Plug-in replaceable radio module structure

Abstract

The application discloses a plug-in board replaceable radio frequency module structure and particularly relates to the technical field of test equipment, which comprises a radio frequency mainboard, a radio frequency module and a radio frequency test machine slot for radio frequency test, the radio frequency module is fixed outside the radio frequency mainboard, a floating cavity is formed on one side surface of the radio frequency module, a first bundled radio frequency interface is slidably connected inside the floating cavity, and a second bundled radio frequency interface is fixedly connected to one side of the inner wall of the radio frequency test machine slot. The application realizes quick replacement of the module, synchronous triggering of mechanical locking, electromagnetic adsorption and pneumatic interface compression through rotation of the operation handle, locking is formed, constant contact force of the radio frequency interface is maintained through pressure adjustment, the electric interface is preferentially separated to avoid electric arc damage when the lock is unlocked, a polytetrafluoroethylene coating reduces signal interference and mechanical wear, and finally, efficient replacement of the test module, connection reliability against vibration and impact, and significant improvement of the measurement accuracy and stability of the radio frequency test system are achieved.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and more specifically, to a plug-in replaceable radio frequency module structure. Background Technology

[0002] In the field of radio frequency (RF) testing, with the deepening of 5G commercialization, the acceleration of 6G technology research and development, and the widespread application of millimeter-wave frequency bands, the RF testing field is undergoing unprecedented technological changes. The explosive expansion of application scenarios has further intensified the performance challenges to test equipment. With the development of technology and the diversification of application scenarios, higher requirements are placed on the flexibility and accuracy of test equipment.

[0003] The RF modules of existing RF testers are usually fixed. When different tests are required on the same device under test, users have to remove the device under test from the current tester and connect it to another tester because different test items require different RF functions. This operation is cumbersome and time-consuming, which seriously affects the test efficiency. At the same time, the single mechanical locking method of the test module is prone to micron-level gaps in vibration environment, causing measurement errors and making it difficult to guarantee test stability and accuracy. In addition, the traditional method of fixing with bolts has low replacement efficiency and is difficult to adapt to scenarios where test equipment is replaced frequently. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a plug-in replaceable radio frequency module structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a plug-in replaceable RF module structure, including an RF motherboard for RF testing, an RF module, and an RF tester slot. The RF module is fixed to the outside of the RF motherboard. A floating cavity is formed on one side surface of the RF module. A first clustered RF interface is slidably connected inside the floating cavity. A second clustered RF interface is fixedly connected to one side of the inner wall of the RF tester slot. The first clustered RF interface and the second clustered RF interface constitute an RF signal measurement path. A replacement locking mechanism is provided between the RF motherboard and the RF module to enhance test stability during connection.

[0006] The replacement locking mechanism includes an eccentric bump storage slot, which is located on the top surface of the RF motherboard. A rotating shaft is rotatably connected inside the eccentric bump storage slot, and an eccentric bump is fixedly connected to the outside of the rotating shaft. An inner cavity is provided inside the RF module. One side of the rotating shaft passes through the inner cavity and extends to one side of the RF module. Two fixed baffles are sleeved on the outside of the rotating shaft. Both fixed baffles are fixed to the bottom of the inner wall of the inner cavity. A reset torsion spring is fixedly connected between the two fixed baffles. The reset torsion spring is sleeved on the outside of the rotating shaft. An operating handle is fixedly connected to one end of the rotating shaft. A locking groove for locking with the eccentric bump is provided on the top surface of the inner wall of the RF tester slot.

[0007] The outer side of the rotating shaft is sequentially fitted with a first sector-shaped cam plate and a second sector-shaped cam plate. A first micro switch and a second micro switch are fixedly installed on one side of the inner wall of the inner cavity. Radio frequency module end plates are fixedly embedded on both sides of the radio frequency module. Multiple electromagnetic coils that generate magnetic fields are fixedly installed inside the radio frequency module end plates. The first micro switch is electrically connected to the electromagnetic coil. Low-carbon steel suction plates for generating attraction force by the electromagnetic coils are fixedly embedded on both sides of the inner wall of the radio frequency tester slot. A floating mechanism is provided between the floating cavity and the first clustered radio frequency interface to form a test signal path with constant contact force. A positioning mechanism is provided between the radio frequency module and the radio frequency tester slot to ensure the docking accuracy of the radio frequency interface.

