Socket connector

Abstract

A socket connector comprises a shell and an insulator arranged in the shell, the insulator is provided with a plurality of mounting holes used for assembling jack contacts, the plurality of mounting holes are arranged on the insulator according to a rectangular array structure, and each mounting hole is of a stepped hole-shaped structure with a wide lower part and a narrow upper part. The socket connector is characterized in that the socket connector is provided with a plurality of jack contact pieces, each jack contact piece is fixed in the corresponding mounting hole in a penetrating mode through strong fitting with two sections of different inner diameters of the corresponding mounting hole, and the jack contact pieces are arranged in a 90-degree staggered mode. The specific arrangement structure, the fixing mode and the arrangement mode of the jack contact pieces on the socket connector are improved; the invention provides a socket connector which can meet the miniaturization requirement of the whole structure, has higher through-current capability and higher connection reliability, is convenient to assemble and process, small in impedance, high in integration level, small in size and good in stability, so that the cost is reduced, and the use performance is improved.

Description

Technical Field

[0001] The invention relates to the technical field of connectors, in particular to a rectangular socket connector. Background Art

[0002] In the prior art, connectors are mainly used in aerospace, weapons and equipment, electronic radar and other fields. Signals are transmitted by plugging and connecting plugs and sockets, and mixed transmission of high-speed signals, optical signals, power signals and radio frequency signals can be achieved.

[0003] At present, the socket connector in the prior art generally adopts Φ0.4mm contact pieces to transmit high-speed signals. The main problems of this socket connector are: 1. Traditional contacts have two-point contact, few contact points, simple form, low positive pressure and weak flow capacity.

[0004] For example, the contact piece disclosed in the invention patent with application publication number CN109841983A has a split slot socket in the socket contact piece, which is in contact with the pin to form a passage.

[0005] In this structure, since the socket contact and the pin contact only achieve double-point contact at the contact layer, the flow capacity is low. With the increasing requirements for product flow capacity in the use environment of modern society and the limitations on connector miniaturization, connectors are required to have higher flow capacity while meeting miniaturization requirements.

[0006] 2. The contacts of some connectors adopt a crown spring two-body structure.

[0007] For example, the contact piece disclosed in the invention patent with application publication number CN102801018A comprises a rolled crown spring and a machined solid socket as two parts. The crown spring contact ring is installed in the tubular socket, and then the socket is closed to ensure that the crown spring will not fall out.

[0008] This contact connection structure is not strongly fixed in the socket, so the crown spring swings left and right in the socket, which can easily lead to poor contact. In addition, when the pin contacts the crown spring, the crown spring will be stretched axially under force. If there is not enough space in the socket, the crown spring will be stuck axially and lose its function. Finally, the conductive resistance between the crown spring and the socket is too large, which makes the temperature rise of the socket contact part high when current is passed through, which can easily lead to oxidation of the contact area, thus affecting its conductive performance. In addition, the two-body structure requires additional assembly processes, which reduces the reliability and production efficiency of the parts, and increases the cost.

[0009] 3. The socket contact has many parts and the assembly cost is high.

[0010] Contacts are often composed of multiple parts, and the manufacturing process of parts is complex, the assembly time is long, and the cost is high. The preparation process of this socket contact is relatively complex. At the same time, when assembling the connector, it needs to be assembled one by one, the work time is long, and the cost of the parts is high.

[0011] 4. The connector is large in size, and the cantilever is long after the contact is assembled, resulting in poor stability.

[0012] In the specific structure of the socket connector, since multiple socket contacts need to be arranged and assembled on the insulator, and the multiple socket contacts need to maintain a certain creepage distance between each other, the overall volume of the socket connector is usually large; at the same time, in the prior art, the assembly and fixation of the socket contact on the insulator usually only fixes the head of the socket contact in a preset mounting hole on the insulator, and the structure of the middle and tail parts of the socket contact are suspended on the outside of the insulator. This results in that after the socket connector is plugged into the external plug, the stability of the entire socket contact will be poor due to the long cantilever of the socket contact and force problems, which will affect its service life and use effect.

