A microwave switch with a failure protection

Abstract

This application relates to a fail-safe microwave switch, specifically within the technical field of microwave switches. The microwave switch includes a connection mechanism comprising a base shell, a first terminal, a second terminal, and a third terminal. A push rod conductive assembly is disposed between the first and second terminals, and between the second and third terminals. A swing mechanism includes a magnetic pendulum, the middle of which is rotatably connected to the base shell. An electromagnetic mechanism includes a magnetic plate, with the magnetic pendulum located between the base shell and the magnetic plate. Two swing electromagnets are spaced apart on the magnetic plate, each corresponding to a push rod conductive assembly, and one end of the magnetic pendulum is located between the corresponding push rod conductive assembly and the corresponding swing electromagnet. A permanent magnet is also disposed on the magnetic plate, located between the two swing electromagnets, with the distance between the permanent magnet and one swing electromagnet being less than the distance between the permanent magnet and the other swing electromagnet. This application can reduce the drive current of the swing electromagnets.

Description

Technical Field

[0001] This application relates to the technical field of microwave switches, and in particular to a fail-safe microwave switch. Background Technology

[0002] Microwave switches, also known as radio frequency (RF) switches, have a wide range of applications in RF / microwave systems, such as time multiplexers, time-division channel selection, pulse modulation, transceiver switches, and beam adjustment. RF switches are commonly used in automated control circuits. In fact, an RF switch is an automatic switch that uses a small current to control a large current operation.

[0003] Currently, commonly used microwave switches mainly consist of a connection mechanism and a relay mechanism. The connection mechanism includes several terminals, with a conductive plate positioned between two terminals that need to be connected. A push post is mounted on the conductive plate, which pushes the conductive plate to connect with the corresponding two terminals, thereby establishing a signal transmission path between them. In this process, the push post is driven by the relay mechanism.

[0004] A common relay mechanism includes a magnetic pendulum and two electromagnets. The magnetic pendulum is similar in structure to a seesaw. The two electromagnets are symmetrically arranged at both ends of the magnetic pendulum. When the two electromagnets are energized, one electromagnet attracts the corresponding end of the magnetic pendulum, while the other electromagnet repels the corresponding end of the magnetic pendulum. At this time, the magnetic pendulum swings, and one end of the magnetic pendulum will then abut against the corresponding push post, thereby realizing the driving function of the push post.

[0005] Since magnetically latching microwave switches need to return to their initial state after power is cut off, the magnetic pendulum needs to be able to reset when the electromagnet is de-energized. For this reason, a reset spring is often added to one end of the existing magnetic pendulum, so that when the swing electromagnet is de-energized, the reset spring will push the magnetic pendulum back to its original position.

[0006] Regarding the aforementioned technologies, due to the elastic force of the return spring, when the electromagnet drives the magnetic pendulum to rotate, the magnetic pendulum needs to overcome the elastic force of the return spring. This requires the electromagnet to have a larger magnetic force, which in turn requires a larger driving current, thus increasing energy consumption. Summary of the Invention

[0007] This application provides a fail-safe microwave switch, the purpose of which is to achieve automatic reset of the magnetic pendulum without using a reset spring, reduce the magnetic force required for the magnetic pendulum to switch states, and thus reduce the driving current of the oscillating electromagnet.

[0008] The fail-safe microwave switch provided in this application adopts the following technical solution:

[0009] A fail-safe microwave switch includes a connection mechanism comprising a base shell, a first terminal, a second terminal, and a third terminal, the first, second, and third terminals being sequentially disposed on the base shell, and push rod conductive assemblies being disposed between the first and second terminals and between the second and third terminals; a swing mechanism including a magnetic pendulum, the middle of which is rotatably connected to the base shell, and both ends of which are correspondingly disposed with two push rod conductive assemblies; an electromagnetic mechanism including a magnetic plate, the magnetic plate being spaced apart on one side of the base shell, and the magnetic pendulum being located between the base shell and the magnetic plate, and two swing electromagnets being spaced apart on the magnetic plate, each swing electromagnet corresponding with a push rod conductive assembly, with one end of the magnetic pendulum located between the corresponding push rod conductive assembly and the corresponding swing electromagnet; a permanent magnet is also disposed on the magnetic plate, the permanent magnet being located between the two swing electromagnets, and the distance between the permanent magnet and one of the swing electromagnets being less than the distance between the permanent magnet and the other swing electromagnet.

[0010] By adopting the above technical solution, the connecting mechanism, through the arrangement of the first, second, and third terminals, can connect to external cables. The push rod conductive component can connect or disconnect the signal transmission path between the second terminal and the corresponding first or third terminal. The swing mechanism, through the arrangement of the magnetic pendulum, ensures that when the magnetic pendulum rotates, the end of the pendulum rotating towards the base shell abuts against the corresponding push rod conductive component, thereby driving the corresponding push rod conductive component. The electromagnetic mechanism, through the cooperation of two swing electromagnets, can drive the magnetic pendulum when both swing electromagnets are energized. The cooperation of the connecting mechanism, swing mechanism, and electromagnetic mechanism enables the realization of the basic functions of a microwave switch.

[0011] Based on this, a permanent magnet is placed between the two magnetic pendulums, and the distance between the permanent magnet and one oscillating electromagnet is smaller than the distance between the permanent magnet and the other oscillating electromagnet. This positioning of the permanent magnet creates an asymmetrical and unbalanced magnetic field between the permanent magnet, the magnetic plate, and the two oscillating electromagnets.

