阅读说明：本技术 一种稳定的大电流板对板连接器 (Stable large-current plate-to-plate connector ) 是由 雷礼庆 姚泽林 孙浩亮 于 2021-08-13 设计创作，主要内容包括：本发明提出了一种稳定的大电流板对板连接器,包括相适配的公头和母座,所述公头包括公头塑胶外壳以及公头电源端子,所述母座包括母座塑胶体和母座电源端子,所述公头塑胶外壳的内壁设置有用于包紧所述母座塑胶体的抵紧台阶,避免了公头与母座的脱离,保证了连接的稳定性；所述母座塑胶体的母座电源槽内设置有用于抵紧母座电源端子的抵紧结构,使母座电源端子稳定的设置在母座电源槽内；此外,还可以将公头塑胶外壳和母座塑胶体设置为两端宽、中间窄的结构,并同时设置信号端子,不仅能够实现同时传输大电流和信号,且体积紧凑,占用空间小。(The invention provides a stable large-current board-to-board connector, which comprises a male head and a female seat which are matched with each other, wherein the male head comprises a male head plastic shell and a male head power supply terminal; a butting structure for butting against the power terminal of the female socket is arranged in the female socket power groove of the female socket plastic body, so that the power terminal of the female socket is stably arranged in the female socket power groove; in addition, can also set up public first plastic casing and female seat plastic body into the structure that both ends are wide, the centre is narrow to set up signal terminal simultaneously, not only can realize transmitting heavy current and signal simultaneously, and compact, occupation space is little.)

1. A stable large-current board-to-board connector comprises a male head and a female seat which are matched, wherein the female seat comprises a female seat plastic body and a plurality of female seat power supply terminals; the bottom of the male plastic shell is provided with a plurality of male power grooves, and the male power terminals are arranged in the male power grooves; the bottom of the inner wall of the female socket power supply groove is provided with a plurality of abutting structures for abutting the female socket power supply terminal in the female socket power supply groove; a propping step is arranged below the inner wall of the male plastic shell and used for clamping the female plastic body in the male plastic shell; the male plastic shell comprises a male bottom, two first male side walls and two second male side walls, wherein the two first male side walls extend along the length direction and the two second male side walls extend along the width direction and are arranged around the edge of the upper surface of the male bottom; the abutting step is arranged on at least one first male side wall.

2. A stable large-current board-to-board connector according to claim 1, wherein said female socket power supply slot includes a soldering slot section and a spring arm slot section arranged along a height direction, said female socket power supply terminal includes a female socket soldering portion and a female socket spring arm portion, said female socket soldering portion is disposed in said soldering slot section, and said female socket spring arm portion is disposed in said spring arm slot section; the abutting structure is arranged on the inner wall of the welding groove section in a protruding mode and interferes with the welding portion of the female seat in an interference mode.

3. A stable large-current board-to-board connector according to claim 2, wherein said abutting structure is a strip-shaped protrusion extending in a height direction; or the abutting structure is a convex point or a convex block convexly arranged at the bottom of the inner wall of the welding groove section; or the abutting mechanism is an array of a plurality of salient points or bumps which are convexly arranged at the bottom of the inner wall of the welding groove section, and the array is arranged along the height direction or arranged along the width direction.

4. A stable high-current board-to-board connector according to claim 1, wherein said abutting step divides said first male side wall into a first side wall subsection and a second side wall subsection arranged above and below; the distance between two of the first sidewall subsections is greater than the distance between two of the second sidewall subsections.

5. A stable high-current board-to-board connector according to claim 1, wherein said abutting step is provided on said first male sidewall along a length direction thereof; the heights of all the sections of the abutting steps are the same or different.

6. A stable high-current board-to-board connector according to claim 1, wherein a male signal terminal is further disposed in the male plastic housing, and a female signal terminal is further disposed in the female plastic housing; the male power supply terminal and the female power supply terminal extend along the width direction and are arranged along the length direction; the female socket signal terminals and the male header signal terminals are arranged along the length direction; the abutting step is arranged on the first male head side wall corresponding to the male head signal terminal.

