Tire Inner Layer Patch for Static Imbalance Correction
Solution Overview
Problem
Pneumatic vehicle tires often suffer from static imbalance due to uneven material distribution during manufacturing, which existing correction methods like grinding or adding weight to the rim are inefficient or aesthetically undesirable, and introducing patches increases production complexity.
Innovation Solution
A patch composed of a rubber composition containing liquid rubbers and solid rubbers, applied to the inner layer of the tire, which reduces or eliminates static imbalance without increasing production complexity, as the materials are standard components of tire construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual grinding is used to correct static imbalance, then some imbalance correction is achieved, but additional manual effort is required and health hazards are created
Solution Approach 1:
The invention extracts the imbalance correction function from the tire manufacturing process itself and applies it as a separate patch component. Instead of modifying the entire tire through grinding, a discrete patch is applied to counterbalance the uneven weight distribution, separating the correction function from the main manufacturing process
Solution Approach 2:
The patch uses liquid rubber material that changes from a liquid state during application to a solid state after vulcanization. This parameter change allows the patch to be easily applied in liquid form and then becomes a durable solid correction element, eliminating the need for manual grinding operations
2Manufacturing precision
If weight is added to the rim to compensate for imbalance, then static imbalance is corrected, but the visual appearance of the tire and rim is affected
Solution Approach 1:
The invention applies local quality by placing the correction mass directly on the inner layer of the tire at the specific location where imbalance occurs, rather than adding visible weight to the external rim. This localized approach corrects the imbalance while keeping the external appearance unchanged
Solution Approach 2:
The patch is nested within the tire structure by applying it to the inner layer, which is then vulcanized to bond with the tire. This nesting approach hides the correction element within the tire itself, preventing any visual impact on the external appearance
3Manufacturing precision
If patches are placed in the tire to compensate for imbalance, then static imbalance is corrected, but production complexity increases due to additional materials
Solution Approach 1:
The liquid rubber material serves multiple functions: it acts as the patch material for imbalance correction, functions as an adhesive to bond with the tire inner layer, and undergoes vulcanization to become a permanent structural element. This multi-functionality eliminates the need for separate adhesive materials and reduces production complexity
Solution Approach 2:
The patch is made from composite rubber material that combines liquid rubber with reinforcing fibers or fillers. This composite structure provides both the flowability needed for application and the strength needed for durability, while using materials that are already standard in tire manufacturing
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 patch effectively corrects static imbalance by being self-adhesive and easily applied, maintaining tire aesthetics and simplicity in manufacturing, with adjustable tackiness and heat stability based on the liquid to solid rubber ratio.
Implementation Method 1
The presence of at least one patch which contains one or more liquid rubbers and one or more solid rubbers on the side of the gas-tight inner layer which faces the rim in the vulcanized and mounted pneumatic vehicle tire
Implementation Method 2
A pneumatic vehicle tire in radial design with a gas-tight inner layer... in the vulcanized and mounted pneumatic vehicle tire
Data Source
AI summary
The invention relates to a pneumatic vehicle tyre of a radial design having a gas-tight inner layer which is characterized in that the gas-tight inner layer side, which layer faces the rim in the case of a vulcanized and mounted pneumatic vehicle tyre there is at least one patch which contains one or more liquid rubbers and one or more solid rubbers.