[0012] Due to the existence of an unbalanced magnetic field, when the two oscillating electromagnets are de-energized, the oscillating electromagnet closer to the permanent magnet has a larger magnetic force, while the other oscillating electromagnet has a smaller magnetic force. This results in different magnitudes of the attraction force between the two ends of the magnetic pendulum and the corresponding oscillating electromagnets. Consequently, the end of the magnetic pendulum closer to the oscillating electromagnet with the smaller magnetic force will move towards the base shell.

[0013] This configuration allows the magnetic pendulum to rotate under the drive of the two oscillating electromagnets when the oscillating electromagnets are energized; when the oscillating electromagnets are de-energized, the magnetic pendulum rotates in the opposite direction under the influence of the unbalanced magnetic field, thus resetting the magnetic pendulum. Since there is no return spring to resist the magnetic pendulum, the magnetic force required for its operation is relatively small, and consequently, the required driving current is also smaller.

[0014] Optionally, each end of the magnetic pendulum is provided with a spring, and the spring is provided in a one-to-one correspondence with the push rod conductive assembly, with the spring located between the corresponding push rod conductive assembly and the magnetic pendulum.

[0015] By adopting the above technical solution, the spring is designed so that when the magnetic pendulum contacts the corresponding push rod conductive component, the corresponding spring deforms, thereby increasing the contact stability of the magnetic pendulum against the push rod conductive component.

[0016] Optionally, magnetic shielding sheets are provided at both ends of the magnetic pendulum, and the magnetic shielding sheets are provided in a one-to-one correspondence with the swing electromagnets, with the magnetic shielding sheets located between the corresponding swing electromagnets and the magnetic pendulum.

[0017] By adopting the above technical solution, the magnetic shielding sheet is placed between the oscillating electromagnet and the magnetic pendulum, which plays the role of magnetic field isolation.

[0018] Optionally, the magnetic guide plate is arranged along the interval direction of the two oscillating electromagnets along its length, and the permanent magnet is slidably connected to the magnetic guide plate along its length.

[0019] By adopting the above technical solution, the permanent magnet is slidably connected to the magnetic plate. This design allows the permanent magnet to be finely adjusted in position between the two oscillating electromagnets, thereby achieving fine adjustment of the magnetic field.

[0020] Optionally, the magnetic guide plate has a fine-tuning sliding hole, the length direction of which is along the length direction of the magnetic guide plate; a fine-tuning seat is provided on the side of the permanent magnet facing the magnetic guide plate, the fine-tuning seat is inserted into the fine-tuning sliding hole, and the fine-tuning seat is slidably connected to the inner wall of the fine-tuning sliding hole along the length direction of the fine-tuning sliding hole; the fine-tuning seat is made of magnetic material.

[0021] By adopting the above technical solution, the coordinated design of the fine-tuning slide hole and the fine-tuning base guides and limits the sliding of the permanent magnet, thereby improving the stability of the fine-tuning of the permanent magnet's position. The fine-tuning base is made of magnetically conductive material, ensuring the transmission of the magnetic field. The combined use of the fine-tuning slide hole and the fine-tuning base allows the microwave switch to maintain normal operation by fine-tuning the position of the permanent magnet after production, maintenance, or disassembly, improving the flexibility and maintainability of the microwave switch.

[0022] Optionally, the fine-tuning seat is detachably connected to the permanent magnet.

[0023] By adopting the above technical solution, the detachable connection design between the fine-tuning base and the permanent magnet makes the replacement and maintenance of the permanent magnet more convenient.

[0024] Optionally, the magnetic guide plate is provided with a fine-tuning component, the fine-tuning component includes a fine-tuning rod, the fine-tuning rod is rotatably connected to the magnetic guide plate, and the fine-tuning rod is threadedly connected to the fine-tuning seat; the length direction of the fine-tuning rod is set along the length direction of the magnetic guide plate; a fine-tuning screw is coaxially connected to one end of the fine-tuning rod.

[0025] By adopting the above technical solution, the fine-tuning component includes a fine-tuning rod and a fine-tuning screw. The fine-tuning rod and the fine-tuning seat are connected by a thread. Therefore, when the fine-tuning screw is turned, the fine-tuning rod rotates, and the fine-tuning seat moves along the length of the fine-tuning rod, which enables the fine-tuning of the permanent magnet position.

[0026] Optionally, a fine-tuning plate is provided on the magnetic guide plate, the length direction of the fine-tuning plate is arranged along the length direction of the magnetic guide plate, and the fine-tuning plate is slidably connected to the magnetic guide plate along its own length direction; the fine-tuning seat is slidably connected to the fine-tuning plate along the length of the fine-tuning plate, and the fine-tuning component is provided on the fine-tuning plate; the magnetic guide plate is also provided with an automatic driving component, the automatic driving component is used to drive the fine-tuning plate to slide on the magnetic guide plate.

[0027] By adopting the above technical solution, the micro-adjustment plate and automatic drive component enable the microwave switch to automatically adjust the position of the permanent magnet. This establishes an initial position and a working position between the two oscillating electromagnets, and the permanent magnet, in cooperation with the micro-adjustment plate and automatic drive component, can reciprocate between the initial position and the working position. Furthermore, before the oscillating electromagnets are de-energized, the permanent magnet moves to the initial position, at which point it establishes an unbalanced magnetic field, achieving the reset of the magnetic pendulum; conversely, before the electromagnets are energized, the permanent magnet moves to the working position, at which point it assists in attracting or repelling one end of the magnetic pendulum, thereby reducing the drive current required for the oscillating electromagnets.

