Socket connector and combination thereof

Abstract

The utility model discloses a socket connector and a combination thereof. The socket connector comprises an insulating shell and a butt joint terminal fixed on the insulating shell. The insulating shell is provided with a base part and a peripheral wall which is formed by further extending from one end face of the base part along the plugging direction close to the peripheral position. The base part and the peripheral wall jointly form an insertion space with an opening in one end in a surrounding mode. One end surface of the base part along the plugging direction further extends to form a plurality of tongue parts; the tongue parts comprise at least one upper tongue part and at least one lower tongue part, and the upper tongue parts and the lower tongue parts are arranged in a staggered mode in the vertical direction. Each butt-joint terminal comprises a terminal fixing section fixed in the base part, a terminal contact section fixed with the corresponding tongue part and a terminal butt-joint section extending out of the insulating shell, and at least part of the surface of each terminal contact section is exposed out of the tongue part; the at least one upper tongue part and the at least one lower tongue part are integrally connected through a connecting part. The socket connector provided by the utility model has relatively good structural strength.

Description

Technical Field

[0001] The present application relates to the field of connectors, and in particular to a socket connector and a combination thereof. Background Art

[0002] With the development and popularization of electronic technology products, connectors, as a tool for transmitting signals (including electrical signals), are widely used in the connection of electronic equipment such as home appliances, instruments and meters, power tools, automobiles, communication base stations, aerospace and automation equipment.

[0003] Connectors generally include plug connectors and socket connectors, which are used to achieve signal transmission between two devices by mating and plugging the plug connector and the socket connector. Conventional socket connectors generally include a housing and a plurality of terminals fixed in the housing. The front end of the housing is formed with a docking space. Each terminal forms a fixed section fixed in the housing and a cantilevered contact section protruding forward into the docking space. The cantilevered contact section is used to make electrical contact with the docking plug connector. Since the contact section is cantilevered, in some products, the contact section is too thin and weak, and its strength is insufficient and it is easy to bend.

[0004] Therefore, in conventional designs, a plastic tongue is generally extended from the shell into the docking space, and the contact section is partially buried in the plastic tongue to enhance its strength. In conventional designs, generally only one plastic tongue is provided, or multiple plastic tongues that are independent of each other. However, in actual use, it is found that its strength still needs to be improved. Utility Model Content

[0005] The purpose of the present application is to provide a socket connector and a combination thereof, which have better structural strength.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] A socket connector comprises: an insulating housing and a docking terminal fixed to the insulating housing; wherein the insulating housing is formed with:

[0008] base;

[0009] A peripheral wall is formed by extending from one end surface of the base along the plugging and unplugging direction to a position close to the periphery thereof and further along the plugging and unplugging direction;

[0010] The plug-in space is formed by the base and the peripheral wall and is open toward one end along the plug-in and pull-out direction;

[0011] A plurality of tongues are formed by extending one end surface of the base along the plugging and unplugging direction further along the plugging and unplugging direction;

[0012] The plurality of tongue portions include at least one upper tongue portion and at least one lower tongue portion, and the upper tongue portion and the lower tongue portion are staggered in the up-down direction;

[0013] Each of the docking terminals comprises a terminal fixing section fixed in the base, a terminal contact section fixed to the corresponding tongue, and a terminal docking section extending out of the insulating housing for electrical contact with the docking module, and at least part of the surface of each of the terminal contact sections is exposed from the tongue;

[0014] At least one of the upper tongue portions is integrally connected to at least one of the lower tongue portions via a connecting portion.

[0015] Furthermore, there is one upper tongue portion, and two lower tongue portions are provided, and any one of the lower tongue portions is integrally connected to the upper tongue portion via a connecting portion.

[0016] Furthermore, two sides of the upper tongue portion are extended to form extended wing portions; and the two lower tongue portions are respectively arranged opposite to the two extended wing portions at intervals along the up-down direction.

[0017] Furthermore, the two lower tongue portions are not directly connected along the arrangement direction; the two edges of the two lower tongue portions that are close to each other along the arrangement direction are integrally connected to the upper tongue portion through the two connecting portions respectively; the two connecting portions are spaced and arranged relatively along the arrangement direction of the two lower tongue portions.

[0018] Furthermore, the upper tongue portion, the extended wing portion, the connecting portion and the lower tongue portion are connected together to form a "π" shape.

