CN107394520B - electrical connector combination - Google Patents

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

electrical connector combination

technical field

The invention relates to an electrical connector combination, in particular to a miniaturized electrical connector combination with good shielding effect.

Background technique

Electrical connectors are widely used in charging equipment in the fields of new energy vehicles, industrial equipment, urban rail and railway vehicle electrical appliances, etc., to realize outdoor high-current charging. Appears bulky, and does not have the shielding function.

In view of this, it is necessary to improve the existing electrical connector combination to solve the above problems.

Contents of the invention

The object of the present invention is to provide a miniaturized electrical connector assembly with good shielding effect.

In order to achieve the above-mentioned purpose of the invention, the present invention provides an electrical connector assembly, which includes a paired electrical connector and a butt connector, the electrical connector includes a first insulating body, and is fixed in the first insulating body A plurality of first conductive terminals and a first metal shell assembled on the first insulating body, the first insulating body has a plurality of first terminal passages passing through it in the front and rear direction to accommodate the corresponding first conductive terminals, the first The metal shell is assembled on the outside of the first insulating body along the front-to-back direction, and the first metal shell extends backward so that its rear end surface is at least flush with the rear end face of the first insulating body, and the front end of the first metal shell The surface is located in front of the front end of the first insulating body. The first insulating body has three first receiving spaces penetrating in the front and rear directions, and the two first receiving spaces on the upper side are symmetrically arranged and have the same size. Two circles, one first storage space on the lower side is centered and symmetrically arranged below the two first storage spaces, and on the butt joint surface, the center points of the three first storage spaces form an isosceles triangle, and the The first conductive terminals are arranged symmetrically, and include a pair of first power terminals, a plurality of first signal terminals and first detection terminals, and the first power terminals are located on the upper side of the first signal terminals and the first detection terminals , the first detection terminal is located on both sides of the first signal terminal in the lateral direction, the electrical connector also has a grounding piece located at the bottom of the first insulating body, and the grounding piece has a plate body portion , holding portions located on both sides of the plate body in the lateral direction, a pair of bent portions located at the rear end of the plate body, and a resisting portion protruding downward from the plate body, the free of the holding portion The end is embedded in the first insulating body, the pair of bent portions are bent toward each other, and the resisting portion 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, which has two pairs of the first signal terminal and a pair of the first detection terminal, the first The power terminals are elastic terminals.

As a further improvement of the present invention, the first metal shell has a base body wrapped outside the first insulating body, an installation frame protruding outward from the base body, and an annular extension located on the front side thereof, the installation frame An installation groove is formed on the inner side, and the extension part is located in the installation groove.

As a further improvement of the present invention, the first insulating body has a first main body portion on its rear side and a first abutting portion on its front side, the first abutting portion protrudes into the extension portion, and is in contact with the extension portion. A certain gap is formed at intervals between the inner surfaces of the extension parts.

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

As a further improvement of the present invention, the side of the cover plate that is closed toward the mounting plate is protruded with a number of blocking bodies that match the shape and size of the corresponding first accommodation space, and an outer edge portion located on the periphery of the blocking body , when the cover plate is closed on the mounting plate, the outer edge portion is sandwiched between the first docking portion and the inner surface of the extension portion, and the blocking bodies are respectively inserted into the corresponding first In a containing space to close the front opening.

As a further improvement of the present invention, the rear end of the base body is recessed forward to form at least one opening, and the positioning block provided at the rear end of the first insulating body is inserted forward into the corresponding opening provided at the rear end of the first metal shell and is connected with it. The fixed fit is used to fix the first insulating body and the first metal shell.

As a further improvement of the present invention, the electrical connector is connected to the device to be charged, the docking connector is connected to the output device through a cable connected at its end, and the first metal shell is provided with a The buckle hole of the lock arm phase lock.

The electrical connector combination of the present invention can meet the relevant protection requirements, and at the same time, the product structure is compact, and the metal shell is used to completely cover the insulating body, and has a good shielding function.

Description of drawings

FIG. 1 is a three-dimensional assembled view of an electrical connector assembly according to a preferred embodiment of the present invention.

FIG. 2 is a three-dimensional schematic view of the socket connector and the plug connector in the electrical connector combination shown in FIG. 1 butted.

3 to 4 are perspective assembly views of the socket connector shown in FIG. 1 .

FIG. 5 is a partially exploded view of the receptacle connector shown in FIG. 3 .