[0028] Optionally, the automatic drive assembly includes a permanent magnet and a first electromagnet, the first electromagnet being disposed on the magnetic guide plate, the permanent magnet being disposed on the fine-tuning plate, and the permanent magnet and the first electromagnet being disposed opposite each other along the length direction of the fine-tuning plate; the magnetic guide plate is also provided with a positioning assembly, the positioning assembly including a second electromagnet, the first electromagnet and the second electromagnet being spaced apart along the length direction of the fine-tuning plate, and the permanent magnet being located between the first electromagnet and the second electromagnet.

[0029] By adopting the above technical solution, the automatic drive component achieves automatic driving of the fine-tuning plate through the cooperation of a permanent magnet and a first electromagnet. The second electromagnet in the positioning component limits the movement of the permanent magnet, thus limiting the movement of the fine-tuning plate. When the first electromagnet is energized, it repels the permanent magnet, causing the fine-tuning plate to move until the permanent magnet contacts the corresponding second electromagnet. When the fine-tuning plate needs to be reset, the second electromagnet is energized, repels the permanent magnet, and the fine-tuning plate resets.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. This application achieves automatic reset of the magnetic pendulum when the oscillating electromagnet is de-energized by setting the position of the permanent magnet. Since there is no resistance to the magnetic pendulum by the reset spring, the magnetic force required for the magnetic pendulum to work is smaller, and thus the required driving current is smaller.

[0032] 2. The permanent magnet of this application can be finely adjusted in position between two oscillating electromagnets, thereby finely adjusting the magnetic field distribution, so that the microwave switch can adapt to different working conditions and environments.

[0033] 3. The permanent magnet of this application can automatically reciprocate between the initial position and the working position. When the permanent magnet moves to the initial position, it establishes an unbalanced magnetic field, which can realize the reset of the magnetic pendulum. When the permanent magnet moves to the working position, it assists in attracting or repelling one end of the magnetic pendulum, thereby reducing the driving current required for the swing electromagnet. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the microwave switch in Embodiment 1 of this application.

[0035] Figure 2 This is a partial cross-sectional view of the microwave switch of Embodiment 1 of this application.

[0036] Figure 3 This is a schematic diagram of the overall structure of the microwave switch in Embodiment 2 of this application.

[0037] Figure 4 This is a schematic diagram of the overall structure of the permanent magnet and fine-tuning mechanism in Embodiment 2 of this application.

[0038] Figure 5 This is a schematic diagram of the overall structure of the fine-tuning seat in Embodiment 2 of this application.

[0039] Figure 6 This is a cross-sectional structural schematic diagram of the permanent magnet and fine-tuning mechanism in Embodiment 2 of this application.

[0040] Figure 7This is a schematic diagram of the overall structure of the intermediate plate in Embodiment 2 of this application.

[0041] Figure 8 This is a schematic diagram of the overall structure of the microwave switch in Embodiment 3 of this application.

[0042] Figure 9 This is a schematic diagram of the overall structure of the intermediate plate in Embodiment 3 of this application.

[0043] Figure 10 This is a schematic diagram of the overall structure of the fine-tuning plate in Embodiment 3 of this application.

[0044] Figure 11 This is a schematic diagram of the overall structure of the intermediate plate and the second plate in Embodiment 3 of this application.

[0045] In the diagram, 1. Connecting mechanism; 11. Base shell; 111. Connecting cavity; 112. Push hole; 12. First terminal; 13. Second terminal; 14. Third terminal; 15. Push rod conductive assembly; 151. Conductive sheet; 152. Push post; 153. First spring; 2. Swinging mechanism; 21. Magnetic pendulum; 22. Spring; 23. Magnetic shielding sheet; 3. Electromagnetic mechanism; 31. Magnetic plate; 32. Permanent magnet; 321. Insertion post; 33. Swinging electromagnet; 4. Fine-tuning mechanism; 41. Fine-tuning seat; 411. Slot; 42. Fine-tuning sliding hole; 43. Limiting component; 431. Guide vertical plate; 432. Limiting horizontal plate; 44. Mounting plate; 441. First plate; 4411. First elongated hole; 442 1. Intermediate plate; 4421. Guide elongated hole; 4422. Fine-tuning groove; 4423. Clearance elongated groove; 4424. Long adjustment slide; 443. Second plate; 4431. Second elongated hole; 45. Fine-tuning component; 451. Snap-fit ​​block; 4511. Snap-fit ​​hole; 452. Fine-tuning rod; 453. Fine-tuning screw; 5. Long adjustment mechanism; 51. Fine-tuning plate; 511. Fine-tuning elongated hole; 52. Automatic drive component; 521. Permanent magnet; 522. First electromagnet; 53. Positioning component; 531. Second electromagnet; 532. Positioning groove; 533. Positioning drive component; 5331. Drive bolt; 5332. Drive spring; 54. Manual drive component; 541. Manual lever; 542. Manual groove. Detailed Implementation

[0046] The following is in conjunction with the appendix Figure 1 -Appendix Figure 11 This application will be described in further detail below.

