WO2020238074A1

WO2020238074A1 - Electrical tilt antenna transmission switching device and base station antenna

Info

Publication number: WO2020238074A1
Application number: PCT/CN2019/119392
Authority: WO
Inventors: 范雄辉
Original assignee: 武汉虹信通信技术有限责任公司
Priority date: 2019-05-27
Filing date: 2019-11-19
Publication date: 2020-12-03
Also published as: CN110165412A

Abstract

The present invention relates to the field of mobile communication base station antennas, and provides an electrical tilt antenna transmission switching device and a base station antenna, wherein the transmission switching device comprises a transmission mechanism and a switching mechanism; the transmission mechanism comprises a plurality of driven members and two driving members; the driven members are connected to downtilt adjusting devices; the driving members match the driven members and are used for driving the driven members to adjust the downtilt angles of the corresponding downtilt adjusting devices; the plurality of driven members are distributed on both sides of the switching mechanism; the two sides of the switching mechanism are each connected to one driving member; and the switching mechanism is configured to drive each driving member to movably switch the driven members on the same side of the driving member. According to the electrical tilt antenna transmission switching device and the base station antenna, the switching member switches the driven members connected to the driving member, so that each driving member can drive different driven members to operate so as to achieve the purpose of adjusting the downtilt angle of different downtilt adjusting devices, reduce the amount of electric downtilt control and save the space of an antenna end face.

Description

Electric adjustable antenna transmission switching device and base station antenna

Cross references to related applications

This application claims the priority of the Chinese patent application filed on May 27, 2019 with the application number 201910446346.7 and the invention title of "electrically adjustable antenna transmission switching device and base station antenna", which is fully incorporated into this disclosure by reference.

Technical field

The present disclosure relates to the field of mobile communication base station antennas, and in particular to an electrically adjustable antenna transmission switching device and a base station antenna.

Background technique

The communication base station antenna serves as the final control terminal of the mobile communication network and makes the final adjustments to the network provided to the user. The electric downtilt function of the ESC antenna can meet the requirements of different use areas and different communication load areas of the same type of antenna, realize remote control and adjust the downtilt angle to provide greater network capacity, reduce communication interference, and reduce labor costs .

With the increase in the number of mobile communication users, the demand for communication capacity of the communication network is increasing. It is often required that the same antenna can meet the requirements of more communication frequency bands, and the electric downtilt angle of each different frequency band needs to be controlled independently, so the electric down The number of tilt controls has also increased correspondingly, and this will increase the cost and occupy the space on the antenna end face.

Existing multi-frequency electrically-tuned antennas need to be independently controlled because of the electrical downtilt angles of different frequency bands, and the number of electrical downtilt controls will increase accordingly, leading to the problem of a large occupation of the antenna end face space.

Summary of the invention

(1) Technical problems to be solved

The purpose of the present disclosure is to provide an electronically adjustable antenna transmission switching device and a base station antenna, which are used to solve or partially solve the existing multi-frequency electronically adjustable antenna because different frequency bands need independent control of the electric downtilt angle, and the number of electric downtilt controls will increase accordingly. This leads to the problem that the space on the end face of the antenna is relatively large.

(2) Technical solution

In order to solve the above technical problems, according to the first aspect of the present disclosure, an electrically adjustable antenna transmission switching device is provided, which includes: a transmission mechanism and a switching mechanism; the transmission mechanism includes a plurality of driven parts and two driving parts. The follower is connected to the downward inclination angle adjusting device, and the driving element is matched with the follower, and is used to drive the follower to move to adjust the downward inclination angle of the corresponding downward inclination angle adjusting device; The moving parts are distributed on both sides of the switching mechanism, and both sides of the switching mechanism are respectively connected to one of the driving parts, and the switching mechanism is used to drive the driving part in the driven parts on the same side of the driving part Perform mobile switching.

According to a second aspect of the present disclosure, a base station antenna is provided, including the electrically adjustable antenna transmission switching device described in the above solution.

