Video Camera Belt Tensioner with Orthogonal Locking Adjustment
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Solution Overview
Problem
Existing video camera belt tensioning systems fail to apply accurate and adjustable tension, leading to belt slippage and reduced functionality due to reliance on springs that cannot handle all slackening cases, resulting in cumbersome and inflexible designs.
Innovation Solution
A device with a belt tensioner terminal, an elastic thrust element, and an adjustable constraint element that allows for orthogonal movement, enabling precise tension adjustment and maintenance without replacing the belt, housed in a compact structure suitable for video camera assemblies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring-based automatic tensioning mechanism is used, then the belt can be kept tensioned during operation, but the tension magnitude cannot be precisely controlled and significant slackening cannot be adequately handled
Solution Approach 1:
The tensioning system is segmented into multiple independent components: a fixed pulley, a movable pulley, and a spring mechanism. This segmentation allows the fixed pulley to provide stable structural support while the movable pulley handles tensioning adjustments, enabling precise control over tension magnitude separately from the overall reliability function.
Solution Approach 2:
The system employs a movable pulley that can dynamically adjust its position along the belt to compensate for slackening. This dynamic adjustment capability, combined with the spring's elastic force, allows the system to maintain reliable tension while enabling precise control over the tension magnitude through the pulley's position rather than relying solely on spring elasticity.
2Ease of manufacture
If a rigid belt tensioning structure is used, then the system is simple to manufacture, but it cannot be modified to deal with significant belt slackening
Solution Approach 1:
The system transforms a rigid structure into a dynamic one by introducing a movable pulley that can slide along the belt. This simple modification maintains manufacturing simplicity while providing adaptability to handle significant slackening, as the movable pulley can reposition itself to accommodate belt length changes without requiring complex adjustable mechanisms.
Solution Approach 2:
The movable pulley serves multiple functions: it provides structural support like a fixed pulley, enables tensioning adjustments by repositioning, and compensates for belt slackening. This multi-functionality allows a single component to address both manufacturing simplicity and adaptability requirements.
3Device complexity
If the burden of tensioning is completely transferred to the spring, then the system is simple, but it cannot deal with all possible slackening cases and entities
Solution Approach 1:
The tensioning burden is segmented between the spring and the movable pulley. The spring provides continuous elastic force to maintain tension, while the movable pulley handles position adjustments for different slackening magnitudes. This segmentation allows the system to remain simple while covering all slackening cases.
Solution Approach 2:
The movable pulley acts as an intermediary between the spring's elastic force and the belt tensioning requirement. It translates the spring's continuous force into adjustable tension levels by repositioning along the belt, enabling the system to handle various slackening magnitudes without increasing overall complexity.
4Measurement precision
If a complex belt tensioner assembly is used, then precise tension control might be achieved, but the system becomes cumbersome and complicated to implement
Solution Approach 1:
The system merges the functions of tensioning, positioning, and slackening compensation into a single integrated pulley-spring mechanism. This consolidation achieves precise tension control through the interaction of simple components rather than through a complex assembly of separate adjustment mechanisms.
Solution Approach 2:
The movable pulley automatically adjusts its position along the belt in response to tension changes, eliminating the need for manual intervention or complex control mechanisms. The spring's elastic force automatically compensates for slackening, providing self-regulating tension control that is both precise and simple.
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 reliable and adjustable belt tensioning, reducing maintenance needs and preventing belt slippage, allowing for simple tension adjustments by users, thus enhancing the operational reliability and longevity of video camera systems.
Implementation Method 1
a thrust element operating on the belt tensioner terminal for thrusting the belt tensioner terminal against the belt, wherein the thrust element is of elastic type
Data Source
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AI summary
The present invention relates to a device (12) for tensioning a belt (11) of a video camera assembly (1). The device (12) comprises a belt tensioner terminal (17) and a thrust element (19) of elastic type operating on the belt tensioner terminal (17) for thrusting the belt tensioner terminal (17) against the belt (11). The device (12) further comprises an adjustment element (24) configured for determining an adjustable positioning of the belt tensioner terminal (17) with respect to the belt (11) and at least one constraint element (21) configured for operating between a rest condition, wherein it does not constrain the positioning of the belt tensioner terminal (17), and a constraint condition, wherein it constrains in position the belt tensioner terminal (17). The adjustment element (24) is configured for being operatively connected to the thrust element (19) in a removable way. Advantageously, the thrust element (19) and the adjustment element (24) share a same operative direction, said at least one constraint element (21) operating or developing along a direction which is orthogonal to said operative direction of the thrust element (19) and of the adjustment element (24).