CN209860272U

CN209860272U - Electric connector combination

Info

Publication number: CN209860272U
Application number: CN201920490690.1U
Authority: CN
Inventors: 代华银; 焦志贺
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2019-04-11
Filing date: 2019-04-11
Publication date: 2019-12-27
Anticipated expiration: 2029-04-11

Abstract

The utility model discloses an electric connector assembly, which comprises a butt connector and an electric connector, wherein the butt connector comprises a shielding shell, the electric connector comprises a metal shell coated on the periphery of an insulating shell and a conductive terminal, a first fixing groove is concavely arranged outwards from the inner wall surface of the metal shell, a second fixing groove is concavely arranged inwards from the outer wall surface of the metal shell, the projection of the second fixing groove along the radial direction of the metal shell is at least partially overlapped with the projection of the first fixing groove along the radial direction, an inner shielding ring is fixed in the first fixing groove, an outer shielding ring is fixed in the second fixing groove, a plurality of elastic arms are integrally extended outwards to protrude out of the second fixing groove, the outer shielding ring at least partially surrounds the periphery of the inner shielding ring, the inner shielding ring comprises a base part and at least one elastic piece formed by inward extension of the base part, the elastic piece is abutted against the shielding shell, and the base part is abutted against the metal shell, the mounting panel has a grounding portion, the elastic arm is elastically abutted against the grounding portion, and the outer shielding ring is mechanically abutted against the metal housing.

Description

Electric connector combination

[ technical field ] A method for producing a semiconductor device

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

[ background of the invention ]

The prior electric connector combination for transmitting high voltage and heavy current comprises a plug and a socket which are mutually inserted, wherein the plug is provided with a plug metal shell, the socket is provided with a socket metal shell, the front end of the socket metal shell is provided with a plurality of connecting holes, namely, one end used for being inserted into the plug is provided with a grounding piece which is used for being electrically connected with the metal shell of the plug when the plug is inserted into the socket, thereby electrically connecting the plug metal shell with the socket metal shell, but electrically connecting the socket metal shell with the plug metal shell only through the grounding piece, forming a grounding loop only through the contact between the socket metal shell and the chassis outer shell, because the metal shell of the socket and the casing of the case are both made of hard metal, the phenomenon of poor contact is easy to occur, the stability of the whole grounding loop is poor, therefore, the shielding effect of the electric connector combination is poor, and the electric connector combination which transmits high voltage and large current cannot be well shielded.

Therefore, there is a need to design a new electrical connector assembly to overcome the above problems.

[ Utility model ] content

An object of the present invention is to provide an electric connector assembly having an inner shield ring and an outer shield ring, wherein the outer shield ring at least partially surrounds the inner shield ring to improve the shielding effect.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an electrical connector assembly comprising: the butt connector comprises at least one butt terminal, a shielding shell surrounding the butt terminal and at least one cable connected to the butt terminal; an electric connector, the electric connector includes at least a conductive terminal, an insulating shell covering the conductive terminal, a metal shell covering the insulating shell and the conductive terminal, a first fixing groove concavely formed from the inner wall surface of the metal shell, a second fixing groove concavely formed from the outer wall surface of the metal shell, the projection of the second fixing groove along the radial direction of the metal shell is at least partially overlapped with the projection of the first fixing groove along the radial direction of the metal shell, an inner shielding ring fixed in the first fixing groove, an outer shielding ring fixed in the second fixing groove, the outer shielding ring integrally and outwardly extended with a plurality of elastic arms protruding out of the second fixing groove, the outer shielding ring at least partially surrounding the periphery of the inner shielding ring, the inner shielding ring including a base portion and at least one elastic sheet formed by the base portion extending inwardly, an inserting space is formed between the inner wall surface of the metal shell and the outer wall surface of the insulating shell, the elastic sheet extends into the inserting space, when the electric connector is butted with the butting connector along the front-back direction, the shielding shell is inserted into the inserting space, the elastic sheet is abutted against the shielding shell, and meanwhile, the base is abutted against the metal shell; the electric connector is fixed on the installation panel, the installation panel comprises a grounding part, the grounding part is conducted with a grounding path of the installation panel, the elastic arm is elastically abutted against the grounding part, and meanwhile, the outer shielding ring is mechanically abutted against the metal shell.

