Spiral Spring Resistance Module for Compact Weight Adjustment
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Solution Overview
Problem
Conventional strength training equipment requires cumbersome weight block replacement or addition, poses safety risks, and necessitates significant installation space, making relocation difficult.
Innovation Solution
Exercise equipment that adjusts weight resistance through controlling elastic force applied to a wire, using an elastic module with a spiral spring and adjustment module to regulate the elastic force, eliminating the need for weight blocks and allowing for easy relocation and installation in confined spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If weight blocks are used for strength training, then weight resistance can be adjusted, but the process becomes cumbersome and poses safety risks
Solution Approach 1:
The patent replaces the mechanical weight block system with an elastic module that uses a spiral spring to provide resistance. The spring is wound around a wire roller, and when the wire is pulled, the spring unwinds to provide elastic force. This substitution eliminates the need for manual weight block handling while maintaining adjustable resistance through spring pre-tensioning.
Solution Approach 2:
The patent changes the resistance adjustment mechanism from discrete weight blocks to continuous elastic force adjustment. By varying the pre-tensioning of the spiral spring or the number of spring windings, the resistance level can be adjusted without physical manipulation of weight blocks, thereby improving ease of operation and safety.
2Adaptability or versatility
If multiple weight blocks are used, then weight resistance can be adjusted, but installation space requirements increase
Solution Approach 1:
The patent merges the resistance mechanism into a single integrated elastic module rather than requiring multiple separate weight blocks. The spiral spring, wire roller, and adjustment mechanism are combined in one compact unit, significantly reducing the installation space while maintaining the ability to adjust weight resistance through spring pre-tensioning.
3Ease of operation
If weight blocks are used, then strength training is possible, but relocation becomes challenging
Solution Approach 1:
The patent replaces the heavy weight block system with a lightweight elastic module that uses spring force instead of gravity-based weight blocks. This substitution makes the equipment much lighter and easier to relocate, while still providing effective strength training resistance through elastic force.
4Force
If spring gear and wire roller components are used, then elastic force can be applied to wire, but friction between components increases
Solution Approach 1:
The patent introduces a bearing as an intermediary component between the spring gear and wire roller. The bearing reduces friction and allows smooth rotation of the wire roller relative to the spring gear, enabling efficient elastic force transmission while minimizing harmful friction between the components.
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 equipment safely adjusts weight resistance without blocks, reducing installation space requirements, enhancing safety, and facilitating easy relocation, while minimizing friction and noise for smooth operation.
Implementation Method 1
a spiral spring installed inside the spring gear to provide elastic force to the wire
Implementation Method 2
reduce the friction between the spring gear and the wire roller, which are components of the elastic module
Data Source
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.