Female Terminal Resilient Piece Deflection Control
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Solution Overview
Problem
Existing female terminals lack excessive deflection preventing mechanisms, leading to unstable contact pressure and potential plastic deformation of resilient pieces when subjected to loads, such as those from rolling male terminals.
Innovation Solution
Incorporating excessive deflection preventing portions on the peripheral walls of the female terminal, which contact the resilient pieces at two positions to prevent excessive deflection, distribute stress evenly, and maintain a stable seated posture, thereby preventing plastic deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If excessive deflection preventing pieces are formed by cutting and bending parts of upper and lower walls of the protection member, then excessive deflection of resilient pieces is prevented, but the resilient pieces are supported at one position making their seated posture unstable and contact pressure unstable
Solution Approach 1:
The excessive deflection preventing piece is divided into multiple support portions (first support portion and second support portion) that contact the resilient piece at different positions. This segmentation provides multi-point support, stabilizing the seated posture of the resilient piece and ensuring stable contact pressure, while avoiding the need for complex cutting and bending operations on the protection member walls.
2Strength
If resilient pieces are supported at one position by excessive deflection preventing pieces, then excessive deflection is prevented, but stress from the excessive deflection preventing piece is concentrated on one position causing contact pressure to vary when resilient piece is deformed plastically
Solution Approach 1:
The support function is segmented into multiple support portions that contact different parts of the resilient piece. This distributes the stress from the excessive deflection preventing piece across multiple contact points rather than concentrating it at one position, preventing stress concentration and ensuring stable contact pressure even when the resilient piece undergoes plastic deformation.
3Device complexity
If resilient pieces contact abutting portion at only one position, then structure is simple, but resilient piece is deflected easily at opposite front and rear ends of this abutting portion
Solution Approach 1:
The support structure is segmented into multiple support portions positioned at different locations along the resilient piece. This multi-point support prevents easy deflection at the front and rear ends of the resilient piece by providing distributed support, while maintaining relative structural simplicity through the use of integrated support features on the base rather than complex external 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 solution stabilizes the seated posture of resilient pieces, reduces the likelihood of plastic deformation, and maintains consistent contact pressure with the male terminal by distributing stress across multiple contact points, enhancing the overall performance of the resilient pieces.
Implementation Method 1
at least one resilient piece extending in a front-back direction while substantially facing a peripheral wall in the tubular portion
Implementation Method 2
front and rear abutting portions configured to prevent the resilient piece from being deflected excessively by contacting the resilient piece
Data Source
AI summary
A female terminal (40) to be connected to a male terminal (80) includes a tubular portion (41) configured by a plurality of peripheral walls. Resilient pieces (46, 47) extend in a front-back direction while facing the peripheral walls in the tubular portion (41). Excessive deflection preventing portions (90, 91) are provided on the peripheral walls, including a front abutting portion (92) and a rear abutting portion (93) arranged behind the front abutting portion (92), and configured to prevent the resilient pieces (46, 47) from being deflected excessively by contacting the resilient pieces (46, 47) at both the front and rear abutting portions (92, 93).