A socket connector

Abstract

The application discloses a socket connector which comprises a shell and an insulator arranged in the shell, a plurality of mounting holes for assembling jack contact pieces are arranged on the insulator in a rectangular array structure, each mounting hole is in a stepped hole structure with a wide lower part and a narrow upper part, each jack contact piece is fixed in the mounting hole by being tightly fitted at two sections with different inner diameters of the mounting hole, and the arrangement mode of the jack contact pieces adopts 90-degree staggered arrangement. The socket connector is improved in the specific structure, fixing mode and arrangement mode of the jack contact pieces on the socket connector, can meet the miniaturization requirement of the whole structure, has higher flow capacity and stronger connection reliability, is convenient to assemble and process, has small impedance, high integration, small volume and good stability, and can reduce cost and improve use performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of connectors, in particular to a rectangular socket connector. BACKGROUND

[0002] In the prior art, connectors are mainly applied in the fields of aerospace, weapon equipment, electronic radar, etc., and signals are transmitted through the insertion of plugs and sockets, so as to realize the mixed transmission of high-speed signals, optical signals, power signals and radio frequency signals.

[0003] At present, the socket connector in the prior art generally uses a contact piece with a diameter of Φ0.4 mm to transmit high-speed signals, and the main problem of this socket connector is that:

[0004] 1. The traditional contact piece has two-point contact, and the contact points are few and the form is simple, the normal pressure is low, and the current-carrying capacity is weak.

[0005] In the contact piece disclosed in the invention with the application publication number CN109841983A, a split slot jack is arranged in the jack contact piece, which is in contact with the pin contact to form a passage.

[0006] In this structure, only double-point contact is realized between the jack contact piece and the pin contact piece at the contact layer, so the current-carrying capacity is low. With the improvement of the product current-carrying capacity requirement of the modern society and the limitation of the miniaturization of the connector, it is required that the connector has higher current-carrying capacity while meeting the miniaturization requirement.

[0007] 2. The contact piece of some connectors adopts a crown spring type two-body structure.

[0008] In the contact piece disclosed in the invention with the application publication number CN102801018A, the crown spring and the machined solid jack are two parts, the crown spring type contact ring is arranged in the tubular jack, and the jack is then closed to ensure that the crown spring cannot come out.

[0009] In this contact connection type structure, the crown spring is not strongly fixed in the jack, and the left and right shaking of the crown spring in the jack can easily lead to poor contact. In addition, when the pin contacts the crown spring, the crown spring will be axially elongated under stress, and if there is not enough space reserved in the jack, the crown spring will be axially stuck, thereby losing its function. Finally, the contact resistance between the crown spring and the jack is too large, so that the temperature rise of the jack contact piece when passing current is high, which can easily lead to oxidation in the contact area, thereby affecting the conductivity. In addition, the two-body structure needs to increase the assembly process, which reduces the reliability and production efficiency of the parts, and increases the cost.

[0010] 3. The socket contact piece has many parts, and the assembly cost is high.

[0011] The contact is usually assembled by multiple parts, the manufacturing process of the parts is complex, the assembly time is high, and the cost is high. The socket contact is complex in preparation, and the connector needs to be assembled one by one in sequence, which is time-consuming and high in cost.

[0012] 4. The connector is large in size, and the contact is long in cantilever after assembly, and poor in stability.

[0013] In the specific structure of the socket connector, multiple jack contacts need to be arranged and assembled on the insulator, and multiple jack contacts need to maintain a certain creepage distance between each other, which results in that the overall size of the socket connector is usually large. Meanwhile, in the prior art, the assembly and fixation of the jack contact on the insulator is usually that only the head of the jack contact is fixed in the preset mounting hole of the insulator, and the middle and tail of the jack contact are suspended outside the insulator, which results in that after the socket connector is combined with the external plug, the stability of the entire socket contact is poor due to the long cantilever of the jack contact and the stress problem, which affects the service life and use effect.

