phase shifter

Abstract

The application discloses a phase shifter, which comprises a cavity, a dielectric plate assembly and a transmission mechanism. The dielectric plate assembly is accommodated in the cavity, and the dielectric plate assembly is connected with the transmission mechanism through a flexible piece. The flexible piece is displaced under the drive of the transmission mechanism, and then the dielectric plate assembly is displaced relative to the cavity. In the application, the transmission mechanism can directly drive the dielectric plate assembly to move through the flexible piece, and it is not necessary to set a complex slot structure on the cavity to drive the dielectric plate assembly to move, so that signal loss is reduced to a certain extent, PIM is avoided, and the use performance of the phase shifter is improved.

Description

Technical Field

[0001] This invention relates to the field of mobile communication technology, and more particularly to a phase shifter. Background Technology

[0002] In mobile communication network coverage, electrically tunable antennas are one of the key devices for the coverage network, and phase shifters are the most crucial components of electrically tunable antennas. The performance of phase shifters directly determines the performance of electrically tunable antennas, and thus affects the quality of network coverage.

[0003] Typically, a phase shifter works by moving the medium inside its cavity to change the propagation rate of a signal within the phase shifter, thus creating a continuous phase difference in the output signal and achieving the purpose of phase shifting.

[0004] Currently, most phase shifters require slots to be machined into the cavity. An ESC motor, connected by a pull rod, rack and pinion gear, or worm gear, moves the dielectric substrate through these slots, allowing it to enter and exit the cavity. On one hand, the slots easily cause signal loss, affecting the phase shifter's performance. On the other hand, machining these slots can also easily create burrs, leading to PIM (Passive Intermodulation) and signal interference.

[0005] Therefore, how to improve the technical defects existing in the prior art has always been a problem that ordinary people skilled in the art need to solve. Summary of the Invention

[0006] The purpose of this invention is to provide a phase shifter that eliminates the need for slotted structures within the cavity for the transmission mechanism to move the dielectric substrate assembly, thereby effectively reducing signal leakage.

[0007] The technical solution provided by this invention is as follows:

[0008] A phase shifter, comprising:

[0009] Cavity, dielectric plate assembly, and transmission mechanism;

[0010] The medium plate assembly is housed inside the cavity, and the medium plate assembly is connected to the transmission mechanism via a flexible member;

[0011] The flexible component is displaced under the drive of the transmission mechanism, which in turn causes the medium plate assembly to be displaced relative to the cavity.

[0012] In some embodiments, the cavity is provided with a guide at both ends along its length;

[0013] The dielectric plate assembly and the flexible component together form a ring structure, or the dielectric plate assembly, the flexible component, and the transmission mechanism together form a ring structure;

[0014] The flexible component is fitted onto the two guide components.

[0015] In some embodiments, the dielectric substrate assembly includes a plurality of dielectric substrates, and the plurality of dielectric substrates are connected end to end in sequence;

[0016] The dielectric plates located at both ends have a fixing block at one end that is far apart from the other. The fixing block has an installation position for fixing the flexible element, and the installation position has an opening. The end of the flexible element connected to the dielectric plate has a slot, so that the end of the flexible element connected to the dielectric plate can deform under external force.

[0017] The flexible component is provided with a locking block at one end connected to the medium plate, which is adapted to abut against the end of the fixing block facing the medium plate to fix the flexible component to the fixing block.

[0018] In some embodiments, the transmission mechanism includes a pull rod and an electric speed control motor that drives the pull rod to move;

[0019] The flexible component includes a first portion and a second portion;

[0020] One end of the first portion is fixed to the dielectric plate assembly, and the other end of the first portion is fixed to one end of the pull rod; and one end of the second portion is fixed to the dielectric plate assembly, and the other end of the second portion is fixed to the end of the pull rod away from the first portion.

[0021] In some embodiments, the first portion and the pull rod are fixedly connected by an adapter, and the adapter is connected to the electric speed control motor; and

[0022] The second section and the pull rod are fixedly connected by a fixed terminal.

[0023] In some embodiments, the adapter includes a first mating portion and a second mating portion that are fixedly connected;

[0024] The first docking portion is provided with a first groove for accommodating the flexible member and the pull rod, and the opening edge of the first groove extends with a first boss at both ends in a direction that approaches each other, perpendicular to the length direction of the pull rod; and the cavity at one end facing the first docking portion extends with a second boss on both sides in a direction that moves away from each other, perpendicular to the length direction of the pull rod, the second boss being engaged in the first groove and abutting against the first boss.

