Door and window pulley hinge device and sliding door and window system

• Main Authors: FU HAI, CAO XIONGHUI
• Format: Patent
• Language: Chinese; English
• Published: 01.12.2020
• Subjects: FIXED CONSTRUCTIONS; HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS; KEYS; LOCKS; SAFES; WINDOW OR DOOR FITTINGS

The utility model is suitable for the technical field of doors and windows, and discloses a door and window pulley hinge device and a sliding door and window system. The door and window pulley hinge device comprises a front pulley hinge part, the front pulley hinge part comprises a front wheel part and a first hinge part; the front wheel component comprises a front wheel frame, the front wheel frame is slidably connected with a first sliding block. The first hinge part comprises a first hinge arm and a second hinge arm which can be opened to a self-locking state; one end of the first hinge armis rotationally connected to the front wheel frame, one end of the second hinge arm is rotationally connected to the first sliding block, the other end of the second hinge arm is rotationally connected to the middle of the first hinge arm, and the first sliding block is connected with a first elastic piece used for driving the first sliding block to slide forwards. The sliding door and window system comprises the door an