[0014] Therefore, how to improve the structure of the existing socket connector to make it develop towards integration, high speed, small size and high stability is of great significance for reducing cost and improving quality. SUMMARY

[0015] The technical purpose of the present application is to provide a socket connector which can meet the miniaturization requirement of the overall structure, has high flow capacity and strong connection reliability, is convenient to assemble and process, small in impedance, high in integration, small in size and good in stability, so as to reduce cost and improve use performance.

[0016] The technical solution adopted by the present application to solve the above technical problems is as follows: a socket connector, comprising a shell and an insulator arranged in the shell, a plurality of mounting holes for assembling jack contacts are arranged on the insulator, the plurality of mounting holes are arranged in a rectangular array structure on the insulator, and each mounting hole is in a stepped hole structure with a wide lower part and a narrow upper part, and each jack contact is fixed in the mounting hole by being arranged in the strong fitting of the two sections with different diameters of the mounting hole.

[0017] The plurality of jack contact pieces are divided into differential pair contact pieces and ground contact pieces, the assembly directions of the differential pair contact pieces and the ground contact pieces in the mounting hole are parallel and perpendicular to the width direction of the rectangular array respectively, and in the width direction of the rectangular array, two differential pair contact pieces are arranged between every two adjacent ground contact pieces in each column, and the ground contact pieces of every two adjacent columns are arranged in an up-and-down staggered manner along the length direction of the rectangular array.

[0018] Further, the jack contact piece comprises a plug-in part, an assembly part and a connecting part which are sequentially arranged in front and back, the plug-in part is composed of a front guide end, a rear converging end and a plurality of waist spring sheets connected between the two, the plurality of waist spring sheets are uniformly arranged along the circumference of the annular front guide end, and the waists of the plurality of waist spring sheets can be propped up to the circumferential outside under the force contact when the plug-in part is inserted into the mating pin contact piece;

[0019] The radial width of the assembly part is greater than the widths of the plug-in part and the connecting part, so as to realize the fixing of the jack contact piece in the mounting hole by interference fit with the mounting hole on the insulator;

[0020] The connecting part is in the form of a pin, a deformation through hole is further provided at the center of the connecting part for extrusion deformation when the connecting part is plugged into the printed board, and the material thickness of the connecting part and the assembly part is greater than the material thickness of the plug-in part.

[0021] Further, the plug-in part, the assembly part and the connecting part are integrally formed.

[0022] Further, the mating pin contact piece is inserted into the plug-in part through the front guide end, and the waists of the plurality of waist spring sheets are in conductive contact.

[0023] Further, the number of the waist spring sheets is four, and the four waist spring sheets are adjacent to each other inside the annular front guide end.

[0024] Further, the front guide end and the rear converging end are both in the form of a ring, and the two ends of the plurality of waist spring sheets along the axial direction are respectively limited in the inside of the ring-shaped front guide end and the rear converging end by radial clamping.

[0025] Further, the assembly part is in the form of a plate, and a plurality of through holes for reducing impedance are provided on the plate-shaped assembly part.

[0026] Further, 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 provided on the assembly plate, the radial width of the assembly plate is greater than the widths 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.

[0027] Further, the connecting part and the assembly plate are located in the same plane.

[0028] Further, a hard sheath is sleeved outside the insertion part and the transition plate, and the hard sheath and the assembly plate are in interference fit with the upper narrow part and the lower wide part of the stepped mounting hole respectively to be fixed by force.

[0029] Further, a plurality of lightening grooves are formed at the two ends of the assembly plate in the radial direction.

[0030] Further, the connecting part is in a long strip structure extending in the axial direction of the jack contact, and the connecting part is radially expanded at the position where the deformation through hole is arranged.

[0031] Further, a guide assembly for guiding the mating plug to be connected with the socket connector is further arranged on the shell.

[0032] Further, the guide assembly comprises identification guide pins, a fixing ring and a crown band which are symmetrically arranged at the two ends of the shell, and the guide assembly can be matched with the guide unit arranged on the mating plug to realize the effective plugging of the mating plug and the socket connector.

