Inter-board high-speed connector with misplug prevention function

Abstract

The utility model discloses an inter-board high-speed connector with an anti-misplug function. The inter-board high-speed connector comprises a printed board welding plug and a printed board welding socket which is adaptively connected with the printed board welding plug. The installation mode of the plug and the socket is printed board welding, during use, the plug and the socket are fixed with the installation board through the special-shaped guide pin and the special-shaped guide sleeve at the two ends, then pin welding is carried out, and during insertion, axial insertion in place is carried out through the insertion interface. According to the inter-board high-speed connector with the misplug prevention function, the special-shaped guide pins are used for positioning before insertion, and the misplug prevention function is realized through different fillets on the shell; the differential contact element for transmitting high-speed signals adopts a multi-point contact stranded wire contact pin structure, so that the insertion and extraction are soft, and the connection is reliable. The connector provided by the utility model has the characteristics of novel structure, soft plugging and unplugging, reliable connection, misplug prevention and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and in particular to an inter-board high-speed connector with an anti-misinsertion function, which is mainly suitable for inter-board transmission circuits with small space, high density and high speed, and is widely used in the fields of aviation, aerospace, navigation, weapons, electronics and communications. Background Art

[0002] With the systematization and integration requirements of the whole machine, the signal transmission system begins to demand a large number of miniaturized and integrated connectors. In order to achieve high-reliability connectors with small size, light weight, high density, multi-channel differential signal integration, vibration resistance, fast plugging and other characteristics, more and more engineers are favored. Therefore, it is very necessary to design inter-board high-speed printed circuit connectors with a transmission rate of 3.125Gbps. However, the technical bottlenecks of existing high-speed connectors are: first, the size of existing high-speed connectors cannot meet the space requirements of the whole machine; second, the existing high-speed connectors, so-called cable connectors, cannot meet the requirements of inter-board transmission. Summary of the invention

[0003] In order to overcome the problems existing in the above-mentioned prior art, the purpose of the utility model is to provide a high-speed inter-board connector with an anti-misinsertion function, which has the characteristics of small size, light weight, high contact density, low cost, high-speed transmission, etc., and solves the problems of large size and signal failure of existing high-speed connectors.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An inter-board high-speed connector with an anti-misinsertion function comprises a printed board welding plug and a printed board welding socket adapted to be connected to the welding printed board plug;

[0006] The printed circuit board welding plug comprises a plurality of twisted wire flexible pin contacts 1 and a plug sealant 4 for fixing the twisted wire flexible pin contacts 1, a plug mounting plate 2 for positioning the twisted wire flexible pin contacts 1, a plug housing 3 comprising a printed circuit board mounting hole and wrapping the plug mounting plate 2, special-shaped guide pins 5 located at both ends of the plug housing 3 for realizing plug-in guidance to prevent mis-insertion and printed circuit board installation, and a plug nut 8, a plug flat washer 6 and a plug elastic washer 7 required for printed circuit board installation;

[0007] The twisted wire flexible pin contact pieces 1 are symmetrically distributed in the plug mounting plate 2, and are positioned through the various holes of the plug mounting plate 2. The four twisted wire flexible pin contact pieces 1 form a U-shaped arrangement, and the diagonal lines form a pair of differential contacts. After the twisted wire flexible pin contact pieces 1 are positioned on the plug mounting plate 2, they are fixed to the plug housing 3 by pouring a plug sealant 4 at the tail of the plug mounting plate 2;

[0008] The printed circuit board welding socket comprises a plurality of rigid jack contacts 9, a socket sealant 12 for fixing the rigid jack contacts 9, a socket mounting plate 10 for positioning the rigid jack contacts 9, a socket housing 11 including a printed circuit board mounting fixing hole and wrapping the socket mounting plate 10, a special-shaped guide sleeve 13 located at both ends of the socket housing 11 and matching the shape of the special-shaped guide pin 5 for realizing the plug-in guide and mis-insertion prevention function, a socket nut 16, a socket flat washer 14 and a socket elastic washer 15 for realizing the locking of the printed circuit board installation;

