Connector Assembly Lock Mechanism EMI Elimination
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Solution Overview
Problem
Existing connector assemblies with lock mechanisms are not suitable for high-speed signal transmission due to potential electromagnetic interference (EMI) caused by holes in the lock mechanism, which can affect signal integrity.
Innovation Solution
A connector assembly design featuring a lock mechanism formed by an engagement projection and recess, where the first connector's engagement member is fixed to the shell without projecting outward, and the second connector's engagement projection moves inward to engage with the recess, enclosing contact areas to prevent EMI by eliminating holes in the connected state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lock mechanism with lock holes and passing holes is used, then the connector assembly can be locked securely, but electromagnetic interference (EMI) occurs due to the holes
Solution Approach 1:
The patent removes the passing holes through which lock hooks engage with lock holes. Instead, the lock hooks are formed to directly engage with the lock holes without requiring passing holes, thereby eliminating the harmful holes that cause EMI while maintaining the locking function.
Solution Approach 2:
The patent inverts the traditional lock mechanism design by making the lock hooks integral to the connector body rather than separate components that require passing holes. The engagement structure is redesigned so that locking occurs through direct engagement without requiring holes through the shell.
2Reliability
If the first engagement member has a projecting portion, then the lock mechanism can be formed, but the connector assembly may be damaged
Solution Approach 1:
The patent inverts the design by making the second engagement member have the projecting portion (lock hook) instead of the first engagement member. This reversal allows the locking protrusion to be on the movable connector side, reducing the risk of damage to the fixed connector while maintaining effective locking.
Data Source
AI summary
A connector assembly comprises a first connector and a second connector connectable to each other. The first connector comprises first terminals each having a first contact portion, a first shell having a first mating portion and a first engagement member formed with an engagement recess. The second connector comprises second terminals each having a second contact portion, a second shell having a second mating portion and a second engagement member having an engagement projection. Under a connected state where the first connector and the second connector are connected to each other, the first mating portion and the second mating portion entirely enclose contact areas in a perpendicular plane (YZ-plane) at which the first contact portions are in contact with the second contact portions. Under the connected state, the engagement projection and the engagement recess are engaged with each other to lock the connected state.