7. The stable high-current board-to-board connector of claim 6, wherein the male plastic housing comprises a male middle section and two male end sections, the width of the male middle section is smaller than the width of the male end sections, the male signal terminals are disposed in the male middle section, and the male power terminals are disposed in the male end sections; the abutting step is arranged on the inner wall of the middle section of the male head;

the female seat plastic body comprises a female seat middle section and two female seat end sections, the width of the female seat middle section is smaller than that of the female seat end sections, the female seat signal terminal is arranged in the female seat middle section, and the female seat power supply terminal is arranged in the female seat end sections;

the outer surface of public first middle section with the surface of female seat middle section has seted up and has cut the groove of stepping down.

8. The stable large-current board-to-board connector according to claim 1, further comprising a blind-mating structure and a guiding structure, wherein the blind-mating structure comprises blind-mating protrusions with chamfers, which are disposed at two ends of the upper surface of the female housing plastic body, and blind-mating grooves with chamfers, which are correspondingly disposed at the bottom of the male housing plastic body; the guide structure comprises a guide chamfer arranged on the inner side of the opening part of the male plastic shell; and the wall thickness of the first male head side wall of the male head plastic shell corresponding to the blind insertion groove is greater than that of the rest part of the first male head side wall.

9. The stable large-current board-to-board connector according to claim 8, further comprising a fool-proof structure, wherein the fool-proof structure comprises a fool-proof protrusion protruding on an inner wall of one of the first male side walls and a fool-proof groove correspondingly formed on the female housing plastic body.

10. The stable large-current board-to-board connector as claimed in claim 1, wherein a plurality of creepage grooves are formed on the lower surface of the bottom of the male connector, and the creepage grooves are parallel to the male connector power supply grooves and are arranged between the two male connector power supply grooves;

the two ends of the male plastic shell are also provided with male lock catches for welding and fixing the male on the male PCB; the two ends of the female seat plastic body are also provided with female seat lock catches for welding and fixing the female seat on the female seat PCB; the female lock catch comprises a female lock catch body and a female lock catch elastic arm, a female lock catch groove is formed in the female plastic body, a lock catch step is arranged on the inner wall of the groove formed by the female lock catch, and the female lock catch elastic arm abuts against the lock catch step; a forming abdicating groove is formed on the upper surface of the female seat plastic body and penetrates to the upper part of the lock catch step;

the bending parts of the male lock catch and the female lock catch are provided with welding reinforcing windows.

Technical Field

The invention relates to the field of connectors, in particular to a stable large-current board-to-board connector.

Background

The board-to-board connector is a connector product with the strongest transmission capability in all connector product types at present, and is mainly applied to industries such as power systems, communication networks, financial manufacturing, elevators, industrial automation, medical equipment, office equipment, household appliances, military manufacturing and the like. The board is to board connector including pegging graft complex public head and female seat, wherein, public head with female seat includes the plastic body respectively and locates the metal terminal on the plastic body, and the metal terminal configuration of female seat is internal at its plastic, and one end welding is on the PCB of female seat, and the other end and the metal terminal electrical contact of public head to the realization switches on.

In order to guarantee male head and female seat to inserting complex stability, current connector sets up the buckle usually on the plastic body or designs through the structure to the metal terminal and realize, and the setting up of multiple buckle has not only increased the shaping degree of difficulty of the plastic body, and it also does not benefit to male head and female seat to inserting. The stability of connection is guaranteed through the design to the structure of metal terminal, generally forms the hasp through public first metal terminal and female seat metal terminal, causes the damage of metal terminal very easily, is not suitable for used repeatedly's application.

Disclosure of Invention

In order to solve the above problems, the present invention provides a stable large-current board-to-board connector.

