Socket electric connector and electric connector combination

Abstract

The utility model discloses a socket electric connector and an electric connector combination, and an insulation body of the socket electric connector is provided with a connecting rib which is connected with a far-end wall of a signal butt joint groove and a row of common walls between a power supply butt joint groove and the signal butt joint groove. The barrier between two adjacent power supply butt joint grooves is connected with the common wall and is aligned with the connecting ribs up and down, so that the overall strength of the common wall, the far-end wall and the insulating body is enhanced, and whether a plug electric connector is matched or not can be identified through the connecting ribs; other different types of plug electric connectors are prevented from being inserted and collided with the socket signal terminal, and the electric connection stability of the electric connector combination is improved.

Description

Technical field

[0001] The utility model relates to a socket electric connector and an electric connector combination, in particular to a socket electric connector and an electric connector combination for transmitting power and signals. [Background Technology]

[0002] There is an existing socket electrical connector, comprising an insulating body, wherein the insulating body is provided with a plurality of power slots extending through the front and rear to accommodate a plurality of socket power terminals in a one-to-one correspondence, a drawer-shaped fixing seat with an upper opening is assembled and fixed upwardly to the insulating body, and the opening is located below the plurality of power slots, and a longitudinal signal slot is recessed at the front end of the fixing seat, and a plurality of socket signal terminals fixed to the fixing seat are arranged in a row at equal distances and extend to the signal slot; however, since the fixing seat is assembled and fixed, and the signal slot is continuously arranged longitudinally, the strength of the distal end wall of the fixing seat opposite to the opening is relatively weak, and when the fixing seat is in contact with the corresponding plug When the electrical connectors are plugged in, the plugging force exerted on the distal wall by the plug is relatively large, which may cause the fixing seat to loosen or deform, thereby causing the position of the socket signal terminal to shift, resulting in poor docking effect between the socket electrical connector and the corresponding plug electrical connector; and since the signal slot is not provided with an anti-misplugging structure, when different types of plug electrical connectors are inserted into the signal groove, the spacing of the plug signal terminals may not correspond to the spacing of the socket signal terminals, resulting in the insulating plastic of the misplugged plug electrical connector colliding with the socket signal terminals, causing the socket signal terminals to be crooked or even broken.

[0003] Therefore, it is necessary to design an improved socket electrical connector and an electrical connector assembly to solve the above technical problems. [Utility Model Content]

[0004] In response to the problems of the background technology, the purpose of the present invention is to provide a socket electrical connector and an electrical connector combination in which a connecting rib is provided in a signal docking slot to connect the common wall and the distal wall, and the connecting rib is aligned up and down with one of the partitions to enhance the strength of the common wall and the distal wall and prevent other plug electrical connectors from being misplugged.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a socket electrical connector, characterized in that it includes: an insulating body, the front end of the insulating body is recessed backward to form a plurality of power docking slots and a signal docking slot, at least one of the power docking slots is provided with a first anti-mistake portion, each of the power docking slots is further recessed backward to form a power mounting hole, and the signal docking slot is further recessed backward to form at least two signal mounting holes, a plurality of the power docking slots are arranged in at least one row along the left and right directions, a partition is provided between each adjacent two power docking slots in a row, the signal docking slot has a common wall on one side along the up and down directions to integrally connect a row of the power docking slots, and the signal docking slots are The other side has a distal wall, and a connecting rib is provided in the signal docking groove and connects the common wall and the distal wall, and the connecting rib is aligned with the partition between the two adjacent power docking grooves in the up and down directions; a plurality of socket power terminals are fixed one by one to the plurality of power mounting holes and extend to their respective corresponding power docking grooves; at least two socket signal terminals are fixed one by one to the signal mounting holes and extend to the same signal docking groove, each of the socket signal terminals includes a signal contact portion located in the signal docking groove and a signal welding portion extending out of the insulating body, and at least two of the signal contact portions are respectively located on the left and right sides of the connecting rib.

[0006] Furthermore, a plurality of the socket signal terminals are respectively provided on the left and right sides of the connecting rib, a first spacing is provided between the two signal contact portions closest to the left and right sides of the connecting rib, and a second spacing is provided between the two signal contact portions located on the same side of the connecting rib and adjacent to each other, and the first spacing is greater than the second spacing.

[0007] Furthermore, there is a third spacing between the two signal welding portions closest to the left and right sides of the connecting rib among the multiple socket signal terminals, and a fourth spacing between the two signal welding portions located on the same side of the connecting rib and adjacent to each other, the third spacing is equal to the fourth spacing, and both the third spacing and the fourth spacing are smaller than the first spacing.

[0008] Furthermore, each of the socket signal terminals has a signal fixing portion that connects the signal contact portion and the signal welding portion and is fixed to the corresponding signal mounting hole. The width of each of the signal fixing portions in the left-right direction is greater than the width of the signal contact portion and the signal welding portion. A cut-off portion is provided at the rear end of each of the signal fixing portions on one side of the signal welding portion. In the left-right direction, the signal welding portion of each of the socket signal terminals is closer to the center line of the connecting rib extending along the front-to-back direction than the cut-off portion.

[0009] Furthermore, the connecting rib is connected to the rear wall surface of the signal docking groove, the extending length of the connecting rib in the front-to-back direction is smaller than the recessed depth of the signal docking groove in the front-to-back direction, and the front end surface of the connecting rib is closer to the front than the front end surface of each signal contact portion.

[0010] Furthermore, the first anti-foolproofing portion is formed by an oblique protrusion from a corner of each of the power docking slots, and the first anti-foolproofing portions in a row of the power docking slots connected to the common wall are all connected to the common wall, and the connecting rib is located in the center of the signal docking slot. Multiple first anti-foolproofing portions are respectively located on the left and right sides of the center line of the connecting rib along the up and down direction and are symmetrically arranged with respect to the center line.

[0011] Furthermore, the number of the socket signal terminals on the left and right sides of the connecting rib is equal, the socket signal terminals on one side of the connecting rib in the left-right direction are used for signal input, and the socket signal terminals on the other side of the connecting rib in the left-right direction are used for signal return.

[0012] Furthermore, the rear wall of the insulating body is recessed forward to form a recessed space corresponding to the area where the socket power terminal is provided, and the front wall of the recessed space is protruding backward with a plurality of bosses, and the plurality of power mounting holes pass through the plurality of bosses one by one in the front-to-back direction. The recessed space has a partition wall on one side along the up-down direction that integrally connects the plurality of signal mounting holes to separate the signal mounting holes and the power mounting holes, and a first reinforcing rib is connected between the outer wall surfaces of every two adjacent bosses in the left-right direction, and a second reinforcing rib is connected between the outer wall surfaces of every two adjacent bosses in the up-down direction and between the outer wall surface of each boss in a row of bosses close to the partition wall and the partition wall.

