CN114389110A

CN114389110A - Cylinder penetrating connector integrated with large current and small current

Info

Publication number: CN114389110A
Application number: CN202210040792.XA
Authority: CN
Inventors: 张铭; 严迪; 范德祥
Original assignee: Amphenol Changzhou Advanced Connector Co Ltd
Current assignee: Amphenol Changzhou Advanced Connector Co Ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-04-22

Abstract

The invention relates to the technical field of electric connectors, in particular to a cylinder-penetrating connector integrating large and small currents, which comprises a middle base, an outer plug and an inner plug, wherein an outer mounting cavity and an inner mounting cavity are separately arranged in the middle base, two large male terminals and a plurality of small male terminals are fixed in the middle base, two ends of the large male terminals and two ends of the small male terminals respectively extend into the outer mounting cavity and the inner mounting cavity, the outer plug is inserted in the outer mounting cavity, the inner plugs are inserted in the inner mounting cavity, the small male terminals are distributed in a straight line, the connector realizes the combination of a large-current module and a signal module, facilitates the assembly disassembly and replacement by using a three-section design, is simultaneously provided with a terminal secondary lock, realizes the pre-assembly and the supply of components, is simple and rapid in assembly operation when a manufacturer is used for assembly, can realize the secondary locking of the terminals by simple pressing, and realizes the secondary locking of the plug and a handle structure by arranging the plug secondary lock, the misoperation is prevented, the device is suitable for working occasions with strong vibration, and the stability and the reliability of electric connection are greatly improved.

Description

Cylinder penetrating connector integrated with large current and small current

Technical Field

The invention relates to the technical field of electric connectors, in particular to a cylinder penetrating connector integrating large current and small current.

Background

Due to structural limitation, a large-current module and a signal module of a common electric connector are usually arranged separately, so that the installation space of the connector is large, the number of assembling procedures is large, and the use cost is high. When the electric connector is supplied to a using manufacturer from a manufacturer, the female terminal does not need to be inserted sometimes, the female terminal is inserted after the assembling and wiring of the manufacturer, the structure of the secondary terminal lock of the common electric connector is simple, a pre-installation structure cannot be formed, the secondary terminal lock and the electric connector body need to be separately delivered, the assembling and the using of the manufacturer are troublesome, or the secondary terminal lock and the electric connector body are assembled and then disassembled, parts are easily damaged, and the assembling operation is influenced. For the convenience with changing the subassembly, the electric connector can design for dismantled and assembled components of a whole that can function independently structure, but the operation of misplug and unplug probably appears in common buckle connection structure, and hot plugging even damages great to electrical components. In the case of strong vibration, the components of the electrical connector may loosen or deform, resulting in unstable electrical connection.

Disclosure of Invention

In order to overcome the defects of the prior problems, the invention provides a cylinder penetrating connector integrated with large and small currents.

The technical scheme adopted by the invention for solving the technical problems is as follows: the cylinder penetrating connector integrated with large and small currents comprises an intermediate base, an outer plug and an inner plug, wherein an outer mounting cavity and an inner mounting cavity are formed in the intermediate base in a separated mode, two large male terminals and a plurality of small male terminals are fixed to the intermediate base, two ends of each of the large male terminals and the small male terminals respectively extend into the outer mounting cavity and the inner mounting cavity, the outer plug is inserted into the outer mounting cavity, the inner plug is inserted into the inner mounting cavity, the small male terminals are distributed in a straight line mode, and the flat surface direction of the large male terminals is perpendicular to the straight line direction of the small male terminals.

According to another embodiment of the present invention, the outer mounting cavity and the inner mounting cavity further include a glue filling region at a bottom of one of the outer mounting cavity and the inner mounting cavity, and a blocking plate is disposed at a bottom of the other mounting cavity and located between the two large male terminals and between the large male terminal and the small male terminal.

According to another embodiment of the present invention, the outer plug and the inner plug are respectively provided with a terminal shell for inserting female terminals, an inner terminal shell and an outer terminal shell, the terminal shells are respectively provided with a large terminal cavity and a small terminal cavity, the large terminal cavity is internally inserted with a large female terminal, and the small terminal cavity is internally inserted with a small female terminal;

the terminal secondary lock comprises a terminal shell, a terminal secondary lock body and a terminal secondary lock body, wherein the terminal secondary lock body is provided with a large terminal cavity and a small terminal cavity, the terminal secondary lock body is provided with a terminal secondary lock, the terminal secondary lock body is provided with two switchable states including a pre-installation position and a locking position, when the terminal secondary lock body is located at the pre-installation position, the terminal secondary lock body is connected with the terminal shell into a whole, the large terminal cavity and the small terminal cavity can be plugged with and pulled out of a female terminal, and when the terminal secondary lock body is located at the locking position, the terminal secondary lock body is connected with the terminal shell into a whole, and the female terminal cannot be pulled out of the terminal shell.

