Push rod assembly and coaxial radio frequency switch

Abstract

The application provides a push rod assembly and a coaxial radio frequency switch, and belongs to the technical field of coaxial switches. The push rod assembly comprises a barrel shell, an electromagnet, a magnet piece, a push-up assembly and a first spring. The electromagnet is installed at the top end inside the barrel shell, and the magnet piece is located below the electromagnet and repels the electrified electromagnet. The pressing rod is fixed at the bottom of the magnet piece, the push rod penetrates through the bottom of the barrel shell, the limiting block is arranged at the top end of the push rod, the second spring is sleeved outside the push rod between the limiting block and the inner bottom wall of the barrel shell, and the first spring is located outside the limiting block and the second spring and is arranged between the magnet piece and the inner bottom wall of the barrel shell. The first spring is compressed to play a role in later resetting, the second spring outside the push rod plays a buffering role, reduces the instantaneous contact force between the bottom end of the push rod and the conductive spring claw, has a certain buffering protection effect on the elasticity of the conductive spring claw, and also assists the resetting of the magnet piece when the power is off.

Description

Technical Field

[0001] This application relates to the field of coaxial switch technology, and more specifically, to a push rod assembly and a coaxial radio frequency switch. Background Technology

[0002] In a coaxial RF switch, the push rod in the push rod assembly, when subjected to the reciprocating force of an electromagnet, is subject to significant impact, which can easily reduce the elasticity of the internal conductive spring. For example, the publication document CN222381623U discloses a coaxial RF switch including a housing. Several female connectors are disposed on the exterior of the housing, with one end of each connector extending into the housing to form a main contact point and distributed contacts. Conductive springs are disposed inside the housing and connected to the main contact points.

[0003] When the push rod in the aforementioned coaxial RF switch reciprocates with the spring claw at the edge of the spring substrate, it is easy to cause deformation of the elastic substrate, which in turn causes the spring claw in the spring substrate to have poor recovery performance. In severe cases, it may even lose its elasticity, resulting in damage to the direct circuit of the switch and rendering it unusable. Utility Model Content

[0004] To overcome the above deficiencies, this application provides a push rod assembly and a coaxial RF switch, which aims to improve the problem that when the push rod in the coaxial RF switch reciprocates with the spring claw at the edge of the spring substrate, the elastic substrate is easily deformed, resulting in poor recovery performance of the spring claw in the spring substrate and affecting the performance of the switch.

[0005] This application provides a push rod assembly, including a cylindrical shell, an electromagnet, a magnet, a push assembly, and a first spring.

[0006] The electromagnet is installed inside the top of the cylindrical shell, and the magnet is located below the electromagnet and repulses the electromagnet after it is energized. The push assembly includes a push rod, a pressure rod, a second spring, and a limiting block. The pressure rod is fixed to the bottom of the magnet. The push rod slides through the bottom of the cylinder. The limiting block is located at the top of the push rod. The second spring is sleeved on the outside of the push rod between the limiting block and the inner bottom wall of the cylinder. The first spring is located outside the limiting block and the second spring, and is located between the magnet and the inner bottom wall of the cylinder.

[0007] In one specific implementation, the cylindrical shell includes an outer shell and a bottom cover plate, the bottom cover plate is fixed to the bottom of the outer shell, the push rod slides through the bottom cover plate, and the electromagnet and the magnet are both located inside the outer shell.

[0008] In one specific implementation, the inner wall of the outer shell is provided with a guide groove, and the outer wall of the magnet is provided with rolling balls that cooperate with the rolling of the guide groove.

[0009] In one specific embodiment, the magnet includes an outer shell and a magnet block, the magnet block being fixedly embedded inside the outer shell.

[0010] In one specific implementation, the outer wall of the outer casing is provided with an arc-shaped groove that mates with the ball bearing.

[0011] In one specific implementation, a clearance groove is provided in the middle of the upper surface of the bottom cover plate, and the lower end of the second spring is inserted into the clearance groove.

[0012] In one specific implementation, the bottom of the pressure rod is a hemispherical structure, and the upper surface of the limiting block is provided with a hemispherical groove that matches the bottom end of the pressure rod.

[0013] In one specific implementation, an elastic pad is provided in the hemispherical groove at the top of the limiting block.

