Eccentric Guide Pins for Sliding Facade Sealing
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Solution Overview
Problem
Existing sealing technologies for vertically slidable facade components, particularly in passive houses, face increased energy requirements and inefficiencies due to inadequate sealing performance.
Innovation Solution
A hardware system for slidable facade components, comprising a guide pin arrangement with eccentric bearing pins, an actuating rod arrangement, and an actuating device. The eccentric bearing pins are rotatably attached to the facade component and engage with a guide groove, allowing for transverse movement to press the component against a fixed frame, enhancing sealing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional guide pins are used for vertically slidable facade components, then the structure is simple, but the sealing efficiency is insufficient leading to increased energy losses
Solution Approach 1:
The guide pin is designed as an eccentric bearing pin with an offset rotation axis, allowing it to dynamically change its position relative to the guide groove during rotation. This dynamic movement enables the pin to press the facade component against the frame during closing while maintaining smooth sliding motion during opening, achieving both energy efficiency and operational simplicity
Solution Approach 2:
The eccentric bearing pin changes the geometric parameter of the guide mechanism by introducing an offset between the rotation axis and the pin center. This parameter change allows the pin to convert rotational motion into transverse pressing motion, improving sealing efficiency without significantly complicating the overall hardware structure
2Reliability
If the facade component is pressed tightly against the frame to improve sealing, then energy efficiency improves, but the sliding movement may become restricted
Solution Approach 1:
The eccentric bearing pin creates a dynamic sealing mechanism where the pressing force is applied only during the closing phase of the cycle. During opening and normal sliding, the pin rotates freely with minimal friction, maintaining ease of operation. The dynamic nature of the eccentric mechanism ensures that high sealing pressure and smooth sliding do not occur simultaneously, resolving the contradiction between reliability and ease of operation
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 proposed solution significantly improves sealing efficiency by ensuring a tight fit between the slidable facade component and the fixed frame, thereby reducing energy losses and meeting the stringent energy requirements of passive houses.
Implementation Method 1
The guide pins are each designed as eccentric bearing pins with an eccentrically arranged axis of rotation for rotatable attachment to the slidable facade component
Data Source
AI summary
A hardware for a slidable facade component includes at least two guide pins for a first side and at least two guide pins for a second side of the component. An actuating rod arrangement for transmitting an actuating force includes a first actuating rod and a second actuating rod for the first side and the second side, respectively, of the component. An actuating device is coupled to the drive rod assembly for transmitting the actuating force to the first and second drive rods with an actuation. The guide pins are eccentric bearing pins with an eccentrically arranged axis of rotation for rotatable attachment to the component and are provided for engagement with a guide groove arrangement arranged in the frame area. The eccentric bearing pins are each coupled to one of the drive rods via a coupling element and are rotatable via a longitudinal movement of the drive rods.