Failure protection type microwave switch

Abstract

The invention relates to a failure protection type microwave switch, and relates to the technical field of microwave switches, the microwave switch comprises a connecting mechanism, the connecting mechanism comprises a base shell, a first terminal, a second terminal and a third terminal, and push rod conductive assemblies are arranged between the first terminal and the second terminal and between the second terminal and the third terminal; the swinging mechanism comprises a magnetic-conductive swinging part, and the middle part of the magnetic-conductive swinging part is rotationally connected with the base shell; the electromagnetic mechanism comprises a magnetic conductive plate, a magnetic conductive swing is located between the base shell and the magnetic conductive plate, two swing electromagnets are arranged on the magnetic conductive plate at intervals, the swing electromagnets and the push rod conductive assemblies are arranged in a one-to-one correspondence mode, and one end of the magnetic conductive swing is located between the corresponding push rod conductive assembly and the corresponding swing electromagnet; a permanent magnet is further arranged on the concentrating flux plate and located between the two swing electromagnets, and the distance between the permanent magnet and one swing electromagnet is smaller than the distance between the permanent magnet and the other swing electromagnet. The driving current of the swing electromagnet can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of microwave switches, and in particular to a failure protection type microwave switch. Background Art

[0002] Microwave switches, also known as RF switches, are widely used in RF / microwave systems, such as time multiplexers, time-division channel selection, pulse modulation, transceiver switches, beam adjustment, etc. RF switches are usually used in automated control circuits. RF switches are actually an automatic switch that uses a small current to control a large current.

[0003] At present, commonly used microwave switches mainly include connection mechanisms and relay mechanisms. The connection mechanism includes several terminals, and a conductive sheet is provided between the two corresponding terminals that need to be connected. A push column is provided on the conductive sheet. The push column pushes the conductive sheet to overlap the corresponding two terminals, thereby establishing a signal transmission path between the corresponding two terminals. In this process, the driving of the push column is realized by the relay mechanism.

[0004] A common relay mechanism includes a magnetic pendulum and two electromagnets. The structure of the magnetic pendulum is similar to that of a seesaw. The two electromagnets are symmetrically arranged at both ends of the magnetic pendulum. By energizing the two electromagnets, one electromagnet attracts the corresponding end of the magnetic pendulum, and the other electromagnet repels the corresponding end of the magnetic pendulum. At this time, the magnetic pendulum swings, and then one end of the magnetic pendulum will resist the corresponding push column, realizing the driving function of the push column.

[0005] Since the magnetic holding microwave switch needs to restore to its initial state after power failure, the magnetic pendulum needs to be able to reset when the electromagnet is powered off. For this reason, a reset spring is often added to one end of the existing magnetic pendulum. When the swing electromagnet is powered off, the reset spring will push the magnetic pendulum back to its original state.

[0006] Regarding the above-mentioned related technologies, due to the elastic force of the reset spring, when the electromagnet drives the magnetic pendulum to rotate, the magnetic pendulum needs to overcome the elastic force of the reset spring. This requires the electromagnet to have a greater magnetic force, and thus requires a greater driving current, which increases energy consumption. Summary of the invention

[0007] The present application provides a failure protection type microwave switch, the purpose of which is to achieve automatic resetting of a magnetic pendulum without using a resetting spring, reduce the magnetic force required for the magnetic pendulum to switch states, and thereby reduce the driving current of the swing electromagnet.

[0008] The present application provides a failure protection type microwave switch adopts the following technical solution: A failure protection type microwave switch comprises a connecting mechanism, comprising a base shell, a first terminal, a second terminal and a third terminal, wherein the first terminal, the second terminal and the third terminal are sequentially arranged on the base shell, and a push rod conductive component is arranged between the first terminal and the second terminal and between the second terminal and the third terminal; a swing mechanism comprises a magnetic pendulum, wherein the middle part of the magnetic pendulum is rotatably connected to the base shell, and the two ends of the magnetic pendulum are arranged in a one-to-one correspondence with the two push rod conductive components; an electromagnetic mechanism comprises a magnetic plate, wherein the magnetic plate is arranged at one side of the base shell at intervals, and the magnetic pendulum is located between the base shell and the magnetic plate, and two swinging electromagnets are arranged on the magnetic plate at intervals, wherein the swinging electromagnets are arranged in a one-to-one correspondence with the push rod conductive components, and one end of the magnetic pendulum is located between the corresponding push rod conductive component and the corresponding swinging electromagnet; a permanent magnet is also arranged on the magnetic plate, wherein the permanent magnet is located between the two swinging electromagnets, and the distance between the permanent magnet and one swinging electromagnet is smaller than the distance between the permanent magnet and the other swinging electromagnet.

[0009] By adopting the above technical solution, the connecting mechanism can connect external cables through the setting of the first terminal, the second terminal and the third terminal. The setting of the push rod conductive component can connect or cut off the signal transmission path between the second terminal and the corresponding first terminal or the corresponding third terminal. The swing mechanism is provided with a magnetic pendulum. When the magnetic pendulum rotates, the end of the magnetic pendulum rotating toward the base shell will conflict with the corresponding push rod conductive component, thereby realizing the driving of the corresponding push rod conductive component. The electromagnetic mechanism can realize the driving of the magnetic pendulum through the cooperation of two swinging electromagnets when the two swinging electromagnets are energized. The cooperation of the connecting mechanism, the swinging mechanism and the electromagnetic mechanism can realize the basic functions of the microwave switch.

