Female socket of electric connector and circuit board assembly

Abstract

The utility model discloses an electric connector female head socket and a circuit board assembly, the female head socket comprises a housing and more than one conductive needle, the more than one conductive needle is respectively embedded in the housing, the bottom surface of the housing is fixedly provided with a buckle which is clamped on a circuit board for auxiliary fixation, and the conductive needle is embedded in the buckle. The connecting structure of the female head socket and the circuit board of the electric connector comprises the female head socket and the circuit board, a buckle hole, a welding hole and an auxiliary positioning hole are formed in the circuit board, a buckle on the female head socket is clamped in the buckle hole, the welding end of a conductive needle is inserted into the welding hole, and the auxiliary positioning hole is formed in the circuit board. The other side, opposite to the female head socket installation position, of the circuit board is welded to the circuit board, and the auxiliary positioning part is inserted into the auxiliary positioning hole to play a role in auxiliary positioning. According to the utility model, the conductive needle is welded and matched with the buckle clamping structure, so that the anti-push-and-pull strength during use can be greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model discloses an electric connector, in particular to an electric connector female socket and circuit board assembly belongs to electronic components and application technical field. BACKGROUND

[0002] An electrical connector is a component used to transmit power or signals between electrical devices. It establishes an electrical connection between devices through metal contacts (pins or plugs), usually used to connect wires, cables or circuit boards, and its main function is to ensure that the current or signal can be transmitted stably and efficiently from one device to another.

[0003] Currently, common connectors are widely used in display devices, industrial equipment, automobiles, consumer electronics, communication equipment and other fields.

[0004] In the design of large LED display screens, the connector female end structure plays a crucial role. As the electrical interface of the display screen, the connector is responsible for transmitting power signals, control signals and other signals to the LED module or panel. Therefore, the design of the connector female end structure must have reliability, durability and good electrical performance.

[0005] In the current market, LED display screens are usually powered by 220V AC mains power supply. In the prior art, the commonly used 220V electrical connector female socket is basically fixed on the PCB by welding the conductive pins. When it is plugged with the male plug, the force point of the conductive pin welding point is small, and the force direction and angle are limited by its own structure, which is easy to cause the female socket to be tilted, and there is an unsafe factor, which is easy to cause accidents during use. In addition, there is no shielding measure between the conductive pins in the current electrical connector female socket, which is easy to cause arc (referring to the process of producing electric arc through power, gas or other means, also known as electric arc discharge, electric arc discharge phenomenon exists in some power equipment, lamps, display screens and other fields), which has safety hazards. SUMMARY

[0006] In view of the above-mentioned safety hazard of the electrical connector female socket in the prior art only using conductive pin welding method to connect with the circuit board, the utility model provides an electrical connector female socket and circuit board assembly, which is provided with an auxiliary fixing buckle structure on the female socket shell, which can make it more firm and safe after installation.

[0007] The technical solution adopted by this utility model to solve its technical problem is: an electrical connector female socket, the female socket includes a shell and conductive pins, one or more conductive pins are provided, one or more conductive pins are respectively embedded in the shell, and a buckle is fixedly provided on the bottom surface of the shell for auxiliary fixation on the circuit board.

[0008] A circuit board assembly includes a circuit board and an electrical connector female socket as described above. The circuit board has a snap-fit ​​hole, a soldering hole, and an auxiliary positioning hole. The snap-fit ​​of the electrical connector female socket is snapped into the snap-fit ​​hole. The soldering end of the conductive pin is inserted into the soldering hole and soldered to the circuit board on the other side of the circuit board relative to the mounting position of the female socket. The auxiliary positioning part is inserted into the auxiliary positioning hole.

[0009] The technical solution adopted by this utility model to solve its technical problem further includes:

[0010] The outer shell is made of plastic.

[0011] The outer casing has an insertion cavity inside, the opening of which is located on the front end face of the outer casing. One or more conductive needle sleeves are fixedly installed inside the insertion cavity, and each conductive needle sleeve contains one conductive needle; and / or,

[0012] The bottom of the insertion cavity is fixedly provided with a foolproof protrusion; and / or

[0013] The insertion cavity is fixedly provided with a snap-fit ​​protrusion.

