Phase shifter phase adjustment device and base station antenna

Abstract

The application provides a phase shifter phase adjusting device and a base station antenna. The phase shifter phase adjusting device comprises a first screw rod, a first nut seat, a first bearing, a second screw rod, a first sliding sleeve and a second sliding sleeve. The first end of the first screw rod is drivingly connected to a driving unit. The first nut seat is screwed on the outside of the first screw rod. The inner ring of the first bearing is mounted on the first nut seat. The outer ring of the first bearing is mounted on the second screw rod. The second screw rod is slidably sleeved on the outside of the first screw rod. The first screw rod has a first guide groove on the outside. The second screw rod has a first guide rib on the inside. The first sliding sleeve is sleeved on the outside of the first screw rod. The second sliding sleeve is sleeved on the outside of the second screw rod. The second sliding sleeve is slidably sleeved in the first sliding sleeve. The first nut seat is fixedly connected to the second sliding sleeve. The first sliding sleeve has a first guide part on the inside. The second sliding sleeve has a second guide part on the outside. The phase shifter phase adjusting device and the base station antenna are compact in structure and small in space occupation.

Description

Technical Field

[0001] This invention relates to the field of base station antennas, and more particularly to a phase shifter phase adjustment device and a base station antenna. Background Technology

[0002] Currently, phase adjustment of dielectric phase shifters in base station antennas mainly adopts a screw and nut drive method. The screw is driven by a motor to rotate, thereby pushing the nut to move back and forth in a linear motion. At the same time, the nut is connected to the phase shifter to achieve phase adjustment of the phase shifter.

[0003] However, existing phase shifter phase adjustment methods have drawbacks such as large space requirements and insufficient structural compactness. Summary of the Invention

[0004] To address at least one of the problems mentioned in the background art, the present invention provides a phase shifter phase adjustment device and a base station antenna, which have a compact structure and small space occupation.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] In a first aspect, the present invention provides a phase adjustment device for a phase shifter. The adjustment device is configured to be installed on a base station antenna and is used to adjust the phase of the phase shifter of the base station antenna. The adjustment device includes a lead screw assembly, a sliding sleeve assembly, and a drive unit. The lead screw assembly includes a first lead screw, a first nut seat, a first bearing, and a second lead screw. The sliding sleeve assembly includes a first sliding sleeve and a second sliding sleeve.

[0007] The first end of the first lead screw is connected to the drive unit. The first nut seat is screwed onto the outside of the first lead screw. The inner ring of the first bearing is mounted on the first nut seat. The second lead screw has a hollow structure. The end of the second lead screw forms a first mounting part. The outer ring of the first bearing is mounted on the first mounting part. The second lead screw is slidably sleeved on the outside of the first lead screw. The outside of the first lead screw has a first guide groove extending along its own axial direction. The inside of the second lead screw has a first guide rib extending along its own axial direction. The first guide rib is slidably disposed in the first guide groove.

[0008] The first sliding sleeve is configured to be fixed on the base station antenna, and the first sliding sleeve covers the outside of the first lead screw. The second sliding sleeve covers the outside of the second lead screw. The second sliding sleeve is slidably fitted inside the first sliding sleeve. The first nut seat is fixedly connected to the inside of the second sliding sleeve. The inside of the first sliding sleeve has a first guide portion extending along its own axis. The outside of the second sliding sleeve has a second guide portion extending along its own axis. The first guide portion and the second guide portion are slidably engaged.

[0009] The drive unit is used to drive the first lead screw to rotate, so that the first nut seat moves along the surface of the first lead screw to realize the extension and retraction of the adjustment device, thereby adjusting the phase of the base station antenna phase shifter by extending and retracting the adjustment device.

[0010] As an optional implementation, the lead screw assembly further includes a connector, the first end of which is detachably connected to the drive unit along its own axial direction, and the second end of which is detachably connected to the first end of the first lead screw along its own axial direction.

[0011] As an optional implementation, the second end of the connector forms a first elastic snap-fit ​​portion. The lead screw includes a threaded section and a connecting section integrally formed along the axial direction. The connecting section is located at the first end of the lead screw. One end of the first sliding sleeve is rotatably fitted onto the connecting section. The first nut seat is screwed onto the threaded section. The cross-section of the end of the connecting section away from the threaded section is non-circular. The first elastic snap-fit ​​portion snaps onto the end of the connecting section away from the threaded section.

