Dome Camera Cam Latch Yoke Friction Locking
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Solution Overview
Problem
The existing pan rotation mechanisms in domed cameras often allow excessive twisting, leading to stress on wires and inadequate locking of the optical module, particularly due to non-uniform thickness caused by draft angles in the yoke's design, which results in inconsistent clamping force and potential misalignment.
Innovation Solution
A gimbal pan assembly with a yoke and gimbal base that includes a cam latch to create friction, allowing over 360-degree pan rotation while effectively locking the optical module in place, utilizing a disk and tab mechanism to ensure secure positioning and prevent excessive rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a yoke with draft surfaces is used to allow pan rotation, then the optical module can rotate more than 360 degrees, but the non-uniform thickness causes inadequate locking and excessive twisting
Solution Approach 1:
The patent applies local quality by creating a localized uniform thickness region in the yoke at the clamping position, while other portions of the yoke may have varying thickness to accommodate draft angles for manufacturing. This localized uniformity ensures consistent clamping force and reliable locking without sacrificing the overall pan rotation capability.
Solution Approach 2:
The patent changes the thickness parameter of the yoke from non-uniform to uniform at the critical clamping region. This parameter modification ensures that the clamping force is distributed evenly across the optical module, preventing excessive twisting and improving locking reliability while maintaining the ability to rotate more than 360 degrees.
2Strength
If the yoke thickness is increased to improve locking, then clamping force is enhanced, but the draft angle requirement for manufacturing is compromised
Solution Approach 1:
The patent applies local quality by creating a localized uniform thickness region in the yoke at the clamping position, while other portions of the yoke may have varying thickness to accommodate draft angles for manufacturing. This localized uniformity ensures consistent clamping force and reliable locking without sacrificing the overall pan rotation capability.
Solution Approach 2:
The patent segments the yoke into different functional regions: a clamping region with uniform thickness for reliable locking, and other regions with draft angles for ease of manufacturing. This segmentation allows each region to optimize its properties independently, resolving the contradiction between clamping force and manufacturability.
3Object-affected harmful factors
If locking mechanism is added to prevent excessive rotation, then wire stress is reduced, but device complexity increases
Solution Approach 1:
The patent applies self-service by designing the yoke with inherent friction properties that automatically limit pan rotation without requiring external locking mechanisms. The uniform thickness design creates consistent friction that naturally prevents excessive rotation and wire stress, keeping the device simple while protecting against harmful effects.
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
The solution provides secure and consistent pan rotation with enhanced locking capabilities, reducing wire stress and ensuring precise alignment of the optical module, thereby improving the durability and reliability of the camera's field of view adjustments.
Implementation Method 1
The cam latch is configured to push against the disk to create friction to lock the yoke from pan rotating
Data Source
AI summary
A dome camera mechanism for an improved gimbal pan assembly which stops further rotation of an optical module of the dome camera in a pan direction using a cam latch.