Reclinable Office Chair Tilt Limiting for Stability and Grip
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Solution Overview
Problem
Conventional reclinable office chairs lack directional stability and anti-slip functionality when tilted, leading to instability and potential loss of balance during use.
Innovation Solution
Incorporation of an angle limiting element coupled to a reclination adjustment unit at the bottom of the office chair, featuring high-toughness carrying elements and anti-slip pads, which restrict tilt angles and enhance floor contact, ensuring safe tilting within a predetermined range and improved anti-slip performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the office chair is allowed to tilt freely in any direction, then the user can lean forward to work and relax legs, but the chair becomes unstable and the sitter must exert force for balancing
Solution Approach 1:
The reclination adjustment unit enables the chair to dynamically adapt its stability characteristics. When tilted within the safety range, the chair maintains stability through the adjustable mechanism, while exceeding the range triggers instability as a safety feature. The mechanism transitions from a static stable structure to a dynamic system that adapts its stability based on tilt angle.
Solution Approach 2:
The angle limiting element预先 (in advance) prevents excessive tilting by establishing a mechanical stop before the chair can become unstable. This preliminary constraint counteracts the potential harmful effect of over-tilting, allowing the chair to be tiltable while maintaining stability within safe limits.
2Ease of operation
If the angle of inclination is not restricted, then the chair can provide full range of motion for user comfort, but the chair becomes predisposed to overly large angle of inclination
Solution Approach 1:
The angle limiting element is pre-configured to establish the maximum safe tilt angle before operation begins. This preliminary setup ensures that the chair provides full range of motion within safe limits while automatically preventing operation beyond the reliable range, without requiring user intervention or complex control systems.
Solution Approach 2:
The reclination adjustment unit acts as an intermediary mechanism between the user's tilting action and the chair's structural response. It mediates the range of motion by allowing free movement within safe angles while blocking movement beyond the predetermined limit, thus ensuring both ease of operation and reliability.
3Adaptability or versatility
If the connecting element and carrying elements are not spaced apart, then the structure is more compact, but the chair cannot be tilted within a predetermined safety range
Solution Approach 1:
The bottom base is segmented into distinct functional elements: the connecting element, the carrying elements, and the angle limiting element. This segmentation allows each component to perform its specific function - the spacing between connecting and carrying elements enables tilt motion, while the angle limiting element provides the safety constraint. The segmentation transforms a compact but rigid structure into a functional system with controlled mobility.
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 allows for safe tilting in any direction within a predetermined safety range while maintaining stability and enhancing the anti-slip effect between the office chair and the floor, providing a comfortable and secure seating experience.
Implementation Method 1
enhancing the anti-slip effect which takes place between the office chair and the floor
Data Source
AI summary
A reclinable office chair includes a reclination adjustment unit coupled to a bottom base disposed at the bottom of the office chair and having an angle limiting element disposed below and spaced apart from a connecting element abutting against carrying elements. When a user sitting on the office chair tilts the office chair in a predetermined direction, the connecting element and the carrying elements, whose movement is restricted by a rim of the bottom base, are stopped from tilting further as soon as the angle limiting element tilts to an extent to come into contact with the rim, not only allowing the office chair in operation to be tilted within a predetermined safety range in any direction, but also enhancing the anti-slip effect which takes place between the office chair and the floor.