Detector

Abstract

A detector is used for testing terminal performance of a board-to-board connector and comprises a floating connection mechanism and a plug assembly fixed below the floating connection mechanism. The floating connecting mechanism comprises a flange, a fixing block, a positioning column and a spiral spring. And the positioning column is connected to the central position of the flange. The positioning column is sleeved with the spiral spring, and the two opposite ends of the spiral spring abut against the flange and the fixing block in an elastic mode respectively. One of the top and the bottom of the positioning column is movably connected with the flange, and the other one of the top and the bottom of the positioning column is fixedly connected with the fixed block, so that the fixed block is connected below the flange in a floating manner. The plug assembly comprises a wire pressing block, a common block and a pin module. The wire pressing block is located on one side of the shared block, and the needle module is located on the other side of the shared block. The line pressing block, the common block and the needle module are of a stacked three-layer structure. The plug assembly of the detector is easy to assemble, stable in structure and stable in contact.

Description

Technical Field

[0001] The invention relates to the field of electronic components, in particular to a detector. Background Art

[0002] A detector in the prior art comprises a coil spring and a plug under the coil spring. The plug comprises a probe. The probe cooperates with a board-to-board connector, and the performance of the board-to-board connector is tested by the probe. The function of the coil spring is to enable the plug to achieve floating cooperation with the board-to-board connector. The coil spring in the prior art detector is a double coil spring and the double spring structure has two equal-height columns. The function of the coil spring is to reset; the function of the equal-height columns is to position. The detector with a double coil spring structure can stably test when dealing with a small number of test product points (such as 8 pins and 6 pins). However, in the case of multiple pins (such as 12, 16, and 18 pins), due to the lateral arrangement of the double coil spring (two coil springs (4)), it is easy to cause uneven force in the horizontal direction (X direction) and the vertical direction (Y direction), resulting in unstable contact, which in turn leads to a decrease in test yield. Since the double coil spring structure requires two equal-height positioning columns and the positioning columns have the functions of reset and positioning, the processing and assembly requirements are relatively high. In the detector in the prior art, the probe (Pogopin) in the plug does not have a pre-positioning structure, and the contact stability is poor when it cooperates with the board-to-board connector. In addition, there is no pre-positioning structure when the coaxial cable is assembled into the plug, which also causes unstable contact between the coaxial cable and the probe structure. Summary of the invention

[0003] The object of the present invention is to provide a detector which is easy to assemble and has a stable structure and stable contact.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a detector for testing the terminal performance of a board-to-board connector, which includes a floating connection mechanism and a plug assembly fixed below the floating connection mechanism; the floating connection mechanism includes a flange, a fixed block, a positioning column and a coil spring, the positioning column is one and is connected to the center position of the flange, the coil spring is one and is sleeved outside the positioning column, the opposite ends of the coil spring are elastically abutted against the flange and the fixed block respectively, one of the top and the bottom of the positioning column is movably connected to the flange and the other of the top and the bottom of the positioning column is fixedly connected to the fixed block to float the fixed block below the flange; the plug assembly includes a wire pressing block, a common ground block and a needle module, the wire pressing block is located on one side of the common ground block, the needle module is located on the other side of the common ground block, and the wire pressing block, the common ground block and the needle module are a stacked three-layer structure.

[0005] As a further improved technical solution of the present invention, the plug assembly also includes a high-frequency signal probe that can be connected to the signal terminal of the board-to-board connector and a low-frequency ground probe that can be connected to the ground terminal of the board-to-board connector. The common ground block physically and electrically connects the low-frequency ground probe as a whole, and the needle module physically connects the high-frequency signal probe and the low-frequency ground probe as a whole.

[0006] As a further improved technical solution of the present invention, the plug assembly further includes a guide frame fixed below the fixed block, and the common ground block and the needle module are accommodated in the guide frame.

[0007] As a further improved technical solution of the present invention, the wire pressing block is one of being accommodated in the guide frame and being exposed outside the guide frame.

[0008] As a further improved technical solution of the present invention, it also includes a circuit board and a coaxial cable with a shielding shell, and the low-frequency grounding probe is electrically connected to the shielding shell corresponding to the coaxial cable through the circuit board.

[0009] As a further improved technical solution of the present invention, the circuit board is arranged on a side of the wire pressing block away from the common ground block.

[0010] As a further improved technical solution of the present invention, a receiving portion is provided on a side of the fixing block facing the guide frame, and the circuit board is exposed above the guide frame and received in the receiving portion.

[0011] As a further improved technical solution of the present invention, the top of the positioning column is movably connected to the flange and the bottom of the positioning column is fixedly connected to the fixing block so that the fixing block is floatingly connected below the flange.

[0012] As a further improved technical solution of the present invention, the top of the positioning column is fixedly connected to the flange and the bottom of the positioning column is movably connected to the fixing block so that the fixing block is floatingly connected below the flange.

[0013] As a further improved technical solution of the present invention, the fixed block includes a first block and a second block located on the same side of the flange, the first block and the second block are separately arranged and fixedly connected to form a whole, a cavity is formed between the first block and the second block, and the positioning column partially extends into the cavity.