[0012] As an optional implementation, a limiting protrusion is formed at one end of the connecting section near the threaded section, and an annular mounting groove is provided on the connecting section. The first end of the first sliding sleeve is sleeved between the limiting protrusion and the annular mounting groove. The screw assembly also includes a limiting retaining ring, which is engaged in the annular mounting groove.

[0013] As an optional implementation, the lead screw assembly further includes a third lead screw, a second nut seat, and a second bearing. The sliding sleeve assembly further includes a third sliding sleeve. The second nut seat is threaded onto the outside of the second lead screw. The inner ring of the second bearing is mounted on the second nut seat. The third lead screw has a hollow structure. The end of the third lead screw forms a second mounting part. The outer ring of the second bearing is mounted on the second mounting part. The third lead screw is slidably sleeved on the outside of the second lead screw. The outside of the second lead screw has a second guide groove extending along its own axial direction. The inside of the third lead screw has a second guide rib extending along its own axial direction. The second guide rib is slidably disposed in the second guide groove.

[0014] The third sliding sleeve is installed outside the third lead screw. The third sliding sleeve is slidably fitted inside the second sliding sleeve. The second nut seat is fixedly connected to the inner side of the third sliding sleeve. The inner side of the second sliding sleeve has a third guide portion extending along its own axial direction. The outer side of the third sliding sleeve has a fourth guide portion extending along its own axial direction. The third guide portion and the fourth guide portion are slidably engaged.

[0015] As an optional implementation, the first guide portion and the third guide portion are guide groove structures, and the second guide portion and the fourth guide portion are guide rib structures.

[0016] As an optional implementation, the sliding sleeve assembly further includes a fourth sliding sleeve, which is slidably fitted inside the third sliding sleeve. The inner side of the third sliding sleeve has a fifth guide portion extending along its own axial direction, and the outer side of the fourth sliding sleeve has a sixth guide portion extending along its own axial direction. The fifth guide portion and the sixth guide portion are slidably engaged.

[0017] As an optional implementation, the sliding sleeve assembly further includes a cover plate, which is snapped onto the end of the fourth sliding sleeve away from the third sliding sleeve. The cover plate has a connecting portion for connecting to a base station antenna phase shifter, so as to pull the phase shifter for phase adjustment through the connecting portion.

[0018] In a second aspect, the present invention also provides a base station antenna, including a reflector, a phase shifter, a scale, and any one of the phase shifter phase adjustment devices in the first aspect. The phase shifter, the scale, and the adjustment device are all disposed on the reflector. One end of the adjustment device is connected to the phase shifter so as to adjust the phase of the phase shifter by extending and retracting the adjustment device. The scale is used to reflect the specific value of the phase adjustment of the phase shifter.

[0019] As an optional implementation, the outer side of the first sliding sleeve has a second elastic locking part, and the reflector plate has a slot, in which the second elastic locking part is locked.

[0020] The phase shifter adjustment device provided by this invention is configured to be installed on a base station antenna and used to adjust the phase of the base station antenna phase shifter. The adjustment device includes a lead screw assembly, a sliding sleeve assembly, and a drive unit. The lead screw assembly includes a first lead screw, a first nut seat, a first bearing, and a second lead screw. The sliding sleeve assembly includes a first sliding sleeve and a second sliding sleeve. The first end of the first lead screw is drivenly connected to the drive unit. The first nut seat is screwed onto the outside of the first lead screw. The inner ring of the first bearing is installed on the first nut seat. The second lead screw has a hollow structure. The end of the second lead screw forms a first mounting part. The outer ring of the first bearing is installed on the first mounting part. The second lead screw is slidably sleeved on the outside of the first lead screw. The outside of the first lead screw has a first guide groove extending along its own axial direction. The inner side has a first guide rib extending along its own axis, and the first guide rib is slidably disposed in the first guide groove; the first sliding sleeve is configured to be fixed on the base station antenna, and the first sliding sleeve covers the outside of the first lead screw, the second sliding sleeve covers the outside of the second lead screw, and the second sliding sleeve is slidably sleeved inside the first sliding sleeve; the first nut seat is fixedly connected to the inner side of the second sliding sleeve; the inner side of the first sliding sleeve has a first guide portion extending along its own axis, and the outer side of the second sliding sleeve has a second guide portion extending along its own axis; the first guide portion and the second guide portion are slidably engaged; the driving unit is used to drive the first lead screw to rotate, so that the first nut seat moves along the surface of the first lead screw, so as to realize the extension and retraction of the adjustment device, thereby adjusting the phase of the base station antenna phase shifter by extending and retracting the adjustment device.

