CN107394520B

CN107394520B - Electric connector combination

Info

Publication number: CN107394520B
Application number: CN201710791600.8A
Authority: CN
Inventors: 汪光宇; 张金国; 蒋乐
Original assignee: Dongtai Zhengyao Precision Technology Co ltd
Current assignee: Dongtai Zhengyao Precision Technology Co ltd
Priority date: 2017-09-05
Filing date: 2017-09-05
Publication date: 2023-05-05
Anticipated expiration: 2037-09-05
Also published as: CN107394520A

Abstract

The invention provides an electric connector combination, which comprises an electric connector and a butt connector which are matched with each other, wherein the electric connector comprises a first insulating body, a plurality of first conductive terminals fixed in the first insulating body and a first metal shell assembled on the first insulating body, the first insulating body is provided with a plurality of first terminal channels penetrating the first insulating body along the front-back direction so as to accommodate the corresponding first conductive terminals, the first metal shell is assembled outside the first insulating body along the front-back direction, and the first metal shell extends backwards so that the rear end face of the first metal shell is at least level with the rear end face of the first insulating body, and the front end face of the first metal shell is positioned in front of the front end face of the first insulating body. The electric connector assembly structure is compact and has good shielding effect.

Description

Electric connector combination

Technical Field

The present invention relates to an electrical connector assembly, and more particularly, to a miniaturized electrical connector assembly with good shielding effect.

Background

The electric connector is widely applied to charging equipment in the fields of new energy automobiles, industrial equipment, urban rails, railway vehicle electrical appliances and the like and is used for realizing outdoor high-current charging, and the common high-current charging connector is large in appearance, heavy in use and not provided with a shielding function.

In view of the foregoing, there is a need for an improved electrical connector assembly that solves the above-described problems.

Disclosure of Invention

The invention aims to provide a miniaturized electric connector combination with good shielding effect.

In order to achieve the above object, the present invention provides an electrical connector assembly, which comprises an electrical connector and a mating connector, wherein the electrical connector comprises a first insulating body, a plurality of first conductive terminals fixed in the first insulating body, and a first metal housing assembled in the first insulating body, the first insulating body has a plurality of first terminal channels penetrating the first conductive terminals along the front-rear direction to accommodate the corresponding first conductive terminals, the first metal housing is assembled outside the first insulating body along the front-rear direction, the first metal housing extends backwards to enable the rear end surface to be at least flush with the rear end surface of the first insulating body, the front end surface of the first metal housing is positioned in front of the front end surface of the first insulating body, the first insulating body has three first accommodating spaces penetrating in the front-rear direction, the two first accommodating spaces on the upper side are symmetrically arranged and two circular shapes with the same size, the lower first accommodating space is symmetrically arranged in the lower side of the two first accommodating spaces, the first metal housing is arranged on the upper side of the first accommodating spaces, the first metal housing is positioned on the lower side of the first terminal, the first insulating body has a first signal board is positioned on the upper side of the first insulating body, the signal board is positioned on the first signal board is positioned on the upper side of the signal board, and the signal board is positioned on the signal board, the signal board is positioned on the upper side of the signal board, and has a signal board, and has signal board, the plate comprises a plate body, a pair of bending parts and a supporting part, wherein the bending parts are positioned at the rear end of the plate body, the supporting part is formed by downwards protruding from the plate body, the free tail end of the supporting part is embedded in the first insulating body, the pair of bending parts are oppositely bent to form, and the supporting part protrudes downwards and is clamped on the inner surface of the first metal shell.

As a further improvement of the present invention, the first conductive terminal is embedded in the first insulating body, and has two pairs of the first signal terminals and one pair of the first detection terminals, and the first power terminal is an elastic terminal.

As a further improvement of the invention, the first metal shell is provided with a basal body wrapped outside the first insulating body, a mounting frame formed by protruding outwards from the basal body and an annular extension part positioned at the front side of the basal body, a mounting groove is formed at the inner side of the mounting frame, and the extension part is positioned in the mounting groove.

As a further improvement of the present invention, the first insulating body has a first main portion at a rear side thereof and a first abutting portion at a front side thereof, the first abutting portion protruding into the extension portion with a certain gap formed with an inner surface of the extension portion.

