High-strength lower door and window frame connecting piece for aluminum alloy inward-opening door and window

• Main Author: ZHANG RUMEI
• Format: Patent
• Language: Chinese; English
• Published: 29.11.2019
• Subjects: BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS ORWINDOWS; FIXED CONSTRUCTIONS; HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS; KEYS; LOCKS; SAFES; WINDOW OR DOOR FITTINGS

The utility model discloses a high-strength lower door and window frame connecting piece for an aluminum alloy inward-opening door and window. The door and window frame comprises a frame fixing strip,a door and window sash fixing strip, a frame connecting strip, a door and window sash connecting strip and strip-shaped clamping blocks. A strip-shaped clamping block is fixedly installed below the frame fixing strip through screws, the frame fixing strip, the door and window sash fixing strip, the frame connecting strip and the door and window sash connecting strip are connected through hinge shafts to form a four-connecting-rod mechanism, the strip-shaped clamping block is fixedly installed on a door and window frame, and the door and window sash fixing strip is fixedly installed on a doorand window sash. According to the connecting piece, a point acting force mode of an existing connecting piece is optimized into a surface acting force mode, the bearing capacity of the connecting piece is improved, the mountin