Automobile Wheel Spoke Rigidity Balance via Protruding Reinforcing Plate
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing two-piece automobile wheel design suffers from imbalance in rigidity between the proximal and distal ends of the spoke portions, leading to reduced overall rigidity due to deformation in the stepped coupling portions between the side edge and circular-arc plate portions.
Innovation Solution
The design incorporates spoke projecting threads with a mountain shape cross-section, a reinforcing plate portion that protrudes from the outer edge of the spoke projecting threads, and inter-spoke plate portions, which are coupled to form a continuous plate surface, enhancing rigidity by reducing deformation and maintaining cooling performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the circular-arc plate portion is formed to be dented to the back side with respect to the outer end of the side edge portion, then the stepped coupling is achieved, but deformation easily occurs in the stepped portion and rigidity is reduced on the distal end side of the spoke portion
Solution Approach 1:
The invention adds a protruding plate portion that extends in the wheel widthwise direction from the outer edge of the spoke projecting thread. This creates a three-dimensional reinforcement structure that compensates for the rigidity reduction caused by the stepped coupling, thereby resolving the contradiction between ease of manufacture and strength.
2Strength
If the side edge portion is coupled to the coupling portion at the hub mounting portion, then high rigidity is obtained on the proximal end side of the spoke portion, but rigidity imbalance occurs between proximal and distal ends
Solution Approach 1:
The invention applies local reinforcement by adding the protruding plate portion specifically at the distal end side of the spoke portion where rigidity is reduced. This localized structural modification creates rigidity balance between the proximal and distal ends without affecting the overall spoke design, resolving the contradiction between proximal end rigidity and overall rigidity balance.
Data Source
AI summary
Each spoke portion includes spoke projecting threads on both sides thereof, and a reinforcing plate portion is formed so as to protrude from a side edge of each of the spoke projecting threads outward in a spoke widthwise direction. The reinforcing plate portion is formed continuously with an inter-spoke plate portion extended from a fitting portion of a disc flange portion to a wheel radially inner side, and forms an integral plate surface with the inter-spoke plate portion. With this configuration, it is possible to reduce imbalance of rigidity of the spoke portion in a radial direction, and to increase rigidity of an automobile wheel.