[0014] Compared with the prior art, the present invention comprises three blocks in total, namely a wire pressing block, a common ground block and a pin module, through the plug assembly. The wire pressing block is located on one side of the common ground block and is used as a pre-positioning structure of the coaxial cable. The pin module is located on the other side of the common ground block and is used as a pre-positioning structure of the probe. The wire pressing block, the common ground block and the pin module are a three-layer structure stacked top, middle and bottom, which is convenient for assembly and positioning of the plug assembly, thereby achieving the structural stability of the detector of the present invention and the stability of the detector when it is matched with the board-to-board connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional composite diagram of the detector embodiment 1 of the present invention;

[0016] Figure 2 yes Figure 1 A three-dimensional composite diagram of the detector of the present invention from another angle;

[0017] Figure 3 yes Figure 1 A partial three-dimensional composite diagram of the detector of the present invention;

[0018] Figure 4 yes Figure 1 A partial exploded perspective view of the detector of the present invention;

[0019] Figure 5 yes Figure 1 A partial three-dimensional composite diagram of the detector of the present invention from another angle;

[0020] Figure 6 yes Figure 1 A partial three-dimensional exploded view of the detector of the present invention from another angle;

[0021] Figure 7 yes Figure 1 A three-dimensional exploded view of the detector of the present invention;

[0022] Figure 8 yes Figure 1 A three-dimensional exploded view of the detector of the present invention from another angle;

[0023] Fig. 9 yes Figure 1 A bottom view of the detector of the present invention;

[0024] Fig.10 is along Fig. 9 Sectional view along line AA;

[0025] Fig.11 is along Fig. 9 Sectional view along the midline BB;

[0026] Fig.12 yes Fig.10A cross-sectional view of the detector of the present invention in an exploded state;

[0027] Fig.13 yes Figure 1 A top view of a portion of the structure of the detector of the present invention;

[0028] Fig.14 is along Fig.13 Cross-sectional view of the CC line and exploded state;

[0029] Fig.15 is along Fig.13 Cross-sectional view of the CC line and the combined state;

[0030] Fig.16 It is a three-dimensional composite diagram of the detector embodiment 2 of the present invention;

[0031] Fig.17 yes Fig.16 A three-dimensional composite diagram of the detector of the present invention from another angle;

[0032] Fig.18 yes Fig.16 A partial three-dimensional composite diagram of the detector of the present invention;

[0033] Fig.19 yes Fig.16 A partial exploded perspective view of the detector of the present invention;

[0034] Fig. 20 yes Fig.16 A partial three-dimensional composite diagram of the detector of the present invention from another angle;

[0035] Fig.21 yes Fig.16 A partial three-dimensional exploded view of the detector of the present invention from another angle;

[0036] Fig. 22 yes Fig.16 A bottom view of the detector of the present invention;

[0037] Fig.23 is along Fig. 22 Cross-sectional view of the combined state along the EE line;

[0038] Fig.24 is along Fig. 22 A cross-sectional view of the exploded state along the EE line;

[0039] Fig.25 yes Fig.16 A cross-sectional view of a partial structure of the detector of the present invention in an exploded state;

[0040] Fig.26 yes Fig.25 A cross-sectional view of the partial structure in the assembled state;

[0041] Fig. 27 yes Fig.16 Another partial structure of the detector of the present invention is shown in a cross-sectional view in an exploded state;

[0042] Fig.28 yes Fig.16 The coaxial cable in the detector of the present invention is shown Fig. 27 A cross-sectional view of another portion of the structural connection shown in ;

[0043] Fig.29 yes Fig.28 Enlarged view of part F. DETAILED DESCRIPTION

[0044] 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.

[0045] 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.

[0046] 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.

[0047] Please refer to Figures 1 to 29As shown, the present invention discloses a detector for testing the terminal performance of a board-to-board connector (not shown), which includes a floating connection mechanism and a plug assembly 6 fixed below the floating connection mechanism. The floating connection mechanism includes a flange 1, a fixed block 2, a positioning column 3 and a coil spring 4, wherein the positioning column 3 is one and connected to the center position of the flange 1, the coil spring 4 is one and sleeved outside the positioning column 3, and the opposite ends of the coil spring 4 are elastically abutted against the flange 1 and the fixed block 2 respectively, one of the top and the bottom of the positioning column 3 is movably connected to the flange 1 and the other of the top and the bottom of the positioning column 3 is fixedly connected to the fixed block 2 to float the fixed block 2 below the flange 1; the plug assembly 6 includes a wire pressing block 63, a common ground block 64 and a pin module 65, wherein the wire pressing block 63 is located on one side of the common ground block 64, and the pin module 65 is located on the other side of the common ground block 64, and the wire pressing block 63, the common ground block 64 and the pin module 65 are a stacked three-layer structure. The present invention uses the wire pressing block 63 located on one side of the common ground block 64 as a pre-positioning structure of the coaxial cable 5, and the needle module 65 located on the other side of the common ground block 64 as a pre-positioning structure of the probe 62, that is, the contact stability is increased by the needle module 65. The wire pressing block 63, the common ground block 64 and the needle module 65 are a stacked three-layer structure, which is convenient for assembly and positioning. Not only can the coaxial cable 5 with a large diameter be connected to a board-to-board connector with a small pitch for transfer through the internal stacked three-layer structure, but also the contact stability of the probe 62 when it is matched with the board-to-board connector is achieved, and the contact stability between the coaxial cable 5 and the probe 62 when the coaxial cable 5 is assembled into the plug 6 is achieved.

