CN213845519U

CN213845519U - Phase-shifting transmission mechanism and antenna

Info

Publication number: CN213845519U
Application number: CN202023227215.7U
Authority: CN
Inventors: 吴兆建; 段红彬; 王钦源; 郑桂鑫
Original assignee: Comba Telecom Technology Guangzhou Ltd; Jingxin RF Technology Guangzhou Co ltd
Current assignee: Comba Telecom Technology Guangzhou Ltd; Jingxin RF Technology Guangzhou Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-07-30
Anticipated expiration: 2030-12-28

Abstract

The utility model provides a phase shift drive mechanism and antenna, its technical scheme main points are phase shift drive mechanism and include drive screw and supporting seat, drive screw passes the supporting seat and can relative supporting seat free rotation, the supporting seat is equipped with along drive screw axial front and back both sides and makes supporting seat and drive screw along axial relatively fixed's stop gear, stop gear includes that at least one detachably connects the spacing fastener on drive screw, spacing fastener makes the supporting seat along drive screw's axial relatively fixed with one side butt of supporting seat. The supporting seat can be installed on the fixed supporting surface, the supporting seat is sleeved on the transmission screw rod, the supporting seat and the transmission screw rod are mutually fixed along the axial direction of the transmission screw rod by means of the limiting mechanism, the axial limiting position of the transmission screw rod is provided, the resistance reaction force of the pull rod is separated from the supporting seat, the damage of internal parts of the motor caused by the influence of the output shaft of the motor is avoided, and the stability and the accuracy of phase-shifting adjustment can also be improved.

Description

Phase-shifting transmission mechanism and antenna

Technical Field

The utility model relates to an antenna technology field especially relates to a phase shift drive mechanism and antenna.

Background

Generally, a method for adjusting an electrical downtilt of a 5G antenna generally includes arranging a plurality of small phase shifters, respectively connecting each radiating element through a feed network, and driving a dielectric plate of a phase shifter in the antenna to change a phase of each radiating element through a transmission device, so as to change a phase of the antenna, thereby achieving an effect of changing a coverage area.

The 5G antenna transmission device comprises a driving motor, a transmission screw rod, a connecting piece, a pull rod and the like. The screw motion of the output shaft of the driving motor is converted into the linear motion of the pull rod through the pull rod connecting piece in threaded connection on the transmission screw rod, the pull rod is connected with the phase shifter, and the pull rod drives the phase shifter dielectric plate to move while moving so as to adjust the phase of the phase shifter.

In practical application, the linear motion of the pull rod often generates certain resistance due to relative motion friction among all parts, so that a reaction force is formed on the screw rod, the screw rod with the reaction force can be transmitted back to the output shaft of the driving motor, the abrasion of internal parts of the motor is caused after long-term work, the rotation blockage of the transmission device is abnormal more seriously, and the electric regulation function of the antenna is disabled.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a first purpose aims at providing one kind and can cut off pull rod resistance reaction and avoid causing the unusual phase-shifting drive mechanism that became invalid of motor internals wearing and tearing and transmission locked rotor in motor output shaft.

Another object of the present invention is to provide an antenna using the above phase shift transmission mechanism.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a phase shift drive mechanism, includes drive screw, still includes the supporting seat, drive screw passes supporting seat and relative supporting seat free rotation, the supporting seat is equipped with along drive screw axial front and back both sides and makes supporting seat and drive screw along axial relatively fixed's stop gear, stop gear includes that at least one detachably connects the spacing fastener on drive screw, spacing fastener makes the supporting seat along drive screw's axial relatively fixed with one side butt of supporting seat.

Further setting: the supporting seat is sleeved on the transmission screw and abutted against the limiting step, and the limiting clamping piece is installed on one side, far away from the limiting step, of the supporting seat and forms axial limiting for the supporting seat together with the limiting step.

Further setting: the transmission screw is provided with an annular clamping groove along the circumferential direction, the limiting clamping piece comprises an annular clamping portion which can elastically deform and is embedded into the annular clamping groove, and the annular clamping portion is provided with a deformation notch.

Further setting: the inner wall of the annular clamping portion protrudes out of a position opposite to the deformation notch to form a pin shaft, and a pin hole for the pin shaft to penetrate through is radially formed in the annular clamping groove along the transmission screw.

