Switch mechanism for triggered bike circuits

The invention relates to a trigger switch with virtually no idle travel during mounting process. The wind-up pawl is in the normal position close to the transport teeth, so that the wind-up pawl or pull lever at the mounting process has to cover no free travel. When releasing operation is first reacted with an intermediate member, preferably with a bow spring, conveyed out the engaged standby wind-up pawl from the area of ​​the transport teeth and then disengaged the retaining pawl, so that the cable reel can be rotated by the pre-stressed cable without obstruction in the unwinding direction. The clip spring may bias even the sliding element with the retaining latch in holding direction in addition to the dowry function of the wind-up pawl.