Electric adjustment control device and multi-frequency antenna

Abstract

The present invention provides an electric adjustment control device and a multi-frequency antenna, wherein the electric adjustment control device comprises a control mechanism and a plurality of frequency-selective phase-shifting modules, wherein the frequency-selective mechanism and the phase-shifting mechanism of each frequency-selective phase-shifting module are provided with a driving gear for independently receiving the driving torque, and the control mechanism comprises a first transmission mechanism and a second transmission mechanism, wherein the first transmission mechanism is used to output the driving torque, and the second transmission mechanism is used to adjust the output position of the driving torque of the first transmission mechanism along the same axis, so as to transmit the driving torque to the driving gear of the frequency-selective mechanism or the phase-shifting mechanism of one of the frequency-selective phase-shifting modules at the output position. The electric adjustment control device of the present invention can make the output gear mesh with each driving gear individually through its control mechanism, so that the output gear individually drives the driving gear meshed with it.

Description

Technical Field

[0001] The present invention belongs to the technical field of mobile communications, and in particular relates to an electric adjustment control device and a multi-frequency antenna equipped with the electric adjustment control device. Background Art

[0002] With the continuous increase in the number of mobile communication terminal users and the popularization of 5G, the demand for network capacity of mobile cellular network sites is increasing. At the same time, it is required to minimize the interference between different sites or even between different sectors of the same site, that is, to maximize network capacity and minimize interference. To achieve this goal, it is usually achieved by adjusting the downtilt angle of the antenna beam on the site.

[0003] When the antenna is a multi-frequency antenna, the beam downtilt angle is mainly adjusted by mechanical downtilt. Specifically, a transmission device is built into the antenna, and the transmission device is connected to the phase shift components corresponding to each frequency band in the multi-frequency antenna through multiple phase shift components. After the transmission device is engaged with any phase shift component through a phase shift gear, the phase shift gear is rotated to drive the phase shift component to control the movement of the phase shift component of the corresponding frequency band to implement the phase shift operation.

[0004] At present, in order to make the phase-shifting gear mesh with any one of the multiple phase-shifting components arranged in a straight line and drive the meshing phase-shifting components to move, the multi-frequency antenna is usually provided with a frequency-selective shaft for driving the phase-shifting gear to move linearly and a rotating shaft for driving the phase-shifting gear to rotate circumferentially. The motor or transmission mechanism providing power to the frequency-selective shaft and the rotating shaft is generally linked with the frequency-selective shaft and the rotating shaft at the same time, so that the frequency-selective shaft and the rotating shaft cannot rotate freely, so that the phase-shifting gear will be subjected to the self-locking force from the rotating shaft, so that the phase-shifting gear cannot rotate freely in the circumferential direction.

[0005] When the phase-shifting gear subjected to the self-locking force is driven by the frequency selection shaft to move linearly and mesh with any phase-shifting component, the phase-shifting gear cannot rotate freely in the circumferential direction, and the teeth of the phase-shifting gear are likely to be opposite to the teeth of the phase-shifting component, so that the phase-shifting gear is likely to jam the phase-shifting component or push the phase-shifting component to move, causing the phase-shifting component to be knocked off the predetermined track by the phase-shifting gear, so that the phase-shifting gear cannot mesh with the phase-shifting component that deviates from the track, causing the arrangement of the phase-shifting components of multiple frequency bands of the multi-frequency antenna to be chaotic, reducing the accuracy of the working frequency band of the multi-frequency antenna, and affecting the electric adjustment function of the multi-frequency antenna. Since the phase-shifting gear is constrained by the self-locking force from the motor and cannot rotate axially freely, the phase-shifting gear is likely to jam the phase-shifting component or push the phase-shifting component to move, affecting the frequency selection function. Since the motor needs to work with the driving gear and the transmission gear at the same time to drive the phase-shifting gear to rotate to drive the phase-shifting component to move, the load on the motor will be too large, greatly affecting the driving efficiency, and then the antenna tilt angle adjustment power is insufficient, affecting the reliability of the electric adjustment.

[0006] At present, the industry has added auxiliary mechanisms to the phase-shifting gears to realize the electric adjustment transmission phase shifting for each frequency band of the multi-frequency antenna, but has failed to solve the above self-locking problem. The phase-shifting gears of the multi-frequency antenna need to participate in a variety of transmission movements, such as a threaded hole for sleeve screws in the phase-shifting gear, so that the phase-shifting gear is directly driven by the screws to move linearly, so that the phase-shifting gear can mesh with any phase-shifting component, and the phase-shifting gear also needs to be directly sleeved with a phase-shifting shaft or a similar shaft structure so that the phase-shifting gear can rotate, so as to drive the meshing phase-shifting component to rotate circumferentially. Alternatively, a transmission gear is configured for the phase-shifting gear to drive the phase-shifting gear to perform linear or circumferential motion. However, whether the threaded hole and the shaft hole are set in the phase-shifting gear, or the transmission gear is configured, the phase-shifting gear must have a considerable size, so that the threaded hole and the shaft hole can be set on the phase-shifting gear, or the specifications of the phase-shifting gear are larger than the specifications of the transmission gear, so that the transmission device of the multi-frequency antenna cannot be miniaturized and the production cost cannot be reduced. Summary of the invention

[0007] The first object of the present invention is to provide an electric adjustment control device.

[0008] Another object of the present invention is to provide a multi-frequency antenna.

[0009] To achieve the purpose of the present invention, the present invention adopts the following technical solution:

[0010] The present invention provides an electric adjustment control device adapted to the first object, comprising a control mechanism and a plurality of frequency-selective phase-shifting modules, wherein the frequency-selective phase-shifting modules include phase-shifting components corresponding to a plurality of frequency bands, a frequency-selecting mechanism for selecting a phase-shifting component of one frequency band under the control of a driving torque, and a phase-shifting mechanism for performing phase-shifting control on the selected phase-shifting component under the control of a driving torque.

[0011] The frequency selection mechanism and phase shifting mechanism of each of the frequency selection and phase shifting modules are provided with a driving gear for independently receiving the driving torque. The control mechanism includes a first transmission mechanism and a second transmission mechanism. The first transmission mechanism is used to output the driving torque, and the second transmission mechanism is used to adjust the output position of the driving torque of the first transmission mechanism along the same axis so as to transmit the driving torque to the driving gear of the frequency selection mechanism or the phase shifting mechanism of one of the frequency selection and phase shifting modules at the output position.

