Sofa hinge,used to connect the sofa backrest and seat cushion, the height of the sofa backrest can be adjusted, suitable for connecting the armrest and the seat.
а.Принцип работы: Through the opening and closing operation of the gears, the angle between the pillow, seat and bed is changed.
The deformation between the sofa and the bed is realized, and it plays a certain buffering role when closed.
b.High-quality material: stamped with carbon steel, the surface is plated with black zinc.
Not easy to rust, more durable than general metal structures, and the opening angle is about 85°.
в.Long service life: The strong spring consists of 15 coils, is very elastic, and has been tested for more than 100,000 cycles.
Installation tips: Due to the different materials and thicknesses of the mounting plates, you need to choose screws of different lengths according to the installation video to avoid installation failure due to errors.
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