Abstract

A closer installed with a door according to the present disclosure uses a coupling between a damping device, a damping chamber, and a torsion device, to control in a stepwise manner a damping force exerted on a door and has a simple structure to achieve an excellent durability and a long lifespan. In addition, the present invention is to provide a closer, which can be easily assembled with a housing portion to enable easy forming of a fluid channel for a working fluid, and does not require a relatively high degree of precision, so that the closer can be easily manufactured, reduces the manufacturing cost thereof, contributes to accurately controlling a working fluid and improving the reliability of a damping operation thereof, can precisely control the resistance of the working fluid, and can easily control the resistance of the working fluid according to sections.

IPC Classes  ?

• E05F 3/08 - Closers or openers with braking devices, e.g. checksConstruction of pneumatic or liquid braking devices with liquid piston brakes in which a torsion spring rotates a member around an axis arranged in the direction of the axis of the piston
• E05F 3/14 - Closers or openers with braking devices, e.g. checksConstruction of pneumatic or liquid braking devices with fluid brakes of the rotary type
• E05F 3/20 - Closers or openers with braking devices, e.g. checksConstruction of pneumatic or liquid braking devices in hinges
• E05D 11/08 - Friction devices between relatively-movable hinge parts
• E06B 3/36 - Arrangements of wings characterised by the manner of movementArrangements of movable wings in openingsFeatures of wings or frames relating solely to the manner of movement of the wing with only one kind of movement with a single vertical axis of rotation at one side of the opening, or swinging through the opening
• E05F 3/04 - Closers or openers with braking devices, e.g. checksConstruction of pneumatic or liquid braking devices with liquid piston brakes