Rollable Toy Car with Segmented Gear-Driven Transformation
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Solution Overview
Problem
Rollable toy cars face rolling obstructions due to their inability to transform into a shape more conducive for rolling, as the assembled form often results in unfavorable contact with surfaces, leading to sticking issues.
Innovation Solution
A rollable toy car design featuring a car body composed of interconnected first, second, and third car bodies with rotating frames and actuating gears that transform into a circular-ring shape, allowing smooth rolling by ensuring the rolling frames enclose the car body, reducing obstruction and enhancing rolling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the toy car is assembled into a compact form, then the rolling capability is improved, but the car body structure becomes complex with multiple components
Solution Approach 1:
The car body is divided into three separate car bodies (first, second, and third) that can be independently positioned and connected. This segmentation allows each car body to be optimally configured for rolling while maintaining overall structural integrity, resolving the contradiction between compact rolling form and structural complexity.
Solution Approach 2:
The rolling frames are designed with curved surfaces that enclose the car bodies, creating a more aerodynamic and roll-friendly shape. This curvature optimization improves rolling capability by reducing contact resistance with the ground, while the modular car body design prevents excessive structural complexity.
2Shape
If the car body is assembled into a compact form, then the rolling shape is improved, but the contact with ground surface becomes unfavorable causing sticking
Solution Approach 1:
Curved rolling frames are designed to enclose the car bodies, creating a smooth, rounded external shape that favors rolling motion. This curvature ensures favorable contact with the ground surface, preventing sticking while maintaining the compact assembled form.
Solution Approach 2:
The rolling frames are specifically designed with different surface characteristics at different locations - the external curved surfaces are optimized for ground contact and rolling, while the internal structures maintain the compact car body configuration. This localized optimization resolves the contradiction between rolling shape and ground contact quality.
3Productivity
If multiple car bodies are connected to form a compact structure, then the rolling efficiency is improved, but the transformation mechanism becomes complex
Solution Approach 1:
The transformation mechanism is segmented into modular components, with each car body having its own actuating device and gear system. This modular approach allows independent transformation of each car body segment, improving rolling efficiency through coordinated motion while preventing excessive overall mechanism complexity.
Solution Approach 2:
The transformation mechanism employs dynamic, movable connections between car bodies rather than fixed joints. This allows the structure to adapt its configuration during transformation, enabling efficient rolling assembly while keeping the mechanism flexible and manageable in complexity.
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 transformation actuating device enables the car body to curl into a shape suitable for rotation, preventing rolling obstructions by ensuring the rolling frames are preferentially in contact with the ground, thus ensuring smooth movement and reducing the likelihood of the toy car getting stuck.
Implementation Method 1
The transformation actuating device includes a transformation actuator arranged on the second car body, a transformation actuating gear connected with the transformation actuator, a first gear set that is arranged on the second car body and is connected with the first car body, and a third gear set that is arranged on the second car body and is connected with the third car body; and the first gear set and the third gear set are respectively meshed with the transformation actuating gear.
Implementation Method 2
The transformation actuator actuates the first car body to rotate by means of the first gear set; the transformation actuator actuates the third car body to rotate by means of the third gear set; and a first rolling frame is driven to rotate by the first car body, and the third rolling frame is driven to rotate by the third car body, so that the first rolling frame, the second rolling frame and the third rolling frame are jointly enclosed into a rollable shape.
Data Source
AI summary
A rollable toy car of the present disclosure relates to the technical field of toys. The rollable toy car includes a car body device, a rolling device arranged on the car body device, and a transformation actuating device arranged on the car body device, wherein a transformation actuator actuates a first car body to rotate by means of a first gear set; the transformation actuator actuates a third car body to rotate by means of a third gear set; and a first rolling frame is driven to rotate by the first car body, and a third rolling frame is driven to rotate by the third car body, so that the first rolling frame, a second rolling frame and the third rolling frame are jointly enclosed into a rollable shape.