A test fixture for radio frequency power amplifier board

Abstract

The present invention relates to the technical field of test fixtures, and specifically to a radio frequency power amplifier board test fixture, comprising a fixed seat, a top side of the fixed seat is fixedly connected to a mutually symmetrical telescopic guide rod, the top of the telescopic guide rod is fixedly connected to a pressure plate, an electric push rod is fixedly connected between the fixed seat and the pressure plate, a placement groove is provided on the top of the fixed seat, and a plurality of elastic probe pieces are installed on the pressure plate. The plurality of elastic probe pieces can be driven to move by the downward pressing pressure plate, and move toward the radio frequency power amplifier board placed in the placement groove, so that the plurality of elastic probe pieces are in contact with the radio frequency power amplifier board, and the elastic components inside the elastic probe pieces can be made to contact each component on the radio frequency power amplifier board, thereby reducing the phenomenon that the elastic probe pieces do not contact the components, eliminating the test errors caused by the elastic probe pieces not contacting the components to the greatest extent, and improving the accuracy of the test of the radio frequency power amplifier board.

Description

Technical Field

[0001] The present invention relates to the technical field of test fixtures, in particular to a test fixture for a radio frequency power amplifier board. Background Art

[0002] The RF power amplifier board is one of the core components of the wireless communication system. Its technological development closely follows the evolution of modern communication needs. It is a circuit board designed specifically for amplifying RF signal power and is widely used in wireless communications, radar, broadcasting and other fields. When producing RF power amplifier boards, it is necessary to perform performance tests on the RF power amplifier boards leaving the factory to ensure the factory quality of the RF power amplifier boards. When performing performance testing on them, it is often necessary to fix the RF power amplifier boards with test fixtures and perform a series of tests on the RF power amplifier boards with the help of test equipment.

[0003] The test fixtures currently on the market have built-in probe groups or contact plates, so that when the test fixture is fixed to the RF power amplifier board, it can contact the components on the RF power amplifier board through the probe group or contact plate, and then cooperate with external test equipment to transmit test signals to the components, thereby testing the RF power amplifier board.

[0004] However, most of the existing probe groups or contact plates are fixed inside the fixture. Since the components on the RF power amplifier board are of different sizes, the probe group or contact plate is prone to deviation when contacting the RF power amplifier board. Some contact points on the probe group or contact plate cannot form contact with the components, which will cause the test signal to be unable to be stably transmitted to each component, and then the test data will produce errors, resulting in inaccurate test data, which is not conducive to people conducting performance testing on the RF power amplifier board. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a radio frequency power amplifier board test fixture. Through the elastic component inside the elastic probe piece, the elastic probe piece can contact each component on the radio frequency power amplifier board, reducing the phenomenon of the elastic probe piece not contacting the component, minimizing the test errors caused by the elastic probe piece not contacting the component, and improving the accuracy of the test of the radio frequency power amplifier board.

[0006] The top of described sliding panel also is provided with an interlocking structure, and the interlocking structure is hinged on the base, is fixed with a base end, and an end of sliding panel withstands on the back of the interlocking structure.

[0007] The electric push rod drives the pressure plate downward toward the fixed seat, and the pressure plate drives the driving rod to drive the transmission assembly, and then drives the elastic fixing part to contact and fix the RF power amplifier board. At this time, the transmission assembly synchronously drives the linkage part to lift the shielding cover so that it contacts the downward pressure plate, forming a closure for the placement slot. At the same time, the moving pressure plate drives the elastic probe part to contact the RF power amplifier board, completing the fixation of the RF power amplifier board.

[0008] Preferably, a control box is fixedly connected to one side of the telescopic guide rod, fan groups are installed on both sides of the pressure plate, and the control box is electrically connected to the fan group.

[0009] Preferably, a cavity is opened inside the pressure plate, and the elastic probe member includes a probe body slidably connected to the inside of the pressure plate, the probe body is fixedly connected to a limiting plate, and a spring is sleeved on the probe body, and the end of the probe body away from the limiting plate is fixedly connected to a connecting wire, and the end of the connecting wire away from the probe body is connected to the external box.

