Test fixture for multichannel radio frequency transceiver assembly

Abstract

The invention relates to the field of phased array systems, and discloses a test fixture for a multi-channel radio frequency transceiver component, which comprises an upper mounting plate, a lower mounting plate, an unloading mechanism and a driving mechanism, and is characterized in that the upper mounting plate is connected to an equipment table in a manner of moving up and down; the lower mounting plate is connected to the equipment table; the driving mechanism is connected to the upper mounting plate; the unloading mechanism is mounted on the equipment table, the driving mechanism drives the upper mounting plate to ascend, and the unloading mechanism jacks the tested product to be separated from the lower mounting plate. The device has the beneficial effects that the unloading mechanism and the main driving mechanism are arranged in a linkage mode, the jacking action is automatically driven while the upper mounting plate ascends, huge accumulated insertion and extraction force and the vacuum adsorption effect are directly overcome through stable and vertical mechanical jacking force, the connector is separated from the lower connecting plate, and the connector is prevented from being damaged. The damage to the contact pin of the connector and the scratch to the appearance of the product caused by barbaric operation such as using a crow bar are fundamentally avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of phased array systems, in particular to a test fixture of a multi-channel radio frequency transceiver assembly. BACKGROUND

[0002] The rapid development of phased array radars, new generation communication systems and electronic countermeasure equipment puts extreme requirements on the performance and mass production efficiency of multi-channel radio frequency transceiver assemblies. The performance of modern phased array systems with tens of thousands of channels highly depends on the consistency of the amplitudes and phases of each channel.

[0003] Currently, a dedicated fixture is used to realize the synchronous plugging of multiple radio frequency connectors. However, when the assembly containing dozens or even hundreds of radio frequency connectors is completed with plugging and testing on the test fixture, the unloading process faces great challenges. First, the dense connectors will generate a huge cumulative plugging force, and the vacuum adsorption effect formed by the connector interface makes the product and the test fixture tightly combined, with great separation resistance. The operator often needs to spend a lot of physical strength, or even use a crowbar to forcibly separate the product. This rough unloading method has a high risk: on the one hand, it is easy to cause the bending, breaking of the high-value radio frequency connector pins, or the damage of the shell, causing serious property loss and production interruption; on the other hand, it is also easy to produce scratches on the precise appearance of the product, affecting its final quality.

[0004] Currently, an independent jacking screw mechanism is used, which can provide jacking force, but the operator needs to perform an additional operation step after completing the main plugging action, which is cumbersome. If an external power source (such as a cylinder or motor) is used to drive the jacking, it significantly increases the cost, complexity and space occupation of the fixture, and introduces additional failure points, reducing the overall reliability of the system. SUMMARY

[0005] The technical problem to be solved by the present application is that the current dedicated fixture may damage the product and the connector when separating the product and the connector, and the separation process is cumbersome. The purpose is to provide a test fixture of a multi-channel radio frequency transceiver assembly, which automatically drives the unloading mechanism to jacking when the upper mounting plate rises, separating the connector from the lower mounting plate.

[0006] The present application is implemented by the following technical solutions:

[0007] A test fixture of a multi-channel radio frequency transceiver assembly, comprising an upper mounting plate, a lower mounting plate, an unloading mechanism and a driving mechanism, the upper mounting plate is movably connected to the equipment table; the lower mounting plate is connected to the equipment table; the driving mechanism is connected to the upper mounting plate; the unloading mechanism is installed on the equipment table, and the driving mechanism drives the upper mounting plate to rise, and the unloading mechanism jacks the tested product to separate from the lower mounting plate.

[0008] The beneficial effects of this invention are that by linking the unloading mechanism with the main drive mechanism, the lifting action is automatically driven while the upper mounting plate rises. The stable and vertical mechanical lifting force directly overcomes the huge cumulative insertion and extraction force and vacuum adsorption effect, separating the connector from the lower connecting plate. This fundamentally avoids damage to the connector pins and scratches on the product appearance caused by rough handling such as using pry bars. At the same time, this linkage design does not require additional steps or external power sources from the operator. While ensuring unloading reliability, it significantly improves operating efficiency and maintains the simplicity and cost-effectiveness of the fixture structure.

