Electric downtilt adjustment device, locking module and electrically steerable antenna thereof

Abstract

The application belongs to the technical field of antennas and provides an electric down tilt angle adjusting device, a locking module and an electrically adjustable antenna. The electric down tilt angle adjusting device can be applied to the electrically adjustable antenna and is used for adjusting the electric down tilt angle of the electrically adjustable antenna. The electric down tilt angle adjusting device comprises a gear shifting module for selecting a corresponding transmission module to transfer kinetic energy, a transmission module for connecting a phase shifter of the electrically adjustable antenna, a driving module for outputting kinetic energy and a locking module for avoiding the electric down tilt angle of the antenna from being offset. The driving module only needs to use two motors to drive the gear shifting module and the corresponding transmission module, so the cost is low. The locking module only locks the transmission module when the gear shifting nut is located at the starting point of the stroke. When the gear shifting nut is away from the starting point of the stroke, the locking effect disappears, so no resistance is generated to the kinetic energy transmission of the gear shifting module to the transmission module, and the transmission efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of antenna, in particular to an electric down tilt angle adjusting device, a locking module and an electrically adjustable antenna. BACKGROUND

[0002] In recent years, the communication industry in China is booming, and China has become a mobile communication power. At the same time, multiple communication systems of the three major operators coexist. In order to meet the coverage needs, the number of base stations is increasing with time, and the distribution and coverage of the cell will become more and more complex.

[0003] Due to the use of more and more systems and frequency bands, the base station density is getting larger and larger, and the coverage within the cell and the interference between cells are becoming increasingly prominent. In order to achieve good coverage, researchers change the beam tilt angle of the electrically adjustable antenna through the phase shifter. The beam tilt angle of the electrically adjustable antenna can be remotely changed, not only saving manpower and material resources, but also having better coverage effect than the mechanical down tilt antenna, so it plays an important role in network optimization. However, with the continuous deepening of 5G construction, site and sky resources are becoming increasingly scarce, and operators' demand for multi-system and multi-frequency band antennas is increasing. The electric down tilt angle of each frequency band of the multi-frequency antenna needs to be remotely and independently adjusted. The current adjustment method is to adjust each frequency band by using one motor respectively. Due to high cost, it has become increasingly uncompetitive.

[0004] In summary, the prior art has obvious inconvenience and defects in actual use, so it is necessary to improve. SUMMARY

[0005] In view of the above defects, the purpose of the present application is to provide an electric down tilt angle adjusting device, a locking module and an electrically adjustable antenna. The independent electric adjustment of multiple frequency bands of the electrically adjustable antenna can be realized by two motors, and the cost is reduced. The locking mode of the locking module not only avoids the deviation of the electric down tilt angle in the long-term high-altitude vibration environment, but also does not generate resistance to the transmission process of other components, and the transmission efficiency is high.

[0006] In order to achieve the above purpose, the present application provides an electric down tilt angle adjusting device, comprising:

[0007] A gear shifting module comprising a gear shifting screw and a gear shifting nut screwed with the gear shifting screw; the gear shifting nut is provided with a first shaft sleeve and a second shaft sleeve; a drive gear is rotatably arranged between the first shaft sleeve and the second shaft sleeve;

[0008] A transmission module comprising a transmission screw, a transmission nut screwed with the transmission screw, and a driven gear arranged on the transmission screw; the driven gear is coaxially connected with the transmission screw;

[0009] The transmission modules are provided in plurality, and each of the transmission modules is distributed on a circumference with the driving gear as the center;

[0010] The driven gears on each of the transmission screws are arranged at intervals in the axial direction of the transmission screws; and the driving gear is engaged with the corresponding driven gear under the drive of the shift nut.

[0011] The driving module comprises a first driving motor in transmission connection with the shift screw and a second driving motor in transmission connection with the driving gear.

[0012] The locking module comprises a plurality of locking teeth distributed on the end face of the second shaft sleeve, a plurality of first locking gears and a plurality of second locking gears.