(3) Beneficial effects

The electronically adjustable antenna transmission switching device and the base station antenna provided by the present disclosure switch the driven parts connected with the driving part by using a switching mechanism, so that the driving part can drive different driven parts to operate according to needs, thereby achieving different adjustments. The purpose of the downtilt angle of the tilt angle adjustment device can reduce the number of electric downtilt controls and save the space of the antenna end; at the same time, the electric adjustable antenna transmission switching device adopts the left and right arrangement structure of the follower, which makes full use of the space in the width direction of the antenna. This can reduce installation space, reduce antenna costs, and reduce the complexity of antenna installation and maintenance. In addition, two active parts are arranged on both sides of the switching mechanism, which is convenient for switching and adjusting the downward tilt angle quickly, shortening the switching time and improving the adjustment efficiency.

Description of the drawings

FIG. 1 is a first schematic diagram of an electrically adjustable antenna transmission switching device according to an embodiment of the disclosure;

FIG. 2 is a second schematic diagram of the transmission switching device for an electrically adjustable antenna according to an embodiment of the disclosure;

FIG. 3 is a schematic diagram of the connection between the switch lever and the switch frame in the embodiment of the disclosure;

4 is a schematic diagram of the connection of the sleeve in the embodiment of the disclosure;

5 is a schematic diagram of the connection structure between the transmission gear and the switching lever in the embodiment of the disclosure;

6 is a schematic diagram of the structure of the drive shaft in the embodiment of the disclosure;

Fig. 7 is a schematic structural diagram of a damping member in an embodiment of the disclosure;

8 is a schematic diagram of the structure of the first rack in the embodiment of the disclosure;

FIG. 9 is a schematic diagram of the structure of the base in the embodiment of the disclosure.

Description of reference signs:

1—first rack; 2—transmission gear; 3—switching shaft;

4—switching lever; 5—second rack; 6—switching gear;

7—drive shaft; 8—first bevel gear; 9—second bevel gear;

10—switching input adapter; 11—transmission input adapter; 12—damping parts;

13—Card slot; 14—Bottom plate; 15—Support;

16—switching rack; 17—round hole structure; 18—through hole;

19—Sleeve; 20—Block; 21—Spline structure;

22—C type block; 23—groove; 24—protrusion;

25—Bump; 26—Block groove; 27—Base;

1201—damping rubber; 1202—hook.

Detailed ways

The specific embodiments of the present disclosure will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are used to illustrate the present disclosure, but not to limit the scope of the present disclosure.

In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be interpreted broadly. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present disclosure can be understood in specific situations.

The embodiment of the present disclosure provides an electrically adjustable antenna transmission switching device, which includes a transmission mechanism and a switching mechanism. The transmission mechanism includes several driven parts and two driving parts. The follower is connected with the downward tilt angle adjusting device. The driving part is matched with the driven part and used to drive the driven part to move to adjust the downward tilt angle of the downward tilt angle adjusting device. Several followers are distributed on both sides of the switching mechanism. The two sides of the switching mechanism are respectively connected with an active part. The switching mechanism is used to drive the driving member to move and switch among the driven members on the same side of the driving member.

Specifically, for example, there are six followers, and three of the six followers are arranged in a group on both sides of the switching mechanism and the driving element. Each follower is connected with a downward inclination angle adjusting device to control the downward inclination angle of the downward inclination angle adjusting device. The driving member can be connected with each driven member to drive the driven member to move, and the movement of the driven member can adjust the downward inclination angle of the downward inclination angle adjusting device connected with the driven member.

When the downward inclination angle of another downward inclination angle adjustment device needs to be adjusted, the switching mechanism drives the active part to move, so that the active part is connected with another driven part, that is, the switching mechanism can realize the active part between different driven parts according to the needs. Switch, which can drive different followers to move. When the driving member is switched to be connected with another driven member, the driving member drives the other driven member to operate again, and then adjusts the downward inclination angle of the downward inclination angle adjusting device connected with the other driven member, thereby achieving multi-angle adjustment Requirements.

And arranging multiple followers on both sides of the switching mechanism can reduce the space occupation in the height direction of the electrically adjustable antenna (that is, the antenna), and at the same time make full use of the space in the width direction of the antenna, thereby reducing the installation occupation Space, reduce antenna costs, and reduce the complexity of antenna installation and maintenance.