[0014] The aforementioned latches are provided in two parts, symmetrically arranged on the bottom of the outer casing; and / or

[0015] The buckle includes a buckle foot and an auxiliary foot. A buckle connector is fixedly provided at the bottom end of the buckle foot, and there is a through groove between the buckle foot and the auxiliary foot.

[0016] The rear end of the outer casing is provided with a protective cover, which is integrally formed with the outer casing; and / or

[0017] The protective cover is provided with one or more insulating sheets inside; and / or

[0018] The insulating sheet extends towards the bottom of the outer casing to form an auxiliary positioning portion; and / or

[0019] The top surface of the protective cover is marked with pins.

[0020] The device has three conductive needles and three conductive needle sleeves. Each conductive needle sleeve contains one conductive needle, and the three conductive needle sleeves are arranged side by side.

[0021] The conductive needle is in the shape of "L", one end is a plug-in end, the other end is a welding end, a crown spring accommodating cavity is formed in the plug-in end, and a crown spring is inserted into the crown spring accommodating cavity; and / or

[0022] The crown spring is in the shape of a waist drum; and / or

[0023] The front end of the conductive needle sleeve is provided with a plug-in hole, a blocking step is arranged around the plug-in hole, and the diameter of the plug-in hole is consistent with the inner diameter of the crown spring; and / or

[0024] The crown spring accommodating cavity is provided with a limiting step.

[0025] The outer surface of the conductive needle is provided with a fixing convex ring, the fixing convex ring is provided with an anti-back-off step near one end of the tail of the conductive needle, and the end surface of the anti-back-off step is perpendicular to the central axis of the conductive needle.

[0026] The front end surface of the female socket is flush with the edge position of the circuit board, or the front end surface of the female socket is partially extended to the outside of the edge position of the circuit board.

[0027] The conductive needle structure with the crown spring is adopted, the outer side of the conductive needle is subjected to rubber coating treatment, the arc between the conductive needles can be avoided, meanwhile, the distance between the conductive needles can be extremely small, and the overall width can be smaller, the insulating sheet is arranged at the tail of the conductive needle, the conductive needle is spaced by the insulating sheet, and the arc between the welding end and the conductive needle can be prevented.

[0028] The utility model will be further described in connection with the drawings and specific embodiments. DRAWINGS

[0029] Figure 1 It is the front view structure schematic diagram of the female socket of the utility model.

[0030] Figure 2 It is the rear view structure schematic diagram of the female socket of the utility model.

[0031] Figure 3 It is the left view structure schematic diagram of the female socket of the utility model.

[0032] Figure 4 It is the right view structure schematic diagram of the female socket of the utility model.

[0033] Figure 5 It is the top view structure schematic diagram of the female socket of the utility model.

[0034] Figure 6 It is the bottom view structure schematic diagram of the female socket of the utility model.

[0035] Figure 7 It is a three-dimensional structure schematic view of the female socket of the utility model.

[0036] Figure 8 It is another perspective three-dimensional structure schematic view of the female socket of the utility model.

[0037] Figure 9 It is a third perspective three-dimensional structure schematic view of the female socket of the utility model.

[0038] Figure 10 It is an exploded state structure schematic view of the female socket of the utility model.

[0039] Figure 11 It is a cross-sectional structure schematic view of the female socket of the utility model.

[0040] Figure 12 It is an exploded state cross-sectional structure schematic view of the female socket of the utility model.

[0041] Figure 13 It is a cross-sectional structure schematic view of the conductive needle (with crown spring) of the utility model.

[0042] Figure 14 It is an exploded state cross-sectional structure schematic view of the conductive needle (with crown spring) of the utility model.

[0043] Figure 15 It is a front view structure schematic view of the connecting structure of the utility model.

[0044] Figure 16 It is a rear view structure schematic view of the connecting structure of the utility model.

[0045] Figure 17 It is a left view structure schematic view of the connecting structure of the utility model.

[0046] Figure 18 It is a right view structure schematic view of the connecting structure of the utility model.

[0047] Figure 19 It is a top view structure schematic view of the connecting structure of the utility model.

[0048] Figure 20 It is a bottom view structure schematic view of the connecting structure of the utility model.

[0049] Figure 21 It is a three-dimensional structure schematic view of the connecting structure of the utility model.

[0050] Figure 22 It is an exploded state structure schematic view of the connecting structure of the utility model.

[0051] Figure 23 It is another perspective three-dimensional structure schematic view of the connecting structure of the utility model.

