Passive Muscle Training Device with Eccentric Shaft Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional muscle training devices, such as handle grip strengtheners, only train muscles through centripetal contraction, leading to user dissatisfaction and abandonment, as they fail to provide training through both centripetal and centrifugal contractions.
Innovation Solution
A passive muscle training device with a base having X, Y, and Z axes, featuring pivotally connected rods and handles, and a power unit with an eccentric shaft that drives the rods to alternate in opposite directions along the X-Z plane, allowing for both centripetal and centrifugal muscle contractions when handles are held.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional handle grip strengtheners are used, then the structure is simple, but the muscle training is limited to centripetal contraction only
Solution Approach 1:
The patent applies dynamics by enabling the rod mechanism to perform both centripetal and centrifugal contractions dynamically, transforming the static single-direction training of conventional devices into a dynamic multi-directional training system that adapts to different muscle contraction phases
Solution Approach 2:
The device segments the muscle training function into two distinct contraction modes (centripetal and centrifugal) through the rod mechanism's bidirectional movement, allowing independent training of different muscle phases while maintaining a unified device structure
2Adaptability or versatility
If passive muscle training device with rod mechanism is used, then both centripetal and centrifugal contractions are enabled, but the device complexity increases
Solution Approach 1:
The rod mechanism serves multiple functions simultaneously: it enables both centripetal and centrifugal contractions, provides bidirectional force application, and accommodates various exercise intensities, making a single device structure perform multiple training functions that would otherwise require separate devices
Solution Approach 2:
The connection rod acts as an intermediary element that transmits and transforms motion between the driving rod and the first/second rods, enabling the complex bidirectional movement pattern through a simple mechanical linkage that mediates the force transmission
3Ease of operation
If hand grip strengtheners are used, then the device is easy to operate, but user engagement and adherence decrease
Solution Approach 1:
The device implements periodic action through the alternating centripetal and centrifugal contractions driven by the oscillating rod mechanism, creating a rhythmic training pattern that engages users more effectively while maintaining operational simplicity through automated motion
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 device effectively trains muscles through both centripetal and centrifugal contractions, enhancing user engagement and adherence by providing a more comprehensive workout experience.
Implementation Method 1
the shaft having at least one eccentric portion which is pivotably connected to at least one driving rod along the X-axis, the at least one driving rod pivotably connected to the at least one first rod, when the power unit drives the shaft whose eccentric portion drives the at least one first rod via the at least one driving rod
Data Source
AI summary
A passive muscle training device includes a base having at least one first link and at least one second link. At least one first rod is pivotably connected to the at least one first link. At least one second rod is pivotably connected to the at least one second link. The at least one first rod and the at least one second rod each have a handle extending beyond the cover on the base. A power input end is pivotably connected to the first rod and drives an eccentric portion of a shaft to swing the at least first rod and the at least one second rod alternatively. The user holds the two handles and the user's muscles are trained by centripetal contraction and centrifugal contraction due to the movement of the handles.