Further, one active part is respectively arranged on both sides of the switching mechanism, that is, two active parts are arranged in total. When it is necessary to adjust the downtilt angle of the downtilt angle adjusting device located on the first side of the switching mechanism, the switching mechanism can drive the driving member located on the first side to move and switch to the follower corresponding to the downtilt angle adjusting device. At this time, the driving member on the second side may be located in the gap between the driven members, and no adjustment operation is performed. When it is necessary to adjust the downward tilt angle of the downward tilt angle adjusting device located on the second side of the switching mechanism, the switching mechanism can drive the driving member located on the second side to move and switch to the follower corresponding to the downward tilt angle adjusting device. Correspondingly, the driving member on the first side is located in the gap between the driven members, and no adjustment operation is performed. Therefore, when switching, the moving distance of the active part can be shortened, which is convenient for quickly switching and adjusting the downtilt angle, shortening the switching time, and improving the adjustment efficiency.

The electronically adjustable antenna transmission switching device provided in this embodiment uses a switching mechanism to switch the driven member connected to the driving member, so that the driving member can drive different driven members to run as required, thereby achieving adjustment and different slaves. The purpose of the downward tilt angle of the downward tilt angle adjustment device connected to the moving part can reduce the number of electric downward tilt control and save the space of the antenna end; at the same time, the electric adjustable antenna transmission switching device adopts the left and right arrangement structure of the driven part, which makes full use of the antenna width The space in the direction, so as to reduce the installation space, reduce the antenna cost, and reduce the complexity of antenna installation and maintenance.

In addition, two active parts are arranged on both sides of the switching mechanism, which is convenient for switching and adjusting the downward tilt angle quickly, shortening the switching time and improving the adjustment efficiency.

On the basis of the above-mentioned embodiment, and further, referring to Figures 1 and 2, the driven member includes a first rack 1; the driving member includes a transmission gear 2 meshing with the first rack 1, and several first racks 1 are arranged in parallel with each other. The transmission gear 2 can be matched with the first rack 1, and the linear movement of the first rack 1 is realized by the rotation of the transmission gear 2, thereby realizing the adjustment of the downward tilt angle of the downward tilt angle adjusting device.

The switching mechanism includes a linear moving mechanism, and the moving direction of the linear moving mechanism is perpendicular to the first rack 1. The switching mechanism can provide linear movement, and the movement direction is perpendicular to the length direction of the first rack 1, that is, the movement direction of the first rack 1. The linear movement direction is the direction spanning multiple first racks 1. The switching mechanism is connected with the driving member, which can drive the driving member to move along the linear movement direction, that is, it can drive the driving member to move among the multiple first racks 1, and the driving member can be moved to any first rack 1 , To realize the switching of the active part between different first racks 1.

On the basis of the above embodiment, further, the linear movement mechanism includes a switching gear 6, a switching lever 4 and a switching shaft 3. The axial direction of the switching shaft 3 is perpendicular to the follower, and the switching rod 4 is sleeved on the outside of the switching shaft 3. Referring to FIG. 3, circular ring structures can be provided on both sides of the switching rod 4 respectively, and the switching shaft 3 passes through the circular ring structure to achieve sliding connection with the switching rod 4. The switching rod 4 is provided with a second rack 5 along the axial direction of the switching shaft 3 on the side facing the follower. The switching gear 6 is in meshing connection with the second rack 5. The switching gear 6 is connected to the switching motor.

Through the rotation of the switching gear 6, the second rack 5 and the switching lever 4 can be driven to move linearly along the switching shaft 3, so as to realize the switching of the driving member between different driven members. The setting of the switching shaft 3 can be used to fix the switching rod 4 and also to limit the moving direction of the switching rod 4. Further, the switching gear 6 can be connected to the switching motor through the switching input adapter 10; the installation and removal of the motor can be easily and conveniently realized.

Further, the switching lever 4 can span all the first racks 1 along the length direction. The length of the second rack 5 may be greater than or equal to the distance between the two followers on either side of the follower on either side. In order to facilitate the drive transmission gear 2 to move to any first rack 1 to adjust the downward inclination angle of the downward inclination angle adjusting device corresponding to the first rack 1.

On the basis of the above-mentioned embodiment, further, the transmission mechanism further includes a driving member for driving the transmission gear 2 to rotate to drive the first rack 1 to move linearly.