[0009] In some embodiments, the unloading mechanism includes a tray and a motion conversion mechanism. The tray is connected above the lower mounting plate, and the motion conversion mechanism is connected between the upper mounting plate and the tray. The motion conversion mechanism converts the linear motion of the upper mounting plate into a lifting motion of the tray. The kinetic and potential energy of the upper mounting plate's separation motion is converted into an upward lifting force on the tray by the motion conversion mechanism, thus mechanizing the unloading process and providing a smooth and controllable lifting action. This fundamentally avoids the impact and lateral stress caused by manual prying, thereby maximizing the protection of the product and connector while achieving automated unloading.

[0010] In some embodiments, the motion conversion mechanism is a Geneva wheel assembly, which includes a support, a Geneva wheel, a first connecting rod, and a second connecting rod. The Geneva wheel is rotatably connected to the side of the equipment platform away from the lower mounting plate via a pivot. The upper end of the first connecting rod is hinged to the support, which is connected to the lower end of the upper mounting plate. The lower end of the first connecting rod is provided with a pull pin, which is embedded in a radial curved groove on the outer periphery of the Geneva wheel and can slide along the curved groove. One end of the second connecting rod is hinged to the disc surface of the Geneva wheel at an eccentric position away from its rotation center, and the other end is hinged to the support plate. By engaging the first link with the curved groove of the grooved wheel, the smooth upward motion of the upper mounting plate can be transformed into the intermittent, force-amplifying rotational motion of the grooved wheel. The second link then converts this rotational motion into the vertical lifting motion of the pallet. The upward movement of the pallet easily disengages the product connector from the lower mounting plate, preventing product damage and connector failure due to excessive insertion and extraction forces. This not only provides significant mechanical gain, allowing operators to lift heavy products with minimal force, but also, through the contour design of the curved groove, provides greater force at the initial lifting stage to overcome vacuum adhesion, achieving optimal force and stroke distribution during the unloading process.

[0011] In some embodiments, the Geneva assembly further includes a torsion spring and a second pin. The first connecting rod is hinged to the support via the second pin. The torsion spring is sleeved on the second pin, with its two ends abutting against the support and the first connecting rod, respectively. By providing the torsion spring, it is ensured that after the first connecting rod disengages from the Geneva curve groove, it can quickly and reliably return to the initial vertical standby position. This ensures that the first connecting rod can accurately re-enter the curve groove during the next insertion / removal cycle, thereby improving the smoothness of equipment operation, the reliability of cyclic use, and the degree of automation, and avoiding mechanism jamming or operational failure due to the connecting rod failing to reset.

[0012] In some embodiments, at least two guide rails are further included, both of which are vertically disposed on one side of the equipment platform. Both the upper mounting plate and the tray can move up and down along the guide rails. By setting the guide rails, precise vertical guidance is provided for the movement of the upper mounting plate and the tray, ensuring that the entire insertion, removal, and lifting process is carried out on a strictly straight trajectory. This completely eliminates the risk of lateral swaying or jamming, protects the delicate RF connectors, ensuring that they are always inserted and removed in an aligned state, preventing damage due to misalignment, and also ensures the vertical application of the lifting force, making the unloading action more efficient and reliable.

[0013] In some embodiments, the drive mechanism includes a handle, a U-shaped block, and a slide rod. A vertically arranged second support is connected to the top of the equipment platform. The second support has a U-shaped cross-section, and a first axle pin is horizontally connected to the top of the second support. The handle is L-shaped, with its horizontal free end hinged to the first axle pin. The right-angle end of the handle is hinged to the upper end of the U-shaped block, and the lower end of the U-shaped block is hinged to the upper end of the slide rod. The lower end of the slide rod is connected to the upper mounting plate. This mechanism facilitates the conversion of the relatively large but effortless rotational motion applied by the operator's hand on the handle into a shorter but more powerful linear motion required by the upper mounting plate via the U-shaped block and slide rod. This allows a single person to easily operate a fixture with dozens or even hundreds of connectors, greatly reducing the operator's labor intensity and enabling efficient single-person operation.

