Radio frequency module structure with replaceable plugboard

Abstract

The invention discloses a plugboard replaceable radio frequency module structure, and particularly relates to the technical field of test equipment, the plugboard replaceable radio frequency module structure comprises a radio frequency mainboard used for radio frequency test, a radio frequency module and a radio frequency test machine slot, the radio frequency module is fixed on the outer side of the radio frequency mainboard, a floating cavity is formed in the surface of one side of the radio frequency module, and the floating cavity is communicated with the radio frequency test machine slot. The interior of the floating cavity is slidably connected with a first bunched radio frequency interface, and one side of the inner wall of the radio frequency testing machine slot is fixedly connected with a second bunched radio frequency interface. According to the invention, rapid module replacement is realized, an operation handle is rotated to synchronously trigger mechanical locking, electromagnetic adsorption and pneumatic interface crimping, locking and air pressure adjustment are formed to maintain constant contact force of a radio frequency interface, an electric interface is preferentially separated through pressure relief during unlocking so as to avoid arc damage, and a polytetrafluoroethylene coating reduces signal interference and mechanical wear. Finally, efficient replacement of the test module and connection reliability of vibration and impact resistance are achieved, and the measurement precision and the measurement stability of the radio frequency test system are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of test equipment, more particularly, the present application relates to a plug-in replaceable RF module structure. BACKGROUND

[0002] In the field of 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 further exacerbates the performance challenges of test equipment. With the development of technology and the diversification of application scenarios, higher requirements are placed on the flexibility and testing accuracy of test equipment.

[0003] The RF module of the existing RF test machine is usually of a fixed structure. When different test items need to be tested on the same device under test, the user has to disassemble the device under test from the current test machine and connect it to another test machine because different test items require different RF functions. This is a tedious and time-consuming operation that seriously affects test efficiency. At the same time, the single mechanical locking method of the test module is prone to produce micron-level gaps in a vibrating environment, causing measurement errors and making it difficult to ensure test stability and test accuracy. At the same time, the traditional fixed method by bolts has low replacement efficiency and is difficult to adapt to scenarios where test equipment is replaced frequently. SUMMARY

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

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a plug-in replaceable RF module structure, comprising an RF mainboard for RF testing, an RF module and an RF test machine slot, the RF module is fixed outside the RF mainboard, a floating cavity is formed on one side surface of the RF module, a first bundled RF interface is slidably connected inside the floating cavity, a second bundled RF interface is fixedly connected to one side of the inner wall of the RF test machine slot, the first bundled RF interface and the second bundled RF interface constitute an RF signal measurement path, and a replacement locking mechanism is arranged between the RF mainboard and the RF module to enhance test stability when connected. The replacement locking mechanism comprises an eccentric lug receiving groove, which is opened on the top surface of the radio frequency mainboard, an rotating shaft is rotatably connected inside the eccentric lug receiving groove, an eccentric lug is fixedly connected outside the rotating shaft, an inner cavity is opened inside the radio frequency module, the rotating shaft penetrates through the inner cavity and extends to one side of the radio frequency module, two fixed baffles are sleeved outside the rotating shaft, both of the fixed baffles are fixed on the inner wall bottom of the inner cavity, a reset torsion spring is fixedly connected between the two fixed baffles, the reset torsion spring is sleeved outside the rotating shaft, an operating handle is fixedly connected to one end of the rotating shaft, and a locking groove is opened on the top surface of the inner wall of the radio frequency tester slot, which is used to form locking with the eccentric lug. The rotating shaft is sequentially fixedly sleeved with a first sector cam and a second sector cam, 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, a plurality of electromagnetic coils generating magnetic fields are fixedly installed inside the radio frequency module end plates, the first micro switch is electrically connected with the electromagnetic coils, low-carbon steel suction plates for generating suction of the electromagnetic coils are fixedly embedded on both sides of the inner wall of the radio frequency tester slot, a floating mechanism is arranged between the floating cavity and the first bundled radio frequency interface, which is used to form a test signal passage with constant contact force, and a positioning mechanism is arranged between the radio frequency module and the radio frequency tester slot, which is used to ensure the butt joint accuracy of the radio frequency interface.