[0052] Figure 24 Another perspective exploded state structure schematic view of the utility model connection structure.

[0053] In the figure, 1 - female socket, 11 - shell, 12 - protective cover, 13 - buckle, 14 - insulating sheet, 15 - auxiliary positioning part, 16 - conductive needle sleeve, 17 - plug cavity, 18 - foolproof convex rib, 19 - pin identification, 110 - clamping convex edge, 111 - buckle foot, 112 - auxiliary foot, 113 - through slot, 114 - clamping head, 115 - plug hole, 116 - blocking step, 2 - conductive needle, 21 - plug end, 22 - welding end, 23 - crown spring, 24 - fixed convex ring, 25 - limiting step, 26 - anti-back step, 27 - crown spring accommodating cavity, 3 - circuit board, 31 - buckle hole, 32 - welding hole, 33 - auxiliary positioning hole. DETAILED DESCRIPTION

[0054] The embodiment is the preferred embodiment of the utility model, and other embodiments having the same or similar principles and basic structures as the embodiment are within the protection scope of the utility model.

[0055] In the utility model, in order that the description is convenient and clear, the front, back, left, right, top and bottom are defined in the direction shown in the accompanying drawings, that is, the front view, back view, left view, right view, top view and bottom view, and the utility model is used in cooperation with the male plug. Figure 1 In the utility model, in order that the description is convenient and clear, the front, back, left, right, top and bottom are defined in the direction shown in the accompanying drawings, that is, the front view, back view, left view, right view, top view and bottom view, and the utility model is used in cooperation with the male plug.

[0056] Please refer to the accompanying drawings Figure 1 to the accompanying drawings Figure 14 The utility model mainly protects a female socket of an electric connector, mainly including a shell 11 and a conductive needle 2, the shell 11 is made of plastic material, the conductive needle 2 is provided with more than one, more than one conductive needle 2 is embedded in the shell 11 respectively, the shell 11 bottom is fixedly provided with a buckle 13, when using, the buckle 13 can be clamped on the circuit board, and the utility model can be fixed by the buckle 13.

[0057] In the embodiment, the shell 11 is internally formed with a plug cavity 17 for accommodating the male plug when the male plug is plugged in, and the opening of the plug cavity 17 is arranged on the front end surface of the shell 11. One or more than one conductive needle sleeve 16 is fixedly arranged in the plug cavity 17, and one conductive needle 2 is inserted into each conductive needle sleeve 16. The conductive needle sleeve 16 is integrally injection molded with the shell 11. Due to the insulation effect of the conductive needle sleeve 16, the conductive needles 2 in the plug cavity 17 will not cause arc phenomenon, so that the spacing between the adjacent conductive needles 2 can be very small, thereby the overall width of the entire product can be minimized compared with the conventional structure. In the embodiment, the plug cavity 17 is fixedly provided with a foolproof convex rib 18 at the bottom, which can play a role of direction identification, and can prevent the male plug from being inserted reversely and causing accidents when the male plug is plugged in. In the embodiment, the foolproof convex rib 18 is arranged in an arc convex rib structure, and one or three or more than three foolproof convex ribs can also be arranged in specific implementation, and the number of the foolproof convex ribs is not limited. The shape and position of the foolproof convex rib 18 can also be set according to actual needs.

[0058] In the embodiment, the plug cavity 17 is fixedly provided with a clamping convex edge 110 inside. When the male plug is inserted, the clamping convex edge 110 can clamp the corresponding structure on the male plug to prevent the male plug from being pulled out. Preferably, the clamping convex edge 110 is arranged on the left and right sides of the plug cavity 17 near the opening of the plug cavity 17. In specific implementation, the clamping convex edge 110 can also be arranged at other positions, such as being arranged on the upper and lower edges, or being arranged at positions other than the opening of the plug cavity 17, or being arranged on the upper, lower, left and right edges. In order to ensure the clamping effect, the clamping convex edge 110 is preferably arranged in a symmetrical structure, and an asymmetrical structure can also be used in specific implementation according to actual needs.

