Antenna shift transmission mechanism

Abstract

The present invention relates to the field of antennas, and discloses an antenna shift transmission mechanism for driving a multi-way phase shifter transmission, comprising: a first rotating shaft extending in a first direction, a first power member connected to the first rotating shaft, and a main power gear arranged on the first rotating shaft; N second rotating shafts arranged around the first rotating shaft and extending in the first direction, the second rotating shafts are used to drive the multi-way phase shifter to move, each second rotating shaft is provided with a driven gear, and a plurality of driven gears are staggered in the first direction; a switching component connected to each second rotating shaft, the switching component selectively drives the target rotating shaft to move toward the first rotating shaft, so that the driven gear arranged on the target rotating shaft meshes with the main power gear, and the other driven gears are separated from the main power gear. Compared with the prior art, the antenna shift transmission mechanism provided by the embodiment of the present invention has the advantages of reducing the volume, weight and cost of the transmission mechanism.

Description

Technical Field

[0001] The invention relates to the field of antennas, and in particular to an antenna shift transmission mechanism. Background Art

[0002] With the development of antenna technology, multi-band smart antennas will become an inevitable trend for future antennas, and the antenna scale will continue to expand, the number of channels will increase, and the number of phase adjustment paths will increase. The antenna phase adjustment mechanism is an important component of the antenna system and plays a vital role in realizing multi-path downtilt adjustment.

[0003] Most of the existing transmission mechanisms used for multi-channel phase adjustment of antennas use dual motors to achieve the switching and driving of multi-channel output shafts. The number of phase adjustment paths, the space occupied by the device, and the cost are the three major factors in the evaluation of structural solutions. Multi-band antennas will become the development trend of smart antennas in the future. Controlling the antenna phase adjustment mechanism requires adding a shifting function to achieve the adjustment of the phase of the multi-channel phase shifter. However, the increase in the number of antenna phase adjustment paths will lead to an increase in the space occupied by its mechanism, and the two are contradictory. Therefore, the design of the shifting transmission mechanism needs to reduce the size of the device through a reasonable structural layout when the number of phase adjustment paths increases, so as to meet the requirements of miniaturization design. Cost is crucial to the competitiveness of the product and is a priority factor in the evaluation of the structural solution.

[0004] However, the inventor of the present invention found that the multi-frequency antenna phase adjustment mechanism driven by dual motors in the antenna shift transmission mechanism in the prior art relies on the cooperation of two motors to achieve the shift and drive functions, but the motors are expensive and heavy. The introduction of two motors into the transmission mechanism will inevitably lead to an increase in its volume and weight, and an increase in cost, which is contrary to the design concept of lightweight, miniaturization, and high cost performance of the antenna. Therefore, how to effectively reduce the volume, weight, and cost of the antenna shift transmission mechanism has become an urgent problem to be solved. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide an antenna shift transmission mechanism, which can effectively reduce the volume, weight and cost of the transmission mechanism.

[0006] To solve the above technical problems, an embodiment of the present invention provides an antenna shift transmission mechanism for driving an antenna multi-way phase shifter to move, comprising: a first rotating shaft extending along a first direction, a first power member connected to the first rotating shaft, and a main power gear arranged on the first rotating shaft, the first power member being used to drive the first rotating shaft and the main power gear to rotate; N second rotating shafts arranged around the first rotating shaft and extending along the first direction, N being a positive integer, the second rotating shafts being used to move toward the multi-way phase shifter, each of the second rotating shafts being provided with a driven gear, and a plurality of the driven gears being staggered in the first direction; a switching component connected to each of the second rotating shafts, the switching component selectively driving a target rotating shaft to move toward the first rotating shaft so that the driven gear arranged on the target rotating shaft meshes with the main power gear, and the other driven gears are separated from the main power gear, the target rotating shaft being any of the second rotating shafts.

[0007] Compared with the prior art, the embodiment of the present invention sets a switching component connected to the second rotating shaft, and the switching component selectively drives the target rotating shaft to move toward the first rotating shaft so that the driven gear set on the target rotating shaft is meshed with the main power gear, thereby realizing transmission to different multi-way phase shifters. There is no need to set a planetary gear for shifting in the prior art, thereby effectively reducing the volume of the antenna shift transmission mechanism; in addition, the staggered arrangement of several driven gears in the first direction can further reduce the space occupied by several driven gears in the circumferential direction of the first rotating shaft, further reducing the volume of the antenna shift transmission mechanism.

