Lighting Fixture Diffuser With Sliding Keyed Lock for Replacement
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Solution Overview
Problem
Existing lighting fixtures require replacement of the entire unit when the lampshade needs to be changed, leading to increased costs.
Innovation Solution
A lighting fixture design featuring a diffuser that can be easily installed or detached from a mounting base using an installation key, allowing the diffuser to switch between locked and unlocked states for convenient replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lampshade is fixed to the mounting base, then the lighting fixture is stable and reliable, but the lampshade cannot be replaced without replacing the entire fixture
Solution Approach 1:
The lighting fixture is divided into separable components: the mounting base and the lampshade (diffuser). The mounting base includes a mounting portion with a locking groove, while the lampshade has a mounting portion with a locking portion that fits into the groove. This segmentation allows the lampshade to be replaced independently without replacing the entire fixture, resolving the contradiction between replaceability and structural complexity.
2Reliability
If a locking mechanism is added to secure the lampshade, then the fixation reliability is improved, but the installation and removal operations become more complex
Solution Approach 1:
The locking mechanism is designed to be self-operating through a simple rotational action. The installation key engages with the locking groove and locking portion, and when rotated, automatically locks or unlocks the lampshade without requiring additional tools or complex operations. This self-service mechanism maintains high fixation reliability while keeping installation simple.
3Ease of manufacture
If the entire fixture is replaced when the lampshade needs changing, then the structural simplicity is maintained, but the cost and waste increase
Solution Approach 1:
The fixture is segmented into a reusable mounting base and a replaceable lampshade. The mounting base remains in place while only the lampshade is replaced when needed. This segmentation prevents the entire fixture from being discarded, reducing material waste and lowering replacement costs while maintaining manufacturing simplicity.
Solution Approach 2:
The design enables selective discarding of only the worn or damaged lampshade while recovering and retaining the mounting base. This approach minimizes material loss and reduces the frequency of complete replacements, addressing the contradiction between manufacturing simplicity and waste reduction.
Data Source
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AI summary
This application provides a lighting fixture (100) including a first diffuser (10), a mounting base (20) and an installation key (30). The first diffuser (10) includes a mounting portion (11) connected to the mounting base (20) through cooperation of a locking portion (114) and a locking groove (204). Either mounting portion (11) or mounting base (20) is provided with a locking notch (115), and the installation key (30) can slide relative to mounting portion (11). In a locked state, the installation key (30) is positioned at locking notch (115), locking portion (114) is positioned in locking groove (204), and the first diffuser (10) is locked to the mounting base (20). In an unlocked state, the installation key (30) disengages from locking notch (115), allowing mounting portion (11) to rotate about mounting base (20) to disengage locking portion (114) from locking groove (204) and first diffuser (10) is unlocked from mounting base (20). The first diffuser (10) can be installed on or detached from the mounting base (20) through the installation key (30), making installation convenient.