[0025] The first groove is provided with a first locking platform, and both the flexible component and the pull rod are provided with a first fixing hole. The first locking platform passes through the first fixing hole on the flexible component and the pull rod in sequence.

[0026] The second docking part is used to connect the ESC motor. When the ESC motor drives the second docking part to move, the first docking part, which is fixedly connected to the second docking part, slides on the cavity along the length direction of the second boss. Thus, through the cooperation of the first locking platform and the first fixing hole, the flexible member and the pull rod are moved, thereby driving the plurality of medium plates to move.

[0027] In some embodiments, the pull rod has a third boss extending along its own length on the side facing the first mating portion; and

[0028] The bottom of the first groove is provided with a second groove that matches the contour of the third boss. The third boss presses the flexible part into the second groove. The second groove is used to restrict the translation of the flexible part and the pull rod relative to the first docking part.

[0029] The second docking part is provided with a plurality of second fixing holes, and the electric motor is provided with a plurality of pins that can pass through the second fixing holes; and

[0030] The ESC motor is provided with several buckles. When the pin passes through the second fixing hole, the buckles engage with the edge of the second mating part to fix the ESC motor and the adapter.

[0031] In some embodiments, a tensioning wheel is provided on the side of the cavity facing the pull rod to keep the flexible element taut;

[0032] and / or

[0033] The guide component is a guide wheel.

[0034] In some embodiments, the cavity is provided with a fixed seat on the side facing the pull rod, and a bracket is provided on the fixed seat, and the tension wheel is rotatably fixed to the bracket.

[0035] In some embodiments, a step is provided between the fixed base and the bracket, and the side of the step facing the bracket is a slope. The tensioning effect of the tensioning wheel on the flexible component is adjusted by adjusting the slope of the step.

[0036] The technical advantages of this invention are as follows:

[0037] 1. In this patent, the dielectric substrate assembly is housed inside the cavity, allowing the electric field to radiate energy outward from within the cavity, thus improving the quality of network coverage. Furthermore, the transmission mechanism in this patent can directly move the dielectric substrate assembly via a flexible component, eliminating the need for complex slot structures on the cavity for the transmission mechanism to move the dielectric substrate assembly. This avoids signal loss caused by slots machined into the cavity for the transmission mechanism to move the dielectric substrate assembly, as well as PIM caused by burrs generated during the machining of these slots, ensuring the performance of the phase shifter.

[0038] 2. In this patent, the dielectric substrate assembly, the flexible component, and the transmission mechanism, or the dielectric substrate assembly and the flexible component, together form a closed-loop whole and are fitted onto two guide components provided within the cavity. This ensures that the dielectric substrate does not detach from the cavity during movement, thereby effectively reducing signal leakage from the phase shifter output and allowing the electric field to radiate energy outward from within the cavity, thus improving the quality of network coverage.

[0039] 3. In this patent, the second protrusion is positioned within the first groove and engages with it. This, to a certain extent, restricts the movement of the flexible component and the pull rod along the depth of the first groove, preventing them from detaching from the first protrusion within the first groove. This ensures a stable connection between the pull rod and the flexible component, resulting in better consistency in the movement of the medium plate and the pull rod. Simultaneously, a second groove is provided within the first groove. The third protrusion on the pull rod presses the flexible component into the second groove, restricting its movement in the groove width and length directions. This prevents the flexible component and the pull rod from translating relative to the first mating part. Thus, the ESC motor can precisely control the displacement of the pull rod and the flexible component, achieving extremely high adjustment accuracy.

[0040] 4. In this patent, a second fixing hole is provided on the second docking part, and a pin and a buckle are provided on the electric motor. The pin passes through the second fixing hole for positioning, and the buckle is engaged with the edge of the second docking part for fixing. No additional installation parts are required, and the installation is quick, convenient, and highly practical.

[0041] 5. In this patent, the fixing block has an installation station for fixing the flexible component, and this installation station has an opening; simultaneously, the end of the flexible component that connects to the medium plate has a slot. Thus, the user only needs to press the slotted portion of the flexible component to deform it, allowing the flexible component to enter the installation station through the opening. At this point, the user can release their hand, and the flexible component will be stably fixed in the installation station. Conversely, when the user presses the slotted portion of the flexible component, the flexible component can be moved out of the installation station. The entire assembly and disassembly process is very simple, requiring no additional installation parts, making it convenient to operate and highly practical.

