Integrated Window Locking Profile with Four-Bar Linkage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing window and door locking mechanisms require complex assembly and multiple components, which can be cumbersome and less reliable, and often compromise on ventilation and structural integrity.
Innovation Solution
A locking mechanism where the profiled bar forms and supports movable locking elements, eliminating the need for separate locking elements and incorporating a four-bar linkage chain with a toggle lever and stop for enhanced stability and force absorption, allowing the web to engage behind a locking edge for secure locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate locking elements and multiple components are used, then the locking mechanism can be implemented, but the assembly becomes complex and installation becomes cumbersome
Solution Approach 1:
The locking element is integrated directly into the sash profile, merging the locking function with the structural component. This eliminates separate locking components and simplifies assembly while maintaining reliable locking through the profile's inherent geometry and material properties
Solution Approach 2:
The sash profile serves multiple functions: it provides structural support, enables ventilation through integrated seals, and incorporates the locking mechanism. This multi-functionality reduces the number of separate components needed while maintaining system reliability
2Reliability
If additional circumferential seals are installed, then the sealing between sash and frame is improved, but the ventilation capability is compromised
Solution Approach 1:
The seal is designed to be dynamically controllable, transitioning between sealed and vented states. The integrated locking mechanism includes seal elements that can be selectively activated or deactivated based on whether locking or ventilation is required, allowing the system to adapt to different operational modes
Solution Approach 2:
The sealing system is segmented into multiple independent seal elements distributed around the sash-perimeter. This allows selective activation of specific seal sections - some seals remain active for weatherproofing while others can be opened for ventilation, providing localized control over sealing and ventilation functions
3Ease of operation
If locking elements are pivotally mounted with film hinges, then the locking mechanism can pivot and engage, but the design becomes complex and post-processing increases
Solution Approach 1:
The locking element is merged with the sash profile as an integrated component rather than a separately mounted element. The profile itself forms the locking structure through its geometry, eliminating the need for separate hinges and mounting mechanisms while maintaining smooth locking engagement
Solution Approach 2:
The profile structure serves its own locking function through its inherent geometry and material properties. The integrated design allows the profile to automatically engage and disengage without requiring external hinges or complex mounting hardware, simplifying manufacturing and reducing post-processing
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
This design simplifies installation, reduces post-processing, and provides a reliable, less disruptive locking system that maintains structural integrity and improves ventilation by minimizing additional seals, while ensuring stability and efficient force absorption.
Implementation Method 1
The locking element is designed as part of a four-bar linkage chain with a toggle lever and stop
Implementation Method 2
The bridge, as a rocker arm, is a stiffened section of a multi-link chain, and with a toggle lever which, in the extended position, leads to the bridge bearing against the locking edge
Implementation Method 3
This second sealing lip, which is elastic, freely movable when the window is closed, and positioned at an acute angle to the first sealing lip. This angle ensures that when a certain pressure differential is exceeded between the outside and inside of the window, the air passages are at least partially closed
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a window or door with a frame 10 and a sash 3, wherein several profile bars are assembled to form the frame 10 and sash 3, and wherein at least one web 27 of the sash 3 or frame 10 rests against the frame 10 or sash 3 between the sash 3 and frame 10, the profile bar having several channels separated by longitudinal walls and being manufactured by an extrusion process, resulting in the longitudinal walls having constant wall thicknesses along its longitudinal axis. To avoid complex assembly of hardware components, the web 27 is connected to a rigid structure of the profile bar by hinges 15, 25, 26 formed integrally from the longitudinal walls. In a first position, the web 27 rests against the sash 3 or frame 10, and in a second position, it is spaced apart from it.