[0013] At least two protruding teeth are arranged on the end face of each of the first locking gears; when the shift nut is located at the starting point of the stroke, each of the locking teeth is located between the two protruding teeth of the corresponding first locking gear.

[0014] Each of the second locking gears is arranged on each of the transmission screws, and the second locking gear is coaxially connected with the transmission screw; each of the second locking gears is engaged with the corresponding first locking gear.

[0015] According to the electric downward inclination angle adjusting device, the first driving motor is in transmission connection with the shift screw through a first driving assembly; the first driving assembly comprises a first shaft coupling, a first driving shaft, a first gear, a second gear and an idler gear; the first shaft coupling is coaxially connected with the first driving motor and is in butt joint with the first driving shaft; the first gear is coaxially connected with the first driving shaft; the second gear is coaxially connected with the shift screw; and the idler gear is engaged with the first gear and the second gear.

[0016] The second driving motor is in transmission connection with the driving gear through a second driving assembly; the second driving assembly comprises a second shaft coupling and a second driving shaft; the second shaft coupling is coaxially connected with the second driving motor and is in butt joint with the second driving shaft; the outer surface of the second driving shaft is provided with a key, the inner side of the driving gear is provided with a key groove matched with the key, and the second driving shaft is coaxially connected with the driving gear.

[0017] According to the electric downward inclination angle adjusting device, the locking teeth and the protruding teeth are all arranged as sharp teeth.

[0018] The electric down-tilt angle adjusting device further comprises a support module, which comprises a mounting base plate and a first support frame, a second support frame, a third support frame, a fourth support frame, a fifth support frame and two guide rails installed on the mounting base plate in sequence along the length direction of the mounting base plate through screws;

[0019] The shift screw is installed on the second support frame, the fourth support frame and the fifth support frame;

[0020] The first drive shaft is installed on the fourth support frame and the fifth support frame;

[0021] The transmission screw is installed on the first support frame, the second support frame, the third support frame and the fourth support frame;

[0022] The second drive shaft is installed on the second support frame, the fourth support frame and the fifth support frame;

[0023] The first locking gear is installed on the second support frame;

[0024] The idler gear is installed on the fifth support frame;

[0025] The distance between the two guide rails is adapted to the width of the drive module; and the drive module is slidably connected between the two guide rails.

[0026] According to the electric down-tilt angle adjusting device, the shift module further comprises a first stop ring for defining the starting point of the stroke of the shift nut, which is coaxially connected with the shift screw through a first set screw.

[0027] According to the electric down-tilt angle adjusting device, the transmission module further comprises a second stop ring for defining the ending point of the stroke of the transmission nut, a second set screw, a guide rod, a limiting ring for axially limiting the transmission screw and a self-tapping screw;

[0028] The second stop ring is coaxially connected with the transmission screw through the second set screw;

[0029] The guide rod is arranged in parallel with the axis of the transmission screw, and the transmission nut is slidably connected with the guide rod;

[0030] The limiting ring is arranged at the end of the transmission screw, and the limiting ring is coaxially connected with the transmission screw through the self-tapping screw;

[0031] The transmission module is provided with 2-6.

[0032] According to the electric down tilt angle adjusting device, the transmission module further comprises a baffle for axially limiting the guide rod, the baffle is arranged at the end of the guide rod, and a plurality of clamping springs for axially limiting the driven gear and the second locking gear are arranged, at least one end of the driven gear is provided with the clamping spring, and one end of the second locking gear is provided with the clamping spring.

[0033] According to the electric down tilt angle adjusting device, the driving module further comprises a male connector for connecting a power supply and a female connector for cascading output, and the male connector is electrically connected with the first driving motor and the second driving motor.

[0034] In order to achieve the above-mentioned purpose, the application further provides a locking module applied to the electric down tilt angle adjusting device, comprising a plurality of locking teeth arranged on the end face of the second shaft sleeve protruding on the shift nut of the electric down tilt angle adjusting device, a plurality of first locking gears and a plurality of second locking gears.