According to another embodiment of the present invention, a second isolation groove is disposed between the outer walls of the large terminal cavity and the small terminal cavity, a first positioning surface is formed at the bottom of the second isolation groove in an extending manner, a large end locking notch communicated with the large terminal cavity is disposed on the outer wall of the large terminal cavity opposite to the second isolation groove, and a small end locking notch communicated with the small terminal cavity is disposed at the bottom of the second isolation groove;

the secondary terminal lock is of a frame-shaped structure and is provided with a side beam, a front beam and a rear beam, a large-end lock tongue is arranged on the inner side surface of the rear beam in a protruding mode, at least one buckling boss is arranged on the outer wall of each large terminal cavity or each small terminal cavity, and the secondary terminal lock is sleeved on the outer walls of the two large terminal cavities and clamped between the buckling boss and the first positioning surface;

the secondary terminal lock is limited at a preassembly position or a locking position through a buckle structure matched with the terminal shell;

when the secondary lock of the terminal is located at the locking position, the large-end lock tongue extends into the large-end lock opening, the upper end face of the large-end lock tongue abuts against the shoulder face of the large terminal head of the large female terminal, the front beam extends into the small-end lock opening, and the upper end face of the front beam abuts against the shoulder face of the small terminal head of the small female terminal.

According to another embodiment of the invention, a first partition groove communicated with a second partition groove is arranged between the outer walls of the large terminal cavities, the middle parts of the front beam and the rear beam are connected with a middle beam, the middle beam is positioned in the first partition groove, both sides of the middle beam are provided with a preassembly positioning groove and a locking positioning groove, the middle part of the middle beam is provided with an elastic groove in a penetrating manner, the adjacent outer walls of the two large terminal cavities are provided with positioning bosses protruding into the first partition groove, and the positioning bosses are clamped in the preassembly positioning grooves or the locking positioning grooves.

According to another embodiment of the invention, the terminal further comprises a first partition groove communicated with the second partition groove and arranged between the outer walls of the large terminal cavities, the middle parts of the front beam and the rear beam are connected with a middle beam, the middle beam is arranged in the first partition groove, at least one of the two side surfaces of the middle beam is provided with a preassembly positioning groove and a locking positioning groove, the adjacent outer wall of the corresponding large terminal cavity is provided with a positioning boss, and the positioning boss is clamped in the preassembly positioning groove or the locking positioning groove.

According to another embodiment of the present invention, further comprising that the outer plug is further provided with an outer base for mounting the outer terminal housing and connecting the middle base;

an upper mounting cavity for inserting an external terminal shell is arranged in the external base, a plurality of first ribs are arranged on the inner wall of the upper mounting cavity in a protruding mode, a first groove is correspondingly formed in the external terminal shell, the first ribs are inserted into the first groove, and the lower end of each first rib is abutted to the bottom of the corresponding first groove;

a sealing boss is arranged on the periphery of the middle part of the outer terminal shell, the lower end face of the sealing boss is a first positioning face, and an outer sealing ring is sleeved on the upper end face of the sealing boss;

a lower mounting cavity for inserting the side wall of the outer mounting cavity is further arranged in the outer base, a plurality of second grooves are formed in the inner wall of the lower mounting cavity, a plurality of third ribs are correspondingly arranged on the outer wall of the outer mounting cavity, the third ribs are clamped in the second grooves, and the inner wall of the outer mounting cavity is abutted to the outer side face of the outer sealing ring;

a plurality of second ribs are arranged on the inner wall of the outer mounting cavity, a plurality of positioning blocks are arranged on the outer wall of the small terminal cavity of the outer terminal shell opposite to the second partition groove, and the positioning blocks are inserted among the second ribs;

and a avoidance hole for pushing the secondary lock of the terminal is arranged at the corresponding position of the lower mounting cavity.

According to another embodiment of the invention, the outer base is provided with a handle for secondary safety locking of the middle base and the outer plug, and the middle base is correspondingly provided with a locking shaft.

According to another embodiment of the invention, the inner plug is provided with an inner terminal shell for inserting a female terminal, one side of the inner terminal shell is provided with a plug lock cavity, two sides of the interior of the plug lock cavity are provided with locking bosses, two cantilever plates of a cantilever structure are arranged on the outer side of the plug lock cavity, the upper ends of the cantilever plates are both connected with the inner terminal shell body, the lower ends of the cantilever plates are fixedly connected with a second handle, and a plug lock catch is connected between the cantilever plates;

a plug secondary lock is inserted in the plug lock cavity, the plug secondary lock is provided with a frame-shaped base body, an upper positioning groove and a lower positioning groove are formed in two sides of the base body, a fourth boss and a first handle used for withdrawing the plug secondary lock are arranged at the bottom of the base body, the base body is located in the plug lock cavity, and the locking boss is clamped in the upper positioning groove or the lower positioning groove;

the plug lock is characterized in that a plug lock tongue is arranged on the corresponding inner wall of the inner mounting cavity, a guide inclined plane is arranged on the lower end face of the plug lock tongue, when the locking boss is located in the lower positioning groove, the lower end face of the plug lock catch abuts against the upper end face of the plug lock tongue, and the outer side face of a fourth boss of the secondary plug lock abuts against the inner side face of the second handle.