[0047] Example 1:

[0048] A fail-safe microwave switch, as described above Figure 1 and Figure 2 It includes a connecting mechanism 1, a swinging mechanism 2, and an electromagnetic mechanism 3.

[0049] Reference Figure 1 and Figure 2 The connecting mechanism 1 includes a base shell 11, a first terminal 12, a second terminal 13 and a third terminal 14. A connecting cavity 111 is provided inside the base shell 11. The first terminal 12, the second terminal 13 and the third terminal 14 are arranged sequentially on the same side of the base shell 11, and the first terminal 12, the second terminal 13 and the third terminal 14 all extend into the connecting cavity 111.

[0050] Reference Figure 1 and Figure 2 A push rod conductive assembly 15 is provided between the first terminal 12 and the second terminal 13, and between the second terminal 13 and the third terminal 14. The push rod conductive assembly 15 is located in the connecting cavity 111.

[0051] Reference Figure 1 and Figure 2 Since the push rod conductive assembly 15 between the first terminal 12 and the second terminal 13 and the push rod conductive assembly 15 between the second terminal 13 and the third terminal 14 have the same structure, this embodiment will use the push rod conductive assembly 15 between the first terminal 12 and the second terminal 13 as an example for explanation.

[0052] Reference Figure 1 and Figure 2 The push rod conductive assembly 15 includes a conductive sheet 151 and a push post 152. The length direction of the conductive sheet 151 is arranged along the interval direction between the first terminal 12 and the second terminal 13, and the conductive sheet 151 is located between the second terminal 13 and the first terminal 12 along its own length direction. A push hole 112 is opened on the side of the base shell 11 opposite to the first terminal 12. The push post 152 is inserted into the push hole 112 and is slidably connected to the inner wall of the push hole 112 along its own axial direction. One end of the push post 152 extends to the outside of the base shell 11, and the other end extends into the connecting cavity 111 and is connected to the corresponding conductive sheet 151. Both the push post 152 and the conductive sheet 151 are slidably connected to the inner wall of the connecting cavity 111.

[0053] The push rod conductive assembly 15 is designed such that by pushing the corresponding push post 152 outside the base shell 11, the conductive sheet 151 can be moved so that one end of the conductive sheet 151 overlaps with the second terminal 13 and the other end overlaps with the first terminal 12, thereby fulfilling the function of the push rod conductive assembly 15.

[0054] Reference Figure 1 and Figure 2 The push rod conductive assembly 15 also includes a first spring 153, which is sleeved on the corresponding push post 152. One end of the first spring 153 is connected to the push post 152, and the other end abuts against the base shell 11. The first spring 153 facilitates the reset of the push post 152 and the conductive sheet 151.

[0055] Reference Figure 1 and Figure 2 The swing mechanism 2 includes a magnetic pendulum 21, which is located on the side of the base shell 11 where the push hole 112 is provided. The magnetic pendulum 21 is rotatably connected to the base shell 11 via a mounting bracket at its midpoint along its length. Furthermore, two push posts 152 are correspondingly positioned at both ends of the magnetic pendulum 21, with one end of each push post 152 facing the end of the magnetic pendulum 21 along its axial direction.

[0056] With this structural configuration, when the magnetic pendulum 21 swings, the end of the magnetic pendulum 21 that rotates toward the base shell 11 will abut against the corresponding push post 152, thereby causing the push post 152 to move along its own axis, which can drive the push post 152.

[0057] Reference Figure 1 and Figure 2 The magnetic pendulum 21 has springs 22 at both ends along its length, with the springs 22 located on the side of the magnetic pendulum 21 facing the base shell 11. When the magnetic pendulum 21 pushes the corresponding push post 152, one end of the push post 152 abuts against the corresponding spring 22. The springs 22 improve the stability of the magnetic pendulum 21 against the push post 152.

[0058] Reference Figure 1 and Figure 2 The magnetic pendulum 21 has magnetic shielding plates 23 at both ends along its length, and the magnetic shielding plates 23 are located on the side of the magnetic pendulum 21 away from the base shell 11. The magnetic shielding plates 23 serve to isolate the magnetic field and prevent interference with the magnetic field required by this application.

[0059] Reference Figure 1 and Figure 2 The electromagnetic mechanism 3 includes a magnetic plate 31, a permanent magnet 32, and two oscillating electromagnets 33. The magnetic plate 31 is located on the side of the base shell 11 where the push hole 112 is opened. The permanent magnet 32, the oscillating electromagnets 33, and the magnetic pendulum 21 are all located on the side of the magnetic plate 31 facing the base shell 11, and the permanent magnet 32 ​​and the oscillating electromagnets 33 are both located between the magnetic pendulum 21 and the magnetic plate 31.

[0060] Reference Figure 1 and Figure 2 The axial direction of the two swing electromagnets 33 is arranged along the interval direction between the base shell 11 and the magnetic plate 31. The two swing electromagnets 33 are arranged at intervals along the length direction of the magnetic plate 31. The two ends of the magnetic pendulum 21 are arranged in a one-to-one correspondence with the two swing electromagnets 33. One end of the swing electromagnet 33 is connected to the magnetic plate 31, and the other end faces the corresponding magnetic pendulum 21.

[0061] Due to the electromagnetic mechanism 3, when the two swinging electromagnets 33 are energized, one swinging electromagnet 33 generates an attractive force on one end of the magnetic pendulum 21, and the other swinging electromagnet 33 generates a repulsive force on the other end of the magnetic pendulum 21. At this time, the magnetic pendulum 21 swings, thereby enabling the corresponding push column 152 to be driven.

