Adaptable Window Latch Coupling Block for Bolt Engagement

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Solution Overview

Problem

Existing locking mechanisms for windows and doors face challenges in accommodating various fold profiles and manufacturing tolerances, leading to a need for numerous base bodies and tools, and lack of burglary security due to unsupported latch engagements.

Innovation Solution

A component system comprising a lining piece and a coupling block with latching pins and bores, where the coupling block can be supplemented with cantilevers and adapters to fit different fold geometries, ensuring secure and adaptable locking without requiring extensive tooling changes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a locking mechanism is designed to accommodate various fold profiles and manufacturing tolerances, then adaptability is improved, but device complexity increases due to the need for numerous base bodies and tools

Engineering Contradiction:
Improveadaptability to various fold profilesVSAvoidnumber of base bodies and tools
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a universal base body design that can accommodate multiple fold profiles through a standardized coupling block interface. The coupling block serves multiple functions: it provides a standardized mounting interface, accommodates position adjustments via spacers, and supports various latch engagement configurations. This multi-functional approach eliminates the need for multiple specialized base bodies for different profiles.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The locking mechanism is divided into separable components: a universal base body, a standardized coupling block, and interchangeable spacers. This segmentation allows the spacers to be exchanged to accommodate different fold profiles and manufacturing tolerances without replacing the entire base body or coupling block, thereby reducing device complexity while maintaining adaptability.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If the latch engagement is supported only by webs of plugs, then ease of manufacture is improved, but reliability deteriorates due to easy shifting and lack of burglary security

Engineering Contradiction:
Improveassembly from sheet metal partsVSAvoidburglary security
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The coupling block is constructed as a composite structure combining sheet metal components with reinforcement elements. The base body and plugs remain manufacturable from sheet metal, but the coupling block incorporates rigid support structures and latching pins that provide enhanced mechanical strength and anti-burglary security while maintaining ease of manufacture through standardized metal forming processes.

Inventive Principle:
Principle #40Composite materials

3Adaptability or versatility

If exchangeable spacers are used to compensate for manufacturing tolerances, then adaptability is improved, but device complexity increases due to additional components

Engineering Contradiction:
Improvecompensation for manufacturing tolerancesVSAvoidnumber of spacer variants
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The spacers are designed with variable thickness parameters to compensate for manufacturing tolerances in fold profiles. By changing the thickness parameter of the spacers rather than creating entirely different components, the system achieves adaptability with minimal complexity. The standardized interface and simple spacer geometry allow for easy exchange while maintaining a limited number of spacer variants.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP3816375A1Component system for a latch engagement
Publication Date: 2021.05.05 SIEGENIA AUBI KG
  • EP3816375A1 patent drawingFigure 1~3
  • EP3816375A1 patent drawingFigure 4~5
  • EP3816375A1 patent drawingFigure 6~8

AI summary

The invention relates to a component system for a bolt engagement of a window or door, wherein the bolt engagement (1) has bolt pockets (2, 3, 20) for engagement of a bolt element and is mounted on a frame rebate (35) of the frame and consists of a metal body (5) having the bolt pockets (2, 3, 20) and a lining piece (4) supporting the metal body (5) on the frame rebate (35), wherein the lining piece (4) has grooves or ribs for alignment and adaptation to grooves and/or ribs of the rebate, wherein the lining piece (4) has bores (10) for fastening screws that pass through the metal body (5) and the lining piece (4) and the lining piece (4) can be snapped into the metal body.To facilitate adaptation to different rebate geometries, the lining piece (4) is designed to be coupled to a coupling block (13), which can be supplemented by means of cantilever arms (17) and which cantilever arms (17) have stops (16, 29) for contact with webs of the frame rebate (35) or for engagement in grooves.