Rotatable Lens Assembly With Press-Fit Stops for Camera Adjustment
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Solution Overview
Problem
Existing video cameras require complex manual adjustments for lens direction, particularly in the P-direction, which involves removing a transparent cover, making the process cumbersome.
Innovation Solution
A video camera design featuring a rotatable lens assembly with a press-fitted protrusion mechanism, allowing P-direction adjustment without removing the upper shell assembly, utilizing teeth engagement for easy operation and reliable locking, and an elastic sealing ring for water prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the transparent cover is removed from the lens assembly to adjust the lens in P-direction, then the lens can be adjusted, but the operation becomes complicated and time-consuming
Solution Approach 1:
The adjustment mechanism is segmented into modular components: the upper shell assembly with first protrusion, the lower shell assembly with second protrusion, and the lens assembly. This segmentation allows the upper shell to be rotated independently relative to the lower shell for P-direction adjustment without removing any covers, while maintaining structural integrity through the protrusion-protrusion connection.
Solution Approach 2:
The connection between the upper shell assembly and lower shell assembly is made dynamic through the rotatable protrusion mechanism. The first protrusion can rotate relative to the second protrusion within the press-fit connection, enabling the lens assembly to adjust in P-direction dynamically without disassembly, transforming a static fixed connection into a dynamically adjustable one.
2Ease of operation
If the lens assembly is made rotatable in P-direction for easy adjustment, then operational ease is improved, but the risk of water entering the lens assembly increases
Solution Approach 1:
An elastic sealing ring is introduced as a flexible sealing element between the lens assembly and the base. This elastic ring can deform to accommodate the rotatable movement of the lens assembly in P-direction while maintaining continuous water sealing, preventing water intrusion during adjustment operations.
Solution Approach 2:
The elastic sealing ring acts as an intermediary element between the rotatable lens assembly and the stationary base. It mediates the rotational movement while maintaining the water barrier, allowing the lens assembly to rotate without compromising the water seal that would otherwise be broken by the movement.
3Manufacturing precision
If the protrusion mechanism is used to limit rotation of the lens assembly, then positioning precision is improved, but the structure becomes more complex
Solution Approach 1:
The first protrusion and second protrusion are designed with asymmetric tooth configurations. The first protrusion has teeth on one side while the second protrusion has corresponding teeth positioned to engage only in one rotational direction. This asymmetric design provides precise unidirectional positioning and limiting functionality while keeping the structural complexity relatively low through simple gear-like tooth profiles.
Data Source
AI summary
Disclosed is a video camera, comprising a lens assembly, an upper shell assembly and a lower shell assembly. The upper shell assembly covers the lens assembly. The lens assembly is fixedly connected to the upper shell assembly, and both the lens assembly and the upper shell assembly are provided on the lower shell assembly so as to be rotatable in P-direction. The upper shell assembly is provided with a first protrusion, and the lower shell assembly is provided with a second protrusion, and the first protrusion and the second protrusion are press-fitted to each other so as to limit the rotation of the lens assembly in P-direction relative to the lower shell assembly. The rotation adjustment of the lens in P-direction can be realized by directly detaching the first protrusion from the second protrusion without removing the upper shell assembly from the lens assembly, which is convenient to operate.