This is my Bayonet Connection for an Intex Pool Vacuum Adapter. I use it for fast switching the connection between the Pool skimmer and the vacuum cleaner. The bayonet Connector is for 32mm or 40mm hose.
If the Hose Adapter does not fit exactly in the Input Adapter, you can reduce the base of the Hose Adapter a little bit with Sandpaper
Special thanks to Henrik Sozzi who inspired me for this design and for the base of the input adapter. https://www.thingiverse.com/thing:2430487