[0006] Preferably, the floating mechanism comprises a floating seat, which is fixed at one end of the first bundled radio frequency interface, a moving piston is fixedly connected to one side of the floating seat, both the floating seat and the moving piston are slidably connected with the inner wall of the floating cavity, and an air inlet pipe is fixedly communicated with one side of the inner wall of the floating cavity.

[0007] Preferably, an air pump is fixedly connected to the bottom of the air inlet pipe, the air pump is fixed on the bottom of the radio frequency module, an air outlet pipe is fixedly communicated with the bottom of the inner wall of the floating cavity, and an electromagnetic valve is fixedly installed inside the air outlet pipe.

[0008] Preferably, the trigger signal of the second micro switch controls the linkage operation of the air pump and the electromagnetic valve: In the triggered state, the air pump is powered on and works, and the electromagnetic valve is powered off and closed, the air pressure in the floating cavity is increased; In the non-triggered state, the air pump is powered off and stopped, and the electromagnetic valve is powered on and opened, the floating cavity is depressurized through the air outlet pipe.

[0009] Preferably, the first bundled radio frequency interface is adapted to the second bundled radio frequency interface, and the radio frequency module is slidably connected with the radio frequency tester slot.

[0010] Preferably, the rotation track of the first fan-shaped cam piece covers the trigger position of the first micro switch, for controlling the energization of the electromagnetic coil to adsorb the low carbon steel adsorption plate, fixing the test position of the radio frequency module, and the rotation track of the second fan-shaped cam piece covers the trigger position of the second micro switch, for starting the inflation program of the floating cavity to establish the test interface connection.

[0011] Preferably, the positioning mechanism comprises two V-shaped guide grooves, which are arranged on the two sides of the inner wall of the radio frequency test machine slot, and the radio frequency module is fixedly connected with guide convex strips on the two sides, and the surfaces of the guide convex strips are provided with fixing grooves, and the ball bearings are rotatably connected in the fixing grooves.

[0012] Preferably, the guide convex strips are in the shape of isosceles triangle in cross section, and the contact surfaces of the V-shaped guide grooves and the ball bearings are subjected to nitriding treatment.

[0013] Preferably, the radio frequency module is fixedly connected with a plurality of tapered positioning pins on one side, and a plurality of tapered positioning holes are arranged on the surface of one side of the inner wall of the radio frequency test machine slot, and the tapered positioning pins and the tapered positioning holes are slidably connected.

[0014] Preferably, when the operating handle is rotated to the locking position, the eccentric lug is clamped into the locking groove, and the surface of the eccentric lug is provided with a polytetrafluoroethylene coating.

[0015] Technical effects and advantages of the present application: 1. Through the rolling cooperation of the V-shaped guide groove and the guide convex strip, the ball bearing reduces the friction resistance, and the automatic centering function of the tapered positioning pin and the positioning hole is combined, so that the module insertion process does not need high-precision alignment, and one person can complete the operation, the replacement time of the traditional fixed structure is greatly shortened, the rotating operating handle can synchronously complete mechanical locking, electromagnetic auxiliary fixing and interface contact, the second fan-shaped cam piece starts the air pump, realizes one-step operation and multi-action linkage, the locking and unlocking efficiency is greatly improved, through the bundled radio frequency interface and the positioning structure, the radio frequency module of different test items can be compatible, when replaced, the test machine slot does not need to be adjusted, the rapid switching demand of multiple types of devices under test is met, and the flexibility of the test system is improved, when the test item of the device under test needs to be changed, the plug-in board replaceable radio frequency module structure is taken down, and other plug-in board replaceable radio frequency module structures meeting the requirements are plugged in. 2. The radial force is provided by the eccentric protrusion and locking groove, the axial pre-tightening force is formed by the electromagnetic coil and low-carbon steel suction plate, the floating mechanism adjusts the air pressure of the floating cavity through the air pump to maintain constant contact force between the first and second bundled RF interfaces, even if there is wear after long-term use, the reliable electrical connection can still be maintained through air pressure compensation, the signal jump problem caused by poor contact of the traditional rigid interface is solved, a certain vibration impact can be withstood, the interface is not loose during testing, the connection reliability is enhanced through multiple locking, the V-shaped guide groove and the rolling guide of the ball bearing limit lateral deviation, the taper surface of the taper positioning pin is matched to realize fine adjustment in the last stage, the coaxiality error of the bundled RF interface is extremely small, and the high stability and measurement accuracy of the RF test are ensured; 3. The first bundled RF interface is separated from the mechanical structure first through the floating cavity pressure relief when unlocking, arc ablation is avoided when plugging and unplugging, the life of the bundled interface is improved, the electrical separation gives priority to protecting the interface, the polytetrafluoroethylene coating on the surface of the eccentric protrusion avoids metal contact interference with the RF signal, improves the locking friction, reduces mechanical wear, the reset torsion spring ensures that the eccentric protrusion is automatically reset when unlocking, the electromagnetic valve is automatically opened to release pressure when power is off, forced damage caused by structural jamming is avoided, the equipment failure rate and maintenance frequency are reduced, the trigger logic of the sector cam and the microswitch ensures that the timing is rigorous when the action is performed, the electromagnetic adsorption and interface contact are started only after the mechanical locking is completed, forced operation in the misaligned state is avoided, and the interface and module structure are protected.

