Spiral Spring Resistance Trainer for Compact Weight Adjustment
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Solution Overview
Problem
Conventional strength training equipment requires cumbersome weight block replacement or addition, poses a risk of accidents, and necessitates significant installation space, making relocation challenging.
Innovation Solution
Exercise equipment that adjusts weight resistance through controlling elastic force applied to a wire using a spiral spring and adjustment module, eliminating the need for weight blocks and allowing for easy relocation and installation in confined spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If weight blocks are used for strength training, then weight resistance can be adjusted, but the equipment requires significant installation space and relocation is difficult
Solution Approach 1:
The patent merges the weight resistance function into the elastic module by integrating multiple weight-adjustable spring units within a compact housing. This consolidation eliminates the need for separate weight blocks and reduces the overall installation space while maintaining weight adjustment capability through the selection of different spring units.
Solution Approach 2:
The patent employs a nested structure where multiple spring units are arranged vertically within a compact housing space. The guide rod passes through multiple spring units that are nested along its length, allowing weight adjustment without requiring additional horizontal space. This nesting approach solves the contradiction between weight adjustability and installation space.
2Adaptability or versatility
If weight blocks are replaced or added to adjust resistance, then weight can be changed, but there is a risk of falling accidents and the process is cumbersome
Solution Approach 1:
The patent implements a dynamic locking mechanism where the locking member can be moved between locked and unlocked positions by the user. This allows safe and easy adjustment of spring units without the risks associated with handling heavy weight blocks. The system transitions from a static weight block configuration to a dynamically adjustable spring-based system that prioritizes user safety.
Solution Approach 2:
The patent introduces a guide rod as an intermediary element that connects the user's pulling action to the spring units. Instead of directly handling weight blocks, the user pulls the guide rod, which then interacts with the spring units and locking mechanism. This intermediary approach eliminates the need for users to manually handle heavy weights, thereby improving safety during adjustment.
3Adaptability or versatility
If multiple weight blocks are used for different resistance levels, then weight adjustment is possible, but the device complexity increases
Solution Approach 1:
The patent makes the guide rod multi-functional by designing it to serve as both the user interface for pulling and the mechanical element that interacts with multiple spring units. This single component performs multiple functions: transmitting user force, engaging with locking mechanisms, and coordinating spring unit selection. This universality reduces the number of separate components needed compared to traditional weight block systems.
Solution Approach 2:
The patent segments the weight resistance function into multiple independent spring units that can be individually selected and engaged. Each spring unit represents a discrete resistance level, and the system allows selective engagement of these segments through the locking mechanism. This segmentation approach simplifies the overall structure compared to using multiple separate weight blocks while maintaining adjustability.
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
Enhances safety by reducing accident risks, reduces installation space requirements, and facilitates easy relocation, while minimizing friction and noise for smoother operation.
Implementation Method 1
a spiral spring installed inside the spring gear to provide elastic force to the wire
Data Source
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AI summary
The present invention relates to exercise equipment, and more specifically, to exercise equipment that allows for the adjustment of weight resistance by controlling the elastic force applied to a wire. An exercise apparatus according to the present invention comprising a case having an internal space; an elastic module installed within the internal space and providing elastic force to a wire drawn out outside the case; and an adjustment module installed on one side of the elastic module to adjust the elastic force applied to the wire: wherein the elastic module comprises: a wire roller on which the wire is wound; a rotating shaft integrally rotating with the wire roller; a spring gear rotatably installed on the rotating shaft; and a spiral spring installed inside the spring gear to provide elastic force to the wire, wherein the spring gear comprises: a gear body open on one side to accommodate the spiral spring; a cover connected to the open side of the gear body, with radial protrusions formed on its inner surface in contact with the spiral spring; and a spring retainer securing the inner end of the spiral spring and fixed to the rotating shaft.