| 摘要 |
A partially pressing apparatus helping a door closing in a smoke restraining area is provided to transmit force created by a spring to a shaft without losing kinetic energy by converting rotation force of a rotation member into a linear movement in a guide groove. A partially pressing apparatus helping a door closing in a smoke restraining area comprises a movable plate(200), a rotation member(120), a support member, and a spring. The movable plate is provided with a groove and installed to a shaft of a door closer. A guide groove(102) is formed in the partially pressing apparatus. The rotation member is installed inside the partially pressing apparatus and engaged with the movable plate. The support member is assembled to the rotation member and supported by the spring. The guide groove is formed coaxially with the spring. The rotation member engaged with the movable plate moves linearly in the guide groove. The force of the spring adds 3 to 5 kgf to the closing force of the door closer via the shaft and arm frame. |
