Radio frequency mechanical switch with self-holding function

Abstract

The invention relates to the field of radio frequency mechanical switches, and discloses a radio frequency mechanical switch with a self-holding function, which comprises an output interface, a housing, a switch assembly and a signal interface assembly, and is characterized in that the output interface is arranged at the top end of the housing, the switch assembly is arranged in the housing, and the signal interface assembly is arranged at the bottom end of the switch assembly; the signal interface assembly is provided with a total signal interface and a branch signal interface, and the switch assembly comprises a mechanical motion assembly and a signal transmission assembly. Through a mechanism of combining electromagnetic driving and permanent magnet adsorption, stable maintenance of a moving iron needle state after power failure is realized, the moving iron needle is controlled through a current direction when a coil column is electrified, and after power failure, the moving iron needle is adsorbed by a first magnet due to the characteristics of an iron material, so that the switch can reliably maintain the current state without continuous power supply, and the switch is safe and reliable. And the stability and the reliability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of radio frequency mechanical switches, and in particular 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 communications and signal processing have placed higher demands on the functionality and reliability of mechanical switches. Traditional multi-pole, multi-throw mechanical switches mainly adopt a power-off reset design, relying on springs and other structures to return to the initial state after power failure. However, in scenarios such as aerospace, wireless communication equipment, and industrial control, equipment often requires the switch to maintain the current connection state after power failure (i.e., a "self-holding" function) to ensure state consistency when the system is restarted or to reduce repeated configuration steps. With the expansion of such application scenarios, the market demand for radio frequency mechanical switches with self-holding functions has gradually increased. In this context, the development of a mechanical switch that can achieve state retention, 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 (MPMT) mechanical switches are mostly "power-off reset" switches, meaning they automatically return to their initial state after a power outage and are unable to maintain their pre-power-off state. Maintaining this state requires continuous power or the addition of complex mechanical locking mechanisms, resulting in high energy consumption and structural complexity. Furthermore, some attempts to implement self-holding functionality rely on complex mechanical structures or additional control circuitry, resulting in high manufacturing costs and assembly difficulties, making them difficult to implement and scale. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a radio frequency mechanical switch with a self-holding function, which solves the problem that most traditional multi-pole multi-throw mechanical switches are "power-off reset type", automatically returning to the initial state after power failure, and unable to maintain the working state before power failure. If the state needs to be maintained with continuous power supply or a complex mechanical locking structure is added, there are problems of high energy consumption and complex structure. At the same time, some solutions for realizing the self-holding function rely on complex mechanical structures or additional control circuits, which have the problems of high production cost, great difficulty in assembly, and difficulty in popularization and application.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A radio frequency mechanical switch with a self-holding function includes an output interface, a cover, a switch assembly, and a signal interface assembly. The output interface is arranged at the top of the cover, the switch assembly is arranged inside the cover, and the signal interface assembly is arranged at the bottom of the switch assembly. The signal interface assembly is provided with a main signal interface and a branch signal interface. The switch assembly includes a mechanical motion assembly and a signal transmission assembly.

[0006] Preferably, the mechanical motion component includes a PCB board, the interior of the PCB board is connected to a first screw, the outer wall of the first screw is connected to a baffle, the outer wall of the first screw is connected to a first iron plate, the outer wall of the first screw is connected to a second iron plate, the outer wall of the first screw is connected to a metal plate, and the outer wall of the first screw is threadedly connected to a nut.

[0007] Preferably, the outer wall of the first screw is connected to a first stop column, the top of the first stop column is connected to the bottom end of the PCB board, the bottom end of the first stop column 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 column, the top of the second plastic stop column is connected to the bottom end of the second iron plate, the bottom end of the second plastic stop column is connected to the top end of the metal plate, the outer wall of the first screw is connected to a first plastic stop column, the top of the first plastic stop column is connected to the bottom end of the baffle, and the bottom end of the first plastic stop column is connected to the top end of the second iron plate.