[0048] For further information, please refer to Figures 1 to 29 As shown, the probe 62 includes a high-frequency signal probe 621 that can be connected to the signal terminal of the board-to-board connector and a low-frequency ground probe 622 that can be connected to the ground terminal of the board-to-board connector. The common ground block 64 physically and electrically connects the low-frequency ground probe 622 as a whole, and the needle module 65 physically connects the high-frequency signal probe 621 and the low-frequency ground probe 622 as a whole. The material of the common ground block 64 is metal, for example: a copper block. The function of the common ground block 64 is to gather all the grounding (GND) points of the probes 62 onto a copper block to achieve the purpose of common ground. The function of the needle module 65 is to physically connect the probes 62 into a block, and to uniformly limit and fix the probes 62.

[0049] For further information, please refer to Figures 1 to 29As shown, the plug assembly 6 further includes a guide frame 61 fixed below the fixed block 2, and the common ground block 64 and the needle module 65 are accommodated in the guide frame 61, so that after the needle module 65 is assembled into the guide frame 61 in advance, the common ground block 64 is pressed on the top of the needle module 65 for assembly and positioning. The function of the guide frame 61 is to fix the plurality of probes 62 held by the needle module 65 below the floating connection mechanism, and to accommodate the common ground block 64 for achieving common ground.

[0050] For further information, please refer to Figures 1 to 29 As shown, the wire pressing block 63 is one of the ones accommodated in the guide frame 61 and exposed outside the guide frame 61. In Example 1 of the present invention (to be described in detail later), the wire pressing block 63 is accommodated in the guide frame 61; in Example 2 of the present invention (to be described in detail later), the wire pressing block 63 is exposed outside the guide frame 61. It should be noted that the disadvantage of the structure of the wire pressing block 63 in Example 1 is that the guide frame 61 needs to be stuffed with: three parts blocks, namely, the wire pressing block 63, the common block 64 and the needle module 65, which will result in a deeper processing depth of the guide frame 61 and high processing requirements. Therefore, Example 2 is introduced, in which the wire pressing block 63 is taken out of the guide frame 61 separately, which reduces the processing difficulty and improves stability and assemblability.

[0051] For further information, please refer to Figures 1 to 29 As shown, the present invention further includes a circuit board 66 and a coaxial cable 5 with a shielding shell. The low-frequency grounding probe 622 is electrically connected to the shielding shell corresponding to the coaxial cable 5 through the circuit board 66. The function of the circuit board 66 is to uniformly lead the ground (GND) signal to the shielding shell corresponding to the coaxial cable 5, and then connect it to the test instrument through the plug interface 50 at the other end of the coaxial cable 5.

[0052] For further information, please refer to Figures 1 to 29 As shown, the circuit board 66 is arranged on the side of the wire pressing block 63 away from the common ground block 64. That is, the circuit board 66 is arranged above the wire pressing block 63. Therefore, it can be understood to a certain extent that the circuit board 66, the wire pressing block 63, the common ground block 64 and the needle module 65 are a four-layer stacked structure.

[0053] For further information, please refer to Figures 1 to 29As shown, the third receiving portion 203 is provided on the side of the fixing block 2 facing the guide frame 61, and the circuit board 66 is exposed above the guide frame 61 and received in the third receiving portion 203. In consideration of compact structure, the present invention receives the circuit board 66 in the third receiving portion 203, which facilitates the fixing of the guide frame 61 and the fixing block 2, and realizes the assembly of the guide frame 61 and the fixing block 2 without a gap.

[0054] For further information, please refer to Figures 1 to 15 As shown, in Example 1, the top of the positioning column 3 is movably connected to the flange 1 and the bottom of the positioning column 3 is fixedly connected to the fixing block 2, so that the fixing block 2 is floatingly connected below the flange 1. In Example 1, one of the flange 1 and the positioning column 3 is provided with a positioning convex bump 10 and the other of the flange 1 and the positioning column 3 is provided with a positioning groove 30 that cooperates with the positioning convex bump 10, so as to achieve physical foolproofing during the assembly process.

[0055] For further information, please refer to Figures 16 to 29 As shown, in Example 2, the top of the positioning column 3 is fixedly connected to the flange 1 and the bottom of the positioning column 3 is movably connected to the fixing block 2, so that the fixing block 2 is floatingly connected below the flange 1. Example 2 changes the specific position of the movably connected position of the positioning column 3 in Example 1 (in Example 1, it is the top movably connected; in Example 2, it is the bottom movably connected). With this arrangement, the positioning installation mode of the positioning column 3 in Example 1 can be changed from upper compression to lower compression, providing better stability and assembly convenience.

[0056] Furthermore, Figures 16 to 29 In the embodiment 2 shown, the fixing block 2 includes a first block 21 and a second block 22 located on the same side of the flange 1, the first block 21 and the second block 22 are separately arranged and fixedly connected to form a whole, a cavity 20 is formed between the first block 21 and the second block 22, and the positioning column 3 partially extends into the cavity 20. When compressing from below, it is necessary to set the fixing block 2 to be a first block 21 and a second block 22, a total of two blocks, so as to limit the bottom of the positioning column 3. Such a setting can improve stability compared with the upper compression method in embodiment 1, in which only one end is positioned and the other end is not limited.

[0057] The following will be combined Figures 1 to 15 , Example 1 of the present invention is introduced in detail.