[0016] In summary, through the mutual influence of the above-mentioned multiple effects, the module is quickly replaced, the rotary operation handle synchronously triggers mechanical locking, electromagnetic adsorption and pneumatic interface crimping, radial and axial cooperative locking is formed, the air pressure of the floating mechanism is adjusted to maintain constant contact force of the RF interface, the positioning ensures the coaxiality accuracy of the interface, the electrical interface is preferentially separated through pressure relief when unlocking to avoid arc damage, the polytetrafluoroethylene coating reduces signal interference and mechanical wear, and finally the high-efficiency replacement of the test module, the connection reliability against vibration impact and the protection of the long-life electrical interface are achieved, the flexibility and measurement stability of the RF test system are significantly improved, and the RF test system is suitable for high-precision RF test scenes such as communication equipment and radar systems. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the application.

[0018] Figure 2 It is a schematic diagram of the structure of the RF module of the application.

[0019] Figure 3 It is a schematic diagram of the Figure 2 cut structure.

[0020] Figure 4 It is a schematic diagram of the external structure of the rotating shaft of the application.

[0021] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point A in the middle.

[0022] Figure 6 It is a structural schematic diagram of the guide ridges of the present invention.

[0023] Figure 7 It is a schematic cross-sectional structural diagram of the radio frequency module of the present invention.

[0024] Figure 8 It is a structural schematic diagram of the floating mechanism of the present invention.

[0025] The accompanying drawings are marked as follows: 1. RF main board; 2. RF module; 3. RF test machine slot; 4. floating cavity; 5. first clustered RF interface; 6. second clustered RF interface; 7. eccentric bump storage groove; 8. rotating shaft; 9. eccentric bump; 10. inner cavity; 11. fixed baffle; 12. reset torsion spring; 13. operating handle; 14. first sector cam; 15. second sector 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. intake pipe; 26. exhaust pipe; 27. electromagnetic valve; 28. V-shaped guide groove; 29. ​​guide ridge; 30. fixing groove; 31. ball bearing; 32. tapered positioning pin; 33. tapered positioning hole; 34. locking groove. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the 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.

