Adjustable Chair Headrest Pivot Assembly for Stable Tilt and Height
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional chair headrests are inflexible, as they cannot be adjusted vertically or tilted to accommodate users of different heights and postures, leading to inadequate support and comfort for heads and necks.
Innovation Solution
A chair headrest design featuring a pivot member and fastener assembly that allows vertical adjustment and tilting, incorporating a damper for stability and a guide and stop member for precise positioning, enabling users to customize the height and angle for optimal comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the headrest is fixed on the support rack, then the structure is simple and stable, but the headrest cannot be adjusted vertically or in angle
Solution Approach 1:
The headrest is divided into multiple segments: the support rack, the headrest body, and the tilting mechanism with pivot member. This segmentation allows the headrest to be adjusted vertically by moving the support rack position while maintaining structural simplicity of each individual component.
Solution Approach 2:
The headrest incorporates a tilting mechanism with a pivot member that enables dynamic angle adjustment. The connection between the headrest body and support rack allows rotational movement, transforming the static fixed structure into a dynamic adjustable one while keeping the overall design relatively simple.
2Adaptability or versatility
If the support rack is fixed on the seat back, then the installation is simple and stable, but users with different heights cannot adjust the headrest vertically
Solution Approach 1:
The support rack is designed as a separate adjustable component that can be positioned at different vertical locations on the seat back. This segmentation allows users to adjust the headrest height by repositioning the support rack without complicating the overall adjustment mechanism.
Solution Approach 2:
The support rack acts as an intermediary component between the fixed seat back and the adjustable headrest body. It provides a simple interface that enables vertical position adjustment while maintaining stable connection to the seat back structure.
3Adaptability or versatility
If the headrest is fixed on the support rack, then the connection is simple and stable, but the inclined angle cannot be adjusted for different postures
Solution Approach 1:
The connection between the headrest body and support rack is made dynamic through the tilting mechanism. The pivot member enables rotational movement, allowing the headrest to tilt to different angles while maintaining a relatively simple connection structure without complex actuators or mechanisms.
Solution Approach 2:
The tilting function is extracted as a separate mechanism (pivot member) that is integrated into the connection between the headrest body and support rack. This extraction allows angle adjustment without complicating the overall connection structure, as the tilting mechanism operates independently within the existing connection framework.
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 design provides enhanced comfort and support for users by allowing adjustable height and tilt, improving stability and durability while maintaining a simple structure and low operational costs.
Implementation Method 1
A damper is arranged between the middle part and the rear-side part to provide a resistance for buffering during vertical movement of the front-side part and the middle part in relative to the rear-side part
Implementation Method 2
The mounting part and the pivot part are pivotally connected to each other so that the first portion and a second portion can rotate around an actuation axis
Data Source
AI summary
A chair headrest including a headrest, a pivot member and a fastener assembly is revealed. The headrest is disposed with a damper and a guide and stop member for improving vertical movement stability and safety during adjustment. The pivot member having pivotally connected first and second portions is arranged between the headrest and a seat back. The first portion includes a pivot part with two separate ends while the second portion has a mounting part with two apart ends. The pivot part fitted to the mounting part can be rotated around an actuation axis. The fastener assembly is set between two ends of the second portion and having a connection portion for connecting the two ends of the pivot part and the two ends of the mounting part and an actuator assembly for making the two ends of the mounting part apart to be in a pressed state.