As a further improvement of the invention, the electric connector is also provided with a first protective cover arranged at the front end of the first metal shell, the first protective cover is provided with a mounting plate and a cover plate connected with one side of the mounting plate, the mounting plate of the first protective cover is assembled into the mounting groove from front to back, and the first protective cover is connected with the first metal shell through a connecting piece.

As a further improvement of the invention, one side of the cover plate, which faces the mounting plate, is convexly provided with a plurality of blocking bodies which are respectively matched with the shape and the size of the corresponding first accommodating space, and an outer edge part which is positioned outside the blocking bodies, when the cover plate is covered on the mounting plate, the outer edge part is clamped between the first butt joint part and the inner surface of the extension part, and the blocking bodies are respectively inserted into the corresponding first accommodating spaces to seal the front end openings of the blocking bodies.

As a further improvement of the invention, the rear end surface of the base body is concavely provided with at least one opening, and the positioning block arranged at the rear end of the first insulating body is inserted into the corresponding opening arranged at the rear end of the first metal shell forwards and is fixedly matched with the corresponding opening so as to fix the first insulating body with the first metal shell.

As a further improvement of the invention, the electric connector is connected with the equipment to be charged, the butt joint connector is connected with the output equipment through a cable connected with the tail end of the electric connector, and the first metal shell is provided with a buckling hole which is buckled with a buckling arm arranged on the butt joint connector.

The electric connector combination can meet the related protection requirements, meanwhile, the product structure is compact in arrangement, and the metal shell is completely coated outside the insulator body, so that the electric connector combination has a good shielding function.

Drawings

Fig. 1 is a perspective assembly view of an electrical connector assembly according to a preferred embodiment of the present invention.

Fig. 2 is a schematic perspective view of the electrical connector assembly of fig. 1 after mating the receptacle connector with the plug connector.

Fig. 3 to 4 are perspective assembly views of the receptacle connector shown in fig. 1.

Fig. 5 is a partially exploded view of the receptacle connector of fig. 3.

Fig. 6 is an exploded perspective view of the receptacle connector of fig. 5 with the shield cover and the first metal shell removed.

Fig. 7 is a partially exploded view of the receptacle connector of fig. 5 with the shield cover removed.

Fig. 8 is a front view of the receptacle connector of fig. 3.

Fig. 9 is a perspective assembly view of the plug connector of fig. 1.

Fig. 10-11 are partially exploded views of the plug connector of fig. 9.

Fig. 12 is a perspective assembly view of the plug connector of fig. 9 with the second metal shell, additional housing and latch removed.

Fig. 13 is an exploded perspective view of the plug connector of fig. 12.

Fig. 14 is a front view of the plug connector of fig. 9.

Fig. 15 is a schematic cross-sectional view of the electrical connector assembly of fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 2, an electrical connector assembly of the present invention is shown, the electrical connector assembly includes a socket connector 100 and a plug connector 200 mated with each other, wherein the socket connector 100 is connected to a device to be charged, and the plug connector 200 is connected to an output device through a cable connected to an end thereof. In the following description, only the receptacle connector 100 is described as an electrical connector and the plug connector 200 is described as a mating connector; in other embodiments, the plug connector 200 may be used as an electrical connector and the receptacle connector 100 may be used as a mating connector. For convenience of description, when the receptacle connector 100 or the plug connector 200 is described separately, the mating end is referred to as a front end, and the other end opposite to the mating end is referred to as a rear end.

Referring to fig. 3 to 8, a receptacle connector 100 according to a preferred embodiment of the invention is shown, wherein the receptacle connector 100 includes a first insulating body 11, a plurality of first conductive terminals 12 fixed in the first insulating body 11, and a first metal housing 13 assembled in the first insulating body 11.