[0010] On this basis, a permanent magnet is arranged between the two magnetic pendulums, and the distance between the permanent magnet and one swinging electromagnet is smaller than the distance between the permanent magnet and the other swinging electromagnet. The permanent magnet is arranged in such a position that an asymmetric and unbalanced magnetic field is formed between the permanent magnet, the magnetic plate and the two swinging electromagnets.

[0011] Due to the existence of unbalanced magnetic field, when the two swinging electromagnets are powered off, the magnetic force of the swinging electromagnet closer to the permanent magnet is larger, while the magnetic force of the other swinging electromagnet is smaller. This makes the suction forces of the corresponding swinging electromagnets at both ends of the magnetic pendulum different in magnitude. This makes the end of the magnetic pendulum close to the swinging electromagnet with smaller magnetic force move toward the base shell.

[0012] This arrangement allows the magnetic pendulum to rotate under the drive of the two swinging electromagnets when the swinging electromagnets are powered on; when the swinging electromagnets are powered off, the magnetic pendulum rotates in the opposite direction under the action of the unbalanced magnetic field to reset the magnetic pendulum. Since there is no resistance to the magnetic pendulum from the reset spring, the magnetic pendulum requires less magnetic force when working, and thus the required driving current is smaller.

[0013] Optionally, reeds are provided at both ends of the magnetic pendulum, and the reeds are provided in a one-to-one correspondence with the push rod conductive components, and the reeds are located between the corresponding push rod conductive components and the magnetic pendulum.

[0014] By adopting the above technical solution and setting the reed, when the magnetic pendulum contacts the corresponding push rod conductive component, the corresponding reed is deformed, thereby increasing the contact stability of the magnetic pendulum to the push rod conductive component.

[0015] Optionally, magnetic isolation plates are provided at both ends of the magnetic pendulum, the magnetic isolation plates are provided in a one-to-one correspondence with the swing electromagnets, and the magnetic isolation plates are located between the corresponding swing electromagnets and the magnetic pendulum.

[0016] By adopting the above technical solution, the magnetic isolation sheet is arranged between the swinging electromagnet and the magnetic pendulum, which plays a role in isolating the magnetic field.

[0017] Optionally, the length direction of the magnetic conductive plate is arranged along the spacing direction of the two swing electromagnets, and the permanent magnet is slidingly connected to the magnetic conductive plate along the length direction of the magnetic conductive plate.

[0018] By adopting the above technical solution, the permanent magnet is slidably connected to the magnetic conductive plate. Such a design enables the permanent magnet to be fine-tuned in position between the two swinging electromagnets, thereby achieving fine-tuning of the magnetic field.

[0019] Optionally, a fine-tuning slide hole is provided on the magnetic conductive plate, and the length direction of the fine-tuning slide hole is arranged along the length direction of the magnetic conductive plate; a fine-tuning seat is provided on the side of the permanent magnet facing the magnetic conductive plate, the fine-tuning seat is plug-fitted with the fine-tuning slide hole, and the fine-tuning seat is slidably connected to the inner side wall of the fine-tuning slide hole along the length direction of the fine-tuning slide hole; the fine-tuning seat is made of magnetic conductive material.

[0020] By adopting the above technical solution, the fine-tuning sliding hole and the fine-tuning seat are arranged in coordination, which can guide and limit the sliding of the permanent magnet, thereby improving the stability of the fine-tuning of the permanent magnet position. The fine-tuning seat is made of magnetic conductive material to ensure the transmission of the magnetic field. The fine-tuning sliding hole and the fine-tuning seat are used in coordination, so that the microwave switch can ensure its normal operation by fine-tuning the position of the permanent magnet after production, maintenance or disassembly, thereby improving the flexibility and maintainability of the microwave switch.

[0021] Optionally, the fine-tuning seat is detachably connected to the permanent magnet.

[0022] By adopting the above technical solution and the detachable connection design between the fine-tuning seat and the permanent magnet, the replacement and maintenance of the permanent magnet becomes more convenient.

[0023] Optionally, a fine-tuning assembly is provided on the magnetic conductive plate, and the fine-tuning assembly includes a fine-tuning rod, the fine-tuning rod is rotatably connected to the magnetic conductive plate, and the fine-tuning rod is threadedly connected to the fine-tuning seat; the length direction of the fine-tuning rod is arranged along the length direction of the magnetic conductive plate; and a fine-tuning screw is coaxially connected to one end of the fine-tuning rod.

[0024] By adopting the above technical solution, the fine-tuning component is set up, including a fine-tuning rod and a fine-tuning screw, and the fine-tuning rod is connected to the fine-tuning seat by a thread, so when the fine-tuning screw is turned, the fine-tuning rod rotates, and then the fine-tuning seat moves along the length direction of the fine-tuning rod, which can achieve fine-tuning of the position of the permanent magnet.

[0025] Optionally, a fine-tuning plate is provided on the magnetic conductive plate, the length direction of the fine-tuning plate is arranged along the length direction of the magnetic conductive plate, and the fine-tuning plate is slidably connected to the magnetic conductive 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 assembly is arranged on the fine-tuning plate; an automatic driving assembly is also provided on the magnetic conductive plate, and the automatic driving assembly is used to drive the fine-tuning plate to slide on the magnetic conductive plate.

