Large opening concealed hinge

A concealed hinge, large opening technology, applied in the field of concealed hinges, can solve the problems of not being able to open 180 degrees, exposed parts, etc., to achieve the effects of reducing shaking gaps, simple connections, and avoiding noise
CN106168091BActive Publication Date: 2018-04-13WONLY SECURITY & PROTECTION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
WONLY SECURITY & PROTECTION TECH CO LTD
Publication Date
2018-04-13

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Abstract

A large-opening hidden hinge of the present invention comprises a door and window hinge shaft (2) installed on the door and window (1) and a door and window frame hinge (5) installed on the door and window frame (4); A hinge arm (3) pivotally connected to the door and window hinge shaft (2) and the door and window frame hinge shaft (5); and a movement control mechanism. The movement control mechanism is arranged between the door and window frame (4) and the door and window frame hinge shaft (5), and controls the door and window frame hinge shaft (5) to approach the The door and window frame (4) contacts the side wall of the door and window sash (1), and controls the door and window frame hinge shaft (5) away from the door and window frame (4) contact with the door and window sash (1) closed The side wall of the door and window sash (1). The hinge shaft of the door and window frame of the present invention is movably arranged, so the hinge arm can adopt a smaller size, which facilitates the exquisite design of the door and window frame and better meets the requirement of 180-degree opening of the door and window leaf.
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Description

technical field

[0001] The invention relates to a door and window hinge, in particular to a concealed hinge capable of realizing a large opening. Background technique

[0002] For doors facing the aisle or terrace, in order to avoid blocking the aisle or terrace after the door and window are opened, hinges that enable the door and window to open 180 degrees should be used to connect the door and window to the door and window frame. 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 common concealed hinge is limited by the edge of door and window frame because hinge shaft is arranged in the door and window frame, can only make door and window leaf open about 90 degrees. In order to overcome this defect, Chinese patent document CN1358922A discloses a kind of invisible all-round door hinge, comprising: a curved rotating arm and a support mounting shaft seat, and one...

Claims

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