[0033] Further, a plurality of process holes and process grooves for reducing the warping degree of the insulator during preparation are respectively formed on the surface and the outer side wall of the insulator.

[0034] Further, the plurality of process grooves are uniformly arranged along the circumferential direction of the outer side wall of the insulator, and the plurality of process holes are uniformly formed between the plurality of jack contacts arranged in a rectangular array and arranged in an up-down staggered manner.

[0035] Beneficial effects:

[0036] 1. The socket connector has the advantages of small volume, light weight, high transmission rate, good stability, high integration, multiple signal transmission types, etc. The connector as a whole can integrate the specific signal types required by the user according to the specific needs of the user, and has a wide range of applications. The arrangement of the plurality of pin contact pieces on the insulator in the socket connector is 90-degree staggered arrangement under the overall rectangular assembly structure, that is, the differential pair contact pieces and the ground contact pieces are arranged in a 90-degree vertical staggered manner. This arrangement can not only ensure the necessary creepage distance between the contact pieces to make the transmission rate of the signal higher, but also ensure the stability of signal transmission, and also meet the requirement of small volume of the connector.

[0037] 2. The socket connector has simple jack contact structure and reasonable design. Two main functional parts on the jack contact are mounting part and insertion area. The mounting part is matched with the mounting hole on the insulator, and the insertion area is matched with the pin on the external plug. The elastic spring realizes the close contact with the pin, thereby realizing the stable transmission of the signal and effectively ensuring the reliability of the connector. A hard sheath for structure protection is further arranged outside the insertion area.

[0038] 3. The socket connector of the present application, the mounting hole on the insulator is used to support and fix the jack contact, the mounting hole is set as a stepped hole structure with narrow upper part and wide lower part, the upper part with smaller diameter cooperates with the hard sheath set outside the jack contact to achieve the righting effect of the jack contact, avoiding the damage, shaking deviation and poor stability caused by the overlong cantilever; the lower part with larger diameter is fixed with the mounting part of the jack contact, the fixing mode of the jack contact and the mounting hole is strong fixing, i.e. the two fixing points of the stepped mounting hole are strong fixing structure, and the effect of stable fixing is achieved by the way that the jack contact pierces into the insulator. This mounting mode not only can effectively enhance the firmness of the jack contact, so that the jack contact is not easy to shake after assembly and has good stability, but also can effectively improve the straightness and coaxiality of the jack contact after assembly by the method of two-point fixing support.

[0039] 4. The socket connector of the present application, a plurality of process holes and process grooves are arranged on the insulator, because the length-diameter ratio of the insulator is large, it is prone to warping and poor flowability during preparation and forming. The process holes are added on the surface of the insulator and the process grooves are added on the side, so that the wall thickness of the insulator is uniform, the warping degree of the part is effectively reduced, the flow speed of the material in the mold is improved, and thus the forming rate is improved.

[0040] 5. The jack contact of the present application, which is simple in structure and reasonable in arrangement, can change the current through the matched pin contact into a plurality of parallel current paths by arranging a plurality of waist spring sheets in the plug-in part, and the currents flow to the plurality of waist spring sheets respectively and converge at the rear convergence end connected with the plurality of waist spring sheets, so that the current carrying capacity of the whole jack contact is greatly increased, and the disadvantages caused by the assembly of two parts are avoided. The jack contact can well meet the requirements of miniaturization of the device and has good practical effect.

[0041] 6. The jack contact of the present application, which is integrally formed with the plug-in part, the assembly part and the connecting part, can solve the assembly disadvantages, improve the processing efficiency, reduce the cost, improve the current carrying capacity, reduce the conductive resistance and improve the reliability of the part.

[0042] 7. The jack contact of the present application, by arranging the waist spring sheets with specific structure inside the plug-in part to increase the number of spring sheets, the contact point area between the pin and the jack contact is increased, and thus the current carrying capacity of the contact is greatly improved.