[0035] At least two protruding teeth are arranged on the end face of each first locking gear, when the shift nut is located at the starting point of the stroke, each locking tooth is located between the two protruding teeth of the corresponding first locking gear.

[0036] Each second locking gear is arranged on the transmission screw rod of each electric down tilt angle adjusting device, and the second locking gear is coaxially connected with the transmission screw rod, and each second locking gear is engaged with the corresponding first locking gear.

[0037] In order to achieve the above-mentioned purpose, the application further provides an electrically adjustable antenna comprising the electric down tilt angle adjusting device, the electrically adjustable antenna further comprises a phase shifter, an outer cover, a front end cover and a rear end cover.

[0038] The phase shifter is connected with the transmission nut of the electric down tilt angle adjusting device.

[0039] The outer cover, the front end cover and the rear end cover form a containing space, the electric down tilt angle adjusting device is installed in the containing space, and the rear end cover is provided with an opening, and the end of the driving module of the electric down tilt angle adjusting device extends out of the opening.

[0040] The electric downtilt angle adjusting device of the application can be applied to electrically adjustable antennas and used for adjusting the electric downtilt angle of the electrically adjustable antennas. The electric downtilt angle adjusting device comprises a gear shifting module for selecting a corresponding transmission module to transmit kinetic energy, a transmission module for connecting a phase shifter of the electrically adjustable antenna, a driving module for outputting kinetic energy, and a locking module for avoiding the generation of a deviation in the electric downtilt angle of the antenna. The driving module only needs to use two motors to drive the gear shifting module and the corresponding transmission module, so the cost is low, and the locking module only locks the transmission module when the gear shifting nut is at the starting point of the stroke, and the locking effect disappears when the gear shifting nut leaves the starting point of the stroke, so there is no resistance to the transmission of kinetic energy of the gear shifting module to the transmission module, and the transmission efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a structural schematic diagram of an electrically adjustable antenna of an embodiment of the application;

[0042] Figure 2 is a structural schematic diagram of an electric downtilt angle adjusting device of an embodiment of the application;

[0043] Figure 3 is a sectional view of a plurality of transmission modules of the electric downtilt angle adjusting device of an embodiment of the application connected to a driving gear;

[0044] Figure 4 is a structural schematic diagram of the electric downtilt angle adjusting device of an embodiment of the application;

[0045] Figure 5 is a structural schematic diagram of a driving module of the electric downtilt angle adjusting device of an embodiment of the application;

[0046] Figure 6 is a structural schematic diagram of a gear shifting module of the electric downtilt angle adjusting device of an embodiment of the application;

[0047] Figure 7 is a structural schematic diagram of the gear shifting module of the electric downtilt angle adjusting device of an embodiment of the application;

[0048] Figure 8 is a structural schematic diagram of a transmission module of the electric downtilt angle adjusting device of an embodiment of the application;

[0049] Figure 9 is a structural schematic diagram of a plurality of transmission modules of the electric downtilt angle adjusting device of an embodiment of the application connected to a driving gear;

[0050] Figure 10 is a local structural schematic diagram of a gear shifting nut of the electric downtilt angle adjusting device of an embodiment of the application at the starting point of the stroke;

[0051] Figure 11is a structural schematic view of a locking module of an electric down tilt angle adjusting device according to an embodiment of the present application;

[0052] Figure 12 is a structural schematic view of a first locking gear of an electric down tilt angle adjusting device according to an embodiment of the present application. DETAILED DESCRIPTION

[0053] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0054] It should be noted that the use of "one embodiment", "an embodiment", "example embodiment", etc. in the specification refers to the described embodiment including a particular feature, structure or characteristic, but not every embodiment necessarily includes the particular feature, structure or characteristic. In addition, such expressions do not refer to the same embodiment. Further, when a particular feature, structure or characteristic is described in connection with an embodiment, it is indicated that such a feature, structure or characteristic is incorporated into other embodiments within the knowledge of those skilled in the art, whether or not it is explicitly described.

