Foldable Platform Truck Brake via Swivel Handle
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Solution Overview
Problem
Existing foldable platform trucks are heavy, limited in adjustability, and difficult to control, making them less functional for rolling transport of loads.
Innovation Solution
A foldable platform truck with a bearing surface supported by at least three wheels, a rotatable operating bracket with a gripping handle, a lock for securing the bracket, and a brake that contacts the wheels to provide better control and stability, allowing for adjustable locking positions and wheel blocking for stationary operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a brake mechanism is added to the platform truck, then control and stability are enhanced, but device complexity increases
Solution Approach 1:
The brake mechanism is merged with the operating bracket assembly. The brake is integrated into the operating bracket such that moving the operating bracket between unfolded and folded positions simultaneously activates or deactivates the brake, combining two functions into one structure.
Solution Approach 2:
The brake mechanism is designed to activate automatically through the natural movement of the operating bracket. When the operator folds the operating bracket, the brake self-activates without requiring a separate control action, making the system self-regulating.
2Adaptability or versatility
If the operating bracket is made adjustable with multiple locking positions, then adaptability is improved, but device complexity increases
Solution Approach 1:
The operating bracket is designed with dynamic adjustability, allowing it to be locked at multiple positions along its folding path. The bracket can be held at intermediate positions between fully unfolded and fully folded states, providing adaptability for different loading conditions and maneuvering requirements.
Solution Approach 2:
The locking mechanism is segmented into multiple engagement points along the operating bracket's path of motion. This allows the bracket to be locked at discrete positions while maintaining a relatively simple overall structure, as each locking point is a separate engagement feature.
3Volume of moving object
If the platform truck is designed to be foldable for compact storage, then ease of storage is improved, but strength and stability may be compromised
Solution Approach 1:
The platform truck features a dynamically foldable operating bracket that can transition between extended and retracted positions. When extended, the bracket provides full structural support and strength; when retracted, it reduces the overall volume for compact storage. The brake mechanism ensures stability in both configurations.
4Ease of operation
If a brake mechanism is integrated into the operating bracket, then ease of operation is improved, but manufacturing complexity increases
Solution Approach 1:
The brake mechanism is combined with the operating bracket as an integrated assembly. The brake components are positioned such that they are actuated by the same motion that folds or unfolds the operating bracket, eliminating the need for separate controls and reducing manufacturing steps.
Solution Approach 2:
The brake system is designed to be self-actuating through the motion of the operating bracket itself. The mechanical movement of folding the bracket naturally engages or disengages the brake, requiring no additional actuators, controls, or complex manufacturing processes.
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
Enhances control and stability, reduces weight and parts, and offers adaptable functionality for various environments, including uneven surfaces, while allowing for efficient storage and transport of larger or heavier objects.
Implementation Method 1
a brake that contacts the wheels to provide better control and stability, allowing for adjustable locking positions and wheel blocking for stationary operation
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
The present invention relates to a foldable platform truck (1), comprising at least one bearing surface (2) supported by at least three wheels (4, 5); a foldable operating bracket (6) that on one side is rotatable attached to the at least one bearing surface (2) and on the opposite free side has a gripping handle (7); a lock (9) for securing the operating bracket (6) in at least one unfolded operating locking position; and a control (10) for controlling the operating bracket lock (9). The operating bracket (6) is also provided with a brake that is contacting at least one of the wheels (4) when the operating bracket (6) is moved from an unfolded operating position to a farther opened position.