Solid Tire Rim Mounting Single Engagement Groove
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing wheel designs with solid tires and rims face difficulties in mounting due to the need to pull protrusions in and out of multiple grooves, making the process cumbersome and inefficient.
Innovation Solution
A wheel design where at most one engaging set of protrusion and groove is provided on the inner and outer contact surfaces in the mounting direction, allowing the tire to be easily mounted by pulling it over the rim without encountering additional grooves, and a tire with a reduced rubber base layer height and increased inner contact width for enhanced stability and load-bearing capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple engaging sets of protrusions and grooves are provided on the tire and rim, then the fixing position of the tire on the rim is improved, but the mounting process becomes more difficult and time-consuming
Solution Approach 1:
The patent removes unnecessary engaging sets from the mounting path. Only one engaging set is positioned such that the protrusion engages the groove in a single direct motion without requiring the tire to be pulled in and out of other grooves, thereby extracting the problematic intermediate engagement steps while maintaining secure fixation.
Solution Approach 2:
Instead of designing multiple grooves that require sequential engagement and disengagement, the patent inverts the approach by positioning a single groove and protrusion pair to achieve direct engagement. The mounting direction is optimized so that the tire moves in one continuous motion to engage the single set, eliminating the need for back-and-forth movements.
2Loss of substance
If the rubber base layer height is reduced, then the material used and friction are reduced, but the stability and load-bearing capacity may be compromised
Solution Approach 1:
The patent optimizes the height parameter of the rubber base layer to a reduced value that still maintains sufficient load-bearing capacity. By carefully selecting this parameter, the design achieves a balance between minimizing material usage and friction while preserving the necessary structural strength and stability for the application.
Solution Approach 2:
The patent concentrates the necessary structural properties in specific areas of the tire rather than uniformly throughout. The reduced base layer is compensated by localized reinforcement or optimized geometry in critical load-bearing regions, allowing material reduction overall while maintaining strength where needed.
Data Source
AI summary
A wheel (1) comprising a solid tire (2) and a rim (3), the solid tire (2) comprising a rubber base layer (4) with a reduced height (16) extending in circumferential direction of the tire (2), an inner circumferential contact surface (8) of the rubber base layer (4) being provided to contact an outer circumferential contact surface (9) of the rim (3), the solid tire (2) upon mounting to the rim (3) being provided to be pulled over the circumferential outer contact surface (9) of the rim (3) along a mounting direction at least partly running along an axial direction of the tire (2), characterized in that for each position on the outer contact surface (9) of the rim (3) and the inner contact surface (8) of the tire (2), in mounting direction of the tire (2), at most one engaging set (10) of the protrusion (11) and the corresponding groove (12) is provided.