Spike Pin Local Quality Design for Winter Tire Grip
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional spike designs for pneumatic vehicle tires face challenges in achieving a balance between wear resistance, weight reduction, and secure anchoring, leading to increased road damage and reduced grip performance over the tire's lifespan.
Innovation Solution
The spike pin is designed with a layered structure, comprising an upper extension area made of high-abrasion-resistant, high-density material and a lower extension area made of lower-abrasion-resistant, lower-density material, with an intermediate layer of even lower density, allowing for reduced mass while maintaining high wear resistance and secure anchoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spike pin is made of high-density, high-abrasion-resistant material throughout its entire length, then wear resistance is improved, but road damage increases due to high spike mass
Solution Approach 1:
The spike pin is designed with different material densities in different regions: the upper extension area (exposed to road surface) uses high-density, high-abrasion-resistant material for wear resistance, while the lower extension area (embedded in tire) uses lower-density material to reduce overall mass and road damage, as this region does not contact the road surface and requires only anchoring function
Solution Approach 2:
The spike pin is constructed as a composite structure with at least two different powder-metallurgical materials having different densities, combining the advantages of high wear resistance in the exposed region with weight reduction in the embedded region, thereby reducing road damage while maintaining functional performance
2Reliability
If the embedding length of the spike pin in the tire is increased to improve secure anchoring, then retention is improved, but road damage increases due to increased spike mass
Solution Approach 1:
The lower extension area of the spike pin, which is embedded in the tire, is made of lower-density material since this region serves only for anchoring and does not require high abrasion resistance, thereby reducing overall mass and road damage while maintaining secure anchoring functionality
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
This design reduces road damage, enhances winter grip, and ensures secure spike retention throughout the tire's life by optimizing the conflicting goals of wear resistance and weight savings.
Implementation Method 1
the spike pin in the upper extension area consisting of a first powder-metallurgically produced or sintered part Material and in the lower extension area consists of a second material produced or sintered by powder metallurgy
Data Source
AI summary
Spike, which is introduced into a spike hole (5) in the tread of a pneumatic vehicle tyre and has a spike pin (2), which is held in the spike hole (5) and projects beyond the spike hole (5) or the surface of the tread, characterized in that the spike pin (2) consists along the extent thereof of at least one upper region of extent (11), which forms the spike tip (10) and comprises at least the part of the spike pin that projects beyond the spike hole (5) or the surface of the tread, and a lower region of extent (12), wherein the spike pin (2) consists in the upper region of extent (11) of a first, powder-metallurgically produced or sintered material and in the lower region of extent (12) of a second powder-metallurgically produced or sintered material, the first material having a greater abrasion resistance and a higher density than the second material.