Window shade
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Solution Overview
Problem
Conventional window shades face issues with uneven folding, leading to difficulties in installation and operation, as well as increased costs due to thicker locating portions, and a higher risk of detachment from the sliding unit or weight block, resulting in reduced smoothness and wind resistance.
Innovation Solution
The window shade features U-shaped mount bars with connecting grooves and a U-shaped weight track with abutting portions and locating boards, allowing for even weight distribution and secure attachment, enabling easy installation and replacement with customizable iron weight tracks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the folded portion of the window shade is made longer to form a thicker locating portion, then the locating portion becomes thicker and more secure, but the cost increases
Solution Approach 1:
The locating portion is segmented into multiple thin folded layers instead of requiring a single thick folded portion. The mount bar is divided into multiple mounting portions that can be separately stitched to the shade, distributing the securing function across multiple points rather than relying on thickness alone.
Solution Approach 2:
The mount bar is inserted into the locating portion formed by folded layers of the shade, creating a nested structure where the mounting portions are embedded within the folded layers. This nesting provides secure attachment without requiring excessive thickness or length of the folded portion.
2Quantity of substance
If the folded portion of the window shade is made shorter to reduce cost, then the cost decreases, but the locating portion becomes too thin and the window shade may easily detach
Solution Approach 1:
The securing function is segmented into multiple mounting portions on the mount bar, each stitched to the shade at different locations. This segmentation allows the use of shorter folded portions while maintaining overall securing reliability through distributed attachment points.
Solution Approach 2:
Different portions of the mount bar have different local qualities - some mounting portions are stitched while others are inserted into folded layers. This variation in local attachment methods optimizes the balance between folded portion length and securing reliability.
3Area of stationary object
If the window shade is made larger, then the coverage area increases, but the folding way to form the locating portion becomes uneven, causing installation difficulties
Solution Approach 1:
The mount bar is divided into multiple mounting portions that can be independently positioned and attached to different areas of the shade. This segmentation allows each portion to be optimally positioned regardless of the overall size of the shade, maintaining folding uniformity across large areas.
Solution Approach 2:
The mount bar design with multiple mounting portions provides a universal solution that works for shades of various sizes. The same mounting mechanism can be applied to small or large shades without requiring different folding techniques, ensuring consistent installation quality across different coverage areas.
4Device complexity
If the conventional stitching way is used to form the locating portion, then the structure is simple, but the window shade may easily detach from the sliding unit or weight block
Solution Approach 1:
The mount bar combines multiple attachment methods - stitching and insertion into folded layers - into a single integrated component. This merging of attachment strategies within one element provides enhanced reliability without significantly increasing overall structural complexity.
Solution Approach 2:
The mount bar design allows for dynamic adjustment during installation - the mounting portions can be stitched or inserted depending on the specific application requirements. This flexibility enables optimization of attachment reliability for different installation scenarios while maintaining relatively simple structure.
Data Source
AI summary
A window shade may include a shade, and each of a top portion and a bottom portion thereof has a mount bar. The shade is installed into a sliding unit through the mount bar on the top portion of the shade, and the mount bar on the bottom portion of the shade is coupled with a weight track. The mount bars on the top portion and the bottom portion of the shade are adapted to enable the shade to horizontally install on a top track of a window curtain and also to enable the weight of the weight track to be evenly distributed on the bottom portion of the shade, thereby smoothing the operation of the shade.