Multi-Point Window Locking with Rack-Free Anti-Jamming Mechanism
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Solution Overview
Problem
Existing burglar-resistant window and door locking systems are constructively complex, bulky, and prone to jamming due to poor mating between gear and rack components.
Innovation Solution
A locking device with a central body and a rotatable handle that controls a movable rod through a protuberance mechanism, avoiding direct manipulation of the rod or pins, ensuring smooth operation and compact design by eliminating the need for a rack, and incorporating a recess for the protuberance to prevent further sliding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a toothed element and rack system is used to convert handle rotation to rod translation, then the locking mechanism achieves secure closure, but the system becomes constructively complex and prone to jamming
Solution Approach 1:
The patent removes the rack component from the traditional toothed element and rack system. Instead of using a rack supported by the movable rod, the invention uses a recess directly in the central body that receives the protuberance, eliminating the rack and simplifying the constructive system while maintaining the conversion of rotational to linear motion.
Solution Approach 2:
The patent merges the recess function directly into the central body structure, combining what were previously separate components (central body and rack support) into a single integrated structure. This reduces the number of parts and simplifies the overall construction while maintaining the locking mechanism's reliability.
2Reliability
If a toothed element and rack system is used to control rod movement, then the locking mechanism functions securely, but the system becomes bulky
Solution Approach 1:
The patent extracts and removes the rack component from the system, eliminating the need for additional space to accommodate the rack structure. The recess in the central body occupies minimal space compared to a full rack system, thereby reducing the overall device volume while maintaining functional reliability.
Solution Approach 2:
The protuberance is received within the recess of the central body, creating a nested arrangement where one component fits within another. This nesting approach minimizes the external dimensions of the device and reduces the volume required for the locking mechanism while maintaining secure operation.
3Reliability
If a toothed element and rack system is used for handle rotation control, then the locking mechanism achieves secure closure, but jamming occurs due to poor mating
Solution Approach 1:
The patent removes the rack component that caused mating issues between the toothed element and rack. By eliminating the rack and using a simple recess-protuberance interface, the system avoids the jamming problems associated with poor mating between gear and rack components.
Solution Approach 2:
Instead of using a complex toothed element and rack system where the rack guides the toothed element, the invention inverts the approach by using a simple recess that receives the protuberance. This inverted simple interface eliminates the mating complexity and prevents jamming while maintaining operational smoothness.
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 provides a reliable, compact, and less jam-prone locking system with effective anti-burglary features by ensuring smooth operation and a compact design while maintaining security.
Implementation Method 1
The rotation of the protuberance around the axis Z commands the translation of the movable rod (31) according to the axis Y
Data Source
AI summary
Locking device comprising a central body (1) and a handle (2) with movement means (4) which engage a rod (3). Handle is rotatable between an open position and a closed position. In the closed position, FIG. 1 effective anti-effraction means are provided to block movement of the rod. Therefore, movement means (4) comprise a rotor (41) and a single protuberance (42) which engages a seat (312) of a mobile element (31) of the rod (3); Rotation of the handle to the closed position leads to blocking of the mobile element (31) by interaction an edge of the seat (312a) with a head (421) of the protuberance. Thereby, a locking device for windows or doors, such as sliding doors and windows, with burglary-resistant characteristics is provided.