Dual Resistance Structure for Exercise Machines
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing exercise machines combining wind resistance and magnetic resistance face limitations in generating sufficient wind resistance due to space constraints, resulting in short blades and inadequate resistance levels.
Innovation Solution
A dual resistance structure with a wind resistance unit and a magnetic resistance unit, where the magnetic resistance member is selectively moved radially to adjust resistance, allowing for longer blades and balanced magnetic resistance without deforming the magnetic wheel, and a moving space between units to accommodate both wind and magnetic resistance adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the wind resistance unit is installed on the resistance wheel of the magnetic resistance unit, then the combination of wind resistance and magnetic resistance enhances exercise effect, but the space limitation causes the blades to be too short and wind resistance to be too small
Solution Approach 1:
The patent positions the wind resistance unit and magnetic resistance unit in different spatial dimensions - the wind resistance unit is arranged axially adjacent to the magnetic resistance wheel rather than radially on it. This dimensional repositioning allows both units to occupy separate spaces, enabling longer blades without interfering with the magnetic resistance adjustment mechanism.
2Adaptability or versatility
If the magnetic rotating wheel is made larger to accommodate the wind resistance unit, then the wind resistance unit can be installed, but the adjustment seat cannot carry the magnetic member toward the magnetic rotating wheel to adjust magnetic resistance
Solution Approach 1:
The patent extracts the wind resistance unit from the magnetic rotating wheel structure and positions it as a separate axial component. This separation removes the interference between the wind resistance blades and the magnetic resistance adjustment mechanism, allowing the adjustment seat to freely move the magnetic member toward or away from the magnetic rotating wheel without obstruction.
3Force
If the blades are extended to generate more wind resistance, then wind resistance increases, but the space limitation prevents sufficient blade length
Solution Approach 1:
By repositioning the wind resistance unit axially adjacent to the magnetic resistance wheel rather than radially on it, the patent creates additional spatial room for the blades to extend outward. This dimensional change allows the blades to achieve greater length and surface area, thereby generating increased wind resistance without exceeding the device's overall volume constraints.
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 dual resistance structure enhances exercise effectiveness by increasing wind resistance and maintaining balanced magnetic resistance, preventing deformation of the magnetic wheel, and allowing for adjustable resistance levels.
Implementation Method 1
a wind resistance unit (2) fixed to the rotating shaft (1), wherein the wind resistance unit (2) comprises a plurality of blades (21) arranged annularly
Implementation Method 2
a magnetic resistance unit (3) comprising a magnetic resistance member (31) and a magnetic resistance wheel (32) fixed to the rotating shaft (1)
Data Source
AI summary
A dual resistance structure includes a rotating shaft, a wind resistance unit, and a magnetic resistance unit. The wind resistance unit is fixed to the rotating shaft and includes blades arranged annularly. The magnetic resistance unit includes a magnetic resistance member and a magnetic resistance wheel. The magnetic resistance wheel is fixed to the rotating shaft. The magnetic resistance wheel is spaced apart from the wind resistance unit by a distance in an axial direction of the rotating shaft to form a moving space. The magnetic resistance member is selectively moved into or away from the moving space in a radial direction of the magnetic resistance wheel to adjust a magnetic resistance of the magnetic resistance wheel. Part of the magnetic resistance member is movable in the moving space when the magnetic resistance member is moved in the radial direction. The dual resistance structure is mounted on an exercise machine.