[0014] In some embodiments, the drive mechanism further includes a sleeve vertically connected to the lower end of the second bracket, and the slide rod can slide along the inner side of the sleeve. By providing the sleeve with additional support and guidance for the slide rod, a stable two-point support structure (sleeve and connection point with the upper mounting plate) is formed, improving the rigidity and stability of the slide rod and even the entire upper mounting plate during movement, preventing swaying or deformation caused by excessive cantilever length, and further ensuring the accuracy and smoothness of the insertion and removal process.

[0015] In some embodiments, the system further includes several floating connector assemblies, each connected to the lower end of the upper mounting plate. Each floating connector assembly includes a crown spring, an RF connector, and an adapter. The RF connector has two elliptical slots within its flange, in which a crown spring is installed. Screws pass sequentially through the upper mounting plate and the corresponding crown spring to connect to the RF connector. The adapter is connected to the lower end of the RF connector. In operation, the adapter maintains a pre-compression elasticity with the product. The elastic deformation of the crown spring imparts radial and axial floating capability to the connector. This adaptive compensation mechanism automatically absorbs and compensates for micro-machining and assembly errors between the product and the fixture, ensuring that all connectors are evenly stressed and smoothly guided during insertion and removal. This completely solves the industry problem of misalignment, inability to insert, or excessive stress in individual channels caused by accumulated errors in multi-channel connectors, greatly improving the success rate and safety of the connection.

[0016] In some embodiments, the lower mounting plate is made of a high thermal conductivity aluminum alloy, and a flow channel is provided within the lower mounting plate. A fluid interface is provided on the lower mounting plate, communicating with the flow channel and connected to a cooling water pump. This provides efficient and active heat dissipation for high-power RF transceiver components under test, enabling timely removal of heat generated by the chip (up to several kilowatts), ensuring that the product under test will not experience performance degradation or damage due to overheating during testing. This guarantees the accuracy and reliability of test data and expands the fixture's testing capabilities for high-power products.

[0017] In some embodiments, a first guide pin is mounted on the upper mounting plate, and a second guide pin is mounted on the lower mounting plate. Both the first and second guide pins are used to mate with positioning holes on the product under test. By providing guide pins on both the upper and lower mounting plates, a coarse positioning system is formed, ensuring that the product is in a roughly correct position during placement. This lays the foundation for the subsequent precise alignment of the floating connector, prevents damage caused by mis-insertion due to the product being placed upside down, and further improves the success rate and efficiency of automatic mating.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] 1. By engaging the first connecting rod with the curved groove of the grooved wheel, the smooth upward motion of the upper mounting plate can be transformed into the intermittent, force-increasing rotational motion of the grooved wheel. The second connecting rod then converts this rotational motion into the vertical lifting motion of the pallet, separating the product connector from the lower mounting plate. This not only provides a huge mechanical gain, allowing the operator to lift heavy products with less force, but also, through the contour design of the curved groove, provides greater force at the beginning of the lifting phase to overcome vacuum adhesion, achieving optimal distribution of force and stroke during the unloading process.

[0020] 2. By utilizing the elastic deformation of the crown spring, the connector is given the ability to float in the radial and axial directions. This adaptive compensation mechanism can automatically absorb and compensate for the micro-processing errors and assembly errors between the product and the fixture, ensuring that all connectors are evenly stressed and smoothly guided during insertion and removal. This completely solves the industry problem of individual channels being misaligned, unable to be inserted, or experiencing excessive stress due to the accumulation of errors in multi-channel connectors, greatly improving the success rate and safety of the connection. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0022] Figure 1 This is a structural diagram of the present invention;

[0023] Figure 2 This is another visual representation of the external structure of the present invention;

[0024] Figure 3 This is a partial structural diagram of the present invention;

[0025] Figure 4 This is a structural diagram of the grooved wheel assembly in this invention;

[0026] Figure 5 This is an exploded view of the Geneva assembly in this invention;

[0027] Figure 6 This is an exploded view of the floating connector assembly in this invention;

[0028] Figure 7 This is a cross-sectional view of the floating connector assembly in this invention.

