Probe module

Abstract

The invention discloses a probe module. The probe module comprises a plug; the guide head is fixedly connected with the plug and is provided with a first through hole and a first sinking table groove; the guide sleeve is provided with a sleeve hole, and the plug and the guide head are at least partially located in the sleeve hole; the flange is provided with a second through hole and a notch, the notch is communicated with the second through hole and the radial side face of the flange in the radial direction, the second through hole comprises a first hole part and a second hole part, the second hole part is close to the guide sleeve relative to the first hole part, and the hole diameter of the second hole part is larger than that of the first hole part; the two positioning shafts are arranged in parallel and are fixedly connected with the guide sleeve and the flange; one end of the spring is located in the first sinking table groove, the other end of the spring is located in the second hole part, and the two positioning shafts are symmetrically arranged on the two radial sides of the spring and form gaps with the spring; and the cable connecting piece is physically and electrically connected with the plug and sequentially penetrates through the first through hole, the spring and the second through hole. According to the probe module, the test problem caused by reference deviation of the chip contact is solved, and the disassembly and assembly time is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic component testing, and in particular to a probe module. Background Art

[0002] With the advancement of electronic technology, the frequency of electronic products is getting higher and higher, the size is getting smaller and smaller, and the number of channels is increasing. This has promoted strict and efficient technical requirements for high-frequency testing of antennas and transmission lines with board-to-board (BTB) connectors. Specifically, the board-to-board connector test probe module needs to have high test accuracy and easy disassembly and assembly.

[0003] In the prior art, the probe module usually adopts a single rod to connect the plug and the flange, and a spring is arranged outside the rod. There are defects such as low position accuracy between the plug and the flange, and low plane overlap between the end face of the plug and the bottom of the flange. Furthermore, the board-to-board connector has a certain tolerance on the product it is assembled, but the probe is generally an absolutely fixed position. The spring arranged outside the rod can correct the contact point between the plug and the board-to-board connector to a certain extent, but the angle at which the plug can be tilted and rotated is limited, resulting in the board-to-board connector being unable to fully enter the plug, and the test accuracy and consistency are low. In addition, the parts of the board-to-board connector test probe module are replaced frequently. When replacing parts of the existing probe module, the cable needs to pass through the hole in the middle of the flange, and the disassembly and assembly time is relatively long.

[0004] Therefore, it is necessary to provide a new probe module to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a probe module to solve the testing problem caused by the reference deviation of chip contacts and save the disassembly and assembly time.

[0006] To achieve the above object, the present invention adopts the following technical solution:

[0007] A probe module, used for testing a board-to-board connector, comprising:

[0008] plug;

[0009] A guide head fixedly connected to the plug, the guide head having a first through hole axially penetrating therethrough and a first sink groove axially recessed from a side away from the plug;

[0010] A guide sleeve having a sleeve hole, wherein the plug and the guide head are at least partially located in the sleeve hole;

[0011] The flange has a second through hole and a notch that penetrates axially, wherein the notch radially connects the second through hole with a radial side surface of the flange, the second through hole includes a first hole portion and a second hole portion, the second hole portion is closer to the guide sleeve than the first hole portion, and the aperture of the second hole portion is larger than the aperture of the first hole portion;

[0012] Two positioning shafts are provided in parallel, and the positioning shafts are fixedly connected to the guide sleeve and the flange;

[0013] A spring, wherein the two positioning axes are symmetrically arranged on both radial sides of the spring and there is a gap between the spring and the positioning axis, the two axial ends of the spring respectively abut against the guide head and the flange, one end of the spring is at least partially located in the first sink groove, and the other end of the spring is at least partially located in the second hole portion;

[0014] A cable connector is physically and electrically connected to the plug, and the cable connector passes through the first through hole, the spring, and the second through hole in sequence.

[0015] As a further improved technical solution of the present invention, the guide sleeve is provided with a first fixing hole, and the end of the positioning shaft close to the guide sleeve is provided with a threaded hole recessed along the axial direction, and is screwed and fixed in the first fixing hole and the threaded hole by a first fastener to connect the guide sleeve and the positioning shaft;

[0016] The flange is provided with a second fixing hole, and the end of the positioning shaft close to the flange is provided with an axially recessed screw hole, which is screwed into the second fixing hole and the screw hole by a second fastener to connect the flange and the positioning shaft.

[0017] As a further improved technical solution of the present invention, the positioning shaft includes a shaft body and a first protruding shaft and a second protruding shaft protruding from both ends of the shaft body, the first fixing hole includes a third hole portion and a fourth hole portion, the aperture of the fourth hole portion is larger than the aperture of the third hole portion, the first protruding shaft is adapted to the fourth hole portion, the second fixing hole includes a fifth hole portion and a sixth hole portion, the aperture of the sixth hole portion is larger than the aperture of the fifth hole portion, and the second protruding shaft is adapted to the sixth hole portion.

