A radio frequency mechanical switch with self-holding function

Abstract

The present invention relates to the field of radio frequency mechanical switches, and discloses a radio frequency mechanical switch with a self-holding function, comprising an output interface, a cover, a switch assembly, and a signal interface assembly, wherein the output interface is arranged at the top of the cover, the switch assembly is arranged inside the cover, the signal interface assembly is arranged at the bottom of the switch assembly, the signal interface assembly is provided with a total signal interface and a sub-signal interface, and the switch assembly comprises a mechanical motion assembly and a signal transmission assembly. Through a mechanism combining electromagnetic drive with permanent magnet adsorption, the state of a moving iron needle is stably maintained after power failure. When the coil column is energized, the moving iron needle is controlled by the direction of the current. After power failure, the moving iron needle is adsorbed by the first magnet due to the characteristics of the iron material, so that the switch can reliably maintain the current state without continuous power supply, thereby improving stability and reliability.

Description

Technical Field

[0001] This invention relates to the field of radio frequency mechanical switch technology, specifically to a radio frequency mechanical switch with a self-holding function. Background Art

[0002] With the iterative development of electronic technology, fields such as radio frequency communication and signal processing have placed higher demands on the functionality and reliability of mechanical switches. Traditional multi-pole multi-throw (MPLT) mechanical switches mainly adopt a power-off reset design, relying on springs or other structures to return to the initial state after power failure. However, in scenarios such as aerospace, wireless communication equipment, and industrial control, devices often require switches to maintain their current connection state after power failure (i.e., "self-holding" function) to ensure consistency of state upon system restart or reduce repetitive configuration steps. As these application scenarios expand, the market demand for radio frequency mechanical switches with self-holding functionality is gradually increasing. Against this backdrop, developing a mechanical switch that can achieve state holding, has a simple structure, and is suitable for high-frequency signal transmission has become an important direction for technological improvement in the industry.

[0003] Traditional multi-pole multi-throw (MPLT) mechanical switches are mostly "power-off reset type," meaning they automatically return to their initial state after a power outage and cannot maintain their operating state before the power failure. Maintaining the state requires continuous power supply or additional complex mechanical locking structures, resulting in high energy consumption and structural complexity. Furthermore, some attempts to achieve self-holding functionality rely on complex mechanical structures or additional control circuits, leading to high manufacturing costs, assembly difficulties, and limited widespread application. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a radio frequency mechanical switch with a self-holding function. This solves the problems of traditional multi-pole multi-throw mechanical switches, which are mostly "power-off reset type" and automatically return to the initial state after power failure, failing to maintain the working state before power failure. Maintaining the state requires continuous power supply or the addition of complex mechanical locking structures, resulting in high energy consumption and complex structures. At the same time, some solutions for achieving the self-holding function rely on complex mechanical structures or additional control circuits, resulting in high manufacturing costs, difficult assembly, and limited application.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A radio frequency mechanical switch with a self-holding function includes an output interface, a housing, a switch assembly, and a signal interface assembly. The output interface is located at the top of the housing, the switch assembly is located inside the housing, and the signal interface assembly is located at the bottom of the switch assembly. The signal interface assembly is provided with a main signal interface and a sub-signal interface. The switch assembly includes a mechanical motion component and a signal transmission component.

[0007] Preferably, the mechanical motion component includes a PCB board, with a first screw connected inside the PCB board, a baffle connected to the outer wall of the first screw, a first iron plate connected to the outer wall of the first screw, a second iron plate connected to the outer wall of the first screw, a metal plate connected to the outer wall of the first screw, and a nut threadedly connected to the outer wall of the first screw.

[0008] Preferably, the outer wall of the first screw is connected to a first stop post, the top end of the first stop post is connected to the bottom end of the PCB board, and the bottom end of the first stop post is connected to the top end of the first iron plate. The outer wall of the first screw is connected to a second plastic stop post, the top end of the second plastic stop post is connected to the bottom end of the second iron plate, and the bottom end of the second plastic stop post is connected to the top end of the metal plate. The outer wall of the first screw is connected to a first plastic stop post, the top end of the first plastic stop post is connected to the bottom end of the baffle, and the bottom end of the first plastic stop post is connected to the top end of the second iron plate.

[0009] Preferably, a first magnet is provided at the bottom of the first iron plate, with the upper part of the first magnet being the first N pole and the lower part of the first magnet being the first S pole; a second magnet is provided at the top of the second iron plate, with the lower part of the second magnet being the second N pole and the upper part of the second magnet being the second S pole.

