Filter capable of resisting electric wave signal interference

Abstract

The invention belongs to the technical field of filters, and particularly relates to an electric wave signal interference resistant filter which comprises a shell, an anti-interference coating is arranged on the outer side of the shell, mounting pieces are fixedly arranged at the two ends of the outer side of the shell, and screw holes are formed in the opposite sides of the two mounting pieces at equal intervals. A limiting groove is formed in the side, away from the shell, of the mounting piece, the limiting groove communicates with the screw hole, and a screw is in threaded connection with the interior of the screw hole. A mounting rod can be positioned through clamping connection of a clamping block and an annular clamping groove, so that a second connecting rod is positioned, meanwhile, a first nut is positioned through mutual clamping and fixing of a positioning block on the second connecting rod and a positioning groove in the first nut, and therefore the probability of relative rotation between the first nut and a screw rod is reduced; and furthermore, the frequency and probability of looseness between the first nut and the screw rod are effectively reduced, so that the screw rod and the first nut are connected more firmly, and normal use of the filter is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of filters, and in particular relates to a filter for resisting radio wave signal interference. Background technique [0002] A filter is a filter circuit composed of capacitors, inductors and resistors. The filter can effectively filter the frequency point of a specific frequency in the power line or the frequency other than the frequency point to obtain a power signal of a specific frequency, or eliminate the power signal of a specific frequency, in order to improve the filter's resistance to radio signal interference The ability of the filter is generally coated with an anti-interference coating on the filter shell. [0003] Problems existing in the prior art: [0004] Traditional filters are generally installed on the corresponding equipment through the mutual cooperation of screws and nuts. At the same time, the filter sometimes needs to be installed outdoors. When the filter is installed outdoors, be...

AI Technical Summary

Problems solved by technology

[0004] Traditional filters are generally installed on the corresponding equipment through the mutual cooperation of screws and nuts. At the same time, the filter sometimes needs to be installed outdoors. When the filter is installed outdoors, because it is often windy outside, when it is windy, the filter may The filter vibrates, so that the nut rotates when the filter vibrates, and then loosens between the nut and the screw. In severe cases, the installation of the filter may not be firm enough, affecting the normal use of the filter.

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