[0021] When the phase shifter phase adjustment device provided by this invention performs phase adjustment, the driving unit can drive the first lead screw to rotate. Since the first lead screw is engaged with the first guide rib on the second lead screw through the first guide groove, the second lead screw rotates together with the first lead screw. Since the first nut seat is threaded to the outside of the first lead screw and is fixedly connected to the second sliding sleeve, when the first lead screw rotates, the first nut seat will move along the axial direction of the first lead screw. The second sliding sleeve slides axially under the drive of the first nut seat, so that the first and second sliding sleeves form a telescopic movement. At the same time, since the inner and outer rings of the first bearing are respectively installed on the first nut seat and the second lead screw, the first nut seat will also synchronously drive the second lead screw to move axially, so that the first and second lead screws form a telescopic movement, thereby forming the telescopic movement of the entire adjustment device. The adjustment device can be connected to the phase shifter on the base station antenna, so that the phase of the phase shifter can be adjusted by the telescopic movement of the adjustment device. The phase shifter phase adjustment device provided by this invention can perform telescopic adjustment, so that the structure is more compact and occupies less space while ensuring adjustment accuracy. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the phase shifter phase adjustment device provided in an embodiment of the present invention;

[0024] Figure 2 for Figure 1 Top view;

[0025] Figure 3 for Figure 2 Sectional view at point AA;

[0026] Figure 4 This is a schematic diagram of the lead screw assembly in the phase adjustment device of the phase shifter provided in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the sliding sleeve assembly in the phase adjustment device of the phase shifter provided in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the first lead screw in the phase adjustment device of the phase shifter provided in an embodiment of the present invention;

[0029] Figure 7A schematic diagram of a first structure of the second lead screw in the phase adjustment device of the phase shifter provided in an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of a second structure of the second lead screw in the phase adjustment device of the phase shifter provided in an embodiment of the present invention.

[0031] Figure 9 This is a schematic diagram of the connecting component in the phase adjustment device of the phase shifter provided in an embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram of the structure of a base station antenna provided in an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100 - Adjustment device;

[0035] 110 - Lead screw assembly;

[0036] 111-First lead screw; 1111-First guide groove; 1112-Limiting protrusion; 1113-Annular mounting groove; 112-First nut seat; 113-First bearing; 114-Second lead screw; 1141-First guide rib; 1142-First mounting part; 1143-Second guide groove; 115-Connector; 1151-First elastic snap-fit ​​part; 116-Limiting retaining ring; 117-Third lead screw; 118-Second nut seat; 119-Second bearing;

[0037] 120 - Sliding sleeve assembly;

[0038] 121-First sliding sleeve; 1211-First guide part; 1212-Second elastic snap-fit ​​part; 122-Second sliding sleeve; 1221-Second guide part; 1222-Third guide part; 123-Third sliding sleeve; 1231-Fourth guide part; 1232-Fifth guide part; 124-Fourth sliding sleeve; 1241-Sixth guide part; 125-Cover plate; 1251-Connecting part;

[0039] 200-Base station antenna;

[0040] 210 - Reflector; 220 - Phase shifter; 230 - Scale. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] In this application, the terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” “outer,” “vertical,” “horizontal,” “lateral,” and “longitudinal” indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or to be constructed and operated in a specific orientation.

[0043] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0044] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0045] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0046] In base stations, phase adjustment of the medium phase shifter mainly employs a screw-nut drive system. A motor drives the screw to rotate, which in turn pushes the nut back and forth in a linear motion. Simultaneously, the nut is connected to the phase shifter, thus adjusting its phase. However, existing phase shifter adjustment methods suffer from drawbacks such as large space requirements and insufficient structural compactness.