[0010] Preferably, the mechanical motion component further includes a moving iron needle, which includes an iron needle column, an iron needle cap, and an iron needle head. The bottom end of the iron needle cap is fixedly connected to the bottom end of the iron needle column, and the bottom end of the iron needle column is fixedly connected to the iron needle head. A coil column is connected to the outer wall of the moving iron needle, and the coil column is provided with a copper wire start end and a copper wire end end. The outer wall of the moving iron needle is connected to the inner wall of the second magnet, and the top end of the moving iron needle is connected to the bottom end of the first magnet.

[0011] Preferably, the mechanical motion component further includes a base plate, a third screw is connected inside the base plate, a second stop post is provided at the top of the base plate, a threaded groove is formed on the inner wall of the second stop post, the outer wall of the third screw is threadedly connected to the inner wall of the threaded groove, and a second screw is connected inside the metal plate, the outer wall of the second screw is threadedly connected to the inner wall of the threaded groove.

[0012] Preferably, the signal transmission component includes a fixing plate and a switch panel. A fourth screw is connected inside the fixing plate, and a push rod is connected inside the fixing plate. A groove is provided at one end of the push rod, and a spring is slidably connected to the outer wall of the push rod. The outer wall of the fourth screw is threadedly connected to the inside of the switch panel, and the top end of the push rod is connected to the bottom end of the moving iron needle.

[0013] Preferably, the mechanical motion component further includes a movable spring, the outer wall of which has a movable spring groove, the inner wall of which is connected to the inner wall of the movable spring groove, the movable spring being electrically connected to the sub-signal interface, the movable spring being electrically connected to the main signal interface, and a connecting component being provided inside the fixed plate.

[0014] Preferably, the connecting assembly includes a second movable spring and a second push rod. The outer wall of the second push rod is slidably connected to the inside of the fixed plate, the outer wall of the spring is slidably connected to the outer wall of the second push rod, one end of the second push rod has a slot, the outer wall of the second movable spring has a boss, the outer wall of the boss is connected to the inner wall of the slot, and the top end of the second push rod is connected to the bottom end of the moving iron needle.

[0015] Preferably, the second movable reed is electrically connected to the sub-signal interface and the second movable reed is electrically connected to the main signal interface.

[0016] Working principle: When the potential at the beginning of the copper wire is greater than that at the end, the cap on the moving iron needle in the middle of the coil column will be given S-pole magnetism; conversely, it will be given N-pole magnetism. The upper half of the first magnet is the first N-pole, and the lower half is the first S-pole. The first magnet is mounted facing forward on the first iron plate, and the other part of the second magnet is mounted facing backward on the first iron plate, with the upper end as the second S-pole and the lower end as the second N-pole. When the coil column is energized, when the potential at the beginning of the copper wire is greater than that at the end, the S-pole magnetism of the iron needle cap will repel the upper first S-pole and attract the lower second N-pole, causing the moving iron needle to move downward; conversely, it will move upward. After the power is turned off, the moving iron needle will lose its magnetism. Because the moving iron needle is made of iron, it has the characteristic of being attracted by the first magnet, so after the power is turned off, the moving iron needle will maintain its original state.

[0017] When the moving iron needle is pressed down, it will press down the push rod and move the moving spring plate down at the same time, which will connect the main signal interface and the sub-signal interface. When the push rod moves up, the spring will push the push rod up and move the moving spring plate up at the same time, which will disconnect the main signal interface and the sub-signal interface.

[0018] As an improvement, the movable spring has a boss and the push rod has a slot. When the moving iron needle is pressed down, it will press down the push rod, and at the same time move the movable spring downward, so that the main signal interface and the sub-signal interface can be connected. When the push rod is moved up, the spring will push the push rod upward, and at the same time move the movable spring upward, so that the main signal interface and the sub-signal interface can be disconnected. The movable spring has better impedance continuity and the performance of the RF mechanical switch is better.

[0019] This invention provides a radio frequency mechanical switch with a self-holding function. It has the following advantages:

[0020] 1. This invention achieves stable maintenance of the moving iron needle state after power failure by combining electromagnetic drive with permanent magnet adsorption mechanism. When the coil column is energized, the moving iron needle is controlled by the direction of the current. After power failure, the moving iron needle is attracted by the first magnet due to the properties of iron material, so that the switch can reliably maintain the current state without continuous power supply, thus improving stability and reliability.

