Magnetic Door Locking with Air Gap to Reduce Noise and Wear
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Solution Overview
Problem
Existing door arrangements with magnetic locking devices suffer from direct mechanical contact leading to noise and potential damage, and they are not compatible with door seals, especially when used in interior doors made of glass where traditional fittings cannot be inserted.
Innovation Solution
A magnetic locking device where the magnet arrangement is positioned on the side leg of the door frame, creating a small gap with the magnetic material on the door leaf, allowing for secure holding without direct contact, and enabling integration with a door seal for glass doors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If direct mechanical contact is made between the magnet arrangement and the magnetic material section, then the locking force is strong, but noise is generated and damage may occur with long-term use
Solution Approach 1:
The patent introduces an air gap of 0.5-10mm as an intermediary space between the magnet arrangement and the magnetic material section. This gap prevents direct mechanical contact while maintaining sufficient magnetic attraction force, thereby eliminating noise and preventing damage from repeated contact during door operation.
Solution Approach 2:
The patent replaces direct mechanical contact with magnetic field interaction. Instead of mechanical components touching to create locking force, the system uses magnetic attraction across a small air gap, substituting mechanical contact with a non-contact magnetic field-based locking mechanism.
2Device complexity
If a magnetic locking device with direct contact is used, then the locking mechanism is simple, but it is not compatible with door seals
Solution Approach 1:
The air gap acts as a mediator that allows both the door seal and the magnetic locking device to coexist. The seal can be positioned in the door frame's stop structure while the magnet arrangement remains on the side leg, with the gap ensuring no interference between the seal and magnetic components during door closing.
Solution Approach 2:
The patent positions the magnet arrangement on the side leg in a location that is spatially separated from the door seal's position in the stop structure. By utilizing different spatial dimensions and locations on the door frame, both the seal and magnetic locking device can function simultaneously without conflict.
3Device complexity
If traditional fittings are inserted into a thin glass door, then the door structure is simple, but the fittings cannot be properly installed due to small thickness
Solution Approach 1:
The patent replaces traditional mechanical fittings (hinges, locks, handles) that require insertion into the glass door with a magnetic locking system. The magnet arrangement is mounted on the door frame's side leg, and the magnetic material section is attached to the glass door edge, eliminating the need to drill or insert fittings into the thin glass.
Solution Approach 2:
The magnetic field acts as an intermediary that provides locking functionality without requiring physical penetration or insertion into the glass door. This allows the thin glass structure to remain intact while still achieving secure door closure through magnetic attraction.
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 solution provides a wear-free, maintenance-free locking mechanism that is optically unobtrusive, capable of holding the door securely in a closed position without noise or damage, and allows for easy opening without mechanical latches, while being compatible with door seals.
Implementation Method 1
the door leaf is held in a closed position by magnetic forces
Data Source
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AI summary
The invention relates to a door arrangement with a door frame (1), a door leaf (2), door hinges (3) and a magnetic locking device (4), the door hinges (2) being fastened to a hinge side of the door leaf (2) and the door leaf ( 2) pivotably connect to the door frame (1), the door frame (1) having a step (6) as a stop for the door leaf (2) in the closed position, which has a stop leg (16) covering the door leaf (2) in the closed position and a side leg (8) running outside the door leaf (2), and wherein the locking device (4) has a magnet arrangement (7) on the door frame (1) and a section (10) made of magnetic material on an edge of the door leaf (2). includes. According to the invention, the magnet arrangement (7) is arranged on the side leg (8) in such a way that a free gap remains between the magnet arrangement (7) and the section (10) made of magnetic material arranged at the edge of the door leaf (2).