Sheer Vertical Blind Clamping Structure to Minimize Light Leakage

Solution Overview

Problem

Conventional hanging structures for curtain/blind fabrics result in significant gaps between the clamping plates and the headrail, leading to light leakage.

Innovation Solution

A sheer vertical blind structure with sliding carriers featuring clamping bases and clamping plates that allow for direct upward insertion and engagement, eliminating the need for a downward extension and reducing the gap between the clamping plates and the headrail.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional hanging structure with downward extension is used, then the hanging operation can be completed, but a large gap is formed between the clamping plates and the headrail causing light leakage

Engineering Contradiction:

Improvehanging operationVSAvoidlight leakage

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent inverts the conventional hanging sequence by eliminating the downward extension requirement. Instead of extending downward then hanging, the clamping plates are directly inserted upward into the headrail, reversing the motion direction and eliminating the gap-forming downward extension space.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent extracts and removes the downward extension portion from the hanging structure. By eliminating this unnecessary extension, the design achieves direct engagement between the clamping plates and the headrail, preventing light leakage while maintaining hanging functionality.

Inventive Principle:

Principle #2Taking out (Extraction)

2Ease of operation

If a downward extension is provided for hanging operation, then the hanging hooks can be engaged, but the gap between clamping plates and headrail increases

Engineering Contradiction:

Improvehanging engagementVSAvoidgap distance

Core Design Contradiction:

Ease of operationVSLength of stationary object

Solution Approach 1:

The patent inverts the conventional hanging sequence by eliminating the downward extension requirement. Instead of extending downward then hanging, the clamping plates are directly inserted upward into the headrail, reversing the motion direction and eliminating the gap-forming downward extension space.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent changes the engagement approach from a vertical downward extension dimension to a direct horizontal insertion dimension. The clamping plates are inserted directly into the headrail without requiring vertical space, effectively utilizing a different spatial dimension for the hanging operation.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Ease of operation

If the hanging portion extends downward sufficiently, then the clamping plates can be moved and hung, but light leakage along the top edge occurs

Engineering Contradiction:

Improveclamping plate movementVSAvoidlight leakage

Core Design Contradiction:

Ease of operationVSIllumination intensity

Solution Approach 1:

The patent extracts and removes the downward extension portion from the hanging structure. By eliminating this unnecessary extension, the design achieves direct engagement between the clamping plates and the headrail, preventing light leakage while maintaining hanging functionality.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent inverts the conventional hanging sequence by eliminating the downward extension requirement. Instead of extending downward then hanging, the clamping plates are directly inserted upward into the headrail, reversing the motion direction and eliminating the gap-forming downward extension space.

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS20260062993A1Sheer vertical blind structure

Publication Date: 2026.03.05 CHING FENG HOME FASHIONS CO LTD

AI summary

A sheer vertical blind structure includes a plurality of sliding carriers provided in an elongated headrail. Each sliding carrier is protrudingly provided thereunder with a clamping base. Each clamping base includes a central plate portion and two clamping and fastening portions. Each clamping and fastening portion has one end extending away from the headrail such that a clamping groove with a downward-facing opening is formed between each clamping and fastening portion and the corresponding central plate portion. Each clamping and fastening portion is provided with an engaging hook protruding toward the corresponding central plate portion. Each sliding carrier is configured to work with two clamping plates. Each clamping plate has an inner side and an outer side, wherein the outer side is provided with an engaging groove.