[0010] Preferably, air guide cavities are provided on both sides of the interior of the pressure plate, the air guide cavities are connected to the cavity, the fan group is installed inside the air guide cavity, a plurality of air guide ports are provided at the bottom of the pressure plate, the air guide ports are connected to the cavity, and a dustproof screen is fixedly connected to one end of the air guide cavity away from the cavity.

[0011] Preferably, the transmission assembly includes a vertical rod fixedly connected to the inner cavity, a driving member is slidably mounted on the vertical rod, and a second spring is sleeved on the vertical rod, and the second spring is located below the driving member.

[0012] Preferably, the driving member includes a driving block connected to the vertical pole, the four sides of the driving block are rotatably connected to push-pull rods, the end of the push-pull rod away from the driving block is rotatably connected to the elastic fixing member, and the bottom ends of the four sides of the driving block are installed with pressure pieces, which are transmission-connected to the linkage member.

[0013] Preferably, the elastic fixing member includes a thrust block slidably mounted on one side of the fixing seat, one side of the thrust block is fixedly connected to mutually symmetrical elastic members, the end of the elastic member away from the thrust block is fixedly connected to a splint, the splint is located on the inner side of the placement groove, and the bottom of the thrust block is rotatably connected to the push-pull rod.

[0014] Preferably, the elastic member comprises a telescopic rod fixedly connected between the thrust block and the clamping plate, and a spring three is sleeved on the telescopic rod.

[0015] Preferably, the linkage member includes columns symmetrically connected in the inner cavity, the top of the column is rotatably connected to a linkage rod, one side of the linkage rod is rotatably connected to the shielding cover, and a sliding groove is provided at one end of the linkage rod away from the shielding cover.

[0016] Preferably, the pressing member includes a force-bearing plate fixedly connected to the bottom end of one side of the driving block, and the end of the force-bearing plate away from the driving block is fixedly connected to a sliding block, and the sliding block is slidably installed inside the sliding groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention can drive multiple elastic probe pieces to move by pressing the pressing plate downward, and move them toward the RF power amplifier board placed in the placement groove, so that the multiple elastic probe pieces are in contact with the RF power amplifier board. The elastic components inside the elastic probe pieces can make the elastic probe pieces contact each component on the RF power amplifier board, thereby reducing the phenomenon that the elastic probe pieces do not contact the components properly, eliminating the test errors caused by the elastic probe pieces not contacting the components to the greatest extent, and improving the accuracy of the test of the RF power amplifier board. At the same time, since the elastic probe pieces are in elastic contact with the RF power amplifier board, the possibility of the elastic probe pieces being worn or deformed during long-term use or use is reduced, and the components on the RF power amplifier board will not be damaged when in contact, thereby improving the stability and accuracy of the test results.

[0019] 2. During the pressing process of the pressing plate, the driving rod can be driven to be inserted into the jack, and the transmission assembly can be driven to resist, so that the internal components of the transmission assembly can be operated, and then the multiple elastic fixing parts can be driven to move toward the position of the RF power amplifier board inside the placement slot, and then the multiple elastic fixing parts can be pushed to the middle of the placement slot and fixed by resistance, thereby realizing rapid fixation of the RF power amplifier board and improving the fixing speed of the RF power amplifier board. At the same time, after fixation, the elastic probe part can be prevented from being displaced during the resistance test of the RF power amplifier board, thereby improving the stability of the contact point of the elastic probe part during the test and the accuracy of the test results;

[0020] 3. When the driving rod drives the transmission assembly downward, the internal components of the transmission assembly can synchronously drive the linkage parts, so that the internal components of the linkage parts are in operation, and then drive the shielding cover, so that the shielding cover rises from the inside of the storage cavity, and then moves toward the direction of the pressure plate. When the pressure plate is pressed down to drive the elastic probe part to contact the RF power amplifier board, the shielding cover contacts the bottom of the pressure plate, so that a closed space is formed at the placement slot. The shielding cover blocks external electromagnetic waves, and cooperates with the fixing seat and the pressure plate to block external electromagnetic waves, reducing the possibility of electromagnetic waves being transmitted into the placement slot, thereby reducing the interference of electromagnetic waves on the RF power amplifier board during testing, reducing the error of test data, and improving test accuracy.