[0029] The attached diagram shows the markings and corresponding component names:

[0030] Equipment platform 1, Grooved wheel assembly 2, Floating connector assembly 3, First guide pin 4, Upper mounting plate 5, Second guide pin 6, Pad 7, Lower mounting plate 8, First bracket 9, Fluid interface 10, RF connector 11, Support plate 12, Back plate 101, Guide rail 102, Second bracket 103, First shaft pin 104, First cotter pin 105, U-block 106, Slide rod 107, Handle 108, Base plate 109, Fixing plate 110, Third bracket 111, Grooved wheel assembly 2, Support 201, First connecting rod 202, Grooved wheel 203, Second connecting rod 204, Torsion spring 205, Second cotter pin 206, Second shaft pin 207, Floating connector assembly 3, Crown spring 301, RF connector 302, Adapter 303. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0032] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the invention. Therefore, the phrases "an embodiment," "an example," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] In the description of this invention, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0034] The terms "first," "second," etc., used in this invention are merely for clarity of description and are not intended to limit any order or emphasize importance. Furthermore, the term "connection" as used herein, unless otherwise specified, can refer to a direct connection or an indirect connection via other components.

[0035] Example

[0036] like Figures 1-7 As shown, this embodiment provides a test fixture for a multi-channel RF transceiver assembly, including an upper mounting plate 5, a lower mounting plate 8, an unloading mechanism, and a drive mechanism. The upper mounting plate 5 is vertically movably connected to the equipment table 1; the lower mounting plate 8 is connected to the equipment table 1; the drive mechanism is connected to the upper mounting plate 5; the unloading mechanism is mounted on the equipment table 1. When the drive mechanism drives the upper mounting plate 5 to rise, the unloading mechanism lifts the product under test and disengages it from the lower mounting plate 8. By linking the unloading mechanism with the main drive mechanism, the lifting action is automatically driven while the upper mounting plate 5 rises. The stable and vertical mechanical lifting force directly overcomes the huge cumulative insertion and extraction forces and vacuum adsorption effect, fundamentally avoiding damage to connector pins and scratches on the product appearance caused by rough handling such as using pry bars. At the same time, this linkage design requires no additional steps or external power source from the operator, significantly improving operating efficiency while ensuring unloading reliability and maintaining the simplicity and cost-effectiveness of the fixture structure.

[0037] See Figures 1-5 The unloading mechanism includes a pallet 12 and a motion conversion mechanism. The pallet 12 is connected above the lower mounting plate 8, and the motion conversion mechanism is connected between the upper mounting plate 5 and the pallet 12. The motion conversion mechanism converts the linear motion of the upper mounting plate 5 into the lifting motion of the pallet 12. The kinetic and potential energy of the separation motion of the upper mounting plate 5 is converted into an upward lifting force on the pallet 12 through the motion conversion mechanism, realizing mechanized unloading and providing a smooth and controllable lifting action. This fundamentally avoids the impact and lateral stress caused by manual prying, thereby maximizing the protection of the product and connector while achieving automated unloading.

[0038] See Figure 1 and Figure 2 It also includes a first bracket 9, which is connected to the lower end of the lower mounting plate 8 to support the lower mounting plate 8. The equipment platform 1 is vertically mounted at one end of the base plate 109, and the bottom of the first bracket 9 is located at the upper end of the base plate 109.

[0039] See Figures 1-5The motion conversion mechanism is a Geneva wheel assembly 2, which includes a support 201, a Geneva wheel 203, a first connecting rod 202, and a second connecting rod 204. The Geneva wheel 203 is rotatably connected to the side of the equipment platform 1 away from the lower mounting plate 8 via a rotating shaft. The upper end of the first connecting rod 202 is hinged to the support 201, and the support 201 is connected to the lower end of the upper mounting plate 5. The lower end of the first connecting rod 202 is provided with a pull pin, which is embedded in the radial curved groove on the outer periphery of the Geneva wheel 203 and can slide along the curved groove. One end of the second connecting rod 204 is hinged to the disc surface of the Geneva wheel 203 at an eccentric position away from its rotation center, and the other end is hinged to the support plate 12. By engaging the first link 202 with the curved groove of the grooved wheel 203, the smooth upward motion of the upper mounting plate 5 can be transformed into the intermittent, force-enhancing rotational motion of the grooved wheel 203. The second link 204 then converts this rotational motion into the vertical lifting motion of the pallet 12. This not only provides a huge mechanical gain, allowing the operator to lift heavy products with less force, but also, through the contour design of the curved groove, provides greater force at the beginning of the lifting process to overcome vacuum adhesion, achieving the optimal distribution of force and stroke during the unloading process.