Further setting: the supporting seat comprises an installing head and a base, wherein an installing hole for a transmission screw to pass through and freely rotate is formed in the installing head, and the base is connected to the lower portion of the installing head and used for being fixedly connected with the fixed supporting surface.

Further setting: the bottom of the base is provided with a fastening hole along the height direction, and a fastening piece can penetrate through the fastening hole to fix the supporting seat and the fixed supporting surface.

Further setting: the bottom of the base is convexly provided with a positioning column which can penetrate into the positioning hole of the fixed supporting surface.

Further setting: the bottom of the base extends outwards to form a flange.

Further setting: and one side of the flange, which is far away from the mounting head, is provided with an operation notch which facilitates the disassembly of the supporting seat.

The utility model also provides an antenna, including moving the looks ware, still include foretell phase shift drive mechanism, threaded connection has the connecting piece on the drive screw, the connecting piece is connected with the drive and moves with the medium plate that moves in the looks ware with the pull rod that moves the looks ware.

Compared with the prior art, the utility model discloses a scheme has following advantage:

1. the utility model relates to an among the phase-shifting transmission mechanism, the supporting seat mountable is on the stationary barrier, and drive screw is located to its cover on to make supporting seat and drive screw follow drive screw's axial reciprocal anchorage with the help of stop gear, thereby provide for drive screw along its axial spacing, make pull rod resistance reaction force cut off in supporting seat department, avoid causing the influence to lead to motor internals to damage motor output shaft, also can improve the stability and the accuracy of adjusting of phase-shifting.

2. The utility model relates to an among the antenna, through adopting foretell phase shift drive mechanism, promoted the stability and the accuracy of phase shift accommodation process, promote the electricity performance of adjusting of antenna.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a phase shift transmission mechanism according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a phase shifting transmission mechanism according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a drive screw according to an embodiment of the present invention;

fig. 4 is a schematic structural view of the limit clip according to an embodiment of the present invention;

fig. 5 is a schematic view of an embodiment of a support base according to the present invention;

fig. 6 is a schematic view of another view angle of the supporting seat according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 and 2, the utility model provides a phase shift transmission mechanism, including drive screw 1 and supporting seat 2, drive screw 1

passes supporting seat

2 and 2 free rotations of supporting seat relatively, wherein, supporting seat 2 is used for with the fixed stay face reciprocal anchorage. Supporting seat 2 is equipped with along the axial front and back both sides of drive screw 1 and makes supporting seat 2 and drive screw 1 along axial reciprocal anchorage's stop gear, stop gear includes that at least one detachable connects spacing fastener 3 on drive screw 1, spacing fastener 3 makes supporting seat 2 along drive screw 1's axial reciprocal anchorage with one side butt of supporting seat 2.

Supporting seat 2 mountable is on the fixed stay surface, and on drive screw 1 was located to its cover to make supporting seat 2 and drive screw 1 along drive screw 1's axial reciprocal anchorage with the help of stop gear, thereby for drive screw 1 provides along its axial spacing, make pull rod resistance reaction force cut off in supporting seat 2 department, avoid causing the influence to motor output shaft and lead to motor internals to damage, also can improve and move phase stability and the accuracy of adjusting.

In this embodiment, the supporting seat 2 is installed at one end of the driving screw 1, and the end of the driving screw 1 where the supporting seat 2 is installed is a smooth cylindrical structure and can pass through the supporting seat 2 and rotate freely relative to the supporting seat 2. In this embodiment, only one end of the driving screw 1 is provided with the supporting seat 2, and in other embodiments, the supporting seats 2 may be provided at both ends of the driving screw 1.

As shown in fig. 3, furthermore, a limiting step 11 is disposed at one end of the transmission screw 1, the supporting seat 2 is sleeved on the transmission screw 1 and abuts against the limiting step 11, and the limiting clamping piece 3 is installed on one side of the supporting seat 2, which is far away from the limiting step 11, and forms axial limiting for the supporting seat 2 together with the limiting step 11.