[0014] This application also provides a coaxial radio frequency switch, including the push rod assembly described above.

[0015] Beneficial Effects: This application provides a push rod assembly and a coaxial radio frequency switch. When the electromagnet is energized, it will repel and press the magnet downwards, compressing the first spring. Simultaneously, it will cause the pressure rod to impact the limiting block, compressing the second spring, causing the push rod to move downwards and contact the conductive spring. The compression of the first spring serves as a later reset function, while the second spring outside the push rod acts as a buffer, reducing the instantaneous contact force between the bottom end of the push rod and the conductive spring, providing some buffer protection for the elasticity of the conductive spring, and also assisting in the reset of the magnet when the power is off. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the push rod assembly structure provided in the embodiments of this application; Figure 2 A schematic diagram of the internal structure of the push rod assembly provided in the embodiments of this application; Figure 3 A schematic diagram of the magnet structure provided for an embodiment of this application; Figure 4 A schematic diagram of the pusher assembly structure provided for an embodiment of this application.

[0018] In the diagram: 1. Cylinder shell; 11. Outer shell; 12. Bottom cover plate; 13. Guide groove; 14. Ball bearing; 15. Clearance groove; 2. Electromagnet; 3. Magnetic component; 31. Outer protective shell; 32. Magnetic block; 33. Arc groove; 4. Pushing assembly; 41. Push rod; 42. Pressure rod; 43. Second spring; 44. Limiting block; 45. Elastic pad; 5. First spring. Detailed Implementation

[0019] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0020] Please see Figures 1-4 This application provides a push rod assembly, including a cylindrical shell 1, an electromagnet 2, a magnet 3, a push assembly 4, and a first spring 5.

[0021] Electromagnet 2 is installed at the top inside the cylindrical shell 1, and magnet 3 is located below electromagnet 2, engaging with it in a repulsive manner when energized. The pushing assembly 4 includes a push rod 41, a pressure rod 42, a second spring 43, and a limiting block 44. The pressure rod 42 is fixed to the bottom of magnet 3, the push rod 41 slides through the bottom of the cylindrical shell 1, the limiting block 44 is located at the top of the push rod 41, the second spring 43 is sleeved on the outside of the push rod 41 between the limiting block 44 and the inner bottom wall of the cylindrical shell 1, and a first spring 5 is located outside the limiting block 44 and the second spring 43, positioned between magnet 3 and the inner bottom wall of the cylindrical shell 1.

[0022] When the electromagnet 2 in the push rod assembly is energized, it repels and presses the magnet 3 downwards. Simultaneously, the bottom of the magnet 3 moves downwards, compressing the first spring 5. At the same time, the pressure rod 42 impacts the limiting block 44, compressing the second spring 43, causing the push rod 41 to move downwards and contact the conductive spring claw. The compression of the first spring 5 serves as a later reset function, while the second spring 43 outside the push rod 41 acts as a buffer, reducing the instantaneous contact force between the bottom of the push rod 41 and the conductive spring claw. This provides some buffering protection for the elasticity of the conductive spring claw and also assists in the reset of the magnet 3 when the power is off.

[0023] In a specific configuration, the cylindrical shell 1 includes an outer shell 11 and a bottom cover plate 12. The bottom cover plate 12 is fixed to the bottom of the outer shell 11, and the push rod 41 slides through the bottom cover plate 12. The electromagnet 2 and the magnet 3 are both located inside the outer shell 11. The outer shell 11 and the bottom cover plate 12 can be fixed together by welding.

[0024] Specifically, the inner wall of the outer casing 11 is provided with a guide groove 13, and the outer wall of the magnet 3 is provided with a rolling ball 14 that rolls in conjunction with the guide groove 13. The arrangement of the guide groove 13 and the rolling ball 14 makes the pushing assembly 4 move more smoothly and stably in the vertical direction.

[0025] Furthermore, the magnet component 3 includes an outer shell 31 and a magnet block 32, with the magnet block 32 fixedly embedded inside the outer shell 31. The outer wall of the outer shell 31 is provided with an arc-shaped groove 33 that mates with the ball 14, and the ball 14 rolls between the arc-shaped groove 33 and the guide groove 13.

[0026] In the above specific embodiment, a relief groove 15 is provided in the middle of the upper surface of the bottom cover plate 12, and the lower end of the second spring 43 is inserted into the relief groove 15. The relief groove 15 is used to limit the installation of the lower end of the second spring 43.