[0040] See Figure 3 The Geneva wheel assembly 2 includes at least two, and a third bracket 111 is also provided on the side of the equipment platform 1 away from the side where the upper mounting plate 5 is installed. The Geneva wheel 203 is hinged to the third bracket 111. A fixing plate 110 is connected between the outer sides of the two third brackets 111.

[0041] See Figures 1-5 The grooved wheel assembly 2 further includes a torsion spring 205 and a second pin 207. The first connecting rod 202 is hinged to the support 201 via the second pin 207. The torsion spring 205 is sleeved on the second pin 207, with its two ends abutting against the support 201 and the first connecting rod 202, respectively. By setting the torsion spring 205, it is ensured that after the first connecting rod 202 disengages from the curved groove of the grooved wheel 203, it can quickly and reliably return to the initial vertical standby position. This ensures that during the next insertion and removal cycle, the first connecting rod 202 can accurately re-enter the curved groove, thereby improving the smoothness of operation, the reliability of cyclic use, and the degree of automation of the equipment, and avoiding mechanism jamming or operational failure due to the connecting rod failing to reset.

[0042] Specifically, the grooved wheel assembly 2 further includes a second cotter pin 206, which is inserted into the small end of the second shaft pin 207 to detachably connect the second shaft pin 207 to the support 201.

[0043] See Figures 1-3It also includes at least two guide rails 102, which are vertically arranged on one side of the equipment platform 1. Both the upper mounting plate 5 and the tray 12 can move up and down along the guide rails 102. By setting the guide rails 102, precise vertical guidance is provided for the movement of the upper mounting plate 5 and the tray 12, ensuring that the entire insertion, removal, and lifting process is carried out on a strictly straight trajectory, completely eliminating the risk of lateral swaying or jamming, protecting the delicate RF connector 11, ensuring that it is always inserted and removed in an aligned state, preventing damage due to misalignment, and also ensuring the vertical application of the lifting force, making the unloading action more efficient and reliable.

[0044] See Figures 1-5 The driving mechanism includes a handle 108, a U-shaped block 106, and a slide rod 107. A vertically arranged second support 103 is connected to the top of the equipment platform 1. The cross-section of the second support 103 is U-shaped. A first shaft pin 104 is horizontally connected to the top of the second support 103. The handle 108 is L-shaped. The free end of the horizontal part of the handle 108 is hinged to the first shaft pin 104. The right angle of the handle 108 is hinged to the upper end of the U-shaped block 106. The lower end of the U-shaped block 106 is hinged to the upper end of the slide rod 107. The lower end of the slide rod 107 is connected to the upper mounting plate 5. The U-shaped block 106 and slide bar 107 facilitate the conversion of the large-amplitude but labor-saving rotational motion applied by the operator's hand on the handle 108 into the short-stroke but powerful linear motion required by the upper mounting plate 5. This allows a single person to easily operate the fixture with dozens or even hundreds of connectors, greatly reducing the operator's labor intensity and achieving efficient single-person operation. The product is placed on the lower mounting plate 8, positioned by the second guide pin 6, and pre-fitted with the floating connector assembly 3 on the lower mounting plate 8 by gravity. Rotating the handle 108 downwards causes the upper mounting plate 5 to move downwards, aligning the product via the first guide pin 4. The floating connector assembly 3 then mates with the product interface. Subsequent testing transmits signals through the floating connector assembly 3 to the RF connector 11 mounted on the back plate 101, and then inputs the signals to instruments such as a vector network analyzer, frequency source, and switch matrix.

[0045] Specifically, the drive mechanism further includes a first cotter pin 105, and the third bracket 111 connects to the small end of the first pin 104 to connect the first pin 104 to the second bracket 103. Several pads 7 are also installed on the lower mounting plate 8 to protect the product and prevent scratches and damage to the product coating.