In this embodiment, carry out common spacing through spacing step 11 and spacing fastener 3 to supporting seat 2 to make supporting seat 2 along drive screw 1's axial relatively fixed, the structure is comparatively simple, and processing is convenient, also has higher structural stability. In other embodiments, the limiting step 11 may not be provided, the limiting clamping pieces 3 may be installed on both sides of the supporting seat 2, and the supporting seat 2 is fixed by using the two limiting clamping pieces 3.

As shown in fig. 4, further, an annular clamping groove 12 is formed in one end of the transmission screw 1, where the supporting seat 2 is installed, along the circumferential direction, the limiting clamping piece 3 includes an annular clamping portion 31 which can elastically deform and is embedded in the annular clamping groove 12, and a deformation notch 32 is formed in the annular clamping portion 31.

Through such setting, but spacing fastener 3 utilizes elastic deformation's annular joint portion 31 cover to locate in annular groove 12, realizes spacing fastener 3 and drive screw 1's reciprocal anchorage to fix supporting seat 2. Utilize ring groove 12 both can provide fixed trench for spacing fastener 3, can provide the positioning action for spacing fastener 3 again, make supporting seat 2 and drive screw 1 realize fast assembly and dismantlement.

Further, a pin shaft 33 is formed at a position opposite to the deformation notch 32 on the inner wall of the annular clamping portion 31 in a protruding manner, and a pin hole 13 for the pin shaft 33 to penetrate is radially formed in the annular clamping groove 12 along the transmission screw 1. Preferably, one end of the pin 33 near the deformation notch 32 is frustum-shaped, so as to facilitate the insertion of the pin 33 into the pin hole 13. Through setting up round pin axle 33, round pin axle 33 can insert in drive screw 1's pinhole 13 to make spacing fastener 3 and drive screw 1 along circumference reciprocal anchorage, prevent that drive screw 1 from driving spacing fastener 3 to rotate when rotating relative supporting seat 2, improved spacing fastener 3 and drive screw 1's stability of being connected.

Further, one side of the annular clamping portion 31, which faces away from the pin 33, is provided with a deformation concave portion 311, and preferably, the deformation concave portion 311 is of an arc-shaped structure. Through setting up deformation concave position 311, make annular joint portion 31 be convenient for warp when the cover is established on drive screw 1, and difficult fracture takes place.

As shown in fig. 5 and fig. 6, the support base 2 further includes a mounting head 21 and a base 22, the mounting head 21 is provided with a mounting hole 211 for the transmission screw 1 to pass through for free rotation, and the base 22 is connected to the lower part of the mounting head 21 and is used for being connected and fixed with a fixed support surface. In the present embodiment, the mounting head 21 has a cylindrical shape, and the axial direction of the mounting head 21 extends in the horizontal direction. Preferably, the mounting head 21 and the base 22 are integrally formed.

In this embodiment, the bottom of the base 22 is provided with fastening holes 221 along the height direction for fasteners to penetrate so as to fix the supporting base 2 and the fixing support surface. Preferably, the fastening holes 221 are screw holes. In this embodiment, the bottom of the base 22 is provided with three fastening holes 221, and the three fastening holes 221 are linearly arranged in the middle of the base 22. In other embodiments, one, two, or more than three fastening holes 221 may be provided.

Through setting up the screw hole, both be convenient for the fastener if the screw penetrate with supporting seat 2 be fixed in the stationary barrier face on, the machine-shaping of being convenient for again improves machining efficiency, reduces the processing cost.

In other embodiments, the bottom of the base 22 may also be formed with a threaded post that may be threaded through a fixed support surface and secured by a nut.

Furthermore, the bottom of the base 22 is protruded with a positioning post 222 capable of penetrating into the positioning hole of the fixed supporting surface. In this embodiment, two positioning pillars 222 are disposed and respectively disposed at two sides of the fastening hole 221. By means of the matching of the positioning post 222 and the positioning hole, on one hand, the supporting seat 2 is easier to position when being assembled on a fixed supporting surface, and is convenient for mounting and fixing screws. On the other hand, the matching of the positioning column 222 and the positioning hole also improves the assembling reliability of the supporting seat 2 and the fixed supporting surface, and the influence of the resistance reaction force of the pull rod on the output shaft of the motor is effectively cut off.