[0019] Furthermore, the docking terminal is assembled by inserting and assembling into the insulating housing along the plugging and unplugging direction; each terminal contact section is affixed to the upper surface or the lower surface of the tongue; each tongue extends at both sides of the corresponding terminal contact section to form a guard wall portion, and the guard wall portion is correspondingly affixed to both sides of the terminal contact section.

[0020] Furthermore, the other end face of the base along the plugging and unplugging direction is further extended along the plugging and unplugging direction to form an extension portion, and the extension portion is recessed along the plugging and unplugging direction to form a plurality of honeycomb grille holes, and a locking arm is formed on the outer peripheral wall of the extension portion, and the end of the locking arm away from the base is integrally connected to the extension portion, and the end of the locking arm close to the base forms a cantilevered free end portion and forms a gap with the base, and the cantilevered free end portion protrudes outward from the outer peripheral wall surface of the extension portion to form a fixing buckle portion, and the cantilevered free end portion of the locking arm can realize elastic swing.

[0021] To achieve the above objectives, this application also provides the following technical solutions:

[0022] A socket connector assembly, comprising a socket connector as described in any one of the above items and a plug connector docking with the socket connector, wherein the plug connector comprises:

[0023] An insulating housing forming a docking cavity with an open end;

[0024] A conductive terminal, fixed in the insulating housing and at least partially exposed in the docking cavity;

[0025] A wire is electrically connected to an end of the conductive terminal away from the opening end of the docking cavity along the plugging and unplugging direction of the docking connector, and the insulating housing covers the periphery of the end of the conductive terminal connected to the conductive terminal;

[0026] The docking cavity matches and corresponds to the tongue of the socket connector.

[0027] Compared with the prior art, the present application has the advantage of having better structural strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional schematic diagram of the plug connector and the socket connector of the present application, specifically showing the three-dimensional schematic diagram of the plug connector and the socket connector before docking.

[0029] Figure 2 It is a top view of the plug connector and the socket connector of the present application, specifically showing a top view of the plug connector and the socket connector after docking.

[0030] Figure 3 It is Figure 2 Section view along line AA.

[0031] Figure 4 It is a front view of the plug connector of the present application.

[0032] Figure 5 It is a partial exploded perspective view of the plug connector of the present application, specifically showing a perspective schematic view of the locking member after being separated from the insulating housing.

[0033] Figure 6 It is a three-dimensional exploded view of the plug connector of the present application.

[0034] Figure 7 This application plug connector is Figure 2 Sectional view along line BB.

[0035] Figure 8 yes Figure 7 A magnified view of the structure within the dashed box.

[0036] Fig. 9 yes Figure 3 A magnified view of the structure within the dashed box.

[0037] Fig.10 It is a three-dimensional schematic diagram of the socket connector of the present application.

[0038] Fig.11 It is a front view of the socket connector of the present application.

[0039] Fig.12 yes Fig.10 A three-dimensional schematic diagram of the middle socket connector viewed from another angle.

[0040] Fig.13 It is a three-dimensional exploded view of the socket connector of the present application. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0042] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "combined", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, the terms "including" and "having" used in this article and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0043] Note: In order to make the description of this application more accurate, all directions involved should be referred to as Figure 1 For reference, the X-axis direction is defined as the plug-in direction; the Y-axis direction is defined as the up-down direction, where the positive direction of the Y-axis is upward; and the Z-axis direction is defined as the left-right direction. The X-axis, Y-axis, and Z-axis are mutually perpendicular.

[0044] Please refer to Figures 1 to 13 As shown, a plug connector and a socket connector for mating with each other disclosed in the present application are shown. The plug connector comprises: an insulating housing 1, a plurality of conductive terminals 2 fixed in the insulating housing 1, a wire 3 electrically connected to one end of the conductive terminal 2, and a locking member 4. The insulating housing 1 comprises a fixed housing 1001 and an outer housing 1002, wherein the fixed housing 1001 forms a mating cavity 10 with an open end.

[0045] The conductive terminals 2 are fixed in the fixed shell 1001 and at least partially exposed in the docking cavity 10. Specifically, each conductive terminal 2 includes a terminal fixing portion 201 fixed in the fixed shell 1001, a terminal elastic portion 202 extending from one end of the terminal fixing portion 201 and elastically protruding into the docking cavity 10, and a terminal docking portion 203 extending from the other end of the terminal fixing portion 201 and protruding out of the fixed shell 1001.

