Magnetic Rotary Latch Lock for Misaligned Door and Window Frames
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Solution Overview
Problem
Rotary latch locks are poorly adaptable due to the need for precise sizing of the latch and strike plate, and misalignments or spaces between the door or window leaf and frame affect efficient closure.
Innovation Solution
A magnetic lock with a rotary latch that includes a play mechanism allowing it to adapt to different strike plate shapes and orientations, and a control member to selectively lock the latch in an extracted position, enabling efficient closure despite misalignments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the latch and strike plate are precisely sized for accurate engagement, then the locking reliability is improved, but the adaptability to different strike plate configurations deteriorates
Solution Approach 1:
The latch is designed with rotational movement capability, allowing it to dynamically adjust its position and orientation to match different strike plate configurations. The latch can rotate around its mounting axis and adjust its extraction depth, transforming from a static precisely-sized component to a dynamic adaptable element that maintains reliable engagement across varied configurations.
Solution Approach 2:
The invention changes the parameters of the latch by introducing adjustable extraction depth and rotational angle. Instead of a fixed-position latch, the system allows variation in the latch's position parameters to accommodate different strike plate shapes, orientations, and depths, thereby resolving the contradiction between precise sizing and adaptability.
2Productivity
If the latch is fixed in a precise position for optimal engagement, then the closure efficiency is improved, but the tolerance to misalignments and spaces between leaf and frame deteriorates
Solution Approach 1:
The latch transitions from a fixed position to a dynamic adjustable position. It can rotate and adjust its extraction depth to compensate for misalignments and spaces between the door leaf and frame, maintaining efficient closure even when installation tolerances vary.
Solution Approach 2:
The latch serves multiple functions: it can engage with strike plates at different orientations (vertical, inclined), different depths, and different positions. This multi-functionality allows it to handle various misalignment scenarios while maintaining closure efficiency.
3Reliability
If a traditional rotary latch lock is used with precise sizing requirements, then the locking security is improved, but the ease of installation deteriorates
Solution Approach 1:
The dynamic adjustment capability of the latch eliminates the need for precise pre-sizing during installation. Installers can simply mount the latch and strike plate, then adjust the latch position to achieve proper engagement, significantly simplifying installation while maintaining locking security.
Solution Approach 2:
The latch performs self-adjustment during installation and operation. The adjustment mechanism allows the latch to automatically find its correct position relative to the strike plate, reducing the skill level and time required for installation while ensuring secure locking.
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 magnetic lock ensures effective locking and simplifies installation by adapting to various strike plate configurations, ensuring reliable closure and easy installation regardless of misalignments or space variations.
Implementation Method 1
magnetic element (12) mounted on the rotary latch 3 and configured to generate a magnetic attraction force adapted to promote a movement of the rotary latch 3 from the retracted position to the extracted position
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
A magnetic lock (1) for a door or window, comprising a lock body (2) installable inside an opening of a leaf and a rotary latch (3) hinged to the lock body (2). The rotary latch (3) is reversibly movable between a retracted position, in which it is housed inside the lock body (2), and at least one extracted position, in which it is at least partially projecting from the lock body (2) in order to be engaged inside a strike plate of the door or window, thereby defining a closed condition of the door or window. Furthermore, the magnetic lock (1) comprises locking means (4) selectively activatable on the rotary latch (3) to keep it in said at least one extracted position, thereby defining a locked condition of the rotary latch (3). In particular, the locking means (4) defines with the rotary latch (3) a play (G) such that the rotary latch (3) defines the closed condition of the door or window, the extracted position being adjusted based on the positioning of a limit stop portion of the strike plate.