[0062] Reference Figure 1 and Figure 2 A permanent magnet 32 ​​is disposed between two oscillating electromagnets 33 along the length of the magnetic guide plate 31, with one end of the permanent magnet 32 ​​connected to the magnetic guide plate 31 and the other end facing the magnetic guide pendulum 21. In this embodiment, the distance between the permanent magnet 32 ​​and one oscillating electromagnet 33 is smaller than the distance between the permanent magnet 32 ​​and the other oscillating electromagnet 33.

[0063] The position of the permanent magnet 32 ​​creates an asymmetrical and unbalanced magnetic field between the permanent magnet 32, the magnetic plate 31, and the two oscillating electromagnets 33. As a result, when the two oscillating electromagnets 33 are de-energized, the oscillating electromagnet 33 closer to the permanent magnet 32 ​​has a larger magnetic force, while the other oscillating electromagnet 33 has a smaller magnetic force. At this time, the attraction forces at both ends of the magnetic pendulum 21 are different, which causes the end of the magnetic pendulum 21 that is closer to the oscillating electromagnet 33 with the smaller magnetic force to move towards the base shell 11, thereby pushing the corresponding push column 152 to move.

[0064] The implementation principle of this application embodiment is as follows: When the oscillating electromagnet 33 is energized, one oscillating electromagnet 33 repels one end of the magnetic pendulum 21, while the other oscillating electromagnet 33 attracts the corresponding end of the magnetic pendulum 21. At this time, the magnetic pendulum 21 oscillates, thereby driving the corresponding push column 152. When the oscillating electromagnet 33 is de-energized, because the attraction force of the oscillating electromagnet 33 closer to the permanent magnet 32 ​​on the magnetic pendulum 21 is greater than that of the other oscillating electromagnet 33 on the magnetic pendulum 21, the magnetic pendulum 21 oscillates under the cooperation of the unbalanced attraction forces until the magnetic pendulum 21 drives the other push column 152.

[0065] Since there is no return spring to resist the magnetic pendulum 21, the magnetic force required for the magnetic pendulum 21 to work is smaller, and thus the required driving current is smaller.

[0066] Example 2:

[0067] A fail-safe microwave switch, as described above Figure 3 and Figure 4The difference between this embodiment and Embodiment 1 is that it further includes a fine-tuning mechanism 4. The fine-tuning mechanism 4 includes a fine-tuning seat 41, which is disposed on the magnetic guide plate 31, and the permanent magnet 32 ​​is detachably connected to the fine-tuning seat 41. A fine-tuning sliding hole 42 is provided on the magnetic guide plate 31, with its length direction along the length direction of the magnetic guide plate 31. The fine-tuning seat 41 is inserted into the fine-tuning sliding hole 42, and the fine-tuning seat 41 is slidably connected to the inner wall of the fine-tuning sliding hole 42 along its length direction. The fine-tuning seat 41 is made of a magnetically conductive material.

[0068] The fine-tuning seat 41 facilitates the installation of the permanent magnet 32, while the matching of the fine-tuning sliding hole 42 and the fine-tuning seat 41 facilitates the fine-tuning of the position of the permanent magnet 32.

[0069] Reference Figure 5 and Figure 6 The fine-tuning base 41 has a slot 411 on the side facing the permanent magnet 32, and a plug post 321 is provided on the side of the permanent magnet 32 ​​facing the fine-tuning base 41. The plug post 321 is plugged into the slot 411. This structure enables a detachable connection between the permanent magnet 32 ​​and the fine-tuning base 41.

[0070] Reference Figure 5 and Figure 6 The fine-tuning seat 41 is also provided with a limiting component 43, which includes a guide vertical plate 431 and a limiting horizontal plate 432. The limiting horizontal plate 432 is spaced apart on the side of the fine-tuning seat 41 away from the permanent magnet 32, and the guide vertical plate 431 is located between the limiting horizontal plate 432 and the fine-tuning seat 41. One side of the guide vertical plate 431 is fixedly connected to the fine-tuning seat 41, and the other side is connected to the limiting horizontal plate 432 by bolts.

[0071] Reference Figure 3 and Figure 4 The magnetic plate 31 is also provided with a mounting plate 44, which includes a first plate 441, an intermediate plate 442, and a second plate 443. The first plate 441, the intermediate plate 442, and the second plate 443 are arranged sequentially on the side of the magnetic plate 31 away from the permanent magnet 32. The first plate 441 is located between the magnetic plate 31 and the intermediate plate 442. The first plate 441, the intermediate plate 442, and the second plate 443 are all detachably connected to the magnetic plate 31 by bolts.

[0072] Reference Figure 3 and Figure 6The first plate 441 has a first elongated hole 4411, the middle plate 442 has a guide elongated hole 4421, and the second plate 443 has a second elongated hole 4431. The length directions of the first elongated hole 4411, the second elongated hole 4431, the guide elongated hole 4421, and the fine-tuning sliding hole 42 are the same, and the fine-tuning sliding hole 42, the first elongated hole 4411, the guide elongated hole 4421, and the second elongated hole 4431 are connected sequentially along the thickness direction of the magnetic plate 31.