Furthermore, the outer shielding ring is provided with an annular substrate, a plurality of puncture holes are formed in the substrate at intervals and surround the periphery of the metal shell, each puncture hole is bent forwards and outwards from the rear end edge of each puncture hole to correspondingly form each elastic arm, and each elastic arm is located in front of the elastic piece.

Furthermore, the basal portion is C-shaped, a plurality of through holes are formed in the basal portion, and a plurality of elastic pieces are bent backwards and inwards from the front end edge of each through hole and extend to surround the periphery of the inner wall of the metal shell.

Further, the base plate at least partially surrounds the periphery of the base portion, and the rear end edge of the base plate is located behind the front end edge of the base portion.

Further, a front end edge of the base plate is located forward of a front end edge of the base portion, and a rear end edge of the base plate is located forward of a rear end edge of the base portion.

Furthermore, two tail ends of the base part are provided with first gaps, the base plate is also in a C shape, a second gap is arranged between the two tail ends of the base plate, and the second gap and the first gap are arranged in a staggered mode along the axial direction.

Furthermore, the two tail ends of the substrate are fixed on the metal shell through laser welding.

Furthermore, the mounting panel is provided with a mounting hole, the metal shell and the outer shielding ring are inserted into the mounting hole together, the inner wall surface of the mounting hole forms the grounding part, the elastic arm is abutted against the inner wall surface of the mounting hole and is electrically conducted with the grounding part, and the substrate is abutted against the outer wall surface of the metal shell and is electrically conducted.

Further, the substrate is abutted with the outer wall surface of the metal shell to form a first contact surface, the base is abutted with the inner wall surface of the metal shell to form a second contact surface, and the projections of the first contact surface and the second contact surface in the radial direction of the metal shell are at least partially overlapped.

Furthermore, the elastic arm is abutted against the inner wall surface of the mounting hole to form a third contact surface, when the butting connector is butted with the electric connector, the elastic piece is abutted against the shielding shell to form a fourth contact surface, and the third contact surface and the fourth contact surface are respectively positioned on the front side and the rear side of the second contact surface which is arranged face to face with the first contact surface.

Furthermore, the metal shell is convexly provided with a positioning plate and a buckling part positioned in front of the positioning plate, the outer shielding ring is positioned behind the positioning plate, the positioning plate is provided with at least one through groove, the electric connector further comprises a fixing piece, the fixing piece penetrates through the through groove to fix the positioning plate on the installation panel, the rear end surface of the fixing piece is abutted against the front end surface of the installation panel backwards to be electrically conducted with each other, the shielding shell is provided with a pressing arm, the pressing arm is provided with a first locking part and a second locking part positioned behind the first locking part, when the electric connector is butted with the butting connector, the first locking part and the buckling part are locked by operating the pressing arm, when the electric connector is unlocked with the butting connector, the pressing arm is operated, and enabling the first locking part to be sequentially released from the first locking part and the second locking part until the electric connector is completely separated from the butting connector.

Compared with the prior art, the electric connector of the present invention comprises the butt-joint connector and the electric connector, the butt-joint connector comprises the shielding shell, the butt-joint connector is inserted backwards into the electric connector, the electric connector comprises the metal shell, the inner shielding ring between the insulating shell and the metal shell, the outer shielding ring surrounding the metal shell, the outer shielding ring integrally extends to form an elastic arm, the electric connector is fixed on the installation panel, the installation panel comprises the grounding part, the grounding part is conducted with the grounding path, the elastic arm is elastically abutted against the grounding part so as to be stably contacted, meanwhile, the outer shielding ring is also abutted against the metal shell, the inner shielding ring comprises the base part and at least one elastic piece formed by the base part extending inwards, the splicing space is formed between the inner wall surface of the metal shell and the outer wall surface of the insulating shell, the elastic sheet extends into the splicing space, when the electric connector is butted with the butting connector along the front-back direction, the shielding shell is inserted into the plugging space, the elastic sheet is abutted with the shielding shell, meanwhile, the base part is abutted against the metal shell, the outer shielding ring is at least partially arranged around the periphery of the inner shielding ring in a surrounding manner, so that the inner shielding ring is close to the outer shielding ring, so that the distances between the outer shielding ring and the grounding part and between the inner shielding ring and the metal shell and between the inner shielding ring and the shielding shell are smaller, so that the contact resistance between the outer shielding ring and the grounding part and the metal shell is smaller, therefore, the shielding effect of the electric connector combination is improved, and the electric connector combination for transmitting high-voltage large current can be well shielded.