[0058] Please refer to Figures 1 to 15As shown, the present invention discloses a detector for testing the terminal performance of a board-to-board (B2B) connector. The detector first includes a floating connection mechanism. The floating connection mechanism includes a flange 1, a fixed block 2, a positioning column 3 and a coil spring 4. The positioning column 3 is one and is connected to the center position of the flange 1, and the coil spring 4 is one and is sleeved outside the positioning column 3. The opposite ends of the coil spring 4 are elastically abutted against the flange 1 and the fixed block 2 respectively, the top of the positioning column 3 is movably connected to the flange 1 and the bottom of the positioning column 3 is fixedly connected to the fixed block 2 to float the fixed block 2 below the flange 1. One of the flange 1 and the positioning column 3 is provided with a positioning convex hump 10 and the other of the flange 1 and the positioning column 3 is provided with a positioning groove 30 that cooperates with the positioning convex hump 10. The present invention sleeves a single coil spring 4 on a positioning column 3 at the center of the flange 1, and the present invention is fixedly connected to the flange 1 through the top of the positioning column 3 and the bottom of the positioning column 3 is movably connected to the fixed block 2. Therefore, the present invention changes the double spring in the prior art into a single spring, and through the cooperation between the positioning convex bump 10 and the positioning groove 30 (the positions of the positioning convex bump 10 and the positioning groove 30 can be interchanged), the positioning column 3 is accurately positioned when floating on the flange 1. In other words, the cooperation between the positioning convex bump 10 and the positioning groove 30 can achieve physical foolproofing, that is, if the convex bump is not aligned with the groove, the floating connection mechanism or even one side of the entire detector is in a tilted state, indicating that the installation is not in place and cannot be tested. In the case of a single spring floating connection, the present invention reduces the occurrence of the skew of the positioning column 1 through the physical foolproofing mechanism, thereby improving the stability of the test and the test yield.

[0059] Please refer to Figures 3 to 6 As shown, the positioning column 3 includes a base plate portion 32 and a column portion 31 extending in one piece. The flange 1 has a first top surface 11 facing away from the fixed block 2, a first bottom surface 12 facing the fixed block 2, and a through hole 110 connecting the first top surface 11 and the first bottom surface 12, and the column portion 31 passes through the through hole 110 from the first top surface 11 of the flange 1 toward the first bottom surface 12. The base plate portion 32 is movably abutted against the first top surface 11 of the flange 1, and the end of the column portion 31 away from the base plate portion 32 is fixedly connected to the fixed block 2. Such a configuration facilitates the assembly of the positioning column 3 from the top of the flange 1, and because the positioning column 3 is not fixed to the flange 1, the assembled positioning column 3 can float above the flange 1, so the fixed block 2 fixed to the bottom of the positioning column 3 is floatingly connected to the bottom of the flange 1.

[0060] Please refer to Figure 4 and Figure 6 As shown, the first top surface 11 of the flange 1 is formed with a recessed portion 111 for the base plate portion 32 to be embedded in. The positioning convex bump 10 is located on the wall surface below the recessed portion 111, and the base plate portion 32 is embedded in the recessed portion 111 to provide a top-down pre-positioning, so as to facilitate the alignment and cooperation between the positioning convex bump 10 and the positioning groove 30.

[0061] Please refer to Figure 4 As shown, the substrate portion 32 is a cross-shaped blade including four sheets 320. The four sheets 320 include a first sheet 3201, a second sheet 3202, a third sheet 3203 and a fourth sheet 3204 arranged in sequence in a clockwise direction. It can also be understood that the first sheet 3201 and the third sheet 3203 extend oppositely in a first direction, and the second sheet 3202 and the fourth sheet 3204 extend oppositely in a second direction perpendicular to the first direction. Correspondingly, the recessed portions 111 are provided with four and corresponding to each sheet 320, and the four recessed portions 111 are distributed around the through hole 110. In this way, when the substrate portion 32 is embedded in the recessed portions 111 to provide pre-positioning from top to bottom, only one sheet 320 is aligned with one of the recessed portions 111, and then assembly can be performed, otherwise it cannot be assembled. Therefore, the present invention provides the accuracy of assembly positioning.

[0062] Please refer to Figure 4 As shown, in a specific embodiment, the positioning groove 30 is provided on one of the sheet bodies 320, for example, on the fourth sheet body 3204. Correspondingly, the positioning convex bump 10 also only needs to be provided on one of the recessed portions 111. Of course, in other embodiments of the present invention, the number of the positioning convex bump 10 and the positioning groove 30 can also be two, three, and so on. Preferably, the positioning convex bump 10 and the positioning groove 30 can correspond one to one; optionally, the number of the positioning grooves 30 is greater than the number of the positioning convex bumps 10, except that the redundant positioning grooves 30 are left vacant and unused. In summary, the positioning groove 30 is provided on at least one of the sheet bodies 320 of the substrate portion 32, and the positioning convex bump 10 is located on the lower wall surface of at least one of the recessed portions 111.

[0063] Please continue to refer to Figure 4 As shown, a flange portion 112 is provided between two adjacent recessed portions 111, a shearing groove cavity 3200 is formed between two adjacent sheet bodies 320, and the flange portion 112 is matched with the shearing groove cavity 3200 in a one-to-one correspondence. Since the base plate portion 32 is a cross-blade shape including four sheet bodies 320 in total, it can be known that the flange portion 112 is matched with the shearing groove cavity 3200 in a one-to-one correspondence, which is convenient for assembly.

