Inverted Window Handle Assembly for Torque and Aesthetics
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Solution Overview
Problem
Existing ventilation and operating assemblies for windows face challenges during manufacture, transportation, and use due to design limitations, particularly with the handle protruding into the room, affecting aesthetics and requiring precautions, and compromising operational comfort and ease of use.
Innovation Solution
The ventilation and operating assembly features a connection portion attached near the second end edge of the closure portion, allowing the handle to extend downwards, increasing the lever arm length and reducing the force required for operation, while maintaining compact dimensions and operational comfort by adjusting the width and height of the assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the handle portion protrudes into the room from the frame plane, then the operational comfort is improved, but the aesthetic appearance deteriorates and transportation precautions are required
Solution Approach 1:
The handle portion is inverted to extend downwards from the connection portion rather than protruding outwards from the frame plane. This reversal of the traditional handle orientation allows the handle to extend into the window assembly rather than into the room, thereby maintaining aesthetic appearance while preserving operational comfort through extended lever arm length
2Ease of manufacture
If the dimensions of the ventilation flap and handle are minimized for manufacturing and transportation, then manufacturing and transportation efficiency are improved, but operational comfort deteriorates
Solution Approach 1:
The handle portion extends in the width direction from the connection portion rather than extending in the height direction or protruding from the frame plane. This dimensional reorientation allows the handle to achieve sufficient length for comfortable operation while maintaining compact overall dimensions that facilitate manufacturing and transportation
3Stability of the object's composition
If the connection portion is positioned at the center of the closure portion, then structural symmetry is improved, but the lever arm length and torque are reduced
Solution Approach 1:
The connection portion is asymmetrically positioned at or near the second end edge of the closure portion rather than at the center. This asymmetric positioning maximizes the lever arm length between the hinge part and the connection portion, thereby increasing the torque and mechanical advantage for operating the ventilation assembly
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 configuration enhances the torque and moment applied during operation, reducing the necessary force for ventilation and opening while maintaining aesthetic integration within the window frame, improving manufacturing, transportation, and operational efficiency.
Implementation Method 1
a first end edge including a hinge part for connection to the sash
Implementation Method 2
the handle portion extends downwards in the width direction from the connection portion... increasing the lever arm length and reducing the force required for operation... enhances the torque and moment applied during operation
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The ventilation and operating assembly (10) is operable to ventilate and/or operate a sash (2) relative to a frame (1) of the window. The assembly comprises a closure portion (14, 18) having an inner side and an opposite outer side, a first end edge (19) including a hinge part (19a) for connection to the sash and an opposite second end edge (15), a handle portion (11) having an inner side and an outer side, and a portion (12) connecting the handle portion (11) with the closure portion (14, 18). The assembly defines a width direction from the first end edge (19) to the second end edge (15), and a height direction from the inner side of the closure portion (14, 18) to the outer side of the handle portion (11). The connection portion (12) is connected to the closure portion (14, 18) at or near the second end edge (15) and the handle portion (11) extends downwards in the width direction from the connection portion (12).