Floating connection mechanism and detector

Abstract

A floating connecting mechanism comprises a flange, a fixing block, a positioning column and a spiral spring, the number of the positioning column is one, the positioning column is connected to the center position of the flange, the number of the spiral spring is one, the positioning column is sleeved with the spiral spring, the two opposite ends of the spiral spring are elastically connected with the flange and the fixing block in an abutting mode respectively, and the fixing block is arranged on the flange. The top of the positioning column is fixedly connected with the flange, and the bottom of the positioning column is movably connected with the fixing block, so that the fixing block is connected to the lower portion of the flange in a floating mode. The invention further relates to a detector which comprises the floating connecting mechanism. According to the invention, the test stability is improved, and the test yield is improved.

Description

Technical Field

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

[0002] A detector in the prior art includes a coil spring and a plug under the coil spring. The plug includes 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 needs to have two equal-height positioning columns and the positioning columns have the function of reset and positioning, the requirements for processing and assembly are relatively high. If the processing or assembly is not in place, it is easy to cause the coil spring to reset poorly, get stuck, reset poorly, etc. Summary of the invention

[0003] The object of the present invention is to provide a floating connection mechanism and a detector, which improve the stability of the test and increase the test yield.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical solution 1: a floating connection mechanism, including 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, the top of the positioning column is fixedly connected to the flange and the bottom of the positioning column is movably connected to the fixed block, so that the fixed block is floatingly connected below the flange.

[0005] As a further improved technical solution 1 of the present invention, the fixing block includes a first block and a second block located on the same side of the flange, and the first block and the second block are separately arranged and fixedly connected to form a whole.

[0006] As a further improved technical solution 1 of the present invention, a cavity is formed between the first block and the second block, and the positioning column partially extends into the cavity.

[0007] As a further improved technical solution of the present invention, the positioning column includes a column portion with an axial direction and a limiting portion located at the bottom end of the column portion, the column portion is a hollow column that passes through up and down along the axial direction, and the limiting portion is an annular plate and extends from the bottom end of the column portion along a radial direction perpendicular to the axial direction.

[0008] As a further improved technical solution 1 of the present invention, compared with the second block, the first block is closer to the flange, the first block is provided with a through hole, the column part passes through the through hole from bottom to top, and the limiting part is limited in the cavity.

[0009] As a further improved technical solution 1 of the present invention, the first block has a first top surface and a first bottom surface arranged oppositely, and the first block is recessed upward from the first bottom surface toward the first top surface to form a first receiving portion; the second block has a second top surface and a second bottom surface arranged oppositely, and the second block is recessed downward from the second top surface toward the second bottom surface to form a second receiving portion, and the first receiving portion and the second receiving portion cooperate to form the cavity.

[0010] As a further improved technical solution 1 of the present invention, when the coil spring is in a compressed state, the limiting portion can form a downward abutment inside the second housing portion; when the elastic force of the coil spring is released, the limiting portion can form an upward abutment inside the first housing portion.

[0011] To achieve the above-mentioned objectives, the present invention adopts the following technical solution 2: a detector for testing the terminal performance of a board-to-board connector, which includes a coaxial cable, a plug assembly and the floating connection mechanism as described above, the plug assembly includes a guide frame fixed under the fixed block and a probe arranged in the guide frame, the probe includes a high-frequency signal probe that can be connected to the signal terminal of the board-to-board connector, and the high-frequency signal probe is physically and electrically connected to the center conductor of the corresponding coaxial cable.

[0012] As a further improved technical solution 2 of the present invention, it also includes a common ground block, and the probe includes a low-frequency ground probe that can be connected to the ground terminal of the board-to-board connector, and the common ground block physically and electrically connects the low-frequency ground probe into one.

[0013] As a further improved technical solution 2 of the present invention, it also includes a circuit board, and the low-frequency grounding probe is electrically connected to the shielding shell corresponding to the coaxial cable through the circuit board.

[0014] Compared with the prior art, the present invention arranges a single coil spring onto a positioning column at the center of the flange, and the top of the positioning column is fixedly connected to the flange and the bottom of the positioning column is movably connected to the fixed block. Therefore, the present invention changes the double springs in the prior art into a single spring, and changes the upper compression in the prior art into a lower compression. During compression, the coil spring can be evenly stressed, which reduces the occurrence of poor resetting of the coil spring, improves the stability of the test, and improves the test yield. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a three-dimensional composite diagram of the detector of the present invention from another angle;

[0017] Figure 3 It is a partial three-dimensional composite diagram of the detector of the present invention;

[0018] Figure 4 is a partial three-dimensional exploded view of the detector of the present invention;

[0019] Figure 5 It is a partial three-dimensional composite diagram of the detector of the present invention from another angle;

[0020] Figure 6 It is a partial three-dimensional exploded view of the detector of the present invention from another angle;