[0008] Preferably, the floating mechanism includes a floating seat, which is fixed to one end of the first clustered radio frequency interface. A movable piston is fixedly connected to one side of the floating seat. Both the floating seat and the movable piston are slidably connected to the inner wall of the floating cavity. An air inlet pipe is fixedly connected to one side of the inner wall of the floating cavity.

[0009] Preferably, an air pump is fixedly connected to the bottom of the air intake pipe, the air pump is fixed to the bottom of the radio frequency module, an exhaust pipe is fixedly connected to the bottom of the inner wall of the floating cavity, and an electromagnetic valve is fixedly installed inside the exhaust pipe.

[0010] Preferably, the trigger signal of the second micro switch controls the linkage operation of the air pump and the solenoid valve:

[0011] In the triggered state, the air pump is powered on and the solenoid valve is de-energized and closed, causing the air pressure in the floating chamber to increase;

[0012] In non-triggered mode, the air pump is de-energized and stops, and the solenoid valve is energized and opened, allowing the floating chamber to release pressure through the exhaust pipe.

[0013] Preferably, the first clustered RF interface and the second clustered RF interface are adapted to each other, and the RF module is slidably connected to the RF tester slot.

[0014] Preferably, the rotation trajectory of the first sector-shaped cam plate covers the triggering part of the first micro switch, which is used to control the electromagnetic coil to be energized and adsorb the low carbon steel suction plate to fix the test position of the radio frequency module. The rotation trajectory of the second sector-shaped cam plate covers the triggering part of the second micro switch, which is used to start the floating cavity inflation program to establish the test interface connection.

[0015] Preferably, the positioning mechanism includes two V-shaped guide grooves, which are formed on both sides of the inner wall of the RF tester slot. Guide protrusions are fixedly connected to both sides of the RF module. Fixed grooves are formed on both sides of the guide protrusions, and ball bearings are rotatably connected inside the fixed grooves.

[0016] Preferably, the cross-sectional shape of the guide ridge is set as an isosceles triangle, and the contact surfaces of the V-shaped guide groove and the ball bearing are both nitrided.

[0017] Preferably, a plurality of tapered positioning pins are fixedly connected to one side of the radio frequency module, and a plurality of tapered positioning holes are opened on one side surface of the inner wall of the radio frequency tester slot, and the tapered positioning pins are slidably connected to the tapered positioning holes.

[0018] Preferably, when the operating handle is rotated to the locked position, the eccentric protrusion engages with the locking groove, and the surface of the eccentric protrusion is provided with a polytetrafluoroethylene coating.

[0019] The technical effects and advantages of this invention are as follows:

[0020] 1. Through the rolling cooperation of V-shaped guide groove and guide convex strip, the ball bearing reduces frictional resistance. Combined with the automatic centering function of tapered positioning pin and positioning hole, the module insertion process does not require high-precision alignment. A single person can complete the operation, which greatly shortens the replacement time compared with the traditional fixed structure. Rotating the operating handle can simultaneously complete mechanical locking, electromagnetic assisted fixing and interface contact. The second sector cam plate starts the air pump to realize one-step operation and multi-action linkage, which greatly improves the locking and unlocking efficiency. Through the clustered RF interface and positioning structure, it can be compatible with RF modules of different test items. There is no need to adjust the test machine slot when replacing, which meets the rapid switching needs of multiple types of test equipment and improves the flexibility of the test system. When it is necessary to change the test items of the test equipment, the plug-in replaceable RF module structure can be removed and other plug-in replaceable RF module structures that meet the requirements can be inserted.