[0012] Furthermore, in the same frequency-selective phase-shifting module, when the driving gear in its frequency-selective mechanism receives the driving torque, each phase-shifting component is in a locked state, and the position of the phase-shifting gear of its phase-shifting mechanism is changed until one of the phase-shifting components is fully engaged to release the locked state of the phase-shifting component; when the driving gear in its phase-shifting mechanism receives the driving torque to perform phase shifting on the engaged phase-shifting component, its frequency-selective mechanism is in a relatively static state.

[0013] Furthermore, the first transmission mechanism includes an output gear and a transmission pair for receiving external torque to control the rotation of the output gear and output the driving torque, and the second transmission mechanism includes a control box and a transmission pair for receiving external torque to control the control box to operate along the same axis, and the output gear is pivotally disposed in the accommodating space provided by the control box so as to shift along the same axis as the control box operates, thereby changing the output position of its driving torque.

[0014] Furthermore, the transmission pair of the first transmission mechanism includes a gear pair, a rotating shaft driven by the gear pair, and a rotating gear slidably mounted on the rotating shaft and driven to rotate by the rotating shaft. The rotating gear is pivotally mounted in the accommodating space provided by the control box and meshes with the output gear.

[0015] Furthermore, the transmission pair of the second transmission mechanism includes a gear pair, a rotating screw driven by the gear pair, and a screw hole formed in the control box and threadedly arranged with the rotating screw; the output gear of the first transmission mechanism can be freely rotatably sleeved on the stud forming the screw hole in the accommodating space, and the rotating screw is arranged parallel to the rotating axis of the first transmission mechanism.

[0016] Furthermore, all the driving gears of the multiple frequency-selective phase-shifting modules are arranged side by side on a coaxial line, and the second transmission mechanism is driven to adjust the driving torque output position of the output gear of the first transmission mechanism along the same axis, so that it engages with any one of the driving gears in the multiple frequency-selective phase-shifting modules at the output position and outputs the driving torque to the driving gear.

[0017] Specifically, in each frequency-selective phase-shifting module, two drive gears with the same end and the same specification are arranged side by side on a coaxial line, so that the drive torque can be switched between the two drive gears and linked to one of the drive gears.

[0018] Specifically, all the driving gears of the multiple frequency selection modules are arranged on the same tangent plane, and the second transmission mechanism is driven to adjust the driving torque output position of the output gear of the first transmission mechanism along the same axis, so that it engages with any one of the driving gears in the multiple frequency selection phase shifting modules at the output position, and outputs the driving torque to the driving gear.

[0019] Specifically, in each frequency-selective phase-shifting module, two driving gears are respectively fixed on different axes, a radial dimension of one driving gear is larger than a radial dimension of the other driving gear, and both driving gears have the same tangent surface.

[0020] Furthermore, the frequency selection mechanism includes a transmission screw and a linkage member, the linkage member is penetrated by a screw hole which is threadedly arranged with the transmission screw; the phase shifting mechanism includes a transmission shaft and a phase shifting gear, the phase shifting gear is slidingly sleeved on the transmission shaft and is freely rotated synchronously with the transmission shaft; the transmission screw is arranged in parallel with the transmission shaft, and the phase shifting gear is pivotally arranged in the accommodating space provided by the linkage member; the transmission screw and the transmission shaft are both provided with a driving gear for independently receiving the driving torque to drive their own rotation, and each driving gear runs on the same tangent plane.

[0021] Furthermore, the frequency selection mechanism and the phase shifting mechanism operate independently of each other, and the driving torque is selectively linked to any one of the two driving gears; when the driving torque is linked to the driving gear corresponding to the frequency selection mechanism, the linkage member drives the freely rotating phase shifting gear to engage with any one of the phase shifting components.

[0022] Furthermore, the linkage member is provided with an unlocking member, and the phase-shifting assembly is provided with a locking mechanism. The unlocking member is configured such that when it runs to the position where the phase-shifting gear is fully engaged with one of the phase-shifting assemblies, the unlocking member suppresses the locking mechanism to unlock the phase-shifting assembly, so that the phase-shifting assembly is in a freely movable state; otherwise, the unlocking member releases the locking mechanism to lock the phase-shifting assembly, so that the phase-shifting assembly is in an immovable state.

[0023] Furthermore, the frequency selection mechanism is fixedly provided with a driven gear at one end of its transmission screw, and the driven gear is meshed with the driving gear of the frequency selection mechanism. The phase shifting mechanism is fixedly provided with its driving gear at one end of its transmission shaft. The driving gear of the frequency selection mechanism is placed in a position coaxially and side by side with the driving gear of the phase shifting mechanism, and the two driving gears are arranged to operate independently of each other, and the driving torque is selectively linked to the two driving gears.

[0024] Specifically, the control mechanism is centrally arranged, and the plurality of frequency-selective phase-shifting modules are arranged on both sides of the control mechanism.

[0025] Preferably, the control mechanism is further provided with a pressure piece, which is provided with two spring-pressure plates corresponding to the driving gears of the frequency selection mechanisms of the two frequency selection and phase shifting modules on the left and right sides of the control mechanism, and the spring-pressure plates are engaged with the tooth grooves of the driving gears. When the second transmission mechanism is linked with one of the frequency selection and phase shifting modules, the linkage piece will press the spring-pressure plates corresponding to the linked frequency selection and phase shifting modules off the driving gears.

[0026] A multi-frequency antenna is provided to meet the second purpose of the present invention, including multiple phase shifting components corresponding to multiple frequency bands, which includes the electric adjustment control device as described in the first purpose, and each of the phase shifting components has a corresponding phase shifting component in the electric adjustment control device and is linked to it.

[0027] Compared with the prior art, the advantages of the present invention are as follows:

[0028] First, the frequency selection mechanism and the driving gears of the phase shift mechanism of the frequency selection phase shift module of the present invention are open to each other independently, and the driving torque is only linked to one of the two driving gears at any time, and the driving torque will not be linked to the two driving gears at the same time. When the driving torque is linked to the driving gear of the frequency selection mechanism, the driving gear of the phase shift mechanism is not constrained by the driving torque, so that the various components of the phase shift mechanism are not constrained by the driving torque, that is, the phase shift gear will not be affected by the self-locking force. When the driving torque drives the phase-shifting gear arranged in the linkage to move linearly, the transmission shaft is not constrained by the driving torque, so that the phase-shifting gear can rotate freely in the circumferential direction. Therefore, when the phase-shifting gear is aligned and meshed with the phase-shifting assembly, the phase-shifting gear can rotate in the circumferential direction so that the outer teeth of the phase-shifting gear can extend into the tooth grooves of the phase-shifting assembly, thereby preventing the phase-shifting gear from being stuck with the phase-shifting assembly or pushing the phase-shifting assembly to move due to the inability to rotate freely in the circumferential direction, thereby knocking the phase-shifting assembly off the predetermined track, causing the arrangement of each phase-shifting assembly to be disordered, and improving the reliability of the frequency selection function of the frequency selection phase-shifting module.