[0026] By adopting the above technical solution, the fine-tuning plate and the automatic drive assembly are set up, so that the microwave switch can automatically adjust the position of the permanent magnet. This can establish an initial position and a working position between the two swinging electromagnets, and the permanent magnet can reciprocate between the initial position and the working position with the cooperation of the fine-tuning plate and the automatic drive assembly. Then, before the swinging electromagnet is powered off, the permanent magnet moves to the initial position, at which time the permanent magnet establishes an unbalanced magnetic field to reset the magnetic pendulum; on the contrary, before the electromagnet is powered on, the permanent magnet moves to the working position, at which time the permanent magnet assists in attracting or repelling one end of the magnetic pendulum, thereby reducing the driving current required for the swinging electromagnet.

[0027] Optionally, the automatic drive component includes a permanent magnet and a first electromagnet, the first electromagnet is arranged on the magnetic conductive plate, the permanent magnet is arranged on the fine-tuning plate, and the permanent magnet and the first electromagnet are arranged opposite to each other along the length direction of the fine-tuning plate; a positioning component is also arranged on the magnetic conductive plate, the positioning component includes a second electromagnet, the first electromagnet and the second electromagnet are arranged at intervals along the length direction of the fine-tuning plate, and the permanent magnet is located between the first electromagnet and the second electromagnet.

[0028] By adopting the above technical solution, the automatic drive component realizes the automatic driving of the fine-tuning plate through the coordinated setting of the permanent magnet and the first electromagnet. The setting of the second electromagnet in the positioning component can realize the limiting of the permanent magnet, and thus the limiting of the fine-tuning plate. When the first electromagnet is energized, the first electromagnet repels the permanent magnet, and the fine-tuning plate moves until the permanent magnet contacts the corresponding second electromagnet. When the fine-tuning plate needs to be reset, the second electromagnet is energized, the second electromagnet repels the permanent magnet, and the fine-tuning plate is reset.

[0029] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application realizes automatic resetting of the magnetic pendulum by setting the position of the permanent magnet when the swing electromagnet is powered off. Since there is no resistance of the reset spring to the magnetic pendulum, the magnetic force required for the magnetic pendulum to work is smaller, and thus the required driving current is smaller.

[0030] 2. The permanent magnet of the present application can be fine-tuned in position between the two swinging electromagnets, thereby fine-tuning the magnetic field distribution, so that the microwave switch can adapt to different working conditions and environments.

[0031] 3. The permanent magnet of the present application can automatically reciprocate between the initial position and the working position. When the permanent magnet moves to the initial position, the permanent magnet establishes an unbalanced magnetic field, which can realize the resetting of the magnetic pendulum; when the permanent magnet moves to the working position, the permanent magnet assists in attracting or repelling one end of the magnetic pendulum, thereby reducing the driving current required for the swinging electromagnet. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the microwave switch of Example 1 of the present application.

[0033] Figure 2 It is a schematic diagram of the partial cross-sectional structure of the microwave switch of Example 1 of the present application.

[0034] Figure 3 It is a schematic diagram of the overall structure of the microwave switch of Example 2 of the present application.

[0035] Figure 4 It is a schematic diagram of the overall structure of the permanent magnet and fine-tuning mechanism of Example 2 of the present application.

[0036] Figure 5 It is a schematic diagram of the overall structure of the fine-tuning seat of Example 2 of the present application.

[0037] Figure 6 It is a schematic cross-sectional structure diagram of the permanent magnet and fine-tuning mechanism of Example 2 of the present application.

[0038] Figure 7 It is a schematic diagram of the overall structure of the middle plate of Example 2 of the present application.

[0039] Figure 8 It is a schematic diagram of the overall structure of the microwave switch of Example 3 of the present application.

[0040] Fig. 9 It is a schematic diagram of the overall structure of the middle plate of Example 3 of the present application.

[0041] Fig.10 It is a schematic diagram of the overall structure of the fine-tuning plate of Example 3 of the present application.

[0042] Fig.11 It is a schematic diagram of the overall structure of the middle plate and the second plate of Example 3 of the present application.

[0043] In the figure, 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 component; 151, conductive sheet; 152, push column; 153, first spring; 2, swing mechanism; 21, magnetic pendulum; 22, reed; 23, magnetic isolation sheet; 3, electromagnetic mechanism; 31, magnetic plate; 32, permanent magnet; 321, plug column; 33, swing electromagnet; 4, fine-tuning mechanism; 41, fine-tuning seat; 411, slot; 42, fine-tuning sliding hole; 43, limiter; 431, guide vertical plate; 432, limit horizontal plate; 44, mounting plate; 441, first plate; 4411, first long hole; 442 , middle plate; 4421, guide long hole; 4422, fine-tuning slot; 4423, give way long slot; 4424, long adjustment slide; 443, second plate; 4431, second long hole; 45, fine-tuning assembly; 451, clamping block; 4511, clamping hole; 452, fine-tuning rod; 453, fine-tuning screw; 5, long adjustment mechanism; 51, fine-tuning plate; 511, fine-tuning long hole; 52, automatic drive assembly; 521, permanent magnet; 522, first electromagnet; 53, positioning assembly; 531, second electromagnet; 532, positioning slot; 533, positioning drive member; 5331, drive bolt; 5332, drive spring; 54, manual drive assembly; 541, manual lever; 542, manual slot. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1 -Attached Fig.11 , further details of this application are given.