[0064] Please refer to Figure 4 and Figure 6 Combined with Fig.13 As shown, one side of any of the flange portions 112 includes a first guiding inclined surface 11201 extending obliquely from the first top surface 11 toward the first bottom surface 12, and the other side includes a second guiding inclined surface 11202 extending obliquely from the first top surface 11 toward the first bottom surface 12. The first groove edge portion 32001 and the second groove edge portion 32002 are respectively in contact with and guided by the first guiding inclined surface 11201 and the second guiding inclined surface 11202, so that the flange portion 112 completely enters the shear groove cavity 3200. In other words, when the flange portion 112 and the shear groove cavity 3200 are matched one by one, the inclined surface is used as a guide, so it is convenient for assembly.

[0065] Please continue to refer to Figure 4 and Figure 6 Combined with Fig.13 As shown, one side of any shear groove cavity 3200 is a first groove edge portion 32001 and the other side is a second groove edge portion 32002, and the angle between the first groove edge portion 32001 and the second groove edge portion 32002 is 90 degrees. The angle of 90 degrees is conducive to the molding and alignment assembly of the product.

[0066] Please refer to Figures 1 to 15 As shown, the detector of the present invention also includes a coaxial cable 5 and a plug assembly 6. The plug assembly 6 includes a guide frame 61 fixed below the fixed block 2 and a probe 62 arranged in the guide frame 61. The fixed block 2 is a whole block and has a second top surface 21 facing the flange 1 and a second bottom surface 22 facing away from the flange 1. The guide frame 61 is fixedly mounted on the second bottom surface 22 of the fixed block 2 by bolts. The probe 62 includes a high-frequency signal probe 621 that can be connected to the signal terminal of the board-to-board connector. The coaxial cable 5 passes through the flange 1, the positioning column 3, and the fixed block 2 to connect with the high-frequency signal probe 621. It is emphasized here that, in general, the coaxial cable 5 is required to ensure the accuracy of the test when testing high-frequency performance. However, due to the spacing limit of the board-to-board connector (0.35 / 0.3mm). Conventional coaxial cables 5 are all φ0.8mm. Therefore, a probe 62 is required for conversion. The purpose of the detector of the present invention is to use the pogopin line to contact the contacts of the board-to-board connector, and then connect the coaxial cable 5 with the high-frequency signal probe 621 in the probe 62, and the high-frequency signal probe 621 is connected to the center conductor corresponding to the coaxial cable 5 to achieve the purpose of variable distance.

[0067] Please refer to Fig.15As shown, the detector of the present invention also includes a common ground block 64 and a circuit board 66, the probe 62 includes a low-frequency ground probe 622 that can be connected to the ground terminal of the board-to-board connector, the common ground block 64 physically and electrically connects the low-frequency ground probe 622 as a whole, and the low-frequency ground probe 622 is electrically connected to the shielding shell of the corresponding coaxial cable 5 through the circuit board 66. Usually, not only the high-frequency signal probe 621 is connected to the center conductor of the corresponding coaxial cable 5 to transmit the high-frequency signal, but generally speaking, the electrical performance is a test parameter. Assume that there are three points, pogo pin1, pogo pin2, and pogo pin3. The pogo pin2 point needs to test the high-frequency performance. Then usually pogo pin1 and pogo pin3 are both ground (GND) signals. The ground (GND) signal also needs to be connected to the test instrument, that is, the network analyzer (network analyzer). Therefore, the probe 62 includes a low-frequency ground probe 622 that can be connected to the ground terminal of the board-to-board connector. The purpose of setting the common ground block 64 is to physically and electrically connect the low-frequency ground probe 622 as a whole. Usually, the material of the common ground block 64 is metal, such as a copper block. Because the function of the common ground block 64 is to collect all the pogo pin points for grounding (GND) on a copper block to achieve the purpose of common ground. However, it is also necessary to uniformly lead out the ground (GND) signal collected on a copper block. The function of the circuit board 66 is to uniformly lead the ground (GND) signal to the shielding shell corresponding to the coaxial cable 5, and then connect it to the test instrument through the plug interface 50 at the other end of the coaxial cable 5.

[0068] Please refer to Fig.14 and Fig.15 As shown, preferably, the detector of the present invention may also include a wire pressing block 63 located above the common ground block 64 and a needle module 65 located below the common ground block 64. The wire pressing block 63, the common ground block 64 and the needle module 65 form a "sandwich" structure 6345 with three layers: upper, middle and lower. The function of the wire pressing block 63 is to uniformly limit and fix the coaxial cable 5, and the function of the needle module 65 is to uniformly limit and fix the probe 62. The terminal spacing of the board-to-board connector is limited to 0.35 / 0.3mm, while the wire diameter of the conventional coaxial cable 5 is 0.8mm. Through the "sandwich" structure 6345, the coaxial cable 5 with a large diameter can be indirectly connected, i.e. transferred to a board-to-board connector with a small spacing.

