Magnetic Latch Arrangement for Sliding Wing Rebound Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing magnetic latch arrangements for sliding doors and windows often result in incomplete opening due to rebounding off end stops and require complex mechanisms that extend transversely, potentially damaging cavities, while also being costly and lacking a simple, clean design for indoor use.
Innovation Solution
A magnetic latch arrangement with a housing and latching mechanism that includes a magnetically movable latching member, a vertical latch moving mechanism, and a snib for secure operation, allowing the latching member to extend and retract without damaging the door cavity, and featuring an adjustable design for various door widths and a secure locking mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the latch extends transversely outwardly to latch with a strike, then the latching function is achieved, but the latch may damage the door cavity and the mechanism becomes complex
Solution Approach 1:
The latch member is configured to extend in the plane of the door (one dimension) and then move vertically (second dimension) to engage with the strike. This two-stage movement allows the latch to achieve secure engagement without requiring complex transverse extension mechanisms, thereby reducing overall device complexity while maintaining reliable latching function.
Solution Approach 2:
The latch member is designed with movable mounting that allows it to extend and retract dynamically. When the door moves into the locked position, the latch automatically extends to engage the strike; when the door opens, the latch retracts. This dynamic behavior eliminates the need for complex manual operation mechanisms while ensuring reliable latching.
2Device complexity
If the latch extends outwardly from the door in the plane of the door, then the mechanism is simpler, but further transverse movement is required to latch with the strike
Solution Approach 1:
The latch member is configured to automatically perform both the extension and vertical movement required for latching. As the door moves into the locked position, the latch member extends in the plane of the door and then automatically moves vertically to engage the strike without requiring separate manual operations. This self-service mechanism simplifies operation while maintaining secure latching.
Solution Approach 2:
The latch mechanism combines the extension movement (in the plane of the door) and the engagement movement (vertical transverse movement) into a single integrated mechanism. The latch member performs both movements sequentially as one unified action, eliminating the need for separate mechanisms for each movement type and thereby simplifying overall operation.
3Device complexity
If a magnetic latch arrangement is used, then the design is cleaner and simpler for indoor use, but the door rebounds off end stops and does not open completely
Solution Approach 1:
The magnetic latch arrangement incorporates a preliminary action that counteracts the rebound effect before it compromises door opening completeness. The magnetic attraction force is designed to hold the door firmly in the fully open position against the end stop, preventing rebound from causing the door to remain slightly ajar. This preliminary magnetic holding action ensures complete door opening while maintaining the simplicity of the magnetic latch design.
Solution Approach 2:
The magnetic latch system adjusts the magnetic field strength and engagement parameters to ensure proper door positioning. By optimizing the magnetic attraction force and engagement depth, the system prevents rebound from causing incomplete opening while maintaining the clean, simple design suitable for indoor use. The magnetic parameters are tuned to provide sufficient holding force at the end stop position.
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 ensures complete door opening without rebounding, provides a clean and simple latching system, reduces complexity and cost, and allows for easy adjustment to fit different door widths, while maintaining security through magnetic attraction and a snib mechanism.
Implementation Method 1
the latching mechanism is configured to move from the first position to the second position by magnetic force
Implementation Method 2
maintaining security through magnetic attraction
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A latch arrangement for a sliding wing has a latching member that is movable by magnetic force from first position in which it is at least partially retracted within a latch housing, to a second position in which it extends at least partially out of the housing, to be received in a strike. The strike comprises a magnet or ferromagnetic arrangement to attract the latching member into a receiving and engaging formation of the strike when the sliding wing is located at or adjacent the strike.