[0021] 2. The radial force is provided by locking through eccentric protrusions and locking grooves, and the axial preload is formed by the electromagnetic coil and low carbon steel suction plate. The floating mechanism adjusts the air pressure of the floating chamber through an air pump to maintain a constant contact force between the first and second clustered RF interfaces. Even if wear occurs after long-term use, reliable electrical connection can still be maintained through air pressure compensation, solving the signal jump problem caused by poor contact in traditional rigid interfaces. It can withstand a certain amount of vibration and shock, ensuring that the interface does not loosen during the test. Multiple locking enhances connection reliability. The rolling guidance of V-shaped guide groove and ball bearing limits lateral offset, and the conical surface of the tapered positioning pin enables fine adjustment in the final stage, ensuring that the coaxiality error of the clustered RF interface is extremely small, and guaranteeing high stability and measurement accuracy of RF testing.

[0022] 3. By releasing pressure through a floating cavity during unlocking, the first clustered RF interface separates from the mechanical structure before the mechanical structure, avoiding arcing during insertion and removal, improving the lifespan of the clustered interface, and prioritizing interface protection during electrical separation. The PTFE coating on the eccentric bump surface avoids interference with RF signals from metal contact, while also increasing locking friction and reducing mechanical wear. A reset torsion spring ensures automatic reset of the eccentric bump during unlocking. The solenoid valve automatically opens to release pressure when power is off, preventing forced damage caused by structural jamming, reducing equipment failure rate and maintenance frequency. The triggering logic of the fan-shaped cam and micro switch ensures precise action timing. Electromagnetic adsorption and interface contact are only initiated after mechanical locking is completed, avoiding forced operation in misaligned states and protecting the interface and module structure.

[0023] In summary, through the interaction of the above-mentioned multiple functions, rapid module replacement is achieved. Rotating the operating handle simultaneously triggers mechanical locking, electromagnetic adsorption, and pneumatic interface pressing, forming radial and axial coordinated locking. The air pressure regulation of the floating mechanism maintains a constant contact force for the RF interface, positioning ensures the coaxial accuracy of the interface, and pressure relief prioritizes separation of the electrical interface during unlocking to avoid arc damage. The PTFE coating reduces signal interference and mechanical wear. Ultimately, this achieves efficient replacement of test modules, vibration and shock resistant connection reliability, and long-life electrical interface protection, significantly improving the flexibility and measurement stability of the RF test system. It is suitable for high-precision RF test scenarios such as communication equipment and radar systems. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the radio frequency module of the present invention.

[0026] Figure 3 For the present invention Figure 2 Schematic diagram of cross-section structure.

[0027] Figure 4This is a schematic diagram of the external structure of the rotating shaft of the present invention.

[0028] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point A in the middle.

[0029] Figure 6 This is a schematic diagram of the structure of the guide protrusion of the present invention.

[0030] Figure 7 This is a cross-sectional view of the radio frequency module of the present invention.

[0031] Figure 8 This is a schematic diagram of the floating mechanism of the present invention.

[0032] The attached diagram is labeled as follows: 1. RF motherboard; 2. RF module; 3. RF tester slot; 4. Floating cavity; 5. First clustered RF interface; 6. Second clustered RF interface; 7. Eccentric protrusion storage slot; 8. Rotating shaft; 9. Eccentric protrusion; 10. Inner cavity; 11. Fixed baffle; 12. Reset torsion spring; 13. Operating handle; 14. First sector-shaped cam; 15. Second sector-shaped cam; 16. First micro switch; 17. Second micro switch; 18. RF module end plate; 19. Electromagnetic coil; 20. Low carbon steel suction plate; 21. Floating seat; 22. Moving piston; 23. Spring; 24. Air pump; 25. Inlet pipe; 26. Exhaust pipe; 27. Electromagnetic valve; 28. V-shaped guide groove; 29. ​​Guide protrusion; 30. Fixed groove; 31. Ball bearing; 32. Conical positioning pin; 33. Conical positioning hole; 34. Locking groove. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below 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.

