Flexible Spring Coupling for Multi-Car Slot Track Motion
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Solution Overview
Problem
Conventional slot car racing systems allow only one car to be powered at a time, preventing multiple cars from running simultaneously due to the risk of collisions from differing wheel speeds.
Innovation Solution
A flexible sliding means, such as a spring or rod with open coils or detents, is placed in the track slot to engage the pin of a powered car, allowing additional non-powered cars to be positioned ahead or behind, creating the illusion of traffic flow when the powered car moves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple cars are powered simultaneously on the same track, then the quantity of moving vehicles increases, but the risk of collisions increases due to different wheel speeds
Solution Approach 1:
The system segments the power transmission function by designating only one car as powered while others are non-powered. The flexible spring/rod acts as a mechanical coupling that segments the motion transmission, allowing the powered car to drive the string without each car having its own motor, thus eliminating speed differential collisions
Solution Approach 2:
The flexible spring or rod serves as an intermediary mechanical coupling between the powered car and non-powered cars. This intermediary transmits motion from the powered car to subsequent cars through engagement with the guide pins, enabling coordinated movement without direct electrical connection or independent power sources
2Quantity of substance
If a flexible spring or rod is used to connect cars, then multiple cars can move simultaneously, but the device complexity increases
Solution Approach 1:
The patent employs a flexible spring or rod as a thin, flexible mechanical element that can bend and deform to accommodate the slot geometry. This flexible coupling allows multiple cars to be connected in a string configuration, enabling simultaneous movement while maintaining a relatively simple mechanical structure compared to multiple powered units
3Ease of operation
If the flexible spring has open coils, then it can engage the pin on the slot car, but the manufacturing precision requirements increase
Solution Approach 1:
The flexible spring with open coils provides a dynamic engagement mechanism where the coils can deform and adapt to slight variations in pin position and slot geometry. This dynamic flexibility allows reliable engagement without requiring extremely tight manufacturing tolerances, as the spring can accommodate minor misalignments through its elastic deformation
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
Enables multiple cars to move along the track simultaneously without collisions, enhancing the realism of toy vehicle racing and compatibility with model railroads or standalone automotive sets.
Implementation Method 1
a flexible spring or rod placed in the bottom of the slot, the flexible spring having open coils which engage the pin on the slot car
Data Source
AI summary
An elongated flexible open coil spring with spaced apart coils adapted to engage a guide pin on a slot car is placed in the slot of a model slot car track. Cars are positioned with their depending pins engaging the open coil spring to be carried around the track by a powered car held by and moving the open coil spring along the slot.