I have a dutch bike and over time the chain guard has come loose. It falls down and ends up resting on the chain.
The problem is that I can't see a obvious way to fix it. There is no external bolt or anything which I can see. It's attached to the same axel as the pedals.
The bracket holding (metal colored object in picture) it in place is curved to slot towards the frame and to lock it in place, but the problem is that it's got too much room to get close enough for that to happen.