[0009] The rigid jack contacts 9 are symmetrically distributed in the socket mounting plate 10, and are positioned through the various holes of the socket mounting plate 10. The number of rows, the number of each row, and the spacing are the same as those of the stranded wire flexible pin contacts 1 of the adapted soldered printed circuit board plug, and the position and shape are adapted to the stranded wire flexible pin contacts 1. After the rigid jack contacts 9 are positioned in the various holes of the socket mounting plate 10, the socket sealant 12 is poured at the tail of the socket mounting plate 10 to be fixed to the socket housing 11;

[0010] Before plugging, first pass the PCB soldering plug and the PCB soldering socket tail terminal pins through the corresponding holes of the PCB, and realize the signal transmission between the connector and the PCB by welding. Then pass the corresponding guide sleeve 13 and guide pin 5 through the mounting holes at both ends of the plug housing 3 and the socket housing 11, and through the mounting holes of the PCB, and realize the installation and fixation of the plug, socket and PCB by elastic washers, flat washers and nuts. When plugging, align the special-shaped guide pin 5 of the PCB soldering plug with the special-shaped guide sleeve 13 of the PCB soldering socket, plug the interface axially into place, and lock it through the PCB to realize the plugging and locking of the PCB soldering plug and the PCB soldering socket.

[0011] Preferably, the structure of the special-shaped guide sleeve 13 and the special-shaped guide pin 5 for installation is that the insertion end of the special-shaped guide sleeve 13 is a concave key structure, and the insertion end of the special-shaped guide pin 5 is a convex key structure, which can realize the installation of the printed circuit board and the function of preventing mis-insertion.

[0012] Preferably, the stranded wire flexible pin contact 1 is flexibly plugged in and out of the rigid socket contact 9, and the stranded wire flexible pin contact 1 is compressed and deformed and axially stretched due to the force, so as to be in close contact with the inner wall of the rigid socket contact 9, thereby achieving reliable connection and realizing reliable transmission of high-speed signals.

[0013] Preferably, one end of the mating surface of the plug housing 3 and the socket housing 11 is designed with a large rounded corner, and the other end is designed with a small rounded corner, so as to further prevent mis-insertion.

[0014] Preferably, the stranded wire flexible pin contacts 1 and the rigid socket contacts 9 are composed of two rows, with 10 contacts in each row.

[0015] Preferably, the spacing between the multiple twisted wire flexible pin contacts in the printed circuit board welding plug and the multiple rigid socket contacts 9 in the printed circuit board welding socket is 1.27 mm, and the row spacing is 1.1 mm, which can meet the requirements of electrical performance and have miniaturization and micro-rectangular characteristics.

[0016] Both ends of the plug housing (3) and the socket housing (11) are provided with printed circuit board mounting and fixing holes.

[0017] Compared with the prior art, the utility model has the following advantages and effects:

[0018] 1) The special-shaped guide sleeve and guide column can not only prevent mis-insertion, but also fix and lock the mounting plate.

[0019] 2) The differential contact pairs are designed as multiple "U"-shaped arrangements to meet impedance matching and comply with the high-speed signal requirements of the printed circuit board.

[0020] 3) The differential contacts use flexible contacts with multi-point contact, which are gentle to plug and unplug and have reliable contact, meeting the requirements of reliability and light plug and unplug.

[0021] 4) The plug housing and the socket housing have large and small rounded corners to prevent mis-insertion during insertion, thus realizing the anti-mis-insertion function.

[0022] 5) The number of product contacts can be expanded according to actual needs to realize the serial development of this type of electrical connector. It has a large market demand, good market prospects, and good application and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1a This is the front view of the printed circuit board welding plug of the utility model. Figure 1b This is the left view of the printed circuit board welding plug of the utility model. Figure 1c This is a top view of the printed circuit board welding plug of the utility model. Figure 1d This is a three-dimensional diagram of the plug housing. Figure 1e It is a three-dimensional diagram of special-shaped guide pins.

