A double-pole four-throw switch driving structure and driving method

Abstract

The present invention belongs to the field of radio frequency technology, and discloses a double-pole four-throw switch driving structure and driving method, including a radio frequency cavity, a driving component, a radio frequency cover plate and a transmission component, two groups of static contacts are arranged in the radio frequency cavity, each group of static contacts includes a first static contact and a second static contact, the first static contact is connected to a connector channel, and the second static contact is connected to a central inner conductor, two groups of moving contacts are arranged at the end of the transmission component, each group of moving contacts includes a first moving contact and a second moving contact, the radio frequency cover plate is arranged on the radio frequency cavity and seals the radio frequency cavity, the driving component is used to generate a lateral displacement output and drive the transmission component to generate a longitudinal displacement output, so as to realize the contact connection between the first moving contact of the corresponding group and the first static contact and the contact connection between the second moving contact and the second static contact. The present invention can greatly compress the overall size of the switch structure in the vertical direction, and greatly meet the use conditions of the switch in a short space.

Description

Technical Field

[0001] The present invention belongs to the field of radio frequency technology, and in particular relates to a double-pole four-throw switch driving structure and a driving method. Background Art

[0002] Microwave switches, also known as radio frequency switches, realize the function of controlling the conversion of microwave signal channels. Switches are defined according to the number of interfaces and are coded as #P#T, such as single-pole single-throw (SPST), single-pole double-throw (SPDT), double-pole four-throw (DPDT), single-pole six-throw (SP6T), etc.

[0003] The RF transmission channel switching of traditional microwave switches mostly adopts a unidirectional vertical layout. The switch connectors are all on the same side. The overall layout of the switch is combined from bottom to top, which is the cavity component, RF component, coil component, and drive component in sequence. Since the drive method adopts longitudinal electromagnetic drive, the overall height of the switch in the vertical direction is relatively high during structural design, which cannot meet the needs of use in small spaces. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a double-pole four-throw switch driving structure and a driving method to solve the problem that the driving of the existing radio frequency switch can often only be realized in a vertical layout, resulting in a relatively high overall height of the switch in the vertical direction, which cannot meet the needs of use in small spaces.

[0005] In order to achieve the invention objective of this application, the present invention provides the following technical solutions:

[0006] A double-pole four-throw switch drive structure includes a radio frequency cavity, a drive component, a radio frequency cover plate and a transmission component. Two groups of static contacts are arranged in the radio frequency cavity, each group of static contacts includes a first static contact and a second static contact, the first static contact is connected to a connector channel, and the second static contact is connected to a center inner conductor. Two groups of moving contacts are arranged at the end of the transmission component, each group of moving contacts includes a first moving contact and a second moving contact, the radio frequency cover plate is arranged on the radio frequency cavity and seals the radio frequency cavity, the drive component is arranged on the radio frequency cover plate, the drive component is used to generate a lateral displacement output and drive the transmission component to generate a longitudinal displacement output, so as to realize the contact connection between the first moving contact of the corresponding group and the first static contact and the contact connection between the second moving contact and the second static contact, thereby realizing the connection between the connector channel and the center inner conductor.

[0007] Furthermore, as a preferred technical solution, the driving assembly includes an outer conductor, a magnet, an inner conductor, two excitation coils, an iron core shaft and a driving shaft, the S pole and N pole of the magnet are respectively connected to the outer conductor and the inner conductor, the two excitation coils are arranged between the two S poles formed by the outer conductor, the iron core shaft is located in the two excitation coils, and the driving shaft is fixed on the iron core shaft.

[0008] Furthermore, as a preferred technical solution, the magnet is a permanent magnet.

[0009] Further, as a preferred technical solution, the transmission assembly includes a set of swing assemblies and two sets of pushing assemblies, the swing assembly includes a swing arm, an axis core and a swing arm reed, the swing arm is located above the RF cover plate, a U-shaped opening is provided on the top of the swing arm, the drive shaft is located in the U-shaped opening on the top of the swing arm, the middle part of the swing arm is fixedly connected to the swing arm reed to form a cross structure, the axis core is installed on the swing arm, and the cross structure formed by the swing arm and the swing arm reed can rotate in a vertical plane with the axis core as the rotation axis;

[0010] The two groups of pushing components are respectively located on both sides of the swing arm and directly below the swing arm reed. The pushing components include a push rod and a radio frequency reed. The top end of the push rod is located directly below the swing arm reed, and the lower end of the push rod is connected to the radio frequency reed. The two ends of the radio frequency reed are respectively a first moving contact and a second moving contact. The push rod is sleeved with an elastic element for resetting.

