Door Sealing Member With Spring Height Adjustment
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Solution Overview
Problem
Existing swinging doors and windows have poor sealing performance due to gaps between the door/window leaf and the floor/windowsill, allowing outdoor materials to enter, and existing solutions fail to adjust heights separately for left and right sides, leading to incomplete sealing.
Innovation Solution
A door or window with a sealing structure comprising fixing pieces, flexible members, and a sealing member, where the fixing pieces have inclined surfaces and through-holes for adjustable mounting, and the sealing member includes a spring-connected sealing frame with plastic strips for independent height adjustment, ensuring tight sealing and smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a gap is maintained between the door leaf and floor to ensure smooth opening and closing, then the door can operate without blocking, but sealing performance deteriorates and outdoor materials can enter
Solution Approach 1:
The sealing member is designed to dynamically adjust its position between raised (during opening/closing) and lowered (during sealed closed position) states. The flexible member enables this dynamic movement, allowing the sealing member to automatically lower when the door is fully closed to seal the gap, and raise when the door moves to prevent blocking
Solution Approach 2:
The sealing member is preliminarily positioned in a raised state before the door closes, preparing it to seal the gap. When the door approaches the closed position, the flexible member automatically lowers the sealing member to seal the gap between the door leaf and floor, preventing outdoor materials from entering
2Object-affected harmful factors
If U-shaped adjusting strips and adjusting hooks are used to adjust door height, then sealing performance improves, but the structure becomes complex and service life decreases
Solution Approach 1:
The invention extracts and eliminates the complex adjusting hooks and U-shaped adjusting strips from the door bottom structure. Instead, it uses a simplified flexible member (spring) that provides the same height adjustment function through elastic deformation, significantly reducing structural complexity while maintaining sealing performance
Solution Approach 2:
The flexible member changes its elastic parameter (compression/extension) to adjust the height of the sealing member. By varying the compression amount of the spring, the sealing member's position is adjusted to match different floor heights, achieving sealing without complex mechanical adjustment mechanisms
3Object-affected harmful factors
If the door leaf is automatically adjusted up and down during opening and closing, then sealing performance improves, but the adjusting hook hinders smooth operation
Solution Approach 1:
The invention replaces the durable but obstructive adjusting hook with a simple spring mechanism that has no moving parts protruding from the door. The spring is contained within the door structure, eliminating any potential obstruction to smooth door operation while still providing automatic height adjustment for sealing
4Object-affected harmful factors
If sealing is designed for the highest point of the floor, then some sealing is achieved, but complete sealing cannot be achieved on uneven floors
Solution Approach 1:
The sealing member is segmented into left and right sides that can be independently adjusted. Each side has its own flexible member that can be compressed to different extents, allowing the left and right sealing positions to be independently adapted to different floor heights, achieving complete sealing on uneven floors
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
The solution provides a longer service life and complete sealing, ensuring the door/window is water-proof, moisture-proof, dust-proof, insect-proof, and noise-proof by allowing independent height adjustment of the sealing member to accommodate uneven floors/windowsills, while maintaining smooth opening and closing.
Implementation Method 1
each flexible member comprises a housing and a spring within the housing
Implementation Method 2
the sealing member comprises a sealing frame, plastic strips installed at the bottom portion of the sealing frame, the door leaf or the window leaf is provided with at least two said flexible members
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A swinging door or window, comprising a door or window sash (1), a door or window leaf (2) and sealing structures (3); the sealing structures (3) comprise fixing pieces (31), flexible members (32) and sealing members (33); the door or window sash (1) has the fixing pieces (31) installed thereon; the door or window leaf (2) has the flexible members (32) installed thereon; the sealing members (33) are connected below the flexible members (32), and are installed at the bottom portion of the door or window leaf (2). In addition, the fixing pieces (31) are further provided with inclined surfaces (311); the flexible members (32) comprise housings (321) and springs (322); the sealing members (33) comprise sealing frames (331), plastic strips (332) and convex portions (333) ; the convex portions (333) are provided with at least one inclined surface (334) matching the fixing pieces (31), and guide rails (335) for positioning the door or window leaf (2); when the convex portions (333) are connected to the springs (322) to move relative to the fixing pieces (31), the sealing frames (331) can move up and down. The door or window has good sealing performance, ensures smooth opening of the door or window, and achieves separate left and right height adjustment.