FIG. 6 is an exploded perspective view of the receptacle connector shown in FIG. 5 with the protective cover and the first metal shell removed.

FIG. 7 is a partially exploded view of the receptacle connector shown in FIG. 5 with the protective cover removed.

FIG. 8 is a front view of the socket connector shown in FIG. 3 .

FIG. 9 is a perspective assembly view of the plug connector shown in FIG. 1 .

10 to 11 are partial exploded views of the plug connector shown in FIG. 9 .

FIG. 12 is a three-dimensional assembly view of the plug connector shown in FIG. 9 after removing the second metal shell, the additional shell and the locking member.

FIG. 13 is an exploded perspective view of the plug connector shown in FIG. 12 .

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

FIG. 15 is a schematic cross-sectional view of the electrical connector assembly shown in FIG. 2 .

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to FIG. 1 to FIG. 2 which shows the electrical connector combination of the present invention, the electrical connector combination includes a socket connector 100 and a plug connector 200 that are paired with each other, wherein the socket connector 100 is connected to the device to be charged, The plug connector 200 is connected to an output device through a cable connected at its end. In the following description, only the socket connector 100 is used as an electrical connector, and the plug connector 200 is used as a docking connector; in other descriptions, the plug connector 200 can also be used as an electrical Butt connectors are explained. For the convenience of expression, when the receptacle connector 100 or the plug connector 200 is introduced separately below, the butt end is taken as the front end, and the other end opposite to the butt end is the rear end.

Please refer to FIG. 3 to FIG. 8 which show a socket connector 100 according to a preferred embodiment of the present invention. The socket connector 100 includes a first insulating body 11 and several first The conductive terminal 12 and the first metal shell 13 assembled on the first insulating body 11 .

3 to 8, the first insulator body 11 has a first main body 111 on its rear side, a first docking portion 112 on its front side, and passes through it along the front and rear directions to accommodate the corresponding first body part 111. A plurality of first receiving spaces 110 for a conductive terminal 12 . In this embodiment, the number of the first receiving spaces 110 is three, and the two first receiving spaces 110 on the upper side are symmetrically arranged in two circles, and the size is Similarly, a first storage space 110 on the lower side is centrally and symmetrically arranged below the two first storage spaces 110. On the butt joint surface, the center points of the three first storage spaces 110 form an isosceles triangle (as shown in FIG. 8). In addition, the upper first receiving space 110 is provided with a terminal groove (not shown) penetrating along the front-rear direction, and the lower first receiving space 110 is provided with several terminal grooves penetrating along the front-rear direction.

A wall portion 1112 is disposed inside the first main body portion 111 , and the wall portion 1112 extends along a direction perpendicular to its axis and is connected to an inner surface of the first main body portion 111 . In addition, a positioning block 1113 protruding outward is provided on the outer peripheral surface of the first main body portion 111 , and the positioning block 1113 is disposed at a rear end of the first main body portion 111 .

The first docking portion 112 is formed by extending forward from the front end of the wall portion 1112 , and the rear section of the first docking portion 112 is located inside the first main body portion 111 , and its front section protrudes from the first main body portion 111 in front of.

The first insulating body 11 also has a flange 113 located at the front end of the first main body 111 , the shape of the flange 113 is consistent with the basic shape of the first main body 111 , but is smaller than the first main body 111 The size is small, and the first abutting portion 112 extends forward and protrudes from the front side of the flange 113 .

Please refer to FIG. 3 to FIG. 8 , the first conductive terminals 12 are embedded in the first insulating body 11 and arranged symmetrically, including a pair of first power terminals 121 and two pairs of first signal terminals. The terminal 122 and a pair of first detection terminals 123. In other embodiments, the number of the first power supply terminal 121, the first signal terminal 122, and the first detection terminal 123 can be set according to application requirements. The first power terminal 121 is an elastic terminal, and it is located on the upper side of the first signal terminal 122 and the first detection terminal 123, and the first detection terminal 123 is located on the first signal terminal in the lateral direction. 122 on both sides. Each first conductive terminal 12 is also provided with a waterproof ring 124 inside. The first power terminal 121 has a columnar first contact portion 1211 and an insulating portion 1212 located at a front end thereof. The insulating portion 1212 is assembled from front to back and snapped onto the front end of the first contact portion 1211 .

