Pivotable Guide Rollers for Sealed Sectional Door Closure
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Solution Overview
Problem
Existing roll-up doors face challenges in achieving a sealed closure in the lintel region without damaging the slats or causing unwanted noise emissions, particularly when rolling up into a multi-layered roll.
Innovation Solution
The door design incorporates pivoting levers on the leading slat with guide elements that pivot relative to pivot axes parallel to the slat's longitudinal axis, allowing the sealing arrangement to shift and avoid contact with adjacent slat layers, while ensuring a reliable seal when the door is closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a seal is mounted to the leading slat to close the gap in the lintel region, then thermal insulation is improved, but the seal causes abrasion marks on slats and unwanted noise emission when rolling up
Solution Approach 1:
The guide element is made pivotable relative to the leading slat, allowing it to dynamically change its position and orientation. During rolling up, the guide element pivots to a first position where the seal is retracted away from adjacent slat layers, preventing contact and noise. When closed, it pivots to a second position where the seal engages with the lintel structure to provide thermal insulation.
Solution Approach 2:
The guide element acts as an intermediary mechanism between the leading slat and the seal. It controls the seal's position relative to the lintel structure and adjacent slat layers, enabling the seal to provide thermal insulation when needed while preventing harmful contact during operation.
2Loss of energy
If the seal is positioned to contact the lintel structure for sealing, then thermal insulation is improved, but contactless operation during rolling up cannot be achieved
Solution Approach 1:
The guide element's pivotability enables dynamic positioning: in the rolled-up state, it positions the seal away from adjacent layers for contactless operation; in the closed state, it positions the seal against the lintel structure for effective sealing and thermal insulation.
Data Source
AI summary
Door with a door leaf which, starting from a closed position, can be wound up to form a multi-layer winding in the course of an opening movement and has a plurality of slats which customarily extend horizontally with their longitudinal axes approximately perpendicular to the direction of the opening movement, and with a guide arrangement for guiding the opening movement comprising preferably helically shaped guide rails in the region of the lateral edges of the slats in planes extending approximately perpendicularly to the longitudinal axes of said slats, and guide elements mounted on lateral edges of the slat which leads during the opening movement can be introduced into the radially outermost windings of said guide rails, wherein the guide elements (42) are fastened to the lateral edges of the leading slat (40) via pivot levers (50) on the leading slat and are mounted on the slat so as to be pivotable with respect to pivot axes extending parallel to the longitudinal axis of the slat.