Elastic Ring Chain for Adjustable Resistance Exercise Tool
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Solution Overview
Problem
Existing elastic bands for physical training and rehabilitation lack adjustability in resistance, requiring multiple bands for different user needs and being uncomfortable to use due to varying resistance with extension, and they can be prone to breakage during exercises.
Innovation Solution
A tool featuring an open chain of grippable elastic rings with a non-elastic accordion-style covering, allowing users to select the number of rings for desired resistance and providing a more linear traction response, with each ring's core and covering securely connected to prevent breakage and enhance grip safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single elastic band is used, then the device is simple and easy to use, but the resistance cannot be adjusted for different user needs
Solution Approach 1:
The elastic band is divided into multiple segments (rings) that can be selectively connected or disconnected. Each ring represents a segment of the overall elastic structure, allowing users to adjust the total resistance by changing the number of active rings in the sequence. This segmentation enables a single device to provide multiple resistance levels without requiring multiple separate bands.
Solution Approach 2:
The elastic band incorporates dynamic reconfigurability through movable connection points and adjustable ring configurations. Users can dynamically change the resistance characteristics by rearranging the rings or adjusting the connection state, transforming a static single-resistance device into a dynamic multi-resistance system that adapts to different user needs.
2Adaptability or versatility
If multiple elastic bands of different resistance are used, then the resistance can be adjusted for different users, but the device complexity increases and requires multiple bands
Solution Approach 1:
Multiple elastic bands are merged into a single integrated device consisting of a sequence of connected rings. This combination allows users to access multiple resistance levels through one device rather than managing several separate bands. The merged structure maintains the elasticity and resistance characteristics of individual bands while enabling flexible configuration through the ring sequence.
3Force
If the elastic band resistance varies with extension, then the band responds to stretching, but the response is non-linear and difficult to control
Solution Approach 1:
The elastic band is segmented into multiple rings, each contributing to the overall force response. By dividing the continuous elastic structure into discrete segments, the system achieves a more linear cumulative force-elongation relationship. Each ring's elastic response adds up in a more predictable manner compared to a single continuous band, improving force consistency and controllability.
4Reliability
If conventional elastic bands are used, then they provide basic elastic resistance, but they are prone to breakage during exercises
Solution Approach 1:
The elastic band is divided into multiple segmented rings connected in sequence. This segmentation distributes mechanical stress across multiple connection points and ring structures rather than concentrating it in a single continuous band. The segmented architecture reduces the likelihood of breakage by providing multiple failure points that can accommodate stress variations during exercise movements.
Solution Approach 2:
The elastic rings are constructed using composite material structures that combine materials with different properties. This composite construction enhances the overall strength and durability of each ring, making them more resistant to breakage. The composite structure allows the rings to withstand the mechanical stresses of exercise while maintaining elasticity and flexibility.
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
Enables customizable resistance levels, increased comfort and safety during exercises, and prevents the whip effect associated with conventional elastic bands, allowing for a wider range of exercises with improved stability and versatility.
Implementation Method 1
each of the rings (2a-2n) is elastic and comprises a core (3) made of an elastic material
Implementation Method 2
a covering (4) of the core (3) made of a material that is non-elastic with respect to the core (3) itself, such that when the core (3) is not stressed under traction it has a large fitting on the core (3) itself, and when instead the core (3) is stressed under traction/extension the covering (4) is extended in order to conform to the extension of the core (3)
Data Source
AI summary
A tool for physical training and rehabilitation, including a plurality of rings linked in succession to make an open chain. At least some of said rings are elastic, and they include at least a core made of an elastic material and at least a covering of the core made of a material that is non-elastic with respect to the core, wherein the covering is substantially configured as an accordion such that when the core is not stressed under traction it has a large fitting on the core itself, and when the core is stressed under traction/extension the covering is extended in order to conform to the extension of the core. The core includes at least one elongated elastic element, having two opposite ends, and at least one connection member linked, or knotted, to the ends.