CN212569049U - PCB test module - Google Patents

Abstract

The utility model provides a PCB test module, including dismouting operating parts and independent each other and between the dismantled and assembled support body and probe module together dismantled and assembled. The probe module comprises an assembly mold core which is detachably assembled with the frame body and a probe which penetrates through the assembly mold core, two tail ends of the probe are respectively exposed and arranged, the disassembling and assembling operation piece is assembled on one of the frame body and the assembly mold core, the other one of the frame body and the assembly mold core is provided with a matching and locking structure, and the disassembling and assembling operation piece is selectively in locking connection or unlocking connection with the matching and locking structure so as to correspondingly block or separate the probe module from being disassembled and assembled on the frame body. The utility model discloses a dismouting between probe module and the support body can be realized to PCB test module to the quick assembly disassembly and the change operation of probe module, with reduce cost and improvement compatibility.

Description

PCB test module

Technical Field

The utility model relates to a PCB (printed circuit board promptly) functional test field especially relates to a PCB test module for PCB functional test.

Background

Pcb (printed circuit board), one of the important components in the electronics industry. Printed circuit boards are used, whether as small as, for example, electronic watches and calculators, or as large as computers, communications electronics, military weaponry systems, etc., so long as they are used with electronic components such as integrated circuits. The printed circuit board can replace complex wiring to realize the electrical connection among elements in the circuit, so the assembly and welding work of electronic products can be simplified, the wiring workload in the traditional mode can be reduced, and the labor intensity of workers can be greatly reduced; and the volume of the whole machine is reduced, the product cost is reduced, and the quality and the reliability of the electronic equipment are improved. Meanwhile, the printed circuit board has good product consistency, can adopt standardized design, and is beneficial to realizing mechanization and automation in the production process. Moreover, the whole printed circuit board after assembly and debugging can be used as an independent spare part, so that the exchange and maintenance of the whole machine product are facilitated. Therefore, printed circuit boards have been used very widely in the production and manufacture of electronic products.

In the production process of the printed circuit board, various performance tests of the printed circuit board cannot be separated. The existing test tool for testing the printed circuit board comprises a frame body and a plurality of probes, wherein the frame body is used for being locked on an external test base station, the probes are arranged on the frame body in a matrix manner, the frame body comprises an upper frame body and a lower frame body which are fixedly covered, and the upper frame body and the lower frame body are respectively provided with a penetrating hole for independently penetrating and fixing each probe; therefore, in the process of probe assembly, each probe is firstly inserted into a corresponding insertion hole on the upper frame body or the lower frame body, and then the upper frame body and the lower frame body are combined and fixed together, so that each probe is fixed on the frame body.

However, when the function test is performed on the printed circuit boards of different models and types, the differences of the number, size, arrangement position and the like of the probes exist, and the size of the rack body is generally kept unchanged as the rack body is fixedly locked on the external test base station; therefore, in order to satisfy the function test of different types and kinds of printed circuit boards, the test tool is designed into various types due to the difference of the number, size and arrangement position of the probes, so that the defects of high compatibility, high cost and inconvenient use and operation are overcome.

Therefore, a PCB testing module with good compatibility, low cost and convenient operation is urgently needed to overcome the above-mentioned defects.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compatible good, with low costs and use convenient operation's PCB test module.

In order to achieve the above object, the PCB testing module of the present invention includes a detachable operating member, and a frame and a probe module which are independent of each other and detachably assembled together. The probe module comprises an assembly mold core which is detachably assembled with the frame body and a probe which penetrates through the assembly mold core, two tail ends of the probe are respectively exposed and arranged, the disassembling and assembling operation piece is assembled on one of the frame body and the assembly mold core, the other one of the frame body and the assembly mold core is provided with a matching and locking structure, and the disassembling and assembling operation piece is selectively in locking connection or unlocking connection with the matching and locking structure so as to correspondingly block or separate the probe module from being disassembled and assembled on the frame body.

Preferably, the dismounting operation member includes an exposed operation portion and a plugging core connected to the operation portion and driven by the operation portion to slide along the left and right directions or the front and back directions of the frame body, and the lock-matching structure is a slot structure for plugging the plugging core.