[ description of the drawings ]

Fig. 1 is a perspective assembly view of the electric connector assembly of the present invention when it is not inserted into the mating connector;

fig. 2 is a perspective combination view of the electric connector combination of the present invention after being inserted;

fig. 3 is a partial exploded perspective view of the electrical connector assembly of the present invention;

fig. 4 is a cross-sectional view of the electrical connector assembly of the present invention when it is inserted into a mating receptacle;

fig. 5 is a cross-sectional view of the electrical connector assembly of the present invention;

FIG. 6 is an enlarged view of A of FIG. 4;

fig. 7 is an exploded perspective view of the electrical connector assembly of the present invention.

Detailed description of the embodiments reference is made to the accompanying drawings in which:

electrical connector 100	Conductive terminal 1	Contact element 11	Insulating member 12
				Insulating housing 2	Main body part 21	Plug-in part 22	Stop part 23
Metal housing 3	Latch portion 31	Inserting part 32	First fixing groove 33
				Front convex part 34	First guide slope 341	Frame 35	Mounting opening 351
Positioning plate 36	Through groove 361	Fixing member 362	Mounting panel 37
				Mounting hole 371	Grounding part 372	Second fixing groove 38	Rear convex part 39
Inner shield ring 4	Base 41	Through hole 42	Spring plate 43
				First slit 44	Outer shield ring 5	Elastic arm 51	Substrate 52
Connecting end 53	Piercing hole 54	First contact surface 55	Second contact surface 56
				Third contact surface 57	Fourth contact surface58	Second slit 59	Plug-in space 9
Signal line 10	Retaining member 20	Waterproof pad 30	Rear cover 40
				Docking connector 200	Butt terminal 6	Butt joint part 61	Spring reed 62
Pin 63	Insulating cap 64	Shielding case 7	Pressing arm 71
				First latch portion 72	Annular projection 73	Second locking portion 74	Metal ring 8
Elastic finger 81	Insulator 60	Cable 70	Detecting sheet 80

[ detailed description ] embodiments

For better understanding of the objects, structures, features, and functions of the present invention, reference should now be made to the drawings and detailed description of the invention.

As shown in fig. 1, fig. 2 and fig. 7, the electrical connector assembly of the present invention includes an electrical connector 100 and a docking connector 200 located in front of the electrical connector 100, the docking connector 200 is inserted into the electrical connector 100 backwards, as shown in fig. 1, fig. 6 and fig. 7, wherein the electrical connector 100 includes an insulating housing 2, at least one conductive terminal 1, a signal line 10, and a clamping member 20 for clamping the signal line 10, which are all received in the insulating housing 2, a metal housing 3 covering the insulating housing 2, an inner shielding ring 4 located between an inner wall surface of the metal housing 3 and an outer wall surface of the insulating housing 2, an outer shielding ring 5 sleeved on an outer periphery of the metal housing 3, a waterproof pad 30 surrounding the metal housing 3, a rear cover 40 inserted into a rear end of the metal housing 3, a cable (not shown) connected to the conductive terminal 1, the metal shell 3 is provided with a buckling part 31. As shown in fig. 1, fig. 2 and fig. 4, the docking connector 200 includes an insulator 60, at least one docking terminal 6 for docking with the conductive terminal 1, and a detecting piece 80, which are accommodated in the insulator 60, a shielding shell 7 sleeved outside the insulator 60, a cable 70 connected to the docking terminal 6, and a metal ring 8 sleeved outside the cable 70. The metal ring 8 integrally extends with an elastic finger 81 to abut against the shielding case 7. The shielding shell 7 is provided with a pressing arm 71, the pressing arm 71 is provided with a first locking portion 72 and a second locking portion 74, and when the docking connector 200 is inserted backwards into the electrical connector 100, the pressing arm 71 is operated to lock or separate the first locking portion 72 and the locking portion 31. The shielding shell 7 is integrally formed with an annular projection 73 projecting outward.

