Sliding Window Fitting With Shift Mechanism For Sealing
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Solution Overview
Problem
Existing window designs that improve water tightness, heat insulating properties, and sound insulating properties by obliquely sliding the sash or using complex oblique guide mechanisms often require high operating forces and can cause issues with smooth sliding and durability.
Innovation Solution
A window design featuring a guide member on the sash that slides along guide surfaces on the frame, with a shift mechanism to adjust the guide member's position, allowing for improved sealing without increasing the operating force and preventing the sash from coming off the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sash is made to obliquely slide immediately before closing to press the rail and stile members on tight materials, then water tightness, heat insulating properties, and sound insulating properties are improved, but the operating force during this operation increases and the sash and tight materials slidingly contact each other causing durability issues
Solution Approach 1:
The invention divides the sealing function from the sliding function by introducing a separate pressing mechanism. The sash slides horizontally along the frame while a pressing member, actuated by an operating member, independently presses the sash against the tight materials. This segmentation allows sealing without requiring oblique sliding during operation.
Solution Approach 2:
The invention introduces a pressing member as an intermediary component between the sash and the tight materials. This pressing member transfers the pressing force from the operating member to the sash, enabling the sash to be pressed against the tight materials without the sash itself undergoing oblique sliding motion.
2Reliability
If an oblique guide mechanism is provided between the sash roller part and lower frame part to press the lower frame part on tight materials, then sealing properties are improved, but the structure becomes very complex and a large operating force is required
Solution Approach 1:
The invention extracts the pressing function from the guide mechanism. Instead of using an oblique guide mechanism that combines guiding and pressing functions, the invention uses a simple horizontal guide mechanism for movement and adds a separate pressing member with an operating member for the sealing function. This extraction simplifies the overall structure while maintaining sealing effectiveness.
Solution Approach 2:
The invention inverts the conventional approach by not using the guide mechanism to achieve pressing. Instead, the guide mechanism solely provides horizontal guidance, and the pressing is achieved through a separate operating member that acts perpendicular to the sliding direction. This inversion separates the functions and reduces structural complexity.
3Reliability
If the lower frame part is moved in a direction orthogonal to the rail to press on tight materials, then sealing is improved, but a large reaction force is applied along the axle of the sash roller part causing rattling and poor smooth sliding
Solution Approach 1:
The invention applies pressing force locally at the interface between the sash and tight materials through the pressing member, rather than moving the entire lower frame part orthogonally. This localized pressing achieves sealing without generating large reaction forces on the sash roller part axle, eliminating rattling and maintaining smooth sliding.
Data Source
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AI summary
A fitting is provided with a movable sash 30 that is slidable along the longitudinal direction of a movable top rail 32 in a state in which a guide member 60 provided on a thickness direction surface of the movable top rail 32 abuts on top guide surfaces 121 provided on a top frame member 11. The fitting includes a top slide member 40A that slides along the longitudinal direction of the movable top rail 32 when an operating handle 50 is operated. The guide member 60 is supported so as to be movable along the thickness direction relative to the movable top rail 32. Between the movable top rail 32 and the guide member 60, a shift mechanism (40A, 43, and 63) is interposed that moves the guide member 60 along the thickness direction relative to the movable top rail 32 according to the slide of the top slide member 40A.