Preferably, a positioning structure protrudes from the front side and/or the rear side of the assembly mold core, the insertion and extraction core is slidably disposed on the positioning structure along the left and right directions of the frame body, the operation portion is disposed on the positioning structure, the frame body is provided with an insertion matching cavity for the assembly mold core to be inserted and assembled, a positioning cavity in positioning fit with the positioning structure, an operation notch for partially exposing the positioning structure, and a penetrating cavity for exposing the probe from the bottom of the frame body, the positioning cavity is communicated with the insertion matching cavity, the operation notch penetrates through the cavity wall of the positioning cavity, the penetrating cavity is disposed below the insertion matching cavity and communicated with the insertion matching cavity, the slot structure is disposed on the frame body, and the probe is disposed in the penetrating cavity.

Preferably, the slot structure penetrates through the cavity wall of the embedded matching cavity.

Preferably, on the same positioning structure, the dismounting operation member is arranged back to back in a left-right arrangement.

Preferably, the corners of the left ends of the assembling mold core and the embedding matching cavity are right angles, and the corners of the right ends of the assembling mold core and the embedding matching cavity are rounded angles; or the left end corners of the assembling mold core and the embedding matching cavity are round corners, and the right end corners of the assembling mold core and the embedding matching cavity are right angles.

Preferably, the utility model discloses a PCB test module still including assemble in leading of the bottom of support body is just backplate, lead the backplate and seted up and wear to put hole and plug bush chamber, wear to put the hole and run through from top to bottom lead just backplate, the plug bush chamber runs through lead the bottom surface of backplate and surround all around wear to put the hole, the bottom of probe passes downwards in proper order wear to put the chamber and wear to put and lie in again behind the hole in the plug bush chamber.

Preferably, the frame body is further provided with an embedding assembly cavity which is located below the penetrating cavity and communicated with the penetrating cavity, the embedding assembly cavity penetrates through the bottom surface of the frame body, the guide guard plate is embedded in the embedding assembly cavity from the bottom of the frame body, lateral installation notches communicated with the outside are formed in the positions of the left side and the right side of the inserting sleeve cavity, and a locking screw is biased towards the installation notches and locks the guide guard plate on the frame body.

Preferably, the number of the probe modules is two and the probe modules are arranged in a spaced manner in the left-right direction of the frame body.

Preferably, the utility model discloses a PCB test module is still including being used for with the support body lock is fixed to the lock on outside base station attaches the screw and is blockked the lock screw that the screw dropped, a lug is respectively extended at both ends about the support body, the lug has seted up down the counter bore with running through from top to bottom, the lock attach the screw rotationally assemble in the counter bore, the lock screw assemble in the counter bore blocks the lock attaches the screw and falls out, the middle part of lock screw has been seted up and has been supplied the instrument to pass in order to twist the operation space that the screw was attached to the lock.

Compared with the prior art, the PCB test module comprises the dismounting operation part, the frame body and the probe module which are independent from each other and can be detachably assembled together, so that the probe module and the frame body are made into a separate design; and the probe module comprises an assembly mold core which is detachably assembled with the frame body and a probe which is penetrated in the assembly mold core, so that the probe and the assembly mold core are made into an independent component relative to the frame body, and the probe module can be compatible with different frame bodies to reduce the cost by utilizing the detachable fit of the assembly mold core and the frame body. Simultaneously, with the help of the dismouting operating parts of assembling in support body and assembly mold core to and have the lock structure of joining in marriage by support body and another person in the assembly mold core, make dismouting operation between probe module and the support body convenient with the change, thereby make the utility model discloses a PCB test module's use is more nimble and convenient.

Drawings

Fig. 1 is a schematic view of a three-dimensional structure of the PCB testing module of the present invention.

Fig. 2 is a schematic view of the three-dimensional decomposition structure of the PCB testing module after the probe module is separated from the frame body.

Fig. 3 is a schematic perspective exploded view of the PCB test module shown in fig. 2.

Fig. 4 is a schematic view of the internal structure of the PCB test module shown in fig. 1 cut by a plane passing through the center line of the same row of probes.

Fig. 5 is a schematic perspective view of the probe module in the PCB testing module of the present invention.

Fig. 6 is a schematic perspective exploded view of the probe module shown in fig. 5.

Fig. 7 is a schematic plane structure view of the probe module shown in fig. 5 projected from left to right.

Fig. 8 is a schematic view of a three-dimensional structure of the PCB testing module according to the present invention when the frame body and the guide guard plate are assembled together.

Fig. 9 is a schematic perspective exploded view of fig. 8.

Fig. 10 is a schematic perspective view of a frame body in the PCB test module according to the present invention.

Detailed Description

In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.