[0046] In the technical solution of the present application, the conductive terminal 2 is fixed to the fixed shell 1001 by assembly, and the wire 3 is electrically connected to one end of the conductive terminal 2 away from the open end of the docking cavity 10 along the plugging and unplugging direction of the docking connector; that is, the wire 3 is electrically connected to the terminal docking portion 203. The outer shell 1002 is integrally injection molded and covers the outer periphery of the fixed shell 1001 and the outer periphery of the end of the wire 3 connected to the conductive terminal 2. The outer shell 1002 surrounds the portion where the terminal docking portion 203 is electrically connected to the wire 3.

[0047] Please refer to Figures 5 to 9 As shown, the lock member 4 is rotatably pivoted to the outside of the insulating housing 1, and the lock member 4 extends along the plugging and unplugging direction. Specifically, the outer side surface of the insulating housing 1 is protrudingly formed with two oppositely arranged lock member fixing platforms 11, and the lock member 4 is formed with a pivoting portion 43 on both sides of the middle position along the plugging and unplugging direction, and the lock member 4 is correspondingly arranged between the two lock member fixing platforms 11, and the inner side surface of each of the lock member fixing platforms 11 is matched with a pivoting portion 12, and the pivoting portion 43 is correspondingly pivoted to the pivoting portion 12. In the drawings of the present application, a preferred embodiment is as follows: the pivot portion 43 is a cylindrical shaft formed by further protruding from both sides of the lock member 4 along the lateral direction, and the pivot portion 12 is a recessed hole (preferably a cylindrical hole) formed by the inner side surface of the lock member fixing platform 11 being recessed inwardly; of course, in other embodiments (not shown), the pivot portion 43 is a recessed hole formed by the two sides of the lock member 4 being recessed inwardly along the lateral direction, and the pivot portion 12 is a cylindrical shaft formed by the inner side surface of the lock member fixing platform 11 protruding inwardly.

[0048] Furthermore, an inclined guide surface 110 is formed on the inner side surface of the locking member fixing platform 11 above the pivoting portion 12; and a matching guide surface 430 matching the inclined guide surface 110 is formed on the end surface of the free end of the pivoting portion 43 near the lower position. When assembling the locking member 4, the locking member 4 only needs to be pressed downward, and the pivoting portion 43 slides into the pivoting portion 12 through the matching guidance of the inclined guide surface 110 and the matching guide surface 430, thereby realizing the rotational pivoting of the locking member 4 and the insulating housing 1.

[0049] In order to allow the lock member 4 to be stably pivoted with the insulating housing 1, the matching guide surface 430 is designed to be completely contained in the pivoting portion 12, and along the arrangement direction (i.e., the lateral direction) of the two lock member fixing platforms 11, the matching guide surface 430 does not expose the transfer portion 120 defined by the lower end of the pivoting portion 12. In other words, when the lock member 4 is assembled with the insulating housing 1 and pivoted, the cylindrical outer peripheral surface of the pivoting portion 43 is matched with the cylindrical inner surface of the pivoting portion 12, and such a design can prevent the lock member 4 from falling off from the pivoting portion 12 when it rotates.

[0050] Please refer to Figures 5 to 9 As shown, the free end of the locking member 4 near the opening end of the docking cavity 10 extends downward to form a safety hook buckle 41, and the safety hook buckle 41 is used to lock and fix with the socket connector. The end of the locking member 4 away from the opening end of the docking cavity 10 extends downward obliquely to form a safety hook spring piece 42, and the free end of the safety hook spring piece 42 can elastically contact the outer surface of the insulating shell 1.

[0051] In the drawings of the present application, a preferred embodiment is as follows: the safety hook spring piece 42 is formed by the end edge of the end of the lock member 4 away from the opening end of the docking cavity 10 being tilted downward and folded back toward the opening end of the docking cavity 10. When the end of the lock member 4 away from the opening end of the docking cavity 10 is pressed downward, the end of the lock member 4 close to the opening end of the docking cavity 10 is swung upward, driving the safety hook buckle 41 to move upward to the unlocking position (the safety hook buckle 41 is unlocked from the socket connector). When the external force pressing down on the end of the lock member 4 away from the opening end of the docking cavity 10 is removed, the self-elastic force of the safety hook spring piece 42 will drive the end of the lock member 4 away from the opening end of the docking cavity 10 to swing upward, and the end of the lock member 4 close to the opening end of the docking cavity 10 is swung downward, driving the safety hook buckle 41 to move downward to the locking position (the safety hook buckle 41 is locked with the socket connector). Of course, there can be another embodiment: the safety hook spring piece 42 is formed by bending the end edge of the end of the lock member 4 away from the opening end of the docking cavity 10 downward and tilting back toward the opening end away from the docking cavity 10 .

