Window Drive Spring Bolt Mechanism for Tight Space Installation
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Solution Overview
Problem
Existing window sash drives are complex to install, especially when the window is positioned close to a lintel or ceiling, and require space for twisting, which prevents secure attachment to the wall.
Innovation Solution
A drive unit with a spring bolt mechanism that allows easy attachment to the window frame or sash, featuring a bracket system with recesses for bolts or sleeves, enabling the drive unit to be inserted and pivoted between holder legs, reducing installation complexity and bending loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drive unit is attached using a conventional twisting mechanism, then the drive unit can be secured to the wall bracket, but the housing requires additional space for twisting that prevents it from resting against and being supported by the wall
Solution Approach 1:
The twisting action is extracted from the housing and transferred to the bolt itself. The bolt is designed with a head that can be twisted independently of the housing, allowing the housing to remain compact and rest against the wall bracket for support while the bolt provides the securing function through rotation.
Solution Approach 2:
The bolt acts as an intermediary between the housing and the wall bracket. Instead of the housing itself twisting to secure, the bolt serves as the mediating element that transfers the twisting motion and secures the housing to the bracket, allowing the housing to maintain its compact form.
2Reliability
If the drive unit is installed together with brackets in conventional manner, then the connection is secure, but the installation process becomes complex and difficult especially when the window is in unfavorable positions
Solution Approach 1:
The mounting bracket and the drive unit housing are merged into a single integrated component. The holder is formed as one piece with the housing, eliminating the need for separate bracket installation steps and reducing installation complexity while maintaining secure connection through the integrated design.
Solution Approach 2:
The integrated holder serves multiple functions: it provides structural support, enables mounting to the wall bracket, and allows for the spring bolt attachment mechanism. This multi-functional design simplifies the overall installation process by combining what were previously separate components into one universal mounting solution.
3Force
If the drive unit is made pivotable to reduce bending loads, then the bending load on the drive means is reduced, but the drive unit requires additional attachment mechanisms to enable pivoting
Solution Approach 1:
The drive unit is designed with pivotable attachment points that allow dynamic adjustment of the connection angle. The spring bolt mechanism enables the drive unit to pivot and automatically track along the bracket, adapting to the forces generated during sash operation and reducing bending loads on the drive means.
Solution Approach 2:
The spring bolt mechanism provides automatic tracking functionality. As forces occur during sash operation, the spring bolt allows the drive unit to automatically adjust its position and track along the bracket, reducing bending loads without requiring complex external adjustment mechanisms.
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
Facilitates easy and secure assembly of the drive unit, reducing installation challenges and bending loads on the drive mechanism, especially in tight spaces, while allowing for automatic tracking of forces during sash operation.
Implementation Method 1
A spring acts on the spring bolt, which pushes the spring bolt back out of the drive unit and can move it into the recess in the holder
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The drive device (1) has a drive unit (5) for moving a wing (2) opposite to a fixed blind frame (3) by a drive element (6). The driving unit is fixed to a holder (8) on the wing or the fixed blind frame. An end cap of the drive unit is provided with a retainer in which a spring bolt acted upon by a spring is arranged. The spring bolt is displaced against the spring in the end cap into the retainer. An independent claim is included for a method for assembling drive device.