[0069] It should be pointed out that the fixed block 2 in the present invention is a whole block, and the fixed block 2 and the guide frame 61 are fixedly connected up and down. That is, the guide frame 61 is fixedly connected to the bottom of the second block 22 by bolts. The common block 64 and the needle module 65 are accommodated in the guide frame 61, and the wire pressing block 63 can be accommodated in the guide frame 61 or exposed outside the guide frame 61. The circuit board 66 is arranged above the wire pressing block 63; for the sake of compact structure, the circuit board 66 is accommodated in the third accommodating portion 203 below the second block 22.

[0070] Embodiment 1 of the present invention is to sleeve a single coil spring 4 on a positioning column 3 at the center of the flange 1, and the present invention is fixedly connected to the flange 1 through the top of the positioning column 3 and the bottom of the positioning column 3 is movably connected to the fixed block 2. Therefore, the present invention changes the double spring in the prior art into a single spring, and through the cooperation between the positioning convex 10 and the positioning groove 30 (the positions of the positioning convex 10 and the positioning groove 30 can be interchanged), the positioning column 3 is accurately positioned when floating on the flange 1. In other words, the cooperation between the positioning convex 10 and the positioning groove 30 can achieve physical foolproofing, that is, if the convex 10 is not aligned with the groove, the floating connection mechanism or even one side of the entire detector is in a tilted state, indicating that the installation is not in place and cannot be tested. In the case of a single spring floating connection, the present invention reduces the occurrence of the skew of the positioning column 1 through the physical foolproofing mechanism, thereby improving the stability of the test and the test yield.

[0071] The following will be combined Figures 16 to 29 , Example 2 of the present invention is introduced in detail.

[0072] Please refer to Figures 16 to 29As shown, the present invention discloses a detector for testing the terminal performance of a board-to-board (B2B) connector. The detector first includes a floating connection mechanism. The floating connection mechanism includes a flange 1, a fixed block 2, a positioning column 3 and a coil spring 4, wherein the positioning column 3 is one and connected to the center of the flange 1. The coil spring 4 is one and is sleeved outside the positioning column 3, and the opposite ends of the coil spring 4 are elastically abutted against the flange 1 and the fixed block 2 respectively. The top of the positioning column 3 is fixedly connected to the flange 1 and the bottom of the positioning column 3 is movably connected to the fixed block 2, so that the fixed block 2 is floatingly connected below the flange 1. The present invention sleeves a single coil spring 4 on the positioning column 3 at the center of the flange 1, and the present invention is fixedly connected to the flange 1 by the top of the positioning column 3 and the bottom of the positioning column 3 is movably connected to the fixed block 2. Therefore, the present invention changes the double spring in the prior art into a single spring, and changes the upper compression in the prior art into the lower compression. When the fixing block 2 compresses the coil spring 4 upward, the coil spring 4 can be evenly stressed, thereby reducing the occurrence of poor resetting of the coil spring 4 in the present invention, improving the stability of the test, and improving the test yield.

[0073] Please refer to Figures 18 to 21 As shown, the fixing block 2 includes a first block 21 and a second block 22 located on the same side of the flange 1, and the first block 21 and the second block 22 are separately arranged and fixedly connected to form a whole. Because the fixing block 2 is upwardly compressing the coil spring 4, it is necessary to consider the assembly and positioning of the fixing block 2 and the positioning column 3. Therefore, the present invention adopts the first block 21 and the second block 22 that are separately arranged and fixedly connected to form a whole, and easily and conveniently realizes the purpose of assembling and positioning the positioning column 3 on the fixing block 2.

[0074] Please refer to Figure 25 to Figure 26 As shown, a cavity 20 is formed between the first block 21 and the second block 22, and the positioning column 3 partially extends into the cavity 20. It can be understood that the position of the flange 1 is fixed, and the bottom of the positioning column 3 is movably connected to the fixed block 2, and a space for movement is required. Therefore, the present invention adopts the cavity 20 formed between the first block 21 and the second block 22, and the positioning column 3 partially extends into the cavity 20 and moves up and down relative to the fixed block 2. It should be emphasized here that the movement here is relative, and it is the fixed block 2 that moves in actual detection.

[0075] Please refer to Figure 23 to Figure 26As shown, the positioning column 3 includes a column portion 31 with an axial direction and a limiting portion 32 located at the bottom end of the column portion 31. The column portion 31 is a hollow column that passes through the column portion 31 up and down along the axial direction, so that the coaxial cable 5 can pass through the column portion 31 up and down; the limiting portion 32 is an annular plate and extends from the bottom end of the column portion 31 in a radial direction perpendicular to the axial direction, so that the limiting portion 32 extends into the cavity 20 for limiting.

[0076] Please refer to Figures 16 to 21 As shown, compared with the second block 22, the first block 21 is closer to the flange 1. Therefore, the first block 21 needs to be provided with a through hole 210. In this way, the limiting portion 32 is first limited in the cavity 20 and the first block 21 and the second block 22 are fixed by bolts, the column portion 31 passes through the through hole 210 from bottom to top, and then the coil spring 4 is sleeved on the positioning column 3, and finally fixed to the flange 1 above.