[0055] In addition, some terms are used in the specification and subsequent claims to refer to specific components or parts, and those skilled in the art should understand that manufacturers can use different names or terms to refer to the same component or part. The specification and subsequent claims do not distinguish components or parts by name, but by functional differences. Throughout the specification and subsequent claims, "including" and "containing" are open terms, and should be interpreted as "including but not limited to". In addition, the term "connected" includes any direct and indirect electrical connection means. Indirect electrical connection means includes connection through other devices.

[0056] Referring to Figures 2-12 , a structural schematic view of an electric down tilt angle adjusting device 1000 according to a first embodiment of the present application is shown; the electric down tilt angle adjusting device 1000 includes:

[0057] The gear shifting module 100 includes a gear shifting screw 41 and a gear shifting nut 42 screwed with the gear shifting screw 41; the gear shifting nut 42 is provided with a first shaft sleeve 42a and a second shaft sleeve 42b protruding therefrom; a drive gear 43 is rotatably arranged between the first shaft sleeve 42a and the second shaft sleeve 42b;

[0058] The transmission module 200 comprises a transmission screw 51, a transmission nut 52 screwed with the transmission screw 51, and a driven gear 6 arranged on the transmission screw 51; the driven gear 6 is coaxially connected with the transmission screw 51;

[0059] The transmission module 200 is provided in plurality, and each transmission module 200 is distributed on a circumference with the drive gear 43 as the center (see Figure 3 );

[0060] The driven gears 6 on each transmission screw 51 are arranged in interval along the axial direction of the transmission screw 51; the drive gear 43 is engaged with the corresponding driven gear 6 under the drive of the shift nut 42;

[0061] The drive module 300 comprises a first drive motor 20 in transmission connection with the shift screw 41, and a second drive motor 21 in transmission connection with the drive gear 43;

[0062] The locking module 400 comprises a plurality of locking teeth 7 distributed on the end face of the second shaft sleeve 42b, a plurality of first locking gears 8, and a plurality of second locking gears 9;

[0063] At least two protruding teeth 8a are arranged on the end face of each first locking gear 8; when the shift nut 42 is located at the starting point of the stroke, each locking tooth 7 is located between the two protruding teeth 8a of the corresponding first locking gear 8;

[0064] Each second locking gear 9 is arranged on each transmission screw 51, and the second locking gear 9 is coaxially connected with the transmission screw 51; each second locking gear 9 is engaged with the corresponding first locking gear 8.