[0013] Therefore, how to improve the structure of the existing socket connector to make it develop in the direction of integration, high speed, small size and high stability is of great significance for reducing costs and improving quality. Summary of the invention

[0014] The technical purpose of the present invention is to provide a socket connector that can meet the miniaturization requirements of the overall structure, has high current-carrying capacity and strong connection reliability, is easy to assemble and process, has low impedance, high integration, small size and good stability, so as to reduce costs and improve performance through improving the specific setting structure, fixing method and arrangement method of the socket contacts on the socket connector.

[0015] The technical solution adopted by the present invention to solve the above technical problems is: a socket connector, comprising a housing and an insulator arranged in the housing, the insulator is provided with a plurality of mounting holes for assembling jack contacts, the plurality of mounting holes are arranged in a rectangular array structure on the insulator, and each mounting hole is a stepped hole structure with a width at the bottom and a narrowness at the top, and each jack contact is fixed in the mounting hole by being fitted with two sections of different inner diameters of the mounting hole; The multiple jack contacts are divided into differential pair contacts and grounding contacts. The assembly directions of the differential pair contacts and the grounding contacts in the mounting holes are respectively parallel and perpendicular to the width direction of the rectangular array. In the width direction of the rectangular array, in each column of multiple grounding contacts evenly distributed, there are two differential pair contacts arranged between every two adjacent grounding contacts. In the length direction of the rectangular array, the grounding contacts in every two adjacent columns are arranged alternately up and down.

[0016] Furthermore, the socket contact comprises an insertion portion, an assembly portion and a connection portion which are sequentially arranged in abutment with each other in front and back, the insertion portion is composed of a front guide end, a rear converging end and a plurality of waisted springs connected therebetween, the plurality of waisted springs are evenly arranged along the circumference of the annular front guide end, and the waists thereof can be propped up toward the circumferential outer side due to force contact when the matching pin contact is inserted; The radial width of the assembly portion is greater than the width of the insertion portion and the connection portion, and is used for interference fit with the mounting hole on the insulator to achieve fixation of the socket contact in the mounting hole; The connecting part is a pin-shaped structure, and a deformation through hole is provided at the center of the connecting part for extrusion and deformation when the connecting part is plugged and connected with the printed circuit board. The material thickness of the connecting part and the assembly part is greater than that of the plug-in part.

[0017] Furthermore, the inserting portion, the assembling portion and the connecting portion are an integrally formed structure.

[0018] Furthermore, after the adapting pin contact is inserted through the front guide end of the insertion portion, it comes into conductive contact with the waist of the plurality of waisted spring leaves.

[0019] Furthermore, there are four waisted reeds, and the four waisted reeds are adjacent to and in contact with each other inside the annular front guiding end.

[0020] Furthermore, the front guide end and the rear merging end are both annular structures, and the two ends of the multiple waisted spring leaves along the axial direction are radially clamped inside the annular front guide end and the rear merging end.

[0021] Furthermore, the assembly part is in a plate-like structure, and a plurality of impedance-reducing through holes are provided on the plate-like assembly part.

[0022] Furthermore, the assembly part is composed of a transition plate and an assembly plate, the transition plate is connected between the assembly plate and the rear converging end of the plug-in part, a plurality of through holes for reducing impedance are opened on the assembly plate, the radial width of the assembly plate is greater than the width of the plug-in part and the connecting part, and the central axis of the assembly plate is consistent with the central axis of the plug-in part.

[0023] Furthermore, the connecting portion and the assembly plate are located in the same plane.

[0024] Furthermore, a hard sheath is sleeved on the outer side of the insertion part and the transition plate, and the hard sheath and the assembly plate are respectively interference-fitted with the upper narrow part and the lower wide part of the stepped installation hole for strong fixing.

[0025] Furthermore, a plurality of weight-reducing grooves are provided at both radial ends of the assembly plate.

[0026] Furthermore, the connecting portion is in the form of a long strip extending along the axial direction of the socket contact, and the connecting portion is radially expanded at a location where the deformable through hole is provided.

[0027] Furthermore, a guiding assembly for guiding the adapting plug to be plugged and connected with the socket connector is also provided on the housing.

[0028] Furthermore, the guide assembly includes identification guide pins, fixing rings and crown bands symmetrically arranged at both ends of the shell. The guide assembly can cooperate with the corresponding guide units arranged on the adapter plug to achieve effective plugging of the adapter plug and the socket connector.