[0077] Please refer to Fig.19 , Fig.21 and Fig.23 As shown, the first block 21 has a first top surface 211 and a first bottom surface 212 arranged oppositely. The first block 21 is recessed upward from the first bottom surface 212 toward the first top surface 211 to form a first receiving portion 201. The second block 22 has a second top surface 221 and a second bottom surface 222 arranged oppositely. The second block 22 is recessed downward from the second top surface 221 toward the second bottom surface 222 to form a second receiving portion 202. Fig.24 As shown, the first receiving portion 201 and the second receiving portion 202 cooperate to form the cavity 20. In this configuration, compared with one of the first block 21 and the second block 22 forming the cavity 20, both the upper and lower blocks (the first block 21 and the second block 22) are provided with a recessed receiving portion (201 or 202), which facilitates the forming of the cavity 20 and the positioning of the limiting portion 32.

[0078] Please refer to Fig.23 and Fig.24As shown, it can be understood that, in the compressed state of the coil spring 4, the limiting portion 32 can form a downward abutment inside the second receiving portion 202 to prevent the limiting portion 32 from falling out of the second block 22 in the fixed block 2; in the elastic force release state of the coil spring 4, the limiting portion 32 can form an upward abutment inside the first receiving portion 201 to prevent the limiting portion 32 from falling out of the first block 21 in the fixed block 2. Therefore, the limiting portion 32 is always restricted in the movable fixed block 2 and will not fall out of the fixed block 2.

[0079] Please refer to Figures 16 to 29 As shown, the detector of the present invention also includes a coaxial cable 5 and a plug assembly 6. The plug assembly 6 includes a guide frame 61 and a probe 62 arranged in the guide frame 61, and the probe 62 includes a high-frequency signal probe 621 that can be connected to the signal terminal of the board-to-board connector, and the high-frequency signal probe 621 is connected to the center conductor of the corresponding coaxial cable 5. It is emphasized here that, in general, the coaxial cable 5 needs to be used to ensure the accuracy of the test when testing high-frequency performance. However, due to the spacing limitation of the board-to-board connector (0.35 / 0.3mm). Conventional coaxial cables 5 are all φ0.8mm. Therefore, it is necessary to use a probe 62 for conversion. The purpose of the detector of the present invention is to contact the contacts of the board-to-board connector with a pogopin line, and then connect the coaxial cable 5 to the high-frequency signal probe 621 in the probe 62, and the high-frequency signal probe 621 is connected to the center conductor of the corresponding coaxial cable 5 to achieve the purpose of variable distance.

[0080] Please refer to FIG14 , the detector of the present invention also includes a common ground block 64. Usually, not only is the high-frequency signal probe 621 connected to the center conductor of the corresponding coaxial cable 5 to transmit the high-frequency signal, but the electrical performance is generally a test parameter. Assume three points, pogo pin 1, pogo pin 2, and pogo pin 3. The pogo pin 2 point needs to test the high-frequency performance. Then usually pogo pin 1 and pogo pin 3 are both ground (GND) signals. The ground (GND) signal also needs to be connected to the test instrument, that is, the network analyzer (network analyzer). Therefore, the probe 62 includes a low-frequency ground probe 622 that can be connected to the ground terminal of the board-to-board connector. The purpose of setting the common ground block 64 is to physically and electrically connect the low-frequency ground probe 622 as a whole. Usually, the material of the common ground block 64 is metal, such as a copper block.

[0081] Please refer to Figure 27 to Figure 29As shown, the detector of the present invention also includes a circuit board 66. The low-frequency grounding probe 622 is electrically connected to the shielding shell corresponding to the coaxial cable 5 through the circuit board 66. Because the function of the common ground block 64 is to gather all the pogopin points for grounding (GND) onto a copper block to achieve the purpose of common ground. However, it is also necessary to uniformly lead out the ground (GND) signal gathered on a copper block. The function of the circuit board 66 is to uniformly lead the ground (GND) signal to the shielding shell corresponding to the coaxial cable 5, and then connect it to the test instrument through the plug interface 50 at the other end of the coaxial cable 5.

[0082] Please refer to Figure 27 to Figure 29 As shown, preferably, the detector of the present invention may also include a wire pressing block 63 located above the common ground block 64 and a needle module 65 located below the common ground block 64. The wire pressing block 63, the common ground block 64 and the needle module 65 form a "sandwich" structure 6345 with three layers: upper, middle and lower. The function of the wire pressing block 63 is to uniformly limit and fix the coaxial cable 5, and the function of the needle module 65 is to uniformly limit and fix the probe 62. The terminal spacing of the board-to-board connector is limited to 0.35 / 0.3mm, while the wire diameter of the conventional coaxial cable 5 is 0.8mm. Through the "sandwich" structure 6345, the coaxial cable 5 with a large diameter can be indirectly connected, i.e. transferred to a board-to-board connector with a small spacing.

[0083] It should be pointed out that the first block 21, the second block 22 and the guide frame 61 are fixedly connected in sequence at the top, the middle and the bottom. Therefore, the second block 22 is connected between the first block 21 and the guide frame 61. Specifically, the first block 21 and the second block 22 are fixedly connected by bolts, and the guide frame 61 and the second block 22 are fixedly connected by bolts. The common block 64 and the needle module 65 are accommodated in the guide frame 61, and the wire pressing block 63 can be accommodated in the guide frame 61 or exposed outside the guide frame 61. The circuit board 66 is arranged above the wire pressing block 63; for the sake of compact structure, the circuit board 66 is accommodated in the third accommodation portion 203 below the second block 22.