[0065] In this embodiment, the electric downtilt angle adjusting device 1000 is applied to the electrically adjustable antenna 2000, and can adjust the electric downtilt angle of each frequency band of the electrically adjustable antenna 2000. A plurality of phase shifters 58 are arranged in the electrically adjustable antenna 2000 to adjust the electric downtilt angle of each frequency band. The electric downtilt angle adjusting device 1000 is provided with a plurality of transmission modules 200, and optionally, 2-6 transmission modules 200. The transmission nut 52 of each transmission module 200 is connected with a phase shifter 58 of the electrically adjustable antenna 2000. When the rotating drive gear 43 is engaged with the driven gear 6 of the corresponding transmission module 200, the driven gear 6 obtaining kinetic energy drives the transmission screw 51 of the transmission module 200 to rotate, and drives the transmission nut 52 screwed with the transmission screw 51 to move linearly, thereby realizing the adjustment of the electric downtilt angle of the corresponding frequency band of the electrically adjustable antenna 2000. See Figure 9 and Figure 10When the electrically adjustable antenna 2000 needs to adjust the electrically adjustable angle, the shift nut 42 of the shift module 100 drives the driving gear 43 to move a corresponding stroke to mesh with the driven gear 6 of the corresponding transmission module 200 to transmit power. Thus, the shift module 100 can select the corresponding transmission module 200 to transmit power, and the electrically adjustable angle of each frequency band can be adjusted without setting a driving motor under each transmission module 200. The first shaft sleeve 42a and the second shaft sleeve 42b provided on the shift nut 42 can axially limit the driving gear 43. In addition, the electrically adjustable antenna 2000 is in a high-altitude vibration environment for a long time, and the antenna electrically adjustable angle is easy to deviate. Thus, the locking module 400 can be provided to lock and prevent the electrically adjustable angle from deviating. The plurality of locking teeth 7 of the locking module 400 are provided on the second shaft sleeve 42b of the shift nut 42, each first locking gear 8 corresponds to a locking tooth 7, and the second locking gear 9 is provided on the transmission screw 51 and meshes with the corresponding first locking gear 8. The axis of the first locking gear 8 is parallel to the axis of the shift nut 42, and the convex teeth 8a are provided on the end surface of the first locking gear 8 close to the shift nut 42. Referring to Figure 10 When the shift nut 42 is at the starting point of the stroke (at this time, the electrically adjustable angle does not need to be adjusted, and the shift nut 42 is away from the starting point of the stroke when the electrically adjustable angle needs to be adjusted), the locking tooth 7 is located between the two convex teeth 8a of the first locking gear 8, the locking tooth 7 blocks the convex tooth 8a, the first locking gear 8 is locked, the second locking gear 9 is locked, the transmission screw 51 and the transmission nut 52 are locked, and the electrically adjustable angle is stable. When the electrically adjustable angle needs to be adjusted, the shift nut 42 is away from the starting point of the stroke, the locking tooth 7 is away from the convex tooth 8a, the first locking gear 8 is unlocked, and the transmission screw 51 can be driven at this time and the locking module 400 does not cause resistance to the rotational movement of the transmission screw 51.

[0066] Referring to Figure 2 , Figure 4 and Figure 7As an optional embodiment, the first driving motor 20 is in transmission connection with the shift screw rod 41 through a first driving assembly; the first driving assembly comprises a first coupling 22, a first driving shaft 1, a first gear 2, a second gear 4 and an idler gear 3; the first coupling 22 is coaxially connected with the first driving motor 20 and is in butt joint with the first driving shaft 1; the first gear 2 is coaxially connected with the first driving shaft 1; the second gear 4 is coaxially connected with the shift screw rod 41; the idler gear 3 is in mesh with the first gear 2 and the second gear 4; although the first driving motor 20 can also be directly connected with the shift screw rod 41 through the first coupling 22 and the first driving shaft 1, the transmission through the plurality of gears can adjust the installation position of the first driving motor 20 as required.

[0067] The second driving motor 21 is in transmission connection with the driving gear 43 through a second driving assembly; the second driving assembly comprises a second coupling 23 and a second driving shaft 5; the second coupling 23 is coaxially connected with the second driving motor 21 and is in butt joint with the second driving shaft 5; the outer surface of the second driving shaft 5 is provided with a key 5a, the inner side of the driving gear 43 is provided with a key groove 43a matched with the key 5a, and the second driving shaft 5 is coaxially connected with the driving gear 43. The key 5a on the second driving shaft 5 cooperates with the key groove 43a on the driving gear 43, which can not only make the second driving shaft 5 drive the driving gear 43 to rotate, but also make the driving gear 43 axially slide on the second driving shaft 5.

[0068] Referring to Figure 6 and Figure 12 As an optional embodiment, the locking teeth 7 and the convex teeth 8a are all provided as sharp teeth.

[0069] In this embodiment, when the locking teeth 7 and the convex teeth 8a are all provided as sharp teeth, it is convenient to guide the locking teeth 7 into the two convex teeth 8a. Optionally, the sharp teeth can be provided as a triangle in the longitudinal section; optionally, the number of the convex teeth 8a on each first locking gear 8 is provided as 3.