[0029] Furthermore, a plurality of process holes and process grooves for reducing the warpage during the preparation of the insulator are respectively opened on the surface and the outer side wall of the insulator.

[0030] Furthermore, a plurality of process grooves are evenly arranged along the circumferential direction of the outer side wall of the insulator, and a plurality of process holes are evenly opened between a plurality of socket contacts in a rectangular array and are staggered up and down.

[0031] Beneficial effects: 1. A socket connector of the present invention has many advantages such as small size, light weight, high transmission rate, good stability, high integration, and multiple types of signals that can be transmitted. The connector as a whole can integrate the specific types of signals that users need to transmit according to their specific needs, and has a wide range of applications. The arrangement of multiple pin contacts on the insulator in the socket connector is a 90-degree staggered arrangement under the overall rectangular assembly structure, that is, the differential pair contacts and the grounding contacts are vertically staggered at 90 degrees. This arrangement can not only ensure the necessary creepage distance between the contacts, so that the transmission signal rate is high, but also ensure the stability of signal transmission, and at the same time meet the requirement of small size of the connector.

[0032] 2. The socket connector of the present invention has a simple structure and reasonable design. The two main functional parts of the socket contact are the installation part and the plug-in area. The installation part cooperates with the installation hole on the insulator, and the plug-in area cooperates with the pin on the external plug. The elasticity of the spring sheet is used to achieve close contact with the pin, thereby achieving stable signal transmission and effectively ensuring the reliability of the connector. A hard sheath for structural protection is also provided outside the plug-in area.

[0033] 3. In a socket connector of the present invention, the mounting hole on the insulator is used to support and fix the jack contact. The mounting hole is structurally set as a stepped hole structure that is narrow at the top and wide at the bottom. The round hole with a smaller diameter at the top cooperates with the hard sheath sleeved on the outside of the jack contact to achieve the effect of straightening the jack contact, avoiding plug-in damage, shaking offset and poor stability caused by the excessive cantilever; the square hole with a larger diameter at the bottom is fixedly matched with the mounting part of the jack contact, and the jack contact is fixed to the mounting hole in a forced installation manner, that is, the two fixing points of the stepped mounting hole are both forced fixing structures, and the jack contact is inserted into the insulator to achieve a stable fixing effect. This installation method can not only effectively enhance the firmness of the jack contact fixation, making the jack contact less likely to shake after assembly and having better stability, but also the two-point fixed support method can effectively improve the straightness and coaxiality of the jack contact after assembly.

[0034] 4. A socket connector of the present invention is provided with a plurality of process holes and process grooves on the insulator. This is because the insulator is relatively large in length and diameter, and is prone to warping and poor fluidity during preparation and molding. By adding process holes on the surface of the insulator and process grooves on the side, the wall thickness of the insulator can be made uniform, which can effectively reduce the warpage of the parts, increase the flow rate of the material in the mold, and thus improve the molding rate.

[0035] 5. The socket contact of the present invention has a simple structure and reasonable arrangement. By arranging a plurality of waisted springs in the insertion part, the current passing through the adapter pin contact can be converted into a plurality of parallel current paths, which flow to the plurality of waisted springs respectively and merge at the rear merging end connected to the plurality of waisted springs. Therefore, the flow capacity of the entire socket contact is greatly increased, and the disadvantages caused by the assembly of two parts are avoided at the same time. The device requirements for miniaturization of the contact can be better met, and the practical effect is better.

[0036] 6. The socket contact of the present invention makes the insertion part, the assembly part and the connection part into an integrated structure, which can solve the assembly disadvantages, improve the processing efficiency, reduce the cost, increase the flow capacity, reduce the conductive resistance, and improve the reliability of the parts.

[0037] 7. The socket contact of the present invention increases the contact point area between the pin and the socket contact by arranging a waisted spring with a specific structure inside the plug-in portion to increase the number of spring pieces, thereby greatly improving the current carrying capacity of the contact.

