Snap-Fit Corner Bracket for Blind Frames With Hidden Gap Locking

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Solution Overview

Problem

Existing window blind frame installations are time-consuming due to the need for individual screw tightening and incur additional costs, while push-fit brackets with rigid locking plates face issues with secure coupling and unsightly gaps.

Innovation Solution

A snap-fit corner bracket with angled connector assemblies, resiliently deformable arms, and skirts to ensure secure coupling and cover gaps, featuring engagement lugs and crushable ribs for enhanced stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a conventional window blind frame is used with separate corner pieces, then the frame structure is simple and easy to manufacture, but the corner areas are difficult to clean and maintain due to trapped dirt and debris

Engineering Contradiction:
Improveframe construction simplicityVSAvoidcorner cleaning accessibility
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The corner bracket merges the corner connection function with a integrated cleaning access feature. The bracket design combines the structural corner piece with a removable cover or access point that allows cleaning tools to reach the corner area, eliminating the need for separate cleaning operations while maintaining structural integrity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The invention introduces a new dimensional aspect to the corner bracket by adding a removable cover or access mechanism that provides a pathway from the exterior to the interior corner area. This dimensional addition allows cleaning tools to access previously unreachable areas without complicating the basic frame structure.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Productivity

If the frame is designed to be easy to assemble, then manufacturing and installation are simplified, but the corner brackets may create trapped spaces that accumulate dirt and are hard to clean

Engineering Contradiction:
Improveassembly speedVSAvoiddirt accumulation in corner areas
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The corner bracket integrates the connection function with a built-in cleaning access feature, combining structural support with maintenance accessibility in a single component that does not slow down the assembly process.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The removable cover or access mechanism acts as an intermediary element that allows cleaning tools to reach the corner area without requiring disassembly of the frame structure, thus preventing dirt accumulation while maintaining quick assembly capabilities.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Stability of the object's composition

If standard corner brackets are used, then the frame structure is stable, but the corners are hard to reach for cleaning and maintenance

Engineering Contradiction:
Improveframe structural stabilityVSAvoidcorner accessibility for cleaning
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The corner bracket merges structural stability with cleaning accessibility by integrating a removable cover or access point directly into the corner connection piece, allowing maintenance without compromising structural integrity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The corner bracket is segmented into a fixed structural portion and a removable access portion, allowing the stable connection to remain in place while the access portion can be removed for cleaning purposes.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4499969B1Snap-fit corner bracket for a window blind frame
Publication Date: 2026.04.29 LOUVER LITE LTD
  • EP4499969B1 patent drawingFigure 1a
  • EP4499969B1 patent drawingFigure 1b~2
  • EP4499969B1 patent drawingFigure 3

AI summary

A snap-fit corner bracket for a window blind frame, the corner bracket including a central body element and extending from the central body element a first connector assembly and a second connector assembly, wherein the second connector assembly is angled relative to the first connector assembly; wherein each connector assembly includes a locating member; an engagement lug carried at the distal end of a resiliently deformable arm; a stop surface; and a skirt, wherein the resiliently deformable arm is spaced from the locating member and curves relative thereto; and wherein the skirt is spaced from the resiliently deformable arm and covers the stop surface.