| I.P Abstract & Summary |
The closer according to the present disclosure, which is installed on a door, can control damping force applied to the door in a stepwise manner through coupling to the damping device, the damping chamber, and the torsion device, and has a simple configuration, thereby providing advantages in which durability is excellent and lifespan is long. Furthermore, the damping device of the closer can be easily manufactured, can reduce manufacturing costs, can improve the reliability of the accurate regulation and damping operation of working fluid, and can accurately control of the resistance of the working fluid. The damping chamber of the closer can facilitate the formation of a flow path for working fluid, can accurately control the resistance of the working fluid, and can enable the control of the resistance of the working fluid to be easily performed on an interval basis. |