[0059] In the embodiment, the buckles 13 are provided with two, two buckles 13 are symmetrically arranged at the bottom of the shell 11, and in specific implementation, one or more buckles 13 can be arranged, as long as the female socket can be clamped on the circuit board. In the embodiment, the buckle 13 includes a buckle foot 111 and an auxiliary foot 112, and a clamping head 114 is fixedly arranged at the bottom end position of the buckle foot 111. In order to facilitate processing and installation, in the embodiment, the cross section of the buckle foot 111 adopts an arc design, the cross section of the auxiliary foot 112 also adopts an arc design, and a through slot 113 is arranged between the buckle foot 111 and the auxiliary foot 112. In use, the buckle foot 111 is deformed towards the through slot 113 through the extrusion of the clamping head 114, so that it can be smoothly clamped on the circuit board, and after being clamped, the female socket can be prevented from falling off the circuit board due to the limiting effect of the clamping head 114. In specific implementation, the auxiliary foot 112 can also be provided with a clamping head, so that the buckle 13 forms a symmetrical structure. Compared with the structure of the single-sided clamping head 114, the clamping head 114 is arranged on both sides, which is relatively laborious in the installation process. Alternatively, the buckle 13 can be a simple columnar structure such as a cylindrical column, a square column, a triangular column, a strip column, and a special-shaped column, which only has an auxiliary positioning function and does not have a clamping fixing function.

[0060] In the embodiment, the shell 11 is provided with a protective cover 12 at the rear end, and the protective cover 12 is integrally arranged with the shell 11. In function, it is defined as a protective cover and is used for covering the rear end of the conductive needle 2 to prevent people from accidentally touching the conductive needle 2 and causing danger. In the embodiment, more than one insulating sheet 14 is arranged inside the protective cover 12, which is used for isolating the rear end of the conductive needle 2, so that an arc phenomenon does not occur between the rear ends of the conductive needles 2. Preferably, the insulating sheet 14 is arranged in parallel with the left and right side plates of the protective cover 12.

[0061] In the embodiment, the insulating sheet 14 extends towards the bottom of the shell 11 to form an auxiliary positioning portion 15. In installation, the auxiliary positioning portion 15 can be inserted into the circuit board to play an auxiliary positioning role. In the embodiment, the bottom end surface position of the auxiliary positioning portion 15 is lower than the bottom end surface position of the conductive needle 2, that is, after installation, the auxiliary positioning portion 15 can completely shield the welding end of the conductive needle 2, and can also shield the pad and the welding point, so as to prevent an arc phenomenon from occurring at the positions of the conductive needle 2 and the pad, thereby causing danger.

[0062] In the embodiment, the protective cover 12 is provided with a pin identifier 19 on the top surface, so that the function of each conductive needle 2 can be easily known through the pin identifier 19, so that the conductive needle 2 is not connected incorrectly during wiring.

[0063] In the embodiment, the structure of the female socket applied in 220V AC mains is taken as an example to be described in detail, and the structure of the female socket of the utility model can also be applied in other structures, such as three-phase electrical connector, during the specific implementation. In the embodiment, the conductive needle 2 is provided with three, which are respectively used for connecting the fire wire (L), the zero wire (N) and the grounding wire (E), and the conductive needle sleeve 16 is also provided with three correspondingly, one conductive needle 2 is inserted and assembled in each conductive needle sleeve 16, the three conductive needle sleeves 16 are arranged side by side, the conductive needles 2 at two ends are respectively the fire wire (L) and the zero wire (N), and the conductive needle 2 in the middle is the grounding wire (E), and the protective cover 12 top surface is provided with corresponding pin identification 19 at the corresponding position. In the embodiment, the insulating sheet 14 is provided with two correspondingly. During the specific implementation, the conductive needle sleeve 16, the insulating sheet 14 and the pin identification 19 are specifically arranged according to the number and function of the conductive needle 2 used. In the utility model, the three conductive needle sleeves 16 adopt the structure of being arranged side by side in a straight line type, which can effectively reduce the overall height of the whole product.

[0064] In the embodiment, the conductive needle 2 is made of copper material, and during the specific implementation, aluminum or alloy material or other metal materials used in the electrical connector can also be selected according to actual needs.

[0065] In the embodiment, the conductive needle 2 is in the shape of an overall "L" character, one end is defined as the plug-in end 21, and the other end is defined as the welding end 22, the conductive needle 2 is in an integral structure, and the plug-in end 21 and the welding end 22 are only defined according to their functions, the plug-in end 21 is inserted and assembled in the conductive needle sleeve 16, is used for being connected with the male plug, the conductive needle 2 is bent towards the bottom surface of the shell 11, forms the welding end 22, and is used for being welded together with the circuit board.

