Rotatable Chair Leg Supporter for Popliteal Pressure Relief
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Solution Overview
Problem
Conventional chair seat plates with mesh structures apply uneven pressure to the popliteal area due to fixed rectangular frames, failing to accommodate user body shape and posture effectively.
Innovation Solution
A leg supporter structure with a rotatable bar-shaped design mounted on a chair seat plate, featuring rotary shafts and spring mounting grooves, allowing the leg supporter to adjust according to the user's body shape and posture, minimizing pressure on the popliteal area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed rectangular frame with mesh material is used to form the seat plate, then the structural simplicity and ease of manufacture are improved, but the pressure distribution on the user's popliteal part becomes uneven and uncomfortable
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed, static leg supporter structure into a movable, dynamic one. The leg supporter is equipped with rollers that can move along guide rails, allowing it to automatically adjust its position and angle according to the user's body shape and posture. This dynamic adjustment capability enables the leg supporter to adapt to different users and postures, distributing pressure evenly on the popliteal part while maintaining ease of manufacture through the use of simple mechanical components like rollers and guide rails.
2Device complexity
If a fixed rectangular frame structure is used, then the device complexity is reduced, but the adaptability to different user body shapes and postures is poor
Solution Approach 1:
The patent implements dynamics by enabling the leg supporter to move and adjust its position automatically. The roller mechanism allows the leg supporter to slide along the guide rails, adapting to various user body shapes and postures without requiring complex control systems. This maintains relatively simple device complexity while significantly improving adaptability.
Solution Approach 2:
The leg supporter structure employs self-service through its automatic adjustment mechanism. When a user sits on the chair, their body weight and posture automatically position the leg supporter at the correct location and angle via the roller-guide rail system, without requiring manual adjustment or external control. This self-adjusting capability enhances adaptability to different users while keeping the device complexity low.
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 leg supporter structure provides comfortable and stable support to the popliteal area by adjusting pressure based on the user's position, enhancing the overall seating experience by accommodating varying postures and body shapes.
Implementation Method 1
both ends of a spring applying an elastic force toward an upper side are respectively fixed at predetermined positions of the leg supporter
Data Source
AI summary
A leg supporter structure for a chair seat plate, in which a leg supporter having a movable structure is mounted on a front end of a frame of a seat plate of a chair so that the leg supporter is rotated according to a user's body shape or posture, thereby softly supporting the user's popliteal part by minimizing pressure applied to the user's popliteal part. The leg supporter structure for a chair seat plate is applied to a chair seat plate to which a mesh member is combined with a frame of a predetermined shape, and includes: a lower frame of a rectangular shape; a U-shaped upper frame mounted along the upper surface of an outer wall of the lower frame; and a leg supporter of a bar shape which is mounted at an open front end of the upper frame to be selectively rotatable through rotary shafts disposed at both ends.