[0008] Preferably, a first magnet is provided at the bottom end of the first iron plate, the upper part of the first magnet is the first N pole, and the lower part of the first magnet is the first S pole; a second magnet is provided at the top end of the second iron plate, the lower part of the second magnet is the second N pole, and the upper part of the second magnet is the second S pole.

[0009] Preferably, the mechanical motion component also includes a moving iron needle, and the moving iron needle 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. The outer wall of the moving iron needle is connected to the coil column, and the coil column is provided with a starting end and an ending end of the copper wire. 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.

[0010] Preferably, the mechanical motion component also includes a base plate, the interior of the base plate is connected to a third screw, a second stop column is provided at the top of the base plate, the inner wall of the second stop column is provided with a threaded groove, the outer wall of the third screw is threadedly connected to the inner wall of the threaded groove, the interior of the metal plate is connected to a second screw, and the outer wall of the second screw is threadedly connected to the inner wall of the threaded groove.

[0011] Preferably, the signal transmission component includes a fixing plate and a switch panel, the interior of the fixing plate is connected with a fourth screw, the interior of the fixing plate is connected with a push rod 1, one end of the push rod 1 is provided with a groove 1, the outer wall of the push rod 1 is slidably connected with a spring, the outer wall of the fourth screw is threadedly connected to the interior of the switch panel, and the top of the push rod 1 is connected to the bottom end of the moving iron needle.

[0012] Preferably, the mechanical motion component also includes a movable spring piece 1, the outer wall of the movable spring piece 1 is provided with a movable spring piece groove, the inner wall of the groove 1 is connected to the inner wall of the movable spring piece groove, the movable spring piece 1 is electrically connected to the sub-signal interface, the movable spring piece 1 is electrically connected to the main signal interface, and a connecting component is provided inside the fixed plate.

[0013] Preferably, the connecting assembly includes two movable spring pieces and two push rods, the outer wall of the two push rods 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 two push rods, one end of the two push rods is provided with a slot, the outer wall of the two movable spring pieces is provided with a boss, the outer wall of the boss is connected to the inner wall of the slot, and the top end of the two push rods is connected to the bottom end of the moving iron needle.

[0014] Preferably, the second dynamic spring piece is electrically connected to the sub-signal interface, and the second dynamic spring piece is electrically connected to the main signal interface.

[0015] Working principle: When the potential of the starting end of the copper wire is greater than that of the ending end of the copper wire, the iron needle cap on the moving iron needle in the middle of the coil column will be given S-pole magnetism, otherwise, the iron needle cap 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 installed in the forward direction on the first iron plate, and the other part of the second magnet is installed in the reverse direction 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 of the starting end of the copper wire is greater than that of the ending end of the copper wire, the S-pole magnetism of the iron needle cap will repel the first S-pole above and attract the second N-pole below, which will make the moving iron needle move downward, otherwise it will make the moving iron needle move upward. After power is cut off, the moving iron needle will lose its magnetism. Because the moving iron needle is made of iron and has the characteristic of being adsorbed by the first magnet, the moving iron needle will maintain its original state after power is cut off.

[0016] When the moving iron needle is pressed down, it will press the push rod and move the moving spring piece together, so that the main signal interface and the sub-signal interface can be connected. When the push rod moves up, the spring will push the push rod upward and move the moving spring piece upward, so that the main signal interface and the sub-signal interface can be disconnected.

[0017] As an improvement, the movable reed piece 1 has a boss and the push rod 2 has a slot. When the moving iron needle is pressed down, the push rod 2 will be pressed down, and at the same time, the movable reed piece 2 will be moved down, so that the main signal interface and the sub-signal interface can be connected. When the push rod 2 moves up, the spring will push the push rod 2 upward, and at the same time, the movable reed piece 2 will be moved up, so that the main signal interface and the sub-signal interface can be disconnected. The impedance continuity of the movable reed piece 2 is better, and the performance of the RF mechanical switch is better.

