Coaxial radio frequency switch with rolling compression shaft

Abstract

The application discloses a coaxial radio frequency switch with a rolling pressure shaft, which comprises an upper cover plate, a lower cover plate, a base and a soft magnetic rocker plate assembly, a pressure spring plate is arranged below the soft magnetic rocker plate assembly, a left push rod assembly and a right push rod assembly are arranged below the lower cover plate, the top push rods of the left push rod assembly and the right push rod assembly penetrate through the lower cover plate, and a rolling pressure shaft is arranged between the top push rods of the left push rod assembly and the right push rod assembly and the pressure spring plate. Due to the limitation of the guide rail groove, the verticality of the pushing force acting on the push rod 2 is ensured, so that the repeatability and reliability of the switch function are ensured.

Description

Technical Field

[0001] This invention relates to switches or relays with flexible limiting bands. More specifically, this invention relates to coaxial radio frequency switches with rolling pressure shafts. Background Technology

[0002] A coaxial RF switch is a special type of electromechanical relay (or switch) in which a radio frequency (RF) signal is connected or disconnected between terminals in the switch. Typically, a coaxial RF switch uses a push rod to actuate a movable conductive plate to contact a pair of coaxial connector terminals, thus connecting the RF signal path between the two coaxial connector terminals.

[0003] A common design involves a seesaw-shaped soft magnet oscillating under the action of a pair of electromagnets to actuate a push rod. Existing coaxial RF switches achieve connection and disconnection by using a pressure spring to press the push rod assembly up and down. However, because the existing coaxial pressure spring presses the push rod assembly at an angle, the force on the push rod assembly is not vertical. During the descent of the push rod assembly, there is an outward force, resulting in poor contact performance between the movable conductive plate of the push rod and the coaxial connector, thus reducing the repeatability and reliability of the coaxial RF switch. Summary of the Invention

[0004] The existing coaxial pressure springs are inclined to press the push rod assembly, causing the force on the push rod assembly to be not vertical. During the descent of the push rod assembly, there will be an outward force, and the contact performance between the movable conductive plate of the push rod and the coaxial connector is poor, which reduces the possibility of coaxial RF switching. The technical problem to be solved by the present invention is to provide a coaxial RF switch with a rolling pressure shaft.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] A coaxial radio frequency switch with a rolling pressure shaft includes an upper cover plate, a lower cover plate, a base, and a soft magnetic rocker assembly. A pressure spring is disposed below the soft magnetic rocker assembly. A left push rod assembly and a right push rod assembly are disposed below the lower cover plate. The top push rods of the left and right push rod assemblies pass through the lower cover plate. A rolling pressure shaft is disposed between the top push rods of the left and right push rod assemblies and the pressure spring.

[0007] The preferred embodiment of the above solution is: a guide rail groove is provided above the lower cover plate, and the end of the rolling pressure shaft passes through the guide rail groove.

[0008] The preferred embodiment of the above scheme is as follows: a left coil assembly and a right coil assembly are provided below the upper cover plate, and both the left coil assembly and the right coil assembly are composed of an iron core and a coil.

[0009] The preferred embodiment of the above scheme is that the soft magnetic seesaw assembly further includes a soft magnetic seesaw and a rotating shaft.

[0010] The preferred embodiment of the above scheme is as follows: the left push rod assembly and the right push rod assembly further include a bottom push rod, a return spring and a movable conductive sheet.

[0011] The preferred embodiment of the above solution is as follows: a first coaxial connector, a second coaxial connector and a third coaxial connector are provided below the base, and the first coaxial connector, the second coaxial connector and the third coaxial connector all include an inner conductor core, an insulator and a shell.

[0012] Compared with the prior art, the present invention has the following beneficial effects: When the soft magnetic seesaw 31 is attracted by the magnetic core 11 of the left coil assembly 10 (electromagnet) and rotates clockwise, the pressure spring 32 pushes the rolling pressure shaft 255 and the push rod assembly 250 downwards, causing the movable conductive piece 253 to connect the center conductor 111 of the coaxial connectors 110 and 120, so that the radio frequency signal can be transmitted from the coaxial connector 110 to the coaxial connector 120 (and vice versa) (closed state). At the same time, the left push rod assembly 260 pushes upwards by the return spring 52, raising the left movable conductive piece 253 and disconnecting the radio frequency (RF) signal path between the coaxial connectors 110 and 130 (open state). During these processes, the guide groove 256 allows the rolling pressure shaft 255 to move only up and down. The rolling pressure shaft 255 is cylindrical and will rotate when subjected to displacement in other directions. Due to the restriction of the guide groove, the perpendicularity of the thrust acting on the push rod 251 is ensured, thereby ensuring the repeatability and reliability of the switching function. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a coaxial radio frequency switch structure with a rolling pressure shaft according to the present invention;

[0014] Figure 2 This is a schematic diagram of the rolling pressure shaft position in this invention;

[0015] Figure 3 This is a cross-sectional view of the rolling pressure shaft position in this invention. Detailed Implementation

[0016] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] like Figure 1 , 2 As shown in Figure 3, the manufacturing method of the coaxial radio frequency switch with the rolling pressure shaft 255 in this embodiment includes a pair of coil assemblies 10 and 20, a soft magnetic seesaw assembly 30, a permanent magnet 40, a soft magnetic plate 80, push rod assemblies 250 and 260, a rolling pressure shaft 255 and a guide rail groove 256, a cavity 70, coaxial connectors 110, 120 and 130, and a flexible limiting band 259.