Referring to fig. 1 to 4, the PCB test module 100 of the present invention includes a mounting/dismounting operation part 10, and a frame body 20 and a probe module 30 which are independent from each other and detachably assembled together, such that the frame body 20 and the probe module 30 are designed to be separated from each other, such that the frame body 20 is an independent component and the probe module 30 is another independent component, thereby facilitating the mounting/dismounting operation between the probe module 30 and the frame body 20. The probe module 30 includes an assembly core 31 detachably assembled with the frame 20 and a probe 32 penetrating through the assembly core 32, two ends of the probe 32 are respectively exposed, preferably, a top end of the probe 32 extends upward out of a top surface of the assembly core 31, and a bottom end of the probe 32 extends downward out of a bottom surface of the assembly core 31, so as to meet requirements of electrical contact between the top end and the bottom end of the probe 32 and corresponding components, for example, the top end of the probe 32 is electrically contacted with a component in a test base, and the bottom end of the probe 32 is electrically contacted with a PCB to be tested, but not limited thereto; specifically, the plurality of probes 32 are arranged on the assembly mold core 31 in a matrix, and all the probes 32 are fixed together by the assembly mold core 31, so that the probe module 30 can be assembled and disassembled on the frame body 20 by assembling and disassembling the assembly mold core 31 on the frame body 20; the specific number of the probes 32 is flexibly selected according to actual conditions; since the assembly core 31 is detachably engaged with the frame body 20, a series of probe modules 30 with different numbers of probes 32 and capable of normally detachably engaging with the frame body 10 can be obtained by increasing or decreasing the number of the probes 32 while the size of the assembly core 31 is maintained, so as to further improve the compatibility between the probe modules 30 and the frame body 20. The disassembling and assembling operation piece 10 is assembled on the assembling mold core 31, so that the disassembling and assembling operation piece 10 and the probe module 30 are also made into independent components; the frame 20 has a locking structure 21a, so that the disassembling and assembling operation member 10 is selectively locked and connected with the locking structure 21a to block the disassembling and assembling of the probe module 30 on the frame 20, and the disassembling and assembling operation member 10 is selectively unlocked and connected with the locking structure 21a to separate from the blocking of the disassembling and assembling of the probe module 30 on the frame 20, thereby facilitating the disassembling and assembling operation of the probe module 30 on the frame 20; of course, the mounting/dismounting operation member 10 can be mounted on the frame 20 according to actual needs, and correspondingly, the locking structure 21a can be provided by the mounting core 31, which can achieve the purpose of facilitating the mounting/dismounting operation of the probe module 30 on the frame 20. Specifically, as shown in fig. 1 to 4, the two probe modules 30 are arranged in a spaced manner in the left and right direction (i.e., the direction indicated by the arrow a) of the frame 20, so as to test two sets of PCBs simultaneously, thereby improving the testing efficiency; of course, the number of the probe modules 30 may be one or three according to actual requirements, and thus the present invention is not limited thereto. More specifically, the following:

