Tire Mounting Hook Linkage for Rim-Safe Bead Removal
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Solution Overview
Problem
Existing tire removal and mounting devices are complex, requiring fluid dynamic actuators and mechanical articulations, leading to potential inaccuracies and risks of damaging rims due to wear and contact issues.
Innovation Solution
A simplified device with a manual or automatic drive mechanism using a mixtilinear trajectory for the hook movement, eliminating the need for fluid dynamic actuators and mechanical articulations, allowing precise operation without rim damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fluid dynamic actuators and mechanical articulations are used to move the hook, then the device can achieve tire removal and mounting function, but the device complexity increases and the risk of rim damage increases due to wear clearances
Solution Approach 1:
The patent extracts and eliminates the fluid dynamic actuator and complex mechanical articulation elements from the device. Instead, it uses a simple hook that can be manually or automatically moved along a predetermined trajectory, removing the problematic components that caused complexity and wear issues while maintaining the essential function of tire removal and mounting
Solution Approach 2:
The hook is designed to move along a predetermined trajectory that automatically ensures it does not contact the rim edge during operation. This self-guiding mechanism eliminates the need for complex control systems and articulation elements, allowing the device to perform its function while inherently preventing rim damage through its own movement path design
2Ease of operation
If fluid dynamic actuators and mechanical articulations are used to move the hook, then the device can achieve tire removal and mounting function, but the manufacturing cost increases
Solution Approach 1:
The patent removes the expensive fluid dynamic actuator and complex mechanical articulation components, replacing them with a simpler hook mechanism that can be moved along a predetermined trajectory. This extraction of unnecessary components directly reduces manufacturing costs while maintaining operational capability
Solution Approach 2:
The invention replaces expensive, complex, and maintenance-prone components with a simpler, more durable hook mechanism. The simplified design uses fewer parts that are easier and cheaper to manufacture, eliminating the need for costly actuators and articulation elements that require precision manufacturing and frequent maintenance
3Duration of action of stationary object
If wear clearances are generated between components' joints over time, then the device can operate for extended periods, but the measurement precision of hook movement deteriorates leading to rim damage risk
Solution Approach 1:
The patent eliminates the mechanical articulation elements and joints that are susceptible to wear clearances. By removing these components, the device avoids the precision deterioration problem entirely, as there are no joints to wear down over time, thereby maintaining hook movement precision throughout the device's operational life
Solution Approach 2:
The hook follows a predetermined trajectory that is designed to prevent rim contact. This self-guiding approach ensures that even as the device operates for extended periods, the precision of hook movement is maintained because the trajectory is inherently built into the device's simple structure, not dependent on wear-free joints
Data Source
AI summary
The device for removing and mounting tires from/onto rims (C) includes: a hook able to be introduced between a bead of a tire and an edge of a rim (C) on which the tire is mounted; means for moving the hook alternatively between a position external to the bead and the edge of the rim (C) and an inserted position, according to a trajectory (T) of movement over the edge without contact, and including: first connecting rod means for dragging the hook; second connecting rod means for guiding the hook; driving means rotatably integral with the first connecting rod means by means of a transverse pin.