Executor comprising speed reduction mechanism and motor

Abstract

The invention discloses an executor comprising a speed reduction mechanism and a motor, wherein the speed reduction mechanism comprises a worm comprising worm teeth, a worm gear comprising worm gear teeth meshed with the worm teeth, a first enclosure provided with one bearing assembly, a second enclosure provided with the other bearing assembly, an adjustor with threads and a fastener with threads; two ends of the worm can be supported to rotate by the bearing assembly of the first enclosure; the worm gear can be supported to rotate by the other bearing assembly of the second enclosure; the first enclosure and the second enclosure are configured in a way that a gap exists between the combined surfaces of the first enclosure and the second enclosure; the adjustor with threads is configured to adjust the size of the gap; the fastener with threads is configured to fix the first enclosure and the second enclosure; the gap between the first enclosure and the second enclosure is adjusted by the adjustor with threads, so the gap between the worm and the worm gear is simply adjusted.

Description

technical field [0001] The invention relates to an actuator including a reduction mechanism and a motor, especially, the reduction mechanism includes a worm and a worm wheel. Background technique [0002] In communication equipment, in order to achieve antenna rotation, an actuator including a reduction mechanism and a motor is often used. The actuator generally utilizes a worm and a worm gear that mesh with each other to drive the rotation of the antenna mounted on the worm gear, thereby adjusting the rotation angle of the antenna. In order to adjust the rotation angle of the antenna more precisely, it is necessary to adjust the gap between the worm and the worm wheel. Conventionally, various studies have been conducted on how to adjust the clearance between the worm and the worm wheel. For example, Japanese Patent Laid-Open No. 2012-197029 discloses a structure in which the worm (2) approaches the worm wheel (1) by applying force to the second bearing (11) through the co...

AI Technical Summary

Problems solved by technology

[0003] However, in the case of using a coil spring to adjust the clearance between the worm and the teeth of the worm wheel, it is necessary to select a coil spring with an appropriate spring constant, and it takes time

In addition, due to the expansion or contraction of the coil spring due to the temperature change of the external environment, there is a danger that the gap between the teeth of the worm and the worm wheel cannot be maintained at an appropriate gap, causing problems.

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