Detector

Abstract

The invention discloses a detector which comprises a probe module, a circuit board module, a floating module, a coaxial cable and an output connector. The floating module comprises a flange, a positioning column, a spiral spring, a positioning block and a pin, one end of the positioning column is fixed to the flange, the other end of the positioning column is matched with the positioning block in a limiting mode, the spiral spring is connected between the flange and the positioning block in an abutting mode and wound around the positioning column, and the pin fixes the circuit board module to the flange. The probe module comprises a butt joint plug and a plurality of probes fixed on the butt joint plug, the plurality of probes comprise a high-frequency signal probe, a low-frequency signal probe and a grounding probe, the plurality of probes are probes of the same length model, and the probe module is detachably connected to the floating module. One end of the coaxial cable penetrates through the positioning column and the circuit board to be connected with the probe, and the other end of the coaxial cable is fixed in the output connector. According to the invention, the plurality of probes are probes of the same length model, so that the cost and the assembly difficulty of the probes can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of high-frequency connector testing, and in particular to a detector. Background Art

[0002] like Figure 1 and 2 As shown, a conventional probe includes a floating mechanism 1' with a coil spring, a probe module 2', a coaxial cable 3', and a PCB 4'. The probe module 2' mates with a board-to-board connector, transmitting the connection signal via probe 25' to a copper block 23'. This signal is then transferred from copper block 23' to PCB 4', and then to a test instrument via coaxial cable 3' to test the performance of the board-to-board connector.

[0003] The function of the floating mechanism 1' is to enable the plug 5' to achieve floating cooperation with the board-to-board connector. The floating mechanism 1' includes a flange 11', a fixing block 12', a positioning column 13' and a coil spring 14'. The function of the probe module 2' is to cooperate with the board-to-board connector to test the performance of the board-to-board connector. The probe module 2' includes a positioning frame 21', a needle mold 22', a copper block 23', a wire clamp 24' and a probe 25', wherein the probe 25' is divided into three types according to different test signals, namely high-frequency signal, low-frequency signal and ground signal. The ground signal is centrally transferred to the PCB circuit board 4' through the copper block 23'. The grounding copper tube 31' of the coaxial cable 3' is installed in the through hole of the copper block 23' with a clearance fit, and its function is to contact with the high-frequency probe. The function of the PCB circuit board 4' is to transfer the test signal to the coaxial cable 3', and then connect it to the test instrument through the plug interface 32' at the other end of the coaxial cable 3'.

[0004] The detectors in the prior art have the following disadvantages:

[0005] Disadvantage 1: Three different lengths of signal probes 25' are used, of which the high-frequency probe is only 2.4mm long and needs to be customized, which is costly and difficult to assemble.

[0006] Disadvantage 2: Countersunk holes 6' need to be machined inside the copper block 23' and the positioning frame opening 21', which makes machining and measurement difficult and results in poor dimensional consistency between different batches.

[0007] Disadvantage 3: The coaxial cable 3 ′ and the copper block 23 ′ are clearance-fitted, which affects the grounding stability of the high-frequency signal probe. Summary of the Invention

[0008] One of the technical problems to be solved by the present invention is to provide a detector with a simple structure.

[0009] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0010] A detector comprises: a probe module, a circuit board module, a floating module, a coaxial cable and an output connector;

[0011] The floating module includes a flange, a positioning column, a coil spring, a positioning block and a pin. One end of the positioning column is fixed to the flange, and the other end of the positioning column is limitedly engaged with the positioning block. The coil spring abuts between the flange and the positioning block and is wound around the positioning column. The pin fixes the circuit board module to the flange.

[0012] The probe module includes a docking plug and a plurality of probes fixed to the docking plug, the plurality of probes including a high-frequency signal probe, a low-frequency signal probe and a grounding probe, the plurality of probes are probes of the same length and model, and the probe module is detachably connected to the floating module;

[0013] One end of the coaxial cable passes through the positioning column and the circuit board, and the other end of the coaxial cable is fixed in the output connector.