Please refer to FIG. 3 to FIG. 5 and FIG. 7, the first metal shell 13 is also symmetrically arranged, and it is assembled on the outside of the first insulating body 11 from front to back, and has a base 131, which extends outward from the base 131. The protruding mounting frame 132 and the annular extending portion 133 are located at the front side thereof. The rear end of the base body 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 them is located on the upper side of the base body 131, and the other two are arranged symmetrically. on both sides in its transverse direction.

An installation groove 1321 is formed inside the installation frame 132 , the extension portion 133 is located in the installation groove 1321 , and the upper and lower sides of the installation frame 132 are respectively recessed to form a notch 1322 . The extension portion 133 extends forward so that its front end is positioned at the front side of the installation frame 132 , and the extension portion 133 is provided with a buckle hole 1331 for interlocking with the hook provided on the plug connector 200 . , in this embodiment, the buckle hole 1331 is located at the top of the extension portion 133 .

The first metal shell 13 also has mounting holes extending along the front and rear directions, and the mounting holes are distributed at the corners of the first metal shell 13. In this embodiment, the mounting holes include front mounting holes 1341 and the rear mounting hole 1342, the front mounting hole 1341 is aligned with the corresponding rear mounting hole 1342 along the front-rear direction, and the front mounting hole 1341 communicates with the mounting groove 1321, and the rear mounting hole 1342 opens backward set up.

Please refer to FIG. 4 to FIG. 7, the socket connector 100 also has a first back cover 14 assembled and fixed on the installation end of the first metal shell 13, the first back cover 14 has a joint part 141, from the The insertion portion 142 protruding forward from the coupling portion 141 and the rear protrusion 143 protruding backward from the coupling portion 141 are provided on the periphery of the coupling portion 141 to align with the corresponding mounting holes. The combination hole 1411. A plurality of receiving channels 144 are formed through the first rear cover 14 along the front-rear direction, and the receiving channels 144 are respectively aligned with the corresponding terminal slots in the first receiving space 110 along the front-rear direction. The middle part of the joint portion 141 is recessed from the front end thereof, and forms a peripheral wall located on the outer edge, and several reinforcing ribs 145 are provided between the peripheral wall and the insertion portion 142 .

The receptacle connector 100 also has a first protective cover 15 disposed on the front end of the first metal shell 13, a first sealing ring 16 sleeved outside the first insulating body 11, and an insert molded on the first insulating body 11. A grounding piece 17 at the bottom of the insulating body 11 .

Wherein, the first protective cover 15 has a mounting plate 151 and a cover plate 152 connected to one side of the mounting plate 151, the periphery of the mounting plate 151 is provided with a plurality of connection holes 1512 passing through it along the front and rear direction, The connecting holes 1512 are respectively aligned with the corresponding front mounting holes 1341 along the front and rear direction, so that the connectors (not shown) can be inserted into the connecting holes 1512 and the front mounting holes 1341 sequentially from front to back, and then the first protective The cover 15 is integrally connected with the first metal shell 13 . The cover plate 152 is openably and closably connected to one side of the mounting plate 151, and the cover plate 152 is provided with a plurality of shapes corresponding to the first receiving space 110 and the The blocking body 1521 with matching size and the outer edge portion 1522 located on the periphery of the blocking body 1521 .

The first sealing ring 16 is annular, and has at least one annular rib 161 protruding from its inner wall toward its central axis.

Please refer to FIG. 4, FIG. 6 and FIG. 7, the ground member 17 has a plate body portion 171, holding portions 172 located on both sides of the plate body portion 171 in the lateral direction, and a rear end of the plate body portion 171. A pair of bent parts 173 and a resisting part 174 protruding downward from the plate body part 171, the free end of the holding part 172 is buried in the first insulating body 11, the pair of bent parts 173 Bending toward each other, the resisting portion 174 protrudes downwards and is locked on the inner surface of the first metal shell 13 .

During assembly, the first conductive terminal 12 and the grounding member 17 are embedded and molded in the first insulating body 11, and the first metal shell 13 is sleeved on the outside of the first insulating body 11 from front to back. Wherein the rear end face of the first metal shell 13 is flush with the rear end face of the first insulating body 11, and the front end face of the first metal shell 13 is located in front of the front end face of the first insulating body 11, so that Noise interference during use is effectively eliminated, and the shielding effect of the socket connector 100 is enhanced.

