Modular Lamp Rod Assembly Without Threaded Wire Twisting
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Solution Overview
Problem
Conventional fishing pole style floor lamp assemblies are inconvenient to assemble due to the need for rotating rods with external and internal threads, leading to potential issues of insufficient or excessive tightening, which can result in poor fixing strength or entangled wires affecting circuit connections.
Innovation Solution
A modular rod assembly featuring a connection rod, extension rods, and tubular fasteners that allow for easy assembly by clamping the coupling ends with the tubular fasteners, eliminating the need for thread engagement and preventing swaying during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional thread engagement method is used to assemble rods, then the rods can be connected, but the assembly process becomes inconvenient and time-consuming due to the need to rotate entire rods
Solution Approach 1:
The rod connection system is segmented into distinct components: a first rod, a second rod, and a separate fastening mechanism (clamp or collar). This allows the rods to be positioned without rotational manipulation, and the fastening function to be performed independently by tightening the clamp, thereby improving assembly convenience and reducing assembly time.
Solution Approach 2:
A fastening mechanism (clamp or collar) is introduced as an intermediary component between the two rods. This mediator performs the connection function without requiring rotation of the rods themselves, eliminating the inconvenient rotational assembly process while maintaining secure connection.
2Strength
If thread engagement is used to connect rods, then the rods can be fixed together, but the fixing strength becomes insufficient when threads are loosely tightened
Solution Approach 1:
The fastening mechanism utilizes a clamp or collar with curved surfaces that wrap around the rods, providing uniform contact and distribution of clamping force. This curved geometry enhances fixing strength while allowing for controlled tightening through a simple rotational motion of the clamp, improving both strength and ease of operation.
3Strength
If rods are over-tightened using thread engagement, then strong fixation is achieved, but wires inside the rods become twisted or entangled
Solution Approach 1:
The connection system is divided into separate functional components: the rod positioning function and the fastening function. The clamp or collar is designed to apply force at specific external locations, segmenting the force application points away from the internal wire pathways, thereby preventing wire entanglement while maintaining strong fixation.
Solution Approach 2:
The fastening mechanism acts as an intermediary that transmits clamping force externally without directly compressing or deforming the rod interiors. This mediator allows strong fixation to be achieved through external clamping while keeping the internal environment undisturbed, preventing wire twisting and entanglement.
4Reliability
If conventional rod assembly method is used, then the lamp assembly can be constructed, but poor fixing strength results when threads are insufficiently tightened
Solution Approach 1:
The clamp or collar features curved contact surfaces that distribute clamping force uniformly around the rod circumference. This geometric design ensures reliable fixation is achieved through controlled tightening, eliminating the uncertainty of thread engagement while maintaining ease of operation through simple clamp rotation.
Data Source
AI summary
A lighting assembly includes a light stand, a lighting unit, and a modular rod assembly connecting the lighting unit to the light stand. The modular rod assembly includes a connection rod, a first extension rod connected to the connection rod, and a tubular fastener. The connection rod has a first coupling end. The first extension rod has a second coupling end. The tubular fastener is movably disposed around the first extension rod and is operable to move toward and sleeve around the first and second coupling ends such that the tubular fastener is engaged with the first coupling end and that the second coupling end is clamped between the first coupling end and the tubular fastener.