[0008] In addition, the switching component includes a turntable and N sliders; the turntable is connected to the first rotating shaft, and each of the second rotating shafts is fixedly provided with a slider; the turntable includes a slide rail arranged in cooperation with the slider; the slide rail includes a recessed portion and an arc-shaped isolation portion connected to each other, the center of the arc-shaped isolation portion falls on the first rotating shaft, and the recessed portion is formed from two terminals of the arc-shaped isolation portion toward the center of the circle; during the rotation process, the turntable selectively moves the slider arranged on the target rotating shaft to the recessed portion so that the target rotating shaft moves toward the first rotating shaft.

[0009] In addition, the slide rail is a groove arranged on the turntable, and the sliding block extends into the groove and abuts against the inner wall of the groove.

[0010] In addition, the circular slide rail is a protrusion arranged on the turntable, and the sliding block is supported on a side surface of the protrusion away from the first rotating axis.

[0011] In addition, the N sliders are staggered in the first direction.

[0012] In addition, it also includes: a positioning device arranged along the first rotation axis, and the positioning device is used to position the recessed portion.

[0013] In addition, it also includes: a first one-way bearing and a second one-way bearing, the first one-way bearing and the second one-way bearing rotate in opposite directions; the first one-way bearing connects the first rotating shaft and the active power gear, and the second one-way bearing connects the first rotating shaft and the turntable. The first one-way bearing and the second one-way bearing are arranged so that when the first rotating shaft rotates in the forward direction, the driven gear can be driven to rotate for transmission, and when the first rotating shaft rotates in the reverse direction, the turntable can be driven to rotate for gear shifting, so that one rotating shaft can simultaneously realize the two functions of transmission and gear shifting, and further reduce the volume.

[0014] In addition, it also includes: a plurality of first transmission wheels and a plurality of second transmission wheels; the second rotating shaft includes a steering shaft and a transmission shaft for connecting to the multi-way phase shifter; a first transmission wheel is arranged on each steering shaft, and a second transmission wheel is arranged on each transmission shaft; a plurality of the first transmission wheels correspond to a plurality of the second transmission wheels one by one and mesh with each other. When the transmission shaft is meshed with the main power gear, the reverse rotation of the main power gear can drive the forward rotation of the transmission shaft; when the steering shaft is meshed with the main power gear, the reverse rotation of the main power gear can drive the forward rotation of the steering shaft, and the forward rotation of the steering shaft can drive the reverse rotation of the transmission shaft through the first transmission wheel and the second transmission wheel, so that the forward and reverse rotation of the transmission shaft can be realized without changing the rotation direction of the first rotating shaft.

[0015] In addition, the first transmission wheel and the second transmission wheel isolated from each other are arranged alternately in the first direction. Such an arrangement can reduce the space between the first transmission wheel and the second transmission wheel which are not meshed with each other in the circumferential direction of the first rotating shaft, and further reduce the volume.

[0016] In addition, the second rotating shaft includes a first connecting part, a second connecting part, and a rotating member connecting the first connecting part and the second connecting part; the first connecting part rotates around the rotating member driven by the switching component to move toward or away from the first rotating shaft. It is ensured that the second connecting part does not need to move during the gear shifting process, thereby improving the stability of the connection between the antenna gear shifting transmission mechanism and the multi-channel phase shifter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural schematic diagram of an antenna shift transmission mechanism provided by a first embodiment of the present invention;

[0018] Figure 2is a schematic structural diagram of a shift device in an antenna shift transmission mechanism provided by a first embodiment of the present invention;

[0019] Figure 3 is a top view of a shift device in an antenna shift transmission mechanism provided by a first embodiment of the present invention;

[0020] Figure 4 is a structural schematic diagram of an antenna shift transmission mechanism provided by a second embodiment of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the antenna shift transmission mechanism provided by the third embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can be implemented.

