CN210957020U

CN210957020U - Antenna, transmission device and switching mechanism

Info

Publication number: CN210957020U
Application number: CN201922031226.9U
Authority: CN
Inventors: 游建军; 黄潮生; 何海雁
Original assignee: Comba Telecom Technology Guangzhou Ltd
Current assignee: Comba Telecom Technology Guangzhou Ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-07-07
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses an antenna, a transmission device and a switching mechanism, wherein the switching mechanism comprises a transmission part; the position selecting unit comprises a worm which is rotatably arranged on the transmission part, at least two worm wheels which are in transmission fit with the worm and driving gears which are in one-to-one correspondence with the worm wheels, a first transmission shaft is arranged between the driving gears and the worm wheels, and two adjacent driving gears are longitudinally or/and transversely staggered and longitudinally and transversely staggered; and the driving unit is used for driving the transmission piece to reciprocate along a preset track. The switching mechanism can selectively drive the output shaft to rotate, and can adapt to the increase of antenna frequency bands without causing the complex transmission structure; the transmission device adopts the switching mechanism to provide power for adjusting at least two declination angles, so that a transmission system is simplified; the antenna adopts the transmission device, simplifies a transmission system, can adapt to the increase of the frequency range of the antenna, and is favorable for improving the reliability of the working performance of the multi-frequency antenna.

Description

Antenna, transmission device and switching mechanism

Technical Field

The utility model relates to the field of communication technology, especially, relate to an antenna, transmission and switching mechanism.

Background

With the increasing number of mobile communication terminal users, the demand for network capacity of stations in a mobile cellular network is increasing, and it is required to minimize interference between different stations, even between different sectors of the same station, that is, to maximize network capacity and minimize interference. This is usually achieved by adjusting the downtilt angle of the antenna beam at the station.

In the two ways of adjusting the beam downtilt angle, namely, mechanical downtilt and electronic downtilt, the advantage of electronic downtilt is obvious, and the method is currently a mainstream and future development trend. The control of the electrical downtilt angle mainly includes two major categories, namely an internal control and an external control, wherein the internal control is the mainstream at present and in the future.

However, the motors used for driving the phase shifters in the conventional transmission device still correspond to the phase shifter transmission mechanisms one by one, the number of the motors is not reduced, and the number of the driving circuits in the control module is not reduced as the number of the motors. Therefore, the control system and the transmission system of the multi-frequency antenna have high cost, the structure of the transmission system is relatively complex, and the reliability of the antenna is also influenced.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need for an antenna, an actuator and a switching mechanism. The switching mechanism can selectively drive the output shaft to rotate, and can adapt to the increase of antenna frequency bands without causing the complex transmission structure; the transmission device adopts the switching mechanism to realize power supply for adjusting at least two declination angles, and simplifies a transmission system; the antenna adopts the transmission device, simplifies a transmission system, can adapt to the increase of the frequency range of the antenna, and is favorable for improving the reliability of the working performance of the multi-frequency antenna.

The technical scheme is as follows:

in one aspect, the present application provides a switching mechanism comprising a transmission member; the positioning unit comprises a worm which is rotatably arranged on the transmission part, at least two worm wheels which are in transmission fit with the worm, and driving gears which are in one-to-one correspondence with the worm wheels and synchronously rotate, a first transmission shaft is arranged between the driving gears and the worm wheels, and two adjacent driving gears are longitudinally and transversely staggered; and the driving unit is used for driving the transmission piece to reciprocate along a preset track.