[0070] Referring to Figure 4 As an optional embodiment, the electric downward inclination angle adjusting device 1000 further comprises a support module, which comprises a mounting bottom plate 16 and a first support frame 10, a second support frame 11, a third support frame 12, a fourth support frame 13, a fifth support frame 14 and two guide rails 17 which are sequentially mounted on the mounting bottom plate 16 along the length direction of the mounting bottom plate 16 through screws 18;

[0071] The shift screw rod 41 is mounted on the second support frame 11, the fourth support frame 13 and the fifth support frame 14;

[0072] The first driving shaft 1 is mounted on the fourth support frame 13 and the fifth support frame 14;

[0073] The transmission screw 51 is installed on the first support frame 10, the second support frame 11, the third support frame 12 and the fourth support frame 13;

[0074] The second driving shaft 5 is installed on the second support frame 11, the fourth support frame 13 and the fifth support frame 14;

[0075] The first locking gear 8 is installed on the second support frame 11;

[0076] The idler gear 3 is installed on the fifth support frame 14;

[0077] The two guide rails 17 are arranged in parallel, and the distance between the two guide rails 17 is adapted to the width of the driving module 300; the driving module 300 is slidably connected between the two guide rails 17.

[0078] Referring to Figure 6 and Figure 7 , as an optional embodiment, the gear shifting module 100 further comprises a first stop ring 44 for limiting the starting point of the stroke of the gear shifting nut 42, which is coaxially connected with the gear shifting screw 41 through a first set screw 45. When the gear shifting nut 42 moves to the first stop ring 44, it is blocked and cannot continue to move forward.

[0079] Referring to Figure 8 and Figure 9 , as an optional embodiment, the transmission module 200 further comprises a second stop ring 54 for limiting the end point of the stroke of the transmission nut 52, a second set screw 55, a guide rod 53, a limiting ring 56 for axially limiting the transmission screw 51, and a self-tapping screw 57;

[0080] The second stop ring 54 is coaxially connected with the transmission screw 51 through the second set screw 55;

[0081] The guide rod 53 is arranged in parallel with the axis of the transmission screw 51, and the transmission nut 52 is slidably connected with the guide rod 53; the guide rod 53 is at the same height as the transmission screw 51;

[0082] The limiting ring 56 is arranged at the end of the transmission screw 51, and the limiting ring 56 is coaxially connected with the transmission screw 51 through the self-tapping screw 57. The limiting ring 56 can prevent the transmission screw 51 from moving axially.

[0083] Referring to Figure 4 , as an optional embodiment, the transmission module 200 further comprises a baffle 15 for axially limiting the guide rod 53, which is arranged at the end of the guide rod 53; and a plurality of snap springs 19 for axially limiting the driven gear 6 and the second locking gear 9; at least one end of the driven gear 6 is provided with a snap spring 19, and one end of the second locking gear 9 is provided with a snap spring 19.

[0084] Referring toFigure 5 As an optional embodiment, the driving module 300 further comprises a male connector 24 for connecting a power supply and a female connector 25 for cascading output; the male connector 24 is electrically connected with the first driving motor 20 and the second driving motor 21. The male connector 24 can also be used for receiving a control signal of a mobile communication base station, so as to control the operation of the first driving motor 20 and the second driving motor 21.

[0085] Referring to Figure 11 and Figure 12 , the second embodiment of the present application further provides a locking module 400 applied to any of the electric downtilt angle adjusting devices 1000, comprising a plurality of locking teeth 7 distributed on the end face of the second shaft sleeve 42b protrudingly arranged on the shift nut 42 of the electric downtilt angle adjusting device 1000, a plurality of first locking gears 8 and a plurality of second locking gears 9.

[0086] The end face of each first locking gear 8 is provided with at least two protruding teeth 8a; when the shift nut 42 is located at the starting point of the stroke, each locking tooth 7 is located between the two protruding teeth 8a of the corresponding first locking gear 8.

[0087] Each second locking gear 9 is arranged on the drive screw 51 of each electric downtilt angle adjusting device 1000, and the second locking gear 9 is coaxially connected with the drive screw 51; each second locking gear 9 is engaged with the corresponding first locking gear 8.

