Sliding Window Automatic Actuation With Concealed Handle

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Solution Overview

Problem

Existing sliding window devices with visible handle elements detract from the minimalist, frameless visual appearance, impacting the overall aesthetic appeal.

Innovation Solution

A sliding window device with an automatic mechanism that extends and retracts the sliding window element using a motor-driven carriage and trigger, eliminating the need for a visible handle by concealing it within the profile parts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a handle element is provided on the sliding window element for manual operation, then the ease of operation is improved, but the visual appearance is worsened due to visible handle element impacting the frameless aesthetic

Engineering Contradiction:
Improveease of operationVSAvoidvisual appearance
Core Design Contradiction:
Ease of operationVSShape

Solution Approach 1:

The handle element is extracted from the sliding window element and integrated into the lateral profile part of the window frame. The handle is no longer attached to the movable window element but is instead formed as part of the stationary frame structure, allowing it to be hidden when the window is closed while remaining functional when needed.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The handle element is nested within the lateral profile part of the window frame. When the sliding window element is in the closed position, the handle is concealed within the frame structure. When the window needs to be opened, the handle becomes accessible through the interaction with the movable window element, effectively hiding it when not in use.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Ease of operation

If the handle element is integrated into the sliding window element, then the ease of operation is improved, but the device complexity increases due to additional integration requirements

Engineering Contradiction:
Improveease of operationVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The handle element is merged with the lateral profile part of the window frame, combining two separate components into a single integrated structure. This merging simplifies the overall device by reducing the number of separate parts and assembly steps, while maintaining the functionality of the handle for operating the sliding window element.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4624718A1Sliding window device
Publication Date: 2025.10.01 MICHELS CHRISTIAN
  • EP4624718A1 patent drawingFigure 1a~1c
  • EP4624718A1 patent drawingFigure 2a~2c
  • EP4624718A1 patent drawingFigure 2d~3a

AI summary

The invention relates to a sliding window device, comprising a rectangular window frame (1) for installation in a window cutout, which is formed from a circumferential profile which is formed by a floor-side, a ceiling-side and two lateral U-shaped or double-U-shaped profile parts and in which a first, fixed window element (2) and a second, movable window element (3) are arranged, wherein the movable window element (3) comprises a glass pane (31) which is framed by a vertical stop window profile (32), which is arranged on the side facing away from the fixed window element (3), a second vertical as well as an upper (33) and a lower horizontal window profile, wherein the movable window element (3) can be retracted with its stop window profile (32) into the lateral profile part (13) arranged opposite the fixed window element (2).Means for automatically extending and retracting the sliding window element (3) with its stop window profile (32) into and out of the lateral profile part (13) are provided, which can be activated via a trigger. The invention further relates to a device for automatically extending and retracting the sliding window element of such a sliding window arrangement.