[0045] Embodiment 1: A fail-safe microwave switch, referring to Figure 1 and Figure 2 , including a connecting mechanism 1, a swinging mechanism 2 and an electromagnetic mechanism 3.

[0046] Reference Figure 1 and Figure 2The 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 opened in the base shell 11. The first terminal 12, the second terminal 13 and the third terminal 14 are sequentially arranged 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.

[0047] Reference Figure 1 and Figure 2 A push rod conductive component 15 is provided between the first terminal 12 and the second terminal 13 and between the second terminal 13 and the third terminal 14 , and the push rod conductive component 15 is located in the connecting cavity 111 .

[0048] Reference Figure 1 and Figure 2 Since the push rod conductive component 15 between the first terminal 12 and the second terminal 13 and the push rod conductive component 15 between the second terminal 13 and the third terminal 14 have the same structure, this embodiment takes the push rod conductive component 15 between the first terminal 12 and the second terminal 13 as an example for description.

[0049] Reference Figure 1 and Figure 2 The push rod conductive component 15 includes a conductive sheet 151 and a push column 152. The length direction of the conductive sheet 151 is arranged along the spacing direction of 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 provided on the side of the base shell 11 away from the first terminal 12. The push column 152 is plugged into the push hole 112. The push column 152 is slidably connected to the inner wall of the push hole 112 along its own axial direction. One end of the push column 152 extends to the outside of the base shell 11, and the other end extends into the connection cavity 111 and is connected to the corresponding conductive sheet 151. The push column 152 and the conductive sheet 151 are both slidably connected to the inner wall of the connection cavity 111.

[0050] The structure of the push rod conductive component 15 is set up so that the conductive sheet 151 can be moved by pushing the corresponding push column 152 outside the base shell 11, 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 satisfying the function of the push rod conductive component 15.

[0051] Reference Figure 1 and Figure 2 The push rod conductive assembly 15 further includes a first spring 153, which is sleeved on the corresponding push column 152, and one end of the first spring 153 is connected to the push column 152, and the other end is in contact with the base shell 11. The first spring 153 is provided to facilitate the reset of the push column 152 and the conductive sheet 151.

[0052] Reference Figure 1 and Figure 2The 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 opened. The magnetic pendulum 21 is rotatably connected to the base shell 11 through a mounting frame in the middle of its length direction. In addition, two ends of the magnetic pendulum 21 are arranged in a one-to-one correspondence with two push posts 152, and one end of the push post 152 along its own axial direction is arranged directly opposite to the end corresponding to the magnetic pendulum 21.

[0053] With such a structural arrangement, 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 axial direction, thereby achieving the driving of the push post 152.

[0054] Reference Figure 1 and Figure 2 , the magnetic pendulum 21 is provided with reeds 22 at both ends along its length direction, and the reeds 22 are 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 contacts the corresponding reed 22. The provision of the reeds 22 can improve the contact stability of the magnetic pendulum 21 against the push post 152.

[0055] Reference Figure 1 and Figure 2 Magnetic isolation sheets 23 are provided at both ends of the length direction of the magnetic pendulum 21, and the magnetic isolation sheets 23 are located on the side of the magnetic pendulum 21 away from the base shell 11. The magnetic isolation sheets 23 have the function of magnetic field isolation to prevent interference with the magnetic field required by the present application.

[0056] Reference Figure 1 and Figure 2 The electromagnetic mechanism 3 includes a magnetic plate 31, a permanent magnet 32 ​​and two swinging electromagnets 33. The magnetic plate 31 is arranged on the side of the base shell 11 where the push hole 112 is opened. The permanent magnet 32, the swinging electromagnet 33 and the magnetic pendulum 21 are all arranged on the side of the magnetic plate 31 facing the base shell 11, and the permanent magnet 32 ​​and the swinging electromagnet 33 are both located between the magnetic pendulum 21 and the magnetic plate 31.

[0057] Reference Figure 1 and Figure 2 The axial directions of the two swinging electromagnets 33 are arranged along the spacing direction of the base shell 11 and the magnetic plate 31, the two swinging electromagnets 33 are arranged at intervals along the length direction of the magnetic plate 31, and the two ends of the magnetic pendulum 21 are arranged one-to-one with the two swinging electromagnets 33, one end of the swinging electromagnet 33 is connected to the magnetic plate 31, and the other end faces the corresponding magnetic pendulum 21.

[0058] Due to the setting of the electromagnetic mechanism 3, by controlling the power supply of the two swinging electromagnets 33, one swinging electromagnet 33 generates an attractive force on the corresponding end of the magnetic pendulum 21, and the other swinging electromagnet 33 generates a repulsive force on the corresponding end of the magnetic pendulum 21. At this time, the magnetic pendulum 21 swings, thereby realizing the driving of the corresponding push column 152.

[0059] Reference Figure 1 and Figure 2 The permanent magnet 32 ​​is disposed between the two swinging electromagnets 33 along the length direction of the magnetic conductive plate 31, and one end of the permanent magnet 32 ​​in the length direction is connected to the magnetic conductive plate 31, and the other end is disposed toward the magnetic conductive pendulum 21. In this embodiment, the distance between the permanent magnet 32 ​​and one swinging electromagnet 33 is smaller than the distance between the permanent magnet 32 ​​and the other swinging electromagnet 33.