[0066] In the embodiment, the plug end 21 is internally provided with a crown spring accommodating cavity 27, and the crown spring 23 is inserted into the crown spring accommodating cavity 27. The crown spring 23 is a separate component independent of the conductive needle 2, and the crown spring 23 is in the shape of a waist drum, i.e., the middle part is thin, and the two ends are thick. When the male plug is inserted, the crown spring 23 can be squeezed to deform, so as to ensure that the connection between the male plug and the female socket is more compact, and the electrical connection effect is ensured. In the embodiment, the crown spring 23 is made of a copper sheet wound in a grid shape, i.e., the crown spring 23 includes copper sheets and strip-shaped grooves arranged at intervals. In use, the male plug can push the copper sheets on the crown spring 23 to deform. In the embodiment, the conductive needle sleeve 16 is provided with a plug hole 115 at the front end, which is used for plugging with the conductive structure in the male plug. The plug hole 115 is provided with a blocking step 116 around, so that the diameter of the plug hole 115 is consistent with the inner diameter of the crown spring 23. Preferably, the diameter of the plug hole 115 is equal to the inner diameter of the crown spring 23, or slightly smaller than the inner diameter of the crown spring 23, or slightly larger than the inner diameter of the crown spring 23 and smaller than the outer diameter of the crown spring 23. The crown spring 23 can be blocked by the blocking step 116, so that the male plug will not be pulled out together with the crown spring 23 when pulled out.

[0067] In the embodiment, the crown spring accommodating cavity 27 is provided with a limiting step 25. After the crown spring 23 is inserted into the crown spring accommodating cavity 27, the crown spring 23 can be clamped at the limiting step 25 to prevent the crown spring 23 from being pushed inward during the insertion of the male plug.

[0068] In the embodiment, the conductive needle 2 is provided with a fixed protruding ring 24 on the outer surface. When the conductive needle 2 is inserted into the conductive needle sleeve 16, the fixed protruding ring 24 can be clamped in the conductive needle sleeve 16 to prevent the conductive needle 2 from being pushed out of the conductive needle sleeve 16 by the male plug during the insertion of the male plug. In the embodiment, the fixed protruding ring 24 is provided with an anti-back-off step 26 near one end of the tail of the conductive needle 2. The end surface of the anti-back-off step 26 is perpendicular to the central axis of the conductive needle 2, which can make the anti-back-off effect better. In the embodiment, the fixed protruding ring 24 is provided with two, and in specific implementation, the fixed protruding ring 24 can also be provided with one or more. In the embodiment, the fixed protruding ring 24 structure is preferably used to fix the conductive needle 2 and the conductive needle sleeve 16. In specific implementation, other fixing structures such as a fixed buckle can also be selected for fixing.

[0069] Please refer to the accompanying drawings Figure 16 to the accompanying drawings Figure 24The utility model discloses a kind of line board assemblies, and the connecting structure includes female socket 1 and line board 3 as described above, line board 3 can select PCB, in specific implementation, line board 3 can also select other forms of line board, buckle hole 31, welding hole 32 and auxiliary positioning hole 33 are opened on line board 3, buckle 13 on female socket 1 is clamped in buckle hole 31, and welding end 22 of conductive needle 2 is inserted and welded in welding hole 32, and it is welded together with line board 3 on the other side of line board 3 relative to the installation position of female socket 1, auxiliary positioning part 15 is inserted in auxiliary positioning hole 33, and play auxiliary positioning role.The utility model discloses welding between three conductive needles 2 and line board 3, cooperate with the clamping between two buckles 13 and line board, can promote the anti-pull strength of whole structure, make it more stable compared with the connection mode of simply through conductive needle welding.Simultaneously, the utility model also passes through auxiliary positioning part 15 structure, and its anti-pull strength is stronger, auxiliary positioning part 15 also has the effect of insulating isolation to pad site on line board 3, prevent arc generation between pad and welding end 22 of conductive needle.

[0070] Preferably, the front end face of female socket 1 is flush with the edge position of line board 3 during connection, or the front end face of female socket 1 has part extending to the outside of the edge position of line board 3, so that it is more convenient to operate when plug-in connection operation is performed with male plug.