When the switching mechanism is used, the switching mechanism is arranged in the transmission device, so that the driving gear can drive the corresponding driven gear to rotate, and the adjacent two driving gears are longitudinally and transversely staggered, after one driving gear is meshed with one driven gear, other driving gears are staggered with the driven gear, and then only one corresponding output shaft is driven to rotate, and power output is realized. Specifically, when the downtilt angle of a certain antenna needs to be adjusted, the position of the medium plate in the phase shifter can be correspondingly adjusted, and the transmission part can be driven to move through the driving unit at the moment, so that the driving gear can be meshed with the corresponding driven gear, then the worm is rotated to drive the worm wheel to rotate, and further the driving gear is driven to rotate, and the output shaft is indirectly driven to rotate, so that power is provided for the movement of the medium plate of the phase shifter. The switching mechanism can selectively drive the output shaft to rotate, and the transmission structure can adapt to the increase of the antenna frequency band without causing the complexity of the transmission structure.

The technical solution is further explained below:

in one embodiment, at least one worm wheel is in a group, and two sides of the worm are respectively provided with a group of worm wheels.

In one embodiment, the driving unit comprises a screw rod and a nut rotatably arranged on the transmission member, the screw rod is in screw transmission fit with the nut, and the transmission member is arranged in a sliding manner.

In one embodiment, the switching mechanism further comprises a guide rod, and the transmission member is slidably connected with the guide rod.

In one embodiment, the position selecting unit further comprises a second transmission shaft which is rotatably inserted into the transmission member, and a bevel gear transmission structure is arranged between the second transmission shaft and the worm.

In one embodiment, the transmission member is a frame structure, the position selecting unit is disposed in the frame structure, and the first transmission shaft is rotatably disposed in the frame structure.

On the other hand, this application still provides a transmission, includes the switching structure in any above-mentioned embodiment, still includes installation unit and output unit, the driving medium slidable install in installation unit, output unit includes rotatable install in installation unit's output shaft and is used for driving output shaft pivoted driven gear, driven gear can mesh with the driving gear mutually.

When the transmission device is used, the driving gear can drive the corresponding driven gear to rotate, and is adjacent to the driving gear, the driving gear is vertically and transversely staggered, so that after one driving gear is meshed with the driven gear, other driving gears are staggered with the driven gear, and then only the corresponding output shaft is driven to rotate, and power output is realized. Specifically, when the downtilt angle of a certain antenna needs to be adjusted, the position of the medium plate in the phase shifter can be correspondingly adjusted, and the transmission part can be driven to move through the driving unit at the moment, so that the driving gear can be meshed with the corresponding driven gear, then the worm is rotated to drive the worm wheel to rotate, and further the driving gear is driven to rotate, and the output shaft is indirectly driven to rotate, so that power is provided for the movement of the medium plate of the phase shifter. The switching mechanism can selectively drive the output shaft to rotate, and the transmission structure can adapt to the increase of the antenna frequency band without causing the complexity of the transmission structure. The transmission device adopts the switching mechanism to realize power supply for adjusting at least two declination angles, and simplifies a transmission system.

The technical solution is further explained below:

in one embodiment, the driven gear is coaxial with the output shaft and is in synchronous transmission connection.

In one embodiment, at least one worm wheel is a group, and two sides of the worm are respectively provided with a group of worm wheels; the output units are arranged in two rows and are arranged on two sides of the worm at intervals.

In another aspect, the present application also provides an antenna comprising an actuator as claimed in any one of claims 7 to 9. The antenna adopts the transmission device, simplifies a transmission system, can adapt to the increase of the frequency range of the antenna, and is favorable for improving the reliability of the working performance of the multi-frequency antenna.

Drawings

FIG. 1 is a schematic diagram of a transmission in one embodiment;

FIG. 2 is a schematic view of the assembly of the switching mechanism and the mounting unit shown in FIG. 1;

FIG. 3 is a schematic structural diagram of the switching mechanism shown in FIG. 2;

fig. 4 is a schematic structural diagram of the switching mechanism shown in fig. 3 from another view angle.