[0027] As attached Figures 1-8 The illustrated plug-in replaceable RF module structure includes an RF mainboard 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 mainboard 1. A floating cavity 4 is defined on one side of the RF module 2. A first clustered RF interface 5 is slidably connected to the interior of 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 constitute an RF signal measurement path. A replacement locking mechanism is provided between the RF mainboard 1 and the RF module 2 to enhance test stability during connection. The modular design of the radio frequency module 2 and the radio frequency mainboard 1 realizes quick plugging and unplugging with the radio frequency test machine slot 3, and solves the problem of complicated replacement of the traditional fixed structure. The replacement locking mechanism comprises an eccentric lug receiving groove 7 formed in the top surface of the radio frequency mainboard 1, a rotating shaft 8 rotatably connected inside the eccentric lug receiving groove 7, an eccentric lug 9 fixedly connected to the outer side of the rotating shaft 8, an inner cavity 10 formed in the radio frequency module 2, the rotating shaft 8 penetrating through the inner cavity 10 and extending to one side of the radio frequency module 2, two fixed baffles 11 fixedly arranged on the inner wall of the inner cavity 10, a reset torsion spring 12 fixedly connected between the two fixed baffles 11, the reset torsion spring 12 being sleeved on the outer side of the rotating shaft 8, an operating handle 13 fixedly connected to one end of the rotating shaft 8, and a locking groove 34 formed in the top surface of the inner wall of the radio frequency test machine slot 3 and used for locking the eccentric lug 9. The cooperation of the eccentric lug 9 and the locking groove 34 generates radial locking force, ensuring that the radio frequency module 2 is rigidly fixed with the radio frequency test machine slot 3. The linkage design of the rotating shaft 8 and the operating handle 13 realizes one-step operation to complete locking. 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 lug receiving groove 7 and the inner cavity 10 reduces the interference of the external environment on the core components. The rotating shaft 8 is fixedly sleeved with a first sector cam 14 and a second sector cam 15 in sequence. 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. A plurality of electromagnetic coils 19 generating magnetic fields are fixedly installed inside the radio frequency module end plates 18. The first micro switch 16 is electrically connected with the electromagnetic coils 19. Low-carbon steel suction plates 20 for generating suction force of the electromagnetic coils 19 are fixedly embedded on both sides of the inner wall of the radio frequency test machine slot 3. A floating mechanism is arranged between the floating cavity 4 and the first bundled radio frequency interface 5, which is used to form a constant contact force test signal path. A positioning mechanism is arranged between the radio frequency module 2 and the radio frequency test machine slot 3, which is used to ensure the precision of the radio frequency interface butt joint.

[0028] The linkage of the first sector cam 14 and the first micro switch 16 can synchronously trigger the electromagnetic coils 19 to be powered on after mechanical locking, forming axial pre-tightening force with the low-carbon steel suction plate 20, supplementing the gap of the radial locking force, and improving the anti-vibration capability. The cooperation of the second sector cam 15 and the second micro switch 17 realizes time sequence control of the floating mechanism and the mechanical lock, avoiding wear caused by early contact of the interface. The radio frequency module end plates 18 integrate the electromagnetic coils 19, reducing the influence of electromagnetic interference on the radio frequency signal. As shown in the accompanying drawings, Figure 1 , 8As shown, the floating mechanism includes a floating seat 21, which is fixed to one end of the first clustered RF 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 both slidably connected to the inner wall of the floating chamber 4. An air inlet pipe 25 is fixedly connected to one side of the inner wall of the floating chamber 4. The sliding fit between the floating seat 21 and the movable piston 22 allows the first clustered RF interface 5 to float axially along 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, controlling the contact force through air pressure, and solving the problem of poor contact of traditional rigid interfaces.

[0029] As attached Figure 1 、 8 As shown, the bottom of the air inlet pipe 25 is fixedly connected to an air pump 24, which is fixed to the bottom of the RF module 2. The bottom of the inner wall of the floating cavity 4 is fixedly connected to an exhaust pipe 26, and an electromagnetic valve 27 is fixedly installed inside the exhaust pipe 26. The air pump 24 and the air inlet pipe 25 can cooperate to quickly adjust the air pressure in the floating chamber 4 to adapt to the contact force requirements of different test scenarios. The exhaust pipe 26 and the electromagnetic valve 27 can achieve rapid pressure relief to ensure that the interface is separated in time when unlocking to avoid arc ablation. The air pump 24 is integrated at the bottom of the RF module 2, eliminating the need for an external air source and improving the portability of the equipment.

[0030] 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 electromagnetic valve 27: In the trigger state, the air pump 24 is powered on and the electromagnetic valve 27 is powered off and closed, and the air pressure in the floating chamber 4 increases; In the non-triggering state, the air pump 24 is powered off and stopped, and the electromagnetic valve 27 is powered on and opened, and the floating chamber 4 is depressurized through the exhaust pipe 26; The linkage control of the second micro switch 17 ensures the timing of the inflation contact after the mechanical locking is completed, avoids forced contact when the interface is misaligned, makes the interface contact and separation actions precise and controllable, and prolongs the life of the cluster interface.