as shown in fig. 2 to 3 and fig. 5 to 7, the dismounting operation element 10 includes an exposed operation portion 11 and a plugging core 12 connected to the operation portion 11 and driven by the operation portion 11 to slide along the left and right direction of the frame 20, and the locking structure 21a is a slot structure for plugging the plugging core 12, so that the locking connection between the dismounting operation element 10 and the locking structure 21a is more reliable and the locking releasing operation is more convenient. Specifically, the operating portion 11 is a cylindrical block structure, a first end of the plug core 12 adjacent to the locking structure 21a has a flat position 121, a second end of the plug core 12 away from the locking structure 21a is provided with a threaded structure 122, the cylindrical block structure is in threaded connection with the threaded structure 122, so that an operator can conveniently clamp the plug core 12 by an operating tool (such as a wrench or a pincer) by means of the flat position 121, and thus the plug core 12 can rotate, and the threaded structure 122 of the plug core 12 can be screwed into or out of the operating portion 11 to achieve the purpose of assembling and disassembling the plug core 12 and the operating portion 11, thereby facilitating the assembling and disassembling of the operating element 10 at the assembling mold core 31; of course, the operation portion 11 and the plug core 12 may be integrated as required, for example, the operation portion 11 and the plug core 12 are welded and fixed or integrally formed; preferably, the cylindrical block structure may be provided with a knurl, which can increase the reliability of holding the operation portion 11 by an operator, and the sidewall of the first end of the plug core 12 is provided with a protruding ring 123 inserted into the locking structure 21a at the first end of the plug core 12 and press-fitted with the locking structure 21a, so as to provide a damping force during locking by the protruding ring 123, thereby preventing the probe module 30 from loosening during testing. In order to make the assembling of the folding operation piece 10 on the assembling mold core 31 more compact and reasonable, a positioning structure 31a protrudes from the front side 311 and the back side 312 of the assembling mold core 31, the inserting and pulling core 12 can be slidably inserted on the positioning structure 31a along the left and right direction of the frame body 20, the operation part 11 is located on the positioning structure 31a, preferably, on the same positioning structure 31a, the assembling and pulling operation piece 10 is arranged back to back in a left-right direction, so that the direction of inserting the left side assembling and pulling operation piece 10 into one of the locking structures 21a corresponding to the left side assembling and pulling operation piece 10 is just opposite to the direction of inserting the right side assembling and pulling operation piece 10 into one of the locking structures 21a corresponding to the right side assembling and pulling operation piece 10, and the assembling mold core 31 is provided with the assembling and pulling operation pieces 10 all around, thereby increasing the locking reliability between the assembling mold core 31 and the; of course, the positioning structure 31a may be protruded from the front side 311 or the rear side 312 of the assembling core 31 according to actual needs; in other embodiments, the inserting and extracting core 12 can be slidably inserted on the positioning structure 31a along the front-back direction (i.e. the arrow B) of the frame body 20. In order to make the assembly between the assembly core 31 and the frame body 20 more reasonable and compact, in fig. 2 to 4, and fig. 8 to 10, the frame body 20 is provided with an insertion matching cavity 21 for insertion assembly of the assembly core 31, a positioning cavity 22 in positioning fit with the positioning structure 31a, an operation notch 23 (see fig. 1) for partially exposing the positioning structure 31a, and a penetrating cavity 24 for exposing the probe 32 from the bottom of the frame body 20; the positioning cavity 22 is communicated with the embedding matching cavity 21, the operation notch 23 penetrates through the cavity wall 221 of the positioning cavity 22, and the penetrating cavity 24 is positioned below the embedding matching cavity 21 and communicated with the embedding matching cavity 21; the slotted hole structure is positioned on the frame body 20, and the probe 32 is positioned in the penetrating cavity 24; preferably, the slot structure penetrates through the cavity wall 211 of the embedded matching cavity 21, so that the design can facilitate the processing operation of the slot structure, which is to utilize the avoiding space provided by the embedded matching cavity 21 to facilitate the feed in the processing process of the slot structure. In order to achieve the foolproof effect, in fig. 1 to 3 and fig. 10, the left end corners of the assembling core 31 and the embedding matching cavity 21 are right angles 314(212), and the right end corners of the assembling core 31 and the embedding matching cavity 21 are rounded angles 315 (213); of course, according to actual needs, the left end corners of both the fitting core 31 and the insertion matching cavity 21 are rounded corners 315(213), and the right end corners of both the fitting core 31 and the insertion matching cavity 21 are right angles 314 (212). In order to improve the convenience of the operator to take the assembled mold core 31 during assembling or disassembling, the positioning structure 31a is provided with a slot 316 to define a fin 313, preferably, the fin 313 extends along the left-right direction of the frame body 20, and the two fins 313 are spaced apart from each other in the up-down direction of the frame body 20; of course, the number of fins 313 is not limited thereto; in addition, the middle of the positioning structure 31a can be used for engraving P/N codes and S/N codes, and when the assembling core 31 is installed on the frame body 20, the bottom of the positioning structure 31a provides a supporting force. It should be noted that, as shown in fig. 1 to 3, when there are two probe modules 20, for the assembling core 31 and the inserting matching cavity 21 located on the left side, the left end corner of both the assembling core 31 and the inserting matching cavity 21 is a right angle 314(212), and the right end corner of both the assembling core 31 and the inserting matching cavity 21 is a rounded angle 315 (213); and for the fitting core 31 and the insert matching cavity 21 on the right side, the left end corners of both the fitting core 31 and the insert matching cavity 21 are rounded corners 315(213), and the right end corners of both the fitting core 31 and the insert matching cavity 21 are right angles 314 (212). In order to prevent the assembly core 31 from protruding outward, as shown in fig. 1, the top surface of the assembly core 31 embedded in the insertion matching cavity 21 is flush with the top surface of the frame body 20, so that the top end of the probe 32 protrudes upward out of the frame body 20, but not limited thereto.