[0071] The utility model discloses buckle clamping structure through conductive needle welding, can greatly promote the anti-pull strength when using.The utility model adopts the conductive needle structure with crown spring, and the outer side of conductive needle is rubberized, can prevent arc between conductive needles, and also can make the distance between conductive needles extremely small, make the overall width smaller, and the insulating sheet is arranged at the tail of conductive needle, and the conductive needle is spaced through the insulating sheet, can prevent arc between welding end and conductive needle.The conductive needle with crown spring in the utility model adopts a character arrangement, and the overall height can be reduced.

Claims

1. An electrical connector female receptacle, characterized by: The female socket comprises a shell (11) and a plurality of conductive pins (2), the plurality of conductive pins (2) are respectively embedded in the shell (11), and a buckle (13) for assisting fixation on a circuit board is fixedly arranged on the bottom surface of the shell (11); The shell (11) is internally formed with a plug-in cavity (17), the opening of the plug-in cavity (17) is arranged on the front end surface of the shell (11), one or more conductive pin sleeves (16) are fixedly arranged in the plug-in cavity (17), and one conductive pin (2) is embedded in each conductive pin sleeve (16); and / or The bottom of the plug-in cavity (17) is fixedly provided with an anti-fool convex rib (18); and / or The plug-in cavity (17) is internally fixedly provided with a clamping convex edge (110).

2. The electrical connector female jack of claim 1, wherein: The shell (11) is made of plastic material.

3. The electrical connector female jack of claim 1, wherein: The two buckles (13) are symmetrically arranged on the bottom of the shell (11); and / or The buckle (13) comprises a buckle leg (111) and an auxiliary leg (112), a clamping head (114) is fixedly arranged at the bottom end of the buckle leg (111), and a through slot (113) is formed between the buckle leg (111) and the auxiliary leg (112).

4. The electrical connector female jack of claim 1, wherein: The rear end of the shell (11) is provided with a protective cover (12), the protective cover (12) is integrally arranged with the shell (11), one or more insulating sheets (14) are arranged in the protective cover (12), and the insulating sheet (14) extends to the bottom of the shell (11) and forms an auxiliary positioning portion (15); and / or The top surface of the protective cover (12) is provided with a pin mark (19).

5. The electrical connector female jack of claim 1, wherein: The conductive pin (2) is provided with three conductive pin sleeves (16), one conductive pin (2) is embedded in each conductive pin sleeve (16), and the three conductive pin sleeves (16) are arranged side by side.

6. The electrical connector female jack of claim 1, wherein: The conductive pin (2) is in the shape of an "L", one end is a plug-in end (21), the other end is a welding end (22), a crown spring accommodating cavity (27) is formed in the plug-in end (21), and a crown spring (23) is embedded in the crown spring accommodating cavity (27), The crown spring (23) is in the shape of a waist drum; and / or The plug-in end of the conductive pin sleeve (16) is provided with a plug-in hole (115), the plug-in hole (115) is provided with a blocking step (116) around, and the diameter of the plug-in hole (115) is consistent with the inner diameter of the crown spring (23); and / or The crown spring accommodating cavity (27) is provided with a limiting step (25) inside.

7. The electrical connector female jack of claim 1, wherein: The outer surface of the conductive pin (2) is provided with a fixed convex ring (24), the fixed convex ring (24) is provided with an anti-back-off step (26) close to one end of the tail portion of the conductive pin (2), and the end surface of the anti-back-off step (26) is perpendicular to the central axis of the conductive pin (2).

8. A circuit board assembly characterized by: The circuit board assembly comprises a circuit board (3) and the female connector socket (1) as claimed in any one of claims 1 to 7 connected to the circuit board (3), the circuit board (3) is provided with a buckle hole (31), a welding hole (32) and an auxiliary positioning hole (33), the buckle (13) of the female connector socket (1) is buckled in the buckle hole (31), the welding end (22) of the conductive pin (2) is inserted and welded in the welding hole (32), and the auxiliary positioning part (15) is inserted in the auxiliary positioning hole (33).

9. The circuit board assembly of claim 8, wherein: The front end face of the female connector socket (1) is flush with the edge position of the circuit board (3), or the front end face of the female connector socket (1) partially extends to the outside of the edge position of the circuit board (3).

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