[0088] It should be noted that the locking module 400 provided by the embodiment of the present application has the same specific implementation and technical effects as the foregoing embodiment, and for brief description, the unmentioned part can refer to the corresponding content in the foregoing embodiment.

[0089] Referring to Figure 1 , the third embodiment of the present application further provides an electrically adjustable antenna 2000 comprising any of the electric downtilt angle adjusting devices 1000, and the electrically adjustable antenna 2000 further comprises a phase shifter 58, an outer cover 27, a front end cover 28 and a rear end cover 29.

[0090] The phase shifter 58 is connected with the drive nut 52 of the electric downtilt angle adjusting device 1000.

[0091] The outer cover 27, the front end cover 28 and the rear end cover 29 form a containing space, and the electric downtilt angle adjusting device 1000 is installed in the containing space; and the rear end cover 29 is provided with an opening, and the end of the driving module 300 of the electric downtilt angle adjusting device 1000 extends out of the opening.

[0092] In this embodiment, the rear cover 29 is provided with an opening, and the drive module 300 is inserted into the electrically adjustable antenna 2000 from the opening and is detachably mounted on the mounting bracket of the electrically adjustable antenna 2000 through the detachable connecting member 26 (such as a screw). Optionally, the detachable connecting member 26 is arranged at the end of the drive module 300, facilitating disassembly. Since the drive module 300 is mounted in the housing 27 of the electrically adjustable antenna 2000 in a pluggable manner, when the drive module 300 fails to remotely adjust the electrically adjustable angle of the antenna, it can be conveniently disassembled and replaced.

[0093] It should be noted that the electrically adjustable antenna 2000 provided by the embodiment of the present application has the same specific implementation and technical effects as the foregoing embodiments, and for the sake of brevity, the details are not mentioned herein and can be referred to the corresponding contents in the foregoing embodiments.

[0094] In summary, the electrically adjustable angle adjusting device can adjust the electrically adjustable angle of a plurality of phase shifters by using only one first drive motor for driving the gear shifting module and one second drive motor for driving the drive gear, thereby solving the problem of high cost caused by the fact that one motor is required to drive one group of phase shifters in the prior art.

[0095] Of course, the present application can have other various embodiments, and those skilled in the art can make various corresponding changes and modifications according to the present application without departing from the spirit and essence of the present application, but these corresponding changes and modifications should all belong to the protection scope of the claims attached to the present application.

Claims

1. An electric tilt angle adjustment device, characterized in that, include: A shift module, comprising a shift screw and a shift nut screwed to the shift screw; The shift nut is provided with a first bushing and a second bushing protruding from it; a drive gear is rotatably provided between the first bushing and the second bushing; A transmission module includes a transmission screw, a transmission nut screwed to the transmission screw, and a driven gear disposed on the transmission screw; the driven gear is coaxially connected to the transmission screw. The transmission module is provided in multiple ways, and each transmission module is distributed on a circle with the drive gear as the center. Furthermore, the driven gears on each of the transmission screws are spaced apart along the axial direction of the transmission screw; the drive gear meshes with the corresponding driven gear under the drive of the shift nut; The drive module includes a first drive motor that is driven by the shift screw and a second drive motor that is driven by the drive gear. The locking module includes multiple locking teeth distributed on the end face of the second bushing, multiple first locking gears, and multiple second locking gears; Each of the first locking gears has at least two protruding teeth on its end face; when the shift nut is at the start of the stroke, each locking tooth is located between the two protruding teeth of the corresponding first locking gear. Each of the second locking gears is respectively disposed on each of the transmission screws, and the second locking gears are coaxially connected to the transmission screws; each of the second locking gears meshes with the corresponding first locking gear.