[0023] The first embodiment of the present invention relates to an antenna shift transmission structure, the specific structure is as follows Figure 1 As shown, including: along a first direction ( Figure 1 A first rotating shaft 10 extending in the first direction (Z direction), a first power member (not shown), a main power gear 20, Figure 1 The invention relates to N second rotating shafts 30 extending in the Z direction (in the middle Z direction), N driven gears 40 and a switching assembly 50, where N is a positive integer. Among them, the first rotating shaft 10 is connected to the first power member, and the main power gear 20 is arranged on the first rotating shaft 10. The first power member is used to drive the first rotating shaft 10 to rotate, and the main power gear 20 is driven to rotate when the first rotating shaft 10 rotates. A driven gear 40 is arranged on each second rotating shaft 30, and several driven gears 40 are staggered in the first direction. The switching assembly 50 is connected to each second rotating shaft 30, and the switching assembly 50 is used to switch to the target rotating shaft (for example Figure 1 When the second rotating shaft A in the gear shifting is used, the target rotating shaft is selectively driven to move toward the first rotating shaft 10 so that the driven gear 40 arranged on the target rotating shaft is engaged with the main power gear 20, and the other driven gears 40 are separated from the main power gear 20, and the target rotating shaft is any second rotating shaft 30.

[0024] Compared with the prior art, a switching component 50 is provided to be connected to each second rotating shaft 30. When the switching component 50 is shifting gears, a second rotating shaft 30 is selectively set as the target rotating shaft, driving the target rotating shaft to move toward the first rotating shaft 10, so that the driven gear 40 provided on the target rotating shaft is meshed with the main power gear 20, thereby realizing transmission to different multi-way phase shifters. There is no need to set a planetary gear for shifting gears as in the prior art, thereby effectively reducing the volume of the antenna shift transmission mechanism; in addition, the staggered arrangement of several driven gears 40 in the first direction can further reduce the space of several driven gears 40 in the circumferential direction of the first rotating shaft, further reducing the volume of the antenna shift transmission mechanism.

[0025] The specific structure of the switching component 50 is described below by way of example. It should be understood that the following is only a specific example of the switching component 50 in this embodiment and does not constitute a limitation. In other embodiments of the present invention, other structures may also be used. Specifically, the configuration may be flexibly performed according to actual needs, as long as the target rotation axis can move toward the first rotation axis 10. Please refer to Figure 1 , Figure 2 The switching assembly 50 includes a rotating disk 51 and N sliders 52. The rotating disk 51 is connected to the first rotating shaft 10, and the sliders 52 are arranged on the second rotating shaft 30. Each second rotating shaft 30 is fixed with a slider 52. Figure 3 The turntable 51 is provided with a slide rail 53 which cooperates with the slider 52. The slide rail 53 includes a recessed portion 531 and an arc-shaped isolation portion 532 which are connected to each other. The center of the arc-shaped isolation portion 532 falls on the first rotation axis 10. The recessed portion 531 is formed by being recessed from two ends of the arc-shaped isolation portion toward the center of the circle. During the rotation process, the turntable 51 selectively moves the slider 52 provided on the target rotation axis to the recessed portion 531. Since the recessed portion 531 is recessed toward the center of the circle, the slider 52 of the target rotation axis moves toward the center of the circle, thereby driving the target rotation axis to move toward the first rotation axis 10.

[0026] Specifically, in this embodiment, the slide rail 53 is a groove provided on the rotating disk 51, and the slider 52 partially extends into the groove and abuts against the inner wall of the groove. It can be understood that the above is only an example of a specific structure of the slide rail 53 and the slider 52 in this embodiment, and does not constitute a limitation. In other embodiments of the present invention, other structures may also be used, for example, the slide rail 53 may also be a protrusion provided on the rotating disk 51, and the slider 52 abuts against the side surface of the protrusion away from the first rotating axis. In addition, elastic members such as springs may be provided to assist the slider 52 in resetting, and the specific configuration may be flexibly performed according to actual needs.

