Tyre Bead Seating Tool for Quiet Rim Inflation
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Solution Overview
Problem
Existing tyre inflation methods using tyre changing apparatuses result in loud noises and potential damage due to the impact of tyre beads against rim flanges, which are harmful to operators and may damage equipment, and require complex systems when bypassing the inflation valve.
Innovation Solution
A method and apparatus that utilize a tool positioned between the tyre bead and rim flange to absorb the impact and control the force of the bead's movement into the seat, using an elastic element and sound-absorbing materials to minimize noise and damage, while maintaining pressure equilibrium through an actuator system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the tyre bead is allowed to move freely into the seat during inflation, then the inflation process is simple and quick, but the bead strikes the flange with great force causing loud noise and potential damage
Solution Approach 1:
A tool is introduced as an intermediary element positioned between the tyre bead and the rim flange during inflation. This tool absorbs the impact of the bead as it moves into the seat, preventing direct striking against the flange. The tool is subsequently removed after the bead is properly seated, allowing the inflation process to complete without damage or excessive noise.
Solution Approach 2:
The tool is positioned in advance before inflation begins, creating a cushioning effect that will absorb the upcoming impact of the bead. By preparing this protective element beforehand, the system prevents the harmful impact from occurring in the first place, rather than trying to mitigate it after the fact.
2Reliability
If an inflation probe is positioned between the rim and tyre to hold the bead down, then the probe prevents crushing, but the probe must be made of very strong material to resist crushing forces
Solution Approach 1:
Instead of using a robust inflation probe as the intermediary, a lighter tool is introduced that serves the same mediating function of holding the bead down during inflation. This tool does not need to withstand the full crushing forces itself, as its primary role is to provide a surface for the bead to rest against, thereby simplifying material requirements.
Solution Approach 2:
The solution replaces the need for a mechanically strong inflation probe with a simpler tool that achieves the same protective effect through different means. Rather than relying on the probe's structural strength to prevent bead crushing, the system uses the tool's positioning and the bead's own elasticity to achieve the same result.
3Productivity
If the tool is removed too early during inflation, then the inflation process is faster, but the bead will strike the flange causing noise and damage
Solution Approach 1:
The system incorporates monitoring to detect when the bead has properly engaged with the seat. This feedback mechanism allows the control system to determine the optimal moment to remove the tool - precisely when the bead is securely positioned and will no longer strike the flange. This ensures the tool remains in place just long enough to prevent damage while minimizing its presence in the inflation process.
4Object-affected harmful factors
If sound-absorbing materials are used on the tool, then noise is reduced, but the tool design becomes more complex
Solution Approach 1:
Sound-absorbing materials are applied only to specific local areas of the tool that are in direct contact with or near the bead and flange interface - the primary noise generation zone. Rather than covering the entire tool, the acoustic treatment is concentrated where it is most needed, reducing overall noise while minimizing the addition of complexity to the tool's overall design.
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
The solution effectively reduces noise and potential damage by controlling the bead's movement into the seat, improving operational safety and simplifying the inflation process by maintaining pressure equilibrium and using sound-absorbing materials.
Implementation Method 1
a tool (38)... comprising an elastic element (38B)... effectively reduces noise and potential damage by controlling the bead's movement into the seat
Implementation Method 2
using an elastic element and sound-absorbing materials to minimize noise and damage
Data Source
AI summary
A method for inflating a tyre mounted on a corresponding wheel rim comprises the following steps in sequence; placing a tool at an operating position, where a first bead of the tyre is interposed between the tool and a second bead of the tyre, and one end of tool is positioned axially between a first flange of the rim and a first rib of the rim and positioned radially between an outside surface of the rim and a tread of the tyre; blowing a gas under pressure through an inflation valve of the tyre into a chamber delimited by the tyre and by the rim, with the tool at the operating position, so that the first sidewall of the tyre is pressed against the end of the tool; removing the tool from the operating position.