As shown in fig. 3 to 4 and 8 to 9, the PCB testing module 100 of the present invention further includes a guide guard plate 40 mounted at the bottom of the frame 20. The guide guard plate 40 is provided with a penetrating hole 41 and an inserting sleeve cavity 42, the penetrating hole 41 penetrates through the guide guard plate 40 from top to bottom, the inserting sleeve cavity 42 penetrates through the bottom surface 40a of the guide guard plate 40 and surrounds the penetrating hole 41 from the periphery, the bottom end of the probe 32 sequentially penetrates through the penetrating cavity 24 and the penetrating hole 41 downwards and then is located in the inserting sleeve cavity 42, and therefore the reliability of the probe 32 in working is guaranteed by means of the guide guard plate 40, and the reliability of the sleeving and matching of the PCB to be tested and the guide guard plate 40 is guaranteed. Specifically, in fig. 4 and 9, the upper end edge of the penetration hole 41 is provided with a chamfer 411 to ensure the smoothness of insertion of the probe 32 into the penetration hole 41 of the guide guard plate 40; the lower edge of the insertion cavity 42 is provided with a chamfer 421 to ensure the smooth sleeving between the guide guard plate 40 and the PCB to be tested. In order to enable the assembly of the guide guard plate 40 on the frame body 20 to be more reasonable and compact, the frame body 20 is further provided with an embedded assembly cavity 25 which is positioned below the penetrating cavity 24 and communicated with the penetrating cavity 24, and the embedded assembly cavity 25 penetrates through the bottom surface 20a of the frame body 20; the guide guard plate 40 is embedded in the insertion assembly cavity 25 from the bottom of the frame body 20, and preferably, the guide guard plate 40 is further retracted into the bottom of the frame body 20 as shown in fig. 4, so as to prevent the guide guard plate 40 from being obstructed by protruding downward from the bottom of the frame body 20; the socket cavity 42 is provided with mounting notches 43 at left and right sides thereof, the mounting notches 43 are laterally communicated with the outside, and a locking screw 50 is biased toward the mounting notches 43 (i.e., the locking screw 50 is screwed into the guide guard plate 40 from the mounting notches 43) and locks the guide guard plate 40 on the frame body 20, so that the locking connection between the guide guard plate 40 and the frame body 20 is more compact, and the blocking interference of the locking screw 50 on the probe 32 is avoided.

As shown in fig. 1 to 4, the PCB testing module 100 of the present invention further includes a locking screw 60 for locking the frame body 20 on the external base and a stop screw 70 for stopping the locking screw 60 from dropping. The left end and the right end of the frame body 20 are respectively extended with a lug 26, the lug 26 is provided with a lower counter bore 261 in a vertically penetrating manner, the locking screw 60 is rotatably assembled in the counter bore 261, the stop screw 70 is assembled in the counter bore 261 and prevents the locking screw 60 from falling out, the middle part of the stop screw 70 is provided with an operation space 71 for a tool (such as a screwdriver or an electric screwdriver) to pass through to screw the locking screw 60, and the design ensures that the locking screw 60 can be screwed, and can prevent the locking screw 70 from being accidentally lost when the frame body 20 is folded from an external base table, thereby improving the operation convenience. Specifically, the stop screw 70 is located directly above the locking screw 70, but not limited thereto.

It should be noted that, in the drawings, the assembly mold core 31 is a rubber core, and the shape thereof is square; the frame body 20 is a plate, the embedding matching cavity 21, the positioning cavity 22, the penetrating cavity 23 and the embedding assembly cavity 25 on the frame body 20 are square, and the operation gap 23 is in an isosceles trapezoid shape; of course, they have other shapes according to actual needs, and are not limited thereto. Meanwhile, in the drawings, the arrow a indicates a direction from the left to the right of the frame 20, the arrow B indicates a direction from the front to the rear of the frame 20, and the arrow C indicates a direction from the top to the bottom of the frame 20.

Compared with the prior art, the PCB test module 100 of the present invention comprises the detachable operating member 10, and the frame body 20 and the probe module 30 which are independent of each other and detachably assembled together, so that the probe module 30 and the frame body 20 are designed to be separated; and the probe module 30 includes an assembling mold core 31 detachably assembled with the frame body 20 and a probe 32 inserted into the assembling mold core 31, so that the probe 32 and the assembling mold core 31 are made into a single component relative to the frame body 20, and the probe module 30 can be compatible with different frame bodies 20 by utilizing the detachable assembly of the assembling mold core 31 and the frame body 20, thereby reducing the cost. Meanwhile, with the help of the dismouting operating parts 10 of assembling in one of support body 20 and assembly mold core 31 to and have the lock structure 21a by another one in support body 20 and assembly mold core 31, make dismouting operation between probe module 30 and the support body 20 and change the convenience, thereby make the utility model discloses a PCB test module 100's use is more nimble and convenient.

