Lamp Joint Assembly Slot Lock for Stepless Angle Rotation
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Solution Overview
Problem
Current assembly structures for lamps allow only two-step rotation, leading to looseness between inner and outer joint assemblies during rotation, preventing stepless and cyclic adjustment of lighting angles.
Innovation Solution
An assembly structure with a slot that requires a card part for locking and unlocking, utilizing distinct static friction forces to enable stepless and cyclic rotation of inner and outer joint assemblies, preventing looseness by ensuring the inner joint assembly can rotate relative to the outer when the card is not inserted, and locking/unlocking only when the card is present.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the inner joint assembly and outer joint assembly are designed to rotate relative to each other for adjusting lighting angle, then the lighting device can change lighting angle and brightness, but the assemblies may become loose from each other during rotation
Solution Approach 1:
A card part is introduced as an intermediary element between the inner and outer joint assemblies. The card part engages with a slot structure to provide lateral support and prevent the assemblies from loosening during rotation, while not interfering with the rotational adjustment function
Solution Approach 2:
The design allows dynamic switching between locked and unlocked states. When the card part is inserted, it enables stepless cyclic rotation with maintained connection stability. When removed, the assemblies can be easily disassembled for maintenance or reconfiguration
2Reliability
If a locking mechanism is provided to prevent looseness between inner and outer joint assemblies, then connection stability is improved, but the device complexity increases
Solution Approach 1:
The card part serves as a simple intermediary that plugs into a slot to provide lateral support. This avoids complex locking mechanisms while achieving the same reliability benefit of preventing assembly loosening during rotation
Solution Approach 2:
The card part is designed to be a simple, easily replaceable component that can be made from everyday materials. Its simplicity reduces manufacturing complexity while providing effective connection stability during the product's service life
3Adaptability or versatility
If the assembly structure allows stepless and cyclic rotation, then the lighting angle adjustment flexibility is improved, but the risk of looseness between assemblies increases
Solution Approach 1:
The card part acts as a mediator that enables stepless cyclic rotation while maintaining connection stability. It provides lateral support through the slot engagement, preventing loosening that would otherwise occur during continuous rotational adjustment
Solution Approach 2:
The system dynamically adapts its state based on card part insertion. When inserted, it permits stepless cyclic rotation with maintained stability. The design thus achieves high adaptability for lighting angle adjustment without sacrificing connection 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
Enables stepless and cyclic rotation of lighting devices, preventing looseness and allowing convenient assembly/disassembly using everyday items as card parts, ensuring secure locking and unlocking mechanisms.
Implementation Method 1
a third maximum static friction force that needs to be overcome when the core part assembly is rotated relative to the second case with the rotation axis is generated, wherein the third maximum static friction force is larger than the second maximum static friction force
Implementation Method 2
a first maximum static friction force to be overcome for rotating the core part assembly relative to the second case with the rotation axis is smaller than a second maximum static friction force to be overcome for locking or unlocking the second locking structure and the first locking structure by rotation
Data Source
AI summary
In order to solve the problem of loosening that may occur in the assembly structure of the prior art when the user wants to rotate the inner joint assembly to change the light angle of the lighting device installed in the inner joint assembly during the rotation process, an embodiment of the present disclosure provides an assembly structure with a slot. In the present disclosure, only when a card part is inserted into the slot, can the inner joint assembly and outer joint assembly be allowed to be locked with or unlocked from each other by rotation, otherwise only the inner joint assembly can be rotated relative to the outer joint assembly, but both of them cannot be locked with or unlocked from each other by rotation.