Adjustable Y-Grip Pullup Bar With Friction Strip Doorframe Support
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Solution Overview
Problem
Existing doorframe pullup bars face challenges in maintaining consistent frictional contact with varying doorframe sizes and lack adjustable 'Y' grip options, limiting their effectiveness and versatility in home fitness exercises.
Innovation Solution
The Friction Enhanced and Adjustable 'Y' Grip Doorframe Pullup Bar incorporates a frictional support strip on the crossbeam and allows for axial adjustment of the 'Y' grip, enhancing frictional grip and providing multiple grip orientations to accommodate different doorframe sizes and muscle targeting needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the crossbeam makes normal contact with the top of the doorframe and wall, then the structural stability is improved, but the frictional grip is insufficient leading to contact failure
Solution Approach 1:
A friction strip is introduced as an intermediary element between the crossbeam and the doorframe. This friction strip has high friction coefficient material surfaces that contact the doorframe, providing enhanced frictional grip while allowing the crossbeam to maintain its structural stability and normal contact position.
2Ease of manufacture
If the crossbeam width is fixed, then the manufacturing simplicity is maintained, but the adaptability to varying doorframe sizes is reduced
Solution Approach 1:
The crossbeam is designed with adjustable width capability, allowing it to be configured dynamically to match different doorframe widths. This adjustability is achieved through mechanisms such as adjustable mounting brackets or expandable structures that enable the crossbeam to adapt to varying doorframe dimensions while maintaining manufacturing simplicity.
3Device complexity
If the Y grip is fixed in orientation, then the structural simplicity is maintained, but the exercise versatility is limited
Solution Approach 1:
The Y grip is designed with rotational capability along its long axis, allowing it to be adjusted between different orientations (e.g., pointing downward for traditional pullups, or rotated to point horizontally). This dynamic adjustment enables the same grip structure to support multiple exercise variations and target different muscle groups without increasing overall structural complexity.
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 ensures improved frictional contact with doorframes of varying sizes and offers adjustable grip options, enhancing exercise utility and safety by reducing failure risks and expanding muscle engagement possibilities.
Implementation Method 1
By introducing a friction strip to the crossbeam, to the surface of the crossbeam that contacts the top of the door frame, the crossbeam will be able to improve its frictional grip to the door frame and thereby enhance its contact interaction.
Data Source
AI summary
The doorway pullup bar is presented comprising the ability to safely and firmly rest on a header of a doorframe, whereby a friction strip is added to an underside of a cross-beam that extends between a first angle bar and a second angle bar of the doorway pullup bar. Further, the doorway pullup bar provides improved grip variety so that the user can engage with the same doorway pullup bar to securely perform a greater variety of exercises including chip ups, hammer pulls, and pullups in a variety of configurations. A left hand grip bar and a right hand grip bar each include two sets of holes that are adjustable by the user depending on the type of exercise to be performed and the type of training sought. The doorway pullup bar is adjustable to accommodate the variety of thicknesses and widths of doorframes.