Pivot Door Drop-Down Seal with Adjustable Wheel Trigger
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Solution Overview
Problem
Existing door seal devices for pivot doors require a large amount of space and are difficult to adapt to narrow door gaps, often necessitating specially shaped run-up ramps and being inflexible to local conditions.
Innovation Solution
A seal device with a drop-down seal and a triggering module featuring a pivot arm and a wheel, which can be easily adjusted to fit various door gap sizes and types, including pivot doors, by altering the position of the wheel and the length of the pivot arm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional triggering mechanism with a rod or bolt is used for pivot doors, then the seal device can actuate the lowering mechanism, but the triggering bolt experiences considerable wear on the triggering bolt and door frame
Solution Approach 1:
The patent introduces a wheel as an intermediary element between the door frame and the actuating part. The wheel rotates against the door frame during door closure, converting direct linear contact into rotational motion. This intermediary mechanism significantly reduces abrasive wear on both the door frame and the triggering components, as the wheel can be easily replaced when worn.
2Ease of operation
If specially shaped run-up ramps are designed for pivot doors, then the closing behavior can be improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent divides the triggering function into separate modular components: a simple pivot arm, a wheel, and an actuating part. This segmentation allows each component to be optimized independently and facilitates easy adjustment of the wheel position and pivot arm length to suit different door gap dimensions, reducing overall device complexity while maintaining proper closing behavior.
Solution Approach 2:
The patent employs a dynamic triggering mechanism where the wheel can be positioned at different locations on the pivot arm, and the pivot arm length can be adjusted. This dynamic configurability allows the same basic structure to adapt to various door gap sizes and types, eliminating the need for specially shaped run-up ramps for each application.
3Ease of manufacture
If a fixed triggering mechanism is used, then the structure is simple, but it cannot be adapted to different door gap dimensions and local conditions
Solution Approach 1:
The patent creates a dynamically adjustable triggering mechanism where the wheel position on the pivot arm and the pivot arm length itself can be modified. This allows the same manufactured components to be adapted to different door gap dimensions and local installation conditions, combining manufacturing simplicity with field adaptability.
Solution Approach 2:
The patent designs a universal triggering module that can function with various door types and gap sizes by simply adjusting the wheel position and pivot arm length. This multi-functional design eliminates the need for different specially shaped run-up ramps for different applications, providing both manufacturing simplicity and adaptability.
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 allows for efficient operation in pivot doors with minimal space requirements, reduces abrasive wear on the door frame and actuating parts, and can be easily adapted to different door gap dimensions.
Implementation Method 1
The wheel (81) is arranged in or on the pivot arm (80) and is designed to bear against a fixed stop surface of the door frame
Data Source
AI summary
A seal device for a door with a pivotable door leaf includes a drop-down seal for arrangement on or in the door leaf. The drop-down seal has a housing profile rail, a sealing strip which can be raised and lowered relative to the housing profile rail, a lowering mechanism for raising and lowering the sealing strip, and an actuating part, wherein the actuating part actuates the lowering mechanism when the door leaf is being closed. The seal device includes a triggering module with a wheel, wherein the triggering module acts on the actuating part when the door leaf is being closed. The triggering module is designed for arrangement on or in the door leaf and/or is arranged fixedly on the housing profile rail. This seal device is suitable in particular for pivot doors.