Title:
WINDOW OPENING/CLOSING SYSTEM
Document Type and Number:
Japanese Patent JP2023061511
Kind Code:
A
Abstract:
To provide a window opening/closing system which can alleviate an operation load acting at the time of closing of a window body, and which can easily close the opened window body without requiring a large force.SOLUTION: A rotary mechanism of a window opening/closing system 10 includes: a rotary rod 25 installed at a window frame 12 rotatably; an operator 24 for high window for rotating the rotary rod 25; a roller for unwinding a revolving chain according to the rotation of the rotary rod 25, and for winding the revolving chain; and a first torsion spring which is installed at the rotary rod 25, and in the case of being twisted in the winding direction or in the reverse direction from the winding direction, which exhibits a torque in proportion to an angle twisted in the reverse direction from the twist. In the opening/closing system 10, when the rotary rod 25 rotates in the direction of unwinding the revolving chain, the first torsion spring is twisted in the winding direction or in the reverse direction from the winding direction and the first torsion spring exhibits a winding torque, and a rotation load acting on the rotary rod 25 in the case of revolving a window body 13 from an open state to a closed state is alleviated by the winding torque of the first torsion spring.SELECTED DRAWING: Figure 1
Inventors:
OISHI MAMORU
HIRATSUKA TETSUYA
HIRATSUKA TETSUYA
Application Number:
JP2021171435A
Publication Date:
May 02, 2023
Filing Date:
October 20, 2021
Export Citation:
Assignee:
OILES ECO CORP
International Classes:
E05F1/02; E05F1/14; E05F11/04; E06B3/38
Attorney, Agent or Firm:
Yoshitaka Kobayashi