[0042] 6. In this patent, by setting a tensioning wheel, the flexible part can be kept in a taut state. In this way, when the ESC motor drives the pull rod to move, the flexible part can promptly drive the medium plate to move, resulting in high adjustment accuracy. Attached Figure Description

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0044] Figure 1 This is a three-dimensional structural schematic diagram of the phase shifter provided in one embodiment of the present invention;

[0045] Figure 2 yes Figure 1 A partially exploded schematic diagram of the provided phase shifter;

[0046] Figure 3 This is a structural schematic diagram of the tie rod, flexible component, and adapter provided by the present invention;

[0047] Figure 4 This is an installation diagram of the tie rod, flexible component, and adapter provided by the present invention;

[0048] Figure 5 This is a schematic diagram of the adapter and ESC motor provided by the present invention.

[0049] Figure 6 This is a schematic diagram of the structure of the flexible component, dielectric plate, and fixing block provided by the present invention;

[0050] Figure 7 This is a three-dimensional structural schematic diagram of the phase shifter provided in another embodiment of the present invention;

[0051] Figure 8 yes Figure 7 A partial plan view of the phase shifter is provided.

[0052] Explanation of icon numbers:

[0053] 100. Cavity; 110. Guide wheel; 120. Partition; 130. Second boss; 140. Tensioner wheel; 150. Fixing seat; 160. Bracket; 170. Step; 171. Slope;

[0054] 200. Medium plate;

[0055] 300. Tie rod; 310. Third boss;

[0056] 400. Flexible component; 410. First section; 420. Second section; 430. Slot; 440. Locking block;

[0057] 500. Adapter; 510. First mating part; 511. First groove; 512. First boss; 513. First locking platform; 514. Second groove; 520. Second mating part; 521. Second fixing hole;

[0058] 600. Fixed terminal;

[0059] 700. Electric adjustable motor; 710. Pin; 720. Clip;

[0060] 800. Fixing block; 810. Installation station; 811. Hole opening;

[0061] 801, First fixing hole. Detailed Implementation

[0062] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application can also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0063] To keep the drawings concise, only the parts relevant to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In some figures, components with the same structure or function are only schematically depicted, or only one is labeled. In this document, "a" means not only "only one," but also "more than one." The term "and / or" as used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations. The terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0064] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0065] In the specification, when an element is described as being "on," "attached," "connected," "coupled," or "in contact" with another element, the element can be directly located on, attached to, connected to, coupled to, or in contact with the other element, or there may be intermediate elements present. Conversely, when an element is described as being "directly" located on, directly attached to, directly connected to, directly coupled to, or directly in contact with another element, no intermediate elements are present. In the specification, the description of a feature being arranged "adjacent" to another feature can mean that a feature has a portion overlapping with the adjacent feature or a portion located above or below the adjacent feature.

[0066] In the specification, spatial relation terms such as "up," "down," "left," "right," "front," "back," "high," and "low" describe the relationship between one feature and another in the accompanying drawings. It should be understood that spatial relation terms include not only the orientation shown in the drawings but also the different orientations of the device during use or operation. For example, when the device in the drawings is inverted, a feature previously described as "below" other features can now be described as "above" other features. The device can also be oriented in other ways (rotated 90 degrees or in other orientations), in which case the relative spatial relationships will be explained accordingly.

[0067] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0068] To keep the drawings concise, each figure only schematically shows the parts relevant to the invention, and these do not represent the actual structure of the product. Furthermore, to facilitate understanding, in some figures, only one of components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0069] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0070] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0071] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of the invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0072] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0073] According to a specific embodiment provided by the present invention, see [link to specific embodiment]. Figures 1 to 6 A phase shifter may specifically include a cavity 100, a dielectric plate assembly, and a transmission mechanism. The dielectric plate assembly is housed inside the cavity 100 and is connected to the transmission mechanism via a flexible member 400; the flexible member 400 is displaced under the drive of the transmission mechanism, thereby causing the dielectric plate assembly to be displaced relative to the cavity 100.