The main content of the invention comprises:

a stable large-current board-to-board connector comprises a male head and a female base which are matched, wherein the female base comprises a female base plastic body and a plurality of female base power supply terminals; the bottom of the male plastic shell is provided with a plurality of male power grooves, and the male power terminals are arranged in the male power grooves; the bottom of the inner wall of the female socket power supply groove is provided with a plurality of abutting structures for abutting the female socket power supply terminal in the female socket power supply groove; a propping step is arranged below the inner wall of the male plastic shell and used for clamping the female plastic body in the male plastic shell; the male plastic shell comprises a male bottom, two first male side walls and two second male side walls, wherein the two first male side walls extend along the length direction and the two second male side walls extend along the width direction and are arranged around the edge of the upper surface of the male bottom; the abutting step is arranged on at least one first male side wall.

Preferably, the female power supply groove comprises a welding groove section and an elastic arm groove section which are arranged along the height direction, the female power supply terminal comprises a female welding part and a female elastic arm part, the female welding part is arranged in the welding groove section, and the female elastic arm part is arranged in the elastic arm groove section; the abutting structure is arranged on the inner wall of the welding groove section in a protruding mode and interferes with the welding portion of the female seat in an interference mode.

Preferably, the abutting structure is a strip-shaped bulge extending along the height direction; or the abutting structure is a convex point or a convex block convexly arranged at the bottom of the inner wall of the welding groove section; or the abutting mechanism is an array of a plurality of salient points or bumps which are convexly arranged at the bottom of the inner wall of the welding groove section, and the array is arranged along the height direction or arranged along the width direction.

Preferably, the abutting step divides the first male head side wall into a first side wall subsection and a second side wall subsection which are arranged up and down; the distance between two of the first sidewall subsections is greater than the distance between two of the second sidewall subsections.

Preferably, the abutting steps are sectionally arranged on the side wall of the first male head along the length direction; the heights of all the sections of the abutting steps are the same or different.

Preferably, a male signal terminal is further configured in the male plastic housing, and a female signal terminal is further configured in the female plastic housing; the male power supply terminal and the female power supply terminal extend along the width direction and are arranged along the length direction; the female socket signal terminals and the male header signal terminals are arranged along the length direction; the abutting step is arranged on the first male head side wall corresponding to the male head signal terminal.

Preferably, the male plastic housing comprises a male middle section and two male end sections, the width of the male middle section is smaller than that of the male end sections, the male signal terminal is arranged in the male middle section, and the male power terminal is arranged in the male end sections; the abutting step is arranged on the inner wall of the middle section of the male head;

the female seat plastic body comprises a female seat middle section and two female seat end sections, the width of the female seat middle section is smaller than that of the female seat end sections, the female seat signal terminal is arranged in the female seat middle section, and the female seat power supply terminal is arranged in the female seat end sections;

the outer surface of public first middle section with the surface of female seat middle section has seted up and has cut the groove of stepping down.

Preferably, the male joint plastic shell further comprises a blind-insert structure and a guide structure, wherein the blind-insert structure comprises blind-insert protrusions which are arranged at two ends of the upper surface of the female joint plastic body and provided with chamfers, and blind-insert grooves which are correspondingly arranged at the bottom of the male joint plastic shell and provided with chamfers; the guide structure comprises a guide chamfer arranged on the inner side of the opening part of the male plastic shell; and the wall thickness of the first male head side wall of the male head plastic shell corresponding to the blind insertion groove is greater than that of the rest part of the first male head side wall.

Preferably, still including preventing slow-witted structure, prevent slow-witted structure including protruding establish one of them prevent slow-witted arch on the public first lateral wall inner wall and correspond and establish prevent slow-witted cell body on the female seat plastic body.