As shown in fig. 1, 3 and 4, in this embodiment, preferably, one conductive terminal 1 of the electrical connector 100 is disposed and accommodated in the insulating housing 2, in other embodiments, the conductive terminals 1 may be multiple, the conductive terminal 1 includes a cylindrical contact member 11 and an insulating member 12 clamped at a front end of the contact member 11, the insulating member 12 prevents a hand from touching the contact member 11, and the contact member 11 is made of a conductive material. The butt-joint terminal 6 comprises a cylindrical butt-joint piece 61, an elastic reed 62 attached to the inner wall of the butt-joint piece 61, a pin 63 fixed in the butt-joint piece 61 and an insulating cap 64 fixedly arranged at the front end of the pin 63, wherein the insulating cap 64 prevents a hand from touching the butt-joint piece 61, and the elastic reed 62 can increase the contact force when the butt-joint terminal 6 is connected with the conductive terminal 1 in an inserting manner.

The signal lines 10 are also provided with two signal lines, the front end of each signal line 10 is clamped in a clamping piece 20 and is electrically conducted, the clamping piece 20 is also accommodated in the insulating shell 2 and is positioned below the conductive terminal 1, the clamping piece 20 is made of metal, and when the electric connector 100 is in butt joint with the butting connector 200, the clamping piece 20 is in butt joint with the detecting piece 80 and is conducted.

As shown in fig. 3, 5 and 7, the insulating housing 2 includes a main body 21 and a cylindrical plug portion 22 extending forward from the main body 21, the plug portion 22 is disposed around the periphery of the conductive terminal 1, the main body 21 is substantially elliptical and cylindrical, and the main body 21 has a blocking portion 23 integrally protruding outward from the main body 21.

As shown in fig. 4, 6 and 7, the metal shell 3 is wrapped around the insulating shell 2, and the top wall of the metal shell 3 is provided with the fastening portion 31. The latching portion 31 is used for cooperating with the first latching portion 72 of the mating connector 200 to firmly fix the electrical connector 100 and the mating connector 200 together. When separating, the fastening portion 31 is separated from the first locking portion 72 and locked with the second locking portion 74, and the fastening portion 31 is separated from the second locking portion 74 again to achieve two times of unlocking. The metal shell 3 includes a frame portion 35 and an insertion portion 32 formed by extending the frame portion 35 forward, and the fastening portion 31 is disposed at an upper end of the insertion portion 32. The frame portion 35 is disposed around the periphery of the rear end of the main body portion 21, the frame portion 35 is also disposed around the periphery of the blocking portion 23, the insertion portion 32 is disposed around the periphery of the insertion portion 22, an insertion space 9 is formed between an inner wall surface of the metal shell 3 and an outer wall surface of the insertion portion 22, and the insertion space 9 is used for the shielding shell 7 of the mating connector 200 to be inserted. The inner wall surface of the inserting part 32 is recessed outwards to form a first fixing groove 33, the outer wall surface of the inserting part 32 is recessed inwards to form a second fixing groove 38, the projection of the second fixing groove 38 along the radial direction of the metal shell 3 is at least partially overlapped with the projection of the first fixing groove 33 along the radial direction of the metal shell 3, a front convex part 34 and a rear convex part 39 which are integrally and inwardly formed in the front and rear of the inserting part 32 are formed, the rear end surface of the front convex part 34 and the front end surface of the rear convex part 39 form the inner wall surface of the first fixing groove 33, the blocking part 23 is forwardly abutted against the rear end surface of the rear convex part 39, and the inner wall surface of the rear convex part 39 is inwardly abutted against the outer wall surface of the inserting part 22. The first fixing groove 33 is used for placing the inner shielding ring 4. The front end surface of the front protrusion 34 is provided with a first guiding inclined surface 341. The inserting portion 32 integrally extends to form a positioning plate 36, the positioning plate 36 is provided with at least one through slot 361, and the through slot 361 is used for inserting a fixing member 362, in this embodiment, the fixing member 362 is a screw. Thereby fixing the metal case 3 to a mounting panel 37. A mounting opening 351 is recessed forward from a rear end of the frame 35, and the rear cover 40 is inserted forward into the mounting opening 351. The mounting panel 37 is provided with a mounting hole 371, the metal shell 3 is inserted into the mounting hole 371, the positioning plate 36 is supported backwards against the front end surface of the mounting panel 37 and electrically conducted, and the fixing member 362 passes through the through groove 361 and is fixed on the mounting panel 37, so that the metal shell 3 is fixed on the mounting panel 37. The outer shield ring 5 is also located in the mounting hole 371. The inner wall surface of the mounting hole 371 forms a grounding portion 372, and the grounding portion 372 is conducted with a grounding path.