[0046] See Figures 1-5The driving mechanism also includes a sleeve, which is vertically connected to the lower end of the second bracket 103. The slide rod 107 can slide along the inner side of the sleeve. By setting the sleeve, additional support and guidance are provided for the slide rod 107, forming a stable two-point support structure (sleeve and connection point with the upper mounting plate 5), improving the rigidity and stability of the slide rod 107 and even the entire upper mounting plate 5 during movement, preventing swaying or deformation caused by excessive cantilever length, and further ensuring the accuracy and smoothness of the insertion and removal process.

[0047] See Figures 1-7 The system also includes several floating connector assemblies 3, each connected to the lower end of the upper mounting plate 5. Each floating connector assembly 3 includes a crown spring 301, an RF connector 11, and an adapter 303. The RF connector 11 has two elliptical slots within its flange, where the crown spring 301 is installed. Screws pass sequentially through the upper mounting plate 5 and the corresponding crown spring 301 before connecting to the RF connector 11. The adapter 303 is connected to the lower end of the RF connector 11. In operation, the adapter 303 maintains a pre-compression elasticity with the product. The elastic deformation of the crown spring 301 provides the connector with radial and axial floating capabilities. This adaptive compensation mechanism automatically absorbs and compensates for micro-machining and assembly errors between the product and the fixture, ensuring that all connectors are evenly stressed and smoothly guided during insertion and removal. This completely solves the industry problem of misalignment, inability to insert, or excessive stress in individual channels caused by accumulated errors in multi-channel connectors, greatly improving the success rate and safety of the connection.

[0048] See Figures 1-3 The lower mounting plate 8 is made of high thermal conductivity aluminum alloy. A flow channel is provided within the lower mounting plate 8, and a fluid interface 10 is provided on the lower mounting plate 8. The fluid interface 10 communicates with the flow channel and is connected to a cooling water pump. This provides efficient and active heat dissipation for high-power RF transceiver components under test, enabling timely removal of heat generated by the chip (up to several kilowatts). This ensures that the product under test will not experience performance degradation or damage due to overheating during testing, thereby guaranteeing the accuracy and reliability of test data and expanding the fixture's testing capabilities for high-power products.

[0049] See Figures 1-3 The upper mounting plate 5 is equipped with a first guide pin 4, and the lower mounting plate 8 is equipped with a second guide pin 6. Both the first guide pin 4 and the second guide pin 6 are used to mate with the positioning holes on the product under test. By providing guide pins on both the upper and lower mounting plates 8, a coarse positioning system is formed, ensuring that the product is in a roughly correct position during the placement stage. This lays the foundation for the subsequent precise alignment of the floating connector, prevents damage caused by mis-insertion due to the product being placed upside down, and further improves the success rate and efficiency of automatic mating.

[0050] When unloading the product after testing, the operator lifts handle 108 upwards. Handle 108 moves upwards, causing the upper mounting plate 5 to rise synchronously via a transmission mechanism. The rise of the upper mounting plate 5 causes the floating connector assembly 3 on it to detach from the product first. Simultaneously, the support 201 fixed to the upper mounting plate 5 rises, causing the first connecting rod 202 to move upwards. The pull pin at the lower end of the first connecting rod 202 slides within the curved groove of the grooved wheel 203, driving the grooved wheel 203 to rotate around its axis. The rotation of the grooved wheel 203 drives the movement of the second connecting rod 204, which is eccentrically hinged to it. The second connecting rod 204 converts the rotational motion of the grooved wheel 203 into an upward thrust, acting on the support plate 12, causing the support plate 12 to smoothly rise upwards along the guide rail 102. The support plate 12 supports the bottom of the product, lifting it as a whole, forcing the product to completely and smoothly separate from the floating connector assembly 3 on the lower mounting plate 8, perfectly overcoming vacuum suction and enormous insertion and extraction forces. When the upper mounting plate 5 rises to its highest point, the pull pin of the first connecting rod 202 slides out of the curved groove and quickly returns to a vertical position under the action of the torsion spring 205, preparing for the next operation. At this time, the product has been completely lifted and disengaged from all connections, and the operator can easily remove it.

