Adjustable Chair Padding Structure for Waist Support and Posture Correction
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Solution Overview
Problem
Conventional chair padding structures fail to adequately support the user's waist, leading to discomfort and fatigue, and are not adjustable for height, causing improper posture and discomfort for users of varying heights.
Innovation Solution
A padding structure for a chair featuring a back support with foam, guiding lines connected to resilient members, and an adjustable member that allows the resilient members to change their curvature, providing complete waist support and correcting posture by adjusting the radii of curvature to match the user's dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional back support with foam is used, then the chair provides basic seating comfort, but it cannot adequately support the user's waist, leading to fatigue
Solution Approach 1:
The patent applies the dynamics principle by making the back support structure adjustable and adaptable to different user needs. The resilient members can dynamically change their radii of curvature through the guiding lines mechanism, allowing the chair to adapt to various waist sizes and support requirements, transforming a static foam structure into a dynamic support system that actively responds to user posture
Solution Approach 2:
The back support is segmented into multiple functional components: foam layer, resilient members, guiding lines, and adjustable members. This segmentation allows each component to perform its specific function - the foam provides base comfort, while the resilient members with guiding lines provide adjustable waist support, resolving the contradiction by adding targeted functionality without requiring complete structural redesign
2Adaptability or versatility
If the chair back support is fixed in shape, then the structure is simple, but it cannot correct improper posture or adapt to different user heights
Solution Approach 1:
The adjustable members can modify the radii of curvature of the resilient members, transforming a fixed geometric structure into a dynamic one that adapts to different user heights and postures. This dynamic adjustment capability enables posture correction while maintaining reasonable structural complexity through the use of simple mechanical adjustment components
Solution Approach 2:
The patent changes the geometric parameters of the back support by allowing the resilient members to vary their radii of curvature. This parameter change enables the same structure to serve multiple users with different heights and posture requirements, achieving versatility without requiring multiple different chair models or complex reconfiguration systems
3Adaptability or versatility
If the chair is not adjustable for height, then the structure remains simple, but users of varying heights experience discomfort and improper posture
Solution Approach 1:
The adjustable members serve multiple functions: they control the radii of curvature of the resilient members for posture correction, and they effectively adjust the chair's adaptability to different user heights. This multi-functionality allows a single mechanism to address both posture and height adaptability issues without requiring separate adjustment systems for each function
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 solution effectively supports the user's waist and corrects improper posture by dynamically adjusting the curvature of the resilient members to fit the user's shape, enhancing comfort and usability across different heights.
Implementation Method 1
a resilient member which is defined between the back support and the foam to change its radii of curvature so as to bend the foam, thus supporting the user's back
Data Source
AI summary
A padding structure for a chair includes a back support, a seat plate, a foam disposed on the back support, two guiding lines mounted on the back support, and two guiding lines mounted on the seat plate. Each guiding line of the back support and the seat plate is connected with a resilient member to control flexibility of the resilient member. An adjustable member is used to control the expansion and retraction of the guiding lines to drive the resilient members to change their radii of curvature, correcting the user's improper posture.