[0021] 2. In this invention, the first magnet and the second magnet are installed at different positions to form a specific magnetic field environment. When the coil column is energized, the iron needle cap in the middle of the coil column will be given different polarities of magnetism according to the different current directions. It will interact with the first magnet and the second magnet to make the moving iron needle move up or down, thereby achieving precise position control.

[0022] 3. In this invention, the movable spring has a boss and the push rod has a groove. When the moving iron needle is pressed down, it will press down the push rod and move the movable spring downwards, thus connecting the main signal interface and the sub-signal interface. When the push rod moves up, the spring will push the push rod up and move the movable spring upwards, thus disconnecting the main signal interface and the sub-signal interface. The movable spring has better impedance continuity and better performance of the radio frequency mechanical switch. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 This is a partial structural diagram of the switching assembly of the present invention;

[0025] Figure 3 This is a bottom view diagram of the present invention;

[0026] Figure 4 This is an exploded view of the switching assembly of the present invention;

[0027] Figure 5 This is a schematic diagram of the overall switching assembly of the present invention;

[0028] Figure 6 This is a schematic diagram of the internal structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the moving iron needle structure of the present invention;

[0030] Figure 8 This is a partial structural diagram of the second stop post of the present invention;

[0031] Figure 9 This is a schematic diagram of a partial structure of the coil post of the present invention;

[0032] Figure 10This is a partial structural diagram of the first magnet of the present invention;

[0033] Figure 11 This is a schematic diagram of the motion state of the switching component of the present invention;

[0034] Figure 12 This is a schematic diagram of the downward pressing of the moving iron needle according to the present invention;

[0035] Figure 13 This is a schematic diagram of the upward movement of the moving iron needle according to the present invention;

[0036] Figure 14 This is an exploded view of the signal interface component of the present invention;

[0037] Figure 15 This is a partial structural diagram of the push rod of the present invention;

[0038] Figure 16 This is a partial structural diagram of the fixing plate of the present invention;

[0039] Figure 17 This is a schematic cross-sectional view of the entire invention;

[0040] Figure 18 This is a schematic diagram of a partial structure of the top rod of the present invention.

[0041] The components include: 1. Output interface; 2. Housing; 3. Switch assembly; 31. Mechanical motion assembly; 3101. First screw; 3102. PCB board; 3103. First stop post; 3104. First iron plate; 3105. Nut; 3106. First magnet; 3107. Second magnet; 3108. First N pole; 3109. First S pole; 3110. Second N pole; 3111. Second S pole; 3112. Plastic stop post one; 3113. Plastic stop post two; 3114. Baffle; 3115. Second iron plate; 3116. Coil post; 3117. Second stop post; 3118. Metal plate; 3119. Second screw; 312. 0. Third screw; 3121. Base plate; 3122. Moving iron needle; 3123. Iron needle cap; 3124. Iron needle post; 3125. Iron needle head; 3126. Copper wire end; 3127. Copper wire start; 3129. Threaded groove; 32. Signal transmission assembly; 3201. Fourth screw; 3202. Top rod one; 3203. Fixing plate; 3204. Spring; 3205. Moving spring one; 3206. Switch panel; 3207. Groove one; 3208. Moving spring groove; 4. Signal interface assembly; 41. Main signal interface; 42. Sub-signal interface; 5. Moving spring two; 51. Boss; 52. Slot; 6. Top rod two. Detailed Implementation

[0042] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0043] Please see the appendix Figure 1 - Appendix Figure 18 This invention provides a radio frequency mechanical switch with a self-holding function, including an output interface 1, a housing 2, a switch assembly 3, and a signal interface assembly 4. The output interface 1 is disposed at the top of the housing 2, the switch assembly 3 is disposed inside the housing 2, and the signal interface assembly 4 is disposed at the bottom of the switch assembly 3. The signal interface assembly 4 is provided with a main signal interface 41 and a sub-signal interface 42. The switch assembly 3 includes a mechanical motion component 31 and a signal transmission component 32.

[0044] Specifically, the housing 2 primarily serves a protective function, preventing the internal mechanical motion components 31 and signal transmission components 32 from being affected by the external environment. It also provides some electromagnetic shielding, reducing interference from internal electromagnetic signals to the external environment and preventing external electromagnetic interference from affecting the signal transmission within the switch. The output interface 1 is the port connecting the switch to external devices, used to output the signal after switching to subsequent circuits or devices, realizing signal transmission to the outside and acting as an output signal in the entire signal transmission system. The mechanical motion component 31 is the core component for the switch's self-holding function and motion control, used to implement the self-holding function. The signal transmission component 32 is responsible for enabling and disabling the signal.