[0084] Embodiment 2 of the detector of the present invention includes an inverted floating mechanism, wherein the inverted means that the bottom of the positioning column 3 is first movably connected to the fixed block 2, and then the top of the positioning column 3 is fixedly connected to the flange 1, the positioning column 3 is assembled from bottom to top and the positioning column 3 is kept in an inverted state during the test; the floating means that the fixed block 2 is floatingly connected below the flange 1, and the cavity 20 cooperates with the positioning column 3 and the coil spring 4 to provide floating space. Because the present invention places the only coil spring 4 in the center, and the test area is at the center of the coil spring 4, the moment in the horizontal direction (lateral direction, i.e., X direction) is equal, and there will be no uneven force. Therefore, the present invention changes the double spring in the prior art into a single spring, and changes the upper compression in the prior art into the lower compression. When the fixed block 2 compresses the coil spring 4 upward, the coil spring 4 in the present invention, i.e., the single spring, can be evenly stressed, which reduces the occurrence of poor reset of the coil spring 4 in the present invention, improves the stability of the test, and improves the test yield.

[0085] In summary, both embodiments of the present invention use the wire pressing block 63 located on one side of the common ground block 64 as a pre-positioning structure of the coaxial cable 5, that is, the contact stability of the coaxial cable 5 is increased by the wire pressing block 63; both embodiments of the present invention use the needle module 65 located on the other side of the common ground block 64 as a pre-positioning structure of the probe 62, that is, the contact stability of the probe 62 is increased by the needle module 65. The wire pressing block 63, the common ground block 64 and the needle module 65 are a three-layer structure stacked in the upper, middle and lower parts, and the plug assembly 6 of the present invention is easy to assemble and position; the present invention can not only connect the coaxial cable 5 with a large diameter to the board-to-board connector with a small pitch to achieve transfer through the internally stacked three-layer structure, but also realize the contact stability of the probe 62 when it is matched with the board-to-board connector, and the contact stability between the coaxial cable 5 and the probe 62 when the coaxial cable 5 is assembled into the plug assembly 6.

[0086] 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 the present invention should be based on the technical personnel in the relevant technical field. Although the present invention has been described in detail in this specification with reference to the above implementation modes, the 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 detector for testing the terminal performance of a board-to-board connector, characterized in that: It comprises a floating connection mechanism and a plug assembly (6) fixed below the floating connection mechanism; The floating connection mechanism comprises a flange (1), a fixing block (2), a positioning column (3) and a coil spring (4); the positioning column (3) is one and connected to the center of the flange (1); the coil spring (4) is one and sleeved outside the positioning column (3); opposite ends of the coil spring (4) are elastically abutted against the flange (1) and the fixing block (2) respectively; one of the top and the bottom of the positioning column (3) is movably connected to the flange (1) and the other of the top and the bottom of the positioning column (3) is fixedly connected to the fixing block (2) so that the fixing block (2) is floatingly connected below the flange (1); The plug assembly (6) comprises a wire pressing block (63), a common ground block (64) and a needle module (65); the wire pressing block (63) is located on one side of the common ground block (64), and the needle module (65) is located on the other side of the common ground block (64); the wire pressing block (63), the common ground block (64) and the needle module (65) are a stacked three-layer structure.

2. The detector according to claim 1, characterized in that: The plug assembly (6) further comprises a high-frequency signal probe (621) that can be connected to the signal terminal of the board-to-board connector and a low-frequency ground probe (622) that can be connected to the ground terminal of the board-to-board connector, the common ground block (64) physically and electrically connects the low-frequency ground probe (622) as a whole, and the needle module (65) physically connects the high-frequency signal probe (621) and the low-frequency ground probe (622) as a whole.

3. The detector according to claim 2, characterized in that: The plug assembly (6) further comprises a guide frame (61) fixed below the fixed block (2), and the common ground block (64) and the needle module (65) are accommodated in the guide frame (61).

4. The detector according to claim 3, characterized in that: The wire pressing block (63) is either accommodated in the guide frame (61) or exposed outside the guide frame (61).

5. The detector according to claim 2, characterized in that: It also includes a circuit board (66) and a coaxial cable (5) having a shielding shell, and the low-frequency grounding probe (622) is electrically connected to the shielding shell corresponding to the coaxial cable (5) through the circuit board (66).

6. The detector according to claim 5, characterized in that: The circuit board (66) is arranged on a side of the wire pressing block (63) away from the common ground block (64).

7. The detector according to claim 5, characterized in that: A receiving portion (203) is provided on one side of the fixing block (2) facing the guide frame (61); the circuit board (66) is exposed above the guide frame (61) and is received in the receiving portion (203).

8. The detector according to claim 1, characterized in that: The top of the positioning column (3) is movably connected to the flange (1) and the bottom of the positioning column (3) is fixedly connected to the fixing block (2) so that the fixing block (2) is floatingly connected below the flange (1).

9. The detector according to claim 1, characterized in that: The top of the positioning column (3) is fixedly connected to the flange (1) and the bottom of the positioning column (3) is movably connected to the fixing block (2) so that the fixing block (2) is floatingly connected below the flange (1).

10. The detector according to claim 9, characterized in that: The fixing block (2) comprises a first block (21) and a second block (22) located on the same side of the flange (1); the first block (21) and the second block (22) are separately arranged and fixedly connected to form a whole; a cavity (20) is formed between the first block (21) and the second block (22); the positioning column (3) partially extends into the cavity (20).

Images