Window Corner Drive Blocking Element Integration

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing corner drives for window and door fittings have complex structures and require numerous components, particularly when multiple latching hooks are involved, leading to intricate assembly processes.

Innovation Solution

Designing at least one drive rod section as a blocking element that can be integrated into the guide and shifted to block or release the latching hooks, reducing the number of components and simplifying assembly by using insertion bevels and clamping means to secure the blocking element in place.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate blocking elements (pins or screws) are used for each latching hook, then the latching hooks can be effectively blocked, but the structural complexity and assembly complexity increase significantly

Engineering Contradiction:

Improveblocking functionVSAvoidstructural complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The blocking element is integrated directly into the connecting rod section, merging two previously separate components (blocking element and connecting rod section) into one unified structure. This eliminates the need for separate pins or screws for each latching hook, thereby reducing structural complexity while maintaining the blocking function.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The connecting rod section is designed to serve multiple functions: it transmits motion and simultaneously acts as a blocking element for the latching hooks. This multi-functionality reduces the total number of components needed in the system.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If separate blocking elements (pins or screws) are used for each latching hook, then the latching hooks can be effectively blocked, but the assembly process becomes more complex and time-consuming

Engineering Contradiction:

Improveblocking functionVSAvoidassembly complexity

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

By integrating the blocking element into the connecting rod section, the assembly process is simplified from installing multiple separate components to installing a single integrated unit. The blocking element is automatically positioned when the connecting rod section is assembled, eliminating the need for separate assembly steps for each latching hook.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If multiple separate blocking elements are used, then each latching hook can be blocked, but the number of components increases

Engineering Contradiction:

Improveblocking functionVSAvoidnumber of components

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The integration of the blocking element into the connecting rod section reduces the total component count by eliminating redundant parts. Instead of having separate blocking elements for each latching hook, a single integrated structure performs the blocking function for all hooks.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP2581532B1Corner guide for a connecting rod fitting of a window

Publication Date: 2020.08.12 WINKHAUS

Figure 1~2
Figure 3
Figure 4

AI summary

A corner drive (6) for a window espagnolette (3) has locking hooks (16, 17) arranged on spring-loaded locking tongues (14, 15) for engaging behind the shoulders of a espagnolette groove (8). A locking element (21, 22) is slidably guided in a housing (13) of the corner drive (6) between a locking position and a release position. In the locking position, the locking element (21, 22) blocks the movement of the locking tongues (14, 15). In a release position, the movement of the locking tongues (14, 15) is free.