[0018] The present invention provides a radio frequency mechanical switch with a self-holding function. It has the following beneficial effects: 1. The present invention achieves stable maintenance of the state of the moving iron needle after power failure through a mechanism combining electromagnetic drive and permanent magnet adsorption. 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 the need for continuous power supply, thereby improving stability and reliability.

[0019] 2. The first magnet and the second magnet are installed in 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 magnetism of different polarities according to the direction of the current, and interact with the first magnet and the second magnet to make the moving iron needle move up or down, thereby achieving precise position control.

[0020] 3. In the present invention, the movable spring piece 1 has a boss and the push rod 2 has a slot. When the moving iron needle is pressed down, the push rod 2 is pressed down, and at the same time, the movable spring piece 2 is moved downward, so that the main signal interface and the sub-signal interface can be connected. When the push rod 2 moves upward, the spring will push the push rod 2 upward, and at the same time, the movable spring piece 2 moves upward, so that the main signal interface and the sub-signal interface can be disconnected. The impedance continuity of the movable spring piece 2 is better, and the performance of the radio frequency mechanical switch is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the present invention; Figure 2 It is a schematic diagram of the partial structure of the switch assembly of the present invention; Figure 3 It is a bottom view schematic diagram of the present invention; Figure 4 is an exploded schematic diagram of the switch assembly of the present invention; Figure 5 is an overall schematic diagram of the switch assembly of the present invention; Figure 6 It is an internal overall schematic diagram of the present invention; Figure 7 It is a schematic diagram of the structure of the moving iron needle of the present invention; Figure 8 This is a schematic diagram of the partial structure of the second baffle column of the present invention; Figure 9 This is a schematic diagram of the partial structure of the coil post of the present invention; Figure 10 It is a schematic diagram of the partial structure of the first magnet of the present invention; Figure 11 This is a schematic diagram of the motion state of the switch assembly of the present invention; Figure 12 This is a schematic diagram of the moving iron needle pressing down of the present invention; Figure 13This is a schematic diagram of the upward movement of the moving iron needle of the present invention; Figure 14 Schematic diagram of an explosion of the signal interface assembly of the present invention; Figure 15 It is a partial structural diagram of a push rod of the present invention; Figure 16 It is a schematic diagram of the local structure of the fixing plate of the present invention; Figure 17 It is a schematic cross-sectional view of the whole of the present invention; Figure 18 It is a schematic diagram of the partial structure of the push rod of the present invention.

[0022] Among them, 1. output interface; 2. cover; 3. switch assembly; 31. mechanical movement assembly; 3101. first screw; 3102. PCB board; 3103. first stopper; 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 stopper 1; 3113. plastic stopper 2; 3114. stopper; 3115. second iron plate; 3116. coil post; 3117. second stopper; 3118. metal plate; 3119. second screw; 312 0. Third screw; 3121. Bottom plate; 3122. Moving iron needle; 3123. Iron needle cap; 3124. Iron needle column; 3125. Iron needle head; 3126. End of copper wire; 3127. Starting end of copper wire; 3129. Threaded groove; 32. Signal transmission component; 3201. Fourth screw; 3202. Push rod 1; 3203. Fixed plate; 3204. Spring; 3205. Moving reed 1; 3206. Switch panel; 3207. Groove 1; 3208. Moving reed groove; 4. Signal interface component; 41. Main signal interface; 42. Sub-signal interface; 5. Moving reed 2; 51. Boss; 52. Slot; 6. Push rod 2. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0024] Please see the attached Figure 1 - Attachment Figure 18An embodiment of the present invention provides a radio frequency mechanical switch with a self-holding function, including an output interface 1, a cover 2, a switch component 3 and a signal interface component 4. The output interface 1 is arranged at the top of the cover 2, the switch component 3 is arranged inside the cover 2, and the signal interface component 4 is arranged at the bottom of the switch component 3. The signal interface component 4 is provided with a main signal interface 41 and a branch signal interface 42. The switch component 3 includes a mechanical motion component 31 and a signal transmission component 32.

