Two-Part Back Stretching Couch With Pendulum-Guided Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional stretching beds are complex, bulky, expensive, and require assistance for operation, limiting their usability for self-stretching in supine or prone positions.
Innovation Solution
A device with a frame and pendulum supports, featuring a mechanical guide and ropeless coupling, allows users to independently adjust and stretch their back by pivoting a two-part couch relative to a rear frame part, using a pendulum movement without pulleys or cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional stretching beds use cable pulls and pulleys for stretching mechanism, then the stretching function is achieved, but the device becomes complex, bulky, and expensive to manufacture
Solution Approach 1:
The patent removes the cable pulls and pulleys from the stretching mechanism, replacing them with a direct mechanical linkage system. The stretcher is directly connected to the height-adjustable mast through simple mechanical joints, eliminating the need for complex cable and pulley systems while maintaining the stretching function.
Solution Approach 2:
Instead of using cables and pulleys to transmit force for stretching, the patent inverts the approach by using direct mechanical advantage through the height-adjustable mast and stretcher assembly. The stretching force is applied directly through the mechanical structure rather than through intermediary cable systems.
2Ease of operation
If conventional stretching beds require a therapist or assistant for operation, then proper stretching can be achieved, but the device loses independence and user-friendliness
Solution Approach 1:
The patent enables the user to independently operate the stretching device without requiring a therapist or assistant. The height-adjustable mast and stretcher assembly are designed to be easily adjusted and operated by the user themselves, allowing independent control of the stretching process.
Solution Approach 2:
The patent incorporates dynamic adjustment capabilities that allow the user to easily modify the stretching parameters during operation. The height-adjustable mast and movable stretcher enable real-time adjustments without requiring complex control systems or assistance from others.
3Adaptability or versatility
If conventional stretching beds are designed for inverted position only, then back stretching is achieved, but the device lacks versatility for different body positions
Solution Approach 1:
The patent designs the stretching device to accommodate multiple body positions including supine, prone, and inverted positions. The frame structure and stretcher assembly are configured to support various orientations, making the device versatile for different stretching needs without requiring separate specialized equipment for each position.
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 simple, cost-effective, and comfortable back stretching in both supine and prone positions, adaptable to different body sizes, with precise control over stretching force.
Implementation Method 1
a mechanical guide and mechanical ropeless coupling is provided between the pendulum supports and the two-part frame, by means of which, with a pendulum movement of the two-part frame, the front frame part can be pushed apart and pushed together again relative to the rear frame part
Data Source
AI summary
An example device includes a frame with opposing pendulum supports connected to a transverse support profile and on which a two-part frame with a front-frame part and rear-frame part is mounted for support. The front-frame part is attached to a slide guided in a longitudinally displaceable manner on a guide profile that projects vertically forward from the support profile. This carriage carries guide rollers, which can be moved into stationary guide profiles attached to the frame. These guide rollers are retracted into the guide profiles by pivoting the two-frame parts forward. They are guided in the same, so that when the frame parts and the two-part couch are pivoted, the relative distance between the first front-couch part and the rear-frame part and rear-couch part lying thereon can be varied and a person lying on the two-part couch can stretch.