Self-locking assembly and tuning device using same

Abstract

The invention relates to a self-locking assembly and a tuning device using the same. The self-locking assembly comprises a tuning screw rod and a fastener; the fastener is provided with an axial through hole, a threaded groove is formed in the inner wall of the through hole, a spiral coil is arranged in the threaded groove, and the spiral coil is partially protruded out of the threaded groove to form an internal thread; and the tuning screw rod is arranged in the spiral coil, the tuning screw rod comprises an external thread section and a tuning section formed at one end of the external threadsection, the external thread section is provided with an external thread matched with the internal thread, a part of the tuning section sequentially extends out of the spiral coil and one end of thethrough hole and is positioned outside the fastener. According to the assembly and the device, the three-order intermodulation of the tuning device can be reduced.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of radio frequency communication, in particular to a self-locking component and a tuning device using the self-locking component. [0003] 【Background technique】 [0004] In the self-locking assembly of the existing tuning device, the tuning screw is generally installed in the fastener, the external thread of the tuning screw cooperates with the internal thread of the fastener, and the tuning screw part protrudes from the fastener and extends into the tuning device. In the resonant cavity, when the tuning device needs to tune the frequency, it is usually necessary to change the matching position of the external thread of the tuning screw and the internal thread of the fastener so as to change the depth of the part of the tuning screw that extends into the resonant cavity. However, during the tuning process , because the internal thread is directly processed inside the fastener, when the external thre...

AI Technical Summary

Problems solved by technology

[0004] In the self-locking assembly of the existing tuning device, the tuning screw is generally installed in the fastener, the external thread of the tuning screw cooperates with the internal thread of the fastener, and the tuning screw part protrudes from the fastener and extends into the tuning device. In the resonant cavity, when the tuning device needs to tune the frequency, it is usually necessary to change the matching position of the external thread of the tuning screw and the internal thread of the fastener so as to change the depth of the part of the tuning screw that extends into the resonant cavity. However, during the tuning process , because the internal thread is directly processed inside the fastener, when the external thread and the internal thread are mated, a large amount of metal chips will fall into the resonant cavity due to friction between the two, resulting in a third-order interaction of the tuning device. tone

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