[0018] As a further improved technical solution of the present invention, the second hole portion includes a first sub-hole portion and a second sub-hole portion, the first sub-hole portion is close to the first hole portion relative to the second sub-hole portion, the aperture of the second sub-hole portion is larger than the aperture of the first sub-hole portion, and the aperture of the first sub-hole portion is equivalent to the diameter of the spring.

[0019] As a further improved technical solution of the present invention, the cable connector includes a low-frequency cable and a high-frequency cable, and the width of the notch is greater than the diameter of the low-frequency cable and the diameter of the high-frequency cable.

[0020] As a further improved technical solution of the present invention, the guide head further comprises a second sink groove axially recessed from a side close to the plug, and the plug is at least partially located in the second sink groove.

[0021] As a further improved technical solution of the present invention, the sleeve hole includes a seventh hole portion and an eighth hole portion, the seventh hole portion is closer to the flange relative to the eighth hole portion, the aperture of the seventh hole portion is larger than the aperture of the eighth hole portion, and the guide head is adapted to the seventh hole portion.

[0022] As a further improved technical solution of the present invention, the seventh hole portion includes a third sub-hole portion, the aperture of the third sub-hole portion gradually decreases from the side close to the flange toward the side away from the flange, and the guide head includes a bevel portion, which is adapted to the third sub-hole portion.

[0023] As a further improved technical solution of the present invention, the plug includes a shell, a circuit board and a probe group, the shell includes a base and a boss, the circuit board is arranged in the second sink groove, the base is fixedly connected to the circuit board, the cable connector is physically and electrically connected to the circuit board or the probe group, and the probe group is at least partially exposed on the side of the boss away from the base.

[0024] As a further improved technical solution of the present invention, the plug also includes a carrier and a grounding block, the shell has a receiving cavity connecting the base and the boss, the carrier and the grounding block are located in the receiving cavity, the probe group is at least partially arranged in the carrier and at least partially arranged in the grounding block, and the carrier is located between the grounding block and the circuit board.

[0025] Compared with the prior art, the beneficial effect of the probe module of the present invention is that by setting two equal-height positioning shafts to connect the guide sleeve and the flange, the accuracy of the flange to the plug position is guaranteed, and the plane overlap degree from the plug end face to the bottom of the flange is guaranteed. The flange hole is enlarged and slotted on the side of the flange, so that more cables can pass through the flange, and the cables do not need to pass through the flange hole during disassembly and assembly, and can be taken out or loaded from the notch on the side of the flange, thereby saving disassembly and assembly time, and no secondary damage to parts will be caused during the disassembly and assembly process. A spring is set between the guide head and the flange to correct the plug to accurately contact the board-to-board connector. The spring is limited only at both ends, so the spring has more twisting deformation angles, and pushes the guide head and the plug accordingly, so that the board-to-board connector is completely entered into the plug to ensure accurate and consistent testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the three-dimensional structure of a probe module according to a specific embodiment of the present invention;

[0027] Figure 2 A schematic diagram of the three-dimensional structure of a probe module of a specific embodiment of the present invention from another perspective;

[0028] Figure 3 A schematic diagram of the exploded structure of a probe module according to a specific embodiment of the present invention;

[0029] Figure 4 It is a schematic diagram of a partial three-dimensional cross-section structure of a probe module according to a specific embodiment of the present invention;

[0030] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of the A area in the middle;

[0031] Figure 6 for Figure 4 Schematic diagram of the enlarged structure of the middle B area;

[0032] Figure 7 A schematic diagram of a partially exploded structure of a probe module according to a specific embodiment of the present invention;

[0033] Figure 8 for Figure 7 A schematic cross-sectional structure diagram of ;

[0034] Fig. 9 It is a schematic diagram of assembling a plug and a guide head according to a specific embodiment of the present invention;

[0035] Fig.10 It is a schematic diagram of a partially exploded structure of a plug and a guide head according to a specific embodiment of the present invention;

[0036] Fig.11 It is a schematic diagram of the exploded structure of a plug according to a specific embodiment of the present invention;

[0037] Fig.12 A schematic diagram of the exploded structure of a plug according to a specific embodiment of the present invention from another perspective;

[0038] Fig.13 It is a schematic diagram of a partial three-dimensional cutaway structure of a plug according to a specific embodiment of the present invention;

[0039] Fig.14 It is a schematic diagram of a partially exploded structure of a plug according to a specific embodiment of the present invention;

[0040] Fig.15 This is a schematic diagram of a partially exploded structure of a plug according to a specific embodiment of the present invention from another perspective. DETAILED DESCRIPTION

[0041] The exemplary embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. If there are several embodiments, the features of these embodiments can be combined with each other without conflict. When the description refers to the drawings, unless otherwise specified, the same numbers in different drawings represent the same or similar elements. The contents described in the following exemplary embodiments do not represent all embodiments consistent with the present invention; on the contrary, they are only examples of devices, products and / or methods consistent with some aspects of the present invention as recorded in the claims of the present invention.