[0047] In view of this, the present invention provides a phase shifter phase adjustment device, including a lead screw assembly, a sliding sleeve assembly, and a drive unit. The lead screw assembly includes a first lead screw, a first nut seat, a first bearing, and a second lead screw. The sliding sleeve assembly includes a first sliding sleeve and a second sliding sleeve. The first end of the first lead screw is drively connected to the drive unit. The first nut seat is screwed onto the outside of the first lead screw. The inner ring of the first bearing is mounted on the first nut seat. The second lead screw has a hollow structure, and the end of the second lead screw forms a first mounting portion. The outer ring of the first bearing is mounted on the first mounting portion. The second lead screw is slidably sleeved outside the first lead screw. The first lead screw has a first guide groove outside and a first guide rib inside the second lead screw, which is slidably disposed within the first guide groove. The first sliding sleeve is configured to be fixed on the base station antenna and covers the first lead screw. The second sliding sleeve covers the second lead screw and is slidably sleeved inside the first sliding sleeve. A first nut seat is fixedly connected to the inner side of the second sliding sleeve. A first guide portion is inside the first sliding sleeve, and a second guide portion is outside the second sliding sleeve. The first guide portion and the second guide portion are slidably engaged. During phase adjustment, the drive unit can drive the first lead screw to rotate, and the second lead screw rotates together with the first lead screw. The first nut seat moves along the axial direction of the first lead screw, thereby driving the second sliding sleeve and the second lead screw to slide axially, thus forming the telescopic movement of the entire adjustment device. The adjustment device can be connected to the phase shifter on the base station antenna, thereby adjusting the phase of the phase shifter through the telescopic movement of the adjustment device. The phase shifter phase adjustment device provided by the present invention can perform telescopic adjustment, thus making the structure more compact and occupying less space while ensuring adjustment accuracy.

[0048] Figure 1 This is a schematic diagram of the overall structure of the phase shifter phase adjustment device provided in an embodiment of the present invention; Figure 2 for Figure 1 Top view; Figure 3 for Figure 2 Sectional view at point AA; Figure 4 This is a schematic diagram of the lead screw assembly in the phase adjustment device of the phase shifter provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the sliding sleeve assembly in the phase adjustment device of the phase shifter provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the first lead screw in the phase adjustment device of the phase shifter provided in an embodiment of the present invention; Figure 7 A schematic diagram of a first structure of the second lead screw in the phase adjustment device of the phase shifter provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of a second structure of the second lead screw in the phase adjustment device of the phase shifter provided in an embodiment of the present invention. Figure 9 This is a schematic diagram of the connecting component in the phase adjustment device of the phase shifter provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of a base station antenna provided in an embodiment of the present invention.

[0049] You can refer to this. Figures 1 to 10 This invention provides a phase shifter adjustment device 100, which is configured to be mounted on a base station antenna 200. The adjustment device 100 is used to adjust the phase of the base station antenna phase shifter. The adjustment device 100 includes a lead screw assembly 110, a sliding sleeve assembly 120, and a drive unit. The lead screw assembly 110 includes a first lead screw 111, a first nut seat 112, a first bearing 113, and a second lead screw 114. The sliding sleeve assembly 120 includes a first sliding sleeve 121 and a second sliding sleeve 122. The first end of the first lead screw 111 is connected to the drive unit. The first nut seat 112 is screwed onto the outside of the first lead screw 111. The inner ring of the first bearing 113 is mounted on the first nut seat 112. The second lead screw 114 is a hollow structure. The end of the second lead screw 114 forms a first mounting part 1142. The outer ring of the first bearing 113 is mounted on the first mounting part 1142. The second lead screw 114 is slidably sleeved on the outside of the first lead screw 111. The first lead screw 111 has a first guide extending along its own axial direction. The first guide rib 1141 extends axially along the inner side of the first guide groove 1111. The first guide rib 1141 is slidably disposed within the first guide groove 1111. The first sliding sleeve 121 is configured to be fixed to the base station antenna 200 and covers the first lead screw 111. The second sliding sleeve 122 covers the second lead screw 114 and is slidably fitted inside the first sliding sleeve 121. The first nut seat 112 is fixedly connected inside the second sliding sleeve 122. On the side, the inner side of the first sliding sleeve 121 has a first guide portion 1211 extending along its own axial direction, and the outer side of the second sliding sleeve 122 has a second guide portion 1221 extending along its own axial direction. The first guide portion 1211 and the second guide portion 1221 are slidably engaged. The driving unit is used to drive the first lead screw 111 to rotate so that the first nut seat 112 moves along the surface of the first lead screw 111 to realize the extension and retraction of the adjustment device 100, thereby adjusting the phase of the base station antenna phase shifter by the extension and retraction of the adjustment device 100.