[0021] 4. When the fixing seat, pressure plate and shielding cover form a seal, the position of the pressure plate can be detected through the control box, and the fan group can be turned on to allow the fan group to draw external air into the placement slot to form wind, and cool the elastic probe member and the RF power amplifier board to reduce the possibility of the RF power amplifier board component temperature rising too fast during testing and affecting performance or damage, thereby increasing the accuracy of the test. At the same time, the elastic probe member is cooled to prevent it from being slightly deformed by sudden high temperature conduction during the contact test with the RF power amplifier board, thereby avoiding affecting the transmission of signals during the test and improving the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of the closed structure of the present invention.

[0024] Figure 3 It is a schematic diagram of the local structure of the fixing seat in the present invention.

[0025] Figure 4 It is a cross-sectional view of the fixing seat in the present invention.

[0026] Figure 5 It is a structural schematic diagram of the fixing seat in the present invention.

[0027] Figure 6 It is a schematic diagram of the partial structure of the pressure plate of the present invention.

[0028] Figure 7 Schematic diagram of the structure of the elastic probe member in the present invention.

[0029] Figure 8 It is a structural schematic diagram of the transmission component in the present invention.

[0030] Figure 9 Schematic diagram of the structure of the elastic fixing member in the present invention.

[0031] Figure 10 It is a schematic diagram of the connection structure between the linkage member and the shielding cover in the present invention.

[0032] Figure 11 For the present invention Figure 10 A partial enlarged schematic diagram of point A in the middle.

[0033] In the figure: 1. fixing seat; 2. pressure plate; 3. elastic probe member; 4. transmission assembly; 5. elastic fixing member; 6. control box; 7. linkage member; 8. shielding cover; 9. driving rod; 11. placement slot; 12. socket; 13. storage chamber; 14. telescopic guide rod; 15. electric push rod; 21. fan assembly; 22. air guide chamber; 23. air guide port; 24. dustproof screen; 25. external box; 31. probe body; 32. limit plate; 33. connecting line; 34. spring 1; 41. vertical pole; 42. spring 2; 43. driving block; 44. push-pull rod; 45. force plate; 46. slider; 51. thrust block; 52. telescopic rod; 53. spring 3; 54. splint; 71. column; 72. linkage rod; 73. slide groove. DETAILED DESCRIPTION

[0034] 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. Example 1

[0035] See also Figures 1 to 7, which is the first embodiment of the present invention, provides a technical solution: a radio frequency power amplifier board test fixture, including a fixed base 1, a top side of the fixed base 1 is fixedly connected to a mutually symmetrical telescopic guide rod 14, the top of the telescopic guide rod 14 is fixedly connected to a pressure plate 2, an electric push rod 15 is fixedly connected between the fixed base 1 and the pressure plate 2, and the outer sides of the fixed base 1 and the pressure plate 2 are added with metal plating, such as silver plating, nickel plating and other metal materials, which can form a shielding layer on the fixed base 1 and the pressure plate 2, thereby blocking electromagnetic waves in the environment, the fixed base 1 is provided with a placement slot 11, a plurality of elastic probe pieces 3 are installed on the pressing plate 2, and the top of the pressing plate 2 is fixedly connected to an external box 25, one end of the elastic probe piece 3 is connected to the external box 25, here, the external detection device is connected through the external box 25, so that the external device signal is transmitted from the external box 25 to the elastic probe piece 3, and the signal is transmitted to the RF power amplifier board through the elastic probe piece 3, thereby testing the fixed RF power amplifier board, the bottom two sides of the pressing plate 2 are fixedly connected to the driving rod 9, the fixing seat 1 An inner cavity is opened inside, and a transmission component 4 is fixedly connected to the inner cavity. A socket 12 is opened on both sides of the fixing seat 1, and the socket 12 is connected to the inner cavity. The socket 12 and the drive rod 9 are on the same axis, and the diameter of the socket 12 is larger than the size of the drive rod 9, so that the drive rod 9 will not be stuck or blocked when inserted into the socket 12. Elastic fixing members 5 are installed on all four sides of the inner side of the placement groove 11, and the transmission component 4 is connected to the elastic fixing member 5 in transmission. Linkage members 7 are installed on both sides of the inner cavity, and the linkage member 7 is connected to the inner side of the inner cavity. The transmission assembly 4 is in transmission connection. A receiving cavity 13 is provided on the fixed base 1. The shield cover 8 is slidably connected to the interior of the receiving cavity 13. Here, the inner surface of the receiving cavity 13 is smoothed to reduce the friction between the shield cover 8 and the receiving cavity 13, improve the smoothness of the shield cover 8 when moving, and reduce the wear of the inner wall of the receiving cavity 13 caused by the shield cover 8 when moving. The shield cover 8 is made of metallic glass, which has high magnetic permeability and low hysteresis loss, and can block the surrounding electromagnetic waves. The linkage 7 is in transmission connection with the shield cover 8.

