Ball Pan-Tilt Locking Structure for Low-Force Lamp Adjustment
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Solution Overview
Problem
Existing pan-tilt structures for lighting devices require excessive physical effort for adjustment and fixation due to increased weight and power of lamps, leading to unstable fixation and inefficient angle adjustments.
Innovation Solution
A pan-tilt structure with a locking mechanism featuring a transmission assembly with a ratio greater than 1, allowing for a smaller input force to achieve the necessary torque for locking and unlocking, utilizing a ball and locking member with a first and second locking portion, and a driving member connected through an adjustment assembly and transmission assembly to adjust the distance between these portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a traditional brake disc principle is used on the U-shaped bracket to fix the lamps, then the structure is simple, but the user needs to consume a lot of physical strength and the fixation is unstable
Solution Approach 1:
A transmission assembly is introduced as an intermediary mechanism between the handle and the locking member. This transmission assembly includes a first transmission wheel and a second transmission wheel that work together to amplify the user's input force, reducing the physical strength needed to operate the locking mechanism while maintaining structural simplicity
Solution Approach 2:
The locking member is designed with a deformation gap that allows it to dynamically adjust and deform under load. This dynamic characteristic enables the locking member to better adapt to the ball's position and maintain stable fixation with reduced operating force, resolving the contradiction between simple structure and ease of operation
2Power
If the power and volume of the lamps increase, then the lighting capability is improved, but the weight increases making adjustment difficult
Solution Approach 1:
The transmission assembly acts as a force amplifier that compensates for the increased weight of high-power lamps. By incorporating the transmission ratio greater than 1, the system reduces the effort required to adjust and position heavier lighting devices, maintaining ease of operation despite increased lighting power
Solution Approach 2:
The locking mechanism is segmented into distinct functional components: the locking member with deformation gap, the transmission assembly with multiple wheels, and the handle. This segmentation allows each component to be optimized independently, enabling the system to handle heavier lamps efficiently while keeping the adjustment mechanism manageable
3Ease of operation
If the transmission ratio of the transmission assembly is greater than 1, then the effort required for locking and unlocking is reduced, but the device complexity increases
Solution Approach 1:
The locking member incorporates a deformation gap that provides dynamic adaptability. This dynamic feature allows the locking member to automatically adjust to the ball's position and loading conditions, compensating for the added complexity of the transmission assembly and enabling easier operation without requiring overly complex mechanisms
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 solution reduces the effort required for locking and unlocking the ball, enhancing the stability and efficiency of angle adjustments, allowing for easier handling of heavier lighting devices.
Implementation Method 1
a transmission ratio of the transmission assembly is greater than 1
Implementation Method 2
the adjustment rod is provided with a threaded connection portion and an abutment portion, the threaded connection portion is threadedly connected to the first locking portion
Implementation Method 3
the first transmission wheel is a first gear, the second transmission wheel is a second gear configured to be meshed with the first gear
Implementation Method 4
a ball, arranged on the support surface
Data Source
AI summary
The present application disclosed a pan-tilt structure and a lighting device, and the pan-tilt structure includes a base, a ball, a ball sleeve, and a locking mechanism, a side of the base is provided with a support surface; the ball is arranged on the support surface; the ball sleeve includes a locking member connected to the base, the locking member is arranged around the ball, and the locking member is provided with a first locking portion and a second locking portion that are arranged in an extending direction along the locking member, and an adjustment gap is provided between the first locking portion and the second locking portion and configured for disconnecting the locking member; an adjustment assembly of the locking mechanism is connected to the first locking portion and the second locking portion.