[0042] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the scope of protection of the present invention. The singular forms "a", "said" or "the" used in the specification and claims of the present invention are also intended to include plural forms, unless the context clearly indicates other meanings.

[0043] It should be understood that the words used in the specification and claims of the present invention, such as "first", "second" and similar words, do not indicate any order, quantity or importance, but are only used to distinguish the names of features. Similarly, words such as "one" or "an" do not indicate a quantitative limitation, but indicate the existence of at least one. Unless otherwise specified, words such as "front", "rear", "upper", "lower" and similar words appearing in the present invention are only for the convenience of explanation and are not limited to a specific position or a spatial orientation. Words such as "include" or "comprise" are an open-ended expression, meaning that the elements appearing before "include" or "comprise" include the elements appearing after "include" or "comprise" and their equivalents, which does not exclude that the elements appearing before "include" or "comprise" may also include other elements. If "several" appears in the present invention, it means two or more.

[0044] See also Figures 1 to 15 As shown, an embodiment of the present invention discloses a probe module for testing the electrical performance of a board-to-board connector.

[0045] See also Figures 1 to 3 As shown, the probe module includes a plug 1, a guide head 2, a guide sleeve 3, a flange 4, a positioning shaft 5, a spring 6 and a cable connector 7. The plug 1 is fixedly connected to the guide head 2, the guide sleeve 3 is sleeved on the outer periphery of the plug 1 and the guide head 2, the positioning shaft 5 is fixedly connected to the guide sleeve 3 and the flange 4, the spring 6 is arranged between the guide head 2 and the flange 4, and the cable connector 7 is physically and electrically connected to the plug 1.

[0046] See also Figure 3 and Figure 4As shown, the guide head 2 has a first through hole 21 axially extending therethrough, the flange 4 has a second through hole 41 axially extending therethrough, and the cable connector 7 passes through the first through hole 21 , the spring 6 and the second through hole 41 in sequence from the plug 1 .

[0047] See also Figure 1 , Figure 3 and Figure 4 As shown, the guide sleeve 3 has a sleeve hole 31, and the plug 1 and the guide head 2 are at least partially located in the sleeve hole 31. Since the spring 6 is arranged between the guide head 2 and the flange 4, under the elastic force of the spring 6, the guide head 2 and the plug 1 will not fall off from the guide sleeve 3.

[0048] See also Figures 4 to 8 As shown, the sleeve hole 31 includes a seventh hole portion 311 and an eighth hole portion 312, wherein the seventh hole portion 311 is closer to the flange 4 relative to the eighth hole portion 312, and the aperture of the seventh hole portion 311 is larger than the aperture of the eighth hole portion 312, the guide head 2 is adapted to the seventh hole portion 311, and a third connecting wall 313 is provided between the seventh hole portion 311 and the eighth hole portion 312, and a side of the guide head 2 close to the plug 1 at least partially abuts against the third connecting wall 313. Such a configuration facilitates the assembly between the guide head 2 and the guide sleeve 3, the assembly accuracy is high, and the assembly time can be reduced to a certain extent. Further, there is no fixed connection between the guide head 2 and the guide sleeve 3, and under the elastic force of the spring 6, a force is generated on the guide head 2 to move away from the flange 4 in the axial direction and abut against the guide sleeve 3; and the guide head 2 and the plug 1 can withstand the force from one end of the plug 1 to the side of the flange 4, and under the elastic force of the spring 6, the guide head 2 and the plug 1 will not fall off from the guide sleeve 3.

[0049] For further information, see Figures 4 to 8 As shown, the seventh hole portion 311 includes a third sub-hole portion 3111, the aperture of the third sub-hole portion 3111 gradually decreases from the side close to the flange 4 to the side away from the flange 4, and the guide head 2 includes a chamfered portion 24, which is adapted to the third sub-hole portion 3111. In this way, there is a mutual guiding effect between the guide sleeve 3 and the guide head 2. When the guide head 2 and the plug 1 are subjected to pressure, the elastic force of the spring 6 is released, and the chamfered portion 24 of the guide head 2 can slide smoothly along the third sub-hole portion 3111, thereby improving assembly accuracy and stability.

[0050] See also Fig. 9 and Fig.10 As shown, the guide head 2 also includes a second recessed groove 23 that is axially recessed from a side close to the plug 1, and the plug 1 is at least partially located in the second recessed groove 23. This arrangement facilitates the assembly between the plug 1 and the guide head 2, the assembly accuracy is high, and the assembly time is reduced to a certain extent. Further, the portion of the plug 1 located in the second recessed groove 23 matches the second recessed groove 23, and the plug 1 and the guide head 2 are also fixedly connected by a third fastener 83.

