Multi-drive apparatus for phase shifters

Patent metadata

Field	Value
Publication number	US-10490894-B2
Application number	US-201715628491-A
Country	US
Kind code	B2
Filing date	Jun 20, 2017
Priority date	Jun 22, 2016
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

A multi-drive apparatus for phase shifters is disclosed. The disclosed multi-drive apparatus for phase shifters includes: a main-axle gear; a multiple number of output shafts each connected to a phase shifter; a multiple number of output gears coupled with the output shafts; and a cam part having the output shafts arranged on its upper surface, where at least one recess is formed in the upper surface of the cam part, and when at least one of the output shafts is inserted into the recess according to a movement of the cam part, then an output gear coupled with the output shaft inserted into the recess engages the main-axle gear. With the disclosed multi-drive apparatus, it is possible to drive multiple phase shifters using just two motors.

First claim

What is claimed is:

1. A multi-drive apparatus for phase shifters, the multi-drive apparatus comprising:
a main-axle gear;
a plurality of output shafts each connected to a phase shifter;
a plurality of output gears coupled with the output shafts; and
a cam part having the output shafts arranged on an upper surface thereof,
wherein at least one recess is formed in the upper surface of the cam part,
and when at least one of the output shafts is inserted into the recess according to a movement of the cam part, then an output gear coupled with the output shaft inserted into the recess engages the main-axle gear.

2. The multi-drive apparatus for phase shifters of claim 1 , further comprising:
a first support part positioned above the output gears,
wherein each of the output shafts have a second support part formed thereon, elastic elements are mounted on the output shafts, the elastic elements mounted between the first support part and the second support parts,
and the elastic elements are mounted in a compressed state so as to provide elastic forces for enabling each output shaft to be inserted into the recess when positioned over the recess.

3. The multi-drive apparatus for phase shifters of claim 1 , wherein the recess comprises an inclined portion, and when an output shaft is inserted into and retracted from the recess, then the output shaft is smoothly inserted and retracted by way of the inclined portion.

4. The multi-drive apparatus for phase shifters of claim 1 , further comprising:
an input shaft penetrating through the cam part,
wherein the main-axle gear is coupled with the input shaft such that the main-axle gear rotates in accordance with a rotation of the input shaft.

5. The multi-drive apparatus for phase shifters of claim 1 , wherein a distal end of an output shaft contacting the cam part has a spherical shape so as to minimize friction.

6. The multi-drive apparatus for phase shifters of claim 1 , wherein a rotation of the main-axle gear causes the engaged output gear to rotate accordingly, a corresponding output shaft rotates in response to a rotation of the output gear, and a phase of a phase shifter having the output shaft connected thereto is changed according to a rotation of the output shaft.

7. The multi-drive apparatus for phase shifters of claim 1 , wherein the output gears all engage the main-axle gear when the output gears and the main-axle gear are arranged on a same plane.

8. The multi-drive apparatus for phase shifters of claim 1 , wherein none of the output gears engage the main-axle gear when the output gears are arranged on a same plane but the main-axle gear is not arranged on the same plane as the output gears.

9. The multi-drive apparatus for phase shifters of claim 2 , wherein an elastic member mounted on at least one of the output shafts positioned over the recess provides an elastic force continuously to enable the at least one output shaft to engage the main-axle gear, if the at least one output shaft is positioned over the recess but is not engaged with the main-axle gear.

10. The multi-drive apparatus for phase shifters of claim 1 , further comprising:
driven axles configured to drive the phase shifters respectively,
wherein the output shafts are inserted in the driven axles respectively, the output shafts have polygonal cross-sections at distal ends thereof, the distal ends configured for insertion into the driven axles, and the driven axle is driven by a rotation of the output shaft.

11. The multi-drive apparatus for phase shifters of claim 10 , further comprising:
a shaft nut mounted inside the driven axle,
wherein the shaft nut is configured to receive the output shaft inserted therein, the shaft nut having at least one protrusion formed on an inside thereof, the shaft nut undergoes a translational motion according to a rotation of the output shaft, and the output shaft is unable to further rotate in one direction if the shaft nut contacts the at least one protrusion as the output shaft rotates in said one direction.

Assignees

• Ace tech corp

Inventors

• Kim Byung Hwan
• Lee Seung Yong
• Oh Gun Seok
• Han Shin Gyo
• Lee Jung Wook

Classifications

• H02K7/116

  with gears · CPC title

• H01Q21/20

  the units being spaced along or adjacent to a curvilinear path {(slotted waveguide arrays H01Q21/005; circularly or helically slotted waveguides H01Q21/0062)} · CPC title

• H01Q3/32 Primary

  by mechanical means · CPC title

• H01Q3/30

  varying the {relative} phase {between the radiating elements of an array (H01Q3/2605, H01Q3/2658, H01Q3/2682, H01Q3/44 take precedence)} · CPC title

• H01Q1/125

  Means for positioning · CPC title