Electromagnetic drive device and self-resetting microwave switch

Abstract

The present invention relates to the technical field of microwave switches, and discloses an electromagnetic drive device and a self-resetting microwave switch. The electromagnetic drive device comprises a coil frame, a coil, a spring, an upper static iron core, a lower moving iron core, a sliding rod and a bracket. The self-resetting microwave switch comprises an electromagnetic drive device and a second drive device. In actual use, when the electromagnetic drive device and the second drive device are connected to excitation or not connected to excitation, one microwave switch channel is turned on and the other is turned off, so that the self-resetting microwave switch of the present invention can be applied to more scenarios; in addition, the elastic force of the spring makes the corresponding microwave switch channel remain in a conducting state when the electromagnetic drive device is not connected to excitation, thereby reducing energy consumption.

Description

Technical Field

[0001] This invention relates to the field of microwave switch technology, specifically to an electromagnetic drive device and a self-resetting microwave switch. Background Technology

[0002] Currently, microwave switches are used in the radio frequency field to switch radio frequency signal channels. Microwave switches can be divided into electromechanical relay microwave switches and solid-state microwave switches according to their working principles. In existing electromechanical solenoid relay microwave switches, the microwave switch channels are all disconnected when not powered on, and it is not possible to turn on one microwave switch channel and turn off the other microwave switch channels when the power is off. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the present invention provides an electromagnetic drive device and a self-resetting microwave switch, wherein the self-resetting microwave switch has a microwave switch channel in a conducting state and a microwave switch channel in a disconnected state in a power-off state.

[0004] To solve the above technical problems, in a first aspect, the present invention provides an electromagnetic drive device, including a coil frame, a coil, a spring, an upper stationary iron core, a lower moving iron core, a slide rod, and a bracket. The coil is sleeved on the coil frame, and a channel is provided inside the coil frame. The upper stationary iron core is installed at the upper part of the channel, and the bracket is installed at the lower end of the channel. The lower moving iron core is installed inside the channel and is located between the bracket and the upper stationary iron core. The lower moving iron core is connected to the slide rod, which passes through the bracket. The upper stationary iron core and the lower moving iron core are respectively provided with blocking parts. The spring is sleeved on the upper stationary iron core and the lower moving iron core, and the two ends of the spring abut against the blocking parts of the upper stationary iron core and the lower moving iron core, respectively.

[0005] In one embodiment of the first aspect, the opposing ends of the upper stationary iron core and the lower moving iron core are stepped, and the two ends of the spring respectively abut against the stepped surface of the upper stationary iron core and the stepped surface of the lower moving iron core.

[0006] In one embodiment of the first aspect, the invention further includes a lower yoke and an upper yoke, the lower yoke and the upper yoke being connected by a magnetically conductive support rod, the bracket being mounted on the lower yoke, and the coil being located between the upper yoke and the lower yoke.

[0007] The working principle of the electromagnetic drive device of the present invention is as follows: When the coil is not connected to the excitation, the lower moving iron core moves downward under the force of the spring. When the slide rod is connected to the connecting piece that drives the microwave switch channel to be turned on or off, the downward movement of the slide rod will drive the corresponding microwave switch channel to be turned on. When the coil is connected to the excitation and generates a magnetic field, an attraction will be generated between the upper stationary iron core and the lower moving iron core. The attraction overcomes the elastic force of the spring and drives the lower moving iron core to move upward, which in turn drives the connecting piece connected to the slide rod to move upward, causing the corresponding microwave switch channel to be turned off.