[0043] 8、The jack contact of the present application, the material for making the jack contact is set as a profile structure with thin front and thick back, the thin material of the front end insertion part can ensure soft plugging force, improve mechanical durability and user's feeling, the thick material of the back end assembling part and connecting part can improve part strength, increase its fixity, reliability and connectability. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 is a structural schematic view of the present application;

[0045] Figure 2 is a partial enlarged view of Figure 1

[0046] Figure 3 is a structural schematic view of the jack contact;

[0047] Figure 4 is an A-A direction sectional view after removing the hard sheath; Figure 3

[0048] Figure 5 is an axial sectional view of the jack contact after removing the hard sheath;

[0049] Figure 6 is a schematic view of the fixing mode of the jack contact;

[0050] Figure 7 is a structural schematic view of the insulator.

[0051] BRIEF DESCRIPTION OF DRAWINGS: 1, insertion part, 101, front guide end, 102, waist spring sheet, 103, back convergence end, 2, assembling part, 201, impedance reduction through hole, 202, transition plate, 203, assembling plate, 3, connecting 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

[0052] The technical solutions of the present application will be further described and explained in detail in combination with the drawings and specific embodiments.

[0053] In the description of the present application, it should be understood that the directions or position relations indicated by the terms "up", "down" and the like are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0054] ​​It is to be understood that the terms "first" and "second" and similar

[0055] The application provides a rectangular socket connector capable of transmitting 40Gbps high-speed signals, and relates to a socket contact and belongs to the technical field of high-speed rectangular connectors.

[0056] As shown in the accompanying drawings, Figure 1 The socket connector has the advantages of small volume, light weight, high transmission rate and multiple transmission signal types, and can integrate specific signal types required by users according to specific requirements of the users. Figure 1 The transmission module of high-speed signals.

[0057] The specific structure of the socket connector mainly comprises a signal transmission module, a fixing and supporting structure and a guiding structure, the signal transmission module mainly comprises an insulator 4 and a socket contact, and the transmission of signals is realized by the plug-in of an external plug and the socket connector. The fixing and supporting structure comprises a shell 5, and the fixing and supporting structure plays a role of protection, fixation and support for the signal transmission module; the bottom of the socket contact is a fish-eye structure and can be crimped on a printed board to realize the signal transmission between vertical boards, the socket contact is fixedly installed on the insulator 4; the guiding structure mainly comprises a fixing ring 10, a recognition guide pin 9 and a crown band 6, the recognition guide pin 9 and the recognition guide pin at the end of the external plug guide each other, the crown band 6 and the guide pin at the end of the plug guide each other, and the plug-in of the external plug and the socket contact can be effectively guided to the right position through the guiding structure.

[0058] The socket contact adopted by the application is a new socket contact with simple structure, and the assembly position of the socket contact and the insulator is a rectangular structure, and therefore the application provides a new socket contact arrangement mode. The differential pair contact is arranged along the width direction (the width direction of the insulator 4), and the ground contact of the ground signal is arranged at 90 degrees with the differential pair contact (the length direction of the insulator 4). Figure 2As shown, the three pairs of differential contacts in the first column are arranged vertically, with a grounding contact for a ground signal placed between each pair of differential contacts. In other words, the socket contacts are arranged horizontally and vertically. This ensures both a high signal transmission rate and signal transmission stability, while also meeting the requirement of a small connector size.

[0059] The reason for the 90-degree vertical staggered arrangement is that if the socket contacts are arranged in a 45-degree slant manner, it will result in a thin-walled structure of the insulator, which will reduce the strength of the product and affect its service life. In addition, it will also affect the performance of the product, as the creepage distance between the socket contacts will be reduced, which will affect the voltage withstand performance of the product.

[0060] An over-insertion protection key 13 is provided on the lower surface of the insulator to prevent damage to the mounting hole when the socket contact is over-inserted. The protection key 13 has a raised square structure.

[0061] like Figure 3 As shown, the socket contact of this invention has a simple structure, mainly divided into two parts: a mounting part and a mating area. The mounting part of the socket contact mates with an insulator. Figure 3 The left side of the mounting section features a fisheye structure, primarily used for crimping the printed circuit board. The mating area engages with the pins, utilizing the elasticity of a spring to achieve tight contact, thus ensuring stable signal transmission and effectively guaranteeing connector reliability. Furthermore, a stainless steel tube (rigid sheath) protects the mating area. This socket contact has a simple structure; the main body is integrally molded (mold processing), with subsequent processing primarily involving rolling and electroplating.

