A microwave switch

Abstract

The invention relates to the technical field of microwave switches, and discloses a microwave switch, comprising a body, a microwave switch channel being arranged on the body, the microwave switch channel comprising two input connectors and a connector, the connector being connected to the lower end of a push rod, a magnetic steel being installed on the top of the push rod, a driving device being arranged on the top of the body, the driving device comprising a coil frame, a coil, a moving iron core, a static iron core and a slide bar, the coil being wound on the coil frame, the moving iron core and the static iron core being arranged in the channel of the coil frame from top to bottom, the lower end of the moving iron core being connected to the slide bar, the slide bar passing through the static iron core and being connected to the upper end of the push rod, when the coil is not connected to excitation, under the action of the gravitational force between the magnetic steel and the static iron core, the push rod drives the connector to move upward, so that the microwave switch channel is turned off, and the power consumption of the invention in the turned-off state is reduced, in addition, the coil being wound on the coil frame is a solenoid structure, and the moving iron core and the static iron core are both arranged in the coil frame, and the magnetic energy utilization rate thereof is higher than that of the existing method of driving the armature to rotate.

Description

Technical Field

[0001] The invention relates to the technical field of microwave switches, and in particular to a microwave switch. Background Art

[0002] At present, microwave switches are used in the RF field to switch the channels of RF signals. Microwave switches can be divided into electromechanical relay microwave switches and solid-state microwave switches according to their working principles. The existing electromechanical relay microwave switch mainly drives the armature to rotate by the coil to drive the connecting piece that controls the microwave switch channel in the microwave switch to move up and down. When the connecting piece moves down to the right position, the corresponding microwave switch is turned on. When the connecting piece moves up to the right position, the corresponding microwave switch channel is turned off. The defects of this method are that the magnetic energy utilization rate generated by the coil power-on and the leakage magnetic flux are serious. In addition, the existing microwave switch cannot realize that the two microwave switch microwave channels are in the off state at the same time. Summary of the invention

[0003] In view of the shortcomings of the background technology, the present invention provides a microwave switch, and the technical problem to be solved is that the existing microwave switch has low magnetic energy utilization, high energy consumption and cannot realize that two microwave switch channels are in the off state at the same time.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: a microwave switch, comprising a body, wherein at least one microwave switch channel is provided on the body, wherein the microwave switch channel comprises two input connectors and a connecting piece, wherein the two input connectors are located at the bottom of the body, wherein the connecting piece is located inside the body, wherein the connecting piece is connected to the lower end of a push rod, wherein a magnetic steel is installed on the top of the push rod, wherein a driving device is provided on the top of the body, wherein the driving device comprises a coil frame, a coil, a moving iron core, a stationary iron core and a sliding rod, wherein the coil is wound on the coil frame, wherein the moving iron core and the stationary iron core are both in the channel of the coil frame, wherein the moving iron core is above the stationary iron core, wherein the lower end of the moving iron core is connected to the sliding rod, wherein the sliding rod passes through the stationary iron core and is connected to the upper end of the push rod.

[0005] In actual use, when the coil is not connected to the excitation, i.e., the power supply, the push rod drives the connector to move upward under the attraction between the magnetic steel and the static iron core, and the microwave switch channel in the microwave switch is in the off state. When the coil is connected to the excitation, the static iron core and the moving iron core generate suction, and the moving iron core moves downward. The moving iron core drives the connector to move downward through the sliding rod and the push rod, so that the microwave switch channel is closed.

[0006] In some embodiments, the lower end of the push rod is connected to the center of the connecting member.

[0007] In a certain embodiment, a lower choke is provided on the top of the main body, the top of the lower choke is connected to an upper choke via a connecting rod, the coil frame is mounted on the lower choke, and the coil is located between the lower choke and the upper choke.

[0008] In a certain embodiment, the static iron core is embedded into the channel of the coil frame from the lower opening of the channel of the coil frame, a mounting hole is opened on the lower yoke at a position corresponding to the push rod, and the static iron core is installed at the upper opening of the mounting hole.

[0009] In a certain embodiment, two microwave switch channels are provided on the main body, and two driving devices are provided on the top of the main body.

[0010] Compared with the prior art, the present invention has the following beneficial effects: by arranging a moving iron core and a stationary iron core up and down in the channel of the coil frame, and connecting the moving iron core to the push rod through a sliding rod, when the coil is not connected to the excitation, under the action of the gravitational force between the magnetic steel and the stationary iron core, the push rod drives the connecting piece to move upward, and all channels of the microwave switch are in a closed state, so that the microwave switch has a higher isolation index; in addition, the coil is wound on the coil frame as a solenoid structure and the moving iron core and the stationary iron core are both arranged in the channel of the coil frame, so its magnetic energy utilization rate is higher than the existing method of driving the armature to rotate and has lower leakage magnetic flux, and the excitation power required when the switch state is switched is smaller, and the energy consumption is lower; the switch is reset by the gravitational force between the magnetic steel and the stationary iron core, and compared with the traditional solution of arranging a reset spring at the push rod and the mounting hole, the wear between the push rod and the spring and the spring fatigue problem are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the present invention in an embodiment.

