A cavity radio frequency module inductive coupling rod assembly with anti-loosening function

Abstract

The invention discloses a cavity radio frequency module inductive coupling bar assembly with an anti-loosing function. The cavity radio frequency module inductive coupling bar assembly with an anti-loosing function includes a screw and a locknut, wherein the screw and a cover plate of a filter are spirally coordinated in a penetrated manner; the locknut is coordinated with the cover plate to lockthe screw; a cylindrical hollow cavity is axially formed on the locknut; the inner wall of the cylindrical hollow cavity is a smooth inner wall which does not contact the outer peripheral face of thescrew; four tooth blades which are used for spirally coordinating with the thread of the screw are formed on the top surface of the locknut at certain radian; anti-loosing tooth angles which can increase the frictional force between the cover plates of the filter so as to realize the anti-loosing locking screw are formed at the bottom side surface of the locknut; each anti-loosing tooth angle is displayed in a right angled triangle structure; and the orientation of the 90DEG closed angle surface of the each anti-loosing tooth angle surface is opposite to the screwing direction of the locknut.The cavity radio frequency module inductive coupling bar assembly with an anti-loosing function has the advantages of being simple in structure, being able to reduce or eliminate the situation that the inductive coupling bar becomes poor in performance because of loosening, being able to greatly improve stability of signals, reducing the maintenance cost, and reducing the labor intensity.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an inductive coupling rod structure used in cavity radio frequency module products, in particular to a cavity radio frequency module inductive coupling rod assembly with anti-loosening function. Background technique [0002] RF modules such as cavity filter combiners are composed of multiple resonant cavities. Although the coupling data between each resonant cavity can be calculated accurately through computer simulation programs, the cavities obtained through mechanical processing are due to the existence of processing The error and inconsistency of the accuracy, so it is necessary to add an inductive coupling rod assembly for fine-tuning to meet the requirements of the electrical performance index. The traditional technique is to use nuts to fix the inductive coupling rod on the cavity cover. However, due to the stress after the nut is tightened and the product is affec...

AI Technical Summary

Problems solved by technology

However, due to the stress after the nut is tightened and the vibration of the product during transportation, the nut is easy to loosen or the inductive coupling rod rotates slightly, which changes the electrical performance index of the filter and deteriorates the product index.

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