Patent attributes
An anti-theft device for a bicycle includes a fork unit that has a first fork bar and a second fork bar. The first fork bar has a passage and the second fork bar has a receiving opening. A securing element can be arranged in the fork unit to pass through the first fork bar in the passage and engage in the receiving opening. The securing element passes through a spoke region of a front wheel of the bicycle. The securing element has an engagement contour that engages in the receiving opening. A locking unit with an electromechanical drive is arranged in the second fork bar. The locking unit has a locking contour, which is connected the electromechanical drive and engages in the engagement contour in the locking state. An electronic control unit controls the electromechanical drive to unlock the unit.