Eccentric Idler Pulley Fixing Device for Stable Belt Positioning
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Solution Overview
Problem
Existing idler pulleys lack a reliable method to fix and adjust to defined positions, which complicates the mounting of traction mechanisms and can lead to instability in the drive system.
Innovation Solution
A fixing device comprising a setting eccentric and fastening means with radially or axially oriented extensions that cooperate with stops to securely position the idler pulley, allowing for adjustable and cost-effective mounting and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a setting eccentric is provided for adjusting the idler pulley position, then the adaptability of the idler pulley is improved, but the device complexity increases due to the need for additional fastening means and fixing mechanisms
Solution Approach 1:
The fastening means is merged with the setting eccentric by integrating the radial extension directly into the eccentric structure. This combination eliminates the need for separate fastening components while maintaining the ability to adjust and fix the idler pulley position through the integrated radial extension and stop mechanism.
Solution Approach 2:
The setting eccentric is designed to perform multiple functions: it serves as both the adjustment mechanism for changing the idler pulley position and as the fastening mechanism through its radial extension that engages with stops. This multi-functionality reduces the overall number of components needed in the system.
2Stability of the object's composition
If a fixing device with radial extensions and stops is implemented, then the stability of the idler pulley in defined positions is improved, but the manufacturing complexity increases
Solution Approach 1:
The radial extension is integrated directly into the setting eccentric structure, combining the positioning function with the existing eccentric component. This integration eliminates the need for separate fixing components, reducing the number of parts to manufacture while maintaining stable positioning through the extension-stop engagement.
3Adaptability or versatility
If multiple stops are provided on the setting eccentric, then the number of defined positions increases, but the device complexity increases
Solution Approach 1:
The setting eccentric features an asymmetric profile with multiple stops positioned at different angular locations around the rotation axis. This asymmetric design allows the single eccentric component to provide multiple discrete positioning options as it rotates, enabling the idler pulley to be fixed at several different positions without requiring multiple separate fastening mechanisms.
Data Source
AI summary
An idler pulley (1) of a traction mechanism drive, on which a traction mechanism (24), such as a belt or chain, is guided, and which idler pulley is adjustable via an adjusting eccentric (5) and can be fastened to a machine part (2) in conjunction with a fastening means (8). The adjusting eccentric (5) and the fastening means (8) together form a fixing device (17) with which at least one end position of the adjusting eccentric (5) and consequently of the idler pulley (1) can be defined. For this purpose, the fixing device (17) comprises at least one lug (15) which is oriented radially or axially and interacts with at least one stop (16) of the associated further component.