Description of reference numerals:

100. a switching mechanism; 110. a transmission member; 120. a bit selection unit; 121. a worm; 122. a worm gear; 123. A driving gear; 124. a first drive shaft; 125. a second drive shaft; 126. a bevel gear transmission structure; 130. A drive unit; 132. a screw rod; 134. a nut; 140. a guide bar; 200. a mounting unit; 300. an output unit; 310. an output shaft; 320. a driven gear.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "secured to," "disposed on," "secured to," or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, when one element is considered as being in "transmission connection" with another element, the two elements can be fixed in a detachable connection mode or in an undetachable connection mode, and power transmission can be achieved, such as sleeving, clamping, integrally-formed fixing, welding and the like, and can be achieved in the prior art, so that the two elements are not redundant. When an element is perpendicular or nearly perpendicular to another element, it is desirable that the two elements are perpendicular, but some vertical error may exist due to manufacturing and assembly effects. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The references to "first" and "second" in the present invention do not denote any particular quantity or order, but rather are merely used to distinguish one name from another.

The adjustment of the down tilt angle of the antenna is often performed by means of a phase shifter, and the position of the dielectric plate in the phase shifter is adjusted in the actual adjustment process, that is, the down tilt angle is adjusted by moving the dielectric plate. At this time, some transmission mechanisms are needed to realize the movement of the medium plate; meanwhile, the power of the existing power equipment such as the motor, the linear motor, the pneumatic cylinder and the like can be output at different positions through the transmission device.

As shown in fig. 1 to fig. 2, the present application provides a transmission device, which can realize power output of two power sources at different positions, and can continuously increase output ends as required, and is applied to a multi-frequency antenna, so as to simplify a transmission system and facilitate the miniaturization development of the antenna.

The transmission of the present application is described below.

As shown in fig. 1 to 4, in one embodiment, an actuator is provided, which includes a switching mechanism 100, an output unit 300, and a mounting unit 200.

The switching mechanism 100 includes a transmission member 110, a position selecting unit 120 and a driving unit 130; the transmission member 110 is slidably installed at the mounting unit 200; the position selecting unit 120 comprises a worm 121 rotatably arranged on the transmission member 110, a worm wheel 125122 in transmission fit with the worm 121, and a driving gear 123 synchronously rotating with the worm wheel 125122, wherein a first transmission shaft 124 is arranged between the driving gear 123 and the worm wheel 122, and two adjacent driving gears 123 are staggered longitudinally and transversely; and the driving unit 130 is used for driving the transmission member 110 to reciprocate along a preset track.

The output unit 300 includes an output shaft 310 rotatably installed at the mounting unit 200, and a driven gear 320 for rotating the output shaft 310, the driven gear 320 being capable of meshing with the driving gear 123.

When the transmission device is used, the driving gear 123 can drive the corresponding driven gear 320 to rotate, and the two adjacent driving gears 123 are staggered longitudinally and transversely, so that after one driving gear 123 is meshed with the driven gear 320, other driving gears 123 are staggered with the driven gear 320, and only one corresponding output shaft 310 is driven to rotate, and power output is realized. Specifically, the output shaft 310 is in transmission connection with the corresponding medium plate through a transmission structure to provide power for the movement of the medium plate. When the declination angle of a certain antenna needs to be adjusted, the position of the medium plate in the phase shifter can be correspondingly adjusted, at this time, the driving unit 130 can drive the transmission piece 110 to move, so that the driving gear 123 can be meshed with the corresponding driven gear 320, then the worm 121 is rotated to drive the worm wheel 125122 to rotate, further the driving gear 123 is driven to rotate, and the output shaft 310 is indirectly driven to rotate, so that power is provided for the movement of the medium plate of the phase shifter. The switching mechanism 100 can selectively drive the output shaft 310 to rotate, and the transmission structure thereof can adapt to the increase of the antenna frequency band without causing the complicated transmission structure. The transmission device provides power for adjusting at least two downward inclination angles, simplifies a transmission system, and can adapt to the increase of the frequency range of the antenna without causing the complexity of the transmission structure.