[0008] Secondly, the present invention also provides a self-resetting microwave switch using the aforementioned electromagnetic drive device, comprising a base, the base having two microwave switch channels, a first connector and a second connector within the base, the first connector being connected to a first push rod, the second connector being connected to a second push rod, the electromagnetic drive device being mounted on the top of the base, the top of the base having a first mounting hole in the area of ​​the first connector and a second mounting hole in the area of ​​the second connector; the upper end of the first push rod being located within the first mounting hole, the slide rod of the electromagnetic drive device being connected to the first push rod, and the upper end of the second push rod being located within the second mounting hole; a first spring being sleeved on the first push rod, the two ends of the first spring respectively abutting against the upper end of the first push rod and the bottom surface of the first mounting hole; a second spring being sleeved on the second push rod, the two ends of the second spring respectively abutting against the upper end of the second push rod and the bottom surface of the second mounting hole;

[0009] The top of the base is provided with a second driving device at the second mounting hole; the second driving device includes a second slide rod, a coil assembly and an upper moving iron core and a lower stationary iron core located in the coil assembly, the upper moving iron core is connected to the second slide rod, and the second slide rod passes through the lower stationary iron core and is connected to the second push rod.

[0010] The working principle of the self-resetting microwave switch of the present invention is as follows: When neither the electromagnetic drive device nor the second drive device is energized, the electromagnetic drive device drives the first connector to turn on the corresponding microwave switch channel. Due to the elastic force of the second spring, the second drive device lifts the second connector, thereby turning off the corresponding microwave switch channel. When both the electromagnetic drive device and the second drive device are energized, the electromagnetic drive device drives the first connector to move upward, turning off the corresponding microwave switch channel. The lower stationary iron core of the second drive device attracts the upper moving iron core to move downward, thereby driving the second connector to move downward, turning on the corresponding microwave switch channel.

[0011] The beneficial effects of this invention compared with the prior art are as follows: In actual use, the electromagnetic drive device and the second drive device of the self-resetting microwave switch of this invention will drive one microwave switch channel to conduct and drive one microwave switch channel to disconnect when energized and when not energized, so that the self-resetting microwave switch of this invention can be applied in more scenarios; in addition, the spring force keeps the corresponding microwave switch channel in the conducting state when the electromagnetic drive device is not energized, reducing energy consumption; finally, the electromagnetic drive device adopts a solenoid structure, and a well-sealed magnetic circuit is formed between the upper chuck, the moving iron core, the stationary iron core and the lower chuck, resulting in high magnetic energy utilization and less magnetic leakage. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the second drive device of the electromagnetic drive device in the embodiment;

[0013] Figure 2 This is a schematic diagram of the self-resetting microwave switch in the embodiment.

[0014] In the diagram: 1. Coil frame, 2. Coil, 3. Upper stationary iron core, 4. Lower moving iron core, 5. Slide rod, 6. Spring, 7. Bracket, 8. Lower chuck, 9. Upper chuck, 10. Magnetic support rod, 11. Coil assembly, 12. Upper moving iron core, 13. Second slide rod, 14. Lower stationary iron core, 15. First mounting hole, 16. Second mounting hole, 17. First connector, 18. First push rod, 19. Second connector, 20. Second push rod, 21. Base. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0016] like Figure 1 As shown, an electromagnetic drive device includes a coil frame 1, a coil 2, a spring 6, an upper stationary iron core 3, a lower moving iron core 4, a slide rod 5, and a bracket 7. The coil 2 is sleeved on the coil frame 1, and the coil frame 1 has a channel. The upper stationary iron core 3 is installed at the upper part of the channel, and the bracket 7 is installed at the lower end of the channel. The lower moving iron core 4 is installed in the channel and is located between the bracket 7 and the upper stationary iron core 3. The lower moving iron core 4 is connected to the slide rod 5, which passes through the bracket 7. The upper stationary iron core 3 and the lower moving iron core 4 are respectively provided with blocking parts. The spring 6 is sleeved on the upper stationary iron core 3 and the lower moving iron core 4, and the two ends of the spring 6 are respectively the blocking parts of the upper stationary iron core 3 and the lower moving iron core.

