Infanteer is correct, the current crown used on badges, etc., is not explicitly a "Queen's Crown." There would not be a requirement to change.
The crown colloquially known as the "King's crown" as found on badges of the Second World War is properly the "Tudor Crown."
The current crown, in all of its derivations of the past six decades is the British Imperial Crown, applicable to British monarchs of both genders. The alternate version that may be seen on some current badges as well as some pre-1900 helmet plate patterns, is the St Edward's crown, which was a proper Victorian era crown as well.
Badges of The Royal Canadian Regiment; Crowns, Cyphers and Stars
http://regimentalrogue.com/rcrbadges/rcr-badges_crowns.htm