[0031] As attached Figure 1 、 2 As shown in , 3, 7, and 8, 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; The sliding connection between the RF module 2 and the RF tester slot 3 cooperates with the positioning mechanism, so that plugging and unplugging can be completed by a single person, which greatly shortens the replacement time.

[0032] As attached Figure 1 、 3, 4, 5, 7, the first sector cam piece 14 rotation track covers the trigger position of the first micro switch 16, for controlling the electromagnetic coil 19 power adsorption low carbon steel suction plate 20, fixed radio frequency module 2 test position, the second sector cam piece 15 rotation track covers the trigger position of the second micro switch 17, for starting the inflation procedure to establish the test interface connection of floating cavity 4; The rotation track design of the first sector cam piece 14 and the second sector cam piece 15 ensures the reliability of micro switch triggering, avoids misoperation, and the electromagnetic adsorption controlled by the first sector cam piece 14 and the inflation procedure started by the second sector cam piece 15 form a mechanical, electromagnetic and pneumatic triple fixation, which significantly improves the test stability.

[0033] As shown in the accompanying drawings Figure 1 , 2 , 3, 6, the positioning mechanism includes two V-shaped guide grooves 28, which are arranged on the inner walls of the radio frequency test machine slot 3, and the radio frequency module 2 is fixedly connected with guide protrusions 29 on both sides, and the surfaces of the guide protrusions 29 are provided with fixed grooves 30, and the inner parts of the fixed grooves 30 are rotatably connected with ball bearings 31. The cooperation of the V-shaped guide groove 28 and the guide protrusion 29 limits the lateral deviation of the radio frequency module 2, ensures the interface alignment accuracy, the ball bearing 31 converts sliding friction into rolling friction, reduces the insertion resistance, and is suitable for high frequency plugging scene.

[0034] As shown in the accompanying drawings Figure 1 , 2 , 3, 6, the guide protrusions 29 are arranged in the shape of isosceles triangle, the contact surfaces of the V-shaped guide grooves 28 and the ball bearings 31 are treated with nitriding, the cooperation of the isosceles triangle guide protrusions 29 and the V-shaped guide grooves 28 has the function of automatic centering, reduces the difficulty of manual alignment, the nitriding treatment of the contact surfaces improves the wear resistance and maintains the guiding accuracy.

[0035] As shown in the accompanying drawings Figure 1 , 2 , 3, 7, 8, the radio frequency module 2 is fixedly connected with a plurality of tapered positioning pins 32 on one side, a plurality of tapered positioning holes 33 are arranged on the surface of the inner wall of the radio frequency test machine slot 3, the tapered positioning pins 32 and the tapered positioning holes 33 are connected in sliding mode, the tapered positioning pins 32 and the tapered positioning holes 33 are matched in the tapered surface to realize the fine adjustment at the end of insertion, ensure the precise butt joint of the cluster interface, and the design of multiple groups of positioning pin holes further improves the positioning reliability and adapts to the thermal expansion difference in wide temperature environment.

[0036] As shown in the accompanying drawings Figure 1 , 2, 3, 4, 7, when the rotating handle 13 is rotated to the locking position, the eccentric lug 9 is clamped into the locking groove 34, the surface of the eccentric lug 9 is provided with a polytetrafluoroethylene coating, the polytetrafluoroethylene coating reduces the metal contact interference between the eccentric lug 9 and the locking groove 34, reduces the radio frequency signal insertion loss, improves the surface wear resistance and lubricity, and makes the locking and unlocking operation more smooth, and avoids the structural jam caused by rust.

