Motorized Exercise Machine Loading Device
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Solution Overview
Problem
Existing exercise machine loading devices, particularly those using springs or weights, lack delicacy in load adjustment due to inherent limitations such as non-adjustable spring loads and limited weight combinations, and are inconvenient to use due to manual operation and instability.
Innovation Solution
A loading device comprising a lever, a coupler, a cylinder unit, and a driving unit with a threaded sleeve, rod, and motor, allowing for precise adjustment of resistance through motorized movement of the coupler along the lever, enabling adjustable moment arms and enhanced user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a spring is used in the loading device, then the load can be provided continuously, but the load cannot be adjusted by the user
Solution Approach 1:
The loading device employs a movable coupler that can be repositioned along the lever arm, transforming a static spring system into a dynamic adjustable system. The coupler's position changes the effective moment arm length, allowing users to adjust resistance levels while maintaining continuous load provision through the spring mechanism.
2Measurement precision
If a set of weights is used in the loading device, then the load can be adjusted, but the adjustment is not delicate due to considerable weight increments
Solution Approach 1:
Instead of changing discrete weight values, the invention adjusts the continuous parameter of moment arm length by moving the coupler along the lever. This allows for delicate, incremental load adjustments without the complexity of managing multiple weight plates, achieving precise control through positional variation rather than mass variation.
3Ease of operation
If manual operation is used in the loading device, then the structure can be simple, but the operation is inconvenient and unstable
Solution Approach 1:
The invention replaces manual mechanical adjustment with an automated motor-driven system. The motor rotates the threaded rod, which converts rotational motion into linear movement of the coupler along the lever. This substitution eliminates manual sliding and pin insertion operations, providing convenient automated adjustment while maintaining structural合理性 through the integrated mechanical-to-electrical conversion system.
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 provides a delicately adjustable loading device that enhances user experience by allowing precise resistance adjustment and improved convenience through motorized operation, enabling tailored workout resistance levels without the limitations of traditional systems.
Implementation Method 1
The threaded rod is engaged with the threaded sleeve so that the threaded rod moves the coupler via the threaded sleeve
Implementation Method 2
The motor rotates the threaded rod relative to the threaded sleeve so that the threaded rod moves the coupler via the threaded sleeve
Implementation Method 3
The cylinder unit includes an end connected to the exercise machine and another end connected to the coupler
Data Source
AI summary
An exercise machine is provided with a loading device. The loading device includes a lever, a coupler, a cylinder unit and a driving unit. The lever includes two ends. The first end of the lever is connected to the exercise machine. The coupler is movable along the lever between the first and second ends. The cylinder unit includes an end connected to the exercise machine and another end connected to the coupler. The driving unit includes a threaded sleeve, a threaded rod and a motor. The threaded sleeve is connected to the coupler. The threaded rod is engaged with the threaded sleeve. The motor rotates the threaded rod relative to the threaded sleeve so that the threaded rod moves the coupler via the threaded sleeve.