Sorry, no. I did try googling and came up with several sites regarding parental consent for international travel, but nothing specifically Swiss related. Only thing I saw was that morst mairies (town halls) could do this. http://www.knowitall.ch/local-news/t...s-summer-alone
I would check with your town hall or the Swiss embassy whether this is needed or not though. Usually such a form/letter is used when you are divorced/separated/never married to your husband/partner or children have different names from the accompanying parent/guardian.
You might want to change your location in your profile - it still says Egypt. As cantons have their own rules for many things it helps to know where you're based when replying to questions.