Automatic Lock Coupling Device for Tight Sealing
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Solution Overview
Problem
Existing locking mechanisms fail to provide adequate sealing and can be impeded by high sealing pressure, leading to incomplete contact between sash and frame, compromising security and functionality.
Innovation Solution
A locking mechanism with a cylindrical bolt mounted in a rotationally fixed manner, featuring axially running tightening bevels and a coupling device that allows for immediate release and secure closure, separating automatic and tight-closing functions via a cylinder, and utilizing a single connecting rod for enhanced force application and distance correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking mechanism with multiple connecting rods and slides is used, then automatic operation and secure locking are achieved, but device complexity increases and manufacturing cost rises
Solution Approach 1:
The patent combines multiple connecting rods into a single integrated connecting rod that performs both automatic locking and tight-closing functions. The coupling piece integrates the release actuation surface and coupling functionality, eliminating the need for separate slides and reducing the number of moving parts while maintaining secure locking reliability
Solution Approach 2:
The single connecting rod is designed to perform multiple functions: it acts as both the automatic locking actuator and the tight-closing mechanism. The coupling piece serves both as a release actuation surface and as a coupling element, demonstrating multi-functionality that reduces component count without compromising security
2Reliability
If sealing pressure is increased to ensure tight closure, then sealing function improves, but the automatic locking mechanism may be impeded by incomplete contact between sash and frame
Solution Approach 1:
The patent separates the automatic locking function from the tight-closing function into distinct operational phases. The automatic locking phase uses lower force to engage the bolt, while the tight-closing phase applies higher sealing pressure through the coupling piece mechanism, preventing interference between the two functions
Solution Approach 2:
The coupling piece is designed to preliminarily engage with the connecting rod at a controlled position, enabling the automatic locking mechanism to operate first under reduced force conditions. The tight-closing action is then activated subsequently through the coupling piece, ensuring that high sealing pressure is applied only after automatic locking is complete
3Ease of manufacture
If the bolt is mounted in a rotationally fixed manner with axially running tightening bevels, then ease of manufacture improves, but the ability to correct distance caused by twisting is reduced
Solution Approach 1:
The patent introduces a dynamic coupling piece mechanism that can adapt to twisting conditions. The coupling piece is designed to engage with the connecting rod in a way that allows for positional adjustment, enabling the system to compensate for distance variations caused by sash twisting while maintaining the simple rotationally fixed bolt mounting
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
Ensures secure and tight locking with improved sealing, allowing for complete contact between sash and frame, even under twisting conditions, while reducing the need for slides and maintaining ease and cost-effectiveness in manufacturing.
Implementation Method 1
A compression spring (8) acts on the main lock slide (7)
Implementation Method 2
A torsion spring (25) acts on the locking slide (23)
Implementation Method 3
The locking part is a cylindrical bolt which is mounted in a rotationally fixed manner and has axially running tightening bevels
Data Source
Figure 1a~1b
Figure 2
Figure 3a~3b
AI summary
The invention relates to a locking device (50) with a main lock (51) having a latch (2) and with a bolt part (57), which bolt part (57) together with the latch (2) and driven by a connecting rod can be closed from a forward-closed position and, when closing a door comprising a leaf and frame equipped with the lock (50), is driven by a trigger (3) and a power storage device (8), forward-closes from a retracted position, wherein the trigger (3) is a spring-loaded pivot lever, pivotable in the faceplate plane, which holds the connecting rod (7, 53, 54) in a charged position and holds the power storage device (8) in its charged position, and upon contact with a frame-side contact surface releases a main lock slide (7) coupled to the connecting rod (53, 54) and with a sensing element (44) that scans the frame-side stop surface of the door.In order to enable a tight-closing locking mechanism in addition to an automatic operation in which the wing is securely locked, a coupling device is provided between the main lock slide and a cylinder-driven transmission (31), which couples with the drive rod via the cylinder during pre-locking and enables a movement of the drive rod in the locking direction, which further moves the bolt part (57) in the pre-locking direction.