Modular Lighted Tree Trunk Coupling Without Rotational Alignment
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Solution Overview
Problem
Existing artificial trees with complex lighting systems are difficult to assemble and power due to the increased weight and complexity of multiple light strings, requiring intricate manipulation and handling of tree sections, and existing solutions fail to provide effective mechanical and electrical connection methods for larger, heavier trees.
Innovation Solution
A modular lighted artificial tree design featuring trunk portions with integrated wiring and connectors that allow for easy mechanical and electrical coupling along a common vertical axis, independent of rotational orientation, simplifying the assembly and power distribution of multiple tree sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple light strings are distributed throughout the tree to enhance decorative quality, then the lighting coverage and decorative effect are improved, but the weight of the tree increases making it difficult to lift and align individual trunk sections
Solution Approach 1:
The tree is divided into multiple detachable trunk sections, each containing a portion of the light strings and wiring. This segmentation allows the tree to be assembled in sections, reducing the weight handling difficulty while maintaining full lighting coverage when complete.
Solution Approach 2:
The light strings and wiring are nested within the trunk sections and branches, with wires clipped to branch structures and plugs distributed throughout the branches. This nesting integrates the lighting system into the tree structure, distributing weight throughout rather than concentrating it.
2Illumination intensity
If the number of light strings is increased to enhance decorative quality, then the lighting coverage is improved, but the complexity of interconnecting and powering the light strings increases significantly
Solution Approach 1:
A universal power distribution system is implemented where each trunk section contains power outlets that can accept any light string plug. This multi-functional interface allows any light string to be connected to any trunk section, simplifying the interconnection process regardless of the number of light strings used.
Solution Approach 2:
The trunk sections serve as intermediaries that contain power outlets and wiring infrastructure. These intermediaries manage the complexity of power distribution by providing standardized connection points, eliminating the need for direct end-to-end connections between all light strings.
3Strength
If traditional bayonet fitting or threaded connections are used to join tree sections, then mechanical connection is achieved, but rotational alignment is required which complicates the assembly process
Solution Approach 1:
The connection interface uses asymmetric geometry where the upper trunk section has a protrusion that fits into a recess in the lower section. This asymmetric design provides both mechanical strength and automatic alignment, eliminating the need for rotational alignment while maintaining a secure connection.
4Illumination intensity
If power plugs are stacked and multiple extension cords are used to power light strings, then all light strings can be powered, but the complexity of finding and connecting plugs increases
Solution Approach 1:
Power outlets and wiring are pre-installed within each trunk section during manufacturing. This preliminary action eliminates the need for consumers to stack plugs and manage extension cords, as power is already distributed to each section and light strings can be directly connected to outlets in their respective trunk sections.
Data Source
AI summary
A lighted artificial tree includes a first tree portion including a first trunk portion, first branches joined to the first trunk portion, and a first light string. The first trunk portion has a trunk connector and a first trunk wiring assembly, the first trunk wiring assembly is electrically connectable to the first light string and the trunk connector, and at least a portion of the first wiring assembly is located inside the first portion. The second tree portion includes a second trunk portion, second branches, and a second light string. The second trunk portion has a trunk connector and a second trunk wiring assembly, the second trunk wiring assembly electrically connectable to the second lighting string and the trunk connector. The second tree portion may be mechanically coupled and electrically connected to the first tree portion by coaxially coupling the first trunk portion to the second trunk portion.