[0011] Furthermore, as a preferred technical solution, it also includes a plurality of guide rods, which are fixed under the RF cover plate, and the RF reed is provided with guide holes, and the guide rods pass through the guide holes on the RF reed accordingly, and the RF reed can move up and down along the guide rods.

[0012] Furthermore, as a preferred technical solution, the swing arm spring is made of elastic material.

[0013] A method for implementing switch driving using the above double-pole four-throw switch driving structure comprises the following steps:

[0014] Step 1: After the drive assembly is powered on, the excitation coil generates a magnetic field, which offsets the existing magnetic field, increases the magnetic field strength at the magnetic gap, and transmits the electromagnetic field to the iron core shaft, forming an electromagnetic field at both ends of the iron core shaft. According to the principle that like directions repel and opposite directions attract, under the action of the magnetic field force, the iron core shaft moves horizontally to the left or right along the center line of the excitation coil;

[0015] Step 2: The driving shaft follows the iron core shaft to make the same horizontal lateral movement, and the top of the swing arm deflects to the left or right under the driving action of the driving shaft, that is, the cross structure composed of the swing arm and the swing arm spring rotates in the vertical plane with the shaft core as the rotation axis;

[0016] Step 3: During the rotation of the cross structure formed by the swing arm and the swing arm spring, one end of the swing arm spring is pressed down and the other end is raised, and the downward-pressed swing arm spring pushes the push rod to move downward, and the RF spring corresponding to the lower end of the push rod moves downward accordingly, so that the two ends of the RF spring are respectively in contact with the corresponding first static contact and the second static contact, thereby realizing the connection between the corresponding connector channel and the center inner conductor;

[0017] Step 4: After switching the driving current, the driving shaft follows the core shaft to make a reverse horizontal lateral movement. At the same time, under the action of the elastic element, the end of the swing arm spring that was originally in a downward pressure state becomes an upward state, and the RF spring separates from the corresponding first static contact and second static contact, while the swing arm spring that was originally in an upward state becomes a downward pressure state, and pushes the push rod to move downward, so that the two ends of the RF spring corresponding to the lower end of the push rod are respectively in contact with the corresponding first static contact and second static contact, thereby realizing the connection between the corresponding connector channel and the center inner conductor, and realizing the switching of the RF channel.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention converts the horizontal displacement generated by the driving component into a displacement in the vertical direction by designing a driving component and a transmission component, and then realizes the switching of the radio frequency channel, thereby achieving a horizontal layout of the switch structure. Compared with the traditional vertical layout, the present invention greatly compresses the overall size of the switch structure in the vertical direction, which can greatly meet the use conditions of the switch in a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the longitudinal cross-section structure of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the driving assembly of the present invention;

[0023] Figure 4 It is a schematic diagram of the connection relationship between the driving assembly, the swing assembly and the pushing assembly of the present invention.

[0024] The names corresponding to the figure marks in the figure are: 1. RF cavity, 2. driving assembly, 3. RF cover, 21. outer conductor, 22. magnet, 23. inner conductor, 24. excitation coil, 25. iron core shaft, 26. shaft core, 27. swing arm reed, 28. driving shaft, 29. RF reed, 30. push rod, 31. swing arm, 32. guide rod, 33. elastic element. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example

[0029] like Figure 1-Figure 4 As shown, a double-pole four-throw switch driving structure shown in this embodiment includes a radio frequency cavity 1, a driving component 2, a radio frequency cover 3 and a transmission component. Two groups of static contacts are arranged in the radio frequency cavity, each group of static contacts includes a first static contact and a second static contact, the first static contact is connected to the connector channel, and the second static contact is connected to the center inner conductor. Two groups of moving contacts are arranged at the end of the transmission component, each group of moving contacts includes a first moving contact and a second moving contact, the radio frequency cover 3 is arranged on the radio frequency cavity 1 and seals the radio frequency cavity 1, and the driving component 2 is arranged on the radio frequency cover 3. The driving component 2 is used to generate a lateral displacement output and drive the transmission component to generate a longitudinal displacement output, so as to realize the contact connection between the first moving contact of the corresponding group and the first static contact and the contact connection between the second moving contact and the second static contact, thereby realizing the connection between the connector channel and the center inner conductor.

