Adjustable Chassis for Junk Models with Elastic Band Propulsion
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Solution Overview
Problem
Existing junk modeling techniques face challenges in creating dynamic models that can move across surfaces without complex mechanisms, particularly for children, as conventional designs are not specifically tailored for junk modeling and lack efficient propulsion systems.
Innovation Solution
An adjustable chassis apparatus with elongate members, surface engaging elements like wheels, and an elastic band drive system that allows for selective adjustment and propulsion of junk models, enabling them to move freely and efficiently over surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional joining methods (adhesive, tape) are used to assemble junk model parts, then the model can be constructed, but the model cannot move across surfaces effectively
Solution Approach 1:
The patent transforms the static junk model into a dynamic moving model by incorporating a wheel assembly with an elastic band propulsion system. The elastic band is wound around a spool connected to the wheel axle, and when released, it unwinds to rotate the wheel and propel the model forward, enabling effective movement across surfaces while maintaining simple assembly from junk materials
2Ease of operation
If complex propulsion mechanisms are used to enable model movement, then the model can move across surfaces, but the complexity increases making it difficult for children to construct
Solution Approach 1:
The propulsion system is designed to be self-contained and easy to operate - the child simply winds the elastic band around the spool by rotating the wheel, then releases it to propel the model. This self-service mechanism eliminates the need for complex external power sources, batteries, or motors, making it accessible to children while achieving effective movement
Solution Approach 2:
The patent replaces complex electrical or motorized propulsion systems with a simple elastic potential energy storage and release mechanism. The elastic band stores mechanical energy when wound and converts it to kinetic energy during unwinding, driving the wheel without requiring batteries, motors, or complex control systems
3Adaptability or versatility
If fixed-length chassis members are used, then the structure is simple, but it cannot accommodate differently sized junk model bodies
Solution Approach 1:
The chassis members are designed with adjustable length capability through a telescopic or sliding mechanism that allows the parent or child to extend or retract the chassis length to match the size of different junk model bodies, providing versatility while maintaining relatively simple construction from common materials
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
The solution enables children to create and propel junk models in a simple, repeatable, and efficient manner, supporting various model sizes and surfaces, while being child-friendly and adaptable to different environments.
Implementation Method 1
an elastic band having a first end region and a second end region, said capturing element capturing said second end region of said elastic band when the wheel is rotated in a first direction
Data Source
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AI summary
The present invention provides apparatus for building a junk model, comprising an elongate member (118) attachable to a junk model body (106) and having a first end region and a second end region; a first attachment portion (130) for attaching a first surface engaging element (114) to the first end region; and a second attachment portion (132) for attaching a second surface engaging element (116) to the second end region; wherein the elongate member is selectively adjustable in length to set a distance between the first attachment portion and the second attachment portion. A kit of parts and method of building a junk model are also provided.