Backlight Module Connecting Element Asymmetry
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Solution Overview
Problem
The existing methods for assembling and disassembling liquid crystal display devices, particularly the use of screws and elastic latch hooks, are inefficient and costly, leading to a lengthy assembly process and potential damage to components during disassembly.
Innovation Solution
A connecting element comprising a mold frame and a back plate with a convex bump unit and an elastic latch unit, where the latch unit's design prevents elastic restoration and damage by ensuring easy engagement and disengagement, featuring a latch hook part with a top surface higher than the convex bump unit's bottom surface, facilitating efficient assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If elastic latch hook is used to connect mold frame and back plate, then assembly process is simplified, but disassembly becomes difficult and time-consuming due to elastic restoration
Solution Approach 1:
The latch hook is designed with asymmetric geometry where the top surface height is greater than the bottom surface height. This asymmetry creates a one-way engagement mechanism: during assembly, the latch hook can be pressed to engage with the convex bump, but during disassembly, the height difference prevents elastic restoration that would cause re-engagement, allowing clean disengagement without repeated trials.
2Ease of manufacture
If elastic latch hook is used for connection, then material cost is reduced compared to screws, but repetitive flipping during disassembly causes latch hook damage
Solution Approach 1:
The asymmetric design with top surface higher than bottom surface creates a controlled engagement geometry. This prevents the elastic latch hook from snapping back to engage with the convex bump during disassembly, eliminating repetitive flipping and mechanical stress that would otherwise damage the latch hook, thereby improving durability while maintaining cost-effectiveness.
3Strength
If screws are used to connect mold frame and back plate, then connection strength is ensured, but assembly and disassembly process becomes complicated and time-consuming
Solution Approach 1:
The patent replaces the screw-threaded mechanical connection system with an elastic latch hook engagement system. This substitution maintains sufficient connection strength through the elastic engagement while dramatically simplifying both assembly (single pressing action) and disassembly (single lifting action), eliminating the need for threaded fasteners and reducing overall process time.
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 enables easy and cost-effective assembly and disassembly of the mold frame and back plate, reducing material costs and preventing latch hook damage during repetitive disassembly attempts.
Implementation Method 1
the latch unit having a latch hook part... the bottom surface of the convex bump unit contacting to push the top surface of the latch hook part so as to make the latch unit and the convex bump unit fitly engaged
Data Source
AI summary
The present invention provides connecting element, which includes mold frame and back plate; side of back plate disposed with convex bump unit having a bottom surface, side of mold frame disposed with opening having elastic latch unit inside, latch unit having latch hook part with top surface; wherein bottom surface of convex bump unit contacting to push top surface of latch hook part to make latch unit and convex bump unit fitly engaged, side of top surface of latch hook part near free end of latch hook part higher than bottom surface of convex bump unit. The invention also provides backlight module and disassembly method. Through designing different latch unit and convex bump unit, the invention effectively prevents latch hook part from springing back and damages caused by repetitive flipping latch hook part during disassembly. The invention ensures easy assembly/disassembly and reduces cost.