[0014] Compared with the prior art, the probe module of the present invention is detachably connected to the floating module, which facilitates the replacement and maintenance of the probe module, and also facilitates the replacement of different types of probes to adapt to different board-to-board connectors; the multiple probes of the present invention are probes of the same length model, which can reduce the cost and assembly difficulty of the probes.

[0015] Furthermore, the circuit board module includes a circuit board and a grounding copper block. The circuit board has a gold-plated through-hole penetrating along the thickness direction of the circuit board. The grounding copper block is embedded in the gold-plated through-hole of the circuit board.

[0016] Furthermore, the coaxial cable includes a center conductor, an insulating layer and a grounding copper tube, wherein the insulating layer is coated on the outer side of the center conductor, the grounding copper tube is coated on the outer side of the insulating layer, and the insulating layer electrically isolates the center conductor and the grounding copper tube;

[0017] The grounding copper tube is tightly fitted with the grounding copper block. The grounding copper block includes a first through-hole section and a second through-hole section. The first through-hole section is arranged close to the probe module relative to the second through-hole section. The aperture of the first through-hole section is smaller than that of the second through-hole section. The outer diameter of the grounding copper tube is smaller than that of the second through-hole section. The outer diameter of the grounding copper tube is larger than that of the first through-hole section. The grounding copper tube and the hole wall of the first through-hole section are interference fit.

[0018] Furthermore, the detector further includes a wire clamp, the circuit board includes a first end face and a second end face located on opposite sides of the circuit board in a thickness direction, the flange has a receiving groove recessed along the thickness direction thereof, the wire clamp and the circuit board module are located in the receiving groove, the wire clamp is located at the bottom of the receiving groove, and the second end face of the circuit board abuts against the wire clamp;

[0019] The wire clamp clamps the coaxial cable on one side of the second end surface of the circuit board, and the grounding of the coaxial cable

[0020] The end surface of the copper tube is located on the first end surface side, and the end surface of the grounding copper block is located on the first end surface side and is located in the same plane as the first end surface of the circuit board.

[0021] Furthermore, the pin passes through the circuit board and the wire clamp along the axial direction of the positioning column, and the pin is threadedly connected to the bottom wall of the receiving groove, and the pin fixes the circuit board and the wire clamp to the flange.

[0022] Furthermore, the probe module includes a pad and a needle mold, and the docking plug includes a base portion and a docking portion extending from the base portion, the base portion is in the shape of a cube, and the docking portion is in the shape of a rectangular parallelepiped; in the orthographic projection in the thickness direction of the docking plug, the outer wheel width of the docking portion is located within the outer contour of the base, the center of the docking portion coincides with the center of the base portion, and the ratio of the projected area of ​​the docking portion to the projected area of ​​the base portion is less than 1 / 5;

[0023] The docking plug has a receiving groove and a docking groove.

[0024] The spacer portion of the groove, the pad and the needle mold are located in the receiving groove, the pad is located between the spacer portion and the needle mold, the pad is clearance-matched with the groove wall of the receiving groove, and the needle mold is transitionally matched with the groove wall of the receiving groove;

[0025] Each of the probes includes a needle head, a needle tail and a middle part. The needle head passes through the spacer and is exposed in the docking groove. The middle part passes through the pad and the needle mold. The needle tail extends beyond the base and the needle mold in a direction away from the needle head.

[0026] Furthermore, the positioning column is fixed to the flange by riveting, and a limiting groove is provided on the side of the positioning block away from the flange. The positioning column includes a column base and a column body. The diameter of the column base is larger than the diameter of the column body. The column base is limited and fitted in the limiting groove. The column body is connected to the flange through the positioning block. The column body is slidably fitted with the positioning block, and the positioning column can move relative to the positioning block.

[0027] Furthermore, the circuit board includes a plurality of conductive paths, the conductive paths are electrically connected to the probes, the conductive paths are electrically connected to the coaxial cables, and the circuit board transfers the probes and the coaxial cables.

