Sliding Window Bottom Guide With Concealed Roller Channel

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Solution Overview

Problem

Existing sliding window devices with visible roller-equipped channels detract from the minimalist and frameless appearance, compromising the seamless transition between living space and nature.

Innovation Solution

Incorporating a guide in the bottom profile section with flexible cover strips that conceal the guide channel, using a guide frame with C-shaped cross-section and a T-shaped cover strip to ensure the channel is hidden even when the sliding window element is open.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a guide channel with rollers is provided in the bottom profile section to enable sliding movement, then the sliding window element can be moved smoothly, but the guide channel becomes visible and detracts from the minimalist design

Engineering Contradiction:
Improvesliding movementVSAvoidvisual appearance
Core Design Contradiction:
Ease of operationVSShape

Solution Approach 1:

The guide channel is extracted from the visible exterior space and relocated to the interior of the bottom profile section. By positioning the guide channel inside the profile and covering it with the bottom cover, the mechanical function is preserved while the visual defect is eliminated, resolving the contradiction between operational ease and aesthetic appearance.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The bottom cover acts as an intermediary element that mediates between the functional requirement (visible guide channel for movement) and the aesthetic requirement (hidden guide channel for minimalist design). The cover strips conceal the guide channel while allowing the window element to slide freely, thus resolving the visual contradiction without compromising operational functionality.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Shape

If the guide channel is concealed to maintain a frameless appearance, then the visual appearance is improved, but the guide channel structure becomes more complex

Engineering Contradiction:
Improvevisual appearanceVSAvoidprofile structure
Core Design Contradiction:
ShapeVSDevice complexity

Solution Approach 1:

The guide channel and bottom cover are merged into an integrated assembly where the guide channel is positioned within the bottom profile section and covered by the bottom cover. This merging combines the functional elements (guide channel for movement) and aesthetic elements (cover for concealment) into a unified structure, reducing overall device complexity while achieving both sliding functionality and frameless appearance.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The guide channel is nested within the bottom profile section, and the bottom cover is nested over the guide channel, creating a nested structure. This nesting arrangement allows the guide channel to be concealed within the profile interior, maintaining the frameless aesthetic while preserving the sliding function, thus resolving the contradiction between visual appearance and device complexity.

Inventive Principle:
Principle #7Nested doll (Nesting)

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

The solution provides a discreet and visually seamless sliding window device by fully concealing the guide channel and rollers, maintaining a frameless appearance in all positions.

Implementation Method 1

at least one flexible cover strip (7) guided in the guide (65) for temporarily covering the guide channel (26), wherein the cover strip (7) is connected to the sliding window element (4) at at least one end

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP3859117B1Push window device
Publication Date: 2025.12.03 MICHELS CHRISTIAN
  • EP3859117B1 patent drawingFigure 1a~1b
  • EP3859117B1 patent drawingFigure 2~3
  • EP3859117B1 patent drawingFigure 4~5

AI summary

The invention relates to a sliding window device comprising a rectangular window frame for installation in a window opening, in which a first, fixed window element (3) and a second, movable window element (4) are arranged in the window frame, wherein the window frame is formed from a circumferential profile (1) comprising a bottom profile part (2), a top profile part and two side profile parts, wherein the bottom profile part (2) has a guide channel (26) in which a support roller arrangement is provided on which the second window element (4) is mounted, characterized in that a guide is provided on the two longitudinal side walls of the guide channel (26) in the bottom profile part (2), in which at least one flexible cover strip (7) is guided for the temporary covering of the guide channel (26), which is connected at least at one end to the movable window element (4).