Adapter Profile for Espagnolette Faceplate Attachment

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Solution Overview

Problem

Existing fastening devices for faceplates on doors and windows are complex and costly to install, often requiring screws and rivets, and are not suitable for wooden frames which lack elastic material for latching hooks.

Innovation Solution

A fastening device featuring an adapter profile with a receiving trough and material constriction, allowing for a simple and secure attachment of the faceplate to the door or window, using a form-fitting connection that can be easily assembled and disassembled by bending, and optionally incorporating sealing edges and recesses for locks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the faceplate is screwed to the door or window, then the attachment is secure, but the installation effort and cost increase

Engineering Contradiction:

Improveattachment securityVSAvoidinstallation effort

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent replaces the screw-based mechanical fastening system with a clip-based insertion system. The adapter profile is simply inserted into the profile groove and held in place by the form-fitting connection, eliminating the need for screws, rivets, or other complex fastening mechanisms while maintaining secure attachment.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The adapter profile's own elastic material properties are utilized to create the latching mechanism. The material constriction allows the adapter profile to be bent slightly during insertion, and the elastic recovery of the material automatically secures the form-fitting connection without requiring additional fastening components or tools.

Inventive Principle:

Principle #25Self-service

2Ease of operation

If a latching hook is used for attachment, then the assembly is simple, but the frame profile must be sufficiently elastic which wooden frames lack

Engineering Contradiction:

Improveassembly simplicityVSAvoidcompatibility with wooden frames

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The adapter profile serves as an intermediary component that bridges the gap between the rigid wooden frame and the faceplate. Instead of requiring the wooden frame itself to be elastic for a latching hook, the adapter profile made from elastic material provides the necessary flexibility for the form-fitting connection, while the wooden frame simply provides the profile groove for insertion.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of manufacture

If standardized fittings are used for different doors and windows, then cost is reduced, but the attachment method must be universally applicable to various frame types

Engineering Contradiction:

Improvecost effectivenessVSAvoidcompatibility with various frame types

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The adapter profile is designed with a universal interface that can be inserted into profile grooves of various doors and windows regardless of material (wood, metal, plastic). The form-fitting connection works with any frame type that has a compatible profile groove, allowing standardized fittings to be used across different applications while maintaining secure attachment through the elastic material's form-fitting connection.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP2460961B1Fixing device of a face plate of an espagnolette

Publication Date: 2018.10.17 WINKHAUS

Figure 1~2
Figure 3~4

AI summary

The device has a driving rod (6) guided into a face plate rail (5) in a longitudinally displaced manner, and an adapter profile (9) mounted at a profile groove (8). The adapter profile has a form-fit connection with the face plate rail, and a form-fit connection with the face plate rail is secured against detachment at a state inserted into the profile groove of the adapter profile. The adapter profile has an accommodation trough (10) such that the form-fit connection of the face plate rail is arranged in an inner side of the accommodation trough. The adapter profile is made of plastic.