[0028] Furthermore, the probe module has multiple first screw holes, the floating module has multiple second screw holes, the detector includes multiple screws with external threads, the screws include external threads, the screws detachably connect the probe module and the floating module, and the screw threads cooperate with the first screw holes and the second screw holes.

[0029] Furthermore, the base portion has a plurality of first screw holes, the circuit board has a plurality of second screw holes, the probe includes a plurality of screws with external threads, the screws include external threads, the screws detachably connect the probe module and the floating module, and the screw threads are matched with the first screw holes and the second screw holes;

[0030] The base portion has a positioning hole, the pin is located in the positioning hole, and the pin is used for positioning the probe module. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a cross-sectional view of a prior art detector;

[0032] Figure 2 Yes Figure 1 A partially enlarged view of a prior art detector is shown;

[0033] Figure 3 is a perspective view of an embodiment of a detector according to the present invention;

[0034] Figure 4 Yes Figure 3 Another perspective view of the detector shown;

[0035] Figure 5 Yes Figure 4 a front view of the docking plug shown;

[0036] Figure 6 Yes Figure 4 A cross-sectional view of the docking plug along the AA direction;

[0037] Figure 7 Yes Figure 4 a cross-sectional view of the detector shown;

[0038] Figure 8 Yes Figure 4 An exploded view of the detector shown;

[0039] Figure 9 Yes Figure 4 An exploded view of a portion of the detector shown;

[0040] Figure 10 Yes Figure 7 A further exploded view of the detector shown;

[0041] Figure 11 Yes Figure 7 A magnified view of a portion of the detector shown;

[0042] Figure 12 Yes Figure 4 a cross-sectional view of the detector shown;

[0043] Figure 13 Yes Figure 4 Exploded view of the detector shown;

[0044] Figure 14 Yes Figure 4 a perspective view of a portion of the detector shown;

[0045] Figure 15 Yes Figure 14 a perspective view of a portion of the detector shown;

[0046] Figure 16 Yes Figure 15 a perspective view of the coaxial cable shown;

[0047] Figure 17 Yes Figure 4 Schematic cross-sectional view of the docking plug shown.

[0048] Description of the numbers in the figure:

[0049] Detector 100, probe module 10, docking plug 11, base portion 111, positioning hole 112, docking portion 113, receiving groove 114, docking groove 115, spacer 116, probe 12, needle head 121, needle tail 122, middle portion 123, pad 13, needle mold 14, first screw hole 15, circuit board module 20, circuit board 21, first end surface 211, second end surface 212, gold-plated through hole 213, conductive Path 214, grounding copper block 22, first through hole section 221, second through hole section 222, floating module 30, flange 31, receiving groove 32, positioning column 33, column base 331, column body 332, coil spring 34, positioning block 35, limiting groove 351, pin 36, second screw hole 37, coaxial cable 40, center conductor 41, insulation layer 42, grounding copper tube 43, output connector 50, wire clamp 60, screw 70. DETAILED DESCRIPTION

[0050] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, like numbers in different figures represent like or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present invention, as detailed in the appended claims.

[0051] The terms used in the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms "a", "an", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0052] It should be understood that the words “first”, “second” and similar terms used in the specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as “a” or “an” do not indicate a quantity limitation, but rather indicate the presence of at least one; “plurality” indicates a quantity of two or more. Unless otherwise indicated, words such as “front”, “rear”, “lower” and / or “upper” are for ease of description only and are not limited to one position or one spatial orientation. Words such as “include” or “comprising” and similar terms mean that the elements or objects appearing before “include” or “comprising” cover the elements or objects listed after “include” or “comprising” and their equivalents, and do not exclude other elements or objects.

[0053] The following is a detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations may complement or be combined with each other.

[0054] like Figures 3 to 17 FIG2 shows a probe 100 according to the present invention, which is used to test the terminal performance of a board-to-board connector. The probe 100 includes a probe module 10, a circuit board module 20, a floating module 30, a coaxial cable 40, and an output connector 50.