On the basis of the foregoing embodiment, further, the driving member includes a driving shaft 7 and a first bevel gear 8 and a second bevel gear 9 that match. The axial direction of the driving shaft 7 is perpendicular to the first rack 1. The transmission gear 2 is sleeved on the outside of the drive shaft 7 and is fixedly connected with the drive shaft 7 in the circumferential direction. That is, the transmission gear 2 will not be displaced relative to the drive shaft 7 in the circumferential direction of the drive shaft 7, so that the rotation of the drive shaft 7 can drive the transmission gear 2 to rotate integrally.

The transmission gear 2 is connected to the switching mechanism through a connecting piece. There is no fixed structure between the transmission gear 2 and the drive shaft 7 along the axial direction of the drive shaft 7. The transmission gear 2 can move linearly along the axial direction of the drive shaft 7 under the drive of the switching mechanism and the connecting member, so as to realize the switching of the transmission gear 2 between different first racks 1.

The first bevel gear 8 is fixedly sleeved in the middle of the drive shaft 7, and the second bevel gear 9 is connected with the transmission motor. The first bevel gear 8 and the second bevel gear 9 are a pair of bevel gear sets that mesh with each other. The second bevel gear 9 is used as a driving bevel gear and rotates under the drive of a transmission motor, thereby driving the first bevel gear 8 and the drive shaft 7 to rotate integrally. The first bevel gear 8 and the drive shaft 7 may be fixedly connected only in the circumferential direction, or may be fixedly connected in the axial direction of the drive shaft 7 at the same time, for the purpose of driving the drive shaft 7 to rotate, which is not specifically limited.

The drive structure provided in this embodiment adopts the drive shaft 7 for transmission, which can ensure the consistency of the transmission torque and avoid the situation that the pushing and pulling forces between different first racks 1 are different. And by setting the bevel gear set to drive the drive shaft 7 to rotate, the bevel gear set can be set in the middle of the drive shaft 7, that is, the position corresponding to the switching mechanism, which can facilitate the fixing of the transmission motor, and make full use of the space at the switching mechanism to reduce The occupation of the antenna space is beneficial to further reduce the occupation of the antenna end face space.

On the basis of the above-mentioned embodiment, and further, referring to FIG. 3 and FIG. 4, the connecting piece includes a switching frame 16 and a sleeve 19. Both sides of the switching mechanism are respectively connected to one end of the switching frame 16. A through hole 18 is provided at the other end of the switching frame 16. Two sleeves 19 are respectively sleeved on the outside of the drive shaft 7 and fixedly connected with the drive shaft 7 in the circumferential direction. The switching frame 16 is sleeved outside the sleeve 19 at the through hole 18. The sleeve 19 is fixedly connected with the transmission gear 2 on one side of the switching frame 16. The sleeve 19 is provided with a ring of stoppers 20 on the outer wall of the other side of the switching frame 16.

The sleeve 19 is sleeved on the outside of the drive shaft 7, and the transmission gear 2 is fixedly connected with the sleeve 19. The sleeve 19 can rotate integrally with the drive shaft 7 in the through hole 18 at the other end of the switching frame 16, so as to realize the integral rotation of the transmission gear 2 and the drive shaft 7. At the same time, when the switching mechanism is operating, the switching frame 16 and the switching rod 4 move linearly together. Due to the limitation of the transmission gear 2 and the stop block 20 on both sides of the switching frame 16, the switching frame 16 can drive the sleeve 19 and the transmission gear 2 to move along the axial direction of the drive shaft 7, so that the transmission gear 2 can be located between different first racks 1 Switch.

One end of the switching frame 16 can be connected to the switching rod 4. The specific structure of the connecting piece is cleverly arranged, which can realize the integral linear movement of the transmission gear 2 and the switching mechanism to realize the switching between different first racks 1, and also realize the integral rotation of the transmission gear 2 and the drive shaft 7. The downward tilt angle of the downward tilt angle adjustment device is adjusted by driving the first rack 1 to move.

On the basis of the above embodiment, and further, referring to Figs. 4 and 6, the sleeve 19 and the drive shaft 7 and the first bevel gear 8 and the drive shaft 7 are respectively keyed connection structures. The sleeve 19 and the first bevel gear 8 can be respectively sleeved on the drive shaft 7 through the spline structure 21 to realize the transmission of the rotational torque.

