Damping Device for Exercise Equipment with Two-Stage Transmission
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Solution Overview
Problem
Conventional rowing machines with improved fan blades provide limited resistance due to synchronous rotation through a one-stage transmission, restricting training effectiveness for users with varying physical strength levels.
Innovation Solution
A damping device with a transmission unit, tension unit, and resistance unit, featuring a driving wheel, rotating wheels, woven ribbon, and adjustable resistance member, allowing for even and adjustable resistance through two-stage transmission, balancing weight and enhancing training levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If one-stage transmission is used to rotate the magnetic-control wheel and vane wheel synchronously, then the structure is simple, but the generated resistance is limited
Solution Approach 1:
The patent divides the transmission system into two independent stages: a first transmission mechanism connecting the driving wheel to the magnetic-control wheel, and a second transmission mechanism connecting the driving wheel to the vane wheel. This segmentation allows each stage to contribute independently to the total resistance, overcoming the limitation of single-stage transmission while maintaining structural organization.
Solution Approach 2:
The patent transitions from a single-dimension transmission (one-stage) to a two-dimension transmission system (two-stage), where the driving wheel simultaneously drives both the magnetic-control wheel and the vane wheel through separate transmission paths. This dimensional expansion enables multiplicative resistance generation rather than additive, significantly increasing the total resistance output.
2Adaptability or versatility
If conventional fan blades are used in the magnetic-control wheel, then the structure is simple, but the training effect is limited due to limited resistance
Solution Approach 1:
The patent introduces an adjustable resistance mechanism that allows users to dynamically modify the resistance level during exercise. The resistance can be adjusted by changing the position of the magnetic-control wheel relative to the magnets, enabling adaptation to different training levels and user strengths, thereby enhancing versatility.
3Force
If the vane wheel rotates along a path offset from the periphery of the magnetic-control wheel, then windage resistance is generated, but the resistance remains limited due to one-stage transmission
Solution Approach 1:
The patent ensures continuous and synchronized rotation of both the magnetic-control wheel and the vane wheel through the two-stage transmission system. This continuous action maximizes the generation of windage resistance throughout the entire exercise cycle, eliminating idle periods and maintaining constant training effectiveness.
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 damping device provides balanced and adjustable resistance, enabling effective training for users with different strength levels by generating greater resistance than one-stage transmission systems, enhancing the training experience.
Implementation Method 1
the generated air flow is effective in generating windage resistance, so as to increase damping for the magnetic-control wheel
Implementation Method 2
an adjustable resistance member that is located at the end of the frame unit and outside and below the second rotating wheel. The resistance fan has a fan wheel, and an axle that is coupled to the fan wheel and connected to the frame unit. The adjustable resistance member has a resistance generator connected to the frame unit
Data Source
AI summary
A damping device for exercise equipment is disclosed. The damping device includes a transmission unit, a tension unit, and a resistance unit. The transmission unit has a driven shaft and a driving wheel mounted around a middle section of the driven shaft. The driven shaft has two ends thereof provided with a first rotating wheel and a second rotating wheel, respectively. The resistance unit includes a resistance fan and an adjustable resistance member located outside and below the first rotating wheel and the second rotating wheel, respectively, so as to structurally achieve overall weight balance. When the tension unit receives a push/pull force, a woven ribbon connected between the tension unit and the driving wheel drives the driven shaft to rotate the first and second rotating wheels, thereby making the resistance fan rotate and making the adjustable resistance member output even and adjustable resistance.