[0024] Figure 2a This is the front view of the printed circuit board welding socket of the utility model. Figure 2b This is the left view of the printed circuit board welding socket of the utility model. Figure 2c This is a top view of the printed circuit board welding socket of the utility model. Figure 2d This is a three-dimensional diagram of the socket housing. Figure 2e A three-dimensional diagram of the special-shaped guide sleeve for printed circuit board installation and prevention of mis-insertion. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below with reference to the accompanying drawings:

[0026] The utility model discloses a high-speed inter-board connector with a function of preventing mis-insertion, comprising a printed board welding plug and a printed board welding socket adapted to be connected with the printed board welding plug; Figure 1a , Figure 1b and Figure 1c As shown, the printed circuit board welding plug includes a plurality of twisted wire flexible pin contacts 1, a plug sealant 4 for fixing the plurality of twisted wire flexible pin contacts, a plug mounting plate 2 for wrapping and positioning the twisted wire flexible pin contacts 1, a plug housing 3 for wrapping the plug mounting plate 2, and a special-shaped guide pin 5 for preventing mis-insertion and installation.

[0027] like Figure 1a and 1c As shown, the stranded wire flexible contact 1 is positioned through each hole of the plug mounting plate 2, and consists of two rows, with multiple four stranded wire flexible pin contacts 1 in each row forming a U-shaped arrangement, and the diagonal lines form a pair of differential contacts. After the stranded wire flexible pin contact 1 is positioned on the plug mounting plate 2, it is fixed to the plug housing 3 by filling the plug sealant 4 at the tail of the plug mounting plate.

[0028] like Figure 1a , 1b , 1c, Figure 1d As shown, the special-shaped guide pins 5 for installation and mis-insertion prevention are arranged in the installation holes at both ends of the plug housing 3 and are fixed to the plug housing 3 through the plug elastic washers 7, the plug flat washers 6 and the plug nuts 8.

[0029] like Figure 1e As shown, the structure of the special-shaped guide pin 5 is a convex structure.

[0030] During assembly, the first step is to first install the plug mounting plate 2 into the step cavity of the plug housing 3, and then install multiple stranded flexible pin contacts 1 into the various holes of the plug mounting plate 2, and use the positioning tool to position the stranded flexible pin contacts 1. The gap formed between the plug mounting plate 2 and the tail of the plug housing 3 is filled with plug sealant 4 and filled flush with the end face of the plug housing step, and must not be higher than the end face of the plug housing 3, to complete the position fixation of the stranded flexible pin contacts 1. The second step is to first pass the special-shaped guide pin 5 that realizes the function of preventing misinsertion and installation through the plug elastic washer 7, the plug flat washer 6 and the plug nut 8 in turn, and fix it with the plug housing 3, that is, to complete the assembly of the printed circuit board welding plug.

[0031] like Figure 2a , Figure 2b , Figure 2c , Figure 2d , Figure 2eAs shown, the printed circuit board welding socket includes a plurality of rigid jack contacts 9, a plug sealant 12 for fixing the rigid jack contacts 9, a socket mounting plate 10 for positioning the rigid jack contacts 9, a socket housing 11 including printed circuit board mounting fixing holes and wrapping the socket mounting plate 10, special-shaped guide sleeves 13, socket elastic washers 15, socket flat washers 14 and socket nuts 16 arranged at the mounting holes at both ends of the socket housing 11 to realize printed circuit board installation and prevent misinsertion.

[0032] like Figure 2a , Figure 2b , Figure 2e As shown, the special-shaped guide sleeve 13 for preventing mis-insertion and installation passes through the mounting holes at both ends of the socket housing 11 and is fixed to the socket housing 11 through the socket elastic gasket 15, the socket flat gasket 14 and the socket nut 16. The position and number of the special-shaped guide pins 5 of the printed circuit board welding plug are the same, and the shape is adapted to the special-shaped guide pins 5.

[0033] During assembly, the first step is to first install the socket mounting plate 10 into the socket housing 11, and then install multiple rigid jack contacts 9 into the various holes of the socket mounting plate 10, and position them by positioning tooling, and finally fill the gap formed by the socket mounting plate 10 and the tail of the socket housing 11 with socket sealant 12 and fill it flush with the end face of the socket housing to complete the position fixation of the rigid jack contacts 9; the second step is to first pass the special-shaped guide sleeve 13 for preventing misinsertion and installation through the locking installation holes at both ends of the socket housing 11, and fix the special-shaped guide pin 13 for installation to the socket housing 11 through the socket elastic washer 15, the socket flat washer 14 and the socket nut 16. After completing the above two steps, the assembly of the printed circuit board welding socket is completed.