[0055] The floating module 30 includes a flange 31, a positioning column 33, a coil spring 34, a positioning block 35 and a pin 36. One end of the positioning column 33 is fixed to the flange 31, and the other end of the positioning column 33 is limitedly engaged with the positioning block 35. The coil spring 34 abuts between the flange 31 and the positioning block 35, and the coil spring 34 is wrapped around the positioning column 33. The pin 36 fixes the circuit board module 20 to the flange 31.

[0056] The probe module 10 includes a docking plug 11 and multiple probes 12 fixed to the docking plug 11. The multiple probes 12 include high-frequency signal probes, low-frequency signal probes, and ground probes. The multiple probes 12 are of the same length and type. The probe module 10 is detachably connected to the floating module 30. One end of the coaxial cable 40 passes through the positioning post 33 and the circuit board 21. The other end of the coaxial cable 40 is fixed to the output connector 50. The high-frequency cable of the coaxial cable 40 is soldered to the output connector 50.

[0057] Compared to the prior art, the probe module 10 of the present invention is detachably connected to the floating module 30, facilitating replacement and maintenance of the probe module 10 and facilitating replacement of different types of probes 12 to adapt to different board-to-board connectors. The multiple probes 12 of the present invention are of the same length and model, which can reduce the cost and assembly difficulty of the probes 12 and improve consistency. Probes 12 of the same length and model eliminate the need for machining counterbores in the docking plug 11 for probes of different lengths to fit within the docking plug 11 when grounding copper blocks are required for transfer. This simplifies the structure and makes assembly easier.

[0058] The circuit board module 20 includes a circuit board 21 and a grounding copper block 22. The circuit board 21 has a gold-plated through-hole 213 extending through its thickness, and the grounding copper block 22 is embedded in the gold-plated through-hole 213 of the circuit board 21. Compared to the prior art, which separates the grounding copper block 22 from the circuit board 21 and abuts the circuit board 21 against the grounding copper block 22, the present invention integrates the grounding copper block 22 into the circuit board module 20, reducing the axial and radial space occupied by the grounding copper block 22 on the docking plug 11, thereby achieving a miniaturized design for the probe module 10.

[0059] The coaxial cable 40 includes a center conductor 41 , an insulating layer 42 and a grounding copper tube 43 . The insulating layer 42 covers the outer side of the center conductor 41 , and the grounding copper tube 43 covers the outer side of the insulating layer 42 . The insulating layer 42 electrically isolates the center conductor 41 and the grounding copper tube 43 .

[0060] The grounding copper tube 43 is tightly fitted with the grounding copper block 22. The grounding copper block 22 includes a first through-hole section 221 and a second through-hole section 222. The first through-hole section 221 is positioned relative to the second through-hole section 222 and is closer to the probe module 10. The aperture of the first through-hole section 221 is smaller than that of the second through-hole section 222. The outer diameter of the grounding copper tube 43 is smaller than that of the second through-hole section 222. The outer diameter of the grounding copper tube 43 is larger than that of the first through-hole section 221. The grounding copper tube 43 and the hole wall of the first through-hole section 221 have an interference fit. The detector 100 also includes a wire clamp 60. The circuit board 21 includes a first end face 211 and a second end face 212 located on opposite sides of the circuit board 21 in its thickness direction. The flange 31 has a receiving groove 32 recessed along its thickness direction. The wire clamp 60 and the circuit board module 20 are located in the receiving groove 32. The wire clamp 60 is located at the bottom of the receiving groove 32. The second end face 212 of the circuit board 21 abuts against the wire clamp 60.

[0061] The wire clamp 60 clamps the coaxial cable 40 on one side of the second end surface 212 of the circuit board 21, the grounding copper tube 43 of the coaxial cable 40 is located on the end surface on the first end surface 211 side, and the end surface of the grounding copper block 22 on the first end surface 211 side is in the same plane as the first end surface 211 of the circuit board 21.

