Downlight Hook Slot Elastic Locking Mechanism
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Solution Overview
Problem
Existing downlight apparatuses face challenges in robust installation and convenient replacement, with high manufacturing costs due to complex connection structures and the need for efficient assembly processes.
Innovation Solution
A downlight apparatus design featuring a major housing with multiple hook slots and hooks, where the hooks are bent to fit into corresponding slots with an elastic shape change, providing a secure and tool-free attachment to the ceiling, and a modular structure with a detachable main cup and surface ring for easy assembly and waterproofing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional connection structures are used for fixing downlight apparatuses to ceilings, then robust fixation is achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
The connection structure is segmented into separate hook components and corresponding slots in the housing. The hooks are detachable metal pieces that insert into molded slots, dividing the fixation function into modular elements that are easier to manufacture and assemble than a monolithic connection structure.
Solution Approach 2:
The hook-slot connection structure is designed to be self-fixing through elastic deformation. The hooks elastically deform during insertion and then lock into place automatically without requiring additional fasteners, tools, or complex assembly procedures, achieving robust fixation through the inherent elastic properties of the metal hooks.
2Strength
If traditional fixed connection structures are used, then installation robustness is improved, but ease of operation for replacement deteriorates
Solution Approach 1:
The connection structure transitions from a static, permanently fixed design to a dynamic, reversible system. The hooks can be easily inserted and removed from their slots, allowing the downlight apparatus to be conveniently replaced while maintaining robust fixation during normal operation. This dynamic capability enables tool-free installation and replacement.
Solution Approach 2:
By segmenting the connection into detachable hooks and slots, the system enables easy separation and reassembly. The hooks can be independently removed from the housing slots, facilitating convenient replacement of the downlight apparatus without requiring destruction or complex disassembly procedures.
3Reliability
If complex connection structures are used, then fixation reliability is improved, but manufacturing cost increases
Solution Approach 1:
The elastic hooks perform multiple functions automatically: they provide structural strength, enable self-assembly during insertion, and create a reliable locked connection without requiring additional fasteners, adhesives, or specialized manufacturing processes. This self-service capability reduces part count and manufacturing complexity while maintaining fixation reliability.
Solution Approach 2:
The material properties of the hooks, particularly their elastic characteristics, are optimized to achieve the desired fixation reliability. By selecting appropriate metal materials and designing the hook geometry to utilize elastic deformation, the system achieves reliable fixation with simple, inexpensive components that can be mass-produced through standard metal forming processes.
4Ease of manufacture
If simple hook structures are used, then manufacturing cost is reduced, but fixation strength deteriorates
Solution Approach 1:
The fixation strength is achieved not through complex structure but through optimization of material parameters and geometric parameters of the simple hook design. The elastic modulus, yield strength, and dimensional parameters of the hooks are carefully selected to ensure adequate fixation strength while maintaining manufacturing simplicity and low cost.
Solution Approach 2:
The simple hook structure utilizes elastic deformation to automatically generate the necessary fixation force during insertion and removal. This self-generating mechanical advantage allows simple, inexpensive hooks to achieve fixation strength comparable to more complex structures, eliminating the need for additional reinforcement or complex geometry.
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
This design simplifies production, reduces costs, enhances safety, and facilitates automatic assembly, while ensuring robust fixation and waterproofing, making it suitable for mass production and easy installation.
Implementation Method 1
When the bottom hook is inserted into the hook slot, the bottom hook has an elastic shape change to enter the hook slot. When the bottom hook is inserted, the bottom hook is locked by a stop structure of the hook slot.
Data Source
AI summary
A downlight apparatus has a major housing, multiple hook slots, and multiple hooks. The major housing has a surface ring and a main cup. The main cup contains a LED plate and a driver circuit. The LED plate emits light through an opening of the surface ring. The multiple hook slots are located surrounding the main cup. The multiple hooks have bottom hooks inserted and locked in corresponding hook slots respectively and have top hooks to fix the major housing on a ceiling.