Strip Lamp Fastener-Free Assembly via Rotational Latch
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Solution Overview
Problem
Conventional lighting devices, particularly strip lamps, face challenges in easy assembly and disassembly, which complicates installation and maintenance, often requiring fasteners that can be cumbersome and inconvenient.
Innovation Solution
A strip lamp design featuring a groove body with a blocking portion and a cover body with a latching member, including a V-shaped latching groove and a right-angled triangular portion, allows for assembly without fasteners by inserting the blocking portion into the V-shaped groove and rotating the cover body, and disassembly using a lever through a detaching hole, facilitating simple and tool-free installation and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional fasteners are used for assembly, then connection strength is improved, but assembly complexity and time increase
Solution Approach 1:
The patent replaces traditional mechanical fasteners (screws, bolts, clips) with a geometric interlocking mechanism. The L-shaped groove and L-shaped protrusion create a mechanical lock through shape complementarity, while the oblique surface provides automatic engagement through rotational motion, eliminating the need for separate fastening components.
Solution Approach 2:
The patent combines the positioning function (L-shaped groove and protrusion) and the fastening function (oblique surface engagement) into a single integrated mechanism. The cover body and groove body form a unified assembly system where the geometric features work together to provide both alignment and secure attachment without requiring additional fasteners.
2Reliability
If conventional fasteners are used for assembly, then connection reliability is improved, but assembly time increases
Solution Approach 1:
The L-shaped groove and L-shaped protrusion are pre-formed during manufacturing, establishing the positioning geometry in advance. During assembly, the user only needs to perform the final engagement action by rotating the cover body along the oblique surface, which automatically completes both positioning and fastening in a single motion.
Solution Approach 2:
The oblique surface converts rotational motion into linear engagement, creating a dynamic assembly process. The cover body rotates along the inclined surface, which transforms the fastening action into a smooth, guided motion that automatically drives the L-shaped protrusion into the L-shaped groove, reducing assembly time while maintaining reliability.
3Ease of operation
If complex fastening mechanisms are used, then disassembly control is improved, but ease of operation deteriorates
Solution Approach 1:
The patent inverts the traditional fastening approach by making the fastening action automatic through rotational motion rather than requiring manual fastener manipulation. The oblique surface is designed so that normal installation rotation automatically performs the fastening function, while disassembly simply requires reversing the rotation direction, making both operations equally simple.
4Manufacturing precision
If traditional assembly methods are used, then manufacturing precision requirements are reduced, but assembly precision increases
Solution Approach 1:
The L-shaped groove and L-shaped protrusion utilize asymmetric geometry to provide self-aligning capabilities. The right-angle configuration creates a unique fit that guides the components into proper alignment during assembly, reducing sensitivity to manufacturing tolerances while maintaining easy operation through the self-correcting geometric relationship.
Data Source
AI summary
A strip lamp made for easy assembly and disassembly contains a U-shaped groove body and a cover made for covering the groove body. The groove body and the cover are attached by a latch on the cover and a matching lock on the groove body on one side, and a pivot made by a V-shaped groove on the cover on the other side. Assembly can be conducted without the use of fasteners so that the strip lamp may be easily assembled.