[0074] In this embodiment, the transmission mechanism can directly drive the dielectric plate assembly to move through the flexible member 400, so that the cavity 100 provided in this embodiment does not need to be provided with a complex slot structure for the transmission mechanism to drive the dielectric plate assembly to move. This avoids signal loss caused by the slots processed in the cavity 100 for the transmission mechanism to drive the dielectric plate assembly to move, as well as PIM caused by burrs generated during the processing of the slots, thereby ensuring the performance of the phase shifter.

[0075] Specifically, the cavity 100 has a guide at each end along its length, and the flexible component is fitted onto the two guides. In this case, the dielectric plate assembly and the flexible component 400 together form a ring structure, or the dielectric plate assembly, the flexible component 400, and the transmission mechanism together form a ring structure.

[0076] In this embodiment, the dielectric substrate assembly, the flexible element 400, and the transmission mechanism, or the dielectric substrate assembly and the flexible element 400, together form a closed-loop whole and are fitted onto two guide members provided within the cavity 100. This ensures that the dielectric substrate will not detach from the cavity during the movement of the dielectric substrate assembly driven by the transmission mechanism, thereby effectively reducing signal leakage from the phase shifter output.

[0077] Specifically, the cavity 100 has a partition 120, which is located inside the annular structure when the annular structure is sleeved on the two guide members. At this time, part of the flexible member 400 and the medium plate assembly are located on the side of the partition 120 facing the inside of the cavity 100, while the remaining flexible member 400 and the transmission structure are located on the side of the partition 120 away from the inside of the cavity 100.

[0078] Preferably, the guide component in this embodiment is a guide wheel 110. Of course, in actual production, the guide component can also be other structures. For example, the guide component can be a round shaft, or the guide component can include a round shaft rotatably disposed within the cavity 100, and several rods sequentially distributed along the circumference of the round shaft, with the ends of the rods away from the round shaft abutting against the flexible component 400. When the transmission mechanism drives the flexible component 400 to move, the above two types of guide components can also provide a steering function for the flexible component 400, similar to the guide wheel 110. These will not be elaborated upon here, and are all within the scope of protection of this invention.

[0079] Specifically, the dielectric plate assembly includes a plurality of dielectric plates 200, which are connected end to end in sequence. Since the dielectric plates 200 are all located inside the cavity 100 during the adjustment process and do not need to be turned by the guide wheel 110, adjacent dielectric plates 200 can be connected by either a flexible member 400 or a rigid member. This is not limited here, and both are within the protection scope of the present invention.

[0080] Specifically, the flexible component 400 can be a rope or belt, etc.; the rigid component must be a non-metallic rigid component to avoid affecting the performance of the phase shifter. The specific configuration can be flexibly set according to the actual situation, and will not be elaborated here. All of them are within the protection scope of this invention.

[0081] Of course, as the optimal solution, in this embodiment, two adjacent medium plates 200 should be connected by rigid components. In this way, the several medium plates 200 that are driven as a whole are less likely to experience positional displacement and have high adjustment accuracy.

[0082] Specifically, see Figure 2 and Figure 6The media plates 200 located at both ends have a fixing block 800 at the far end. This fixing block 800 has an installation station 810 for fixing the flexible member 400, and the installation station 810 has an opening 811. Simultaneously, the end of the flexible member 400 connected to the media plate 200 has a slot 430, allowing this end to deform under external force. Thus, when the end of the flexible member 400 connected to the media plate 200 deforms under external force, it can pass through the opening 811 to enter and exit the installation station 810; when the end of the flexible member 400 connected to the media plate 200 is not subjected to external force, it cannot pass through the opening 811.

[0083] In addition, a locking block 440 is provided at the end of the flexible component 400 that is connected to the medium plate 200. When the end of the flexible component 400 that is connected to the medium plate 200 enters the installation station 810, the locking block 440 abuts against the end of the fixing block 800 facing the medium plate 200 to fix the flexible component 400 to the fixing block 800.

[0084] In this embodiment, the user only needs to press the part of the flexible component 400 with the slot 430 to deform it under force. The flexible component 400 can then enter the installation station 810 through the opening 811. After the flexible component 400 is fully inside the installation station 810, the user can release their hand, and the flexible component 400 will be stably fixed in the installation station 810. Conversely, when the user presses the part of the flexible component 400 with the slot 430, the flexible component 400 can be removed from the installation station 810. The entire disassembly and assembly process is very simple, requires no additional installation parts, and is convenient and practical.