According to another embodiment of the invention, the fourth boss is provided with a mistake-proofing oblique block, the outer side of the mistake-proofing oblique block is provided with a mistake-proofing boss, the lower end surface of the mistake-proofing boss is a transition oblique surface, the upper end surface of the mistake-proofing boss is a plane, when the locking boss is clamped in the upper positioning groove, the upper end surface of the mistake-proofing boss abuts against the lower end surface of the plug lock, and when the locking boss is clamped in the lower positioning groove, the transition oblique surface of the mistake-proofing boss abuts against the upper end surface of the plug lock.

The invention has the advantages that the electric connector realizes the purpose of integrating large current and small current/signals into a single electric connector, is beneficial to realizing the combination of a large current module and a signal module, is convenient for assembly, disassembly and replacement by using a three-section design, is simultaneously provided with the secondary terminal locks, ensures the realization of pre-assembly and the supply of materials according to the assembly, is simple and quick in assembly operation during the assembly of a user factory, can realize the secondary locking of the terminal by simply pressing, prevents misoperation by arranging the secondary plug lock, is firm in locking, is convenient for the connection of the outer plug and the middle base by arranging the handle structure, prevents misoperation, is firm in locking, has compact internal structure, is stable in matching of all components, is suitable for the working occasion of strong vibration, and greatly improves the stability and the reliability of electric connection.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of an exploded structure of the present invention;

FIG. 2 is an exploded view of the intermediate base;

FIG. 3 is an exploded view of the outer plug;

FIG. 4 is an exploded view of the inner plug;

FIG. 5 is a schematic perspective cross-sectional structural view of the present invention;

FIG. 6 is an enlarged view at Y in FIG. 5;

FIG. 7 is a schematic top view of the present invention;

FIG. 8 is a cross-sectional view taken at A-A in FIG. 7 (in the direction of the large male terminal);

FIG. 9 is a cross-sectional view taken at D-D of FIG. 8 (in the secondary locking orientation of the terminal);

FIG. 10 is an enlarged view at X in FIG. 9;

FIG. 11 is a cross-sectional view taken at E-E of FIG. 8;

FIG. 12 is a cross-sectional view taken at B-B in FIG. 7 (in the direction of the small male terminal);

FIG. 13 is a cross-sectional view taken at C-C of FIG. 7;

FIG. 14 is an enlarged view at Z of FIG. 13;

FIG. 15 is a top view of the intermediate base;

FIG. 16 is a bottom view of the intermediate base;

FIG. 17 is a perspective cross-sectional view of the intermediate base;

FIG. 18 is a schematic view of a small male terminal;

FIG. 19 is a schematic view of a large male terminal;

FIG. 20 is a schematic view of the inner plug;

FIG. 21 is a schematic view of the inner plug in another orientation;

FIG. 22 is a perspective cross-sectional view of the inner plug;

FIG. 23 is a left side view of the inner plug;

figure 24 is a bottom view of the inner plug;

FIG. 25 is a cross-sectional view at F-F of FIG. 24;

FIG. 26 is a schematic view of the secondary lock of the terminal;

fig. 27 is a schematic view of an inner terminal housing;

FIG. 28 is a schematic view of a secondary lock of the plug;

FIG. 29 is a perspective sectional view of the outer plug;

fig. 30 is a schematic view of an external terminal housing.

In the figure, an intermediate base 1, an outer plug 2, an inner plug 3, a terminal secondary lock 4, a small female terminal 5, a large female terminal 6 and a terminal shell 7.

Mounting flange 11, mounting hole 111, small male terminal 12, second through hole 121, second anti-drop block 122, large male terminal 13, first through hole 131, first anti-drop block 132, outer mounting cavity 14, second rib 141, third rib 142, inner mounting cavity 15, plug bolt 151, window 152, lock shaft 16, glue filling area 17, blocking plate 18, inner sealing ring 19,

outer base 22, upper mounting cavity 221, first rib 2211, lower mounting cavity 222, second groove 2221, avoidance hole 2222, handle 23, outer sealing ring 24,

the plug secondary lock 32, the base 321, the positioning groove 322, the lower positioning groove 323, the fourth boss 324, the first handle 325, the error-proof slant block 326, the error-proof boss 327,

side beam 41, front beam 42, center beam 43, preassembly positioning groove 431, locking positioning groove 432, rear beam 44, big end bolt 441, elastic groove 45, locking boss 46,

the small terminal block 51, the large terminal block 61,

a large terminal cavity 701, a positioning boss 7011, a large end locking port 7012, a small terminal cavity 702, a small end locking port 7022, a first isolating groove 703, a second isolating groove 704, a first positioning surface 705, a buckling boss 706,

an inner terminal housing 71, a plug lock cavity 711, a lock boss 7111, a cantilever plate 712, a second handle 7121, a plug lock 7122,

the external terminal housing 72, the sealing boss 721, the positioning block 722, and the first groove 723.

