Segmented Exercise Bar With Friction Grip Handles
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Solution Overview
Problem
Existing exercise bars face issues with grip deformation, sliding, and inability to transmit significant forces without shifting, leading to potential injury and material damage, and lack a modular design for easy storage and travel.
Innovation Solution
A tubular handle grip with a grip section and closed end configured to react axial and lateral loads, featuring a varying transition section and raised features for increased friction, integrated with a segmented bar system for modular assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a spiral wrap grip is used on the exercise bar, then the grip provides a soft gripping surface, but the grip is susceptible to deformation and sliding under significant loads
Solution Approach 1:
The grip assembly combines a soft spiral wrap material with a rigid end cap structure. The end cap is made of a rigid material that resists deformation and sliding, while the spiral wrap provides comfortable grip. This composite construction allows the grip to transmit significant forces without shifting or deforming, resolving the contradiction between comfort and stability.
Solution Approach 2:
The end cap and spiral wrap are merged into a single integrated grip assembly that functions as one unit. The end cap is applied to the bar first, then the spiral wrap is wound over it, creating a combined structure where the rigid end cap provides structural support and the soft wrap provides grip, eliminating the separate components that caused instability.
2Ease of manufacture
If separate end cap and grip components are used, then the grip can be applied to the bar, but the components cannot transmit force directly between each other
Solution Approach 1:
The end cap and spiral wrap are merged into a single integrated grip assembly that functions as one unit. The end cap is made of a rigid material that resists deformation and sliding, while the spiral wrap provides comfortable grip. This composite construction allows the grip to transmit significant forces without shifting or deforming, resolving the contradiction between comfort and stability.
3Ease of manufacture
If the end cap does not extend along the bar, then the grip can be applied separately, but the end cap is limited in lateral force capacity
Solution Approach 1:
The end cap extends along the bar in the axial dimension, creating a longer structural element that can better resist lateral forces. This extension allows the end cap to engage with the bar over a longer period, distributing forces more effectively and preventing slipping or material damage.
4Force
If a one-piece handle grip is used, then force transmission is improved, but the bar cannot be easily packed for travel or storage
Solution Approach 1:
The exercise bar is segmented into multiple sections that can be disconnected from each other. This allows the bar to be easily packed for travel or storage by removing the end caps and spiral wraps, while maintaining the integrity of the main bar section. The segmented design enables compact storage without compromising force transmission during use.
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 solution provides a stable and secure grip capable of withstanding significant forces, preventing injury and material damage, while allowing for easy disassembly and storage, enhancing user safety and convenience.
Implementation Method 1
the cylindrical recess is configured to engage with the end of the cylindrical bar by a friction force
Implementation Method 2
the grip section is in tension azimuthally, and the tension causes the friction force
Data Source
AI summary
Handle grip are configured to interface to the end of a bar allowing a user to employ the bar for motion, exercise, stretching or other activity. For example, the handle grips may slip onto the bar under force. The handle grips include a grip section, configured to provide a surface the user can grab. Accordingly, the grip surface may include features that increase the effective friction coefficient. The handle grip also includes an end section configured to react both axial and lateral loads applied by the user via the grip section. The bar can be sectioned, making storage and transport easier. Accordingly, the sectioned bar can be assembly to provide the desired length of exercise bar.