In terms of durability, the flat hinge is better than the parent hinge because the length of the parent hinge is the same as the length of the ordinary hinge, but the inner and outer sheets of the parent hinge are overlapped. The effect is that the inner page is reduced, and the outer piece is hollowed out. From this point of view, the durability is certainly not comparable to the flat hinge with two complete pages, and the hinge rotation and bearing weight are often Depending on the middle ring, the degree of wear resistance of the middle ring and the degree of closure of the middle axis directly determine the bearing capacity of the hinge. The hinges are usually four central rings, and the mothers are two. From this point, it is also the mother. The durability of the hinge is higher than that of the flat hinge.

From the convenience of use and the adaptability to the door, the parent-child hinge undoubtedly has the absolute advantage. The biggest selling point of the mother-in-law hinge is that it is easy to use, because it is relatively flat and hinged, without slotting. It directly reduces the damage to the door, greatly enhances the beauty of the door. More importantly, some non-solid wood doors (composites) or hollow wooden doors can not withstand the slotting, and barely open the slot to open the hinge. After a period of time, there may be serious quality problems such as door leaf shedding, door leaf perforation, etc., and the unique design of the factor mother hinge is not directly installed in the slot, which enhances the integrity of the door and greatly enhances the hinge for various types. The applicability of the inner door.

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