Referring to fig. 3 to 8, the first insulating body 11 has a first main body 111 at a rear side thereof, a first butt joint portion 112 at a front side thereof, and a plurality of first receiving spaces 110 penetrating the first main body in a front-rear direction to receive corresponding first conductive terminals 12. In this embodiment, the number of the first accommodating spaces 110 is three, and the two first accommodating spaces 110 on the upper side are two circles symmetrically arranged when viewed from the front butt end to the rear, and the two first accommodating spaces 110 on the lower side are the same in size, and the one first accommodating space 110 on the lower side is centered and symmetrically arranged below the two first accommodating spaces 110, and on the butt surface, the center points of the three first accommodating spaces 110 form an isosceles triangle (as shown in fig. 8). In addition, a terminal slot (not shown) penetrating in the front-rear direction is provided in the upper first accommodation space 110, and a plurality of terminal slots penetrating in the front-rear direction are provided in the lower first accommodation space 110.

The first body 111 is internally provided with a wall portion 1112, and the wall portion 1112 extends in a direction perpendicular to the axis thereof and is connected to the inner surface of the first body 111. Further, a positioning block 1113 protruding outward is provided on the outer peripheral surface of the first body 111, and the positioning block 1113 is provided at the rear end of the first body 111.

The first abutting portion 112 is formed by extending forward from the front end surface of the wall portion 1112, and the rear section of the first abutting portion 112 is located inside the first main body portion 111, and the front section thereof is exposed to the front of the first main body portion 111.

The first insulating body 11 further has a flange 113 at a front end of the first main body 111, the flange 113 having a shape corresponding to a basic shape of the first main body 111 but smaller than the first main body 111, and the first abutting portion 112 extending forward and protruding to a front side of the flange 113.

Referring to fig. 3 to 8, the first conductive terminals 12 are embedded in the first insulating body 11 and symmetrically disposed, and include a pair of first power terminals 121, two pairs of first signal terminals 122 and a pair of first detection terminals 123, and in other embodiments, the number of the first power terminals 121, the number of the first signal terminals 122 and the number of the first detection terminals 123 may be set according to application requirements. The first power terminal 121 is an elastic terminal, and is located above the first signal terminal 122 and the first detection terminal 123, and the first detection terminal 123 is located at two sides of the first signal terminal 122 in the lateral direction. Each first conductive terminal 12 is further provided with a waterproof ring 124 therein. The first power terminal 121 has a cylindrical first contact portion 1211 and an insulating portion 1212 at a front end thereof, and the insulating portion 1212 is assembled from front to back and is snap-fitted to the front end of the first contact portion 1211.

Referring to fig. 3 to 5 and 7, the first metal housing 13 is also symmetrically disposed, and is assembled on the outer side of the first insulating body 11 from front to back, and has a base 131, a mounting frame 132 protruding from the base 131, and an annular extension 133 located on the front side thereof. The rear end surface of the base 131 is recessed forward to form at least one opening 1311, in this embodiment, the number of the openings 1311 is three, and one of the openings is located on the upper side of the base 131, and the other two openings are symmetrically disposed on two sides in the lateral direction thereof.

The inner side of the mounting frame 132 is formed with a mounting groove 1321, the extension portion 133 is located in the mounting groove 1321, and the upper and lower sides of the mounting frame 132 are respectively recessed backward to form a notch 1322. The extending portion 133 extends forward so that a front end surface thereof is located at a front side of the mounting frame 132, and a fastening hole 1331 for fastening with a fastening hook provided on the plug connector 200 is provided on the extending portion 133, and in this embodiment, the fastening hole 1331 is located at a top of the extending portion 133.

The first metal casing 13 further has mounting holes extending in a front-rear direction, the mounting holes are distributed at corners of the first metal casing 13, in this embodiment, the mounting holes include front mounting holes 1341 and rear mounting holes 1342, the front mounting holes 1341 are aligned with the corresponding rear mounting holes 1342 in the front-rear direction, the front mounting holes 1341 are communicated with the mounting slots 1321, and the rear mounting holes 1342 are opened rearward.