Detailed Description

Referring to fig. 1-30, which are schematic structural diagrams of the present invention, a cylinder penetrating connector integrating large and small currents comprises an intermediate base 1, an outer plug 2 and an inner plug 3, wherein an outer installation cavity 14 and an inner installation cavity 15 are partitioned inside the intermediate base 1, two large male terminals 13 and a plurality of small male terminals 12 are fixed on the intermediate base, two ends of each of the large male terminals 13 and the small male terminals 12 extend into the outer installation cavity 14 and the inner installation cavity 15 respectively, the outer plug 2 is inserted into the outer installation cavity 14, the inner plug 3 is inserted into the inner installation cavity 15, the small male terminals 12 are arranged in a straight line, and the flat surface direction of the large male terminals 13 is perpendicular to the straight line direction of the small male terminals 12. As in fig. 15.

By arranging the large male terminal 13 and the small male terminal 12 at 90 degrees, the electrical gap is better satisfied, preventing the circuit from breaking down.

Preferably, the bottom of one of the outer mounting cavity 14 and the inner mounting cavity 15 is provided with a glue filling area 17, the bottom of the other one is provided with a blocking plate 18, and the blocking plate 18 is located between the two large male terminals 13 and between the large male terminal 13 and the small male terminal 12. The glue filling area 17 is used for filling glue to realize a sealing effect. By providing the barrier plate 18, the circuit breakdown is prevented. As in fig. 17.

The barrier panel 18 may be t-shaped.

Preferably, the outer plug 2 and the inner plug 3 are each provided with a terminal shell 7 for inserting a female terminal, respectively an inner terminal shell 71 and an outer terminal shell 72, the terminal shells 7 are each provided with a large terminal cavity 701 and a small terminal cavity 702, a large female terminal 6 is inserted into each large terminal cavity 701, and a small female terminal 5 is inserted into each small terminal cavity 702;

the outer plug 2 and the inner plug 3 are both provided with a terminal secondary lock 4, the mounting position of the terminal secondary lock 4 is provided with two switchable states including a pre-mounting position and a locking position, when the terminal secondary lock 4 is located at the pre-mounting position, the terminal secondary lock is connected with the terminal shell 7 into a whole, but the large terminal cavity 701 and the small terminal cavity 702 can be plugged with or pulled out of a female terminal, when the terminal secondary lock 4 is located at the locking position, the terminal secondary lock is connected with the terminal shell 7 into a whole, and the female terminal cannot be pulled out of the terminal shell 7.

Preferably, a second partition groove 704 is arranged between the outer walls of the large terminal cavity 701 and the small terminal cavity 702, a first positioning surface 705 is formed by extending the groove bottom of the second partition groove 704, a large end locking port 7012 communicated with the large terminal cavity 701 is arranged on the outer walls of the large terminal cavity 701 and the second partition groove 704 opposite to each other, and a small end locking port 7022 communicated with the small terminal cavity 702 is arranged at the bottom of the second partition groove 704; as shown in fig. 22, the small end locking notch 7022 can be a through slot.

The secondary terminal lock 4 is of a frame-shaped structure and is provided with a side beam 41, a front beam 42 and a rear beam 44, a large-end locking bolt 441 protrudes from the inner side surface of the rear beam 44, at least one buckling boss 706 is arranged on the outer wall of the large terminal cavity 701 or the outer wall of the small terminal cavity 702, and the secondary terminal lock 4 is sleeved on the outer walls of the two large terminal cavities 701 and clamped between the buckling boss 706 and a first positioning surface 705; as shown in fig. 26, there are two large end locking tongues 441, two snap bosses 706 may be respectively disposed on the outer walls of the large terminal cavity 701 opposite to the first partition groove 703, and two outer walls of the small terminal cavity 702 adjacent to the second partition groove 704, the upper end surface of the snap bosses 706 is a transition inclined surface, and the lower end surface thereof is a step plane.

The secondary terminal lock 4 is limited at a preassembly position or a locking position through a buckle structure matched with the terminal shell 7;

when the secondary terminal lock 4 is located at the locking position, the large-end lock tongue 441 extends into the large-end lock opening 7012, the upper end face of the large-end lock tongue abuts against the shoulder face of the large terminal head 61 of the large female terminal 6, the front beam 42 extends into the small-end lock opening 7022, and the upper end face of the front beam abuts against the shoulder face of the small terminal head 51 of the small female terminal 5.