[0021] Figure 7 is a bottom view of the detector of the present invention;

[0022] Figure 8 is along Figure 7 Sectional view of the AA line and the combined state;

[0023] Fig. 9 is along Figure 7 A cross-sectional view of the AA line and the exploded state;

[0024] Fig.10 It is a cross-sectional view of a partial structure of the detector of the present invention in an exploded state;

[0025] Fig.11 yes Fig.10 A cross-sectional view of the partial structure in the assembled state;

[0026] Fig.12 It is a cross-sectional view of another part of the structure of the detector of the present invention in an exploded state;

[0027] Fig.13 The coaxial cable and Fig.12 A cross-sectional view of another portion of the structural connection shown;

[0028] Fig.14 yes Fig.13 Enlarged view of part B. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] Please refer to Figures 1 to 14As 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.

[0033] Please refer to Figures 3 to 6 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.

[0034] Please refer to Figure 10 to Figure 11 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.

[0035] Please refer to Figures 8 to 11As 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.

[0036] Please refer to Figures 1 to 6 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.

[0037] Please refer to Figure 4 , Figure 6 and Figure 8 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. 9 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 recessed receiving portions 201, 202, which facilitates the forming of the cavity 20 and the positioning of the limiting portion 32.

[0038] Please refer to Figure 8 and Fig. 9 As 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.

[0039] Please refer to Figures 1 to 14 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 limit of the board-to-board connector (0.35 / 0.3mm). Conventional coaxial cables 5 are all φ0.8mm. Therefore, a probe (pogopin) is required for switching. 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.

[0040] 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.

[0041] Please refer to Figure 12 to Figure 14 As 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.

[0042] Please refer to Figure 12 to Figure 14As 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 (pogo pin). The terminal spacing of the board-to-board connector is limited to 0.35 / 0.3mm, while the conventional coaxial line 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.

[0043] 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.

[0044] In summary, the detector of the present invention is an inverted floating mechanism for testing a board-to-board connector. The inversion mentioned herein refers to first movably connecting the bottom of the positioning column 3 with the fixed block 2, and then fixing the top of the positioning column 3 with 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 mentioned herein refers to the floating connection of the fixed block 2 below the flange 1, and the cavity 20 cooperates with the positioning column 3 and the coil spring 4 to provide a 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.

[0045] 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 floating connection mechanism, characterized in that: The invention 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); the opposite ends of the coil spring (4) are elastically abutted against the flange (1) and the fixing 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 fixing block (2), so that the fixing block (2) is floatingly connected below the flange (1).

2. The floating connection mechanism according to claim 1, 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 arranged separately and fixedly connected to form a whole.

3. The floating connection mechanism according to claim 2, characterized in that: A cavity (20) is formed between the first block (21) and the second block (22), and a portion of the positioning column (3) extends into the cavity (20).

4. The floating connection mechanism according to claim 3, characterized in that: The positioning column (3) comprises a columnar portion (31) having an axial direction and a limiting portion (32) located at the bottom end of the columnar portion (31); the columnar portion (31) is a hollow column that passes through the columnar portion up and down along the axial direction; the limiting portion (32) is an annular plate and extends from the bottom end of the columnar portion (31) along a radial direction perpendicular to the axial direction.

5. The floating connection mechanism according to claim 4, characterized in that: Compared with the second block (22), the first block (21) is closer to the flange (1), the first block (21) is provided with a through hole (210), the column part (31) passes through the through hole (210) from bottom to top, and the limiting part (32) is limited in the cavity (20).

6. The floating connection mechanism according to claim 5, characterized in that: The first block (21) has a first top surface (211) and a first bottom surface (212) which are arranged oppositely, and 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) which are arranged oppositely, and 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), and the first receiving portion (201) and the second receiving portion (202) cooperate to form the cavity (20).

7. The floating connection mechanism according to claim 6, characterized in that: When the coil spring (4) is in a compressed state, the limiting portion (32) can form a downward abutment inside the second receiving portion (202); when the elastic force of the coil spring (4) is released, the limiting portion (32) can form an upward abutment inside the first receiving portion (201).

8. A detector for testing the terminal performance of a board-to-board connector, characterized in that: It comprises a coaxial cable (5), a plug assembly (6) and a floating connection mechanism as described in any one of claims 1 to 7 above, wherein the plug assembly (6) comprises a guide frame (61) fixed below the fixed block (2) and a probe (62) arranged in the guide frame (61), and the probe (62) comprises 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 physically and electrically connected to the center conductor of the corresponding coaxial cable (5).

9. The detector according to claim 8, characterized in that: It also includes a common ground block (64), the probe (62) includes a low-frequency ground probe (622) that can be connected to the ground terminal of the board-to-board connector, and the common ground block (64) physically and electrically connects the low-frequency ground probe (622) into one.

10. The detector according to claim 9, characterized in that: It also includes a circuit board (66), 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).

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