[0034] As attached Figure 1-8 The replaceable RF module structure shown includes an RF motherboard 1 for RF testing, an RF module 2, and an RF tester slot 3. The RF module 2 is fixed to the outside of the RF motherboard 1. A floating cavity 4 is opened on one side surface of the RF module 2. A first clustered RF interface 5 is slidably connected inside the floating cavity 4. A second clustered RF interface 6 is fixedly connected to one side of the inner wall of the RF tester slot 3. The first clustered RF interface 5 and the second clustered RF interface 6 form an RF signal measurement path. A replacement locking mechanism is provided between the RF motherboard 1 and the RF module 2 to enhance test stability during connection.

[0035] The modular design of RF module 2 and RF motherboard 1, combined with RF tester slot 3, enables quick insertion and removal, solving the problem of cumbersome replacement of traditional fixed structures;

[0036] The replacement locking mechanism includes an eccentric protrusion receiving groove 7, which is opened on the top surface of the RF motherboard 1. A rotating shaft 8 is rotatably connected inside the eccentric protrusion receiving groove 7, and an eccentric protrusion 9 is fixedly connected to the outside of the rotating shaft 8. An inner cavity 10 is opened inside the RF module 2. One side of the rotating shaft 8 passes through the inner cavity 10 and extends to one side of the RF module 2. Two fixed baffles 11 are sleeved on the outside of the rotating shaft 8. Both fixed baffles 11 are fixed to the bottom of the inner wall of the inner cavity 10. A reset torsion spring 12 is fixedly connected between the two fixed baffles 11. The reset torsion spring 12 is sleeved on the outside of the rotating shaft 8. An operating handle 13 is fixedly connected to one end of the rotating shaft 8. A locking groove 34 for locking with the eccentric protrusion 9 is opened on the top surface of the inner wall of the RF tester slot 3.

[0037] The engagement of the eccentric protrusion 9 and the locking groove 34 generates radial locking force, ensuring that the RF module 2 and the RF tester slot 3 are rigidly fixed. The linkage design of the rotating shaft 8 and the operating handle 13 enables locking to be completed in one step. The reset torsion spring 12 automatically drives the rotating shaft 8 to reset when unlocking, avoiding structural jamming and reducing maintenance costs. The hidden design of the eccentric protrusion storage groove 7 and the inner cavity 10 reduces the interference of the external environment on the core components.

[0038] A first sector-shaped cam plate 14 and a second sector-shaped cam plate 15 are fixedly sleeved on the outer side of the rotating shaft 8. A first micro switch 16 and a second micro switch 17 are fixedly installed on one side of the inner wall of the inner cavity 10. Radio frequency module end plates 18 are fixedly embedded on both sides of the radio frequency module 2. Multiple electromagnetic coils 19 that generate magnetic fields are fixedly installed inside the radio frequency module end plates 18. The first micro switch 16 is electrically connected to the electromagnetic coils 19. Low carbon steel suction plates 20 for generating attraction force of electromagnetic coils 19 are fixedly embedded on both sides of the inner wall of the radio frequency tester slot 3. A floating mechanism is set between the floating cavity 4 and the first clustered radio frequency interface 5 to form a test signal path with constant contact force. A positioning mechanism is set between the radio frequency module 2 and the radio frequency tester slot 3 to ensure the docking accuracy of the radio frequency interface.

[0039] The linkage between the first sector-shaped cam plate 14 and the first micro switch 16 can synchronously trigger the electromagnetic coil 19 to be energized after mechanical locking, forming an axial preload with the low-carbon steel suction plate 20, supplementing the gap of the radial locking force, and improving the vibration resistance. The cooperation between the second sector-shaped cam plate 15 and the second micro switch 17 realizes the timing control of the floating mechanism and mechanical locking, avoiding wear caused by premature contact of the interface. The RF module end plate 18 integrates the electromagnetic coil 19 to reduce the impact of electromagnetic interference on the RF signal.