[0045] The mechanical motion component 31 includes a PCB board 3102. A first screw 3101 is internally connected to the PCB board 3102. A baffle 3114 is connected to the outer wall of the first screw 3101. A first iron plate 3104 is connected to the outer wall of the first screw 3101. A second iron plate 3115 is connected to the outer wall of the first screw 3101. A metal plate 3118 is connected to the outer wall of the first screw 3101. A nut 3105 is threaded onto the outer wall of the first screw 3101. A first stop post 3103 is connected to the outer wall of the first screw 3101. The top end of the first stop post 3103 is connected to the bottom end of the PCB board 3102, and the bottom end of the first stop post 3103 is connected to the first... At the top of the iron plate 3104, a plastic stop post 2 3113 is connected to the outer wall of the first screw 3101. The top of the plastic stop post 2 3113 is connected to the bottom of the second iron plate 3115, and the bottom of the plastic stop post 2 3113 is connected to the top of the metal plate 3118. A plastic stop post 1 3112 is connected to the outer wall of the first screw 3101. The top of the plastic stop post 1 3112 is connected to the bottom of the baffle 3114, and the bottom of the plastic stop post 1 3112 is connected to the top of the second iron plate 3115. A first magnet 3106 is provided at the bottom of the first iron plate 3104. The upper part of the first magnet 3106 is the first N pole 3108, and the lower part of the first magnet 3106 is... The first S pole 3109, the top of the second iron plate 3115 is provided with a second magnet 3107, the lower part of the second magnet 3107 is the second N pole 3110, and the upper part of the second magnet 3107 is the second S pole 3111; the mechanical motion component 31 also includes a moving iron needle 3122, the moving iron needle 3122 includes an iron needle post 3124, an iron needle cap 3123 and an iron needle head 3125, the bottom end of the iron needle cap 3123 is fixedly connected to the bottom end of the iron needle post 3124, the bottom end of the iron needle post 3124 is fixedly connected to the iron needle head 3125, the outer wall of the moving iron needle 3122 is connected to a coil post 3116, the coil post 3116 is provided with a copper wire starting end 3127 and a copper The end of the line 3126, the outer wall of the moving iron needle 3122 is connected to the inner wall of the second magnet 3107, and the top end of the moving iron needle 3122 is connected to the bottom end of the first magnet 3106; the mechanical motion assembly 31 also includes a base plate 3121, the interior of the base plate 3121 is connected to a third screw 3120, the top end of the base plate 3121 is provided with a second stop post 3117, the inner wall of the second stop post 3117 is provided with a threaded groove 3129, the outer wall of the third screw 3120 is threadedly connected to the inner wall of the threaded groove 3129, the interior of the metal plate 3118 is connected to a second screw 3119, and the outer wall of the second screw 3119 is threadedly connected to the inner wall of the threaded groove 3129.

[0046] Specifically, when the winding extends from the coil post 3116, the copper wire is divided into two ends: the copper wire end 3126 and the copper wire start end 3127. When the potential of the copper wire start end 3127 is greater than that of the copper wire end 3126, the iron needle cap 3123 on the moving iron needle 3122 in the middle of the coil post 3116 will be endowed with S pole magnetism; conversely, the iron needle cap 3123 will be endowed with N pole magnetism. The upper half of the first magnet 3106 is the first N pole 3108, and the lower half is the first S pole 3109. The first magnet 3106 is mounted in the forward direction on the first iron plate 3104, and the other part of the second magnet 3107 is mounted in the reverse direction on the first iron plate 3104. The upper end is the second S pole 3111, and the lower end is the second N pole 3110. When the coil post 3116 is energized, when the potential of the copper wire starting end 3127 is greater than that of the copper wire ending end 3126, the S pole magnetism of the iron needle cap 3123 will repel the upper first S pole 3109 and attract the lower second N pole 3110, causing the moving iron needle 3122 to move downward. Conversely, it will cause the moving iron needle 3122 to move upward. After the power is turned off, the moving iron needle 3122 will lose its magnetism. Since the moving iron needle 3122 is made of iron, it has the characteristic of being attracted by the first magnet. Therefore, after the power is turned off, the moving iron needle 3122 will maintain its original state. By combining electromagnetic drive with permanent magnet adsorption, the moving iron needle 3122 maintains a stable position after power failure. When the coil post 3116 is energized, the moving iron needle 3122 is controlled by the direction of the current. After power failure, the moving iron needle 3122 is attracted by the first magnet 3106 due to the properties of iron, maintaining its current position without continuous power supply. This solves the problem of power-off reset in traditional switches, saving energy and simplifying control logic. In this design, the first magnet 3106 and the second magnet 3107 are installed in different positions, forming a specific magnetic field environment. When the coil post 3116 is energized, the iron needle cap 3123 in the middle of the coil post 3116 is given different polarities of magnetism depending on the direction of the current, interacting with the first magnet 3106 and the second magnet 3107 to move the moving iron needle 3122 upwards or downwards, achieving precise position control. After power failure, because the moving iron needle 3122 is made of iron, it is attracted by the surrounding magnets, thus stably maintaining its position before power failure. This self-holding function allows the switch to reliably maintain its current state without requiring continuous power, thus improving stability and reliability.

