Lower lock of the passive door blade of a double door

A lock of a passive door blade of a double door, comprising a lock body, a latch and a control wedge, the control wedge being arranged to linearly move to a position extended out from the lock and to a position retracted into the lock, wherein the lock also comprises a lever, a leading shaft and a spring system, the lever being rotatably attached by its first end to the control wedge directly through an axle, and rotatably and directly attached by its other end to the leading shaft, the leading shaft additionally being rotatably and directly attached to the lock body, the leading shaft having a control cam, the control cam removably receives the latch, the spring system being arranged to rotate the leading shaft towards the position in which the control cam keeps directly the latch inside the lock and in which the control wedge is in the extended position,

• the lever and the leading shaft being arranged to transfer force of the spring system to the control wedge so that the transferred force, which is parallel with the linear movement of the control wedge, is at its largest in the extended position of the control wedge and at its smallest when the control wedge is in the position retracted inside the lock, wherein the lever and the leading shaft are separate parts.