As shown in fig. 3, 6 and 7, the inner shielding ring 4 is a C-ring shape, and the inner shielding ring 4 includes a base portion 41 of the C-ring shape, at least one through hole 42 provided on the base portion 41, and at least one elastic piece 43 extending from an inner wall surface of the through hole 42. In this example. The through holes 42 and the elastic pieces 43 are provided in plurality and arranged around the center of the base 41. The through hole 42 is provided between the front and rear ends of the base 41. The base 41 is positioned in the first fixing groove 33 and firmly held by the first fixing groove 33. The elastic sheet 43 extends backwards and downwards into the inserting space 9, the base 41 in the shape of a C ring is enclosed in the first fixing groove 33, the inner shielding ring 4 is also almost oval, and the inner shielding ring 4 is enclosed in the oval metal shell 3. So that the inner shield ring 4 does not easily rotate around the centerline of the inner shield ring 4, the inner shield ring 4 is firmly fixed in its position. When the electrical connector 100 is butted with the butting connector 200, the elastic sheet 43 abuts against the outer wall surface of the shielding shell 7, and meanwhile, the elastic sheet 43 is pressed upwards by the shielding shell 7 to enable the inner shielding ring 4 to elastically deform upwards to abut against the metal shell 3, so that the electrical connection between the metal shell 3 and the shielding shell 7 is realized, of course, the base 41 itself abuts against the inner wall surface of the metal shell 3, when an assembly gap exists, no good abutment may exist, the elastic sheet 43 is pressed outwards by the shielding shell 7 to enable the base 41 to well abut against the metal shell 3, and the inner shielding ring 4 electrically conducts the metal shell 3 and the shielding shell 7, so that a good shielding effect is achieved on the electrical connector 100. When the shielding shell 7 is inserted into the inserting space 9, the front end surface of the front protrusion 34 is located behind the annular protrusion 73, and the front end surface of the front protrusion 34 blocks the annular protrusion 73 forward, so that the shielding shell 7 is prevented from being inserted backward. The base 41 has a first slit 44 at both ends.

The outer shielding ring 5 is sleeved on the periphery of the inserting portion 32 and fixed in the second fixing groove 38, the outer shielding ring 5 at least partially surrounds the periphery of the inner shielding ring 4, the outer shielding ring 5 includes a substrate 52, a plurality of puncturing holes 54 formed in the substrate 52, and a plurality of elastic arms 51 formed by extending the inner wall surfaces of the puncturing holes 54 forward and outward, and the elastic arms 51 are located in front of the elastic pieces 43. The base plate 52 at least partially surrounds the periphery of the base 41. The substrate 52 is located in the second fixing groove 38 and firmly held by the second fixing groove 38, the elastic arm 51 protrudes out of the second fixing groove 38 and abuts against the grounding portion 372, the elastic arm 51 elastically abuts against an inner wall surface plate of the mounting hole 371, that is, the elastic arm 51 abuts against the grounding portion 372 and is grounded, and the substrate 52 abuts against an outer wall surface of the metal housing 3, so that the metal housing 3 is electrically conducted with a grounding path of the mounting panel 37, and a shielding effect is achieved between the metal housing 3 and the mounting panel 37. In this embodiment, it is preferable that the outer shield ring 5 at least partially surrounds the peripheral periphery of the inner shield ring 4, specifically, the base plate 52 at least partially surrounds the peripheral periphery of the base portion 41, the front end edge of the base plate 52 is located in front of the front end edge of the base portion 41, the rear end edge of the base plate 52 is located behind the front end edge of the base portion 41, and the rear end edge of the base plate 52 is located in front of the rear end edge of the base portion 41. The spring 43 extends away from the spring arm 51. The substrate 52 abuts against the outer wall surface of the metal case 3 to form a first contact surface 55, and the elastic arm 51 abuts against the grounding portion 372 to form a third contact surface 57. When the mating connector 200 is mated with the electrical connector 100, the elastic sheet 43 abuts against the shielding shell 7 to form a fourth contact surface 58, meanwhile, the base 41 abuts against an inner wall surface of the metal shell 3 to form a second contact surface 56, and projections of the first contact surface 55 and the second contact surface 56 in the radial direction of the metal shell 3 at least partially coincide, so that distances between the first contact surface 55, the second contact surface 56, the third contact surface 57 and the fourth contact surface 58 are shorter, and a path of a whole shielding path is shorter, so that a contact resistance is smaller, and a shielding effect is better. The third contact surface 57 and the fourth contact surface 58 are located on the front and rear sides of a portion of the second contact surface 56 that is located in a face-to-face relationship with the first contact surface 55. Of course, in other embodiments, the front edge of the base plate 52 is located behind the front edge of the base portion 41, such that the base plate 52 at least partially surrounds the peripheral periphery of the base portion 41.

