Flat Circuit Board Connector With Sharp Tip Projections
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Solution Overview
Problem
Conventional flat circuit board connectors with rounded tips fail to securely attach the board, leading to accidental separation due to the lack of circuit section on the backside, where a reinforcing film is present.
Innovation Solution
The connector features terminals with parallel arms having projections, where at least one arm has a sharp tip that cuts into the reinforcing film or area without a circuit section, providing enhanced gripping power and preventing separation, while maintaining contact pressure through a combination of sharp and rounded tips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If rounded tips are used on contact sections, then scratching of the flat circuit board is prevented, but accidental separation of the board occurs due to insufficient gripping power
Solution Approach 1:
The contact sections are designed with different tip geometries: one contact section has a rounded tip to prevent scratching the circuit board, while the other contact section has a sharp tip to cut into the reinforcing film and prevent accidental separation. This local differentiation allows each contact section to perform its specific function optimally.
2Reliability
If sharp tips are used on all contact sections, then gripping power is maximized, but damage to the circuit board increases
Solution Approach 1:
Instead of making all contact sections sharp, the invention applies sharp tips only to the contact section that needs maximum gripping power (typically the one contacting the reinforcing film), while keeping the other contact section rounded to protect the circuit board surface from damage.
3Ease of operation
If the projection positions of upper and lower arms are displaced, then insertion is easier, but gripping effectiveness is reduced
Solution Approach 1:
The invention optimizes the positional parameters of the projections on upper and lower arms to achieve the best balance between insertion ease and gripping effectiveness. The projections are positioned to align properly during insertion, ensuring both arms engage the flat circuit board simultaneously for maximum gripping effectiveness.
Data Source
AI summary
An electrical connector includes a housing (1) and a plurality of terminals (10) having parallel upper and lower arms (11, 12) that have projections (11A, 12A) between which a flat circuit board (F) is inserted for electrical connection to the terminals (10). The projection (12A) of the lower arm (12) has a sharp point.