[0029] Secondly, the phase-shifting gear of the frequency-selective phase-shifting module of the present invention is arranged on the linkage part that forms the screw mechanism with the screw rod, and the phase-shifting gear is driven by the linkage part to move linearly, and the phase-shifting gear is only provided with an axial hole for sleeve-mounting the transmission shaft, so that the phase-shifting gear does not need to participate in the linear motion, so as to facilitate the miniaturization of the phase-shifting gear, thereby miniaturizing the frequency-selective phase-shifting module and the electric adjustment control device, avoiding the need for a larger phase-shifting gear in the traditional frequency-selective phase-shifting module or the electric adjustment control module to simultaneously realize linear motion and circumferential rotation. Moreover, the miniaturization of the phase-shifting gear of the present invention can save the number of parts of the frequency-selective phase-shifting module, reduce the production difficulty of the phase-shifting gear, and reduce the production cost.

[0030] Thirdly, the output gear of the present invention drives only one driving gear at the same time, avoiding the need for the traditional output gear to drive the output gear, the driving gear of the frequency selection mechanism and the driving gear of the phase shift mechanism at the same time, so that the phase shift mechanism performs phase shifting. The output gear drives only one driving gear at the same time, reducing the load on the output gear, thereby improving the output efficiency and extending the service life of the output gear.

[0031] In addition, the structure and transmission mode of the control mechanism of the electric control device of the present invention are simple and easy to control compared with the structure and transmission mode of the traditional control mechanism. The output gear of the traditional control mechanism needs to engage with two drive gears at the same time. Since the rotation angles of the two drive gears are different, the outer teeth of one drive gear may correspond to the outer teeth of the output gear, while the tooth grooves of the other output gear correspond to the outer teeth of the output gear, making it difficult for the traditional output gear to engage with two drive gears at the same time. However, the output gear of the electric control device of the present invention only needs to engage with one drive gear at a time, which greatly improves the clutch reliability compared with the traditional output gear that needs to engage with two drive gears at the same time.

[0032] In addition, the output gear of the first transmission mechanism of the control mechanism of the electronically adjustable control device of the present invention can be driven by the second transmission mechanism to move linearly, so that the output gear is engaged with one of the driving gears of the frequency selection mechanism and the driving gear of the phase shifting mechanism. The first transmission mechanism drives the output gear to rotate, so that the output gear drives the driving gear engaged therewith, so that the frequency selection mechanism implements frequency selection or the phase shifting mechanism implements phase shifting.

[0033] Additional aspects and advantages of the present invention will be given in part in the following description, which will become obvious from the following description, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0035] Figure 1 It is a structural schematic diagram of the electric adjustment control device of the present invention without a phase shifting component.

[0036] Figure 2 A schematic structural diagram of a row of phase shifting components configured for the electric adjustment control device of the present invention.

[0037] Figure 3 It is a structural schematic diagram of the electric adjustment control device of the present invention.

[0038] Figure 4 It is a partial enlarged view of the partial structure of the electric adjustment control device of the present invention.

[0039] Figure 5 It is a schematic structural diagram of the linkage parts and phase-shifting gear of the electric adjustment control device of the present invention.

[0040] Figure 6 It is a schematic diagram of the linkage member and the phase-shifting gear of the electric adjustment control device of the present invention from another perspective.

[0041] Figure 7It is a schematic structural diagram of the phase shifting component and the locking member of the electric adjustment control device of the present invention.

[0042] Figure 8 It is a schematic structural diagram of the locking member of the electric adjustment control device of the present invention.

[0043] Fig. 9 Another partial enlarged view of the electric adjustment control device of the present invention.

[0044] Fig.10 It is a schematic structural diagram of the control box and output gear of the electric adjustment control device of the present invention.

[0045] Fig.11 A cross-sectional view of a control box provided with an output gear and a rotating gear of the electric adjustment control device of the present invention.

[0046] Fig.12 It is a structural schematic diagram of the pressing member of the electric adjustment control device of the present invention.

[0047] Fig.13 It is a partial enlarged view of an electric adjustment control device according to another embodiment of the present invention. DETAILED DESCRIPTION

[0048] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and cannot be interpreted as limiting the present invention.

[0049] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0050] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as herein.

[0051] The present invention provides an electric adjustment control device, which can be connected to phase shifting components of multiple frequency bands of a multi-frequency antenna respectively, and the electric adjustment control device can accurately align the moving components that need to be moved and stably move the phase shifting components. The phase shifting assembly used for linking the phase shifting components in the electric adjustment control mechanism can be stably set at a predetermined position and will not deviate from the predetermined track; the phase shifting gear used for driving the phase shifting assembly of the electric adjustment control mechanism can rotate freely without self-locking, so that when the phase shifting gear is engaged with the phase shifting assembly, it will not be stuck with the phase shifting assembly or knock the phase shifting assembly off the predetermined track.

[0052] In an exemplary embodiment of the present invention, Figure 1 , Figure 2 and Figure 3 The electric adjustment control device includes a control mechanism and a plurality of frequency selection and phase shifting modules 20.

[0053] The frequency-selective phase-shifting module 20 includes phase-shifting components 21 corresponding to multiple frequency bands, a frequency-selecting mechanism that is controlled by a driving torque to select a phase-shifting component 21 of one frequency band, and a phase-shifting mechanism that is controlled by a driving torque to perform phase-shifting control on the selected phase-shifting component 21.

[0054] Specifically, the frequency selection mechanism includes a transmission screw 221 and a linkage member 222. Figure 5 The linkage member 222 is provided with a screw hole 2221 penetrating the linkage member 222, and the transmission screw 221 is screwed into the screw hole 2221. The transmission screw 221 and the screw hole 2221 constitute a screw mechanism. The transmission screw 221 is rotated to drive the linkage member 222 to move linearly along the transmission screw 221.