[0060] The position setting of the permanent magnet 32 ​​forms an asymmetric and unbalanced magnetic field between the permanent magnet 32, the magnetic plate 31 and the two swinging electromagnets 33. When the two swinging electromagnets 33 are powered off, the swinging electromagnet 33 closer to the permanent magnet 32 ​​has a larger magnetic force, while the other swinging electromagnet 33 has a smaller magnetic force. At this time, the two ends of the magnetic pendulum 21 are subjected to different amounts of attractive forces, which causes the end of the magnetic pendulum 21 close to the swinging electromagnet 33 with smaller magnetic force to move toward the base shell 11, thereby pushing the corresponding push column 152 to move.

[0061] The implementation principle of the embodiment of the present application is as follows: when the swinging electromagnet 33 is powered on, one swinging electromagnet 33 repels the corresponding end of the magnetic pendulum 21, and the other swinging electromagnet 33 attracts the corresponding end of the magnetic pendulum 21, and the magnetic pendulum 21 swings at this time, realizing the driving of the corresponding push post 152. When the swinging electromagnet 33 is powered off, since the attraction force of the swinging electromagnet 33 closer to the permanent magnet 32 ​​on the magnetic pendulum 21 is greater than the attraction force of the other swinging electromagnet 33 on the magnetic pendulum 21, at this time, under the cooperation of the unbalanced attraction force, the magnetic pendulum 21 swings until the magnetic pendulum 21 realizes the driving of another push post 152.

[0062] Since there is no resistance of the return spring to 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.

[0063] Embodiment 2: A fail-safe microwave switch, referring to Figure 3 and Figure 4The difference between this embodiment and the embodiment 1 is that it also includes a fine-tuning mechanism 4, the fine-tuning mechanism 4 includes a fine-tuning seat 41, the fine-tuning seat 41 is arranged on the magnetic conductive plate 31, and the permanent magnet 32 ​​is detachably connected to the fine-tuning seat 41. The magnetic conductive plate 31 is provided with a fine-tuning sliding hole 42, the length direction of the fine-tuning sliding hole 42 is arranged along the length direction of the magnetic conductive plate 31, the fine-tuning seat 41 is plugged and matched with the fine-tuning sliding hole 42, and the fine-tuning seat 41 is slidably connected to the inner side wall of the fine-tuning sliding hole 42 along the length direction of the fine-tuning sliding hole 42. The fine-tuning seat 41 is made of magnetic conductive material.

[0064] The fine-tuning seat 41 is provided to facilitate installation of the permanent magnet 32 ​​, and the matching arrangement of the fine-tuning sliding hole 42 and the fine-tuning seat 41 facilitates fine-tuning of the position of the permanent magnet 32 ​​.

[0065] Reference Figure 5 and Figure 6 The side of the fine-tuning seat 41 facing the permanent magnet 32 ​​is provided with a slot 411, and the side of the permanent magnet 32 ​​facing the fine-tuning seat 41 is provided with a plug-in column 321, and the plug-in column 321 is plugged into the slot 411. Such a structural setting realizes a detachable connection between the permanent magnet 32 ​​and the fine-tuning seat 41.

[0066] Reference Figure 5 and Figure 6 A limiting member 43 is also provided on the fine-tuning seat 41, and the limiting member 43 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.

[0067] Reference Figure 3 and Figure 4 A mounting plate 44 is also provided on the magnetic conductive plate 31, and the mounting plate 44 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 sequentially arranged on the side of the magnetic conductive plate 31 away from the permanent magnet 32, and the first plate 441 is located between the magnetic conductive 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 conductive plate 31 by bolts.

[0068] Reference Figure 3 and Figure 6A first long hole 4411 is formed on the first plate 441, a guide long hole 4421 is formed on the middle plate 442, and a second long hole 4431 is formed on the second plate 443. The length directions of the first long hole 4411, the second long hole 4431, the guide long hole 4421 and the fine-tuning sliding hole 42 are the same, and the fine-tuning sliding hole 42, the first long hole 4411, the guide long hole 4421 and the second long hole 4431 are connected in sequence along the thickness direction of the magnetic conductive plate 31.

[0069] Reference Figure 5 and Figure 6 The fine-tuning seat 41 is inserted in the first long hole 4411, and the fine-tuning seat 41 is slidably connected to the inner wall of the first long hole 4411; the guide vertical plate 431 is inserted in the guide long hole 4421, and the guide vertical plate 431 is slidably connected to the inner wall of the guide long hole 4421; the limiting horizontal plate 432 is inserted in the second long hole 4431, and the limiting horizontal plate 432 is slidably connected to the inner wall of the second long hole 4431.

[0070] Reference Figure 4 and Figure 5 , through the coordinated arrangement of the limiting member 43 and the mounting plate 44, the installation of the fine-tuning seat 41 can be realized, and the sliding of the fine-tuning seat 41 can be guided and limited, which can improve the stability of the installation and fine-tuning of the fine-tuning seat 41. In addition, since the limiting horizontal plate 432 and the guide vertical plate 431 are connected by bolts, it is convenient to install the fine-tuning seat 41 on the mounting plate 44, and it is also convenient to remove the fine-tuning seat 41 from the mounting plate 44; and the three-layer mounting plate 44 is connected to the magnetic conductive plate 31 by bolts, which is convenient for disassembling the mounting plate 44, and also for replacing or maintaining the structure inside the mounting plate 44.

