Sealing Device Stroke Limiting Mechanism for Window Frames

Solution Overview

Problem

Conventional sealing devices for windows and doors experience issues with large stroke movements, leading to misalignment and potential damage, as well as limitations in narrow seal designs, which result in a weakened door frame and reduced load-bearing capacity.

Innovation Solution

A sealing device with a mechanism that includes a means for limiting the stroke, such as a pivotably connected rod or wire, which counteracts the offset movement and allows for synchronized deflection of spiral springs to maintain horizontal alignment and prevent overhang, enabling larger strokes without damaging the frame.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of moving object

If the stroke of the sealing profile is increased to seal larger gaps, then the sealing effectiveness is improved, but the trigger may hit the frame surface causing damage and misalignment occurs

Engineering Contradiction:

Improvestroke of sealing profileVSAvoiddamage to frame and trigger

Core Design Contradiction:

Length of moving objectVSReliability

Solution Approach 1:

The patent applies dynamics by making the stroke limit adjustable rather than fixed. The stroke limiting means can be positioned at different locations along the longitudinal axis, allowing the maximum stroke to be dynamically adapted to different door configurations and gap sizes, preventing the trigger from hitting the frame while maintaining sealing effectiveness

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of stroke length by introducing an adjustable stroke limiting mechanism. The limit can be set to different positions along the longitudinal axis of the sealing profile, enabling optimization between sealing performance and prevention of damage based on specific application requirements

Inventive Principle:

Principle #35Parameter changes

2Length of moving object

If the stroke of the sealing profile is increased to seal larger gaps, then the sealing effectiveness is improved, but misalignment occurs on the release side

Engineering Contradiction:

Improvestroke of sealing profileVSAvoidalignment of sealing profile

Core Design Contradiction:

Length of moving objectVSManufacturing precision

Solution Approach 1:

The patent applies dynamics by making the stroke limit adjustable rather than fixed. The stroke limiting means can be positioned at different locations along the longitudinal axis, allowing the maximum stroke to be dynamically adapted to different door configurations and gap sizes, preventing the trigger from hitting the frame while maintaining sealing effectiveness

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The stroke limiting means acts in advance to prevent misalignment by restricting the maximum stroke before it can cause damage or misalignment issues on the release side

Inventive Principle:

Principle #9Preliminary anti-action

3Strength

If a narrow seal design is used, then the load-bearing capacity of the door frame is improved, but the mechanism cannot accommodate large stroke movements

Engineering Contradiction:

Improveload-bearing capacity of door frameVSAvoidaccommodation of stroke movement

Core Design Contradiction:

StrengthVSAdaptability or versatility

Solution Approach 1:

The patent applies dynamics by making the stroke limit adjustable rather than fixed. The stroke limiting means can be positioned at different locations along the longitudinal axis, allowing the maximum stroke to be dynamically adapted to different door configurations and gap sizes, preventing the trigger from hitting the frame while maintaining sealing effectiveness

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent segments the stroke control function by separating the sealing function from the stroke limitation function. The stroke limiting means is a distinct component that can be independently adjusted, allowing narrow seal designs to accommodate varying stroke requirements without compromising structural integrity

Inventive Principle:

Principle #1Segmentation

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 effectively limits the stroke and maintains horizontal alignment of the sealing profile, preventing misalignment and damage, while allowing for larger strokes without compromising the door frame's integrity.

Implementation Method 1

a first, displaceable end of the at least one first spiral spring is connected at least indirectly to the displaceably mounted trigger or to the trigger that is suitable and set up for displaceable mounting, a second end of the at least one first spiral spring is arranged immovably in the longitudinal direction of the seal or is suitable for immovable attachment

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentEP2474698B1Sealing device with a seal profile and a mechanism for displacing the seal profile when the mechanism is actuated

Publication Date: 2016.09.07 ATHMER

Figure 1a~2b
Figure 3a~6
Figure 7a~11b

AI summary

The device has a mechanism for displacing a sealing profile (30) during operation of the mechanism and comprising a trigger (40) displaceably supported in a longitudinal direction of the device for triggering the operation of the mechanism. The trigger has a spiral spring (60) e.g. plate spring and flexibly bendable wire, comprising a displaceable end indirectly connected with the trigger. The sealing profile is indirectly attached at the spring. The mechanism has a limiting unit (120) e.g. rod, wire, chain, rope and tape, for limiting movement of the profile in its longitudinal direction.