[0040] As attached Figure 1 , 8 As shown, the floating mechanism includes a floating seat 21, which is fixed to one end of the first clustered radio frequency interface 5. A movable piston 22 is fixedly connected to one side of the floating seat 21. Both the floating seat 21 and the movable piston 22 are slidably connected to the inner wall of the floating cavity 4. An air inlet pipe 25 is fixedly connected to one side of the inner wall of the floating cavity 4.

[0041] The sliding engagement between the floating seat 21 and the moving piston 22 allows the first clustered radio frequency interface 5 to float along the axial direction of the floating cavity 4, compensating for contact gaps caused by wear or temperature changes. The air inlet pipe 25 provides an air pressure regulation channel for the floating cavity 4, and the contact force is controlled by air pressure to solve the problem of poor contact of traditional rigid interfaces.

[0042] As attached Figure 1 , 8 As shown, an air pump 24 is fixedly connected to the bottom of the air intake pipe 25. The air pump 24 is fixed to the bottom of the radio frequency module 2. An exhaust pipe 26 is fixedly connected to the bottom of the inner wall of the floating cavity 4. An electromagnetic valve 27 is fixedly installed inside the exhaust pipe 26.

[0043] The air pump 24, in conjunction with the air inlet pipe 25, can quickly adjust the air pressure inside the floating chamber 4 to adapt to the contact force requirements of different test scenarios. The exhaust pipe 26 and the solenoid valve 27 enable rapid pressure relief, ensuring timely separation of the interface during unlocking to avoid arc erosion. The air pump 24 is integrated into the bottom of the RF module 2, eliminating the need for an external air source and improving the portability of the device.

[0044] As attached Figure 5 , 8 As shown, the trigger signal of the second micro switch 17 controls the linkage operation of the air pump 24 and the solenoid valve 27:

[0045] In the triggered state, the air pump 24 is powered on and the solenoid valve 27 is de-energized and closed, and the air pressure in the floating chamber 4 increases.

[0046] In the non-triggered state, the air pump 24 is de-energized and stops, and the solenoid valve 27 is energized and opened, and the floating chamber 4 is depressurized through the exhaust pipe 26;

[0047] The linkage control of the second micro switch 17 ensures the timing of the air inlet after mechanical locking, avoids forced contact when the interface is misaligned, makes the interface contact and separation actions precise and controllable, and extends the life of the cluster interface.

[0048] As attached Figure 1 , 2 As shown in Figures 3, 7, and 8, the first clustered RF interface 5 and the second clustered RF interface 6 are adapted to each other, and the RF module 2 and the RF tester slot 3 are slidably connected.

[0049] The sliding connection between the RF module 2 and the RF tester slot 3, along with the positioning mechanism, allows for insertion and removal by a single person, greatly shortening the replacement time.

[0050] As attached Figure 1 , 3 As shown in Figures 4, 5, and 7, the rotation trajectory of the first sector-shaped cam plate 14 covers the triggering part of the first micro switch 16, which is used to control the electromagnetic coil 19 to be energized and adsorb the low carbon steel suction plate 20, thereby fixing the test position of the radio frequency module 2. The rotation trajectory of the second sector-shaped cam plate 15 covers the triggering part of the second micro switch 17, which is used to start the inflation program of the floating cavity 4 to establish the test interface connection.

[0051] The rotation trajectory design of the first sector cam plate 14 and the second sector cam plate 15 ensures the reliability of the micro switch triggering and avoids misoperation. The electromagnetic adsorption controlled by the first sector cam plate 14 and the inflation program initiated by the second sector cam plate 15 form a triple fixation of mechanical, electromagnetic and pneumatic, which significantly improves the stability of the test.

[0052] As attached Figure 1 , 2 As shown in Figures 3 and 6, the positioning mechanism includes two V-shaped guide grooves 28. The V-shaped guide grooves 28 are opened on both sides of the inner wall of the slot 3 of the RF tester. Guide protrusions 29 are fixedly connected to both sides of the RF module 2. Fixing grooves 30 are opened on both sides of the guide protrusions 29. Ball bearings 31 are rotatably connected inside the fixing grooves 30.

