| 摘要 |
The present invention is to not nearly transmit a reinforcement force to maintain a door in a closed state with respect to a cam operating during a time when opening a door so as to maximize energy efficiency while minimizing the difference between an opening force and a closing force, thereby facilitating the opening of the door and improving durability and quality. The present invention comprises: a device body separately formed of a lower body and an upper body by forming bracket grooves and fixing holes so as to be mounted on the bottom surface of a door closure; a reinforcement means provided in the device body and generating reinforced force to completely close a door which has been opened; and an operator to receive the force of the reinforcement means and transmitting the force to the closure shaft of the door closure such that the door closure can obtain a strong closing force. |