[0034] like Figure 1a , Figure 1c , Figure 1d , Figure 1e , Figure 2a , Figure 2c , Figure 2d and Figure 2e As shown, the plug housing 3 mating interface is designed with large and small rounded corners to prevent mis-insertion. Correspondingly, the socket housing 11 mating interface is designed with large and small rounded corners that match when plugged in. The special-shaped guide pin 5 and the special-shaped guide sleeve 13 are also designed as special-shaped structures of convex keys and concave keys with matching shapes. Through the above design, a dual anti-mis-insertion function is achieved.

[0035] like Figure 1c and Figure 2c As shown, the stranded wire flexible pin contact 1 and the rigid socket contact 9 are symmetrically arranged in a U shape at four corners on both sides of the interface, meeting the requirements of high-speed signal transmission of the printed circuit board.

[0036] like Figure 1a , Figure 1c , Figure 2a , Figure 2c As shown, the stranded wire flexible pin contact 1 is flexibly plugged and unplugged with the rigid socket contact 9, and the circumscribed circle diameter of the bulge part of the stranded wire flexible pin contact 1 is larger than the inner diameter of the rigid socket contact 9. During operation, it produces compression deformation and axial rotational elongation due to the force, and is in close contact with the socket at multiple points, and has good elastic contact performance and vibration and impact resistance. In addition to radial elastic contraction, the stranded wire flexible pin contact 1 is also accompanied by axial rotational elongation, so it has smaller insertion force and separation force, long service life, reliable contact, easy plugging and unplugging, and reliable transmission of high-speed signals can be achieved.

[0037] like Figure 1a , Figure 1d , Figure 2a , Figure 2d As shown, the plug housing 3 and the socket housing 11 are designed with printed circuit board mounting fixing holes. This design structure meets the requirements of installation, fixing and plugging. The special-shaped guide pins 5 and the special-shaped guide sleeves 13 can not only realize the fixed installation of the plug and the socket on the printed circuit board through the installation holes, but also realize the anti-misinsertion function during plugging. The structural design is reasonable and novel.

[0038] The utility model takes 20 cores as an example, and the number of contacts of the electrical connector can be expanded on the basis of the structure to meet the needs of personalized customization, thus providing a structural solution for the series expansion of the product.

[0039] The installation, fixing and plugging process of the printed circuit board welding plug and the printed circuit board welding socket of the utility model is as follows: first, the rigid jack contact piece 9 is positioned through each hole position of the socket mounting plate 10, and the gap between the socket mounting plate 10 and the socket housing 11 is filled with the socket sealant 12. After the sealant is cured, the tail terminal pin of the rigid jack contact piece 9 is passed through the corresponding hole position of the printed circuit board, and the signal connection with the printed circuit board is realized by welding; then, through the mounting holes at both ends of the socket housing 11, the special-shaped guide sleeve 13, the socket elastic washer 15, the socket flat washer 14 and the socket nut 16 are used to realize the installation and fixing with the printed circuit board; then, the stranded wire flexible pin contact piece 1 is passed through the plug mounting plate 2 Each hole is positioned, and the gap between the plug mounting plate 2 and the plug housing 3 is filled with plug sealant 4. After the sealant is cured, the tail terminal pin of the stranded wire flexible pin contact 1 is passed through the corresponding hole of the printed circuit board, and the signal connection with the printed circuit board is realized by welding; then, through the mounting holes at both ends of the plug housing 3, the socket guide pin 5, the plug elastic washer 7, the plug flat washer 6 and the plug nut 8 are used to realize the installation and fixation with the printed circuit board; finally, the special-shaped guide pin 5 of the printed circuit board welding plug is aligned with the special-shaped guide sleeve 13 of the printed circuit board welding socket, the interface is axially plugged into place, and the printed circuit board is locked to realize the plugging and locking of the printed circuit board welding plug and the printed circuit board welding socket.