[0085] As a preferred option, see Figure 6 There are two locking blocks 440, which are located on both sides of the flexible component 400 in the deformation direction. Thus, when the user needs to remove the self-installation station 810 of the flexible component 400, he / she can directly press the two locking blocks 440 to bring the two locking blocks 440 together, thereby removing the self-installation station 810 of the flexible component 400.

[0086] Of course, there can also be only one locking block 440. In this case, both sides of the flexible component 400 in the deformation direction are connected to the locking block 440. When the user needs to remove the flexible component 400 from the self-installation station 810, the user can first pull the locking block 440 away from the flexible component 400, and then press the part of the flexible component 400 that has been pulled out (i.e., the part with the slot 430) to deform it under force, thereby removing the flexible component 400 from the self-installation station 810.

[0087] It is worth noting that in actual production, the dielectric plate assembly may also include only one dielectric plate 200. In this case, the dielectric plate 200 has fixing blocks 800 at its two opposite ends to fix the flexible member 400. This will not be elaborated here, as it is all within the protection scope of this invention.

[0088] Specifically, see Figure 1 and Figure 2 The flexible component 400 includes a first portion 410 and a second portion 420. One end of the first portion 410 is fixed to the dielectric plate assembly, i.e., one of the two dielectric plates 200 at the beginning and end, and the other end is fixed to one end of the pull rod 300. Conversely, one end of the second portion 420 is fixed to the dielectric plate assembly, i.e., the other of the two dielectric plates 200 at the beginning and end, and the other end is fixed to the end of the pull rod 300 away from the first portion 410.

[0089] Among them, see Figure 1 and Figure 2 The first part 410 and the pull rod 300 are fixedly connected by an adapter 500, and the adapter 500 is connected to the electric motor 700; the second part 420 and the pull rod 300 are fixedly connected by a fixed terminal 600.

[0090] Specifically, see Figures 2 to 4 The adapter 500 includes a first mating portion 510 and a second mating portion 520 that are fixedly connected. The first mating portion 510 is provided with a first groove 511 for accommodating the flexible member 400 and the pull rod 300, and the opening edge of the first groove 511 has first bosses 512 extending towards each other at both ends perpendicular to the length direction of the pull rod 300. At the same time, at one end of the cavity 100 facing the first mating portion 510, second bosses 130 extend away from each other on both sides perpendicular to the length direction of the pull rod 300. The second bosses 130 are engaged in the first groove 511 and abut against the first bosses 512. In addition, the first groove 511 is provided with a first retaining plate 513, and both the flexible member 400 and the pull rod 300 are provided with a first fixing hole 801. The first retaining plate 513 passes through the first fixing holes 801 on the flexible member 400 and the pull rod 300 in sequence. The second docking part 520 is used to connect to the electronically controlled motor 700. When the electronically controlled motor 700 drives the second docking part 520 to move, the first docking part 510, which is fixedly connected to the second docking part 520, slides along the length direction of the second boss 130 on the cavity 100. This, through the cooperation of the first locking platform 513 and the first fixing hole 801, drives the flexible member 400 and the pull rod 300 to move, thereby driving the movement of several medium plates 200. Preferably, the first docking part 510 and the second docking part 520 are integrally formed, resulting in high structural strength and a long service life.

[0091] In this embodiment, the first docking part 510 can be understood as a slider that moves along the length direction of the second protrusion 130 on the cavity 100 under the action of the electronically controlled motor 700. The second protrusion 130 is engaged within the first groove 511 and abuts against the first protrusion 512. This, to a certain extent, restricts the flexible member 400 and the pull rod 300 from swaying along the groove depth direction of the first groove 511, preventing them from disengaging from the first locking platform 513 within the first groove 511. This ensures a stable connection between the pull rod 300 and the flexible member 400, resulting in better consistency in the movement of the medium plate 200 and the pull rod 300.

[0092] Preferably, see Figures 2 to 4 A third boss 310 extending along the length of the pull rod 300 is provided on the side of the pull rod 300 facing the first docking portion 510. A second groove 514, matching the contour of the third boss 310, is provided at the bottom of the first groove 511. The third boss 310 presses a portion of the flexible member 400 into the second groove 514. At this time, the second groove 514 can restrict the movement of the flexible member 400 and the pull rod 300 in the groove width and length directions, thereby preventing the flexible member 400 and the pull rod 300 from translating relative to the first docking portion 510. Thus, the electric adjustable motor 700 can precisely control the displacement of the pull rod 300 and the flexible member 400, achieving extremely high adjustment accuracy.

