Roof Window Lifting Device Angle Adjustment
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Solution Overview
Problem
Existing roof window lifting devices struggle to provide sufficient design flexibility to accommodate different roof inclinations, affecting the ease of operability and force balance.
Innovation Solution
The roof window incorporates an adjustment system that allows the angle between the sledge arm and the lifting arm to change, enabling the lifting device to adapt to various roof inclinations while maintaining the opening angle of the roof window.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-angle lifting device is used, then the structure is simple, but it cannot adapt to different roof inclinations
Solution Approach 1:
The lifting device incorporates an adjustable connection between the lifting arm and sledge arm, allowing the angle between them to be dynamically changed. This enables the device to adapt to different roof inclinations (15-60 degrees) by adjusting the geometric configuration, transforming a static structure into a dynamic one that can accommodate varying operational conditions.
Solution Approach 2:
The invention changes the geometric parameter (angle) between the lifting arm and sledge arm to adapt to different roof inclinations. By adjusting this angle parameter, the lifting device can maintain proper force balance and operational characteristics across a range of roof slopes without requiring complete redesign for each inclination.
2Adaptability or versatility
If the lifting device is designed for a specific roof inclination, then the force balance is optimized, but it cannot operate effectively on roofs with different inclinations
Solution Approach 1:
The adjustable angle mechanism allows the lifting device to maintain optimized force balance across different roof inclinations. By dynamically adjusting the geometric configuration, the device preserves ease of operability whether installed on a 15-degree or 60-degree roof, eliminating the need to compromise on usability for broader adaptability.
3Adaptability or versatility
If the angle between lifting arm and sledge arm is fixed, then the manufacturing is simple, but the design flexibility is limited
Solution Approach 1:
The invention introduces an adjustable connection point or mechanism between the lifting arm and sledge arm, enabling angle variation without requiring multiple complete device variants. This dynamic adjustment capability provides design flexibility while maintaining manufacturing simplicity through a modular, adjustable rather than fully custom, approach.
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
This solution enhances the force balance and operability of the roof window across a range of roof inclinations from 15 to 60 degrees, improving user experience and device stability.
Implementation Method 1
a spring assembly configured to be coupled to a sledge
Implementation Method 2
the first end of the sledge arm is rotatably connected to the lifting arm
Implementation Method 3
the first end of the lifting arm is rotatably connected to the sledge slidably connected to the primary frame in a sledge guide
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A roof window (100), comprising a stationary primary frame (1), a secondary frame (2) such as a sash (2) and/or an intermediate frame, and a lifting device (10) comprising a lifting arm (14), a push arm (40), an adjustment system (50), and a sledge arm (31), the sledge arm (31) and the lifting arm (14) being connected at an angle (α1), wherein the angle (α1) is configured to be changed into a second angle (α2) by adjusting the position of the first end of the sledge arm (31) by means of the adjustment system (30).