radially inward and forms a crimped state of the braided member
Implementation Method 3
in a contact state in which the second flange is in contact with the first flange
Data Source
AI summary
A spacer has a first cylindrical portion where a primary crimped state of a braided member is formed between the spacer and a cable. After the primary crimped state is formed, in a state in which a second flange of the terminal fitting fitted around the cable and the braided member is in contact with a first flange, a sleeve fitted around a second cylindrical portion forms a crimped state of the braided member between the sleeve and the terminal fitting at the second cylindrical portion, so that the terminal fitting is fixed to the braided member.