Segmented Seat and Backrest Structure for Sacral Pressure Relief
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Solution Overview
Problem
Conventional sitting apparatuses, particularly in public locations like conference and cinema halls, often cause discomfort and health issues due to fixed backrests that fail to harmonize with the user's body structure, leading to pressure on the sacral area and pain in the back and waist.
Innovation Solution
A multi-part sitting apparatus with synchronously moving seat and backrest components, featuring two or four parts that adjust to fit the user's body, including a medium seat part on a spring member to reduce pressure on the sacral area, providing ergonomic support and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the back rest is made as a single fixed part, then the structure is simple and stable, but it fails to harmonize with the user's body structure causing discomfort and pain
Solution Approach 1:
The back rest is divided into multiple independent parts (upper back rest part, lower back rest part, medium back rest part) that can move relative to each other. Each part can independently adjust to fit different regions of the user's back, providing ergonomic support while reducing complexity compared to a single complex adjustable mechanism.
Solution Approach 2:
The back rest parts are designed to be dynamically adjustable rather than fixed. The upper, lower, and medium back rest parts can move independently along defined paths to adapt to the user's body contours and movements, transforming the static structure into a dynamic system that responds to user needs.
2Ease of operation
If the seat is made as a single part, then the structure is simple, but it causes pressure on the sacral part during prolonged sitting
Solution Approach 1:
The seat is segmented into multiple independent parts (right seat part, left seat part, medium seat part) that can move relative to each other. The medium seat part specifically addresses the sacral area, while the right and left parts support the upper body, distributing pressure across multiple contact points and eliminating concentrated sacral pressure.
Solution Approach 2:
Different seat parts are designed with different movement characteristics and support properties. The medium seat part under the sacral region has specific movement capabilities to reduce pressure, while the right and left seat parts have different movement patterns to support the upper body, providing localized ergonomic solutions for different body regions.
3Ease of operation
If the back rest moves as a whole around the intersection of back rest and seat, then the mechanism is simple, but the back and waist parts cannot fully harmonize with the back rest
Solution Approach 1:
The back rest is segmented into upper, lower, and medium parts that can move independently rather than as a single unit. Each part follows its own movement path defined by specific axes, allowing independent adjustment to match different regions of the user's back and waist, achieving better body alignment through distributed movement.
Solution Approach 2:
The movement mechanism transitions from a single rotational axis to multiple independent movement dimensions. The upper back rest part moves around a first axis, the lower part around a second axis, and the medium part around a third axis, adding dimensional complexity to achieve precise alignment with the user's body contours.
4Ease of operation
If fixed back rests are used in public locations, then the device is simple and stable, but users suffer from back and waist pain during prolonged sitting
Solution Approach 1:
The seat and back rest are both segmented into multiple independently movable parts. The seat divides into right, left, and medium parts while the back rest divides into upper, lower, and medium parts, creating a modular structure that can adapt to user needs without requiring a completely complex overhaul of the basic seat design.
Solution Approach 2:
The previously static fixed back rest is transformed into a dynamic multi-part system where each segment can move independently. This dynamic capability allows the seat to adapt to prolonged sitting conditions by adjusting to the user's body movements and maintaining comfort over extended periods.
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 apparatus ensures full body support and reduces pressure on the sacral area, preventing long-term health issues by allowing harmonious alignment of the backrest and seat with the user's body, thereby enhancing ergonomics and comfort.
Implementation Method 1
medium part located on the spring member moving up and down and thus preventing pains that might occur on back and waist part by reducing the pressure on the sacral part
Data Source
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AI summary
The invention relates to a sitting apparatus (30) comprising a foot (34), a sitting part (33) located on the foot (34), where the person sits, a back rest part (32) connected to the sitting group (33) and where the person leans his/her back, arm rests (35) located on side parts of the sitting part (32), at least two back rest parts (7) connected onto back rest carrying profile (36) of the said back rest part (32) in a manner enabling limited rotation motion and conducting synchronous motion when the sitting person leans his/her back and thereby fully grasping the back of the person, at least two sitting parts (18) connected onto the fixing spindles (26) of the said sitting part (3) located on the sitting part carrying profile (17) in a manner limited motion is allowed there around when the person sits.