[0050] It should be noted that, as Figure 7 and Figure 8 As shown, the second lead screw 114 may have a central hole along the axial direction, and the first lead screw 111 may extend into the central hole of the second lead screw 114. The wall of the central hole has a first guide rib 1141 structure. The first mounting part 1142 may be an annular groove structure as shown in the figure. The diameter of the annular groove is larger than the diameter of the threaded part of the second lead screw 114, so that the outer ring of the first bearing 113 can be stably mounted in the annular groove.

[0051] The first guide section 1211 and the third guide section 1222 can be as follows: Figure 5 The guide groove structure shown can have the second guide portion 1221 and the fourth guide portion 1231 as follows: Figure 5 The guide rib structure shown.

[0052] When the phase shifter phase adjustment device 100 provided in this embodiment of the invention performs phase adjustment, the driving unit can drive the first lead screw 111 to rotate. Since the first lead screw 111 is engaged with the first guide rib 1141 on the second lead screw 114 through the first guide groove 1111, the second lead screw 114 rotates together with the first lead screw 111. Since the first nut seat 112 is threaded to the outside of the first lead screw 111 and is fixedly connected to the second sliding sleeve 122, when the first lead screw 111 rotates, the first nut seat 112 will move along the axial direction of the first lead screw 111, and the second sliding sleeve 122 will slide axially under the drive of the first nut seat 112, so that the first sliding sleeve 121 and the second sliding sleeve 122 form a telescopic action (the second sliding sleeve 122 retracts into the first sliding sleeve 121, or the second sliding sleeve 122 moves from the first lead screw 111 to the second sliding sleeve 122). (Extending from a sliding sleeve 121), and simultaneously, since the inner and outer rings of the first bearing 113 are respectively mounted on the first nut seat 112 and the second lead screw 114, the first nut seat 112 will also synchronously drive the second lead screw 114 to move axially, so that the first lead screw 111 and the second lead screw 114 form a telescopic action (the first lead screw 111 retracts into the second lead screw 114, or the first lead screw 111 extends out from the second lead screw 114), thereby forming the telescopic movement of the entire adjustment device 100. The adjustment device 100 can be connected to the phase shifter 220 on the base station antenna 200, so that the phase of the phase shifter 220 can be adjusted by the telescopic action of the adjustment device 100. The phase shifter phase adjustment device 100 provided in this embodiment of the invention can be telescopically adjusted, thereby making the structure more compact and occupying less space while ensuring adjustment accuracy.

[0053] In the above embodiments, the lead screw assembly 110 may further include a connector 115. The first end of the connector 115 along its own axial direction is detachably connected to the drive unit, and the second end of the connector 115 along its own axial direction is detachably connected to the first end of the first lead screw 111. The connector 115 enables rapid connection and disconnection of the drive unit and the first lead screw 111.

[0054] like Figure 9As shown in the above embodiment, the second end of the connector 115 can form a first elastic locking portion 1151. The lead screw can include a threaded section and a connecting section integrally formed along the axial direction. The connecting section is located at the first end of the lead screw. One end of the first sliding sleeve 121 is rotatably sleeved on the connecting section. The first nut seat 112 is screwed onto the threaded section. The cross-section of the end of the connecting section away from the threaded section is non-circular. The first elastic locking portion 1151 is locked onto the end of the connecting section away from the threaded section. When making the transmission connection between the connector 115 and the first lead screw 111, it is only necessary to lock the first elastic locking portion 1151 on the connector 115 onto the end of the connecting section of the first lead screw 111. Since the end of the connecting section is a non-circular structure, the synchronous rotation of the connector 115 and the first lead screw 111 can be achieved.

[0055] like Figure 6 As shown in the above embodiment, a limiting protrusion 1112 can be formed at one end of the connecting section near the threaded section. The connecting section has an annular mounting groove 1113. The first end of the first sliding sleeve 121 is sleeved between the limiting protrusion 1112 and the annular mounting groove 1113. The lead screw assembly 110 also includes a limiting retaining ring 116, which is engaged in the annular mounting groove 1113. The limiting protrusion 1112 and the limiting retaining ring 116 can limit the axial installation position of the first sliding sleeve 121 on the first lead screw 111, thereby improving the stability of the adjusting device 100. The limiting retaining ring 116 has an opening to facilitate its installation.

