Angle adjustment system
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Solution Overview
Problem
Existing seat angle adjustment systems face challenges in balancing structural strength, weight, cost, and complexity, particularly in integrating motor-assisted adjustments that compromise aesthetic and comfort requirements.
Innovation Solution
An angle adjustment system with a simplified design comprising a headrest and backrest section connected by brackets and an adjustment device, using plastic parts molded in a single step, and a linear actuator for effortless adjustment, reducing component count and ensuring structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional wooden seats are used to ensure high strength, then structural strength is improved, but manufacturing complexity and labor costs increase due to complex cutting processes
Solution Approach 1:
The patent replaces traditional mechanical wood cutting and assembly processes with injection molding technology. The bracket is molded as a single integrated plastic component, eliminating the need for complex wood cutting, plywood layering, and manual assembly operations while maintaining structural strength through the inherent properties of molded plastic parts.
Solution Approach 2:
The patent changes the material parameter from wood to plastic, and changes the manufacturing process parameter from mechanical cutting to injection molding. This parameter transformation allows the bracket to be produced as a single integrated component with complex geometries that would be difficult or impossible to achieve through traditional wood working methods.
2Ease of operation
If an angle adjustment system with motor assist is added to achieve effortless adjustment, then ease of operation is improved, but device complexity and component count increase
Solution Approach 1:
The patent extracts the motor assist component from the angle adjustment system, retaining only the essential mechanical adjustment mechanism. This extraction simplifies the overall system by removing the complex motor, control electronics, and associated components while maintaining the core functionality of angle adjustment through a simplified manual mechanism.
3Weight of moving object
If the number of components is reduced to minimize weight and cost, then weight and cost are improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent merges multiple separate components into a single integrated bracket component through injection molding. This consolidation reduces the total number of parts, decreases assembly operations, and lowers overall system weight while the molding process inherently provides the necessary precision through mold-based dimensional control and consistent material properties.
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 system achieves efficient angle adjustment with fewer components, lower labor costs, and enhanced durability while maintaining high structural strength and comfort, addressing the conflicts of weight, cost, and complexity in conventional designs.
Implementation Method 1
The first bracket and the second bracket are connected via a pivot shaft. When the first adjustment part moves relative to the second adjustment part, the first bracket pivots relative to the second bracket.
Data Source
AI summary
This application relates to an angle adjustment system comprising a headrest section with a headrest rear panel, headrest side plates, and a first bracket connecting the headrest rear panel and headrest side plates; a backrest section with a backrest rear panel, backrest side plates, and a second bracket connecting the backrest rear panel and backrest side plates; and an adjustment device having a first adjustment part connected to the first bracket and a second adjustment part connected to the second bracket, the two parts being capable of moving relative to each other. When the first adjustment part moves relative to the second adjustment part, the first bracket pivots relative to the second bracket. This system is used to adjust the pitch angle of a seat headrest and has high structural strength and few components.