[0093] During assembly, the user can first fix the flexible part 400 and the pull rod 300 into the first docking part 510, and then insert the first docking part 510 into one end of the cavity 100 along its length, so that the second boss 130 on the cavity 100 can pass into the first groove 511 of the first docking part 510 and abut against the first boss 512.

[0094] Further, see Figure 2 , Figure 3 and Figure 5 The second docking portion 520 is provided with a plurality of second fixing holes 521, and the electric motor 700 is provided with a plurality of pins 710 that can pass through the second fixing holes 521. In addition, the electric motor 700 is also provided with a plurality of latches 720. When the pins 710 pass through the second fixing holes 521, the latches 720 are engaged with the edge of the second docking portion 520 to fix the electric motor 700 and the adapter 500 in a fixed connection.

[0095] In this embodiment, the pin 710 passes through the second fixing hole 521 for positioning, and the buckle 720 engages with the edge of the second mating part 520 for fixing. Thus, when assembling the second mating part 520 and the ESC motor 700, the user requires no additional installation parts, making installation quick, convenient, and highly practical.

[0096] In one specific embodiment, the structure of the fixed terminal 600 is similar to that of the first mating portion 510 mentioned in the above embodiments. Specifically, the fixed terminal 600 has a third groove for accommodating the flexible member 400 and the pull rod 300, and the opening edge of the third groove extends with fourth protrusions at both ends perpendicular to the length of the pull rod 300, moving towards each other. Simultaneously, at one end of the cavity 100 facing the fixed terminal 600, fifth protrusions extend with both sides perpendicular to the length of the pull rod 300, moving away from each other. The fifth protrusions are fitted into the third groove and abut against the fourth protrusions. Furthermore, a second retaining platform is provided within the third groove, and both the flexible member 400 and the pull rod 300 have a third fixing hole. The second retaining platform passes sequentially through the third fixing holes on the flexible member 400 and the pull rod 300.

[0097] In a preferred embodiment, see Figure 7 and Figure 8 A tensioning wheel 140 is provided on the side of the cavity 100 facing the pull rod 300 to ensure that the flexible component 400 remains taut. Thus, when the ESC motor 700 moves the pull rod 300, the flexible component 400 can promptly move the medium plate 200, achieving high adjustment accuracy. Simultaneously, the tensioning wheel 140 also prevents problems such as inaccurate displacement of the medium plate 200 caused by loosening of the flexible component 400 over prolonged use, making it highly practical.

[0098] It is worth noting that the flexible component 400 should not be too tight or too loose. The specific tightness should be flexibly set according to the actual situation, which will not be elaborated here, and all of them are within the protection scope of this invention.

[0099] Specifically, see Figure 8 The cavity 100 is provided with a fixed seat 150 on the side facing the pull rod 300, and a bracket 160 is provided on the fixed seat 150. The tension wheel 140 is rotatably fixed to the bracket 160.

[0100] Preferably, see Figure 8 A step 170 is provided between the fixed base 150 and the bracket 160. The side of the step 170 facing the bracket 160 is a slope 171. By adjusting the slope of the slope 171 of the step 170, the tensioning effect of the tensioning wheel 140 on the flexible component 400 can be adjusted. On the one hand, users can adjust the tightness of the flexible component 400 by replacing the step 170 with different slopes to adapt it to different phase shifters. On the other hand, if the flexible belt loosens due to prolonged use, the tightness of the flexible component 400 can be quickly readjusted to a suitable size to ensure that the flexible component 400 always remains taut, making operation convenient.

[0101] Specifically, the user can first adjust the tightness of the flexible component 400 to a suitable degree by replacing the steps 170 with different slopes; then, start the ESC motor 700, which drives the pull rod 300 and the first part 410 of the flexible component 400 to move through the adapter 500, thereby causing the pull rod 300 to drive the second part 420 of the flexible component 400 to move through the fixed terminal 600; finally, under the combined action of the first part 410 and the second part 420, the medium plate 200 is displaced.

