Lifting Door Guide Diagonal Displacement for Sealing Wear

Solution Overview

Problem

Existing lifting door systems experience significant wear and unreliable sealing due to the sliding motion of the door leaf, particularly in the lower region, leading to alignment issues between guide sections and reduced operational reliability, especially at high speeds.

Innovation Solution

The lifting door design features a drive unit with a sealing assembly and guides that displace diagonally relative to the door leaf plane, allowing the door leaf to press against the sealing assembly like a rigid element, reducing wear and maintaining alignment, thus ensuring a reliable and long-lasting sealing effect.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If lip seals are used to seal the movement gap between the door leaf and door opening, then sealing is achieved, but the sealing elements are subject to considerable wear due to sliding motion at high speeds

Engineering Contradiction:

Improvesealing reliabilityVSAvoidservice life of sealing elements

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The guide is designed to be displaceable relative to the frame in a direction diagonal to the door leaf plane. During door closure, the guide displaces to press the door leaf against the sealing assembly, creating a dynamic sealing mechanism that adapts to the closing motion while maintaining consistent sealing pressure throughout the movement cycle

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

Instead of sealing elements sliding along the door leaf in the traditional direction, the guide displacement occurs in a diagonal direction relative to the door leaf plane. This dimensional change transforms the sealing mechanism from linear sliding contact to angled pressing contact, reducing wear on the sealing elements while maintaining effective sealing

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Productivity

If the door leaf slides along the sealing elements at high movement speed, then fast operation is achieved, but abrasion occurs especially on the sealing elements

Engineering Contradiction:

Improvedoor operation speedVSAvoidabrasion of sealing elements

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The guide is designed to be displaceable relative to the frame in a direction diagonal to the door leaf plane. During door closure, the guide displaces to press the door leaf against the sealing assembly, creating a dynamic sealing mechanism that adapts to the closing motion while maintaining consistent sealing pressure throughout the movement cycle

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

Instead of sealing elements sliding along the door leaf in the traditional direction, the guide displacement occurs in a diagonal direction relative to the door leaf plane. This dimensional change transforms the sealing mechanism from linear sliding contact to angled pressing contact, reducing wear on the sealing elements while maintaining effective sealing

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Stability of the object's composition

If the vertical section of the guide is firmly connected to the lintel section, then structural stability is achieved, but alignment issues occur during high-speed operation

Engineering Contradiction:

Improveguide section alignmentVSAvoidoperational reliability at high speed

Core Design Contradiction:

Stability of the object's compositionVSReliability

Solution Approach 1:

The guide is designed to be displaceable relative to the frame in a direction diagonal to the door leaf plane. During door closure, the guide displaces to press the door leaf against the sealing assembly, creating a dynamic sealing mechanism that adapts to the closing motion while maintaining consistent sealing pressure throughout the movement cycle

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

Instead of sealing elements sliding along the door leaf in the traditional direction, the guide displacement occurs in a diagonal direction relative to the door leaf plane. This dimensional change transforms the sealing mechanism from linear sliding contact to angled pressing contact, reducing wear on the sealing elements while maintaining effective sealing

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS9347257B2Lifting door having a movable door leaf guide

Publication Date: 2016.05.24 EFAFLEX INZENIRING D O O LJUBLJANA

AI summary

The invention relates to a lifting door, comprising a movable door leaf made of slats, the slats being connected to one another so as to bend, and comprising structure-mounted frames. Lateral guides for the door leaf having a vertical section and a lintel section, and frame sealing elements of a sealing assembly are arranged thereon, which close a gap between the door leaf and a section of the frames facing the door opening when the lifting door is closed. The lintel sections of the guides, together with the vertical sections of the guides, are displaceably mounted on the frames, wherein the guides can only be displaced in a direction that is diagonal to the door leaf plane, but not in a moving direction of the door leaf. Thus, an improved lifting door having greater operational safety, and at the same time an improved sealing effect between the door leaf and the door opening can be achieved.