[0052] Please refer to Figure 5 , Figure 6 and Fig. 9As shown, the lower surface of the locking member 4 is defined to form a clearance surface 401 at the end away from the opening end of the docking cavity 10. The other parts of the lower surface of the locking member 4 except the clearance surface 401 are defined to form a contact surface 402 (of course, this includes the case where the clearance surface 401 and the contact surface 402 are transitioned through an inclined surface or an arc surface). A step difference is formed between the clearance surface 401 and the contact surface 402, and the clearance surface 401 is located above the contact surface 402. The projection of the safety hook spring piece 42 in the up and down directions completely falls on the clearance surface 401. The pivoting portion 43 falls into the extension range of the contact surface 402 in the plug-in and pull-out direction. The space formed by the clearance surface 401 can make way for the safety hook spring piece 42.

[0053] Furthermore, the outer side surface of the insulating housing 1 is protruded to form two oppositely arranged pressing limit platforms 13, and the safety hook spring piece 42 is correspondingly located between the two pressing limit platforms 13. In the up-down direction, the clearance surface 401 is lower than the upper edge of the pressing limit platform 13. In the up-down direction, the upper surface of the portion of the lock member 4 overlapping with the projection of the safety hook spring piece 42 is higher than the upper edge of the pressing limit platform 13. Such a design can ensure that the lock member 4 does not swing during the rotation process, and can limit the user from excessively pressing down on the end of the lock member 4 where the safety hook spring piece 42 is located to a certain extent.

[0054] Please refer to Figure 5 and Figure 6 As shown, a step is formed between the front section outer side surface 101 close to the opening end of the docking cavity 10 and the rear section outer side surface 102 away from the opening end of the docking cavity 10 along the plug-in direction on the outer side surface of the insulating housing 1. A locking member limiting front boss 1021 is formed on the rear section outer side surface 102 of the insulating housing 1 at a position close to the front section outer side surface 101, and the locking member limiting front boss 1021 is located directly below the locking member 4 in the up-down direction. When the safety hook undercut 41 moves downward to the locking position, the contact surface 402 of the locking member 4 stops on the locking member limiting front boss 1021. The safety hook undercut 41 is located directly above the front section outer side surface 101 in the up-down direction.

[0055] Furthermore, a locking member limiting rear convex 1022 is formed on the rear outer side surface 102 of the insulating housing 1, and the locking member limiting rear convex 1022 is located directly below one end of the contact surface 402 close to the yielding surface 401 in the up-down direction. When the safety hook buckle 41 moves upward to the unlocking position, the contact surface 402 of the locking member 4 stops on the locking member limiting rear convex 1022 and is separated from the locking member limiting front convex 1021. A preferred embodiment is that the upper surface of the locking member limiting rear convex 1022 is designed to be an arc or inclined plane shape to adapt to the rotational movement of the locking member 4, and to ensure that the upper surface of the locking member limiting rear convex 1022 and the locking member 4 form a surface contact.

[0056] Please refer to Fig. 9 And take a screenshot Figure 6 As shown, the outer side surface 102 of the insulating housing 1 is formed with a step portion 1023 at a position close to the free end of the safety hook spring piece 42. When the safety hook buckle 41 moves upward to the unlocking position, the free end of the safety hook spring piece 42 can abut against the step portion 1023. When the safety hook buckle 41 moves downward to the locking position, the free end of the safety hook spring piece 42 does not abut against the step portion 1023. Such a design allows the free end of the safety hook spring piece 42 to slide on the outer side surface 102 of the insulating housing 1 to a certain distance toward the end where the opening end of the docking cavity 10 is located and then stop at the step portion 1023. A more obvious pressing stop effect is formed to prevent the end of the lock member 4 away from the opening end of the docking cavity 10 from being excessively pressed downward and the folded connection position with the safety hook spring piece 42 from being excessively bent and broken. The overall service life of the lock member 4 is improved.

[0057] Please refer to Figures 1 to 3 and Figures 10 to 13 As shown, the socket connector includes an insulating housing 5 and a plurality of docking terminals 6 fixed in the insulating housing 5. The insulating housing 5 includes a base 51 and a peripheral wall 52 formed by extending from one end surface of the base 51 along the plug-in direction and near the surrounding position in the plug-in direction. The base 51 and the peripheral wall 52 are jointly formed to enclose a plug-in space 50 that is open to one end along the plug-in direction. One end surface of the base 51 along the plug-in direction is further extended along the plug-in direction to form a plurality of tongues 53, and the plurality of tongues 53 protrude into the plug-in space 50. Each docking terminal 6 includes a terminal fixing section 61 fixed in the base 51, a terminal contact section 62 fixed to the corresponding tongue 53, and a terminal docking section 63 extending out of the insulating housing 5 for electrical contact with the docking module, and at least part of the surface of each terminal contact section 62 exposes the tongue 53.

