Car Model Metal Inner Structure Axle Protection
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Solution Overview
Problem
Conventional car type models made of resin are easily damaged and lack protection for the wheel axles, leading to poor durability and instability, as the resin body fails to securely position and protect the wheel axles from bending.
Innovation Solution
A car type model featuring a metal inner structure that supports and protects the wheel axles, allowing them to rotate freely, while also increasing the model's weight to provide a more substantial feel, with the metal inner structure being made of zinc die-cast alloy and the chassis and car body made of resin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the car type model is made of resin, then the production cost is reduced and the manufacturing is simplified, but the model is easily damaged and exhibits poor durability
Solution Approach 1:
The patent employs a composite structure combining resin and metal materials. The car body is made of resin for cost-effective manufacturing and aesthetic appearance, while the wheel axles are made of metal for strength and durability. This composite approach allows each material to be used where it provides the most benefit, resolving the contradiction between ease of manufacture and reliability.
2Device complexity
If the wheel axle is arranged within the resin car body, then the structure is simplified, but the wheel axle cannot be protected from bending and cannot be positioned firmly
Solution Approach 1:
The patent applies local quality by making the wheel axles specifically metal rather than uniformly resin throughout the entire car body. This localized material selection ensures that the critical components (wheel axles) have the necessary strength and positioning stability, while the rest of the car body maintains the benefits of resin construction.
3Strength
If the wheel axle is made of metal, then the strength and protection from bending is improved, but the weight of the model increases
Solution Approach 1:
The patent implements local quality by using metal only for the wheel axles where strength is critical, rather than making the entire car body metal. This selective material usage provides the necessary strength and protection from bending at the wheel axle components while minimizing the overall weight increase of the model.
Data Source
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AI summary
The present disclosure relates to a car type model comprising an inner structure formed of a metal, a chassis formed of a resin and a wheel axle formed of a metal. The chassis is attached to the inner structure, and the wheel axle is arranged between the chassis and the inner structure. The inner structure and the chassis are configured to keep the wheel axle in a position.