Movable Partition Chain Tensioner with Front-Access Adjustment
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Solution Overview
Problem
Movable partition systems face malfunctions due to improper chain tension, which can result in either loose engagement or excessive stress leading to component failure, making it difficult to maintain and install these systems effectively.
Innovation Solution
A chain tensioner device with adjustable mechanisms located on the side of the endplate facing the partitioned space, allowing for easy access and adjustment of chain tension by manipulating a threaded nut and carriage member along an elongated rod, ensuring proper tension without requiring access to the back side of the endplate or vertical surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the chain tension adjustment mechanism is located on the back side of the endplate or vertical surface, then the chain tension can be adjusted, but the access to the adjustment mechanism becomes difficult and increases installation and maintenance time
Solution Approach 1:
The patent inverts the conventional location of the tension adjustment mechanism from the back side of the endplate to the front side facing the partitioned space. This allows easy access to the adjustment mechanism without requiring disassembly or access to hard-to-reach areas, directly resolving the contradiction between adjustability and accessibility.
Solution Approach 2:
The tension adjustment mechanism is designed to be easily accessible and operable by users without requiring specialized tools or technical expertise. The mechanism can be adjusted by end-users during installation and maintenance, eliminating the need for professional service intervention and reducing downtime.
2Ease of manufacture
If the chain is too loose, then the system can be easier to assemble, but the sprocket may not properly engage the chain causing malfunction
Solution Approach 1:
The patent incorporates a preliminary tensioning feature that allows the chain to be easily assembled in a loose state and then tensioned to the proper level after installation. This preliminary action separates the assembly process from the tensioning process, allowing easy assembly followed by proper engagement adjustment.
Solution Approach 2:
The tensioner device provides dynamic adjustment capability, allowing the chain tension to be modified after installation. This enables the system to transition from a loose assembly state to a properly tensioned operational state, ensuring reliable sprocket-chain engagement while maintaining assembly ease.
3Reliability
If the chain is too tight, then the sprocket engagement is improved, but excessive stress causes component failure
Solution Approach 1:
The patent employs a tensioner device with adjustable parameters that allow precise control of chain tension. By providing incremental adjustment capability, the system can achieve optimal tension levels that ensure proper sprocket engagement without exceeding the stress limits of chain and sprocket components.
Solution Approach 2:
The tensioner device incorporates features that provide feedback on chain tension levels, allowing operators to adjust the tension to the appropriate level. This feedback mechanism prevents over-tensioning that would cause excessive stress and component failure while maintaining reliable engagement.
4Reliability
If an adjustable tensioner device is added to the system, then chain tension can be properly controlled, but the device complexity increases
Solution Approach 1:
The tensioner device is segmented into distinct functional components: a mounting bracket, an adjustable tensioning mechanism, and a securing feature. This segmentation allows each component to perform its specific function independently, simplifying the overall design while maintaining reliable tension control capability.
Solution Approach 2:
The patent introduces a simple intermediary tensioner device that mediates between the chain and the endplate. This intermediary component provides the necessary tension control function without requiring complex mechanisms, bridging the gap between fixed installation points and the need for adjustable chain tension.
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 simplifies the adjustment and maintenance of chain tension, reducing time, effort, and costs associated with installing and maintaining movable partition systems by providing easier access to the tension adjustment mechanism, thereby preventing malfunctions and improving system reliability.
Implementation Method 1
manipulating a threaded nut and carriage member along an elongated rod
Data Source
AI summary
Tensioner devices for use with movable partition systems include endplates configured to be mounted on opposing sides or ends of a movable partition. At least one of the endplates includes a bracket configured for attachment to an end of a chain or a belt. The bracket is movable relative to the endplate. The endplate having the bracket also includes an adjustment mechanism located on a common side of the endplate with the bracket, and is operably coupled with the bracket. The adjustment mechanism is configured for adjusting a distance separating the bracket from the endplate. Movable partition systems include such tensioner devices. Methods of adjusting a tension in a chain or a belt of a movable partition system involve the use of such a tensioner device. Methods of installing movable partition systems within structures include the installation of such tensioner devices.