[0055] The phase shift mechanism includes a transmission shaft 231 and a phase shift gear 232. The phase shift gear 232 is slidably mounted on the transmission shaft 231. When the transmission shaft 231 rotates, the phase shift gear 232 is driven to rotate synchronously. Preferably, the transmission shaft 231 is a hexagonal prism, and the hole where the phase shift gear 232 and the transmission shaft 231 match is a hexagonal hole.

[0056] The transmission screw 221 is arranged parallel to the transmission shaft 231. Figure 5 and Figure 6The linkage member 222 is provided with a first accommodation space 2222 for accommodating the phase-shifting gear 232. When the transmission screw 221 rotates to drive the linkage member 222 to move linearly, the linkage member 222 will drive the phase-shifting gear 232 disposed in the first accommodation space 2222 to move linearly. Since the phase-shifting gear 232 is slidably sleeved on the transmission shaft 231, when the phase-shifting gear 232 is driven by the linkage member 222 to move linearly, it will not drive the transmission shaft 231 to rotate. The first accommodation space 2222 is provided with an opening 2223, so that the teeth on the phase-shifting gear 232 can be exposed to the outside through the opening 2223, so that the phase-shifting gear 232 can mesh with the phase-shifting assembly 21. Preferably, the first accommodation space 2222 is provided with two openings 2223, and the two openings 2223 are respectively facing the two rows of phase-shifting assemblies 21 disposed on both sides of the transmission screw 221, so that the phase-shifting gear 232 can mesh with the phase-shifting assembly 21.

[0057] In one embodiment, the linkage member 222 is box-shaped, and the phase-shifting gear 232 is disposed in the box-shaped linkage member 222 .

[0058] Combination Figure 3 and Figure 7 , the multiple phase shifting components 21 of the frequency-selective phase shifting module 20 are divided into two rows and are respectively arranged on both sides of the transmission screw 221, specifically on both sides of the direction perpendicular to the extension direction of the transmission screw 221, and each row of phase shifting components 21 are arranged in sequence along the extension direction of the transmission screw 221. Specifically, the two rows of phase shifting components 21 are parallel to each other, and the two rows of phase shifting components 21 are staggered with each other. Each phase shifting component 21 is connected to a phase shifting component of a frequency band of the multi-frequency antenna, and moving the phase shifting component 21 will drive the phase shifting component to move, thereby implementing phase shifting. In one embodiment, the phase shifting component 21 is in the shape of a rack, and the rack-shaped phase shifting component 21 is meshed with the phase shifting gear 232 through its spur teeth.

[0059] Combination Figure 7 The phase shifting assembly 21 is provided with a locking member 24, and the locking member 24 is used to lock the phase shifting assembly 21 that is not meshed with the phase shifting gear 232. When the locking member 24 locks the phase shifting assembly 21, the phase shifting assembly 21 cannot move.

[0060] Specifically, combined Figure 8The locking member 24 includes an elastic collar 241 and a pressing piece 242. The pressing piece 242 is arranged at the bottom of the elastic collar 241, and is arched, and is preset with an elastic force toward the top of the elastic collar 241. When the phase shift assembly 21 is arranged through the elastic collar 241, the pressing piece 242 will use its preset elastic force to push the phase shift assembly 21 toward the top of the elastic collar 241, so as to press the phase shift assembly 21 to the top position of the elastic collar 241, so that the phase shift assembly 21 cannot move freely. By being arranged in the locking member 24, the phase shift assembly 21 cannot move arbitrarily, so as to avoid the phase shift assembly 21 from moving when it is vibrated, thereby driving the phase shift component to move, causing unnecessary phase shift.

[0061] Each phase shifting component 21 of the frequency-selective phase shifting module 20 is provided with a locking member 24, so that each phase shifting component 21 will not be disturbed by the external environment and move automatically when it is not necessary to move, thereby driving the phase shifting components to perform unnecessary phase shifting.

[0062] The linkage member 222 is further provided with an unlocking member 2224 , and the unlocking member 2224 is used to release the phase shifting assembly 21 locked by the locking member 24 from a locked state to an unlocked state, so that the phase shifting assembly 21 can move freely.

[0063] Specifically, combined Figure 6 and Fig. 9 The unlocking member 2224 includes an unlocking platform 2225, and an elastic protrusion 2411 is provided on the top of the elastic collar 241. When the unlocking platform 2225 presses against the elastic protrusion 2411, the unlocking member 2224 applies a force to the elastic protrusion 2411 toward the bottom of the elastic collar 241, and the elastic collar 241 applies a force to the phase shifting assembly 21, and then the phase shifting assembly 21 applies a force to the pressing sheet 242, thereby pressing the arched pressing sheet 242 flat, and the elastic force of the pressing sheet 242 preset toward the top of the elastic collar 241 is offset by the force applied by the unlocking member 2224, so that the phase shifting assembly 21 is unlocked and the phase shifting assembly 21 can move freely. In one embodiment, the unlocking platform 2225 can be an unlocking protrusion.

[0064] Further, combined with Figure 8The elastic collar 241 is provided with guiding inclined surfaces 2412 on both sides of the elastic protrusion 2411, so as to guide the unlocking member 2224 from the state of not pressing the elastic protrusion 2411 to the state of pressing the elastic protrusion 2411, and to guide the unlocking member 2224 from the state of pressing the elastic protrusion 2411 to the state of not pressing the elastic protrusion 2411. When the unlocking platform 2225 of the unlocking member 2224 is not pressed against the elastic protrusion 2411, the pressing sheet 242 returns to the original arched state, so as to press the phase shifting assembly 21 against the top of the elastic collar 241, lock the phase shifting assembly 21, and limit the movement of the phase shifting assembly 21.

[0065] Since the phase shifting components 21 are arranged in two rows on both sides of the driving screw 221, the unlocking member 2224 can act on each phase shifting component 21 of the two rows of phase shifting components 21. Figure 6 Two unlocking platforms 2225 are arranged on the unlocking member 2224 . The two unlocking platforms 2225 are respectively arranged at two ends of the unlocking member 2224 along the thickness direction of the phase shifting assembly 21 , and the two unlocking platforms 2225 are symmetrical in structure.

[0066] In one embodiment, the unlocking member 2224 is a columnar structure protruding from the linkage member 222 , and the two unlocking platforms 2225 of the unlocking member 2224 are disposed on the unlocking member 2224 of the columnar structure.