[0053] The V-shaped guide groove 28 and the guide protrusion 29 work together to limit the lateral offset of the RF module 2 and ensure interface alignment accuracy. The ball bearing 31 converts sliding friction into rolling friction, reducing insertion resistance and making it suitable for high-frequency insertion and removal scenarios.

[0054] As attached Figure 1 , 2 As shown in Figures 3 and 6, the cross-sectional shape of the guide rib 29 is set as an isosceles triangle. The contact surfaces of the V-shaped guide groove 28 and the ball bearing 31 are both nitrided. The cooperation between the isosceles triangular guide rib 29 and the V-shaped guide groove 28 has an automatic centering function, reducing the difficulty of manual alignment. The nitriding treatment of the contact surfaces improves wear resistance and maintains guiding accuracy.

[0055] As attached Figure 1 , 2 As shown in Figures 3, 7, and 8, multiple conical positioning pins 32 are fixedly connected to one side of the RF module 2. Multiple conical positioning holes 33 are opened on one side of the inner wall of the RF tester slot 3. The conical positioning pins 32 and the conical positioning holes 33 are slidably connected. The conical surfaces of the conical positioning pins 32 and the conical positioning holes 33 cooperate to achieve micro-adjustment at the end of the insertion, ensuring accurate docking of the cluster interface. The design of multiple sets of positioning pin holes further improves the positioning reliability and adapts to the thermal expansion differences under wide temperature environments.

[0056] As attached Figure 1 , 2 As shown in Figures 3, 4, and 7, when the operating handle 13 is rotated to the locked position, the eccentric protrusion 9 engages with the locking groove 34. The surface of the eccentric protrusion 9 is coated with polytetrafluoroethylene (PTFE). The PTFE coating reduces metal-to-metal contact interference between the eccentric protrusion 9 and the locking groove 34, reduces radio frequency signal insertion loss, and improves surface wear resistance and lubrication, making the locking and unlocking operations smoother and preventing structural jamming caused by rust.

[0057] The working principle of this invention: The replaceable RF module structure achieves rapid replacement and stable testing of the RF module 2 in the RF tester slot 3 through the coordinated design of mechanical locking, electromagnetic assisted fixing and floating interface. When the RF module 2 is inserted into the RF tester slot 3, the guide protrusions 29 on both sides of the module first enter the V-shaped guide groove 28 on the inner wall of the slot. The ball bearings 31 with wear resistance improved by nitriding treatment in the fixing grooves 30 on both sides of the protrusions roll into contact with the V-shaped guide groove 28, reducing the insertion resistance and limiting lateral displacement. At the end of the insertion, the tapered positioning pin 32 slides into the tapered positioning hole 33 on the inner wall of the slot. The remaining gap is eliminated by the tapered surface cooperation. The tapered surface guide achieves the final stage of fine adjustment, ensuring the RF interface docking accuracy and ensuring the axial alignment of the first clustered RF interface 5 and the second clustered RF interface 6.

[0058] After the module is fully inserted, the operator rotates the operating handle 13, which drives the rotating shaft 8 to rotate. The eccentric protrusion 9 on the outside of the shaft rotates out from the eccentric protrusion receiving groove 7 and engages with the locking groove 34 of the RF tester slot 3, generating a radial locking force to rigidly fix the RF module 2 to the RF tester slot 3. At this time, the reset torsion spring 12 on the outside of the rotating shaft 8 is twisted and stored to provide reset power for subsequent unlocking. The polytetrafluoroethylene coating on the surface of the eccentric protrusion 9 avoids interference of the RF signal by metal contact and at the same time increases the friction between the eccentric protrusion 9 and the locking groove 34. During the rotation of the rotating shaft 8, the first sector-shaped cam plate 14 on its outside rotates synchronously with the shaft. When the operating handle 13 reaches the locked position, the outer arc surface of the first sector-shaped cam plate 14 triggers the first micro switch 16, which energizes the electromagnetic coil 19 in the RF module end plate 18 to generate a magnetic field, forming an axial preload with the low carbon steel suction plate 20 on the inner wall of the RF tester slot 3, supplementing the gap of the mechanical lock, enhancing the connection stability, and thus ensuring the test effect.