[0056] In the above embodiments, the lead screw assembly 110 may further include a third lead screw 117, a second nut seat 118, and a second bearing 119. The sliding sleeve assembly 120 may further include a third sliding sleeve 123. The second nut seat 118 is threaded onto the outside of the second lead screw 114. The inner ring of the second bearing 119 is mounted on the second nut seat 118. The third lead screw 117 has a hollow structure, and the end of the third lead screw 117 forms a second mounting portion. The outer ring of the second bearing 119 is mounted on the second mounting portion. The third lead screw 117 is slidably sleeved onto the outside of the second lead screw 114. The second lead screw 114 has a second guide extending along its own axial direction. The second guide groove 1143 has a second guide rib extending axially on its inner side, which is slidably disposed within the second guide groove 1143. A third sliding sleeve 123 covers the third lead screw 117 and is slidably fitted within a second sliding sleeve 122. A second nut seat 118 is fixedly connected to the inner side of the third sliding sleeve 123. The inner side of the second sliding sleeve 122 has a third guide portion 1222 extending axially, and the outer side of the third sliding sleeve 123 has a fourth guide portion 1231 extending axially. The third guide portion 1222 and the fourth guide portion 1231 are slidably engaged. It can be understood that the operating principle of the third sliding sleeve 123 and the third lead screw 117 is similar to that of the second sliding sleeve 122 and the second lead screw 114, and will not be elaborated further here. By setting the third sliding sleeve 123 and the third lead screw 117, the extension and retraction range of the adjusting device 100 can be increased, making the device structure more compact.

[0057] like Figure 5 As shown in the embodiment, the sliding sleeve assembly 120 may further include a fourth sliding sleeve 124, which is slidably fitted inside the third sliding sleeve 123. The inner side of the third sliding sleeve 123 has a fifth guide portion 1232 extending along its own axial direction, and the outer side of the fourth sliding sleeve 124 has a sixth guide portion 1241 extending along its own axial direction. The fifth guide portion 1232 and the sixth guide portion 1241 are slidably engaged. By providing the fourth sliding sleeve 124, the reliability of the extension and retraction of the adjusting device 100 can be improved.

[0058] In addition, the sliding sleeve assembly 120 may also include a cover plate 125, which is snapped onto the end of the fourth sliding sleeve 124 away from the third sliding sleeve 123. The cover plate 125 has a connecting portion 1251 for connecting with the base station antenna phase shifter, so as to pull the phase shifter 220 for phase adjustment through the connecting portion 1251. The cover plate 125 can seal the adjustment device 100 to prevent external dust and impurities from entering the lead screw and bearings and affecting their operation. The connecting portion 1251 facilitates the connection between the adjustment device 100 and the phase shifter 220.

[0059] The phase shifter adjustment device 100 provided in this embodiment of the invention is configured to be installed on a base station antenna 200 and used to adjust the phase of the base station antenna phase shifter. The adjustment device 100 includes a lead screw assembly 110, a sliding sleeve assembly 120, and a drive unit. The lead screw assembly 110 includes a first lead screw 111, a first nut seat 112, a first bearing 113, and a second lead screw 114. The sliding sleeve assembly 120 includes a first sliding sleeve 121 and a second sliding sleeve 122. The first end of the first lead screw 111... The transmission is connected to the drive unit. The first nut seat 112 is screwed onto the outside of the first lead screw 111. The inner ring of the first bearing 113 is mounted on the first nut seat 112. The second lead screw 114 has a hollow structure, and the end of the second lead screw 114 forms a first mounting part 1142. The outer ring of the first bearing 113 is mounted on the first mounting part 1142. The second lead screw 114 is slidably sleeved on the outside of the first lead screw 111. The first lead screw 111 has a first guide groove 1111 extending along its own axial direction. The inner side of the second lead screw 114 has a first guide rib 1141 extending along its own axial direction, and the first guide rib 1141 is slidably disposed in the first guide groove 1111; the first sliding sleeve 121 is configured to be fixed on the base station antenna 200, and the first sliding sleeve 121 covers the first lead screw 111; the second sliding sleeve 122 covers the second lead screw 114, and the second sliding sleeve 122 is slidably sleeved inside the first sliding sleeve 121; the first nut seat 112 is fixedly connected to the inner side of the second sliding sleeve 122. The inner side of the sliding sleeve 121 has a first guide portion 1211 extending along its own axial direction, and the outer side of the second sliding sleeve 122 has a second guide portion 1221 extending along its own axial direction. The first guide portion 1211 and the second guide portion 1221 are slidably engaged. The driving unit is used to drive the first lead screw 111 to rotate so that the first nut seat 112 moves along the surface of the first lead screw 111 to realize the extension and retraction of the adjusting device 100, thereby adjusting the phase of the base station antenna phase shifter by extending and retracting the adjusting device 100.