[0067] In one embodiment, in combination Figure 5 and Figure 6 The linkage member 222 is also provided with a damping structure 2226, which is used to reduce the force generated when the unlocking member 2224 contacts the locking member 24. Specifically, the damping structure 2226 is extended along the axial direction of the driving screw 221, and a damping hole is provided on the damping structure 2226. A soft pad made of a flexible material such as a rubber pad can be provided in the damping hole to reduce the force generated when the unlocking member 2224 contacts the locking member 24.

[0068] Combination Figure 1 , Figure 2 and Figure 4 , the transmission screw 221 and the transmission shaft 231 are both provided with a driving gear for independently receiving a driving torque to drive themselves to rotate. Specifically, a first driving gear 233 is sleeved on one end of the transmission shaft 231 (this end is referred to as the first end of the transmission shaft 231), and the first driving gear 233 is used to receive a driving torque to drive the transmission shaft 231 to rotate. A driven gear 224 is sleeved on the same end of the transmission screw 221 as the first end of the transmission shaft 231 (this end is referred to as the first end of the transmission screw 221), and the driven gear 224 is meshed with a second driving gear 223, and the second driving gear 223 is used to receive a driving torque to drive the transmission screw 221 to rotate.

[0069] The first driving gear 233 and the second driving gear 223 run on the same tangent plane, that is, the first driving gear 233 and the second driving gear 223 are arranged parallel to each other, and the central axis of the first driving gear 233 is the same as the central axis of the second driving gear 223, and the first driving gear 233 and the second driving gear 223 have the same specifications. The first driving gear 233 and the second driving gear 223 are arranged in parallel and do not interfere with each other's operation.

[0070] In one embodiment, a rotating shaft is provided on the first driving gear 233, and the cross section of the rotating shaft is circular; a cylindrical hole is provided on the second driving gear 223 for matching the rotating shaft, and the cross section of the cylindrical hole is circular; the rotating shaft and the cylindrical hole cooperate with each other to support the two driving gears, so that the first driving gear 233 and the second driving gear 223 are independently operated and arranged, that is, the first driving gear 233 and the second driving gear 223 do not affect each other's operation, but due to the mutual cooperation between the rotating shaft and the cylindrical hole, the first driving gear 233 and the second driving gear 223 can support each other. In another embodiment, the rotating shaft is set on the second driving gear 223, and the cylindrical hole is set on the first driving gear 233.

[0071] In one embodiment, the rotating shaft is provided on a bracket of the electronically adjustable control mechanism for supporting the frequency-selective phase-shifting module and the control mechanism, and cylindrical holes are provided on the first driving gear and the second driving gear.

[0072] The control mechanism includes a first transmission mechanism and a second transmission mechanism, wherein the first transmission mechanism is used to output a driving torque for driving the first drive gear 233 or the second drive gear 223, and the second transmission mechanism is used to adjust the output position of the driving torque of the first transmission mechanism along the same axis so that the first transmission mechanism outputs its driving torque to the first drive gear 233 or the second drive gear 223.

[0073] Combination Figure 1 , Figure 2 and Figure 4 The first transmission mechanism includes an output gear 311 and a first transmission pair for receiving an external torque to control the rotation of the output gear 311. The output gear 311 can move linearly along the same axis under the action of the second transmission mechanism, so that the output gear 311 is meshed with one of the first drive gear 233 and the second drive gear 223 at different times, and the output gear 311 rotates circumferentially to drive the first drive gear 233 or the second drive gear 223 meshed therewith.

[0074] The second transmission mechanism includes a control box 321 and a second transmission pair for receiving an external torque to control the control box 321 to run linearly along the same axis. Fig.10 and Fig.11 The second transmission pair includes a second gear pair and a rotating screw 322 driven by the gear pair. The control box 321 is provided with a screw hole 3211 which is screwed with the rotating screw 322 to form a screw mechanism. The rotating screw 322 is rotated to drive the control box 321 to move linearly along the same axis.

[0075] The control box 321 is provided with a second accommodation space 3212, and the second accommodation space 3212 is used to accommodate the output gear 311. The screw hole 3211 provided on the control box 321 passes through the second accommodation space 3212, and the second accommodation space 3212 is provided with a stud 3213 for forming the screw hole 3211. The output gear 311 is sleeved on the stud 3213 in the second accommodation space 3212, and the outer diameter of the stud 3213 is circular, so that the output gear 311 sleeved on the stud 3213 can rotate freely in the second accommodation space 3212. The second accommodation space 3212 is provided with an opening 3213 facing the first driving gear 233 or the second driving gear 223, and the outer teeth of the output gear 311 are exposed to the outside through the opening 3213, so that the output gear 311 is meshed with the first driving gear 233 or the second driving gear 223.

[0076] Combination Figure 1 , Figure 2 and Figure 4 The second gear pair of the second transmission mechanism includes a second connecting gear 323, a tower gear 324 and a second bevel gear 325. The second connecting gear 323 is sleeved on the transmission screw 221. The spur tooth portion of the tower gear 324 is meshed with the second connecting gear 323. The helical tooth portion of the tower gear 324 is meshed with the second bevel gear 325. The second bevel gear 325 is sleeved on the rotating shaft of the second motor (not shown).

[0077] When the second motor is working, the rotating shaft of the second motor drives the second bevel gear 325 to rotate, the second bevel gear 325 drives the tower gear 324 to rotate, the tower gear 324 drives the second connecting gear 323 to rotate, the second connecting gear 323 drives the rotating screw 322 to rotate, and the rotating screw 322 drives the control box 321 to move linearly along the axial direction of the rotating screw 322, so that the output gear 311 arranged in the control box 321 can be meshed with the first drive gear 233 or the second drive gear 223 at different positions.

[0078] The first transmission pair of the first transmission mechanism includes a first gear pair, a rotating shaft 312 driven by the first gear pair, and a rotating gear 313 slidably mounted on the rotating shaft 312 and driven by the rotating shaft 312. The rotating gear 313 is arranged in the second accommodating space 3212 of the control box 321. The rotating gear 313 is meshed with the output gear 311 to drive the output gear 311 to rotate circumferentially.

[0079] Specifically, combined Figure 1 , Figure 2 and Figure 4 The first gear pair includes a first connecting gear 314 and a first bevel gear 315. The first connecting gear 314 is sleeved on the rotating shaft 312. The first bevel gear 315 meshes with the first connecting gear 314. The first bevel gear 315 is sleeved on the rotating shaft of the first motor (not shown). In one embodiment, the first bevel gear 315 is sleeved on the rotating shaft of the first motor (not shown). Fig.13 The first transmission mechanism is not provided with a rotating shaft 312 and a rotating gear 313, and a gear column 316 is provided in the first transmission mechanism, and the gear column 316 is respectively meshed with the first linkage gear 314 and the output gear 311.