[0062] Compared with the prior art, the grounding copper tube 43 of the coaxial cable 40 is tightly fitted with the through hole of the grounding copper block 22, and the second end face 212 side of the circuit board 21 clamps one side of the grounding copper tube 43 of the coaxial cable 40 through the wire clamp 60, so that the grounding copper tube 43 of the coaxial cable 40, the grounding copper block 22 and the circuit board 21 are on the same plane on the first end face 211 side, providing sufficient stability for the testing of the board-to-board connector.

[0063] The pin 36 passes through the circuit board 21 and the wire clamp 60 along the axial direction of the positioning column 33 . The pin 36 is threadedly connected to the bottom wall of the receiving groove 32 . The pin 36 fixes the circuit board 21 and the wire clamp 60 to the flange 31 .

[0064] The probe module 10 includes a pad 13 and a needle mold 14, and the docking plug 11 includes a base portion 111 and a docking portion 113 extending from the base portion 111. The base portion 111 is a cube and the docking portion 113 is a rectangular parallelepiped. In the orthographic projection in the thickness direction of the docking plug 11, the outer width of the docking portion 113 is located within the outer contour of the base, the center of the docking portion 113 coincides with the center of the base portion 111, and the ratio of the projected area of ​​the docking portion 113 to the projected area of ​​the base portion 111 is less than 1 / 5. The docking plug 11 has a receiving groove 114 and a docking groove 115. The docking plug 11 includes a spacing portion 116 that separates the receiving groove 114 and the docking groove 115. The pad 13 and the needle mold 14 are located in the receiving groove 114. The pad 13 is located between the spacing portion 116 and the needle mold 14. The pad 13 is clearance-fitted with the groove wall 117 of the receiving groove 114, and the needle mold 14 is transitionally fitted with the groove wall 117 of the receiving groove 114.

[0065] Each probe 12 includes a needle head 121, a needle tail 122 and a middle portion 123. The needle head 121 passes through the spacer 116 and is exposed in the docking groove 115. The middle portion 123 passes through the pad 13 and the needle mold 14. The needle tail 122 extends beyond the base portion 111 and the needle mold 14 in a direction away from the needle head 121.

[0066] The positioning column 33 is fixed to the flange 31 by riveting, and a limiting groove 351 is provided on the side of the positioning block 35 away from the flange 31. The positioning column 33 includes a column base 331 and a column body 332. The diameter of the column base 331 is larger than the diameter of the column body 332. The column base 331 is limited and fitted in the limiting groove 351. The column body 332 is connected to the flange 31 through the positioning block 35. The column body 332 is slidably fitted with the positioning block 35, and the positioning column 33 can move relative to the positioning block 35.

[0067] The circuit board 21 includes a plurality of conductive paths 214 . The conductive paths 214 are electrically connected to the probes 12 , and the conductive paths 214 are electrically connected to the coaxial cable 40 . The circuit board 21 connects the probes 12 and the coaxial cable 40 .

[0068] The probe module 10 has multiple first screw holes 15, the floating module 30 has multiple second screw holes 37, and the probe includes multiple screws 70 with external threads. The screws 70 include external threads. The screws 70 detachably connect the probe module 10 and the floating module 30, and the screws 70 are threadedly engaged with the first screw holes 15 and the second screw holes 37.

[0069] The base portion 111 has a plurality of first screw holes 15, the circuit board 21 has a plurality of second screw holes 37, and the probe includes a plurality of screws 70 having external threads. The screws 70 have external threads and detachably connect the probe module 10 and the floating module 30. The screws 70 are threadedly engaged with the first screw holes 15 and the second screw holes 37. The base portion 111 has a positioning hole 112, and the pin 36 is located in the positioning hole 112. The pin 36 is used to position the probe module 10.

[0070] During assembly, the grounding copper block 22 is pressed into the gold-plated through-hole 213 of the circuit board 21. The grounding copper tube 43 of the coaxial cable 40 fits tightly into the through-hole of the grounding copper block 22. The first end face 211 of the circuit board 21 is clamped onto one side of the grounding copper tube 43 of the coaxial cable 40 via the wire clamp 60, so that the grounding copper tube 43 of the coaxial cable 40, the grounding copper block 22, and the other end face of the circuit board 21 are aligned in the same plane. The circuit board 21 is then installed into the floating module 30 via the pin 36 on the floating module 30. The probe module 10 is positioned on the floating module 30 via the first screw hole on the docking plug 11 and the pin 36 on the floating module 30, and then installed on the floating module 30 with screws 70.

