Coaxial lightning arrester

Abstract

The invention belongs to a microwave communication device, and relates to a coaxial lightning arrester used in radio frequency coaxial equipment. The coaxial lightning arrester comprises a transverse housing and a longitudinal housing which are perpendicular to each other; an insulator and a transverse centre conductor are arranged inside the transverse housing, a coaxial joint is arranged at the two ends of the transverse housing and the transverse centre conductor; a longitudinal centre conductor is arranged inside the longitudinal housing, the lower end of the longitudinal centre conductor is connected with the transverse centre conductor, the upper end of the longitudinal centre conductor is spliced with an upper cover of the longitudinal housing; the longitudinal centre conductor is of a hollow tube, and the wall of the tube is provided with a spiral flute running through the inside and the outside. a protuberant pin is arranged at the inside of the upper cover of the housing, and a jack matching with the pin is arranged at the upper end of the longitudinal centre conductor, and the wall of the jack is provided with a plurality of longitudinal slots which run through the inside and the outside and are evenly distributed along the circumference. The microwave communication device has the advantages of small longitudinal length, good electrical performance parameters, low manufacturing cost and high reliability.

Description

technical field [0001] The invention belongs to microwave communication devices, and relates to a coaxial lightning arrester used in radio frequency coaxial equipment. Background technique [0002] A coaxial arrester used in radio frequency coaxial equipment generally includes a transverse shell and a longitudinal shell perpendicular to each other. A transverse insulator and a transverse center conductor are arranged in the inner cavity of the transverse shell, and coaxial joints full of socket or pin structures are respectively arranged at both ends of the transverse shell and the transverse center conductor; The longitudinal central conductor is a solid rod-shaped structure, the lower end of which is connected to the transverse central conductor, and the upper end is plug-fitted with the upper cover of the longitudinal housing. In order to obtain better electrical performance parameters (frequency range, standing wave ratio, etc.), the length of the longitudinal central c...

AI Technical Summary

Problems solved by technology

In order to obtain better electrical performance parameters (frequency range, standing wave ratio, etc.), the length of the longitudinal center conductor is usually longer, making the length of the entire device longer, increasing the consumption of materials and occupying space

The structural strength of the longer longitudinal center conductor is low, and insulators are usually required to support the longitudinal center conductor, which also increases the manufacturing cost

In addition, the rigid insertion of the longitudinal center guide and the upper cover of the housing is not easy to ensure the reliability of the connection.

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