On the basis of the foregoing embodiment, further, an electrically adjustable antenna transmission switching device further includes a damping member 12. Referring to FIG. 7, the two end surfaces of the damping member 12 are respectively provided with hooks 1202. Referring to FIG. 9, the two sides of the first rack 1 are provided with locking grooves 13 oppositely. The hooks 1202 at both ends of the damping member 12 are connected to the groove 13 in a one-to-one correspondence. A surface of the damping member 12 facing the first rack 1 is provided with a damping rubber 1201 that is toothed and meshed with the first rack 1.

The damping rubber 1201 interferes with the straight teeth on the first rack 1, and through this interference, the position of the first rack 1 is realized, and the movement of the first rack 1 under non-moving conditions is avoided.

On the basis of the above-mentioned embodiment, and further, referring to Fig. 2, the transmission mechanism and the switching mechanism are arranged on the bottom plate 14. The bottom plate 14 is provided with a protrusion 25 along the length direction of the first rack 1, and the first rack A groove 23 is provided on the back side of 1, and the first rack 1 is connected to the bottom plate 14 through the cooperation of the groove 23 and the protrusion 25. The protrusion 25 on the bottom plate 14 can realize the supporting function of the first rack 1. The protrusion 25 only needs to be provided for a section along the length direction of the first rack 1.

Referring to Figures 8 and 9, the first rack 1 is provided with bosses 24 on both sides, the bottom plate 14 is provided with a C-shaped stop groove 26 at the position corresponding to the boss 24, the boss 24 and the stop groove 26 Matching connection. The bosses 24 on both sides of the first rack 1 are respectively locked inside the stop groove 26. The stop groove 26 can limit the width and height direction of the first rack 1, and can realize that the boss 24 runs along the inside of the stop groove 26. The first rack 1 moves in the longitudinal direction.

On the basis of the foregoing embodiment, further, a base station antenna includes the electrically adjustable antenna transmission switching device described in any of the foregoing embodiments.

On the basis of the above-mentioned embodiment, further, an electrically adjustable antenna transmission switching device is used to connect and drive a plurality of downtilt angle adjusting devices, and realize switching between the multiple downtilt angle devices. The device mainly includes a switching mechanism, a transmission mechanism and other parts. The switching mechanism adopts a rack and pinion structure, the switching gear 6 drives the switching rack to move, and two transmission gears 2 are sleeved at both ends of the rack. By switching the gear 6 to drive the rack and push the transmission gear 2 to move, switching between different transmission racks, that is, the first rack 1 is realized. The transmission mechanism uses a set of bevel gears to perform motion steering. The driven bevel gear is fixed with the transmission shaft, ie, the drive shaft 7, and the transmission shaft drives the transmission gear 2 to move through the groove 23 on it, namely the spline structure 21.

Specifically, the switching mechanism includes a switching shaft 3, a switching lever 4, a switching gear 6 and a transmission gear 2. The transmission mechanism includes a transmission input bevel gear, a driven bevel gear, a drive shaft 7, a first rack 1 and a damping member 12. Other parts include transmission input adapter 11, switching input adapter 10, base 27, bottom plate 14, and bracket 15.

One end of the switching input adapter 10 is connected with the switching motor, and the other end is connected with the switching gear 6. One end of the transmission input adapter 11 is connected with the transmission motor, and the other end is connected with the second bevel gear 9. By switching the input adapter 10 and the transmission input adapter 11, the installation and removal of the motor can be easily and conveniently realized.

The switching gear 6 and the switching lever 4 mesh with the straight teeth on the switching lever 4 through the straight teeth on the switching gear 6 and the rotation of the switching gear 6 drives the switching lever 4 to move. Realize the conversion from circular motion to plane motion. The switching rod 4 has a circular hole structure 17, and the circular hole structure 17 is arranged on one side surface of the switching rod 4 in a circular hole shape. The round hole structure 17 is sleeved on the switching shaft 3, so that the switching rod 4 moves along the switching shaft 3, and has the function of supporting and limiting the switching rod 4.

The two ends of the switching rod 4 are the switching frame 16, and its purpose is to push the transmission gear 2 to move. The head of the switching frame 16 is a switching sleeve hole, that is, a through hole 18, whose purpose is to sleeve the transmission gear 2. The sleeve 19 of the transmission gear 2 passes through the switching sleeve hole of the switching frame 16. Referring to Figure 5, the non-gear end of the sleeve 19 is blocked by a C-shaped block 22. The C-shaped block 22 can be blocked between the stop block 20 and the switching frame 16. In this way, the transmission gear 2 is sleeved on the switching lever 4. The sleeve 19 and the transmission gear 2 can be an integral structure, or two parts can be fixedly connected, which is not specifically limited.

