Shock absorber and washing machine with same

Abstract

The invention discloses a shock absorber and a washing machine with the same. The shock absorber comprises an outer cylinder with a buffer cavity, and a piston rod. The front end of the outer cylinder is provided with a damping chamber which is provided with a protective cover. The piston rod passes through the protective cover and the damping chamber to enter the buffer cavity. The part of the piston rod, corresponding to the damping chamber, is provided with a damping ring. A plurality of oil cavities are evenly reserved in the damping ring. By the technical means of evenly reserving the oil cavities in the damping ring, the piston rod generates a large amount of heat during operating; when the temperature of the surface of the piston, in contact with the damping ring, rises, lubricating oil is separated from the surface, of a damping strip, in contact with the piston; and spare lubricating oil in the oil cavities is released continuously to keep the piston rod moist in contacting with the damping ring, so that operational stability and continuity of the shock absorber are improved and the service life of the shock absorber is prolonged.

Description

technical field [0001] The invention relates to a shock absorber, in particular to a shock absorber and a washing machine equipped with the shock absorber. Background technique [0002] Existing drum-type washing machines include a casing forming an appearance, a washing tub arranged in the casing for storing washing water, a drum rotatably arranged in the washing tub for washing and dehydrating clothes, and Behind the tub and connected to the drum's drive motor. The shell is triple-protected by phosphating, electrophoresis, and spraying, and two heavy weights are used to balance the huge centrifugal force generated when the drum rotates to make repeated motions, and the combined action of washing powder and water makes the clothes clean. Specifically, the door through which clothes are put in or taken out is rotatably set on the front surface of the casing, and the rotating shaft support for supporting the drum is set behind the washing tub, the spring is fixed on the casi...

AI Technical Summary

Problems solved by technology

However, in the prior art, the lubricating oil of the shock absorber is directly sprayed on the piston rod or the damping strip is immersed in oil and then placed on the piston rod. The piston rod will generate a large amount of heat during work. When the temperature rises sharply , the lubricating oil will be separated from the contact surface between the damping strip and the piston rod, resulting in poor lubrication, which will sharply increase the friction between the damping strip and the piston rod, and even cause damage to the damping strip, resulting in unstable shock absorption of the shock absorber during work. And shorten the service life of the shock absorber, increase the user cost

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