The present invention relates to a trailer coupling for connecting a traction vehicle to a trailer is provided, comprising a coupling body; a guiding funnel pivotally connected to said coupling body, said guiding funnel being configured to receive and guide a drawbar; and two locking arms connected to opposite sides of said coupling body, wherein said locking arms may move between a locking position and an unlocking position, wherein in said locking position, said locking arms engages said guiding funnel so as to prevent it from pivoting relative to said coupling body, wherein in said unlocking position, at least a portion of each one of said locking arms is located further away from said guiding funnel than said portion is in said locking position, and wherein said locking arms are arranged to be pushed from a locking position to an unlocking position by a drawbar that is received in said guiding funnel.