Preferably, the lower surface of the bottom of the male head is provided with a plurality of creepage grooves, and the creepage grooves are parallel to the male head power supply grooves and are arranged between the two male head power supply grooves;

the two ends of the male plastic shell are also provided with male lock catches for welding and fixing the male on the male PCB; the two ends of the female seat plastic body are also provided with female seat lock catches for welding and fixing the female seat on the female seat PCB; the female lock catch comprises a female lock catch body and a female lock catch elastic arm, a female lock catch groove is formed in the female plastic body, a lock catch step is arranged on the inner wall of the groove formed by the female lock catch, and the female lock catch elastic arm abuts against the lock catch step; a forming abdicating groove is formed on the upper surface of the female seat plastic body and penetrates to the upper part of the lock catch step;

the bending parts of the male lock catch and the female lock catch are provided with welding reinforcing windows.

The invention provides a stable large-current plate-to-plate connector, which has the following beneficial effects:

(1) the power supply terminal of the female socket is stably arranged in the power supply groove of the female socket through the abutting structure;

(2) through the arrangement of the abutting step, the blind insertion structure and the guide structure, when the female seat is inserted into the male head, the female seat can be conveniently inserted and is finally stably matched with the male head, the male head is prevented from being loosened from the female end, and the matching is safer;

(3) the male plastic shell and the female plastic body are arranged to be of structures with wide two ends and narrow middle, so that the large current and the signal can be transmitted simultaneously, the size is compact, and the small space can be realized;

(4) through the design of the male lock catch and the female lock catch, the firm connection of the connector and the PCB is ensured, and the forming difficulty is reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a male connector according to an embodiment of the present invention;

FIG. 2 is a schematic view of an overall structure of the female socket according to an embodiment of the present invention;

FIG. 3 is a schematic top view of a male tip according to one embodiment of the present invention;

FIG. 4 is a schematic bottom view of a male of the present invention in one embodiment;

FIG. 5 is a schematic top view of a female socket according to an embodiment of the present invention;

FIG. 6 is a bottom view of the female base according to the present invention;

FIG. 7 is a top view of a male of the present invention in another embodiment;

FIG. 8 is a partial cross-sectional view of a male of the present invention in another embodiment;

FIG. 9 is a schematic top view of another embodiment of the female housing of the present invention;

FIG. 10 is a bottom view of another embodiment of the female housing of the present invention;

FIG. 11 is a schematic cross-sectional view of another embodiment of the female housing of the present invention;

FIG. 12 is a schematic structural view of a power terminal of the female socket of the present invention;

reference numerals:

1-male head; 10-male plastic shell; 100-male power supply slot; 101-male bottom; 101-1-male middle section; 101-2-male head end section; 102-a first male sidewall; 102-1-a first sidewall subsection; 102-2-a second sidewall subsection; 103-a second male side wall; 11-male power terminals; 12-male signal terminals; 13-abutting against the step; 140-blind insertion grooves;

141-guiding chamfer angle; 142-fool-proof bumps; 150-creepage grooves; 16-male lock catch; 160-weld reinforcement window;

17-male PCB;

2-a female seat; 20-a mother base plastic body; 200-a female power supply slot; 200-1-welding the groove section; 200-2-spring arm groove section; 201-1-the middle section of the female seat; 201-2-female seat end section; 202-cutting an abdicating groove; 21-female power terminals; 21-1-female seat welding part; 21-2-female base springy arm; 22-female receptacle signal terminals; 23-a holding structure; 240-blind insertion projection; 241-fool-proof groove body; 25-female seat locking; 250-a female lock body; 251-female seat latch elastic arm; 260-female lock catch groove; 261-locking step; 262-forming an abdication groove; 27-female base PCB.

Detailed Description

The technical scheme protected by the invention is specifically explained in the following by combining the attached drawings.

Please refer to fig. 1 to 12. The invention provides a stable large-current board-to-board connector, which comprises a male head 1 and a female seat 2 which are matched with each other, wherein the male head 1 comprises a male head plastic shell 10 and a male head PCB17, the female seat 2 comprises a female seat plastic body 20 and a female seat PCB27, a male head metal terminal is arranged in the male head plastic shell 10, correspondingly, a female seat metal terminal is arranged in the female seat plastic body, and when the male head 1 and the female seat 2 are matched, the male head metal terminal is contacted with the female seat metal terminal, so that a transmission function is realized.