[0013] Furthermore, the insulating body is provided with a snap portion on one side along the up-down direction. In the up-down direction, the snap portion is located on the side of the insulating body away from the signal docking slot. The snap portion is aligned with the partition located in the middle and the connecting rib.

[0014] The present invention also adopts the following technical solution: a socket electrical connector, characterized in that it includes: an insulating body, the front end of the insulating body is recessed backward to form a plurality of power docking slots and a signal docking slot, at least one of the power docking slots is provided with a first anti-mistake portion, each of the power docking slots is further recessed backward to form a power mounting hole, and the signal docking slot is further recessed backward to form at least two signal mounting holes, a plurality of the power docking slots are arranged in at least one row along the left and right directions, a partition is provided between each adjacent two power docking slots in a row, the signal docking slot has a common wall on one side along the up and down direction to integrally connect a row of the power docking slots, the other side of the signal docking slot has a distal wall, and a connecting rib is provided at The signal docking slot is inside and connects the common wall and the distal wall; a plurality of socket power terminals are fixed one by one to the plurality of power mounting holes and extend to the respective corresponding power docking slots; at least two socket signal terminals are fixed one by one to the signal mounting holes and extend to the same signal docking slot, each of the socket signal terminals includes a signal contact portion located in the signal docking slot and a signal welding portion extending out of the insulating body, the connecting rib separates the plurality of signal contact portions in the left-right direction, in the left-right direction, the socket signal terminal located on one side of the connecting rib is used for signal input, and the socket signal terminal located on the other side of the connecting rib is used for signal return.

[0015] Furthermore, the number of the socket signal terminals in a portion located on the left side of the connecting rib is equal to the number of the socket signal terminals in another portion located on the right side of the connecting rib, a first spacing is provided between the two signal contact portions closest to the left and right sides of the connecting rib, and a second spacing is provided between the two signal contact portions located on the same side of the connecting rib and adjacent to each other in the left-right direction, and the first spacing is greater than the second spacing.

[0016] The present invention also adopts the following technical solution: an electrical connector combination, comprising a socket electrical connector and a plug electrical connector plugged into the socket electrical connector, characterized in that: the socket electrical connector comprises an insulating body, the front end of the insulating body is recessed backward to form a plurality of power docking slots and a signal docking slot, at least one of the power docking slots is provided with a first anti-mistake portion, each of the power docking slots is further recessed backward to form a power installation hole, the signal docking slot is further recessed backward to form at least two signal installation holes, a plurality of the power docking slots are arranged in at least one row along the left and right directions, a partition is provided between each adjacent two power docking slots in a row, and the signal docking slots are arranged along the upper and lower directions. One side of the direction has a common wall integrally connected to a row of the power docking slots, the other side of the signal docking slot has a distal wall, a connecting rib is provided in the signal docking slot and connects the common wall and the distal wall, a plurality of socket power terminals are fixed to the plurality of power mounting holes and extend to the respective corresponding power docking slots, at least two socket signal terminals are fixed to the signal mounting holes and extend to the same signal docking slot, each of the socket signal terminals includes a signal contact portion located in the signal docking slot and a signal welding portion extending out of the insulating body, the connecting rib connects at least two signal contact portions located in the signal docking slot along Spaced apart in the left and right directions; the plug electrical connector includes a plug body, the plug body includes a plug base and at least one row of power plug posts formed as a whole along the front-to-back direction from the plug base and a signal plug post located on one side of a row of power plug posts in the up-down direction, a plurality of power terminal holes are provided through the plug base along the front-to-back direction, one corresponding to each row of power plug posts, at least two signal terminal holes are provided through the plug base along the front-to-back direction, both of which pass through the signal plug posts, a plurality of plug power terminals are correspondingly accommodated in the plurality of power terminal holes, at least two plug signal terminals are respectively correspondingly accommodated in at least two of the signal terminal holes, and the signal plug posts are away from the One end of the plug base is provided with a recessed area along the front-to-back direction, and the recessed area is located between two adjacent signal terminal holes along the left-to-right direction. At least one of the power plug posts is provided with a second anti-mistake portion. When the plug electrical connector is docked with the socket electrical connector along the front-to-back direction, the second anti-mistake portion cooperates with the first anti-mistake portion to prevent mistakes. A row of the power plug posts are inserted into a row of the power docking slots one by one so that each of the plug power terminals is electrically connected to each of the socket power terminals one by one. The signal plug posts are inserted into the signal docking slots and the connecting ribs enter the recessed area, and each of the plug signal terminals is electrically connected to each of the socket signal terminals one by one.

[0017] Furthermore, in the front-to-back direction, the recessed depth of the recessed area is smaller than the protruding length of the signal plug post from the plug base, and the signal plug post is provided with a plurality of signal terminal holes on the left and right sides of the recessed area, respectively. The plurality of plug signal terminals are respectively accommodated in the plurality of signal terminal holes in a one-to-one correspondence, and the distance between the two signal terminal holes closest to the left and right sides of the recessed area is greater than the distance between the two signal terminal holes located on the same side of the recessed area and adjacent to each other.

[0018] Furthermore, a plurality of the socket power terminals are correspondingly installed in the plurality of the power mounting holes and enter the plurality of the power docking slots to be arranged in two rows in the upper and lower directions, wherein each of the socket power terminals in one row has a positive contact portion located in the corresponding power docking slot for transmitting positive current, and each of the socket power terminals in the other row has a negative contact portion located in the corresponding power docking slot for transmitting negative current, and in the front-to-back direction, the distance between the positive contact portion and the front end surface of the insulating body is greater than the distance between the negative contact portion and the front end surface of the insulating body, and a plurality of the plug power terminals correspond The power terminal holes are accommodated in two rows to be arranged in two rows, one above the other. Each of the plug power terminals has a power docking portion, and the two rows of power docking portions are used to respectively connect with a row of positive contact portions and a row of negative contact portions. Each of the plug signal terminals has a signal docking portion used to contact the signal contact portion of the corresponding socket signal terminal. When the negative contact portions in one row just contact the power docking portions in the corresponding row, in the front-to-back direction, the distance between the positive contact portions in the other row and the corresponding power docking portions in the other row is smaller than the distance between the signal contact portions and the corresponding signal docking portions.

[0019] Furthermore, a snap-on portion is protruded from one side of the insulating body along the up-down direction, and an extension arm extending along the front-to-back direction is provided on one side of the plug body along the up-down direction. A snap-on groove is recessed at one end of the extension arm along the up-down direction. A row of the negative electrode contact portions first contacts with a corresponding row of the power docking portions, and then a row of the positive electrode contact portions contacts with another corresponding row of the power docking portions. A row of the signal contact portions further contacts with a corresponding row of the signal docking portions, and the snap-on portion is finally snap-connected and fixed to the snap-on groove.