[0012] In the figure: 1, body, 2, connector, 3, input connector, 4, push rod, 5, magnet, 6, coil frame, 7, coil, 8, moving iron core, 9, static iron core, 10, slide rod, 11, mounting hole, 12, lower choke, 13, connecting rod, 14, upper choke. DETAILED DESCRIPTION

[0013] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0014] like Figure 1 As shown, a microwave switch comprises a main body 1, on which at least two microwave switch channels are arranged, and the microwave switch channels comprise two input connectors 3 and a connector 2. Figure 1The two microwave switch channels in the apparatus have a common input connector. The microwave switch channel on the left is called the left microwave switch channel, and the microwave switch channel on the right is called the right microwave switch channel. The two input connectors 3 of a single microwave switch channel are located at the bottom of the body 1. The connecting member 2 is located inside the body 1. The connecting member 2 is connected to the lower end of the push rod 4. A magnetic steel 5 is installed on the top of the push rod 4. Two driving devices are provided on the top of the body 1. The driving devices include a coil frame 6, a coil 7, a moving iron core 8, a static iron core 9 and a slide rod 10. The coil 7 is wound on the coil frame 6. The moving iron core 8 and the static iron core 9 are both in the channel of the coil frame 6. The moving iron core 8 is above the static iron core 9. The lower end of the moving iron core 8 is connected to the slide rod 10. The slide rod 10 passes through the static iron core 9 and is connected to the upper end of the push rod 4.

[0015] In actual use, when Figure 1 When the coils 7 in the two driving devices are not excited, the push rod 4 drives the connecting piece 2 to move upward under the attraction between the magnetic steel 5 and the static iron core 9, and the two microwave switch channels in the microwave switch are in the off state.

[0016] When the coil 7 of the left driving device is energized, suction is generated between the moving iron core 8 and the stationary iron core 9 of the left driving device, and the moving iron core 8 of the left driving device moves downward, thereby driving the connecting piece 2 to move downward, so that the left microwave switch channel is closed. If the right driving device is not energized, the position of the connecting piece 2 remains unchanged, and the right microwave switch channel is in the off state.

[0017] When the coil 7 of the driving device on the right side is energized, suction is generated between the moving iron core 8 and the stationary iron core 9 of the driving device on the right side, and the moving iron core 8 of the driving device on the right side moves downward, thereby driving the connecting piece 2 to move downward, so that the right microwave switch channel is closed. Since the driving device on the left side is not energized, the position of the connecting piece 2 remains unchanged, and the left microwave switch channel is in the off state.

[0018] In actual use, when one microwave switch channel is provided on the main body, the present invention is a single-channel microwave switch, and when a plurality of K microwave switch channels are provided on the main body 1, the present invention is a K-channel microwave switch.

[0019] Specifically, in this embodiment, in each microwave switch channel, the center of the connecting member 2 is connected to the lower end of the push rod 4 .

[0020] In addition, in order to improve the utilization efficiency of magnetic energy, a lower choke 12 is provided on the top of the body 1, and the top of the lower choke 12 is connected to an upper choke 14 through a connecting rod 13. The coil frame 6 is installed on the lower choke 12, and the coil 7 is located between the lower choke 12 and the upper choke 14. When multiple driving devices are installed on the body 1, the coil of each driving device is located between the lower choke 12 and the upper choke 14.

[0021] Specifically, the static iron core 9 is embedded in the channel of the coil frame 6 from the lower opening of the channel of the coil frame 6 , a mounting hole 11 is opened on the lower yoke 12 at a position corresponding to the push rod 4 , and the static iron core 9 is installed at the upper opening of the mounting hole 11 .

[0022] In summary, the present invention arranges a static iron core 9 and a moving iron core 8 up and down in the channel of the coil frame 6, and connects the moving iron core 8 to the push rod 4 through the slide rod 10. When the coil 7 is not connected to the excitation, under the action of the gravitational force between the magnetic steel 5 and the static iron core 9, the push rod 4 drives the connecting piece 2 to move upward, and all channels of the microwave switch are in the off state, so that the microwave switch has a higher isolation index. In addition, the coil 7 is wound on the coil frame 6 as a solenoid structure, and the moving iron core 8 and the static iron core 9 are both arranged in the channel of the coil frame 6. Therefore, its magnetic energy utilization rate is higher than the existing method of driving the armature to rotate and has lower leakage magnetic flux. The excitation power required when the switch state is switched is smaller, and the energy consumption is lower. Finally, the microwave switch channel is reset by the gravitational force between the magnetic steel 5 and the static iron core 9. Compared with the traditional solution of arranging a reset spring at the push rod 4 and the mounting hole 11, the wear and spring fatigue problems between the push rod 4 and the spring are avoided.

[0023] The above is based on the present invention as an inspiration. Through the above description, relevant staff can make various changes and modifications without departing from the technical idea of ​​this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A microwave switch, comprising a body, wherein the body is provided with at least one microwave switch channel, wherein the microwave switch channel comprises two input connectors and a connecting piece, wherein the two input connectors are located at the bottom of the body, the connecting piece is located inside the body, and the connecting piece is connected to the lower end of a push rod, wherein: A magnetic steel is installed on the top of the push rod, and a driving device is provided on the top of the body, the driving device includes a coil frame, a coil, a moving iron core, a static iron core and a slide rod, the coil is wound on the coil frame, the moving iron core and the static iron core are both in the channel of the coil frame, the moving iron core is above the static iron core, the lower end of the moving iron core is connected to the slide rod, and the slide rod passes through the static iron core and is connected to the upper end of the push rod; The lower end of the push rod is connected to the center of the connecting member; A lower choke is arranged on the top of the body, and an upper choke is connected to the top of the lower choke via a connecting rod. The coil frame is installed on the lower choke, and the coil is located between the lower choke and the upper choke.

2. A microwave switch according to claim 1, characterized in that: The static iron core is embedded into the channel of the coil frame from the lower opening of the channel of the coil frame, a mounting hole is opened on the lower yoke at a position corresponding to the push rod, and the static iron core is mounted at the upper opening of the mounting hole.

3. A microwave switch according to any one of claims 1 to 2, characterized in that: The main body is provided with two microwave switch channels, and the top of the main body is provided with two driving devices.

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