Magnetic Door Fitting Coupling for Energy Reduction
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Solution Overview
Problem
Existing door fittings require a large space, are expensive, cumbersome, and consume a lot of electrical energy due to the need for a spring element and motor-driven pretensioning, making them inefficient and difficult to handle.
Innovation Solution
A compact door fitting with a magnetic coupling system that uses a magnetized pin and adjusting disk to connect and disconnect the external handle from the lock mechanism, eliminating the need for a spring and reducing energy consumption by using an electromechanical actuator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring element and motor-driven pretensioning system are used to ensure secure coupling, then the coupling reliability is improved, but the device complexity and space requirements increase
Solution Approach 1:
The patent replaces the motor-driven pretensioning system with a purely mechanical spring-based pretensioning mechanism. The spring element (13) is pre-loaded in a stationary position and automatically engages with the coupling element (19) through mechanical interaction, eliminating the need for active motor control and reducing device complexity while maintaining coupling reliability
Solution Approach 2:
The spring element (13) is designed to automatically pretension itself in a stationary position without external actuation. When the coupling element (19) is inserted, the spring automatically engages and provides the necessary pretension force, making the system self-regulating and eliminating complex control mechanisms
2Reliability
If a spring element with motor-driven pretensioning is used, then secure coupling is achieved, but energy consumption increases
Solution Approach 1:
The patent eliminates the motor-driven pretensioning system and replaces it with a passive spring-based mechanism. The spring element (13) stores mechanical energy in a stationary position and releases it automatically when needed, eliminating continuous electrical energy consumption while maintaining secure coupling through mechanical pretensioning
3Reliability
If a spring element and motor system are used for coupling, then secure connection is ensured, but the device becomes cumbersome and expensive
Solution Approach 1:
The patent replaces the complex motor-driven system with a simple spring-based mechanical mechanism. The spring element (13) is pre-loaded and automatically engages with the coupling element (19) through straightforward mechanical interaction, making the device lighter, easier to handle, and more cost-effective while maintaining secure connection
Solution Approach 2:
The patent extracts and eliminates the motor-driven pretensioning system from the coupling mechanism, retaining only the essential spring-based mechanical pretensioning. This simplification removes unnecessary complexity, reduces cost, and improves ease of operation while preserving the core function of secure coupling
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 simpler, faster, and more user-friendly operation with reduced energy expenditure, ensuring secure engagement and disengagement of the door handle while extending battery life and improving handling convenience.
Implementation Method 1
The coupling comprises at least one magnetized pin (18) that interacts with the split lock follower and can be moved between a coupled position that connects the two nut parts (14, 16) to one another and a decoupled position that leaves the two nut parts (14, 16) separate from one another
Implementation Method 2
an actuating element (24) that is provided with appropriate magnets or is magnetized at least in sections to act on the magnetized element
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A door fitting comprises a coupling by which an outer handle, such as an external lever handle or the like, can be decoupled from a locking mechanism associated with the door and, in particular in combination with an access control system or the like, coupled to the locking mechanism. The outer handle is connected to a first cam section, and the locking mechanism is connected to a cam section of a split lock cam associated with the inner handle. The coupling comprises at least one magnetized element that interacts with the split lock cam and is movable between a coupled position connecting the two cam sections and a decoupled position keeping the two cam sections separate, and an actuating element that is provided with corresponding magnets or at least partially magnetized for applying magnets to the magnetized element.