[0020] Compared with the prior art, the present invention has the following beneficial effects: the power docking slot is provided with the first anti-mistake part to correspond to the second anti-mistake part of the power plug post to prevent the power plug post from being plugged into the power docking slot in the wrong direction; the connecting rib is provided in the signal docking slot and connects the common wall and the distal wall, thereby enhancing the strength of the common wall and the distal wall; the partition is connected to the common wall and is aligned with the connecting rib up and down, thereby further enhancing the overall strength of the common wall and the insulating body; and the connecting rib is provided in the signal docking slot to identify whether the plug electrical connector is adapted, thereby achieving an anti-misplugging effect, thereby preventing other different types of plug electrical connectors from being inserted and hitting the socket signal terminal, thereby ensuring that the socket signal terminal and the plug signal terminal can be accurately and firmly plugged in one by one, thereby improving the electrical connection stability of the electrical connector combination.

Brief Description of the Drawings

[0021] Figure 1 This is a three-dimensional exploded view of the electrical connector assembly of the present invention;

[0022] Figure 2 This is a schematic diagram of the electrical connector assembly of the present invention flipped 180 degrees before docking;

[0023] Figure 3 This is a cross-sectional view of the negative electrode contact portion of the present invention when it is just in contact with the corresponding power supply docking portion;

[0024] Figure 4 This is a cross-sectional view of the signal contact portion of the present invention when it is just in contact with the corresponding signal docking portion;

[0025] Figure 5 This is a cross-sectional view of the electrical connector assembly of the present invention after docking;

[0026] Figure 6 This is a side view of the electrical connector assembly of the present invention after docking;

[0027] Figure 7 For the utility model Figure 6 Cross-sectional view along AA direction;

[0028] Figure 8 It is a three-dimensional schematic diagram of the socket electrical connector of the present utility model;

[0029] Figure 9 This is a front view of the socket electrical connector of the present invention;

[0030] Figure 10 For the utility model Figure 9 Cross-sectional view along direction BB;

[0031] Figure 11 For the utility model Figure 9 Cross-sectional view along CC direction;

[0032] Figure 12 This is a top view of the socket signal terminal of the present utility model;

[0033] Figure 13 This is a front view of the plug electrical connector of the present invention.

[0034] Insulation body 1 Power docking slot 11 The first foolproofing part 111 Fence 112 Power supply mounting hole 12 Public Wall 13 Signal docking slot 14 Connecting rib 141 Guide surface 1411 distal wall 142 Signal mounting hole 15 Recessed space 16 First reinforcing rib 161 Second reinforcing rib 162 Boss 17 Next door 18 Buckle portion 19 Socket power terminal 2 Positive electrode contact portion 21 Negative electrode contact portion 22 Power supply fixing portion 23 First interference portion 231 Power supply welding unit 24 Socket signal terminal 3 Signal contact part 31 Signal fixing unit 32 Second interference part 321 Cutting section 322 Signal welding part 33 First distance D1 The second distance D2 The third distance D3 Fourth distance D4 Plug body 4 Plug base 41 Power socket 42 The second foolproof part 421 Signal plug column 43 Depression area 431 Power terminal hole 44 Signal terminal hole 45 Extension arm 46 Buckle slot 461 Plug power terminal 5 Power docking unit 51 Plug signal terminal 6 Signal docking unit 61 [Specific implementation method]

[0035] In order to facilitate a better understanding of the purpose, structure, features and effects of the present invention, the present invention will be further described in conjunction with the accompanying drawings and specific implementation methods.

[0036] For the accuracy of description, please refer to the direction in this article. Figure 1 For reference, the term "X-axis direction" refers to the direction parallel to the plugging direction of the socket electrical connector and the plug electrical connector, that is, the front-to-back direction (where the positive direction of the X-axis is the front). The term "Y-axis direction" refers to the horizontal direction perpendicular to the plugging direction of the socket electrical connector and the plug electrical connector, that is, the left-to-right direction (where the positive direction of the Y-axis is the left). The term "Z-axis direction" refers to the direction perpendicular to the plugging direction of the socket electrical connector and the plug electrical connector, that is, the up-down direction (where the positive direction of the Z-axis is the top). Among them, the X-axis direction, the Y-axis direction and the Z-axis direction together constitute the three orthogonal directions of the electrical connector. For the convenience of description, the up and down, left and right, and front and back directions in this utility model are relative positions and do not constitute a limitation to implementation. The X-axis direction, the Y-axis direction and the Z-axis direction of the socket electrical connector and the electrical connector combination can be customized according to the specific structure of the product and the perspective of the drawings, and this utility model does not make specific limitations.

[0037] See also Figure 1 and Figure 6 The socket electrical connector of the present invention includes an insulating body 1 and a plurality of socket power terminals 2 and a plurality of socket signal terminals 3 provided on the insulating body 1; a plug electrical connector includes a plug body 4 and a plurality of plug power terminals 5 and a plurality of plug signal terminals 6 provided on the plug body 4. The socket electrical connector and the plug electrical connector are plugged together in the front-to-back direction to form an electrical connector combination.