The board-to-board connector disclosed by the invention can realize both small spacing and large current, and the male metal terminal can only comprise a male power terminal 11, correspondingly, the female metal terminal only comprises a female power terminal 21, at the moment, the board-to-board connector can only transmit large current, and can meet the requirement of small spacing; small pitch high current board-to-board connectors as shown in fig. 1-6; in another application scenario, the male metal terminal may include a male power terminal 11 and a male signal terminal 12 at the same time, and correspondingly, the female power terminal includes a female power terminal 21 and a female signal terminal 22 at the same time; that is, the board-to-board connector can simultaneously transmit a large current and a signal, as shown in fig. 7 to 11, which are combined with the large current and signal transmission.

One improvement point of the present invention is to provide the abutting structure 23 and the abutting step 13, so that on one hand, the female power terminal 21 is stably arranged in the female plastic body 20, on the other hand, the female base 2 can conveniently and loosely enter when being inserted into the male head 1, and finally, the female base 2 is stably arranged in the male head 1 by means of the abutting step 13, thereby ensuring the reliability of the matching of the male head 1 and the female base 2.

Referring to fig. 1 to 7, for a board-to-board connector transmitting only a large current at a small distance, the male plastic housing 10 includes a male bottom 101, two first male sidewalls 102 extending along a length direction and two second male sidewalls 103 extending along a width direction, which are disposed around an upper surface edge of the male bottom 101; a plurality of male power grooves 100 are formed in the male bottom 101, the male power grooves 100 are arranged in the length direction, a single male power groove 100 extends in the width direction, the male power terminal 11 is plate-shaped and is arranged in the male power groove 100, one end of the male power terminal is welded to the male PCB17, and the other end of the male power terminal extends into the male plastic shell 10; similarly, a female socket power groove 200 is formed in the female socket plastic body 20, the female socket power terminal 21 is disposed in the female socket power groove 200, as shown in fig. 12, the female socket power terminal 21 includes a female socket welding portion 21-1 and a female socket elastic arm portion 21-2, the female socket welding portion 21-1 is welded on the female socket PCB27, the female socket elastic arm portion 21-2 extends into the female socket power groove 200 from the upper portion of the female socket welding portion 21-1, and when the female socket 2 is inserted into the male socket 1, the male power terminal 11 is inserted into the female socket power groove 200 and makes multi-point contact with the female socket elastic arm portion 21-2.

Specifically, the female socket elastic arm portion 21-2 includes a middle elastic arm located in the middle and side elastic arms symmetrically disposed at two ends of the middle elastic arm, and the middle elastic arm and the two side elastic arms are respectively located at two sides of the female socket welding portion 21-1, and when the male power terminal is inserted, the middle elastic arm and the side elastic arms are respectively in electrical contact with opposite surfaces of the male power terminal; furthermore, the middle part elastic arm has two contact heads, can form two contact points with the public first power supply terminal, also promptly female seat power supply terminal 21 can have 4 contact points with public first power supply terminal 11, and not only contact resistance is lower, and symmetrical design stability is also better.

Referring to fig. 6, fig. 10 and fig. 11, a pressing structure 23 is disposed in the female socket power supply groove 200, and the female socket power supply terminal 21 can be stably disposed in the female socket elastic arm groove 200 through the pressing structure 23, so that the female socket power supply terminal 21 is prevented from shaking, and the stability of the contact between the female socket power supply terminal and the male socket power supply terminal is enhanced. Specifically, the female seat power supply groove 200 comprises a welding groove section 200-1 and an elastic arm groove section 200-2 which are vertically arranged along the height direction, the female seat welding part 21-1 is arranged on the welding groove section 200-1, and the female seat elastic arm part 21-2 is arranged on the elastic arm groove section 200-2; the abutting structure 23 is convexly arranged on the inner wall of the welding groove section 200-1 and interferes with the female seat welding part 21-1 in an interference manner, so that the female seat welding part 21-1 is abutted in the welding groove section 200-1.