[0051] The side walls of the second sink groove 23 are relatively located on the inner side, and the inclined walls of the beveled portion 24 are relatively located on the outer side. The guide head 2 also has a top wall 25 connecting the second sink groove 23 and the beveled portion 24. The top wall 25 is higher than the bottom wall of the second sink groove 23. The top wall 25 abuts against the third connecting wall 313, and the bottom wall of the second sink groove 23 abuts against the plug 1.

[0052] See also Figure 3 and Figure 4 As shown, the two ends of the spring 6 abut against the guide head 2 and the flange 4 respectively to generate elastic force on the guide head 2 and the plug 1 fixedly connected to the guide head 2. The guide head 2 also has a first recessed groove 22 axially recessed from the side away from the plug 1, and the first through hole 21 is located in the first recessed groove 22 in the axial direction, and one end of the spring 6 is at least partially located in the first recessed groove 22. The second through hole 41 of the flange 4 includes a first hole portion 411 and a second hole portion 412, wherein the second hole portion 412 is closer to the guide sleeve 3 relative to the first hole portion 411, and the aperture of the second hole portion 412 is larger than the aperture of the first hole portion 411, and the other end of the spring 6 is at least partially located in the second hole portion 412.

[0053] Since the board-to-board connector has a certain tolerance on the product it is assembled to, but the probe generally has an absolute fixed position, the board-to-board connector mounted on the product has a certain tolerance relative to the plug 1, and the elastic force of the spring can be used to correct the guide head 2 and the plug 1. At this time, the guide head 2 and the plug 1 will have a certain tilt to improve the accuracy of the docking board-to-board connector. In this embodiment, the tilted rotation point is closer to the board-to-board connector than other conventional probe modules. Under the same circumstances, the plug 1 can rotate at a larger angle and has a stronger compatibility. In addition, only the two ends of the spring 6 are limited, that is, the spring 6 has more parts that can be deformed and twisted. When the relative position of the board-to-board connector and the plug 1 is large, there may be a large angle when the plug 1 just contacts the board-to-board connector, but during the contact process between the board-to-board connector and the plug 1, the angle is always large, which will cause the board-to-board connector to be unable to fully enter the plug 1; in this embodiment, since the spring 6 can be twisted at a large angle, the spring 6 will be deformed and twisted in order to release the elastic force, and accordingly push the guide head 2 and the plug 1 to move a certain distance, so that the board-to-board connector completely enters the plug 1 and docks with it, thereby ensuring the accuracy and consistency of the test.

[0054] For further information, see Figures 4 to 8As shown, the second hole portion 412 includes a first sub-hole portion 4121 and a second sub-hole portion 4122, wherein the first sub-hole portion 4121 is closer to the first hole portion 411 relative to the second sub-hole portion 4122, and the aperture of the second sub-hole portion 4122 is larger than the aperture of the first sub-hole portion 4121, that is, the first hole portion 411, the first sub-hole portion 4121, and the second sub-hole portion 4122 are arranged in sequence and the apertures increase in sequence. The aperture of the first sub-hole portion 4121 is equivalent to the diameter of the spring 6, and the first sinking groove 22 is a circular groove, and its inner diameter is also equivalent to the diameter of the spring 6. In this way, a small part of the two ends of the spring 6 are radially limited in the first sub-hole portion 4121 and the first sink groove 22 respectively, which can strengthen the limiting effect on the two ends of the spring 6 without affecting the twisting deformation of other parts of the spring 6. The aperture of the second sub-hole portion 4122 is slightly larger than the first sub-hole portion 4121, which can radially limit a small part of the end of the spring 6 near the middle to prevent the spring 6 from twisting and deforming and the inclination angle being too large to be corrected.

[0055] See also Figures 3 to 8 As shown, two parallel positioning shafts 5 are provided, and the two positioning shafts 5 are axially fixedly connected to the guide sleeve 3 and the flange 4 respectively, and the two positioning shafts 5 are at the same height, which can not only ensure the position accuracy of the flange 4 to the plug 1, but also ensure the plane overlap from the end face of the plug 1 to the bottom of the flange 4, thereby achieving higher connection accuracy of the probe module at a lower cost.

[0056] The two positioning shafts 5 are symmetrically arranged on both radial sides of the spring 6 to improve the stability of the entire probe module. There is a gap between the spring 6 and the positioning shafts 5 to prevent the positioning shafts 5 from limiting the twisting rotation angle of the spring 6.

