Spindle Rim Locking Mechanism with Elastic Extraction
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Solution Overview
Problem
Existing spindle systems for tire changing machines require significant time and physical effort to lock the rim, often resulting in ineffective clamping and complex structural designs.
Innovation Solution
A spindle system with a rotatable supporting structure, a tubular holding element, and a movable locking mechanism with elastic lifting means and quick coupling, allowing for easy and secure rim locking with minimal operator effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pin with locking cone is screwed inside the hole on the flange to lock the rim, then the rim can be locked on the flange, but the operation requires significant time and physical effort
Solution Approach 1:
The patent replaces the manual screwing operation with a mechanical extraction system. A pin with extracting elements is inserted through the flange hole, and these extracting elements engage with grooves on the pin to automatically draw the locking cone against the rim, eliminating the need for manual screwing and significantly reducing locking time while maintaining secure attachment.
Solution Approach 2:
The locking mechanism is designed to be self-actuating. Once the pin is inserted through the flange hole, the extracting elements automatically engage with the grooves and the cone is drawn against the rim without requiring additional manual operations. The system performs the locking action itself rather than requiring continuous operator intervention.
2Reliability
If a pin with locking cone is screwed inside the hole on the flange to lock the rim, then the rim can be locked on the flange, but the operation requires significant physical effort from the operator
Solution Approach 1:
The patent replaces the manual screwing operation with a mechanical extraction system. A pin with extracting elements is inserted through the flange hole, and these extracting elements engage with grooves on the pin to automatically draw the locking cone against the rim, eliminating the need for manual screwing and significantly reducing locking time while maintaining secure attachment.
3Ease of operation
If actuating means are added to the pin to enable automatic locking, then the locking operation becomes simpler, but the device becomes structurally complex
Solution Approach 1:
The extracting elements are integrated within the pin structure itself, with the grooves formed directly on the pin body. The pin with extracting elements is inserted through the flange hole, and the cone is drawn against the rim through this integrated mechanism. This nesting approach provides automatic locking functionality without adding separate external actuating devices, thereby maintaining structural simplicity.
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
Enables fast, simple, and effective rim locking with reduced operator effort, overcoming the limitations of existing systems by providing a rational and affordable solution.
Implementation Method 1
elastic means, interposed between said movable element and said supporting structure, able to lift said movable element towards said raised position and able to counteract the displacement of said movable element towards said lowered position
Data Source
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AI summary
The upgraded spindle (1) for garage equipment machines, particularly for tire changing machines or the like, comprises a supporting structure (2) having at least a resting element (3) for a rim (C) of a wheel (D) for vehicles, rotation means (6) of the resting element (3) around at least an axis of rotation (B) and locking means (7) of the rim (C) on the resting element (3), with the locking means (7) comprising: - a movable element (8) having an extremal portion (9) projecting with respect to the resting element (3) and able to be inserted within a through hole on the rim (C), - a retaining element (10) of the rim (C) associated with the extremal portion (9), - a stop element (20) of the movable element (8) having a through hole (21) in which is inserted an elongated section (12) of the movable element (8), the stop element (20) being rotatable between a sliding position and a stopping position, and - operation means (22) of the stop element (20) between the sliding position and the stopping position; wherein: - the elongated section (12) comprises a toothing (40) having a plurality of housing concavities (41); and - the walls of the through hole (21) comprise a positioning element (42) able to be coupled to the housing concavities (41) in predefined positions of the movable element (8).