Door And Window Locking Bolt With Dual-Position Ventilation
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Solution Overview
Problem
Existing locking devices for doors and windows, such as lift-and-slide doors, provide secure locking in the closed position but lack the ability to allow for secure ventilation without compromising security.
Innovation Solution
A locking device with a locking bolt that can be moved between retracted and extended positions, allowing for secure locking and ventilation, featuring a guide device with guide tracks and projections for precise guidance, and a mechanism to secure against unwanted rotation or displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional locking bolt is used, then secure locking in the closed position is achieved, but the ability to allow for secure ventilation is lost
Solution Approach 1:
The locking bolt is designed to be movable between different positions (retracted and extended) rather than fixed. The guide device with guide tracks and guide projections enables the bolt to dynamically change its position along the longitudinal axis, allowing it to adapt between locking mode (retracted) and ventilation mode (extended), thus providing both security and ventilation functionality
Solution Approach 2:
The locking device is designed to perform multiple functions: it can securely lock the door in the closed position by retracting the locking bolt into the housing, and it can enable controlled ventilation by extending the locking bolt outward. This multi-functional design eliminates the need for separate locking and ventilation mechanisms
2Adaptability or versatility
If the locking bolt is made movable between retracted and extended positions, then both locking and ventilation functions are enabled, but the device complexity increases
Solution Approach 1:
The guide device is segmented into guide tracks formed on the housing and guide projections formed on the locking bolt. This segmentation allows the guidance function to be distributed between the stationary housing and the movable locking bolt, simplifying the overall structure while enabling precise control of the locking bolt's movement
Solution Approach 2:
The guide projections act as intermediaries between the locking bolt and the guide tracks. These projections engage with the guide tracks to transmit and control the movement of the locking bolt, providing a simple yet effective mechanism for guiding the bolt between retracted and extended positions without requiring complex guidance systems
Data Source
Figure 1
Figure 2a~2c
Figure 3a~3b
AI summary
The invention relates to a locking device (10) for locking a displaceable leaf (116) to a frame (102) of a door or window arrangement (100), comprising a locking bolt (12), wherein the locking bolt (12) extends along a central longitudinal axis (16) and has a locking shaft (18) and a locking head (20), wherein the locking bolt (12) is guided with its locking shaft (18) in a channel (40) of a housing (14) extending along a housing axis (30) by means of a guide device (42) such that the locking bolt (12) is displaceable between a retracted position relative to the housing (14) and a position extended relative to the housing (14), such that the locking bolt (12) is rotatable in the retracted position and in the extended position between a first rotational position and a second rotational position,and that the locking bolt (12) is secured against displacement in the first rotational position, and rotation of the locking bolt (12) into the second rotational position releases displacement. A door or window arrangement (100) with such a locking device (10) is specified.