[0062] In the socket connector, the insulator 4 is mainly used to fix and support the socket contact. The mounting hole 7 on the insulator is structurally designed as a stepped hole structure, narrower at the top and wider at the bottom. The smaller diameter round hole at the top mates with the rigid sheath covering the socket contact to straighten the socket contact and prevent damage, wobbling, and instability caused by excessive cantilever. The larger diameter square hole at the bottom is fixed to the mounting part of the socket contact. If only the lower square hole is used for fixing the socket contact, the mating area of ​​the socket contact and the insulator will have a clearance fit. The socket contact will only be fixed by the lower mounting part, resulting in a long cantilever and significant wobbling and displacement of the socket contact, making it easy to damage the socket contact during mating. Therefore, the mounting hole on the insulator is a stepped hole. The smaller diameter upper round hole mates with the rigid sheath of the socket contact to straighten the cantilever of the socket contact. This two-point support method effectively improves the straightness and coaxiality of the socket contact after assembly.

[0063] As shown in Figure 6 The fixing mode of the jack contact on the insulator is strong assembly, the fixing effect is achieved by the way that the jack contact pierces into the insulator, and the hard sheath and the upper part of the mounting hole are also in strong assembly, which plays the role of fixing the jack contact on the insulator through the two strong assemblies. This mounting mode can effectively enhance the firmness of the jack contact, so that the jack contact is not easy to shake after assembly and has good stability.

[0064] As shown in Figure 7 The material of the insulator is LCP, and the processing mode is mold forming. The insulator has a large length-diameter ratio, and the parts are prone to warping and poor flowability during forming. To solve this problem, process holes 11 are added to the surface of the insulator, and process grooves 13 are added to the side, so that the wall thickness of the insulator is uniform, the warping degree of the parts is effectively reduced, and the flow speed of the material in the mold is improved.

[0065] The main innovation of the socket connector of the present application is:

[0066] Innovation 1: The arrangement mode of the jack contact adopts a 90-degree staggered arrangement mode.

[0067] Innovation 2: The insulator mounting hole adopts a stepped hole, and the fixing mode of the jack contact adopts a two-point strong assembly mode.

[0068] Innovation 3: The specific setting mode of the jack contact makes it have good stability.

[0069] Example 1

[0070] As shown in the drawings, the socket connector of the present application comprises a shell 5 and an insulator 4 arranged in the shell 5. The insulator 4 is provided with a plurality of mounting holes 7 for assembling jack contacts. The plurality of mounting holes 7 are arranged in a rectangular array structure on the insulator 4, and each mounting hole 7 is in a stepped hole structure with a wide lower part and a narrow upper part. Each jack contact is fixed in the mounting hole 7 by strong assembly with the two sections of different inner diameters of the mounting hole 7. The plurality of jack contacts are divided into differential pair contacts and ground contacts. The assembly directions of the differential pair contacts and the ground contacts in the mounting hole 7 are parallel and perpendicular to the width direction of the rectangular array, respectively. In the width direction of the rectangular array, two differential pair contacts are arranged between every two adjacent ground contacts in each column of uniformly distributed ground contacts. In the length direction of the rectangular array, the ground contacts in every adjacent two columns are arranged in an up-down staggered manner.

