Ventilation device
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Solution Overview
Problem
Existing ventilation devices face challenges in easy and reliable fastening to mounting openings in walls, particularly ceilings, due to inaccessible protruding parts during assembly and complex dismantling processes.
Innovation Solution
A fastening device with a support element having an angular shape and adjustable positions, including pre-fixing, assembly, and insertion positions, allows for easy hanging and secure mounting of ventilation devices in ceilings with varying thicknesses, using a pivotable and displaceable mechanism facilitated by an adjusting screw.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ventilation device is mounted in a ceiling opening with the housing introduced into the ceiling, then the ventilation device can be securely fastened in the mounting wall, but the protruding parts (support element) become inaccessible during assembly
Solution Approach 1:
The support element is designed to be movable relative to the base plate, allowing it to transition between different positions (retracted and protruding). This dynamic design enables the support element to be accessible during assembly and then secure the device after mounting, resolving the contradiction between accessibility and secure fastening.
2Ease of manufacture
If resilient latching lugs are used for self-locking attachment, then the housing latches automatically after passing through the floor opening, but dismantling becomes complicated requiring tools or tabs
Solution Approach 1:
The support element automatically engages with the ceiling opening and locks into position without requiring additional tools or components during assembly. The same support element can be disengaged by simply moving it back, providing both automatic latching and easy dismantling without the complexity of traditional resilient latching lugs.
3Device complexity
If fixed support element position is used, then the structure is simple, but the installation is not flexible for varying ceiling thicknesses
Solution Approach 1:
The movable support element design provides adjustment capability that accommodates varying ceiling thicknesses while maintaining a relatively simple overall structure. The support element can be positioned at different distances from the base plate to adapt to different mounting conditions, providing versatility without significantly increasing structural complexity.
Data Source
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AI summary
The present invention relates to a fastening device for fastening a ventilation device (1) in a mounting wall (M), which has a base plate (20) and a support element (21) which is movably arranged at least partially on one side of the base plate (20).The fastening device (2) is characterized in that the support element (21) has an angled shape with a first and a second leg (210, 211), the second leg (211) is directed downwards relative to the first leg (210), the support element (21) is slidably held on the base plate (20) at the first leg (210), and the support element (21) is pivotable relative to the base plate (20) so that the support element (21) can be positioned between a pre-fixed position in which the second leg (211) projects beyond the edge of the base plate (20), a mounting position in which the second leg (211) is pivoted downwards relative to the pre-fixed position, and an insertion position in which the second leg (211) projects beyond the edge of the base plate (20) by a projection that is less than the projection in the pre-fixed position. protrudes, is movable.Furthermore, the invention relates to a ventilation device with at least one such fastening device.