[0057] See also Figures 4 to 8 As shown, the guide sleeve 3 is provided with a first fixing hole 32, and the end of the positioning shaft 5 close to the guide sleeve 3 is provided with a threaded hole 501 that is recessed in the axial direction, and the aperture of the threaded hole 501 is smaller than the diameter of the positioning shaft 5, and the first fastener 81 is screwed fixed in the first fixing hole 32 and the threaded hole 501 to connect the guide sleeve 3 and the positioning shaft 5. The flange 4 is provided with a second fixing hole 43, and the end of the positioning shaft 5 close to the flange 4 is provided with a screw hole 502 that is recessed in the axial direction, and the aperture of the screw hole 502 is smaller than the diameter of the positioning shaft 5, and the second fastener 82 is screwed fixed in the second fixing hole 43 and the screw hole 502 to connect the flange 4 and the positioning shaft 5. Further, the length of the first fastener 81 is greater than the thickness of the guide sleeve 3, so that the first fixing hole 32 and the threaded hole 501 can be penetrated at the same time; the length of the second fastener 82 is greater than the thickness of the flange 4, so that the second fixing hole 43 and the screw hole 502 can be penetrated at the same time. With such arrangement, the two ends of the positioning shaft 5 respectively abut against the guide sleeve 3 and the flange 4 and are fixedly connected through the openings at both ends, so that the two positioning shafts 5 can always be kept at the same height while ensuring the stability of the connection.

[0058] For further information, see Figures 4 to 8 As shown, the positioning shaft 5 includes a shaft body 51 and a first protruding shaft 52 and a second protruding shaft 53 protruding from both ends of the shaft body 51, wherein the first protruding shaft 52 is closer to the guide sleeve 3 relative to the second protruding shaft 53. The first fixing hole 32 includes a third hole portion 321 and a fourth hole portion 322, wherein the fourth hole portion 322 is closer to the flange 4 relative to the third hole portion 321, and the aperture of the fourth hole portion 322 is larger than the aperture of the third hole portion 321, the first protruding shaft 52 is matched with the fourth hole portion 322, and the aperture of the first slotted hole 501 is smaller than the diameter of the first protruding shaft 52. The second fixing hole 43 includes a fifth hole portion 431 and a sixth hole portion 432, wherein the sixth hole portion 432 is closer to the guide sleeve 3 relative to the fifth hole portion 431, and the aperture of the sixth hole portion 432 is larger than the aperture of the fifth hole portion 431, the second protruding shaft 53 is matched with the sixth hole portion 432, and the aperture of the second slotted hole 502 is smaller than the diameter of the second protruding shaft 53. Such an arrangement not only strengthens the connection strength between the two ends of the positioning shaft 5 and the guide sleeve 3 and the flange 4, but also makes the disassembly and assembly between the three faster and more convenient.

[0059] In this embodiment, the diameters of the first protruding shaft 52 and the second protruding shaft 53 are both smaller than the diameter of the shaft body 51 , so the positioning shaft 5 has a first end face 541 and a second end face 542 facing the guide sleeve 3 , and a third end face 543 and a fourth end face 544 facing the flange 4 . The first end face 541 is the face of the first convex shaft 52 away from the shaft body 51, the second end face 542 is the face of the shaft body 51 close to the first convex shaft 52, the first connecting wall 323 is provided between the third hole portion 321 and the fourth hole portion 322 of the guide sleeve 3, the first end face 541 at least partially abuts the first connecting wall 323, and the second end face 542 at least partially abuts the face of the guide sleeve 3 close to the flange 4; the third end face 543 is the face of the second convex shaft 53 away from the shaft body 51, the fourth end face 544 is the face of the shaft body 51 close to the second convex shaft 53, the second connecting wall 433 is provided between the fifth hole portion 431 and the sixth hole portion 432 of the flange 4, the third end face 543 at least partially abuts the second connecting wall 433, and the fourth end face 544 at least partially abuts the face of the flange 4 close to the guide sleeve 3. In this way, the positioning shaft 5 has two abutting faces at different axial positions with the guide sleeve 3 and the flange 4, respectively, which improves the installation accuracy of the positioning shaft 5 and simplifies the installation steps.

[0060] See also Figure 1 , Figure 2 and Figure 7 As shown, the flange 4 also has an axially penetrating notch 42, which radially connects the second through hole 41 with a radial side surface of the flange 4, so that the cable can be directly taken out or loaded from the notch 42 when being disassembled or assembled, without passing through the second through hole 41. At the same time, the diameter of the second through hole 41 is increased in this embodiment, so that more cables can pass through the second through hole 41.

[0061] See also Figures 1 to 3 As shown, the cable connector 7 includes a low-frequency cable 71, a high-frequency cable 72, a wiring terminal 73 and a plug connector 74, wherein the low-frequency cable 71 is connected to the wiring terminal 73, and the high-frequency cable 72 is connected to the plug connector 74, and the wiring terminal 73 and the plug connector 74 are respectively used to be plugged into the corresponding low-frequency and high-frequency external test equipment. Further, the diameter of the low-frequency cable 71 and the diameter of the high-frequency cable 72 are both smaller than the width of the slot 42, so that the low-frequency cable 71 and the high-frequency cable 72 can be smoothly taken out or loaded into the slot 42 during disassembly and assembly.