[0038] like Figure 1 and Figures 8 to 11As shown, in the front-to-back direction, the front end of the insulating body 1 is recessed backward to form a plurality of power docking slots 11 and a signal docking slot 14, and the plurality of power docking slots 11 are arranged in two rows, the signal docking slot 14 is configured to be long and located at the lower side of the two rows of power docking slots 11 in the upper and lower directions, and the upper side of the signal docking slot 14 has a common wall 13 integrally connected to the power docking slots 11 in the lower row, that is, the insulating body 1 is integrally formed, and there is no need to add the step of assembling the split insulating body 1, which saves time and process, and saves the space occupied by the socket electrical connector, meeting the miniaturization requirements of the socket electrical connector; the lower side of the signal docking slot 14 has a distal wall 142 arranged opposite to the common wall 13, and a connecting rib 141 is provided in the signal docking slot 14 and connects the common wall 13 and the distal wall 142 to enhance the strength of the common wall 13 and the distal wall 142. The connecting rib 141 is connected to the rear wall of the signal docking slot 14, and the length of the connecting rib 141 in the front-to-back direction is less than the depth of the recess in the front-to-back direction of the signal docking slot 14. A partition 112 is provided between each adjacent pair of the power docking slots 11. The partitions 112 between the adjacent pairs of the power docking slots 11 in the lower row are integrally connected to the common wall 13 to further enhance the strength of the common wall 13. The connecting rib 141 is aligned with the partition 112 between the two adjacent power docking slots 11 along the up and down directions. In this embodiment, the connecting rib 141 is located at the center of the signal docking slot 14, and the partition 112 located at the center is aligned with the connecting rib 141 up and down. The connecting rib 141 and the partition 112 are aligned up and down and are integrally connected to the common wall 13, thereby further enhancing the strength of the common wall 13 and the overall strength of the insulating body 1; in other embodiments, the partition 112 between the other two adjacent power docking slots 11 may also be aligned with the connecting rib 141 up and down.Each of the power docking slots 11 is provided with a first anti-foolproofing portion 111. In the present embodiment, each of the first anti-foolproofing portions 111 is formed by protruding from a corner of the corresponding power docking slot 11, and the first anti-foolproofing portions 111 in the lower row of the power docking slots 11 are all integrally connected to the common wall 13 to enhance the strength of the common wall 13. Multiple first anti-foolproofing portions 111 are respectively located on the left and right sides of the center line of the connecting rib 141 along the up and down directions and are symmetrically arranged with respect to the center line, so as to guide the corresponding plug electrical connector to mate with the socket electrical connector in the correct direction; in other embodiments, only one first anti-foolproofing portion 111 may be provided, or the first anti-foolproofing portion 111 may be provided in a part of the power docking slots 11, and not in the other part of the power docking slots 11. The first anti-foolproofing portion 111 may also be provided as a notch or other shape further recessed from one side wall of the power docking slot 11. As long as the anti-foolproofing effect can be achieved, the present invention does not limit the number and specific shape of the first anti-foolproofing portions 111. Each of the power docking slots 11 is further recessed backward to form a power mounting hole 12; further, the rear wall of the insulating body 1 is recessed forward to form a recessed space 16 corresponding to the area where the socket power terminals 2 are provided, so as to prevent the insulating body 1 from shrinking due to uneven wall thickness during the molding process, thereby affecting the appearance of the insulating body 1. The front wall of the recessed space 16 is convexly provided with a plurality of protrusions 17, and the plurality of power mounting holes 12 pass through the plurality of protrusions 17 in a one-to-one correspondence along the front-to-back direction, thereby increasing the creepage distance between two adjacent socket power terminals 2; The lower side of the recessed space 16 has a partition wall 18 integrally connected to a row of signal mounting holes 15. In the left-right direction, a first reinforcing rib 161 is connected between the outer walls of two adjacent protrusions 17 in each row. In the top-bottom direction, a second reinforcing rib 162 is connected between the outer walls of each adjacent protrusion 17 and between the outer walls of each protrusion 17 in a row of protrusions 17 adjacent to the partition wall 18 and the partition wall 18. The first and second reinforcing ribs 161 and 162 reinforce the strength of the protrusions 17. The signal docking slot 14 is further recessed rearward to form a plurality of signal mounting holes 15 extending rearward through the rear wall of the insulating body 1. The plurality of signal mounting holes 15 are arranged in a row in the left-right direction, with the partition wall 18 separating the power mounting hole 12 and the signal mounting holes 15.A snap-on portion 19 is protruding from the top wall of the insulating body 1 for snap-fitting with the plug electrical connector. In the up and down directions, the snap-on portion 19 is located on the side of the insulating body 1 away from the multiple signal docking slots 14; further, the snap-on portion 19 is aligned with the partition 112 and the connecting rib 141 located in the middle up and down to increase the strength of the snap-on portion 19, prevent the snap-on portion 19 from being deformed due to excessive force when being snap-fitted with the plug electrical connector, resulting in poor snap-on effect or even disengagement, and enhance the structural stability of the electrical connector assembly.

[0039] like Figure 1 and Figures 8 to 12As shown, the socket power terminals 2 and the socket signal terminals 3 are used to transmit power and signals, respectively. Multiple socket power terminals 2 are correspondingly mounted in the multiple power mounting holes 12 and inserted into the multiple power docking slots 11, arranged in two rows in the vertical direction. Each socket power terminal 2 in one row has a positive contact portion 21 located in the corresponding power docking slot 11 for transmitting positive current, while each socket power terminal 2 in the other row has a negative contact portion 22 located in the corresponding power docking slot 11 for transmitting negative current. Each socket power terminal 2 also has a power fixing portion 23 fixed in the corresponding power mounting hole 12 and a power welding portion 24 extending rearward from the power mounting hole 12 for welding to a circuit board (not shown). Each power fixing portion 23 is provided with a first interference portion 231 for interfering with and securing the corresponding power mounting hole 12. Furthermore, in the front-to-back direction, the distance between the positive contact portion 21 and the front end surface of the insulating body 1 is greater than the distance between the negative contact portion 22 and the front end surface of the insulating body 1. The plurality of socket signal terminals 3 are respectively fixed in the signal mounting holes 15 and extend to the signal docking slot 14. Each of the socket signal terminals 3 includes a signal fixing portion 32 fixed in the corresponding signal mounting hole 15 and a signal contact portion 31 extending forward to the signal docking slot 14, and a signal welding portion 33 connected to the signal fixing portion 32 and extending backward out of the signal mounting hole 15 to be welded to the circuit board. Each of the signal fixing portions 32 is provided with a second interference portion 321 to interfere and fix with the corresponding signal mounting hole 15. The plurality of socket signal terminals 3 are respectively arranged on the left and right sides of the connecting rib 141 and the number of the socket signal terminals 3 on both sides of the connecting rib 141 is equal, that is, the connecting rib 141 is located at the center of the signal docking slot 14. In the left and right directions, the plurality of socket signal terminals 3 located on one side of the connecting rib 141 are used for signal input, and the plurality of socket signal terminals 3 located on the other side of the connecting rib 141 are used for signal return, so as to facilitate grouping management of the plurality of socket signal terminals 3 and reduce signal interference between the two groups of signal contact portions 31 through the connecting rib 141. In this embodiment, the left and right sides of the connecting rib 141 are respectively provided with a plurality of the socket signal terminals 3. In other embodiments, it can also be set that there is one socket signal terminal 3 on the left and right sides of the connecting rib 141, one of the socket signal terminals 3 is used for signal input, and the other socket signal terminal 3 is used for signal return.Furthermore, a first spacing D1 is defined between the two signal contacts 31 closest to the left and right sides of the connecting rib 141, and a second spacing D2 is defined between two adjacent signal contacts 31 located on the same side of the connecting rib 141. The first spacing D1 is greater than the second spacing D2, thereby improving the heat dissipation capability of the two signal contacts 31 closest to the left and right sides of the connecting rib 141 and reducing electromagnetic interference between the two signal contacts 31. Furthermore, the front end of each signal contact 31 is positioned further rearward than the front end of the connecting rib 141 to prevent the signal contact 31 from being impacted by the signal plug post 43. The connecting rib 141 completely separates the two central signal contacts 31, enhancing the effectiveness of the connecting rib 141 in isolating the two signal contacts 31 from electromagnetic interference and preventing heat from accumulating in the center of the signal docking slot 14. Furthermore, a third spacing D3 is provided between the two signal soldering portions 33 closest to the left and right sides of the connecting rib 141 among the plurality of the socket signal terminals 3, and a fourth spacing D4 is provided between the two signal soldering portions 33 located on the same side of the connecting rib 141 and adjacent to each other. The third spacing D3 and the fourth spacing D4 are equal, so that the plurality of the socket signal terminals 3 can share one circuit board without the need to add a specific circuit board. The third spacing D3 and the fourth spacing D4 are both smaller than the first spacing D1. In this embodiment, each of the signal terminals 3 The width of the fixing portion 32 in the left-right direction is greater than the width of the signal contact portion 31 and the signal welding portion 33. A cut-off portion 322 is provided at the rear end of each signal fixing portion 32 on one side of the signal welding portion 33. In the left-right direction, the signal welding portion 33 of each socket signal terminal 3 is closer to the center line of the connecting rib 141 extending in the front-to-back direction than the cut-off portion 322. By reducing the overall width of a row of the signal welding portions 33 in the left-right direction, the space occupied by the signal welding portions 33 of a row of the socket signal terminals 3 on the circuit board is saved.