[0080] When the first motor is working, the rotating shaft of the first motor drives the first bevel gear 315 to rotate, the first bevel gear 315 drives the first connecting gear 314 to rotate, the first connecting gear 314 drives the rotating gear 313 to rotate via the rotating shaft 312, the rotating gear 313 drives the output gear 311 to rotate, and the output gear 311 drives the first driving gear 233 or the second driving gear 223 meshing therewith to rotate.

[0081] When the output gear 311 is meshed with the second driving gear 223, the output gear 311 drives the second driving gear 223 to rotate, and the second driving gear 223 drives the transmission screw 221 to rotate, and the transmission screw 221 drives the linkage member 222 to move linearly along the axial direction of the transmission screw 221, so that the phase-shifting gear 232 arranged in the linkage member 222 is aligned and meshed with any one of the phase-shifting components 21 in the two rows of phase-shifting components.

[0082] When the phase-shifting gear 232 is aligned with and meshed with the predetermined phase-shifting assembly 21, the output gear 311 is driven to mesh with the first driving gear 233. The output gear 311 drives the first driving gear 233 to rotate, the first driving gear 233 drives the transmission shaft 231 to rotate, the transmission shaft 231 drives the phase-shifting gear 232 disposed in the linkage member 222 to rotate circumferentially, the phase-shifting gear 232 drives the meshed phase-shifting assembly 21 to move, the phase-shifting assembly 21 drives the phase-shifting component linked thereto to move, so as to drive the phase-shifting component to perform phase shifting.

[0083] Thus, the second transmission mechanism drives the output gear 311 to mesh with one of the first drive gear 233 and the second drive gear 223, and the second transmission mechanism will not mesh with the first drive gear 233 and the second drive gear 223 at the same time. When the second transmission mechanism drives the output gear 311 to move linearly and mesh with the second drive gear 223, the output gear 311 only meshes with the second drive gear 223, but not with the first drive gear 233, so that the first drive gear 233, the transmission shaft 231, and the phase shifting gear 232 disposed on the transmission shaft 231 can rotate freely, and will not be unable to rotate freely due to the self-locking torque of the first transmission mechanism due to meshing with the output gear 311.

[0084] Specifically, because the rotating shaft of the first motor of the first transmission mechanism cannot rotate freely, each transmission component that is sequentially connected to the rotating shaft of the first motor will be affected by the self-locking force of the rotating shaft of the first motor, so that each transmission component connected to the rotating shaft of the first motor cannot rotate freely due to the self-locking force of the rotating shaft of the first motor.

[0085] In the typical embodiment of the present invention, the output gear 311 is driven by the second transmission mechanism to move linearly to mesh with one of the first drive gear 233 and the second drive gear 223. When the output gear 311 meshes with the second drive gear 223, the first drive gear 233, the transmission shaft 231 and the phase-shifting gear 232 corresponding to the phase-shifting mechanism are not in transmission connection with the first motor, so that the first drive gear 233, the transmission shaft 231 and the phase-shifting gear 232 will not be subjected to the self-locking force of the rotating shaft of the first motor, so that the first drive gear 233, the transmission shaft 231 and the phase-shifting gear 232 can rotate freely.

[0086] When the output gear 311 is driven by the first transmission mechanism to drive the second driving gear 223 to rotate, the second driving gear 223 drives the driven gear 224 to rotate, the driven gear 224 drives the transmission screw 221 to rotate, and the transmission screw 221 drives the linkage member 222 to move linearly along the axial direction of the transmission screw 221, so that the phase-shifting gear 232 disposed in the linkage member 222 is aligned and meshed with the corresponding phase-shifting assembly 21. When the phase-shifting gear 232 is aligned and meshed with the phase-shifting assembly 21, since the phase-shifting gear 232 can rotate freely in the circumferential direction, the phase-shifting gear 232 will not collide with each other during the process of meshing with the phase-shifting assembly 21. The phase-shifting gear 232 can rotate freely in the circumferential direction so that its external teeth correspond to the tooth grooves on the phase-shifting assembly 21, and the external teeth of the phase-shifting gear 232 extend into the tooth grooves of the phase-shifting assembly 21, completing the meshing of the phase-shifting gear 232 with the phase-shifting assembly 21.

[0087] However, the conventional phase-shifting gear is controlled by the motor at all times and cannot rotate freely in the circumference. When the phase-shifting gear is meshed with the phase-shifting assembly, if the outer teeth of the phase-shifting gear collide with the outer teeth of the phase-shifting assembly, the phase-shifting gear cannot rotate freely in the circumference, making it difficult for the outer teeth of the phase-shifting gear to rotate and extend into the tooth groove of the phase-shifting assembly to complete the alignment meshing of the phase-shifting gear and the phase-shifting assembly. Moreover, due to the mutual collision between the outer teeth of the phase-shifting gear and the outer teeth of the phase-shifting assembly, when the phase-shifting gear is driven by the output gear to move linearly, the phase-shifting gear is easy to knock the phase-shifting assembly away from its original position, thereby causing the phase-shifting assembly to fail. Furthermore, when the phase-shifting gear is stuck or collides with each phase-shifting assembly and knocks the phase-shifting assembly away from its original position, the arrangement position of all the phase-shifting assemblies of the entire electric adjustment control device will change, thereby causing the electric adjustment control device to fail and fail to complete the phase shifting of the multi-frequency antenna.

[0088] When the output gear 311 of the electric control device of the present invention drives the phase-shifting gear 232 to move linearly through the frequency selection mechanism, the phase-shifting mechanism is not constrained by the output gear 311, so that the phase-shifting gear of the phase-shifting mechanism can rotate freely in the circumferential direction and is not constrained by the self-locking force of the motor, so that when the output gear 311 drives the phase-shifting gear 232 to move linearly through the frequency selection mechanism and engages with any phase-shifting component 21, the phase-shifting gear 232 will not get stuck with the phase-shifting component 21 or push the phase-shifting component 21 to deviate from the predetermined position.

[0089] In one embodiment, the second driving gear 223 is directly sleeved on the transmission screw 221, without outputting the torque obtained by the second driving gear 223 to the transmission screw 221 through the driven gear 224. The second driving gear 223 is arranged on a cotangent plane with the first driving gear 233, so that the output gear 311 is meshed with one of the first driving gear 233 and the second driving gear 223 at different times.