[0017] Specifically, in this embodiment, the opposing ends of the upper stationary iron core 3 and the lower moving iron core 4 are stepped, and the two ends of the spring 6 abut against the stepped surfaces of the upper stationary iron core 3 and the lower moving iron core 4, respectively. In actual use, since the upper stationary iron core 3 is stationary, the spring 6 will push the lower moving iron core 4 downward without external force. In a certain embodiment, protrusions can be provided on the outer walls of the upper stationary iron core 3 and the lower moving iron core 4 as blocking parts. The protrusions can be arranged around the upper stationary iron core 3 and the lower moving iron core 4 in a ring shape.

[0018] Specifically, in this embodiment, the present invention further includes a lower spool 8 and an upper spool 9, which are connected by a magnetically conductive support rod 10. A bracket 7 is mounted on the lower spool 8, and a coil 2 is located between the upper spool 9 and the lower spool 8. The coil frame 1 and the coil 2 are solenoid structures, forming a well-sealed magnetic circuit between the upper spool 9, the lower moving iron core 4, the upper stationary iron core 3, and the lower spool 8, resulting in high magnetic energy utilization and less magnetic leakage.

[0019] The working principle of the electromagnetic drive device of the present invention is as follows: When the coil 2 is not connected to the excitation, the lower moving iron core 4 moves downward under the force of the spring 6. When the slide rod 5 is connected to the connecting piece that drives the microwave switch channel to be turned on or off, the downward movement of the slide rod 5 will drive the corresponding microwave switch channel to be turned on. When the coil 2 is connected to the excitation and generates a magnetic field, an attraction will be generated between the upper stationary iron core 3 and the lower moving iron core 4. The attraction overcomes the elastic force of the spring 6 and drives the lower moving iron core 4 to move upward, which in turn drives the connecting piece connected to the slide rod 5 to move upward, causing the corresponding microwave switch channel to be turned off.

[0020] In addition, in actual use, it can be done according to Figure 1 The electromagnetic drive device is installed on the lower yoke 8 and the upper yoke 9 in such a way that multiple electromagnetic drive devices are installed on the lower yoke 8 and the upper yoke 9, thereby enabling multiple connecting parts to move downward or upward simultaneously.

[0021] like Figure 2As shown, a self-resetting microwave switch, using the aforementioned electromagnetic drive device, includes a base 21. The base 21 has two microwave switch channels. A first connector 17 and a second connector 19 are located within the base 21. The first connector 17 is connected to a first push rod 18, and the second connector 19 is connected to a second push rod 20. The electromagnetic drive device is mounted on the top of the base 21. A first mounting hole 15 is formed in the area of ​​the first connector, and a second mounting hole 16 is formed in the area of ​​the second connector 19. The upper end of the first push rod 18 is located within the first mounting hole 15. A slide rod 5 of the electromagnetic drive device is connected to the first push rod 18, and the upper end of the second push rod 20 is located within the second mounting hole 16. A first spring is fitted onto the first push rod 18, with its two ends abutting against the upper end of the first push rod 18 and the bottom surface of the first mounting hole 15, respectively. A second spring is fitted onto the second push rod 20, with its two ends abutting against the upper end of the second push rod 20 and the bottom surface of the second mounting hole 16, respectively. It should be noted that although... Figure 2 The first and second springs are not shown in the drawing, but those skilled in the art can deduce from the above that the first spring applies an upward thrust to the first push rod 18 and the second spring applies an upward thrust to the second push rod 20.

[0022] A second drive unit is provided at the top of the base 21 at the second mounting hole 16; see reference. Figure 1 The second drive device includes a second slide rod 13, a coil assembly 11, and an upper moving iron core 12 and a lower stationary iron core 14 located within the coil assembly 11. The coil assembly 11 is also a solenoid structure. The upper moving iron core 12 is connected to the second slide rod 13, and the second slide rod 13 passes through the lower stationary iron core 14 and is connected to the second push rod 20.