[0060] When the phase shifter phase adjustment device 100 provided in this embodiment of the invention performs phase adjustment, the driving unit can drive the first lead screw 111 to rotate. Since the first lead screw 111 is engaged with the first guide rib 1141 on the second lead screw 114 through the first guide groove 1111, the second lead screw 114 rotates together with the first lead screw 111. Since the first nut seat 112 is threaded to the outside of the first lead screw 111 and is fixedly connected to the second sliding sleeve 122, when the first lead screw 111 rotates, the first nut seat 112 will move along the axial direction of the first lead screw 111, and the second sliding sleeve 122 will slide axially under the drive of the first nut seat 112, so that the first sliding sleeve 121 and the second sliding sleeve 122 slide axially. The sleeve 122 forms a telescopic movement. Simultaneously, since the inner and outer rings of the first bearing 113 are respectively mounted on the first nut seat 112 and the second lead screw 114, the first nut seat 112 will also synchronously drive the second lead screw 114 to move axially, so that the first lead screw 111 and the second lead screw 114 form a telescopic movement, thereby forming the telescopic movement of the entire adjustment device 100. The adjustment device 100 can be connected to the phase shifter 220 on the base station antenna 200, so that the phase of the phase shifter 220 can be adjusted by the telescopic movement of the adjustment device 100. The phase shifter phase adjustment device 100 provided in this embodiment of the invention can be telescopically adjusted, thereby making the structure more compact and occupying less space while ensuring adjustment accuracy.

[0061] Furthermore, this embodiment of the invention also provides a base station antenna 200, which includes a reflector 210, a phase shifter 220, a scale 230, and any one of the phase shifter phase adjustment devices 100 described in the above embodiments. The phase shifter 220, the scale 230, and the adjustment device 100 are all disposed on the reflector 210. One end of the adjustment device 100 is connected to the phase shifter 220 to adjust the phase of the phase shifter 220 by extending or retracting the adjustment device 100. The scale 230 is used to reflect the specific value of the phase adjustment of the phase shifter 220. Because the adjustment device 100 has a more compact structure, the overall volume of the base station antenna 200 can be reduced. The scale 230 can extend along the length of the adjustment device 100, and different extension lengths of the adjustment device 100 correspond to different scales on the scale 230, specifically corresponding to different phase degrees of the phase shifter 220.

[0062] In the above embodiment, the outer side of the first sliding sleeve 121 may have a second elastic snap-fit ​​part 1212, and the reflector plate 210 has a slot. The second elastic snap-fit ​​part 1212 snaps into the slot. By snapping the second elastic snap-fit ​​part 1212 into the slot, the adjustment device 100 can be quickly installed and removed from the reflector plate 210 of the base station antenna 200, which facilitates the maintenance of the base station antenna 200 in the future.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A phase shifter phase adjustment device, characterized in that, The adjustment device is configured to be installed on a base station antenna. The adjustment device is used to adjust the phase of the phase shifter of the base station antenna. The adjustment device includes a lead screw assembly, a sliding sleeve assembly, and a drive unit. The lead screw assembly includes a first lead screw, a first nut seat, a first bearing, and a second lead screw. The sliding sleeve assembly includes a first sliding sleeve and a second sliding sleeve. The first end of the first lead screw is connected to the drive unit. The first nut seat is screwed onto the outside of the first lead screw. The inner ring of the first bearing is mounted on the first nut seat. The second lead screw has a hollow structure. The end of the second lead screw forms a first mounting part. The outer ring of the first bearing is mounted on the first mounting part. The second lead screw is slidably sleeved on the outside of the first lead screw. The outside of the first lead screw has a first guide groove extending along its own axial direction. The inside of the second lead screw has a first guide rib extending along its own axial direction. The first guide rib is slidably disposed in the first guide groove. The first sliding sleeve is configured to be fixed on the base station antenna, and the first sliding sleeve covers the outside of the first lead screw, the second sliding sleeve covers the outside of the second lead screw, the second sliding sleeve is slidably sleeved inside the first sliding sleeve, the first nut seat is fixedly connected to the inner side of the second sliding sleeve, the inner side of the first sliding sleeve has a first guide portion extending along its own axis, the outer side of the second sliding sleeve has a second guide portion extending along its own axis, and the first guide portion and the second guide portion are slidably engaged; The drive unit is used to drive the first lead screw to rotate, so that the first nut seat moves along the surface of the first lead screw to realize the extension and retraction of the adjustment device, thereby adjusting the phase of the base station antenna phase shifter by the extension and retraction of the adjustment device.

