Lever-Shaped Tire Dismounting Tool With Elastic Locking
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Solution Overview
Problem
Existing tire disassembling devices are complex to manufacture and require operator control, making them inefficient for large-sized wheels, and previous solutions are not always suitable for lorry wheels.
Innovation Solution
A structurally simple and cost-effective tire dismounting device with a lever-shaped tool articulated to a support member, featuring elastic locking means and pivoting mechanisms that allow angular displacement between insertion and extraction positions, driven by reaction forces from the wheel and tire, eliminating the need for actuators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a complex machine with actuators and control systems is used for tire disassembling, then automation and precision are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The disassembling tool is designed to automatically perform the tire dismounting operation through its own mechanical structure. The lever-shaped tool with hook-shaped end engages the tire bead and uses the reaction forces from the tire and wheel to automatically pivot between insertion and extraction positions, eliminating the need for external actuators and control systems.
Solution Approach 2:
The invention extracts and eliminates the complex actuator and control system components from the disassembling device. By removing these unnecessary elements, the device becomes simpler while still achieving the desired automation through the tool's inherent mechanical design that utilizes reaction forces.
2Device complexity
If a simple lever-shaped tool is used for tire disassembling, then device complexity is reduced, but holding and positioning precision may worsen
Solution Approach 1:
The support member is divided into distinct functional segments: a holding portion with parallel sides that engages the lever-shaped tool, and an interception element that works in conjunction with a corresponding element on the tool. This segmentation allows each part to perform its specific function of securing the tool in the extraction position.
Solution Approach 2:
The interception element on the support member and the corresponding element on the lever-shaped tool form a nested locking mechanism. When the tool pivots to the extraction position, these elements interlock to securely hold the tool, providing precise positioning without adding overall device complexity.
3Manufacturing precision
If elastic loading means are added to the lever-shaped tool, then holding precision is improved, but device complexity increases
Solution Approach 1:
The elastic loading means is integrated directly into the lever-shaped tool as a unified component. The first element engages the tire bead while the second element engages the interception element on the support member, with the elastic loading means providing continuous holding force. This merging eliminates the need for separate holding mechanisms.
4Ease of operation
If the tool is designed to pivot automatically using reaction forces, then ease of operation is improved, but control precision may worsen
Solution Approach 1:
The disassembling tool automatically pivots between insertion and extraction positions by utilizing the reaction forces generated during the dismounting operation itself. The force applied to engage the tire bead creates a moment that automatically rotates the tool about its articulation axis, making the operation self-controlling and eliminating the need for external actuators.
Solution Approach 2:
The reaction forces from the tire and wheel during the dismounting operation provide natural feedback to the system. As the tool engages the tire bead and applies force, the resulting reaction forces automatically drive the tool through the required motion sequence, ensuring precise positioning through force feedback rather than mechanical control.
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 efficient, rapid, and easy dismounting of large-sized tires without the need for complex machinery or operator control, ensuring the tool securely engages and extracts the tire bead from the wheel rim.
Implementation Method 1
holding means for holding the tool in engagement and extraction position, having an interception element carried either by the support member or the disassembling tool and arranged to intercept the tool or the support member, respectively, when the disassembling tool reaches the engagement and extraction position
Implementation Method 2
a bill or lever-shaped dismounting tool having one end thereof articulated to the support member, and the other work end thereof substantially hook-shaped, whereby the dismounting tool can be angularly displaced between a first insertion position between the bead and wheel rim edge, and a second tire bead engagement and extraction position
Data Source
AI summary
The present invention relates to a device for dismounting a tired wheel having a wheel rim and a tire mounted on the wheel rim, including:a support member,a bill or lever-shaped dismounting tool having one end thereof articulated to the support member, and the other work end thereof substantially hook-shaped, andholding means for holding the tool in an engagement and extraction position, the holding means including an elastically loaded pin.