[0030] Specifically, the driving component of this embodiment includes an outer conductor 21, a magnet 22, an inner conductor 23, two excitation coils 24, an iron core shaft 25 and a driving shaft 28. The S pole and N pole of the magnet 22 are respectively connected to the outer conductor 21 and the inner conductor 23. The two excitation coils 24 are arranged between the two S poles formed by the outer conductor 21. The iron core shaft 25 is located in the two excitation coils 24, and the driving shaft 28 is fixed on the iron core shaft 25.

[0031] In this embodiment, the N-level of the magnet is toward the inner conductor, and the S-level is toward the outer conductor. The magnetic circuit is transmitted through the inner and outer conductors to form an N→S magnetic circuit at the end. When one of the excitation coils 24 is energized, a magnetic field is generated. The generated magnetic field offsets the existing attractive magnetic field, enhances the magnetic field strength at the magnetic gap, and the electromagnetic field is transmitted to the iron core shaft 25, forming an electromagnetic field at both ends of the iron core shaft 25. According to the principle of like directions repel each other and opposite directions attract each other, under the action of the magnetic field force, the iron core shaft 25 moves left or right along the center line of the excitation coil 24.

[0032] Specifically, the transmission assembly of this embodiment includes a group of swing assemblies and two groups of pushing assemblies. The swing assembly includes a swing arm 31, an axis core 26 and a swing arm reed 27. The swing arm 31 is located above the RF cover 3. A U-shaped opening is provided at the top of the swing arm. The drive shaft 28 is located in the U-shaped opening at the top of the swing arm 31. The middle part of the swing arm 31 is fixedly connected to the swing arm reed 27 to form a cross structure. The axis core 26 is installed on the swing arm 31, and the cross structure formed by the swing arm 31 and the swing arm reed 31 can rotate in a vertical plane with the axis core 26 as the rotation axis.

[0033] The two groups of pushing components in this embodiment are respectively located on both sides of the swing arm 31 and directly below the swing arm reed 27. The pushing components include a push rod 30 and a RF reed 29. The top of the push rod 30 is located directly below the swing arm reed 27. The lower end of the push rod 30 is connected to the RF reed 29. The two ends of the RF reed 29 are respectively a first moving contact and a second moving contact. The push rod 30 is provided with an elastic element 33 for resetting. The elastic element here can be a reset spring, and of course it can also be other elastic elements that can reset the push rod 30.

[0034] In this embodiment, taking the movement of the iron core shaft 25 to the right along the center line of the excitation coil 24 as an example, when the iron core shaft 25 moves to the right, the driving shaft 28 drives the top end of the swing arm 31 to move to the right, and the cross structure formed by the swing arm 31 and the swing arm spring 31 rotates clockwise in the vertical direction, and the swing arm spring 31 on the right side of the swing arm 31 is pressed down, while the swing arm spring 31 on the left side of the swing arm 31 is raised, and the swing arm spring 31 on the right side of the swing arm 31 is pressed down to contact the push rod 30 on the right side and push the push rod 30 on the right side to move downward, and the push rod 30 on the right side drives the RF spring 29 on the right side to move downward, so that the two ends of the RF spring 29 are respectively in contact with the first static contact and the second static contact on the right side, thereby realizing the connection between the connector channel on the right and the center inner conductor; when the driving current instruction is switched, the iron core shaft 25 moves to the left along the center line of the excitation coil 24, and the driving shaft 28 drives the top end of the swing arm 31 to move leftward, and the cross structure formed by the swing arm 31 and the swing arm spring 31 rotates counterclockwise in the vertical direction. The swing arm spring 31 on the left side of the swing arm 31 is pressed down, while the swing arm spring 31 on the right side of the swing arm 31 is raised. At this time, the first static contact and the second static contact at the two ends of the RF spring 29 on the right side are separated, and the connector channel on the right side is disconnected from the center inner conductor. As the swing arm spring 31 on the left side of the swing arm 31 is pressed down, the swing arm spring 31 on the left side contacts with the push rod 30 on the left side and pushes the push rod 30 on the left side to move downward. The push rod 30 on the left side drives the RF spring 29 on the left side to move downward, so that the first static contact and the second static contact at the two ends of the RF spring 29 on the left side are contacted, respectively, to realize the connection between the connector channel on the left side and the center inner conductor, thereby realizing the switching of the RF channel.

