Terminal Fitting Bent Portion Reinforcement With Press Structure
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Solution Overview
Problem
Existing terminal fittings with projecting piece structures to reinforce bent portions face challenges in structural complexity and inadequate deformation prevention, particularly when loads are applied to the wire connection portion.
Innovation Solution
A terminal fitting design featuring a bent portion with a press portion and deformation restricting portion that protrudes in the plate thickness direction, integrated as a compact projecting piece structure, enhances rigidity by forming a tubular shape with the engaging portion, preventing deformation through abutment against the bent portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a projecting piece structure is added to reinforce the bent portion, then the deformation resistance is improved, but the structural complexity increases
Solution Approach 1:
The patent combines the reinforcing function and the pressing operation function into a single integrated pressing portion structure. The pressing portion has a first pressing surface for receiving pressing force and a second pressing surface that contacts the bent portion, eliminating the need for separate reinforcing projections while providing both reinforcement and pressing capabilities.
Solution Approach 2:
The pressing portion serves multiple functions: it receives pressing force during assembly, transmits the force to bend the terminal fitting, and simultaneously reinforces the bent portion to prevent deformation. This multi-functional design avoids adding extra components for reinforcement.
2Strength
If existing projecting piece structures are applied to reinforce the bent portion, then the deformation resistance is improved, but the structure becomes more complex and reinforcement is insufficient
Solution Approach 1:
The patent extends the pressing portion in the plate thickness direction to create a three-dimensional structure that provides reinforcement. By utilizing the thickness dimension, the pressing portion forms an L-shaped configuration with surfaces oriented in different directions, achieving reinforcement without adding planar complexity.
Solution Approach 2:
The pressing portion is strategically positioned and shaped to concentrate reinforcement exactly where needed - at the bent portion. The first and second pressing surfaces are oriented to receive and transmit forces in specific directions, providing localized reinforcement precision without global structural complexity.
Data Source
AI summary
A terminal fitting (10, 10A, 10B) is plate-shaped and is bent in a plate width direction. The terminal fitting (10, 10A, 10B) includes: a bent portion (11); a first connection portion (12) extending from the bent portion (11) in a first direction; a second connection portion (13) extending from the bent portion (11) in a second direction that intersects the first direction; a press portion (31) that protrudes from an end of the bent portion (11) on a second connection portion (13) side in the plate thickness direction of the bent portion (11), and has plate surfaces respectively facing the first direction and a direction opposite to the first direction; and a deformation restricting portion (32) that protrudes from the press portion (31) in the first direction, and faces an engaging portion (25) located on a bent portion (11) side.