[0040] like Figure 1 、 Figure 2 and Figure 13As shown, the plug body 4 includes a plug base 41 and a plurality of power plug posts 42 and a signal plug post 43 integrally protruding from the plug base 41 to the rear. The top wall of the plug base 41 extends an extension arm 46 in the front-to-back direction. The lower end of the extension arm 46 is recessed upwardly with a snap groove 461 to snap-fit with the snap portion 19. The plurality of power plug posts 42 are spaced apart in pairs and arranged in two rows, and the signal plug post 43 is located on the lower side of the two rows of power plug posts 42 and spaced apart from each of the power plug posts 42. A portion of plastic is removed from the outer corner of each power plug post 42 to form a second anti-fool portion 421 with a missing corner to engage with the second anti-fool portion 421. Multiple first anti-foolproofing parts 111 correspond one-to-one to realize the anti-foolproofing function of the power plug column 42; in other embodiments, each second anti-foolproofing part 421 can also be set only one, or a part of the power plug column 42 can be provided with the second anti-foolproofing part 421, and the other part of the power plug column 42 is not provided with the second anti-foolproofing part 421. The second anti-foolproofing part 421 can also be set to a rib or other shape protruding from the outer wall surface of the power plug column 42. As long as it can correspond to the first anti-foolproofing part 111 to achieve the anti-foolproofing effect, the utility model does not limit the number and specific shape of the first anti-foolproofing part 111 and the second anti-foolproofing part 421.A plurality of power terminal holes 44 are provided along the front-to-back direction through the plug base 41, one-to-one correspondingly passing through the two rows of power plug posts 42. The plurality of power terminal holes 44 are also arranged in two rows, one above the other. The plurality of plug power terminals 5 are accommodated in the two rows of power terminal holes 44, one above the other, to be arranged in two rows, each of the plug power terminals 5 having a power docking portion 51. The two rows of power docking portions 51 are used to respectively connect with a row of the positive contact portions 21 and a row of the negative contact portions 22. In this embodiment, the two rows of plug power terminals The power docking portion 51 of the sub 5 is coplanar in the front-to-back direction; a plurality of signal terminal holes 45 are provided from the plug base 41 in the front-to-back direction and all of them pass through the signal plug post 43 forward, and the signal plug post 43 is provided with a recessed area 431 at one end away from the plug base 41 in the front-to-back direction. In the front-to-back direction, the recessed depth of the recessed area 431 is less than the protruding length of the signal plug post 43 relative to the plug base 41, that is, the parts of the signal plug post 43 on the left and right sides of the recessed area 431 are not completely isolated, so as to avoid the The portions of the signal plug post 43 located on both sides of the recessed area 431 are completely isolated and thus have weakened strength; the recessed area 431 is located between two adjacent signal terminal holes 45 along the left-right direction, and the number of the signal terminal holes 45 on both sides of the recessed area 431 is equal, so as to electrically connect the two groups of the socket signal terminals 3 on the left and right sides of the connecting rib 141 to input and return signals respectively. In this embodiment, the left and right sides of the recessed area 431 are respectively provided with a plurality of the signal terminal holes 45. In other embodiments, it can also be provided that the left and right sides of the recessed area 431 are respectively provided with one signal terminal hole 45; further, the spacing between the two signal terminal holes 45 closest to the left and right sides of the recessed area 431 is greater than the spacing between the two signal terminal holes 45 located on the same side of the recessed area 431 and adjacent to each other; the plurality of plug signal terminals 6 are respectively accommodated in the plurality of signal terminal holes 45 in a one-to-one correspondence, and each of the plug signal terminals 6 has a signal docking portion 61 for contacting the signal contact portion 31 of the corresponding socket signal terminal 3.