The above disclosure is only a preferred embodiment of the present invention, and certainly should not be limited thereto, since the equivalent changes and modifications of the present invention are intended to fall within the scope of the present invention.

Claims (10)

1. A PCB test module is characterized by comprising a disassembly and assembly operating part, a frame body and a probe module, wherein the frame body and the probe module are independent from each other and are detachably assembled together, the probe module comprises an assembly mold core detachably assembled with the frame body and a probe penetrating through the assembly mold core, two tail ends of the probe are respectively exposed and arranged, the disassembly and assembly operating part is assembled on one of the frame body and the assembly mold core, the other of the frame body and the assembly mold core is provided with an assembly and locking structure, and the disassembly and assembly operating part is selectively in locking connection or unlocking connection with the assembly and locking structure so as to correspondingly block or separate the probe module from assembly and disassembly on the frame body.

2. The PCB test module of claim 1, wherein the disassembly/assembly operation member comprises an exposed operation portion and a plugging core connected with the operation portion and driven by the operation portion to slide along the left-right direction or the front-back direction of the frame body, and the lock-fitting structure is a slot structure for plugging the plugging core.

3. The PCB test module of claim 2, wherein the front side and/or the back side of the assembly core protrudes with a positioning structure, the plug core can be glidingly arranged on the positioning structure along the left and right directions of the frame body, the operation part is arranged on the positioning structure, the frame body is provided with an embedding matching cavity for embedding and assembling the assembling mold core, a positioning cavity matched with the positioning structure in a positioning way, an operation notch for partially exposing the positioning structure and a penetrating cavity for exposing the probe from the bottom of the frame body, the positioning cavity is communicated with the embedding matching cavity, the operation notch penetrates through the cavity wall of the positioning cavity, the penetrating cavity is located below the embedding matching cavity and communicated with the embedding matching cavity, the slotted hole structure is located on the frame body, and the probe is located in the penetrating cavity.

4. The PCB test module of claim 3, wherein the slot structure extends through a wall of the cavity.

5. The PCB test module of claim 3, wherein the disassembly and assembly operators are arranged back to back in a left-right arrangement on the same positioning structure.

6. The PCB test module of claim 3, wherein the left end corners of the assembly mold core and the embedding matching cavity are right angles, and the right end corners of the assembly mold core and the embedding matching cavity are rounded corners; or the left end corners of the assembling mold core and the embedding matching cavity are round corners, and the right end corners of the assembling mold core and the embedding matching cavity are right angles.

7. The PCB testing module of claim 3, further comprising a guiding guard plate assembled at the bottom of the frame, wherein the guiding guard plate is provided with a penetrating hole and a plug bush cavity, the penetrating hole penetrates through the guiding guard plate from top to bottom, the plug bush cavity penetrates through the bottom surface of the guiding guard plate and surrounds the penetrating hole from the periphery, and the bottom end of the probe sequentially penetrates through the penetrating cavity and the penetrating hole downwards and then is located in the plug bush cavity.

8. The PCB testing module of claim 7, wherein the frame body further defines an insertion assembly cavity located below the penetrating cavity and communicated with the penetrating cavity, the insertion assembly cavity penetrates through the bottom surface of the frame body, the guide guard plate is inserted into the insertion assembly cavity from the bottom of the frame body, the insertion sleeve cavity defines mounting notches at left and right sides thereof, the mounting notches are laterally communicated with the outside, and a locking screw is biased toward the mounting notches and locks the guide guard plate on the frame body.

9. The PCB test module of claim 1, wherein the probe modules are arranged in two and spaced arrangement in a left-right direction of the frame.

10. The PCB test module of claim 1, further comprising a locking screw for locking the frame body to an external base and a stop screw for stopping the locking screw from falling off, wherein a lug extends from each of the left and right ends of the frame body, a lower counter bore is formed in the lug in a vertically penetrating manner, the locking screw is rotatably assembled in the counter bore, the stop screw is assembled in the counter bore and stops the locking screw from falling off, and an operating space for a tool to pass through to screw the locking screw is formed in the middle of the stop screw.

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