[0036] By driving the electric push rod 15, the pressure plate 2 is pressed downward toward the fixing seat 1, and the pressure plate 2 drives the driving rod 9 to drive the transmission component 4, and then drives the elastic fixing part 5 to contact and fix the RF power amplifier board. At this time, the transmission component 4 synchronously drives the linkage part 7 to lift the shielding cover 8, so that it contacts the downward pressing plate 2, forming a closure on the placement groove 11. At the same time, the moving pressure plate 2 drives the elastic probe part 3 to contact the RF power amplifier board, completing the fixation of the RF power amplifier board.

[0037] A cavity is provided inside the pressure plate 2, and the elastic probe member 3 includes a probe body 31 slidably connected to the inside of the pressure plate 2, and the probe body 31 is fixedly connected to the limiting plate 32, and a spring 34 is sleeved on the probe body 31. Here, the spring 34 is located between the top wall of the cavity and the limiting plate 32, and the end of the spring 34 away from the pressure plate 2 contacts the top wall of the cavity, and then cooperates with the limiting plate 32 to achieve the elastic expansion and contraction effect of the probe body 31. The end of the probe body 31 away from the limiting plate 32 is fixedly connected to the connecting wire 33, and the end of the connecting wire 33 away from the probe body 31 is connected to the external box 25. The interior of the external box 25 is provided with a plurality of sliding holes for cooperating with the sliding of the probe body 31 to realize the elastic expansion and contraction function of the probe body 31, and the connecting wire 33 is wound inside the external box 25, and the wound connecting wire 33 will not interfere with the movement of the probe body 31.

[0038] When testing the RF power amplifier board, the RF power amplifier board can be placed inside the placement slot 11 first. Then, under the operation of the electric push rod 15, the pressure plate 2 can be driven to press down toward the fixed seat 1, and then drive multiple probe bodies 31 to move toward the RF power amplifier board. As the pressure plate 2 is pressed down, the probe body 31 contacts the components on the RF power amplifier board, and then the external test equipment is connected to the external box 25. The test signal is transmitted to the external box 25 through the external test equipment, and the signal is transmitted to the probe body 31 through the connecting line 33. The signal is transmitted to the component through the probe body 31, and the RF power amplifier board can be tested. After the test is completed, the pressure plate 2 is driven to lift upward through the operation of the electric push rod 15, so that the pressure plate 2 drives multiple probe bodies 31 to break away from contact with the RF power amplifier board, and the RF power amplifier board inside the placement slot 11 can be manually taken out.