[0041] like Figures 1 to 7 As shown, when the socket electrical connector and the plug electrical connector are plugged in and matched along the front-to-back direction, the plurality of first fool-proofing portions 111 and the plurality of second fool-proofing portions 421 cooperate with each other in a one-to-one manner to guide the plurality of power plug posts 42 to be inserted into the plurality of power docking slots 11 in a one-to-one manner in the correct direction, so that the plurality of plug power terminals 5 are electrically connected to the plurality of socket power terminals 2 in a one-to-one manner. Figures 3 to 5As shown, since the negative contact portion 22 is located further forward than the positive contact portion 21 in the front-to-back direction, and the power mating portions 51 of the two rows of plug power terminals 5 are coplanar in the front-to-back direction, the negative contact portion 22 first contacts the power mating portions 51 of the corresponding row of plug power terminals 5 to provide grounding protection for the electrical connector assembly, thereby preventing sparks from being generated due to large current when the positive contact portion 21 contacts the power mating portions 51 of the corresponding plug power terminals 5. When the negative contact portion 22 just contacts the power mating portions 51 of the corresponding row, the distance between the positive contact portion 21 and the power mating portions 51 is smaller than the distance between the signal contact portion 31 and the signal mating portion 61 in the front-to-back direction. Therefore, after the positive contact portion 21 contacts the power mating portions 51 of the corresponding row to energize the electrical connector assembly, the signal contact portion 31 contacts the signal mating portions 61 to transmit signals. Furthermore, when the negative electrode contact portion 22 just contacts the corresponding power docking portion 51, in the front-to-back direction, the distance between each signal contact portion 31 and the corresponding signal docking portion 61 is smaller than the distance between the snap portion 19 and the snap groove 461. Therefore, after the signal contact portion 31 contacts the corresponding signal docking portion 61, the snap portion 19 and the snap groove 461 are finally engaged with each other to prevent the socket electrical connector and the plug electrical connector from being separated from each other, thereby ensuring the structural stability and electrical connection stability of the electrical connector assembly. By first making the negative electrode contact portion 22 contact the corresponding power docking portion 51, then the positive electrode contact portion 21 contacts the corresponding power docking portion 51, and then further making the signal contact portion 31 contact the corresponding signal docking portion 61. In this way, the snap-on portion 19 and the snap-on groove 461 are snap-fitted to form four sequential timings. On the one hand, the negative contact portion 22 is first contacted with the corresponding power docking portion 51 to perform grounding protection on the electrical connector combination to prevent sparks and improve the safety and service life of the electrical connector combination. Finally, the structural stability and electrical connection stability of the socket electrical connector and the plug electrical connector are ensured by the snap-fit fixation between the snap-on portion 19 and the snap-on groove 461. On the other hand, the insertion force of multiple groups of terminals when plugging in reaches the maximum in different timings in turn, reducing the temporary maximum value of the total insertion force of the electrical connector combination to ensure the structural stability of the electrical connector combination. The snap-on portion 19 and the snap-on groove 461 are finally snap-fitted to ensure the contact effect between multiple groups of terminals.Since the extension length of the connecting rib 141 in the front-to-back direction is less than the recessed depth of the signal docking slot 14, the inner wall surfaces on the left and right sides of the signal docking slot 14 first guide the signal plug-in column 43 to initially insert into the signal docking slot 14, preventing the signal plug-in column 43 from being inserted crookedly and hitting the connecting rib 141, thereby ensuring the structural stability of the connecting rib 141. The left and right sides of the front end surface of the connecting rib 141 are respectively inclined backward to form a guide surface 1411 to further guide the signal plug-in column 43 to be inserted into the signal docking slot 14 so that the multiple plug signal terminals 6 and the multiple socket signal terminals 3 correspond one to one electrically. The connecting rib 141 enters the recessed area 431, and the concave-convex fit between the recessed area 431 and the connecting rib 141 prevents other types of plug electrical connectors from being mis-inserted into the socket electrical connector. As a result, the spacing of the plug signal terminals 6 and the spacing of the socket signal terminals 3 do not correspond to each other, causing the signal plug posts 43 to hit the socket signal terminals 3, causing the socket signal terminals 3 to be crooked or even broken, thereby ensuring that the socket signal terminals 3 can be accurately and stably electrically connected to the plug signal terminals 6, thereby improving the electrical connection stability of the electrical connector combination.

[0042] In summary, the socket electrical connector and the electrical connector assembly of the present invention have the following beneficial effects:

[0043] (1) The power docking slot 11 is provided with the first anti-mistake portion 111 to correspond to the second anti-mistake portion 421 of the power plug post 42 to prevent the power plug post 42 from being plugged into the power docking slot 11 in the wrong direction; the connecting rib 141 is provided in the signal docking slot 14 and connects the common wall 13 and the distal wall 142, thereby enhancing the strength of the common wall 13 and the distal wall 142; the partition 112 is connected to the common wall 13 and aligned with the connecting rib 141 up and down, thereby further enhancing the overall strength of the common wall 13 and the insulating body 1; and the connecting rib 141 is provided in the signal docking slot 14 to identify whether the plug electrical connector is adapted, thereby achieving an anti-misplugging effect, thereby preventing other different types of plug electrical connectors from being inserted into and colliding with the socket signal terminal 3, thereby ensuring that the socket signal terminal 3 and the plug signal terminal 6 can be accurately and firmly plugged in one by one, thereby improving the electrical connection stability of the electrical connector combination.

[0044] (2) There is a first spacing D1 between the two signal contact portions 31 closest to the left and right sides of the connecting rib 141, and a second spacing D2 between the two signal contact portions 31 located on the same side of the connecting rib 141 and adjacent to each other, wherein the first spacing D1 is greater than the second spacing D2, so as to improve the heat dissipation capacity of the two signal contact portions 31 closest to the left and right sides of the connecting rib 141 and reduce the electromagnetic interference between the two signal contact portions 31; there is a second spacing D2 between the two signal soldering portions 33 closest to the left and right sides of the connecting rib 141 among the plurality of socket signal terminals 3. A third spacing D3 is provided, and a fourth spacing D4 is provided between two adjacent signal welding portions 33 located on the same side of the connecting rib 141. The third spacing D3 and the fourth spacing D4 are equal, so that a plurality of the socket signal terminals 3 can share one circuit board without the need to provide an additional specific circuit board. The third spacing D3 and the fourth spacing D4 are both smaller than the first spacing D1. By reducing the overall width of a row of the signal welding portions 33 in the left-right direction, the space occupied by the signal welding portions 33 of a row of the socket signal terminals 3 on the circuit board is saved.

[0045] (3) The connecting rib 141 is connected to the rear wall of the signal docking slot 14. The extending length of the connecting rib 141 in the front-to-back direction is less than the recessed depth of the signal docking slot 14 in the front-to-back direction. The inner walls on the left and right sides of the signal docking slot 14 first guide the signal plug-in column 43 to initially insert into the signal docking slot 14, preventing the signal plug-in column 43 from being inserted crookedly and hitting the connecting rib 141, thereby ensuring the structural stability of the connecting rib 141. The signal plug-in column 43 is then further guided to insert into the signal docking slot 14 by the connecting rib 141. The front end surface of the connecting rib 141 is closer to the front end surface of each signal contact portion 31, thereby preventing the signal contact portion 31 from being hit by the signal plug-in column 43. The two central signal contact portions 31 are completely separated by the connecting rib 141, thereby enhancing the effect of the connecting rib 141 in separating the electromagnetic interference between the two signal contact portions 31 and preventing heat from gathering in the middle of the signal docking slot 14.

[0046] (4) The number of the socket signal terminals 3 on the left and right sides of the connecting rib 141 is equal. The socket signal terminals 3 located on one side of the connecting rib 141 in the left-right direction are used for signal input, and the socket signal terminals 3 located on the other side of the connecting rib 141 in the left-right direction are used for signal return, so as to facilitate grouping management of multiple socket signal terminals 3 and reduce interference between signals.

[0047] (5) The rear wall of the insulating body 1 is recessed forward to form a recessed space 16 to prevent the insulating body 1 from shrinking due to uneven wall thickness during the molding process, thereby affecting the appearance of the insulating body 1. The front wall of the recessed space 16 is protruding backward with a plurality of bosses 17. The plurality of power mounting holes 12 pass through the plurality of bosses 17 in a one-to-one correspondence along the front-to-back direction, thereby increasing the creepage distance between two adjacent socket power terminals 2. In the left-right direction, a first reinforcing rib 161 is connected between the outer wall surfaces of two adjacent bosses 17 in each row of the bosses 17. In the up-down direction, a second reinforcing rib 162 is connected between the outer wall surfaces of each two adjacent bosses 17 and between the outer wall surface of each boss 17 in a row of the bosses 17 close to the partition wall 18 and the partition wall 18. The strength of the boss 17 is enhanced by the first reinforcing rib 161 and the second reinforcing rib 162.