Referring to fig. 4 to 7, the receptacle connector 100 further includes a first rear cover 14 assembled and fixed to the mounting end of the first metal shell 13, the first rear cover 14 includes a coupling portion 141, an insertion portion 142 protruding forward from the coupling portion 141, and a rear protrusion 143 protruding backward from the coupling portion 141, and a plurality of coupling holes 1411 aligned with the corresponding mounting holes are formed on the periphery of the coupling portion 141. The first rear cover 14 is formed with a plurality of receiving channels 144 penetrating in the front-rear direction, and the receiving channels 144 are aligned with the corresponding terminal grooves in the first receiving space 110 in the front-rear direction. The middle part of the coupling part 141 is recessed inward from the front end surface thereof, and forms a peripheral wall at the outer edge, and a plurality of reinforcing ribs 145 are further provided between the peripheral wall and the insertion part 142.

The socket connector 100 further comprises a first protection cover 15 disposed at the front end of the first metal housing 13, a first sealing ring 16 sleeved outside the first insulating body 11, and a grounding member 17 embedded and formed at the bottom of the first insulating body 11.

The first protection cover 15 has a mounting plate 151 and a cover plate 152 connected to one side of the mounting plate 151, a plurality of connection holes 1512 penetrating the mounting plate 151 along a front-rear direction are provided on the periphery of the mounting plate 151, and the connection holes 1512 are aligned with corresponding front mounting holes 1341 along the front-rear direction, so that a connecting piece (not shown) can be sequentially inserted into the connection holes 1512 and the front mounting holes 1341 from front to rear, and then the first protection cover 15 and the first metal casing 13 are connected into a whole. The cover plate 152 is connected to one side of the mounting plate 151 in an openable manner, and a plurality of blocking bodies 1521 respectively matching the shape and the size of the corresponding first receiving space 110 and an outer edge 1522 located at the periphery of the blocking bodies 1521 are convexly arranged on one side of the cover plate 152, which faces the mounting plate 151.

The first seal ring 16 is annular, and at least one annular rib 161 is formed to protrude from the inner wall thereof toward the central axis.

Referring to fig. 4, 6 and 7, the grounding member 17 includes a plate body 171, a holding portion 172 disposed at two sides of the plate body 171 in a lateral direction, a pair of bending portions 173 disposed at a rear end of the plate body 171, and a supporting portion 174 protruding downward from the plate body 171, wherein free ends of the holding portion 172 are embedded in the first insulating body 11, the pair of bending portions 173 are bent in opposite directions, and the supporting portion 174 protrudes downward and is clamped on an inner surface of the first metal housing 13.

During assembly, the first conductive terminal 12 and the grounding member 17 are embedded and formed in the first insulating body 11, the first metal housing 13 is sleeved on the outer side of the first insulating body 11 from front to back, wherein the rear end face of the first metal housing 13 is flush with the rear end face of the first insulating body 11, and the front end face of the first metal housing 13 is located in front of the front end face of the first insulating body 11, so that noise interference in the use process can be effectively eliminated, and the shielding effect of the socket connector 100 is enhanced.

The positioning block 1113 disposed at the rear end of the first insulating body 11 is inserted forward into the corresponding opening 1311 disposed at the rear end of the first metal shell 13 and fixedly engaged therewith, so as to fix the first insulating body 11 and the first metal shell 13. The first abutting portion 112 protrudes into the extension portion 133 and is spaced from the inner surface of the extension portion 133 by a certain gap. The rear section of the first conductive terminal 12 and the pair of bent portions 173 of the grounding member 17 are exposed from the rear end surface of the first insulating body 11.

The first sealing ring 16 is sleeved on the flange 113 from front to back, and is tightly clamped between the flange 113 and the first metal shell 13 through an annular convex rib 161. The first rear cover 14 is assembled on the rear sides of the first insulating body 11 and the first metal casing 13, and fastened to the first metal casing 13 by a plurality of screws 18, wherein the screws 18 are inserted from the rear to the front and pass through the coupling holes 1411 of the first rear cover 14, and further inserted forward into rear mounting holes 1342 opened rearward on the first metal casing 13.

The mounting plate 151 of the first protection cover 15 is assembled into the mounting groove 1321 from front to back, and the first protection cover 15 is connected to the first metal housing 13 through a connector. When the socket connector 100 is not required to be plugged into the plug connector 200, the cover plate 152 may be covered on the mounting plate 151, and at this time, the outer edge portion 1522 is inserted into the extension portion 133 and located outside the first mating portion 112, that is, sandwiched between the first mating portion 112 and the inner surface of the extension portion 133, and the blocking bodies 1521 are respectively inserted into the corresponding first receiving spaces 110 to close the front openings thereof.