[0025] Specifically, the cover 2 mainly plays a protective role, which can prevent the internal mechanical motion component 31 and signal transmission component 32 from being affected by the external environment. At the same time, it can also play a certain electromagnetic shielding role, reduce the interference of internal electromagnetic signals on the external environment, and prevent external electromagnetic interference from affecting the signal transmission inside the switch. The output interface 1 is the port for connecting the switch to the external device, which is used to output the signal after the switch is switched to the subsequent circuit or device, realize the external transmission of the signal, and play the role of outputting the signal in the entire signal transmission system. The mechanical motion component 31 is the core component of the switch's self-holding function and motion control, and is used to realize the self-holding function. The signal transmission component 32 is responsible for realizing the conduction and disconnection of the signal.

[0026] The mechanical motion assembly 31 includes a PCB board 3102, the interior of the PCB board 3102 is connected to a first screw 3101, the outer wall of the first screw 3101 is connected to a baffle 3114, the outer wall of the first screw 3101 is connected to a first iron plate 3104, the outer wall of the first screw 3101 is connected to a second iron plate 3115, the outer wall of the first screw 3101 is connected to a metal plate 3118, and the outer wall of the first screw 3101 is threadedly connected to a nut 3105; the outer wall of the first screw 3101 is connected to a first stopper 3103, the top end of the first stopper 3103 is connected to the bottom end of the PCB board 3102, and the bottom end of the first stopper 3103 is connected to the first stopper 3103. The top of the iron plate 3104 is connected to the outer wall of the first screw 3101 with a plastic stop column 2 3113, the top of the plastic stop column 2 3113 is connected to the bottom end of the second iron plate 3115, the bottom end of the plastic stop column 2 3113 is connected to the top of the metal plate 3118, the outer wall of the first screw 3101 is connected to a plastic stop column 1 3112, the top of the plastic stop column 1 3112 is connected to the bottom end of the baffle 3114, and the bottom end of the plastic stop column 1 3112 is connected to the top of the second iron plate 3115; the bottom end of the first iron plate 3104 is provided with a first magnet 3106, the upper part of the first magnet 3106 is a first N pole 3108, and the lower part of the first magnet 3106 is The first S pole 3109, the second iron plate 3115 is provided with a second magnet 3107 on the top, the lower part of the second magnet 3107 is a second N pole 3110, and the upper part of the second magnet 3107 is a 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 column 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, 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. The wire ends at the 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 of the moving iron needle 3122 is connected to the bottom end of the first magnet 3106; the mechanical motion component 31 also includes a base plate 3121, the interior of the base plate 3121 is connected to the third screw 3120, the top of the base plate 3121 is provided with a second stop column 3117, the inner wall of the second stop column 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 the second screw 3119, and the outer wall of the second screw 3119 is threadedly connected to the inner wall of the threaded groove 3129.

[0027] Specifically, when the winding wire is extended from the coil column 3116, the copper wire is divided into two ends, namely the copper wire end 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 end 3126, the iron needle cap 3123 on the moving iron needle 3122 in the middle of the coil column 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 on the first iron plate 3104 in the forward direction, and the other part of the second magnet 3107 is mounted on the first iron plate 3104 in the reverse direction. The upper end is the second S pole 3111, and the lower end is the second N pole 3110. When the coil column 3116 is energized and 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 first S pole 3109 on the upper side and attract the second N pole 3110 on the lower side, causing the moving iron needle 3122 to move downward, and vice versa. After the power is turned off, the moving iron needle 3122 will lose its magnetism. Because the moving iron needle 3122 is made of iron and has the characteristic of being attracted by the first magnet, the moving iron needle 3122 will maintain its original state after the power is turned off. Through a mechanism combining electromagnetic drive and permanent magnet attraction, the moving pin 3122 maintains its position stably even after power is removed. When the coil post 3116 is energized, the current direction controls the moving pin 3122. After power is removed, the pin 3122, due to its iron material properties, is attracted to the first magnet 3106, maintaining its current position without the need for continuous power supply. This solves the power-off reset issue of traditional switches, saves energy, and simplifies control logic. Furthermore, in this design, two sets of magnets, first magnet 3106 and second magnet 3107, are positioned at different locations to create a specific magnetic field environment. When power is removed from the coil post 3116, the pin cap 3123 in the center of the coil post 3116 is imbued with different polarities depending on the current direction. This interacts with the first and second magnets 3106 and 3107, causing the pin 3122 to move upward or downward, achieving precise position control. After power is removed, the pin 3122, made of iron, is attracted to the surrounding magnets, maintaining its position stably. This self-holding function enables the switch to reliably maintain its current state without the need for continuous power supply, thereby improving stability and reliability.

