The characteristic of damping hinges is that they can avoid the noise generated during closure, truly eliminating noise interference. Their groundbreaking technology in the industry fully demonstrates the concept of environmentally friendly design. By using hydraulic buffering technology, the door slowly closes on its own from 60 degrees, reducing the impact force.

Its principle and structure are similar to the appearance of old-fashioned air pumps. This type of hydraulic hinge is composed of a set of shaft sleeve telescopic rods, with springs and hydraulic chambers inside. The hydraulic chamber is divided into two chambers by a piston, and one chamber is filled with high-quality damping oil, which has good viscosity and fluidity; The room is filled with compressed air, and there are liquid circulation holes on the piston. This component is stretched by a spring and contracted by a hydraulic chamber to cushion and withstand external loads.

How can the function of damping be summarized as: ① Damping helps to reduce the resonance amplitude of mechanical structures, thereby avoiding structural damage caused by vibration stress reaching its limit; ② Damping helps mechanical systems quickly recover to a stable state after being subjected to instantaneous impacts; ③ Damping helps to reduce sound radiation caused by mechanical vibrations and lower mechanical noise. ④ Working in a dynamic environment requires high seismic resistance and dynamic stability, and various damping treatments can greatly improve its dynamic performance.

Requirements for damping oil: ⑴ The viscosity temperature curve should be stable, and within the temperature range required by the customer, the viscosity fluctuation of the damping oil should be very small. Generally, customers control the buffering time within 4 seconds.

⑵ High cleanliness. Due to the very small flow channels of liquid in the hydraulic chamber, if the cleanliness of the grease is not high, it is easy to cause channel blockage and inability to buffer; Therefore, from a microscopic perspective, the cleanliness of oil should be as high as possible, and the diameter of the solid particles contained should be very small.

⑶ High concentration and high specific gravity, but the viscosity index should not be too high. This structure does not simply rely on the viscosity of damping oil to buffer, blindly improving the viscosity index of damping oil will instead lead to the negative effect of the valve plate and sleeve easily sticking together and unable to move relative to each other. In addition, the higher the viscosity, the poorer the low-temperature performance of the damping oil, which is also unreasonable.

⑷ Strong antioxidant capacity and long service life. Generally, fatigue testing for this type of buffering should be done at least 100000 times. If the damping oil is prone to aging and cannot maintain its original characteristics for a long time, it will not be able to maintain consistent buffering effect of the product.