[0023] exist Figure 2 In the middle, the second drive device is also fixed on the upper spool 9 and the lower spool 8. The upper spool 9, the upper moving iron core 12, the lower stationary iron core 14 and the lower spool 8 form a well-sealed magnetic circuit, which has high magnetic energy utilization and less magnetic leakage.

[0024] The working principle of the self-resetting microwave switch of the present invention is as follows: When neither the electromagnetic drive device nor the second drive device is energized, the electromagnetic drive device drives the first connector 17 to turn on the corresponding microwave switch channel. Due to the elastic force of the second spring, the second drive device lifts the second connector 19, thereby turning off the corresponding microwave switch channel. When both the electromagnetic drive device and the second drive device are energized, the electromagnetic drive device drives the first connector 17 to move upward, turning off the corresponding microwave switch channel. The lower stationary iron core 14 of the second drive device attracts the upper moving iron core 12 to move downward, thereby driving the second connector 19 to move downward, turning on the corresponding microwave switch channel.

[0025] In summary, in practical use, the electromagnetic drive device and the second drive device of the self-resetting microwave switch of the present invention will have one microwave switch channel turned on and one microwave switch channel turned off when energized and when not energized, enabling the self-resetting microwave switch of the present invention to be applied in more scenarios; in addition, the elastic force of the spring 6 keeps the corresponding microwave switch channel in the conducting state when the electromagnetic drive device is not energized, reducing energy consumption; finally, the electromagnetic drive device adopts a solenoid structure, and a well-sealed magnetic circuit is formed between the upper chuck 9, the moving iron core, the stationary iron core and the lower chuck 8, resulting in high magnetic energy utilization and less magnetic leakage.

[0026] Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this invention. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A self-resetting microwave switch, comprising a base and an electromagnetic drive device, wherein the base is provided with two microwave switch channels, a first connecting member and a second connecting member are provided in the base, the first connecting member is connected to a first push rod, the second connecting member is connected to a second push rod, the electromagnetic drive device is mounted on the top of the base, a first mounting hole is provided in the region of the first connecting member, and a second mounting hole is provided in the region of the second connecting member on the top of the base; the upper end of the first push rod is located in the first mounting hole, the sliding rod of the electromagnetic drive device is connected to the first push rod, and the upper end of the second push rod is located in the second mounting hole; a first spring is sleeved on the first push rod, and two ends of the first spring respectively abut against the upper end of the first push rod and the bottom surface of the first mounting hole; a second spring is sleeved on the second push rod, and two ends of the second spring respectively abut against the upper end of the second push rod and the bottom surface of the second mounting hole; A second driving device is provided at the second mounting hole on the top of the base; the second driving device comprises a second sliding rod, a coil assembly, and an upper moving iron core and a lower static iron core located in the coil assembly, the upper moving iron core is connected to the second sliding rod, and the second sliding rod passes through the lower static iron core and is connected to the second push rod; The electromagnetic drive device comprises a coil frame, a coil, a spring, an upper static iron core, a lower moving iron core, a sliding rod and a bracket, the coil is sleeved on the coil frame, a channel is provided in the coil frame, the upper static iron core is installed at the upper part of the channel, the bracket is installed at the lower port of the channel, the lower moving iron core is installed in the channel, the lower moving iron core is located between the bracket and the upper static iron core, the lower moving iron core is connected to the sliding rod, the sliding rod passes through the bracket, the upper static iron core and the lower moving iron core are respectively provided with blocking parts, the spring is sleeved on the upper static iron core and the lower moving iron core, and the two ends of the spring respectively resist the blocking parts of the upper static iron core and the lower moving iron core; The facing ends of the upper static iron core and the lower moving iron core are in a step shape, and the two ends of the spring respectively abut against the step surface of the upper static iron core and the step surface of the lower moving iron core; The electromagnetic drive device also includes a lower choke and an upper choke, wherein the lower choke is connected to the upper choke via a magnetic support rod, the bracket is mounted on the lower choke, and the coil is located between the upper choke and the lower choke.

Images