In addition, the socket connector 100 of the present invention has compact terminal arrangement and overall structure, and can meet the miniaturization requirement.

Referring to fig. 9 to 15, a plug connector 200 according to a preferred embodiment of the present invention is similar to the socket connector 100, wherein the plug connector 200 includes a second insulating body 21, a plurality of second conductive terminals 22 assembled in the second insulating body 21, a second metal shell 23 assembled outside the second insulating body 21, and a second rear cover 24 assembled outside the second insulating body 21.

The second insulating body 21 has a mating post 211 on the front side and a mating portion 212 on the rear side, the mating post 211 has an outer shape and size matching those of the first receiving space 110 of the first insulating body 11, and the mating post 211 has a mating space 210 penetrating through it in the front-rear direction. The engaging portion 212 includes a groove 2121 formed to be recessed forward from the rear end surface thereof, a plurality of receiving holes 2122 formed to penetrate the peripheral wall thereof, and a plurality of fixing arms 2123 provided on the peripheral wall thereof. The rear end of the fixing arm 2123 is a free end, and a fixing portion 2124 that is buckled with the second metal housing 23 is provided at the rear end of the fixing arm 2123, in this embodiment, the number of the fixing arms 2123 is three, wherein two sides in the transverse direction are respectively provided with one fixing arm 2123, and one fixing arm 2123 is provided at the lower side of the mating portion 212.

The second conductive terminal 22 is configured and arranged in the same manner as the first conductive terminal 12, and has a pair of second power terminals 221, two pairs of second signal terminals 222, and a pair of detection terminals 223 so as to be capable of butting against the first conductive terminal 12, wherein the second power terminals 221 have tubular second contact portions 2211 and crown springs 2212 located in the second contact portions 2211. The first contact portion 1211 of the first power terminal 121 elastically contacts the crown spring 2212 to achieve better electrical connection.

The second metal shell 23 is coated on the second insulating body 21, and has a tube body 231 penetrating in the front-rear direction, a protruding portion 232 extending backward from one side of the tube body 231, and a notch 233 formed on the outside of the tube body 231, wherein the notch 233 is disposed on a protruding strip 234 protruding outward from the tube body 231 and is located on the same side of the second metal shell 23 as the protruding portion 232. The front end surface of the second metal shell 23 is located on the front side of the second insulating body 21, and extends rearward such that the rear end surface thereof is located on the rear side of the second insulating body 21, and in this embodiment, the rear end surface of the second metal shell 23 is located on the rear side of the second rear cover 24.

The second rear cover 24 is inserted forward into the second insulating body 21, and has a plurality of circular receiving cavities 241 penetrating in the front-rear direction and a pair of convex hulls 242 disposed on top thereof, and the pair of convex hulls 242 are disposed at intervals in the transverse direction and protrude into the corresponding receiving holes 2122. The second rear cover 24 further has a groove 243 located between the pair of convex hulls 242 and extending in the front-rear direction, the groove 243 is aligned with the groove 2121 of the second insulating body 21 in the front-rear direction, and the protruding portion 232 of the second metal shell 23 protrudes downward into the groove 2121 of the second insulating body 21 and the groove 243 of the second rear cover 24.

The plug connector 200 further comprises a second sealing ring 25 sleeved outside the second conductive terminal 22, an additional housing 26 sleeved outside the second metal shell 23, and an elastic locking piece 27, wherein the second sealing ring 25 is sleeved outside the second conductive terminal 22 and wrapped at the same time. The front end of the additional housing 26 is a ring 261 and a protruding portion 262 connected to one side of the ring 261 and extending backward, the protruding portion 262 is provided with a receiving groove 2621 penetrating the protruding portion 262 along the height direction, and the ring 261 is sleeved on the second metal casing 23.

