Casement Frame Corner Piece Drainage and Ventilation
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Solution Overview
Problem
Existing sash frames face challenges with water accumulation and ventilation issues due to insufficient drainage and complex manufacturing processes, particularly with the need for precise 45° miter cuts and individual cutting of glazing beads.
Innovation Solution
A sash frame design incorporating corner pieces with integrated openings on the outer edge, allowing continuous fluid communication from the inside to the outside, which facilitates improved water drainage and ventilation, eliminating the need for precise cutting and additional drainage holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If 45° miter cuts are performed on glazing beads to form corners, then the corners can be assembled to form the frame outline, but the cutting precision requirement increases and individual cutting of each glazing bead is required, increasing manufacturing complexity and time
Solution Approach 1:
The invention introduces a corner piece as a separate component that segments the corner joint from the glazing beads. The corner piece has two branches that receive the ends of glazing beads at right angles, eliminating the need for 45° miter cuts on the beads themselves. This segmentation allows glazing beads to be cut at simpler angles while the corner piece provides the precise angular geometry.
Solution Approach 2:
The corner piece acts as an intermediary component between the glazing beads and the frame structure. Instead of requiring precise angled cuts on the glazing beads to form corners, the corner piece mediates the connection by providing receiving portions that accept the bead ends and form the required angular geometry, thereby simplifying the cutting requirements.
2Ease of manufacture
If 45° miter cuts are performed on each glazing bead individually, then corner assembly is possible, but the preparation time increases due to inability to perform grouped cutting
Solution Approach 1:
By introducing the corner piece as a separate component, the invention enables glazing beads to be cut at uniform right angles rather than individual 45° angles. This allows multiple glazing beads to be cut together in groups using standard cutting equipment, significantly reducing preparation time while still achieving precise corner assembly through the corner piece geometry.
3Object-affected harmful factors
If drainage holes are machined in the glazing bead profile, then water drainage is provided, but the manufacturing complexity increases and drainage effectiveness is insufficient
Solution Approach 1:
The invention extracts the drainage function from the glazing bead profile itself and relocates it to the corner piece. The corner piece includes dedicated drainage openings that provide effective water drainage from the frame interior, eliminating the need to machine drainage holes in the glazing bead profile and thereby reducing manufacturing complexity while improving drainage effectiveness.
Solution Approach 2:
The corner piece serves as an intermediary structure that handles the drainage function separately from the glazing bead assembly. By providing drainage openings in the corner piece rather than in the glazing bead profile, the system achieves effective water removal while simplifying the manufacturing of both the beads and the corner components.
4Object-affected harmful factors
If traditional corner pieces with internal orifices are used, then drainage and ventilation are provided, but the manufacturing complexity increases and aesthetic appearance is compromised
Solution Approach 1:
The invention extracts the drainage and ventilation openings from the interior of the corner piece and relocates them to the exterior surface. This external positioning of openings simplifies the internal structure of the corner piece, reduces manufacturing complexity, and allows the openings to be aesthetically integrated into the external design while maintaining effective drainage and ventilation functions.
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
Enhances water drainage and internal ventilation, simplifies the manufacturing process by allowing grouped cutting of glazing beads and reducing the complexity of assembly, while maintaining a uniform aesthetic appearance.
Implementation Method 1
said at least one corner piece having an opening for fluid communication from the inside of said at least one corner piece to the outside
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The present invention relates to a casement frame formed of a plurality of casement section pieces (2) placed end to end and having within it a housing space (3) to house a casement seal formed by glazing beads (4) associated with each of the casement section pieces (2) and being parallel therewith, the glazing beads (4) and the casement section pieces (2) wedging the seal between them, at least one corner piece (5) being positioned between two adjacent glazing beads (4) and having two legs (5a, 5b) making an angle between them, the free end (8) of each leg being connected to a respective glazing bead (4), the corner piece (5) having an opening (6) for fluidic communication from the inside to the outside positioned on the external edge face of each corner piece (5) and extending continuously along mutually adjacent portions of the two legs (5a, 5b) forming the external corner of the corner piece (5).