Air-tightness joint with double female ends

Abstract

The invention discloses an air-tightness joint with double female ends which comprises an inner conductor at the center, an insulating medium coaxially sleeved outside the inner conductor, and an outer conductor with a stepped hole type inner cavity. The insulating medium is arranged in the stepped hole of the outer conductor and is coaxially arranged together with the outer conductor; a fixing block is connected to an opening part of a stepped hole of the outer conductor in a close fit manner; the fixing block and the step surface of the stepped hole form axial limitation at two ends of the insulating medium. The air-tightness joint with double female ends has a simple structure, good air tightness, strong environment tolerance, reliable mechanical performances, excellent electric performances and high assembling efficiency, and is suitable for production on a large scale.

Description

Technical field: [0001] The invention relates to an airtight double cathode, in particular to an airtight N-type double cathode. Background technique: [0002] At present, a simple wrap-around structure is commonly used for N-type double cathodes. Such as Figures 2A-2C It is a snap-in structure, and the specific operation is to first use special tooling to spread the insulator 7 along the cutting seam 71, then snap the jack 8 into the inner hole of the insulator 7, and then use special tooling to crimp the insulator 7 to the shell 9 , thus producing a traditional N-type double negative. The structure of this method is too simple, and there are three major disadvantages: one is that the product cannot achieve airtightness, because the insulator 7 is provided with the cutting seam 71 of the card jack 8 in the radial direction, even if it is installed in the casing 9, it cannot The complete sealing of the cutting seam 71 is realized, so that the product cannot achieve airtig...

AI Technical Summary

Problems solved by technology

The structure of this method is too simple, and there are three major disadvantages: one is that the product cannot achieve airtightness, because the insulator 7 is provided with the cutting seam 71 of the card jack 8 in the radial direction, even if it is installed in the casing 9, it cannot The complete sealing of the cutting seam 71 is realized, so that the product cannot achieve airtightness; the second is that the index stability is poor, because the insulator 7 and the shell 9 cannot be effectively fixed, resulting in the insulator 7 being radially and axially in the shell 9. The third is the poor environmental resistance. Since the airtightness cannot be achieved, corrosive gases and pollutants cannot be prevented from entering the interior of the connector, causing corrosion inside the connector and reducing the service life of the product.

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