Single-Pivot Door Hinge in Cavity for Simplified Manufacturing
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Solution Overview
Problem
Existing door storage systems with external hinges are complex, expensive, and require precise machining, as they need multiple pivoting components and axes for a combination of pivoting and translational movements, making them costly and labor-intensive to manufacture.
Innovation Solution
A simplified bearing system where each hinge is located in a single cavity, with a single pivoting component, and a cover section that hides the hinge when closed, allowing for a pure pivoting movement and reducing manufacturing complexity by using symmetrical components and a frusto-conical bearing surface for strength, along with an elastic element for automatic closing and a guide bushing for reduced friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple pivoting components and axes are used to achieve combination of pivoting and translational movements, then the door can open and close, but the device complexity increases and manufacturing costs rise
Solution Approach 1:
The invention extracts the translational movement requirement from the hinge mechanism itself and relocates it to the cavity system. The hinge only performs pure pivoting motion, while the cavities in the jamb and door leaf provide the necessary translational adjustment through their relative movement during door opening/closing. This separation of functions simplifies the hinge to a single pivoting component with one axis.
2Ease of operation
If multiple pivot axes are used for combination movements, then the door can open and close, but the manufacturing precision requirements increase
Solution Approach 1:
The invention extracts the complex movement requirements from the hinge components and transfers them to the cavity geometry and positioning. The hinge itself only needs to accommodate a single pivot axis with standard machining tolerances, while the cavities are designed to provide the necessary movement freedom and positioning during door operation.
3Ease of manufacture
If hinges are located entirely outside both door leaf and frame, then installation is simple, but the hinges are always visible and aesthetics are compromised
Solution Approach 1:
The invention applies nesting by placing the hinge within a cavity in the jamb and another cavity in the door leaf. When the door is closed, the two cavities align and the hinge becomes hidden inside the door thickness. When the door opens, the cavities separate and the hinge becomes visible during operation but hidden when closed.
4Shape
If hinges are hidden in cavities during door closed position, then aesthetics are improved, but the distance between cavities changes during opening/closing requiring complex mechanisms
Solution Approach 1:
The invention extracts the adjustment for changing cavity distance from the hinge mechanism and places it in the cavity design itself. The cavities are shaped and positioned to automatically accommodate the changing distance between them during door movement, while the hinge only needs to provide pure pivoting motion around a fixed axis.
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 a more uncomplicated and cost-effective production method while maintaining operational reliability, enabling a hinge that can withstand heavy doors and reduce maintenance needs, with the added features of automatic closing and reduced friction, enhancing the door's operational life.
Implementation Method 1
a guide bushing for reduced friction
Implementation Method 2
an elastic element for automatic closing
Data Source
Figure 1~3
Figure 4~5
Figure 6~9
AI summary
The invention relates to a bearing system for a door, comprising: a frame, which acts as a blind frame for the leaf (1) of the door and is provided with at least two different cavities (3) which are produced in a jamb (2) of the frame; and at least two hinges of a plurality of hinges (4, 5, 6), which connect the leaf (1) and the jamb (2) to each other and define a pivot axis (A), wherein each hinge (4, 5, 6) comprises a pivotable component (7) which is connected to the leaf (1) and can pivot about a separate pivot axis. Each hinge (4, 5, 6) is arranged in a single cavity (3) and also comprises a pair of connecting bodies (8, 8; 8, 9; 8, 18), of which each is connected to the jamb (2) and by means of which the hinge (4; 5; 6) is connected to the frame. The pivotable component (7) is mounted such that it is pivotable relative to the connecting body pair (8, 8; 8, 9; 8, 18). The pivotable component (7) additionally has a cover portion (7a), the shape and dimensions of which are such that when the door is closed, said cover portion (7a) largely covers the opening of the cavity (3) in which the hinge (4, 5, 6) is arranged and the outer surface thereof and the outer surfaces of the jamb (2) and the leaf (1) are coplanar. The pivot axis (A) of the leaf (1) and the pivot axis of the pivotable component (7) coincide.