Further, the abutting structure 23 is a strip-shaped protrusion extending along the height direction; or the abutting structure 23 is a convex point or a convex block convexly arranged at the bottom of the inner wall of the welding groove section; or the abutting mechanism 23 is an array of a plurality of salient points or bumps convexly arranged at the bottom of the inner wall of the welding groove section 200-1, and the array is arranged along the height direction or arranged along the width direction, so as to form multi-point interference with the female seat welding part 21-1.

As shown in fig. 6 and 10, a tightening structure 23 is disposed on the inner wall of the welding groove section corresponding to the portion of the female seat welding portion connected to the two side elastic arms, and two tightening structures 23 are also disposed on the inner wall of the welding groove section corresponding to the portion of the female seat welding portion connected to the middle elastic arm, and the two tightening structures 23 are close to the tightening structures on the side of the side elastic arms, that is, four tightening structures 23 are disposed in a single welding groove section 200-2, when the female seat power terminal 21 is inserted into the female seat power supply 200, the female seat power terminal is inserted from above the female seat plastic body 20, so that the female seat welding portion 21-1 enters first and is tightened in the welding groove section 200-1 by external force.

Referring to fig. 1 and 8, a tight step 13 is disposed on an inner wall of at least one of the first male side walls 102, and the tight step 13 divides the first male side wall 102 into a first side wall section 102-1 and a second side wall section 102-2 which are disposed up and down, in one case, when the female seat is inserted into the male seat, the tight step 13 applies a pressing force to the female seat plastic body 20 to prevent the female seat from coming out of the male seat; at this time, the abutting step 13 may be a convex line or a convex strip convexly arranged on the inner wall of the first male side wall 102, and the abutting step 13 extends along the length direction, and in addition, the abutting step 13 may also be arranged on the first male side wall 102 in a segmented manner along the length direction; the heights of the sections of the abutting steps 23 are the same or different, that is, the female seat can be abutted in the male plastic shell 10 by means of a plurality of convex ribs.

In another case, the distance between the two first sidewall subsections 102-1 is greater than the distance between the two second sidewall subsections 102-2, that is, the width of the upper half of the male plastic housing 10 is greater than the width of the lower half thereof, and the female plastic body is tightly wrapped in the male plastic housing 10 by means of the second sidewall subsections 102-2.

For the board-to-board connector with large current and signal transmission combination shown in fig. 7 to 11, the abutting step 13 not only enables the female housing plastic body 20 to be tightly wrapped in the male housing plastic 10, but also enables the combination of the male signal terminal 12 and the female signal terminal 22 to be more stable.

Specifically, the male power terminals 11 and the female power terminals 21 extend in the width direction and are arranged in the length direction; the female socket signal terminals 22 and the male header signal terminals 12 are arranged along the length direction; the abutting step 13 is arranged on the first male side wall 102-1 corresponding to the male signal terminal 12.

Further, the male plastic housing 10 includes a male middle section 101-1 and two male end sections 101-2, and the width of the male middle section 101-1 is smaller than the width of the male end section 101-2, and correspondingly, the female plastic body 20 includes a female middle section 20-1 and two female end sections 20-2, the width of the female middle section 20-1 is smaller than the width of the female end sections 20-2, that is, the male plastic housing 10 and the female plastic body 20 are in a dumbbell shape with two wide ends and a narrow middle, the male signal terminal 12 is disposed in the male middle section 101-1, and the male power terminal 11 is disposed in the male end section 101-2; the female socket signal terminal 22 is arranged in the female socket middle section 201-1, and the female socket power supply terminal 21 is arranged in the female socket end section 201-2; the abutting step 13 is arranged on the inner wall of the male head middle section 101-1; in view of the arrangement of the female housing signal terminals 22 and the male header signal terminals 12, when the female housing plastic body 20 is tightly pressed against itself, the female housing signal terminals 22 and the male header signal terminals 12 can be more reliably connected.