The outer shielding ring 5 is also in a C-ring shape, the outer shielding ring 5 has two connecting ends 53 disposed oppositely, and the two connecting ends 53 are disconnected. In other embodiments, after the outer shielding ring 5 is sleeved on the metal shell 3, the two connecting ends 53 are welded and fixed together. The waterproof pad 30 is clamped between the mounting panel 37 and the positioning plate 36, so as to prevent water from entering between the electrical connector 100 and the mounting panel 37. The base plate 52 is also C-shaped, a second gap 59 is provided between two ends of the base plate 52, namely two connecting ends 53, and the second gap 59 and the first gap 44 are arranged along the axial direction in a staggered manner.

As shown in fig. 3, 4 and 7, in assembly, the conductive terminal 1 is assembled into the insulating housing 2 from back to front, the inner shielding ring 4 is inserted into the first fixing groove 33 of the metal housing 3 from front to back, the first guiding inclined surface 341 is convenient for guiding the inner shielding ring 4 to be assembled into the metal housing 3, and the outer shielding ring 5 is sleeved on the periphery of the metal housing 3 until the outer shielding ring 5 is fixed in the second fixing groove 38. Then, the insulating housing 2 with the conductive terminal 1 mounted thereon is inserted into the metal shell 3 from the rear to the front until the front end surface of the stopper 23 abuts against the rear end surface of the rear protrusion 39. The conductive terminals 1 are butted with the butting terminals 6 and all transmit current. The retaining members 20 of the cable (not shown) are in butt joint with the detecting piece 80, and both transmit current.

To sum up, the utility model discloses electric connector combination has following beneficial effect:

(1) the electrical connector assembly includes the mating connector 200 and the electrical connector 100, the mating connector 200 includes the shielding shell 7, the mating connector 200 is inserted into the electrical connector 100 backwards, the electrical connector 100 includes the metal housing 3, the inner shielding ring 4 located between the insulating shell 2 and the metal housing 3, the outer shielding ring 5 enclosed outside the metal housing 3, the elastic arm 51 integrally extends from the outer shielding ring 5, the electrical connector 100 is fixed on the mounting panel 37, the mounting panel 37 includes the grounding portion 372, the grounding portion 372 is conducted with a grounding path, the elastic arm 51 elastically abuts against the grounding portion 372, meanwhile, the outer shielding ring 5 also abuts against the metal housing 3, the inner shielding ring 4 includes the base portion 41 and at least one elastic piece 43 formed by the base portion 41 extending inwards, the inserting space 9 is formed between the inner wall surface of the metal shell 3 and the outer wall surface of the insulating shell 2, the elastic sheet 43 extends into the inserting space 9, when the electrical connector 100 is butted with the butting connector 200 along the front-back direction, the shielding shell 7 is inserted into the inserting space 9, the elastic sheet 43 is abutted with the shielding shell 7, meanwhile, the base part 41 is abutted with the metal shell 3, the outer shielding ring 5 is at least partially enclosed at the periphery of the inner shielding ring 4, so that the inner shielding ring 4 is closer to the outer shielding ring 5, the outer shielding ring 5 is respectively abutted with the grounding part 372 and the metal shell 3, the inner shielding ring 4 is respectively abutted with the metal shell 3 and the shielding shell 7, the distance between each two abutted parts is smaller, and the contact resistance between the two abutted parts is smaller, therefore, the shielding effect of the electric connector combination is improved, and the electric connector combination for transmitting high-voltage and high-current can be well shielded.

