Microwave switch driving device and high-power microwave switch

Abstract

The utility model relates to the technical field of microwave switches, and discloses a microwave switch driving device and a high-power microwave switch, the driving device comprises a first mounting plate, a second mounting plate, a third mounting plate and a fourth mounting plate which are sequentially arranged from bottom to top, and lower electromagnetic driving assemblies are mounted on the first mounting plate and the second mounting plate; electromagnetic driving assemblies are mounted on the third mounting plate and the fourth mounting plate; the movable iron core of the upper electromagnetic driving assembly pushes the movable iron core of the lower electromagnetic driving assembly to move downwards in the process of moving downwards; when the microwave switch channel is controlled, the driving device drives the movable iron core in the lower electromagnetic driving assembly to move downwards through the downward movement of the movable iron core of the upper electromagnetic driving assembly, so that compared with the existing driving device, the movement distance of the movable iron core is shortened, the electromagnetic force required by the movement of the movable iron core during starting can be reduced, and the reliability of the microwave switch channel is improved. Therefore, the starting current of the coil can be reduced, and the power consumption of the microwave switch adopting the driving device can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of microwave switch technology, specifically to a microwave switch driving device and a high-power microwave switch. Background Technology

[0002] During the channel switching process of a microwave switch, an electromagnetic coil assembly, i.e., a driving device, is used to move the radio frequency reed up and down, thereby achieving channel shutdown control of the microwave switch. Existing electromagnetic coil assemblies include a yoke, a coil wound around the yoke, an iron core located on the yoke, and a guide rod located at the lower end of the iron core.

[0003] During the actual operation of the electromagnetic coil assembly, when the coil is energized, the iron core will move downward, thereby driving the guide rod to move downward, which in turn causes the radio frequency spring to move downward, ultimately turning on the microwave switch channel.

[0004] The existing single-winding electromagnetic coil assembly for high-power microwave switches has the following problems in practical use:

[0005] First, to avoid the "breakdown" phenomenon when the microwave switch transmits high-power signals, the travel distance of the RF spring needs to be increased. Therefore, the electromagnetic moving iron core that drives the RF spring to move up and down needs to have a larger travel range. In other words, when the microwave switch is in the off state, the magnetic gap between the moving iron core and the stationary iron core is larger. With a certain opening force, more power is required to drive the electromagnetic coil, resulting in high power consumption and high heat generation.

[0006] Secondly, during the switching process, the magnetic gap between the moving iron core and the stationary iron core decreases rapidly, while the driving power remains unchanged. This results in a significant increase in the force, which can damage the switch's push rod and contacts, severely affecting the service life of the microwave switch. Utility Model Content

[0007] In view of the shortcomings of the prior art, the present invention provides a microwave switch driving device and a high-power microwave switch. The technical problem to be solved is that the iron core in the existing microwave switch driving device moves a long distance, requiring a large current to be applied to turn on the microwave switch channel, resulting in high power consumption.

[0008] To solve the above technical problems, in the first aspect, this utility model provides the following technical solution: a microwave switch driving device, comprising a first mounting plate, a second mounting plate, a third mounting plate and a fourth mounting plate arranged sequentially from bottom to top;

[0009] At least one lower electromagnetic drive assembly is mounted on the first mounting plate and the second mounting plate.

[0010] The third and fourth mounting plates are equipped with upper electromagnetic drive components corresponding to each lower electromagnetic drive component.

[0011] The moving iron core of the upper electromagnetic drive assembly and the moving iron core of the lower electromagnetic drive assembly are arranged vertically in correspondence. During the downward movement of the moving iron core of the upper electromagnetic drive assembly, the moving iron core of the lower electromagnetic drive assembly is pushed downward.

[0012] In one embodiment of the first aspect, the top surface of the first mounting plate is provided with the same number of first lower fixing slots as the lower electromagnetic drive assembly, and the bottom surface of the second mounting plate is provided with a first upper fixing slot corresponding to each first lower fixing slot. One first lower fixing slot and the corresponding first upper fixing slot are used to install one lower electromagnetic drive assembly.