[0038] 8. The jack contact of the present invention has a material used to prepare the jack contact configured as a profile structure that is thin at the front and thick at the back. The thin material at the front end plug-in portion can ensure a gentle plugging and unplugging force, improve mechanical durability and user feel, and the thick material at the rear end assembly portion and connection portion can improve the strength of the part and increase its fixity, reliability and connectivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 A partial enlarged view of Figure 3 is a schematic diagram of the structure of a jack contact; Figure 4 for Figure 3 AA section view after removing the hard sheath; Figure 5 It is an axial cross-sectional view of the socket contact after removing the hard sheath; Figure 6 A schematic diagram of a fixing method of a jack contact; Figure 7 Schematic diagram of the structure of an insulator.

[0040] Description of the drawings: 1. Insertion part, 101. Front guide end, 102. Waisted spring, 103. Rear converging end, 2. Assembly part, 201. Through hole for reducing impedance, 202. Transition plate, 203. Assembly plate, 3. Connection part, 301. Deformation through hole, 4. Insulator, 5. Shell, 6. Crown band, 7. Mounting hole, 8. Hard sheath, 9. Identification guide pin, 10. Fixing ring, 11. Process hole, 12. Process groove, 13. Protection key. DETAILED DESCRIPTION

[0041] The technical solution of the present invention is further elaborated and illustrated in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0043] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0044] The invention provides a rectangular socket connector capable of transmitting 40Gbps high-speed signals, which relates to a jack contact and belongs to the technical field of high-speed rectangular connectors.

[0045] As attached Figure 1 As shown, the socket connector of the present invention has many advantages as a whole, such as small size, light weight, high transmission rate, and multiple types of transmitted signals. The specific types of signals that the user needs to transmit can be integrated according to the specific needs of the user. Figure 1 Only the transmission module of high-speed signals is shown.

[0046] The specific structure of the socket connector mainly includes a signal transmission module, a fixed support structure and a guide structure. The signal transmission module mainly includes an insulator 4 and a jack contact, and the signal transmission is realized by plugging the external plug into the socket connector. The fixed support structure includes a housing 5, which protects, fixes and supports the signal transmission module; the bottom of the jack contact is a fisheye structure that can be crimped on the printed circuit board to realize vertical signal transmission between boards, and the jack contact is fixedly installed on the insulator 4; the guide structure mainly includes a fixed ring 10, an identification guide pin 9 and a crown band 6. The identification guide pin 9 and the identification guide pin at the external plug end guide each other, and the crown band 6 and the guide pin at the plug end guide each other. Through these guide structures, it can be effectively ensured that the external plug and the socket contact are effectively plugged into place.

[0047] The jack contact used in the present invention is a new jack contact with a simple structure. Unlike the existing jack contact, the assembly part of the jack contact and the insulator is a rectangular structure. For this reason, the present invention proposes a new jack contact arrangement method. The differential pair contacts are arranged along the width direction (the width direction of the insulator 4), and the grounding contact of the ground signal is arranged at 90 degrees to the differential pair contacts (the length direction of the insulator 4). Figure 2As shown in the figure, the three pairs of differential contact members in the first column are arranged vertically, and a ground contact member for grounding signal is arranged between each pair of differential contact members, that is, the jack contacts are arranged horizontally and vertically. This can ensure a high transmission signal rate, the stability of signal transmission, and meet the requirements of small size of the connector.

[0048] The reason for the 90-degree vertical staggered arrangement is: if the socket contacts are arranged in a 45-degree tilted manner, on the one hand, the insulator will have a thin-walled structure, resulting in reduced strength of the product and affecting the service life of the product. In addition, it will also affect the performance of the product, reducing the creepage distance between the socket contacts, thereby affecting the voltage resistance performance of the product.

[0049] An anti-over-insertion protection key 13 is arranged on the lower surface of the insulator to prevent the mounting hole from being damaged when the socket contact is over-inserted. The protection key 13 is a raised square structure.

[0050] like Figure 3 As shown in the figure, the socket contact member used in the present invention has a simple structure, which is mainly divided into two parts in terms of function: the installation part and the plug-in area. The installation part of the socket contact member cooperates with the insulator, Figure 3 The left side of the middle installation part is a fisheye structure, which is mainly used for crimping printed circuit boards; the mating area cooperates with the pin, and the elasticity of the spring sheet is used to achieve close contact with the pin, thereby achieving stable signal transmission and effectively ensuring the reliability of the connector. In addition, a stainless steel tube (hard sheath) is used outside the mating area to protect the mating area. The structure of the jack contact is simple, and the main part of the jack contact is formed in one piece (mold processing), and the subsequent processing steps are mainly coiling and electroplating.

