Snap-Mounted Optoelectronic Module Assembly
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Solution Overview
Problem
The assembly of optical modules to circuit boards is complicated by the use of screws or bolts, leading to increased part counts and complexity.
Innovation Solution
A snap-mounted and pluggable optoelectronic module design that uses posts to secure the module to the circuit board, with a frame and cover that latch into place, eliminating the need for screws or bolts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screws or bolts are used to secure the module to the circuit board, then the attachment is secure and permanent, but the assembly process becomes complicated and part count increases
Solution Approach 1:
The module is divided into separable components (module body, cover, posts) that can be assembled and disassembled independently. The posts are separate elements that interface with the circuit board, allowing the module to be secured without requiring threaded fasteners throughout the entire assembly.
Solution Approach 2:
The traditional screw or bolt fastening mechanism is extracted and replaced with a snap-fit post design. The posts are taken out as separate components that provide both structural support and securing function, eliminating the need for threaded fasteners and reducing assembly complexity.
2Reliability
If screws or bolts are used to secure the module to the circuit board, then the attachment is secure and permanent, but the part count increases
Solution Approach 1:
The posts serve multiple functions simultaneously: they provide structural support, enable snap-mounting to the circuit board, and act as securing elements without requiring separate screws or bolts. The cover and module body are merged into a unified structure that incorporates the latching mechanism.
Solution Approach 2:
The posts are designed as multi-functional elements that combine mounting, positioning, and securing functions. This universal design eliminates the need for multiple specialized components (screws, washers, spacers) and reduces the overall part count while maintaining secure attachment.
3Reliability
If a latch mechanism is added to retain the cover relative to the frame, then the cover retention is secure, but the device complexity increases
Solution Approach 1:
The latch mechanism incorporates movable elements (spring-loaded arms, cam features) that dynamically adjust during assembly and operation. The spring provides continuous force to maintain engagement, while the cam feature enables easy release through rotational motion, creating a secure yet simple retention system.
Solution Approach 2:
The latch mechanism is designed to automatically engage and disengage without requiring external actuators or complex control systems. The spring-loaded design allows the latch to self-regulate its engagement force, and the cam feature enables operator-initiated release through simple rotational motion.
Data Source
AI summary
An example embodiment includes a snap-mountable optoelectronic module. The module includes a frame, a cover, and a module latch. The frame includes two or more post blocks that each defines a module latch receiver. The cover is configured to at least partially enclose an inner assembly and includes a module latch recess. The module latch includes pivots and a latch portion. The pivots are received in the module latch receivers such that the module latch is configurable in an unlatched position and in a latched position. In the unlatched position, the latch portion is disengaged from the module latch recess. In the latched position, the latch portion is engaged with the module latch recess to retain the cover relative to the frame.