[0062] See also Figure 3 , Fig.11 and Fig.12 As shown, the plug 1 includes a housing 11, a circuit board 12, a probe group 13, a carrier 14 and a grounding block 15. The housing 11 includes a base 111 and a boss 112. The circuit board 12 is fixedly connected to the base 111. The cable connector 7 is physically and electrically connected to the circuit board 12 or the probe group 13. The probe group 13 is at least partially exposed on the side of the boss 112 away from the base 111. Further, the radial outer contour of the base 111 is flush with the radial outer contour of the circuit board 12, and the thickness of the circuit board 12 is equal to the groove depth of the second sinking groove 24. The circuit board 12 is arranged in the second sinking groove 24. In this way, the circuit board 12 is protected from damage and does not affect the connection between the circuit board 12 and other components. The shell 11 has a receiving cavity 113 connecting the base 111 and the boss 112. The carrier 14 and the grounding block 15 are located in the receiving cavity 113. The probe group 13 is at least partially disposed in the carrier 14 and at least partially disposed in the grounding block 15. The carrier 14 is clamped between the grounding block 15 and the circuit board 12.

[0063] See also Fig.12 and Fig.13 As shown, the carrier 14 and the grounding block 15 are both in the shape of a cuboid, and their radial outer contours are flush and equal, and the four radial side surfaces of the carrier 14 and the grounding block 15 at least partially abut against the inner wall of the receiving cavity 113 to limit the carrier 14 and the grounding block 15. A first groove 114 is further provided on the side of the base 111 away from the boss 112, and the two first grooves 114 are located radially outside the receiving cavity 113 and are arranged opposite to each other, and the first grooves 114 are connected to the receiving cavity 113. Such a configuration facilitates the disassembly and assembly of the carrier 14 and the grounding block 15 in the receiving cavity 113.

[0064] See also Figures 9 to 13As shown, the base 111 is provided with a plurality of first mounting holes 1111, and the circuit board 12 is correspondingly provided with a plurality of second mounting holes 121, and the two are fixedly connected by the third fastener 83. Further, the guide head 2 is provided with a plurality of third mounting holes 26 corresponding to the first mounting holes 1111 and the second mounting holes 121, and the third fastener 83 sequentially penetrates the first mounting holes 1111, the second mounting holes 121 and the third mounting holes 26 to fix the base 111, the circuit board 12 and the guide head 2 in connection.

[0065] See also Figures 11 to 15 As shown, the probe group 13 includes a low-frequency probe 131 and a high-frequency probe 132, the circuit board 12 is provided with a third through hole 122, the low-frequency cable 71 is welded to the circuit board 12, and the high-frequency cable 72 passes through the third through hole 122 to be physically and electrically connected to the high-frequency probe 132, and the low-frequency probe 131 and the high-frequency probe 132 are at least partially exposed on the side of the boss 112 away from the substrate 111. Furthermore, a third depression groove 1121 is provided on the side of the boss 112 away from the base 111, and a first top wall 1122 and a second top wall 1123 are provided on the side of the boss 112 away from the base 111, wherein the first top wall 1122 is the wall of the boss 112 as a whole farthest from the base 111, and the second top wall 1123 is the bottom wall of the third depression groove 1121, and the second top wall 1123 is located on the inner side of the first top wall 1122 in the radial direction, and the low-frequency probe 131 and the high-frequency probe 132 are exposed in the third depression groove 1121, and the exposed parts of the low-frequency probe 131 and the high-frequency probe 132 are located between the first top wall 1122 and the second top wall 1123 in the axial direction, that is, the exposed height of the low-frequency probe 131 and the high-frequency probe 132 does not exceed the first top wall 1122.

[0066] See also Figures 13 to 15 As shown, the low-frequency probe 131 and the high-frequency probe 132 are of equal length, the low-frequency probe 131 includes a first needle body 1311 and a first needle head 1312 and a second needle head 1313 at both ends, and the high-frequency probe 132 includes a second needle body 1321 and a third needle head 1322 and a fourth needle head 1323 at both ends. The grounding block 15 is provided with a first pinhole 151 and a second pinhole 152 axially penetrating therethrough, for setting the low-frequency probe 131 and the high-frequency probe 132. The first pinhole 1311 and the second pinhole 1321 are at least partially set in the first pinhole 151 and the second pinhole 152, respectively, and the first pinhead 1312 and the third pinhead 132 are at least partially exposed in the third sink groove 1121, respectively. The carrier 14 is provided with an axially penetrating cable hole 141, the high-frequency cable 72 passes through the third through hole 122 to the cable hole 141 of the carrier 14, the fourth needle head 1323 is physically and electrically connected to the high-frequency cable 72, and the second needle head 1313 is connected to the carrier 14 and is physically and electrically connected to the circuit board 12 through the carrier 14.

