Flat Cable Terminal Connection Structure with Resilient Linking Portion
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Solution Overview
Problem
The existing connection structures for flat cables and terminal fittings are prone to damage when the flat cable is pulled rearward, leading to a reduction in connection reliability due to generated stress.
Innovation Solution
A connection structure with a flat cable having first and second connecting portions and a terminal fitting with corresponding welded portions, where the second connecting portion is reinforced and the linking portion is resiliently deformable to alleviate stress, dispersing it through curved boundary portions, thereby maintaining the connection reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single connecting portion is used to connect the flat cable and terminal fitting, then the connection structure is simple, but the connection reliability reduces when stress is applied
Solution Approach 1:
The connection structure is divided into two separate connecting portions: a first connecting portion at the front end of the flat cable and a second connecting portion rearward of the first. This segmentation allows stress to be distributed across multiple connection points rather than concentrated at a single point, thereby maintaining connection reliability while keeping the overall structure relatively simple.
2Ease of operation
If the flat cable is pulled rearward, then the cable remains flexible and movable, but stress damages the connected part
Solution Approach 1:
The linking portion is designed with curved boundary portions that can resiliently deform in advance to absorb and distribute stress before it reaches the connected parts. This preliminary deformation action protects the welded portions and connecting portions from stress damage while allowing the flat cable to maintain its flexibility for ease of operation.
3Reliability
If a resiliently deformable linking portion with curved boundary portions is added, then stress is alleviated and connection reliability is maintained, but the device complexity increases
Solution Approach 1:
The linking portion incorporates curved boundary portions that enable resilient deformation to absorb stress. The curved geometry allows the structure to flex and distribute stress more effectively compared to straight edges, maintaining connection reliability. While this adds some complexity, the curvature is integrated into the existing linking portion design rather than adding separate components.
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 connection structure effectively suppresses the reduction in connection reliability by alleviating stress through resilient deformation and reinforcement, ensuring the connection remains stable even under external forces.
Implementation Method 1
the terminal fitting including a first welded portion to be welded to the first connecting portion and a second welded portion located rearward of the first welded portion and to be welded to the second connecting portion
Data Source
AI summary
It is aimed to provide a connection structure for connecting a flat cable and a terminal fitting, the connection structure suppressing a reduction in connection reliability. A terminal fitting (10) is connected to a flat cable (60). The flat cable (60) includes a first connecting portion (64) located in a front end part of the flat cable (60) and a second connecting portion (65) located rearward of the first connecting portion (64). The terminal fitting (10) includes a first welded portion (17) to be welded to the first connecting portion (64) and a second connecting portion (18) located rearward of the first welded portion (17) and to be welded to the second connecting portion (65).