Automatic Seal Damper Delaying Lowering
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Solution Overview
Problem
Automatic seals with a damper experience a delay in the movement of the sealing strip compared to the force introduction element, causing the force introduction element to protrude more than necessary, which can lead to space constraints and render the seal unusable in certain applications.
Innovation Solution
The first spring is prestressed in the non-actuated state, reducing the distance the force introduction element needs to travel to initiate movement of the damper, allowing for reduced protrusion and improved space efficiency by ensuring the tension of the first spring is greater than or equal to the restoring spring and the minimum force required to actuate the damper.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a damper is used to delay the movement of the sealing strip, then the sealing performance is improved, but the force introduction element protrudes more from the holding element
Solution Approach 1:
The first spring is pre-tensioned in the unactuated state to store the minimum force required to actuate the damper. This preliminary action eliminates the need for the force introduction element to travel an additional distance to build up force, thereby reducing its protrusion while maintaining the damper's sealing function
Solution Approach 2:
The tension parameter of the first spring is changed from zero (in the prior art) to a pre-tensioned state equal to or greater than the sum of the restoring spring tension and the minimum damper actuation force. This parameter change allows the system to achieve damper actuation with reduced force introduction element displacement
2Volume of moving object
If the first spring is pre-tensioned to reduce protrusion, then the space efficiency is improved, but the force required to actuate the seal increases
Solution Approach 1:
The first spring is pre-tensioned to store the minimum force required to actuate the damper in advance. This preliminary action ensures that when actuation is needed, the force introduction element does not need to travel an additional distance to build up the required force, thereby reducing protrusion while the total actuation force remains manageable
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
This solution reduces the protrusion of the force introduction element, enabling the seal to be used in tighter spaces by eliminating the delay in movement transmission and ensuring efficient actuation of the sealing strip without compromising the sealing performance.
Implementation Method 1
the first spring is tensioned in an unactuated state of the seal when the force introduction element is in the first position, so that the distance that the force introduction element has to travel in order to introduce the force into the first spring, which is necessary for the damper to enable movement, is reduced
Implementation Method 2
the damper is arranged at least indirectly between the motion transmission parts and the holding means... the damper dampens any movement of the rod in the direction of the force exerted by the first spring... the movement of the sealing strip from the first to the second position is also delayed compared to the movement of the force application element
Data Source
Figure 1~1a
Figure 2~2a
Figure 3~3a
AI summary
The invention relates to an automatic seal comprising: - a one- or multi-part retaining element (1), - a force application element (470) which is slidably mounted on the retaining element (1) from a first position to a second position, - a sealing strip (9) which is movable relative to the retaining element (1) from a first position to a second position, - a mechanism (42, 62) which is at least indirectly coupled to the force application element (470) and the sealing strip (9) so that a movement of the force application element (470) can be transmitted as a movement of the sealing strip (9) from the first position to the second position, - motion transmission parts (48, 41, 5, 61, 7) which transmit a movement of the force application element (470) to the mechanism (42, 62), - a first spring (473) and a damper (8),wherein - the first spring (473) is arranged at least indirectly between the force application element (470) and the motion transmission parts (48, 41, 5, 61, 7) and - the damper (8) is arranged at least indirectly between the motion transmission parts (48, 41, 5, 61, 7) and the holding means (1), - wherein the first spring (473) is tensioned when the force application element (470) is in the first position.