[0027] In its specific design, the bottom of the pressure rod 42 has a hemispherical structure, and the upper surface of the limiting block 44 has a hemispherical groove that mates with the bottom of the pressure rod 42. An elastic pad 45 is provided in the hemispherical groove at the top of the limiting block 44. The hemispherical structure at the bottom of the pressure rod 42 serves as a guide, and the elastic pad 45 provides a cushioning effect.

[0028] It should be noted that the specific model and specifications of electromagnet 2 need to be determined based on the actual specifications of the device. The specific selection and calculation method adopts existing technology in this field, and therefore will not be described in detail. The power supply and principle of electromagnet 2 are clear to those skilled in the art, and will not be described in detail here.

[0029] This application also provides a coaxial radio frequency switch, including the aforementioned push rod assembly. That is, the push rod assembly of this application is applicable to any coaxial radio frequency switch conforming to this design.

[0030] The working principle of the push rod assembly and coaxial RF switch is as follows: When the electromagnet 2 in the push rod assembly is energized, it will repel the magnet 3 and press the magnet 3 downward. At the same time, the bottom of the magnet 3 moves downward to compress the first spring 5, and simultaneously drives the pressure rod 42 to impact the limiting block 44 to compress the second spring 43, causing the push rod 41 to move downward and contact the conductive spring claw. Among them, the compression of the first spring 5 plays a role in the later reset, and the second spring 43 outside the push rod 41 plays a buffering role, reducing the instantaneous contact force between the bottom end of the push rod 41 and the conductive spring claw, and has a certain buffering protection effect on the elasticity of the conductive spring claw. It also assists in the reset of the magnet 3 when the power is off.

[0031] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A push rod assembly, characterized in that, include The cylindrical shell (1), electromagnet (2) and magnet (3) are provided. The electromagnet (2) is installed at the top inside the cylindrical shell (1), and the magnet (3) is located below the electromagnet (2) and repulses the electromagnet (2) after it is energized. The push assembly (4) and the first spring (5) are provided. The push assembly (4) includes a push rod (41), a pressure rod (42), a second spring (43) and a limiting block (44). The pressure rod (42) is fixed to the bottom of the magnet (3). The push rod (41) slides through the bottom of the cylinder (1). The limiting block (44) is set at the top of the push rod (41). The second spring (43) is sleeved on the outside of the push rod (41) between the limiting block (44) and the inner bottom wall of the cylinder (1). The first spring (5) is located outside the limiting block (44) and the second spring (43) and is set between the magnet (3) and the inner bottom wall of the cylinder (1).

2. The push rod assembly according to claim 1, characterized in that, The cylindrical shell (1) includes an outer shell (11) and a bottom cover plate (12). The bottom cover plate (12) is fixed to the bottom of the outer shell (11). The push rod (41) slides through the bottom cover plate (12). The electromagnet (2) and the magnet (3) are both located inside the outer shell (11).

3. A push rod assembly according to claim 2, characterized in that, The inner wall of the outer shell (11) is provided with a guide groove (13), and the outer wall of the magnet (3) is provided with a ball (14) that rolls in cooperation with the guide groove (13).

4. A push rod assembly according to claim 3, characterized in that, The magnet (3) includes an outer shell (31) and a magnet block (32), the magnet block (32) being fixedly embedded inside the outer shell (31).

5. A push rod assembly according to claim 4, characterized in that, The outer wall of the outer shell (31) is provided with an arc-shaped groove (33) that cooperates with the ball (14).

6. A push rod assembly according to claim 2, characterized in that, A clearance groove (15) is provided in the middle of the upper surface of the bottom cover plate (12), and the lower end of the second spring (43) is inserted into the clearance groove (15).

7. A push rod assembly according to claim 1, characterized in that, The bottom of the pressure rod (42) is a hemispherical structure, and the upper surface of the limiting block (44) is provided with a hemispherical groove that matches the bottom end of the pressure rod (42).

8. A push rod assembly according to claim 7, characterized in that, An elastic pad (45) is provided in the hemispherical groove at the top of the limiting block (44).

9. A coaxial radio frequency switch, characterized in that, The push rod assembly includes any one of claims 1-8.

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