[0090] Specifically, the specification size of the second driving gear 223 is larger than the specification size of the first driving gear 233, that is, the radial size of the second driving gear 223 is larger than the radial size of the first driving gear 233, and the central axis of the first driving gear 233 does not coincide with the central axis of the second driving gear 223, but the first driving gear 233 and the second driving gear 223 are arranged in parallel and on the same tangent surface, so that the output gear 311 can mesh with one of the first driving gear 233 and the second driving gear 223 at different times.

[0091] In an exemplary embodiment of the present invention, in combination with Figure 1 , Figure 2 , Figure 3 and Figure 4The electric adjustment control device includes at least two frequency-selective phase-shifting modules 20, which are respectively arranged on both sides of the control mechanism along the axial direction of the rotating screw 322. The two frequency-selective phase-shifting modules 20 are respectively called a first frequency-selective phase-shifting module 201 and a second phase-shifting module, wherein the first frequency-selective phase-shifting module 201 is arranged on the left side of the control mechanism, and the second frequency-selective phase-shifting module 202 is arranged on the right side of the control mechanism, and the first frequency-selective phase-shifting module 201 and the second frequency-selective phase-shifting module 202 are symmetrical structures with respect to the control mechanism.

[0092] Specifically, the first drive gear 233 and the second drive gear 223 of the first frequency-selective phase-shifting module 201 are close to the left end of the control mechanism, and the first drive gear 233 and the second drive gear 223 of the second frequency-selective phase-shifting module 202 are close to the right end of the control mechanism, so that the output gear 311 of the control mechanism can move linearly between the two drive gears of the first frequency-selective phase-shifting module 201 and the two drive gears of the second frequency-selective phase-shifting module 202, so that the output gear 311 can be meshed with any one of the four drive gears, thereby driving the meshed drive gear to rotate circumferentially. Thus, the control mechanism can simultaneously control the first frequency-selective phase-shifting module 201 and the second frequency-selective phase-shifting module 202, increase the number of phase-shifting components 21 that can be controlled by the electric control device, and because the control mechanism is arranged between the first frequency-selective phase-shifting module 201 and the second frequency-selective phase-shifting module 202, the distance between the output gear 311 and each phase-shifting component 21 can be shortened, so as to mesh with the corresponding drive gear, thereby implementing phase shifting.

[0093] In one embodiment, the control mechanism is further provided with a pressure member 33, which is arranged between the first frequency-selective phase-shifting module and the second frequency-selective phase-shifting module 202. When the control mechanism is linked with one of the frequency-selective phase-shifting modules 20, the pressure member 33 is used to limit the rotation of the second driving gear 223 of the other frequency-selective phase-shifting module 20, so that the second driving gear 223 cannot be rotated by external vibration and other factors, thereby driving the corresponding transmission screw 221, linkage member 222 and phase-shifting gear 232 to move linearly.

[0094] Combination Fig.12The pressing member 33 includes two spring-pressing pieces 331 and a bottom plate 332. The spring-pressing piece 331 is preset with elastic force so that the spring-pressing piece 331 is tilted relative to the bottom plate 332. The spring-pressing piece 331 is tilted to engage with the tooth groove of the second driving gear 223. Specifically, the two spring-pressing pieces 331 of the pressing member 33 respectively correspond to the second driving gear 223 of the first frequency-selective phase-shifting module 201 and the second driving gear 223 of the second frequency-selective phase-shifting module 202. The spring-pressing piece corresponding to the second driving gear 223 of the first frequency-selective phase-shifting module 201 is called the first spring-pressing piece 3311, and the spring-pressing piece corresponding to the second driving gear 223 of the second frequency-selective phase-shifting module 202 is called the second spring-pressing piece 3312.

[0095] When the rotating screw 322 of the control mechanism rotates to drive the control box 321 to move linearly, so that the output gear 311 arranged in the control box 321 is engaged with the second driving gear 223 of the first frequency-selective phase-shifting module 201, since the first spring-pressing sheet 3311 is engaged with the second driving gear 223 of the first frequency-selective phase-shifting module 201, the control box 321 will apply pressure to the first spring-pressing sheet 3311 toward the bottom plate 332 of the pressing member 33, thereby pressing the first spring-pressing sheet 3311 off the second driving gear 223 of the first frequency-selective phase-shifting module 201, so that the output gear 311 is engaged and drives the second driving gear 223 of the first frequency-selective phase-shifting module 201.

[0096] During the process of the output gear 311 being meshed with the second driving gear 223 of the second frequency-selective phase-shifting module 202, the relationship between the control box 321 and the second spring-pressing plate 3312 can refer to the relationship between the control box 321 and the first spring-pressing plate 3311 during the process of the output gear 311 being meshed with the second driving gear 223 of the first frequency-selective phase-shifting module 201. In order to save space, they will not be repeated here.

[0097] The present invention also provides a multi-frequency antenna, which includes a plurality of phase shifting components corresponding to a plurality of frequency bands, and each of the phase shifting components has a corresponding phase shifting component in the electric adjustment control device and is arranged in linkage therewith.

[0098] To sum up, the electronically adjustable control device of the present invention can make the output gear mesh with each driving gear individually through its control mechanism, so that the output gear can drive the driving gear meshed with it individually; and when the phase-shifting gear of the frequency-selective phase-shifting module is not meshed with the output gear, the phase-shifting gear of the phase-shifting mechanism can rotate freely, so that when the phase-shifting gear is driven by the linkage part of the frequency-selective mechanism to mesh with each phase-shifting component, it will not collide with or get stuck with the phase-shifting component and knock the phase-shifting component away from the predetermined position.

[0099] The above description is only a preferred embodiment of the present invention and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present invention is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the above features are replaced with the technical features with similar functions invented in the present invention (but not limited to) to form a technical solution.