2. The electric tilt angle adjustment device according to claim 1, characterized in that, The first drive motor is connected to the shift screw via a first drive assembly; the first drive assembly includes a first coupling, a first drive shaft, a first gear, a second gear, and an idler gear; the first coupling is coaxially connected to the first drive motor and abuts against the first drive shaft; the first gear is coaxially connected to the first drive shaft; the second gear is coaxially connected to the shift screw; the idler gear meshes with both the first gear and the second gear. The second drive motor is connected to the drive gear via a second drive assembly; the second drive assembly includes a second coupling and a second drive shaft; the second coupling is coaxially connected to the second drive motor and abuts against the second drive shaft; a key is protruding from the outer surface of the second drive shaft, and a keyway adapted to the key is provided on the inner side of the drive gear; the second drive shaft and... The drive gears are coaxially connected.

3. The electric tilt angle adjustment device according to claim 1, characterized in that, Both the locking tooth and the convex tooth are configured as pointed teeth.

4. The electric tilt angle adjustment device according to claim 2, characterized in that, It also includes a support module, which includes a mounting base plate and a first support frame, a second support frame, a third support frame, a fourth support frame, a fifth support frame, and two guide rails that are sequentially mounted on the mounting base plate along the length of the mounting base plate by screws. The shift screw is mounted on the second support frame, the fourth support frame, and the fifth support frame; The first drive shaft is mounted on the fourth support frame and the fifth support frame; The transmission screw is mounted on the first support frame, the second support frame, the third support frame, and the fourth support frame; The second drive shaft is mounted on the second support frame, the fourth support frame, and the fifth support frame; The first locking gear is mounted on the second support frame; The idler wheel is mounted on the fifth support frame; The distance between the two guide rails is adapted to the width of the drive module; the drive module is slidably connected between the two guide rails.

5. The electric tilt angle adjustment device according to claim 1, characterized in that, The shift module also includes a first stop ring for defining the starting point of the stroke of the shift nut, which is coaxially connected to the shift screw via a first set screw.

6. The electric tilt angle adjustment device according to claim 1, characterized in that, The transmission module also includes a second stop ring for limiting the end point of the travel of the transmission nut, a second set screw, a guide rod, a limiting ring for axially limiting the transmission screw, and a self-tapping screw; The second stop ring is coaxially connected to the transmission screw via the second set screw; The guide rod is arranged parallel to the axis of the transmission screw, and the transmission nut is slidably connected to the guide rod; The limiting ring is disposed at the end of the transmission screw, and the limiting ring is coaxially connected to the transmission screw through the self-tapping screw; The transmission module is provided in 2 to 6 parts.

7. The electric tilt angle adjustment device according to claim 6, characterized in that, The transmission module further includes a baffle for axially limiting the guide rod, the baffle being disposed at the end of the guide rod; and a plurality of snap rings for axially limiting the driven gear and the second locking gear; at least one end of the driven gear is provided with the snap ring, and one end of the second locking gear is provided with the snap ring.

8. The electric tilt angle adjustment device according to claim 1, characterized in that, The drive module further includes a male connector for connecting to a power source and a female connector for cascading output; the male connector is electrically connected to the first drive motor and the second drive motor.

9. A locking module, characterized in that, The electric tilt adjustment device according to any one of claims 1 to 8 includes a plurality of locking teeth, a plurality of first locking gears, and a plurality of second locking gears distributed on the end face of the second bushing protruding from the shift nut of the electric tilt adjustment device. Each of the first locking gears has at least two protruding teeth on its end face; when the shift nut is at the start of the stroke, each locking tooth is located between the two protruding teeth of the corresponding first locking gear. Each of the second locking gears is respectively disposed on the transmission screw of each of the electric tilt adjustment devices, and the second locking gear is coaxially connected to the transmission screw; each of the second locking gears meshes with the corresponding first locking gear.

10. An electrically adjustable antenna, characterized in that, Including the electrically adjustable downtilt device according to any one of claims 1 to 8, the electrically adjustable antenna further includes a phase shifter, an outer cover, a front cover, and a rear cover: The phase shifter is connected to the transmission nut of the electric downtilt adjustment device; The outer cover, the front cover, and the rear cover form a receiving space, and the electric tilt angle adjustment device is installed in the receiving space; and the rear cover has an opening, and the end of the drive module of the electric tilt angle adjustment device extends out from the opening.

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