[0027] Preferably, in this embodiment, please continue to refer to Figure 1, the N sliders 52 are staggered in the first direction. The staggered arrangement of the N sliders 52 in the first direction can make the N sliders 52 arranged more closely in the circumferential direction of the first rotating shaft 10, reduce the space occupied by the N sliders 52 in the circumferential direction of the first rotating shaft 10, and further reduce the volume of the antenna shift transmission mechanism.

[0028] Preferably, Figure 1 As shown, in the present embodiment, the second rotating shaft 30 includes a first connecting portion 33, a second connecting portion 34 and a rotating member 35 connecting the first connecting portion 33 and the second connecting portion 34. The first connecting portion 33 rotates around the rotating member 35 driven by the switching assembly 50 to move toward or away from the first rotating shaft 10, thereby ensuring that the second connecting portion 34 does not need to move during the gear shifting process, thereby improving the stability of the connection between the antenna gear shifting transmission mechanism and the multi-way phase shifter.

[0029] The second embodiment of the present invention relates to an antenna shift transmission mechanism. The second embodiment is substantially the same as the first embodiment, with the main difference being that in the first embodiment, the main power gear 20 is disposed on the first rotating shaft 10. In the second embodiment of the present invention, Figure 4 As shown, the first one-way bearing 60 and the second one-way bearing 70 are also included. The first one-way bearing 60 and the second one-way bearing 70 rotate in opposite directions. The first one-way bearing 60 connects the first rotating shaft 10 and the main power gear 20, and the second one-way bearing 70 connects the first rotating shaft 10 and the rotating disk 51.

[0030] Compared with the prior art, the antenna shift transmission mechanism provided in the second embodiment of the present invention is provided with a first one-way bearing 60 connecting the first rotating shaft 10 and the main power gear 20, and a second one-way bearing 70 connecting the first rotating shaft 10 and the turntable 51. Since the rotation directions of the first one-way bearing 60 and the second one-way bearing 70 are opposite, when the first rotating shaft 10 rotates forward, the main power gear 20 can be driven to rotate via the first one-way bearing 60. At this time, since the rotation direction of the second one-way bearing 70 is opposite to that of the first one-way bearing 60, the second one-way bearing 70 cannot unload the force and drive the turntable 51 to rotate; conversely, when the first rotating shaft 10 rotates reversely, the turntable 51 can be driven to rotate without driving the main power gear 20 to rotate, thereby realizing the two functions of transmission and shifting through a single first rotating shaft 10, and further reducing the volume.

[0031] The third embodiment of the present invention relates to an antenna shift transmission mechanism. The third embodiment is substantially the same as the first embodiment, with the main difference being that in the first embodiment, each driven gear 40 and the second rotating shaft 30 are used to connect and transmit with the antenna converter. In the third embodiment of the present invention, Figure 5As shown, the second rotating shaft 30 includes a steering shaft 31 and a transmission shaft 32 for connecting to the antenna converter; it also includes a plurality of first transmission wheels 80 and a plurality of second transmission wheels 90, a first transmission wheel 80 is arranged on each steering shaft 31, and a second transmission wheel 90 is arranged on each transmission shaft 32; the plurality of first transmission wheels 80 and the plurality of second transmission wheels 90 correspond to each other one by one and mesh with each other.

[0032] Compared with the prior art, the antenna shift transmission structure provided in the third embodiment of the present invention provides a second rotating shaft 30 including a steering shaft 31 and a transmission shaft 32 connected to a multi-way phase shifter. When the driven gear 40 on the steering shaft 31 is meshed with the main power gear 20, the main power gear 20 rotates forward to drive the steering shaft 31 to rotate in the reverse direction. The first transmission wheel 80 provided on the steering shaft 31 also rotates in the reverse direction, driving the second transmission wheel 90 meshed therewith to rotate forward, thereby driving the transmission shaft 32 connected to the multi-way phase shifter to rotate forward. When the driven gear 40 on the transmission shaft 32 is meshed with the main power gear 20, the main power gear 20 rotates forward to drive the transmission shaft 32 to rotate in the reverse direction, thereby achieving the forward and reverse rotation of the transmission shaft 32 respectively driven by the forward rotation of a single first rotating shaft.