(2) The elastic arm 51 and the elastic sheet 43 extend forward and backward respectively to form, and the elastic arm 51 is located in front of the elastic sheet 43, when it is ensured that the docking connector 20 is plugged backward, the shielding shell 7 is inserted backward into the plugging space 9 without being jammed with the elastic sheet 43, and when the metal shell 3 is inserted backward into the mounting hole of the mounting panel 37, the outer shielding ring 5 sleeved on the periphery of the metal shell 3 is not jammed with the mounting hole 371, so that the distance between the base plate 52 and the base portion 41 is the shortest, the contact resistance is the smallest, and the distance between the first contact surface 55 and the second contact surface 56 of the base plate 52 and the base portion 41 respectively contacting and abutting with the metal shell 3 is the shortest, so that the inner shielding ring 4, the outer shielding ring 5 and the metal shell 3 are connected together, The shielding case 7 and the grounding portion 372 have a small contact resistance in the entire shielding path, and thus have a good shielding effect.

(3) The outer shielding ring 5 and the metal shell 3 are jointly inserted into the mounting hole 371, the substrate 52 is located between the inner wall surface of the mounting hole 371 and the metal shell 3, the substrate 52 shields the signal interference between the mounting panel 37 and the electrical connector 100, the substrate 52 at least surrounds the periphery of the base 41, and the projections of the first contact surface 55 and the second contact surface 56 in the inner and outer directions are at least partially overlapped, so that the distance between the substrate 52 and the base 41 is small, the path between the first contact surface 55 and the second contact surface 56 is minimum, the contact resistance is small, and the shielding effect is improved.

(4) When the inner shielding ring 4 is assembled into the metal shell 3, an assembly gap may exist between the base 41 and the metal shell 3 and the inner shielding ring is not conducted, in the scheme, the elastic sheet 43 extends into the insertion space, so that the elastic sheet 43 can be elastically abutted to the shielding shell 7, the shielding shell 7 extrudes the elastic sheet 43 outwards, the inner shielding ring 4 elastically deforms outwards, the base 41 is well abutted to the metal shell 3, the inner shielding ring 4 is well contacted with the metal shell 3 and the shielding shell 7, and the inner shielding ring 4 is prevented from being not conducted with the metal shell 3.

(5) The first fixing groove 33 and the second fixing groove 38 respectively fix the inner shielding ring 4 and the outer shielding ring 5, so as to prevent the inner shielding ring 4 and the outer shielding ring 5 from being separated from the metal shell 3, the front end and the rear end of the inner wall surface of the first fixing groove 33 block the inner shielding ring 4 from moving back and forth, and the front end and the rear end of the inner wall surface of the second fixing groove 38 block the outer shielding ring 5 from moving back and forth.

(6) The first gap 44 and the second gap 59 are arranged in a staggered manner, so that the inner shielding ring 4 and the outer shielding ring 5 can completely cover the periphery of the conductive terminal 1 and the butt-joint terminal 6, and the shielding effect is better.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and not for the purpose of limiting the scope of the present invention, therefore, all the equivalent technical changes using the description and drawings of the present invention are included in the scope of the present invention.

Claims

1. An electrical connector assembly, comprising:

the butt connector comprises at least one butt terminal, a shielding shell surrounding the butt terminal and at least one cable connected to the butt terminal;

