Concealed hinge capable of being sequentially opened and closed at large angle

Abstract

A door and window blind hinge capable of being sequentially opened and closed at a large angle comprises a frame hinge piece, a door and window blind hinge, a door and window blind hinge and a door and window blind hinge body. The frame hinge piece is parallel to a frame sash relative rotation axis and fixedly installed in a frame space of a door and window frame. The sash hinge piece is parallel to the frame hinge piece and is arranged in the sash inner space of the door and window sash; the two ends of the hinge arm are a frame hinge end and a sash hinge end respectively, the frame hinge end is hinged to the frame hinge piece and has a shape suitable for being retracted into and extending out of the space in the frame, and the sash hinge end is hinged to the sash hinge piece and has a shape suitable for being retracted into and extending out of the space in the sash; the frame damping device is arranged between the frame hinge piece and the frame hinge end, and is in a corner state in which the door and window sash is completely opened, a damping state in which damping is provided between the frame hinge piece and the frame hinge end, and a failure state in other corner states; and the sash damping device is arranged between the sash hinge piece and the sash hinge end, is in a corner state that the door and window sash is completely closed, is in a damping state for providing damping between the sash hinge piece and the sash hinge end, and is in a failure state in other corner states.

Description

technical field [0001] The invention relates to the technical field of hinges, in particular to a large-angle concealed hinge that can be opened and closed sequentially, which is suitable for anti-theft doors and windows with concealed hinges. Background technique [0002] Anti-theft doors and windows are indispensable home security products in people's daily life. For doors and windows facing the aisle or the terrace, in order to avoid blocking the aisle or the terrace after the doors and windows are opened, the door and window should be designed so that the door and window can be Hinges that open up to 180 degrees to connect door and window sashes to door and window frames. However, for safety doors such as anti-theft doors, hidden hinges that cannot be accessed from the outside of the door must be used due to safety requirements. And ordinary concealed hinge is because the hinge shaft is arranged in the door and window frame, only has the hinge pin shaft of single-piece ...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem of the serpentine swing phenomenon that the hidden hinge that can be opened 180 degrees in the prior art needs to set complex running tracks for some axes to limit the swing range.

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