[0067] See also Figures 11 to 15 As shown, the plug 1 also includes a stopper 16, which is clamped between the circuit board 12 and the carrier 14. The stopper 16 is provided with a second notch 161 that runs axially through, and a plurality of second notches 161 are respectively connected to the radial side of the stopper 16, and the width of the second notch 161 is equivalent to the diameter of the high-frequency cable 72, so as to limit the high-frequency cable 72 and improve the accuracy of the probe module. The axial projection of the second notch 161 is located within the third through hole 122 of the circuit board 12, so that the high-frequency cable 72 can smoothly pass through the circuit board 12 and the stopper 16 to the carrier 14 to connect with the high-frequency probe 132, and further improve the convenience of disassembly and assembly of the high-frequency cable 72.

[0068] See also Fig.14 and Fig.15 As shown, the probe group 13 also includes a grounding probe 133, and the stopper 16 is provided with a third pinhole 162 that penetrates axially, and the grounding probe 133 penetrates the third pinhole 162 to connect the circuit board 12 and the carrier 14. The grounding probe 133 includes a third needle body 1331 and a fifth needle head 1332 and a sixth needle head 1333 at both ends. The third needle body 1331 is at least partially disposed in the third pinhole 162, the fifth needle head 1332 is connected to the carrier 14, and the sixth needle head 1333 is welded to the circuit board 12. Further, the carrier 14 is provided with a fourth pinhole 142, and the fourth pinhole 142 corresponds to the third pinhole 162 axially and is connected to the third pinhole 162. In this embodiment, the third needle body 1331 is at least partially disposed in the third pinhole 162 and at least partially disposed in the fourth pinhole 142, and the fifth needle head 1332 is disposed in the fourth pinhole 142 to strengthen the connection between the circuit board 12 and the carrier 14, thereby strengthening the grounding performance.

[0069] See also Figures 13 to 15 As shown, the probe group 13 also includes a shear wave probe 134, which is longer than the low-frequency probe 131 and the high-frequency probe 132. The shear wave probe 134 connects the grounding block 15 and the circuit board 12 to transmit the shear wave signal. The shear wave probe 134 includes a fourth needle body 1341 and a seventh needle head 1342 and an eighth needle head 1343 at both ends. The grounding block 15 is provided with an axially penetrating fifth pinhole 153, and the carrier 14 and the limit block 16 are respectively provided with a sixth pinhole 143 and a seventh pinhole 163 corresponding to the axial direction of the fifth pinhole 153. The fourth needle body 1341 is at least partially disposed in the fifth pinhole 153 and at least partially disposed in the sixth pinhole 143 and at least partially disposed in the seventh pinhole 163. The seventh needle head 1342 is at least partially exposed in the third sink groove 1121, and the eighth needle head 1343 is welded to the circuit board 12.

[0070] In summary, compared with the prior art, the probe module of the present invention has the following advantages: by setting two equal-height positioning shafts 5 to connect the guide sleeve 3 and the flange 4, the position accuracy of the flange 4 to the plug 1 is guaranteed, and the plane overlap degree from the end face of the plug 1 to the bottom of the flange 4 is also guaranteed. The flange hole is enlarged and slotted on the side of the flange 4, so that more cables can pass through the flange 4, and the cables do not need to pass through the flange hole during disassembly and assembly, and can be taken out or loaded from the notch 42 on the side of the flange, thereby saving disassembly and assembly time, and no secondary damage to parts will be caused during the disassembly and assembly process. A spring 6 is set between the guide head 2 and the flange 4 to correct the plug 1 to accurately contact the board-to-board connector. The spring 6 is limited only at both ends, so the spring 6 has more twisting deformation angles, and pushes the guide head 2 and the plug 1 accordingly, so that the board-to-board connector completely enters the plug 1 to ensure accurate and consistent testing.