Preferably, a first partition groove 703 communicated with the second partition groove 704 is arranged between the outer walls of the large terminal cavities 701, the middle parts of the front beam 42 and the rear beam 44 are connected with a middle beam 43, the middle beam 43 is positioned in the first partition groove 703, both sides of the middle beam 43 are provided with a preassembly positioning groove 431 and a locking positioning groove 432, the middle part of the middle beam is provided with an elastic groove 45 in a penetrating manner, adjacent outer walls of the two large terminal cavities 701 are provided with positioning bosses 7011 protruding into the first partition groove 703, and the positioning bosses 7011 are clamped in the preassembly positioning grooves 431 or the locking positioning grooves 432. As shown in fig. 25, the elastic groove 45 is provided to increase the elasticity of the local position of the center sill 43 so as to generate elastic deformation when abutting against the positioning boss 7011 or the snap boss 706 to be assembled in place.

Preferably, a first partition groove 703 communicated with the second partition groove 704 is formed between the outer walls of the large terminal cavity 701, the middle portions of the front beam 42 and the rear beam 44 are connected with a middle beam 43, the middle beam 43 is located in the first partition groove 703, at least one of the two side surfaces of the middle beam 43 is provided with a pre-installation positioning groove 431 and a locking positioning groove 432, the adjacent outer wall of the corresponding large terminal cavity 701 is provided with a positioning boss 7011, and the positioning boss 7011 is clamped in the pre-installation positioning groove 431 or the locking positioning groove 432. As in fig. 25.

Preferably, the outer plug 2 is further provided with an outer base 22 for mounting the outer terminal housing 72 and connecting the middle base 1;

an upper mounting cavity 221 for inserting the external terminal shell 72 is formed in the outer base 22, a plurality of first ribs 2211 protrude from the inner wall of the upper mounting cavity 221, a first groove 723 is correspondingly formed in the external terminal shell 72, the first ribs 2211 are inserted into the first groove 723, and the lower end of the first ribs 2211 is abutted to the bottom of the first groove 723; as in fig. 29.

A sealing boss 721 is arranged on the periphery of the middle part of the outer terminal shell 72, the lower end face of the sealing boss 721 is a first positioning face 705, and an outer sealing ring 24 is sleeved on the upper end face of the sealing boss 721;

as shown in fig. 9, a lower mounting cavity 222 for inserting a side wall of the outer mounting cavity 14 is further disposed in the outer base 22, a plurality of second grooves 2221 are disposed on an inner wall of the lower mounting cavity 222, a plurality of third ribs 142 are correspondingly disposed on an outer wall of the outer mounting cavity 14, the third ribs 142 are clamped in the second grooves 2221, and an inner wall of the outer mounting cavity 14 abuts against an outer side surface of the outer sealing ring 24; as in fig. 29.

As shown in fig. 9, a plurality of second ribs 141 are disposed on an inner wall of the outer mounting cavity 14, a plurality of positioning blocks 722 are disposed on an outer wall of the small terminal cavity 702 of the outer terminal housing 72 opposite to the second partition groove 704, and the positioning blocks 722 are inserted between the second ribs 141;

as shown in fig. 29, the corresponding position of the lower mounting cavity 222 is provided with an avoiding hole 2222 for pushing the terminal secondary lock 4.

Preferably, the outer base 22 is provided with a handle 23 for secondary safety locking of the middle base 1 and the outer plug 2, and the middle base 1 is correspondingly provided with a lock shaft 16. As shown in fig. 1 and 2.

Preferably, the inner plug 3 is provided with an inner terminal shell 71 for inserting a female terminal, one side of the inner terminal shell 71 is provided with a plug lock cavity 711, two sides of the inside of the plug lock cavity 711 are provided with locking bosses 7111, two cantilever plates 712 with a cantilever structure are arranged outside the plug lock cavity 711, the upper ends of the cantilever plates 712 are both connected with the inner terminal shell 71 body, the lower ends of the cantilever plates are fixedly connected with a second handle 7121, and a plug lock 7122 is further connected between the cantilever plates 712; as in FIG. 23;

a plug secondary lock 32 is inserted into the plug lock cavity 711, the plug secondary lock 32 is provided with a frame-shaped base 321, two sides of the base 321 are provided with an upper positioning groove 322 and a lower positioning groove 323, the bottom of the base 321 is provided with a fourth boss 324 and a first handle 325 for withdrawing the plug secondary lock 32, the base 321 is positioned in the plug lock cavity 711, and the locking boss 7111 is clamped in the upper positioning groove 322 or the lower positioning groove 323; as in fig. 25.

Be equipped with plug spring bolt 151 on the corresponding inner wall of interior installation cavity 15, the lower terminal surface of plug spring bolt 151 is equipped with the direction inclined plane, when locking boss 7111 is located down constant head tank 323, the lower terminal surface butt plug spring bolt 151's of plug hasp 7122 up end, the medial surface of fourth boss 324 lateral surface butt second handle 7121 of plug secondary lock 32. As in fig. 14.

A window 152 may be disposed above the plug latch 151, and the position of the plug lock 7122 may be viewed through the window 152. As in fig. 14.

