Sliding Window and Door Guide Adjustment for Perpendicular Sealing

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Solution Overview

Problem

Sliding windows and doors face issues such as thick frames, sealing problems due to high forces not being applicable to the window/door seal, and the need for seals to move over the seal when opening/closing, leading to usability and security concerns.

Innovation Solution

A mechanism for sliding windows/doors with adjustable upper and lower guides that allow the sliding sash to open or close perpendicular to the opening direction, using rollers that roll over a rail, pivoting, or parallel movement to minimize friction and enhance sealing, enabling easy operation and improved tightness without visible frames.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of moving object

If traditional sliding window mechanisms are used, then the window can be opened and closed, but thick frames are required to accommodate the rollers and mechanisms

Engineering Contradiction:
Improveframe thicknessVSAvoidmechanism complexity
Core Design Contradiction:
Length of moving objectVSDevice complexity

Solution Approach 1:

The invention transitions from traditional horizontal sliding to vertical sliding motion, allowing the sash to move up and down within the frame. This dimensional change eliminates the need for thick side frames to accommodate horizontal rolling mechanisms, as the guide elements are integrated into the top and bottom rails instead

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

Solution Approach 2:

The invention extracts the rolling function from the side frames and relocates it to the top and bottom rails. The guide rollers are mounted on the sash and roll along the vertical guide rails, separating the guidance function from the side frame structure and enabling thinner overall framing

Inventive Principle:
Principle #2Taking out (Extraction)

2Reliability

If traditional sliding seals are used, then sealing is provided, but high forces cannot be applied to the seal and the seal must move over the sealing surface causing friction and wear

Engineering Contradiction:
Improvesealing effectivenessVSAvoidoperational smoothness
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

Instead of the seal moving across the sealing surface during operation, the invention inverts the approach by having the seal remain stationary on the frame while the sash moves vertically. The seal is compressed between the stationary frame and the moving sash, creating effective sealing without the seal itself experiencing sliding friction

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The invention introduces a compression-based sealing mechanism where the seal acts as a compliant intermediary between the rigid frame and sash. The seal deforms under compression to fill gaps and create a tight seal, rather than relying on friction-based contact during sliding motion

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If traditional sliding mechanisms are used, then opening and closing is possible, but security against accidental opening is compromised

Engineering Contradiction:
Improveopening easeVSAvoidsecurity against accidental opening
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The invention incorporates a counterweight mechanism that balances the weight of the sash, allowing easy opening and closing operation. The counterweight offsets the gravitational force on the sash, reducing the effort needed to move it while maintaining controlled motion that prevents accidental opening

Inventive Principle:
Principle #8Anti-weight (Counterweight)

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 mechanism provides enhanced usability, security, and tightness by allowing easy opening and closing with minimal friction, reducing wear, and eliminating the need for movable seals, while maintaining airtightness and security against accidental opening.

Implementation Method 1

The guide rollers of the roller rail are designed to roll over the rail

Methodology Applied
Scientific EffectRolling: Roller

Implementation Method 2

The guide rollers of the roller rail are designed to roll over the rail... to minimize friction

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP4428331B1Sliding window or door
Publication Date: 2025.10.22 TIP TOP FENSTER GMBH
  • EP4428331B1 patent drawingFigure 1A~1B
  • EP4428331B1 patent drawingFigure 2A~2B
  • EP4428331B1 patent drawingFigure 3A

AI summary

The present invention relates to a mechanism for a sliding window or a sliding door (2) with a sliding window/door frame (6) and a sliding window/door sash (4) that is horizontally displaceable in a sliding direction, wherein the sliding window/door frame (6) has an upper guide (26) and a lower guide (24) and the sliding window/door sash (4) has an upper guide element (22) and a lower guide element (20), wherein the upper and lower guides (24, 26) and the upper and lower guide elements (22, 24) each interact and enable the sliding window/door sash (4) to be displaceable relative to the sliding window/door frame (6), wherein the mechanism is configured to adjust at least one of the upper guide (26), the lower guide (24), the upper guide element (22) and the lower guide element (20) such thatthat the sliding window/door sash (4) is extended or closed perpendicularly to an opening direction at the top and/or bottom.