Exercise Chair Backrest Support to Prevent Tipping in Compact Storage
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Solution Overview
Problem
Existing exercise equipment for supine or back stretch exercises is bulky, occupies excessive space, and is inconvenient to store and move due to its design requiring a backward extending support structure to prevent tipping.
Innovation Solution
An exercise chair with a pivotable backrest, adjustable support rods, and limiting devices that allow conversion between a regular chair and exercise equipment, featuring a rotatable backrest, movable support rods with wheels, and elastic restoring elements to maintain stability and minimize space occupation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a backward extending support structure is added to prevent tipping, then stability is improved, but the device occupies more space
Solution Approach 1:
The support rod is designed to be movable rather than fixed, allowing it to extend backward only when needed for exercise support and retract forward when not in use. The rod can be adjusted between a retracted position (minimal space occupation) and an extended position (providing backward support for stability during exercises).
Solution Approach 2:
The movable support rod is stored within or alongside the main body structure when not in use, similar to a nested doll configuration. This allows the support function to be integrated without permanently increasing the device's footprint, as the rod nests into the chair structure when retracted.
2Stability of the object's composition
If the support structure is made extendable, then stability during exercise is improved, but the device becomes bulky and inconvenient to store
Solution Approach 1:
The support rod incorporates a movable mechanism with wheels that allow easy extension and retraction. The rod can be smoothly moved between stored and deployed positions, making the device convenient to set up and store without requiring complex assembly or disassembly.
Solution Approach 2:
The support function is separated from the main chair body as an independent movable rod. This segmentation allows the support component to be independently controlled and positioned, enabling easy storage by simply retracting the rod without affecting the main chair structure.
3Adaptability or versatility
If the backrest is made rotatable to enable exercise positions, then versatility is improved, but the device becomes less stable
Solution Approach 1:
The backrest is designed to be rotatable relative to the main body, allowing it to transition between an upright position (for normal sitting) and a reclined position (for exercises). This dynamic capability enables the device to adapt to different uses while maintaining stability through the movable support rod that provides counterbalancing support during position changes.
Solution Approach 2:
The movable support rod acts as an intermediary element that compensates for the instability introduced by the rotatable backrest. When the backrest rotates to a reclined position, the support rod extends to provide additional stability, effectively mediating between the need for movement and the need for stability.
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 chair can be used as both a regular chair and exercise equipment, minimizing space usage and preventing tipping, ensuring safety and convenience in use.
Implementation Method 1
at least one elastic restoring element connected between the backrest and the main body, such that when no external force is exerted on the backrest, the elastic restoring element can restore the position of the backrest relative to the seat
Data Source
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AI summary
An exercise chair includes: a main body with a pivot part; a backrest pivoted to the pivot part and rotatable to change a backrest angle; a movable support rod with an end having at least one wheel for touching a floor and another end pivoted with the rear of the backrest for changing the touchdown position of the wheel; a first limiting device connected to the pivot part for providing sufficient support to limit the backrest angle and the wheel touchdown position; a second limiting device arranged on a second extension part for limiting and stopping the movement of the movable support rod to prevent tipping over backwards when the first limiting device is loose or broken; and an elastic restoring element connected between the backrest and the main body for restoring the backrest to a predetermined tilt angle, so as to minimize the occupied space of the exercise chair.