[0051] The insulator 4 in the socket connector is mainly used to fix and support the jack contact. The mounting hole 7 on the insulator is structurally set as a stepped hole structure with a narrow top and a wide bottom. The round hole with a smaller diameter on the upper part cooperates with the hard sheath on the outer side of the jack contact to achieve the effect of straightening the jack contact, avoiding the plug-in damage, shaking and deterioration of stability caused by the overlong cantilever; the square hole with a larger diameter on the lower part is fixedly matched with the mounting part of the jack contact. If only the square hole on the lower part is used to fix and match with the jack contact, the insertion area of ​​the jack contact and the insulator are clearance-matched, and the jack contact is only fixed by the mounting part below. The cantilever length is long, the jack contact shakes and deviates a lot, and the jack contact is easy to be damaged when plugged in. For this reason, the mounting hole on the insulator adopts the form of a stepped hole, and the round hole on the upper part with a smaller diameter cooperates with the hard sheath of the jack contact to achieve the effect of straightening the cantilever of the jack contact. The two-point support method can effectively improve the straightness and coaxiality of the jack contact after assembly.

[0052] like Figure 6 As shown, the jack contact is fixed on the insulator by forced installation, and the fixing effect is achieved by the jack contact piercing the insulator. The hard sheath and the upper part of the mounting hole are also forced to fit together. The insulator fixes the jack contact through these two forced installations. This installation method can effectively enhance the firmness of the jack contact, so that the jack contact is not easy to shake after assembly and has better stability.

[0053] like Figure 7 As shown, the material of the insulator used in the present invention is LCP, and the processing method is mold molding. The length-diameter ratio of the insulator is relatively large, and the parts are prone to warping and poor fluidity during molding. In order to solve this problem, process holes 11 are added to the surface of the insulator and process grooves 13 are added to the side. The addition of such process holes or process grooves on the insulator makes the wall thickness of the insulator uniform, which can effectively reduce the warping of the parts and increase the flow rate of the material in the mold.

[0054] The main innovations of the socket connector of the present invention are: Innovation point 1: The arrangement of the socket contacts adopts a 90-degree staggered arrangement.

[0055] Innovation 2: The insulator mounting hole adopts a stepped hole, and the socket contact is fixed by a two-point fixed strong installation method.

[0056] Innovation 3: The specific setting of the jack contact makes it stable.

[0057] Example 1 As shown in the accompanying drawings, a socket connector of the present invention comprises a shell 5 and an insulator 4 arranged in the shell 5, a plurality of mounting holes 7 for assembling jack contacts are opened on the insulator 4, the plurality of mounting holes 7 are arranged in a rectangular array structure on the insulator 4, and each mounting hole 7 is a stepped hole structure which is wider at the bottom and narrower at the top, and each jack contact is fixed in the mounting hole 7 by being forced to fit with two sections of different inner diameters of the mounting hole 7; the plurality of jack contacts are divided into differential pair contacts and grounding contacts, and the assembly directions of the differential pair contacts and the grounding contacts in the mounting hole 7 are respectively parallel and perpendicular to the width direction of the rectangular array, and in the width direction of the rectangular array, in each column of the plurality of evenly distributed grounding contacts, two differential pair contacts are arranged between every two adjacent grounding contacts, and in the length direction along the rectangular array, the grounding contacts of every two adjacent columns are arranged alternately up and down.