The latch member 27 has a latch arm 271 extending forward, a resilient pivoting member 272, and a pressing portion 273 for pressing by a user, wherein the latch arm 271 is inserted forward and fixed in a through hole formed through the ring 261 in the front-rear direction and exposed to the front side of the ring 261, and the pressing portion 273 is exposed to a receiving groove 2621 of the protruding portion 262. By pressing the pressing portion 273, the locking arm 271 can be locked or unlocked with the locking hole 1331 of the receptacle connector 100 by the pivot member 272.

The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. An electric connector combination, it has mutual paired electric connector and butt joint connector, the electric connector includes first insulating body, is fixed in a plurality of first conductive terminal in the first insulating body and assemble in first insulating body's first metal casing, first insulating body has a plurality of first terminal passageway with it runs through in order to accept corresponding first conductive terminal along the fore-and-aft direction, its characterized in that: the first metal shell is assembled outside the first insulating body along the front-back direction, the first metal shell extends backwards to enable the rear end face of the first metal shell to be at least flush with the rear end face of the first insulating body, the front end face of the first metal shell is positioned in front of the front end face of the first insulating body, the first insulating body is provided with three first accommodating spaces penetrating along the front-back direction, two first accommodating spaces on the upper side of the first insulating body are symmetrically arranged and have the same size, one first accommodating space on the lower side is centered and symmetrically arranged below the two first accommodating spaces, the center points of the three first accommodating spaces form an isosceles triangle on the abutting surface, the first conductive terminals are symmetrically arranged, the electric connector further comprises a grounding piece positioned at the bottom of the first insulating body, the grounding piece is provided with a plate body part, a fixing part positioned at two sides of the plate body part in the transverse direction, a pair of bending parts positioned at the rear end of the plate body part and a supporting part formed by downwards protruding from the plate body part, the free tail end of the fixing part is buried in the first insulating body, the pair of bending parts are oppositely bent, and the supporting part downwards protrudes and is clamped on the inner surface of the first metal shell.

2. The electrical connector assembly of claim 1, wherein: the first conductive terminal is embedded and formed in the first insulating body and is provided with two pairs of first signal terminals and a pair of first detection terminals, and the first power supply terminal is an elastic terminal.

3. The electrical connector assembly of claim 1, wherein: the first metal shell is provided with a base body wrapped outside the first insulating body, a mounting frame formed by outwards protruding the base body and an annular extension part positioned at the front side of the base body, a mounting groove is formed in the inner side of the mounting frame, and the extension part is positioned in the mounting groove.

4. The electrical connector assembly of claim 3, wherein: the first insulating body is provided with a first main body part positioned at the rear side and a first butt joint part positioned at the front side, and the first butt joint part protrudes into the extension part and forms a certain gap with the inner surface of the extension part at intervals.

5. The electrical connector assembly of claim 4, wherein: the electric connector is further provided with a first protective cover arranged at the front end of the first metal shell, the first protective cover is provided with a mounting plate and a cover plate connected with one side of the mounting plate, the mounting plate of the first protective cover is assembled into the mounting groove from front to back, and the first protective cover is connected with the first metal shell through a connecting piece.

6. The electrical connector assembly of claim 5, wherein: the cover plate is provided with a plurality of blocking bodies and outer edge parts, wherein the blocking bodies are respectively matched with the corresponding first accommodating space in shape and size, the outer edge parts are located on the outer edge parts of the blocking bodies, when the cover plate is covered on the mounting plate, the outer edge parts are clamped between the first butt joint parts and the inner surfaces of the extension parts, and the blocking bodies are respectively inserted into the corresponding first accommodating spaces to close the front end openings of the blocking bodies.

7. The electrical connector assembly of claim 3, wherein: the rear end face of the base body is recessed forward to form at least one opening, and the positioning block arranged at the rear end of the first insulating body is inserted into the corresponding opening arranged at the rear end of the first metal shell forward and is fixedly matched with the corresponding opening so as to fix the first insulating body with the first metal shell.

8. The electrical connector assembly of any one of claims 1 to 7, wherein: the electric connector is connected with the equipment to be charged, the butt joint connector is connected with the output equipment through a cable connected with the tail end of the butt joint connector, and the first metal shell is provided with a buckling hole which is buckled with a buckling arm arranged on the butt joint connector.