Another reason why the male plastic housing 10 and the female plastic body 20 are designed to be dumbbell-shaped is that a cutting abdicating groove 202 needs to be formed on the outer surface of the male middle section 101-1 and the outer surface of the female middle section 201-1, so that sufficient operation space can be provided when the male signal terminal 12 and the female signal terminal 22 are cut, the cutting difficulty is reduced, and the cutting quality is ensured.

In addition, the board-to-board connectors of the two application scenarios of the present invention both further include a blind-mating structure and a guiding structure, so as to achieve more convenient mating, specifically, the blind-mating structure includes blind-mating protrusions 240 with chamfers, which are disposed at two ends of the upper surface of the female housing plastic body 20, and blind-mating grooves 140 with chamfers, which are correspondingly disposed at the bottom of the male housing plastic shell 10, and when the female housing and the male housing are mated, the blind-mating protrusions 240 first enter the male housing plastic shell 10, and finally are mated with the blind-mating grooves 140. The guide structure comprises a guide chamfer 141 arranged on the inner side of the opening part of the male plastic shell 10; further, in view of the requirement of the volumes of the male head and the female seat, the wall thickness of the first male side wall 102 of the male head is not very large, which results in the small guiding chamfer 141, in order to form a larger guiding chamfer 141, the wall thickness of the first male side wall 102 corresponding to the male plastic housing 10 and the blind insertion groove 140 is greater than the wall thickness of the rest part of the first male side wall 102, that is, because the first male side wall 102 corresponding to the blind insertion groove 140 is not provided with a male metal terminal, the wall thickness can be thickened, so that the guiding chamfer 141 is larger, which is more beneficial to the mutual insertion of the female seat and the male head.

In addition, the board-to-board connector of the present invention further comprises a fool-proof structure, wherein the fool-proof structure comprises a fool-proof protrusion 142 convexly disposed on an inner wall of one of the first male-end side walls 102 and a fool-proof groove body 241 correspondingly disposed on the female-seat plastic body 20, and the fool-proof protrusion 142 and the fool-proof groove body 241 are disposed on one side of the connector, so that the upside-down mating can be prevented, and the fool-proof effect is achieved.

Referring to fig. 4, the male power terminal 11 may not be disposed in the male power slot 100 as required, that is, the male power terminal 11 and the female power terminal 21 in the male power slot 100 and the female power slot 200 are selectively eliminated as required to increase the distance between adjacent terminals, thereby achieving a higher voltage withstand requirement. Meanwhile, a plurality of creepage grooves 150 are formed in the lower surface of the male head bottom 101, and the creepage grooves 150 are parallel to the male head power supply grooves 100 and are arranged between the two male head power supply grooves 100; through the arrangement of the creepage groove 150, the creepage distance of the adjacent male power supply terminals 11 on the plastic surface is increased, and the safety of the connector is ensured to a certain extent.

Referring to fig. 1 and 11, male lock catches 16 are further disposed at two ends of the male plastic housing 10 for fixing the male 1 to the male PCB17 by welding; a male lock catch groove is formed in the bottom of the second male side wall 103 of the male plastic housing 10, and the male lock catch 16 is inserted into the male lock catch groove from the upper side of the male plastic housing 10, and then is bent and welded on the male PCB 17. Similarly, the female lock catch 25 is disposed at two ends of the female plastic body 20 for fixing the female base 2 on the female PCB27 by welding; the female lock catch 25 comprises a female lock catch body 250 and a female lock catch elastic arm 251, a lock catch step 261 is arranged on the inner wall of the female lock catch groove 260, and the female lock catch elastic arm 251 abuts against the lock catch step 261; in order to better form the locking step 261, a forming abdicating groove 262 is formed on the upper surface of the female housing plastic body 20, and the forming abdicating groove 262 penetrates above the locking step 261; in order to enhance the welding force between the male lock 16 and the female lock 25 and the PCB thereof, welding enhancing windows 160 are formed at the bent positions of the male lock 16 and the female lock 25.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.