Preferably, be equipped with mistake proofing sloping block 326 on fourth boss 324, mistake proofing sloping block 326's the outside is equipped with mistake proofing boss 327, mistake proofing boss 327's lower terminal surface is transition inclined plane, and its up end is the plane, establishes in last constant head tank 322 when locking boss 7111 card, mistake proofing boss 327's up end butt plug hasp 7122's lower terminal surface, establishes under in constant head tank 323 when locking boss 7111 card, mistake proofing boss 327's transition inclined plane butt plug hasp 7122's up end. As in fig. 28.

Preferably, the top surface of the rear beam 44 is provided with a locking boss 46. It is convenient to use a tool to push the terminal secondary lock 4 from the lock position to the pre-mount position. As in fig. 26.

Preferably, as in the center sill 43, the side sill 41 and the front sill 42 are provided with elastic grooves 45 for improving the elasticity of the local positions of the side sill 41, the front sill 42 and the center sill 43 and for avoiding the boss structure during installation.

Preferably, the middle portions of the large male terminals 13 are provided with first through holes 131, and the middle portions of the small male terminals 12 are provided with second through holes 121. The cavity in the middle of setting up, the integral type back of moulding plastics, public terminal is better with middle base 1's joint strength. As shown in fig. 18 and 19.

Preferably, the middle parts of both sides of the large male terminal 13 are respectively provided with a first anti-falling block 132, and the middle parts of both sides of the small male terminal 12 are respectively provided with a second anti-falling block 122. The connection strength of the male terminal and the middle base 1 is enhanced, and the male terminal can also be applied to products pressed into plastic parts. As shown in fig. 18 and 19.

Preferably, an inner sealing ring 19 is arranged below the mounting flange 11 of the middle base 1. As in fig. 17.

Preferably, a mounting flange 11 is arranged on the periphery of the middle part of the middle base 1, and a mounting hole 111 is formed in the mounting flange 11. The cylinder-through type electric connector is suitable for being installed through a single bolt. As in fig. 17.

Specifically, 2 large male terminals 13 with the length of 2 × 5.8mm and small male terminals 12 with the length of 4 × 1.0mm can be selected, and the total 6pin pins can meet the current performance requirements of 2x50A and 4x 10A. And 2 or 3 small male terminals 12 can be selected according to specific use requirements.

The large male terminal 13 and the small male terminal 12 are both of an integrated punch forming structure, so that the production cost is reduced, silver is plated on the surface, and the conductive effect is improved.

When a manufacturer assembles the secondary terminal lock 4, the secondary terminal lock 4 is sleeved on the outer walls of the two large terminal cavities 701, the middle beam 43 is positioned in the first partition groove 703, the front beam 42 is positioned in the second partition groove 704, the secondary terminal lock 4 moves downwards to contact the first positioning surface 705, the secondary terminal lock 4 is clamped by the clamping boss 706 in the up-down direction, and meanwhile, the positioning boss 7011 is positioned in the pre-installation positioning groove 431, so that the secondary terminal lock 4 is installed. In this state, the product can be delivered from the manufacturer to the user. After the female terminals are inserted into the large terminal cavity 701 and the small terminal cavity 702 by a manufacturer, the rear beam 44 is pushed by pressing, the front beam 42 extends into the small-end locking opening 7022 to lock the small female terminal 5, the large-end locking tongue 441 extends into the large-end locking opening 7012 to lock the large female terminal 6, and meanwhile, the positioning boss 7011 moves into the locking positioning groove 432 to prevent the secondary terminal lock 4 from loosening.

When a manufacturer assembles the plug secondary lock 32, the plug secondary lock 32 is inserted into the plug lock cavity 711, so that the locking boss 7111 is firstly clamped in the lower positioning groove 323, the upper end face of the error-proof boss 327 abuts against the lower end face of the plug lock tongue 7122 and cannot be continuously inserted, when the inner terminal shell 71 provided with the plug secondary lock 32 is inserted into the inner installation cavity 15 of the middle base 1, if the plug secondary lock is inserted in place, the lower end face of the plug lock tongue 7122 abuts against the upper end face of the plug lock tongue 151, the plug lock tongue 151 pushes the error-proof boss 327 open, at the moment, the first 325 handle is pressed, so that the plug secondary lock 32 can be pressed in place, the locking boss 7111 enters the upper positioning groove 322, the outer side face of the fourth boss 324 of the plug secondary lock 32 abuts against the inner side face of the second handle 7121, the plug lock tongue 151 is prevented from being separated from the plug lock tongue 7122, and misoperation is prevented, so that the inner terminal shell 71 is separated from the middle base 1. If the inner terminal shell 71 is not inserted in place during assembly, the plug latch 151 cannot be pushed continuously, and the function of detecting whether the inner terminal shell 71 is inserted in place is also achieved. It is of course possible to see through the window 152 whether the plug snaps 7122 are in place.

The handle 23 structure is a common safety locking structure of the direct-insertion type electric connector, and prevents the outer plug 2 from being mistakenly pulled out from the middle base 1.