[0071] Reference Figure 6 and Figure 7 The fine-tuning mechanism 4 further includes a fine-tuning assembly 45, which includes a clamping block 451, a clamping hole 4511 is formed through the clamping block 451, and the guide vertical plate 431 is plugged into the clamping hole 4511. A fine-tuning groove 4422 is formed on the side of the middle plate 442 facing the first plate 441, and a guide long hole 4421 is formed at the bottom of the fine-tuning groove 4422. The clamping block 451 is inserted into the fine-tuning groove 4422, and the clamping block 451 is slidably connected to the inner side wall of the fine-tuning groove 4422 along the length direction of the guide long hole 4421.

[0072] Reference Figure 7 The fine-tuning assembly 45 further includes a fine-tuning rod 452, the length direction of which is arranged along the length direction of the guide slot 4421, and the fine-tuning rod 452 is threadedly connected to the clamping block 451. One end of the fine-tuning rod 452 is rotatably connected to the inner wall of the fine-tuning slot 4422, and the other end extends to the outer side of the middle plate 442, and a fine-tuning screw 453 is coaxially connected to the fine-tuning rod 452.

[0073] By cooperating with the fine-tuning rod 452 and the clamping block 451 , when the fine-tuning screw 453 is turned, the clamping block 451 will move slightly along the length direction of the fine-tuning rod 452 , thereby achieving fine-tuning of the position of the fine-tuning seat 41 and further achieving fine-tuning of the position of the permanent magnet 32 ​​.

[0074] Reference Figure 6 and Figure 7 A long clearance groove 4423 is provided on one side of the middle plate 442 facing the first plate 441. The length direction of the long clearance groove 4423 is arranged along the length direction of the guide long hole 4421. One side of the long clearance groove 4423 in the length direction penetrates the corresponding side wall of the middle plate 442. The other side of the long clearance groove 4423 in the length direction is connected to the fine-tuning groove 4422. The fine-tuning rod 452 is arranged in the long clearance groove 4423. The opening of the long clearance groove 4423 provides an installation space for the fine-tuning rod 452.

[0075] The implementation principle of the embodiment of the present application is: before using the microwave switch, the position of the permanent magnet 32 ​​between the two swing electromagnets 33 is fine-tuned by turning the fine-tuning screw 453. On the one hand, when producing and assembling the microwave switch, the microwave switch can be guaranteed to work properly by fine-tuning the position of the permanent magnet 32. On the other hand, after the microwave switch is maintained or disassembled, the position of the permanent magnet 32 ​​is fine-tuned to ensure that the microwave open tube can work properly after maintenance or disassembly.

[0076] Embodiment 3: A fail-safe microwave switch, referring to Figure 8 and Fig. 9 The difference between this embodiment and the second embodiment is that it further comprises a length adjustment mechanism 5, which comprises a fine adjustment plate 51. A length adjustment slot 4424 is provided on one side of the middle plate 442 facing the first plate 441. The length direction of the length adjustment slot 4424 is arranged along the length direction of the middle plate 442, and the length adjustment slot 4424 penetrates a side wall corresponding to the length direction of the middle plate 442 along one side of its own length direction. The fine adjustment plate 51 is arranged on the middle plate 442, and the length direction of the fine adjustment plate 51 is arranged along the length direction of the middle plate 442. The fine adjustment plate 51 is inserted into the length adjustment slot 4424, and the fine adjustment plate 51 is slidably connected with the inner side wall of the length adjustment slot 4424 along its own length direction.

[0077] Reference Figure 8 and Fig.10 The fine-tuning assembly 45 is arranged on the side of the fine-tuning plate 51 facing the first plate 441. Specifically, the fine-tuning slot 4422 and the long slot 4423 are both provided on the fine-tuning plate 51, and the fine-tuning rod 452 and the clamping block 451 are also both provided on the fine-tuning plate 51.

[0078] Reference Fig.10 and Fig.11A fine-tuning long hole 511 is provided at the bottom of the fine-tuning groove 4422 , and the length direction of the fine-tuning long hole 511 is arranged along the length direction of the fine-tuning plate 51 , and the length of the fine-tuning long hole 511 is smaller than the length of the guide long hole 4421 .

[0079] Reference Figure 5 and Fig.10 The guide vertical plate 431 is plugged into and matched with the fine-tuning long hole 511 , and the guide vertical plate 431 is slidably connected to the inner side wall of the fine-tuning long hole 511 along the length direction of the fine-tuning plate 51 .

[0080] Reference Fig.10 and Fig.11 The fine-tuning slot 511 is provided to connect the first slot 4411 and the guide slot 4421, so as to ensure the installation and guidance of the guide vertical plate 431. At the same time, the fine-tuning slot 511 ensures that the fine-tuning seat 41 can be fine-tuned along the length direction of the fine-tuning plate 51 under the action of the fine-tuning assembly 45, so as to realize the fine-tuning function of the permanent magnet 32.