[0048] (6) A snap-on portion 19 is protruded from the top wall of the insulating body 1 to be snap-fitted with the plug electrical connector. In the up-down direction, the snap-on portion 19 is located on the side of the two rows of power docking slots 11 away from the plurality of signal docking slots 14. Furthermore, the snap-on portion 19 is aligned with the central partition 112 and the connecting rib 141 up-down to increase the strength of the snap-on portion 19, to prevent the snap-on portion 19 from being deformed due to excessive force when being snap-fitted with the plug electrical connector, resulting in poor snapping effect or even disengagement, and to enhance the structural stability of the electrical connector assembly.

[0049] (7) The common wall 13 integrally connects the signal docking slot 14 and the power docking slot 11 in the lower row, thereby enhancing the overall strength of the insulating body 1 and eliminating the need for additional steps to assemble the split insulating body 1, saving time and process, and saving the space occupied by the socket electrical connector, thereby meeting the miniaturization requirements of the socket electrical connector.

[0050] (8) By making the negative contact portion 22 first contact the corresponding power docking portion 51, then the positive contact portion 21 contact the corresponding power docking portion 51, and then further making the signal contact portion 31 contact the corresponding signal docking portion 61, and finally making the snap portion 19 snap into the snap groove 461, four time sequences are formed in sequence. On the one hand, the negative contact portion 22 is first contacted with the corresponding power docking portion 51 to ground the electrical connector assembly, prevent sparks, and improve the safety and service life of the electrical connector assembly. Finally, the snap connection between the snap portion 19 and the snap groove 461 ensures the structural stability and electrical connection stability of the socket electrical connector and the plug electrical connector. On the other hand, the insertion force of multiple sets of terminals when plugging in reaches the maximum in different time sequences, thereby reducing the temporary maximum value of the total insertion force of the electrical connector assembly and ensuring the structural stability of the electrical connector assembly. The snap portion 19 is finally snapped into the snap groove 461 to ensure the contact effect between the multiple sets of terminals.

[0051] The above detailed description is only an illustration of the preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the description and illustrations of this invention are included in the patent scope of this invention.

Claims

1. A socket electrical connector, characterized in that: include: An insulating body, wherein the front end of the insulating body is recessed backward to form a plurality of power docking slots and a signal docking slot, at least one of the power docking slots is provided with a first anti-fouling portion, each of the power docking slots is further recessed backward to form a power mounting hole, and the signal docking slot is further recessed backward to form at least two signal mounting holes, the plurality of power docking slots are arranged in at least one row along the left-right direction, a partition is provided between each two adjacent power docking slots in a row, the signal docking slot has a common wall on one side along the up-down direction integrally connecting the power docking slots in a row, the signal docking slot has a distal wall on the other side, a connecting rib is provided in the signal docking slot and connects the common wall and the distal wall, and the connecting rib is aligned with the partition between the two adjacent power docking slots along the up-down direction; A plurality of socket power terminals are fixed to the plurality of power installation holes in a one-to-one correspondence and extend to the respective corresponding power docking slots; At least two socket signal terminals are fixed in one-to-one correspondence to the signal mounting holes and extend to the same signal docking slot. Each socket signal terminal includes a signal contact portion located in the signal docking slot and a signal welding portion extending out of the insulating body. At least two of the signal contact portions are respectively located on the left and right sides of the connecting rib.

2. The electrical receptacle connector according to claim 1, wherein: A plurality of socket signal terminals are respectively provided on the left and right sides of the connecting rib, a first spacing is provided between the two signal contact portions closest to the left and right sides of the connecting rib, and a second spacing is provided between the two signal contact portions located on the same side of the connecting rib and adjacent to each other, and the first spacing is greater than the second spacing.

3. The electrical receptacle connector according to claim 2, wherein: There is a third spacing between the two signal welding portions closest to the left and right sides of the connecting rib among the multiple socket signal terminals, and a fourth spacing between the two signal welding portions located on the same side of the connecting rib and adjacent to each other. The third spacing is equal to the fourth spacing, and both the third spacing and the fourth spacing are smaller than the first spacing.

4. The electrical receptacle connector according to claim 1, wherein: Each of the socket signal terminals has a signal fixing portion that connects the signal contact portion and the signal welding portion and is fixed to the corresponding signal mounting hole. The width of each of the signal fixing portions in the left-right direction is greater than the width of the signal contact portion and the signal welding portion. A cut-off portion is provided at the rear end of each of the signal fixing portions on one side of the signal welding portion. In the left-right direction, the signal welding portion of each of the socket signal terminals is closer to the center line of the connecting rib extending in the front-to-back direction than the cut-off portion.

5. The electrical receptacle connector according to claim 1, wherein: The connecting rib is connected to the rear wall surface of the signal docking groove, the extending length of the connecting rib in the front-to-back direction is smaller than the recessed depth of the signal docking groove in the front-to-back direction, and the front end surface of the connecting rib is closer to the front than the front end surface of each signal contact portion.

6. The electrical receptacle connector according to claim 1, wherein: The first anti-foolproofing portion is formed by an oblique protrusion from a corner of each of the power docking slots. The first anti-foolproofing portions in a row of the power docking slots connected to the common wall are all connected to the common wall. The connecting rib is located in the center of the signal docking slot. Multiple first anti-foolproofing portions are respectively located on the left and right sides of the center line of the connecting rib along the up and down direction and are symmetrically arranged with respect to the center line.

7. The electrical receptacle connector according to claim 1, wherein: The number of the socket signal terminals on the left and right sides of the connecting rib is equal. The socket signal terminals on one side of the connecting rib in the left-right direction are used for signal input, and the socket signal terminals on the other side of the connecting rib in the left-right direction are used for signal return.

8. The electrical receptacle connector according to claim 1, wherein: The rear wall of the insulating body is recessed forward to form a recessed space in an area corresponding to the socket power terminal. A plurality of bosses are protruded rearward on the front wall of the recessed space. The plurality of power mounting holes pass through the plurality of bosses in a one-to-one correspondence along the front-to-back direction. The recessed space has a partition wall on one side along the up-down direction integrally connecting the plurality of signal mounting holes to separate the signal mounting holes and the power mounting holes. A first reinforcing rib is connected between the outer wall surfaces of every two adjacent bosses in the left-right direction, and a second reinforcing rib is connected between the outer wall surfaces of every two adjacent bosses in the up-down direction and between the outer wall surface of each boss in a row of bosses close to the partition wall and the partition wall.

9. The electrical receptacle connector according to claim 1, wherein: The insulating body is provided with a buckle portion on one side along the up-down direction. In the up-down direction, the buckle portion is located on the side of the insulating body away from the signal docking slot. The buckle portion is aligned with the partition and the connecting rib in the middle.