[0058] In the embodiment of the present application, the plurality of tongue portions 53 include at least one upper tongue portion 531 and at least one lower tongue portion 532, and the upper tongue portion 531 and the lower tongue portion 532 are staggered in the vertical direction. Among them, at least one upper tongue portion 531 and at least one lower tongue portion 532 are integrally connected through a connecting portion 54.

[0059] One embodiment is: the upper tongue portion 531 is provided with one, the lower tongue portion 532 is provided with two, and any one of the lower tongue portions 532 is integrally connected to the upper tongue portion 531 through a connecting portion 54. An extension wing portion 5311 is extended on both sides of the upper tongue portion 531. The two lower tongue portions 532 are arranged opposite to the two extension wings 5311 in the up-down direction. The two lower tongue portions 532 are not directly connected along the arrangement direction. The two edges of the two lower tongue portions 532 that are close to each other in the arrangement direction are integrally connected to the upper tongue portion 531 through the two connecting portions 54. The two connecting portions 54 are arranged opposite to each other along the arrangement direction of the two lower tongue portions 532. The upper tongue portion 531, the extension wing portion 5311, the connecting portion 54 and the two lower tongue portions 532 are connected together to form a "π" shape. Such a design can form a more stable structure between the tongue 531 and the connecting portion 54, and can effectively prevent the tongue 531 from bending or even breaking when docking with the plug connector.

[0060] Of course, in other embodiments, the upper tongue portion 531 may be provided in plurality, and the lower tongue portion 532 may be provided in plurality. In a more preferred embodiment, each upper tongue portion 531 is integrally connected to at least one lower tongue portion 532 via a connecting portion 54, and each lower tongue portion 532 is integrally connected to at least one upper tongue portion 531 via a connecting portion 54, so that a structure without a single upper tongue portion 531 or lower tongue portion 532 is formed. When only one upper tongue portion 531 is provided, and only one lower tongue portion 532 is provided, the upper tongue portion 531 and the lower tongue portion 532 may be integrally connected via a connecting portion 54 on the same side in the transverse direction.

[0061] Furthermore, the docking terminal 6 is assembled by inserting and assembling into the insulating housing 5 along the plugging and unplugging direction. Each of the terminal contact sections 62 is attached to the upper surface or the lower surface of the tongue 53. Each of the tongues 53 is extended to form a protective wall portion 55 at both sides of the corresponding terminal contact section 62, and the protective wall portion 55 is attached to both sides of the terminal contact section 62. The protective wall portion 55 can effectively protect the terminal contact section 62, reduce the chance of foreign matter being mistakenly inserted between the upper surface of the tongue 53 and the lower surface of the terminal contact section 62, and ensure that the upper surface of the tongue 53 and the lower surface of the terminal contact section 62 are tightly attached and stably combined.

[0062] Please refer to Fig.12 and Fig.13 As shown, the other end surface of the base 51 along the plugging and unplugging direction further extends along the plugging and unplugging direction to form an extension portion 56, and the extension portion 56 is recessed along the plugging and unplugging direction to form a plurality of honeycomb grid holes 560, and a locking arm 561 is formed on the peripheral wall of the extension portion 56, and the end of the locking arm 561 away from the base 51 is integrally connected to the extension portion 56, and the end of the locking arm 561 close to the base 51 forms a cantilevered free end portion and forms a gap with the base 51, and the cantilevered free end portion protrudes outwardly from the peripheral wall surface of the extension portion 56 to form a fixing buckle 562, and the cantilevered free end portion of the locking arm 561 can realize elastic swing. The locking arm 561 is used to fix the socket connector 200 to the device body. Specifically, a mounting hole (not shown) is formed on the device housing or the mainboard component (not shown), the extension portion 56 of the socket connector 200 is correspondingly inserted into the mounting hole, and the fixing buckle portion 562 of the locking arm 561 is correspondingly locked and stopped on the surface around the mounting hole of the device housing or the mainboard component to form an assembled fixation.