The positioning block 1113 provided at the rear end of the first insulating body 11 is inserted forward into the corresponding opening 1311 provided at the rear end of the first metal shell 13 and fixedly fitted 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 forms a gap with an inner surface of the extension portion 133 . The rear portion of the first conductive terminal 12 and the pair of bent portions 173 of the grounding member 17 protrude from the rear surface of the first insulating body 11 .

The first sealing ring 16 is sheathed on the flange 113 from front to rear, and is tightly sandwiched between the flange 113 and the first metal shell 13 through its annular rib 161 . The first rear cover 14 is assembled on the rear side of the first insulating body 11 and the first metal casing 13, and is fastened to the first metal casing 13 by a plurality of screws 18, wherein the screws 18 are from It is inserted backward and forward through the combination hole 1411 of the first rear cover 14 , and then inserted forward into the rear mounting hole 1342 opened backward on the first metal shell 13 .

The installation plate 151 of the first protective cover 15 is assembled into the installation groove 1321 from front to rear, and the first protective cover 15 is connected with the first metal shell 13 through a connecting piece. When the receptacle connector 100 does not need to be plugged with the plug connector 200, the cover plate 152 can be covered on the installation plate 151, and the outer edge portion 1522 is inserted into the extension portion 133 and Located outside the first docking portion 112, that is, sandwiched between the first docking portion 112 and the inner surface of the extension portion 133, the blocking bodies 1521 are respectively inserted into the corresponding first receiving spaces 110 to Close its front opening.

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

Please refer to FIG. 9 to FIG. 15, which is a plug connector 200 of a preferred embodiment of the present invention, similar to the socket connector 100, the plug connector 200 shown includes a second insulating body 21, assembled into the first A plurality of second conductive terminals 22 inside 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 docking post 211 on its front side and a mating portion 212 on its rear side. The shape and size of the docking post 211 match the first receiving space 110 of the first insulating body 11 , The docking column 211 has a docking space 210 passing through it along the front-back direction. The engaging portion 212 has a slot 2121 recessed forward from its rear end, a plurality of receiving holes 2122 penetrating its surrounding wall, and a plurality of fixing arms 2123 disposed on its surrounding wall. The rear end of the fixed arm 2123 is a free end, and a fixed portion 2124 that is engaged with the second metal shell 23 is provided at the rear end. In this embodiment, the number of the fixed arms 2123 is three, Wherein, one fixed arm 2123 is provided on both sides in the transverse direction, and one fixed arm 2123 is provided on the lower side of the matching portion 212 .

The composition and arrangement of the second conductive terminal 22 are the same as the first conductive terminal 12, and it has a pair of second power supply terminals 221, two pairs of second signal terminals 222 and a pair of detection terminals 223, so that it can be connected with the first The conductive terminals 12 are butted with each other, and the second power terminal 221 has a tubular second contact portion 2211 and a crown spring 2212 inside the second contact portion 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 covers the second insulating body 21, and has a tube body 231 penetrating in the front-rear direction, a protrusion 232 extending backward from one side of the tube body 231, and an opening. The notch 233 outside the tube body part 231, the notch 233 is set on the protruding strip 234 formed by the tube body part 231 protruding outward, and is located on the second metal shell 23 with the protruding part 232 same side. The front end surface of the second metal shell 23 is located at the front side of the second insulating body 21, and it extends backward so that its rear end surface is located at the rear side of the second insulating body 21. In this embodiment, the The rear end surface of the second metal shell 23 is located at 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 and rear directions and a pair of convex shells 242 arranged on the top thereof. The protrusions 242 are arranged at intervals along the transverse direction and protrude into the corresponding receiving holes 2122 . The second rear cover 24 also has a groove 243 located between the pair of protrusions 242 and extending along the front-rear direction, the groove 243 is aligned with the slot 2121 of the second insulating body 21 along the front-rear direction, and The protruding portion 232 of the second metal shell 23 protrudes downward into the slot 2121 of the second insulating body 21 and the slot 243 of the second rear cover 24 .

The plug connector 200 also has a second sealing ring 25 sleeved outside the second conductive terminal 22, an additional shell 26 sleeved outside the second metal shell 23, and an elastic locking member 27. The first The two sealing rings 25 are sheathed and wrapped around the second conductive terminal 22 at the same time. The front end of the additional housing 26 is an annular ring body 261 and a protruding part 262 connected to one side of the ring body 261 and extending backward. The receiving groove 2621 , the ring body 261 is sleeved on the second metal shell 23 .

