Screen Channel Insert Structure for Variable-Thickness Screens

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Solution Overview

Problem

Existing fenestration units face challenges in efficiently attaching panels such as screens to frames, particularly when screens of varying thicknesses are involved, necessitating the use of different frame structures for each thickness.

Innovation Solution

A panel channel insert, such as a screen channel insert, with a frame attachment portion and a channel portion, allows for securing panels of different thicknesses using a spline, where the channel portion can accommodate splines of varying sizes, and the frame attachment portion can snap or slide onto the frame's spline channel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If different frame structures are used for screens of different thicknesses, then each screen thickness can be properly accommodated, but the device complexity and manufacturing cost increase due to needing multiple frame types

Engineering Contradiction:

Improveaccommodation of different screen thicknessesVSAvoidnumber of frame types

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The frame is divided into two functional segments: an outer frame structure and an inner channel insert. The channel insert is a separate component that fits within the frame's spline channel, allowing the frame structure itself to remain unchanged while the insert adapts to different screen thicknesses. This segmentation enables versatility without increasing overall frame complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The channel insert acts as an intermediary component between the fixed frame structure and the variable screen thickness. Instead of modifying the frame itself, the insert mediates the interface, providing the necessary adaptation for different screen thicknesses while the frame remains a single standardized design.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If multiple frame types are produced for different screen thicknesses, then proper fit is achieved, but manufacturing efficiency decreases and production time increases

Engineering Contradiction:

Improvescreen thickness accommodationVSAvoidmanufacturing efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

By segmenting the adaptation function into a separate channel insert component, the main frame can be mass-produced as a single standardized type. The channel inserts can then be produced in varying sizes to match different screen thicknesses, allowing the majority of production (the frame) to be highly efficient while still accommodating variety.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The standardized frame design achieves multi-functionality by being compatible with multiple channel insert sizes. A single frame type can serve multiple screen thickness applications when paired with the appropriate channel insert, eliminating the need to produce multiple frame variants and thereby improving manufacturing efficiency.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Device complexity

If the spline channel size is fixed in the frame, then the frame structure is simple, but it cannot accommodate screens of varying thicknesses

Engineering Contradiction:

Improveframe structure simplicityVSAvoidscreen thickness flexibility

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The spline channel functionality is segmented from the frame structure and placed into a separate channel insert component. This allows the frame to maintain its simple, fixed spline channel design while the channel insert provides the variable sizing capability needed for different screen thicknesses.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The channel insert serves as an intermediary that introduces variability into the otherwise fixed frame structure. It mediates between the simple, standardized frame design and the need for accommodation of different screen thicknesses, allowing the frame itself to remain simple while achieving versatility through the insert.

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables the use of a single frame to accommodate screens of different thicknesses, enhancing manufacturing efficiency and flexibility by allowing the same spline to be used across varying screen thicknesses, thus reducing the need for multiple frame types.

Implementation Method 1

The first wall section and the arm may be resiliently moveable with respect to one another

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS12584351B2Screen channel inserts for fenestration units

Publication Date: 2026.03.24 PELLA CORP

AI summary

A screen channel insert for use in connection with a fenestration unit frame including a spline channel. The screen channel insert includes a frame attachment portion for attaching the screen channel insert to the spline channel of the fenestration unit frame, and a channel portion defining an insert spline channel. The insert spline channel is configured to receive a spline to secure a screen to the screen channel insert. The insert spline channel can have different sizes than the spline channel of the frame, enabling the frame to be used with screens having different thicknesses.