Foldable Pull Up Bar With Hinged L-Shaped Members
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Solution Overview
Problem
Traditional chin-up bars are not foldable, making them inconvenient for travel and storage, as they have a fixed length that does not fit in conventional travel bags.
Innovation Solution
A foldable exercise device with hinged joints and L-shaped members that can be easily folded and unfolded to a compact configuration for storage and expanded for use, allowing for chin-up and pull-up exercises, supported by a surface such as a doorframe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional chin-up bar with fixed length is used, then it provides stable support for exercises, but it cannot be folded for travel or compact storage
Solution Approach 1:
The chin-up bar is divided into multiple segments (first member, second member, third member, fourth member) connected by hinge joints, allowing the structure to be folded into a compact configuration for portability while maintaining stability when extended for exercise use
Solution Approach 2:
The bar transitions from a static fixed-length structure to a dynamic foldable structure with hinge joints that allow movement between extended (stable) and folded (portable) configurations, enabling both exercise stability and travel convenience
2Ease of operation
If the chin-up bar is made foldable with hinge joints, then it becomes portable and storable, but the structural complexity increases
Solution Approach 1:
The bar is segmented into four main members that can be connected through hinge joints, allowing foldability while maintaining a relatively simple overall structure that is easy to assemble and disassemble
Solution Approach 2:
The hinge joints enable the bar to transition between two-dimensional extended configuration (for exercise) and compact folded configuration (for storage), adding functional dimensionality without significantly increasing component count
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 portable and compact storage while providing a functional surface for performing chin-up and pull-up exercises, accommodating users of different heights and allowing for various grip configurations.
Implementation Method 1
a first member having a hinged joint, a second member having a hinged joint
Data Source
AI summary
A foldable exercise device for performing chin up and pull up exercises has a first member having a hinge joint and a second member having a hinge joint. The device also has third and fourth L shaped members connected to the first and second members, with the fourth L member being spaced from the third L member. The first and second members pivot about a hinge joint from a folded configuration to an extended configuration. The third and fourth L shaped members extend from a folded configuration to an extended configuration about their respective hinged joints. The exercise device is transformed from a compact form when the third and fourth L shaped members are moved from the folded configuration to an extended configuration in a first position and separated in a second position to extend the first and second members from a folded to an extended position.