It should be noted that the driving unit 130 may be an existing device capable of directly providing telescopic power, such as a pneumatic cylinder, a hydraulic cylinder, or a linear motor.

The driving unit 130 may also be a structure for indirectly providing a telescopic power, as shown in fig. 3, specifically, in this embodiment, the driving unit 130 includes a screw 132 and a nut 134 rotatably disposed on the transmission member 110, the screw 132 is in screw transmission fit with the nut 134, and the transmission member 110 is slidably disposed. Therefore, the movement of the transmission member 110 is realized by using the screw rod and nut structure, and the control of the movement distance is more accurate, so that the engagement between the driving gear 123 and the driven gear 320 is more accurate.

Or the driving unit 130 is a flexible transmission unit, and a flexible member (a flexible member may be a belt, a chain, a track, etc.) of the flexible transmission unit can drive the driving gear 123 to reciprocate along the axial direction of the second transmission shaft 125.

The "mounting unit 200" may be any mounting structure capable of mounting the above-described transmission components, such as a mounting bracket, a mounting seat, and a mounting case.

Specifically, in the present embodiment, the driving gear 123 and the worm wheel 125122 are coaxially and synchronously connected via the first transmission shaft 124. The worm wheel drives the first transmission shaft 124 to further drive the driving gear 123 to rotate, so that the position relation of the driving gear 123 on the first transmission shaft 124 can be conveniently adjusted, and the driving gear 123 can be staggered with other adjacent driving gears 123 in the longitudinal direction and the transverse direction.

On the basis of any of the above embodiments, as shown in fig. 3, in an embodiment, the switching mechanism 100 further includes a guide rod 140, the transmission member 110 is slidably connected to the guide rod 140, and the guide rod 140 is fixedly disposed on the mounting unit 200. Thus, the driving member 110 can only move along the axial direction of the guide rod 140 by using the guide rod 140, and the movement of the driving member 110 is more stable and precise, so that the driving gear 123 is conveniently meshed with the driven gear 320.

On the basis of any of the above embodiments, as shown in fig. 2 and fig. 3, in an embodiment, the position selecting unit 120 further includes a second transmission shaft 125, the second transmission shaft 125 is rotatably inserted into the transmission member 110, and a bevel gear transmission structure 126 is disposed between the second transmission shaft 125 and the worm 121. In this way, the second transmission shaft 125 is used to facilitate the docking of the power source outside the mounting unit 200, and the bevel gear transmission structure 126 is used to convert the power of the second transmission shaft 125 into the rotation power of the worm 121. The power source is a servo motor, and can realize positive and negative rotation power output.

In addition to any of the above embodiments, in one embodiment, the driven gear 320 is coaxial with the output shaft 310 and is in synchronous transmission connection. Therefore, direct transmission can be realized, and transmission errors are reduced.

In addition to any of the above embodiments, as shown in fig. 1 and fig. 2, in one embodiment, the driven gears 320 correspond to the output shafts 310 one by one, at least two driven gears 320 are provided, and two adjacent driven gears 320 are laterally spaced. So, can carry out lateral expansion according to the characteristics in antenna space, output unit 300 and combine the slant setting of driving gear 123 simultaneously, can make full use of the installation space of antenna, satisfy the control demand at the downward inclination of multifrequency antenna, compare with prior art, set up more in a flexible way, whole transmission system can simplify more, and can carry out the extension of transmission structure according to actual need.

On the basis of any of the above embodiments, as shown in fig. 2 and 3, in one embodiment, at least one worm wheel 122 is a set, and two sides of the worm 121 are respectively provided with a set of worm wheels 122; this output unit 300 is two rows, and the interval sets up in the both sides of worm 121, so can realize the downtilt angle control of the antenna of more frequency channels, and the structure is compacter, is favorable to reducing the volume of multifrequency antenna.

