Method for using a chair providing uplifting force to the user
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Solution Overview
Problem
Conventional chairs fail to effectively alleviate and prevent back and spine problems caused by prolonged sitting, particularly for individuals with pre-existing conditions like herniated or bulging discs, as they do not provide adequate relief from the increased pressure on the lumbar spine.
Innovation Solution
A chair equipped with weight sensors that detect prolonged pressure and automatically or manually lift the user's torso, reducing the pressure on the lumbar spine through a lifting mechanism integrated into the backrest, which can be programmed or activated manually.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a person sits on a conventional chair for prolonged periods, then the chair provides basic seating support, but the pressure on the lumbar spine increases significantly causing back pain and spine damage
Solution Approach 1:
The patent applies the anti-weight principle by using a lifting mechanism that generates an upward force to counteract the downward gravitational force on the user's torso. The lifting mechanism includes a motor, winch, and cable system that actively lifts the seat pan and backrest assembly, creating an opposing force to reduce the compressive load on the lumbar spine during prolonged sitting.
Solution Approach 2:
The patent implements dynamics by transforming the chair from a static structure to a dynamic system with active movement capabilities. The chair includes a lifting mechanism that can dynamically adjust the position of the seat pan and backrest assembly, and a tilting mechanism that allows the backrest to rotate relative to the seat pan, enabling the chair to adapt its configuration to reduce spinal pressure during use.
2Ease of manufacture
If a chair includes basic structural components (legs, seat, backrest), then it provides fundamental seating function, but it fails to alleviate back problems caused by prolonged sitting
Solution Approach 1:
The patent applies preliminary action by incorporating a lifting mechanism that proactively lifts the user's torso before significant spinal damage can occur. The system includes sensors and control logic that detect prolonged sitting duration and automatically activate the lifting mechanism to reduce lumbar pressure, preventing back problems rather than merely responding to pain symptoms.
Solution Approach 2:
The patent implements universality by designing the chair to perform multiple functions: basic seating support, active lifting to reduce spinal pressure, dynamic tilting for posture adjustment, and integrated sensor monitoring. The lifting mechanism and control system enable the chair to adapt to different users and sitting durations, providing comprehensive back protection across various usage scenarios.
3Object-affected harmful factors
If weight sensors and lifting mechanisms are added to the chair, then pressure on the spine is reduced, but the device complexity increases
Solution Approach 1:
The patent applies merging by integrating multiple functions into unified subsystems. The lifting mechanism combines the motor, winch, cable, and mounting structures into a single integrated assembly that raises both the seat pan and backrest together. The control system merges sensor inputs, processing logic, and actuator control into a unified control unit that manages both lifting and tilting operations, reducing overall system complexity.
Solution Approach 2:
The patent implements segmentation by dividing the chair into distinct functional modules: the lifting mechanism as a separate subsystem with its own motor and cable assembly, the tilting mechanism as an independent rotational joint, the sensor system as discrete weight sensors, and the control system as a separate processing unit. This modular segmentation allows each component to be optimized independently and simplifies maintenance and manufacturing.
Data Source
AI summary
A method for using a back lifting chair designed for treating and preventing back problems by monitoring posture, weight distribution, and sitting duration of an occupant of a seating device, and reducing pressure on a user's spinal disc by adjusting the user's posture. The method allows for an up-lifting motion on the user's torso, reducing the weight and pressure asserted on the lumbar disc, and preventing any further damage to it. The method allows for an upward and downward movement, hence partially or completely lifting the user from the seat, effectively reducing the pressure on the user's spine and back. The upward motion can be initialized by the user, or alternatively, it can be automatically activated by the weight sensor installed on the seat device which detects the prolonged period of sitting.