[0039] Before testing the RF power amplifier board, the limit plate 32 can be elastically squeezed by the elastic action of the spring 1 34, and then the probe body 31 can be placed on the top, so that the probe body 31 is always in contact with the component. If it contacts a large-sized component, the probe body 31 is subjected to a reaction when contacting it, so that the probe body 31 shrinks inside the cavity, which can adapt to the large-sized component and will not affect the contact of other elastic probe parts 3 with the remaining components. In this way, it is ensured that each probe body 31 contacts every component on the RF power amplifier board, reducing the phenomenon of the probe body 31 not being in contact with the component, ensuring the output of the test signal, and eliminating the test data error caused by the contact point deviation to the maximum extent, thereby improving the accuracy of the test of the RF power amplifier board. At the same time, due to the combination of the spring 1 34 and the limit plate 32, the probe body 31 forms an elastic contact with the RF power amplifier board, reducing the possibility of wear and deformation of the probe body 31 during long-term use or use, and no damage to the components on the RF power amplifier board due to excessive resistance force during contact, thereby improving the stability and accuracy of the test results. Example 2

[0040] See also Figure 8 and Figure 9 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the transmission assembly 4 includes a vertical rod 41 fixedly connected to the inner cavity, a driving member is slidably mounted on the vertical rod 41, and a spring 2 42 is sleeved on the vertical rod 41. The spring 2 42 is located below the driving member. Here, the driving member can be reset by the elastic action of the spring 2 42.

[0041] The driving member includes a driving block 43 that is connected to the vertical rod 41. The four sides of the driving block 43 are rotatably connected to push-pull rods 44. The end of the push-pull rod 44 away from the driving block 43 is rotatably connected to the elastic fixing member 5. The bottom ends of the four sides of the driving block 43 are all installed with pressure pieces, which are transmission-connected to the linkage member 7.

[0042] The elastic fixing part 5 includes a thrust block 51 slidably mounted on one side of the inner side of the fixing seat 1, and one side of the thrust block 51 is fixedly connected to a mutually symmetrical elastic part, and the end of the elastic part away from the thrust block 51 is fixedly connected to a splint 54, and the splint 54 is located on the inner side of the placement groove 11. The bottom of the thrust block 51 is rotatably connected to the push-pull rod 44. Here, the interior of the fixing seat 1 is provided with a moving space for adapting to the thrust block 51, which can facilitate the movement of the elastic fixing part 5. At the same time, the thrust block 51 is smoothed to reduce the friction with the moving space and improve the smoothness of the movement. The outside of the splint 54 is wrapped with a rubber layer and has a certain elasticity. When the splint 54 is used to fix the RF power amplifier board, it will not cause damage to the edge of the RF power amplifier board.

[0043] The elastic member includes a telescopic rod 52 fixedly connected between the thrust block 51 and the clamping plate 54 , and a spring 53 is sleeved on the telescopic rod 52 .

[0044] When the pressure plate 2 is pressed down, the driving rod 9 can be driven to move downward and inserted into the jack 12. The downward moving driving rod 9 can squeeze and drive the pressing piece, so that the pressing piece drives the driving block 43 to move downward on the vertical rod 41. The moving driving block 43 pulls the multiple push-pull rods 44, so that the push-pull rods 44 rotate around the hinge point and pulls the thrust block 51, so that the thrust block 51 drives the telescopic rod 52 and the splint 54 to move toward the RF power amplifier board, and then drives the splint 54 to push the RF power amplifier board against it. The RF power amplifier board is pushed to the center position of the placement slot 11 through the multiple splints 54. At this time, the RF power amplifier board is located directly below the multiple probe bodies 31, which saves people the time of manually adjusting the position of the RF power amplifier board. After the board is centered, the splint 54 can continuously resist and squeeze the RF power amplifier board, and then resist and fix it, thereby achieving rapid fixation of the RF power amplifier board and improving the fixing speed of the RF power amplifier board. At the same time, after fixation, the elastic probe part 3 can be prevented from being displaced during the resistance test of the RF power amplifier board, thereby improving the stability of the contact point of the elastic probe part 3 during the test and the accuracy of the test results. Here, with the continuous pushing of the thrust block 51, the splint 54 is in resistance with the RF power amplifier board. At this time, the distance between the thrust block 51 and the splint 54 is shortened. At this time, the driving force applied by the thrust block 51 is buffered by the elastic action of the spring three 53, thereby preventing the thrust block 51 from driving the splint 54 to excessively squeeze the RF power amplifier board and causing damage to it.