The inner hole of the sleeve 19 of the transmission gear 2 is a spline structure 21 through which the drive shaft 7 passes and cooperates with the spline structure 21 of the transmission gear 2. This matching structure has the function of transmitting power and at the same time the function of the sliding groove of the transmission gear 2. It can realize the synchronous translation of the transmission gear 2 and the switch lever 4, and can also make a circular movement around the circular hole on the switch frame 16 and the drive shaft 7 integrally. The rotation of the switching gear 6 drives the switching lever 4 to translate, and synchronously pushes the transmission gear 2 to translate, so as to realize the switching between different transmission racks.

The first bevel gear 8 is fixed on the drive shaft 7 and realizes synchronous movement with the drive shaft 7. The transmission gear 2 is sleeved on the drive shaft 7 through a spline structure 21. The first bevel gear 8 drives the drive shaft 7 to rotate, the drive shaft 7 drives the transmission gear 2 to rotate, and the transmission gear 2 pushes the transmission rack to move, realizing the transmission of the rotation of the motor to the linear motion of the rack.

A base 27 can be provided on the bottom plate 14, and a limiting structure such as the card slot 13, the protrusion 25 and the blocking groove 26 can be provided on the base 27. The damping member 12 engages with the groove 13 on the base 27 through the hooks 1202 on both sides thereof, and is fixed in the groove 13 of the base 27. There is a damping rubber 1201 on the damping member 12, and the damping rubber 1201 interferes with the straight teeth on the transmission rack. This interference realizes the limit of the transmission rack and avoids the movement of the transmission rack under non-moving conditions. The damping member 12 adopts a rubber interference transmission rack to provide a certain resistance to limit the movement of the transmission gear 2.

The bosses 24 on both sides of the transmission rack cooperate with the stop groove 26 on the base 27 to limit the width and height of the rack. The transmission rack cooperates with the protrusion 25 on the bottom plate 14 through the groove 23 on the back of the transmission rack to realize the supporting function of the transmission rack. The bottom plate 14 can also be provided with brackets 15 on both sides of the first rack 1. The two ends of the switching shaft 3 and the two ends of the drive shaft 7 can be fixed by the brackets 15 respectively.

The electronically adjustable antenna transmission switching device can realize a set of 2 sets of transmission motors to control multiple sets of downtilt adjustment devices, which has obvious cost advantages for multi-band antennas and saves internal space of the antenna.

The purpose of this embodiment is to provide an electrically adjustable antenna transmission switching device with compact structure, low cost and small size. It solves the problem in the prior art that the electronically adjustable antennas above 4 frequencies need to be equipped with a corresponding number of motors, reduces the occupation of the internal space of the antenna, reduces the antenna cost, and reduces the complexity of antenna installation and maintenance.

This embodiment provides an electrically adjustable antenna transmission switching device, which is used to connect two sets of motors and drive a plurality of downtilt angle adjustment devices, and realize the switching between each downtilt angle adjustment device. Including switching mechanism, transmission mechanism. The switching mechanism includes a switching gear 6, a switching lever 4, a transmission gear 2, and a switching shaft 3. The switching gear 6 and the switching lever 4 are of a rack and pinion structure, and a transmission gear 2 is set at each end of the switching lever 4. The switching gear 6 is connected to the motor, and the motor drives the switching gear 6 to rotate. The switching lever 4 is connected to the switching gear 6 through the straight tooth structure on it. The switching gear 6 drives the switching lever 4 to translate, and the switching lever 4 drives the two ends The transmission gear 2 moves synchronously, and the transmission gear 2 is inserted into the straight teeth of the transmission rack to complete the meshing between the transmission gear 2 and the transmission rack. Realize the switch between different transmission racks.

The transmission mechanism includes a bevel gear set, a transmission shaft, a transmission rack, and a damping member 12. One bevel gear in the bevel gear set is connected to the motor, and the other bevel gear is fixed on the transmission shaft. This bevel gear drives the transmission shaft to rotate. The transmission shaft drives the transmission gear 2 on it to rotate, and the transmission gear 2 pushes the transmission. The rack moves. Realize the movement control of the downward tilt angle adjustment device.