[0013] The top surface of the third mounting plate is provided with the same number of second lower fixing slots as the upper electromagnetic drive assembly, and the bottom surface of the fourth mounting plate is provided with second upper fixing slots corresponding to each second lower fixing slot. One second lower fixing slot and the corresponding second upper fixing slot are used to install one upper electromagnetic drive assembly.

[0014] In one embodiment of the first aspect, the lower electromagnetic drive assembly and the upper electromagnetic drive assembly respectively include a yoke, a coil, a moving iron core, and a guide rod. The yoke is installed in corresponding lower and upper fixed slots. The coil is wound on the yoke. The yoke has a guide hole inside. The moving iron core is located in the guide hole, and the top of the moving iron core is T-shaped. The width of the horizontal portion of the top of the moving iron core is greater than the width of the guide hole. The bottom of the moving iron core is connected to the guide rod.

[0015] In one embodiment of the first aspect, the bottom of the moving iron core is conical.

[0016] In one embodiment of the first aspect, the first mounting plate and the second mounting plate, the second mounting plate and the third mounting plate, and the third mounting plate and the fourth mounting plate are respectively connected by support rods.

[0017] In one embodiment of the first aspect, two lower electromagnetic drive assemblies are mounted on the first and second mounting plates; and two upper electromagnetic drive assemblies are mounted on the third and fourth mounting plates.

[0018] Secondly, this utility model provides a high-power microwave switch, including the aforementioned microwave switch driving device, and also includes a base. The base contains a microwave cavity, and the bottom of the base has connectors at both ends and the middle of the microwave cavity. The three connectors divide the microwave cavity into two microwave switch channels. Each microwave switch channel contains an RF spring, and each RF spring is connected to a push rod passing through the top surface of the base. The two push rods are respectively connected to the guide rods of two lower electromagnetic drive components.

[0019] In one embodiment of the second aspect, the coils on both the lower electromagnetic drive assembly and the upper electromagnetic drive assembly are single-winding coils, and a spring is also fitted on the push rod, the spring being located between the top of the push rod and the base.

[0020] In one embodiment of the second aspect, the bottom surface of the push rod has an upward-facing mounting hole, and a push rod cap is installed in the mounting hole. The push rod cap passes through the radio frequency spring and fixes the radio frequency spring to the push rod.

[0021] In one embodiment of the second aspect, the mounting hole includes a first cavity, a second cavity, and a third cavity from bottom to top, wherein the first cavity and the third cavity have the same width and are greater than the width of the second cavity, and the portion of the push rod cap located in the mounting hole matches the mounting hole.

[0022] The beneficial effects of this invention compared with the prior art are as follows: When controlling the microwave switch channel, the driving device of this invention sets up an upper electromagnetic drive component and a lower electromagnetic drive component that are arranged vertically. The moving iron core of the upper electromagnetic drive component moves downward, which drives the moving iron core in the lower electromagnetic drive component to move downward. Compared with the existing driving device, the movement distance of the moving iron core is shortened. This reduces the electromagnetic force required for the movement of the moving iron core during startup, thereby reducing the starting current of the coil and thus reducing the power consumption of the microwave switch using the driving device of this invention. Attached Figure Description

[0023] Figure 1 This is an internal cross-sectional view of the drive device in Embodiment 1;

[0024] Figure 2 This is a schematic diagram of the high-power microwave switch in Example 2;

[0025] Figure 3 This is an internal cross-sectional view of the high-power microwave switch in Embodiment 2;

[0026] Figure 4 This is a schematic diagram of the push rod in Example 2;

[0027] Figure 5 This is a schematic diagram of the push rod, radio frequency spring, and push rod cap in the embodiment. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of a microwave switch driving device and a high-power microwave switch disclosed in this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustrative purposes only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of protection of this utility model.

[0029] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or features, these components or features should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one feature from another. Furthermore, the terms used in this document may, as appropriate, include any combination of one or more related items listed.

[0030] Example 1

[0031] This embodiment discloses a microwave switch driving device including a first mounting plate 1, a second mounting plate 2, a third mounting plate 3, a fourth mounting plate 4, a lower electromagnetic driving assembly 5, and an upper electromagnetic driving assembly 6.