[0035] In order to obtain a better contact effect and ensure that the movement of the RF reed 29 is more stable and reliable, the present embodiment also includes a plurality of guide rods 32, which are fixed under the RF cover plate 3. The RF reed 29 is provided with guide holes, and the guide rods 32 pass through the guide holes on the RF reed 29 accordingly, and the RF reed 29 can move up and down along the guide rods 32. Through the action of the guide rods 32, the up and down movement of the RF reed 29 is more stable and reliable, so that the contact between the RF reed 29 and the first static contact and the second static contact is more reliable.

[0036] Preferably, the swing arm spring 27 of this embodiment is made of elastic material to ensure that the swing arm spring presses the push rod and generates overpressure displacement, ensures the contact reliability between the spring and the push rod, and ensures that the product can still work normally and reliably under vibration conditions. It should be noted that there are many elastic materials, and it is easy for those skilled in the art to select a suitable elastic material to make the swing arm spring, so this embodiment will not cite examples one by one.

[0037] Preferably, the magnet 22 of this embodiment is a permanent magnet. After power is cut off, the permanent magnet can provide a holding force for the push rod to press the spring leaf downward.

[0038] This embodiment provides a method for implementing switch driving using the above-mentioned double-pole four-throw switch driving structure, comprising the following steps:

[0039] Step 1: After the driving component is powered on, the excitation coil 24 generates a magnetic field, which offsets the existing attraction magnetic field, enhances the magnetic field strength at the magnetic gap, and transmits the electromagnetic field to the iron core shaft 25, forming an electromagnetic field at both ends of the iron core shaft 25. According to the principle that like directions repel and opposite directions attract, under the action of the magnetic field force, the iron core shaft 25 moves horizontally to the left or right along the center line of the excitation coil 24;

[0040] Step 2: The driving shaft 28 follows the core shaft 25 to make the same horizontal lateral movement, and the top of the swing arm 31 deflects to the left or right under the driving action of the driving shaft 28, that is, the cross structure formed by the swing arm 31 and the swing arm spring 27 rotates in the vertical plane with the shaft core 26 as the rotation axis;

[0041] Step 3: During the rotation of the cross structure formed by the swing arm 31 and the swing arm spring 27, one end of the swing arm spring 27 is pressed down and the other end is raised, and the downwardly pressed swing arm spring 27 pushes the push rod 30 to move downward, and the RF spring 29 corresponding to the lower end of the push rod 30 moves downward accordingly, so that the two ends of the RF spring 29 are respectively in contact with the corresponding first static contact and the second static contact, thereby realizing the connection between the corresponding connector channel and the center inner conductor;

[0042] Step 4: After switching the driving current, the driving shaft 28 follows the core shaft 25 to make a reverse horizontal lateral movement. At the same time, under the action of the elastic element, the end of the swing arm spring 27 that was originally in a downward pressure state becomes an upward state, and the RF spring 29 is separated from the corresponding first static contact and second static contact, while the swing arm spring 27 that was originally in an upward state becomes a downward pressure state, and pushes the push rod 30 to move downward, so that the two ends of the RF spring 29 corresponding to the lower end of the push rod 30 are respectively in contact with the corresponding first static contact and second static contact, thereby realizing the connection between the corresponding connector channel and the center inner conductor, and realizing the switching of the RF channel.