[0071] The spacer 13 is located in front of the pin mold 14 and is assembled into the receiving groove 114 of the docking plug 11. The spacer 13 and the receiving groove 114 of the docking plug 11 have a clearance fit to facilitate assembly, while the pin mold 14 and the docking plug 11 have a transition fit to ensure the accurate positioning of the probe 12. During assembly, the spacer 13 is first placed into the receiving groove 114 of the docking plug 11, the pin mold 14 is then pressed into the receiving groove 114 of the docking plug 11, and finally the probe 12 is placed into the pin mold 14.

[0072] The positioning column 33 is connected to the center position of the flange 31 by riveting, and the coil spring 34 is sleeved on the positioning column 33. The other end of the positioning column 33 is elastically abutted against the positioning block 35 through the spring, and the other end of the coil spring 34 is movably connected to the flange 31.

[0073] The present invention is not limited to the above-mentioned specific implementation methods. Various changes made by ordinary technicians in this field based on the above-mentioned concept without creative work are all within the scope of protection of the present invention.

Claims

1. A detector, characterized in that: include: A probe module (10), a circuit board module (20), a floating module (30), a coaxial cable (40) and an output connector (50); The floating module (30) includes a flange (31), a positioning column (33), a coil spring (34), a positioning block (35) and a pin (36); one end of the positioning column (33) is fixed to the flange (31); the other end of the positioning column (33) is limitedly matched with the positioning block (35); the coil spring (34) elastically abuts between the flange (31) and the positioning block (35); the coil spring (34) is wound around the positioning column (33); and the pin (36) fixes the circuit board module (20) to the flange (31); The probe module (10) comprises a docking plug (11) and a plurality of probes (12) fixed to the docking plug (11), the plurality of probes (12) comprising a high-frequency signal probe, a low-frequency signal probe and a grounding probe, the plurality of probes (12) being probes of the same length and type, and the probe module (10) being detachably connected to the floating module (30); One end of the coaxial cable (40) passes through the positioning column (33) and the circuit board (21), and the other end of the coaxial cable (40) is arranged in the output connector (50).

2. The detector according to claim 1, wherein: The circuit board module (20) comprises a circuit board (21) and a grounding copper block (22); the circuit board (21) has a gold-plated through hole (213) penetrating along the thickness direction thereof; and the grounding copper block (22) is embedded in the gold-plated through hole (213) of the circuit board (21).

3. The detector according to claim 2, wherein: The coaxial cable (40) comprises a central conductor (41), an insulating layer (42) and a grounding copper tube (43), wherein the insulating layer (42) is coated on the outer side of the central conductor (41), and the grounding copper tube (43) is coated on the outer side of the insulating layer (42), and the insulating layer (42) electrically isolates the central conductor (41) and the grounding copper tube (43); The grounding copper tube (43) is tightly fitted with the grounding copper block (22); the grounding copper block (22) comprises a first through-hole section (221) and a second through-hole section (222); the first through-hole section (221) is arranged close to the probe module (10) relative to the second through-hole section (222); the aperture of the first through-hole section (221) is smaller than that of the second through-hole section (222); the outer diameter of the grounding copper tube (43) is smaller than that of the second through-hole section (222); the outer diameter of the grounding copper tube (43) is larger than that of the first through-hole section (221); and the hole walls of the grounding copper tube (43) and the first through-hole section (221) are interference fitted.