The connecting structures of the invention also use the conventional buckle connecting structure, which comprises the connection of a small female terminal 5, a large female terminal 6, a small terminal cavity 702 and a large terminal cavity 701, the connection of an inner plug 3 and a middle base 1, the connection of an outer plug 2 and an outer base 22, and the connection of the outer base 22 and the middle base 1. The common buckle connection structure is a boss with an inclined surface and a groove matched with the boss.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The cylinder penetrating connector is characterized by comprising an intermediate base (1), an outer plug (2) and an inner plug (3), wherein an outer installation cavity (14) and an inner installation cavity (15) are formed in the intermediate base (1) in a separated mode, two large male terminals (13) and a plurality of small male terminals (12) are fixed on the intermediate base, two ends of each large male terminal (13) and each small male terminal (12) respectively extend into the outer installation cavity (14) and the inner installation cavity (15), the outer plug (2) is inserted into the outer installation cavity (14), the inner plug (3) is inserted into the inner installation cavity (15), the small male terminals (12) are distributed in a linear mode, and the direction of the flat surface of each large male terminal (13) is perpendicular to the linear direction of the corresponding small male terminal (12).

2. The cylinder-penetrating connector integrating large and small currents as claimed in claim 1, wherein a glue filling area (17) is arranged at the bottom of one of the outer installation cavity (14) and the inner installation cavity (15), a blocking plate (18) is arranged at the bottom of the other installation cavity, and the blocking plate (18) is located between the two large male terminals (13) and between the large male terminal (13) and the small male terminal (12).

3. The cylinder-through connector for large and small currents according to claim 1, wherein the outer plug (2) and the inner plug (3) are provided with terminal housings (7) for inserting female terminals, respectively an inner terminal housing (71) and an outer terminal housing (72), the terminal housings (7) are provided with a large terminal cavity (701) and a small terminal cavity (702), the large terminal cavity (701) is provided with a large female terminal (6), and the small terminal cavity (702) is provided with a small female terminal (5);

the terminal secondary lock comprises an outer plug (2), an inner plug (3) and a terminal secondary lock (4), wherein the outer plug (2) and the inner plug (3) are respectively provided with the terminal secondary lock (4), the mounting position of the terminal secondary lock (4) is provided with two switchable states including a pre-mounting position and a locking position, when the terminal secondary lock (4) is located at the pre-mounting position, the terminal secondary lock and the terminal shell (7) are connected into a whole, but female terminals can be inserted into and pulled out of a large terminal cavity (701) and a small terminal cavity (702), and when the terminal secondary lock (4) is located at the locking position, the terminal secondary lock and the terminal shell (7) are connected into a whole, and the female terminals cannot be pulled out of the terminal shell (7).

4. The cylinder penetrating connector integrating large current and small current as claimed in claim 3, wherein a second isolating groove (704) is arranged between the outer walls of the large terminal cavity (701) and the small terminal cavity (702), a first locating surface (705) is formed by extending the groove bottom of the second isolating groove (704), a large terminal locking notch (7012) communicated with the large terminal cavity (701) is arranged on each of the outer walls of the large terminal cavity (701) and the second isolating groove (704) opposite to each other, and a small terminal locking notch (7022) communicated with the small terminal cavity (702) is arranged at the bottom of the second isolating groove (704);

the secondary terminal lock (4) is of a frame-shaped structure and is provided with a side beam (41), a front beam (42) and a rear beam (44), a large-end lock tongue (441) is arranged on the inner side surface of the rear beam (44) in a protruding mode, at least one buckling boss (706) is arranged on the outer wall of each large terminal cavity (701) or each small terminal cavity (702), and the secondary terminal lock (4) is sleeved on the outer walls of the two large terminal cavities (701) and clamped between the buckling bosses (706) and a first positioning surface (705);

the secondary terminal lock (4) is limited to a preassembly position or a locking position through a buckle structure matched with the terminal shell (7);

when the terminal secondary lock (4) is located at a locking position, the big end lock tongue (441) extends into the big end locking notch (7012), the upper end face of the big end lock tongue abuts against the shoulder face of the big terminal head (61) of the big female terminal (6), the front beam (42) extends into the small end locking notch (7022), and the upper end face of the front beam abuts against the shoulder face of the small terminal head (51) of the small female terminal (5).

5. The cylinder-penetrating connector integrating large and small currents as claimed in claim 4, wherein a first isolating groove (703) communicated with a second isolating groove (704) is formed between outer walls of the large terminal cavity (701), a middle beam (43) is connected to the middle portions of the front beam (42) and the rear beam (44), the middle beam (43) is located in the first isolating groove (703), both sides of the middle beam are provided with a pre-installation positioning groove (431) and a locking positioning groove (432), the middle portion of the middle beam is provided with an elastic groove (45) in a penetrating mode, positioning bosses (7011) protruding into the first isolating groove (703) are arranged on adjacent outer walls of the two large terminal cavities (701), and the positioning bosses (7011) are clamped in the pre-installation positioning grooves (431) or the locking positioning grooves (432).