[0081] Reference Figure 8 and Fig. 9 The length adjustment mechanism 5 further includes an automatic drive assembly 52, which includes a permanent magnet 521 and a first electromagnet 522. The permanent magnet 521 is arranged on one side of the width direction of the fine adjustment plate 51, and the permanent magnet 521 is fixedly connected to the fine adjustment plate 51. The first electromagnet 522 is located on the inner wall of the length adjustment slot 4424, and the first electromagnet 522 and the permanent magnet 521 are arranged opposite to each other along the length direction of the fine adjustment plate 51.

[0082] When the first electromagnet 522 is powered off, the first electromagnet 522 and the permanent magnet 521 are attracted, and the position of the fine-tuning plate 51 is fixed, and the permanent magnet 32 ​​is at the initial position. When the permanent magnet 32 ​​needs to be adjusted over a large distance, the first electromagnet 522 is powered on, and the first electromagnet 522 and the permanent magnet 521 are repelled, and the permanent magnet 521 drives the fine-tuning plate 51 to slide, so that the permanent magnet 32 ​​can be adjusted over a large distance.

[0083] Reference Fig. 9 The length adjustment mechanism 5 also includes a plurality of positioning components 53, which are arranged on the inner wall of the length adjustment slot 4424 in sequence and at intervals along the length direction of the fine-tuning plate 51, and the plurality of positioning components 53 are located on one side in the width direction of the fine-tuning plate 51, and the permanent magnet 521 is located between the fine-tuning plate 51 and the positioning components 53 along the width direction of the fine-tuning plate 51.

[0084] Reference Fig. 9The positioning assembly 53 includes a second electromagnet 531. A positioning groove 532 is provided on the inner side wall of the length adjustment slide groove 4424. The length direction of the positioning groove 532 is arranged along the width direction of the fine adjustment plate 51. The second electromagnet 531 is plug-fitted with the positioning groove 532, and the second electromagnet 531 is slidably connected with the inner side wall of the positioning groove 532 along the length direction of the positioning groove 532.

[0085] Reference Fig. 9 The positioning assembly 53 further includes a positioning driving member 533, which includes a driving bolt 5331 and a driving spring 5332. The driving bolt 5331 is disposed on the side wall of the middle plate 442, and the driving bolt 5331 is threadedly connected to the middle plate 442. The driving bolt 5331 is axially disposed along the length direction of the positioning groove 532, and one end of the driving bolt 5331 is in conflict with the second electromagnet 531. The driving spring 5332 is located in the positioning groove 532, and the driving spring 5332 is sleeved on the outside of the driving bolt 5331. One end of the driving spring 5332 is connected to the corresponding second electromagnet 531, and the other end is connected to the inner wall of the positioning groove 532.

[0086] Reference Fig. 9 When the driving bolt 5331 is turned, the driving bolt 5331 moves against the second electromagnet 531, so that the second electromagnet 531 extends out of the positioning slot 532. At this time, the second electromagnet 531 is arranged opposite to the permanent magnet 521 along the length direction of the fine-tuning plate 51. On the contrary, when the driving bolt 5331 is turned in the reverse direction, the second electromagnet 531 is retracted into the positioning slot 532 under the action of the driving spring 5332.

[0087] Reference Fig. 9 , the arrangement of several positioning components 53, when the corresponding positioning component 53 is selected and enabled, the corresponding second electromagnet 531 has a limiting function. When the first electromagnet 522 is energized, the first electromagnet 522 repels the permanent magnet 521, and the fine-tuning plate 51 moves until the permanent magnet 521 hits the corresponding second electromagnet 531. When the fine-tuning plate 51 needs to be reset, the second electromagnet 531 is energized, the second electromagnet 531 repels the permanent magnet 521, and the fine-tuning plate 51 is reset.

[0088] This enables the permanent magnet 32 ​​to reciprocate between two positions, i.e., one position is the initial position and the other position is the working position. The working position can be established by selecting the corresponding positioning component 53 according to the actual use needs. Before power is turned off, the permanent magnet 32 ​​moves to the initial position, at which time the permanent magnet 32 ​​establishes an unbalanced magnetic field to achieve the reset of the magnetic pendulum 21. Before power is turned on, the permanent magnet 32 ​​moves to the working position, at which time the permanent magnet 32 ​​assists in attracting or repelling one end of the magnetic pendulum 21, thereby reducing the driving current required for the swinging electromagnet 33.

[0089] Reference Fig. 9 The length adjustment mechanism 5 also includes a manual drive assembly 54, which includes a manual lever 541. The length direction of the manual lever 541 is arranged along the width direction of the fine-tuning plate 51. One end of the manual lever 541 is connected to the fine-tuning plate 51, and the other end extends to the outside of the middle plate 442. A manual slot 542 is provided through the inner wall of the length adjustment slot 4424. The manual slot 542 is located on the side of the fine-tuning plate 51 away from the permanent magnet 521 along the width direction of the fine-tuning plate 51. The manual lever 541 is arranged in the manual slot 542, and the manual lever 541 is slidably connected to the inner wall of the manual slot 542. In this way, when the first electromagnet 522 or the second electromagnet 531 cannot be energized, the manual lever 541 can realize manual adjustment of the fine-tuning plate 51, and the corresponding positioning assembly 53 can still limit the permanent magnet 521, thereby establishing a corresponding working station.

