A new type of manual cap screwing mechanism with self-locking function

Abstract

The invention discloses a hand-operated rotation cover mechanism with a self-locking function. The hand-operated rotation cover mechanism comprises a hand-operated rotation cover, a transmission shaft and a transmission joint, wherein the bottom of the hand-operated rotation cover is provided with a gear-shaped groove and multiple claws; one end of the transmission shaft is provided with clamping grooves, and the transmission shaft is in cooperative connection with the claws on the hand-operated rotation cover through the clamping grooves; and the transmission joint sleeves the transmission shaft, the front end of the transmission joint is provided with a projection portion, and the projection portion and the gear-shaped groove are engaged with each other so as to realize a self-lock function. According to the invention, the transmission shaft is provided with the two clamping grooves, when the claws on the hand-operated rotation cover are clamped in the first clamping groove, the hand-operated rotation cover can rotate freely, when the claws are clamped in the second clamping groove, the projection portion on the transmission joint is clamped in the gear-shaped groove at the bottom of the hand-operated rotation cover, an engagement self-lock function is exhibited, and the structure and the technology are more practical and simpler than that of a hand-operated rotation cover mechanism with one groove. Under influences of external forces, the hand-operated rotation cover can be effectively prevented from rotation, change of an electrical downward inclination angle of a tunable antenna is prevented, and the conversation quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of mobile communication base station antennas, in particular to a novel manual screw cap mechanism with self-locking function. Background technique [0002] In 2013, the issuance of LTE licenses in China led to the official launch of 4G network construction and market competition in China, paving the way for the coming era of big data. In the LTE era, operators urgently need antenna solutions that are easy to operate, high in efficiency, low in cost, and highly flexible to meet the increasing demands for network optimization. [0003] The traditional mechanical downtilt antenna controls the downtilt of the antenna by adjusting the mechanical downtilt arm of the antenna on the site. This solution has three major defects: [0004] 1 Cannot meet the "optimum" downtilt angle in all frequency bands; [0005] 2 The mechanical downtilt causes the antenna pattern to be distorted; [0006] 3 The optimization effic...

AI Technical Summary

Problems solved by technology

[0004] 1 Cannot meet the "optimum" downtilt angle in all frequency bands;

[0005] 2 The mechanical downtilt causes the antenna pattern to be distorted;

[0006] 3 Optimization efficiency is low and cost is high

Since the manual capping mechanism of most manufacturers’ electric adjustable antennas does not have self-locking function, relying on the friction between the screws to make it difficult to rotate, but after a long time, the manual capping mechanism may be affected by external forces such as wind, etc. Rotation occurs, thereby changing the electrical downtilt angle of the electric adjustable antenna, changing the sector coverage of the antenna, increasing interference, and affecting call quality, etc.

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