6. The cylinder-through connector integrating large and small currents as claimed in claim 4, wherein a first isolating groove (703) communicated with a second isolating groove (704) is formed between outer walls of the large terminal cavity (701), a middle beam (43) is connected to the middle portions of the front beam (42) and the rear beam (44), the middle beam (43) is located in the first isolating groove (703), at least one of two side surfaces of the middle beam is provided with a pre-installation positioning groove (431) and a locking positioning groove (432), a positioning boss (7011) is arranged on the adjacent outer wall of the corresponding large terminal cavity (701), and the positioning boss (7011) is clamped in the pre-installation positioning groove (431) or the locking positioning groove (432).

7. The cylinder-through connector for large and small currents as claimed in claim 5, wherein said outer plug (2) is further provided with an outer base (22) for mounting an outer terminal housing (72) and connecting to the intermediate base (1);

an upper mounting cavity (221) for inserting an outer terminal shell (72) is formed in the outer base (22), a plurality of first ribs (2211) are arranged on the inner wall of the upper mounting cavity (221) in a protruding mode, a first groove (723) is correspondingly formed in the outer terminal shell (72), the first ribs (2211) are inserted into the first groove (723), and the lower end of the first ribs abuts against the bottom of the first groove (723);

a sealing boss (721) is arranged on the periphery of the middle part of the outer terminal shell (72), the lower end face of the sealing boss (721) is a first positioning face (705), and an outer sealing ring (24) is sleeved on the upper end face of the sealing boss (721);

a lower mounting cavity (222) for inserting the side wall of the outer mounting cavity (14) is further arranged in the outer base (22), a plurality of second grooves (2221) are formed in the inner wall of the lower mounting cavity (222), a plurality of third ribs (142) are correspondingly arranged on the outer wall of the outer mounting cavity (14), the third ribs (142) are clamped in the second grooves (2221), and the inner wall of the outer mounting cavity (14) is abutted to the outer side face of the outer sealing ring (24);

a plurality of second ribs (141) are arranged on the inner wall of the outer mounting cavity (14), a plurality of positioning blocks (722) are arranged on the outer wall of the small terminal cavity (702) of the outer terminal shell (72) opposite to the second partition groove (704), and the positioning blocks (722) are inserted between the second ribs (141);

and an avoiding hole (2222) for pushing the secondary terminal lock (4) is formed in the corresponding position of the lower mounting cavity (222).

8. The cylinder penetrating connector with integrated large and small currents as claimed in claim 7, wherein a handle (23) for secondary safety locking of the middle base (1) and the outer plug (2) is arranged on the outer base (22), and a locking shaft (16) is correspondingly arranged on the middle base (1).

9. The cylinder-through connector for large and small currents as claimed in claim 1, wherein the inner plug (3) is provided with an inner terminal shell (71) for inserting a female terminal, a plug lock cavity (711) is formed in one side of the inner terminal shell (71), locking bosses (7111) are formed in two sides of the interior of the plug lock cavity (711), two cantilever plates (712) with overhanging structures are arranged on the outer side of the plug lock cavity (711), the upper ends of the cantilever plates (712) are connected with the body of the inner terminal shell (71), the lower ends of the cantilever plates are fixedly connected with a second handle (7121), and a plug lock catch (7122) is further connected between the cantilever plates (712);

a plug secondary lock (32) is inserted into the plug lock cavity (711), the plug secondary lock (32) is provided with a frame-shaped base body (321), two sides of the base body (321) are provided with an upper positioning groove (322) and a lower positioning groove (323), the bottom of the base body is provided with a fourth boss (324) and a first handle (325) for withdrawing the plug secondary lock (32), the base body (321) is positioned in the plug lock cavity (711), and the locking boss (7111) is clamped in the upper positioning groove (322) or the lower positioning groove (323);

be equipped with plug spring bolt (151) on the corresponding inner wall of interior installation cavity (15), the lower terminal surface of plug spring bolt (151) is equipped with the direction inclined plane, when locking boss (7111) is located down constant head tank (323), the up end of lower terminal surface butt plug spring bolt (151) of plug hasp (7122), the medial surface of fourth boss (324) lateral surface butt second handle (7121) of plug secondary lock (32).

10. The cylinder-penetrating connector integrating large current and small current as claimed in claim 9, wherein an error-proof oblique block (326) is disposed on the fourth boss (324), an error-proof boss (327) is disposed on an outer side of the error-proof oblique block (326), a lower end face of the error-proof boss (327) is a transition inclined plane, an upper end face of the error-proof boss is a plane, when the locking boss (7111) is clamped in the upper positioning groove (322), an upper end face of the error-proof boss (327) abuts against a lower end face of the plug lock catch (7122), when the locking boss (7111) is clamped in the lower positioning groove (323), the transition inclined plane of the error-proof boss 327 abuts against an upper end face of the plug lock catch (7122).