[0071] The above implementation modes are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on the technical personnel in the relevant technical field. Although this specification has described the present invention in detail with reference to the above embodiments, ordinary technical personnel in the field should understand that the technical personnel in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A probe module for testing a board-to-board connector, characterized in that: The probe module comprises: Plug (1); A guide head (2) fixedly connected to the plug (1), the guide head (2) having a first through hole (21) extending axially therethrough and a first depression groove (22) recessed axially from a side away from the plug (1); A guide sleeve (3) having a sleeve hole (31), wherein the plug (1) and the guide head (2) are at least partially located in the sleeve hole (31); A flange (4) having an axially penetrating second through hole (41) and a notch (42), wherein the notch (42) radially connects the second through hole (41) with a radial side surface of the flange (4), the second through hole (41) comprising a first hole portion (411) and a second hole portion (412), the second hole portion (412) being closer to the guide sleeve (3) relative to the first hole portion (411), and the aperture of the second hole portion (412) being larger than the aperture of the first hole portion (411); Two positioning shafts (5) are provided in parallel, and the positioning shafts (5) are fixedly connected to the guide sleeve (3) and the flange (4); A spring (6), the two positioning shafts (5) are symmetrically arranged on both radial sides of the spring (6) and a gap exists between the spring (6) and the positioning shaft (5), the axial ends of the spring (6) respectively abut against the guide head (2) and the flange (4), one end of the spring (6) is at least partially located in the first sink groove (22), and the other end of the spring (6) is at least partially located in the second hole portion (412); A cable connector (7) is physically and electrically connected to the plug (1), and the cable connector (7) is sequentially penetrated through the first through hole (21), the spring (6), and the second through hole (41).

2. The probe module according to claim 1, characterized in that: The guide sleeve (3) is provided with a first fixing hole (32), and one end of the positioning shaft (5) close to the guide sleeve (3) is provided with a threaded hole (501) recessed in the axial direction, and is screwedly fixed in the first fixing hole (32) and the threaded hole (501) by a first fastener (81) to connect the guide sleeve (3) and the positioning shaft (5); The flange (4) is provided with a second fixing hole (43), and the end of the positioning shaft (5) close to the flange (4) is provided with a screw hole (502) recessed along the axial direction, and is screwedly fixed in the second fixing hole (43) and the screw hole (502) by a second fastener (82) to connect the flange (4) and the positioning shaft (5).

3. The probe module according to claim 2, characterized in that: The positioning shaft (5) comprises a shaft body (51) and a first protruding shaft (52) and a second protruding shaft (53) protruding from both ends of the shaft body (51); the first fixing hole (32) comprises a third hole portion (321) and a fourth hole portion (322); the aperture of the fourth hole portion (322) is larger than the aperture of the third hole portion (321); the first protruding shaft (52) is matched with the fourth hole portion (322); the second fixing hole (43) comprises a fifth hole portion (431) and a sixth hole portion (432); the aperture of the sixth hole portion (432) is larger than the aperture of the fifth hole portion (431); the second protruding shaft (53) is matched with the sixth hole portion (432).

4. The probe module according to claim 1, characterized in that: The second hole portion (412) comprises a first sub-hole portion (4121) and a second sub-hole portion (4122); the first sub-hole portion (4121) is closer to the first hole portion (411) than the second sub-hole portion (4122); the aperture of the second sub-hole portion (4122) is larger than the aperture of the first sub-hole portion (4121); and the aperture of the first sub-hole portion (4121) is equivalent to the diameter of the spring (6).

5. The probe module according to claim 1, characterized in that: The cable connector (7) comprises a low-frequency cable (71) and a high-frequency cable (72), and the width of the slot (42) is greater than the diameter of the low-frequency cable (71) and the diameter of the high-frequency cable (72).

6. The probe module according to claim 1, characterized in that: The guide head (2) further comprises a second depression groove (23) which is axially recessed from a side close to the plug (1), and the plug (1) is at least partially located in the second depression groove (23).

7. The probe module according to claim 1, characterized in that: The sleeve hole (31) comprises a seventh hole portion (311) and an eighth hole portion (312); the seventh hole portion (311) is closer to the flange (4) than the eighth hole portion (312); the aperture of the seventh hole portion (311) is larger than the aperture of the eighth hole portion (312); and the guide head (2) is adapted to the seventh hole portion (311).

8. The probe module according to claim 7, characterized in that: The seventh hole portion (311) includes a third sub-hole portion (3111), the aperture of the third sub-hole portion (3111) gradually decreases from a side close to the flange (4) toward a side away from the flange (4), and the guide head (2) includes a bevel portion (24), and the bevel portion (24) is adapted to the third sub-hole portion (3111).

9. The probe module according to claim 6, characterized in that: The plug (1) comprises a shell (11), a circuit board (12) and a probe group (13); the shell (11) comprises a base (111) and a boss (112); the circuit board (12) is arranged in the second sink groove (24); the base (111) is fixedly connected to the circuit board (12); the cable connector (7) is physically and electrically connected to the circuit board (12) or the probe group (13); and the probe group (13) is at least partially exposed on a side of the boss (112) away from the base (111).

10. The probe module according to claim 9, characterized in that: The plug (1) further comprises a carrier (14) and a grounding block (15); the shell (11) comprises a receiving cavity (113) connecting the base (111) and the boss (112); the carrier (14) and the grounding block (15) are located in the receiving cavity (113); the probe group (13) is at least partially disposed in the carrier (14) and at least partially disposed in the grounding block (15); and the carrier (14) is located between the grounding block (15) and the circuit board (12).

Images