[0047] The signal transmission component 32 includes a fixed plate 3203 and a switch panel 3206. A fourth screw 3201 is connected inside the fixed plate 3203. A push rod 3202 is connected inside the fixed plate 3203. A groove 3207 is provided at one end of the push rod 3202. A spring 3204 is slidably connected to the outer wall of the push rod 3202. The outer wall of the fourth screw 3201 is threaded to the inside of the switch panel 3206. The top end of the push rod 3202 is connected to the bottom end of the moving iron needle 3122. The mechanical motion component 31 also includes a moving spring 3205. A moving spring groove 3208 is provided on the outer wall of the moving spring 3205. The inner wall of the groove 3207 is connected to the inner wall of the moving spring groove 3208. The moving spring 3205 is electrically connected to the sub-signal interface 42 and to the main signal interface 41. A connecting component is provided inside the fixed plate 3203.

[0048] Specifically, when the moving iron needle 3122 is pressed down, it will press down the push rod 3202 and move the moving spring 3205 down, which will connect the main signal interface 41 and the sub-signal interface 42. When the push rod 3202 is moved up, the spring 3204 will push the push rod 3202 up and move the moving spring 3205 up, which will disconnect the main signal interface 41 and the sub-signal interface 42. Example 2

[0049] Please see the appendix Figure 14 - Appendix Figure 18 The connecting assembly includes a movable spring plate 5 and a push rod 6. The outer wall of the push rod 6 is slidably connected to the inside of the fixed plate 3203. The outer wall of the spring 3204 is slidably connected to the outer wall of the push rod 6. One end of the push rod 6 is provided with a slot 52. The outer wall of the movable spring plate 5 is provided with a boss 51. The outer wall of the boss 51 is connected to the inner wall of the slot 52. The top end of the push rod 6 is connected to the bottom end of the moving iron needle 3122. The movable spring plate 5 is electrically connected to the sub-signal interface 42 and electrically connected to the main signal interface 41.

[0050] Specifically, as an improvement, the movable spring 3205 has a boss 51, and the push rod 6 has a slot 52. When the moving iron needle 3122 presses down, it will press down the push rod 6 and move the movable spring 5 down at the same time, so that the main signal interface 41 and the sub-signal interface 42 can be connected. When the push rod 6 moves up, the spring 3204 will push the push rod 6 up and move the movable spring 5 up at the same time, so that the main signal interface 41 and the sub-signal interface 42 can be disconnected. The movable spring 5 has better impedance continuity and the performance of the radio frequency mechanical switch is better.