[0037] The working principle of the application is as follows: the plug-in board replaceable RF module structure is cooperatively designed through mechanical locking, electromagnetic auxiliary fixing and floating interface, so that the RF module 2 can be quickly replaced and stably tested in the RF test machine slot 3; when the RF module 2 is inserted into the RF test machine slot 3, the guide lugs 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 improved wear resistance through nitriding treatment in the fixed grooves 30 on both sides of the lugs are in rolling contact with the V-shaped guide groove 28, which reduces the insertion resistance and limits the lateral deviation; 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 through the taper cooperation, the last stage of fine adjustment is realized through the taper guide, the RF interface docking accuracy is ensured, and the first and second bundled RF interfaces 5 and 6 are axially aligned; After the module is completely inserted, the operator rotates the handle 13 to drive the rotating shaft 8 to rotate, the eccentric lug 9 on the outer side of the shaft is turned out from the eccentric lug storage groove 7, the eccentric lug 9 is clamped into the locking groove 34 of the RF test machine slot 3 to generate a radial locking force, rigidly fixing the RF module 2 and the RF test machine slot 3; at this time, the reset torsional spring 12 on the outer side of the rotating shaft 8 is twisted to store energy, providing reset power for subsequent unlocking, the polytetrafluoroethylene coating on the surface of the eccentric lug 9 avoids the interference of metal contact on the radio frequency signal, and improves the friction between the eccentric lug 9 and the locking groove 34; during the rotation of the rotating shaft 8, the first sector cam piece 14 on the outer side of the shaft rotates synchronously, when the handle 13 reaches the locking position, the outer arc surface of the first sector cam piece 14 triggers the first micro switch 16, the electromagnetic coil 19 in the RF module end plate 18 is energized to generate a magnetic field, and the low-carbon steel suction plate 20 on the inner wall of the RF test machine slot 3 forms an axial pre-tightening force, supplementing the gap of the mechanical locking and enhancing the connection stability, thereby ensuring the test effect; Meanwhile, the second sector cam piece 15 on the rotating shaft 8 triggers the second micro switch 17, starts the air pump 24 and closes the electromagnetic valve 27 in the exhaust pipe 26, and the compressed air enters the floating cavity 4 through the air inlet pipe 25, pushes the moving piston 22 and the floating seat 21 to drive the first bundled radio frequency interface 5 to move to the slot direction, forms an interference fit with the second bundled radio frequency interface 6, establishes a reliable radio frequency signal measurement path, and the radio frequency signal is transmitted through the cooperation of the first bundled radio frequency interface 5 and the second bundled radio frequency interface 6, the mechanical locking and the electromagnetic adsorption jointly suppress the vibration interference, the floating mechanism compensates the contact wear through the air pressure, and the signal transmission is stable during the test process. The operator reversely rotates the operating handle 13, resets the torsion spring 12 to release the stored energy, drives the rotating shaft 8 to rotate counterclockwise, the eccentric lug 9 is separated from the locking groove 34 and is withdrawn to the eccentric lug storage groove 7, the mechanical locking is released, when the rotating shaft 8 rotates, the first sector cam piece 14 is separated from the first micro switch 16, the electromagnetic coil 19 is de-energized, and the electromagnetic adsorption force disappears; the second sector cam piece 15 is separated from the second micro switch 17, the air pump 24 stops working, the electromagnetic valve 27 is energized and opened, the floating cavity 4 is depressurized through the exhaust pipe 26, the first bundled radio frequency interface 5 is reset under the action of the spring 23 and is separated from the second bundled radio frequency interface 6, the electrical separation is realized before the mechanical separation, arc ablation is avoided when the plug is pulled out, the radio frequency module 2 is withdrawn, the test equipment remains unchanged, and the replacement of the test module is realized. When it is required to change the test items of the tested equipment, the plugboard replaceable radio frequency module structure is taken down, and other plugboard replaceable radio frequency module structures meeting the requirements are inserted.