[0051] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A test fixture for a multi-channel radio frequency transceiver assembly, characterized in that, include: An upper mounting plate, which is vertically movable and connected to the equipment platform; A lower mounting plate is connected to the equipment platform; A drive mechanism is connected to the upper mounting plate; An unloading mechanism is installed on the equipment platform. When the drive mechanism causes the upper mounting plate to rise, the unloading mechanism lifts the product under test and disengages it from the lower mounting plate.

2. The test fixture for the multi-channel RF transceiver assembly according to claim 1, characterized in that, The unloading mechanism includes a pallet and a motion conversion mechanism. The pallet is connected above the lower mounting plate, and the motion conversion mechanism is connected between the upper mounting plate and the pallet. The motion conversion mechanism converts the linear motion of the upper mounting plate into the lifting motion of the pallet.

3. The test fixture for the multi-channel RF transceiver assembly according to claim 2, characterized in that, The motion conversion mechanism is a Geneva wheel assembly, which includes a support, a Geneva wheel, a first connecting rod, and a second connecting rod. The Geneva wheel is rotatably connected to the side of the equipment platform away from the lower mounting plate via a rotating shaft. The upper end of the first connecting rod is hinged to the support, and the support is connected to the lower end of the upper mounting plate. The lower end of the first connecting rod is provided with a pull pin, which is embedded in a radial curved groove on the outer periphery of the Geneva wheel and can slide along the curved groove. One end of the second connecting rod is hinged to the disc surface of the Geneva wheel at an eccentric position away from its rotation center, and the other end is hinged to the support plate.

4. The test fixture for the multi-channel RF transceiver assembly according to claim 3, characterized in that, The grooved wheel assembly also includes a torsion spring and a second axle pin. The first connecting rod is hinged to the support via the second axle pin. The torsion spring is sleeved on the second axle pin, with its two ends abutting against the support and the first connecting rod, respectively.

5. The test fixture for the multi-channel RF transceiver assembly according to claim 2, characterized in that, It also includes at least two guide rails, which are vertically arranged on one side of the equipment platform, and the upper mounting plate and the tray can both move up and down along the guide rails.

6. The test fixture for the multi-channel RF transceiver assembly according to claim 1, characterized in that, The drive mechanism includes a handle, a U-shaped block, and a slide rod. A vertically arranged second bracket is connected to the top of the equipment platform. The second bracket has a U-shaped cross-section. A first axle pin is horizontally connected to the top of the second bracket. The handle is L-shaped. The free end of the horizontal part of the handle is hinged to the first axle pin. The right angle of the handle is hinged to the upper end of the U-shaped block. The lower end of the U-shaped block is hinged to the upper end of the slide rod. The lower end of the slide rod is connected to the upper mounting plate.

7. The test fixture for the multi-channel RF transceiver assembly according to claim 6, characterized in that, The driving mechanism also includes a sleeve, which is vertically connected to the lower end of the second bracket, and the slide rod can slide along the inner side of the sleeve.

8. The test fixture for the multi-channel RF transceiver assembly according to claim 1, characterized in that, It also includes several floating connector assemblies, all of which are connected to the lower end of the upper mounting plate. Each floating connector assembly includes a crown spring, an RF connector, and an adapter. The RF connector has two elliptical slots in its flange, and a crown spring is installed in each elliptical slot. A screw passes through the upper mounting plate and the corresponding crown spring in sequence and then connects to the RF connector. The adapter is connected to the lower end of the RF connector. In the working state, the adapter maintains a pre-compression elasticity with the product.

9. The test fixture for a multi-channel RF transceiver assembly according to any one of claims 1-8, characterized in that, The lower mounting plate is made of high thermal conductivity aluminum alloy. A flow channel is provided inside the lower mounting plate, and a fluid interface is provided on the lower mounting plate. The fluid interface communicates with the flow channel and is connected to the chilled water pump.

10. The test fixture for the multi-channel RF transceiver assembly according to any one of claims 1-8, characterized in that, A first guide pin is mounted on the upper mounting plate, and a second guide pin is mounted on the lower mounting plate. Both the first and second guide pins are used to mate with positioning holes on the product under test.

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