[0058] The socket contact comprises an inserting part 1, an assembly part 2 and a connecting part 3 which are arranged in sequence front and back. The inserting part 1, the assembly part 2 and the connecting part 3 are an integrally formed structure. The inserting part 1 is composed of a front guide end 101, a rear converging end 103 and four waisted springs 102 connected therebetween. The four waisted springs 102 are evenly arranged along the circumference of the annular front guide end 101. The four waisted springs 102 are adjacent to each other inside the annular front guide end 101, and their waists can be propped up to the circumferential outside due to force contact when the adapter pin contact is inserted. After the adapter pin contact is inserted through the front guide end 101 of the inserting part 1, it is in conductive contact with the waists of the multiple waisted springs 102. The front guide end 101 and the rear converging end 103 are both annular structures, and the two ends of the multiple waisted springs 102 along the axial direction are radially clamped and limited inside the annular front guide end 101 and the rear converging end 103. The radial width of the assembly portion 2 is greater than the width of the plug-in portion 1 and the connecting portion 3, and is used for interference fit with the mounting hole 7 on the insulator 4 to achieve fixation of the socket contact in the mounting hole 7. The assembly portion 2 is a plate-like structure, and a plurality of through holes 201 for reducing impedance are provided on the plate-like assembly portion 2. The assembly portion 2 is composed of a transition plate 202 and an assembly plate 203. The transition plate 202 is connected between the assembly plate 203 and the rear converging end 103 of the plug-in portion 1. A plurality of through holes 201 for reducing impedance are provided on the assembly plate 203, and a plurality of weight-reducing grooves are provided at both radial ends of the assembly plate 203. The radial width of the assembly plate 203 is greater than the width of the plug-in portion 1 and the connecting portion 3, and the central axis of the assembly plate 203 is consistent with the central axis of the plug-in portion 1. The connecting part 3 is a pin-shaped structure, and a deformation through hole 301 is provided at the center of the connecting part 3 for the connecting part 3 to be squeezed and deformed when plugged and connected with the printed circuit board. The material thickness of the connecting part 3 and the assembly part 2 is greater than the material thickness of the plug-in part 1, and the connecting part 3 and the assembly plate 203 are located in the same plane. A hard sheath 8 is provided on the outer side of the plug-in part 1 and the transition plate 202, and the hard sheath 8 and the assembly plate 203 are respectively fitted with the upper narrow part and the lower wide part of the stepped mounting hole 7 by interference fit for strong installation and fixation. The connecting part 3 is a long strip structure extending along the axial direction of the socket contact, and the connecting part 3 is radially expanded at the part where the deformation through hole 301 is provided.

[0059] Furthermore, a guide assembly for guiding the adapter plug to be plugged and connected with the socket connector is also provided on the housing 5. The guide assembly includes identification guide pins 9, a fixing ring 10 and a crown band 6 symmetrically arranged at both ends of the housing 5. The guide assembly can cooperate with the corresponding guide unit arranged on the adapter plug to achieve effective plugging of the adapter plug and the socket connector.

[0060] Furthermore, a plurality of process holes 11 and process grooves 12 are respectively provided on the surface and the outer side wall of the insulator 4 to reduce the warpage during the preparation of the insulator 4. The plurality of process grooves 12 are evenly arranged along the circumference of the outer side wall of the insulator 4, and the plurality of process holes 11 are evenly arranged between the plurality of socket contacts in a rectangular array and are staggered up and down.

[0061] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the entire content of the present invention. When the actual product is used, corresponding adjustments are made according to the connector, charging socket structure and vehicle body layout. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to make formal modifications to the technical solutions described in the aforementioned embodiments, or to make equivalent replacements for some of the technical features therein. Any formal modifications, equivalent replacements, etc. made within the scope of the ideas and inspirations of the present invention should be included in the scope of protection of the present invention.

Claims

1. A socket connector, comprising a housing (5) and an insulator (4) disposed in the housing (5), the insulator (4) being provided with a plurality of mounting holes (7) for assembling socket contacts, characterized in that: A plurality of mounting holes (7) are arranged on the insulator (4) in a rectangular array structure, and each mounting hole (7) is in a stepped hole structure that is wider at the bottom and narrower at the top, and each socket contact piece is fixed in the mounting hole (7) by being fitted with two sections of different inner diameters of the mounting hole (7); The plurality of jack contacts are divided into differential pair contacts and grounding contacts. The assembly directions of the differential pair contacts and the grounding contacts in the mounting holes (7) are respectively parallel and perpendicular to the width direction of the rectangular array. In the width direction of the rectangular array, in each column of uniformly distributed multiple grounding contacts, two differential pair contacts are arranged between every two adjacent grounding contacts. In the length direction of the rectangular array, the grounding contacts in every two adjacent columns are arranged in an alternating manner.