[0045] When the RF power amplifier board test is completed, the pressure plate 2 moves upward to drive the driving rod 9 to move upward. At this time, the pressure piece loses the resistance downward pressure of the driving rod 9. Under the elastic action of the spring 2 42, the driving block 43 can be pushed up, so that the driving block 43 moves upward, and then pushes the multiple push-pull rods 44, so that the push-pull rods 44 push the thrust block 51, and then push it back into the moving space, completing the resetting of the elastic fixing piece 5, so that the RF power amplifier board is released from the resistance fixed state, which is convenient for people to take out.

[0046] The remaining structures are the same as those of Example 1. Example 3

[0047] See also Figure 10 and Figure 11 , which is the third embodiment of the present invention. This embodiment is different from the first and second embodiments in that: the linkage member 7 includes a column 71 symmetrically connected in the inner cavity, the top of the column 71 is rotatably connected to a linkage rod 72, one side of the linkage rod 72 is rotatably connected to the shielding cover 8, and a sliding groove 73 is provided at the end of the linkage rod 72 away from the shielding cover 8.

[0048] The pressure piece includes a force-bearing plate 45 fixedly connected to the bottom end of one side of the driving block 43. The end of the force-bearing plate 45 away from the driving block 43 is fixedly connected to a slider 46. The slider 46 is slidably installed inside the slide groove 73. Here, one end of the force-bearing plate 45 is on the same axis as the socket 12 and the driving rod 9, and the force-bearing plate 45 can be driven by the driving rod 9.

[0049] When the pressure plate 2 drives the driving rod 9 to press down, the driving rod 9 drives the force-bearing plate 45, so that the force-bearing plate 45 moves downward, thereby driving the driving block 43 to move downward, driving the push-pull rod 44 and the elastic fixing member 5. At the same time, when the force-bearing plate 45 moves, it drives the slider 46 to move, so that the slider 46 slides inside the slide groove 73 and presses down one end of the linkage rod 72, so that the linkage rod 72 rotates on the column 71. At this time, the other end of the linkage rod 72 drives the shielding cover 8, so that the shielding cover 8 slides up and down inside the storage cavity 13 Start, move toward the direction of the pressure plate 2, when the pressure plate 2 drives the elastic probe part 3 to contact the RF power amplifier board, at this time, the shielding cover 8 is in contact with the pressure plate 2, and is closed by the fixing seat 1, the pressure plate 2 and the shielding cover 8, so that a closed space is formed at the placement groove 11, and the shielding cover 8 blocks the external electromagnetic waves, and cooperates with the fixing seat 1 and the pressure plate 2 to block the external electromagnetic waves, reducing the possibility of electromagnetic waves being transmitted into the placement groove 11, thereby reducing the interference of electromagnetic waves on the RF power amplifier board during testing, reducing the error of test data, and improving test accuracy.

[0050] When the RF power amplifier board test is completed, the pressure plate 2 moves upward to drive the driving rod 9 to move upward. At this time, the spring 2 42 pushes the driving block 43 to the top, and drives the force plate 45 to move upward, and then drives the slider 46 to lift one end of the linkage rod 72, so that the other end of the linkage rod 72 pulls down the shielding cover 8, and the shielding cover 8 can be retracted into the receiving cavity 13 to complete the reset.

[0051] The remaining structures are the same as those of Examples 1 and 2. Example 4

[0052] See also Figure 2 and Figure 6, which is the third embodiment of the present invention. This embodiment is different from the first, second and third embodiments in that: a control box 6 is fixedly connected to one side of the telescopic guide rod 14, and fan groups 21 are installed on both sides of the pressure plate 2. The control box 6 is electrically connected to the fan group 21. Here, an infrared sensor and a controller are provided inside the control box 6. The movement of the pressure plate 2 can be detected and sensed by the infrared sensor, and the opening and closing of the fan group 21 can be controlled by the controller. In addition, the position range of the detection and sensing of the control box 6 can be set in advance, and the position reached by pressing the pressure plate 2 to form contact and closure with the shielding cover 8 is set as the sensing position. When the pressure plate 2 reaches the set sensing range, it can be detected by the infrared sensor, and the fan group 21 is turned on by the controller. When the pressure plate 2 leaves the sensing range, the controller can control the fan group 21 to turn off.