Further, the bottom of the base 22 extends outward to form a flange 223. Preferably, the flange 223 is provided with an operation notch 2231 at a side away from the mounting head 21 for facilitating the removal of the support base 2. Through forming flange 223 in base 22 bottom, can increase the area of contact of supporting seat 2 and stationary supporting face, improve supporting seat 2's stability, can make supporting seat 2 and stationary supporting face paste tightly through pressing down flange 223 again when assembling with the stationary supporting face, promote the assembly reliability. In addition, by providing the operation notch 2231, it is possible to facilitate the extension of a finger or a tool into the operation notch 2231, and to separate the support base 2 from the fixed support surface, thereby improving the convenience of mounting and dismounting.

The utility model also provides an antenna, including moving the looks ware, still include foretell drive mechanism that moves phase, threaded connection has the connecting piece on the drive screw 1, the connecting piece is connected with the drive with the pull rod that moves the looks ware and moves with the medium plate that moves in the looks ware, changes each radiating element's phase place, and then changes the phase place of antenna.

To sum up, the utility model discloses a scheme has following advantage:

1. the utility model relates to an among the phase-shifting transmission mechanism, 2 mountable of supporting seat are on the fixed stay face, drive screw 1 is located to its cover, and make supporting seat 2 and drive screw 1 along drive screw 1's axial reciprocal anchorage with the help of stop gear, thereby for drive screw 1 provides along its axial spacing, make pull rod resistance reaction force cut off in supporting seat 2 department, avoid causing the influence to lead to motor internals to damage to motor output shaft, also can improve and shift stability and the accuracy of adjusting mutually.

The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The phase-shifting transmission mechanism comprises a transmission screw rod and is characterized in that: the supporting seat is provided with a limiting mechanism which enables the supporting seat and the transmission screw to be relatively fixed along the axial direction, the limiting mechanism comprises at least one limiting clamping piece which is detachably connected to the transmission screw, and the limiting clamping piece is abutted to one side of the supporting seat to enable the supporting seat to be relatively fixed along the axial direction of the transmission screw.

2. The phase shifting transmission mechanism according to claim 1, wherein: the supporting seat is sleeved on the transmission screw and abutted against the limiting step, and the limiting clamping piece is installed on one side, far away from the limiting step, of the supporting seat and forms axial limiting for the supporting seat together with the limiting step.

3. The phase shifting transmission mechanism according to claim 2, wherein: the transmission screw is provided with an annular clamping groove along the circumferential direction, the limiting clamping piece comprises an annular clamping portion which can elastically deform and is embedded into the annular clamping groove, and the annular clamping portion is provided with a deformation notch.

4. The phase shifting transmission mechanism according to claim 3, wherein: the inner wall of the annular clamping portion protrudes out of a position opposite to the deformation notch to form a pin shaft, and a pin hole for the pin shaft to penetrate through is radially formed in the annular clamping groove along the transmission screw.

5. The phase shifting transmission mechanism according to claim 1, wherein: the supporting seat comprises an installing head and a base, wherein an installing hole for a transmission screw to pass through and freely rotate is formed in the installing head, and the base is connected to the lower portion of the installing head and used for being fixedly connected with the fixed supporting surface.

6. The phase shifting transmission mechanism according to claim 5, wherein: the bottom of the base is provided with a fastening hole along the height direction, and a fastening piece can penetrate through the fastening hole to fix the supporting seat and the fixed supporting surface.

7. The phase shifting transmission mechanism according to claim 5, wherein: the bottom of the base is convexly provided with a positioning column which can penetrate into the positioning hole of the fixed supporting surface.

8. The phase shifting transmission mechanism according to claim 5, wherein: the bottom of the base extends outwards to form a flange.

9. The phase shifting transmission mechanism according to claim 8, wherein: and one side of the flange, which is far away from the mounting head, is provided with an operation notch which facilitates the disassembly of the supporting seat.

10. An antenna, comprising a phase shifter, characterized in that: the phase shifting transmission mechanism further comprises a phase shifting transmission mechanism according to any one of claims 1 to 9, wherein a connecting piece is connected to the transmission screw in a threaded mode and is connected with a pull rod of the phase shifter to drive a medium plate in the phase shifter to move.