[0100] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. An electric control device, comprising a control mechanism and a plurality of frequency-selective phase-shifting modules, wherein the frequency-selective phase-shifting modules include phase-shifting components corresponding to a plurality of frequency bands, a frequency-selecting mechanism for selecting a phase-shifting component of one frequency band under the control of a driving torque, and a phase-shifting mechanism for performing phase-shifting control on the selected phase-shifting component under the control of a driving torque, Features: The frequency selection mechanism and phase shifting mechanism of each frequency selection and phase shifting module are provided with a driving gear for independently receiving the driving torque, and the control mechanism includes a first transmission mechanism and a second transmission mechanism, the first transmission mechanism is used to output the driving torque, and the second transmission mechanism is used to adjust the output position of the driving torque of the first transmission mechanism along the same axis, so as to transmit the driving torque to the driving gear of the frequency selection mechanism or the phase shifting mechanism of one of the frequency selection and phase shifting modules at the output position; The frequency selection mechanism includes a transmission screw and a linkage member, wherein the linkage member is penetrated by a screw hole which is threadedly arranged with the transmission screw; the phase shifting mechanism includes a transmission shaft and a phase shifting gear, wherein the phase shifting gear is slidingly sleeved on the transmission shaft and is freely rotated synchronously with the transmission shaft; the transmission screw is arranged in parallel with the transmission shaft, and the phase shifting gear is pivotally arranged in the accommodation space provided by the linkage member; the transmission screw and the transmission shaft are both provided with a driving gear for independently receiving the driving torque to drive their own rotation, and each driving gear runs on the same tangent plane; The frequency selection mechanism and the phase shifting mechanism operate independently of each other, and the driving torque is selectively linked with the driving gear of the frequency selection mechanism or the driving gear of the phase shifting mechanism; when the driving torque is linked with the driving gear corresponding to the frequency selection mechanism, the linkage part is driven to drive the freely rotating phase shifting gear to engage with any phase shifting component.

2. The electric control device according to claim 1, It is characterized in that In the same frequency-selective phase-shifting module, when the driving gear in its frequency-selective mechanism receives the driving torque, each phase-shifting component is in a locked state, and the position of the phase-shifting gear of its phase-shifting mechanism is changed until one of the phase-shifting components is fully engaged to release the locked state of the phase-shifting component; When the driving gear in its phase shifting mechanism receives the driving torque to perform phase shifting on the meshed phase shifting component, its frequency selection mechanism is in a relatively static state.

3. The electric control device according to claim 1, It is characterized in that The first transmission mechanism includes an output gear and a transmission pair for receiving external torque to control the rotation of the output gear and output the driving torque. The second transmission mechanism includes a control box and a transmission pair for receiving external torque to control the control box to operate along the same axis. The output gear is pivotally arranged in the accommodating space provided by the control box so as to shift along the same axis as the control box operates, thereby changing the output position of its driving torque.

4. The electric control device according to claim 3, It is characterized in that The transmission pair of the first transmission mechanism includes a gear pair, a rotating shaft driven by the gear pair, and a rotating gear slidably sleeved on the rotating shaft and driven to rotate by the rotating shaft. The rotating gear is pivotally arranged in the accommodating space provided by the control box and meshes with the output gear.

5. The electric control device according to claim 4, It is characterized in that The transmission pair of the second transmission mechanism includes a gear pair, a rotating screw driven by the gear pair, and a screw hole formed in the control box and screwed with the rotating screw; the output gear of the first transmission mechanism can be freely rotatably sleeved on the stud forming the screw hole in the accommodating space, and the rotating screw is arranged parallel to the rotating axis of the first transmission mechanism.

6. The electric control device according to claim 1, It is characterized in that All the driving gears of the multiple frequency-selective phase-shifting modules are arranged side by side on a coaxial line, and the second transmission mechanism is driven to adjust the driving torque output position of the output gear of the first transmission mechanism along the same axis, so that it engages with any one of the driving gears in the multiple frequency-selective phase-shifting modules at the output position and outputs the driving torque to the driving gear.

7. The electric control device according to claim 6, It is characterized in that In each frequency-selective phase-shifting module, two drive gears with the same end and the same specification are arranged side by side on a coaxial line, so that the drive torque is switched between the two drive gears and linked to one of the drive gears.

8. The electric control device according to claim 1, It is characterized in that All the driving gears of the multiple frequency-selective phase-shifting modules are arranged on a common tangent plane, and the second transmission mechanism is driven to adjust the driving torque output position of the output gear of the first transmission mechanism along the same axis, so that it engages with any one of the driving gears of the multiple frequency-selective phase-shifting modules at the output position and outputs the driving torque to the driving gear.

9. The electric control device according to claim 8, It is characterized in that In each frequency-selective phase-shifting module, two driving gears are fixed on different axes respectively, a radial dimension of one driving gear is larger than a radial dimension of the other driving gear, and both driving gears have the same tangent surface.

10. The electric control device according to claim 1, It is characterized in that The linkage member is fixed with an unlocking member, and the phase-shifting assembly is provided with a locking mechanism. The unlocking member is configured so that when it runs to the position where the phase-shifting gear is fully engaged with one of the phase-shifting assemblies, the unlocking member suppresses the locking mechanism to unlock the phase-shifting assembly, so that the phase-shifting assembly is in a freely movable state; otherwise, the unlocking member releases the locking mechanism to lock the phase-shifting assembly, so that the phase-shifting assembly is in an immovable state.

11. The electric control device according to claim 1, It is characterized in that The frequency selection mechanism is fixedly provided with a driven gear at one end of its transmission screw, and the driven gear is meshed with the driving gear of the frequency selection mechanism. The phase shifting mechanism is fixedly provided with its driving gear at one end of its transmission shaft. The driving gear of the frequency selection mechanism is placed at a position coaxially and side by side with the driving gear of the phase shifting mechanism, and the two driving gears are arranged to operate independently of each other, and the driving torque is selectively linked to the two driving gears.

12. The electric control device according to any one of claims 1 to 11, It is characterized in that The control mechanism is centrally arranged, and a plurality of frequency-selective phase-shifting modules are arranged on both sides of the control mechanism.

13. The electric control device according to claim 1, It is characterized in that The control mechanism is also provided with a pressure piece, which is provided with two spring-pressure plates corresponding to the driving gears of the frequency selection mechanisms of the two frequency selection and phase shifting modules on the left and right sides of the control mechanism. The spring-pressure plates are engaged with the tooth grooves of the driving gears. When the second transmission mechanism is linked with one of the frequency selection and phase shifting modules, the linkage piece presses the spring-pressure plates corresponding to the linked frequency selection and phase shifting modules off the driving gears.

14. A multi-frequency antenna, comprising a plurality of phase shifting components corresponding to a plurality of frequency bands, It is characterized in that It comprises the electrically adjustable control device as claimed in any one of claims 1 to 13, and each of the phase shifting components has a corresponding phase shifting component in the electrically adjustable control device and is arranged in linkage therewith.

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