[0040] The structure of the inter-board high-speed connector with anti-misinsertion function described in the utility model is novel in structure and highly practical, and meets the requirements of miniaturization, easy plugging and unplugging, high reliability, customization, anti-misinsertion, easy assembly, economy, and excellent performance. The products can be expanded in series based on the spectrum requirements and speed requirements, and have great application and promotion value, and have considerable market prospects.

Claims

1. A high-speed inter-board connector with an anti-misinsertion function, characterized in that: It includes a printed circuit board welding plug and a printed circuit board welding socket adapted to be connected with the welding printed circuit board plug; The printed circuit board welding plug comprises a plurality of twisted wire flexible pin contacts (1) and a plug sealant (4) for fixing the twisted wire flexible pin contacts (1), a plug mounting plate (2) for positioning the twisted wire flexible pin contacts (1), a plug housing (3) comprising a printed circuit board mounting hole and wrapping the plug mounting plate (2), special-shaped guide pins (5) located at both ends of the plug housing (3) for realizing plug-in guidance and preventing mis-insertion and printed circuit board installation, and a plug nut (8), a plug flat washer (6) and a plug elastic washer (7) required for printed circuit board installation; The twisted wire flexible pin contact pieces (1) are symmetrically distributed in the plug mounting plate (2), and are positioned through the various holes of the plug mounting plate (2). The four twisted wire flexible pin contact pieces (1) form a U-shaped arrangement, and the diagonal lines form a pair of differential contacts. After the twisted wire flexible pin contact pieces (1) are positioned on the plug mounting plate (2), they are fixed to the plug housing (3) by pouring plug sealant (4) at the tail of the plug mounting plate (2); The printed circuit board welding socket comprises a plurality of rigid jack contacts (9), a socket sealant (12) for fixing the rigid jack contacts (9), a socket mounting plate (10) for positioning the rigid jack contacts (9), a socket housing (11) comprising printed circuit board mounting fixing holes and wrapping the socket mounting plate (10), special-shaped guide sleeves (13) located at both ends of the socket housing (11) and matching the shape of the special-shaped guide pins (5) for realizing the function of plug-in guidance and mis-plugging prevention, a socket nut (16) for realizing the locking of the printed circuit board installation, a socket flat washer (14) and a socket elastic washer (15); The rigid jack contacts (9) are symmetrically distributed in the socket mounting plate (10), and are positioned through the various holes of the socket mounting plate (10). The number of rows, the number of each row, and the spacing are the same as those of the stranded wire flexible pin contacts (1) of the matching soldered printed circuit board plug, and the positions and shapes of the stranded wire flexible pin contacts (1) are matched. After the rigid jack contacts (9) are positioned in the various holes of the socket mounting plate (10), socket sealant (12) is poured at the rear of the socket mounting plate (10) and fixed to the socket housing (11).

2. The inter-board high-speed connector with anti-misinsertion function according to claim 1, characterized in that: The plug-in ends of the special-shaped guide sleeve (13) and the special-shaped guide pin (5) are mutually concave-convex key structures.

3. The inter-board high-speed connector with anti-misinsertion function according to claim 1, characterized in that: The stranded wire flexible plug pin contact (1) is flexibly plugged in and out of the rigid socket contact (9), and the stranded wire flexible plug pin contact (1) is compressed and deformed and axially elongated due to the force, so as to be in close contact with the inner wall of the rigid socket contact (9).

4. The inter-board high-speed connector with anti-misinsertion function according to claim 1, characterized in that: One end of the mating surface of the plug housing (3) and the socket housing (11) is designed with a large rounded corner, and the other end is designed with a small rounded corner.

5. The inter-board high-speed connector with anti-misinsertion function according to claim 1, characterized in that: The stranded wire flexible pin contact (1) and the rigid socket contact (9) are both composed of two rows, with 10 contacts in each row.

6. The inter-board high-speed connector with anti-misinsertion function according to claim 1, characterized in that: The spacing between the multiple twisted wire flexible pin contacts in the printed circuit board welding plug and the multiple rigid socket contacts (9) in the printed circuit board welding socket is 1.27 mm, and the row spacing is 1.1 mm.

7. The inter-board high-speed connector with anti-misinsertion function according to claim 1, characterized in that: Both ends of the plug housing (3) and the socket housing (11) are provided with printed circuit board mounting and fixing holes.

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