2. The phase shifter phase adjustment device according to claim 1, characterized in that, The lead screw assembly further includes a connector, the first end of which is detachably connected to the drive unit along its own axial direction, and the second end of which is detachably connected to the first end of the first lead screw along its own axial direction.

3. The phase shifter phase adjustment device according to claim 2, characterized in that, The second end of the connector forms a first elastic locking portion. The lead screw includes a threaded section and a connecting section integrally formed along the axial direction. The connecting section is located at the first end of the lead screw. One end of the first sliding sleeve is rotatably fitted onto the connecting section. The first nut seat is screwed onto the threaded section. The cross-section of the end of the connecting section away from the threaded section is non-circular. The first elastic locking portion is locked onto the end of the connecting section away from the threaded section.

4. The phase shifter phase adjustment device according to claim 3, characterized in that, A limiting protrusion is formed at one end of the connecting segment near the threaded segment. The connecting segment has an annular mounting groove. The first end of the first sliding sleeve is sleeved between the limiting protrusion and the annular mounting groove. The lead screw assembly also includes a limiting retaining ring, which is engaged in the annular mounting groove.

5. The phase shifter phase adjustment device according to claim 4, characterized in that, The lead screw assembly further includes a third lead screw, a second nut seat, and a second bearing. The sliding sleeve assembly further includes a third sliding sleeve. The second nut seat is threaded onto the outside of the second lead screw. The inner ring of the second bearing is mounted on the second nut seat. The third lead screw has a hollow structure. The end of the third lead screw forms a second mounting part. The outer ring of the second bearing is mounted on the second mounting part. The third lead screw is slidably sleeved on the outside of the second lead screw. The outside of the second lead screw has a second guide groove extending along its own axial direction. The inside of the third lead screw has a second guide rib extending along its own axial direction. The second guide rib is slidably disposed in the second guide groove. The third sliding sleeve is disposed outside the third lead screw, and the third sliding sleeve is slidably sleeved inside the second sliding sleeve. The second nut seat is fixedly connected to the inner side of the third sliding sleeve. The inner side of the second sliding sleeve has a third guide portion extending along its own axial direction, and the outer side of the third sliding sleeve has a fourth guide portion extending along its own axial direction. The third guide portion and the fourth guide portion are slidably engaged.

6. The phase shifter phase adjustment device according to claim 5, characterized in that, The first guide portion and the third guide portion are guide groove structures, and the second guide portion and the fourth guide portion are guide rib structures.

7. The phase shifter phase adjustment device according to claim 6, characterized in that, The sliding sleeve assembly further includes a fourth sliding sleeve, which is slidably fitted inside the third sliding sleeve. The inner side of the third sliding sleeve has a fifth guide portion extending along its own axial direction, and the outer side of the fourth sliding sleeve has a sixth guide portion extending along its own axial direction. The fifth guide portion and the sixth guide portion are slidably engaged.

8. The phase shifter phase adjustment device according to claim 7, characterized in that, The sliding sleeve assembly further includes a cover plate, which is snapped onto the end of the fourth sliding sleeve away from the third sliding sleeve. The cover plate has a connecting portion for connecting to a base station antenna phase shifter, so as to pull the phase shifter for phase adjustment through the connecting portion.

9. A base station antenna, characterized in that, The device includes a reflector, a phase shifter, a scale, and a phase shifter phase adjustment device as described in any one of claims 1-8. The phase shifter, the scale, and the adjustment device are all disposed on the reflector. One end of the adjustment device is connected to the phase shifter to adjust the phase of the phase shifter by extending or retracting the adjustment device. The scale is used to reflect the specific value of the phase shifter phase adjustment.

10. The base station antenna according to claim 9, characterized in that, The outer side of the first sliding sleeve has a second elastic locking part, and the reflector plate has a slot, in which the second elastic locking part is locked.

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