[0033] Preferably, in this embodiment, the mutually isolated first transmission wheels 80 and the second transmission wheels 90 are staggered in the first direction. Specifically, in this embodiment, every two mutually meshing first transmission wheels 80 and second transmission wheels 90 are combined to form a transmission wheel set, the mutually isolated first transmission wheels 80 and second transmission wheels 90 are the first transmission wheels 80 and second transmission wheels 90 located in different transmission wheel sets, and the mutually isolated first transmission wheels 80 and second transmission wheels 90 are staggered in the first direction, that is, different transmission wheel sets are staggered in the first direction. Such an arrangement can reduce the space between the non-mutually meshing first transmission wheels 80 and second transmission wheels 90 in the circumferential direction of the first rotating shaft, and further reduce the volume.

[0034] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. An antenna shift transmission mechanism, used to drive a multi-channel phase shifter transmission, characterized in that: include: A first rotating shaft extending in a first direction, a first power member connected to the first rotating shaft, and a main power gear disposed on the first rotating shaft, wherein the first power member is used to drive the first rotating shaft and the main power gear to rotate; N second rotation axes arranged around the first rotation axis and extending along the first direction, N being a positive integer, the second rotation axes being used to drive the multi-way phase shifter to move, each of the second rotation axes being provided with a driven gear, and a plurality of the driven gears being staggered in the first direction; a switching assembly connected to each of the second rotating shafts, the switching assembly selectively driving the target rotating shaft to move toward the first rotating shaft so that the driven gear disposed on the target rotating shaft meshes with the active power gear and the other driven gears are separated from the active power gear, the target rotating shaft being any of the second rotating shafts; The switching component includes a turntable and N sliders; The rotating disk is connected to the first rotating shaft, and each of the second rotating shafts is fixedly provided with a sliding block; The rotating disk is provided with a slide rail which cooperates with the sliding block; The slide rail comprises a recessed portion and an arc-shaped isolation portion connected to each other, the center of the arc-shaped isolation portion falls on the first rotating shaft, and the recessed portion is formed by being recessed from two terminals of the arc-shaped isolation portion toward the center of the circle; During the rotation of the rotating disk, the sliding block disposed on the target rotation axis is selectively moved to the recessed portion so that the target rotation axis moves toward the first rotation axis.

2. The antenna shift transmission mechanism according to claim 1, characterized in that: The slide rail is a groove arranged on the turntable, and the sliding block extends into the groove and abuts against the inner wall of the groove.

3. The antenna shift transmission mechanism according to claim 1, characterized in that: The slide rail is a protrusion disposed on the turntable, and the slider is supported on a side surface of the protrusion away from the first rotation axis.

4. The antenna shift transmission mechanism according to claim 1, characterized in that: The N sliders are staggered in the first direction.

5. The antenna shift transmission mechanism according to claim 1, characterized in that: Also includes: A positioning device is arranged along the first rotation axis, and the positioning device is used to position the recessed portion.

6. The antenna shift transmission mechanism according to claim 1, characterized in that: Also includes: A first one-way bearing and a second one-way bearing, wherein the first one-way bearing and the second one-way bearing rotate in opposite directions; The first one-way bearing connects the first rotating shaft and the active power gear, and the second one-way bearing connects the first rotating shaft and the turntable.

7. The antenna shift transmission mechanism according to claim 6, characterized in that: Also includes: a plurality of first transmission wheels and a plurality of second transmission wheels; The second rotating shaft includes a steering shaft and a transmission shaft for connecting to the multi-way phase shifter; One of the first transmission wheels is arranged on each of the steering shafts, and one of the second transmission wheels is arranged on each of the transmission shafts; The plurality of first transmission wheels correspond to the plurality of second transmission wheels one by one and mesh with each other.

8. The antenna shift transmission mechanism according to claim 7, characterized in that: Also includes: The first transmission wheels and the second transmission wheels isolated from each other are arranged alternately in the first direction.

9. The antenna shift transmission mechanism according to claim 1, characterized in that: The second rotating shaft includes a first connecting portion, a second connecting portion, and a rotating member connecting the first connecting portion and the second connecting portion; Driven by the switching assembly, the first connecting portion rotates around the rotating member to move toward or away from the first rotating axis.

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