Model Car Gap Compensation Device for Magnetic Contact
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Solution Overview
Problem
Model cars experience travel disruptions due to varying clearances between their bottom surfaces and the panel surfaces, leading to inconsistent magnetic contact and wheel detachment, especially in uneven road zones, which prevents smooth movement.
Innovation Solution
A clearance compensation device that includes a guide part and a magnetic body, allowing for vertical and horizontal movement to maintain contact with the panel surface, ensuring continuous magnetic force and wheel contact, and features a fastening mechanism for easy attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the thickness of the attachment is increased to reduce clearance and increase magnetic force, then the magnetic force applied to the attachment is improved, but the wheels are separated from the panel surface causing them not to rotate and travel
Solution Approach 1:
The attachment is divided into two separate functional components: a magnetic body for magnetic interaction and a wheel support structure for mechanical support. This segmentation allows the magnetic body to be positioned closer to the panel for stronger magnetic force while the wheels remain properly supported and in contact with the panel surface, resolving the contradiction between magnetic force and wheel contact reliability
Solution Approach 2:
The magnetic body is extended in the vertical dimension (height) rather than increasing the overall attachment thickness. By positioning the magnetic body at the lower end of the attachment with sufficient height, the magnetic force is enhanced without causing the wheels to detach from the panel, as the extension occurs in a dimension that does not interfere with wheel support geometry
2Force
If the attachment is made too thick to increase magnetic force, then the magnetic force is improved, but the attachment is caught at road surface protrusions causing the model car to stop
Solution Approach 1:
Separating the magnetic body from the main attachment structure allows the magnetic body to be optimized for magnetic force while the attachment structure is optimized for smooth interaction with the road surface. The magnetic body can be positioned to engage with the magnetic field without the entire attachment being excessively thick, reducing the likelihood of catching on road surface irregularities
Solution Approach 2:
The magnetic body is designed with specific local properties (material composition, shape, positioning) that concentrate magnetic force generation at the critical interface with the panel, while the rest of the attachment structure maintains properties suitable for smooth road interaction. This local optimization of quality allows enhanced magnetic force without compromising smooth traveling
3Ease of manufacture
If a fixed thickness attachment is used, then the manufacturing process is simple, but the clearance varies due to design errors and process errors causing traveling problems
Solution Approach 1:
The attachment structure incorporates dynamic elements that allow adjustment or compensation for clearance variations. Rather than relying on a fixed thickness that must be precisely controlled, the design allows the attachment to adapt to varying clearances while maintaining reliable magnetic contact, reducing the impact of design and process errors
Solution Approach 2:
The attachment design uses asymmetric geometry where the magnetic body is positioned at the lower end with specific dimensional relationships that compensate for potential clearance variations. This asymmetric configuration provides tolerance to manufacturing errors by ensuring that even with variations in overall thickness, the critical magnetic interface maintains adequate contact
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
Ensures consistent magnetic contact and wheel rotation, allowing for realistic and continuous travel of model cars over varied surfaces, enhancing exhibition realism and user convenience.
Implementation Method 1
a magnet provided on one side to contact the model car on the surface of the panel by a magnetic force to move the model car along the runway
Data Source
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AI summary
A clearance compensation device for a model car according to an embodiment of the present invention comprises: a guide part which is provided on the bottom surface of the model car and has a guide rail formed along the vertical direction; a clearance compensation part which is provided to the guide part, has a bottom surface that is in contact with the upper surface of a panel having a runway formed therein, ascends and descends along the guide rail in response to the shape of the upper surface of the panel when the model car travels, and is configured to compensate for a clearance between the bottom surface of the model car and the upper surface of the panel so that the bottom surface is constantly in contact with the upper surface of the panel; and a magnetic body which is provided to the clearance compensation part and provided at the lower side of the panel with the panel therebetween to be coupled with the lead member movable in the horizontal direction by a magnetic force.According to the present invention, even when a clearance between the bottom surface of the model car and one surface of the panel is narrowed and widened due to the shape of the model car or the shape of the runway, the clearance is compensated for so that the magnetic body is constantly in contact with the upper surface of the panel. Accordingly, the magnetic force between the lead member and the magnetic body is constantly maintained by constantly maintaining the clearance between the magnetic body and the lead member, thereby improving the traveling performance of the model car.