an electric connector, the electric connector includes at least a conductive terminal, an insulating shell covering the conductive terminal, a metal shell covering the insulating shell and the conductive terminal, a first fixing groove concavely formed from the inner wall surface of the metal shell, a second fixing groove concavely formed from the outer wall surface of the metal shell, the projection of the second fixing groove along the radial direction of the metal shell is at least partially overlapped with the projection of the first fixing groove along the radial direction of the metal shell, an inner shielding ring fixed in the first fixing groove, an outer shielding ring fixed in the second fixing groove, the outer shielding ring integrally and outwardly extended with a plurality of elastic arms protruding out of the second fixing groove, the outer shielding ring at least partially surrounding the periphery of the inner shielding ring, the inner shielding ring including a base portion and at least one elastic sheet formed by the base portion extending inwardly, an inserting space is formed between the inner wall surface of the metal shell and the outer wall surface of the insulating shell, the elastic sheet extends into the inserting space, when the electric connector is butted with the butting connector along the front-back direction, the shielding shell is inserted into the inserting space, the elastic sheet is abutted against the shielding shell, and meanwhile, the base is abutted against the metal shell;

the electric connector is fixed on the installation panel, the installation panel comprises a grounding part, the grounding part is conducted with a grounding path of the installation panel, the elastic arm is elastically abutted against the grounding part, and meanwhile, the outer shielding ring is mechanically abutted against the metal shell.

2. The electrical connector assembly of claim 1, wherein: the outer shielding ring is provided with an annular base plate, a plurality of puncture holes are formed in the base plate at intervals and surround the periphery of the metal shell, each elastic arm is formed by bending and extending forwards and outwards from the rear end edge of each puncture hole, and each elastic arm is located in front of the corresponding elastic piece.

3. The electrical connector assembly of claim 2, wherein: the base is C-shaped, a plurality of through holes are formed in the base, and a plurality of elastic pieces are bent backwards and inwards from the front end edge of each through hole and extend around the inner wall of the metal shell.

4. The electrical connector assembly of claim 3, wherein: the base plate at least partially surrounds the periphery of the base portion, and the rear end edge of the base plate is located behind the front end edge of the base portion.

5. The electrical connector assembly of claim 4, wherein: the front end edge of the base plate is located in front of the front end edge of the base portion, and the rear end edge of the base plate is located in front of the rear end edge of the base portion.

6. The electrical connector assembly of claim 3, wherein: the base plate is also C-shaped, a second gap is formed between the two tail ends of the base plate, and the second gap and the first gap are arranged in a staggered mode along the axial direction.

7. The electrical connector assembly of claim 6, wherein: and the two tail ends of the substrate are fixed on the metal shell through laser welding.

8. The electrical connector assembly of claim 2, wherein: the mounting panel is provided with a mounting hole, the metal shell and the outer shielding ring are inserted into the mounting hole together, the inner wall surface of the mounting hole forms the grounding part, the elastic arm is abutted against the inner wall surface of the mounting hole and is electrically conducted with the grounding part, and the substrate is abutted against the outer wall surface of the metal shell and is electrically conducted.

9. The electrical connector assembly of claim 8, wherein: the base plate is abutted with the outer wall surface of the metal shell to form a first contact surface, the base part is abutted with the inner wall surface of the metal shell to form a second contact surface, and the projections of the first contact surface and the second contact surface in the radial direction of the metal shell are at least partially overlapped.

10. The electrical connector assembly of claim 9, wherein: the elastic arm is abutted with the inner wall surface of the mounting hole to form a third contact surface, when the butting connector is butted with the electric connector, the elastic piece is abutted with the shielding shell to form a fourth contact surface, and the third contact surface and the fourth contact surface are respectively positioned on the front side and the rear side of the second contact surface of the part which is arranged face to face with the first contact surface.

11. The electrical connector assembly of claim 1, wherein: the metal shell is convexly provided with a positioning plate and a buckling part positioned in front of the positioning plate, the outer shielding ring is positioned behind the positioning plate, the positioning plate is provided with at least one through groove, the electric connector further comprises a fixing piece, the fixing piece penetrates through the through groove to fix the positioning plate on the installation panel, the rear end surface of the fixing piece is abutted against the front end surface of the installation panel backwards to be electrically conducted with each other, the shielding shell is provided with a pressing arm, the pressing arm is provided with a first buckling part and a second buckling part positioned behind the first buckling part, when the electric connector is butted with the butting connector, the first buckling part and the buckling part are buckled by operating the pressing arm, when the electric connector is unlocked with the butting connector, the first buckling part is sequentially buckled with the first buckling part and the second buckling part by operating the pressing arm, until the electrical connector is completely separated from the mating connector.