Based on any of the above embodiments, as shown in fig. 3 or fig. 4, in an embodiment, the transmission member 110 is a frame structure, the position selecting unit 120 is installed in the frame structure, and the first transmission shaft 124 is rotatably disposed in the frame structure, so as to facilitate modular assembly and facilitate adjustment of the position of the driving gear 123.

On the basis of any of the above embodiments, in an embodiment, an introducing portion (not labeled) is disposed between the gear teeth of the driving gear 123 and the gear teeth of the driven gear 320, so that the gear teeth are introduced into each other, and the engagement between the gear teeth and the gear teeth is smoother.

In one embodiment, an antenna is provided, which includes the actuator of any of the above embodiments. The antenna adopts the transmission device, simplifies a transmission system, can adapt to the increase of the frequency range of the antenna, and is favorable for improving the reliability of the working performance of the multi-frequency antenna.

At present, for a super multi-band antenna, along with the increase of frequency bands, for example, after the frequency band is greater than 8 frequencies, the size of a traditional transmission device is greatly increased, for example, each frequency band in the transmission device is distributed in a circular ring shape, the frequency bands are more and the diameter is larger, and along with the increase of the frequency bands, the frequency selection time of the transmission device is also greatly increased, the response speed is slow, and the reliability of the working performance of the multi-band antenna is also influenced.

Compared with the prior art, the method has the following advantages and beneficial effects:

1. the adjustment of the downtilt angle of the at least two antennas may be controlled by means of two power devices. Providing power for adjusting the declination angle.

2. The transmission device can realize unit design and production, greatly improve the production efficiency and improve the reliability of a transmission system.

3. The transmission device is very compact in structure, can adapt to the increase of antenna frequency bands, and only needs to expand the driving gear and the output shaft, other parts cannot be added, the overall rotating efficiency is basically unchanged, and the reliability of the working performance of the multi-frequency antenna is improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A switching mechanism, comprising:

a transmission member;

the positioning unit comprises a worm which is rotatably arranged on the transmission part, at least two worm wheels which are in transmission fit with the worm, and driving gears which are in one-to-one correspondence with the worm wheels and synchronously rotate, a first transmission shaft is arranged between the driving gears and the worm wheels, and two adjacent driving gears are longitudinally and transversely staggered; and

the driving unit is used for driving the transmission piece to reciprocate along a preset track.

2. The switching mechanism of claim 1, wherein at least one worm gear comprises a set of worm gears, and wherein a set of worm gears is disposed on each side of the worm.

3. The switching mechanism of claim 1, wherein the drive unit comprises a lead screw and a nut rotatably disposed on the transmission member, the lead screw is in screw-drive engagement with the nut, and the transmission member is slidably disposed.

4. The switching mechanism of claim 3, further comprising a guide bar, wherein the transmission is slidably coupled to the guide bar.

5. The switching mechanism according to claim 1, wherein the position selecting unit further comprises a second transmission shaft rotatably inserted into the transmission member, and a bevel gear transmission structure is provided between the second transmission shaft and the worm.

6. The switching mechanism of any one of claims 1 to 5, wherein the transmission member is a frame, the position selecting unit is disposed in the frame, and the first transmission shaft is rotatably disposed in the frame.

7. A transmission comprising the switching mechanism according to any one of claims 1 to 6, further comprising a mounting unit and an output unit, wherein the transmission member is slidably mounted on the mounting unit, the output unit comprises an output shaft rotatably mounted on the mounting unit and a driven gear for driving the output shaft to rotate, the output shaft corresponds to the driving gear one by one, and the driven gear can be engaged with the driving gear.

8. The transmission of claim 7, wherein the driven gear is coaxial with and in synchronous driving connection with the output shaft.

9. The transmission according to claim 7 or 8, wherein at least one worm wheel is a set, and a set of worm wheels is respectively arranged on two sides of the worm; the output units are arranged in two rows and are arranged on two sides of the worm at intervals.

10. An antenna comprising an actuator device according to any of claims 7 to 9.