Louvre Window Pinion Adjustment Mechanism
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Solution Overview
Problem
Louvre windows have complex and time-consuming assembly processes due to their mount mechanisms, which include bearing bushes, pistons, and springs, and their adjustment mechanisms take up significant space and are prone to slat overturning during pivoting.
Innovation Solution
The louvre window design features pinions with axle journals on both sides, which fit into bores and openings between inner and outer elements, using clip-in connecting strips with bearing rings and sealing inserts, and a toothed rack within a hollow profile, allowing for secure and space-efficient adjustment of slats.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex mount mechanism with bearing bushes, pistons, and springs is used, then the louvre window achieves reliable slat adjustment, but the assembly process becomes time-consuming and complex
Solution Approach 1:
The pinion is divided into two separate parts: an outer pinion portion that engages with the rack and an inner pinion portion that rotates with the slat. These portions are connected via a common axis, allowing independent functions. This segmentation simplifies the overall mechanism by eliminating the need for complex bearing bushes, pistons, and springs while maintaining reliable adjustment.
Solution Approach 2:
The inner pinion portion is nested within the outer pinion portion, sharing a common rotation axis. The inner portion is inserted through the slat's rotation axis and secured with a retaining ring, creating a compact nested structure that reduces assembly complexity while ensuring reliable slat adjustment through the gear engagement.
2Ease of operation
If traditional adjustment mechanisms are used, then slat positioning is achieved, but the mechanisms take up significant space both in height and window depth
Solution Approach 1:
The adjustment mechanism is merged with the window frame structure itself. The rack is integrated into the frame, and the pinion assembly combines the adjustment function with the slat mounting function. This merging eliminates the need for separate adjustment mechanisms, significantly reducing the space required while maintaining full slat positioning capability.
Solution Approach 2:
The pinion assembly utilizes the depth dimension of the window frame efficiently by positioning the gear engagement in the depth direction rather than requiring additional height or width. The rack extends along the vertical direction while the pinion engages it in the depth direction, optimizing space utilization.
3Ease of operation
If conventional mounting methods are used, then slats can be adjusted, but they are prone to overturning during pivoting
Solution Approach 1:
The inner pinion portion is pre-positioned through the slat's rotation axis before final assembly. The retaining ring is installed to secure the inner pinion portion in place before the slat begins pivoting. This preliminary positioning and securing prevents any potential overturning during the pivoting operation by ensuring the pinion remains properly aligned with the rack throughout the motion.
Data Source
Figure 1~4
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Figure 8
AI summary
The window has a thermal isolating connection laths connected in a rectangular-shaped window frame. Slats (2, 3) are pivotably inserted into the window frame. Pinions are rotatably supported on both sides of plate-shaped axle journals that are placed in the window frame by using an axial outer pin outwardly directed in holes. The holes are placed between an inner element and an outer element (6) placed on the connecting laths. An internal pin in openings between the inner and outer elements is inserted into a clipped connection bar, where the inner and outer elements are made from metal.