[0038] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change; Secondly: the drawings of the disclosed embodiments of the present application only involve the structures related to the disclosed embodiments of the present application, other structures can refer to the usual design, and in the case of no conflict, the same embodiment and different embodiments of the present application can be combined with each other; Finally: the above only describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A plug-in replaceable radio frequency module structure, comprising a radio frequency mainboard (1), a radio frequency module (2) and a radio frequency tester slot (3) for radio frequency testing, characterized in that: The radio frequency module (2) is fixed on the outside of the radio frequency main board (1), a floating cavity (4) is provided 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 test machine slot (3), the first clustered radio frequency interface (5) and the second clustered radio frequency interface (6) constitute a radio frequency signal measurement path, and a replacement locking mechanism is provided between the radio frequency main board (1) and the radio frequency module (2) for enhancing test stability during connection; The replacement locking mechanism includes an eccentric protrusion receiving groove (7), the eccentric protrusion receiving groove (7) is provided on the top surface of the radio frequency main board (1), the eccentric protrusion receiving groove (7) is rotatably connected to a rotating shaft (8), the outer side of the rotating shaft (8) is fixedly connected to an eccentric protrusion (9), the radio frequency module (2) is provided with an inner cavity (10), one side of the rotating shaft (8) passes through the inner cavity (10) and extends to one side of the radio frequency module (2), the outer side of the rotating shaft (8) is provided with two fixed baffles (11), the two 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 provided on the outer side of the rotating shaft (8), one end of the rotating shaft (8) is fixedly connected to an operating handle (13), and the top surface of the inner wall of the radio frequency test machine slot (3) is provided with a locking groove (34) for locking with the eccentric protrusion (9); The outer side of the rotating shaft (8) is fixedly sleeved with a first sector-shaped cam piece (14) and a second sector-shaped cam piece (15) in sequence, and 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). The radio frequency module (2) is fixedly embedded with a radio frequency module end plate (18) on both sides, and a plurality of electromagnetic coils (19) for generating a magnetic field are fixedly installed inside the radio frequency module end plate (18). The first micro switch (16) and the electromagnetic coil (19) are electrically connected. A low-carbon steel suction plate (20) for generating suction force for the electromagnetic coil (19) is fixedly embedded on both sides of the inner wall of the radio frequency test machine slot (3). A floating mechanism is provided between the floating cavity (4) and the first clustered radio frequency interface (5) for forming a test signal path with a constant contact force. A positioning mechanism is provided between the radio frequency module (2) and the radio frequency test machine slot (3) for ensuring 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), the floating seat (21) is fixed to one end of the first clustered radio frequency interface (5), one side of the floating seat (21) is fixedly connected to a movable piston (22), the floating seat (21) and the movable piston (22) are both slidably connected to the inner wall of the floating cavity (4), and one side of the inner wall of the floating cavity (4) is fixedly connected to an air inlet pipe (25).

3. The plug-in replaceable RF module structure according to claim 2, characterized in that: The bottom of the air inlet pipe (25) is fixedly connected to an air pump (24), and the air pump (24) is fixed to the bottom of the radio frequency module (2). The bottom of the inner wall of the floating cavity (4) is fixedly connected to an exhaust pipe (26), and 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 electromagnetic valve (27): In the triggered state, the air pump (24) is powered on and the electromagnetic valve (27) is powered off and closed, and the air pressure in the floating chamber (4) increases; In the non-triggering state, the air pump (24) is powered off and stopped, and the electromagnetic valve (27) is powered on 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 radio frequency interface (5) and the second clustered radio frequency interface (6) are adapted to each other, and the radio frequency module (2) and the radio frequency tester slot (3) are slidably connected.

6. The plug-in replaceable RF module structure according to claim 1, characterized in that: The rotation track of the first sector-shaped cam piece (14) covers the triggering position of the first micro switch (16), and is used to control the electromagnetic coil (19) to be energized to adsorb the low-carbon steel suction plate (20) and fix the test position of the radio frequency module (2). The rotation track of the second sector-shaped cam piece (15) covers the triggering position of the second micro switch (17), and is used to start the inflation program of the floating chamber (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 comprises two V-shaped guide grooves (28), the V-shaped guide grooves (28) being provided on both sides of the inner wall of the radio frequency tester slot (3), the radio frequency module (2) being fixedly connected with guide ridges (29) on both sides, the surfaces of both sides of the guide ridges (29) being provided with fixing grooves (30), and the fixing grooves (30) being rotatably connected with ball bearings (31) inside.

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 to be an isosceles triangle, and the contact surface between the V-shaped guide groove (28) and the ball bearing (31) is nitrided.

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

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

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