Composite Bar with Soft Mantle for Spinal Stretching
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Solution Overview
Problem
Conventional training devices, such as broom sticks, often cause discomfort due to hard surfaces that exacerbate back pain and are ineffective for achieving therapeutic stretching due to their rigidity and inability to maintain position on soft surfaces like mattresses, limiting their usability for extended periods.
Innovation Solution
A composite training device featuring a core made of hard material, such as wood, combined with a soft foam mantle, which allows the device to maintain rigidity while preventing sinking into mattresses, enabling effective stretching and therapy sessions even on soft surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a hard surface bar (broom stick) is used for spinal stretching, then the rigidity required for effective stretching is achieved, but the device causes pain in the vertebrae region and is perceived as unpleasant
Solution Approach 1:
The bar is constructed as a composite structure with a hard inner core (wood or plastic) providing rigidity for effective stretching, surrounded by a soft outer mantle (foam material) that cushions the vertebrae and eliminates pain. This composite design allows the bar to simultaneously provide the necessary structural strength while protecting the user from harmful effects.
Solution Approach 2:
Different parts of the bar have different properties: the inner core maintains hard properties for structural integrity, while the outer mantle has soft properties for comfort. This local differentiation of material properties allows the bar to fulfill contradictory requirements in different regions.
2Stability of the object's composition
If a hard surface bar is used for stretching, then the necessary rigidity is maintained, but the device cannot be positioned on a mattress as it sinks into the mattress under body weight
Solution Approach 1:
The composite construction with hard core and soft mantle allows the bar to be positioned on mattresses. The soft outer mantle prevents the bar from sinking into the mattress under body weight, while the hard inner core maintains the rigidity necessary for effective stretching. This resolves the contradiction between stability and ease of operation.
Solution Approach 2:
The outer mantle provides a soft interface with the mattress surface, preventing sinking, while the inner core maintains structural rigidity. This local differentiation enables the bar to function effectively both on hard floors and soft mattresses.
3Length of moving object
If a thin diameter bar is used for stretching, then the device is easy to handle, but insufficient stretching of the muscles is achieved
Solution Approach 1:
The composite bar structure allows for an optimized diameter that provides sufficient stretching effectiveness. The soft outer mantle increases the effective contact diameter with the body, improving muscle stretching, while the hard inner core maintains structural integrity and ease of handling.
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 composite design allows for a training or therapy effect to be achieved by providing necessary rigidity while preventing the device from sinking into a mattress, making it suitable for use before sleep and effective in as little as 5-10 minutes.
Implementation Method 1
the core composed of a hard material ensures the rigidity of the composite bar as required for the training or the therapy. Bending of the composite bar is not possible.
Implementation Method 2
the mantle composed of a soft material prevents the composite bar from being pressed into the mattress by the body weight of the user and sinking into it.
Implementation Method 3
the user lies on the broom stick lengthwise with his/her back, wherein the user's spinal column and head come to lie on the broom stick due to gravity.
Data Source
AI summary
A training device in the form of a bar has a length that corresponds to at least the length of the spinal column and the head of the user when the user lies down on the training device lengthwise with his/her back, wherein the user's spinal column and head come to lie on the bar. The bar is a composite bar that has a core composed of a hard material and a mantle composed of a soft material.