[0053] Air guide cavities 22 are provided on both sides of the interior of the pressure plate 2, and the air guide cavities 22 are connected to the cavity. The fan group 21 is installed inside the air guide cavity 22, and a plurality of air guide ports 23 are provided at the bottom of the pressure plate 2, and the air guide ports 23 are connected to the cavity. An air inlet duct is formed by the air guide cavity 22, the cavity and the air guide ports 23, so that the fan group 21 blows air into the placement slot 11 to cool the contact part of the probe body 31 and the RF power amplifier board. Here, the air guide ports 23 are inclined. The inclined air guide ports 23 can first blow the airflow to the contact part of the probe body 31, and then blow it to the RF power amplifier board, giving priority to cooling the probe body 31 to prevent its temperature from rising too quickly and affecting signal transmission. A dustproof mesh plate 24 is fixedly connected to the end of the air guide cavity 22 away from the cavity. Here, the dustproof mesh plate 24 is woven with metal wire, which can block external dust and external electromagnetic waves at the same time, reducing the entry of electromagnetic waves.

[0054] The position of the pressure plate 2 can be sensed by the control box 6. When the fixing seat 1, the pressure plate 2 and the shielding cover 8 are closed, the pressure plate 2 reaches the sensing position. At this time, the control box 6 can turn on the fan group 21, so that the fan group 21 draws external air into the air guide cavity 22 to form wind force, and blows it into the cavity, and enters the placement groove 11 through the air guide port 23. When passing through the air guide port 23, the wind can be first guided to the probe body 31 to cool it down through the inclined structure of the air guide port 23. Then, the wind is naturally blown into the placement groove 11 to cool down the RF power amplifier board, thereby reducing the RF power amplifier board. During the test, the temperature of the component rises too quickly, which may affect the performance or cause damage, and the accuracy of the test is increased. At the same time, the probe body 31 is cooled and protected to prevent the probe body 31 from being slightly deformed by sudden high temperature conduction when in contact with the RF power amplifier board for testing, thereby avoiding affecting the transmission of signals during the test and improving the accuracy of the test. When the fan group 21 draws air from the outside, the air can pass through the dustproof mesh plate 24, and the dust in the air can be filtered through the dustproof mesh plate 24 to prevent dust from being placed in the slot 11, thereby reducing the possibility of dust falling on the RF power amplifier board and affecting the test accuracy.

[0055] When the RF power amplifier board test is completed, the pressure plate 2 rises and leaves the sensing range of the control box 6. At this time, the control box 6 can operate the fan group 21 to turn off, thereby stopping the wind transmission.

[0056] The remaining structures are the same as those of Examples 1, 2, and 3.

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A radio frequency power amplifier board test fixture, comprising a fixing seat (1), characterized in that: A symmetrical telescopic guide rod (14) is fixedly connected to one side of the top of the fixing seat (1), a pressing plate (2) is fixedly connected to the top of the telescopic guide rod (14), an electric push rod (15) is fixedly connected between the fixing seat (1) and the pressing plate (2), a placement slot (11) is provided on the top of the fixing seat (1), a plurality of elastic probe members (3) are mounted on the pressing plate (2), and an external box (25) is fixedly connected to the top of the pressing plate (2), one end of the elastic probe member (3) is connected to the external box (25), both sides of the bottom of the pressing plate (2) are fixedly connected to driving rods (9), and the interior of the fixing seat (1) is provided with a placement slot (11). There is an inner cavity, a transmission component (4) is fixedly connected to the inner cavity, a socket (12) is provided on both sides of the fixing seat (1), the socket (12) is communicated with the inner cavity, elastic fixing members (5) are installed on the four sides of the interior of the placement groove (11), the transmission component (4) is transmission-connected to the elastic fixing member (5), a linkage member (7) is installed on both sides of the interior of the inner cavity, the linkage member (7) is transmission-connected to the transmission component (4), a storage cavity (13) is provided on the fixing seat (1), a shielding cover (8) is slidably connected to the interior of the storage cavity (13), and the linkage member (7) is transmission-connected to the shielding cover (8); The electric push rod (15) drives the pressing plate (2) to press downward toward the fixing seat (1), and the pressing plate (2) drives the driving rod (9) to be inserted into the jack (12) and drives the transmission component (4), thereby driving the elastic fixing member (5) to contact and fix the radio frequency power amplifier board. At this time, the transmission component (4) synchronously drives the linkage member (7) to lift the shielding cover (8) so that it contacts the pressing plate (2) and forms a seal on the placement groove (11). At the same time, the moving pressing plate (2) drives the elastic probe member (3) to contact the radio frequency power amplifier board, thereby completing the fixation of the radio frequency power amplifier board.