[0071] The jack contact piece comprises a plug-in part 1, an assembly part 2 and a connecting part 3 arranged in sequence from front to back, the plug-in part 1, the assembly part 2 and the connecting part 3 are integrally formed, the plug-in part 1 is composed of a front guide end 101, a rear converging end 103 and four pieces of waist spring sheet 102 connected between the front guide end 101 and the rear converging end 103, the four pieces of waist spring sheet 102 are evenly arranged along the circumference of the annular front guide end 101, the four pieces of waist spring sheet 102 are adjacent to each other inside the annular front guide end 101, and the waist parts of the four pieces of waist spring sheet 102 can be lifted to the circumferential outside by force when the plug-in part 1 is inserted into the plug pin contact piece, the plug pin contact piece is inserted into the front guide end 101 of the plug-in part 1, and the waist parts of the four pieces of waist spring sheet 102 are in conductive contact. The front guide end 101 and the rear converging end 103 are both annular structures, and the two ends of the four pieces of waist spring sheet 102 along the axial direction are respectively limited in the inside of the annular front guide end 101 and the rear converging end 103 by radial clamps. The radial width of the assembly part 2 is greater than the width of the plug-in part 1 and the connecting part 3, which is used to be in interference fit with the mounting hole 7 on the insulator 4 to realize the fixation of the jack contact piece in the mounting hole 7. The assembly part 2 is in a plate structure, and a plurality of impedance-reducing through holes 201 are formed in the plate-shaped assembly part 2. The assembly part 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 part 1, a plurality of impedance-reducing through holes 201 are formed in the assembly plate 203, a plurality of weight-reducing grooves are formed at the two ends of the assembly plate 203 along the radial direction, the radial width of the assembly plate 203 is greater than the width of the plug-in part 1 and the connecting part 3, and the central axis of the assembly plate 203 is consistent with the central axis of the plug-in part 1. The connecting part 3 is in a plug pin structure, and a deformation through hole 301 is formed in the center of the connecting part 3 for the deformation of the connecting part 3 when the connecting part 3 is connected with the printed board, and 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. The connecting part 3 and the assembly plate 203 are located in the same plane. A hard sheath 8 is sleeved outside the plug-in part 1 and the transition plate 202, and the hard sheath 8 and the assembly plate 203 are in interference fit with the upper narrow part and the lower wide part of the stepped mounting hole 7 for strong fixation. The connecting part 3 is in a long strip structure extending along the axial direction of the jack contact piece, and the connecting part 3 is radially enlarged at the position where the deformation through hole 301 is formed.

[0072] Further, a guide assembly for guiding the plug to be connected with the socket connector is further arranged on the shell 5. The guide assembly comprises left and right symmetrical identification guide pins 9, a fixed ring 10 and a crown belt 6 arranged at both ends of the shell 5, the guide assembly can be matched with the corresponding guide unit arranged on the plug to be connected, so as to effectively plug the plug with the socket connector.

[0073] Further, a plurality of process holes 11 and process grooves 12 are respectively formed on the surface and the outer sidewall of the insulator 4 for reducing the warpage of the insulator 4 during manufacturing. The plurality of process grooves 12 are uniformly arranged along the circumference of the outer sidewall of the insulator 4, and the plurality of process holes 11 are uniformly formed between the plurality of jack contact elements arranged in a rectangular array and arranged alternately in up and down directions.

[0074] Finally, it should be noted that the above description is only a preferred embodiment of the present application, and is not intended to limit the entire content of the present application. When the product is used, it should be adjusted according to the connector, the structure of the charging socket and the arrangement of the vehicle body. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make formal modifications to the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some technical features, within the scope of the ideas and inspirations of the present application. Any formal modification, equivalent replacement, etc. made within the scope of the ideas and inspirations of the present application should be included in the protection scope of the present application.