[0073] Reference Figure 5 and Figure 6 The fine-tuning seat 41 is inserted into the first elongated hole 4411 and is slidably connected to the inner wall of the first elongated hole 4411; the guide vertical plate 431 is inserted into the guide elongated hole 4421 and is slidably connected to the inner wall of the guide elongated hole 4421; the limiting horizontal plate 432 is inserted into the second elongated hole 4431 and is slidably connected to the inner wall of the second elongated hole 4431.

[0074] Reference Figure 4 and Figure 5 The installation of the fine-tuning seat 41 is achieved through the cooperation of the limiting member 43 and the mounting plate 44. Simultaneously, the sliding of the fine-tuning seat 41 is guided and limited, thus improving the stability of the installation and fine-tuning of the fine-tuning seat 41. Furthermore, since the limiting horizontal plate 432 and the guide vertical plate 431 are bolted together, it is convenient to install the fine-tuning seat 41 onto the mounting plate 44 and to remove the fine-tuning seat 41 from the mounting plate 44. The three-layer mounting plate 44 is bolted together with the magnetic plate 31, facilitating the disassembly and assembly of the mounting plate 44 and the replacement or maintenance of the internal structure of the mounting plate 44.

[0075] Reference Figure 6 and Figure 7 The fine-tuning mechanism 4 also includes a fine-tuning component 45, which includes a snap-fit ​​block 451 with a snap-fit ​​hole 4511 through it. The guide vertical plate 431 is inserted into the snap-fit ​​hole 4511. A fine-tuning groove 4422 is formed on the side of the intermediate plate 442 facing the first plate 441, and a guide elongated hole 4421 is formed at the bottom of the fine-tuning groove 4422. The snap-fit ​​block 451 is inserted into the fine-tuning groove 4422 and is slidably connected to the inner wall of the fine-tuning groove 4422 along the length direction of the guide elongated hole 4421.

[0076] Reference Figure 7 The fine-tuning assembly 45 also includes a fine-tuning rod 452, the length of which is set along the length of the guide hole 4421. The fine-tuning rod 452 is threadedly connected to the locking block 451. One end of the fine-tuning rod 452 is rotatably connected to the inner wall of the fine-tuning groove 4422, and the other end extends to the outer side of the intermediate plate 442. A fine-tuning screw 453 is coaxially connected to the fine-tuning rod 452.

[0077] With the cooperation of the fine-tuning rod 452 and the locking block 451, when the fine-tuning screw 453 is turned, the locking block 451 will move slightly along the length of the fine-tuning rod 452, which can realize the fine-tuning of the position of the fine-tuning seat 41, and thus the fine-tuning of the position of the permanent magnet 32.

[0078] Reference Figure 6 and Figure 7 A clearance slot 4423 is provided on the side of the intermediate plate 442 facing the first plate 441. The length of the clearance slot 4423 is set along the length of the guide hole 4421. One side of the clearance slot 4423 penetrates the corresponding side wall of the intermediate plate 442, and the other side of the clearance slot 4423 communicates with the fine-tuning slot 4422. The fine-tuning rod 452 is disposed in the clearance slot 4423. The clearance slot 4423 provides installation space for the fine-tuning rod 452.

[0079] The implementation principle of this application embodiment is as follows: Between uses of the microwave switch, the position of the permanent magnet 32 ​​between the two oscillating electromagnets 33 is fine-tuned by turning the fine-tuning screw 453. On one hand, during the production and assembly of the microwave switch, fine-tuning the position of the permanent magnet 32 ​​ensures the normal operation of the microwave switch. On the other hand, after maintenance or disassembly of the microwave switch, fine-tuning the position of the permanent magnet 32 ​​ensures the normal operation of the microwave switching tube after maintenance or disassembly.

[0080] Example 3:

[0081] A fail-safe microwave switch, as described above Figure 8 and Figure 9 The difference between this embodiment and Embodiment 2 is that it also includes a long adjustment mechanism 5, which includes a fine adjustment plate 51. A long adjustment groove 4424 is provided on the side of the intermediate plate 442 facing the first plate 441. The length direction of the long adjustment groove 4424 is along the length direction of the intermediate plate 442, and it penetrates one side wall of the intermediate plate 442 along its own length direction. The fine adjustment plate 51 is disposed on the intermediate plate 442, and its length direction is along the length direction of the intermediate plate 442. The fine adjustment plate 51 is inserted into the long adjustment groove 4424, and it is slidably connected to the inner side wall of the long adjustment groove 4424 along its own length direction.

[0082] Reference Figure 8 and Figure 10 The fine-tuning component 45 is disposed on the side of the fine-tuning plate 51 facing the first plate 441. Specifically, the fine-tuning groove 4422 and the clearance groove 4423 are both formed on the fine-tuning plate 51, and the fine-tuning rod 452 and the locking block 451 are also disposed on the fine-tuning plate 51.

[0083] Reference Figure 10 and Figure 11 The bottom of the fine-tuning groove 4422 is provided with a fine-tuning elongated hole 511. The length direction of the fine-tuning elongated hole 511 is set along the length direction of the fine-tuning plate 51, and the length of the fine-tuning elongated hole 511 is less than the length of the guide elongated hole 4421.

[0084] Reference Figure 5 and Figure 10 The guide vertical plate 431 is inserted into the fine-tuning elongated hole 511, and the guide vertical plate 431 is slidably connected to the inner wall of the fine-tuning elongated hole 511 along the length direction of the fine-tuning plate 51.

