Connector Latch Pre-Mating Deflection for Audible Click
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Solution Overview
Problem
Existing connector latches in the automotive industry lack an audible 'click' sound for secure mating, are prone to permanent set due to compression, and have dimensional control issues, which affect their reliability and effectiveness.
Innovation Solution
A method involving a pre-mating deflection process to lock the connector latch in a preloaded position, enhancing the audible 'click' sound, reducing permanent set, and improving dimensional control by utilizing flexible latch beams and overstress protection surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the connector latch is manufactured in an undeflected position, then the manufacturing process is simpler, but the latch produces no audible click sound and has poor dimensional control
Solution Approach 1:
The connector latch is pre-deflected during manufacturing to a predetermined position that establishes the correct geometric relationship between latching features. This preliminary action ensures proper dimensional control and audible click sound while maintaining manufacturing simplicity through a single-step deflection process during molding
2Device complexity
If the connector latch is left in an undeflected position, then the latch structure is simpler, but the latch is prone to permanent set when compressed
Solution Approach 1:
The connector latch is deflected to change its structural parameters, specifically pre-positioning the latch beam and latching features in a loaded configuration. This parameter change increases the latch's resistance to permanent set by establishing internal stresses that counteract external compression forces during storage and handling
3Length of stationary object
If the latching features are not preloaded, then the latch profile is taller, but the click sound is quieter and less reliable
Solution Approach 1:
The latching features are pre-deflected to a loaded position before final assembly, creating preliminary contact forces between mating surfaces. This preliminary action ensures that when the connector is mated, the preloaded features generate a strong audible click sound through controlled elastic deformation, while the overall profile remains compact
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 provides an extra loud 'click' sound for secure mating, resistance to permanent set, and precise dimensional control, ensuring reliable engagement and durability of the connector latch.
Implementation Method 1
The connector latch is then subjected to a pre-mating deflection process, in order to deflect the connector latch and lock the connector latch in a preloaded position
Data Source
AI summary
Method of operating a connector latch used to securely hold together a connector apparatus, wherein the connector apparatus has at least a first housing and a second housing which can be mated together. Initially, after the connector latch is manufactured, the connector latch is in an undeflected position. After manufacture, the connector latch is subjected to a pre-mating deflection process, in order to deflect the connector latch into a preloaded position. After the pre-mating deflection process has been completed, the connector latch is locked in the preloaded position. The preloaded connector latch provides a number of desirable characteristics, including at least an extra loud “click” sound when the connecting latch is operated to mate the first housing with the second housing.