Rotating Sheave Exercise Bar for Resistance Bands
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Solution Overview
Problem
Existing exercise equipment for resistance bands is often limited to specific types or brands, lacking versatility and potentially causing damage or discomfort during use due to inadequate design for smooth motion and safety.
Innovation Solution
An exercise bar with rotating resistance band sheaves featuring a rigid elongated bar, band-support rotors, band-collars, and slotted cover shells that accommodate various resistance band widths, providing secure retention and smooth motion, and optionally incorporating rubber or rubberized components for added safety and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-design exercise accessory is used, then it works well with a specific type or brand of resistance band, but it cannot accommodate different types, widths, or thicknesses of bands
Solution Approach 1:
The exercise bar is designed with a universal interface that can accommodate multiple types of resistance bands. The bar features a U-shaped channel with adjustable positioning mechanisms that can adapt to different band widths, thicknesses, and configurations, allowing a single device to serve multiple functions with various band types rather than requiring separate accessories for each band variety
Solution Approach 2:
The exercise bar incorporates movable or adjustable components such as sliding clamps, repositionable grips, or adjustable channel positions that can be dynamically reconfigured during use. This dynamic adjustment capability allows the bar to adapt its structure to match different resistance band specifications, transitioning from a fixed design to a flexible, adaptable system
2Reliability
If resistance bands are tightly secured to prevent movement, then retention is improved, but the bands cannot move smoothly during exercise causing discomfort or damage
Solution Approach 1:
The retention mechanism is divided into separate functional zones: a secure anchoring section that firmly holds the band in place, and a smooth transition section that allows controlled movement. The bar features distinct regions such as a clamping zone for secure retention and a polished guide surface for smooth band passage, separating the conflicting requirements of tight securing and smooth motion into different spatial locations
Solution Approach 2:
The surface characteristics of the bar are varied along its length to optimize different functions. The anchoring portion may have a higher friction surface or mechanical engagement features for secure retention, while the guide portion has a lower friction, smoother surface to enable easy band movement. This parameter change in surface properties along the bar's length resolves the contradiction between tight securing and smooth motion
3Ease of manufacture
If the exercise bar structure is simplified, then ease of manufacture is improved, but it becomes more prone to damage and less safe
Solution Approach 1:
The exercise bar is constructed from composite materials or material combinations that provide both structural strength and manufacturing feasibility. This may include using high-strength aluminum alloy with protective polymer coatings, or combining different metal sections with dissimilar material properties to achieve both durability and ease of fabrication, rather than using a single simple material throughout
4Adaptability or versatility
If the bar accommodates various band widths and thicknesses, then versatility is improved, but the structure becomes more complex and harder to manufacture
Solution Approach 1:
The bar incorporates adjustable elements that can be repositioned along the bar's length or height, adding a dimensional aspect to the design. This may include vertically adjustable clamps, sliding mechanisms along the bar's length, or repositionable grips that can be set at different heights and positions, allowing accommodation of various band dimensions through spatial adjustment rather than complex multi-sized 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
Enables safe and effective use with multiple types of resistance bands, ensuring smooth motion and reducing the risk of damage to the equipment and surroundings, while accommodating different band widths and thicknesses for versatile exercise options.
Implementation Method 1
a rotor secured for free rotation to an axial end of the rigid elongated bar
Implementation Method 2
the bumper flange extending radially outwardly from the semi-circumferential cover portion is formed from a rubber or a rubber-like material
Data Source
AI summary
An exercise-bar is provided for use with flexible resistance bands. The exercise-bar includes a rigid elongated bar; and a pair of rotating resistance band sheaves respectively installed at the opposing axial ends of the rigid bar. Each band sheave includes: a rotor secured for free rotation to an axial end of the rigid elongated bar; a band-collar carried on a band-support portion of the rotor and having an axial width to accommodate at least a width of a flexible resistance band thereabout; and a slotted cover shell carried on the rotor. The slotted cover shell includes an open axial end and a semi-circumferential cover portion covering a corresponding semi-circumferential portion of the band-collar and an axial slot extending into an axial end of the semi-circumferential cover portion and extending along at least the axial width of the band-collar.