2. A socket connector according to claim 1, characterized in that: The socket contact comprises an insertion portion (1), an assembly portion (2) and a connection portion (3) which are arranged in abutment with each other in sequence front and back, the insertion portion (1) being composed of a front guide end (101), a rear junction end (103) and a plurality of waisted spring leaves (102) connected therebetween, the plurality of waisted spring leaves (102) being evenly arranged along the circumference of the annular front guide end (101), and the waists of the plurality of waisted spring leaves (102) being able to be propped up outward in the circumferential direction due to force contact when the matching pin contact is inserted; The radial width of the assembly portion (2) is greater than the widths of the insertion portion (1) and the connection portion (3), and is used for interference fit with the mounting hole (7) on the insulator (4) to achieve fixation of the socket contact piece in the mounting hole (7); The connecting portion (3) is in the form of a pin-shaped structure, and a deformation through hole (301) is provided at the center of the connecting portion (3) for the connecting portion (3) to be squeezed and deformed when plugged into the printed circuit board, and the material thickness of the connecting portion (3) and the assembly portion (2) is greater than the material thickness of the plug-in portion (1).

3. A socket connector according to claim 2, characterized in that: The inserting portion (1), the assembly portion (2) and the connecting portion (3) are an integrally formed structure.

4. The socket connector according to claim 2, characterized in that: After the adapting pin contact piece is inserted through the front guide end (101) of the insertion portion (1), it comes into conductive contact with the waist of the plurality of waisted spring leaves (102).

5. The socket connector according to claim 2, characterized in that: The number of the waisted reed leaves (102) is four, and the four waisted reed leaves (102) are adjacent to each other and in contact with each other inside the annular front guide end (101).

6. The socket connector according to claim 2, characterized in that: The front guide end (101) and the rear merging end (103) are both annular structures, and the two ends of the multiple waisted spring leaves (102) along the axial direction are radially clamped inside the annular front guide end (101) and the rear merging end (103).

7. The socket connector according to claim 2, characterized in that: The assembly portion (2) is in a plate-like structure, and a plurality of impedance-reducing through holes (201) are provided on the plate-like assembly portion (2).

8. A socket connector according to claim 2 or 7, characterized in that: The assembly portion (2) is composed of a transition plate (202) and an assembly plate (203); the transition plate (202) is connected between the assembly plate (203) and the rear converging end (103) of the plug-in portion (1); a plurality of impedance-reducing through holes (201) are provided on the assembly plate (203); the radial width of the assembly plate (203) is greater than the width of the plug-in portion (1) and the connecting portion (3); and the central axis of the assembly plate (203) is consistent with the central axis of the plug-in portion (1).

9. The socket connector according to claim 8, characterized in that: The connecting portion (3) and the assembly plate (203) are located in the same plane.

10. The socket connector according to claim 8, characterized in that: A hard protective sleeve (8) is sleeved on the outer sides of the insertion portion (1) and the transition plate (202), and the hard protective sleeve (8) and the assembly plate (203) are respectively interference-fitted with the upper narrow portion and the lower wide portion of the stepped installation hole (7) for strong mounting and fixing.

11. The socket connector according to claim 8, characterized in that: A plurality of weight-reducing grooves are provided at both radial ends of the assembly plate (203).

12. The socket connector according to claim 2, characterized in that: The connecting portion (3) is in the form of a long strip extending axially along the jack contact piece, and the connecting portion (3) is radially expanded at a location where the deformable through hole (301) is provided.

13. The socket connector according to claim 1, characterized in that: A guiding component for guiding the adapting plug to be plugged into the socket connector is also provided on the housing (5).

14. The socket connector according to claim 13, characterized in that: The guide assembly comprises identification guide pins (9), fixing rings (10) and crown bands (6) which are symmetrically arranged at both ends of the housing (5). The guide assembly can cooperate with corresponding guide units arranged on the adapter plug to achieve effective plugging of the adapter plug and the socket connector.

15. The socket connector according to claim 1, characterized in that: A plurality of process holes (11) and process grooves (12) for reducing the warpage of the insulator (4) during preparation are respectively provided on the surface and the outer side wall of the insulator (4).

16. The socket connector according to claim 15, characterized in that: A plurality of process grooves (12) are evenly arranged along the circumference of the outer side wall of the insulator (4), and a plurality of process holes (11) are evenly opened between a plurality of socket contacts in a rectangular array and are arranged in an upper and lower staggered manner.

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