Integrated Vehicle Wheel Molding to Prevent Tube Loosening
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional child carrier vehicle wheels experience loosening of tire casings and inner tubes over time, leading to reduced stability, and the rubber materials used can cause blooming and contact staining issues, resulting in black marks on the ground.
Innovation Solution
A method for manufacturing a vehicle wheel involving the formation of a tire casing by curing and molding a first material, followed by the centrifugal injection of a second material to form an inner tube, with negative-pressure air exhaust performed during the curing process to enhance the connection between the tire casing and the inner tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional rubber materials are used for tire casing and inner tube, then the manufacturing process is simple and cost-effective, but the materials are prone to loosening over time and cause blooming and contact staining
Solution Approach 1:
The patent uses thermoplastic polyurethane for the tire casing and ethylene-vinyl acetate copolymer for the inner tube, replacing conventional rubber materials. This composite material approach resolves the contradiction by providing both reliable connection stability and resistance to blooming and contact staining, while maintaining ease of manufacture through injection molding and centrifugal injection processes
2Reliability
If the tire casing and inner tube are manufactured separately and assembled, then the manufacturing process is simple, but the connection between them loosens over time reducing stability
Solution Approach 1:
The patent combines the tire casing and inner tube into a single integrated component manufactured through a unified process. The tire casing is first formed by injection molding, then the inner tube is formed by centrifugal injection directly into the tire casing's receiving groove, and both are cured together as one piece. This merging eliminates assembly steps and ensures permanent connection stability without increasing manufacturing complexity
Solution Approach 2:
The patent performs preliminary action by first forming the tire casing with a pre-designed receiving groove that accommodates the inner tube. This preliminary structure preparation ensures that when the inner tube is subsequently formed by centrifugal injection, it automatically achieves proper positioning and connection, eliminating the need for separate assembly operations and ensuring connection stability
3Reliability
If negative-pressure air exhaust is performed during inner tube formation, then the connection between tire casing and inner tube is enhanced, but the manufacturing process becomes more complex
Solution Approach 1:
The patent applies pneumatics by performing negative-pressure air exhaust during the inner tube formation process. The exhaust holes in the mold create negative pressure that draws out air and volatile substances from the curing inner tube material, enhancing the connection between the tire casing and inner tube. This pneumatic approach enhances connection strength without significantly increasing manufacturing process complexity
Solution Approach 2:
The negative-pressure air exhaust process accelerates the curing and oxidation of the inner tube material by removing air pockets and volatile substances during formation. This accelerated oxidation enhances the chemical bonding and connection strength between the tire casing and inner tube, while the process is integrated into the existing manufacturing workflow without major complexity increases
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 provides improved stability and prevents the inner tube from loosening within the tire casing, while also addressing the blooming and staining issues by using materials like thermoplastic polyurethane and ethylene-vinyl acetate copolymer, which offer better wear resistance and reduced contact staining.
Implementation Method 1
At least during a process of forming the inner tube by curing, negative-pressure air exhaust is performed
Implementation Method 2
forming an inner tube by centrifugally injecting a second material into the receiving groove and curing and molding the second material
Data Source
AI summary
The present disclosure relates to a vehicle wheel and a method for manufacturing a vehicle wheel. The method includes: forming a tire casing by curing and molding a first material, where the tire casing has a receiving groove; forming an inner tube by centrifugally injecting a second material into the receiving groove and curing and molding the second material; and removing the tire casing and the inner tube as a whole. At least during a process of forming the inner tube by curing, negative-pressure air exhaust is performed.