Durable rotary electric contactor

Abstract

This invention relates to a rotating electric contact device with long operation life containing a rotating electric contactor and a stationary contactor mounted in a sealed case filled with isolating lubricating oil the said rotating electric contactor is a slip ring (collector ring) or commentator, the said stationary electric connector is electric brush inducing brush thread and carbon brush. The method of this invention can completely lubricate the rotating electric contactor to greatly reduce friction and water, favorable for increasing the stability of the contact resistance. The flow and circulation of the isolation lubricating Gill makes the electric contactor fully cooled to increase its loading capacity as working under rather low temperature.

Description

technical field [0001] The invention relates to a rotating electrical contact device with a long service life. The rotating electrical contact generally refers to an electrical contact device that performs relative motion in a rotating manner, including brushes, collector rings, differential bus rings and electronic components. Rotary potentiometers, rotary switches and other electrical contact devices that perform relative motion in a rotating manner. Background technique [0002] Rotating electrical contact devices are widely used in motors, electrical appliances, and instruments. Friction and wear are unavoidable in the working process. In order to reduce friction and wear and prolong the working life of rotating electrical contact devices, the technical measures currently adopted are: [0003] 1. Coat the metal surface with a solid lubricant coating, such as graphite, molybdenum disulfide, niobium diselenide, contact solid lubricant BY-2, "823", etc.; [0004] 2. The br...

AI Technical Summary

Problems solved by technology

[0008] 1. Since the lubricating ability of solid lubricants is not as good as that of liquid lubricants, and it is impossible to apply too thick (too thick, it will become an insulating layer), the lubrication is not sufficient, and the solid lubricants are easy to be taken away with the wear products, and the later wear is faster

[0009] 2. In practice, sometimes a liquid lubricant (such as mineral lubricating oil) is applied to the metal surface, which can reduce friction and noise in a short period of time, but it can only be used as a temporary measure, because the liquid lubricant is easy to volatilize and lose. And it is easy to spread to the insulating surface, so that dust and wear products are easy to adhere to the metal surface and insulating surface, which will increase the wear and cause short circuit, so it is generally regarded as a taboo

[0010] 3. The wear products cannot be effectively taken away

[0012] 5. Does not have protection in special environments, such as underwater, vacuum or corrosive media

[0013] Due to the constraints of the above factors, the rotating electrical contact device often becomes the most expensive and shortest-lived link in some systems, and because of its position in the system, it is difficult to backup or switch

In an environment that is inaccessible to personnel, it often leads to the failure of the entire system

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