Tiltable Luminaire Joint for Precise Wide-Range Positioning
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Solution Overview
Problem
Existing luminaire joints are either mechanically complex, expensive, or have limitations in range and accuracy of positioning, making them unsuitable for adaptable lighting applications.
Innovation Solution
A tiltable joint design featuring interengaging surfaces and shaft portions that allow for precise angular adjustment over a wide range, with a fixation mechanism that ensures stability and protection of the adjustment mechanism, enabling on-site or factory adjustments for optimal light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional joints are used for lighting apparatuses, then the structure is simple, but the positioning accuracy and adjustment range are limited
Solution Approach 1:
The joint is divided into multiple independent components: a first joint portion with interengaging surfaces, a second joint portion with receiving surfaces, shaft portions for rotation, and fixation means. This segmentation allows each component to perform a specific function, achieving precise positioning through the coordinated interaction of simple individual parts rather than a single complex structure.
Solution Approach 2:
The first joint portion is housed within the second joint portion, creating a nested configuration. The joint member with outer cylindrical surface is received within the joint housing with inner cylindrical surface. This nesting arrangement protects the adjustment mechanism while enabling precise angular positioning through the interengaging surfaces of the nested components.
2Measurement precision
If adjustable joints are designed with multiple components, then the positioning accuracy improves, but the manufacturing cost increases
Solution Approach 1:
The interengaging surfaces on the joint member and receiving surfaces on the joint housing serve multiple functions: they enable precise angular positioning, provide mechanical support through the nested configuration, allow for adjustable range of motion, and can be integrated with fixation means for securing the position. This multi-functionality reduces the need for separate components, simplifying manufacturing despite the precision requirements.
3Adaptability or versatility
If existing joints allow rotation, then the adaptability improves, but the mechanical complexity and cost increase
Solution Approach 1:
The joint incorporates shaft portions that enable dynamic rotation between the first and second joint portions, allowing the lighting apparatus to be adjusted to various angles. The fixation means provides a mechanism to lock the dynamic position once adjusted. This dynamic capability is achieved through simple rotational movement constrained by the interengaging surfaces rather than complex mechanical linkages.
Data Source
AI summary
Example embodiments relate to tiltable luminaire joints. One example tiltable joint for a luminaire includes a first joint portion that includes a joint member provided with an outer cylindrical surface section having an axis and opposing bearings aligned with said axis. The outer cylindrical surface section being provided with a first plurality of interengaging surfaces. The tiltable joint also includes a second joint portion that includes a joint housing provided with a pair of axially-aligned receiving surfaces, and an inner cylindrical surface provided with a second plurality of interengaging surfaces configured to interengage the first plurality of interengaging surface. The joint member of the first joint portion is configured for being housed within the joint housing of the second joint portion. Further, the tiltable joint includes first and second shaft portions that extend in alignment with the pair of axially-aligned bearings. Additionally, the tiltable joint includes a fixation means.