10. A socket electrical connector, characterized in that: include: An insulating body, wherein the front end of the insulating body is recessed backward to form a plurality of power docking slots and a signal docking slot, at least one of the power docking slots is provided with a first anti-fouling portion, each of the power docking slots is further recessed backward to form a power mounting hole, and the signal docking slot is further recessed backward to form at least two signal mounting holes, the plurality of power docking slots are arranged in at least one row along the left-right direction, a partition is provided between each adjacent two power docking slots in a row, the signal docking slot has a common wall on one side along the up-down direction integrally connecting the power docking slots in a row, the other side of the signal docking slot has a distal wall, a connecting rib is provided in the signal docking slot and connects the common wall and the distal wall; A plurality of socket power terminals are fixed to the plurality of power installation holes in a one-to-one correspondence and extend to the respective corresponding power docking slots; At least two socket signal terminals are fixed in a one-to-one correspondence to the signal mounting holes and extend to the same signal docking slot. Each socket signal terminal includes a signal contact portion located in the signal docking slot and a signal welding portion extending out of the insulating body. The connecting rib separates the multiple signal contact portions in the left-right direction. In the left-right direction, the socket signal terminal located on one side of the connecting rib is used for signal input, and the socket signal terminal located on the other side of the connecting rib is used for signal return.

11. The electrical receptacle connector according to claim 10, wherein: The number of the socket signal terminals in a portion located on the left side of the connecting rib is equal to the number of the socket signal terminals in another portion located on the right side of the connecting rib, a first spacing is provided between the two signal contact portions closest to the left and right sides of the connecting rib, and a second spacing is provided between the two signal contact portions located on the same side of the connecting rib and adjacent to each other in the left-right direction, and the first spacing is greater than the second spacing.

12. An electrical connector assembly comprising a receptacle electrical connector and a plug electrical connector mated with the receptacle electrical connector, characterized in that: The socket electrical connector includes an insulating body, the front end of the insulating body is recessed backward to form a plurality of power docking slots and a signal docking slot, at least one of the power docking slots is provided with a first anti-fouling portion, each of the power docking slots is further recessed backward to form a power mounting hole, and the signal docking slot is further recessed backward to form at least two signal mounting holes, and the plurality of power docking slots are arranged in at least one row along the left and right directions, and a partition is provided between each adjacent two power docking slots in a row, and the signal docking slot has a common wall on one side along the up and down directions to integrally connect a row of the power docking slots, and the other side of the signal docking slot is provided with a common wall to integrally connect a row of the power docking slots. The insulating body has a distal wall on one side, a connecting rib is provided in the signal docking slot and connects the common wall and the distal wall, a plurality of socket power terminals are fixed in a one-to-one correspondence to the plurality of power mounting holes and extend to the respective corresponding power docking slots, at least two socket signal terminals are fixed in a one-to-one correspondence to the signal mounting holes and extend to the same signal docking slot, each of the socket signal terminals includes a signal contact portion located in the signal docking slot and a signal welding portion extending outside the insulating body, and the connecting rib separates the at least two signal contact portions located in the signal docking slot in the left-right direction; The plug electrical connector includes a plug body, the plug body including a plug base and at least one row of power plug posts integrally protruding from the plug base along the front-to-back direction and a signal plug post located on one side of the row of power plug posts in the up-down direction; a plurality of power terminal holes are provided through the plug base along the front-to-back direction, one corresponding to each row of power plug posts; at least two signal terminal holes are provided through the plug base along the front-to-back direction, both of which pass through the signal plug posts; a plurality of plug power terminals are correspondingly accommodated in the plurality of power terminal holes; at least two plug signal terminals are respectively correspondingly accommodated in at least two of the signal terminal holes; a recessed area is provided at one end of the signal plug post away from the plug base along the front-to-back direction, the recessed area is located between two adjacent signal terminal holes along the left-right direction; at least one of the power plug posts is provided with a second anti-mistake portion; When the plug electrical connector is docked with the socket electrical connector in the front-to-back direction, the second anti-mock portion cooperates with the first anti-mock portion to prevent mock-up, and a row of the power plug posts are inserted into a row of the power docking slots one by one so that each of the plug power terminals is electrically connected to each of the socket power terminals one by one, and the signal plug posts are inserted into the signal docking slots and the connecting ribs enter the recessed areas, so that each of the plug signal terminals is electrically connected to each of the socket signal terminals one by one.

13. The electrical connector assembly according to claim 12, wherein: In the front-to-back direction, the recessed depth of the recessed area is smaller than the protruding length of the signal plug post from the plug base, and the signal plug post is provided with a plurality of signal terminal holes on the left and right sides of the recessed area, respectively. The plurality of plug signal terminals are respectively accommodated in the plurality of signal terminal holes in a one-to-one correspondence, and the distance between the two signal terminal holes closest to the left and right sides of the recessed area is greater than the distance between the two signal terminal holes located on the same side of the recessed area and adjacent to each other.

14. The electrical connector assembly according to claim 12, wherein: A plurality of the socket power terminals are correspondingly mounted on the plurality of the power mounting holes and enter the plurality of the power docking slots to be arranged in two rows in the upper and lower directions, wherein each of the socket power terminals in one row has a positive contact portion located in the corresponding power docking slot for transmitting positive current, and each of the socket power terminals in the other row has a negative contact portion located in the corresponding power docking slot for transmitting negative current. In the front-to-back direction, the distance between the positive contact portion and the front end surface of the insulating body is greater than the distance between the negative contact portion and the front end surface of the insulating body. A plurality of the plug power terminals are correspondingly accommodated. The two rows of power terminal holes are arranged in two rows, one above the other. Each of the plug power terminals has a power docking portion, and the two rows of power docking portions are used to respectively connect with a row of positive contact portions and a row of negative contact portions. Each of the plug signal terminals has a signal docking portion used to contact the signal contact portion of the corresponding socket signal terminal. When the negative contact portions in one row just contact the power docking portions in the corresponding row, in the front-to-back direction, the distance between the positive contact portions in the other row and the corresponding power docking portions in the other row is smaller than the distance between the signal contact portions and the corresponding signal docking portions.

15. The electrical connector assembly according to claim 14, wherein: A snap-fit portion is convexly provided on one side of the insulating body along the up-down direction, an extension arm extending along the front-to-back direction is provided on one side of the plug body along the up-down direction, and a snap-fit groove is recessed at one end of the extension arm along the up-down direction. A row of the negative electrode contact portions first contacts with a corresponding row of the power docking portions, then a row of the positive electrode contact portions contacts with another corresponding row of the power docking portions, and then a row of the signal contact portions further contacts with a corresponding row of the signal docking portions, and finally the snap-fit portion and the snap-fit groove are snapped and fixed.

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