[0085] Reference Figure 10 and Figure 11 The opening of the fine-tuning elongated hole 511 is used to connect the first elongated hole 4411 and the guide elongated hole 4421, ensuring the installation and guidance of the guide vertical plate 431. At the same time, the opening of the fine-tuning elongated hole 511 ensures that the fine-tuning seat 41 can be finely adjusted along the length direction of the fine-tuning plate 51 under the action of the fine-tuning component 45, which enables the permanent magnet 32 ​​to perform fine-tuning function.

[0086] Reference Figure 8 and Figure 9 The long adjustment mechanism 5 also includes an automatic drive component 52, which includes a constant magnet 521 and a first electromagnet 522. The constant magnet 521 is disposed on one side of the width direction of the fine adjustment plate 51 and is fixedly connected to the fine adjustment plate 51. The first electromagnet 522 is located on the inner wall of the long adjustment groove 4424, and the first electromagnet 522 and the constant magnet 521 are arranged facing each other along the length direction of the fine adjustment plate 51.

[0087] When the first electromagnet 522 is de-energized, it attracts the permanent magnet 521, fixing the position of the fine-tuning plate 51 and placing the permanent magnet 32 ​​in its initial position. However, when a large-distance adjustment of the permanent magnet 32 ​​is required, the first electromagnet 522 is energized, causing it to repel the permanent magnet 521. The permanent magnet 521 then drives the fine-tuning plate 51 to slide, enabling large-distance adjustment of the permanent magnet 32.

[0088] Reference Figure 9 The long adjustment mechanism 5 also includes several positioning components 53. The several positioning components 53 are arranged sequentially and spaced on the inner side wall of the long adjustment groove 4424 along the length direction of the fine adjustment plate 51. The several positioning components 53 are located on one side of the width direction of the fine adjustment plate 51, and the permanent magnet 521 is located between the fine adjustment plate 51 and the positioning components 53 along the width direction of the fine adjustment plate 51.

[0089] Reference Figure 9The positioning component 53 includes a second electromagnet 531, and a positioning groove 532 is provided on the inner wall of the long adjustment slide 4424. The length direction of the positioning groove 532 is set along the width direction of the fine adjustment plate 51. The second electromagnet 531 is inserted into the positioning groove 532, and the second electromagnet 531 is slidably connected to the inner wall of the positioning groove 532 along the length direction of the positioning groove 532.

[0090] Reference Figure 9 The positioning assembly 53 also includes a positioning drive component 533, which includes a drive bolt 5331 and a drive spring 5332. The drive bolt 5331 is disposed on the side wall of the intermediate plate 442 and is threadedly connected to the intermediate plate 442. The drive bolt 5331 is axially arranged along the length direction of the positioning groove 532, and one end of the drive bolt 5331 abuts against the second electromagnet 531. The drive spring 5332 is located inside the positioning groove 532 and is sleeved on the outside of the drive bolt 5331. One end of the drive spring 5332 is connected to the corresponding second electromagnet 531, and the other end is connected to the inner side wall of the positioning groove 532.

[0091] Reference Figure 9 When the drive bolt 5331 is turned, it moves against the second electromagnet 531, causing the second electromagnet 531 to extend out of the positioning groove 532. At this time, the second electromagnet 531 is positioned directly opposite the permanent magnet 521 along the length of the fine-tuning plate 51. Conversely, when the drive bolt 5331 is turned in the opposite direction, the second electromagnet 531 retracts into the positioning groove 532 under the action of the drive spring 5332.

[0092] Reference Figure 9 The configuration of several positioning components 53 allows for a limiting function of the corresponding second electromagnet 531 when a specific positioning component 53 is selected for activation. When the first electromagnet 522 is energized, it repels the permanent magnet 521, causing the fine-tuning plate 51 to move until the permanent magnet 521 contacts the corresponding second electromagnet 531. When the fine-tuning plate 51 needs to be reset, the second electromagnet 531 is energized, repels the permanent magnet 521, and the fine-tuning plate 51 resets.

[0093] This allows the permanent magnet 32 ​​to reciprocate between two positions: an initial working position and a working position. The working position can be established by selecting the corresponding positioning component 53 according to actual usage needs. Before power is cut off, the permanent magnet 32 ​​moves to the initial position, where it establishes an unbalanced magnetic field, resetting the magnetic pendulum 21. Just before power is applied, the permanent magnet 32 ​​moves to the working position, where it assists in attracting or repelling one end of the magnetic pendulum 21, thereby reducing the driving current required for the oscillating electromagnet 33.

[0094] Reference Figure 9 The long adjustment mechanism 5 also includes a manual drive assembly 54, which includes a manual lever 541. The manual lever 541 is positioned along the width direction of the fine-tuning plate 51, with one end connected to the fine-tuning plate 51 and the other end extending to the outside of the intermediate plate 442. A manual groove 542 is formed through the inner wall of the long adjustment slide 4424, located on the side of the fine-tuning plate 51 away from the permanent magnet 521. The manual lever 541 is disposed within the manual groove 542 and is slidably connected to the inner wall of the manual groove 542. This allows the manual lever 541 to manually adjust the fine-tuning plate 51 when the first electromagnet 522 or the second electromagnet 531 is not energized. At this time, the corresponding positioning assembly 53 can still limit the permanent magnet 521, thereby establishing the corresponding working position.