4. The detector according to claim 3, wherein: The detector further comprises a wire clamp (60), the circuit board (21) comprises a first end surface (211) and a second end surface (212) located on opposite sides of the circuit board in a thickness direction, the flange (31) comprises a receiving groove (32) recessed along the thickness direction, the wire clamp (60) and the circuit board module (20) are located in the receiving groove (32), the wire clamp (60) is located at the bottom of the receiving groove (32), and the second end surface (212) of the circuit board (21) abuts against the wire clamp (60); The wire clamp (60) clamps the coaxial cable (40) on one side of the second end surface (212) of the circuit board (21); the grounding copper tube (43) of the coaxial cable (40) is located on the end surface on the first end surface (211); and the end surface of the grounding copper block (22) on the first end surface (211) and the first end surface (211) of the circuit board (21) are located on the same plane.

5. The detector according to claim 4, wherein: The pin (36) passes through the circuit board (21) and the wire clamp (60) along the axial direction of the positioning column (33), and the pin (36) is threadedly connected to the bottom wall of the receiving groove (32). The pin (36) fixes the circuit board (21) and the wire clamp (60) to the flange (31).

6. The detector according to claim 2, wherein: The probe module (10) comprises a pad (13) and a needle mold (14); the docking plug (11) comprises a base portion (111) and a docking portion (113) extending from the base portion (111); the base portion (111) is in a cube shape, and the docking portion (113) is in a rectangular parallelepiped shape; in a forward projection in the thickness direction of the docking plug (11), the outer width of the docking portion (113) is located within the outer contour of the base; the center of the docking portion (113) coincides with the center of the base portion (111); and the ratio of the projected area of ​​the docking portion (113) to the projected area of ​​the base portion (111) is less than 1 / 5; The docking plug (11) has a receiving groove (114) and a docking groove (115), the docking plug (111) includes a spacer (116) that spaces the receiving groove (114) and the docking groove (115), the pad (13) and the needle mold (14) are located in the receiving groove (114), the pad (13) is located between the spacer (116) and the needle mold (14), the pad (13) and the groove wall (117) of the receiving groove (114) are clearance-fitted, and the needle mold (14) and the groove wall (117) of the receiving groove (114) are transitionally fitted; Each probe (12) comprises a needle head (121), a needle tail (122) and a middle portion (123); the needle head (121) passes through the spacer (116) and is exposed in the docking groove (115); the middle portion (123) passes through the cushion block (13) and the needle mold (14); and the needle tail (122) extends beyond the base portion (111) and the needle mold (14) in a direction away from the needle head (121).

7. The detector according to claim 1, wherein: The positioning column (33) is fixed to the flange (31) by riveting, and a limiting groove (351) is provided on the side of the positioning block (35) away from the flange (31). The positioning column (33) includes a column base (331) and a column body (332). The diameter of the column base (331) is larger than the diameter of the column body (332). The column base (331) is limited and fitted in the limiting groove (351). The column body (332) passes through the positioning block (35) and is connected to the flange (31). The column body (332) is slidably fitted with the positioning block (35), and the positioning column (33) can move relative to the positioning block (35).

8. The detector according to claim 2, wherein: The circuit board (21) includes a plurality of conductive paths (214), the conductive paths (214) are electrically connected to the probes (12), the conductive paths (214) are electrically connected to the coaxial cables (40), and the circuit board (21) transfers the probes (12) and the coaxial cables (40).

9. The detector according to claim 1, wherein: The probe module (10) has a plurality of first screw holes (15), the floating module (30) has a plurality of second screw holes (37), the probe (12) includes a plurality of screws (70) with external threads, the screws (70) include external threads, the screws (70) detachably connect the probe module (10) and the floating module (30), and the screws (70) are threadedly engaged with the first screw holes (15) and the second screw holes (37).

10. The detector according to claim 6, wherein: The base portion (111) has a plurality of first screw holes (15), the circuit board (21) has a plurality of second screw holes (37), the probe (12) includes a plurality of screws (70), each of the screws (70) includes an external thread, the screws (70) detachably connect the probe module (10) and the floating module (30), and the screws (70) are threadedly engaged with the first screw holes (15) and the second screw holes (37); The base portion (111) has a positioning hole (112), the pin (36) is located in the positioning hole (112), and the pin (36) is used for positioning the probe module (10).

Images