Closer apparatus

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, andcan easily control the resistance of the working fluid according to sections.

Description

technical field [0001] The invention relates to a door closer device, in particular, the invention relates to a damping device, a damping chamber and a torsion device of the door closer. Background technique [0002] In general, a door closer (closer) is installed on a door, etc., and after the door is rotated to open, if the force applied to the door is released, the door will rotate and close by itself. The door closer includes a damping device that generates a damping force through an operating fluid and a torsion device that generates a restoring force through a spring. [0003] As a damping device for a door closer, Korean Laid-Open Patent No. 10-2012-0124938 proposes a "rotary damper", which includes: a housing filled with operating fluid; a shaft that passes through the inside of the housing and can rotationally provided; a housing pin (housing pin), which is provided on the inner peripheral surface of the housing in such a manner as to reach the side of the shaft, a...

AI Technical Summary

Problems solved by technology

[0004] However, the above prior art has the following problems in actual production: because the operation control of the housing pin and the shaft pin is difficult, it is limited in accurately controlling the resistance of the operating fluid, and therefore, it is not only difficult to accurately control the operating fluid. Constraints and low reliability of damping

[0006] However, the above-mentioned prior art lacks consideration of the accumulation of spring elasticity, the reliability of the recovery operation using the spring, and the durability of the structure. It is necessary to eliminate the difficulties in actual production and save production costs.

Images