[0059] Simultaneously, the second sector-shaped cam plate 15 on the rotating shaft 8 triggers the second micro switch 17, starts the air pump 24 and closes the solenoid valve 27 in the exhaust pipe 26. Compressed air enters the floating chamber 4 through the air inlet pipe 25, pushing the moving piston 22 and the floating seat 21 to move the first clustered RF interface 5 towards the slot, forming an interference fit with the second clustered RF interface 6, establishing a reliable RF signal measurement path. The RF signal is transmitted through the cooperation of the first clustered RF interface 5 and the second clustered RF interface 6. Mechanical locking and electromagnetic adsorption jointly suppress vibration interference. The floating mechanism compensates for contact wear through air pressure, ensuring stable signal transmission during the test.

[0060] The operator rotates the operating handle 13 in the opposite direction, the reset torsion spring 12 releases its stored energy, and drives the rotating shaft 8 to rotate counterclockwise. The eccentric protrusion 9 disengages from the locking groove 34 and retracts into the eccentric protrusion receiving groove 7, the mechanical lock is released, and when the rotating shaft 8 rotates, the first sector cam 14 disengages from the first micro switch 16, the electromagnetic coil 19 is de-energized, and the electromagnetic attraction force disappears; the second sector cam 15 disengages from the second micro switch 17, the air pump 24 stops working, the electromagnetic valve 27 is energized and opened, the floating chamber 4 is depressurized through the exhaust pipe 26, the first clustered RF interface 5 is reset under the action of the spring 23 and separates from the second clustered RF interface 6, realizing electrical separation before mechanical separation, avoiding arc erosion during plugging and unplugging, the RF module 2 is removed, and the test equipment remains unchanged, allowing for the replacement of the test module. When it is necessary to change the test items of the device under test, the plug-in replaceable RF module structure is removed and other suitable plug-in replaceable RF module structures are inserted.

[0061] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0062] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0063] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plug-in replaceable RF module structure, comprising an RF motherboard (1) for RF testing, an RF module (2), and an RF tester slot (3), characterized in that: The radio frequency module (2) is fixed on the outside of the radio frequency motherboard (1). A floating cavity (4) is opened on one side surface of the radio frequency module (2). A first clustered radio frequency interface (5) is slidably connected inside the floating cavity (4). A second clustered radio frequency interface (6) is fixedly connected to one side of the inner wall of the radio frequency tester slot (3). The first clustered radio frequency interface (5) and the second clustered radio frequency interface (6) constitute a radio frequency signal measurement path. A replacement locking mechanism is provided between the radio frequency motherboard (1) and the radio frequency module (2) to enhance test stability during connection. The replacement locking mechanism includes an eccentric protrusion storage groove (7), which is located on the top surface of the RF motherboard (1). A rotating shaft (8) is rotatably connected inside the eccentric protrusion storage groove (7). An eccentric protrusion (9) is fixedly connected to the outside of the rotating shaft (8). An inner cavity (10) is provided inside the RF module (2). One side of the rotating shaft (8) passes through the inner cavity (10) and extends to the side of the RF module (2). Two fixed baffles (11) are sleeved on the outside of the rotating shaft (8). Both fixed baffles (11) are fixed to the bottom of the inner wall of the inner cavity (10). A reset torsion spring (12) is fixedly connected between the two fixed baffles (11). The reset torsion spring (12) is sleeved on the outside of the rotating shaft (8). An operating handle (13) is fixedly connected to one end of the rotating shaft (8). A locking groove (34) for locking with the eccentric protrusion (9) is provided on the top surface of the inner wall of the RF tester slot (3). The first sector-shaped cam plate (14) and the second sector-shaped cam plate (15) are fixedly sleeved on the outer side of the rotating shaft (8). The first micro switch (16) and the second micro switch (17) are fixedly installed on one side of the inner wall of the inner cavity (10). The radio frequency module (2) has radio frequency module end plates (18) fixedly embedded on both sides. The radio frequency module end plates (18) have multiple electromagnetic coils (19) that generate magnetic fields fixedly installed inside. The first micro switch (16) is electrically connected to the electromagnetic coils (19). The radio frequency tester slot (3) has low carbon steel suction plates (20) fixedly embedded on both sides of the inner wall for the electromagnetic coils (19) to generate attraction. The floating cavity (4) and the first clustered radio frequency interface (5) are provided with a floating mechanism to form a test signal path with constant contact force. The radio frequency module (2) and the radio frequency tester slot (3) are provided with a positioning mechanism to ensure the docking accuracy of the radio frequency interface.