The ESC antenna transmission switching device uses an adapter to connect with the motor, which can be easily installed and disassembled; the transmission shaft, namely the drive shaft 7, is used for transmission, and the transmission torque is the same, and there is no difference in the pushing and pulling forces between different racks; setting 2 The group transmission gear 2 is distributed on both sides, shortening the switching time.

The above are only the preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the disclosure Within the scope of protection.

Claims

An electrically adjustable antenna transmission switching device, which is characterized by comprising: a transmission mechanism and a switching mechanism; the transmission mechanism includes a plurality of driven parts and two driving parts, and the driven parts are connected with the downward tilt angle adjusting device, so The driving member is matched with the driven member and used to drive the driven member to move to adjust the downward tilt angle of the corresponding downward tilt angle adjusting device;

A plurality of the driven parts are distributed on both sides of the switching mechanism, and both sides of the switching mechanism are respectively connected to one of the driving parts, and the switching mechanism is used to drive the driving part on the same side of the driving part Move and switch among the followers.
The electronically adjustable antenna transmission switching device according to claim 1, wherein the driven member includes a first rack; the driving member includes a transmission gear meshed with the first rack, and a plurality of The first racks are arranged parallel to each other; the switching mechanism includes a linear moving mechanism, and the moving direction of the linear moving mechanism is perpendicular to the first rack.
The electronically adjustable antenna transmission switching device according to claim 2, wherein the linear movement mechanism comprises a switching gear, a switching rod, and a switching shaft; the axial direction of the switching shaft is perpendicular to the first rack , The switching rod is sleeved on the outside of the switching shaft, the side of the switching rod facing the first rack is provided with a second rack along the axial direction of the switching shaft, the switching gear and the The second rack is in meshing connection, and the switching gear is connected to the switching motor.
The electronically adjustable antenna transmission switching device according to claim 2 or 3, wherein the transmission mechanism further comprises a driving member for driving the transmission gear to rotate to drive the first rack to perform Move straight.
The electronically adjustable antenna transmission switching device according to claim 4, wherein the drive member comprises a drive shaft and a first bevel gear and a second bevel gear that match; the axial direction of the drive shaft is the same as that of the first bevel gear. A rack is arranged vertically, the transmission gear is sleeved on the outside of the drive shaft and is fixedly connected to the drive shaft in the circumferential direction, and the transmission gear is connected to the switching mechanism through a connecting piece; the first The bevel gear is fixedly sleeved in the middle part of the drive shaft, and the second bevel gear is connected with the transmission motor.
The electronically adjustable antenna transmission switching device according to claim 5, wherein the connecting member includes a switching frame and a sleeve; both sides of the switching mechanism are respectively connected to one end of the switching frame, and the other end of the switching frame A through hole is provided, the sleeve is sleeved on the outside of the drive shaft and is fixedly connected to the drive shaft in the circumferential direction, the switch frame is sleeved on the outside of the sleeve at the through hole, and the The sleeve is fixedly connected with the transmission gear on one side of the switching frame, and the sleeve is provided with a ring of stoppers on the outer wall of the other side of the switching frame.
The electronically adjustable antenna transmission switching device according to claim 6, wherein the sleeve and the drive shaft and the first bevel gear and the drive shaft are respectively keyed connection structures.
The electronically adjustable antenna transmission switching device according to claim 4, further comprising a damping member; two ends of the damping member are respectively provided with hooks, and two opposite sides of the first rack are provided with hooks. Grooves, the hooks at both ends of the damping member are connected to the grooves in a one-to-one correspondence, and the surface of the damping member facing the first rack is provided with a tooth shape and corresponding to the first rack. Meshing damping rubber.
The electrically adjustable antenna transmission switching device according to claim 4, wherein the transmission mechanism and the switching mechanism are arranged on a bottom plate, and the bottom plate is provided with bumps along the length direction of the first rack , A groove is provided on the back of the first rack, and the first rack is connected to the bottom plate through the cooperation of the groove and the bump;

Both sides of the first rack are respectively provided with bosses, the bottom plate is provided with a C-shaped blocking groove at a position corresponding to the position of the boss, and the boss is connected with the blocking groove in a mating manner.
A base station antenna, characterized by comprising the electrically adjustable antenna transmission switching device according to any one of claims 1-9.