Non-Pneumatic Tire Rim With Detachable Flange And Pins
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Solution Overview
Problem
Non-pneumatic tires face challenges in maintaining stable attachment to the rim during high-speed driving due to centrifugal forces, leading to slipping or separation, and excessive adhesion makes removal difficult.
Innovation Solution
A rim design featuring a cylindrical rim wall with protrusions or grooves, a detachable rim flange, and a fastening unit with pins to securely attach the non-pneumatic tire without adhesives, allowing for easy removal and stable fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a surface adhesive is used to attach the non-pneumatic tire to the rim, then the tire can be easily installed, but the tire slips or separates during high-speed driving due to centrifugal force
Solution Approach 1:
The rim is divided into a rim wall portion and a rim flange portion that can be detachably connected. The fixing member is separated into components that can be independently positioned and secured, allowing the tire to be firmly attached while maintaining ease of installation through modular assembly
Solution Approach 2:
The rim flange portion is designed to be detachably connected to the rim wall portion via fastening pins, transforming the static adhesive bond into a dynamic mechanical connection that can be easily assembled and disassembled while providing reliable fixation during operation
2Reliability
If adhesive is excessively applied between non-pneumatic tire and rim, then the tire is firmly attached, but it becomes difficult to remove the tire for replacement
Solution Approach 1:
The attachment system is segmented into discrete mechanical components (fixing member, rim flange, fastening pins) that can be independently assembled and disassembled, eliminating the need for excessive adhesive while providing firm attachment during use and easy removal when needed
Solution Approach 2:
The adhesive bonding function is extracted and replaced with a mechanical fastening system using fixing members and fastening pins, which provide secure attachment during operation but can be easily removed for tire replacement without the complications of excessive adhesive
3Reliability
If a fixing member is disposed spaced apart from the rim wall portion, then the non-pneumatic tire is stably fixed, but the structural complexity increases
Solution Approach 1:
The fixing member is integrated with the rim flange portion through detachable connection, merging the functions of tire fixation and rim structure into a unified system that achieves stable tire fixation without significantly increasing overall structural complexity
Solution Approach 2:
The fixing member is positioned in the radial direction spaced apart from the rim wall portion, utilizing the radial dimension to achieve stable tire fixation while maintaining a compact axial profile that minimizes structural complexity
Data Source
AI summary
A rim for a non-pneumatic tire comprises a cylindrical rim wall portion, and a fixing member disposed to be spaced apart from the rim wall portion in a radial direction. The rim wall portion is provided with a fixing protrusion protruding in the radial direction or a fixing groove depressed in the radial direction.