[0051] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A radio frequency mechanical switch with a self-holding function, comprising an output interface (1), a housing (2), a switch assembly (3), and a signal interface assembly (4), characterized in that, The output interface (1) is located at the top of the housing (2), the switch assembly (3) is located inside the housing (2), and the signal interface assembly (4) is located at the bottom of the switch assembly (3). The signal interface assembly (4) is provided with a main signal interface (41) and a sub-signal interface (42). The switch assembly (3) includes a mechanical motion assembly (31) and a signal transmission assembly (32). The mechanical motion assembly (31) includes a PCB board (3102). A first screw (3101) is connected inside the PCB board (3102). A baffle (3114) is connected to the outer wall of the first screw (3101), a first iron plate (3104) is connected to the outer wall of the first screw (3101), a second iron plate (3115) is connected to the outer wall of the first screw (3101), a metal plate (3118) is connected to the outer wall of the first screw (3101), a nut (3105) is threaded onto the outer wall of the first screw (3101), a first magnet (3106) is provided at the bottom end of the first iron plate (3104), and the upper part of the first magnet (3106) is a first N. The first magnet (3108) has a first S pole (3109) at its lower part, and a second magnet (3107) is provided at the top of the second iron plate (3115). The second magnet (3107) has a second N pole (3110) at its lower part and a second S pole (3111) at its upper part. The mechanical motion assembly (31) also includes a moving iron needle (3122), which includes an iron needle post (3124), an iron needle cap (3123), and an iron needle head (3125). The bottom end of the iron needle cap (3123) is fixedly connected to the bottom end of the iron needle column (3124), and the bottom end of the iron needle column (3124) is fixedly connected to the iron needle head (3125). The outer wall of the moving iron needle (3122) is connected to the coil column (3116), and the coil column (3116) is provided with a copper wire starting end (3127) and a copper wire ending end (3126). The outer wall of the moving iron needle (3122) is connected to the inner wall of the second magnet (3107), and the top end of the moving iron needle (3122) is connected to the bottom end of the first magnet (3106).

2. The radio frequency mechanical switch with self-holding function according to claim 1, characterized in that, The outer wall of the first screw (3101) is connected to a first stop post (3103). The top end of the first stop post (3103) is connected to the bottom end of the PCB board (3102). The bottom end of the first stop post (3103) is connected to the top end of the first iron plate (3104). The outer wall of the first screw (3101) is connected to a second plastic stop post (3113). The top end of the second plastic stop post (3113) is connected to the bottom end of the second iron plate (3115). The bottom end of the second plastic stop post (3113) is connected to the top end of the metal plate (3118). The outer wall of the first screw (3101) is connected to a first plastic stop post (3112). The top end of the first plastic stop post (3112) is connected to the bottom end of the baffle (3114). The bottom end of the first plastic stop post (3112) is connected to the top end of the second iron plate (3115).

3. A radio frequency mechanical switch with a self-holding function according to claim 1, characterized in that, The mechanical motion component (31) also includes a base plate (3121), the interior of which is connected to a third screw (3120), and the top of the base plate (3121) is provided with a second stop post (3117). The inner wall of the second stop post (3117) is provided with a threaded groove (3129). The outer wall of the third screw (3120) is threadedly connected to the inner wall of the threaded groove (3129). The interior of the metal plate (3118) is connected to a second screw (3119), and the outer wall of the second screw (3119) is threadedly connected to the inner wall of the threaded groove (3129).

4. A radio frequency mechanical switch with a self-holding function according to claim 1, characterized in that, The signal transmission component (32) includes a fixing plate (3203) and a switch panel (3206). A fourth screw (3201) is connected inside the fixing plate (3203). A push rod (3202) is connected inside the fixing plate (3203). A groove (3207) is provided at one end of the push rod (3202). A spring (3204) is slidably connected to the outer wall of the push rod (3202). The outer wall of the fourth screw (3201) is threadedly connected to the inside of the switch panel (3206). The top end of the push rod (3202) is connected to the bottom end of the moving iron needle (3122).

5. A radio frequency mechanical switch with a self-holding function according to claim 4, characterized in that, The mechanical motion component (31) also includes a movable spring (3205), the outer wall of which is provided with a movable spring groove (3208), the inner wall of the groove (3207) is connected to the inner wall of the movable spring groove (3208), the movable spring (3205) is electrically connected to the sub-signal interface (42), the movable spring (3205) is electrically connected to the main signal interface (41), and the fixed plate (3203) is provided with a connecting component inside.

6. A radio frequency mechanical switch with a self-holding function according to claim 5, characterized in that, The connecting assembly includes a movable spring plate 2 (5) and a push rod 2 (6). The outer wall of the push rod 2 (6) is slidably connected to the inside of the fixed plate (3203). The outer wall of the spring (3204) is slidably connected to the outer wall of the push rod 2 (6). One end of the push rod 2 (6) is provided with a slot (52). The outer wall of the movable spring plate 2 (5) is provided with a boss (51). The outer wall of the boss (51) is connected to the inner wall of the slot (52). The top end of the push rod 2 (6) is connected to the bottom end of the moving iron needle (3122).

7. A radio frequency mechanical switch with a self-holding function according to claim 6, characterized in that, The second movable reed (5) is electrically connected to the sub-signal interface (42), and the second movable reed (5) is electrically connected to the main signal interface (41).

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