[0028] The signal transmission component 32 includes a fixed plate 3203 and a switch panel 3206. The interior of the fixed plate 3203 is connected to a fourth screw 3201. The interior of the fixed plate 3203 is connected to a push rod 3202. One end of the push rod 3202 is provided with a groove 3207. The outer wall of the push rod 3202 is slidably connected to a spring 3204. The outer wall of the fourth screw 3201 is threadedly connected to the interior of the switch panel 3206. The top of the push rod 3202 is connected to the bottom end of the moving iron needle 3122. The mechanical movement component 31 also includes a moving reed 3205. The outer wall of the moving reed 3205 is provided with a moving reed groove 3208. The inner wall of the groove 3207 is connected to the inner wall of the moving reed groove 3208. The moving reed 3205 is electrically connected to the sub-signal interface 42, and the moving reed 3205 is electrically connected to the total signal interface 41. A connecting component is provided inside the fixed plate 3203.

[0029] Specifically, when the moving iron needle 3122 is pressed down, it will press the push rod 3202 downward, and at the same time, move the moving spring piece 3205 downward, so that the total signal interface 41 and the sub-signal interface 42 are connected; when the push rod 3202 is moved up, the spring 3204 will push the push rod 3202 upward, and at the same time, move the moving spring piece 3205 upward, so that the total signal interface 41 and the sub-signal interface 42 are disconnected. Example 2

[0030] Please see the attached Figure 14 - Attachment Figure 18 The connecting component includes a movable spring piece 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. A slot 52 is provided at one end of the push rod 2 6. The outer wall of the movable spring piece 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 of the push rod 2 6 is connected to the bottom end of the moving iron needle 3122. The movable spring piece 2 5 is electrically connected to the sub-signal interface 42, and the movable spring piece 2 5 is electrically connected to the total signal interface 41.

[0031] Specifically, as an improvement, the movable reed piece 1 3205 has a boss 51, and the push rod 2 6 has a slot 52. When the moving iron needle 3122 is pressed down, the push rod 2 6 will be pressed down, and at the same time, the movable reed piece 2 5 will be moved down, so that the total signal interface 41 and the sub-signal interface 42 can be connected. When the push rod 2 6 moves up, the spring 3204 will push the push rod 2 6 upward, and at the same time drive the movable reed piece 2 5 to move up, so that the total signal interface 41 and the sub-signal interface 42 can be disconnected. The impedance continuity of the movable reed piece 2 5 is better, and the performance of the RF mechanical switch is better.

[0032] 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 component (3) and a signal interface component (4), characterized in that: The output interface (1) is arranged at the top end of the housing (2), the switch assembly (3) is arranged inside the housing (2), the signal interface assembly (4) is arranged at the bottom end of the switch assembly (3), the signal interface assembly (4) is provided with a total signal interface (41) and a sub-signal interface (42), and the switch assembly (3) includes a mechanical movement assembly (31) and a signal transmission assembly (32).

2. The radio frequency mechanical switch with self-holding function according to claim 1, characterized in that: The mechanical motion component (31) comprises a PCB board (3102), the interior of the PCB board (3102) is connected to a first screw (3101), the outer wall of the first screw (3101) is connected to a baffle (3114), the outer wall of the first screw (3101) is connected to a first iron plate (3104), the outer wall of the first screw (3101) is connected to a second iron plate (3115), the outer wall of the first screw (3101) is connected to a metal plate (3118), and the outer wall of the first screw (3101) is threadedly connected to a nut (3105).