[0090] The implementation principle of the embodiment of the present application is as follows: before using the microwave switch, select the positioning assembly 53, and screw the corresponding driving bolt 5331 to push the corresponding second electromagnet 531 out of the positioning slot 532 to establish the required working position. When using the microwave switch, before the swing electromagnet 33 is powered off, the permanent magnet 32 ​​moves to the initial position, at which time the permanent magnet 32 ​​establishes an unbalanced magnetic field to reset the magnetic pendulum 21; before the swing electromagnet 33 is powered on, the permanent magnet 32 ​​moves to the working position, at which time the permanent magnet 32 ​​assists in attracting or repelling one end of the magnetic pendulum 21, and then the magnetic force required for the magnetic pendulum 21 to continue to rotate is smaller, which can reduce the driving current required by the swing electromagnet 33.

[0091] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fail-safe microwave switch, characterized in that: include: A connecting mechanism (1) comprising a base shell (11), a first terminal (12), a second terminal (13) and a third terminal (14), wherein the first terminal (12), the second terminal (13) and the third terminal (14) are arranged in sequence on the base shell (11), and a push rod conductive component (15) is arranged 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) comprises a magnetic pendulum (21), the middle portion of the magnetic pendulum (21) being rotatably connected to the base shell (11), and the two ends of the magnetic pendulum (21) being arranged in a one-to-one correspondence with the two push rod conductive components (15); The electromagnetic mechanism (3) comprises a magnetic conductive plate (31), the magnetic conductive plate (31) being arranged at intervals on one side of the base shell (11), and the magnetic conductive pendulum (21) being located between the base shell (11) and the magnetic conductive plate (31), two swinging electromagnets (33) being arranged at intervals on the magnetic conductive plate (31), the swinging electromagnets (33) being arranged in a one-to-one correspondence with the push rod conductive components (15), and one end of the magnetic conductive pendulum (21) being located between the corresponding push rod conductive component (15) and the corresponding swinging electromagnet (33); A permanent magnet (32) is also provided on the magnetic conductive plate (31), and the permanent magnet (32) 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 of the swing electromagnets (33).

2. A fail-safe microwave switch according to claim 1, characterized in that: Both ends of the magnetic pendulum (21) are provided with reeds (22), the reeds (22) are arranged in one-to-one correspondence with the push rod conductive components (15), and the reeds (22) are located between the corresponding push rod conductive components (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 isolation plates (23), the magnetic isolation plates (23) are arranged in a one-to-one correspondence with the swing electromagnets (33), and the magnetic isolation plates (23) are located between the corresponding swing electromagnets (33) and the magnetic pendulum (21).

4. A fail-safe microwave switch according to claim 1, characterized in that: The length direction of the magnetic conductive plate (31) is arranged along the spacing direction of the two swing electromagnets (33), and the permanent magnet (32) is slidably connected to the magnetic conductive plate (31) along the length direction of the magnetic conductive plate (31).

5. A fail-safe microwave switch according to claim 4, characterized in that: The magnetic conductive plate (31) is provided with a fine-tuning sliding hole (42), and the length direction of the fine-tuning sliding hole (42) is arranged along the length direction of the magnetic conductive plate (31); A fine-tuning seat (41) is provided on one side of the permanent magnet (32) facing the magnetic conductive plate (31), the fine-tuning seat (41) is plug-fitted with the fine-tuning sliding hole (42), and the fine-tuning seat (41) is slidably connected to the inner side wall of the fine-tuning sliding hole (42) along the length direction of the fine-tuning sliding hole (42); The fine-tuning seat (41) is made of magnetic conductive material.

6. A fail-safe microwave switch according to claim 5, characterized in that: The fine-tuning seat (41) is detachably connected to the permanent magnet (32).

7. A fail-safe microwave switch according to claim 5, characterized in that: A fine-tuning assembly (45) is provided on the magnetic conductive plate (31), the fine-tuning assembly (45) comprising a fine-tuning rod (452), the fine-tuning rod (452) being rotatably connected to the magnetic conductive plate (31), and the fine-tuning rod (452) being connected to the fine-tuning seat (41) via a thread; The length direction of the fine-tuning rod (452) is arranged along the length direction of the magnetic conductive plate (31); One end of the fine-tuning rod (452) is coaxially connected to a fine-tuning screw (453).

8. A fail-safe microwave switch according to claim 7, characterized in that: A fine-tuning plate (51) is provided on the magnetic conductive plate (31), the length direction of the fine-tuning plate (51) is arranged along the length direction of the magnetic conductive plate (31), and the fine-tuning plate (51) is slidably connected to the magnetic conductive 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 arranged on the fine-tuning plate (51); An automatic driving component (52) is also provided on the magnetic conductive plate (31), and the automatic driving component (52) is used to drive the fine-tuning plate (51) to slide on the magnetic conductive plate (31).

9. A fail-safe microwave switch according to claim 8, characterized in that: The automatic drive component (52) comprises a permanent magnet (521) and a first electromagnet (522), wherein the first electromagnet (522) is arranged on the magnetic conductive plate (31), and the permanent magnet (521) is arranged on the fine-tuning plate (51), and the permanent magnet (521) and the first electromagnet (522) are arranged opposite each other along the length direction of the fine-tuning plate (51); A positioning assembly (53) is also provided on the magnetic conductive plate (31), the positioning assembly (53) comprising a second electromagnet (531), the first electromagnet (522) and the second electromagnet (531) being arranged at intervals along the length direction of the fine-tuning plate (51), and the permanent magnet (521) being located between the first electromagnet (522) and the second electromagnet (531).

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