[0032] The structure of the driving device in this embodiment will be described in detail below:

[0033] like Figure 1 As shown, the first mounting plate 1, the second mounting plate 2, the third mounting plate 3 and the fourth mounting plate 4 are arranged sequentially from bottom to top;

[0034] During actual installation, the first mounting plate 1 and the second mounting plate 2, the second mounting plate 2 and the third mounting plate 3, and the third mounting plate 3 and the fourth mounting plate 4 are respectively connected by support rods 11.

[0035] For example, from Figure 2 It can be seen that there are 6 support rods 11 between the first mounting plate 1 and the second mounting plate 2, 6 support rods 11 between the second mounting plate 2 and the third mounting plate 3, and 6 support rods between the third mounting plate 3 and the fourth mounting plate 4.

[0036] In addition, in this embodiment, at least one lower electromagnetic drive assembly 5 is installed on the first mounting plate 1 and the second mounting plate 2;

[0037] The third mounting plate 3 and the fourth mounting plate 4 are equipped with an upper electromagnetic drive assembly 6 corresponding to each lower electromagnetic drive assembly 5.

[0038] The moving iron core of the upper electromagnetic drive assembly 6 is arranged vertically and vertically corresponding to the moving iron core of the lower electromagnetic drive assembly 5. As the moving iron core of the upper electromagnetic drive assembly 6 moves downward, it pushes the moving iron core of the lower electromagnetic drive assembly 5 to move downward.

[0039] When controlling the microwave switch channel, the driving device of this invention sets up an upper electromagnetic drive component 6 and a lower electromagnetic drive component 5, which are arranged vertically. The moving iron core of the upper electromagnetic drive component 6 moves downward, driving the moving iron core in the lower electromagnetic drive component 5 to move downward. Compared with existing driving devices, the movement distance of the moving iron core is shortened. This reduces the electromagnetic force required for the moving iron core to move during startup, thereby reducing the starting current of the coil and ultimately reducing the power consumption of the microwave switch using the driving device of this invention.

[0040] In this embodiment, the lower electromagnetic drive component 5 is fixed in the following way:

[0041] The top surface of the first mounting plate 1 is provided with the same number of first lower fixing slots as the lower electromagnetic drive assembly 5. The bottom surface of the second mounting plate 2 is provided with first upper fixing slots corresponding to each first lower fixing slot. One first lower fixing slot and the corresponding first upper fixing slot are used to install one lower electromagnetic drive assembly 5. That is, the upper and lower ends of one lower electromagnetic drive assembly 5 are respectively locked in one first upper fixing slot and one first lower fixing slot.

[0042] It should be noted that although the first upper fixing slot and the first lower fixing slot are not labeled in the attached drawings, their positions can be determined from the position of the lower electromagnetic drive component 5.

[0043] In this embodiment, the upper electromagnetic drive component 6 is fixed in the following way:

[0044] The top surface of the third mounting plate 3 is provided with the same number of second lower fixing slots as the upper electromagnetic drive assembly 6, and the bottom surface of the fourth mounting plate 4 is provided with second upper fixing slots corresponding to each second lower fixing slot. One second lower fixing slot and the corresponding second upper fixing slot are used to install one upper electromagnetic drive assembly 6, that is, the upper and lower ends of one upper electromagnetic drive assembly 6 are respectively locked in one second upper fixing slot and one second lower fixing slot.

[0045] It should be noted that although the second upper fixing slot and the second lower fixing slot are not labeled in the attached drawings, their positions can be determined from the position of the upper electromagnetic drive component 6.

[0046] The structures of the lower electromagnetic drive assembly 5 and the upper electromagnetic drive assembly 6 in this embodiment will be described in detail below:

[0047] The lower electromagnetic drive assembly 5 and the upper electromagnetic drive assembly 6 respectively include a yoke 7, a coil 9, a moving iron core 8, and a guide rod 10. The yoke 7 is installed in the corresponding lower and upper fixed slots. The coil 9 is wound on the yoke 7. The yoke 7 has a guide hole inside. The moving iron core 8 is located in the guide hole, and the top of the moving iron core 8 is T-shaped. The width of the horizontal part of the top of the moving iron core 8 is greater than the width of the guide hole. The bottom of the moving iron core 8 is connected to the guide rod 10.

