Tilting Inversion Exerciser Center of Gravity Alignment
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Solution Overview
Problem
Conventional tilting inversion exercisers are unstable due to the offset center of gravity between the user and the supporting stand, and the motor-driven devices suffer from high torque damage when attempting to rotate the user to a vertical position, limiting the range of exercises that can be performed.
Innovation Solution
A tilting inversion exerciser with a power rotating device featuring pivot coupling devices and a motor-driven threaded member that allows the table to be rotated relative to the supporting stand, positioning the center of gravity closer to the stand's center, enabling stable support and vertical rotation of the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sled and pivoting frame are pivotally attached to the stationary support frame with the center portion, then the user can be supported on the sled, but the center of gravity of the sled and user becomes offset from the center of gravity of the stationary support frame, causing instability
Solution Approach 1:
The patent applies asymmetry by offsetting the pivotal attachment point from the center of the stationary support frame. Specifically, the pivoting frame is attached at a point that is offset from the center of gravity of the stationary support frame, creating an asymmetric configuration that allows the sled and user to be supported while maintaining stability through proper center of gravity alignment.
2Adaptability or versatility
If the motor-driven device uses a flexible metal cable to couple to the sled, then the sled can be rotated to various angular positions, but the sled and user cannot be tilted to an upright position perpendicular to the ground, limiting inversion exercises
Solution Approach 1:
The patent applies parameter changes by modifying the structural configuration of the pivoting frame and its attachment points. The pivoting frame is designed with specific geometric parameters that enable it to reach a vertical position perpendicular to the ground. The offset attachment point and the dimensions of the pivoting frame are carefully selected to allow the sled to be tilted to an upright position, enabling full inversion exercises.
3Power
If the motor-driven worm is directly engaged with the worm gear of the pivoting tube, then the driving device can rotate the rotatable frame, but the motor-driven worm suffers from great torque and is easily broken or damaged
Solution Approach 1:
The patent applies the intermediary principle by introducing a gear train as a mediator between the motor-driven worm and the worm gear of the pivoting tube. The gear train includes intermediate gears that transmit the driving force from the motor-driven worm to the worm gear, distributing the torque and reducing the direct load on the motor-driven worm, thereby preventing it from being easily broken or damaged.
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 stable support and allows users to conduct inversion exercises in a vertical position, reducing the risk of motor damage and enhancing exercise range by maintaining the center of gravity alignment, thus ensuring stability and safety during exercises.
Implementation Method 1
a bolt or threaded member (41) threaded with a tube (42)... and thus for adjustably coupling the pivot coupling devices (30) and thus the table (20) to the lower supporting stand (10)
Implementation Method 2
two pivot coupling devices (30) for coupling the supporting table (20) to the stationary supporting stand (10), and including axles (33) for pivotally attaching the pivot coupling devices (30) to the supporting stand (10)
Data Source
AI summary
A tilting inversion exerciser includes a table rotatably supported on a supporting stand for supporting a user, two pivot coupling devices each having a middle axle for pivotally attaching to the supporting stand and each having one arm secured to the side portions of the table for offsetting the table from the axles of the pivot coupling devices, and a rotating device for rotating the pivot coupling device relative to the supporting stand, to rotate the table relative to the supporting stand. The table and the user may be supported and located on or closer to the center of gravity of the supporting stand, for being stably supported on the supporting stand particularly when the user is conducting the inversion exercises.