Directional Lighting Ball Joint With Twist-Resistant Wiring
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Solution Overview
Problem
Existing directional lighting devices suffer from undesired twisting of electric wiring when the lamp housing is rotated 360°, leading to potential rupture and electrical hazards due to short circuits.
Innovation Solution
A directional lighting device with a ball-joint structure that maintains the light emitting source stationary relative to the lamp housing, using a mounting plate retained by a retaining spring and a cup-shaped tensioning element with a tensioning spring, along with a flexible wiring sleeve to prevent twisting and entrapment of electric wiring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lamp housing is rotated 360° around the ball joint, then the lighting device achieves full directional adjustment capability, but the electric wiring twists and risks rupturing causing electrical hazards
Solution Approach 1:
The patent employs a flexible wiring sleeve that envelops the electric wiring, allowing it to flex and move without twisting or rupturing. This flexible protective sheath enables the wiring to accommodate the 360° rotation of the lamp housing while maintaining electrical integrity and preventing hazards.
Solution Approach 2:
The flexible wiring sleeve acts as an intermediary protective layer between the electric wiring and the rotational movement of the lamp housing. It mediates the mechanical stress and twisting forces, allowing the wiring to move with the housing rotation without direct contact with harmful mechanical forces.
2Reliability
If the light emitting source is mounted stationary relative to the lamp housing, then the wiring does not twist during rotation, but the housing cannot be directed independently
Solution Approach 1:
The patent divides the lighting device into functionally independent segments: the lamp housing with the light emitting source mounted stationary relative to it, and the ball joint structure that provides rotational movement. This segmentation allows the housing to rotate for directional adjustment while the stationary mounting of the light source prevents wiring twisting.
Solution Approach 2:
The flexible wiring sleeve serves as an intermediary that decouples the rotational movement of the housing from the electrical connections. It allows the housing to rotate for directional control while protecting the wiring from twisting, thus maintaining both adaptability and reliability.
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
Prevents wire twisting and rupture during 360° rotation, thereby avoiding electrical hazards such as short circuits, while allowing smooth orientation and direction of the lamp housing.
Implementation Method 1
a tensioning spring (20) mounted between the cup-shaped tensioning element (21) and the mounting plate (18). The clamping of the cup-shaped tensioning element on the ball surface of the ball-joint structure is effected by the retaining spring element fitted in the circumferential slot provided in the inner circumferential surface of the housing.
Data Source
AI summary
The disclosure proposes an improved directional lighting device (10) comprising a supporting structure (11); a ball-joint structure (12) mounted to the supporting structure (11); a housing (13) configured to accommodate a light emitting source (14); electric wiring (15) fed from the supporting structure (11) through the ball-joint structure (12) and electrically connecting the light emitting source (14); the ball-joint structure (12) configured to direct the housing (13) relative to the supporting structure (11) and the light emitting source (14).