Compact Door Hinge With Rear-Panel Inversion and Sleeve Adjustment
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Solution Overview
Problem
Existing door hinges for concealed installation are either too long due to the need for adjustment mechanisms, compromising durability, or they require long fastening plates that make the hinge less compact and less stable.
Innovation Solution
A compact door hinge design where one receiving body is attached to the rear panel instead of the front, with screws passing through the front panel and into the rear, allowing for adjustment by sliding on sleeves and using an adjusting spindle, and featuring countersunk screws for optimal alignment and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiving body is attached to the front panel as in conventional door hinges, then the adjustment mechanism can be arranged within the receiving body, but the door hinge becomes too long which compromises durability
Solution Approach 1:
The receiving body is inverted from the conventional front-panel attachment to rear-panel attachment. The rear panel is arranged on the shoulder of the receiving body, and fastening screws pass through the front panel, boss, and rear panel to secure the receiving body to the door element. This inversion allows the adjustment mechanism to be positioned more compactly within the door element thickness, reducing the overall door hinge length while maintaining durability.
2Stability of the object's composition
If long fastening plates are used to attach the receiving body to the door element, then the attachment is stable, but the door hinge becomes less compact
Solution Approach 1:
The attachment structure transitions from using long fastening plates extending outward to using fastening screws that pass through multiple components (front panel, boss, rear panel) in the thickness direction of the door element. This dimensional change allows stable attachment without increasing the lateral dimensions of the door hinge, achieving both stability and compactness.
3Adaptability or versatility
If the receiving body is attached to the front panel, then the structure is simple, but the adjustment range and stability are limited
Solution Approach 1:
The attachment structure is segmented into multiple functional components: front panel, boss with threaded bore, rear panel on the shoulder, and fastening screws. This segmentation allows the receiving body to be securely attached to the door element while providing adjustment capability through the threaded bore and adjustment spindle mechanism, achieving both simplicity and adaptability.
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 achieves a compact, stable, and adjustable door hinge that can be installed in both the door leaf and frame, ensuring high stability and allowing for 180° rotation, with improved load transfer and adjustment range.
Implementation Method 1
an adjusting spindle (23) which is supported in the front panel (18) and the rear panel (40) and by means of which the receiving body (4) can be moved on the sleeves (49)
Implementation Method 2
the receiving body (4) can be fastened to the door leaf or the door frame by means of at least one screw (47) passing through a hole (46) in each of the rear plates (40)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The hinge has two hinge parts (1, 2) comprising respective receiving bodies (3, 4) with respective end hubs (41). Back plates (40) are located at the hubs of one of the receiving bodies and provided with a set of holes (46) for fastening the receiving body at a door leaf or a door frame using screws (47). Front plates (18) are arranged on sides of the hubs lying opposite to the back plates. The front plates and the hubs comprise respective holes (45, 56) congruent to the holes of the back plates. The screws are insertable into the hinge via the holes of the front plates and the hubs. The screws are formed as sleeves.