2. The plug-in replaceable RF module structure according to claim 1, characterized in that: The floating mechanism includes a floating seat (21), which is fixed at one end of the first clustered radio frequency interface (5). A movable piston (22) is fixedly connected to one side of the floating seat (21). The floating seat (21) and the movable piston (22) are slidably connected to the inner wall of the floating cavity (4). An air inlet pipe (25) is fixedly connected to one side of the inner wall of the floating cavity (4).

3. The plug-in replaceable RF module structure according to claim 2, characterized in that: An air pump (24) is fixedly connected to the bottom of the air intake pipe (25). The air pump (24) is fixed to the bottom of the radio frequency module (2). An exhaust pipe (26) is fixedly connected to the bottom of the inner wall of the floating cavity (4). An electromagnetic valve (27) is fixedly installed inside the exhaust pipe (26).

4. The plug-in replaceable RF module structure according to claim 3, characterized in that: The trigger signal of the second micro switch (17) controls the linkage operation of the air pump (24) and the solenoid valve (27): In the triggered state, the air pump (24) is powered on and the solenoid valve (27) is de-energized and closed, and the air pressure in the floating chamber (4) increases; In the non-triggered state, the air pump (24) is de-energized and stops, and the solenoid valve (27) is energized and opened, and the floating chamber (4) is depressurized through the exhaust pipe (26).

5. The plug-in replaceable RF module structure according to claim 1, characterized in that: The first clustered RF interface (5) is adapted to the second clustered RF interface (6), and the RF module (2) is slidably connected to the RF tester slot (3).

6. The plug-in replaceable RF module structure according to claim 1, characterized in that: The rotation trajectory of the first fan-shaped cam (14) covers the triggering part of the first micro switch (16), which is used to control the electromagnetic coil (19) to be energized to attract the low carbon steel suction plate (20) and fix the test position of the radio frequency module (2). The rotation trajectory of the second fan-shaped cam (15) covers the triggering part of the second micro switch (17), which is used to start the inflation program of the floating cavity (4) to establish the test interface connection.

7. The plug-in replaceable RF module structure according to claim 1, characterized in that: The positioning mechanism includes two V-shaped guide grooves (28), which are opened on both sides of the inner wall of the RF tester slot (3). Guide protrusions (29) are fixedly connected to both sides of the RF module (2). Fixing grooves (30) are opened on both sides of the guide protrusions (29). Ball bearings (31) are rotatably connected inside the fixing grooves (30).

8. The plug-in replaceable RF module structure according to claim 7, characterized in that: The cross-sectional shape of the guide ridge (29) is set as an isosceles triangle, and the contact surfaces of the V-shaped guide groove (28) and the ball bearing (31) are both nitrided.

9. The plug-in replaceable RF module structure according to claim 8, characterized in that: The radio frequency module (2) is fixedly connected to a plurality of conical positioning pins (32) on one side, and the inner wall of the radio frequency tester slot (3) is provided with a plurality of conical positioning holes (33) on one side surface, and the conical positioning pins (32) and the conical positioning holes (33) are slidably connected.

10. The plug-in replaceable RF module structure according to claim 1, characterized in that: When the operating handle (13) is rotated to the locked position, the eccentric protrusion (9) is engaged in the locking groove (34), and the surface of the eccentric protrusion (9) is provided with a polytetrafluoroethylene coating.

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