[0048] More specifically, the top of the moving iron core 8 consists of a first cylinder and a second cylinder arranged in concentric circles from bottom to top. The diameter of the second cylinder is larger than the diameter of the first cylinder, and the first cylinder is located in the guide hole.

[0049] In one embodiment, the length of the yoke 7 of the lower electromagnetic drive assembly 5 and the length of the yoke 7 of the upper electromagnetic drive assembly 6 can be the same. In another embodiment, the length of the yoke 7 of the lower electromagnetic drive assembly 5 and the length of the yoke 7 of the upper electromagnetic drive assembly 6 can be different; specifically, the length of the yoke 7 of the lower electromagnetic drive assembly 5 can be greater than the length of the yoke 7 of the upper electromagnetic drive assembly 6, or the length of the yoke 7 of the lower electromagnetic drive assembly 5 can be less than the length of the yoke 7 of the upper electromagnetic drive assembly 6.

[0050] In addition, in this embodiment, in order to facilitate the starting of the moving iron core 8 and reduce the starting current, the bottom of the moving iron core 8 is tapered.

[0051] In addition, in this embodiment, two lower electromagnetic drive assemblies 5 are installed on the first mounting plate 1 and the second mounting plate 2; and two upper electromagnetic drive assemblies 6 are installed on the third mounting plate 3 and the fourth mounting plate 4.

[0052] Example 2

[0053] like Figure 2 and 3 As shown, this embodiment provides a high-power microwave switch, including a microwave switch driving device as described in Embodiment 1, wherein the microwave switch driving device is provided with two lower electromagnetic driving components 5;

[0054] It also includes a base 12, which contains a microwave cavity 13. Connectors 14 are provided at both ends and the middle of the microwave cavity 13 at the bottom of the base 12. The three connectors 14 divide the microwave cavity 13 into two microwave switching channels. Each microwave switching channel contains an RF spring 15. Each RF spring 15 is connected to a push rod 16 that passes through the top surface of the base 1. The two push rods 16 are respectively connected to the guide rods 10 of the two lower electromagnetic drive components 5.

[0055] In actual use, when the guide rod 10 of the current electromagnetic drive assembly 5 drives the push rod 16 to move downward, the corresponding radio frequency spring 15 turns on the microwave switch channel below it.

[0056] Specifically, in this embodiment, the coils 9 on both the lower electromagnetic drive assembly 5 and the upper electromagnetic drive assembly 5 are single-winding coils, and a spring 17 is also sleeved on the push rod 16, with the spring 17 located between the top of the push rod 16 and the base.

[0057] In practical use, by setting spring 17, after the power supply to the coil 9 of the upper electromagnetic drive assembly 5 is removed, the spring force of spring 17 can move the radio frequency spring 15 upward, thereby realizing the self-turn-off of the microwave switching channel.

[0058] Specifically, in this embodiment, the bottom surface of the push rod 15 is provided with an installation hole, and a push rod cap 18 is installed in the installation hole. The push rod cap 18 passes through the radio frequency spring and fixes the radio frequency spring 15 to the push rod 16.

[0059] Other examples Figure 4 and 5 As shown, the mounting hole 16 includes a first cavity 160, a second cavity 161, and a third cavity 162 from bottom to top. The widths of the first cavity 160 and the third cavity 162 are the same and greater than the width of the second cavity 161. The portion of the push rod cap 18 located in the mounting hole matches the mounting hole. That is, the portion of the push rod cap 18 located in the second cavity 161 and the third cavity 162 has a barbed structure. This design facilitates installation. During installation, the worker only needs to insert the push rod cap 18 into the mounting hole 16.