[0102] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0103] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A phase shifter, characterized by, The utility model relates to a phase shifter, comprising: a cavity, a dielectric plate assembly and a transmission mechanism; the dielectric plate assembly is housed inside the cavity, and the dielectric plate assembly is connected with the transmission mechanism through a flexible piece; the flexible piece is displaced under the drive of the transmission mechanism, thereby driving the dielectric plate assembly to be displaced relative to the cavity; the cavity is provided with a guide at both ends in the length direction of the cavity; the dielectric plate assembly and the flexible piece together form a ring structure, or the dielectric plate assembly, the flexible piece and the transmission mechanism together form a ring structure; the flexible piece is sleeved on the two guides.

2. The phase shifter according to claim 1, wherein: the dielectric plate assembly comprises a plurality of dielectric plates, and the dielectric plates are connected end to end in sequence; wherein the dielectric plates at both ends are provided with a fixing block at the end away from each other, the fixing block has a mounting station for fixing the flexible piece, and the mounting station is provided with an opening; the end of the flexible piece connected with the dielectric plate is provided with a slot, so that the end of the flexible piece connected with the dielectric plate can be deformed under external force; and the end of the flexible piece connected with the dielectric plate is provided with a clamping block adapted to abut against the end of the fixing block facing the dielectric plate, so as to fix the flexible piece to the fixing block.

3. The phase shifter according to claim 1, wherein: the transmission mechanism comprises a pull rod and an electric adjusting motor for driving the pull rod to move; the flexible piece comprises a first part and a second part; one end of the first part is fixed to the dielectric plate assembly, the other end of the first part is fixed to one end of the pull rod; and one end of the second part is fixed to the dielectric plate assembly, the other end of the second part is fixed to the end of the pull rod away from the first part.

4. The phase shifter according to claim 3, wherein: the first part and the pull rod are fixedly connected through an adapter, and the adapter is connected to the electric adjusting motor; and the second part and the pull rod are fixedly connected through a fixed terminal.

5. The phase shifter according to claim 4, wherein: the adapter comprises a first docking part and a second docking part fixedly connected; the first docking part is provided with a first groove for accommodating the flexible piece and the pull rod, and the opening edges of the first groove extend in the direction of approaching each other at both ends perpendicular to the length direction of the pull rod; and the end of the cavity facing the first docking part extends in the direction of moving away from each other at both sides perpendicular to the length direction of the pull rod, and the second protrusion is clamped in the first groove and abuts against the first protrusion; wherein the first groove is provided with a first clamping post, and the flexible piece and the pull rod are each provided with a first fixed hole, and the first clamping post passes through the first fixed holes of the flexible piece and the pull rod in sequence. The second connecting part is used for connecting the electrically-controlled motor, when the electrically-controlled motor drives the second connecting part to move, the first connecting part fixedly connected with the second connecting part slides on the cavity along the length direction of the second protrusion, so as to drive the flexible member and the pull rod to move through the cooperation of the first clamping post and the first fixed hole, and then drive the plurality of medium plates to move.

6. The phase shifter of claim 5, wherein, The pull rod is provided with a third protrusion extending along the length direction of the pull rod on the side of the first connecting part; and The bottom of the first groove is provided with a second groove matched with the profile of the third protrusion, the third protrusion compresses the flexible member in the second groove, and the second groove is used to limit the translation of the flexible member and the pull rod relative to the first connecting part.

7. The phase shifter of claim 5 or 6, wherein, The second connecting part is provided with a plurality of second fixed holes, and the electrically-controlled motor is provided with a plurality of pins capable of penetrating through the second fixed holes; and The electrically-controlled motor is provided with a plurality of buckles, when the pins penetrate through the second fixed holes, the buckles are buckled on the edge of the second connecting part to fixedly connect the electrically-controlled motor and the adapter.

8. The phase shifter of claim 3, wherein, The side of the cavity towards the pull rod is provided with a tensioning wheel to keep the flexible member in a taut state; And / or The guide member is a guide wheel.

9. The phase shifter of claim 8, wherein, The side of the cavity towards the pull rod is provided with a fixed seat, and the fixed seat is provided with a support, and the tensioning wheel is rotatably fixed on the support.

10. The phase shifter of claim 9, wherein, A step is arranged between the fixed seat and the support, and the side of the step towards the support is a slope surface, the tensioning effect of the tensioning wheel on the flexible member is adjusted by adjusting the slope of the slope surface.

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