Claims

1. A socket connector comprising a housing (5) and an insulator (4) disposed in the housing (5), a plurality of mounting holes (7) for fitting a jack contact are formed in the insulator (4), 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 with a wide lower part and a narrow upper part, and each jack contact is fixed in the mounting hole (7) by being tightly fitted at two sections with different inner diameters of the mounting hole (7); A plurality of jack contacts are divided into differential pair contacts and ground contacts, the assembly directions of the differential pair contacts and the ground contacts in the mounting hole (7) are parallel and perpendicular to the width direction of the rectangular array respectively, and in the width direction of the rectangular array, two differential pair contacts are arranged between every two adjacent ground contacts in each column, and the ground contacts of every adjacent two columns are arranged in an up-down staggered manner along the length direction of the rectangular array; The jack contact comprises a plug-in part (1), an assembly part (2) and a connecting part (3) which are sequentially and abutted arranged, the plug-in part (1) is composed of a front guide end (101), a rear converging end (103) and a plurality of waist spring sheets (102) connected between the two, the plurality of waist spring sheets (102) are uniformly arranged along the circumference of the annular front guide end (101), and the waists of the plurality of waist spring sheets (102) can be lifted to the circumferential outside under stress when the adaptive plug pin contact is inserted; The radial width of the assembly part (2) is greater than the widths of the plug-in part (1) and the connecting part (3), so as to realize the fixation of the jack contact in the mounting hole (7) by interference fit with the mounting hole (7) on the insulator (4); The connecting part (3) is in a plug pin structure, and a deformation through hole (301) is further arranged at the center of the connecting part (3) to be deformed under extrusion when the connecting part (3) is plugged and connected with the printed board, and 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); The plug-in part (1), the assembly part (2) and the connecting part (3) are in an integrated structure.

2. The receptacle connector of claim 1, wherein: The adaptive plug pin contact is inserted into the plug-in part (1) through the front guide end (101) and is in conductive contact with the waists of the plurality of waist spring sheets (102).

3. The receptacle connector of claim 1, wherein: The number of the plurality of waist spring sheets (102) is four, and the four waist spring sheets (102) are adjacent to each other inside the annular front guide end (101).

4. The receptacle connector of claim 1, wherein: The front guide end (101) and the rear converging end (103) are both in a circular ring structure, and the two ends of the plurality of waist spring sheets (102) in the axial direction are respectively radially clamped and limited inside the circular ring front guide end (101) and the rear converging end (103).

5. The receptacle connector of claim 1, wherein: The assembly part (2) is in a plate structure, and a plurality of impedance reduction through holes (201) are arranged on the plate-shaped assembly part (2).

6. The receptacle connector according to claim 1 or 5, wherein: The assembly part (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 part (1), a plurality of impedance reduction through holes (201) are arranged on the assembly plate (203), the radial width of the assembly plate (203) is greater than the widths of the plug-in part (1) and the connecting part (3), and the central axis of the assembly plate (203) is consistent with the central axis of the plug-in part (1).

7. The receptacle connector of claim 6, wherein: The connecting part (3) and the assembly plate (203) are located in the same plane.

8. The receptacle connector of claim 6, wherein: A hard sheath (8) is sleeved outside the insertion part (1) and the transition plate (202), and the hard sheath (8) and the assembly plate (203) are respectively in interference fit with the upper narrow part and the lower wide part of the stepped mounting hole (7) to be fixed by force.

9. The receptacle connector of claim 6, wherein: A plurality of lightening grooves are formed at the two ends of the assembly plate (203) in the radial direction.

10. The receptacle connector of claim 1, wherein: The connecting part (3) is in a long strip structure extending in the axial direction of the jack contact, and the connecting part (3) is radially expanded at the position where the deformation through hole (301) is arranged.

11. The receptacle connector of claim 1, wherein: A guide assembly for guiding the mating plug to be connected with the socket connector is further arranged on the shell (5).

12. The receptacle connector of claim 11, wherein: The guide assembly includes identification guide pins (9), a fixed ring (10) and a crown band (6) symmetrically arranged at the two ends of the shell (5), and the guide assembly can be matched with the corresponding guide unit arranged on the mating plug to effectively connect the mating plug with the socket connector.

13. The receptacle connector of claim 1, wherein: A plurality of process holes (11) and process grooves (12) are respectively formed on the surface and the outer side wall of the insulator (4) to reduce the warping degree of the insulator (4) during preparation.

14. The receptacle connector of claim 13, wherein: The plurality of process grooves (12) are uniformly arranged along the circumference of the outer side wall of the insulator (4), and the plurality of process holes (11) are uniformly formed between the plurality of jack contacts arranged in a rectangular array and arranged in an upper and lower staggered manner.

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