The locking member 27 has a locking arm 271 extending forward, an elastic pivoting member 272 and a pressing portion 273 for the user to press and operate. The locking arm 271 is inserted forward and fixed on the ring body 261 along the The pressing portion 273 is exposed in the receiving groove 2621 of the protruding portion 262 through the through hole provided in the front-rear direction and protrudes from the front side of the ring body 261 . 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 under the action of the pivoting member 272 .

The above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solution of the present invention.

Claims (8)

1. An electrical connector assembly, which has a paired electrical connector and a butt connector, the electrical connector includes a first insulating body, a number of first conductive terminals fixed in the first insulating body and an assembly In the first metal shell of the first insulating body, the first insulating body has a plurality of first terminal passages passing through it along the front and rear directions to accommodate the corresponding first conductive terminals, and the feature is that: the first metal shell is along the front and rear The direction is assembled on the outside of the first insulating body, and the first metal casing extends backward so that its rear end surface is at least flush with the rear end surface of the first insulating body, and the front end surface of the first metal casing is located on the In front of the front end of the first insulating body, the first insulating body has three first receiving spaces penetrating in the front-to-back direction, and the two first receiving spaces on the upper side are two circular shapes with the same size and symmetrical arrangement. , a first receiving space on the lower side is centrally and symmetrically arranged below the two first receiving spaces, and on the butt joint surface, the central points of the three first receiving spaces form an isosceles triangle, and the first conductive terminal It is arranged symmetrically and includes a pair of first power supply terminals, a number of first signal terminals and a first detection terminal, the first power supply terminal is located on the upper side of the first signal terminal and the first detection terminal, and the first A detection terminal is located on both sides of the first signal terminal in the lateral direction, and the electrical connector also has a grounding piece located at the bottom of the first insulating body, and the grounding piece has a plate body and is located at the bottom of the first insulating body. The holding parts on both sides of the plate body in the transverse direction, a pair of bending parts located at the rear end of the plate body, and a resisting part protruding downward from the plate body, the free ends of the holding parts are embedded in the In the first insulating body, the pair of bent portions are bent toward each other, and the resisting portion protrudes downwards and is clamped on the inner surface of the first metal shell. 2. The electrical connector assembly according to claim 1, wherein the first conductive terminal is embedded in the first insulating body, and has two pairs of the first signal terminals and a pair of the first signal terminals. The first detection terminal, the first power supply terminal is an elastic terminal. 3. The electrical connector assembly according to claim 1, wherein the first metal shell has a base body wrapped outside the first insulating body, an installation frame formed by protruding outward from the base body, and a For the annular extension part on the front side, an installation groove is formed inside the installation frame, and the extension part is located in the installation groove. 4. The electrical connector assembly according to claim 3, wherein the first insulating body has a first main body portion located at its rear side and a first docking portion located at its front side, and the first docking portion The part protrudes into the extension part, and forms a gap with the inner surface of the extension part. 5. The electrical connector assembly according to claim 4, wherein the electrical connector further has a first protective cover arranged at the front end of the first metal shell, and the first protective cover has a mounting plate and a A cover plate connected to one side of the installation plate, the installation plate of the first protective cover is assembled into the installation groove from front to rear, and the first protective cover and the first metal cover are connected through a connecting piece shell connected. 6. The electrical connector assembly according to claim 5, characterized in that: the side of the cover plate facing the cover of the mounting plate is protruded with a plurality of blocking bodies respectively matching the shape and size of the corresponding first receiving space and an outer edge portion located on the periphery of the blocking body, when the cover plate is closed on the mounting plate, the outer edge portion is sandwiched between the first docking portion and the inner surface of the extension portion During the interval, the blocking bodies are respectively inserted into the corresponding first receiving spaces to close their front openings. 7. The electrical connector assembly according to claim 3, characterized in that: the rear end of the base body is recessed forward to form at least one opening, and the positioning block provided at the rear end of the first insulating body is inserted forward into the first The rear end of the metal shell is provided in a corresponding opening and fixedly fitted therewith, so as to fix the first insulating body and the first metal shell. 8. The electrical connector combination according to any one of claims 1 to 7, characterized in that: the electrical connector is connected to the device to be charged, and the docking connector is connected to the output device through a cable connected at its end In connection with each other, the first metal shell is provided with a buckle hole that is locked with the lock arm provided on the docking connector.

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