[0020] The soft magnetic seesaw assembly 30 includes a soft magnetic seesaw 31, a pressure spring 32, and a rotating shaft 33.

[0021] The push rod assemblies 250 and 260 include a top push rod 251 and a bottom push rod 254, a return spring 52, and a movable conductive plate 253. A rolling pressure shaft 255 is located between the top push rod 251 and the pressure spring 32. The end of the rolling pressure shaft 255 is located in a guide groove 256. The rolling pressure shaft may be made of smooth stainless steel. The top and bottom push rods 251 and 254 may be made of any dielectric material. The return spring 52 may be made of stainless steel. One function of the return spring 52 is to push the bottom push rod 254 upward to its natural position without applying external force. The movable conductive plate 253 may be made of any conductive material, such as beryllium copper, preferably gold-plated.

[0022] Each coaxial connector 110, 120, and 130 includes a center conductor 111, a dielectric ring 112, and a housing 113. For example... Figure 1As shown in the coaxial radio frequency (RF) switch 100, when the soft magnetic rocker 31 is attracted by the magnetic core 11 of the coil assembly 10 (electromagnet) 10 and rotates clockwise, the pressure spring 32 pushes the rolling pressure shaft 255 and the push rod assembly 250 downwards, causing the movable conductive piece 253 to connect the center conductor 111 of the coaxial connectors 110 and 120, allowing the RF signal to be transmitted from the coaxial connector 110 to the coaxial connector 120 (and vice versa) (closed state). Simultaneously, the left push rod assembly 260 pushes upwards via the return spring 52, raising the left movable conductive piece 253 and disconnecting the RF signal path between the coaxial connectors 110 and 130 (open state). During these processes, the guide groove 256 restricts the rolling pressure shaft 255 to move only up and down, while limiting its displacement in other directions, ensuring the perpendicularity of the thrust acting on the push rod 251, thereby guaranteeing the repeatability and reliability of the switching function.

[0023] Conversely, when the soft magnetic seesaw 31 is rotated counterclockwise by the solenoid valve 20 of the right core 11, the corresponding push rod assembly moves in the opposite direction, which will cause the radio frequency (RF) channel between 110 and 120 to open and the RF channel between 110 and 130 to close.

[0024] It is understood that many other embodiments and combinations of different material choices and arrangements can be devised without departing from the scope of the invention. Similarly, various topologies and geometries of electromechanical relays can be formulated by changing the layout of various components.

[0025] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0026] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A coaxial radio frequency switch with a rolling pressure shaft, comprising an upper cover plate (80), a lower cover plate (72), a base (71), and a soft magnetic rocker assembly (30), characterized in that, A pressure spring (32) is provided below the soft magnetic seesaw assembly (30), and a left push rod assembly (260) and a right push rod assembly (250) are provided below the lower cover plate (72). The top push rods (251) of the left push rod assembly (260) and the right push rod assembly (250) pass through the lower cover plate (72). A rolling pressure shaft (255) is provided between the top push rods (251) of the left push rod assembly (260) and the right push rod assembly (250) and the pressure spring (32).

2. The coaxial radio frequency switch with a rolling pressure shaft according to claim 1, characterized in that, A guide groove (256) is provided above the lower cover plate (72), and the end of the rolling pressure shaft (255) passes through the guide groove (256).

3. The coaxial radio frequency switch with a rolling pressure shaft according to claim 1, characterized in that, The upper cover plate (80) is provided with a left coil assembly (10) and a right coil assembly (20) below it. The left coil assembly (10) and the right coil assembly (20) are both composed of an iron core (11) and a coil (12).

4. The coaxial radio frequency switch with a rolling pressure shaft according to claim 1, characterized in that, The soft magnetic seesaw assembly (30) also includes a soft magnetic seesaw (31) and a pivot (33).

5. The coaxial radio frequency switch with a rolling pressure shaft according to claim 1, characterized in that, The left push rod assembly (260) and the right push rod assembly (250) also include a bottom push rod (254), a return spring (52) and a movable conductive plate (253).

6. The coaxial radio frequency switch with a rolling pressure shaft according to claim 1, characterized in that, The base (71) is provided with a first coaxial connector (110), a second coaxial connector (120) and a third coaxial connector (130), each of which includes an inner conductor core (111), an insulator (112) and a shell (113).

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