Adjustable Light Fixture Sealing for Tilt Angles
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Solution Overview
Problem
Adjustable light fixtures face challenges in meeting environmental standards, particularly in terms of sealing and positioning, especially when required to tilt beyond 20°, as existing solutions often fail to maintain airtight and watertight seals while allowing for adjustable angles.
Innovation Solution
An adjustable light fixture design featuring a housing with a sealing member and a body that can tilt beyond 20°, where the sealing member abuts the body's outer surface in various positions, ensuring fluid and contaminant prevention through a combination of materials like rubber and metal, and coupling features for secure mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the light fixture body is made adjustable to tilt beyond 20°, then the adaptability and ease of operation are improved, but the sealing reliability deteriorates because existing seals cannot maintain airtight and watertight conditions at extreme angles
Solution Approach 1:
The patent employs a flexible membrane seal that can deform and conform to the body's outer surface at various tilt angles. This flexible sealing member is coupled to the housing and maintains contact with the body across the range of motion, preventing fluid infiltration even when the body tilts beyond 20° relative to the housing.
Solution Approach 2:
The sealing system is designed to be dynamic rather than static, allowing the sealing member to move and adjust its position as the body tilts. The seal maintains effectiveness throughout the full range of motion by adapting its configuration to the body's orientation, ensuring continuous sealing reliability across all operating positions.
2Reliability
If a rigid sealing structure is used to ensure airtight and watertight conditions, then the sealing reliability is improved, but the ease of operation deteriorates because the body cannot be adjusted to different angles
Solution Approach 1:
Instead of a rigid seal, the patent uses a flexible membrane that can bend and deform to accommodate the body's movement. This flexible seal maintains the airtight and watertight barrier while allowing the body to rotate and tilt freely within the housing, resolving the conflict between sealing integrity and adjustability.
Solution Approach 2:
The sealing system changes its physical parameters (shape, position, orientation) in response to the body's movement. The flexible seal adapts its configuration dynamically, maintaining sealing effectiveness across the full range of tilt angles without restricting the body's adjustability.
3Reliability
If multiple sealing members are added to maintain seals at all angles, then the sealing reliability is improved, but the device complexity increases
Solution Approach 1:
The patent employs a single universal sealing member that performs the sealing function across the entire range of motion. This multi-functional seal replaces what would otherwise require multiple separate seals for different angular positions, simplifying the overall structure while maintaining reliable sealing at all tilt angles.
Solution Approach 2:
The flexible membrane seal's ability to deform allows one seal to replace multiple rigid seals. The single flexible sealing member can conform to the body's outer surface at any angle, eliminating the need for multiple sealing components and reducing device complexity while maintaining sealing reliability throughout the full range of motion.
Data Source
AI summary
An adjustable light fixture can include a housing comprising at least one wall that forms a first cavity. The adjustable light fixture can also include a first sealing member coupled to the at least one wall and at least partially disposed within the first cavity. The adjustable light fixture can further include a body movably coupled to the housing and at least partially disposed within the first cavity, where the body is configured to have multiple positions relative to the housing, where the first sealing member abuts against an outer surface of the body when the body is in each of the positions, where the first sealing member prevents fluids in an ambient environment from traversing therethrough when the body is in each of the positions, where the positions includes the body having a tilt angle relative to the housing of greater than 20°.