2. The RF power amplifier board test fixture according to claim 1, characterized in that: A control box (6) is fixedly connected to one side of the telescopic guide rod (14), and fan groups (21) are installed on both sides of the pressure plate (2), and the control box (6) is electrically connected to the fan group (21).

3. The RF power amplifier board test fixture according to claim 1, characterized in that: A cavity is provided inside the pressure plate (2), and the elastic probe member (3) includes a probe body (31) slidably connected to the inside of the pressure plate (2). The probe body (31) is fixedly connected to a limit plate (32), and a spring (34) is sleeved on the probe body (31). An end of the probe body (31) away from the limit plate (32) is fixedly connected to a connecting wire (33), and an end of the connecting wire (33) away from the probe body (31) is connected to an external box (25).

4. The RF power amplifier board test fixture according to claim 2, characterized in that: Air guide cavities (22) are provided on both sides of the interior of the pressure plate (2), and the air guide cavities (22) are communicated with the cavity of the pressure plate (2). The fan group (21) is installed inside the air guide cavity (22). A plurality of air guide ports (23) are provided at the bottom of the pressure plate (2), and the air guide ports (23) are communicated with the cavity. A dustproof screen (24) is fixedly connected to one end of the air guide cavity (22) away from the cavity.

5. The RF power amplifier board test fixture according to claim 1, characterized in that: The transmission assembly (4) comprises a vertical rod (41) fixedly connected in the inner cavity, a driving member is slidably mounted on the vertical rod (41), and a second spring (42) is sleeved on the vertical rod (41), and the second spring (42) is located below the driving member.

6. The RF power amplifier board test fixture according to claim 5, characterized in that: The driving member includes a driving block (43) connected to the vertical rod (41), the four sides of the driving block (43) are rotatably connected to push-pull rods (44), one end of the push-pull rod (44) away from the driving block (43) is rotatably connected to the elastic fixing member (5), and the bottom ends of the four sides of the driving block (43) are all equipped with pressing members, and the pressing members are transmission-connected to the linkage member (7).

7. The RF power amplifier board test fixture according to claim 6, characterized in that: The elastic fixing member (5) includes a thrust block (51) slidably mounted on one side of the interior of the fixing seat (1), one side of the thrust block (51) is fixedly connected to mutually symmetrical elastic members, and one end of the elastic member away from the thrust block (51) is fixedly connected to a clamping plate (54), and the clamping plate (54) is located on the inner side of the placement groove (11), and the bottom of the thrust block (51) is rotatably connected to the push-pull rod (44).

8. The RF power amplifier board test fixture according to claim 7, characterized in that: The elastic member comprises a telescopic rod (52) fixedly connected between the thrust block (51) and the clamping plate (54), and a spring three (53) is sleeved on the telescopic rod (52).

9. The RF power amplifier board test fixture according to claim 8, characterized in that: The linkage member (7) comprises a column (71) symmetrically connected in the inner cavity, the top end of the column (71) is rotatably connected to a linkage rod (72), one side of the linkage rod (72) is rotatably connected to the shielding cover (8), and a sliding groove (73) is provided at one end of the linkage rod (72) away from the shielding cover (8).

10. The RF power amplifier board test fixture according to claim 9, characterized in that: The pressing member includes a force-bearing plate (45) fixedly connected to the bottom end of one side of the driving block (43), and a slider (46) is fixedly connected to one end of the force-bearing plate (45) away from the driving block (43), and the slider (46) is slidably installed inside the slide groove (73).

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