Adjustable Positioning Hinge With Segmented Friction Damping
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Solution Overview
Problem
Conventional positioning hinges fail to provide sufficient torsional friction and are difficult to assemble, limiting their ability to maintain doors or windows at specific angles, especially in environments requiring high frictional torque.
Innovation Solution
An adjustable positioning hinge is designed with plural friction damping pieces that fit into a sleeve, secured by a positioning pin and groove, allowing for adjustable torsional friction and easy assembly, enabling high torsional friction in both rotating directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a single friction damping piece is used in the hinge sleeve, then the structure is simple, but the torsional friction is insufficient and cannot be adjusted
Solution Approach 1:
The single friction damping piece is divided into multiple friction damping pieces (first friction damping piece and second friction damping piece) that can be independently adjusted. This segmentation allows the torsional friction to be enhanced and customized while maintaining a relatively simple overall structure by using identical modular components.
2Force
If the inner diameter of the friction damping piece is designed to be slightly smaller than the outer diameter of the circular shaft, then torsional friction is generated, but the assembly becomes difficult and the frictional torque cannot be easily controlled or adjusted
Solution Approach 1:
The friction damping pieces are designed with adjustable positioning holes that can be relocated along the axial direction. This dynamic adjustability allows the assembly to be easily disassembled and reconfigured, enabling control and adjustment of the frictional torque while maintaining the interference fit design for generating torsional friction.
3Force
If the friction damping piece is fitted in the hinge sleeve, then the positioning function is achieved, but the assembly difficulty increases and the torsional friction is limited by the structure and materials
Solution Approach 1:
The positioning hole is segmented into multiple selectable positions along the axial direction of the friction damping piece. This allows the assembly process to be simplified by selecting the appropriate positioning hole based on the required torsional friction level, while still achieving the positioning function within the hinge sleeve.
Solution Approach 2:
The positioning parameter (axial position of the positioning hole) is made variable with multiple selectable positions. By changing the positioning parameter, different levels of torsional friction can be achieved, and the assembly can be easily adjusted to meet different manufacturing and application requirements.
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 adjustable positioning hinge allows for easy assembly and customizable torsional friction, enabling doors or windows to be maintained at any required angle with sufficient mechanical strength for applications like yacht cabin doors or cabinet doors.
Implementation Method 1
the torsional friction generated between the friction damping piece and the circular shaft
Data Source
AI summary
An adjustable positioning hinge and an assembling method thereof are provided. The adjustable positioning hinge includes a first leaf set, a second leaf set, plural friction damping pieces, a positioning pin and a shaft. The first leaf set includes a first sleeve with a positioning groove concavely formed and disposed along an axial direction of the first sleeve. The plural friction damping pieces are fitted in the first sleeve and configured to form at least one adjustable sleeve set. Each of the plural damping pieces includes a positioning part engaged with the positioning pin accommodated in the positioning groove. The shaft is fixed to the second leaf set. The first leaf set is pivotally connected with the second leaf set via the shaft and the plural friction damping pieces, so that the first leaf set and the second leaf set are rotatable and positioned relative to each other.