[0043] The present invention converts the horizontal displacement generated by the driving component into a displacement in the vertical direction by adopting the above-mentioned structure and method, and then realizes the switching of the RF channel, thereby achieving a horizontal layout of the switch structure. Compared with the traditional vertical layout, the present invention greatly compresses the overall size of the switch structure in the vertical direction, which can greatly meet the use conditions of the switch in a small space.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-pole four-throw switch driving structure, characterized in that: The invention comprises a radio frequency cavity (1), a driving component (2), a radio frequency cover plate (3) and a transmission component, wherein two groups of static contacts are arranged in the radio frequency cavity, each group of static contacts respectively comprises a first static contact and a second static contact, the first static contact is connected to the connector channel, and the second static contact is connected to the central inner conductor, two groups of moving contacts are arranged at the end of the transmission component, each group of moving contacts respectively comprises a first moving contact and a second moving contact, the radio frequency cover plate (3) is arranged on the radio frequency cavity (1) and seals the radio frequency cavity (1), the driving component (2) is arranged on the radio frequency cover plate (3), and the driving component (2) is used to generate a lateral displacement output and drive the transmission component to generate a longitudinal displacement output, thereby realizing the contact connection between the first moving contact of the corresponding group and the first static contact and the contact connection between the second moving contact and the second static contact, thereby realizing the connection between the connector channel and the central inner conductor; The driving assembly comprises an outer conductor (21), a magnet (22), an inner conductor (23), two excitation coils (24), an iron core shaft (25) and a driving shaft (28); the S pole and the N pole of the magnet (22) are respectively connected to the outer conductor (21) and the inner conductor (23); the two excitation coils (24) are arranged between the two S poles formed by the outer conductor (21); the iron core shaft (25) is located in the two excitation coils (24); and the driving shaft (28) is fixed on the iron core shaft (25); The transmission assembly comprises a set of swing assemblies and two sets of pushing assemblies, the swing assembly comprises a swing arm (31), an axis core (26) and a swing arm reed (27), the swing arm (31) is located above the radio frequency cover plate (3), a U-shaped opening is provided at the top of the swing arm, the drive shaft (28) is located in the U-shaped opening at the top of the swing arm (31), the middle part of the swing arm (31) is fixedly connected to the swing arm reed (27) to form a cross structure, the axis core (26) is installed on the swing arm (31), and the cross structure formed by the swing arm (31) and the swing arm reed (27) can rotate in a vertical plane with the axis core (26) as the rotation axis; The two groups of pushing components are respectively located on both sides of the swing arm (31) and directly below the swing arm reed (27). The pushing components include a push rod (30) and a radio frequency reed (29). The top end of the push rod (30) is located directly below the swing arm reed (27). The lower end of the push rod (30) is connected to the radio frequency reed (29). The two ends of the radio frequency reed (29) are respectively a first moving contact and a second moving contact. The push rod (30) is sleeved with an elastic element (33) for resetting.

2. A double-pole four-throw switch driving structure according to claim 1, characterized in that: The magnet (22) is a permanent magnet.

3. A double-pole four-throw switch driving structure according to claim 1, characterized in that: It also includes a plurality of guide rods (32), wherein the guide rods (32) are fixed below the radio frequency cover plate (3), the radio frequency reed (29) is provided with guide holes, the guide rods (32) pass through the guide holes on the radio frequency reed (29) correspondingly, and the radio frequency reed (29) can move up and down along the guide rods (32).

4. A double-pole four-throw switch driving structure according to claim 1, characterized in that: The swing arm spring (27) is made of elastic material.

5. A method for realizing switch driving by using the double-pole four-throw switch driving structure according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: After the driving component is powered on, the excitation coil (24) generates a magnetic field, which offsets the existing attraction magnetic field and enhances the magnetic field strength at the magnetic gap. The electromagnetic field is transmitted to the iron core shaft (25), and an electromagnetic field is formed at both ends of the iron core shaft (25). According to the principle that like directions repel each other and opposite directions attract each other, under the action of the magnetic field force, the iron core shaft (25) moves horizontally to the left or right along the center line of the excitation coil (24); Step 2: The driving shaft (28) follows the core shaft (25) to make the same horizontal lateral movement, and the top of the swing arm (31) deflects to the left or right under the driving action of the driving shaft (28), that is, the cross structure formed by the swing arm (31) and the swing arm spring (27) rotates in the vertical plane with the shaft core (26) as the rotation axis; Step 3: During the rotation of the cross structure formed by the swing arm (31) and the swing arm spring (27), one end of the swing arm spring (27) is pressed downward and the other end is raised, and the downwardly pressed swing arm spring (27) pushes the push rod (30) to move downward, and the RF spring (29) corresponding to the lower end of the push rod (30) moves downward accordingly, so that the two ends of the RF spring (29) are respectively in contact with the corresponding first static contact and the second static contact, thereby realizing the connection between the corresponding connector channel and the center inner conductor; Step 4: After the driving current is switched, the driving shaft (28) follows the core shaft (25) to make a reverse horizontal lateral movement. At the same time, under the action of the elastic element, the end of the swing arm spring (27) that was originally in a downward pressure state becomes an upward state, and the radio frequency spring (29) is separated from the corresponding first static contact and second static contact. The swing arm spring (27) that was originally in an upward state becomes a downward pressure state and pushes the push rod (30) to move downward, so that the two ends of the radio frequency spring (29) corresponding to the lower end of the push rod (30) are respectively in contact with the corresponding first static contact and second static contact, thereby realizing the connection between the corresponding connector channel and the center inner conductor, and realizing the switching of the radio frequency channel.

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