Integrated Window Handle Security Cover with Lateral Lock

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Solution Overview

Problem

Existing safety devices for window or door handles are either too bulky, expensive, or impractical for residential use, especially when they consist of multiple separate parts, and fail to provide a secure and unobtrusive solution for flat handles used in folding systems.

Innovation Solution

A slim and flat safety device with integrated locking elements and a cylinder lock within a single removable cover, allowing for easy installation and use, with locking elements that can be rotated and securely attached to the handle or door, ensuring no loose parts when not in use, and featuring a spring-biased bolt mechanism for easy engagement and disengagement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple separate parts (cover, locking element, lock) are used to secure the handle, then security is improved, but device complexity and ease of storage deteriorate

Engineering Contradiction:

ImprovesecurityVSAvoidnumber of parts

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the cover, locking element, and cylinder lock into a single integrated security device. The cover serves as both the protective enclosure and the mounting structure for the lock, while the locking element is positioned to engage with the handle through the cover. This integration eliminates the need for separate components, resolving the contradiction between security (achieved through multiple functions) and device complexity (reduced to one piece).

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If a robust locking mechanism with multiple components is used, then security is improved, but ease of operation and storage deteriorate

Engineering Contradiction:

ImprovesecurityVSAvoidease of use

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

By merging all functional elements into one integrated cover assembly, the device achieves security through design rather than through multiple separate components. The single cover with integrated lock and locking element provides both security and ease of operation, as users only need to manipulate one component rather than assembling or coordinating multiple parts.

Inventive Principle:

Principle #5Merging (Combining)

3Device complexity

If the lock is integrated into the cover, then device complexity is reduced, but the cover depth increases

Engineering Contradiction:

Improvenumber of partsVSAvoidcover depth

Core Design Contradiction:

Device complexityVSLength of moving object

Solution Approach 1:

The patent positions the cylinder lock laterally within the cover rather than extending it deeply in the primary direction. The locking element engages with the handle through a lateral or radial movement within the cover's depth, allowing the lock mechanism to be accommodated in a compact footprint. This dimensional arrangement reduces the cover depth while maintaining the integrated design.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

4Adaptability or versatility

If the cover is made slim and flat, then adaptability to folding systems is improved, but space for integrated locking mechanism deteriorates

Engineering Contradiction:

Improveadaptability to folding systemsVSAvoidspace for lock

Core Design Contradiction:

Adaptability or versatilityVSVolume of stationary object

Solution Approach 1:

The locking mechanism is arranged to utilize lateral space and radial movement within the slim cover profile. The cylinder lock is positioned such that its operational dimensions are perpendicular to the cover's primary depth direction, allowing the mechanism to function within a minimal depth envelope suitable for folding system applications.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The cover is designed with localized features at specific positions to accommodate the locking mechanism's critical dimensions, while maintaining an overall slim and flat profile. The locking element and cylinder lock are positioned in regions where space is optimally utilized, allowing the cover to remain compact while providing sufficient room for the locking function.

Inventive Principle:

Principle #3Local quality

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 secure, easy-to-use, and visually unobtrusive safety device that maintains a slim profile, ensuring unauthorized operation is prevented while being easy to stow and retrofit, without compromising the depth requirements of folding systems.

Implementation Method 1

featuring a spring-biased bolt mechanism for easy engagement and disengagement

Methodology Applied

Scientific EffectSpring mechanism: Spring

Data Source

PatentEP2746496B1Securing device for a window or door handle

Publication Date: 2020.10.28 SOLARLUX ALUMINUM SYST

Figure 1a~1b
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AI summary

The device has a cover (6) enclosing a handle (1) in a mounted position and comprising two locking elements (9). A lock (7) is provided secure the cover on the handle in mounted position and release the cover from handle for removing cover from handle. A counter portion (5) is located on the handle, a handle fixture, a door or window. Counter portions are matched and interacted with the locking elements. One locking element is a locking bar (10) of the lock.