[0095] The implementation principle of this application embodiment is as follows: Before using the microwave switch, the positioning component 53 is selected, and the corresponding drive bolt 5331 is tightened to push the corresponding second electromagnet 531 out of the positioning groove 532, establishing the required working position. When using the microwave switch, before the swing electromagnet 33 is de-energized, the permanent magnet 32 ​​moves to the initial position. At this time, the permanent magnet 32 ​​establishes an unbalanced magnetic field, realizing the reset of the magnetic pendulum 21. Before the swing electromagnet 33 is energized, the permanent magnet 32 ​​moves to the working position. At this time, the permanent magnet 32 ​​assists in attracting or repelling one end of the magnetic pendulum 21, so that the magnetic force required for the magnetic pendulum 21 to continue rotating is smaller, which can reduce the driving current required by the swing electromagnet 33.

[0096] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fail-safe microwave switch, characterized in that, include: The connecting mechanism (1) includes a base shell (11), a first terminal (12), a second terminal (13) and a third terminal (14). The first terminal (12), the second terminal (13) and the third terminal (14) are sequentially arranged on the base shell (11). A push rod conductive assembly (15) is provided between the first terminal (12) and the second terminal (13) and between the second terminal (13) and the third terminal (14). The swing mechanism (2) includes a magnetic pendulum (21), the middle part of which is rotatably connected to the base shell (11), and the two ends of which are respectively arranged with the two push rod conductive components (15); The electromagnetic mechanism (3) includes a magnetic plate (31), which is spaced apart on one side of the base shell (11), and the magnetic pendulum (21) is located between the base shell (11) and the magnetic plate (31). Two swing electromagnets (33) are spaced apart on the magnetic plate (31). The swing electromagnets (33) are correspondingly arranged with the push rod conductive assembly (15), and one end of the magnetic pendulum (21) is located between the corresponding push rod conductive assembly (15) and the corresponding swing electromagnet (33). The magnetic plate (31) is also provided with a permanent magnet (32), which is located between the two swing electromagnets (33), and the distance between the permanent magnet (32) and one of the swing electromagnets (33) is smaller than the distance between the permanent magnet (32) and the other swing electromagnet (33). The magnetic plate (31) is arranged along the interval direction of the two swing electromagnets (33) along its length direction, and the permanent magnet (32) is slidably connected to the magnetic plate (31) along its length direction. The magnetic plate (31) is provided with a fine-tuning sliding hole (42), and the length direction of the fine-tuning sliding hole (42) is set along the length direction of the magnetic plate (31); The permanent magnet (32) is provided with a fine adjustment seat (41) on the side facing the magnetic guide plate (31). The fine adjustment seat (41) is inserted into the fine adjustment slide hole (42), and the fine adjustment seat (41) is slidably connected to the inner wall of the fine adjustment slide hole (42) along the length direction of the fine adjustment slide hole (42). The fine-tuning base (41) is made of magnetically conductive material; The fine-tuning seat (41) is detachably connected to the permanent magnet (32); The magnetic plate (31) is provided with a fine adjustment component (45), the fine adjustment component (45) includes a fine adjustment rod (452), the fine adjustment rod (452) is rotatably connected to the magnetic plate (31), and the fine adjustment rod (452) is threadedly connected to the fine adjustment seat (41); The length direction of the fine adjustment rod (452) is set along the length direction of the magnetic plate (31); One end of the fine adjustment rod (452) is coaxially connected to a fine adjustment screw (453); A fine-tuning plate (51) is provided on the magnetic plate (31). The length direction of the fine-tuning plate (51) is along the length direction of the magnetic plate (31), and the fine-tuning plate (51) is slidably connected to the magnetic plate (31) along its own length direction. The fine-tuning seat (41) is slidably connected to the fine-tuning plate (51) along the length of the fine-tuning plate (51), and the fine-tuning component (45) is disposed on the fine-tuning plate (51); an automatic drive component (52) is also disposed on the magnetic guide plate (31), and the automatic drive component (52) is used to drive the fine-tuning plate (51) to slide on the magnetic guide plate (31).

2. The fail-safe microwave switch according to claim 1, characterized in that, Both ends of the magnetic pendulum (21) are provided with springs (22), and the springs (22) are provided in a one-to-one correspondence with the push rod conductive assembly (15). The springs (22) are located between the corresponding push rod conductive assembly (15) and the magnetic pendulum (21).

3. A fail-safe microwave switch according to claim 1, characterized in that, Both ends of the magnetic pendulum (21) are provided with magnetic shielding plates (23), and the magnetic shielding plates (23) are provided in a one-to-one correspondence with the swing electromagnet (33). The magnetic shielding plates (23) are located between the corresponding swing electromagnet (33) and the magnetic pendulum (21).

4. A fail-safe microwave switch according to claim 1, characterized in that, The automatic drive assembly (52) includes a constant magnet (521) and a first electromagnet (522). The first electromagnet (522) is disposed on the magnetic plate (31), and the constant magnet (521) is disposed on the fine-tuning plate (51). The constant magnet (521) and the first electromagnet (522) are disposed opposite each other along the length direction of the fine-tuning plate (51). The magnetic guide plate (31) is also provided with a positioning component (53), which includes a second electromagnet (531). The first electromagnet (522) and the second electromagnet (531) are spaced apart along the length direction of the fine-tuning plate (51), and the constant magnet (521) is located between the first electromagnet (522) and the second electromagnet (531).

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