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

4. The radio frequency mechanical switch with self-holding function according to claim 3, characterized in that: A first magnet (3106) is provided at the bottom end of the first iron plate (3104), the upper part of the first magnet (3106) is a first N pole (3108), and the lower part of the first magnet (3106) is a first S pole (3109); a second magnet (3107) is provided at the top end of the second iron plate (3115), the lower part of the second magnet (3107) is a second N pole (3110), and the upper part of the second magnet (3107) is a second S pole (3111).

5. The radio frequency mechanical switch with self-holding function according to claim 2, characterized in that: The mechanical motion component (31) further includes a moving iron needle (3122), the moving iron needle (3122) including an iron needle column (3124), an iron needle cap (3123), and an iron needle head (3125), the bottom end of the iron needle cap (3123) being fixedly connected to the bottom end of the iron needle column (3124), the bottom end of the iron needle column (3124) being fixedly connected to the iron needle head (3125), the outer wall of the moving iron needle (3122) being connected to a coil column (3116), the coil column (3116) being provided with a copper wire starting end (3127) and a copper wire ending end (3126), the outer wall of the moving iron needle (3122) being connected to the inner wall of the second magnet (3107), and the top end of the moving iron needle (3122) being connected to the bottom end of the first magnet (3106).

6. The radio frequency mechanical switch with self-holding function according to claim 5, characterized in that: The mechanical motion assembly (31) further includes a base plate (3121), the interior of the base plate (3121) being connected to a third screw (3120), a top end of the base plate (3121) being provided with a second stop column (3117), an inner wall of the second stop column (3117) being provided with a threaded groove (3129), an outer wall of the third screw (3120) being threadedly connected to the inner wall of the threaded groove (3129), a second screw (3119) being threadedly connected to the inner wall of the threaded groove (3129), an inner wall of the metal plate (3118) being connected to the second screw (3119), and an outer wall of the second screw (3119) being threadedly connected to the inner wall of the threaded groove (3129).

7. The radio frequency mechanical switch with 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), the fixing plate (3203) is internally connected to a fourth screw (3201), the fixing plate (3203) is internally connected to a push rod (3202), one end of the push rod (3202) is provided with a groove (3207), the outer wall of the push rod (3202) is slidably connected to a spring (3204), the outer wall of the fourth screw (3201) is threadedly connected to the inside of the switch panel (3206), and the top end of the push rod (3202) is connected to the bottom end of the moving iron needle (3122).

8. The radio frequency mechanical switch with self-holding function according to claim 7, characterized in that: The mechanical motion component (31) further comprises a movable spring piece 1 (3205), the outer wall of the movable spring piece 1 (3205) is provided with a movable spring piece groove (3208), the inner wall of the groove 1 (3207) is connected to the inner wall of the movable spring piece groove (3208), the movable spring piece 1 (3205) is electrically connected to the sub-signal interface (42), the movable spring piece 1 (3205) is electrically connected to the main signal interface (41), and a connecting component is provided inside the fixed plate (3203).

9. The radio frequency mechanical switch with self-holding function according to claim 8, characterized in that: The connecting assembly comprises a second movable spring piece (5) and a second push rod (6), the outer wall of the second 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 second push rod (6), one end of the second push rod (6) is provided with a slot (52), the outer wall of the second movable spring piece (5) is provided with a boss (51), the outer wall of the boss (51) is connected to the inner wall of the slot (52), and the top end of the second push rod (6) is connected to the bottom end of the moving iron needle (3122).

10. The radio frequency mechanical switch with self-holding function according to claim 9, characterized in that: The second dynamic spring piece (5) is electrically connected to the sub-signal interface (42), and the second dynamic spring piece (5) is electrically connected to the main signal interface (41).

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