| 摘要 |
The upper lock system of the passive door blade of a double door according to the invention comprises a bolt arranged to be installed to the upper surface of the passive door blade and arranged to be controlled by means of a pull bar. The bolt is a part of the lock. The lock also has a power transmission connection part for the interface part of the upper lock system. The interface part comprises a grabber module, power transmission module and a spring. The grabber module is arranged to linearly move between the extended position and the retracted position. A spring is arranged to push the grabber module towards the extended position. The power transmission mechanism is operationally connected with the grabber module and the power transmission connection part. |