[0063] Please refer to the figure to Figure 4 As shown, when the socket connector 200 is mated with the plug connector 100, the tongue 53 of the socket connector is matched and plugged with the mating cavity 10 of the plug connector 100. The safety hook undercut 41 of the plug connector 100 corresponds to the locked portion 57 formed on the outer surface of the peripheral wall 52 of the socket connector 200 and is locked and fixed along the plugging and unplugging direction. Specifically, the locked portion 57 can be a groove structure formed by the outer surface of the peripheral wall 52 being recessed downward, or a convex structure formed by the outer surface of the peripheral wall 52 protruding outward.

[0064] The socket connector 200 and the plug connector 100 designed by the present application have at least the following advantages: the socket connector 200 and the plug connector 100 can achieve stable docking lock, the locking member 4 has a long service life, and the tongue 53 of the socket connector 200 has a stable and firm structure and is not easy to break.

[0065] Obviously, the embodiments described above are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

Claims

1. A socket connector, characterized in that: include: An insulating housing and a docking terminal fixed to the insulating housing; wherein the insulating housing is formed with: base; A peripheral wall is formed by extending from one end surface of the base along the plugging and unplugging direction to a position close to the periphery thereof and further along the plugging and unplugging direction; The plug-in space is formed by the base and the peripheral wall and is open toward one end along the plug-in and pull-out direction; A plurality of tongues are formed by extending one end surface of the base along the plugging and unplugging direction further along the plugging and unplugging direction; The plurality of tongue portions include at least one upper tongue portion and at least one lower tongue portion, and the upper tongue portion and the lower tongue portion are staggered in the up-down direction; Each of the docking terminals comprises a terminal fixing section fixed in the base, a terminal contact section fixed to the corresponding tongue, and a terminal docking section extending out of the insulating housing for electrical contact with the docking module, and at least part of the surface of each of the terminal contact sections is exposed from the tongue; At least one of the upper tongue portions is integrally connected to at least one of the lower tongue portions via a connecting portion.

2. The socket connector according to claim 1, characterized in that: The upper tongue portion is provided with one, and the lower tongue portions are provided with two, and any one of the lower tongue portions is integrally connected with the upper tongue portion via a connecting portion.

3. The socket connector according to claim 2, characterized in that: Both sides of the upper tongue portion are extended to form extended wings; The two lower tongue portions are respectively arranged opposite to the two extending wing portions at intervals along the up-down direction.

4. The socket connector according to claim 2, wherein: The two lower tongue portions are not directly connected along the arrangement direction; Two edges of the two lower tongues that are close to each other along the arrangement direction are integrally connected to the upper tongue via the two connecting portions respectively; The two connecting portions are arranged opposite to each other along the arrangement direction of the two lower tongue portions.

5. The socket connector according to claim 3, characterized in that: The upper tongue portion, the extended wing portion, the connecting portion and the lower tongue portion are connected together to form a "π" shape.

6. The socket connector according to any one of claims 1 to 5, characterized in that: The butt terminal is assembled by inserting and assembling into the insulating housing along the plugging and unplugging direction; Each of the terminal contact sections is attached to the upper surface or the lower surface of the tongue; Each of the tongues is extended at two sides of the corresponding terminal contact section to form a protective wall portion, and the protective wall portion is correspondingly attached to two sides of the terminal contact section.

7. The socket connector according to claim 1, wherein: The other end face of the base along the plugging and unplugging direction is further extended along the plugging and unplugging direction to form an extension portion, the extension portion is recessed along the plugging and unplugging direction to form a plurality of honeycomb grille holes, a locking arm is formed on the outer peripheral wall of the extension portion, one end of the locking arm away from the base is integrally connected to the extension portion, one end of the locking arm close to the base forms a cantilevered free end portion and forms a gap with the base, the cantilevered free end portion protrudes outwardly from the outer peripheral wall surface of the extension portion to form a fixing buckle portion, and the cantilevered free end portion of the locking arm can realize elastic swing.

8. A socket connector assembly, characterized in that: The invention comprises a socket connector as claimed in any one of claims 1 to 7 and a plug connector docking with the socket connector, wherein the plug connector comprises: An insulating housing forming a docking cavity with an open end; A conductive terminal, fixed in the insulating housing and at least partially exposed in the docking cavity; A wire is electrically connected to an end of the conductive terminal away from the opening end of the docking cavity along the plugging and unplugging direction of the docking connector, and the insulating housing covers the periphery of the end of the conductive terminal connected to the conductive terminal; The docking cavity matches and corresponds to the tongue of the socket connector.

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