[0060] Based on the above description and inspired by this utility model, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A microwave switch driving device, characterized in that, It includes a first mounting plate (1), a second mounting plate (2), a third mounting plate (3), and a fourth mounting plate (4) arranged sequentially from bottom to top; At least one lower electromagnetic drive assembly (5) is mounted on the first mounting plate (1) and the second mounting plate (2); The third mounting plate (3) and the fourth mounting plate (4) are equipped with upper electromagnetic drive components (6) corresponding to each lower electromagnetic drive component (5); The moving iron core of the upper electromagnetic drive assembly (6) and the moving iron core of the lower electromagnetic drive assembly (5) are arranged vertically in correspondence. During the downward movement of the moving iron core of the upper electromagnetic drive assembly (6), the moving iron core of the lower electromagnetic drive assembly (5) is pushed downward.

2. The microwave switch driving device according to claim 1, characterized in that, The top surface of the first mounting plate (1) is provided with the same number of first lower fixing slots as the lower electromagnetic drive assembly (5), and the bottom surface of the second mounting plate (2) is provided with first upper fixing slots corresponding to each first lower fixing slot. One first lower fixing slot and the corresponding first upper fixing slot are used to install one lower electromagnetic drive assembly (5). The top surface of the third mounting plate (3) is provided with the same number of second lower fixing slots as the upper electromagnetic drive assembly, and the bottom surface of the fourth mounting plate (4) is provided with a second upper fixing slot corresponding to each second lower fixing slot. One second lower fixing slot and the corresponding second upper fixing slot are used to install one upper electromagnetic drive assembly (6).

3. The microwave switch driving device according to claim 2, characterized in that, The lower electromagnetic drive assembly (5) and the upper electromagnetic drive assembly (6) respectively include a yoke (7), a coil (9), a moving iron core (8) and a guide rod (10). The yoke (7) is installed in the corresponding lower and upper fixed slots. The coil (9) is wound on the yoke (7). The yoke (7) has a guide hole inside. The moving iron core (8) is located in the guide hole, and the top of the moving iron core (8) is T-shaped. The width of the horizontal part of the top of the moving iron core (8) is greater than the width of the guide hole. The bottom of the moving iron core (8) is connected to the guide rod (10).

4. The microwave switch driving device according to claim 3, characterized in that, The bottom of the moving iron core (8) is conical.

5. A microwave switch driving device according to claim 1, characterized in that, The first mounting plate (1) and the second mounting plate (2), the second mounting plate (2) and the third mounting plate (3), and the third mounting plate (3) and the fourth mounting plate (4) are respectively connected by support rods (11).

6. A microwave switch driving device according to any one of claims 2-5, characterized in that, Two lower electromagnetic drive assemblies (5) are installed on the first mounting plate (1) and the second mounting plate (2); two upper electromagnetic drive assemblies (6) are installed on the third mounting plate (3) and the fourth mounting plate (4).

7. A high-power microwave switch, characterized in that, The microwave switch driving device according to claim 6 further includes a base (12), a microwave cavity (13) is provided inside the base (12), and connectors (14) are respectively provided at both ends and the middle of the microwave cavity (13) at the bottom of the base (12). The three connectors (14) divide the microwave cavity (13) into two microwave switch channels. Each microwave switch channel is provided with an RF spring (15). Each RF spring (15) is connected to a push rod (16) passing through the top surface of the base (12). The two push rods (16) are respectively connected to the guide rods (10) of the two lower electromagnetic drive components (5).

8. A high-power microwave switch according to claim 7, characterized in that, The coils (9) on the lower electromagnetic drive assembly (5) and the upper electromagnetic drive assembly (6) are both single-winding coils. A spring (17) is also fitted on the push rod (16), and the spring (17) is located between the top of the push rod (16) and the base (12).

9. A high-power microwave switch according to claim 8, characterized in that, The bottom surface of the push rod (16) has an upward-facing mounting hole, in which a push rod cap (18) is installed. The push rod cap (18) passes through the radio frequency spring (15) and fixes the radio frequency spring (15) onto the push rod (16).

10. A high-power microwave switch according to claim 9, characterized in that, The mounting hole includes a first cavity (160), a second cavity (161), and a third cavity (162) from bottom to top. The first cavity (160) and the third cavity (162) have the same width and are greater than the width of the second cavity (161). The portion of the push rod cap (18) located in the mounting hole matches the mounting hole.

Images